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path: root/drivers/gpio/gpio-pxa.c
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Diffstat (limited to 'drivers/gpio/gpio-pxa.c')
-rw-r--r--drivers/gpio/gpio-pxa.c91
1 files changed, 36 insertions, 55 deletions
diff --git a/drivers/gpio/gpio-pxa.c b/drivers/gpio/gpio-pxa.c
index e9600b556f39..664cf1eef494 100644
--- a/drivers/gpio/gpio-pxa.c
+++ b/drivers/gpio/gpio-pxa.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* linux/arch/arm/plat-pxa/gpio.c
*
@@ -6,10 +7,6 @@
* Author: Nicolas Pitre
* Created: Jun 15, 2001
* Copyright: MontaVista Software Inc.
- *
- * 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/module.h>
#include <linux/clk.h>
@@ -23,7 +20,6 @@
#include <linux/irqchip/chained_irq.h>
#include <linux/io.h>
#include <linux/of.h>
-#include <linux/of_device.h>
#include <linux/pinctrl/consumer.h>
#include <linux/platform_device.h>
#include <linux/syscore_ops.h>
@@ -174,11 +170,6 @@ static inline struct pxa_gpio_bank *gpio_to_pxabank(struct gpio_chip *c,
return chip_to_pxachip(c)->banks + gpio / 32;
}
-static inline int gpio_is_pxa_type(int type)
-{
- return (type & MMP_GPIO) == 0;
-}
-
static inline int gpio_is_mmp_type(int type)
{
return (type & MMP_GPIO) != 0;
@@ -245,6 +236,8 @@ static bool pxa_gpio_has_pinctrl(void)
{
switch (gpio_type) {
case PXA3XX_GPIO:
+ case MMP2_GPIO:
+ case MMP_GPIO:
return false;
default:
@@ -267,7 +260,7 @@ static int pxa_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
int ret;
if (pxa_gpio_has_pinctrl()) {
- ret = pinctrl_gpio_direction_input(chip->base + offset);
+ ret = pinctrl_gpio_direction_input(chip, offset);
if (ret)
return ret;
}
@@ -296,7 +289,7 @@ static int pxa_gpio_direction_output(struct gpio_chip *chip,
writel_relaxed(mask, base + (value ? GPSR_OFFSET : GPCR_OFFSET));
if (pxa_gpio_has_pinctrl()) {
- ret = pinctrl_gpio_direction_output(chip->base + offset);
+ ret = pinctrl_gpio_direction_output(chip, offset);
if (ret)
return ret;
}
@@ -322,12 +315,14 @@ static int pxa_gpio_get(struct gpio_chip *chip, unsigned offset)
return !!(gplr & GPIO_bit(offset));
}
-static void pxa_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
+static int pxa_gpio_set(struct gpio_chip *chip, unsigned int offset, int value)
{
void __iomem *base = gpio_bank_base(chip, offset);
writel_relaxed(GPIO_bit(offset),
base + (value ? GPSR_OFFSET : GPCR_OFFSET));
+
+ return 0;
}
#ifdef CONFIG_OF_GPIO
@@ -345,8 +340,7 @@ static int pxa_gpio_of_xlate(struct gpio_chip *gc,
}
#endif
-static int pxa_init_gpio_chip(struct pxa_gpio_chip *pchip, int ngpio,
- struct device_node *np, void __iomem *regbase)
+static int pxa_init_gpio_chip(struct pxa_gpio_chip *pchip, int ngpio, void __iomem *regbase)
{
int i, gpio, nbanks = DIV_ROUND_UP(ngpio, 32);
struct pxa_gpio_bank *bank;
@@ -356,6 +350,7 @@ static int pxa_init_gpio_chip(struct pxa_gpio_chip *pchip, int ngpio,
if (!pchip->banks)
return -ENOMEM;
+ pchip->chip.parent = pchip->dev;
pchip->chip.label = "gpio-pxa";
pchip->chip.direction_input = pxa_gpio_direction_input;
pchip->chip.direction_output = pxa_gpio_direction_output;
@@ -363,14 +358,10 @@ static int pxa_init_gpio_chip(struct pxa_gpio_chip *pchip, int ngpio,
pchip->chip.set = pxa_gpio_set;
pchip->chip.to_irq = pxa_gpio_to_irq;
pchip->chip.ngpio = ngpio;
-
- if (pxa_gpio_has_pinctrl()) {
- pchip->chip.request = gpiochip_generic_request;
- pchip->chip.free = gpiochip_generic_free;
- }
+ pchip->chip.request = gpiochip_generic_request;
+ pchip->chip.free = gpiochip_generic_free;
#ifdef CONFIG_OF_GPIO
- pchip->chip.of_node = np;
pchip->chip.of_xlate = pxa_gpio_of_xlate;
pchip->chip.of_gpio_n_cells = 2;
#endif
@@ -460,9 +451,8 @@ static irqreturn_t pxa_gpio_demux_handler(int in_irq, void *d)
for_each_set_bit(n, &gedr, BITS_PER_LONG) {
loop = 1;
- generic_handle_irq(
- irq_find_mapping(pchip->irqdomain,
- gpio + n));
+ generic_handle_domain_irq(pchip->irqdomain,
+ gpio + n);
}
}
handled += loop;
@@ -476,9 +466,9 @@ static irqreturn_t pxa_gpio_direct_handler(int in_irq, void *d)
struct pxa_gpio_chip *pchip = d;
if (in_irq == pchip->irq0) {
- generic_handle_irq(irq_find_mapping(pchip->irqdomain, 0));
+ generic_handle_domain_irq(pchip->irqdomain, 0);
} else if (in_irq == pchip->irq1) {
- generic_handle_irq(irq_find_mapping(pchip->irqdomain, 1));
+ generic_handle_domain_irq(pchip->irqdomain, 1);
} else {
pr_err("%s() unknown irq %d\n", __func__, in_irq);
return IRQ_NONE;
@@ -576,7 +566,7 @@ static int pxa_irq_domain_map(struct irq_domain *d, unsigned int irq,
return 0;
}
-const struct irq_domain_ops pxa_irq_domain_ops = {
+static const struct irq_domain_ops pxa_irq_domain_ops = {
.map = pxa_irq_domain_map,
.xlate = irq_domain_xlate_twocell,
};
@@ -621,7 +611,6 @@ static int pxa_gpio_probe(struct platform_device *pdev)
{
struct pxa_gpio_chip *pchip;
struct pxa_gpio_bank *c;
- struct resource *res;
struct clk *clk;
struct pxa_gpio_platform_data *info;
void __iomem *gpio_reg_base;
@@ -649,14 +638,13 @@ static int pxa_gpio_probe(struct platform_device *pdev)
if (!pxa_last_gpio)
return -EINVAL;
- pchip->irqdomain = irq_domain_add_legacy(pdev->dev.of_node,
- pxa_last_gpio + 1, irq_base,
- 0, &pxa_irq_domain_ops, pchip);
+ pchip->irqdomain = irq_domain_create_legacy(dev_fwnode(&pdev->dev), pxa_last_gpio + 1,
+ irq_base, 0, &pxa_irq_domain_ops, pchip);
if (!pchip->irqdomain)
return -ENOMEM;
- irq0 = platform_get_irq_byname(pdev, "gpio0");
- irq1 = platform_get_irq_byname(pdev, "gpio1");
+ irq0 = platform_get_irq_byname_optional(pdev, "gpio0");
+ irq1 = platform_get_irq_byname_optional(pdev, "gpio1");
irq_mux = platform_get_irq_byname(pdev, "gpio_mux");
if ((irq0 > 0 && irq1 <= 0) || (irq0 <= 0 && irq1 > 0)
|| (irq_mux <= 0))
@@ -664,33 +652,22 @@ static int pxa_gpio_probe(struct platform_device *pdev)
pchip->irq0 = irq0;
pchip->irq1 = irq1;
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!res)
- return -EINVAL;
- gpio_reg_base = devm_ioremap(&pdev->dev, res->start,
- resource_size(res));
- if (!gpio_reg_base)
- return -EINVAL;
- clk = clk_get(&pdev->dev, NULL);
+ gpio_reg_base = devm_platform_ioremap_resource(pdev, 0);
+ if (IS_ERR(gpio_reg_base))
+ return PTR_ERR(gpio_reg_base);
+
+ clk = devm_clk_get_enabled(&pdev->dev, NULL);
if (IS_ERR(clk)) {
dev_err(&pdev->dev, "Error %ld to get gpio clock\n",
PTR_ERR(clk));
return PTR_ERR(clk);
}
- ret = clk_prepare_enable(clk);
- if (ret) {
- clk_put(clk);
- return ret;
- }
/* Initialize GPIO chips */
- ret = pxa_init_gpio_chip(pchip, pxa_last_gpio + 1, pdev->dev.of_node,
- gpio_reg_base);
- if (ret) {
- clk_put(clk);
+ ret = pxa_init_gpio_chip(pchip, pxa_last_gpio + 1, gpio_reg_base);
+ if (ret)
return ret;
- }
/* clear all GPIO edge detects */
for_each_gpio_bank(gpio, c, pchip) {
@@ -770,7 +747,7 @@ static int __init pxa_gpio_dt_init(void)
device_initcall(pxa_gpio_dt_init);
#ifdef CONFIG_PM
-static int pxa_gpio_suspend(void)
+static int pxa_gpio_suspend(void *data)
{
struct pxa_gpio_chip *pchip = pxa_gpio_chip;
struct pxa_gpio_bank *c;
@@ -791,7 +768,7 @@ static int pxa_gpio_suspend(void)
return 0;
}
-static void pxa_gpio_resume(void)
+static void pxa_gpio_resume(void *data)
{
struct pxa_gpio_chip *pchip = pxa_gpio_chip;
struct pxa_gpio_bank *c;
@@ -815,14 +792,18 @@ static void pxa_gpio_resume(void)
#define pxa_gpio_resume NULL
#endif
-struct syscore_ops pxa_gpio_syscore_ops = {
+static const struct syscore_ops pxa_gpio_syscore_ops = {
.suspend = pxa_gpio_suspend,
.resume = pxa_gpio_resume,
};
+static struct syscore pxa_gpio_syscore = {
+ .ops = &pxa_gpio_syscore_ops,
+};
+
static int __init pxa_gpio_sysinit(void)
{
- register_syscore_ops(&pxa_gpio_syscore_ops);
+ register_syscore(&pxa_gpio_syscore);
return 0;
}
postcore_initcall(pxa_gpio_sysinit);
generated by cgit (git 2.34.1) at 2025-12-24 19:57:57 +0000