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-rw-r--r--drivers/gpio/Kconfig32
-rw-r--r--drivers/gpio/Makefile3
-rw-r--r--drivers/gpio/gpio-104-dio-48e.c2
-rw-r--r--drivers/gpio/gpio-104-idi-48.c2
-rw-r--r--drivers/gpio/gpio-104-idio-16.c2
-rw-r--r--drivers/gpio/gpio-adnp.c31
-rw-r--r--drivers/gpio/gpio-altera.c4
-rw-r--r--drivers/gpio/gpio-aspeed.c9
-rw-r--r--drivers/gpio/gpio-ath79.c3
-rw-r--r--drivers/gpio/gpio-brcmstb.c422
-rw-r--r--drivers/gpio/gpio-crystalcove.c2
-rw-r--r--drivers/gpio/gpio-dln2.c2
-rw-r--r--drivers/gpio/gpio-dwapb.c36
-rw-r--r--drivers/gpio/gpio-ftgpio010.c2
-rw-r--r--drivers/gpio/gpio-grgpio.c6
-rw-r--r--drivers/gpio/gpio-ingenic.c2
-rw-r--r--drivers/gpio/gpio-intel-mid.c2
-rw-r--r--drivers/gpio/gpio-loongson1.c7
-rw-r--r--drivers/gpio/gpio-lynxpoint.c2
-rw-r--r--drivers/gpio/gpio-max3191x.c492
-rw-r--r--drivers/gpio/gpio-max732x.c2
-rw-r--r--drivers/gpio/gpio-mb86s7x.c12
-rw-r--r--drivers/gpio/gpio-merrifield.c2
-rw-r--r--drivers/gpio/gpio-mmio.c130
-rw-r--r--drivers/gpio/gpio-mpc8xxx.c23
-rw-r--r--drivers/gpio/gpio-omap.c2
-rw-r--r--drivers/gpio/gpio-pca953x.c2
-rw-r--r--drivers/gpio/gpio-pcf857x.c2
-rw-r--r--drivers/gpio/gpio-pci-idio-16.c2
-rw-r--r--drivers/gpio/gpio-pl061.c2
-rw-r--r--drivers/gpio/gpio-rcar.c24
-rw-r--r--drivers/gpio/gpio-reg.c4
-rw-r--r--drivers/gpio/gpio-stmpe.c10
-rw-r--r--drivers/gpio/gpio-tb10x.c3
-rw-r--r--drivers/gpio/gpio-tc3589x.c2
-rw-r--r--drivers/gpio/gpio-tegra186.c620
-rw-r--r--drivers/gpio/gpio-thunderx.c13
-rw-r--r--drivers/gpio/gpio-uniphier.c508
-rw-r--r--drivers/gpio/gpio-vf610.c2
-rw-r--r--drivers/gpio/gpio-wcove.c2
-rw-r--r--drivers/gpio/gpio-ws16c48.c2
-rw-r--r--drivers/gpio/gpio-xgene-sb.c15
-rw-r--r--drivers/gpio/gpio-xlp.c2
-rw-r--r--drivers/gpio/gpio-zx.c2
-rw-r--r--drivers/gpio/gpio-zynq.c2
-rw-r--r--drivers/gpio/gpiolib-of.c4
-rw-r--r--drivers/gpio/gpiolib.c582
-rw-r--r--drivers/gpio/gpiolib.h6
48 files changed, 2638 insertions, 407 deletions
diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index 3f80f167ed56..29fc15423299 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -139,7 +139,7 @@ config GPIO_BRCMSTB
default y if (ARCH_BRCMSTB || BMIPS_GENERIC)
depends on OF_GPIO && (ARCH_BRCMSTB || BMIPS_GENERIC || COMPILE_TEST)
select GPIO_GENERIC
- select GPIOLIB_IRQCHIP
+ select IRQ_DOMAIN
help
Say yes here to enable GPIO support for Broadcom STB (BCM7XXX) SoCs.
@@ -286,8 +286,7 @@ config GPIO_LYNXPOINT
Requires ACPI device enumeration code to set up a platform device.
config GPIO_MB86S7X
- bool "GPIO support for Fujitsu MB86S7x Platforms"
- depends on ARCH_MB86S7X || COMPILE_TEST
+ tristate "GPIO support for Fujitsu MB86S7x Platforms"
help
Say yes here to support the GPIO controller in Fujitsu MB86S70 SoCs.
@@ -442,6 +441,15 @@ config GPIO_TEGRA
help
Say yes here to support GPIO pins on NVIDIA Tegra SoCs.
+config GPIO_TEGRA186
+ tristate "NVIDIA Tegra186 GPIO support"
+ default ARCH_TEGRA_186_SOC
+ depends on ARCH_TEGRA_186_SOC || COMPILE_TEST
+ depends on OF_GPIO
+ select GPIOLIB_IRQCHIP
+ help
+ Say yes here to support GPIO pins on NVIDIA Tegra186 SoCs.
+
config GPIO_TS4800
tristate "TS-4800 DIO blocks and compatibles"
depends on OF_GPIO
@@ -475,6 +483,14 @@ config GPIO_TZ1090_PDC
help
Say yes here to support Toumaz Xenif TZ1090 PDC GPIOs.
+config GPIO_UNIPHIER
+ tristate "UniPhier GPIO support"
+ depends on ARCH_UNIPHIER || COMPILE_TEST
+ depends on OF_GPIO
+ select IRQ_DOMAIN_HIERARCHY
+ help
+ Say yes here to support UniPhier GPIOs.
+
config GPIO_VF610
def_bool y
depends on ARCH_MXC && SOC_VF610
@@ -1256,6 +1272,16 @@ config GPIO_74X164
shift registers. This driver can be used to provide access
to more gpio outputs.
+config GPIO_MAX3191X
+ tristate "Maxim MAX3191x industrial serializer"
+ select CRC8
+ help
+ GPIO driver for Maxim MAX31910, MAX31911, MAX31912, MAX31913,
+ MAX31953 and MAX31963 industrial serializer, a daisy-chainable
+ chip to make 8 digital 24V inputs available via SPI. Supports
+ CRC checksums to guard against electromagnetic interference,
+ as well as undervoltage and overtemperature detection.
+
config GPIO_MAX7301
tristate "Maxim MAX7301 GPIO expander"
select GPIO_MAX730X
diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile
index 8a2dfba3b231..4bc24febb889 100644
--- a/drivers/gpio/Makefile
+++ b/drivers/gpio/Makefile
@@ -70,6 +70,7 @@ obj-$(CONFIG_ARCH_LPC32XX) += gpio-lpc32xx.o
obj-$(CONFIG_GPIO_LP873X) += gpio-lp873x.o
obj-$(CONFIG_GPIO_LP87565) += gpio-lp87565.o
obj-$(CONFIG_GPIO_LYNXPOINT) += gpio-lynxpoint.o
+obj-$(CONFIG_GPIO_MAX3191X) += gpio-max3191x.o
obj-$(CONFIG_GPIO_MAX730X) += gpio-max730x.o
obj-$(CONFIG_GPIO_MAX7300) += gpio-max7300.o
obj-$(CONFIG_GPIO_MAX7301) += gpio-max7301.o
@@ -114,6 +115,7 @@ obj-$(CONFIG_GPIO_SYSCON) += gpio-syscon.o
obj-$(CONFIG_GPIO_TB10X) += gpio-tb10x.o
obj-$(CONFIG_GPIO_TC3589X) += gpio-tc3589x.o
obj-$(CONFIG_GPIO_TEGRA) += gpio-tegra.o
+obj-$(CONFIG_GPIO_TEGRA186) += gpio-tegra186.o
obj-$(CONFIG_GPIO_THUNDERX) += gpio-thunderx.o
obj-$(CONFIG_GPIO_TIMBERDALE) += gpio-timberdale.o
obj-$(CONFIG_GPIO_PALMAS) += gpio-palmas.o
@@ -132,6 +134,7 @@ obj-$(CONFIG_GPIO_TWL6040) += gpio-twl6040.o
obj-$(CONFIG_GPIO_TZ1090) += gpio-tz1090.o
obj-$(CONFIG_GPIO_TZ1090_PDC) += gpio-tz1090-pdc.o
obj-$(CONFIG_GPIO_UCB1400) += gpio-ucb1400.o
+obj-$(CONFIG_GPIO_UNIPHIER) += gpio-uniphier.o
obj-$(CONFIG_GPIO_VF610) += gpio-vf610.o
obj-$(CONFIG_GPIO_VIPERBOARD) += gpio-viperboard.o
obj-$(CONFIG_GPIO_VR41XX) += gpio-vr41xx.o
diff --git a/drivers/gpio/gpio-104-dio-48e.c b/drivers/gpio/gpio-104-dio-48e.c
index 598e209efa2d..bab3b94c5cbc 100644
--- a/drivers/gpio/gpio-104-dio-48e.c
+++ b/drivers/gpio/gpio-104-dio-48e.c
@@ -326,7 +326,7 @@ static irqreturn_t dio48e_irq_handler(int irq, void *dev_id)
unsigned long gpio;
for_each_set_bit(gpio, &irq_mask, 2)
- generic_handle_irq(irq_find_mapping(chip->irqdomain,
+ generic_handle_irq(irq_find_mapping(chip->irq.domain,
19 + gpio*24));
raw_spin_lock(&dio48egpio->lock);
diff --git a/drivers/gpio/gpio-104-idi-48.c b/drivers/gpio/gpio-104-idi-48.c
index 51f046e29ff7..add859d59766 100644
--- a/drivers/gpio/gpio-104-idi-48.c
+++ b/drivers/gpio/gpio-104-idi-48.c
@@ -209,7 +209,7 @@ static irqreturn_t idi_48_irq_handler(int irq, void *dev_id)
for_each_set_bit(bit_num, &irq_mask, 8) {
gpio = bit_num + boundary * 8;
- generic_handle_irq(irq_find_mapping(chip->irqdomain,
+ generic_handle_irq(irq_find_mapping(chip->irq.domain,
gpio));
}
}
diff --git a/drivers/gpio/gpio-104-idio-16.c b/drivers/gpio/gpio-104-idio-16.c
index ec2ce34ff473..2f16638a0589 100644
--- a/drivers/gpio/gpio-104-idio-16.c
+++ b/drivers/gpio/gpio-104-idio-16.c
@@ -199,7 +199,7 @@ static irqreturn_t idio_16_irq_handler(int irq, void *dev_id)
int gpio;
for_each_set_bit(gpio, &idio16gpio->irq_mask, chip->ngpio)
- generic_handle_irq(irq_find_mapping(chip->irqdomain, gpio));
+ generic_handle_irq(irq_find_mapping(chip->irq.domain, gpio));
raw_spin_lock(&idio16gpio->lock);
diff --git a/drivers/gpio/gpio-adnp.c b/drivers/gpio/gpio-adnp.c
index 89863ea25de1..44c09904daa6 100644
--- a/drivers/gpio/gpio-adnp.c
+++ b/drivers/gpio/gpio-adnp.c
@@ -192,28 +192,20 @@ static void adnp_gpio_dbg_show(struct seq_file *s, struct gpio_chip *chip)
mutex_lock(&adnp->i2c_lock);
err = adnp_read(adnp, GPIO_DDR(adnp) + i, &ddr);
- if (err < 0) {
- mutex_unlock(&adnp->i2c_lock);
- return;
- }
+ if (err < 0)
+ goto unlock;
err = adnp_read(adnp, GPIO_PLR(adnp) + i, &plr);
- if (err < 0) {
- mutex_unlock(&adnp->i2c_lock);
- return;
- }
+ if (err < 0)
+ goto unlock;
err = adnp_read(adnp, GPIO_IER(adnp) + i, &ier);
- if (err < 0) {
- mutex_unlock(&adnp->i2c_lock);
- return;
- }
+ if (err < 0)
+ goto unlock;
err = adnp_read(adnp, GPIO_ISR(adnp) + i, &isr);
- if (err < 0) {
- mutex_unlock(&adnp->i2c_lock);
- return;
- }
+ if (err < 0)
+ goto unlock;
mutex_unlock(&adnp->i2c_lock);
@@ -240,6 +232,11 @@ static void adnp_gpio_dbg_show(struct seq_file *s, struct gpio_chip *chip)
direction, level, interrupt, pending);
}
}
+
+ return;
+
+unlock:
+ mutex_unlock(&adnp->i2c_lock);
}
static int adnp_gpio_setup(struct adnp *adnp, unsigned int num_gpios)
@@ -323,7 +320,7 @@ static irqreturn_t adnp_irq(int irq, void *data)
for_each_set_bit(bit, &pending, 8) {
unsigned int child_irq;
- child_irq = irq_find_mapping(adnp->gpio.irqdomain,
+ child_irq = irq_find_mapping(adnp->gpio.irq.domain,
base + bit);
handle_nested_irq(child_irq);
}
diff --git a/drivers/gpio/gpio-altera.c b/drivers/gpio/gpio-altera.c
index ccc02ed65b3c..8e76d390e653 100644
--- a/drivers/gpio/gpio-altera.c
+++ b/drivers/gpio/gpio-altera.c
@@ -211,7 +211,7 @@ static void altera_gpio_irq_edge_handler(struct irq_desc *desc)
altera_gc = gpiochip_get_data(irq_desc_get_handler_data(desc));
chip = irq_desc_get_chip(desc);
mm_gc = &altera_gc->mmchip;
- irqdomain = altera_gc->mmchip.gc.irqdomain;
+ irqdomain = altera_gc->mmchip.gc.irq.domain;
chained_irq_enter(chip, desc);
@@ -239,7 +239,7 @@ static void altera_gpio_irq_leveL_high_handler(struct irq_desc *desc)
altera_gc = gpiochip_get_data(irq_desc_get_handler_data(desc));
chip = irq_desc_get_chip(desc);
mm_gc = &altera_gc->mmchip;
- irqdomain = altera_gc->mmchip.gc.irqdomain;
+ irqdomain = altera_gc->mmchip.gc.irq.domain;
chained_irq_enter(chip, desc);
diff --git a/drivers/gpio/gpio-aspeed.c b/drivers/gpio/gpio-aspeed.c
index bfc53995064a..8781817d9003 100644
--- a/drivers/gpio/gpio-aspeed.c
+++ b/drivers/gpio/gpio-aspeed.c
@@ -411,13 +411,16 @@ static int aspeed_gpio_set_type(struct irq_data *d, unsigned int type)
switch (type & IRQ_TYPE_SENSE_MASK) {
case IRQ_TYPE_EDGE_BOTH:
type2 |= bit;
+ /* fall through */
case IRQ_TYPE_EDGE_RISING:
type0 |= bit;
+ /* fall through */
case IRQ_TYPE_EDGE_FALLING:
handler = handle_edge_irq;
break;
case IRQ_TYPE_LEVEL_HIGH:
type0 |= bit;
+ /* fall through */
case IRQ_TYPE_LEVEL_LOW:
type1 |= bit;
handler = handle_level_irq;
@@ -466,7 +469,7 @@ static void aspeed_gpio_irq_handler(struct irq_desc *desc)
reg = ioread32(bank_irq_reg(data, bank, GPIO_IRQ_STATUS));
for_each_set_bit(p, &reg, 32) {
- girq = irq_find_mapping(gc->irqdomain, i * 32 + p);
+ girq = irq_find_mapping(gc->irq.domain, i * 32 + p);
generic_handle_irq(girq);
}
@@ -498,7 +501,7 @@ static void set_irq_valid_mask(struct aspeed_gpio *gpio)
if (i >= gpio->config->nr_gpios)
break;
- clear_bit(i, gpio->chip.irq_valid_mask);
+ clear_bit(i, gpio->chip.irq.valid_mask);
}
props++;
@@ -853,7 +856,7 @@ static int __init aspeed_gpio_probe(struct platform_device *pdev)
gpio->chip.set_config = aspeed_gpio_set_config;
gpio->chip.label = dev_name(&pdev->dev);
gpio->chip.base = -1;
- gpio->chip.irq_need_valid_mask = true;
+ gpio->chip.irq.need_valid_mask = true;
rc = devm_gpiochip_add_data(&pdev->dev, &gpio->chip, gpio);
if (rc < 0)
diff --git a/drivers/gpio/gpio-ath79.c b/drivers/gpio/gpio-ath79.c
index f33d4a5fe671..5fad89dfab7e 100644
--- a/drivers/gpio/gpio-ath79.c
+++ b/drivers/gpio/gpio-ath79.c
@@ -132,6 +132,7 @@ static int ath79_gpio_irq_set_type(struct irq_data *data,
case IRQ_TYPE_LEVEL_HIGH:
polarity |= mask;
+ /* fall through */
case IRQ_TYPE_LEVEL_LOW:
type |= mask;
break;
@@ -208,7 +209,7 @@ static void ath79_gpio_irq_handler(struct irq_desc *desc)
if (pending) {
for_each_set_bit(irq, &pending, gc->ngpio)
generic_handle_irq(
- irq_linear_revmap(gc->irqdomain, irq));
+ irq_linear_revmap(gc->irq.domain, irq));
}
chained_irq_exit(irqchip, desc);
diff --git a/drivers/gpio/gpio-brcmstb.c b/drivers/gpio/gpio-brcmstb.c
index dd0308cc8bb0..545d43a587b7 100644
--- a/drivers/gpio/gpio-brcmstb.c
+++ b/drivers/gpio/gpio-brcmstb.c
@@ -1,5 +1,5 @@
/*
- * Copyright (C) 2015 Broadcom Corporation
+ * Copyright (C) 2015-2017 Broadcom
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
@@ -19,17 +19,30 @@
#include <linux/irqdomain.h>
#include <linux/irqchip/chained_irq.h>
#include <linux/interrupt.h>
-#include <linux/reboot.h>
-
-#define GIO_BANK_SIZE 0x20
-#define GIO_ODEN(bank) (((bank) * GIO_BANK_SIZE) + 0x00)
-#define GIO_DATA(bank) (((bank) * GIO_BANK_SIZE) + 0x04)
-#define GIO_IODIR(bank) (((bank) * GIO_BANK_SIZE) + 0x08)
-#define GIO_EC(bank) (((bank) * GIO_BANK_SIZE) + 0x0c)
-#define GIO_EI(bank) (((bank) * GIO_BANK_SIZE) + 0x10)
-#define GIO_MASK(bank) (((bank) * GIO_BANK_SIZE) + 0x14)
-#define GIO_LEVEL(bank) (((bank) * GIO_BANK_SIZE) + 0x18)
-#define GIO_STAT(bank) (((bank) * GIO_BANK_SIZE) + 0x1c)
+#include <linux/bitops.h>
+
+enum gio_reg_index {
+ GIO_REG_ODEN = 0,
+ GIO_REG_DATA,
+ GIO_REG_IODIR,
+ GIO_REG_EC,
+ GIO_REG_EI,
+ GIO_REG_MASK,
+ GIO_REG_LEVEL,
+ GIO_REG_STAT,
+ NUMBER_OF_GIO_REGISTERS
+};
+
+#define GIO_BANK_SIZE (NUMBER_OF_GIO_REGISTERS * sizeof(u32))
+#define GIO_BANK_OFF(bank, off) (((bank) * GIO_BANK_SIZE) + (off * sizeof(u32)))
+#define GIO_ODEN(bank) GIO_BANK_OFF(bank, GIO_REG_ODEN)
+#define GIO_DATA(bank) GIO_BANK_OFF(bank, GIO_REG_DATA)
+#define GIO_IODIR(bank) GIO_BANK_OFF(bank, GIO_REG_IODIR)
+#define GIO_EC(bank) GIO_BANK_OFF(bank, GIO_REG_EC)
+#define GIO_EI(bank) GIO_BANK_OFF(bank, GIO_REG_EI)
+#define GIO_MASK(bank) GIO_BANK_OFF(bank, GIO_REG_MASK)
+#define GIO_LEVEL(bank) GIO_BANK_OFF(bank, GIO_REG_LEVEL)
+#define GIO_STAT(bank) GIO_BANK_OFF(bank, GIO_REG_STAT)
struct brcmstb_gpio_bank {
struct list_head node;
@@ -37,21 +50,23 @@ struct brcmstb_gpio_bank {
struct gpio_chip gc;
struct brcmstb_gpio_priv *parent_priv;
u32 width;
- struct irq_chip irq_chip;
+ u32 wake_active;
+ u32 saved_regs[GIO_REG_STAT]; /* Don't save and restore GIO_REG_STAT */
};
struct brcmstb_gpio_priv {
struct list_head bank_list;
void __iomem *reg_base;
struct platform_device *pdev;
+ struct irq_domain *irq_domain;
+ struct irq_chip irq_chip;
int parent_irq;
int gpio_base;
- bool can_wake;
+ int num_gpios;
int parent_wake_irq;
- struct notifier_block reboot_notifier;
};
-#define MAX_GPIO_PER_BANK 32
+#define MAX_GPIO_PER_BANK 32
#define GPIO_BANK(gpio) ((gpio) >> 5)
/* assumes MAX_GPIO_PER_BANK is a multiple of 2 */
#define GPIO_BIT(gpio) ((gpio) & (MAX_GPIO_PER_BANK - 1))
@@ -63,12 +78,40 @@ brcmstb_gpio_gc_to_priv(struct gpio_chip *gc)
return bank->parent_priv;
}
+static unsigned long
+__brcmstb_gpio_get_active_irqs(struct brcmstb_gpio_bank *bank)
+{
+ void __iomem *reg_base = bank->parent_priv->reg_base;
+
+ return bank->gc.read_reg(reg_base + GIO_STAT(bank->id)) &
+ bank->gc.read_reg(reg_base + GIO_MASK(bank->id));
+}
+
+static unsigned long
+brcmstb_gpio_get_active_irqs(struct brcmstb_gpio_bank *bank)
+{
+ unsigned long status;
+ unsigned long flags;
+
+ spin_lock_irqsave(&bank->gc.bgpio_lock, flags);
+ status = __brcmstb_gpio_get_active_irqs(bank);
+ spin_unlock_irqrestore(&bank->gc.bgpio_lock, flags);
+
+ return status;
+}
+
+static int brcmstb_gpio_hwirq_to_offset(irq_hw_number_t hwirq,
+ struct brcmstb_gpio_bank *bank)
+{
+ return hwirq - (bank->gc.base - bank->parent_priv->gpio_base);
+}
+
static void brcmstb_gpio_set_imask(struct brcmstb_gpio_bank *bank,
- unsigned int offset, bool enable)
+ unsigned int hwirq, bool enable)
{
struct gpio_chip *gc = &bank->gc;
struct brcmstb_gpio_priv *priv = bank->parent_priv;
- u32 mask = gc->pin2mask(gc, offset);
+ u32 mask = BIT(brcmstb_gpio_hwirq_to_offset(hwirq, bank));
u32 imask;
unsigned long flags;
@@ -82,6 +125,17 @@ static void brcmstb_gpio_set_imask(struct brcmstb_gpio_bank *bank,
spin_unlock_irqrestore(&gc->bgpio_lock, flags);
}
+static int brcmstb_gpio_to_irq(struct gpio_chip *gc, unsigned offset)
+{
+ struct brcmstb_gpio_priv *priv = brcmstb_gpio_gc_to_priv(gc);
+ /* gc_offset is relative to this gpio_chip; want real offset */
+ int hwirq = offset + (gc->base - priv->gpio_base);
+
+ if (hwirq >= priv->num_gpios)
+ return -ENXIO;
+ return irq_create_mapping(priv->irq_domain, hwirq);
+}
+
/* -------------------- IRQ chip functions -------------------- */
static void brcmstb_gpio_irq_mask(struct irq_data *d)
@@ -100,12 +154,22 @@ static void brcmstb_gpio_irq_unmask(struct irq_data *d)
brcmstb_gpio_set_imask(bank, d->hwirq, true);
}
+static void brcmstb_gpio_irq_ack(struct irq_data *d)
+{
+ struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
+ struct brcmstb_gpio_bank *bank = gpiochip_get_data(gc);
+ struct brcmstb_gpio_priv *priv = bank->parent_priv;
+ u32 mask = BIT(brcmstb_gpio_hwirq_to_offset(d->hwirq, bank));
+
+ gc->write_reg(priv->reg_base + GIO_STAT(bank->id), mask);
+}
+
static int brcmstb_gpio_irq_set_type(struct irq_data *d, unsigned int type)
{
struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
struct brcmstb_gpio_bank *bank = gpiochip_get_data(gc);
struct brcmstb_gpio_priv *priv = bank->parent_priv;
- u32 mask = BIT(d->hwirq);
+ u32 mask = BIT(brcmstb_gpio_hwirq_to_offset(d->hwirq, bank));
u32 edge_insensitive, iedge_insensitive;
u32 edge_config, iedge_config;
u32 level, ilevel;
@@ -113,13 +177,13 @@ static int brcmstb_gpio_irq_set_type(struct irq_data *d, unsigned int type)
switch (type) {
case IRQ_TYPE_LEVEL_LOW:
- level = 0;
+ level = mask;
edge_config = 0;
edge_insensitive = 0;
break;
case IRQ_TYPE_LEVEL_HIGH:
level = mask;
- edge_config = 0;
+ edge_config = mask;
edge_insensitive = 0;
break;
case IRQ_TYPE_EDGE_FALLING:
@@ -166,11 +230,6 @@ static int brcmstb_gpio_priv_set_wake(struct brcmstb_gpio_priv *priv,
{
int ret = 0;
- /*
- * Only enable wake IRQ once for however many hwirqs can wake
- * since they all use the same wake IRQ. Mask will be set
- * up appropriately thanks to IRQCHIP_MASK_ON_SUSPEND flag.
- */
if (enable)
ret = enable_irq_wake(priv->parent_wake_irq);
else
@@ -184,7 +243,18 @@ static int brcmstb_gpio_priv_set_wake(struct brcmstb_gpio_priv *priv,
static int brcmstb_gpio_irq_set_wake(struct irq_data *d, unsigned int enable)
{
struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
- struct brcmstb_gpio_priv *priv = brcmstb_gpio_gc_to_priv(gc);
+ struct brcmstb_gpio_bank *bank = gpiochip_get_data(gc);
+ struct brcmstb_gpio_priv *priv = bank->parent_priv;
+ u32 mask = BIT(brcmstb_gpio_hwirq_to_offset(d->hwirq, bank));
+
+ /*
+ * Do not do anything specific for now, suspend/resume callbacks will
+ * configure the interrupt mask appropriately
+ */
+ if (enable)
+ bank->wake_active |= mask;
+ else
+ bank->wake_active &= ~mask;
return brcmstb_gpio_priv_set_wake(priv, enable);
}
@@ -195,43 +265,36 @@ static irqreturn_t brcmstb_gpio_wake_irq_handler(int irq, void *data)
if (!priv || irq != priv->parent_wake_irq)
return IRQ_NONE;
- pm_wakeup_event(&priv->pdev->dev, 0);
+
+ /* Nothing to do */
return IRQ_HANDLED;
}
static void brcmstb_gpio_irq_bank_handler(struct brcmstb_gpio_bank *bank)
{
struct brcmstb_gpio_priv *priv = bank->parent_priv;
- struct irq_domain *irq_domain = bank->gc.irqdomain;
- void __iomem *reg_base = priv->reg_base;
+ struct irq_domain *domain = priv->irq_domain;
+ int hwbase = bank->gc.base - priv->gpio_base;
unsigned long status;
- unsigned long flags;
- spin_lock_irqsave(&bank->gc.bgpio_lock, flags);
- while ((status = bank->gc.read_reg(reg_base + GIO_STAT(bank->id)) &
- bank->gc.read_reg(reg_base + GIO_MASK(bank->id)))) {
- int bit;
-
- for_each_set_bit(bit, &status, 32) {
- u32 stat = bank->gc.read_reg(reg_base +
- GIO_STAT(bank->id));
- if (bit >= bank->width)
+ while ((status = brcmstb_gpio_get_active_irqs(bank))) {
+ unsigned int irq, offset;
+
+ for_each_set_bit(offset, &status, 32) {
+ if (offset >= bank->width)
dev_warn(&priv->pdev->dev,
"IRQ for invalid GPIO (bank=%d, offset=%d)\n",
- bank->id, bit);
- bank->gc.write_reg(reg_base + GIO_STAT(bank->id),
- stat | BIT(bit));
- generic_handle_irq(irq_find_mapping(irq_domain, bit));
+ bank->id, offset);
+ irq = irq_linear_revmap(domain, hwbase + offset);
+ generic_handle_irq(irq);
}
}
- spin_unlock_irqrestore(&bank->gc.bgpio_lock, flags);
}
/* Each UPG GIO block has one IRQ for all banks */
static void brcmstb_gpio_irq_handler(struct irq_desc *desc)
{
- struct gpio_chip *gc = irq_desc_get_handler_data(desc);
- struct brcmstb_gpio_priv *priv = brcmstb_gpio_gc_to_priv(gc);
+ struct brcmstb_gpio_priv *priv = irq_desc_get_handler_data(desc);
struct irq_chip *chip = irq_desc_get_chip(desc);
struct brcmstb_gpio_bank *bank;
@@ -244,19 +307,63 @@ static void brcmstb_gpio_irq_handler(struct irq_desc *desc)
chained_irq_exit(chip, desc);
}
-static int brcmstb_gpio_reboot(struct notifier_block *nb,
- unsigned long action, void *data)
+static struct brcmstb_gpio_bank *brcmstb_gpio_hwirq_to_bank(
+ struct brcmstb_gpio_priv *priv, irq_hw_number_t hwirq)
{
- struct brcmstb_gpio_priv *priv =
- container_of(nb, struct brcmstb_gpio_priv, reboot_notifier);
+ struct brcmstb_gpio_bank *bank;
+ int i = 0;
- /* Enable GPIO for S5 cold boot */
- if (action == SYS_POWER_OFF)
- brcmstb_gpio_priv_set_wake(priv, 1);
+ /* banks are in descending order */
+ list_for_each_entry_reverse(bank, &priv->bank_list, node) {
+ i += bank->gc.ngpio;
+ if (hwirq < i)
+ return bank;
+ }
+ return NULL;
+}
+
+/*
+ * This lock class tells lockdep that GPIO irqs are in a different
+ * category than their parents, so it won't report false recursion.
+ */
+static struct lock_class_key brcmstb_gpio_irq_lock_class;
- return NOTIFY_DONE;
+
+static int brcmstb_gpio_irq_map(struct irq_domain *d, unsigned int irq,
+ irq_hw_number_t hwirq)
+{
+ struct brcmstb_gpio_priv *priv = d->host_data;
+ struct brcmstb_gpio_bank *bank =
+ brcmstb_gpio_hwirq_to_bank(priv, hwirq);
+ struct platform_device *pdev = priv->pdev;
+ int ret;
+
+ if (!bank)
+ return -EINVAL;
+
+ dev_dbg(&pdev->dev, "Mapping irq %d for gpio line %d (bank %d)\n",
+ irq, (int)hwirq, bank->id);
+ ret = irq_set_chip_data(irq, &bank->gc);
+ if (ret < 0)
+ return ret;
+ irq_set_lockdep_class(irq, &brcmstb_gpio_irq_lock_class);
+ irq_set_chip_and_handler(irq, &priv->irq_chip, handle_level_irq);
+ irq_set_noprobe(irq);
+ return 0;
}
+static void brcmstb_gpio_irq_unmap(struct irq_domain *d, unsigned int irq)
+{
+ irq_set_chip_and_handler(irq, NULL, NULL);
+ irq_set_chip_data(irq, NULL);
+}
+
+static const struct irq_domain_ops brcmstb_gpio_irq_domain_ops = {
+ .map = brcmstb_gpio_irq_map,
+ .unmap = brcmstb_gpio_irq_unmap,
+ .xlate = irq_domain_xlate_twocell,
+};
+
/* Make sure that the number of banks matches up between properties */
static int brcmstb_gpio_sanity_check_banks(struct device *dev,
struct device_node *np, struct resource *res)
@@ -278,13 +385,25 @@ static int brcmstb_gpio_remove(struct platform_device *pdev)
{
struct brcmstb_gpio_priv *priv = platform_get_drvdata(pdev);
struct brcmstb_gpio_bank *bank;
- int ret = 0;
+ int offset, ret = 0, virq;
if (!priv) {
dev_err(&pdev->dev, "called %s without drvdata!\n", __func__);
return -EFAULT;
}
+ if (priv->parent_irq > 0)
+ irq_set_chained_handler_and_data(priv->parent_irq, NULL, NULL);
+
+ /* Remove all IRQ mappings and delete the domain */
+ if (priv->irq_domain) {
+ for (offset = 0; offset < priv->num_gpios; offset++) {
+ virq = irq_find_mapping(priv->irq_domain, offset);
+ irq_dispose_mapping(virq);
+ }
+ irq_domain_remove(priv->irq_domain);
+ }
+
/*
* You can lose return values below, but we report all errors, and it's
* more important to actually perform all of the steps.
@@ -292,12 +411,6 @@ static int brcmstb_gpio_remove(struct platform_device *pdev)
list_for_each_entry(bank, &priv->bank_list, node)
gpiochip_remove(&bank->gc);
- if (priv->reboot_notifier.notifier_call) {
- ret = unregister_reboot_notifier(&priv->reboot_notifier);
- if (ret)
- dev_err(&pdev->dev,
- "failed to unregister reboot notifier\n");
- }
return ret;
}
@@ -332,66 +445,163 @@ static int brcmstb_gpio_of_xlate(struct gpio_chip *gc,
return offset;
}
-/* Before calling, must have bank->parent_irq set and gpiochip registered */
+/* priv->parent_irq and priv->num_gpios must be set before calling */
static int brcmstb_gpio_irq_setup(struct platform_device *pdev,
- struct brcmstb_gpio_bank *bank)
+ struct brcmstb_gpio_priv *priv)
{
- struct brcmstb_gpio_priv *priv = bank->parent_priv;
struct device *dev = &pdev->dev;
struct device_node *np = dev->of_node;
int err;
- bank->irq_chip.name = dev_name(dev);
- bank->irq_chip.irq_mask = brcmstb_gpio_irq_mask;
- bank->irq_chip.irq_unmask = brcmstb_gpio_irq_unmask;
- bank->irq_chip.irq_set_type = brcmstb_gpio_irq_set_type;
-
- /* Ensures that all non-wakeup IRQs are disabled at suspend */
- bank->irq_chip.flags = IRQCHIP_MASK_ON_SUSPEND;
+ priv->irq_domain =
+ irq_domain_add_linear(np, priv->num_gpios,
+ &brcmstb_gpio_irq_domain_ops,
+ priv);
+ if (!priv->irq_domain) {
+ dev_err(dev, "Couldn't allocate IRQ domain\n");
+ return -ENXIO;
+ }
- if (IS_ENABLED(CONFIG_PM_SLEEP) && !priv->can_wake &&
- of_property_read_bool(np, "wakeup-source")) {
+ if (of_property_read_bool(np, "wakeup-source")) {
priv->parent_wake_irq = platform_get_irq(pdev, 1);
if (priv->parent_wake_irq < 0) {
+ priv->parent_wake_irq = 0;
dev_warn(dev,
"Couldn't get wake IRQ - GPIOs will not be able to wake from sleep");
} else {
/*
- * Set wakeup capability before requesting wakeup
- * interrupt, so we can process boot-time "wakeups"
- * (e.g., from S5 cold boot)
+ * Set wakeup capability so we can process boot-time
+ * "wakeups" (e.g., from S5 cold boot)
*/
device_set_wakeup_capable(dev, true);
device_wakeup_enable(dev);
err = devm_request_irq(dev, priv->parent_wake_irq,
- brcmstb_gpio_wake_irq_handler, 0,
- "brcmstb-gpio-wake", priv);
+ brcmstb_gpio_wake_irq_handler,
+ IRQF_SHARED,
+ "brcmstb-gpio-wake", priv);
if (err < 0) {
dev_err(dev, "Couldn't request wake IRQ");
- return err;
+ goto out_free_domain;
}
-
- priv->reboot_notifier.notifier_call =
- brcmstb_gpio_reboot;
- register_reboot_notifier(&priv->reboot_notifier);
- priv->can_wake = true;
}
}
- if (priv->can_wake)
- bank->irq_chip.irq_set_wake = brcmstb_gpio_irq_set_wake;
+ priv->irq_chip.name = dev_name(dev);
+ priv->irq_chip.irq_disable = brcmstb_gpio_irq_mask;
+ priv->irq_chip.irq_mask = brcmstb_gpio_irq_mask;
+ priv->irq_chip.irq_unmask = brcmstb_gpio_irq_unmask;
+ priv->irq_chip.irq_ack = brcmstb_gpio_irq_ack;
+ priv->irq_chip.irq_set_type = brcmstb_gpio_irq_set_type;
+
+ if (priv->parent_wake_irq)
+ priv->irq_chip.irq_set_wake = brcmstb_gpio_irq_set_wake;
+
+ irq_set_chained_handler_and_data(priv->parent_irq,
+ brcmstb_gpio_irq_handler, priv);
+ irq_set_status_flags(priv->parent_irq, IRQ_DISABLE_UNLAZY);
+
+ return 0;
+
+out_free_domain:
+ irq_domain_remove(priv->irq_domain);
+
+ return err;
+}
+
+static void brcmstb_gpio_bank_save(struct brcmstb_gpio_priv *priv,
+ struct brcmstb_gpio_bank *bank)
+{
+ struct gpio_chip *gc = &bank->gc;
+ unsigned int i;
+
+ for (i = 0; i < GIO_REG_STAT; i++)
+ bank->saved_regs[i] = gc->read_reg(priv->reg_base +
+ GIO_BANK_OFF(bank->id, i));
+}
+
+static void brcmstb_gpio_quiesce(struct device *dev, bool save)
+{
+ struct brcmstb_gpio_priv *priv = dev_get_drvdata(dev);
+ struct brcmstb_gpio_bank *bank;
+ struct gpio_chip *gc;
+ u32 imask;
+
+ /* disable non-wake interrupt */
+ if (priv->parent_irq >= 0)
+ disable_irq(priv->parent_irq);
+
+ list_for_each_entry(bank, &priv->bank_list, node) {
+ gc = &bank->gc;
+
+ if (save)
+ brcmstb_gpio_bank_save(priv, bank);
+
+ /* Unmask GPIOs which have been flagged as wake-up sources */
+ if (priv->parent_wake_irq)
+ imask = bank->wake_active;
+ else
+ imask = 0;
+ gc->write_reg(priv->reg_base + GIO_MASK(bank->id),
+ imask);
+ }
+}
+
+static void brcmstb_gpio_shutdown(struct platform_device *pdev)
+{
+ /* Enable GPIO for S5 cold boot */
+ brcmstb_gpio_quiesce(&pdev->dev, false);
+}
+
+#ifdef CONFIG_PM_SLEEP
+static void brcmstb_gpio_bank_restore(struct brcmstb_gpio_priv *priv,
+ struct brcmstb_gpio_bank *bank)
+{
+ struct gpio_chip *gc = &bank->gc;
+ unsigned int i;
+
+ for (i = 0; i < GIO_REG_STAT; i++)
+ gc->write_reg(priv->reg_base + GIO_BANK_OFF(bank->id, i),
+ bank->saved_regs[i]);
+}
+
+static int brcmstb_gpio_suspend(struct device *dev)
+{
+ brcmstb_gpio_quiesce(dev, true);
+ return 0;
+}
+
+static int brcmstb_gpio_resume(struct device *dev)
+{
+ struct brcmstb_gpio_priv *priv = dev_get_drvdata(dev);
+ struct brcmstb_gpio_bank *bank;
+ bool need_wakeup_event = false;
+
+ list_for_each_entry(bank, &priv->bank_list, node) {
+ need_wakeup_event |= !!__brcmstb_gpio_get_active_irqs(bank);
+ brcmstb_gpio_bank_restore(priv, bank);
+ }
+
+ if (priv->parent_wake_irq && need_wakeup_event)
+ pm_wakeup_event(dev, 0);
- err = gpiochip_irqchip_add(&bank->gc, &bank->irq_chip, 0,
- handle_simple_irq, IRQ_TYPE_NONE);
- if (err)
- return err;
- gpiochip_set_chained_irqchip(&bank->gc, &bank->irq_chip,
- priv->parent_irq, brcmstb_gpio_irq_handler);
+ /* enable non-wake interrupt */
+ if (priv->parent_irq >= 0)
+ enable_irq(priv->parent_irq);
return 0;
}
+#else
+#define brcmstb_gpio_suspend NULL
+#define brcmstb_gpio_resume NULL
+#endif /* CONFIG_PM_SLEEP */
+
+static const struct dev_pm_ops brcmstb_gpio_pm_ops = {
+ .suspend_noirq = brcmstb_gpio_suspend,
+ .resume_noirq = brcmstb_gpio_resume,
+};
+
static int brcmstb_gpio_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
@@ -406,6 +616,7 @@ static int brcmstb_gpio_probe(struct platform_device *pdev)
int err;
static int gpio_base;
unsigned long flags = 0;
+ bool need_wakeup_event = false;
priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
if (!priv)
@@ -485,16 +696,23 @@ static int brcmstb_gpio_probe(struct platform_device *pdev)
gc->of_node = np;
gc->owner = THIS_MODULE;
gc->label = devm_kasprintf(dev, GFP_KERNEL, "%pOF", dev->of_node);
+ if (!gc->label) {
+ err = -ENOMEM;
+ goto fail;
+ }
gc->base = gpio_base;
gc->of_gpio_n_cells = 2;
gc->of_xlate = brcmstb_gpio_of_xlate;
/* not all ngpio lines are valid, will use bank width later */
gc->ngpio = MAX_GPIO_PER_BANK;
+ if (priv->parent_irq > 0)
+ gc->to_irq = brcmstb_gpio_to_irq;
/*
* Mask all interrupts by default, since wakeup interrupts may
* be retained from S5 cold boot
*/
+ need_wakeup_event |= !!__brcmstb_gpio_get_active_irqs(bank);
gc->write_reg(reg_base + GIO_MASK(bank->id), 0);
err = gpiochip_add_data(gc, bank);
@@ -505,12 +723,6 @@ static int brcmstb_gpio_probe(struct platform_device *pdev)
}
gpio_base += gc->ngpio;
- if (priv->parent_irq > 0) {
- err = brcmstb_gpio_irq_setup(pdev, bank);
- if (err)
- goto fail;
- }
-
dev_dbg(dev, "bank=%d, base=%d, ngpio=%d, width=%d\n", bank->id,
gc->base, gc->ngpio, bank->width);
@@ -520,9 +732,19 @@ static int brcmstb_gpio_probe(struct platform_device *pdev)
num_banks++;
}
+ priv->num_gpios = gpio_base - priv->gpio_base;
+ if (priv->parent_irq > 0) {
+ err = brcmstb_gpio_irq_setup(pdev, priv);
+ if (err)
+ goto fail;
+ }
+
dev_info(dev, "Registered %d banks (GPIO(s): %d-%d)\n",
num_banks, priv->gpio_base, gpio_base - 1);
+ if (priv->parent_wake_irq && need_wakeup_event)
+ pm_wakeup_event(dev, 0);
+
return 0;
fail:
@@ -541,9 +763,11 @@ static struct platform_driver brcmstb_gpio_driver = {
.driver = {
.name = "brcmstb-gpio",
.of_match_table = brcmstb_gpio_of_match,
+ .pm = &brcmstb_gpio_pm_ops,
},
.probe = brcmstb_gpio_probe,
.remove = brcmstb_gpio_remove,
+ .shutdown = brcmstb_gpio_shutdown,
};
module_platform_driver(brcmstb_gpio_driver);
diff --git a/drivers/gpio/gpio-crystalcove.c b/drivers/gpio/gpio-crystalcove.c
index e60156ec0c18..b6f0f729656c 100644
--- a/drivers/gpio/gpio-crystalcove.c
+++ b/drivers/gpio/gpio-crystalcove.c
@@ -295,7 +295,7 @@ static irqreturn_t crystalcove_gpio_irq_handler(int irq, void *data)
for (gpio = 0; gpio < CRYSTALCOVE_GPIO_NUM; gpio++) {
if (pending & BIT(gpio)) {
- virq = irq_find_mapping(cg->chip.irqdomain, gpio);
+ virq = irq_find_mapping(cg->chip.irq.domain, gpio);
handle_nested_irq(virq);
}
}
diff --git a/drivers/gpio/gpio-dln2.c b/drivers/gpio/gpio-dln2.c
index aecb847166f5..1dada68b9a27 100644
--- a/drivers/gpio/gpio-dln2.c
+++ b/drivers/gpio/gpio-dln2.c
@@ -420,7 +420,7 @@ static void dln2_gpio_event(struct platform_device *pdev, u16 echo,
return;
}
- irq = irq_find_mapping(dln2->gpio.irqdomain, pin);
+ irq = irq_find_mapping(dln2->gpio.irq.domain, pin);
if (!irq) {
dev_err(dln2->gpio.parent, "pin %d not mapped to IRQ\n", pin);
return;
diff --git a/drivers/gpio/gpio-dwapb.c b/drivers/gpio/gpio-dwapb.c
index c07ada9c7af6..6730c6642ce3 100644
--- a/drivers/gpio/gpio-dwapb.c
+++ b/drivers/gpio/gpio-dwapb.c
@@ -25,6 +25,7 @@
#include <linux/of_irq.h>
#include <linux/platform_device.h>
#include <linux/property.h>
+#include <linux/reset.h>
#include <linux/spinlock.h>
#include <linux/platform_data/gpio-dwapb.h>
#include <linux/slab.h>
@@ -77,6 +78,7 @@ struct dwapb_context {
u32 int_type;
u32 int_pol;
u32 int_deb;
+ u32 wake_en;
};
#endif
@@ -97,6 +99,7 @@ struct dwapb_gpio {
unsigned int nr_ports;
struct irq_domain *domain;
unsigned int flags;
+ struct reset_control *rst;
};
static inline u32 gpio_reg_v2_convert(unsigned int offset)
@@ -295,13 +298,29 @@ static int dwapb_irq_set_type(struct irq_data *d, u32 type)
return 0;
}
+#ifdef CONFIG_PM_SLEEP
+static int dwapb_irq_set_wake(struct irq_data *d, unsigned int enable)
+{
+ struct irq_chip_generic *igc = irq_data_get_irq_chip_data(d);
+ struct dwapb_gpio *gpio = igc->private;
+ struct dwapb_context *ctx = gpio->ports[0].ctx;
+
+ if (enable)
+ ctx->wake_en |= BIT(d->hwirq);
+ else
+ ctx->wake_en &= ~BIT(d->hwirq);
+
+ return 0;
+}
+#endif
+
static int dwapb_gpio_set_debounce(struct gpio_chip *gc,
unsigned offset, unsigned debounce)
{
struct dwapb_gpio_port *port = gpiochip_get_data(gc);
struct dwapb_gpio *gpio = port->gpio;
unsigned long flags, val_deb;
- unsigned long mask = gc->pin2mask(gc, offset);
+ unsigned long mask = BIT(offset);
spin_lock_irqsave(&gc->bgpio_lock, flags);
@@ -385,6 +404,9 @@ static void dwapb_configure_irqs(struct dwapb_gpio *gpio,
ct->chip.irq_disable = dwapb_irq_disable;
ct->chip.irq_request_resources = dwapb_irq_reqres;
ct->chip.irq_release_resources = dwapb_irq_relres;
+#ifdef CONFIG_PM_SLEEP
+ ct->chip.irq_set_wake = dwapb_irq_set_wake;
+#endif
ct->regs.ack = gpio_reg_convert(gpio, GPIO_PORTA_EOI);
ct->regs.mask = gpio_reg_convert(gpio, GPIO_INTMASK);
ct->type = IRQ_TYPE_LEVEL_MASK;
@@ -460,7 +482,7 @@ static int dwapb_gpio_add_port(struct dwapb_gpio *gpio,
(pp->idx * GPIO_SWPORT_DDR_SIZE);
err = bgpio_init(&port->gc, gpio->dev, 4, dat, set, NULL, dirout,
- NULL, false);
+ NULL, 0);
if (err) {
dev_err(gpio->dev, "failed to init gpio chip for port%d\n",
port->idx);
@@ -609,6 +631,12 @@ static int dwapb_gpio_probe(struct platform_device *pdev)
gpio->dev = &pdev->dev;
gpio->nr_ports = pdata->nports;
+ gpio->rst = devm_reset_control_get_optional_shared(dev, NULL);
+ if (IS_ERR(gpio->rst))
+ return PTR_ERR(gpio->rst);
+
+ reset_control_deassert(gpio->rst);
+
gpio->ports = devm_kcalloc(&pdev->dev, gpio->nr_ports,
sizeof(*gpio->ports), GFP_KERNEL);
if (!gpio->ports)
@@ -660,6 +688,7 @@ static int dwapb_gpio_remove(struct platform_device *pdev)
dwapb_gpio_unregister(gpio);
dwapb_irq_teardown(gpio);
+ reset_control_assert(gpio->rst);
return 0;
}
@@ -699,7 +728,8 @@ static int dwapb_gpio_suspend(struct device *dev)
ctx->int_deb = dwapb_read(gpio, GPIO_PORTA_DEBOUNCE);
/* Mask out interrupts */
- dwapb_write(gpio, GPIO_INTMASK, 0xffffffff);
+ dwapb_write(gpio, GPIO_INTMASK,
+ 0xffffffff & ~ctx->wake_en);
}
}
spin_unlock_irqrestore(&gc->bgpio_lock, flags);
diff --git a/drivers/gpio/gpio-ftgpio010.c b/drivers/gpio/gpio-ftgpio010.c
index 139f73d3f4ba..7b3394fdc624 100644
--- a/drivers/gpio/gpio-ftgpio010.c
+++ b/drivers/gpio/gpio-ftgpio010.c
@@ -150,7 +150,7 @@ static void ftgpio_gpio_irq_handler(struct irq_desc *desc)
stat = readl(g->base + GPIO_INT_STAT);
if (stat)
for_each_set_bit(offset, &stat, gc->ngpio)
- generic_handle_irq(irq_find_mapping(gc->irqdomain,
+ generic_handle_irq(irq_find_mapping(gc->irq.domain,
offset));
chained_irq_exit(irqchip, desc);
diff --git a/drivers/gpio/gpio-grgpio.c b/drivers/gpio/gpio-grgpio.c
index 6544a16ab02e..e2fc561f4315 100644
--- a/drivers/gpio/gpio-grgpio.c
+++ b/drivers/gpio/gpio-grgpio.c
@@ -35,6 +35,7 @@
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/irqdomain.h>
+#include <linux/bitops.h>
#define GRGPIO_MAX_NGPIO 32
@@ -96,12 +97,11 @@ static void grgpio_set_imask(struct grgpio_priv *priv, unsigned int offset,
int val)
{
struct gpio_chip *gc = &priv->gc;
- unsigned long mask = gc->pin2mask(gc, offset);
if (val)
- priv->imask |= mask;
+ priv->imask |= BIT(offset);
else
- priv->imask &= ~mask;
+ priv->imask &= ~BIT(offset);
gc->write_reg(priv->regs + GRGPIO_IMASK, priv->imask);
}
diff --git a/drivers/gpio/gpio-ingenic.c b/drivers/gpio/gpio-ingenic.c
index 254780730b95..15fb2bc796a8 100644
--- a/drivers/gpio/gpio-ingenic.c
+++ b/drivers/gpio/gpio-ingenic.c
@@ -242,7 +242,7 @@ static void ingenic_gpio_irq_handler(struct irq_desc *desc)
flag = gpio_ingenic_read_reg(jzgc, JZ4740_GPIO_FLAG);
for_each_set_bit(i, &flag, 32)
- generic_handle_irq(irq_linear_revmap(gc->irqdomain, i));
+ generic_handle_irq(irq_linear_revmap(gc->irq.domain, i));
chained_irq_exit(irq_chip, desc);
}
diff --git a/drivers/gpio/gpio-intel-mid.c b/drivers/gpio/gpio-intel-mid.c
index b76ecee82c3f..629575ea46a0 100644
--- a/drivers/gpio/gpio-intel-mid.c
+++ b/drivers/gpio/gpio-intel-mid.c
@@ -295,7 +295,7 @@ static void intel_mid_irq_handler(struct irq_desc *desc)
mask = BIT(gpio);
/* Clear before handling so we can't lose an edge */
writel(mask, gedr);
- generic_handle_irq(irq_find_mapping(gc->irqdomain,
+ generic_handle_irq(irq_find_mapping(gc->irq.domain,
base + gpio));
}
}
diff --git a/drivers/gpio/gpio-loongson1.c b/drivers/gpio/gpio-loongson1.c
index 72b64039241a..fca84ccac35c 100644
--- a/drivers/gpio/gpio-loongson1.c
+++ b/drivers/gpio/gpio-loongson1.c
@@ -11,6 +11,7 @@
#include <linux/module.h>
#include <linux/gpio/driver.h>
#include <linux/platform_device.h>
+#include <linux/bitops.h>
/* Loongson 1 GPIO Register Definitions */
#define GPIO_CFG 0x0
@@ -22,11 +23,10 @@ static void __iomem *gpio_reg_base;
static int ls1x_gpio_request(struct gpio_chip *gc, unsigned int offset)
{
- unsigned long pinmask = gc->pin2mask(gc, offset);
unsigned long flags;
spin_lock_irqsave(&gc->bgpio_lock, flags);
- __raw_writel(__raw_readl(gpio_reg_base + GPIO_CFG) | pinmask,
+ __raw_writel(__raw_readl(gpio_reg_base + GPIO_CFG) | BIT(offset),
gpio_reg_base + GPIO_CFG);
spin_unlock_irqrestore(&gc->bgpio_lock, flags);
@@ -35,11 +35,10 @@ static int ls1x_gpio_request(struct gpio_chip *gc, unsigned int offset)
static void ls1x_gpio_free(struct gpio_chip *gc, unsigned int offset)
{
- unsigned long pinmask = gc->pin2mask(gc, offset);
unsigned long flags;
spin_lock_irqsave(&gc->bgpio_lock, flags);
- __raw_writel(__raw_readl(gpio_reg_base + GPIO_CFG) & ~pinmask,
+ __raw_writel(__raw_readl(gpio_reg_base + GPIO_CFG) & ~BIT(offset),
gpio_reg_base + GPIO_CFG);
spin_unlock_irqrestore(&gc->bgpio_lock, flags);
}
diff --git a/drivers/gpio/gpio-lynxpoint.c b/drivers/gpio/gpio-lynxpoint.c
index fbd393b46ce0..1e557b10d73e 100644
--- a/drivers/gpio/gpio-lynxpoint.c
+++ b/drivers/gpio/gpio-lynxpoint.c
@@ -255,7 +255,7 @@ static void lp_gpio_irq_handler(struct irq_desc *desc)
mask = BIT(pin);
/* Clear before handling so we don't lose an edge */
outl(mask, reg);
- irq = irq_find_mapping(lg->chip.irqdomain, base + pin);
+ irq = irq_find_mapping(lg->chip.irq.domain, base + pin);
generic_handle_irq(irq);
}
}
diff --git a/drivers/gpio/gpio-max3191x.c b/drivers/gpio/gpio-max3191x.c
new file mode 100644
index 000000000000..f74b1072e84b
--- /dev/null
+++ b/drivers/gpio/gpio-max3191x.c
@@ -0,0 +1,492 @@
+/*
+ * gpio-max3191x.c - GPIO driver for Maxim MAX3191x industrial serializer
+ *
+ * Copyright (C) 2017 KUNBUS GmbH
+ *
+ * The MAX3191x makes 8 digital 24V inputs available via SPI.
+ * Multiple chips can be daisy-chained, the spec does not impose
+ * a limit on the number of chips and neither does this driver.
+ *
+ * Either of two modes is selectable: In 8-bit mode, only the state
+ * of the inputs is clocked out to achieve high readout speeds;
+ * In 16-bit mode, an additional status byte is clocked out with
+ * a CRC and indicator bits for undervoltage and overtemperature.
+ * The driver returns an error instead of potentially bogus data
+ * if any of these fault conditions occur. However it does allow
+ * readout of non-faulting chips in the same daisy-chain.
+ *
+ * MAX3191x supports four debounce settings and the driver is
+ * capable of configuring these differently for each chip in the
+ * daisy-chain.
+ *
+ * If the chips are hardwired to 8-bit mode ("modesel" pulled high),
+ * gpio-pisosr.c can be used alternatively to this driver.
+ *
+ * https://datasheets.maximintegrated.com/en/ds/MAX31910.pdf
+ * https://datasheets.maximintegrated.com/en/ds/MAX31911.pdf
+ * https://datasheets.maximintegrated.com/en/ds/MAX31912.pdf
+ * https://datasheets.maximintegrated.com/en/ds/MAX31913.pdf
+ * https://datasheets.maximintegrated.com/en/ds/MAX31953-MAX31963.pdf
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License (version 2) as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/bitmap.h>
+#include <linux/crc8.h>
+#include <linux/gpio/consumer.h>
+#include <linux/gpio/driver.h>
+#include <linux/module.h>
+#include <linux/spi/spi.h>
+
+enum max3191x_mode {
+ STATUS_BYTE_ENABLED,
+ STATUS_BYTE_DISABLED,
+};
+
+/**
+ * struct max3191x_chip - max3191x daisy-chain
+ * @gpio: GPIO controller struct
+ * @lock: protects read sequences
+ * @nchips: number of chips in the daisy-chain
+ * @mode: current mode, 0 for 16-bit, 1 for 8-bit;
+ * for simplicity, all chips in the daisy-chain are assumed
+ * to use the same mode
+ * @modesel_pins: GPIO pins to configure modesel of each chip
+ * @fault_pins: GPIO pins to detect fault of each chip
+ * @db0_pins: GPIO pins to configure debounce of each chip
+ * @db1_pins: GPIO pins to configure debounce of each chip
+ * @mesg: SPI message to perform a readout
+ * @xfer: SPI transfer used by @mesg
+ * @crc_error: bitmap signaling CRC error for each chip
+ * @overtemp: bitmap signaling overtemperature alarm for each chip
+ * @undervolt1: bitmap signaling undervoltage alarm for each chip
+ * @undervolt2: bitmap signaling undervoltage warning for each chip
+ * @fault: bitmap signaling assertion of @fault_pins for each chip
+ * @ignore_uv: whether to ignore undervoltage alarms;
+ * set by a device property if the chips are powered through
+ * 5VOUT instead of VCC24V, in which case they will constantly
+ * signal undervoltage;
+ * for simplicity, all chips in the daisy-chain are assumed
+ * to be powered the same way
+ */
+struct max3191x_chip {
+ struct gpio_chip gpio;
+ struct mutex lock;
+ u32 nchips;
+ enum max3191x_mode mode;
+ struct gpio_descs *modesel_pins;
+ struct gpio_descs *fault_pins;
+ struct gpio_descs *db0_pins;
+ struct gpio_descs *db1_pins;
+ struct spi_message mesg;
+ struct spi_transfer xfer;
+ unsigned long *crc_error;
+ unsigned long *overtemp;
+ unsigned long *undervolt1;
+ unsigned long *undervolt2;
+ unsigned long *fault;
+ bool ignore_uv;
+};
+
+#define MAX3191X_NGPIO 8
+#define MAX3191X_CRC8_POLYNOMIAL 0xa8 /* (x^5) + x^4 + x^2 + x^0 */
+
+DECLARE_CRC8_TABLE(max3191x_crc8);
+
+static int max3191x_get_direction(struct gpio_chip *gpio, unsigned int offset)
+{
+ return 1; /* always in */
+}
+
+static int max3191x_direction_input(struct gpio_chip *gpio, unsigned int offset)
+{
+ return 0;
+}
+
+static int max3191x_direction_output(struct gpio_chip *gpio,
+ unsigned int offset, int value)
+{
+ return -EINVAL;
+}
+
+static void max3191x_set(struct gpio_chip *gpio, unsigned int offset, int value)
+{ }
+
+static void max3191x_set_multiple(struct gpio_chip *gpio, unsigned long *mask,
+ unsigned long *bits)
+{ }
+
+static unsigned int max3191x_wordlen(struct max3191x_chip *max3191x)
+{
+ return max3191x->mode == STATUS_BYTE_ENABLED ? 2 : 1;
+}
+
+static int max3191x_readout_locked(struct max3191x_chip *max3191x)
+{
+ struct device *dev = max3191x->gpio.parent;
+ struct spi_device *spi = to_spi_device(dev);
+ int val, i, ot = 0, uv1 = 0;
+
+ val = spi_sync(spi, &max3191x->mesg);
+ if (val) {
+ dev_err_ratelimited(dev, "SPI receive error %d\n", val);
+ return val;
+ }
+
+ for (i = 0; i < max3191x->nchips; i++) {
+ if (max3191x->mode == STATUS_BYTE_ENABLED) {
+ u8 in = ((u8 *)max3191x->xfer.rx_buf)[i * 2];
+ u8 status = ((u8 *)max3191x->xfer.rx_buf)[i * 2 + 1];
+
+ val = (status & 0xf8) != crc8(max3191x_crc8, &in, 1, 0);
+ __assign_bit(i, max3191x->crc_error, val);
+ if (val)
+ dev_err_ratelimited(dev,
+ "chip %d: CRC error\n", i);
+
+ ot = (status >> 1) & 1;
+ __assign_bit(i, max3191x->overtemp, ot);
+ if (ot)
+ dev_err_ratelimited(dev,
+ "chip %d: overtemperature\n", i);
+
+ if (!max3191x->ignore_uv) {
+ uv1 = !((status >> 2) & 1);
+ __assign_bit(i, max3191x->undervolt1, uv1);
+ if (uv1)
+ dev_err_ratelimited(dev,
+ "chip %d: undervoltage\n", i);
+
+ val = !(status & 1);
+ __assign_bit(i, max3191x->undervolt2, val);
+ if (val && !uv1)
+ dev_warn_ratelimited(dev,
+ "chip %d: voltage warn\n", i);
+ }
+ }
+
+ if (max3191x->fault_pins && !max3191x->ignore_uv) {
+ /* fault pin shared by all chips or per chip */
+ struct gpio_desc *fault_pin =
+ (max3191x->fault_pins->ndescs == 1)
+ ? max3191x->fault_pins->desc[0]
+ : max3191x->fault_pins->desc[i];
+
+ val = gpiod_get_value_cansleep(fault_pin);
+ if (val < 0) {
+ dev_err_ratelimited(dev,
+ "GPIO read error %d\n", val);
+ return val;
+ }
+ __assign_bit(i, max3191x->fault, val);
+ if (val && !uv1 && !ot)
+ dev_err_ratelimited(dev,
+ "chip %d: fault\n", i);
+ }
+ }
+
+ return 0;
+}
+
+static bool max3191x_chip_is_faulting(struct max3191x_chip *max3191x,
+ unsigned int chipnum)
+{
+ /* without status byte the only diagnostic is the fault pin */
+ if (!max3191x->ignore_uv && test_bit(chipnum, max3191x->fault))
+ return true;
+
+ if (max3191x->mode == STATUS_BYTE_DISABLED)
+ return false;
+
+ return test_bit(chipnum, max3191x->crc_error) ||
+ test_bit(chipnum, max3191x->overtemp) ||
+ (!max3191x->ignore_uv &&
+ test_bit(chipnum, max3191x->undervolt1));
+}
+
+static int max3191x_get(struct gpio_chip *gpio, unsigned int offset)
+{
+ struct max3191x_chip *max3191x = gpiochip_get_data(gpio);
+ int ret, chipnum, wordlen = max3191x_wordlen(max3191x);
+ u8 in;
+
+ mutex_lock(&max3191x->lock);
+ ret = max3191x_readout_locked(max3191x);
+ if (ret)
+ goto out_unlock;
+
+ chipnum = offset / MAX3191X_NGPIO;
+ if (max3191x_chip_is_faulting(max3191x, chipnum)) {
+ ret = -EIO;
+ goto out_unlock;
+ }
+
+ in = ((u8 *)max3191x->xfer.rx_buf)[chipnum * wordlen];
+ ret = (in >> (offset % MAX3191X_NGPIO)) & 1;
+
+out_unlock:
+ mutex_unlock(&max3191x->lock);
+ return ret;
+}
+
+static int max3191x_get_multiple(struct gpio_chip *gpio, unsigned long *mask,
+ unsigned long *bits)
+{
+ struct max3191x_chip *max3191x = gpiochip_get_data(gpio);
+ int ret, bit = 0, wordlen = max3191x_wordlen(max3191x);
+
+ mutex_lock(&max3191x->lock);
+ ret = max3191x_readout_locked(max3191x);
+ if (ret)
+ goto out_unlock;
+
+ while ((bit = find_next_bit(mask, gpio->ngpio, bit)) != gpio->ngpio) {
+ unsigned int chipnum = bit / MAX3191X_NGPIO;
+ unsigned long in, shift, index;
+
+ if (max3191x_chip_is_faulting(max3191x, chipnum)) {
+ ret = -EIO;
+ goto out_unlock;
+ }
+
+ in = ((u8 *)max3191x->xfer.rx_buf)[chipnum * wordlen];
+ shift = round_down(bit % BITS_PER_LONG, MAX3191X_NGPIO);
+ index = bit / BITS_PER_LONG;
+ bits[index] &= ~(mask[index] & (0xff << shift));
+ bits[index] |= mask[index] & (in << shift); /* copy bits */
+
+ bit = (chipnum + 1) * MAX3191X_NGPIO; /* go to next chip */
+ }
+
+out_unlock:
+ mutex_unlock(&max3191x->lock);
+ return ret;
+}
+
+static int max3191x_set_config(struct gpio_chip *gpio, unsigned int offset,
+ unsigned long config)
+{
+ struct max3191x_chip *max3191x = gpiochip_get_data(gpio);
+ u32 debounce, chipnum, db0_val, db1_val;
+
+ if (pinconf_to_config_param(config) != PIN_CONFIG_INPUT_DEBOUNCE)
+ return -ENOTSUPP;
+
+ if (!max3191x->db0_pins || !max3191x->db1_pins)
+ return -EINVAL;
+
+ debounce = pinconf_to_config_argument(config);
+ switch (debounce) {
+ case 0:
+ db0_val = 0;
+ db1_val = 0;
+ break;
+ case 1 ... 25:
+ db0_val = 0;
+ db1_val = 1;
+ break;
+ case 26 ... 750:
+ db0_val = 1;
+ db1_val = 0;
+ break;
+ case 751 ... 3000:
+ db0_val = 1;
+ db1_val = 1;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ if (max3191x->db0_pins->ndescs == 1)
+ chipnum = 0; /* all chips use the same pair of debounce pins */
+ else
+ chipnum = offset / MAX3191X_NGPIO; /* per chip debounce pins */
+
+ mutex_lock(&max3191x->lock);
+ gpiod_set_value_cansleep(max3191x->db0_pins->desc[chipnum], db0_val);
+ gpiod_set_value_cansleep(max3191x->db1_pins->desc[chipnum], db1_val);
+ mutex_unlock(&max3191x->lock);
+ return 0;
+}
+
+static void gpiod_set_array_single_value_cansleep(unsigned int ndescs,
+ struct gpio_desc **desc,
+ int value)
+{
+ int i, values[ndescs];
+
+ for (i = 0; i < ndescs; i++)
+ values[i] = value;
+
+ gpiod_set_array_value_cansleep(ndescs, desc, values);
+}
+
+static struct gpio_descs *devm_gpiod_get_array_optional_count(
+ struct device *dev, const char *con_id,
+ enum gpiod_flags flags, unsigned int expected)
+{
+ struct gpio_descs *descs;
+ int found = gpiod_count(dev, con_id);
+
+ if (found == -ENOENT)
+ return NULL;
+
+ if (found != expected && found != 1) {
+ dev_err(dev, "ignoring %s-gpios: found %d, expected %u or 1\n",
+ con_id, found, expected);
+ return NULL;
+ }
+
+ descs = devm_gpiod_get_array_optional(dev, con_id, flags);
+
+ if (IS_ERR(descs)) {
+ dev_err(dev, "failed to get %s-gpios: %ld\n",
+ con_id, PTR_ERR(descs));
+ return NULL;
+ }
+
+ return descs;
+}
+
+static int max3191x_probe(struct spi_device *spi)
+{
+ struct device *dev = &spi->dev;
+ struct max3191x_chip *max3191x;
+ int n, ret;
+
+ max3191x = devm_kzalloc(dev, sizeof(*max3191x), GFP_KERNEL);
+ if (!max3191x)
+ return -ENOMEM;
+ spi_set_drvdata(spi, max3191x);
+
+ max3191x->nchips = 1;
+ device_property_read_u32(dev, "#daisy-chained-devices",
+ &max3191x->nchips);
+
+ n = BITS_TO_LONGS(max3191x->nchips);
+ max3191x->crc_error = devm_kcalloc(dev, n, sizeof(long), GFP_KERNEL);
+ max3191x->undervolt1 = devm_kcalloc(dev, n, sizeof(long), GFP_KERNEL);
+ max3191x->undervolt2 = devm_kcalloc(dev, n, sizeof(long), GFP_KERNEL);
+ max3191x->overtemp = devm_kcalloc(dev, n, sizeof(long), GFP_KERNEL);
+ max3191x->fault = devm_kcalloc(dev, n, sizeof(long), GFP_KERNEL);
+ max3191x->xfer.rx_buf = devm_kcalloc(dev, max3191x->nchips,
+ 2, GFP_KERNEL);
+ if (!max3191x->crc_error || !max3191x->undervolt1 ||
+ !max3191x->overtemp || !max3191x->undervolt2 ||
+ !max3191x->fault || !max3191x->xfer.rx_buf)
+ return -ENOMEM;
+
+ max3191x->modesel_pins = devm_gpiod_get_array_optional_count(dev,
+ "maxim,modesel", GPIOD_ASIS, max3191x->nchips);
+ max3191x->fault_pins = devm_gpiod_get_array_optional_count(dev,
+ "maxim,fault", GPIOD_IN, max3191x->nchips);
+ max3191x->db0_pins = devm_gpiod_get_array_optional_count(dev,
+ "maxim,db0", GPIOD_OUT_LOW, max3191x->nchips);
+ max3191x->db1_pins = devm_gpiod_get_array_optional_count(dev,
+ "maxim,db1", GPIOD_OUT_LOW, max3191x->nchips);
+
+ max3191x->mode = device_property_read_bool(dev, "maxim,modesel-8bit")
+ ? STATUS_BYTE_DISABLED : STATUS_BYTE_ENABLED;
+ if (max3191x->modesel_pins)
+ gpiod_set_array_single_value_cansleep(
+ max3191x->modesel_pins->ndescs,
+ max3191x->modesel_pins->desc, max3191x->mode);
+
+ max3191x->ignore_uv = device_property_read_bool(dev,
+ "maxim,ignore-undervoltage");
+
+ if (max3191x->db0_pins && max3191x->db1_pins &&
+ max3191x->db0_pins->ndescs != max3191x->db1_pins->ndescs) {
+ dev_err(dev, "ignoring maxim,db*-gpios: array len mismatch\n");
+ devm_gpiod_put_array(dev, max3191x->db0_pins);
+ devm_gpiod_put_array(dev, max3191x->db1_pins);
+ max3191x->db0_pins = NULL;
+ max3191x->db1_pins = NULL;
+ }
+
+ max3191x->xfer.len = max3191x->nchips * max3191x_wordlen(max3191x);
+ spi_message_init_with_transfers(&max3191x->mesg, &max3191x->xfer, 1);
+
+ max3191x->gpio.label = spi->modalias;
+ max3191x->gpio.owner = THIS_MODULE;
+ max3191x->gpio.parent = dev;
+ max3191x->gpio.base = -1;
+ max3191x->gpio.ngpio = max3191x->nchips * MAX3191X_NGPIO;
+ max3191x->gpio.can_sleep = true;
+
+ max3191x->gpio.get_direction = max3191x_get_direction;
+ max3191x->gpio.direction_input = max3191x_direction_input;
+ max3191x->gpio.direction_output = max3191x_direction_output;
+ max3191x->gpio.set = max3191x_set;
+ max3191x->gpio.set_multiple = max3191x_set_multiple;
+ max3191x->gpio.get = max3191x_get;
+ max3191x->gpio.get_multiple = max3191x_get_multiple;
+ max3191x->gpio.set_config = max3191x_set_config;
+
+ mutex_init(&max3191x->lock);
+
+ ret = gpiochip_add_data(&max3191x->gpio, max3191x);
+ if (ret) {
+ mutex_destroy(&max3191x->lock);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int max3191x_remove(struct spi_device *spi)
+{
+ struct max3191x_chip *max3191x = spi_get_drvdata(spi);
+
+ gpiochip_remove(&max3191x->gpio);
+ mutex_destroy(&max3191x->lock);
+
+ return 0;
+}
+
+static int __init max3191x_register_driver(struct spi_driver *sdrv)
+{
+ crc8_populate_msb(max3191x_crc8, MAX3191X_CRC8_POLYNOMIAL);
+ return spi_register_driver(sdrv);
+}
+
+#ifdef CONFIG_OF
+static const struct of_device_id max3191x_of_id[] = {
+ { .compatible = "maxim,max31910" },
+ { .compatible = "maxim,max31911" },
+ { .compatible = "maxim,max31912" },
+ { .compatible = "maxim,max31913" },
+ { .compatible = "maxim,max31953" },
+ { .compatible = "maxim,max31963" },
+ { }
+};
+MODULE_DEVICE_TABLE(of, max3191x_of_id);
+#endif
+
+static const struct spi_device_id max3191x_spi_id[] = {
+ { "max31910" },
+ { "max31911" },
+ { "max31912" },
+ { "max31913" },
+ { "max31953" },
+ { "max31963" },
+ { }
+};
+MODULE_DEVICE_TABLE(spi, max3191x_spi_id);
+
+static struct spi_driver max3191x_driver = {
+ .driver = {
+ .name = "max3191x",
+ .of_match_table = of_match_ptr(max3191x_of_id),
+ },
+ .probe = max3191x_probe,
+ .remove = max3191x_remove,
+ .id_table = max3191x_spi_id,
+};
+module_driver(max3191x_driver, max3191x_register_driver, spi_unregister_driver);
+
+MODULE_AUTHOR("Lukas Wunner <lukas@wunner.de>");
+MODULE_DESCRIPTION("GPIO driver for Maxim MAX3191x industrial serializer");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/gpio/gpio-max732x.c b/drivers/gpio/gpio-max732x.c
index 7f4d26ce5f23..c04fae1ba32a 100644
--- a/drivers/gpio/gpio-max732x.c
+++ b/drivers/gpio/gpio-max732x.c
@@ -486,7 +486,7 @@ static irqreturn_t max732x_irq_handler(int irq, void *devid)
do {
level = __ffs(pending);
- handle_nested_irq(irq_find_mapping(chip->gpio_chip.irqdomain,
+ handle_nested_irq(irq_find_mapping(chip->gpio_chip.irq.domain,
level));
pending &= ~(1 << level);
diff --git a/drivers/gpio/gpio-mb86s7x.c b/drivers/gpio/gpio-mb86s7x.c
index 94d772677ed6..3134c0d2bfe4 100644
--- a/drivers/gpio/gpio-mb86s7x.c
+++ b/drivers/gpio/gpio-mb86s7x.c
@@ -17,6 +17,7 @@
#include <linux/io.h>
#include <linux/init.h>
#include <linux/clk.h>
+#include <linux/module.h>
#include <linux/err.h>
#include <linux/errno.h>
#include <linux/ioport.h>
@@ -52,11 +53,6 @@ static int mb86s70_gpio_request(struct gpio_chip *gc, unsigned gpio)
spin_lock_irqsave(&gchip->lock, flags);
val = readl(gchip->base + PFR(gpio));
- if (!(val & OFFSET(gpio))) {
- spin_unlock_irqrestore(&gchip->lock, flags);
- return -EINVAL;
- }
-
val &= ~OFFSET(gpio);
writel(val, gchip->base + PFR(gpio));
@@ -209,6 +205,7 @@ static const struct of_device_id mb86s70_gpio_dt_ids[] = {
{ .compatible = "fujitsu,mb86s70-gpio" },
{ /* sentinel */ }
};
+MODULE_DEVICE_TABLE(of, mb86s70_gpio_dt_ids);
static struct platform_driver mb86s70_gpio_driver = {
.driver = {
@@ -218,5 +215,8 @@ static struct platform_driver mb86s70_gpio_driver = {
.probe = mb86s70_gpio_probe,
.remove = mb86s70_gpio_remove,
};
+module_platform_driver(mb86s70_gpio_driver);
-builtin_platform_driver(mb86s70_gpio_driver);
+MODULE_DESCRIPTION("MB86S7x GPIO Driver");
+MODULE_ALIAS("platform:mb86s70-gpio");
+MODULE_LICENSE("GPL");
diff --git a/drivers/gpio/gpio-merrifield.c b/drivers/gpio/gpio-merrifield.c
index ec8560298805..dd67a31ac337 100644
--- a/drivers/gpio/gpio-merrifield.c
+++ b/drivers/gpio/gpio-merrifield.c
@@ -357,7 +357,7 @@ static void mrfld_irq_handler(struct irq_desc *desc)
for_each_set_bit(gpio, &pending, 32) {
unsigned int irq;
- irq = irq_find_mapping(gc->irqdomain, base + gpio);
+ irq = irq_find_mapping(gc->irq.domain, base + gpio);
generic_handle_irq(irq);
}
}
diff --git a/drivers/gpio/gpio-mmio.c b/drivers/gpio/gpio-mmio.c
index f7da40e46c55..f9042bcc27a4 100644
--- a/drivers/gpio/gpio-mmio.c
+++ b/drivers/gpio/gpio-mmio.c
@@ -126,20 +126,16 @@ static unsigned long bgpio_read32be(void __iomem *reg)
return ioread32be(reg);
}
-static unsigned long bgpio_pin2mask(struct gpio_chip *gc, unsigned int pin)
+static unsigned long bgpio_line2mask(struct gpio_chip *gc, unsigned int line)
{
- return BIT(pin);
-}
-
-static unsigned long bgpio_pin2mask_be(struct gpio_chip *gc,
- unsigned int pin)
-{
- return BIT(gc->bgpio_bits - 1 - pin);
+ if (gc->be_bits)
+ return BIT(gc->bgpio_bits - 1 - line);
+ return BIT(line);
}
static int bgpio_get_set(struct gpio_chip *gc, unsigned int gpio)
{
- unsigned long pinmask = gc->pin2mask(gc, gpio);
+ unsigned long pinmask = bgpio_line2mask(gc, gpio);
if (gc->bgpio_dir & pinmask)
return !!(gc->read_reg(gc->reg_set) & pinmask);
@@ -147,9 +143,76 @@ static int bgpio_get_set(struct gpio_chip *gc, unsigned int gpio)
return !!(gc->read_reg(gc->reg_dat) & pinmask);
}
+/*
+ * This assumes that the bits in the GPIO register are in native endianness.
+ * We only assign the function pointer if we have that.
+ */
+static int bgpio_get_set_multiple(struct gpio_chip *gc, unsigned long *mask,
+ unsigned long *bits)
+{
+ unsigned long get_mask = 0;
+ unsigned long set_mask = 0;
+ int bit = 0;
+
+ while ((bit = find_next_bit(mask, gc->ngpio, bit)) != gc->ngpio) {
+ if (gc->bgpio_dir & BIT(bit))
+ set_mask |= BIT(bit);
+ else
+ get_mask |= BIT(bit);
+ }
+
+ if (set_mask)
+ *bits |= gc->read_reg(gc->reg_set) & set_mask;
+ if (get_mask)
+ *bits |= gc->read_reg(gc->reg_dat) & get_mask;
+
+ return 0;
+}
+
static int bgpio_get(struct gpio_chip *gc, unsigned int gpio)
{
- return !!(gc->read_reg(gc->reg_dat) & gc->pin2mask(gc, gpio));
+ return !!(gc->read_reg(gc->reg_dat) & bgpio_line2mask(gc, gpio));
+}
+
+/*
+ * This only works if the bits in the GPIO register are in native endianness.
+ * It is dirt simple and fast in this case. (Also the most common case.)
+ */
+static int bgpio_get_multiple(struct gpio_chip *gc, unsigned long *mask,
+ unsigned long *bits)
+{
+
+ *bits = gc->read_reg(gc->reg_dat) & *mask;
+ return 0;
+}
+
+/*
+ * With big endian mirrored bit order it becomes more tedious.
+ */
+static int bgpio_get_multiple_be(struct gpio_chip *gc, unsigned long *mask,
+ unsigned long *bits)
+{
+ unsigned long readmask = 0;
+ unsigned long val;
+ int bit;
+
+ /* Create a mirrored mask */
+ bit = 0;
+ while ((bit = find_next_bit(mask, gc->ngpio, bit)) != gc->ngpio)
+ readmask |= bgpio_line2mask(gc, bit);
+
+ /* Read the register */
+ val = gc->read_reg(gc->reg_dat) & readmask;
+
+ /*
+ * Mirror the result into the "bits" result, this will give line 0
+ * in bit 0 ... line 31 in bit 31 for a 32bit register.
+ */
+ bit = 0;
+ while ((bit = find_next_bit(&val, gc->ngpio, bit)) != gc->ngpio)
+ *bits |= bgpio_line2mask(gc, bit);
+
+ return 0;
}
static void bgpio_set_none(struct gpio_chip *gc, unsigned int gpio, int val)
@@ -158,7 +221,7 @@ static void bgpio_set_none(struct gpio_chip *gc, unsigned int gpio, int val)
static void bgpio_set(struct gpio_chip *gc, unsigned int gpio, int val)
{
- unsigned long mask = gc->pin2mask(gc, gpio);
+ unsigned long mask = bgpio_line2mask(gc, gpio);
unsigned long flags;
spin_lock_irqsave(&gc->bgpio_lock, flags);
@@ -176,7 +239,7 @@ static void bgpio_set(struct gpio_chip *gc, unsigned int gpio, int val)
static void bgpio_set_with_clear(struct gpio_chip *gc, unsigned int gpio,
int val)
{
- unsigned long mask = gc->pin2mask(gc, gpio);
+ unsigned long mask = bgpio_line2mask(gc, gpio);
if (val)
gc->write_reg(gc->reg_set, mask);
@@ -186,7 +249,7 @@ static void bgpio_set_with_clear(struct gpio_chip *gc, unsigned int gpio,
static void bgpio_set_set(struct gpio_chip *gc, unsigned int gpio, int val)
{
- unsigned long mask = gc->pin2mask(gc, gpio);
+ unsigned long mask = bgpio_line2mask(gc, gpio);
unsigned long flags;
spin_lock_irqsave(&gc->bgpio_lock, flags);
@@ -216,9 +279,9 @@ static void bgpio_multiple_get_masks(struct gpio_chip *gc,
break;
if (__test_and_clear_bit(i, mask)) {
if (test_bit(i, bits))
- *set_mask |= gc->pin2mask(gc, i);
+ *set_mask |= bgpio_line2mask(gc, i);
else
- *clear_mask |= gc->pin2mask(gc, i);
+ *clear_mask |= bgpio_line2mask(gc, i);
}
}
}
@@ -294,7 +357,7 @@ static int bgpio_dir_in(struct gpio_chip *gc, unsigned int gpio)
spin_lock_irqsave(&gc->bgpio_lock, flags);
- gc->bgpio_dir &= ~gc->pin2mask(gc, gpio);
+ gc->bgpio_dir &= ~bgpio_line2mask(gc, gpio);
gc->write_reg(gc->reg_dir, gc->bgpio_dir);
spin_unlock_irqrestore(&gc->bgpio_lock, flags);
@@ -305,7 +368,7 @@ static int bgpio_dir_in(struct gpio_chip *gc, unsigned int gpio)
static int bgpio_get_dir(struct gpio_chip *gc, unsigned int gpio)
{
/* Return 0 if output, 1 of input */
- return !(gc->read_reg(gc->reg_dir) & gc->pin2mask(gc, gpio));
+ return !(gc->read_reg(gc->reg_dir) & bgpio_line2mask(gc, gpio));
}
static int bgpio_dir_out(struct gpio_chip *gc, unsigned int gpio, int val)
@@ -316,7 +379,7 @@ static int bgpio_dir_out(struct gpio_chip *gc, unsigned int gpio, int val)
spin_lock_irqsave(&gc->bgpio_lock, flags);
- gc->bgpio_dir |= gc->pin2mask(gc, gpio);
+ gc->bgpio_dir |= bgpio_line2mask(gc, gpio);
gc->write_reg(gc->reg_dir, gc->bgpio_dir);
spin_unlock_irqrestore(&gc->bgpio_lock, flags);
@@ -330,7 +393,7 @@ static int bgpio_dir_in_inv(struct gpio_chip *gc, unsigned int gpio)
spin_lock_irqsave(&gc->bgpio_lock, flags);
- gc->bgpio_dir |= gc->pin2mask(gc, gpio);
+ gc->bgpio_dir |= bgpio_line2mask(gc, gpio);
gc->write_reg(gc->reg_dir, gc->bgpio_dir);
spin_unlock_irqrestore(&gc->bgpio_lock, flags);
@@ -346,7 +409,7 @@ static int bgpio_dir_out_inv(struct gpio_chip *gc, unsigned int gpio, int val)
spin_lock_irqsave(&gc->bgpio_lock, flags);
- gc->bgpio_dir &= ~gc->pin2mask(gc, gpio);
+ gc->bgpio_dir &= ~bgpio_line2mask(gc, gpio);
gc->write_reg(gc->reg_dir, gc->bgpio_dir);
spin_unlock_irqrestore(&gc->bgpio_lock, flags);
@@ -357,12 +420,11 @@ static int bgpio_dir_out_inv(struct gpio_chip *gc, unsigned int gpio, int val)
static int bgpio_get_dir_inv(struct gpio_chip *gc, unsigned int gpio)
{
/* Return 0 if output, 1 if input */
- return !!(gc->read_reg(gc->reg_dir) & gc->pin2mask(gc, gpio));
+ return !!(gc->read_reg(gc->reg_dir) & bgpio_line2mask(gc, gpio));
}
static int bgpio_setup_accessors(struct device *dev,
struct gpio_chip *gc,
- bool bit_be,
bool byte_be)
{
@@ -406,8 +468,6 @@ static int bgpio_setup_accessors(struct device *dev,
return -EINVAL;
}
- gc->pin2mask = bit_be ? bgpio_pin2mask_be : bgpio_pin2mask;
-
return 0;
}
@@ -462,10 +522,24 @@ static int bgpio_setup_io(struct gpio_chip *gc,
}
if (!(flags & BGPIOF_UNREADABLE_REG_SET) &&
- (flags & BGPIOF_READ_OUTPUT_REG_SET))
+ (flags & BGPIOF_READ_OUTPUT_REG_SET)) {
gc->get = bgpio_get_set;
- else
+ if (!gc->be_bits)
+ gc->get_multiple = bgpio_get_set_multiple;
+ /*
+ * We deliberately avoid assigning the ->get_multiple() call
+ * for big endian mirrored registers which are ALSO reflecting
+ * their value in the set register when used as output. It is
+ * simply too much complexity, let the GPIO core fall back to
+ * reading each line individually in that fringe case.
+ */
+ } else {
gc->get = bgpio_get;
+ if (gc->be_bits)
+ gc->get_multiple = bgpio_get_multiple_be;
+ else
+ gc->get_multiple = bgpio_get_multiple;
+ }
return 0;
}
@@ -526,13 +600,13 @@ int bgpio_init(struct gpio_chip *gc, struct device *dev,
gc->base = -1;
gc->ngpio = gc->bgpio_bits;
gc->request = bgpio_request;
+ gc->be_bits = !!(flags & BGPIOF_BIG_ENDIAN);
ret = bgpio_setup_io(gc, dat, set, clr, flags);
if (ret)
return ret;
- ret = bgpio_setup_accessors(dev, gc, flags & BGPIOF_BIG_ENDIAN,
- flags & BGPIOF_BIG_ENDIAN_BYTE_ORDER);
+ ret = bgpio_setup_accessors(dev, gc, flags & BGPIOF_BIG_ENDIAN_BYTE_ORDER);
if (ret)
return ret;
diff --git a/drivers/gpio/gpio-mpc8xxx.c b/drivers/gpio/gpio-mpc8xxx.c
index 8c93dec498fa..c8673a5d9412 100644
--- a/drivers/gpio/gpio-mpc8xxx.c
+++ b/drivers/gpio/gpio-mpc8xxx.c
@@ -21,6 +21,7 @@
#include <linux/slab.h>
#include <linux/irq.h>
#include <linux/gpio/driver.h>
+#include <linux/bitops.h>
#define MPC8XXX_GPIO_PINS 32
@@ -44,6 +45,16 @@ struct mpc8xxx_gpio_chip {
unsigned int irqn;
};
+/*
+ * This hardware has a big endian bit assignment such that GPIO line 0 is
+ * connected to bit 31, line 1 to bit 30 ... line 31 to bit 0.
+ * This inline helper give the right bitmask for a certain line.
+ */
+static inline u32 mpc_pin2mask(unsigned int offset)
+{
+ return BIT(31 - offset);
+}
+
/* Workaround GPIO 1 errata on MPC8572/MPC8536. The status of GPIOs
* defined as output cannot be determined by reading GPDAT register,
* so we use shadow data register instead. The status of input pins
@@ -59,7 +70,7 @@ static int mpc8572_gpio_get(struct gpio_chip *gc, unsigned int gpio)
val = gc->read_reg(mpc8xxx_gc->regs + GPIO_DAT) & ~out_mask;
out_shadow = gc->bgpio_data & out_mask;
- return !!((val | out_shadow) & gc->pin2mask(gc, gpio));
+ return !!((val | out_shadow) & mpc_pin2mask(gpio));
}
static int mpc5121_gpio_dir_out(struct gpio_chip *gc,
@@ -120,7 +131,7 @@ static void mpc8xxx_irq_unmask(struct irq_data *d)
gc->write_reg(mpc8xxx_gc->regs + GPIO_IMR,
gc->read_reg(mpc8xxx_gc->regs + GPIO_IMR)
- | gc->pin2mask(gc, irqd_to_hwirq(d)));
+ | mpc_pin2mask(irqd_to_hwirq(d)));
raw_spin_unlock_irqrestore(&mpc8xxx_gc->lock, flags);
}
@@ -135,7 +146,7 @@ static void mpc8xxx_irq_mask(struct irq_data *d)
gc->write_reg(mpc8xxx_gc->regs + GPIO_IMR,
gc->read_reg(mpc8xxx_gc->regs + GPIO_IMR)
- & ~(gc->pin2mask(gc, irqd_to_hwirq(d))));
+ & ~mpc_pin2mask(irqd_to_hwirq(d)));
raw_spin_unlock_irqrestore(&mpc8xxx_gc->lock, flags);
}
@@ -146,7 +157,7 @@ static void mpc8xxx_irq_ack(struct irq_data *d)
struct gpio_chip *gc = &mpc8xxx_gc->gc;
gc->write_reg(mpc8xxx_gc->regs + GPIO_IER,
- gc->pin2mask(gc, irqd_to_hwirq(d)));
+ mpc_pin2mask(irqd_to_hwirq(d)));
}
static int mpc8xxx_irq_set_type(struct irq_data *d, unsigned int flow_type)
@@ -160,7 +171,7 @@ static int mpc8xxx_irq_set_type(struct irq_data *d, unsigned int flow_type)
raw_spin_lock_irqsave(&mpc8xxx_gc->lock, flags);
gc->write_reg(mpc8xxx_gc->regs + GPIO_ICR,
gc->read_reg(mpc8xxx_gc->regs + GPIO_ICR)
- | gc->pin2mask(gc, irqd_to_hwirq(d)));
+ | mpc_pin2mask(irqd_to_hwirq(d)));
raw_spin_unlock_irqrestore(&mpc8xxx_gc->lock, flags);
break;
@@ -168,7 +179,7 @@ static int mpc8xxx_irq_set_type(struct irq_data *d, unsigned int flow_type)
raw_spin_lock_irqsave(&mpc8xxx_gc->lock, flags);
gc->write_reg(mpc8xxx_gc->regs + GPIO_ICR,
gc->read_reg(mpc8xxx_gc->regs + GPIO_ICR)
- & ~(gc->pin2mask(gc, irqd_to_hwirq(d))));
+ & ~mpc_pin2mask(irqd_to_hwirq(d)));
raw_spin_unlock_irqrestore(&mpc8xxx_gc->lock, flags);
break;
diff --git a/drivers/gpio/gpio-omap.c b/drivers/gpio/gpio-omap.c
index 3233b72b6828..e136d666f1e5 100644
--- a/drivers/gpio/gpio-omap.c
+++ b/drivers/gpio/gpio-omap.c
@@ -737,7 +737,7 @@ static irqreturn_t omap_gpio_irq_handler(int irq, void *gpiobank)
raw_spin_lock_irqsave(&bank->wa_lock, wa_lock_flags);
- generic_handle_irq(irq_find_mapping(bank->chip.irqdomain,
+ generic_handle_irq(irq_find_mapping(bank->chip.irq.domain,
bit));
raw_spin_unlock_irqrestore(&bank->wa_lock,
diff --git a/drivers/gpio/gpio-pca953x.c b/drivers/gpio/gpio-pca953x.c
index 1b9dbf691ae7..babb7bd2ba59 100644
--- a/drivers/gpio/gpio-pca953x.c
+++ b/drivers/gpio/gpio-pca953x.c
@@ -608,7 +608,7 @@ static irqreturn_t pca953x_irq_handler(int irq, void *devid)
for (i = 0; i < NBANK(chip); i++) {
while (pending[i]) {
level = __ffs(pending[i]);
- handle_nested_irq(irq_find_mapping(chip->gpio_chip.irqdomain,
+ handle_nested_irq(irq_find_mapping(chip->gpio_chip.irq.domain,
level + (BANK_SZ * i)));
pending[i] &= ~(1 << level);
nhandled++;
diff --git a/drivers/gpio/gpio-pcf857x.c b/drivers/gpio/gpio-pcf857x.c
index a4fd78b9c0e4..38fbb420c6cd 100644
--- a/drivers/gpio/gpio-pcf857x.c
+++ b/drivers/gpio/gpio-pcf857x.c
@@ -196,7 +196,7 @@ static irqreturn_t pcf857x_irq(int irq, void *data)
mutex_unlock(&gpio->lock);
for_each_set_bit(i, &change, gpio->chip.ngpio)
- handle_nested_irq(irq_find_mapping(gpio->chip.irqdomain, i));
+ handle_nested_irq(irq_find_mapping(gpio->chip.irq.domain, i));
return IRQ_HANDLED;
}
diff --git a/drivers/gpio/gpio-pci-idio-16.c b/drivers/gpio/gpio-pci-idio-16.c
index 7de4f6a2cb49..57d1b7fbf07b 100644
--- a/drivers/gpio/gpio-pci-idio-16.c
+++ b/drivers/gpio/gpio-pci-idio-16.c
@@ -240,7 +240,7 @@ static irqreturn_t idio_16_irq_handler(int irq, void *dev_id)
return IRQ_NONE;
for_each_set_bit(gpio, &idio16gpio->irq_mask, chip->ngpio)
- generic_handle_irq(irq_find_mapping(chip->irqdomain, gpio));
+ generic_handle_irq(irq_find_mapping(chip->irq.domain, gpio));
raw_spin_lock(&idio16gpio->lock);
diff --git a/drivers/gpio/gpio-pl061.c b/drivers/gpio/gpio-pl061.c
index 6aaaab79c205..b70974cb9ef1 100644
--- a/drivers/gpio/gpio-pl061.c
+++ b/drivers/gpio/gpio-pl061.c
@@ -221,7 +221,7 @@ static void pl061_irq_handler(struct irq_desc *desc)
pending = readb(pl061->base + GPIOMIS);
if (pending) {
for_each_set_bit(offset, &pending, PL061_GPIO_NR)
- generic_handle_irq(irq_find_mapping(gc->irqdomain,
+ generic_handle_irq(irq_find_mapping(gc->irq.domain,
offset));
}
diff --git a/drivers/gpio/gpio-rcar.c b/drivers/gpio/gpio-rcar.c
index 1f0871553fd2..0ea998a3e357 100644
--- a/drivers/gpio/gpio-rcar.c
+++ b/drivers/gpio/gpio-rcar.c
@@ -24,6 +24,7 @@
#include <linux/irq.h>
#include <linux/module.h>
#include <linux/of.h>
+#include <linux/of_device.h>
#include <linux/pinctrl/consumer.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
@@ -206,7 +207,7 @@ static irqreturn_t gpio_rcar_irq_handler(int irq, void *dev_id)
gpio_rcar_read(p, INTMSK))) {
offset = __ffs(pending);
gpio_rcar_write(p, INTCLR, BIT(offset));
- generic_handle_irq(irq_find_mapping(p->gpio_chip.irqdomain,
+ generic_handle_irq(irq_find_mapping(p->gpio_chip.irq.domain,
offset));
irqs_handled++;
}
@@ -393,16 +394,11 @@ MODULE_DEVICE_TABLE(of, gpio_rcar_of_table);
static int gpio_rcar_parse_dt(struct gpio_rcar_priv *p, unsigned int *npins)
{
struct device_node *np = p->pdev->dev.of_node;
- const struct of_device_id *match;
const struct gpio_rcar_info *info;
struct of_phandle_args args;
int ret;
- match = of_match_node(gpio_rcar_of_table, np);
- if (!match)
- return -EINVAL;
-
- info = match->data;
+ info = of_device_get_match_data(&p->pdev->dev);
ret = of_parse_phandle_with_fixed_args(np, "gpio-ranges", 3, 0, &args);
*npins = ret == 0 ? args.args[2] : RCAR_MAX_GPIO_PER_BANK;
@@ -456,19 +452,17 @@ static int gpio_rcar_probe(struct platform_device *pdev)
pm_runtime_enable(dev);
- io = platform_get_resource(pdev, IORESOURCE_MEM, 0);
irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
-
- if (!io || !irq) {
- dev_err(dev, "missing IRQ or IOMEM\n");
+ if (!irq) {
+ dev_err(dev, "missing IRQ\n");
ret = -EINVAL;
goto err0;
}
- p->base = devm_ioremap_nocache(dev, io->start, resource_size(io));
- if (!p->base) {
- dev_err(dev, "failed to remap I/O memory\n");
- ret = -ENXIO;
+ io = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ p->base = devm_ioremap_resource(dev, io);
+ if (IS_ERR(p->base)) {
+ ret = PTR_ERR(p->base);
goto err0;
}
diff --git a/drivers/gpio/gpio-reg.c b/drivers/gpio/gpio-reg.c
index e85903eddc68..23e771dba4c1 100644
--- a/drivers/gpio/gpio-reg.c
+++ b/drivers/gpio/gpio-reg.c
@@ -103,8 +103,8 @@ static int gpio_reg_to_irq(struct gpio_chip *gc, unsigned offset)
struct gpio_reg *r = to_gpio_reg(gc);
int irq = r->irqs[offset];
- if (irq >= 0 && r->irqdomain)
- irq = irq_find_mapping(r->irqdomain, irq);
+ if (irq >= 0 && r->irq.domain)
+ irq = irq_find_mapping(r->irq.domain, irq);
return irq;
}
diff --git a/drivers/gpio/gpio-stmpe.c b/drivers/gpio/gpio-stmpe.c
index 16cbc5702865..e6e5cca624a7 100644
--- a/drivers/gpio/gpio-stmpe.c
+++ b/drivers/gpio/gpio-stmpe.c
@@ -299,7 +299,7 @@ static void stmpe_dbg_show_one(struct seq_file *s,
if (ret < 0)
return;
edge_det = !!(ret & mask);
-
+ /* fall through */
case STMPE1801:
rise_reg = stmpe->regs[STMPE_IDX_GPRER_LSB + bank];
fall_reg = stmpe->regs[STMPE_IDX_GPFER_LSB + bank];
@@ -312,7 +312,7 @@ static void stmpe_dbg_show_one(struct seq_file *s,
if (ret < 0)
return;
fall = !!(ret & mask);
-
+ /* fall through */
case STMPE801:
case STMPE1600:
irqen_reg = stmpe->regs[STMPE_IDX_IEGPIOR_LSB + bank];
@@ -397,7 +397,7 @@ static irqreturn_t stmpe_gpio_irq(int irq, void *dev)
while (stat) {
int bit = __ffs(stat);
int line = bank * 8 + bit;
- int child_irq = irq_find_mapping(stmpe_gpio->chip.irqdomain,
+ int child_irq = irq_find_mapping(stmpe_gpio->chip.irq.domain,
line);
handle_nested_irq(child_irq);
@@ -451,7 +451,7 @@ static int stmpe_gpio_probe(struct platform_device *pdev)
of_property_read_u32(np, "st,norequest-mask",
&stmpe_gpio->norequest_mask);
if (stmpe_gpio->norequest_mask)
- stmpe_gpio->chip.irq_need_valid_mask = true;
+ stmpe_gpio->chip.irq.need_valid_mask = true;
if (irq < 0)
dev_info(&pdev->dev,
@@ -482,7 +482,7 @@ static int stmpe_gpio_probe(struct platform_device *pdev)
/* Forbid unused lines to be mapped as IRQs */
for (i = 0; i < sizeof(u32); i++)
if (stmpe_gpio->norequest_mask & BIT(i))
- clear_bit(i, stmpe_gpio->chip.irq_valid_mask);
+ clear_bit(i, stmpe_gpio->chip.irq.valid_mask);
}
ret = gpiochip_irqchip_add_nested(&stmpe_gpio->chip,
&stmpe_gpio_irq_chip,
diff --git a/drivers/gpio/gpio-tb10x.c b/drivers/gpio/gpio-tb10x.c
index 091ffaaec635..ac6f2a9841e5 100644
--- a/drivers/gpio/gpio-tb10x.c
+++ b/drivers/gpio/gpio-tb10x.c
@@ -193,6 +193,9 @@ static int tb10x_gpio_probe(struct platform_device *pdev)
tb10x_gpio->gc.label =
devm_kasprintf(&pdev->dev, GFP_KERNEL, "%pOF", pdev->dev.of_node);
+ if (!tb10x_gpio->gc.label)
+ return -ENOMEM;
+
tb10x_gpio->gc.parent = &pdev->dev;
tb10x_gpio->gc.owner = THIS_MODULE;
tb10x_gpio->gc.direction_input = tb10x_gpio_direction_in;
diff --git a/drivers/gpio/gpio-tc3589x.c b/drivers/gpio/gpio-tc3589x.c
index 433b45ef332e..91a8ef8e7f3f 100644
--- a/drivers/gpio/gpio-tc3589x.c
+++ b/drivers/gpio/gpio-tc3589x.c
@@ -268,7 +268,7 @@ static irqreturn_t tc3589x_gpio_irq(int irq, void *dev)
while (stat) {
int bit = __ffs(stat);
int line = i * 8 + bit;
- int irq = irq_find_mapping(tc3589x_gpio->chip.irqdomain,
+ int irq = irq_find_mapping(tc3589x_gpio->chip.irq.domain,
line);
handle_nested_irq(irq);
diff --git a/drivers/gpio/gpio-tegra186.c b/drivers/gpio/gpio-tegra186.c
new file mode 100644
index 000000000000..7f1aa4c21e0d
--- /dev/null
+++ b/drivers/gpio/gpio-tegra186.c
@@ -0,0 +1,620 @@
+/*
+ * Copyright (c) 2016-2017 NVIDIA Corporation
+ *
+ * Author: Thierry Reding <treding@nvidia.com>
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ */
+
+#include <linux/gpio/driver.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+
+#include <dt-bindings/gpio/tegra186-gpio.h>
+
+#define TEGRA186_GPIO_ENABLE_CONFIG 0x00
+#define TEGRA186_GPIO_ENABLE_CONFIG_ENABLE BIT(0)
+#define TEGRA186_GPIO_ENABLE_CONFIG_OUT BIT(1)
+#define TEGRA186_GPIO_ENABLE_CONFIG_TRIGGER_TYPE_NONE (0x0 << 2)
+#define TEGRA186_GPIO_ENABLE_CONFIG_TRIGGER_TYPE_LEVEL (0x1 << 2)
+#define TEGRA186_GPIO_ENABLE_CONFIG_TRIGGER_TYPE_SINGLE_EDGE (0x2 << 2)
+#define TEGRA186_GPIO_ENABLE_CONFIG_TRIGGER_TYPE_DOUBLE_EDGE (0x3 << 2)
+#define TEGRA186_GPIO_ENABLE_CONFIG_TRIGGER_TYPE_MASK (0x3 << 2)
+#define TEGRA186_GPIO_ENABLE_CONFIG_TRIGGER_LEVEL BIT(4)
+#define TEGRA186_GPIO_ENABLE_CONFIG_INTERRUPT BIT(6)
+
+#define TEGRA186_GPIO_DEBOUNCE_CONTROL 0x04
+#define TEGRA186_GPIO_DEBOUNCE_CONTROL_THRESHOLD(x) ((x) & 0xff)
+
+#define TEGRA186_GPIO_INPUT 0x08
+#define TEGRA186_GPIO_INPUT_HIGH BIT(0)
+
+#define TEGRA186_GPIO_OUTPUT_CONTROL 0x0c
+#define TEGRA186_GPIO_OUTPUT_CONTROL_FLOATED BIT(0)
+
+#define TEGRA186_GPIO_OUTPUT_VALUE 0x10
+#define TEGRA186_GPIO_OUTPUT_VALUE_HIGH BIT(0)
+
+#define TEGRA186_GPIO_INTERRUPT_CLEAR 0x14
+
+#define TEGRA186_GPIO_INTERRUPT_STATUS(x) (0x100 + (x) * 4)
+
+struct tegra_gpio_port {
+ const char *name;
+ unsigned int offset;
+ unsigned int pins;
+ unsigned int irq;
+};
+
+struct tegra_gpio_soc {
+ const struct tegra_gpio_port *ports;
+ unsigned int num_ports;
+ const char *name;
+};
+
+struct tegra_gpio {
+ struct gpio_chip gpio;
+ struct irq_chip intc;
+ unsigned int num_irq;
+ unsigned int *irq;
+
+ const struct tegra_gpio_soc *soc;
+
+ void __iomem *base;
+};
+
+static const struct tegra_gpio_port *
+tegra186_gpio_get_port(struct tegra_gpio *gpio, unsigned int *pin)
+{
+ unsigned int start = 0, i;
+
+ for (i = 0; i < gpio->soc->num_ports; i++) {
+ const struct tegra_gpio_port *port = &gpio->soc->ports[i];
+
+ if (*pin >= start && *pin < start + port->pins) {
+ *pin -= start;
+ return port;
+ }
+
+ start += port->pins;
+ }
+
+ return NULL;
+}
+
+static void __iomem *tegra186_gpio_get_base(struct tegra_gpio *gpio,
+ unsigned int pin)
+{
+ const struct tegra_gpio_port *port;
+
+ port = tegra186_gpio_get_port(gpio, &pin);
+ if (!port)
+ return NULL;
+
+ return gpio->base + port->offset + pin * 0x20;
+}
+
+static int tegra186_gpio_get_direction(struct gpio_chip *chip,
+ unsigned int offset)
+{
+ struct tegra_gpio *gpio = gpiochip_get_data(chip);
+ void __iomem *base;
+ u32 value;
+
+ base = tegra186_gpio_get_base(gpio, offset);
+ if (WARN_ON(base == NULL))
+ return -ENODEV;
+
+ value = readl(base + TEGRA186_GPIO_ENABLE_CONFIG);
+ if (value & TEGRA186_GPIO_ENABLE_CONFIG_OUT)
+ return 0;
+
+ return 1;
+}
+
+static int tegra186_gpio_direction_input(struct gpio_chip *chip,
+ unsigned int offset)
+{
+ struct tegra_gpio *gpio = gpiochip_get_data(chip);
+ void __iomem *base;
+ u32 value;
+
+ base = tegra186_gpio_get_base(gpio, offset);
+ if (WARN_ON(base == NULL))
+ return -ENODEV;
+
+ value = readl(base + TEGRA186_GPIO_OUTPUT_CONTROL);
+ value |= TEGRA186_GPIO_OUTPUT_CONTROL_FLOATED;
+ writel(value, base + TEGRA186_GPIO_OUTPUT_CONTROL);
+
+ value = readl(base + TEGRA186_GPIO_ENABLE_CONFIG);
+ value |= TEGRA186_GPIO_ENABLE_CONFIG_ENABLE;
+ value &= ~TEGRA186_GPIO_ENABLE_CONFIG_OUT;
+ writel(value, base + TEGRA186_GPIO_ENABLE_CONFIG);
+
+ return 0;
+}
+
+static int tegra186_gpio_direction_output(struct gpio_chip *chip,
+ unsigned int offset, int level)
+{
+ struct tegra_gpio *gpio = gpiochip_get_data(chip);
+ void __iomem *base;
+ u32 value;
+
+ /* configure output level first */
+ chip->set(chip, offset, level);
+
+ base = tegra186_gpio_get_base(gpio, offset);
+ if (WARN_ON(base == NULL))
+ return -EINVAL;
+
+ /* set the direction */
+ value = readl(base + TEGRA186_GPIO_OUTPUT_CONTROL);
+ value &= ~TEGRA186_GPIO_OUTPUT_CONTROL_FLOATED;
+ writel(value, base + TEGRA186_GPIO_OUTPUT_CONTROL);
+
+ value = readl(base + TEGRA186_GPIO_ENABLE_CONFIG);
+ value |= TEGRA186_GPIO_ENABLE_CONFIG_ENABLE;
+ value |= TEGRA186_GPIO_ENABLE_CONFIG_OUT;
+ writel(value, base + TEGRA186_GPIO_ENABLE_CONFIG);
+
+ return 0;
+}
+
+static int tegra186_gpio_get(struct gpio_chip *chip, unsigned int offset)
+{
+ struct tegra_gpio *gpio = gpiochip_get_data(chip);
+ void __iomem *base;
+ u32 value;
+
+ base = tegra186_gpio_get_base(gpio, offset);
+ if (WARN_ON(base == NULL))
+ return -ENODEV;
+
+ value = readl(base + TEGRA186_GPIO_ENABLE_CONFIG);
+ if (value & TEGRA186_GPIO_ENABLE_CONFIG_OUT)
+ value = readl(base + TEGRA186_GPIO_OUTPUT_VALUE);
+ else
+ value = readl(base + TEGRA186_GPIO_INPUT);
+
+ return value & BIT(0);
+}
+
+static void tegra186_gpio_set(struct gpio_chip *chip, unsigned int offset,
+ int level)
+{
+ struct tegra_gpio *gpio = gpiochip_get_data(chip);
+ void __iomem *base;
+ u32 value;
+
+ base = tegra186_gpio_get_base(gpio, offset);
+ if (WARN_ON(base == NULL))
+ return;
+
+ value = readl(base + TEGRA186_GPIO_OUTPUT_VALUE);
+ if (level == 0)
+ value &= ~TEGRA186_GPIO_OUTPUT_VALUE_HIGH;
+ else
+ value |= TEGRA186_GPIO_OUTPUT_VALUE_HIGH;
+
+ writel(value, base + TEGRA186_GPIO_OUTPUT_VALUE);
+}
+
+static int tegra186_gpio_of_xlate(struct gpio_chip *chip,
+ const struct of_phandle_args *spec,
+ u32 *flags)
+{
+ struct tegra_gpio *gpio = gpiochip_get_data(chip);
+ unsigned int port, pin, i, offset = 0;
+
+ if (WARN_ON(chip->of_gpio_n_cells < 2))
+ return -EINVAL;
+
+ if (WARN_ON(spec->args_count < chip->of_gpio_n_cells))
+ return -EINVAL;
+
+ port = spec->args[0] / 8;
+ pin = spec->args[0] % 8;
+
+ if (port >= gpio->soc->num_ports) {
+ dev_err(chip->parent, "invalid port number: %u\n", port);
+ return -EINVAL;
+ }
+
+ for (i = 0; i < port; i++)
+ offset += gpio->soc->ports[i].pins;
+
+ if (flags)
+ *flags = spec->args[1];
+
+ return offset + pin;
+}
+
+static void tegra186_irq_ack(struct irq_data *data)
+{
+ struct tegra_gpio *gpio = irq_data_get_irq_chip_data(data);
+ void __iomem *base;
+
+ base = tegra186_gpio_get_base(gpio, data->hwirq);
+ if (WARN_ON(base == NULL))
+ return;
+
+ writel(1, base + TEGRA186_GPIO_INTERRUPT_CLEAR);
+}
+
+static void tegra186_irq_mask(struct irq_data *data)
+{
+ struct tegra_gpio *gpio = irq_data_get_irq_chip_data(data);
+ void __iomem *base;
+ u32 value;
+
+ base = tegra186_gpio_get_base(gpio, data->hwirq);
+ if (WARN_ON(base == NULL))
+ return;
+
+ value = readl(base + TEGRA186_GPIO_ENABLE_CONFIG);
+ value &= ~TEGRA186_GPIO_ENABLE_CONFIG_INTERRUPT;
+ writel(value, base + TEGRA186_GPIO_ENABLE_CONFIG);
+}
+
+static void tegra186_irq_unmask(struct irq_data *data)
+{
+ struct tegra_gpio *gpio = irq_data_get_irq_chip_data(data);
+ void __iomem *base;
+ u32 value;
+
+ base = tegra186_gpio_get_base(gpio, data->hwirq);
+ if (WARN_ON(base == NULL))
+ return;
+
+ value = readl(base + TEGRA186_GPIO_ENABLE_CONFIG);
+ value |= TEGRA186_GPIO_ENABLE_CONFIG_INTERRUPT;
+ writel(value, base + TEGRA186_GPIO_ENABLE_CONFIG);
+}
+
+static int tegra186_irq_set_type(struct irq_data *data, unsigned int flow)
+{
+ struct tegra_gpio *gpio = irq_data_get_irq_chip_data(data);
+ void __iomem *base;
+ u32 value;
+
+ base = tegra186_gpio_get_base(gpio, data->hwirq);
+ if (WARN_ON(base == NULL))
+ return -ENODEV;
+
+ value = readl(base + TEGRA186_GPIO_ENABLE_CONFIG);
+ value &= ~TEGRA186_GPIO_ENABLE_CONFIG_TRIGGER_TYPE_MASK;
+ value &= ~TEGRA186_GPIO_ENABLE_CONFIG_TRIGGER_LEVEL;
+
+ switch (flow & IRQ_TYPE_SENSE_MASK) {
+ case IRQ_TYPE_NONE:
+ break;
+
+ case IRQ_TYPE_EDGE_RISING:
+ value |= TEGRA186_GPIO_ENABLE_CONFIG_TRIGGER_TYPE_SINGLE_EDGE;
+ value |= TEGRA186_GPIO_ENABLE_CONFIG_TRIGGER_LEVEL;
+ break;
+
+ case IRQ_TYPE_EDGE_FALLING:
+ value |= TEGRA186_GPIO_ENABLE_CONFIG_TRIGGER_TYPE_SINGLE_EDGE;
+ break;
+
+ case IRQ_TYPE_EDGE_BOTH:
+ value |= TEGRA186_GPIO_ENABLE_CONFIG_TRIGGER_TYPE_DOUBLE_EDGE;
+ break;
+
+ case IRQ_TYPE_LEVEL_HIGH:
+ value |= TEGRA186_GPIO_ENABLE_CONFIG_TRIGGER_TYPE_LEVEL;
+ value |= TEGRA186_GPIO_ENABLE_CONFIG_TRIGGER_LEVEL;
+ break;
+
+ case IRQ_TYPE_LEVEL_LOW:
+ value |= TEGRA186_GPIO_ENABLE_CONFIG_TRIGGER_TYPE_LEVEL;
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ writel(value, base + TEGRA186_GPIO_ENABLE_CONFIG);
+
+ if ((flow & IRQ_TYPE_EDGE_BOTH) == 0)
+ irq_set_handler_locked(data, handle_level_irq);
+ else
+ irq_set_handler_locked(data, handle_edge_irq);
+
+ return 0;
+}
+
+static void tegra186_gpio_irq(struct irq_desc *desc)
+{
+ struct tegra_gpio *gpio = irq_desc_get_handler_data(desc);
+ struct irq_domain *domain = gpio->gpio.irq.domain;
+ struct irq_chip *chip = irq_desc_get_chip(desc);
+ unsigned int parent = irq_desc_get_irq(desc);
+ unsigned int i, offset = 0;
+
+ chained_irq_enter(chip, desc);
+
+ for (i = 0; i < gpio->soc->num_ports; i++) {
+ const struct tegra_gpio_port *port = &gpio->soc->ports[i];
+ void __iomem *base = gpio->base + port->offset;
+ unsigned int pin, irq;
+ unsigned long value;
+
+ /* skip ports that are not associated with this controller */
+ if (parent != gpio->irq[port->irq])
+ goto skip;
+
+ value = readl(base + TEGRA186_GPIO_INTERRUPT_STATUS(1));
+
+ for_each_set_bit(pin, &value, port->pins) {
+ irq = irq_find_mapping(domain, offset + pin);
+ if (WARN_ON(irq == 0))
+ continue;
+
+ generic_handle_irq(irq);
+ }
+
+skip:
+ offset += port->pins;
+ }
+
+ chained_irq_exit(chip, desc);
+}
+
+static int tegra186_gpio_irq_domain_xlate(struct irq_domain *domain,
+ struct device_node *np,
+ const u32 *spec, unsigned int size,
+ unsigned long *hwirq,
+ unsigned int *type)
+{
+ struct tegra_gpio *gpio = gpiochip_get_data(domain->host_data);
+ unsigned int port, pin, i, offset = 0;
+
+ if (size < 2)
+ return -EINVAL;
+
+ port = spec[0] / 8;
+ pin = spec[0] % 8;
+
+ if (port >= gpio->soc->num_ports) {
+ dev_err(gpio->gpio.parent, "invalid port number: %u\n", port);
+ return -EINVAL;
+ }
+
+ for (i = 0; i < port; i++)
+ offset += gpio->soc->ports[i].pins;
+
+ *type = spec[1] & IRQ_TYPE_SENSE_MASK;
+ *hwirq = offset + pin;
+
+ return 0;
+}
+
+static const struct irq_domain_ops tegra186_gpio_irq_domain_ops = {
+ .map = gpiochip_irq_map,
+ .unmap = gpiochip_irq_unmap,
+ .xlate = tegra186_gpio_irq_domain_xlate,
+};
+
+static int tegra186_gpio_probe(struct platform_device *pdev)
+{
+ unsigned int i, j, offset;
+ struct gpio_irq_chip *irq;
+ struct tegra_gpio *gpio;
+ struct resource *res;
+ char **names;
+ int err;
+
+ gpio = devm_kzalloc(&pdev->dev, sizeof(*gpio), GFP_KERNEL);
+ if (!gpio)
+ return -ENOMEM;
+
+ gpio->soc = of_device_get_match_data(&pdev->dev);
+
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "gpio");
+ gpio->base = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(gpio->base))
+ return PTR_ERR(gpio->base);
+
+ err = platform_irq_count(pdev);
+ if (err < 0)
+ return err;
+
+ gpio->num_irq = err;
+
+ gpio->irq = devm_kcalloc(&pdev->dev, gpio->num_irq, sizeof(*gpio->irq),
+ GFP_KERNEL);
+ if (!gpio->irq)
+ return -ENOMEM;
+
+ for (i = 0; i < gpio->num_irq; i++) {
+ err = platform_get_irq(pdev, i);
+ if (err < 0)
+ return err;
+
+ gpio->irq[i] = err;
+ }
+
+ gpio->gpio.label = gpio->soc->name;
+ gpio->gpio.parent = &pdev->dev;
+
+ gpio->gpio.get_direction = tegra186_gpio_get_direction;
+ gpio->gpio.direction_input = tegra186_gpio_direction_input;
+ gpio->gpio.direction_output = tegra186_gpio_direction_output;
+ gpio->gpio.get = tegra186_gpio_get,
+ gpio->gpio.set = tegra186_gpio_set;
+
+ gpio->gpio.base = -1;
+
+ for (i = 0; i < gpio->soc->num_ports; i++)
+ gpio->gpio.ngpio += gpio->soc->ports[i].pins;
+
+ names = devm_kcalloc(gpio->gpio.parent, gpio->gpio.ngpio,
+ sizeof(*names), GFP_KERNEL);
+ if (!names)
+ return -ENOMEM;
+
+ for (i = 0, offset = 0; i < gpio->soc->num_ports; i++) {
+ const struct tegra_gpio_port *port = &gpio->soc->ports[i];
+ char *name;
+
+ for (j = 0; j < port->pins; j++) {
+ name = devm_kasprintf(gpio->gpio.parent, GFP_KERNEL,
+ "P%s.%02x", port->name, j);
+ if (!name)
+ return -ENOMEM;
+
+ names[offset + j] = name;
+ }
+
+ offset += port->pins;
+ }
+
+ gpio->gpio.names = (const char * const *)names;
+
+ gpio->gpio.of_node = pdev->dev.of_node;
+ gpio->gpio.of_gpio_n_cells = 2;
+ gpio->gpio.of_xlate = tegra186_gpio_of_xlate;
+
+ gpio->intc.name = pdev->dev.of_node->name;
+ gpio->intc.irq_ack = tegra186_irq_ack;
+ gpio->intc.irq_mask = tegra186_irq_mask;
+ gpio->intc.irq_unmask = tegra186_irq_unmask;
+ gpio->intc.irq_set_type = tegra186_irq_set_type;
+
+ irq = &gpio->gpio.irq;
+ irq->chip = &gpio->intc;
+ irq->domain_ops = &tegra186_gpio_irq_domain_ops;
+ irq->handler = handle_simple_irq;
+ irq->default_type = IRQ_TYPE_NONE;
+ irq->parent_handler = tegra186_gpio_irq;
+ irq->parent_handler_data = gpio;
+ irq->num_parents = gpio->num_irq;
+ irq->parents = gpio->irq;
+
+ irq->map = devm_kcalloc(&pdev->dev, gpio->gpio.ngpio,
+ sizeof(*irq->map), GFP_KERNEL);
+ if (!irq->map)
+ return -ENOMEM;
+
+ for (i = 0, offset = 0; i < gpio->soc->num_ports; i++) {
+ const struct tegra_gpio_port *port = &gpio->soc->ports[i];
+
+ for (j = 0; j < port->pins; j++)
+ irq->map[offset + j] = irq->parents[port->irq];
+
+ offset += port->pins;
+ }
+
+ platform_set_drvdata(pdev, gpio);
+
+ err = devm_gpiochip_add_data(&pdev->dev, &gpio->gpio, gpio);
+ if (err < 0)
+ return err;
+
+ return 0;
+}
+
+static int tegra186_gpio_remove(struct platform_device *pdev)
+{
+ return 0;
+}
+
+#define TEGRA_MAIN_GPIO_PORT(port, base, count, controller) \
+ [TEGRA_MAIN_GPIO_PORT_##port] = { \
+ .name = #port, \
+ .offset = base, \
+ .pins = count, \
+ .irq = controller, \
+ }
+
+static const struct tegra_gpio_port tegra186_main_ports[] = {
+ TEGRA_MAIN_GPIO_PORT( A, 0x2000, 7, 2),
+ TEGRA_MAIN_GPIO_PORT( B, 0x3000, 7, 3),
+ TEGRA_MAIN_GPIO_PORT( C, 0x3200, 7, 3),
+ TEGRA_MAIN_GPIO_PORT( D, 0x3400, 6, 3),
+ TEGRA_MAIN_GPIO_PORT( E, 0x2200, 8, 2),
+ TEGRA_MAIN_GPIO_PORT( F, 0x2400, 6, 2),
+ TEGRA_MAIN_GPIO_PORT( G, 0x4200, 6, 4),
+ TEGRA_MAIN_GPIO_PORT( H, 0x1000, 7, 1),
+ TEGRA_MAIN_GPIO_PORT( I, 0x0800, 8, 0),
+ TEGRA_MAIN_GPIO_PORT( J, 0x5000, 8, 5),
+ TEGRA_MAIN_GPIO_PORT( K, 0x5200, 1, 5),
+ TEGRA_MAIN_GPIO_PORT( L, 0x1200, 8, 1),
+ TEGRA_MAIN_GPIO_PORT( M, 0x5600, 6, 5),
+ TEGRA_MAIN_GPIO_PORT( N, 0x0000, 7, 0),
+ TEGRA_MAIN_GPIO_PORT( O, 0x0200, 4, 0),
+ TEGRA_MAIN_GPIO_PORT( P, 0x4000, 7, 4),
+ TEGRA_MAIN_GPIO_PORT( Q, 0x0400, 6, 0),
+ TEGRA_MAIN_GPIO_PORT( R, 0x0a00, 6, 0),
+ TEGRA_MAIN_GPIO_PORT( T, 0x0600, 4, 0),
+ TEGRA_MAIN_GPIO_PORT( X, 0x1400, 8, 1),
+ TEGRA_MAIN_GPIO_PORT( Y, 0x1600, 7, 1),
+ TEGRA_MAIN_GPIO_PORT(BB, 0x2600, 2, 2),
+ TEGRA_MAIN_GPIO_PORT(CC, 0x5400, 4, 5),
+};
+
+static const struct tegra_gpio_soc tegra186_main_soc = {
+ .num_ports = ARRAY_SIZE(tegra186_main_ports),
+ .ports = tegra186_main_ports,
+ .name = "tegra186-gpio",
+};
+
+#define TEGRA_AON_GPIO_PORT(port, base, count, controller) \
+ [TEGRA_AON_GPIO_PORT_##port] = { \
+ .name = #port, \
+ .offset = base, \
+ .pins = count, \
+ .irq = controller, \
+ }
+
+static const struct tegra_gpio_port tegra186_aon_ports[] = {
+ TEGRA_AON_GPIO_PORT( S, 0x0200, 5, 0),
+ TEGRA_AON_GPIO_PORT( U, 0x0400, 6, 0),
+ TEGRA_AON_GPIO_PORT( V, 0x0800, 8, 0),
+ TEGRA_AON_GPIO_PORT( W, 0x0a00, 8, 0),
+ TEGRA_AON_GPIO_PORT( Z, 0x0e00, 4, 0),
+ TEGRA_AON_GPIO_PORT(AA, 0x0c00, 8, 0),
+ TEGRA_AON_GPIO_PORT(EE, 0x0600, 3, 0),
+ TEGRA_AON_GPIO_PORT(FF, 0x0000, 5, 0),
+};
+
+static const struct tegra_gpio_soc tegra186_aon_soc = {
+ .num_ports = ARRAY_SIZE(tegra186_aon_ports),
+ .ports = tegra186_aon_ports,
+ .name = "tegra186-gpio-aon",
+};
+
+static const struct of_device_id tegra186_gpio_of_match[] = {
+ {
+ .compatible = "nvidia,tegra186-gpio",
+ .data = &tegra186_main_soc
+ }, {
+ .compatible = "nvidia,tegra186-gpio-aon",
+ .data = &tegra186_aon_soc
+ }, {
+ /* sentinel */
+ }
+};
+
+static struct platform_driver tegra186_gpio_driver = {
+ .driver = {
+ .name = "tegra186-gpio",
+ .of_match_table = tegra186_gpio_of_match,
+ },
+ .probe = tegra186_gpio_probe,
+ .remove = tegra186_gpio_remove,
+};
+module_platform_driver(tegra186_gpio_driver);
+
+MODULE_DESCRIPTION("NVIDIA Tegra186 GPIO controller driver");
+MODULE_AUTHOR("Thierry Reding <treding@nvidia.com>");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/gpio/gpio-thunderx.c b/drivers/gpio/gpio-thunderx.c
index 57efb251f9c4..b5adb79a631a 100644
--- a/drivers/gpio/gpio-thunderx.c
+++ b/drivers/gpio/gpio-thunderx.c
@@ -417,18 +417,6 @@ static struct irq_chip thunderx_gpio_irq_chip = {
.flags = IRQCHIP_SET_TYPE_MASKED
};
-static int thunderx_gpio_irq_map(struct irq_domain *d, unsigned int irq,
- irq_hw_number_t hwirq)
-{
- struct thunderx_gpio *txgpio = d->host_data;
-
- if (hwirq >= txgpio->chip.ngpio)
- return -EINVAL;
- if (!thunderx_gpio_is_gpio_nowarn(txgpio, hwirq))
- return -EPERM;
- return 0;
-}
-
static int thunderx_gpio_irq_translate(struct irq_domain *d,
struct irq_fwspec *fwspec,
irq_hw_number_t *hwirq,
@@ -455,7 +443,6 @@ static int thunderx_gpio_irq_alloc(struct irq_domain *d, unsigned int virq,
}
static const struct irq_domain_ops thunderx_gpio_irqd_ops = {
- .map = thunderx_gpio_irq_map,
.alloc = thunderx_gpio_irq_alloc,
.translate = thunderx_gpio_irq_translate
};
diff --git a/drivers/gpio/gpio-uniphier.c b/drivers/gpio/gpio-uniphier.c
new file mode 100644
index 000000000000..016d7427ebfa
--- /dev/null
+++ b/drivers/gpio/gpio-uniphier.c
@@ -0,0 +1,508 @@
+/*
+ * Copyright (C) 2017 Socionext Inc.
+ * Author: Masahiro Yamada <yamada.masahiro@socionext.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/bitops.h>
+#include <linux/gpio/driver.h>
+#include <linux/irq.h>
+#include <linux/irqdomain.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/of_irq.h>
+#include <linux/platform_device.h>
+#include <linux/spinlock.h>
+#include <dt-bindings/gpio/uniphier-gpio.h>
+
+#define UNIPHIER_GPIO_BANK_MASK \
+ GENMASK((UNIPHIER_GPIO_LINES_PER_BANK) - 1, 0)
+
+#define UNIPHIER_GPIO_IRQ_MAX_NUM 24
+
+#define UNIPHIER_GPIO_PORT_DATA 0x0 /* data */
+#define UNIPHIER_GPIO_PORT_DIR 0x4 /* direction (1:in, 0:out) */
+#define UNIPHIER_GPIO_IRQ_EN 0x90 /* irq enable */
+#define UNIPHIER_GPIO_IRQ_MODE 0x94 /* irq mode (1: both edge) */
+#define UNIPHIER_GPIO_IRQ_FLT_EN 0x98 /* noise filter enable */
+#define UNIPHIER_GPIO_IRQ_FLT_CYC 0x9c /* noise filter clock cycle */
+
+struct uniphier_gpio_priv {
+ struct gpio_chip chip;
+ struct irq_chip irq_chip;
+ struct irq_domain *domain;
+ void __iomem *regs;
+ spinlock_t lock;
+ u32 saved_vals[0];
+};
+
+static unsigned int uniphier_gpio_bank_to_reg(unsigned int bank)
+{
+ unsigned int reg;
+
+ reg = (bank + 1) * 8;
+
+ /*
+ * Unfortunately, the GPIO port registers are not contiguous because
+ * offset 0x90-0x9f is used for IRQ. Add 0x10 when crossing the region.
+ */
+ if (reg >= UNIPHIER_GPIO_IRQ_EN)
+ reg += 0x10;
+
+ return reg;
+}
+
+static void uniphier_gpio_get_bank_and_mask(unsigned int offset,
+ unsigned int *bank, u32 *mask)
+{
+ *bank = offset / UNIPHIER_GPIO_LINES_PER_BANK;
+ *mask = BIT(offset % UNIPHIER_GPIO_LINES_PER_BANK);
+}
+
+static void uniphier_gpio_reg_update(struct uniphier_gpio_priv *priv,
+ unsigned int reg, u32 mask, u32 val)
+{
+ unsigned long flags;
+ u32 tmp;
+
+ spin_lock_irqsave(&priv->lock, flags);
+ tmp = readl(priv->regs + reg);
+ tmp &= ~mask;
+ tmp |= mask & val;
+ writel(tmp, priv->regs + reg);
+ spin_unlock_irqrestore(&priv->lock, flags);
+}
+
+static void uniphier_gpio_bank_write(struct gpio_chip *chip, unsigned int bank,
+ unsigned int reg, u32 mask, u32 val)
+{
+ struct uniphier_gpio_priv *priv = gpiochip_get_data(chip);
+
+ if (!mask)
+ return;
+
+ uniphier_gpio_reg_update(priv, uniphier_gpio_bank_to_reg(bank) + reg,
+ mask, val);
+}
+
+static void uniphier_gpio_offset_write(struct gpio_chip *chip,
+ unsigned int offset, unsigned int reg,
+ int val)
+{
+ unsigned int bank;
+ u32 mask;
+
+ uniphier_gpio_get_bank_and_mask(offset, &bank, &mask);
+
+ uniphier_gpio_bank_write(chip, bank, reg, mask, val ? mask : 0);
+}
+
+static int uniphier_gpio_offset_read(struct gpio_chip *chip,
+ unsigned int offset, unsigned int reg)
+{
+ struct uniphier_gpio_priv *priv = gpiochip_get_data(chip);
+ unsigned int bank, reg_offset;
+ u32 mask;
+
+ uniphier_gpio_get_bank_and_mask(offset, &bank, &mask);
+ reg_offset = uniphier_gpio_bank_to_reg(bank) + reg;
+
+ return !!(readl(priv->regs + reg_offset) & mask);
+}
+
+static int uniphier_gpio_get_direction(struct gpio_chip *chip,
+ unsigned int offset)
+{
+ return uniphier_gpio_offset_read(chip, offset, UNIPHIER_GPIO_PORT_DIR);
+}
+
+static int uniphier_gpio_direction_input(struct gpio_chip *chip,
+ unsigned int offset)
+{
+ uniphier_gpio_offset_write(chip, offset, UNIPHIER_GPIO_PORT_DIR, 1);
+
+ return 0;
+}
+
+static int uniphier_gpio_direction_output(struct gpio_chip *chip,
+ unsigned int offset, int val)
+{
+ uniphier_gpio_offset_write(chip, offset, UNIPHIER_GPIO_PORT_DATA, val);
+ uniphier_gpio_offset_write(chip, offset, UNIPHIER_GPIO_PORT_DIR, 0);
+
+ return 0;
+}
+
+static int uniphier_gpio_get(struct gpio_chip *chip, unsigned int offset)
+{
+ return uniphier_gpio_offset_read(chip, offset, UNIPHIER_GPIO_PORT_DATA);
+}
+
+static void uniphier_gpio_set(struct gpio_chip *chip,
+ unsigned int offset, int val)
+{
+ uniphier_gpio_offset_write(chip, offset, UNIPHIER_GPIO_PORT_DATA, val);
+}
+
+static void uniphier_gpio_set_multiple(struct gpio_chip *chip,
+ unsigned long *mask, unsigned long *bits)
+{
+ unsigned int bank, shift, bank_mask, bank_bits;
+ int i;
+
+ for (i = 0; i < chip->ngpio; i += UNIPHIER_GPIO_LINES_PER_BANK) {
+ bank = i / UNIPHIER_GPIO_LINES_PER_BANK;
+ shift = i % BITS_PER_LONG;
+ bank_mask = (mask[BIT_WORD(i)] >> shift) &
+ UNIPHIER_GPIO_BANK_MASK;
+ bank_bits = bits[BIT_WORD(i)] >> shift;
+
+ uniphier_gpio_bank_write(chip, bank, UNIPHIER_GPIO_PORT_DATA,
+ bank_mask, bank_bits);
+ }
+}
+
+static int uniphier_gpio_to_irq(struct gpio_chip *chip, unsigned int offset)
+{
+ struct irq_fwspec fwspec;
+
+ if (offset < UNIPHIER_GPIO_IRQ_OFFSET)
+ return -ENXIO;
+
+ fwspec.fwnode = of_node_to_fwnode(chip->parent->of_node);
+ fwspec.param_count = 2;
+ fwspec.param[0] = offset - UNIPHIER_GPIO_IRQ_OFFSET;
+ fwspec.param[1] = IRQ_TYPE_NONE;
+
+ return irq_create_fwspec_mapping(&fwspec);
+}
+
+static void uniphier_gpio_irq_mask(struct irq_data *data)
+{
+ struct uniphier_gpio_priv *priv = data->chip_data;
+ u32 mask = BIT(data->hwirq);
+
+ uniphier_gpio_reg_update(priv, UNIPHIER_GPIO_IRQ_EN, mask, 0);
+
+ return irq_chip_mask_parent(data);
+}
+
+static void uniphier_gpio_irq_unmask(struct irq_data *data)
+{
+ struct uniphier_gpio_priv *priv = data->chip_data;
+ u32 mask = BIT(data->hwirq);
+
+ uniphier_gpio_reg_update(priv, UNIPHIER_GPIO_IRQ_EN, mask, mask);
+
+ return irq_chip_unmask_parent(data);
+}
+
+static int uniphier_gpio_irq_set_type(struct irq_data *data, unsigned int type)
+{
+ struct uniphier_gpio_priv *priv = data->chip_data;
+ u32 mask = BIT(data->hwirq);
+ u32 val = 0;
+
+ if (type == IRQ_TYPE_EDGE_BOTH) {
+ val = mask;
+ type = IRQ_TYPE_EDGE_FALLING;
+ }
+
+ uniphier_gpio_reg_update(priv, UNIPHIER_GPIO_IRQ_MODE, mask, val);
+ /* To enable both edge detection, the noise filter must be enabled. */
+ uniphier_gpio_reg_update(priv, UNIPHIER_GPIO_IRQ_FLT_EN, mask, val);
+
+ return irq_chip_set_type_parent(data, type);
+}
+
+static int uniphier_gpio_irq_get_parent_hwirq(struct uniphier_gpio_priv *priv,
+ unsigned int hwirq)
+{
+ struct device_node *np = priv->chip.parent->of_node;
+ const __be32 *range;
+ u32 base, parent_base, size;
+ int len;
+
+ range = of_get_property(np, "socionext,interrupt-ranges", &len);
+ if (!range)
+ return -EINVAL;
+
+ len /= sizeof(*range);
+
+ for (; len >= 3; len -= 3) {
+ base = be32_to_cpu(*range++);
+ parent_base = be32_to_cpu(*range++);
+ size = be32_to_cpu(*range++);
+
+ if (base <= hwirq && hwirq < base + size)
+ return hwirq - base + parent_base;
+ }
+
+ return -ENOENT;
+}
+
+static int uniphier_gpio_irq_domain_translate(struct irq_domain *domain,
+ struct irq_fwspec *fwspec,
+ unsigned long *out_hwirq,
+ unsigned int *out_type)
+{
+ if (WARN_ON(fwspec->param_count < 2))
+ return -EINVAL;
+
+ *out_hwirq = fwspec->param[0];
+ *out_type = fwspec->param[1] & IRQ_TYPE_SENSE_MASK;
+
+ return 0;
+}
+
+static int uniphier_gpio_irq_domain_alloc(struct irq_domain *domain,
+ unsigned int virq,
+ unsigned int nr_irqs, void *arg)
+{
+ struct uniphier_gpio_priv *priv = domain->host_data;
+ struct irq_fwspec parent_fwspec;
+ irq_hw_number_t hwirq;
+ unsigned int type;
+ int ret;
+
+ if (WARN_ON(nr_irqs != 1))
+ return -EINVAL;
+
+ ret = uniphier_gpio_irq_domain_translate(domain, arg, &hwirq, &type);
+ if (ret)
+ return ret;
+
+ ret = uniphier_gpio_irq_get_parent_hwirq(priv, hwirq);
+ if (ret < 0)
+ return ret;
+
+ /* parent is UniPhier AIDET */
+ parent_fwspec.fwnode = domain->parent->fwnode;
+ parent_fwspec.param_count = 2;
+ parent_fwspec.param[0] = ret;
+ parent_fwspec.param[1] = (type == IRQ_TYPE_EDGE_BOTH) ?
+ IRQ_TYPE_EDGE_FALLING : type;
+
+ ret = irq_domain_set_hwirq_and_chip(domain, virq, hwirq,
+ &priv->irq_chip, priv);
+ if (ret)
+ return ret;
+
+ return irq_domain_alloc_irqs_parent(domain, virq, 1, &parent_fwspec);
+}
+
+static int uniphier_gpio_irq_domain_activate(struct irq_domain *domain,
+ struct irq_data *data, bool early)
+{
+ struct uniphier_gpio_priv *priv = domain->host_data;
+ struct gpio_chip *chip = &priv->chip;
+
+ gpiochip_lock_as_irq(chip, data->hwirq + UNIPHIER_GPIO_IRQ_OFFSET);
+ return 0;
+}
+
+static void uniphier_gpio_irq_domain_deactivate(struct irq_domain *domain,
+ struct irq_data *data)
+{
+ struct uniphier_gpio_priv *priv = domain->host_data;
+ struct gpio_chip *chip = &priv->chip;
+
+ gpiochip_unlock_as_irq(chip, data->hwirq + UNIPHIER_GPIO_IRQ_OFFSET);
+}
+
+static const struct irq_domain_ops uniphier_gpio_irq_domain_ops = {
+ .alloc = uniphier_gpio_irq_domain_alloc,
+ .free = irq_domain_free_irqs_common,
+ .activate = uniphier_gpio_irq_domain_activate,
+ .deactivate = uniphier_gpio_irq_domain_deactivate,
+ .translate = uniphier_gpio_irq_domain_translate,
+};
+
+static void uniphier_gpio_hw_init(struct uniphier_gpio_priv *priv)
+{
+ /*
+ * Due to the hardware design, the noise filter must be enabled to
+ * detect both edge interrupts. This filter is intended to remove the
+ * noise from the irq lines. It does not work for GPIO input, so GPIO
+ * debounce is not supported. Unfortunately, the filter period is
+ * shared among all irq lines. Just choose a sensible period here.
+ */
+ writel(0xff, priv->regs + UNIPHIER_GPIO_IRQ_FLT_CYC);
+}
+
+static unsigned int uniphier_gpio_get_nbanks(unsigned int ngpio)
+{
+ return DIV_ROUND_UP(ngpio, UNIPHIER_GPIO_LINES_PER_BANK);
+}
+
+static int uniphier_gpio_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct device_node *parent_np;
+ struct irq_domain *parent_domain;
+ struct uniphier_gpio_priv *priv;
+ struct gpio_chip *chip;
+ struct irq_chip *irq_chip;
+ struct resource *regs;
+ unsigned int nregs;
+ u32 ngpios;
+ int ret;
+
+ parent_np = of_irq_find_parent(dev->of_node);
+ if (!parent_np)
+ return -ENXIO;
+
+ parent_domain = irq_find_host(parent_np);
+ of_node_put(parent_np);
+ if (!parent_domain)
+ return -EPROBE_DEFER;
+
+ ret = of_property_read_u32(dev->of_node, "ngpios", &ngpios);
+ if (ret)
+ return ret;
+
+ nregs = uniphier_gpio_get_nbanks(ngpios) * 2 + 3;
+ priv = devm_kzalloc(dev,
+ sizeof(*priv) + sizeof(priv->saved_vals[0]) * nregs,
+ GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ priv->regs = devm_ioremap_resource(dev, regs);
+ if (IS_ERR(priv->regs))
+ return PTR_ERR(priv->regs);
+
+ spin_lock_init(&priv->lock);
+
+ chip = &priv->chip;
+ chip->label = dev_name(dev);
+ chip->parent = dev;
+ chip->request = gpiochip_generic_request;
+ chip->free = gpiochip_generic_free;
+ chip->get_direction = uniphier_gpio_get_direction;
+ chip->direction_input = uniphier_gpio_direction_input;
+ chip->direction_output = uniphier_gpio_direction_output;
+ chip->get = uniphier_gpio_get;
+ chip->set = uniphier_gpio_set;
+ chip->set_multiple = uniphier_gpio_set_multiple;
+ chip->to_irq = uniphier_gpio_to_irq;
+ chip->base = -1;
+ chip->ngpio = ngpios;
+
+ irq_chip = &priv->irq_chip;
+ irq_chip->name = dev_name(dev);
+ irq_chip->irq_mask = uniphier_gpio_irq_mask;
+ irq_chip->irq_unmask = uniphier_gpio_irq_unmask;
+ irq_chip->irq_eoi = irq_chip_eoi_parent;
+ irq_chip->irq_set_affinity = irq_chip_set_affinity_parent;
+ irq_chip->irq_set_type = uniphier_gpio_irq_set_type;
+
+ uniphier_gpio_hw_init(priv);
+
+ ret = devm_gpiochip_add_data(dev, chip, priv);
+ if (ret)
+ return ret;
+
+ priv->domain = irq_domain_create_hierarchy(
+ parent_domain, 0,
+ UNIPHIER_GPIO_IRQ_MAX_NUM,
+ of_node_to_fwnode(dev->of_node),
+ &uniphier_gpio_irq_domain_ops, priv);
+ if (!priv->domain)
+ return -ENOMEM;
+
+ platform_set_drvdata(pdev, priv);
+
+ return 0;
+}
+
+static int uniphier_gpio_remove(struct platform_device *pdev)
+{
+ struct uniphier_gpio_priv *priv = platform_get_drvdata(pdev);
+
+ irq_domain_remove(priv->domain);
+
+ return 0;
+}
+
+static int __maybe_unused uniphier_gpio_suspend(struct device *dev)
+{
+ struct uniphier_gpio_priv *priv = dev_get_drvdata(dev);
+ unsigned int nbanks = uniphier_gpio_get_nbanks(priv->chip.ngpio);
+ u32 *val = priv->saved_vals;
+ unsigned int reg;
+ int i;
+
+ for (i = 0; i < nbanks; i++) {
+ reg = uniphier_gpio_bank_to_reg(i);
+
+ *val++ = readl(priv->regs + reg + UNIPHIER_GPIO_PORT_DATA);
+ *val++ = readl(priv->regs + reg + UNIPHIER_GPIO_PORT_DIR);
+ }
+
+ *val++ = readl(priv->regs + UNIPHIER_GPIO_IRQ_EN);
+ *val++ = readl(priv->regs + UNIPHIER_GPIO_IRQ_MODE);
+ *val++ = readl(priv->regs + UNIPHIER_GPIO_IRQ_FLT_EN);
+
+ return 0;
+}
+
+static int __maybe_unused uniphier_gpio_resume(struct device *dev)
+{
+ struct uniphier_gpio_priv *priv = dev_get_drvdata(dev);
+ unsigned int nbanks = uniphier_gpio_get_nbanks(priv->chip.ngpio);
+ const u32 *val = priv->saved_vals;
+ unsigned int reg;
+ int i;
+
+ for (i = 0; i < nbanks; i++) {
+ reg = uniphier_gpio_bank_to_reg(i);
+
+ writel(*val++, priv->regs + reg + UNIPHIER_GPIO_PORT_DATA);
+ writel(*val++, priv->regs + reg + UNIPHIER_GPIO_PORT_DIR);
+ }
+
+ writel(*val++, priv->regs + UNIPHIER_GPIO_IRQ_EN);
+ writel(*val++, priv->regs + UNIPHIER_GPIO_IRQ_MODE);
+ writel(*val++, priv->regs + UNIPHIER_GPIO_IRQ_FLT_EN);
+
+ uniphier_gpio_hw_init(priv);
+
+ return 0;
+}
+
+static const struct dev_pm_ops uniphier_gpio_pm_ops = {
+ SET_LATE_SYSTEM_SLEEP_PM_OPS(uniphier_gpio_suspend,
+ uniphier_gpio_resume)
+};
+
+static const struct of_device_id uniphier_gpio_match[] = {
+ { .compatible = "socionext,uniphier-gpio" },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, uniphier_gpio_match);
+
+static struct platform_driver uniphier_gpio_driver = {
+ .probe = uniphier_gpio_probe,
+ .remove = uniphier_gpio_remove,
+ .driver = {
+ .name = "uniphier-gpio",
+ .of_match_table = uniphier_gpio_match,
+ .pm = &uniphier_gpio_pm_ops,
+ },
+};
+module_platform_driver(uniphier_gpio_driver);
+
+MODULE_AUTHOR("Masahiro Yamada <yamada.masahiro@socionext.com>");
+MODULE_DESCRIPTION("UniPhier GPIO driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/gpio/gpio-vf610.c b/drivers/gpio/gpio-vf610.c
index cbe9e06861de..4610cc2938ad 100644
--- a/drivers/gpio/gpio-vf610.c
+++ b/drivers/gpio/gpio-vf610.c
@@ -160,7 +160,7 @@ static void vf610_gpio_irq_handler(struct irq_desc *desc)
for_each_set_bit(pin, &irq_isfr, VF610_GPIO_PER_PORT) {
vf610_gpio_writel(BIT(pin), port->base + PORT_ISFR);
- generic_handle_irq(irq_find_mapping(port->gc.irqdomain, pin));
+ generic_handle_irq(irq_find_mapping(port->gc.irq.domain, pin));
}
chained_irq_exit(chip, desc);
diff --git a/drivers/gpio/gpio-wcove.c b/drivers/gpio/gpio-wcove.c
index 85341eab795d..dde7c6aecbb5 100644
--- a/drivers/gpio/gpio-wcove.c
+++ b/drivers/gpio/gpio-wcove.c
@@ -350,7 +350,7 @@ static irqreturn_t wcove_gpio_irq_handler(int irq, void *data)
offset = (gpio > GROUP0_NR_IRQS) ? 1 : 0;
mask = (offset == 1) ? BIT(gpio - GROUP0_NR_IRQS) :
BIT(gpio);
- virq = irq_find_mapping(wg->chip.irqdomain, gpio);
+ virq = irq_find_mapping(wg->chip.irq.domain, gpio);
handle_nested_irq(virq);
regmap_update_bits(wg->regmap, IRQ_STATUS_BASE + offset,
mask, mask);
diff --git a/drivers/gpio/gpio-ws16c48.c b/drivers/gpio/gpio-ws16c48.c
index 5037974ac063..746648244bf3 100644
--- a/drivers/gpio/gpio-ws16c48.c
+++ b/drivers/gpio/gpio-ws16c48.c
@@ -332,7 +332,7 @@ static irqreturn_t ws16c48_irq_handler(int irq, void *dev_id)
int_id = inb(ws16c48gpio->base + 8 + port);
for_each_set_bit(gpio, &int_id, 8)
generic_handle_irq(irq_find_mapping(
- chip->irqdomain, gpio + 8*port));
+ chip->irq.domain, gpio + 8*port));
}
int_pending = inb(ws16c48gpio->base + 6) & 0x7;
diff --git a/drivers/gpio/gpio-xgene-sb.c b/drivers/gpio/gpio-xgene-sb.c
index b5843fe6a44d..2313af82fad3 100644
--- a/drivers/gpio/gpio-xgene-sb.c
+++ b/drivers/gpio/gpio-xgene-sb.c
@@ -130,10 +130,7 @@ static int xgene_gpio_sb_to_irq(struct gpio_chip *gc, u32 gpio)
(gpio > HWIRQ_TO_GPIO(priv, priv->nirq)))
return -ENXIO;
- if (gc->parent->of_node)
- fwspec.fwnode = of_node_to_fwnode(gc->parent->of_node);
- else
- fwspec.fwnode = gc->parent->fwnode;
+ fwspec.fwnode = gc->parent->fwnode;
fwspec.param_count = 2;
fwspec.param[0] = GPIO_TO_HWIRQ(priv, gpio);
fwspec.param[1] = IRQ_TYPE_NONE;
@@ -233,7 +230,6 @@ static int xgene_gpio_sb_probe(struct platform_device *pdev)
struct resource *res;
void __iomem *regs;
struct irq_domain *parent_domain = NULL;
- struct fwnode_handle *fwnode;
u32 val32;
priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
@@ -287,18 +283,13 @@ static int xgene_gpio_sb_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, priv);
- if (pdev->dev.of_node)
- fwnode = of_node_to_fwnode(pdev->dev.of_node);
- else
- fwnode = pdev->dev.fwnode;
-
priv->irq_domain = irq_domain_create_hierarchy(parent_domain,
- 0, priv->nirq, fwnode,
+ 0, priv->nirq, pdev->dev.fwnode,
&xgene_gpio_sb_domain_ops, priv);
if (!priv->irq_domain)
return -ENODEV;
- priv->gc.irqdomain = priv->irq_domain;
+ priv->gc.irq.domain = priv->irq_domain;
ret = devm_gpiochip_add_data(&pdev->dev, &priv->gc, priv);
if (ret) {
diff --git a/drivers/gpio/gpio-xlp.c b/drivers/gpio/gpio-xlp.c
index d857e1d8e731..e74bd43a6974 100644
--- a/drivers/gpio/gpio-xlp.c
+++ b/drivers/gpio/gpio-xlp.c
@@ -225,7 +225,7 @@ static void xlp_gpio_generic_handler(struct irq_desc *desc)
if (gpio_stat & BIT(gpio % XLP_GPIO_REGSZ))
generic_handle_irq(irq_find_mapping(
- priv->chip.irqdomain, gpio));
+ priv->chip.irq.domain, gpio));
}
chained_irq_exit(irqchip, desc);
}
diff --git a/drivers/gpio/gpio-zx.c b/drivers/gpio/gpio-zx.c
index be3a87da8438..5eacad9b2692 100644
--- a/drivers/gpio/gpio-zx.c
+++ b/drivers/gpio/gpio-zx.c
@@ -170,7 +170,7 @@ static void zx_irq_handler(struct irq_desc *desc)
writew_relaxed(pending, chip->base + ZX_GPIO_IC);
if (pending) {
for_each_set_bit(offset, &pending, ZX_GPIO_NR)
- generic_handle_irq(irq_find_mapping(gc->irqdomain,
+ generic_handle_irq(irq_find_mapping(gc->irq.domain,
offset));
}
diff --git a/drivers/gpio/gpio-zynq.c b/drivers/gpio/gpio-zynq.c
index b3cc948a2d8b..75ee877e5cd5 100644
--- a/drivers/gpio/gpio-zynq.c
+++ b/drivers/gpio/gpio-zynq.c
@@ -562,7 +562,7 @@ static void zynq_gpio_handle_bank_irq(struct zynq_gpio *gpio,
unsigned long pending)
{
unsigned int bank_offset = gpio->p_data->bank_min[bank_num];
- struct irq_domain *irqdomain = gpio->chip.irqdomain;
+ struct irq_domain *irqdomain = gpio->chip.irq.domain;
int offset;
if (!pending)
diff --git a/drivers/gpio/gpiolib-of.c b/drivers/gpio/gpiolib-of.c
index bfcd20699ec8..e0d59e61b52f 100644
--- a/drivers/gpio/gpiolib-of.c
+++ b/drivers/gpio/gpiolib-of.c
@@ -153,8 +153,8 @@ struct gpio_desc *of_find_gpio(struct device *dev, const char *con_id,
*flags |= GPIO_OPEN_SOURCE;
}
- if (of_flags & OF_GPIO_SLEEP_MAY_LOOSE_VALUE)
- *flags |= GPIO_SLEEP_MAY_LOOSE_VALUE;
+ if (of_flags & OF_GPIO_SLEEP_MAY_LOSE_VALUE)
+ *flags |= GPIO_SLEEP_MAY_LOSE_VALUE;
return desc;
}
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index eb80dac4e26a..86dcd02cf602 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -72,6 +72,8 @@ static LIST_HEAD(gpio_lookup_list);
LIST_HEAD(gpio_devices);
static void gpiochip_free_hogs(struct gpio_chip *chip);
+static int gpiochip_add_irqchip(struct gpio_chip *gpiochip,
+ struct lock_class_key *key);
static void gpiochip_irqchip_remove(struct gpio_chip *gpiochip);
static int gpiochip_irqchip_init_valid_mask(struct gpio_chip *gpiochip);
static void gpiochip_irqchip_free_valid_mask(struct gpio_chip *gpiochip);
@@ -365,28 +367,28 @@ static long linehandle_ioctl(struct file *filep, unsigned int cmd,
struct linehandle_state *lh = filep->private_data;
void __user *ip = (void __user *)arg;
struct gpiohandle_data ghd;
+ int vals[GPIOHANDLES_MAX];
int i;
if (cmd == GPIOHANDLE_GET_LINE_VALUES_IOCTL) {
- int val;
+ /* TODO: check if descriptors are really input */
+ int ret = gpiod_get_array_value_complex(false,
+ true,
+ lh->numdescs,
+ lh->descs,
+ vals);
+ if (ret)
+ return ret;
memset(&ghd, 0, sizeof(ghd));
-
- /* TODO: check if descriptors are really input */
- for (i = 0; i < lh->numdescs; i++) {
- val = gpiod_get_value_cansleep(lh->descs[i]);
- if (val < 0)
- return val;
- ghd.values[i] = val;
- }
+ for (i = 0; i < lh->numdescs; i++)
+ ghd.values[i] = vals[i];
if (copy_to_user(ip, &ghd, sizeof(ghd)))
return -EFAULT;
return 0;
} else if (cmd == GPIOHANDLE_SET_LINE_VALUES_IOCTL) {
- int vals[GPIOHANDLES_MAX];
-
/* TODO: check if descriptors are really output */
if (copy_from_user(&ghd, ip, sizeof(ghd)))
return -EFAULT;
@@ -444,12 +446,25 @@ static int linehandle_create(struct gpio_device *gdev, void __user *ip)
struct linehandle_state *lh;
struct file *file;
int fd, i, ret;
+ u32 lflags;
if (copy_from_user(&handlereq, ip, sizeof(handlereq)))
return -EFAULT;
if ((handlereq.lines == 0) || (handlereq.lines > GPIOHANDLES_MAX))
return -EINVAL;
+ lflags = handlereq.flags;
+
+ /* Return an error if an unknown flag is set */
+ if (lflags & ~GPIOHANDLE_REQUEST_VALID_FLAGS)
+ return -EINVAL;
+
+ /* OPEN_DRAIN and OPEN_SOURCE flags only make sense for output mode. */
+ if (!(lflags & GPIOHANDLE_REQUEST_OUTPUT) &&
+ ((lflags & GPIOHANDLE_REQUEST_OPEN_DRAIN) ||
+ (lflags & GPIOHANDLE_REQUEST_OPEN_SOURCE)))
+ return -EINVAL;
+
lh = kzalloc(sizeof(*lh), GFP_KERNEL);
if (!lh)
return -ENOMEM;
@@ -470,7 +485,6 @@ static int linehandle_create(struct gpio_device *gdev, void __user *ip)
/* Request each GPIO */
for (i = 0; i < handlereq.lines; i++) {
u32 offset = handlereq.lineoffsets[i];
- u32 lflags = handlereq.flags;
struct gpio_desc *desc;
if (offset >= gdev->ngpio) {
@@ -478,12 +492,6 @@ static int linehandle_create(struct gpio_device *gdev, void __user *ip)
goto out_free_descs;
}
- /* Return an error if a unknown flag is set */
- if (lflags & ~GPIOHANDLE_REQUEST_VALID_FLAGS) {
- ret = -EINVAL;
- goto out_free_descs;
- }
-
desc = &gdev->descs[offset];
ret = gpiod_request(desc, lh->label);
if (ret)
@@ -1091,30 +1099,8 @@ static void gpiochip_setup_devs(void)
}
}
-/**
- * gpiochip_add_data() - register a gpio_chip
- * @chip: the chip to register, with chip->base initialized
- * @data: driver-private data associated with this chip
- *
- * Context: potentially before irqs will work
- *
- * When gpiochip_add_data() is called very early during boot, so that GPIOs
- * can be freely used, the chip->parent device must be registered before
- * the gpio framework's arch_initcall(). Otherwise sysfs initialization
- * for GPIOs will fail rudely.
- *
- * gpiochip_add_data() must only be called after gpiolib initialization,
- * ie after core_initcall().
- *
- * If chip->base is negative, this requests dynamic assignment of
- * a range of valid GPIOs.
- *
- * Returns:
- * A negative errno if the chip can't be registered, such as because the
- * chip->base is invalid or already associated with a different chip.
- * Otherwise it returns zero as a success code.
- */
-int gpiochip_add_data(struct gpio_chip *chip, void *data)
+int gpiochip_add_data_with_key(struct gpio_chip *chip, void *data,
+ struct lock_class_key *key)
{
unsigned long flags;
int status = 0;
@@ -1260,6 +1246,10 @@ int gpiochip_add_data(struct gpio_chip *chip, void *data)
if (status)
goto err_remove_from_list;
+ status = gpiochip_add_irqchip(chip, key);
+ if (status)
+ goto err_remove_chip;
+
status = of_gpiochip_add(chip);
if (status)
goto err_remove_chip;
@@ -1303,7 +1293,7 @@ err_free_gdev:
kfree(gdev);
return status;
}
-EXPORT_SYMBOL_GPL(gpiochip_add_data);
+EXPORT_SYMBOL_GPL(gpiochip_add_data_with_key);
/**
* gpiochip_get_data() - get per-subdriver data for the chip
@@ -1498,33 +1488,33 @@ static struct gpio_chip *find_chip_by_name(const char *name)
static int gpiochip_irqchip_init_valid_mask(struct gpio_chip *gpiochip)
{
- if (!gpiochip->irq_need_valid_mask)
+ if (!gpiochip->irq.need_valid_mask)
return 0;
- gpiochip->irq_valid_mask = kcalloc(BITS_TO_LONGS(gpiochip->ngpio),
+ gpiochip->irq.valid_mask = kcalloc(BITS_TO_LONGS(gpiochip->ngpio),
sizeof(long), GFP_KERNEL);
- if (!gpiochip->irq_valid_mask)
+ if (!gpiochip->irq.valid_mask)
return -ENOMEM;
/* Assume by default all GPIOs are valid */
- bitmap_fill(gpiochip->irq_valid_mask, gpiochip->ngpio);
+ bitmap_fill(gpiochip->irq.valid_mask, gpiochip->ngpio);
return 0;
}
static void gpiochip_irqchip_free_valid_mask(struct gpio_chip *gpiochip)
{
- kfree(gpiochip->irq_valid_mask);
- gpiochip->irq_valid_mask = NULL;
+ kfree(gpiochip->irq.valid_mask);
+ gpiochip->irq.valid_mask = NULL;
}
static bool gpiochip_irqchip_irq_valid(const struct gpio_chip *gpiochip,
unsigned int offset)
{
/* No mask means all valid */
- if (likely(!gpiochip->irq_valid_mask))
+ if (likely(!gpiochip->irq.valid_mask))
return true;
- return test_bit(offset, gpiochip->irq_valid_mask);
+ return test_bit(offset, gpiochip->irq.valid_mask);
}
/**
@@ -1544,7 +1534,7 @@ static void gpiochip_set_cascaded_irqchip(struct gpio_chip *gpiochip,
{
unsigned int offset;
- if (!gpiochip->irqdomain) {
+ if (!gpiochip->irq.domain) {
chip_err(gpiochip, "called %s before setting up irqchip\n",
__func__);
return;
@@ -1564,14 +1554,15 @@ static void gpiochip_set_cascaded_irqchip(struct gpio_chip *gpiochip,
irq_set_chained_handler_and_data(parent_irq, parent_handler,
gpiochip);
- gpiochip->irq_chained_parent = parent_irq;
+ gpiochip->irq.parents = &parent_irq;
+ gpiochip->irq.num_parents = 1;
}
/* Set the parent IRQ for all affected IRQs */
for (offset = 0; offset < gpiochip->ngpio; offset++) {
if (!gpiochip_irqchip_irq_valid(gpiochip, offset))
continue;
- irq_set_parent(irq_find_mapping(gpiochip->irqdomain, offset),
+ irq_set_parent(irq_find_mapping(gpiochip->irq.domain, offset),
parent_irq);
}
}
@@ -1591,6 +1582,11 @@ void gpiochip_set_chained_irqchip(struct gpio_chip *gpiochip,
unsigned int parent_irq,
irq_flow_handler_t parent_handler)
{
+ if (gpiochip->irq.threaded) {
+ chip_err(gpiochip, "tried to chain a threaded gpiochip\n");
+ return;
+ }
+
gpiochip_set_cascaded_irqchip(gpiochip, irqchip, parent_irq,
parent_handler);
}
@@ -1607,10 +1603,6 @@ void gpiochip_set_nested_irqchip(struct gpio_chip *gpiochip,
struct irq_chip *irqchip,
unsigned int parent_irq)
{
- if (!gpiochip->irq_nested) {
- chip_err(gpiochip, "tried to nest a chained gpiochip\n");
- return;
- }
gpiochip_set_cascaded_irqchip(gpiochip, irqchip, parent_irq,
NULL);
}
@@ -1626,10 +1618,11 @@ EXPORT_SYMBOL_GPL(gpiochip_set_nested_irqchip);
* gpiochip by assigning the gpiochip as chip data, and using the irqchip
* stored inside the gpiochip.
*/
-static int gpiochip_irq_map(struct irq_domain *d, unsigned int irq,
- irq_hw_number_t hwirq)
+int gpiochip_irq_map(struct irq_domain *d, unsigned int irq,
+ irq_hw_number_t hwirq)
{
struct gpio_chip *chip = d->host_data;
+ int err = 0;
if (!gpiochip_irqchip_irq_valid(chip, hwirq))
return -ENXIO;
@@ -1639,32 +1632,42 @@ static int gpiochip_irq_map(struct irq_domain *d, unsigned int irq,
* This lock class tells lockdep that GPIO irqs are in a different
* category than their parents, so it won't report false recursion.
*/
- irq_set_lockdep_class(irq, chip->lock_key);
- irq_set_chip_and_handler(irq, chip->irqchip, chip->irq_handler);
+ irq_set_lockdep_class(irq, chip->irq.lock_key);
+ irq_set_chip_and_handler(irq, chip->irq.chip, chip->irq.handler);
/* Chips that use nested thread handlers have them marked */
- if (chip->irq_nested)
+ if (chip->irq.threaded)
irq_set_nested_thread(irq, 1);
irq_set_noprobe(irq);
+ if (chip->irq.num_parents == 1)
+ err = irq_set_parent(irq, chip->irq.parents[0]);
+ else if (chip->irq.map)
+ err = irq_set_parent(irq, chip->irq.map[hwirq]);
+
+ if (err < 0)
+ return err;
+
/*
* No set-up of the hardware will happen if IRQ_TYPE_NONE
* is passed as default type.
*/
- if (chip->irq_default_type != IRQ_TYPE_NONE)
- irq_set_irq_type(irq, chip->irq_default_type);
+ if (chip->irq.default_type != IRQ_TYPE_NONE)
+ irq_set_irq_type(irq, chip->irq.default_type);
return 0;
}
+EXPORT_SYMBOL_GPL(gpiochip_irq_map);
-static void gpiochip_irq_unmap(struct irq_domain *d, unsigned int irq)
+void gpiochip_irq_unmap(struct irq_domain *d, unsigned int irq)
{
struct gpio_chip *chip = d->host_data;
- if (chip->irq_nested)
+ if (chip->irq.threaded)
irq_set_nested_thread(irq, 0);
irq_set_chip_and_handler(irq, NULL, NULL);
irq_set_chip_data(irq, NULL);
}
+EXPORT_SYMBOL_GPL(gpiochip_irq_unmap);
static const struct irq_domain_ops gpiochip_domain_ops = {
.map = gpiochip_irq_map,
@@ -1702,7 +1705,94 @@ static int gpiochip_to_irq(struct gpio_chip *chip, unsigned offset)
{
if (!gpiochip_irqchip_irq_valid(chip, offset))
return -ENXIO;
- return irq_create_mapping(chip->irqdomain, offset);
+
+ return irq_create_mapping(chip->irq.domain, offset);
+}
+
+/**
+ * gpiochip_add_irqchip() - adds an IRQ chip to a GPIO chip
+ * @gpiochip: the GPIO chip to add the IRQ chip to
+ * @lock_key: lockdep class
+ */
+static int gpiochip_add_irqchip(struct gpio_chip *gpiochip,
+ struct lock_class_key *lock_key)
+{
+ struct irq_chip *irqchip = gpiochip->irq.chip;
+ const struct irq_domain_ops *ops;
+ struct device_node *np;
+ unsigned int type;
+ unsigned int i;
+
+ if (!irqchip)
+ return 0;
+
+ if (gpiochip->irq.parent_handler && gpiochip->can_sleep) {
+ chip_err(gpiochip, "you cannot have chained interrupts on a "
+ "chip that may sleep\n");
+ return -EINVAL;
+ }
+
+ np = gpiochip->gpiodev->dev.of_node;
+ type = gpiochip->irq.default_type;
+
+ /*
+ * Specifying a default trigger is a terrible idea if DT or ACPI is
+ * used to configure the interrupts, as you may end up with
+ * conflicting triggers. Tell the user, and reset to NONE.
+ */
+ if (WARN(np && type != IRQ_TYPE_NONE,
+ "%s: Ignoring %u default trigger\n", np->full_name, type))
+ type = IRQ_TYPE_NONE;
+
+ if (has_acpi_companion(gpiochip->parent) && type != IRQ_TYPE_NONE) {
+ acpi_handle_warn(ACPI_HANDLE(gpiochip->parent),
+ "Ignoring %u default trigger\n", type);
+ type = IRQ_TYPE_NONE;
+ }
+
+ gpiochip->to_irq = gpiochip_to_irq;
+ gpiochip->irq.default_type = type;
+ gpiochip->irq.lock_key = lock_key;
+
+ if (gpiochip->irq.domain_ops)
+ ops = gpiochip->irq.domain_ops;
+ else
+ ops = &gpiochip_domain_ops;
+
+ gpiochip->irq.domain = irq_domain_add_simple(np, gpiochip->ngpio,
+ gpiochip->irq.first,
+ ops, gpiochip);
+ if (!gpiochip->irq.domain)
+ return -EINVAL;
+
+ /*
+ * It is possible for a driver to override this, but only if the
+ * alternative functions are both implemented.
+ */
+ if (!irqchip->irq_request_resources &&
+ !irqchip->irq_release_resources) {
+ irqchip->irq_request_resources = gpiochip_irq_reqres;
+ irqchip->irq_release_resources = gpiochip_irq_relres;
+ }
+
+ if (gpiochip->irq.parent_handler) {
+ void *data = gpiochip->irq.parent_handler_data ?: gpiochip;
+
+ for (i = 0; i < gpiochip->irq.num_parents; i++) {
+ /*
+ * The parent IRQ chip is already using the chip_data
+ * for this IRQ chip, so our callbacks simply use the
+ * handler_data.
+ */
+ irq_set_chained_handler_and_data(gpiochip->irq.parents[i],
+ gpiochip->irq.parent_handler,
+ data);
+ }
+ }
+
+ acpi_gpiochip_request_interrupts(gpiochip);
+
+ return 0;
}
/**
@@ -1717,26 +1807,34 @@ static void gpiochip_irqchip_remove(struct gpio_chip *gpiochip)
acpi_gpiochip_free_interrupts(gpiochip);
- if (gpiochip->irq_chained_parent) {
- irq_set_chained_handler(gpiochip->irq_chained_parent, NULL);
- irq_set_handler_data(gpiochip->irq_chained_parent, NULL);
+ if (gpiochip->irq.chip && gpiochip->irq.parent_handler) {
+ struct gpio_irq_chip *irq = &gpiochip->irq;
+ unsigned int i;
+
+ for (i = 0; i < irq->num_parents; i++)
+ irq_set_chained_handler_and_data(irq->parents[i],
+ NULL, NULL);
}
/* Remove all IRQ mappings and delete the domain */
- if (gpiochip->irqdomain) {
+ if (gpiochip->irq.domain) {
+ unsigned int irq;
+
for (offset = 0; offset < gpiochip->ngpio; offset++) {
if (!gpiochip_irqchip_irq_valid(gpiochip, offset))
continue;
- irq_dispose_mapping(
- irq_find_mapping(gpiochip->irqdomain, offset));
+
+ irq = irq_find_mapping(gpiochip->irq.domain, offset);
+ irq_dispose_mapping(irq);
}
- irq_domain_remove(gpiochip->irqdomain);
+
+ irq_domain_remove(gpiochip->irq.domain);
}
- if (gpiochip->irqchip) {
- gpiochip->irqchip->irq_request_resources = NULL;
- gpiochip->irqchip->irq_release_resources = NULL;
- gpiochip->irqchip = NULL;
+ if (gpiochip->irq.chip) {
+ gpiochip->irq.chip->irq_request_resources = NULL;
+ gpiochip->irq.chip->irq_release_resources = NULL;
+ gpiochip->irq.chip = NULL;
}
gpiochip_irqchip_free_valid_mask(gpiochip);
@@ -1751,8 +1849,7 @@ static void gpiochip_irqchip_remove(struct gpio_chip *gpiochip)
* @handler: the irq handler to use (often a predefined irq core function)
* @type: the default type for IRQs on this irqchip, pass IRQ_TYPE_NONE
* to have the core avoid setting up any default type in the hardware.
- * @nested: whether this is a nested irqchip calling handle_nested_irq()
- * in its IRQ handler
+ * @threaded: whether this irqchip uses a nested thread handler
* @lock_key: lockdep class
*
* This function closely associates a certain irqchip with a certain
@@ -1774,7 +1871,7 @@ int gpiochip_irqchip_add_key(struct gpio_chip *gpiochip,
unsigned int first_irq,
irq_flow_handler_t handler,
unsigned int type,
- bool nested,
+ bool threaded,
struct lock_class_key *lock_key)
{
struct device_node *of_node;
@@ -1786,7 +1883,7 @@ int gpiochip_irqchip_add_key(struct gpio_chip *gpiochip,
pr_err("missing gpiochip .dev parent pointer\n");
return -EINVAL;
}
- gpiochip->irq_nested = nested;
+ gpiochip->irq.threaded = threaded;
of_node = gpiochip->parent->of_node;
#ifdef CONFIG_OF_GPIO
/*
@@ -1811,16 +1908,16 @@ int gpiochip_irqchip_add_key(struct gpio_chip *gpiochip,
type = IRQ_TYPE_NONE;
}
- gpiochip->irqchip = irqchip;
- gpiochip->irq_handler = handler;
- gpiochip->irq_default_type = type;
+ gpiochip->irq.chip = irqchip;
+ gpiochip->irq.handler = handler;
+ gpiochip->irq.default_type = type;
gpiochip->to_irq = gpiochip_to_irq;
- gpiochip->lock_key = lock_key;
- gpiochip->irqdomain = irq_domain_add_simple(of_node,
+ gpiochip->irq.lock_key = lock_key;
+ gpiochip->irq.domain = irq_domain_add_simple(of_node,
gpiochip->ngpio, first_irq,
&gpiochip_domain_ops, gpiochip);
- if (!gpiochip->irqdomain) {
- gpiochip->irqchip = NULL;
+ if (!gpiochip->irq.domain) {
+ gpiochip->irq.chip = NULL;
return -EINVAL;
}
@@ -1842,6 +1939,12 @@ EXPORT_SYMBOL_GPL(gpiochip_irqchip_add_key);
#else /* CONFIG_GPIOLIB_IRQCHIP */
+static inline int gpiochip_add_irqchip(struct gpio_chip *gpiochip,
+ struct lock_class_key *key)
+{
+ return 0;
+}
+
static void gpiochip_irqchip_remove(struct gpio_chip *gpiochip) {}
static inline int gpiochip_irqchip_init_valid_mask(struct gpio_chip *gpiochip)
{
@@ -2013,7 +2116,7 @@ EXPORT_SYMBOL_GPL(gpiochip_remove_pin_ranges);
* on each other, and help provide better diagnostics in debugfs.
* They're called even less than the "set direction" calls.
*/
-static int __gpiod_request(struct gpio_desc *desc, const char *label)
+static int gpiod_request_commit(struct gpio_desc *desc, const char *label)
{
struct gpio_chip *chip = desc->gdev->chip;
int status;
@@ -2106,7 +2209,7 @@ int gpiod_request(struct gpio_desc *desc, const char *label)
gdev = desc->gdev;
if (try_module_get(gdev->owner)) {
- status = __gpiod_request(desc, label);
+ status = gpiod_request_commit(desc, label);
if (status < 0)
module_put(gdev->owner);
else
@@ -2119,7 +2222,7 @@ int gpiod_request(struct gpio_desc *desc, const char *label)
return status;
}
-static bool __gpiod_free(struct gpio_desc *desc)
+static bool gpiod_free_commit(struct gpio_desc *desc)
{
bool ret = false;
unsigned long flags;
@@ -2154,7 +2257,7 @@ static bool __gpiod_free(struct gpio_desc *desc)
void gpiod_free(struct gpio_desc *desc)
{
- if (desc && desc->gdev && __gpiod_free(desc)) {
+ if (desc && desc->gdev && gpiod_free_commit(desc)) {
module_put(desc->gdev->owner);
put_device(&desc->gdev->dev);
} else {
@@ -2217,7 +2320,7 @@ struct gpio_desc *gpiochip_request_own_desc(struct gpio_chip *chip, u16 hwnum,
return desc;
}
- err = __gpiod_request(desc, label);
+ err = gpiod_request_commit(desc, label);
if (err < 0)
return ERR_PTR(err);
@@ -2235,7 +2338,7 @@ EXPORT_SYMBOL_GPL(gpiochip_request_own_desc);
void gpiochip_free_own_desc(struct gpio_desc *desc)
{
if (desc)
- __gpiod_free(desc);
+ gpiod_free_commit(desc);
}
EXPORT_SYMBOL_GPL(gpiochip_free_own_desc);
@@ -2291,44 +2394,12 @@ static int gpio_set_drive_single_ended(struct gpio_chip *gc, unsigned offset,
return gc->set_config ? gc->set_config(gc, offset, config) : -ENOTSUPP;
}
-static int _gpiod_direction_output_raw(struct gpio_desc *desc, int value)
+static int gpiod_direction_output_raw_commit(struct gpio_desc *desc, int value)
{
struct gpio_chip *gc = desc->gdev->chip;
int val = !!value;
int ret;
- /* GPIOs used for IRQs shall not be set as output */
- if (test_bit(FLAG_USED_AS_IRQ, &desc->flags)) {
- gpiod_err(desc,
- "%s: tried to set a GPIO tied to an IRQ as output\n",
- __func__);
- return -EIO;
- }
-
- if (test_bit(FLAG_OPEN_DRAIN, &desc->flags)) {
- /* First see if we can enable open drain in hardware */
- ret = gpio_set_drive_single_ended(gc, gpio_chip_hwgpio(desc),
- PIN_CONFIG_DRIVE_OPEN_DRAIN);
- if (!ret)
- goto set_output_value;
- /* Emulate open drain by not actively driving the line high */
- if (val)
- return gpiod_direction_input(desc);
- }
- else if (test_bit(FLAG_OPEN_SOURCE, &desc->flags)) {
- ret = gpio_set_drive_single_ended(gc, gpio_chip_hwgpio(desc),
- PIN_CONFIG_DRIVE_OPEN_SOURCE);
- if (!ret)
- goto set_output_value;
- /* Emulate open source by not actively driving the line low */
- if (!val)
- return gpiod_direction_input(desc);
- } else {
- gpio_set_drive_single_ended(gc, gpio_chip_hwgpio(desc),
- PIN_CONFIG_DRIVE_PUSH_PULL);
- }
-
-set_output_value:
if (!gc->set || !gc->direction_output) {
gpiod_warn(desc,
"%s: missing set() or direction_output() operations\n",
@@ -2358,7 +2429,7 @@ set_output_value:
int gpiod_direction_output_raw(struct gpio_desc *desc, int value)
{
VALIDATE_DESC(desc);
- return _gpiod_direction_output_raw(desc, value);
+ return gpiod_direction_output_raw_commit(desc, value);
}
EXPORT_SYMBOL_GPL(gpiod_direction_output_raw);
@@ -2376,12 +2447,48 @@ EXPORT_SYMBOL_GPL(gpiod_direction_output_raw);
*/
int gpiod_direction_output(struct gpio_desc *desc, int value)
{
+ struct gpio_chip *gc = desc->gdev->chip;
+ int ret;
+
VALIDATE_DESC(desc);
if (test_bit(FLAG_ACTIVE_LOW, &desc->flags))
value = !value;
else
value = !!value;
- return _gpiod_direction_output_raw(desc, value);
+
+ /* GPIOs used for IRQs shall not be set as output */
+ if (test_bit(FLAG_USED_AS_IRQ, &desc->flags)) {
+ gpiod_err(desc,
+ "%s: tried to set a GPIO tied to an IRQ as output\n",
+ __func__);
+ return -EIO;
+ }
+
+ if (test_bit(FLAG_OPEN_DRAIN, &desc->flags)) {
+ /* First see if we can enable open drain in hardware */
+ ret = gpio_set_drive_single_ended(gc, gpio_chip_hwgpio(desc),
+ PIN_CONFIG_DRIVE_OPEN_DRAIN);
+ if (!ret)
+ goto set_output_value;
+ /* Emulate open drain by not actively driving the line high */
+ if (value)
+ return gpiod_direction_input(desc);
+ }
+ else if (test_bit(FLAG_OPEN_SOURCE, &desc->flags)) {
+ ret = gpio_set_drive_single_ended(gc, gpio_chip_hwgpio(desc),
+ PIN_CONFIG_DRIVE_OPEN_SOURCE);
+ if (!ret)
+ goto set_output_value;
+ /* Emulate open source by not actively driving the line low */
+ if (!value)
+ return gpiod_direction_input(desc);
+ } else {
+ gpio_set_drive_single_ended(gc, gpio_chip_hwgpio(desc),
+ PIN_CONFIG_DRIVE_PUSH_PULL);
+ }
+
+set_output_value:
+ return gpiod_direction_output_raw_commit(desc, value);
}
EXPORT_SYMBOL_GPL(gpiod_direction_output);
@@ -2448,7 +2555,7 @@ EXPORT_SYMBOL_GPL(gpiod_is_active_low);
* that the GPIO was actually requested.
*/
-static int _gpiod_get_raw_value(const struct gpio_desc *desc)
+static int gpiod_get_raw_value_commit(const struct gpio_desc *desc)
{
struct gpio_chip *chip;
int offset;
@@ -2462,6 +2569,71 @@ static int _gpiod_get_raw_value(const struct gpio_desc *desc)
return value;
}
+static int gpio_chip_get_multiple(struct gpio_chip *chip,
+ unsigned long *mask, unsigned long *bits)
+{
+ if (chip->get_multiple) {
+ return chip->get_multiple(chip, mask, bits);
+ } else if (chip->get) {
+ int i, value;
+
+ for_each_set_bit(i, mask, chip->ngpio) {
+ value = chip->get(chip, i);
+ if (value < 0)
+ return value;
+ __assign_bit(i, bits, value);
+ }
+ return 0;
+ }
+ return -EIO;
+}
+
+int gpiod_get_array_value_complex(bool raw, bool can_sleep,
+ unsigned int array_size,
+ struct gpio_desc **desc_array,
+ int *value_array)
+{
+ int i = 0;
+
+ while (i < array_size) {
+ struct gpio_chip *chip = desc_array[i]->gdev->chip;
+ unsigned long mask[BITS_TO_LONGS(chip->ngpio)];
+ unsigned long bits[BITS_TO_LONGS(chip->ngpio)];
+ int first, j, ret;
+
+ if (!can_sleep)
+ WARN_ON(chip->can_sleep);
+
+ /* collect all inputs belonging to the same chip */
+ first = i;
+ memset(mask, 0, sizeof(mask));
+ do {
+ const struct gpio_desc *desc = desc_array[i];
+ int hwgpio = gpio_chip_hwgpio(desc);
+
+ __set_bit(hwgpio, mask);
+ i++;
+ } while ((i < array_size) &&
+ (desc_array[i]->gdev->chip == chip));
+
+ ret = gpio_chip_get_multiple(chip, mask, bits);
+ if (ret)
+ return ret;
+
+ for (j = first; j < i; j++) {
+ const struct gpio_desc *desc = desc_array[j];
+ int hwgpio = gpio_chip_hwgpio(desc);
+ int value = test_bit(hwgpio, bits);
+
+ if (!raw && test_bit(FLAG_ACTIVE_LOW, &desc->flags))
+ value = !value;
+ value_array[j] = value;
+ trace_gpio_value(desc_to_gpio(desc), 1, value);
+ }
+ }
+ return 0;
+}
+
/**
* gpiod_get_raw_value() - return a gpio's raw value
* @desc: gpio whose value will be returned
@@ -2477,7 +2649,7 @@ int gpiod_get_raw_value(const struct gpio_desc *desc)
VALIDATE_DESC(desc);
/* Should be using gpio_get_value_cansleep() */
WARN_ON(desc->gdev->chip->can_sleep);
- return _gpiod_get_raw_value(desc);
+ return gpiod_get_raw_value_commit(desc);
}
EXPORT_SYMBOL_GPL(gpiod_get_raw_value);
@@ -2499,7 +2671,7 @@ int gpiod_get_value(const struct gpio_desc *desc)
/* Should be using gpio_get_value_cansleep() */
WARN_ON(desc->gdev->chip->can_sleep);
- value = _gpiod_get_raw_value(desc);
+ value = gpiod_get_raw_value_commit(desc);
if (value < 0)
return value;
@@ -2510,12 +2682,57 @@ int gpiod_get_value(const struct gpio_desc *desc)
}
EXPORT_SYMBOL_GPL(gpiod_get_value);
+/**
+ * gpiod_get_raw_array_value() - read raw values from an array of GPIOs
+ * @array_size: number of elements in the descriptor / value arrays
+ * @desc_array: array of GPIO descriptors whose values will be read
+ * @value_array: array to store the read values
+ *
+ * Read the raw values of the GPIOs, i.e. the values of the physical lines
+ * without regard for their ACTIVE_LOW status. Return 0 in case of success,
+ * else an error code.
+ *
+ * This function should be called from contexts where we cannot sleep,
+ * and it will complain if the GPIO chip functions potentially sleep.
+ */
+int gpiod_get_raw_array_value(unsigned int array_size,
+ struct gpio_desc **desc_array, int *value_array)
+{
+ if (!desc_array)
+ return -EINVAL;
+ return gpiod_get_array_value_complex(true, false, array_size,
+ desc_array, value_array);
+}
+EXPORT_SYMBOL_GPL(gpiod_get_raw_array_value);
+
+/**
+ * gpiod_get_array_value() - read values from an array of GPIOs
+ * @array_size: number of elements in the descriptor / value arrays
+ * @desc_array: array of GPIO descriptors whose values will be read
+ * @value_array: array to store the read values
+ *
+ * Read the logical values of the GPIOs, i.e. taking their ACTIVE_LOW status
+ * into account. Return 0 in case of success, else an error code.
+ *
+ * This function should be called from contexts where we cannot sleep,
+ * and it will complain if the GPIO chip functions potentially sleep.
+ */
+int gpiod_get_array_value(unsigned int array_size,
+ struct gpio_desc **desc_array, int *value_array)
+{
+ if (!desc_array)
+ return -EINVAL;
+ return gpiod_get_array_value_complex(false, false, array_size,
+ desc_array, value_array);
+}
+EXPORT_SYMBOL_GPL(gpiod_get_array_value);
+
/*
- * _gpio_set_open_drain_value() - Set the open drain gpio's value.
+ * gpio_set_open_drain_value_commit() - Set the open drain gpio's value.
* @desc: gpio descriptor whose state need to be set.
* @value: Non-zero for setting it HIGH otherwise it will set to LOW.
*/
-static void _gpio_set_open_drain_value(struct gpio_desc *desc, bool value)
+static void gpio_set_open_drain_value_commit(struct gpio_desc *desc, bool value)
{
int err = 0;
struct gpio_chip *chip = desc->gdev->chip;
@@ -2542,7 +2759,7 @@ static void _gpio_set_open_drain_value(struct gpio_desc *desc, bool value)
* @desc: gpio descriptor whose state need to be set.
* @value: Non-zero for setting it HIGH otherwise it will set to LOW.
*/
-static void _gpio_set_open_source_value(struct gpio_desc *desc, bool value)
+static void gpio_set_open_source_value_commit(struct gpio_desc *desc, bool value)
{
int err = 0;
struct gpio_chip *chip = desc->gdev->chip;
@@ -2564,18 +2781,13 @@ static void _gpio_set_open_source_value(struct gpio_desc *desc, bool value)
__func__, err);
}
-static void _gpiod_set_raw_value(struct gpio_desc *desc, bool value)
+static void gpiod_set_raw_value_commit(struct gpio_desc *desc, bool value)
{
struct gpio_chip *chip;
chip = desc->gdev->chip;
trace_gpio_value(desc_to_gpio(desc), 0, value);
- if (test_bit(FLAG_OPEN_DRAIN, &desc->flags))
- _gpio_set_open_drain_value(desc, value);
- else if (test_bit(FLAG_OPEN_SOURCE, &desc->flags))
- _gpio_set_open_source_value(desc, value);
- else
- chip->set(chip, gpio_chip_hwgpio(desc), value);
+ chip->set(chip, gpio_chip_hwgpio(desc), value);
}
/*
@@ -2630,10 +2842,10 @@ void gpiod_set_array_value_complex(bool raw, bool can_sleep,
* collect all normal outputs belonging to the same chip
* open drain and open source outputs are set individually
*/
- if (test_bit(FLAG_OPEN_DRAIN, &desc->flags)) {
- _gpio_set_open_drain_value(desc, value);
- } else if (test_bit(FLAG_OPEN_SOURCE, &desc->flags)) {
- _gpio_set_open_source_value(desc, value);
+ if (test_bit(FLAG_OPEN_DRAIN, &desc->flags) && !raw) {
+ gpio_set_open_drain_value_commit(desc, value);
+ } else if (test_bit(FLAG_OPEN_SOURCE, &desc->flags) && !raw) {
+ gpio_set_open_source_value_commit(desc, value);
} else {
__set_bit(hwgpio, mask);
if (value)
@@ -2667,7 +2879,7 @@ void gpiod_set_raw_value(struct gpio_desc *desc, int value)
VALIDATE_DESC_VOID(desc);
/* Should be using gpiod_set_value_cansleep() */
WARN_ON(desc->gdev->chip->can_sleep);
- _gpiod_set_raw_value(desc, value);
+ gpiod_set_raw_value_commit(desc, value);
}
EXPORT_SYMBOL_GPL(gpiod_set_raw_value);
@@ -2676,8 +2888,8 @@ EXPORT_SYMBOL_GPL(gpiod_set_raw_value);
* @desc: gpio whose value will be assigned
* @value: value to assign
*
- * Set the logical value of the GPIO, i.e. taking its ACTIVE_LOW status into
- * account
+ * Set the logical value of the GPIO, i.e. taking its ACTIVE_LOW,
+ * OPEN_DRAIN and OPEN_SOURCE flags into account.
*
* This function should be called from contexts where we cannot sleep, and will
* complain if the GPIO chip functions potentially sleep.
@@ -2689,7 +2901,12 @@ void gpiod_set_value(struct gpio_desc *desc, int value)
WARN_ON(desc->gdev->chip->can_sleep);
if (test_bit(FLAG_ACTIVE_LOW, &desc->flags))
value = !value;
- _gpiod_set_raw_value(desc, value);
+ if (test_bit(FLAG_OPEN_DRAIN, &desc->flags))
+ gpio_set_open_drain_value_commit(desc, value);
+ else if (test_bit(FLAG_OPEN_SOURCE, &desc->flags))
+ gpio_set_open_source_value_commit(desc, value);
+ else
+ gpiod_set_raw_value_commit(desc, value);
}
EXPORT_SYMBOL_GPL(gpiod_set_value);
@@ -2890,7 +3107,7 @@ bool gpiochip_line_is_persistent(struct gpio_chip *chip, unsigned int offset)
if (offset >= chip->ngpio)
return false;
- return !test_bit(FLAG_SLEEP_MAY_LOOSE_VALUE,
+ return !test_bit(FLAG_SLEEP_MAY_LOSE_VALUE,
&chip->gpiodev->descs[offset].flags);
}
EXPORT_SYMBOL_GPL(gpiochip_line_is_persistent);
@@ -2908,7 +3125,7 @@ int gpiod_get_raw_value_cansleep(const struct gpio_desc *desc)
{
might_sleep_if(extra_checks);
VALIDATE_DESC(desc);
- return _gpiod_get_raw_value(desc);
+ return gpiod_get_raw_value_commit(desc);
}
EXPORT_SYMBOL_GPL(gpiod_get_raw_value_cansleep);
@@ -2927,7 +3144,7 @@ int gpiod_get_value_cansleep(const struct gpio_desc *desc)
might_sleep_if(extra_checks);
VALIDATE_DESC(desc);
- value = _gpiod_get_raw_value(desc);
+ value = gpiod_get_raw_value_commit(desc);
if (value < 0)
return value;
@@ -2939,6 +3156,53 @@ int gpiod_get_value_cansleep(const struct gpio_desc *desc)
EXPORT_SYMBOL_GPL(gpiod_get_value_cansleep);
/**
+ * gpiod_get_raw_array_value_cansleep() - read raw values from an array of GPIOs
+ * @array_size: number of elements in the descriptor / value arrays
+ * @desc_array: array of GPIO descriptors whose values will be read
+ * @value_array: array to store the read values
+ *
+ * Read the raw values of the GPIOs, i.e. the values of the physical lines
+ * without regard for their ACTIVE_LOW status. Return 0 in case of success,
+ * else an error code.
+ *
+ * This function is to be called from contexts that can sleep.
+ */
+int gpiod_get_raw_array_value_cansleep(unsigned int array_size,
+ struct gpio_desc **desc_array,
+ int *value_array)
+{
+ might_sleep_if(extra_checks);
+ if (!desc_array)
+ return -EINVAL;
+ return gpiod_get_array_value_complex(true, true, array_size,
+ desc_array, value_array);
+}
+EXPORT_SYMBOL_GPL(gpiod_get_raw_array_value_cansleep);
+
+/**
+ * gpiod_get_array_value_cansleep() - read values from an array of GPIOs
+ * @array_size: number of elements in the descriptor / value arrays
+ * @desc_array: array of GPIO descriptors whose values will be read
+ * @value_array: array to store the read values
+ *
+ * Read the logical values of the GPIOs, i.e. taking their ACTIVE_LOW status
+ * into account. Return 0 in case of success, else an error code.
+ *
+ * This function is to be called from contexts that can sleep.
+ */
+int gpiod_get_array_value_cansleep(unsigned int array_size,
+ struct gpio_desc **desc_array,
+ int *value_array)
+{
+ might_sleep_if(extra_checks);
+ if (!desc_array)
+ return -EINVAL;
+ return gpiod_get_array_value_complex(false, true, array_size,
+ desc_array, value_array);
+}
+EXPORT_SYMBOL_GPL(gpiod_get_array_value_cansleep);
+
+/**
* gpiod_set_raw_value_cansleep() - assign a gpio's raw value
* @desc: gpio whose value will be assigned
* @value: value to assign
@@ -2952,7 +3216,7 @@ void gpiod_set_raw_value_cansleep(struct gpio_desc *desc, int value)
{
might_sleep_if(extra_checks);
VALIDATE_DESC_VOID(desc);
- _gpiod_set_raw_value(desc, value);
+ gpiod_set_raw_value_commit(desc, value);
}
EXPORT_SYMBOL_GPL(gpiod_set_raw_value_cansleep);
@@ -2972,7 +3236,7 @@ void gpiod_set_value_cansleep(struct gpio_desc *desc, int value)
VALIDATE_DESC_VOID(desc);
if (test_bit(FLAG_ACTIVE_LOW, &desc->flags))
value = !value;
- _gpiod_set_raw_value(desc, value);
+ gpiod_set_raw_value_commit(desc, value);
}
EXPORT_SYMBOL_GPL(gpiod_set_value_cansleep);
@@ -3268,8 +3532,8 @@ int gpiod_configure_flags(struct gpio_desc *desc, const char *con_id,
set_bit(FLAG_OPEN_DRAIN, &desc->flags);
if (lflags & GPIO_OPEN_SOURCE)
set_bit(FLAG_OPEN_SOURCE, &desc->flags);
- if (lflags & GPIO_SLEEP_MAY_LOOSE_VALUE)
- set_bit(FLAG_SLEEP_MAY_LOOSE_VALUE, &desc->flags);
+ if (lflags & GPIO_SLEEP_MAY_LOSE_VALUE)
+ set_bit(FLAG_SLEEP_MAY_LOSE_VALUE, &desc->flags);
/* No particular flag request, return here... */
if (!(dflags & GPIOD_FLAGS_BIT_DIR_SET)) {
diff --git a/drivers/gpio/gpiolib.h b/drivers/gpio/gpiolib.h
index d003ccb12781..af48322839c3 100644
--- a/drivers/gpio/gpiolib.h
+++ b/drivers/gpio/gpiolib.h
@@ -180,6 +180,10 @@ static inline bool acpi_can_fallback_to_crs(struct acpi_device *adev,
#endif
struct gpio_desc *gpiochip_get_desc(struct gpio_chip *chip, u16 hwnum);
+int gpiod_get_array_value_complex(bool raw, bool can_sleep,
+ unsigned int array_size,
+ struct gpio_desc **desc_array,
+ int *value_array);
void gpiod_set_array_value_complex(bool raw, bool can_sleep,
unsigned int array_size,
struct gpio_desc **desc_array,
@@ -201,7 +205,7 @@ struct gpio_desc {
#define FLAG_OPEN_SOURCE 8 /* Gpio is open source type */
#define FLAG_USED_AS_IRQ 9 /* GPIO is connected to an IRQ */
#define FLAG_IS_HOGGED 11 /* GPIO is hogged */
-#define FLAG_SLEEP_MAY_LOOSE_VALUE 12 /* GPIO may loose value in sleep */
+#define FLAG_SLEEP_MAY_LOSE_VALUE 12 /* GPIO may lose value in sleep */
/* Connection label */
const char *label;