diff --git a/Documentation/devicetree/bindings/leds/common.yaml b/Documentation/devicetree/bindings/leds/common.yaml
index 697102707703a..328952d7acbbc 100644
--- a/Documentation/devicetree/bindings/leds/common.yaml
+++ b/Documentation/devicetree/bindings/leds/common.yaml
@@ -185,9 +185,11 @@ examples:
};
};
- led-controller@0 {
+ - |
+ #include <dt-bindings/leds/common.h>
+
+ led-controller {
compatible = "maxim,max77693-led";
- reg = <0 0x100>;
led {
function = LED_FUNCTION_FLASH;
@@ -199,6 +201,9 @@ examples:
};
};
+ - |
+ #include <dt-bindings/leds/common.h>
+
i2c {
#address-cells = <1>;
#size-cells = <0>;
diff --git a/Documentation/devicetree/bindings/vendor-prefixes.yaml b/Documentation/devicetree/bindings/vendor-prefixes.yaml
index c57367f582f4a..1eebff4842e0b 100644
--- a/Documentation/devicetree/bindings/vendor-prefixes.yaml
+++ b/Documentation/devicetree/bindings/vendor-prefixes.yaml
@@ -876,6 +876,8 @@ patternProperties:
description: NXP Semiconductors
"^oceanic,.*":
description: Oceanic Systems (UK) Ltd.
+ "^ocs,.*":
+ description: Orient Chip Technology Co., Ltd.
"^oct,.*":
description: Octavo Systems LLC
"^okaya,.*":
diff --git a/drivers/leds/flash/leds-sgm3140.c b/drivers/leds/flash/leds-sgm3140.c
index f4f831570f11c..d3a30ad94ac46 100644
--- a/drivers/leds/flash/leds-sgm3140.c
+++ b/drivers/leds/flash/leds-sgm3140.c
@@ -290,6 +290,7 @@ static int sgm3140_remove(struct platform_device *pdev)
}
static const struct of_device_id sgm3140_dt_match[] = {
+ { .compatible = "ocs,ocp8110" },
{ .compatible = "sgmicro,sgm3140" },
{ /* sentinel */ }
};
diff --git a/drivers/leds/leds-lm3692x.c b/drivers/leds/leds-lm3692x.c
index afe6fb297855f..87cd24ce3f955 100644
--- a/drivers/leds/leds-lm3692x.c
+++ b/drivers/leds/leds-lm3692x.c
@@ -494,11 +494,8 @@ static int lm3692x_probe(struct i2c_client *client,
static int lm3692x_remove(struct i2c_client *client)
{
struct lm3692x_led *led = i2c_get_clientdata(client);
- int ret;
- ret = lm3692x_leds_disable(led);
- if (ret)
- return ret;
+ lm3692x_leds_disable(led);
mutex_destroy(&led->lock);
return 0;
diff --git a/drivers/leds/leds-pca955x.c b/drivers/leds/leds-pca955x.c
index a6b5699aeae4f..81aaf21212d7d 100644
--- a/drivers/leds/leds-pca955x.c
+++ b/drivers/leds/leds-pca955x.c
@@ -37,6 +37,7 @@
* bits the chip supports.
*/
+#include <linux/bitops.h>
#include <linux/ctype.h>
#include <linux/delay.h>
#include <linux/err.h>
@@ -118,6 +119,7 @@ struct pca955x {
struct pca955x_led *leds;
struct pca955x_chipdef *chipdef;
struct i2c_client *client;
+ unsigned long active_pins;
#ifdef CONFIG_LEDS_PCA955X_GPIO
struct gpio_chip gpio;
#endif
@@ -360,12 +362,15 @@ static int pca955x_read_input(struct i2c_client *client, int n, u8 *val)
static int pca955x_gpio_request_pin(struct gpio_chip *gc, unsigned int offset)
{
struct pca955x *pca955x = gpiochip_get_data(gc);
- struct pca955x_led *led = &pca955x->leds[offset];
- if (led->type == PCA955X_TYPE_GPIO)
- return 0;
+ return test_and_set_bit(offset, &pca955x->active_pins) ? -EBUSY : 0;
+}
+
+static void pca955x_gpio_free_pin(struct gpio_chip *gc, unsigned int offset)
+{
+ struct pca955x *pca955x = gpiochip_get_data(gc);
- return -EBUSY;
+ clear_bit(offset, &pca955x->active_pins);
}
static int pca955x_set_value(struct gpio_chip *gc, unsigned int offset,
@@ -424,7 +429,7 @@ pca955x_get_pdata(struct i2c_client *client, struct pca955x_chipdef *chip)
int count;
count = device_get_child_node_count(&client->dev);
- if (!count || count > chip->bits)
+ if (count > chip->bits)
return ERR_PTR(-ENODEV);
pdata = devm_kzalloc(&client->dev, sizeof(*pdata), GFP_KERNEL);
@@ -489,7 +494,6 @@ static int pca955x_probe(struct i2c_client *client)
struct i2c_adapter *adapter;
int i, err;
struct pca955x_platform_data *pdata;
- int ngpios = 0;
bool set_default_label = false;
bool keep_pwm = false;
char default_label[8];
@@ -567,9 +571,7 @@ static int pca955x_probe(struct i2c_client *client)
switch (pca955x_led->type) {
case PCA955X_TYPE_NONE:
- break;
case PCA955X_TYPE_GPIO:
- ngpios++;
break;
case PCA955X_TYPE_LED:
led = &pca955x_led->led_cdev;
@@ -613,6 +615,8 @@ static int pca955x_probe(struct i2c_client *client)
if (err)
return err;
+ set_bit(i, &pca955x->active_pins);
+
/*
* For default-state == "keep", let the core update the
* brightness from the hardware, then check the
@@ -650,31 +654,30 @@ static int pca955x_probe(struct i2c_client *client)
return err;
#ifdef CONFIG_LEDS_PCA955X_GPIO
- if (ngpios) {
- pca955x->gpio.label = "gpio-pca955x";
- pca955x->gpio.direction_input = pca955x_gpio_direction_input;
- pca955x->gpio.direction_output = pca955x_gpio_direction_output;
- pca955x->gpio.set = pca955x_gpio_set_value;
- pca955x->gpio.get = pca955x_gpio_get_value;
- pca955x->gpio.request = pca955x_gpio_request_pin;
- pca955x->gpio.can_sleep = 1;
- pca955x->gpio.base = -1;
- pca955x->gpio.ngpio = ngpios;
- pca955x->gpio.parent = &client->dev;
- pca955x->gpio.owner = THIS_MODULE;
-
- err = devm_gpiochip_add_data(&client->dev, &pca955x->gpio,
- pca955x);
- if (err) {
- /* Use data->gpio.dev as a flag for freeing gpiochip */
- pca955x->gpio.parent = NULL;
- dev_warn(&client->dev, "could not add gpiochip\n");
- return err;
- }
- dev_info(&client->dev, "gpios %i...%i\n",
- pca955x->gpio.base, pca955x->gpio.base +
- pca955x->gpio.ngpio - 1);
+ pca955x->gpio.label = "gpio-pca955x";
+ pca955x->gpio.direction_input = pca955x_gpio_direction_input;
+ pca955x->gpio.direction_output = pca955x_gpio_direction_output;
+ pca955x->gpio.set = pca955x_gpio_set_value;
+ pca955x->gpio.get = pca955x_gpio_get_value;
+ pca955x->gpio.request = pca955x_gpio_request_pin;
+ pca955x->gpio.free = pca955x_gpio_free_pin;
+ pca955x->gpio.can_sleep = 1;
+ pca955x->gpio.base = -1;
+ pca955x->gpio.ngpio = chip->bits;
+ pca955x->gpio.parent = &client->dev;
+ pca955x->gpio.owner = THIS_MODULE;
+
+ err = devm_gpiochip_add_data(&client->dev, &pca955x->gpio,
+ pca955x);
+ if (err) {
+ /* Use data->gpio.dev as a flag for freeing gpiochip */
+ pca955x->gpio.parent = NULL;
+ dev_warn(&client->dev, "could not add gpiochip\n");
+ return err;
}
+ dev_info(&client->dev, "gpios %i...%i\n",
+ pca955x->gpio.base, pca955x->gpio.base +
+ pca955x->gpio.ngpio - 1);
#endif
return 0;
diff --git a/drivers/leds/simple/simatic-ipc-leds.c b/drivers/leds/simple/simatic-ipc-leds.c
index ff2c96e73241c..078d43f5ba387 100644
--- a/drivers/leds/simple/simatic-ipc-leds.c
+++ b/drivers/leds/simple/simatic-ipc-leds.c
@@ -39,9 +39,9 @@ static struct simatic_ipc_led simatic_ipc_leds_io[] = {
};
/* the actual start will be discovered with PCI, 0 is a placeholder */
-struct resource simatic_ipc_led_mem_res = DEFINE_RES_MEM_NAMED(0, SZ_4K, KBUILD_MODNAME);
+static struct resource simatic_ipc_led_mem_res = DEFINE_RES_MEM_NAMED(0, SZ_4K, KBUILD_MODNAME);
-static void *simatic_ipc_led_memory;
+static void __iomem *simatic_ipc_led_memory;
static struct simatic_ipc_led simatic_ipc_leds_mem[] = {
{0x500 + 0x1A0, "red:" LED_FUNCTION_STATUS "-1"},
@@ -92,21 +92,22 @@ static void simatic_ipc_led_set_mem(struct led_classdev *led_cd,
enum led_brightness brightness)
{
struct simatic_ipc_led *led = cdev_to_led(led_cd);
+ void __iomem *reg = simatic_ipc_led_memory + led->value;
+ u32 val;
- u32 *p;
-
- p = simatic_ipc_led_memory + led->value;
- *p = (*p & ~1) | (brightness == LED_OFF);
+ val = readl(reg);
+ val = (val & ~1) | (brightness == LED_OFF);
+ writel(val, reg);
}
static enum led_brightness simatic_ipc_led_get_mem(struct led_classdev *led_cd)
{
struct simatic_ipc_led *led = cdev_to_led(led_cd);
+ void __iomem *reg = simatic_ipc_led_memory + led->value;
+ u32 val;
- u32 *p;
-
- p = simatic_ipc_led_memory + led->value;
- return (*p & 1) ? LED_OFF : led_cd->max_brightness;
+ val = readl(reg);
+ return (val & 1) ? LED_OFF : led_cd->max_brightness;
}
static int simatic_ipc_leds_probe(struct platform_device *pdev)
@@ -116,8 +117,9 @@ static int simatic_ipc_leds_probe(struct platform_device *pdev)
struct simatic_ipc_led *ipcled;
struct led_classdev *cdev;
struct resource *res;
+ void __iomem *reg;
int err, type;
- u32 *p;
+ u32 val;
switch (plat->devmode) {
case SIMATIC_IPC_DEVICE_227D:
@@ -157,11 +159,13 @@ static int simatic_ipc_leds_probe(struct platform_device *pdev)
return PTR_ERR(simatic_ipc_led_memory);
/* initialize power/watchdog LED */
- p = simatic_ipc_led_memory + 0x500 + 0x1D8; /* PM_WDT_OUT */
- *p = (*p & ~1);
- p = simatic_ipc_led_memory + 0x500 + 0x1C0; /* PM_BIOS_BOOT_N */
- *p = (*p | 1);
+ reg = simatic_ipc_led_memory + 0x500 + 0x1D8; /* PM_WDT_OUT */
+ val = readl(reg);
+ writel(val & ~1, reg);
+ reg = simatic_ipc_led_memory + 0x500 + 0x1C0; /* PM_BIOS_BOOT_N */
+ val = readl(reg);
+ writel(val | 1, reg);
break;
default:
return -ENODEV;