[PATCH 0/2] Add RT5033 Flash LED driver

[PATCH 0/2] Add RT5033 Flash LED driver

[Ingi Kim]

This patch adds ktd2692 Flash LED driver with LED Flash class

Ingi Kim (2):
  leds: rt5033: add DT binding for RT5033
  leds: rt5033: Add RT5033 Flash led device driver

 .../devicetree/bindings/leds/leds-rt5033.txt       |  38 ++++
 drivers/leds/Kconfig                               |   8 +
 drivers/leds/Makefile                              |   1 +
 drivers/leds/leds-rt5033.c                         | 222 +++++++++++++++++++++
 drivers/mfd/rt5033.c                               |   3 +
 include/linux/mfd/rt5033-private.h                 |  67 ++++++-
 include/linux/mfd/rt5033.h                         |  27 ++-
 7 files changed, 355 insertions(+), 11 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/leds/leds-rt5033.txt
 create mode 100644 drivers/leds/leds-rt5033.c

-- 
2.0.5

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[PATCH 0/2] Add RT5033 Flash LED driver

[Ingi Kim]

This patch adds ktd2692 Flash LED driver with LED Flash class

Ingi Kim (2):
  leds: rt5033: add DT binding for RT5033
  leds: rt5033: Add RT5033 Flash led device driver

 .../devicetree/bindings/leds/leds-rt5033.txt       |  38 ++++
 drivers/leds/Kconfig                               |   8 +
 drivers/leds/Makefile                              |   1 +
 drivers/leds/leds-rt5033.c                         | 222 +++++++++++++++++++++
 drivers/mfd/rt5033.c                               |   3 +
 include/linux/mfd/rt5033-private.h                 |  67 ++++++-
 include/linux/mfd/rt5033.h                         |  27 ++-
 7 files changed, 355 insertions(+), 11 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/leds/leds-rt5033.txt
 create mode 100644 drivers/leds/leds-rt5033.c

-- 
2.0.5

[PATCH 1/2] leds: rt5033: add DT binding for RT5033

[Ingi Kim]

This patch adds the device tree bindings for RT5033 flash LEDs.

Signed-off-by: Ingi Kim <ingi2.kim-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
---
 .../devicetree/bindings/leds/leds-rt5033.txt       | 38 ++++++++++++++++++++++
 1 file changed, 38 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/leds/leds-rt5033.txt

diff --git a/Documentation/devicetree/bindings/leds/leds-rt5033.txt b/Documentation/devicetree/bindings/leds/leds-rt5033.txt
new file mode 100644
index 0000000..2ef7bdc
--- /dev/null
+++ b/Documentation/devicetree/bindings/leds/leds-rt5033.txt
@@ -0,0 +1,38 @@
+* Richtek Technology Corporation - RT5033 Flash LED Driver
+
+The RT5033 Flash LED Circuit is designed for one or two LEDs driving
+for torch and strobe applications, it provides an I2C software command
+to trigger the torch and strobe operation.
+
+Required properties:
+- compatible : Must be "richtek,rt5033-led".
+
+A discrete LED element connected to the device must be represented by a child
+node - see Documentation/devicetree/bindings/leds/common.txt.
+
+Required properties of the LED child node:
+  See Documentation/devicetree/bindings/leds/common.txt
+- led-max-microamp : Minimum Threshold for Timer protection
+  is defined internally (Maximum 200mA).
+- flash-max-microamp : Flash LED maximum current
+- flash-max-timeout-us : Flash LED maximum timeout
+
+Optional properties of the LED child node:
+- label : see Documentation/devicetree/bindings/leds/common.txt
+
+Example:
+
+rt5033 {
+	compatible = "richtek,rt5033";
+
+	led {
+		compatible = "richtek,rt5033-led";
+
+		flash-led {
+			label = "rt5033-flash";
+			led-max-microamp = <200000>;
+			flash-max-microamp = <800000>;
+			flash-max-timeout-us = <1216000>;
+		};
+	};
+}
-- 
2.0.5

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[PATCH 1/2] leds: rt5033: add DT binding for RT5033

[Ingi Kim]

This patch adds the device tree bindings for RT5033 flash LEDs.

Signed-off-by: Ingi Kim <ingi2.kim@samsung.com>
---
 .../devicetree/bindings/leds/leds-rt5033.txt       | 38 ++++++++++++++++++++++
 1 file changed, 38 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/leds/leds-rt5033.txt

diff --git a/Documentation/devicetree/bindings/leds/leds-rt5033.txt b/Documentation/devicetree/bindings/leds/leds-rt5033.txt
new file mode 100644
index 0000000..2ef7bdc
--- /dev/null
+++ b/Documentation/devicetree/bindings/leds/leds-rt5033.txt
@@ -0,0 +1,38 @@
+* Richtek Technology Corporation - RT5033 Flash LED Driver
+
+The RT5033 Flash LED Circuit is designed for one or two LEDs driving
+for torch and strobe applications, it provides an I2C software command
+to trigger the torch and strobe operation.
+
+Required properties:
+- compatible : Must be "richtek,rt5033-led".
+
+A discrete LED element connected to the device must be represented by a child
+node - see Documentation/devicetree/bindings/leds/common.txt.
+
+Required properties of the LED child node:
+  See Documentation/devicetree/bindings/leds/common.txt
+- led-max-microamp : Minimum Threshold for Timer protection
+  is defined internally (Maximum 200mA).
+- flash-max-microamp : Flash LED maximum current
+- flash-max-timeout-us : Flash LED maximum timeout
+
+Optional properties of the LED child node:
+- label : see Documentation/devicetree/bindings/leds/common.txt
+
+Example:
+
+rt5033 {
+	compatible = "richtek,rt5033";
+
+	led {
+		compatible = "richtek,rt5033-led";
+
+		flash-led {
+			label = "rt5033-flash";
+			led-max-microamp = <200000>;
+			flash-max-microamp = <800000>;
+			flash-max-timeout-us = <1216000>;
+		};
+	};
+}
-- 
2.0.5

[PATCH 2/2] leds: rt5033: Add RT5033 Flash led device driver

[Ingi Kim]

This patch adds device driver of Richtek RT5033 PMIC.
The driver supports a current regulated output to drive
white LEDs for camera flash.

Signed-off-by: Ingi Kim <ingi2.kim@samsung.com>
---
 drivers/leds/Kconfig               |   8 ++
 drivers/leds/Makefile              |   1 +
 drivers/leds/leds-rt5033.c         | 222 +++++++++++++++++++++++++++++++++++++
 drivers/mfd/rt5033.c               |   3 +
 include/linux/mfd/rt5033-private.h |  67 +++++++++--
 include/linux/mfd/rt5033.h         |  27 ++++-
 6 files changed, 317 insertions(+), 11 deletions(-)
 create mode 100644 drivers/leds/leds-rt5033.c

diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig
index 42990f2..29613e3 100644
--- a/drivers/leds/Kconfig
+++ b/drivers/leds/Kconfig
@@ -345,6 +345,14 @@ config LEDS_PCA963X
 	  LED driver chip accessed via the I2C bus. Supported
 	  devices include PCA9633 and PCA9634
 
+config LEDS_RT5033
+	tristate "LED support for RT5033 PMIC"
+	depends on LEDS_CLASS_FLASH && OF
+	depends on MFD_RT5033
+	help
+	  This option enables support for on-chip LED driver on
+	  RT5033 PMIC.
+
 config LEDS_WM831X_STATUS
 	tristate "LED support for status LEDs on WM831x PMICs"
 	depends on LEDS_CLASS
diff --git a/drivers/leds/Makefile b/drivers/leds/Makefile
index b503f92..bcc4d93 100644
--- a/drivers/leds/Makefile
+++ b/drivers/leds/Makefile
@@ -23,6 +23,7 @@ obj-$(CONFIG_LEDS_COBALT_QUBE)		+= leds-cobalt-qube.o
 obj-$(CONFIG_LEDS_COBALT_RAQ)		+= leds-cobalt-raq.o
 obj-$(CONFIG_LEDS_SUNFIRE)		+= leds-sunfire.o
 obj-$(CONFIG_LEDS_PCA9532)		+= leds-pca9532.o
+obj-$(CONFIG_LEDS_RT5033)		+= leds-rt5033.o
 obj-$(CONFIG_LEDS_GPIO_REGISTER)	+= leds-gpio-register.o
 obj-$(CONFIG_LEDS_GPIO)			+= leds-gpio.o
 obj-$(CONFIG_LEDS_LP3944)		+= leds-lp3944.o
diff --git a/drivers/leds/leds-rt5033.c b/drivers/leds/leds-rt5033.c
new file mode 100644
index 0000000..b154676
--- /dev/null
+++ b/drivers/leds/leds-rt5033.c
@@ -0,0 +1,222 @@
+/*
+ * led driver for RT5033
+ *
+ * Copyright (C) 2015 Samsung Electronics, Co., Ltd.
+ * Ingi Kim <ingi2.kim@samsung.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.
+ *
+ */
+
+#include <linux/mfd/rt5033.h>
+#include <linux/mfd/rt5033-private.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+
+#define RT5033_LED_FLASH_TIMEOUT_MIN		64000
+#define RT5033_LED_FLASH_TIMEOUT_STEPS		32000
+#define RT5033_LED_TORCH_CURRENT_LEVEL_MAX	16
+
+/* Macro for getting offset of flash timeout */
+#define GET_TIMEOUT_OFFSET(tm, step)	((tm) / (step) - 2)
+
+static struct rt5033_led *flcdev_to_led(
+				struct led_classdev_flash *fled_cdev)
+{
+	return container_of(fled_cdev, struct rt5033_led, fled_cdev);
+}
+
+static int rt5033_led_brightness_set(struct led_classdev *led_cdev,
+					enum led_brightness brightness)
+{
+	struct led_classdev_flash *fled_cdev = lcdev_to_flcdev(led_cdev);
+	struct rt5033_led *led = flcdev_to_led(fled_cdev);
+
+	if (!brightness) {
+		regmap_update_bits(led->regmap, RT5033_REG_FL_FUNCTION2,
+				   RT5033_FL_CTRL2_MASK, 0x0);
+	} else {
+		regmap_update_bits(led->regmap, RT5033_REG_FL_FUNCTION1,
+				   RT5033_FL_FUNC1_MASK, RT5033_FL_PINCTRL);
+		regmap_update_bits(led->regmap,	RT5033_REG_FL_CTRL1,
+				   RT5033_FL_CTRL1_MASK, (brightness-1) << 4);
+		regmap_update_bits(led->regmap, RT5033_REG_FL_FUNCTION2,
+				   RT5033_FL_CTRL2_MASK, RT5033_FL_ENFLED);
+	}
+
+	return 0;
+}
+
+static void rt5033_init_flash_timeout(struct rt5033_led *led)
+{
+	struct led_flash_setting *setting;
+
+	setting = &led->fled_cdev.timeout;
+	setting->min = RT5033_LED_FLASH_TIMEOUT_MIN;
+	setting->max = led->data->flash_max_timeout;
+	setting->step = RT5033_LED_FLASH_TIMEOUT_STEPS;
+	setting->val = led->data->flash_max_timeout;
+}
+
+static int rt5033_led_parse_dt(struct rt5033_led *led, struct device *dev)
+{
+	struct device_node *np = dev->of_node;
+	struct device_node *child_node;
+	struct rt5033_led_config_data *data;
+	int ret = 0;
+
+	if (!np)
+		return -ENXIO;
+
+	data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
+	if (!data)
+		return -ENOMEM;
+
+	child_node = of_get_next_available_child(np, NULL);
+	if (!child_node) {
+		dev_err(dev, "DT child node isn't found\n");
+		return -EINVAL;
+	}
+
+	led->fled_cdev.led_cdev.name =
+		of_get_property(child_node, "label", NULL) ? : child_node->name;
+
+	ret = of_property_read_u32(child_node, "led-max-microamp",
+				   &data->torch_max_microamp);
+	if (ret) {
+		dev_err(dev, "failed to parse led-max-microamp\n");
+		return ret;
+	}
+
+	ret = of_property_read_u32(child_node, "flash-max-microamp",
+				   &data->flash_max_microamp);
+	if (ret) {
+		dev_err(dev, "failed to parse flash-max-microamp\n");
+		return ret;
+	}
+
+	ret = of_property_read_u32(child_node, "flash-max-timeout-us",
+				   &data->flash_max_timeout);
+	if (ret)
+		dev_err(dev, "failed to parse flash-max-timeout-us\n");
+
+	of_node_put(child_node);
+	led->data = data;
+
+	return ret;
+}
+
+static int rt5033_led_flash_timeout_set(struct led_classdev_flash *fled_cdev,
+					 u32 timeout)
+{
+	return 0;
+}
+
+static int rt5033_led_flash_strobe_set(struct led_classdev_flash *fled_cdev,
+					bool state)
+{
+	struct rt5033_led *led = flcdev_to_led(fled_cdev);
+	u32 flash_tm_reg;
+
+	regmap_update_bits(led->regmap,	RT5033_REG_FL_FUNCTION1,
+			   RT5033_FL_FUNC1_MASK, RT5033_FL_RESET);
+	fled_cdev->led_cdev.brightness = LED_OFF;
+
+	if (state) {
+		flash_tm_reg = GET_TIMEOUT_OFFSET(fled_cdev->timeout.val,
+						  fled_cdev->timeout.step);
+		regmap_update_bits(led->regmap,	RT5033_REG_FL_STROBE_CTRL2,
+				   RT5033_FL_STRBCTRL2_MASK, flash_tm_reg);
+		regmap_update_bits(led->regmap,	RT5033_REG_FL_FUNCTION1,
+				   RT5033_FL_FUNC1_MASK, RT5033_FL_STRB_SEL
+				   | RT5033_FL_PINCTRL);
+		regmap_update_bits(led->regmap,	RT5033_REG_FL_FUNCTION2,
+				   RT5033_FL_FUNC2_MASK, RT5033_FL_ENFLED
+				   | RT5033_FL_SREG_STRB);
+	}
+
+	return 0;
+}
+
+static const struct led_flash_ops flash_ops = {
+	.strobe_set = rt5033_led_flash_strobe_set,
+	.timeout_set = rt5033_led_flash_timeout_set,
+};
+
+static int rt5033_led_probe(struct platform_device *pdev)
+{
+	struct rt5033_dev *rt5033 = dev_get_drvdata(pdev->dev.parent);
+	struct rt5033_led *led;
+	struct led_classdev *led_cdev;
+	int ret;
+
+	led = devm_kzalloc(&pdev->dev, sizeof(*led), GFP_KERNEL);
+	if (!led)
+		return -ENOMEM;
+
+	platform_set_drvdata(pdev, led);
+	led->dev = &pdev->dev;
+	led->regmap = rt5033->regmap;
+
+	ret = rt5033_led_parse_dt(led, &pdev->dev);
+	if (ret)
+		return ret;
+
+	rt5033_init_flash_timeout(led);
+	led->fled_cdev.ops = &flash_ops;
+	led_cdev = &led->fled_cdev.led_cdev;
+
+	led_cdev->max_brightness = RT5033_LED_TORCH_CURRENT_LEVEL_MAX;
+	led_cdev->brightness_set_sync = rt5033_led_brightness_set;
+	led_cdev->flags |= LED_CORE_SUSPENDRESUME | LED_DEV_CAP_FLASH;
+
+	ret = led_classdev_flash_register(&pdev->dev, &led->fled_cdev);
+	if (ret < 0) {
+		dev_err(&pdev->dev, "can't register LED %s\n", led_cdev->name);
+		return ret;
+	}
+
+	regmap_update_bits(led->regmap,	RT5033_REG_FL_FUNCTION1,
+			   RT5033_FL_FUNC1_MASK, RT5033_FL_RESET);
+
+	return 0;
+}
+
+static int rt5033_led_remove(struct platform_device *pdev)
+{
+	struct rt5033_led *led = platform_get_drvdata(pdev);
+
+	led_classdev_flash_unregister(&led->fled_cdev);
+
+	return 0;
+}
+
+static const struct platform_device_id rt5033_led_id[] = {
+	{ "rt5033-led", },
+	{ /* sentinel */ },
+};
+MODULE_DEVICE_TABLE(platform, rt5033_led_id);
+
+static const struct of_device_id rt5033_led_match[] = {
+	{ .compatible = "richtek,rt5033-led", },
+	{ /* sentinel */ },
+};
+MODULE_DEVICE_TABLE(of, rt5033_led_match);
+
+static struct platform_driver rt5033_led_driver = {
+	.driver = {
+		.name = "rt5033-led",
+		.of_match_table = rt5033_led_match,
+	},
+	.probe		= rt5033_led_probe,
+	.id_table	= rt5033_led_id,
+	.remove		= rt5033_led_remove,
+};
+module_platform_driver(rt5033_led_driver);
+
+MODULE_AUTHOR("Ingi Kim <ingi2.kim@samsung.com>");
+MODULE_DESCRIPTION("Richtek RT5033 LED driver");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:rt5033-led");
diff --git a/drivers/mfd/rt5033.c b/drivers/mfd/rt5033.c
index d60f916..035421c 100644
--- a/drivers/mfd/rt5033.c
+++ b/drivers/mfd/rt5033.c
@@ -47,6 +47,9 @@ static const struct mfd_cell rt5033_devs[] = {
 	}, {
 		.name = "rt5033-battery",
 		.of_compatible = "richtek,rt5033-battery",
+	}, {
+		.name = "rt5033-led",
+		.of_compatible = "richtek,rt5033-led",
 	},
 };
 
diff --git a/include/linux/mfd/rt5033-private.h b/include/linux/mfd/rt5033-private.h
index 1b63fc2..21c3aff 100644
--- a/include/linux/mfd/rt5033-private.h
+++ b/include/linux/mfd/rt5033-private.h
@@ -25,15 +25,15 @@ enum rt5033_reg {
 	/* Reserved 0x09~0x18 */
 	RT5033_REG_RT_CTRL1		= 0x19,
 	/* Reserved 0x1A~0x20 */
-	RT5033_REG_FLED_FUNCTION1	= 0x21,
-	RT5033_REG_FLED_FUNCTION2	= 0x22,
-	RT5033_REG_FLED_STROBE_CTRL1	= 0x23,
-	RT5033_REG_FLED_STROBE_CTRL2	= 0x24,
-	RT5033_REG_FLED_CTRL1		= 0x25,
-	RT5033_REG_FLED_CTRL2		= 0x26,
-	RT5033_REG_FLED_CTRL3		= 0x27,
-	RT5033_REG_FLED_CTRL4		= 0x28,
-	RT5033_REG_FLED_CTRL5		= 0x29,
+	RT5033_REG_FL_FUNCTION1		= 0x21,
+	RT5033_REG_FL_FUNCTION2		= 0x22,
+	RT5033_REG_FL_STROBE_CTRL1	= 0x23,
+	RT5033_REG_FL_STROBE_CTRL2	= 0x24,
+	RT5033_REG_FL_CTRL1		= 0x25,
+	RT5033_REG_FL_CTRL2		= 0x26,
+	RT5033_REG_FL_CTRL3		= 0x27,
+	RT5033_REG_FL_CTRL4		= 0x28,
+	RT5033_REG_FL_CTRL5		= 0x29,
 	/* Reserved 0x2A~0x40 */
 	RT5033_REG_CTRL			= 0x41,
 	RT5033_REG_BUCK_CTRL		= 0x42,
@@ -93,6 +93,55 @@ enum rt5033_reg {
 #define RT5033_RT_CTRL1_UUG_MASK	0x02
 #define RT5033_RT_HZ_MASK		0x01
 
+/* RT5033 FLED Function1 register */
+#define RT5033_FL_FLED1_MASK		0x94
+#define RT5033_FL_STROBE_SEL		0x04
+#define RT5033_FL_PIN_CTRL		0x10
+#define RT5033_FL_RESET			0x80
+
+/* RT5033 FLED Function2 register */
+#define RT5033_FL_FLED2_MASK		0x81
+#define RT5033_FL_ENFLED		0x01
+#define RT5033_FL_SREG_STROBE		0x80
+
+/* RT5033 FLED Strobe Control1 */
+#define RT5033_FL_STRBCTRL1_MASK	0xFF
+#define RT5033_FL_STRBCTRL1_TM_CUR_MAX	0xE0
+#define RT5033_FL_STRBCTRL1_FL_CUR_DEF	0x0D
+#define RT5033_FL_STRBCTRL1_FL_CUR_MAX	0x1F
+
+/* RT5033 FLED Strobe Control2 */
+#define RT5033_FL_STRBCTRL2_MASK	0x3F
+#define RT5033_FL_STRBCTRL2_TM_DEF	0x0F
+#define RT5033_FL_STRBCTRL2_TM_MAX	0x3F
+
+/* RT5033 FLED Control1 */
+#define RT5033_FL_CTRL1_MASK		0xF7
+#define RT5033_FL_CTRL1_TORCH_CUR_DEF	0x20
+#define RT5033_FL_CTRL1_TORCH_CUR_MAX	0xF0
+#define RT5033_FL_CTRL1_LBP_DEF		0x02
+#define RT5033_FL_CTRL1_LBP_MAX		0x07
+
+/* RT5033 FLED Control2 */
+#define RT5033_FL_CTRL2_MASK		0xFF
+#define RT5033_FL_CTRL2_VMID_DEF	0x37
+#define RT5033_FL_CTRL2_VMID_MAX	0x3F
+#define RT5033_FL_CTRL2_TRACK_ALIVE	0x40
+#define RT5033_FL_CTRL2_MID_TRACK	0x80
+
+/* RT5033 FLED Control4 */
+#define RT5033_FL_CTRL4_MASK		0xE0
+#define RT5033_FL_CTRL4_RESV		0x14
+#define RT5033_FL_CTRL4_VTRREG_DEF	0x40
+#define RT5033_FL_CTRL4_VTRREG_MAX	0x60
+#define RT5033_FL_CTRL4_TRACK_CLK	0x80
+
+/* RT5033 FLED Control5 */
+#define RT5033_FL_CTRL5_MASK		0xC0
+#define RT5033_FL_CTRL5_RESV		0x10
+#define RT5033_FL_CTRL5_TA_GOOD		0x40
+#define RT5033_FL_CTRL5_TA_EXIST	0x80
+
 /* RT5033 control register */
 #define RT5033_CTRL_FCCM_BUCK_MASK		0x00
 #define RT5033_CTRL_BUCKOMS_MASK		0x01
diff --git a/include/linux/mfd/rt5033.h b/include/linux/mfd/rt5033.h
index 6cff5cf..45c97b7 100644
--- a/include/linux/mfd/rt5033.h
+++ b/include/linux/mfd/rt5033.h
@@ -12,10 +12,11 @@
 #ifndef __RT5033_H__
 #define __RT5033_H__
 
-#include <linux/regulator/consumer.h>
+#include <linux/led-class-flash.h>
 #include <linux/i2c.h>
-#include <linux/regmap.h>
 #include <linux/power_supply.h>
+#include <linux/regmap.h>
+#include <linux/regulator/consumer.h>
 
 /* RT5033 regulator IDs */
 enum rt5033_regulators {
@@ -59,4 +60,26 @@ struct rt5033_charger {
 	struct rt5033_charger_data	*chg;
 };
 
+/* RT5033 led platform data */
+
+struct rt5033_led_config_data {
+	/* maximum LED current in movie mode */
+	u32 torch_max_microamp;
+	/* maximum LED current in flash mode */
+	u32 flash_max_microamp;
+	/* maximum flash timeout */
+	u32 flash_max_timeout;
+	/* max LED brightness level */
+	enum led_brightness max_brightness;
+};
+
+struct rt5033_led {
+	struct device		*dev;
+	struct rt5033_dev	*rt5033;
+	struct regmap		*regmap;
+
+	/* Related LED class device */
+	struct led_classdev	cdev;
+};
+
 #endif /* __RT5033_H__ */
-- 
2.0.5

Re: [PATCH 2/2] leds: rt5033: Add RT5033 Flash led device driver

[kbuild test robot]

[-- Attachment #1: Type: text/plain, Size: 7260 bytes --]

Hi Ingi,

[auto build test results on v4.3-rc3 -- if it's inappropriate base, please ignore]

config: i386-allmodconfig (attached as .config)
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

All error/warnings (new ones prefixed by >>):

   In file included from include/linux/list.h:8:0,
                    from include/linux/kobject.h:20,
                    from include/linux/device.h:17,
                    from include/linux/leds.h:15,
                    from include/linux/led-class-flash.h:15,
                    from include/linux/mfd/rt5033.h:15,
                    from drivers/leds/leds-rt5033.c:13:
   drivers/leds/leds-rt5033.c: In function 'flcdev_to_led':
>> include/linux/kernel.h:811:27: error: 'struct rt5033_led' has no member named 'fled_cdev'
     const typeof( ((type *)0)->member ) *__mptr = (ptr); \
                              ^
>> drivers/leds/leds-rt5033.c:28:9: note: in expansion of macro 'container_of'
     return container_of(fled_cdev, struct rt5033_led, fled_cdev);
            ^
   include/linux/kernel.h:811:48: warning: initialization from incompatible pointer type [-Wincompatible-pointer-types]
     const typeof( ((type *)0)->member ) *__mptr = (ptr); \
                                                   ^
>> drivers/leds/leds-rt5033.c:28:9: note: in expansion of macro 'container_of'
     return container_of(fled_cdev, struct rt5033_led, fled_cdev);
            ^
   In file included from include/linux/compiler.h:56:0,
                    from include/linux/ioport.h:12,
                    from include/linux/device.h:16,
                    from include/linux/leds.h:15,
                    from include/linux/led-class-flash.h:15,
                    from include/linux/mfd/rt5033.h:15,
                    from drivers/leds/leds-rt5033.c:13:
>> include/linux/compiler-gcc.h:158:2: error: 'struct rt5033_led' has no member named 'fled_cdev'
     __builtin_offsetof(a, b)
     ^
   include/linux/stddef.h:16:32: note: in expansion of macro '__compiler_offsetof'
    #define offsetof(TYPE, MEMBER) __compiler_offsetof(TYPE, MEMBER)
                                   ^
   include/linux/kernel.h:812:29: note: in expansion of macro 'offsetof'
     (type *)( (char *)__mptr - offsetof(type,member) );})
                                ^
>> drivers/leds/leds-rt5033.c:28:9: note: in expansion of macro 'container_of'
     return container_of(fled_cdev, struct rt5033_led, fled_cdev);
            ^
   drivers/leds/leds-rt5033.c: In function 'rt5033_led_brightness_set':
>> drivers/leds/leds-rt5033.c:42:8: error: 'RT5033_FL_FUNC1_MASK' undeclared (first use in this function)
           RT5033_FL_FUNC1_MASK, RT5033_FL_PINCTRL);
           ^
   drivers/leds/leds-rt5033.c:42:8: note: each undeclared identifier is reported only once for each function it appears in
>> drivers/leds/leds-rt5033.c:42:30: error: 'RT5033_FL_PINCTRL' undeclared (first use in this function)
           RT5033_FL_FUNC1_MASK, RT5033_FL_PINCTRL);
                                 ^
   drivers/leds/leds-rt5033.c: In function 'rt5033_init_flash_timeout':
>> drivers/leds/leds-rt5033.c:56:16: error: 'struct rt5033_led' has no member named 'fled_cdev'
     setting = &led->fled_cdev.timeout;
                   ^
>> drivers/leds/leds-rt5033.c:58:20: error: 'struct rt5033_led' has no member named 'data'
     setting->max = led->data->flash_max_timeout;
                       ^
   drivers/leds/leds-rt5033.c:60:20: error: 'struct rt5033_led' has no member named 'data'
     setting->val = led->data->flash_max_timeout;
                       ^
   drivers/leds/leds-rt5033.c: In function 'rt5033_led_parse_dt':
   drivers/leds/leds-rt5033.c:83:5: error: 'struct rt5033_led' has no member named 'fled_cdev'
     led->fled_cdev.led_cdev.name =
        ^
   drivers/leds/leds-rt5033.c:106:5: error: 'struct rt5033_led' has no member named 'data'
     led->data = data;
        ^
   drivers/leds/leds-rt5033.c: In function 'rt5033_led_flash_strobe_set':
   drivers/leds/leds-rt5033.c:124:7: error: 'RT5033_FL_FUNC1_MASK' undeclared (first use in this function)
          RT5033_FL_FUNC1_MASK, RT5033_FL_RESET);
          ^
>> drivers/leds/leds-rt5033.c:133:30: error: 'RT5033_FL_STRB_SEL' undeclared (first use in this function)
           RT5033_FL_FUNC1_MASK, RT5033_FL_STRB_SEL
                                 ^
   drivers/leds/leds-rt5033.c:134:10: error: 'RT5033_FL_PINCTRL' undeclared (first use in this function)
           | RT5033_FL_PINCTRL);
             ^
>> drivers/leds/leds-rt5033.c:136:8: error: 'RT5033_FL_FUNC2_MASK' undeclared (first use in this function)
           RT5033_FL_FUNC2_MASK, RT5033_FL_ENFLED
           ^
>> drivers/leds/leds-rt5033.c:137:10: error: 'RT5033_FL_SREG_STRB' undeclared (first use in this function)
           | RT5033_FL_SREG_STRB);
             ^
   drivers/leds/leds-rt5033.c: In function 'rt5033_led_probe':
   drivers/leds/leds-rt5033.c:168:5: error: 'struct rt5033_led' has no member named 'fled_cdev'
     led->fled_cdev.ops = &flash_ops;
        ^
   drivers/leds/leds-rt5033.c:169:17: error: 'struct rt5033_led' has no member named 'fled_cdev'
     led_cdev = &led->fled_cdev.led_cdev;
                    ^
   drivers/leds/leds-rt5033.c:175:52: error: 'struct rt5033_led' has no member named 'fled_cdev'
     ret = led_classdev_flash_register(&pdev->dev, &led->fled_cdev);
                                                       ^
   drivers/leds/leds-rt5033.c:182:7: error: 'RT5033_FL_FUNC1_MASK' undeclared (first use in this function)
          RT5033_FL_FUNC1_MASK, RT5033_FL_RESET);
          ^
   drivers/leds/leds-rt5033.c: In function 'rt5033_led_remove':
   drivers/leds/leds-rt5033.c:191:36: error: 'struct rt5033_led' has no member named 'fled_cdev'
     led_classdev_flash_unregister(&led->fled_cdev);
                                       ^
   drivers/leds/leds-rt5033.c: In function 'flcdev_to_led':
>> drivers/leds/leds-rt5033.c:29:1: warning: control reaches end of non-void function [-Wreturn-type]
    }
    ^

vim +811 include/linux/kernel.h

^1da177e Linus Torvalds 2005-04-16  805   * @ptr:	the pointer to the member.
^1da177e Linus Torvalds 2005-04-16  806   * @type:	the type of the container struct this is embedded in.
^1da177e Linus Torvalds 2005-04-16  807   * @member:	the name of the member within the struct.
^1da177e Linus Torvalds 2005-04-16  808   *
^1da177e Linus Torvalds 2005-04-16  809   */
^1da177e Linus Torvalds 2005-04-16  810  #define container_of(ptr, type, member) ({			\
^1da177e Linus Torvalds 2005-04-16 @811  	const typeof( ((type *)0)->member ) *__mptr = (ptr);	\
^1da177e Linus Torvalds 2005-04-16  812  	(type *)( (char *)__mptr - offsetof(type,member) );})
^1da177e Linus Torvalds 2005-04-16  813  
b9d4f426 Arnaud Lacombe 2011-07-25  814  /* Rebuild everything on CONFIG_FTRACE_MCOUNT_RECORD */

:::::: The code at line 811 was first introduced by commit
:::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2

:::::: TO: Linus Torvalds <torvalds@ppc970.osdl.org>
:::::: CC: Linus Torvalds <torvalds@ppc970.osdl.org>

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

[-- Attachment #2: .config.gz --]
[-- Type: application/octet-stream, Size: 51595 bytes --]

Re: [PATCH 2/2] leds: rt5033: Add RT5033 Flash led device driver

[kbuild test robot]

[-- Attachment #1: Type: text/plain, Size: 7260 bytes --]

Hi Ingi,

[auto build test results on v4.3-rc3 -- if it's inappropriate base, please ignore]

config: i386-allmodconfig (attached as .config)
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

All error/warnings (new ones prefixed by >>):

   In file included from include/linux/list.h:8:0,
                    from include/linux/kobject.h:20,
                    from include/linux/device.h:17,
                    from include/linux/leds.h:15,
                    from include/linux/led-class-flash.h:15,
                    from include/linux/mfd/rt5033.h:15,
                    from drivers/leds/leds-rt5033.c:13:
   drivers/leds/leds-rt5033.c: In function 'flcdev_to_led':
>> include/linux/kernel.h:811:27: error: 'struct rt5033_led' has no member named 'fled_cdev'
     const typeof( ((type *)0)->member ) *__mptr = (ptr); \
                              ^
>> drivers/leds/leds-rt5033.c:28:9: note: in expansion of macro 'container_of'
     return container_of(fled_cdev, struct rt5033_led, fled_cdev);
            ^
   include/linux/kernel.h:811:48: warning: initialization from incompatible pointer type [-Wincompatible-pointer-types]
     const typeof( ((type *)0)->member ) *__mptr = (ptr); \
                                                   ^
>> drivers/leds/leds-rt5033.c:28:9: note: in expansion of macro 'container_of'
     return container_of(fled_cdev, struct rt5033_led, fled_cdev);
            ^
   In file included from include/linux/compiler.h:56:0,
                    from include/linux/ioport.h:12,
                    from include/linux/device.h:16,
                    from include/linux/leds.h:15,
                    from include/linux/led-class-flash.h:15,
                    from include/linux/mfd/rt5033.h:15,
                    from drivers/leds/leds-rt5033.c:13:
>> include/linux/compiler-gcc.h:158:2: error: 'struct rt5033_led' has no member named 'fled_cdev'
     __builtin_offsetof(a, b)
     ^
   include/linux/stddef.h:16:32: note: in expansion of macro '__compiler_offsetof'
    #define offsetof(TYPE, MEMBER) __compiler_offsetof(TYPE, MEMBER)
                                   ^
   include/linux/kernel.h:812:29: note: in expansion of macro 'offsetof'
     (type *)( (char *)__mptr - offsetof(type,member) );})
                                ^
>> drivers/leds/leds-rt5033.c:28:9: note: in expansion of macro 'container_of'
     return container_of(fled_cdev, struct rt5033_led, fled_cdev);
            ^
   drivers/leds/leds-rt5033.c: In function 'rt5033_led_brightness_set':
>> drivers/leds/leds-rt5033.c:42:8: error: 'RT5033_FL_FUNC1_MASK' undeclared (first use in this function)
           RT5033_FL_FUNC1_MASK, RT5033_FL_PINCTRL);
           ^
   drivers/leds/leds-rt5033.c:42:8: note: each undeclared identifier is reported only once for each function it appears in
>> drivers/leds/leds-rt5033.c:42:30: error: 'RT5033_FL_PINCTRL' undeclared (first use in this function)
           RT5033_FL_FUNC1_MASK, RT5033_FL_PINCTRL);
                                 ^
   drivers/leds/leds-rt5033.c: In function 'rt5033_init_flash_timeout':
>> drivers/leds/leds-rt5033.c:56:16: error: 'struct rt5033_led' has no member named 'fled_cdev'
     setting = &led->fled_cdev.timeout;
                   ^
>> drivers/leds/leds-rt5033.c:58:20: error: 'struct rt5033_led' has no member named 'data'
     setting->max = led->data->flash_max_timeout;
                       ^
   drivers/leds/leds-rt5033.c:60:20: error: 'struct rt5033_led' has no member named 'data'
     setting->val = led->data->flash_max_timeout;
                       ^
   drivers/leds/leds-rt5033.c: In function 'rt5033_led_parse_dt':
   drivers/leds/leds-rt5033.c:83:5: error: 'struct rt5033_led' has no member named 'fled_cdev'
     led->fled_cdev.led_cdev.name =
        ^
   drivers/leds/leds-rt5033.c:106:5: error: 'struct rt5033_led' has no member named 'data'
     led->data = data;
        ^
   drivers/leds/leds-rt5033.c: In function 'rt5033_led_flash_strobe_set':
   drivers/leds/leds-rt5033.c:124:7: error: 'RT5033_FL_FUNC1_MASK' undeclared (first use in this function)
          RT5033_FL_FUNC1_MASK, RT5033_FL_RESET);
          ^
>> drivers/leds/leds-rt5033.c:133:30: error: 'RT5033_FL_STRB_SEL' undeclared (first use in this function)
           RT5033_FL_FUNC1_MASK, RT5033_FL_STRB_SEL
                                 ^
   drivers/leds/leds-rt5033.c:134:10: error: 'RT5033_FL_PINCTRL' undeclared (first use in this function)
           | RT5033_FL_PINCTRL);
             ^
>> drivers/leds/leds-rt5033.c:136:8: error: 'RT5033_FL_FUNC2_MASK' undeclared (first use in this function)
           RT5033_FL_FUNC2_MASK, RT5033_FL_ENFLED
           ^
>> drivers/leds/leds-rt5033.c:137:10: error: 'RT5033_FL_SREG_STRB' undeclared (first use in this function)
           | RT5033_FL_SREG_STRB);
             ^
   drivers/leds/leds-rt5033.c: In function 'rt5033_led_probe':
   drivers/leds/leds-rt5033.c:168:5: error: 'struct rt5033_led' has no member named 'fled_cdev'
     led->fled_cdev.ops = &flash_ops;
        ^
   drivers/leds/leds-rt5033.c:169:17: error: 'struct rt5033_led' has no member named 'fled_cdev'
     led_cdev = &led->fled_cdev.led_cdev;
                    ^
   drivers/leds/leds-rt5033.c:175:52: error: 'struct rt5033_led' has no member named 'fled_cdev'
     ret = led_classdev_flash_register(&pdev->dev, &led->fled_cdev);
                                                       ^
   drivers/leds/leds-rt5033.c:182:7: error: 'RT5033_FL_FUNC1_MASK' undeclared (first use in this function)
          RT5033_FL_FUNC1_MASK, RT5033_FL_RESET);
          ^
   drivers/leds/leds-rt5033.c: In function 'rt5033_led_remove':
   drivers/leds/leds-rt5033.c:191:36: error: 'struct rt5033_led' has no member named 'fled_cdev'
     led_classdev_flash_unregister(&led->fled_cdev);
                                       ^
   drivers/leds/leds-rt5033.c: In function 'flcdev_to_led':
>> drivers/leds/leds-rt5033.c:29:1: warning: control reaches end of non-void function [-Wreturn-type]
    }
    ^

vim +811 include/linux/kernel.h

^1da177e Linus Torvalds 2005-04-16  805   * @ptr:	the pointer to the member.
^1da177e Linus Torvalds 2005-04-16  806   * @type:	the type of the container struct this is embedded in.
^1da177e Linus Torvalds 2005-04-16  807   * @member:	the name of the member within the struct.
^1da177e Linus Torvalds 2005-04-16  808   *
^1da177e Linus Torvalds 2005-04-16  809   */
^1da177e Linus Torvalds 2005-04-16  810  #define container_of(ptr, type, member) ({			\
^1da177e Linus Torvalds 2005-04-16 @811  	const typeof( ((type *)0)->member ) *__mptr = (ptr);	\
^1da177e Linus Torvalds 2005-04-16  812  	(type *)( (char *)__mptr - offsetof(type,member) );})
^1da177e Linus Torvalds 2005-04-16  813  
b9d4f426 Arnaud Lacombe 2011-07-25  814  /* Rebuild everything on CONFIG_FTRACE_MCOUNT_RECORD */

:::::: The code at line 811 was first introduced by commit
:::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2

:::::: TO: Linus Torvalds <torvalds@ppc970.osdl.org>
:::::: CC: Linus Torvalds <torvalds@ppc970.osdl.org>

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

[-- Attachment #2: .config.gz --]
[-- Type: application/octet-stream, Size: 51595 bytes --]

Re: [PATCH 1/2] leds: rt5033: add DT binding for RT5033

[Rob Herring]

On Fri, Oct 2, 2015 at 4:41 AM, Ingi Kim <ingi2.kim@samsung.com> wrote:
> This patch adds the device tree bindings for RT5033 flash LEDs.
>
> Signed-off-by: Ingi Kim <ingi2.kim@samsung.com>

Acked-by: Rob Herring <robh@kernel.org>

> ---
>  .../devicetree/bindings/leds/leds-rt5033.txt       | 38 ++++++++++++++++++++++
>  1 file changed, 38 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/leds/leds-rt5033.txt
>
> diff --git a/Documentation/devicetree/bindings/leds/leds-rt5033.txt b/Documentation/devicetree/bindings/leds/leds-rt5033.txt
> new file mode 100644
> index 0000000..2ef7bdc
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/leds/leds-rt5033.txt
> @@ -0,0 +1,38 @@
> +* Richtek Technology Corporation - RT5033 Flash LED Driver
> +
> +The RT5033 Flash LED Circuit is designed for one or two LEDs driving
> +for torch and strobe applications, it provides an I2C software command
> +to trigger the torch and strobe operation.
> +
> +Required properties:
> +- compatible : Must be "richtek,rt5033-led".
> +
> +A discrete LED element connected to the device must be represented by a child
> +node - see Documentation/devicetree/bindings/leds/common.txt.
> +
> +Required properties of the LED child node:
> +  See Documentation/devicetree/bindings/leds/common.txt
> +- led-max-microamp : Minimum Threshold for Timer protection
> +  is defined internally (Maximum 200mA).
> +- flash-max-microamp : Flash LED maximum current
> +- flash-max-timeout-us : Flash LED maximum timeout
> +
> +Optional properties of the LED child node:
> +- label : see Documentation/devicetree/bindings/leds/common.txt
> +
> +Example:
> +
> +rt5033 {
> +       compatible = "richtek,rt5033";
> +
> +       led {
> +               compatible = "richtek,rt5033-led";
> +
> +               flash-led {
> +                       label = "rt5033-flash";
> +                       led-max-microamp = <200000>;
> +                       flash-max-microamp = <800000>;
> +                       flash-max-timeout-us = <1216000>;
> +               };
> +       };
> +}
> --
> 2.0.5
>

Re: [PATCH 0/2] Add RT5033 Flash LED driver

[Jacek Anaszewski]

Hi Ingi,

Thanks for the patches. Please fix build errors
and resubmit.

On 10/02/2015 11:41 AM, Ingi Kim wrote:
> This patch adds ktd2692 Flash LED driver with LED Flash class
>
> Ingi Kim (2):
>    leds: rt5033: add DT binding for RT5033
>    leds: rt5033: Add RT5033 Flash led device driver
>
>   .../devicetree/bindings/leds/leds-rt5033.txt       |  38 ++++
>   drivers/leds/Kconfig                               |   8 +
>   drivers/leds/Makefile                              |   1 +
>   drivers/leds/leds-rt5033.c                         | 222 +++++++++++++++++++++
>   drivers/mfd/rt5033.c                               |   3 +
>   include/linux/mfd/rt5033-private.h                 |  67 ++++++-
>   include/linux/mfd/rt5033.h                         |  27 ++-
>   7 files changed, 355 insertions(+), 11 deletions(-)
>   create mode 100644 Documentation/devicetree/bindings/leds/leds-rt5033.txt
>   create mode 100644 drivers/leds/leds-rt5033.c
>


-- 
Best Regards,
Jacek Anaszewski

Re: [PATCH 0/2] Add RT5033 Flash LED driver

[Ingi Kim]

Hi, Jacek

Thanks for review my patch
Oops! old version patch is sent.
I should have checked..
I'll send new patch, soon.

Thanks
Ingi Kim

On 2015년 10월 02일 23:59, Jacek Anaszewski wrote:
> Hi Ingi,
> 
> Thanks for the patches. Please fix build errors
> and resubmit.
> 
> On 10/02/2015 11:41 AM, Ingi Kim wrote:
>> This patch adds ktd2692 Flash LED driver with LED Flash class
>>
>> Ingi Kim (2):
>>    leds: rt5033: add DT binding for RT5033
>>    leds: rt5033: Add RT5033 Flash led device driver
>>
>>   .../devicetree/bindings/leds/leds-rt5033.txt       |  38 ++++
>>   drivers/leds/Kconfig                               |   8 +
>>   drivers/leds/Makefile                              |   1 +
>>   drivers/leds/leds-rt5033.c                         | 222 +++++++++++++++++++++
>>   drivers/mfd/rt5033.c                               |   3 +
>>   include/linux/mfd/rt5033-private.h                 |  67 ++++++-
>>   include/linux/mfd/rt5033.h                         |  27 ++-
>>   7 files changed, 355 insertions(+), 11 deletions(-)
>>   create mode 100644 Documentation/devicetree/bindings/leds/leds-rt5033.txt
>>   create mode 100644 drivers/leds/leds-rt5033.c
>>
> 
> 

Re: [PATCH 2/2] leds: rt5033: Add RT5033 Flash led device driver

[Lee Jones]

On Fri, 02 Oct 2015, Ingi Kim wrote:

> This patch adds device driver of Richtek RT5033 PMIC.
> The driver supports a current regulated output to drive
> white LEDs for camera flash.
> 
> Signed-off-by: Ingi Kim <ingi2.kim@samsung.com>
> ---
>  drivers/leds/Kconfig               |   8 ++
>  drivers/leds/Makefile              |   1 +
>  drivers/leds/leds-rt5033.c         | 222 +++++++++++++++++++++++++++++++++++++
>  drivers/mfd/rt5033.c               |   3 +
>  include/linux/mfd/rt5033-private.h |  67 +++++++++--
>  include/linux/mfd/rt5033.h         |  27 ++++-

Please pull the MFD changes out into to separate patch(es).

>  6 files changed, 317 insertions(+), 11 deletions(-)
>  create mode 100644 drivers/leds/leds-rt5033.c

[...]

> diff --git a/drivers/mfd/rt5033.c b/drivers/mfd/rt5033.c
> index d60f916..035421c 100644
> --- a/drivers/mfd/rt5033.c
> +++ b/drivers/mfd/rt5033.c
> @@ -47,6 +47,9 @@ static const struct mfd_cell rt5033_devs[] = {
>  	}, {
>  		.name = "rt5033-battery",
>  		.of_compatible = "richtek,rt5033-battery",
> +	}, {
> +		.name = "rt5033-led",
> +		.of_compatible = "richtek,rt5033-led",
>  	},
>  };

Needs to be in a patch of its own.

> diff --git a/include/linux/mfd/rt5033-private.h b/include/linux/mfd/rt5033-private.h
> index 1b63fc2..21c3aff 100644
> --- a/include/linux/mfd/rt5033-private.h
> +++ b/include/linux/mfd/rt5033-private.h
> @@ -25,15 +25,15 @@ enum rt5033_reg {
>  	/* Reserved 0x09~0x18 */
>  	RT5033_REG_RT_CTRL1		= 0x19,
>  	/* Reserved 0x1A~0x20 */
> -	RT5033_REG_FLED_FUNCTION1	= 0x21,
> -	RT5033_REG_FLED_FUNCTION2	= 0x22,
> -	RT5033_REG_FLED_STROBE_CTRL1	= 0x23,
> -	RT5033_REG_FLED_STROBE_CTRL2	= 0x24,
> -	RT5033_REG_FLED_CTRL1		= 0x25,
> -	RT5033_REG_FLED_CTRL2		= 0x26,
> -	RT5033_REG_FLED_CTRL3		= 0x27,
> -	RT5033_REG_FLED_CTRL4		= 0x28,
> -	RT5033_REG_FLED_CTRL5		= 0x29,
> +	RT5033_REG_FL_FUNCTION1		= 0x21,
> +	RT5033_REG_FL_FUNCTION2		= 0x22,
> +	RT5033_REG_FL_STROBE_CTRL1	= 0x23,
> +	RT5033_REG_FL_STROBE_CTRL2	= 0x24,
> +	RT5033_REG_FL_CTRL1		= 0x25,
> +	RT5033_REG_FL_CTRL2		= 0x26,
> +	RT5033_REG_FL_CTRL3		= 0x27,
> +	RT5033_REG_FL_CTRL4		= 0x28,
> +	RT5033_REG_FL_CTRL5		= 0x29,

Why this change?

The previous naming convention was better.

>  	/* Reserved 0x2A~0x40 */
>  	RT5033_REG_CTRL			= 0x41,
>  	RT5033_REG_BUCK_CTRL		= 0x42,
> @@ -93,6 +93,55 @@ enum rt5033_reg {
>  #define RT5033_RT_CTRL1_UUG_MASK	0x02
>  #define RT5033_RT_HZ_MASK		0x01
>  
> +/* RT5033 FLED Function1 register */
> +#define RT5033_FL_FLED1_MASK		0x94
> +#define RT5033_FL_STROBE_SEL		0x04
> +#define RT5033_FL_PIN_CTRL		0x10
> +#define RT5033_FL_RESET			0x80
> +
> +/* RT5033 FLED Function2 register */
> +#define RT5033_FL_FLED2_MASK		0x81
> +#define RT5033_FL_ENFLED		0x01
> +#define RT5033_FL_SREG_STROBE		0x80
> +
> +/* RT5033 FLED Strobe Control1 */
> +#define RT5033_FL_STRBCTRL1_MASK	0xFF
> +#define RT5033_FL_STRBCTRL1_TM_CUR_MAX	0xE0
> +#define RT5033_FL_STRBCTRL1_FL_CUR_DEF	0x0D
> +#define RT5033_FL_STRBCTRL1_FL_CUR_MAX	0x1F
> +
> +/* RT5033 FLED Strobe Control2 */
> +#define RT5033_FL_STRBCTRL2_MASK	0x3F
> +#define RT5033_FL_STRBCTRL2_TM_DEF	0x0F
> +#define RT5033_FL_STRBCTRL2_TM_MAX	0x3F
> +
> +/* RT5033 FLED Control1 */
> +#define RT5033_FL_CTRL1_MASK		0xF7
> +#define RT5033_FL_CTRL1_TORCH_CUR_DEF	0x20
> +#define RT5033_FL_CTRL1_TORCH_CUR_MAX	0xF0
> +#define RT5033_FL_CTRL1_LBP_DEF		0x02
> +#define RT5033_FL_CTRL1_LBP_MAX		0x07
> +
> +/* RT5033 FLED Control2 */
> +#define RT5033_FL_CTRL2_MASK		0xFF
> +#define RT5033_FL_CTRL2_VMID_DEF	0x37
> +#define RT5033_FL_CTRL2_VMID_MAX	0x3F
> +#define RT5033_FL_CTRL2_TRACK_ALIVE	0x40
> +#define RT5033_FL_CTRL2_MID_TRACK	0x80
> +
> +/* RT5033 FLED Control4 */
> +#define RT5033_FL_CTRL4_MASK		0xE0
> +#define RT5033_FL_CTRL4_RESV		0x14
> +#define RT5033_FL_CTRL4_VTRREG_DEF	0x40
> +#define RT5033_FL_CTRL4_VTRREG_MAX	0x60
> +#define RT5033_FL_CTRL4_TRACK_CLK	0x80
> +
> +/* RT5033 FLED Control5 */
> +#define RT5033_FL_CTRL5_MASK		0xC0
> +#define RT5033_FL_CTRL5_RESV		0x10
> +#define RT5033_FL_CTRL5_TA_GOOD		0x40
> +#define RT5033_FL_CTRL5_TA_EXIST	0x80
> +
>  /* RT5033 control register */
>  #define RT5033_CTRL_FCCM_BUCK_MASK		0x00
>  #define RT5033_CTRL_BUCKOMS_MASK		0x01
> diff --git a/include/linux/mfd/rt5033.h b/include/linux/mfd/rt5033.h
> index 6cff5cf..45c97b7 100644
> --- a/include/linux/mfd/rt5033.h
> +++ b/include/linux/mfd/rt5033.h
> @@ -12,10 +12,11 @@
>  #ifndef __RT5033_H__
>  #define __RT5033_H__
>  
> -#include <linux/regulator/consumer.h>
> +#include <linux/led-class-flash.h>
>  #include <linux/i2c.h>
> -#include <linux/regmap.h>
>  #include <linux/power_supply.h>
> +#include <linux/regmap.h>
> +#include <linux/regulator/consumer.h>
>  
>  /* RT5033 regulator IDs */
>  enum rt5033_regulators {
> @@ -59,4 +60,26 @@ struct rt5033_charger {
>  	struct rt5033_charger_data	*chg;
>  };
>  
> +/* RT5033 led platform data */
> +
> +struct rt5033_led_config_data {
> +	/* maximum LED current in movie mode */
> +	u32 torch_max_microamp;
> +	/* maximum LED current in flash mode */
> +	u32 flash_max_microamp;
> +	/* maximum flash timeout */
> +	u32 flash_max_timeout;
> +	/* max LED brightness level */
> +	enum led_brightness max_brightness;
> +};

Rid these comments.  Use kerneldoc format instead.

> +struct rt5033_led {
> +	struct device		*dev;
> +	struct rt5033_dev	*rt5033;
> +	struct regmap		*regmap;
> +
> +	/* Related LED class device */
> +	struct led_classdev	cdev;
> +};
> +
>  #endif /* __RT5033_H__ */

-- 
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
Follow Linaro: Facebook | Twitter | Blog

Re: [PATCH 2/2] leds: rt5033: Add RT5033 Flash led device driver

[Ingi Kim]

Hello Lee Jones,

Thanks for the review.
I'll try to divide this patch and change name and comment.
Then push ver2 patch soon.

On 2015년 10월 05일 16:21, Lee Jones wrote:
> On Fri, 02 Oct 2015, Ingi Kim wrote:
> 
>> This patch adds device driver of Richtek RT5033 PMIC.
>> The driver supports a current regulated output to drive
>> white LEDs for camera flash.
>>
>> Signed-off-by: Ingi Kim <ingi2.kim-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
>> ---
>>  drivers/leds/Kconfig               |   8 ++
>>  drivers/leds/Makefile              |   1 +
>>  drivers/leds/leds-rt5033.c         | 222 +++++++++++++++++++++++++++++++++++++
>>  drivers/mfd/rt5033.c               |   3 +
>>  include/linux/mfd/rt5033-private.h |  67 +++++++++--
>>  include/linux/mfd/rt5033.h         |  27 ++++-
> 
> Please pull the MFD changes out into to separate patch(es).
> 
>>  6 files changed, 317 insertions(+), 11 deletions(-)
>>  create mode 100644 drivers/leds/leds-rt5033.c
> 
> [...]
> 
>> diff --git a/drivers/mfd/rt5033.c b/drivers/mfd/rt5033.c
>> index d60f916..035421c 100644
>> --- a/drivers/mfd/rt5033.c
>> +++ b/drivers/mfd/rt5033.c
>> @@ -47,6 +47,9 @@ static const struct mfd_cell rt5033_devs[] = {
>>  	}, {
>>  		.name = "rt5033-battery",
>>  		.of_compatible = "richtek,rt5033-battery",
>> +	}, {
>> +		.name = "rt5033-led",
>> +		.of_compatible = "richtek,rt5033-led",
>>  	},
>>  };
> 
> Needs to be in a patch of its own.
> 
>> diff --git a/include/linux/mfd/rt5033-private.h b/include/linux/mfd/rt5033-private.h
>> index 1b63fc2..21c3aff 100644
>> --- a/include/linux/mfd/rt5033-private.h
>> +++ b/include/linux/mfd/rt5033-private.h
>> @@ -25,15 +25,15 @@ enum rt5033_reg {
>>  	/* Reserved 0x09~0x18 */
>>  	RT5033_REG_RT_CTRL1		= 0x19,
>>  	/* Reserved 0x1A~0x20 */
>> -	RT5033_REG_FLED_FUNCTION1	= 0x21,
>> -	RT5033_REG_FLED_FUNCTION2	= 0x22,
>> -	RT5033_REG_FLED_STROBE_CTRL1	= 0x23,
>> -	RT5033_REG_FLED_STROBE_CTRL2	= 0x24,
>> -	RT5033_REG_FLED_CTRL1		= 0x25,
>> -	RT5033_REG_FLED_CTRL2		= 0x26,
>> -	RT5033_REG_FLED_CTRL3		= 0x27,
>> -	RT5033_REG_FLED_CTRL4		= 0x28,
>> -	RT5033_REG_FLED_CTRL5		= 0x29,
>> +	RT5033_REG_FL_FUNCTION1		= 0x21,
>> +	RT5033_REG_FL_FUNCTION2		= 0x22,
>> +	RT5033_REG_FL_STROBE_CTRL1	= 0x23,
>> +	RT5033_REG_FL_STROBE_CTRL2	= 0x24,
>> +	RT5033_REG_FL_CTRL1		= 0x25,
>> +	RT5033_REG_FL_CTRL2		= 0x26,
>> +	RT5033_REG_FL_CTRL3		= 0x27,
>> +	RT5033_REG_FL_CTRL4		= 0x28,
>> +	RT5033_REG_FL_CTRL5		= 0x29,
> 
> Why this change?
> 
> The previous naming convention was better.
> 
>>  	/* Reserved 0x2A~0x40 */
>>  	RT5033_REG_CTRL			= 0x41,
>>  	RT5033_REG_BUCK_CTRL		= 0x42,
>> @@ -93,6 +93,55 @@ enum rt5033_reg {
>>  #define RT5033_RT_CTRL1_UUG_MASK	0x02
>>  #define RT5033_RT_HZ_MASK		0x01
>>  
>> +/* RT5033 FLED Function1 register */
>> +#define RT5033_FL_FLED1_MASK		0x94
>> +#define RT5033_FL_STROBE_SEL		0x04
>> +#define RT5033_FL_PIN_CTRL		0x10
>> +#define RT5033_FL_RESET			0x80
>> +
>> +/* RT5033 FLED Function2 register */
>> +#define RT5033_FL_FLED2_MASK		0x81
>> +#define RT5033_FL_ENFLED		0x01
>> +#define RT5033_FL_SREG_STROBE		0x80
>> +
>> +/* RT5033 FLED Strobe Control1 */
>> +#define RT5033_FL_STRBCTRL1_MASK	0xFF
>> +#define RT5033_FL_STRBCTRL1_TM_CUR_MAX	0xE0
>> +#define RT5033_FL_STRBCTRL1_FL_CUR_DEF	0x0D
>> +#define RT5033_FL_STRBCTRL1_FL_CUR_MAX	0x1F
>> +
>> +/* RT5033 FLED Strobe Control2 */
>> +#define RT5033_FL_STRBCTRL2_MASK	0x3F
>> +#define RT5033_FL_STRBCTRL2_TM_DEF	0x0F
>> +#define RT5033_FL_STRBCTRL2_TM_MAX	0x3F
>> +
>> +/* RT5033 FLED Control1 */
>> +#define RT5033_FL_CTRL1_MASK		0xF7
>> +#define RT5033_FL_CTRL1_TORCH_CUR_DEF	0x20
>> +#define RT5033_FL_CTRL1_TORCH_CUR_MAX	0xF0
>> +#define RT5033_FL_CTRL1_LBP_DEF		0x02
>> +#define RT5033_FL_CTRL1_LBP_MAX		0x07
>> +
>> +/* RT5033 FLED Control2 */
>> +#define RT5033_FL_CTRL2_MASK		0xFF
>> +#define RT5033_FL_CTRL2_VMID_DEF	0x37
>> +#define RT5033_FL_CTRL2_VMID_MAX	0x3F
>> +#define RT5033_FL_CTRL2_TRACK_ALIVE	0x40
>> +#define RT5033_FL_CTRL2_MID_TRACK	0x80
>> +
>> +/* RT5033 FLED Control4 */
>> +#define RT5033_FL_CTRL4_MASK		0xE0
>> +#define RT5033_FL_CTRL4_RESV		0x14
>> +#define RT5033_FL_CTRL4_VTRREG_DEF	0x40
>> +#define RT5033_FL_CTRL4_VTRREG_MAX	0x60
>> +#define RT5033_FL_CTRL4_TRACK_CLK	0x80
>> +
>> +/* RT5033 FLED Control5 */
>> +#define RT5033_FL_CTRL5_MASK		0xC0
>> +#define RT5033_FL_CTRL5_RESV		0x10
>> +#define RT5033_FL_CTRL5_TA_GOOD		0x40
>> +#define RT5033_FL_CTRL5_TA_EXIST	0x80
>> +
>>  /* RT5033 control register */
>>  #define RT5033_CTRL_FCCM_BUCK_MASK		0x00
>>  #define RT5033_CTRL_BUCKOMS_MASK		0x01
>> diff --git a/include/linux/mfd/rt5033.h b/include/linux/mfd/rt5033.h
>> index 6cff5cf..45c97b7 100644
>> --- a/include/linux/mfd/rt5033.h
>> +++ b/include/linux/mfd/rt5033.h
>> @@ -12,10 +12,11 @@
>>  #ifndef __RT5033_H__
>>  #define __RT5033_H__
>>  
>> -#include <linux/regulator/consumer.h>
>> +#include <linux/led-class-flash.h>
>>  #include <linux/i2c.h>
>> -#include <linux/regmap.h>
>>  #include <linux/power_supply.h>
>> +#include <linux/regmap.h>
>> +#include <linux/regulator/consumer.h>
>>  
>>  /* RT5033 regulator IDs */
>>  enum rt5033_regulators {
>> @@ -59,4 +60,26 @@ struct rt5033_charger {
>>  	struct rt5033_charger_data	*chg;
>>  };
>>  
>> +/* RT5033 led platform data */
>> +
>> +struct rt5033_led_config_data {
>> +	/* maximum LED current in movie mode */
>> +	u32 torch_max_microamp;
>> +	/* maximum LED current in flash mode */
>> +	u32 flash_max_microamp;
>> +	/* maximum flash timeout */
>> +	u32 flash_max_timeout;
>> +	/* max LED brightness level */
>> +	enum led_brightness max_brightness;
>> +};
> 
> Rid these comments.  Use kerneldoc format instead.
> 
>> +struct rt5033_led {
>> +	struct device		*dev;
>> +	struct rt5033_dev	*rt5033;
>> +	struct regmap		*regmap;
>> +
>> +	/* Related LED class device */
>> +	struct led_classdev	cdev;
>> +};
>> +
>>  #endif /* __RT5033_H__ */
> 
--
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Re: [PATCH 2/2] leds: rt5033: Add RT5033 Flash led device driver

[Ingi Kim]

Hello Lee Jones,

Thanks for the review.
I'll try to divide this patch and change name and comment.
Then push ver2 patch soon.

On 2015년 10월 05일 16:21, Lee Jones wrote:
> On Fri, 02 Oct 2015, Ingi Kim wrote:
> 
>> This patch adds device driver of Richtek RT5033 PMIC.
>> The driver supports a current regulated output to drive
>> white LEDs for camera flash.
>>
>> Signed-off-by: Ingi Kim <ingi2.kim@samsung.com>
>> ---
>>  drivers/leds/Kconfig               |   8 ++
>>  drivers/leds/Makefile              |   1 +
>>  drivers/leds/leds-rt5033.c         | 222 +++++++++++++++++++++++++++++++++++++
>>  drivers/mfd/rt5033.c               |   3 +
>>  include/linux/mfd/rt5033-private.h |  67 +++++++++--
>>  include/linux/mfd/rt5033.h         |  27 ++++-
> 
> Please pull the MFD changes out into to separate patch(es).
> 
>>  6 files changed, 317 insertions(+), 11 deletions(-)
>>  create mode 100644 drivers/leds/leds-rt5033.c
> 
> [...]
> 
>> diff --git a/drivers/mfd/rt5033.c b/drivers/mfd/rt5033.c
>> index d60f916..035421c 100644
>> --- a/drivers/mfd/rt5033.c
>> +++ b/drivers/mfd/rt5033.c
>> @@ -47,6 +47,9 @@ static const struct mfd_cell rt5033_devs[] = {
>>  	}, {
>>  		.name = "rt5033-battery",
>>  		.of_compatible = "richtek,rt5033-battery",
>> +	}, {
>> +		.name = "rt5033-led",
>> +		.of_compatible = "richtek,rt5033-led",
>>  	},
>>  };
> 
> Needs to be in a patch of its own.
> 
>> diff --git a/include/linux/mfd/rt5033-private.h b/include/linux/mfd/rt5033-private.h
>> index 1b63fc2..21c3aff 100644
>> --- a/include/linux/mfd/rt5033-private.h
>> +++ b/include/linux/mfd/rt5033-private.h
>> @@ -25,15 +25,15 @@ enum rt5033_reg {
>>  	/* Reserved 0x09~0x18 */
>>  	RT5033_REG_RT_CTRL1		= 0x19,
>>  	/* Reserved 0x1A~0x20 */
>> -	RT5033_REG_FLED_FUNCTION1	= 0x21,
>> -	RT5033_REG_FLED_FUNCTION2	= 0x22,
>> -	RT5033_REG_FLED_STROBE_CTRL1	= 0x23,
>> -	RT5033_REG_FLED_STROBE_CTRL2	= 0x24,
>> -	RT5033_REG_FLED_CTRL1		= 0x25,
>> -	RT5033_REG_FLED_CTRL2		= 0x26,
>> -	RT5033_REG_FLED_CTRL3		= 0x27,
>> -	RT5033_REG_FLED_CTRL4		= 0x28,
>> -	RT5033_REG_FLED_CTRL5		= 0x29,
>> +	RT5033_REG_FL_FUNCTION1		= 0x21,
>> +	RT5033_REG_FL_FUNCTION2		= 0x22,
>> +	RT5033_REG_FL_STROBE_CTRL1	= 0x23,
>> +	RT5033_REG_FL_STROBE_CTRL2	= 0x24,
>> +	RT5033_REG_FL_CTRL1		= 0x25,
>> +	RT5033_REG_FL_CTRL2		= 0x26,
>> +	RT5033_REG_FL_CTRL3		= 0x27,
>> +	RT5033_REG_FL_CTRL4		= 0x28,
>> +	RT5033_REG_FL_CTRL5		= 0x29,
> 
> Why this change?
> 
> The previous naming convention was better.
> 
>>  	/* Reserved 0x2A~0x40 */
>>  	RT5033_REG_CTRL			= 0x41,
>>  	RT5033_REG_BUCK_CTRL		= 0x42,
>> @@ -93,6 +93,55 @@ enum rt5033_reg {
>>  #define RT5033_RT_CTRL1_UUG_MASK	0x02
>>  #define RT5033_RT_HZ_MASK		0x01
>>  
>> +/* RT5033 FLED Function1 register */
>> +#define RT5033_FL_FLED1_MASK		0x94
>> +#define RT5033_FL_STROBE_SEL		0x04
>> +#define RT5033_FL_PIN_CTRL		0x10
>> +#define RT5033_FL_RESET			0x80
>> +
>> +/* RT5033 FLED Function2 register */
>> +#define RT5033_FL_FLED2_MASK		0x81
>> +#define RT5033_FL_ENFLED		0x01
>> +#define RT5033_FL_SREG_STROBE		0x80
>> +
>> +/* RT5033 FLED Strobe Control1 */
>> +#define RT5033_FL_STRBCTRL1_MASK	0xFF
>> +#define RT5033_FL_STRBCTRL1_TM_CUR_MAX	0xE0
>> +#define RT5033_FL_STRBCTRL1_FL_CUR_DEF	0x0D
>> +#define RT5033_FL_STRBCTRL1_FL_CUR_MAX	0x1F
>> +
>> +/* RT5033 FLED Strobe Control2 */
>> +#define RT5033_FL_STRBCTRL2_MASK	0x3F
>> +#define RT5033_FL_STRBCTRL2_TM_DEF	0x0F
>> +#define RT5033_FL_STRBCTRL2_TM_MAX	0x3F
>> +
>> +/* RT5033 FLED Control1 */
>> +#define RT5033_FL_CTRL1_MASK		0xF7
>> +#define RT5033_FL_CTRL1_TORCH_CUR_DEF	0x20
>> +#define RT5033_FL_CTRL1_TORCH_CUR_MAX	0xF0
>> +#define RT5033_FL_CTRL1_LBP_DEF		0x02
>> +#define RT5033_FL_CTRL1_LBP_MAX		0x07
>> +
>> +/* RT5033 FLED Control2 */
>> +#define RT5033_FL_CTRL2_MASK		0xFF
>> +#define RT5033_FL_CTRL2_VMID_DEF	0x37
>> +#define RT5033_FL_CTRL2_VMID_MAX	0x3F
>> +#define RT5033_FL_CTRL2_TRACK_ALIVE	0x40
>> +#define RT5033_FL_CTRL2_MID_TRACK	0x80
>> +
>> +/* RT5033 FLED Control4 */
>> +#define RT5033_FL_CTRL4_MASK		0xE0
>> +#define RT5033_FL_CTRL4_RESV		0x14
>> +#define RT5033_FL_CTRL4_VTRREG_DEF	0x40
>> +#define RT5033_FL_CTRL4_VTRREG_MAX	0x60
>> +#define RT5033_FL_CTRL4_TRACK_CLK	0x80
>> +
>> +/* RT5033 FLED Control5 */
>> +#define RT5033_FL_CTRL5_MASK		0xC0
>> +#define RT5033_FL_CTRL5_RESV		0x10
>> +#define RT5033_FL_CTRL5_TA_GOOD		0x40
>> +#define RT5033_FL_CTRL5_TA_EXIST	0x80
>> +
>>  /* RT5033 control register */
>>  #define RT5033_CTRL_FCCM_BUCK_MASK		0x00
>>  #define RT5033_CTRL_BUCKOMS_MASK		0x01
>> diff --git a/include/linux/mfd/rt5033.h b/include/linux/mfd/rt5033.h
>> index 6cff5cf..45c97b7 100644
>> --- a/include/linux/mfd/rt5033.h
>> +++ b/include/linux/mfd/rt5033.h
>> @@ -12,10 +12,11 @@
>>  #ifndef __RT5033_H__
>>  #define __RT5033_H__
>>  
>> -#include <linux/regulator/consumer.h>
>> +#include <linux/led-class-flash.h>
>>  #include <linux/i2c.h>
>> -#include <linux/regmap.h>
>>  #include <linux/power_supply.h>
>> +#include <linux/regmap.h>
>> +#include <linux/regulator/consumer.h>
>>  
>>  /* RT5033 regulator IDs */
>>  enum rt5033_regulators {
>> @@ -59,4 +60,26 @@ struct rt5033_charger {
>>  	struct rt5033_charger_data	*chg;
>>  };
>>  
>> +/* RT5033 led platform data */
>> +
>> +struct rt5033_led_config_data {
>> +	/* maximum LED current in movie mode */
>> +	u32 torch_max_microamp;
>> +	/* maximum LED current in flash mode */
>> +	u32 flash_max_microamp;
>> +	/* maximum flash timeout */
>> +	u32 flash_max_timeout;
>> +	/* max LED brightness level */
>> +	enum led_brightness max_brightness;
>> +};
> 
> Rid these comments.  Use kerneldoc format instead.
> 
>> +struct rt5033_led {
>> +	struct device		*dev;
>> +	struct rt5033_dev	*rt5033;
>> +	struct regmap		*regmap;
>> +
>> +	/* Related LED class device */
>> +	struct led_classdev	cdev;
>> +};
>> +
>>  #endif /* __RT5033_H__ */
> 

Re: [PATCH 1/2] leds: rt5033: add DT binding for RT5033

[Ingi Kim]

Hello, Rob Herring

I'll push ver2 patch soon with your acked
because other patch has some issues.

Thanks for the review.

On 2015년 10월 02일 23:31, Rob Herring wrote:
> On Fri, Oct 2, 2015 at 4:41 AM, Ingi Kim <ingi2.kim@samsung.com> wrote:
>> This patch adds the device tree bindings for RT5033 flash LEDs.
>>
>> Signed-off-by: Ingi Kim <ingi2.kim@samsung.com>
> 
> Acked-by: Rob Herring <robh@kernel.org>
> 
>> ---
>>  .../devicetree/bindings/leds/leds-rt5033.txt       | 38 ++++++++++++++++++++++
>>  1 file changed, 38 insertions(+)
>>  create mode 100644 Documentation/devicetree/bindings/leds/leds-rt5033.txt
>>
>> diff --git a/Documentation/devicetree/bindings/leds/leds-rt5033.txt b/Documentation/devicetree/bindings/leds/leds-rt5033.txt
>> new file mode 100644
>> index 0000000..2ef7bdc
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/leds/leds-rt5033.txt
>> @@ -0,0 +1,38 @@
>> +* Richtek Technology Corporation - RT5033 Flash LED Driver
>> +
>> +The RT5033 Flash LED Circuit is designed for one or two LEDs driving
>> +for torch and strobe applications, it provides an I2C software command
>> +to trigger the torch and strobe operation.
>> +
>> +Required properties:
>> +- compatible : Must be "richtek,rt5033-led".
>> +
>> +A discrete LED element connected to the device must be represented by a child
>> +node - see Documentation/devicetree/bindings/leds/common.txt.
>> +
>> +Required properties of the LED child node:
>> +  See Documentation/devicetree/bindings/leds/common.txt
>> +- led-max-microamp : Minimum Threshold for Timer protection
>> +  is defined internally (Maximum 200mA).
>> +- flash-max-microamp : Flash LED maximum current
>> +- flash-max-timeout-us : Flash LED maximum timeout
>> +
>> +Optional properties of the LED child node:
>> +- label : see Documentation/devicetree/bindings/leds/common.txt
>> +
>> +Example:
>> +
>> +rt5033 {
>> +       compatible = "richtek,rt5033";
>> +
>> +       led {
>> +               compatible = "richtek,rt5033-led";
>> +
>> +               flash-led {
>> +                       label = "rt5033-flash";
>> +                       led-max-microamp = <200000>;
>> +                       flash-max-microamp = <800000>;
>> +                       flash-max-timeout-us = <1216000>;
>> +               };
>> +       };
>> +}
>> --
>> 2.0.5
>>
>