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authorLinus Torvalds <torvalds@linux-foundation.org>2016-10-04 10:25:53 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2016-10-04 10:25:53 -0700
commitf80fa1822d6ccca369578108dc70576cff6c67a0 (patch)
tree52f048d60d00ea6f44c70ef8f4dc0d69247cc8ad /drivers
parent21f54ddae449f4bdd9f1498124901d67202243d9 (diff)
parent6f3bad9670729ea3a7c78b3752a89c94ffa2397a (diff)
Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds
Pull LED driver updates from Jacek Anaszewski: "Three new LED class drivers and some minor fixes and improvementes to the leds-gpio driver, LED Trigger core and documentation" * 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds: leds: triggers: Check return value of kobject_uevent_env() leds: triggers: Return from led_trigger_set() if there is nothing to do leds: gpio: fix and simplify error handling in gpio_leds_create leds: gpio: switch to managed version of led_classdev_register leds: gpio: fix and simplify reading property "label" leds: gpio: simplify gpio_leds_create leds: gpio: add helper cdev_to_gpio_led_data leds: gpio: fix an unhandled error case in create_gpio_led leds: gpio: introduce gpio_blink_set_t leds: add driver for Mellanox systems LEDs Documentation: move oneshot trigger attributes documentation to ABI leds: centralize definition of "default-state" property leds: add PM8058 LEDs driver leds: pm8058: add device tree bindings leds: do not overflow sysfs buffer in led_trigger_show leds: make triggers explicitly non-modular DT: leds: Add bindings for ISSI is31fl319x leds: is31fl319x: 1/3/6/9-channel light effect led driver
Diffstat (limited to 'drivers')
-rw-r--r--drivers/leds/Kconfig28
-rw-r--r--drivers/leds/Makefile3
-rw-r--r--drivers/leds/led-triggers.c25
-rw-r--r--drivers/leds/leds-gpio.c78
-rw-r--r--drivers/leds/leds-is31fl319x.c450
-rw-r--r--drivers/leds/leds-mlxcpld.c430
-rw-r--r--drivers/leds/leds-pm8058.c191
7 files changed, 1144 insertions, 61 deletions
diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig
index 9dcc9b13d495..7a628c6516f6 100644
--- a/drivers/leds/Kconfig
+++ b/drivers/leds/Kconfig
@@ -584,6 +584,18 @@ config LEDS_SEAD3
This driver can also be built as a module. If so the module
will be called leds-sead3.
+config LEDS_IS31FL319X
+ tristate "LED Support for ISSI IS31FL319x I2C LED controller family"
+ depends on LEDS_CLASS && I2C && OF
+ select REGMAP_I2C
+ help
+ This option enables support for LEDs connected to ISSI IS31FL319x
+ fancy LED driver chips accessed via the I2C bus.
+ Driver supports individual PWM brightness control for each channel.
+
+ This driver can also be built as a module. If so the module will be
+ called leds-is31fl319x.
+
config LEDS_IS31FL32XX
tristate "LED support for ISSI IS31FL32XX I2C LED controller family"
depends on LEDS_CLASS && I2C && OF
@@ -631,6 +643,22 @@ config LEDS_VERSATILE
This option enabled support for the LEDs on the ARM Versatile
and RealView boards. Say Y to enabled these.
+config LEDS_PM8058
+ tristate "LED Support for the Qualcomm PM8058 PMIC"
+ depends on MFD_PM8921_CORE
+ depends on LEDS_CLASS
+ help
+ Choose this option if you want to use the LED drivers in
+ the Qualcomm PM8058 PMIC.
+
+config LEDS_MLXCPLD
+ tristate "LED support for the Mellanox boards"
+ depends on X86_64 && DMI
+ depends on LEDS_CLASS
+ help
+ This option enabled support for the LEDs on the Mellanox
+ boards. Say Y to enabled these.
+
comment "LED Triggers"
source "drivers/leds/trigger/Kconfig"
diff --git a/drivers/leds/Makefile b/drivers/leds/Makefile
index 0684c865a1c0..3965070190f5 100644
--- a/drivers/leds/Makefile
+++ b/drivers/leds/Makefile
@@ -67,7 +67,10 @@ obj-$(CONFIG_LEDS_MENF21BMC) += leds-menf21bmc.o
obj-$(CONFIG_LEDS_KTD2692) += leds-ktd2692.o
obj-$(CONFIG_LEDS_POWERNV) += leds-powernv.o
obj-$(CONFIG_LEDS_SEAD3) += leds-sead3.o
+obj-$(CONFIG_LEDS_IS31FL319X) += leds-is31fl319x.o
obj-$(CONFIG_LEDS_IS31FL32XX) += leds-is31fl32xx.o
+obj-$(CONFIG_LEDS_PM8058) += leds-pm8058.o
+obj-$(CONFIG_LEDS_MLXCPLD) += leds-mlxcpld.o
# LED SPI Drivers
obj-$(CONFIG_LEDS_DAC124S085) += leds-dac124s085.o
diff --git a/drivers/leds/led-triggers.c b/drivers/leds/led-triggers.c
index c92702a684ce..431123b048a2 100644
--- a/drivers/leds/led-triggers.c
+++ b/drivers/leds/led-triggers.c
@@ -11,7 +11,7 @@
*
*/
-#include <linux/module.h>
+#include <linux/export.h>
#include <linux/kernel.h>
#include <linux/list.h>
#include <linux/spinlock.h>
@@ -81,21 +81,23 @@ ssize_t led_trigger_show(struct device *dev, struct device_attribute *attr,
down_read(&led_cdev->trigger_lock);
if (!led_cdev->trigger)
- len += sprintf(buf+len, "[none] ");
+ len += scnprintf(buf+len, PAGE_SIZE - len, "[none] ");
else
- len += sprintf(buf+len, "none ");
+ len += scnprintf(buf+len, PAGE_SIZE - len, "none ");
list_for_each_entry(trig, &trigger_list, next_trig) {
if (led_cdev->trigger && !strcmp(led_cdev->trigger->name,
trig->name))
- len += sprintf(buf+len, "[%s] ", trig->name);
+ len += scnprintf(buf+len, PAGE_SIZE - len, "[%s] ",
+ trig->name);
else
- len += sprintf(buf+len, "%s ", trig->name);
+ len += scnprintf(buf+len, PAGE_SIZE - len, "%s ",
+ trig->name);
}
up_read(&led_cdev->trigger_lock);
up_read(&triggers_list_lock);
- len += sprintf(len+buf, "\n");
+ len += scnprintf(len+buf, PAGE_SIZE - len, "\n");
return len;
}
EXPORT_SYMBOL_GPL(led_trigger_show);
@@ -108,6 +110,9 @@ void led_trigger_set(struct led_classdev *led_cdev, struct led_trigger *trig)
char *envp[2];
const char *name;
+ if (!led_cdev->trigger && !trig)
+ return;
+
name = trig ? trig->name : "none";
event = kasprintf(GFP_KERNEL, "TRIGGER=%s", name);
@@ -136,7 +141,9 @@ void led_trigger_set(struct led_classdev *led_cdev, struct led_trigger *trig)
if (event) {
envp[0] = event;
envp[1] = NULL;
- kobject_uevent_env(&led_cdev->dev->kobj, KOBJ_CHANGE, envp);
+ if (kobject_uevent_env(&led_cdev->dev->kobj, KOBJ_CHANGE, envp))
+ dev_err(led_cdev->dev,
+ "%s: Error sending uevent\n", __func__);
kfree(event);
}
}
@@ -357,7 +364,3 @@ void led_trigger_unregister_simple(struct led_trigger *trig)
kfree(trig);
}
EXPORT_SYMBOL_GPL(led_trigger_unregister_simple);
-
-MODULE_AUTHOR("Richard Purdie");
-MODULE_LICENSE("GPL");
-MODULE_DESCRIPTION("LED Triggers Core");
diff --git a/drivers/leds/leds-gpio.c b/drivers/leds/leds-gpio.c
index 9b991d46ed84..d400dcaf4d29 100644
--- a/drivers/leds/leds-gpio.c
+++ b/drivers/leds/leds-gpio.c
@@ -26,15 +26,19 @@ struct gpio_led_data {
struct gpio_desc *gpiod;
u8 can_sleep;
u8 blinking;
- int (*platform_gpio_blink_set)(struct gpio_desc *desc, int state,
- unsigned long *delay_on, unsigned long *delay_off);
+ gpio_blink_set_t platform_gpio_blink_set;
};
+static inline struct gpio_led_data *
+ cdev_to_gpio_led_data(struct led_classdev *led_cdev)
+{
+ return container_of(led_cdev, struct gpio_led_data, cdev);
+}
+
static void gpio_led_set(struct led_classdev *led_cdev,
enum led_brightness value)
{
- struct gpio_led_data *led_dat =
- container_of(led_cdev, struct gpio_led_data, cdev);
+ struct gpio_led_data *led_dat = cdev_to_gpio_led_data(led_cdev);
int level;
if (value == LED_OFF)
@@ -64,8 +68,7 @@ static int gpio_led_set_blocking(struct led_classdev *led_cdev,
static int gpio_blink_set(struct led_classdev *led_cdev,
unsigned long *delay_on, unsigned long *delay_off)
{
- struct gpio_led_data *led_dat =
- container_of(led_cdev, struct gpio_led_data, cdev);
+ struct gpio_led_data *led_dat = cdev_to_gpio_led_data(led_cdev);
led_dat->blinking = 1;
return led_dat->platform_gpio_blink_set(led_dat->gpiod, GPIO_LED_BLINK,
@@ -74,8 +77,7 @@ static int gpio_blink_set(struct led_classdev *led_cdev,
static int create_gpio_led(const struct gpio_led *template,
struct gpio_led_data *led_dat, struct device *parent,
- int (*blink_set)(struct gpio_desc *, int, unsigned long *,
- unsigned long *))
+ gpio_blink_set_t blink_set)
{
int ret, state;
@@ -120,10 +122,13 @@ static int create_gpio_led(const struct gpio_led *template,
led_dat->platform_gpio_blink_set = blink_set;
led_dat->cdev.blink_set = gpio_blink_set;
}
- if (template->default_state == LEDS_GPIO_DEFSTATE_KEEP)
- state = !!gpiod_get_value_cansleep(led_dat->gpiod);
- else
+ if (template->default_state == LEDS_GPIO_DEFSTATE_KEEP) {
+ state = gpiod_get_value_cansleep(led_dat->gpiod);
+ if (state < 0)
+ return state;
+ } else {
state = (template->default_state == LEDS_GPIO_DEFSTATE_ON);
+ }
led_dat->cdev.brightness = state ? LED_FULL : LED_OFF;
if (!template->retain_state_suspended)
led_dat->cdev.flags |= LED_CORE_SUSPENDRESUME;
@@ -134,7 +139,7 @@ static int create_gpio_led(const struct gpio_led *template,
if (ret < 0)
return ret;
- return led_classdev_register(parent, &led_dat->cdev);
+ return devm_led_classdev_register(parent, &led_dat->cdev);
}
struct gpio_leds_priv {
@@ -154,7 +159,6 @@ static struct gpio_leds_priv *gpio_leds_create(struct platform_device *pdev)
struct fwnode_handle *child;
struct gpio_leds_priv *priv;
int count, ret;
- struct device_node *np;
count = device_get_child_node_count(dev);
if (!count)
@@ -168,26 +172,22 @@ static struct gpio_leds_priv *gpio_leds_create(struct platform_device *pdev)
struct gpio_led_data *led_dat = &priv->leds[priv->num_leds];
struct gpio_led led = {};
const char *state = NULL;
+ struct device_node *np = to_of_node(child);
led.gpiod = devm_get_gpiod_from_child(dev, NULL, child);
if (IS_ERR(led.gpiod)) {
fwnode_handle_put(child);
- ret = PTR_ERR(led.gpiod);
- goto err;
+ return ERR_CAST(led.gpiod);
}
- np = to_of_node(child);
-
- if (fwnode_property_present(child, "label")) {
- fwnode_property_read_string(child, "label", &led.name);
- } else {
- if (IS_ENABLED(CONFIG_OF) && !led.name && np)
- led.name = np->name;
- if (!led.name) {
- ret = -EINVAL;
- goto err;
- }
+ ret = fwnode_property_read_string(child, "label", &led.name);
+ if (ret && IS_ENABLED(CONFIG_OF) && np)
+ led.name = np->name;
+ if (!led.name) {
+ fwnode_handle_put(child);
+ return ERR_PTR(-EINVAL);
}
+
fwnode_property_read_string(child, "linux,default-trigger",
&led.default_trigger);
@@ -209,18 +209,13 @@ static struct gpio_leds_priv *gpio_leds_create(struct platform_device *pdev)
ret = create_gpio_led(&led, led_dat, dev, NULL);
if (ret < 0) {
fwnode_handle_put(child);
- goto err;
+ return ERR_PTR(ret);
}
led_dat->cdev.dev->of_node = np;
priv->num_leds++;
}
return priv;
-
-err:
- for (count = priv->num_leds - 1; count >= 0; count--)
- led_classdev_unregister(&priv->leds[count].cdev);
- return ERR_PTR(ret);
}
static const struct of_device_id of_gpio_leds_match[] = {
@@ -248,13 +243,8 @@ static int gpio_led_probe(struct platform_device *pdev)
ret = create_gpio_led(&pdata->leds[i],
&priv->leds[i],
&pdev->dev, pdata->gpio_blink_set);
- if (ret < 0) {
- /* On failure: unwind the led creations */
- for (i = i - 1; i >= 0; i--)
- led_classdev_unregister(
- &priv->leds[i].cdev);
+ if (ret < 0)
return ret;
- }
}
} else {
priv = gpio_leds_create(pdev);
@@ -267,17 +257,6 @@ static int gpio_led_probe(struct platform_device *pdev)
return 0;
}
-static int gpio_led_remove(struct platform_device *pdev)
-{
- struct gpio_leds_priv *priv = platform_get_drvdata(pdev);
- int i;
-
- for (i = 0; i < priv->num_leds; i++)
- led_classdev_unregister(&priv->leds[i].cdev);
-
- return 0;
-}
-
static void gpio_led_shutdown(struct platform_device *pdev)
{
struct gpio_leds_priv *priv = platform_get_drvdata(pdev);
@@ -292,7 +271,6 @@ static void gpio_led_shutdown(struct platform_device *pdev)
static struct platform_driver gpio_led_driver = {
.probe = gpio_led_probe,
- .remove = gpio_led_remove,
.shutdown = gpio_led_shutdown,
.driver = {
.name = "leds-gpio",
diff --git a/drivers/leds/leds-is31fl319x.c b/drivers/leds/leds-is31fl319x.c
new file mode 100644
index 000000000000..f123309597e4
--- /dev/null
+++ b/drivers/leds/leds-is31fl319x.c
@@ -0,0 +1,450 @@
+/*
+ * Copyright 2015-16 Golden Delicious Computers
+ *
+ * Author: Nikolaus Schaller <hns@goldelico.com>
+ *
+ * This file is subject to the terms and conditions of version 2 of
+ * the GNU General Public License. See the file COPYING in the main
+ * directory of this archive for more details.
+ *
+ * LED driver for the IS31FL319{0,1,3,6,9} to drive 1, 3, 6 or 9 light
+ * effect LEDs.
+ *
+ */
+
+#include <linux/err.h>
+#include <linux/i2c.h>
+#include <linux/leds.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/regmap.h>
+#include <linux/slab.h>
+
+/* register numbers */
+#define IS31FL319X_SHUTDOWN 0x00
+#define IS31FL319X_CTRL1 0x01
+#define IS31FL319X_CTRL2 0x02
+#define IS31FL319X_CONFIG1 0x03
+#define IS31FL319X_CONFIG2 0x04
+#define IS31FL319X_RAMP_MODE 0x05
+#define IS31FL319X_BREATH_MASK 0x06
+#define IS31FL319X_PWM(channel) (0x07 + channel)
+#define IS31FL319X_DATA_UPDATE 0x10
+#define IS31FL319X_T0(channel) (0x11 + channel)
+#define IS31FL319X_T123_1 0x1a
+#define IS31FL319X_T123_2 0x1b
+#define IS31FL319X_T123_3 0x1c
+#define IS31FL319X_T4(channel) (0x1d + channel)
+#define IS31FL319X_TIME_UPDATE 0x26
+#define IS31FL319X_RESET 0xff
+
+#define IS31FL319X_REG_CNT (IS31FL319X_RESET + 1)
+
+#define IS31FL319X_MAX_LEDS 9
+
+/* CS (Current Setting) in CONFIG2 register */
+#define IS31FL319X_CONFIG2_CS_SHIFT 4
+#define IS31FL319X_CONFIG2_CS_MASK 0x7
+#define IS31FL319X_CONFIG2_CS_STEP_REF 12
+
+#define IS31FL319X_CURRENT_MIN ((u32)5000)
+#define IS31FL319X_CURRENT_MAX ((u32)40000)
+#define IS31FL319X_CURRENT_STEP ((u32)5000)
+#define IS31FL319X_CURRENT_DEFAULT ((u32)20000)
+
+/* Audio gain in CONFIG2 register */
+#define IS31FL319X_AUDIO_GAIN_DB_MAX ((u32)21)
+#define IS31FL319X_AUDIO_GAIN_DB_STEP ((u32)3)
+
+/*
+ * regmap is used as a cache of chip's register space,
+ * to avoid reading back brightness values from chip,
+ * which is known to hang.
+ */
+struct is31fl319x_chip {
+ const struct is31fl319x_chipdef *cdef;
+ struct i2c_client *client;
+ struct regmap *regmap;
+ struct mutex lock;
+ u32 audio_gain_db;
+
+ struct is31fl319x_led {
+ struct is31fl319x_chip *chip;
+ struct led_classdev cdev;
+ u32 max_microamp;
+ bool configured;
+ } leds[IS31FL319X_MAX_LEDS];
+};
+
+struct is31fl319x_chipdef {
+ int num_leds;
+};
+
+static const struct is31fl319x_chipdef is31fl3190_cdef = {
+ .num_leds = 1,
+};
+
+static const struct is31fl319x_chipdef is31fl3193_cdef = {
+ .num_leds = 3,
+};
+
+static const struct is31fl319x_chipdef is31fl3196_cdef = {
+ .num_leds = 6,
+};
+
+static const struct is31fl319x_chipdef is31fl3199_cdef = {
+ .num_leds = 9,
+};
+
+static const struct of_device_id of_is31fl319x_match[] = {
+ { .compatible = "issi,is31fl3190", .data = &is31fl3190_cdef, },
+ { .compatible = "issi,is31fl3191", .data = &is31fl3190_cdef, },
+ { .compatible = "issi,is31fl3193", .data = &is31fl3193_cdef, },
+ { .compatible = "issi,is31fl3196", .data = &is31fl3196_cdef, },
+ { .compatible = "issi,is31fl3199", .data = &is31fl3199_cdef, },
+ { .compatible = "si-en,sn3199", .data = &is31fl3199_cdef, },
+ { }
+};
+MODULE_DEVICE_TABLE(of, of_is31fl319x_match);
+
+static int is31fl319x_brightness_set(struct led_classdev *cdev,
+ enum led_brightness brightness)
+{
+ struct is31fl319x_led *led = container_of(cdev, struct is31fl319x_led,
+ cdev);
+ struct is31fl319x_chip *is31 = led->chip;
+ int chan = led - is31->leds;
+ int ret;
+ int i;
+ u8 ctrl1 = 0, ctrl2 = 0;
+
+ dev_dbg(&is31->client->dev, "%s %d: %d\n", __func__, chan, brightness);
+
+ mutex_lock(&is31->lock);
+
+ /* update PWM register */
+ ret = regmap_write(is31->regmap, IS31FL319X_PWM(chan), brightness);
+ if (ret < 0)
+ goto out;
+
+ /* read current brightness of all PWM channels */
+ for (i = 0; i < is31->cdef->num_leds; i++) {
+ unsigned int pwm_value;
+ bool on;
+
+ /*
+ * since neither cdev nor the chip can provide
+ * the current setting, we read from the regmap cache
+ */
+
+ ret = regmap_read(is31->regmap, IS31FL319X_PWM(i), &pwm_value);
+ dev_dbg(&is31->client->dev, "%s read %d: ret=%d: %d\n",
+ __func__, i, ret, pwm_value);
+ on = ret >= 0 && pwm_value > LED_OFF;
+
+ if (i < 3)
+ ctrl1 |= on << i; /* 0..2 => bit 0..2 */
+ else if (i < 6)
+ ctrl1 |= on << (i + 1); /* 3..5 => bit 4..6 */
+ else
+ ctrl2 |= on << (i - 6); /* 6..8 => bit 0..2 */
+ }
+
+ if (ctrl1 > 0 || ctrl2 > 0) {
+ dev_dbg(&is31->client->dev, "power up %02x %02x\n",
+ ctrl1, ctrl2);
+ regmap_write(is31->regmap, IS31FL319X_CTRL1, ctrl1);
+ regmap_write(is31->regmap, IS31FL319X_CTRL2, ctrl2);
+ /* update PWMs */
+ regmap_write(is31->regmap, IS31FL319X_DATA_UPDATE, 0x00);
+ /* enable chip from shut down */
+ ret = regmap_write(is31->regmap, IS31FL319X_SHUTDOWN, 0x01);
+ } else {
+ dev_dbg(&is31->client->dev, "power down\n");
+ /* shut down (no need to clear CTRL1/2) */
+ ret = regmap_write(is31->regmap, IS31FL319X_SHUTDOWN, 0x00);
+ }
+
+out:
+ mutex_unlock(&is31->lock);
+
+ return ret;
+}
+
+static int is31fl319x_parse_child_dt(const struct device *dev,
+ const struct device_node *child,
+ struct is31fl319x_led *led)
+{
+ struct led_classdev *cdev = &led->cdev;
+ int ret;
+
+ if (of_property_read_string(child, "label", &cdev->name))
+ cdev->name = child->name;
+
+ ret = of_property_read_string(child, "linux,default-trigger",
+ &cdev->default_trigger);
+ if (ret < 0 && ret != -EINVAL) /* is optional */
+ return ret;
+
+ led->max_microamp = IS31FL319X_CURRENT_DEFAULT;
+ ret = of_property_read_u32(child, "led-max-microamp",
+ &led->max_microamp);
+ if (!ret) {
+ if (led->max_microamp < IS31FL319X_CURRENT_MIN)
+ return -EINVAL; /* not supported */
+ led->max_microamp = min(led->max_microamp,
+ IS31FL319X_CURRENT_MAX);
+ }
+
+ return 0;
+}
+
+static int is31fl319x_parse_dt(struct device *dev,
+ struct is31fl319x_chip *is31)
+{
+ struct device_node *np = dev->of_node, *child;
+ const struct of_device_id *of_dev_id;
+ int count;
+ int ret;
+
+ if (!np)
+ return -ENODEV;
+
+ of_dev_id = of_match_device(of_is31fl319x_match, dev);
+ if (!of_dev_id) {
+ dev_err(dev, "Failed to match device with supported chips\n");
+ return -EINVAL;
+ }
+
+ is31->cdef = of_dev_id->data;
+
+ count = of_get_child_count(np);
+
+ dev_dbg(dev, "probe %s with %d leds defined in DT\n",
+ of_dev_id->compatible, count);
+
+ if (!count || count > is31->cdef->num_leds) {
+ dev_err(dev, "Number of leds defined must be between 1 and %u\n",
+ is31->cdef->num_leds);
+ return -ENODEV;
+ }
+
+ for_each_child_of_node(np, child) {
+ struct is31fl319x_led *led;
+ u32 reg;
+
+ ret = of_property_read_u32(child, "reg", &reg);
+ if (ret) {
+ dev_err(dev, "Failed to read led 'reg' property\n");
+ goto put_child_node;
+ }
+
+ if (reg < 1 || reg > is31->cdef->num_leds) {
+ dev_err(dev, "invalid led reg %u\n", reg);
+ ret = -EINVAL;
+ goto put_child_node;
+ }
+
+ led = &is31->leds[reg - 1];
+
+ if (led->configured) {
+ dev_err(dev, "led %u is already configured\n", reg);
+ ret = -EINVAL;
+ goto put_child_node;
+ }
+
+ ret = is31fl319x_parse_child_dt(dev, child, led);
+ if (ret) {
+ dev_err(dev, "led %u DT parsing failed\n", reg);
+ goto put_child_node;
+ }
+
+ led->configured = true;
+ }
+
+ is31->audio_gain_db = 0;
+ ret = of_property_read_u32(np, "audio-gain-db", &is31->audio_gain_db);
+ if (!ret)
+ is31->audio_gain_db = min(is31->audio_gain_db,
+ IS31FL319X_AUDIO_GAIN_DB_MAX);
+
+ return 0;
+
+put_child_node:
+ of_node_put(child);
+ return ret;
+}
+
+static bool is31fl319x_readable_reg(struct device *dev, unsigned int reg)
+{ /* we have no readable registers */
+ return false;
+}
+
+static bool is31fl319x_volatile_reg(struct device *dev, unsigned int reg)
+{ /* volatile registers are not cached */
+ switch (reg) {
+ case IS31FL319X_DATA_UPDATE:
+ case IS31FL319X_TIME_UPDATE:
+ case IS31FL319X_RESET:
+ return true; /* always write-through */
+ default:
+ return false;
+ }
+}
+
+static const struct reg_default is31fl319x_reg_defaults[] = {
+ { IS31FL319X_CONFIG1, 0x00},
+ { IS31FL319X_CONFIG2, 0x00},
+ { IS31FL319X_PWM(0), 0x00},
+ { IS31FL319X_PWM(1), 0x00},
+ { IS31FL319X_PWM(2), 0x00},
+ { IS31FL319X_PWM(3), 0x00},
+ { IS31FL319X_PWM(4), 0x00},
+ { IS31FL319X_PWM(5), 0x00},
+ { IS31FL319X_PWM(6), 0x00},
+ { IS31FL319X_PWM(7), 0x00},
+ { IS31FL319X_PWM(8), 0x00},
+};
+
+static struct regmap_config regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .max_register = IS31FL319X_REG_CNT,
+ .cache_type = REGCACHE_FLAT,
+ .readable_reg = is31fl319x_readable_reg,
+ .volatile_reg = is31fl319x_volatile_reg,
+ .reg_defaults = is31fl319x_reg_defaults,
+ .num_reg_defaults = ARRAY_SIZE(is31fl319x_reg_defaults),
+};
+
+static inline int is31fl319x_microamp_to_cs(struct device *dev, u32 microamp)
+{ /* round down to nearest supported value (range check done by caller) */
+ u32 step = microamp / IS31FL319X_CURRENT_STEP;
+
+ return ((IS31FL319X_CONFIG2_CS_STEP_REF - step) &
+ IS31FL319X_CONFIG2_CS_MASK) <<
+ IS31FL319X_CONFIG2_CS_SHIFT; /* CS encoding */
+}
+
+static inline int is31fl319x_db_to_gain(u32 dezibel)
+{ /* round down to nearest supported value (range check done by caller) */
+ return dezibel / IS31FL319X_AUDIO_GAIN_DB_STEP;
+}
+
+static int is31fl319x_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct is31fl319x_chip *is31;
+ struct device *dev = &client->dev;
+ struct i2c_adapter *adapter = to_i2c_adapter(dev->parent);
+ int err;
+ int i = 0;
+ u32 aggregated_led_microamp = IS31FL319X_CURRENT_MAX;
+
+ if (!i2c_check_functionality(adapter, I2C_FUNC_I2C))
+ return -EIO;
+
+ is31 = devm_kzalloc(&client->dev, sizeof(*is31), GFP_KERNEL);
+ if (!is31)
+ return -ENOMEM;
+
+ mutex_init(&is31->lock);
+
+ err = is31fl319x_parse_dt(&client->dev, is31);
+ if (err)
+ goto free_mutex;
+
+ is31->client = client;
+ is31->regmap = devm_regmap_init_i2c(client, &regmap_config);
+ if (IS_ERR(is31->regmap)) {
+ dev_err(&client->dev, "failed to allocate register map\n");
+ err = PTR_ERR(is31->regmap);
+ goto free_mutex;
+ }
+
+ i2c_set_clientdata(client, is31);
+
+ /* check for write-reply from chip (we can't read any registers) */
+ err = regmap_write(is31->regmap, IS31FL319X_RESET, 0x00);
+ if (err < 0) {
+ dev_err(&client->dev, "no response from chip write: err = %d\n",
+ err);
+ err = -EIO; /* does not answer */
+ goto free_mutex;
+ }
+
+ /*
+ * Kernel conventions require per-LED led-max-microamp property.
+ * But the chip does not allow to limit individual LEDs.
+ * So we take minimum from all subnodes for safety of hardware.
+ */
+ for (i = 0; i < is31->cdef->num_leds; i++)
+ if (is31->leds[i].configured &&
+ is31->leds[i].max_microamp < aggregated_led_microamp)
+ aggregated_led_microamp = is31->leds[i].max_microamp;
+
+ regmap_write(is31->regmap, IS31FL319X_CONFIG2,
+ is31fl319x_microamp_to_cs(dev, aggregated_led_microamp) |
+ is31fl319x_db_to_gain(is31->audio_gain_db));
+
+ for (i = 0; i < is31->cdef->num_leds; i++) {
+ struct is31fl319x_led *led = &is31->leds[i];
+
+ if (!led->configured)
+ continue;
+
+ led->chip = is31;
+ led->cdev.brightness_set_blocking = is31fl319x_brightness_set;
+
+ err = devm_led_classdev_register(&client->dev, &led->cdev);
+ if (err < 0)
+ goto free_mutex;
+ }
+
+ return 0;
+
+free_mutex:
+ mutex_destroy(&is31->lock);
+ return err;
+}
+
+static int is31fl319x_remove(struct i2c_client *client)
+{
+ struct is31fl319x_chip *is31 = i2c_get_clientdata(client);
+
+ mutex_destroy(&is31->lock);
+ return 0;
+}
+
+/*
+ * i2c-core (and modalias) requires that id_table be properly filled,
+ * even though it is not used for DeviceTree based instantiation.
+ */
+static const struct i2c_device_id is31fl319x_id[] = {
+ { "is31fl3190" },
+ { "is31fl3191" },
+ { "is31fl3193" },
+ { "is31fl3196" },
+ { "is31fl3199" },
+ { "sn3199" },
+ {},
+};
+MODULE_DEVICE_TABLE(i2c, is31fl319x_id);
+
+static struct i2c_driver is31fl319x_driver = {
+ .driver = {
+ .name = "leds-is31fl319x",
+ .of_match_table = of_match_ptr(of_is31fl319x_match),
+ },
+ .probe = is31fl319x_probe,
+ .remove = is31fl319x_remove,
+ .id_table = is31fl319x_id,
+};
+
+module_i2c_driver(is31fl319x_driver);
+
+MODULE_AUTHOR("H. Nikolaus Schaller <hns@goldelico.com>");
+MODULE_AUTHOR("Andrey Utkin <andrey_utkin@fastmail.com>");
+MODULE_DESCRIPTION("IS31FL319X LED driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/leds/leds-mlxcpld.c b/drivers/leds/leds-mlxcpld.c
new file mode 100644
index 000000000000..197ab9b29a9c
--- /dev/null
+++ b/drivers/leds/leds-mlxcpld.c
@@ -0,0 +1,430 @@
+/*
+ * drivers/leds/leds-mlxcpld.c
+ * Copyright (c) 2016 Mellanox Technologies. All rights reserved.
+ * Copyright (c) 2016 Vadim Pasternak <vadimp@mellanox.com>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the names of the copyright holders nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2 as published by the Free
+ * Software Foundation.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <linux/acpi.h>
+#include <linux/device.h>
+#include <linux/dmi.h>
+#include <linux/hwmon.h>
+#include <linux/hwmon-sysfs.h>
+#include <linux/io.h>
+#include <linux/leds.h>
+#include <linux/module.h>
+#include <linux/mod_devicetable.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+
+#define MLXPLAT_CPLD_LPC_REG_BASE_ADRR 0x2500 /* LPC bus access */
+
+/* Color codes for LEDs */
+#define MLXCPLD_LED_OFFSET_HALF 0x01 /* Offset from solid: 3Hz blink */
+#define MLXCPLD_LED_OFFSET_FULL 0x02 /* Offset from solid: 6Hz blink */
+#define MLXCPLD_LED_IS_OFF 0x00 /* Off */
+#define MLXCPLD_LED_RED_STATIC_ON 0x05 /* Solid red */
+#define MLXCPLD_LED_RED_BLINK_HALF (MLXCPLD_LED_RED_STATIC_ON + \
+ MLXCPLD_LED_OFFSET_HALF)
+#define MLXCPLD_LED_RED_BLINK_FULL (MLXCPLD_LED_RED_STATIC_ON + \
+ MLXCPLD_LED_OFFSET_FULL)
+#define MLXCPLD_LED_GREEN_STATIC_ON 0x0D /* Solid green */
+#define MLXCPLD_LED_GREEN_BLINK_HALF (MLXCPLD_LED_GREEN_STATIC_ON + \
+ MLXCPLD_LED_OFFSET_HALF)
+#define MLXCPLD_LED_GREEN_BLINK_FULL (MLXCPLD_LED_GREEN_STATIC_ON + \
+ MLXCPLD_LED_OFFSET_FULL)
+#define MLXCPLD_LED_BLINK_3HZ 167 /* ~167 msec off/on */
+#define MLXCPLD_LED_BLINK_6HZ 83 /* ~83 msec off/on */
+
+/**
+ * mlxcpld_param - LED access parameters:
+ * @offset - offset for LED access in CPLD device
+ * @mask - mask for LED access in CPLD device
+ * @base_color - base color code for LED
+**/
+struct mlxcpld_param {
+ u8 offset;
+ u8 mask;
+ u8 base_color;
+};
+
+/**
+ * mlxcpld_led_priv - LED private data:
+ * @cled - LED class device instance
+ * @param - LED CPLD access parameters
+**/
+struct mlxcpld_led_priv {
+ struct led_classdev cdev;
+ struct mlxcpld_param param;
+};
+
+#define cdev_to_priv(c) container_of(c, struct mlxcpld_led_priv, cdev)
+
+/**
+ * mlxcpld_led_profile - system LED profile (defined per system class):
+ * @offset - offset for LED access in CPLD device
+ * @mask - mask for LED access in CPLD device
+ * @base_color - base color code
+ * @brightness - default brightness setting (on/off)
+ * @name - LED name
+**/
+struct mlxcpld_led_profile {
+ u8 offset;
+ u8 mask;
+ u8 base_color;
+ enum led_brightness brightness;
+ const char *name;
+};
+
+/**
+ * mlxcpld_led_pdata - system LED private data
+ * @pdev - platform device pointer
+ * @pled - LED class device instance
+ * @profile - system configuration profile
+ * @num_led_instances - number of LED instances
+ * @lock - device access lock
+**/
+struct mlxcpld_led_pdata {
+ struct platform_device *pdev;
+ struct mlxcpld_led_priv *pled;
+ struct mlxcpld_led_profile *profile;
+ int num_led_instances;
+ spinlock_t lock;
+};
+
+static struct mlxcpld_led_pdata *mlxcpld_led;
+
+/* Default profile fit the next Mellanox systems:
+ * "msx6710", "msx6720", "msb7700", "msn2700", "msx1410",
+ * "msn2410", "msb7800", "msn2740"
+ */
+static struct mlxcpld_led_profile mlxcpld_led_default_profile[] = {
+ {
+ 0x21, 0xf0, MLXCPLD_LED_GREEN_STATIC_ON, 1,
+ "mlxcpld:fan1:green",
+ },
+ {
+ 0x21, 0xf0, MLXCPLD_LED_RED_STATIC_ON, LED_OFF,
+ "mlxcpld:fan1:red",
+ },
+ {
+ 0x21, 0x0f, MLXCPLD_LED_GREEN_STATIC_ON, 1,
+ "mlxcpld:fan2:green",
+ },
+ {
+ 0x21, 0x0f, MLXCPLD_LED_RED_STATIC_ON, LED_OFF,
+ "mlxcpld:fan2:red",
+ },
+ {
+ 0x22, 0xf0, MLXCPLD_LED_GREEN_STATIC_ON, 1,
+ "mlxcpld:fan3:green",
+ },
+ {
+ 0x22, 0xf0, MLXCPLD_LED_RED_STATIC_ON, LED_OFF,
+ "mlxcpld:fan3:red",
+ },
+ {
+ 0x22, 0x0f, MLXCPLD_LED_GREEN_STATIC_ON, 1,
+ "mlxcpld:fan4:green",
+ },
+ {
+ 0x22, 0x0f, MLXCPLD_LED_RED_STATIC_ON, LED_OFF,
+ "mlxcpld:fan4:red",
+ },
+ {
+ 0x20, 0x0f, MLXCPLD_LED_GREEN_STATIC_ON, 1,
+ "mlxcpld:psu:green",
+ },
+ {
+ 0x20, 0x0f, MLXCPLD_LED_RED_STATIC_ON, LED_OFF,
+ "mlxcpld:psu:red",
+ },
+ {
+ 0x20, 0xf0, MLXCPLD_LED_GREEN_STATIC_ON, 1,
+ "mlxcpld:status:green",
+ },
+ {
+ 0x20, 0xf0, MLXCPLD_LED_RED_STATIC_ON, LED_OFF,
+ "mlxcpld:status:red",
+ },
+};
+
+/* Profile fit the Mellanox systems based on "msn2100" */
+static struct mlxcpld_led_profile mlxcpld_led_msn2100_profile[] = {
+ {
+ 0x21, 0xf0, MLXCPLD_LED_GREEN_STATIC_ON, 1,
+ "mlxcpld:fan:green",
+ },
+ {
+ 0x21, 0xf0, MLXCPLD_LED_RED_STATIC_ON, LED_OFF,
+ "mlxcpld:fan:red",
+ },
+ {
+ 0x23, 0xf0, MLXCPLD_LED_GREEN_STATIC_ON, 1,
+ "mlxcpld:psu1:green",
+ },
+ {
+ 0x23, 0xf0, MLXCPLD_LED_RED_STATIC_ON, LED_OFF,
+ "mlxcpld:psu1:red",
+ },
+ {
+ 0x23, 0x0f, MLXCPLD_LED_GREEN_STATIC_ON, 1,
+ "mlxcpld:psu2:green",
+ },
+ {
+ 0x23, 0x0f, MLXCPLD_LED_RED_STATIC_ON, LED_OFF,
+ "mlxcpld:psu2:red",
+ },
+ {
+ 0x20, 0xf0, MLXCPLD_LED_GREEN_STATIC_ON, 1,
+ "mlxcpld:status:green",
+ },
+ {
+ 0x20, 0xf0, MLXCPLD_LED_RED_STATIC_ON, LED_OFF,
+ "mlxcpld:status:red",
+ },
+ {
+ 0x24, 0xf0, MLXCPLD_LED_GREEN_STATIC_ON, LED_OFF,
+ "mlxcpld:uid:blue",
+ },
+};
+
+enum mlxcpld_led_platform_types {
+ MLXCPLD_LED_PLATFORM_DEFAULT,
+ MLXCPLD_LED_PLATFORM_MSN2100,
+};
+
+static const char *mlx_product_names[] = {
+ "DEFAULT",
+ "MSN2100",
+};
+
+static enum
+mlxcpld_led_platform_types mlxcpld_led_platform_check_sys_type(void)
+{
+ const char *mlx_product_name;
+ int i;
+
+ mlx_product_name = dmi_get_system_info(DMI_PRODUCT_NAME);
+ if (!mlx_product_name)
+ return MLXCPLD_LED_PLATFORM_DEFAULT;
+
+ for (i = 1; i < ARRAY_SIZE(mlx_product_names); i++) {
+ if (strstr(mlx_product_name, mlx_product_names[i]))
+ return i;
+ }
+
+ return MLXCPLD_LED_PLATFORM_DEFAULT;
+}
+
+static void mlxcpld_led_bus_access_func(u16 base, u8 offset, u8 rw_flag,
+ u8 *data)
+{
+ u32 addr = base + offset;
+
+ if (rw_flag == 0)
+ outb(*data, addr);
+ else
+ *data = inb(addr);
+}
+
+static void mlxcpld_led_store_hw(u8 mask, u8 off, u8 vset)
+{
+ u8 nib, val;
+
+ /*
+ * Each LED is controlled through low or high nibble of the relevant
+ * CPLD register. Register offset is specified by off parameter.
+ * Parameter vset provides color code: 0x0 for off, 0x5 for solid red,
+ * 0x6 for 3Hz blink red, 0xd for solid green, 0xe for 3Hz blink
+ * green.
+ * Parameter mask specifies which nibble is used for specific LED: mask
+ * 0xf0 - lower nibble is to be used (bits from 0 to 3), mask 0x0f -
+ * higher nibble (bits from 4 to 7).
+ */
+ spin_lock(&mlxcpld_led->lock);
+ mlxcpld_led_bus_access_func(MLXPLAT_CPLD_LPC_REG_BASE_ADRR, off, 1,
+ &val);
+ nib = (mask == 0xf0) ? vset : (vset << 4);
+ val = (val & mask) | nib;
+ mlxcpld_led_bus_access_func(MLXPLAT_CPLD_LPC_REG_BASE_ADRR, off, 0,
+ &val);
+ spin_unlock(&mlxcpld_led->lock);
+}
+
+static void mlxcpld_led_brightness_set(struct led_classdev *led,
+ enum led_brightness value)
+{
+ struct mlxcpld_led_priv *pled = cdev_to_priv(led);
+
+ if (value) {
+ mlxcpld_led_store_hw(pled->param.mask, pled->param.offset,
+ pled->param.base_color);
+ return;
+ }
+
+ mlxcpld_led_store_hw(pled->param.mask, pled->param.offset,
+ MLXCPLD_LED_IS_OFF);
+}
+
+static int mlxcpld_led_blink_set(struct led_classdev *led,
+ unsigned long *delay_on,
+ unsigned long *delay_off)
+{
+ struct mlxcpld_led_priv *pled = cdev_to_priv(led);
+
+ /*
+ * HW supports two types of blinking: full (6Hz) and half (3Hz).
+ * For delay on/off zero default setting 3Hz is used.
+ */
+ if (!(*delay_on == 0 && *delay_off == 0) &&
+ !(*delay_on == MLXCPLD_LED_BLINK_3HZ &&
+ *delay_off == MLXCPLD_LED_BLINK_3HZ) &&
+ !(*delay_on == MLXCPLD_LED_BLINK_6HZ &&
+ *delay_off == MLXCPLD_LED_BLINK_6HZ))
+ return -EINVAL;
+
+ if (*delay_on == MLXCPLD_LED_BLINK_6HZ)
+ mlxcpld_led_store_hw(pled->param.mask, pled->param.offset,
+ pled->param.base_color +
+ MLXCPLD_LED_OFFSET_FULL);
+ else
+ mlxcpld_led_store_hw(pled->param.mask, pled->param.offset,
+ pled->param.base_color +
+ MLXCPLD_LED_OFFSET_HALF);
+
+ return 0;
+}
+
+static int mlxcpld_led_config(struct device *dev,
+ struct mlxcpld_led_pdata *cpld)
+{
+ int i;
+ int err;
+
+ cpld->pled = devm_kzalloc(dev, sizeof(struct mlxcpld_led_priv) *
+ cpld->num_led_instances, GFP_KERNEL);
+ if (!cpld->pled)
+ return -ENOMEM;
+
+ for (i = 0; i < cpld->num_led_instances; i++) {
+ cpld->pled[i].cdev.name = cpld->profile[i].name;
+ cpld->pled[i].cdev.brightness = cpld->profile[i].brightness;
+ cpld->pled[i].cdev.max_brightness = 1;
+ cpld->pled[i].cdev.brightness_set = mlxcpld_led_brightness_set;
+ cpld->pled[i].cdev.blink_set = mlxcpld_led_blink_set;
+ cpld->pled[i].cdev.flags = LED_CORE_SUSPENDRESUME;
+ err = devm_led_classdev_register(dev, &cpld->pled[i].cdev);
+ if (err)
+ return err;
+
+ cpld->pled[i].param.offset = mlxcpld_led->profile[i].offset;
+ cpld->pled[i].param.mask = mlxcpld_led->profile[i].mask;
+ cpld->pled[i].param.base_color =
+ mlxcpld_led->profile[i].base_color;
+
+ if (mlxcpld_led->profile[i].brightness)
+ mlxcpld_led_brightness_set(&cpld->pled[i].cdev,
+ mlxcpld_led->profile[i].brightness);
+ }
+
+ return 0;
+}
+
+static int __init mlxcpld_led_probe(struct platform_device *pdev)
+{
+ enum mlxcpld_led_platform_types mlxcpld_led_plat =
+ mlxcpld_led_platform_check_sys_type();
+
+ mlxcpld_led = devm_kzalloc(&pdev->dev, sizeof(*mlxcpld_led),
+ GFP_KERNEL);
+ if (!mlxcpld_led)
+ return -ENOMEM;
+
+ mlxcpld_led->pdev = pdev;
+
+ switch (mlxcpld_led_plat) {
+ case MLXCPLD_LED_PLATFORM_MSN2100:
+ mlxcpld_led->profile = mlxcpld_led_msn2100_profile;
+ mlxcpld_led->num_led_instances =
+ ARRAY_SIZE(mlxcpld_led_msn2100_profile);
+ break;
+
+ default:
+ mlxcpld_led->profile = mlxcpld_led_default_profile;
+ mlxcpld_led->num_led_instances =
+ ARRAY_SIZE(mlxcpld_led_default_profile);
+ break;
+ }
+
+ spin_lock_init(&mlxcpld_led->lock);
+
+ return mlxcpld_led_config(&pdev->dev, mlxcpld_led);
+}
+
+static struct platform_driver mlxcpld_led_driver = {
+ .driver = {
+ .name = KBUILD_MODNAME,
+ },
+};
+
+static int __init mlxcpld_led_init(void)
+{
+ struct platform_device *pdev;
+ int err;
+
+ pdev = platform_device_register_simple(KBUILD_MODNAME, -1, NULL, 0);
+ if (IS_ERR(pdev)) {
+ pr_err("Device allocation failed\n");
+ return PTR_ERR(pdev);
+ }
+
+ err = platform_driver_probe(&mlxcpld_led_driver, mlxcpld_led_probe);
+ if (err) {
+ pr_err("Probe platform driver failed\n");
+ platform_device_unregister(pdev);
+ }
+
+ return err;
+}
+
+static void __exit mlxcpld_led_exit(void)
+{
+ platform_device_unregister(mlxcpld_led->pdev);
+ platform_driver_unregister(&mlxcpld_led_driver);
+}
+
+module_init(mlxcpld_led_init);
+module_exit(mlxcpld_led_exit);
+
+MODULE_AUTHOR("Vadim Pasternak <vadimp@mellanox.com>");
+MODULE_DESCRIPTION("Mellanox board LED driver");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:leds_mlxcpld");
diff --git a/drivers/leds/leds-pm8058.c b/drivers/leds/leds-pm8058.c
new file mode 100644
index 000000000000..a52674327857
--- /dev/null
+++ b/drivers/leds/leds-pm8058.c
@@ -0,0 +1,191 @@
+/* Copyright (c) 2010, 2011, 2016 The Linux Foundation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only 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/leds.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/pm.h>
+#include <linux/regmap.h>
+
+#define PM8058_LED_TYPE_COMMON 0x00
+#define PM8058_LED_TYPE_KEYPAD 0x01
+#define PM8058_LED_TYPE_FLASH 0x02
+
+#define PM8058_LED_TYPE_COMMON_MASK 0xf8
+#define PM8058_LED_TYPE_KEYPAD_MASK 0xf0
+#define PM8058_LED_TYPE_COMMON_SHIFT 3
+#define PM8058_LED_TYPE_KEYPAD_SHIFT 4
+
+struct pm8058_led {
+ struct regmap *map;
+ u32 reg;
+ u32 ledtype;
+ struct led_classdev cdev;
+};
+
+static void pm8058_led_set(struct led_classdev *cled,
+ enum led_brightness value)
+{
+ struct pm8058_led *led;
+ int ret = 0;
+ unsigned int mask = 0;
+ unsigned int val = 0;
+
+ led = container_of(cled, struct pm8058_led, cdev);
+ switch (led->ledtype) {
+ case PM8058_LED_TYPE_COMMON:
+ mask = PM8058_LED_TYPE_COMMON_MASK;
+ val = value << PM8058_LED_TYPE_COMMON_SHIFT;
+ break;
+ case PM8058_LED_TYPE_KEYPAD:
+ case PM8058_LED_TYPE_FLASH:
+ mask = PM8058_LED_TYPE_KEYPAD_MASK;
+ val = value << PM8058_LED_TYPE_KEYPAD_SHIFT;
+ break;
+ default:
+ break;
+ }
+
+ ret = regmap_update_bits(led->map, led->reg, mask, val);
+ if (ret)
+ pr_err("Failed to set LED brightness\n");
+}
+
+static enum led_brightness pm8058_led_get(struct led_classdev *cled)
+{
+ struct pm8058_led *led;
+ int ret;
+ unsigned int val;
+
+ led = container_of(cled, struct pm8058_led, cdev);
+
+ ret = regmap_read(led->map, led->reg, &val);
+ if (ret) {
+ pr_err("Failed to get LED brightness\n");
+ return LED_OFF;
+ }
+
+ switch (led->ledtype) {
+ case PM8058_LED_TYPE_COMMON:
+ val &= PM8058_LED_TYPE_COMMON_MASK;
+ val >>= PM8058_LED_TYPE_COMMON_SHIFT;
+ break;
+ case PM8058_LED_TYPE_KEYPAD:
+ case PM8058_LED_TYPE_FLASH:
+ val &= PM8058_LED_TYPE_KEYPAD_MASK;
+ val >>= PM8058_LED_TYPE_KEYPAD_SHIFT;
+ break;
+ default:
+ val = LED_OFF;
+ break;
+ }
+
+ return val;
+}
+
+static int pm8058_led_probe(struct platform_device *pdev)
+{
+ struct pm8058_led *led;
+ struct device_node *np = pdev->dev.of_node;
+ int ret;
+ struct regmap *map;
+ const char *state;
+ enum led_brightness maxbright;
+
+ led = devm_kzalloc(&pdev->dev, sizeof(*led), GFP_KERNEL);
+ if (!led)
+ return -ENOMEM;
+
+ led->ledtype = (u32)of_device_get_match_data(&pdev->dev);
+
+ map = dev_get_regmap(pdev->dev.parent, NULL);
+ if (!map) {
+ dev_err(&pdev->dev, "Parent regmap unavailable.\n");
+ return -ENXIO;
+ }
+ led->map = map;
+
+ ret = of_property_read_u32(np, "reg", &led->reg);
+ if (ret) {
+ dev_err(&pdev->dev, "no register offset specified\n");
+ return -EINVAL;
+ }
+
+ /* Use label else node name */
+ led->cdev.name = of_get_property(np, "label", NULL) ? : np->name;
+ led->cdev.default_trigger =
+ of_get_property(np, "linux,default-trigger", NULL);
+ led->cdev.brightness_set = pm8058_led_set;
+ led->cdev.brightness_get = pm8058_led_get;
+ if (led->ledtype == PM8058_LED_TYPE_COMMON)
+ maxbright = 31; /* 5 bits */
+ else
+ maxbright = 15; /* 4 bits */
+ led->cdev.max_brightness = maxbright;
+
+ state = of_get_property(np, "default-state", NULL);
+ if (state) {
+ if (!strcmp(state, "keep")) {
+ led->cdev.brightness = pm8058_led_get(&led->cdev);
+ } else if (!strcmp(state, "on")) {
+ led->cdev.brightness = maxbright;
+ pm8058_led_set(&led->cdev, maxbright);
+ } else {
+ led->cdev.brightness = LED_OFF;
+ pm8058_led_set(&led->cdev, LED_OFF);
+ }
+ }
+
+ if (led->ledtype == PM8058_LED_TYPE_KEYPAD ||
+ led->ledtype == PM8058_LED_TYPE_FLASH)
+ led->cdev.flags = LED_CORE_SUSPENDRESUME;
+
+ ret = devm_led_classdev_register(&pdev->dev, &led->cdev);
+ if (ret) {
+ dev_err(&pdev->dev, "unable to register led \"%s\"\n",
+ led->cdev.name);
+ return ret;
+ }
+
+ return 0;
+}
+
+static const struct of_device_id pm8058_leds_id_table[] = {
+ {
+ .compatible = "qcom,pm8058-led",
+ .data = (void *)PM8058_LED_TYPE_COMMON
+ },
+ {
+ .compatible = "qcom,pm8058-keypad-led",
+ .data = (void *)PM8058_LED_TYPE_KEYPAD
+ },
+ {
+ .compatible = "qcom,pm8058-flash-led",
+ .data = (void *)PM8058_LED_TYPE_FLASH
+ },
+ { },
+};
+MODULE_DEVICE_TABLE(of, pm8058_leds_id_table);
+
+static struct platform_driver pm8058_led_driver = {
+ .probe = pm8058_led_probe,
+ .driver = {
+ .name = "pm8058-leds",
+ .of_match_table = pm8058_leds_id_table,
+ },
+};
+module_platform_driver(pm8058_led_driver);
+
+MODULE_DESCRIPTION("PM8058 LEDs driver");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:pm8058-leds");