[PATCH v13 0/5] leds: mt6360: Add LED driver for MT6360

[PATCH v13 0/5] leds: mt6360: Add LED driver for MT6360

[Gene Chen]

In-Reply-To: 

This patch series add MT6360 LED support contains driver and binding document

Gene Chen (5)
 leds: flash: Add flash registration with undefined CONFIG_LEDS_CLASS_FLASH
 leds: flash: Fix multicolor no-ops registration by return 0
 dt-bindings: leds: Add LED_COLOR_ID_MOONLIGHT definitions
 dt-bindings: leds: Add bindings for MT6360 LED
 leds: mt6360: Add LED driver for MT6360

 Documentation/devicetree/bindings/leds/leds-mt6360.yaml |  159 +++
 drivers/leds/Kconfig                                    |   13 
 drivers/leds/Makefile                                   |    1 
 drivers/leds/leds-mt6360.c                              |  827 ++++++++++++++++
 include/dt-bindings/leds/common.h                       |    1 
 include/linux/led-class-flash.h                         |   42 
 include/linux/led-class-multicolor.h                    |   42 
 7 files changed, 1049 insertions(+), 36 deletions(-)

changelogs between v1 & v2
 - add led driver with mfd

changelogs between v2 & v3
 - independent add led driver
 - add dt-binding document
 - refactor macros definition for easy to debug
 - parse device tree by fwnode
 - use devm*ext to register led class device

changelogs between v3 & v4
 - fix binding document description
 - use GENMASK and add unit postfix to definition
 - isink register led class device

changelogs between v4 & v5
 - change rgb isink to multicolor control
 - add binding reference to mfd yaml

changelogs between v5 & v6
 - Use DT to decide RGB LED is multicolor device or indicator device only

changelogs between v6 & v7
 - Add binding multicolor device sample code
 - Add flash ops mutex lock
 - Remove V4L2 init with indicator device

changelogs between v7 & v8
 - Add mutex for led fault get ops
 - Fix flash and multicolor no-ops return 0
 - Add LED_FUNCTION_MOONLIGHT

changelogs between v8 & v9
 - reuse api in flash and multicolor header

changelogs between v9 & v10
 - add comment for reuse registration functions in flash and multicolor

changelogs between v10 & v11
 - match dt-binding reg property comment to the functionality name
 - remove exist patch in linux-next
 - dicide multicolor channel by color definitiion

changelogs between v11 & v12
 - Fix print size_t by %zu
 - Fix dt-binding name regular experssion

changelogs between v12 & v13
 - Fix kbuild test rebot build error

[PATCH v13 1/5] leds: flash: Add flash registration with undefined CONFIG_LEDS_CLASS_FLASH

[Gene Chen]

From: Gene Chen <gene_chen@richtek.com>

Add flash registration with undefined CONFIG_LEDS_CLASS_FLASH,
and move the same registration functions outside of #ifdef block.

Signed-off-by: Gene Chen <gene_chen@richtek.com>
Acked-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
---
 include/linux/led-class-flash.h | 42 ++++++++++++++++++++++++++++++++---------
 1 file changed, 33 insertions(+), 9 deletions(-)

diff --git a/include/linux/led-class-flash.h b/include/linux/led-class-flash.h
index 21a3358..612b4ca 100644
--- a/include/linux/led-class-flash.h
+++ b/include/linux/led-class-flash.h
@@ -85,6 +85,7 @@ static inline struct led_classdev_flash *lcdev_to_flcdev(
 	return container_of(lcdev, struct led_classdev_flash, led_cdev);
 }
 
+#if IS_ENABLED(CONFIG_LEDS_CLASS_FLASH)
 /**
  * led_classdev_flash_register_ext - register a new object of LED class with
  *				     init data and with support for flash LEDs
@@ -98,12 +99,6 @@ int led_classdev_flash_register_ext(struct device *parent,
 				    struct led_classdev_flash *fled_cdev,
 				    struct led_init_data *init_data);
 
-static inline int led_classdev_flash_register(struct device *parent,
-					   struct led_classdev_flash *fled_cdev)
-{
-	return led_classdev_flash_register_ext(parent, fled_cdev, NULL);
-}
-
 /**
  * led_classdev_flash_unregister - unregisters an object of led_classdev class
  *				   with support for flash LEDs
@@ -118,15 +113,44 @@ int devm_led_classdev_flash_register_ext(struct device *parent,
 				     struct led_init_data *init_data);
 
 
+void devm_led_classdev_flash_unregister(struct device *parent,
+					struct led_classdev_flash *fled_cdev);
+
+#else
+
+static inline int led_classdev_flash_register_ext(struct device *parent,
+				    struct led_classdev_flash *fled_cdev,
+				    struct led_init_data *init_data)
+{
+	return 0;
+}
+
+static inline void led_classdev_flash_unregister(struct led_classdev_flash *fled_cdev) {};
+static inline int devm_led_classdev_flash_register_ext(struct device *parent,
+				     struct led_classdev_flash *fled_cdev,
+				     struct led_init_data *init_data)
+{
+	return 0;
+}
+
+static inline void devm_led_classdev_flash_unregister(struct device *parent,
+					struct led_classdev_flash *fled_cdev)
+{};
+
+#endif  /* IS_ENABLED(CONFIG_LEDS_CLASS_FLASH) */
+
+static inline int led_classdev_flash_register(struct device *parent,
+					   struct led_classdev_flash *fled_cdev)
+{
+	return led_classdev_flash_register_ext(parent, fled_cdev, NULL);
+}
+
 static inline int devm_led_classdev_flash_register(struct device *parent,
 				     struct led_classdev_flash *fled_cdev)
 {
 	return devm_led_classdev_flash_register_ext(parent, fled_cdev, NULL);
 }
 
-void devm_led_classdev_flash_unregister(struct device *parent,
-					struct led_classdev_flash *fled_cdev);
-
 /**
  * led_set_flash_strobe - setup flash strobe
  * @fled_cdev: the flash LED to set strobe on
-- 
2.7.4

[PATCH v13 2/5] leds: flash: Fix multicolor no-ops registration by return 0

[Gene Chen]

From: Gene Chen <gene_chen@richtek.com>

Fix multicolor no-ops registration by return 0,
and move the same registration functions outside of #ifdef block.

Signed-off-by: Gene Chen <gene_chen@richtek.com>
Acked-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
---
 include/linux/led-class-multicolor.h | 42 +++++++++++++-----------------------
 1 file changed, 15 insertions(+), 27 deletions(-)

diff --git a/include/linux/led-class-multicolor.h b/include/linux/led-class-multicolor.h
index 5116f9a..210d57b 100644
--- a/include/linux/led-class-multicolor.h
+++ b/include/linux/led-class-multicolor.h
@@ -44,12 +44,6 @@ int led_classdev_multicolor_register_ext(struct device *parent,
 					    struct led_classdev_mc *mcled_cdev,
 					    struct led_init_data *init_data);
 
-static inline int led_classdev_multicolor_register(struct device *parent,
-					    struct led_classdev_mc *mcled_cdev)
-{
-	return led_classdev_multicolor_register_ext(parent, mcled_cdev, NULL);
-}
-
 /**
  * led_classdev_multicolor_unregister - unregisters an object of led_classdev
  *					class with support for multicolor LEDs
@@ -68,13 +62,6 @@ int devm_led_classdev_multicolor_register_ext(struct device *parent,
 					  struct led_classdev_mc *mcled_cdev,
 					  struct led_init_data *init_data);
 
-static inline int devm_led_classdev_multicolor_register(struct device *parent,
-				     struct led_classdev_mc *mcled_cdev)
-{
-	return devm_led_classdev_multicolor_register_ext(parent, mcled_cdev,
-							 NULL);
-}
-
 void devm_led_classdev_multicolor_unregister(struct device *parent,
 					    struct led_classdev_mc *mcled_cdev);
 #else
@@ -83,27 +70,33 @@ static inline int led_classdev_multicolor_register_ext(struct device *parent,
 					    struct led_classdev_mc *mcled_cdev,
 					    struct led_init_data *init_data)
 {
-	return -EINVAL;
-}
-
-static inline int led_classdev_multicolor_register(struct device *parent,
-					    struct led_classdev_mc *mcled_cdev)
-{
-	return led_classdev_multicolor_register_ext(parent, mcled_cdev, NULL);
+	return 0;
 }
 
 static inline void led_classdev_multicolor_unregister(struct led_classdev_mc *mcled_cdev) {};
 static inline int led_mc_calc_color_components(struct led_classdev_mc *mcled_cdev,
 					       enum led_brightness brightness)
 {
-	return -EINVAL;
+	return 0;
 }
 
 static inline int devm_led_classdev_multicolor_register_ext(struct device *parent,
 					  struct led_classdev_mc *mcled_cdev,
 					  struct led_init_data *init_data)
 {
-	return -EINVAL;
+	return 0;
+}
+
+static inline void devm_led_classdev_multicolor_unregister(struct device *parent,
+					    struct led_classdev_mc *mcled_cdev)
+{};
+
+#endif  /* IS_ENABLED(CONFIG_LEDS_CLASS_MULTICOLOR) */
+
+static inline int led_classdev_multicolor_register(struct device *parent,
+					    struct led_classdev_mc *mcled_cdev)
+{
+	return led_classdev_multicolor_register_ext(parent, mcled_cdev, NULL);
 }
 
 static inline int devm_led_classdev_multicolor_register(struct device *parent,
@@ -113,9 +106,4 @@ static inline int devm_led_classdev_multicolor_register(struct device *parent,
 							 NULL);
 }
 
-static inline void devm_led_classdev_multicolor_unregister(struct device *parent,
-					    struct led_classdev_mc *mcled_cdev)
-{};
-
-#endif  /* IS_ENABLED(CONFIG_LEDS_CLASS_MULTICOLOR) */
 #endif	/* _LINUX_MULTICOLOR_LEDS_H_INCLUDED */
-- 
2.7.4

Re: [PATCH v13 2/5] leds: flash: Fix multicolor no-ops registration by return 0

[Pavel Machek]

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On Mon 2020-12-21 18:45:51, Gene Chen wrote:
> From: Gene Chen <gene_chen@richtek.com>
> 
> Fix multicolor no-ops registration by return 0,
> and move the same registration functions outside of #ifdef block.
> 
> Signed-off-by: Gene Chen <gene_chen@richtek.com>
> Acked-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>

I applied the first two.

Best regards,
									Pavel
									
-- 
http://www.livejournal.com/~pavelmachek

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[PATCH v13 3/5] dt-bindings: leds: Add LED_FUNCTION_MOONLIGHT definitions

[Gene Chen]

From: Gene Chen <gene_chen@richtek.com>

Add LED_FUNCTION_MOONLIGHT definitions

Signed-off-by: Gene Chen <gene_chen@richtek.com>
Acked-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
Acked-by: Rob Herring <robh@kernel.org>
---
 include/dt-bindings/leds/common.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/dt-bindings/leds/common.h b/include/dt-bindings/leds/common.h
index 52b619d..843e65d 100644
--- a/include/dt-bindings/leds/common.h
+++ b/include/dt-bindings/leds/common.h
@@ -78,6 +78,7 @@
 #define LED_FUNCTION_INDICATOR "indicator"
 #define LED_FUNCTION_LAN "lan"
 #define LED_FUNCTION_MAIL "mail"
+#define LED_FUNCTION_MOONLIGHT "moonlight"
 #define LED_FUNCTION_MTD "mtd"
 #define LED_FUNCTION_PANIC "panic"
 #define LED_FUNCTION_PROGRAMMING "programming"
-- 
2.7.4

Re: [PATCH v13 3/5] dt-bindings: leds: Add LED_FUNCTION_MOONLIGHT definitions

[Pavel Machek]

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Hi!

> From: Gene Chen <gene_chen@richtek.com>
> 
> Add LED_FUNCTION_MOONLIGHT definitions
> 
> Signed-off-by: Gene Chen <gene_chen@richtek.com>
> Acked-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
> Acked-by: Rob Herring <robh@kernel.org>

No, sorry, I don't believe we need another define for flash/torch.

Best regards,
								Pavel
-- 
http://www.livejournal.com/~pavelmachek

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Re: [PATCH v13 3/5] dt-bindings: leds: Add LED_FUNCTION_MOONLIGHT definitions

[Gene Chen]

Pavel Machek <pavel@ucw.cz> 於 2021年2月19日 週五 下午6:47寫道：
>
> Hi!
>
> > From: Gene Chen <gene_chen@richtek.com>
> >
> > Add LED_FUNCTION_MOONLIGHT definitions
> >
> > Signed-off-by: Gene Chen <gene_chen@richtek.com>
> > Acked-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
> > Acked-by: Rob Herring <robh@kernel.org>
>
> No, sorry, I don't believe we need another define for flash/torch.
>

As previous discuss,
> We use term "Moonlight" as reference says
> "When you are trying to imitate moonlight you need to use low voltage,
> softer lighting. You don’t want something that’s too bright"
> which is focus on brightness instead of color.

If any concern about this change, maybe we use LED_FUNCTION_INDICATOR instead?
(refs: https://lkml.org/lkml/2020/11/24/1267)


> Best regards,
>                                                                 Pavel
> --
> http://www.livejournal.com/~pavelmachek

Re: [PATCH v13 3/5] dt-bindings: leds: Add LED_FUNCTION_MOONLIGHT definitions

[Gene Chen]

Gene Chen <gene.chen.richtek@gmail.com> 於 2021年3月2日 週二 下午2:08寫道：
>
> Pavel Machek <pavel@ucw.cz> 於 2021年2月19日 週五 下午6:47寫道：
> >
> > Hi!
> >
> > > From: Gene Chen <gene_chen@richtek.com>
> > >
> > > Add LED_FUNCTION_MOONLIGHT definitions
> > >
> > > Signed-off-by: Gene Chen <gene_chen@richtek.com>
> > > Acked-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
> > > Acked-by: Rob Herring <robh@kernel.org>
> >
> > No, sorry, I don't believe we need another define for flash/torch.
> >
>
> As previous discuss,
> > We use term "Moonlight" as reference says
> > "When you are trying to imitate moonlight you need to use low voltage,
> > softer lighting. You don’t want something that’s too bright"
> > which is focus on brightness instead of color.
>
> If any concern about this change, maybe we use LED_FUNCTION_INDICATOR instead?
> (refs: https://lkml.org/lkml/2020/11/24/1267)

Is there any update?

> > Best regards,
> >                                                                 Pavel
> > --
> > http://www.livejournal.com/~pavelmachek

[PATCH v13 4/5] dt-bindings: leds: Add bindings for MT6360 LED

[Gene Chen]

From: Gene Chen <gene_chen@richtek.com>

Add bindings document for LED support on MT6360 PMIC

Signed-off-by: Gene Chen <gene_chen@richtek.com>
Reviewed-by: Rob Herring <robh@kernel.org>
---
 .../devicetree/bindings/leds/leds-mt6360.yaml      | 159 +++++++++++++++++++++
 1 file changed, 159 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/leds/leds-mt6360.yaml

diff --git a/Documentation/devicetree/bindings/leds/leds-mt6360.yaml b/Documentation/devicetree/bindings/leds/leds-mt6360.yaml
new file mode 100644
index 0000000..cb1f4b7
--- /dev/null
+++ b/Documentation/devicetree/bindings/leds/leds-mt6360.yaml
@@ -0,0 +1,159 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/leds/leds-mt6360.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: LED driver for MT6360 PMIC from MediaTek Integrated.
+
+maintainers:
+  - Gene Chen <gene_chen@richtek.com>
+
+description: |
+  This module is part of the MT6360 MFD device.
+  see Documentation/devicetree/bindings/mfd/mt6360.yaml
+  Add MT6360 LED driver include 2-channel Flash LED with torch/strobe mode,
+  and 4-channel RGB LED support Register/Flash/Breath Mode
+
+properties:
+  compatible:
+    const: mediatek,mt6360-led
+
+  "#address-cells":
+    const: 1
+
+  "#size-cells":
+    const: 0
+
+patternProperties:
+  "^(multi-)?led@[0-5]$":
+    type: object
+    $ref: common.yaml#
+    description:
+      Properties for a single LED.
+
+    properties:
+      reg:
+        description: Index of the LED.
+        enum:
+          - 0 # LED output ISINK1
+          - 1 # LED output ISINK2
+          - 2 # LED output ISINK3
+          - 3 # LED output ISINKML
+          - 4 # LED output FLASH1
+          - 5 # LED output FLASH2
+
+unevaluatedProperties: false
+
+required:
+  - compatible
+  - "#address-cells"
+  - "#size-cells"
+
+additionalProperties: false
+
+examples:
+  - |
+   #include <dt-bindings/leds/common.h>
+   led-controller {
+     compatible = "mediatek,mt6360-led";
+     #address-cells = <1>;
+     #size-cells = <0>;
+
+     multi-led@0 {
+       reg = <0>;
+       function = LED_FUNCTION_INDICATOR;
+       color = <LED_COLOR_ID_RGB>;
+       led-max-microamp = <24000>;
+       #address-cells = <1>;
+       #size-cells = <0>;
+       led@0 {
+         reg = <0>;
+         color = <LED_COLOR_ID_RED>;
+       };
+       led@1 {
+         reg = <1>;
+         color = <LED_COLOR_ID_GREEN>;
+       };
+       led@2 {
+         reg = <2>;
+         color = <LED_COLOR_ID_BLUE>;
+       };
+     };
+     led@3 {
+       reg = <3>;
+       function = LED_FUNCTION_MOONLIGHT;
+       color = <LED_COLOR_ID_WHITE>;
+       led-max-microamp = <150000>;
+     };
+     led@4 {
+       reg = <4>;
+       function = LED_FUNCTION_FLASH;
+       color = <LED_COLOR_ID_WHITE>;
+       function-enumerator = <1>;
+       led-max-microamp = <200000>;
+       flash-max-microamp = <500000>;
+       flash-max-timeout-us = <1024000>;
+     };
+     led@5 {
+       reg = <5>;
+       function = LED_FUNCTION_FLASH;
+       color = <LED_COLOR_ID_WHITE>;
+       function-enumerator = <2>;
+       led-max-microamp = <200000>;
+       flash-max-microamp = <500000>;
+       flash-max-timeout-us = <1024000>;
+     };
+   };
+
+  - |
+
+   led-controller {
+     compatible = "mediatek,mt6360-led";
+     #address-cells = <1>;
+     #size-cells = <0>;
+
+     led@0 {
+       reg = <0>;
+       function = LED_FUNCTION_INDICATOR;
+       color = <LED_COLOR_ID_RED>;
+       led-max-microamp = <24000>;
+     };
+     led@1 {
+       reg = <1>;
+       function = LED_FUNCTION_INDICATOR;
+       color = <LED_COLOR_ID_GREEN>;
+       led-max-microamp = <24000>;
+     };
+     led@2 {
+       reg = <2>;
+       function = LED_FUNCTION_INDICATOR;
+       color = <LED_COLOR_ID_BLUE>;
+       led-max-microamp = <24000>;
+     };
+     led@3 {
+       reg = <3>;
+       function = LED_FUNCTION_MOONLIGHT;
+       color = <LED_COLOR_ID_WHITE>;
+       led-max-microamp = <150000>;
+     };
+     led@4 {
+       reg = <4>;
+       function = LED_FUNCTION_FLASH;
+       color = <LED_COLOR_ID_WHITE>;
+       function-enumerator = <1>;
+       led-max-microamp = <200000>;
+       flash-max-microamp = <500000>;
+       flash-max-timeout-us = <1024000>;
+     };
+     led@5 {
+       reg = <5>;
+       function = LED_FUNCTION_FLASH;
+       color = <LED_COLOR_ID_WHITE>;
+       function-enumerator = <2>;
+       led-max-microamp = <200000>;
+       flash-max-microamp = <500000>;
+       flash-max-timeout-us = <1024000>;
+     };
+   };
+...
-- 
2.7.4

[PATCH v13 5/5] leds: mt6360: Add LED driver for MT6360

[Gene Chen]

From: Gene Chen <gene_chen@richtek.com>

Add MT6360 LED driver include 2-channel Flash LED with torch/strobe mode,
3-channel RGB LED support Register/Flash/Breath Mode, and 1-channel for
moonlight LED.

Signed-off-by: Gene Chen <gene_chen@richtek.com>
---
 drivers/leds/Kconfig       |  13 +
 drivers/leds/Makefile      |   1 +
 drivers/leds/leds-mt6360.c | 827 +++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 841 insertions(+)
 create mode 100644 drivers/leds/leds-mt6360.c

diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig
index 1c181df..4f533bc 100644
--- a/drivers/leds/Kconfig
+++ b/drivers/leds/Kconfig
@@ -271,6 +271,19 @@ config LEDS_MT6323
 	  This option enables support for on-chip LED drivers found on
 	  Mediatek MT6323 PMIC.
 
+config LEDS_MT6360
+	tristate "LED Support for Mediatek MT6360 PMIC"
+	depends on LEDS_CLASS && OF
+	depends on LEDS_CLASS_FLASH || !LEDS_CLASS_FLASH
+	depends on LEDS_CLASS_MULTICOLOR || !LEDS_CLASS_MULTICOLOR
+	depends on V4L2_FLASH_LED_CLASS || !V4L2_FLASH_LED_CLASS
+	depends on MFD_MT6360
+	help
+	  This option enables support for dual Flash LED drivers found on
+	  Mediatek MT6360 PMIC.
+	  Independent current sources supply for each flash LED support torch
+	  and strobe mode.
+
 config LEDS_S3C24XX
 	tristate "LED Support for Samsung S3C24XX GPIO LEDs"
 	depends on LEDS_CLASS
diff --git a/drivers/leds/Makefile b/drivers/leds/Makefile
index c2c7d7a..5596427 100644
--- a/drivers/leds/Makefile
+++ b/drivers/leds/Makefile
@@ -66,6 +66,7 @@ obj-$(CONFIG_LEDS_MIKROTIK_RB532)	+= leds-rb532.o
 obj-$(CONFIG_LEDS_MLXCPLD)		+= leds-mlxcpld.o
 obj-$(CONFIG_LEDS_MLXREG)		+= leds-mlxreg.o
 obj-$(CONFIG_LEDS_MT6323)		+= leds-mt6323.o
+obj-$(CONFIG_LEDS_MT6360)		+= leds-mt6360.o
 obj-$(CONFIG_LEDS_NET48XX)		+= leds-net48xx.o
 obj-$(CONFIG_LEDS_NETXBIG)		+= leds-netxbig.o
 obj-$(CONFIG_LEDS_NIC78BX)		+= leds-nic78bx.o
diff --git a/drivers/leds/leds-mt6360.c b/drivers/leds/leds-mt6360.c
new file mode 100644
index 0000000..b485e05
--- /dev/null
+++ b/drivers/leds/leds-mt6360.c
@@ -0,0 +1,827 @@
+// SPDX-License-Identifier: GPL-2.0-only
+
+#include <linux/bitops.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/led-class-flash.h>
+#include <linux/led-class-multicolor.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/platform_device.h>
+#include <linux/property.h>
+#include <linux/regmap.h>
+#include <media/v4l2-flash-led-class.h>
+
+enum {
+	MT6360_LED_ISNK1 = 0,
+	MT6360_LED_ISNK2,
+	MT6360_LED_ISNK3,
+	MT6360_LED_ISNKML,
+	MT6360_LED_FLASH1,
+	MT6360_LED_FLASH2,
+	MT6360_MAX_LEDS
+};
+
+#define MT6360_REG_RGBEN		0x380
+#define MT6360_REG_ISNK(_led_no)	(0x381 + (_led_no))
+#define MT6360_ISNK_ENMASK(_led_no)	BIT(7 - (_led_no))
+#define MT6360_ISNK_MASK		GENMASK(4, 0)
+#define MT6360_CHRINDSEL_MASK		BIT(3)
+
+/* Virtual definition for multicolor */
+#define MT6360_VIRTUAL_MULTICOLOR	(MT6360_MAX_LEDS + 1)
+#define MULTICOLOR_NUM_CHANNELS		3
+
+#define MT6360_REG_FLEDEN		0x37E
+#define MT6360_REG_STRBTO		0x373
+#define MT6360_REG_FLEDBASE(_id)	(0x372 + 4 * (_id - MT6360_LED_FLASH1))
+#define MT6360_REG_FLEDISTRB(_id)	(MT6360_REG_FLEDBASE(_id) + 2)
+#define MT6360_REG_FLEDITOR(_id)	(MT6360_REG_FLEDBASE(_id) + 3)
+#define MT6360_REG_CHGSTAT2		0x3E1
+#define MT6360_REG_FLEDSTAT1		0x3E9
+#define MT6360_ITORCH_MASK		GENMASK(4, 0)
+#define MT6360_ISTROBE_MASK		GENMASK(6, 0)
+#define MT6360_STRBTO_MASK		GENMASK(6, 0)
+#define MT6360_TORCHEN_MASK		BIT(3)
+#define MT6360_STROBEN_MASK		BIT(2)
+#define MT6360_FLCSEN_MASK(_id)		BIT(MT6360_LED_FLASH2 - _id)
+#define MT6360_FLEDCHGVINOVP_MASK	BIT(3)
+#define MT6360_FLED1STRBTO_MASK		BIT(11)
+#define MT6360_FLED2STRBTO_MASK		BIT(10)
+#define MT6360_FLED1STRB_MASK		BIT(9)
+#define MT6360_FLED2STRB_MASK		BIT(8)
+#define MT6360_FLED1SHORT_MASK		BIT(7)
+#define MT6360_FLED2SHORT_MASK		BIT(6)
+#define MT6360_FLEDLVF_MASK		BIT(3)
+
+#define MT6360_ISNKRGB_STEPUA		2000
+#define MT6360_ISNKRGB_MAXUA		24000
+#define MT6360_ISNKML_STEPUA		5000
+#define MT6360_ISNKML_MAXUA		150000
+
+#define MT6360_ITORCH_MINUA		25000
+#define MT6360_ITORCH_STEPUA		12500
+#define MT6360_ITORCH_MAXUA		400000
+#define MT6360_ISTRB_MINUA		50000
+#define MT6360_ISTRB_STEPUA		12500
+#define MT6360_ISTRB_MAXUA		1500000
+#define MT6360_STRBTO_MINUS		64000
+#define MT6360_STRBTO_STEPUS		32000
+#define MT6360_STRBTO_MAXUS		2432000
+
+#define STATE_OFF			0
+#define STATE_KEEP			1
+#define STATE_ON			2
+
+struct mt6360_led {
+	union {
+		struct led_classdev isnk;
+		struct led_classdev_mc mc;
+		struct led_classdev_flash flash;
+	};
+	struct v4l2_flash *v4l2_flash;
+	struct mt6360_priv *priv;
+	u32 led_no;
+	u32 default_state;
+};
+
+struct mt6360_priv {
+	struct device *dev;
+	struct regmap *regmap;
+	struct mutex lock;
+	unsigned int fled_strobe_used;
+	unsigned int fled_torch_used;
+	unsigned int leds_active;
+	unsigned int leds_count;
+	struct mt6360_led leds[];
+};
+
+static int mt6360_mc_brightness_set(struct led_classdev *lcdev, enum led_brightness level)
+{
+	struct led_classdev_mc *mccdev = lcdev_to_mccdev(lcdev);
+	struct mt6360_led *led = container_of(mccdev, struct mt6360_led, mc);
+	struct mt6360_priv *priv = led->priv;
+	u32 real_bright, enable_mask = 0, enable = 0;
+	int i, ret;
+
+	mutex_lock(&priv->lock);
+
+	led_mc_calc_color_components(mccdev, level);
+
+	for (i = 0; i < mccdev->num_colors; i++) {
+		struct mc_subled *subled = mccdev->subled_info + i;
+
+		real_bright = min(lcdev->max_brightness, subled->brightness);
+		ret = regmap_update_bits(priv->regmap, MT6360_REG_ISNK(i), MT6360_ISNK_MASK,
+					 real_bright);
+		if (ret)
+			goto out;
+
+		enable_mask |= MT6360_ISNK_ENMASK(subled->channel);
+		if (real_bright)
+			enable |= MT6360_ISNK_ENMASK(subled->channel);
+	}
+
+	ret = regmap_update_bits(priv->regmap, MT6360_REG_RGBEN, enable_mask, enable);
+
+out:
+	mutex_unlock(&priv->lock);
+	return ret;
+}
+
+static int mt6360_isnk_brightness_set(struct led_classdev *lcdev, enum led_brightness level)
+{
+	struct mt6360_led *led = container_of(lcdev, struct mt6360_led, isnk);
+	struct mt6360_priv *priv = led->priv;
+	u32 enable_mask = MT6360_ISNK_ENMASK(led->led_no);
+	u32 val = level ? MT6360_ISNK_ENMASK(led->led_no) : 0;
+	int ret;
+
+	mutex_lock(&priv->lock);
+
+	ret = regmap_update_bits(priv->regmap, MT6360_REG_ISNK(led->led_no), MT6360_ISNK_MASK,
+				 level);
+	if (ret)
+		goto out;
+
+	ret = regmap_update_bits(priv->regmap, MT6360_REG_RGBEN, enable_mask, val);
+
+out:
+	mutex_unlock(&priv->lock);
+	return ret;
+}
+
+static int mt6360_torch_brightness_set(struct led_classdev *lcdev, enum led_brightness level)
+{
+	struct mt6360_led *led = container_of(lcdev, struct mt6360_led, flash.led_cdev);
+	struct mt6360_priv *priv = led->priv;
+	u32 enable_mask = MT6360_TORCHEN_MASK | MT6360_FLCSEN_MASK(led->led_no);
+	u32 val = level ? MT6360_FLCSEN_MASK(led->led_no) : 0;
+	u32 prev = priv->fled_torch_used, curr;
+	int ret;
+
+	mutex_lock(&priv->lock);
+
+	/* Only one set of flash control logic, use the flag to avoid strobe is currently used */
+	if (priv->fled_strobe_used) {
+		dev_warn(lcdev->dev, "Please disable strobe first [%d]\n", priv->fled_strobe_used);
+		ret = -EBUSY;
+		goto unlock;
+	}
+
+	if (level)
+		curr = prev | BIT(led->led_no);
+	else
+		curr = prev & ~BIT(led->led_no);
+
+	if (curr)
+		val |= MT6360_TORCHEN_MASK;
+
+	if (level) {
+		ret = regmap_update_bits(priv->regmap, MT6360_REG_FLEDITOR(led->led_no),
+					 MT6360_ITORCH_MASK, level - 1);
+		if (ret)
+			goto unlock;
+	}
+
+	ret = regmap_update_bits(priv->regmap, MT6360_REG_FLEDEN, enable_mask, val);
+	if (ret)
+		goto unlock;
+
+	priv->fled_torch_used = curr;
+
+unlock:
+	mutex_unlock(&priv->lock);
+	return ret;
+}
+
+static int mt6360_flash_brightness_set(struct led_classdev_flash *fl_cdev, u32 brightness)
+{
+	/*
+	 * Due to the current spike when turning on flash, let brightness to be kept by framework.
+	 * This empty function is used to prevent led_classdev_flash register ops check failure.
+	 */
+	return 0;
+}
+
+static int _mt6360_flash_brightness_set(struct led_classdev_flash *fl_cdev, u32 brightness)
+{
+	struct mt6360_led *led = container_of(fl_cdev, struct mt6360_led, flash);
+	struct mt6360_priv *priv = led->priv;
+	struct led_flash_setting *s = &fl_cdev->brightness;
+	u32 val = (brightness - s->min) / s->step;
+
+	return regmap_update_bits(priv->regmap, MT6360_REG_FLEDISTRB(led->led_no),
+				 MT6360_ISTROBE_MASK, val);
+}
+
+static int mt6360_strobe_set(struct led_classdev_flash *fl_cdev, bool state)
+{
+	struct mt6360_led *led = container_of(fl_cdev, struct mt6360_led, flash);
+	struct mt6360_priv *priv = led->priv;
+	struct led_classdev *lcdev = &fl_cdev->led_cdev;
+	struct led_flash_setting *s = &fl_cdev->brightness;
+	u32 enable_mask = MT6360_STROBEN_MASK | MT6360_FLCSEN_MASK(led->led_no);
+	u32 val = state ? MT6360_FLCSEN_MASK(led->led_no) : 0;
+	u32 prev = priv->fled_strobe_used, curr;
+	int ret;
+
+	mutex_lock(&priv->lock);
+
+	/* Only one set of flash control logic, use the flag to avoid torch is currently used */
+	if (priv->fled_torch_used) {
+		dev_warn(lcdev->dev, "Please disable torch first [0x%x]\n", priv->fled_torch_used);
+		ret = -EBUSY;
+		goto unlock;
+	}
+
+	if (state)
+		curr = prev | BIT(led->led_no);
+	else
+		curr = prev & ~BIT(led->led_no);
+
+	if (curr)
+		val |= MT6360_STROBEN_MASK;
+
+	ret = regmap_update_bits(priv->regmap, MT6360_REG_FLEDEN, enable_mask, val);
+	if (ret) {
+		dev_err(lcdev->dev, "[%d] control current source %d fail\n", led->led_no, state);
+		goto unlock;
+	}
+
+	/*
+	 * If the flash need to be on, config the flash current ramping up to the setting value
+	 * Else, always recover back to the minimum one
+	 */
+	ret = _mt6360_flash_brightness_set(fl_cdev, state ? s->val : s->min);
+	if (ret)
+		goto unlock;
+
+	/* For the flash turn on/off, HW rampping up/down time is 5ms/500us, respectively */
+	if (!prev && curr)
+		usleep_range(5000, 6000);
+	else if (prev && !curr)
+		udelay(500);
+
+	priv->fled_strobe_used = curr;
+
+unlock:
+	mutex_unlock(&priv->lock);
+	return ret;
+}
+
+static int mt6360_strobe_get(struct led_classdev_flash *fl_cdev, bool *state)
+{
+	struct mt6360_led *led = container_of(fl_cdev, struct mt6360_led, flash);
+	struct mt6360_priv *priv = led->priv;
+
+	mutex_lock(&priv->lock);
+	*state = !!(priv->fled_strobe_used & BIT(led->led_no));
+	mutex_unlock(&priv->lock);
+
+	return 0;
+}
+
+static int mt6360_timeout_set(struct led_classdev_flash *fl_cdev, u32 timeout)
+{
+	struct mt6360_led *led = container_of(fl_cdev, struct mt6360_led, flash);
+	struct mt6360_priv *priv = led->priv;
+	struct led_flash_setting *s = &fl_cdev->timeout;
+	u32 val = (timeout - s->min) / s->step;
+	int ret;
+
+	mutex_lock(&priv->lock);
+	ret = regmap_update_bits(priv->regmap, MT6360_REG_STRBTO, MT6360_STRBTO_MASK, val);
+	mutex_unlock(&priv->lock);
+
+	return ret;
+}
+
+static int mt6360_fault_get(struct led_classdev_flash *fl_cdev, u32 *fault)
+{
+	struct mt6360_led *led = container_of(fl_cdev, struct mt6360_led, flash);
+	struct mt6360_priv *priv = led->priv;
+	u16 fled_stat;
+	unsigned int chg_stat, strobe_timeout_mask, fled_short_mask;
+	u32 rfault = 0;
+	int ret;
+
+	mutex_lock(&priv->lock);
+	ret = regmap_read(priv->regmap, MT6360_REG_CHGSTAT2, &chg_stat);
+	if (ret)
+		goto unlock;
+
+	ret = regmap_raw_read(priv->regmap, MT6360_REG_FLEDSTAT1, &fled_stat, sizeof(fled_stat));
+	if (ret)
+		goto unlock;
+
+	if (led->led_no == MT6360_LED_FLASH1) {
+		strobe_timeout_mask = MT6360_FLED1STRBTO_MASK;
+		fled_short_mask = MT6360_FLED1SHORT_MASK;
+	} else {
+		strobe_timeout_mask = MT6360_FLED2STRBTO_MASK;
+		fled_short_mask = MT6360_FLED2SHORT_MASK;
+	}
+
+	if (chg_stat & MT6360_FLEDCHGVINOVP_MASK)
+		rfault |= LED_FAULT_INPUT_VOLTAGE;
+
+	if (fled_stat & strobe_timeout_mask)
+		rfault |= LED_FAULT_TIMEOUT;
+
+	if (fled_stat & fled_short_mask)
+		rfault |= LED_FAULT_SHORT_CIRCUIT;
+
+	if (fled_stat & MT6360_FLEDLVF_MASK)
+		rfault |= LED_FAULT_UNDER_VOLTAGE;
+
+	*fault = rfault;
+unlock:
+	mutex_unlock(&priv->lock);
+	return ret;
+}
+
+static const struct led_flash_ops mt6360_flash_ops = {
+	.flash_brightness_set = mt6360_flash_brightness_set,
+	.strobe_set = mt6360_strobe_set,
+	.strobe_get = mt6360_strobe_get,
+	.timeout_set = mt6360_timeout_set,
+	.fault_get = mt6360_fault_get,
+};
+
+static int mt6360_isnk_init_default_state(struct mt6360_led *led)
+{
+	struct mt6360_priv *priv = led->priv;
+	unsigned int regval;
+	u32 level;
+	int ret;
+
+	ret = regmap_read(priv->regmap, MT6360_REG_ISNK(led->led_no), &regval);
+	if (ret)
+		return ret;
+	level = regval & MT6360_ISNK_MASK;
+
+	ret = regmap_read(priv->regmap, MT6360_REG_RGBEN, &regval);
+	if (ret)
+		return ret;
+
+	if (!(regval & MT6360_ISNK_ENMASK(led->led_no)))
+		level = LED_OFF;
+
+	switch (led->default_state) {
+	case STATE_ON:
+		led->isnk.brightness = led->isnk.max_brightness;
+		break;
+	case STATE_KEEP:
+		led->isnk.brightness = min(level, led->isnk.max_brightness);
+		break;
+	default:
+		led->isnk.brightness = LED_OFF;
+	}
+
+	return mt6360_isnk_brightness_set(&led->isnk, led->isnk.brightness);
+}
+
+static int mt6360_flash_init_default_state(struct mt6360_led *led)
+{
+	struct led_classdev_flash *flash = &led->flash;
+	struct mt6360_priv *priv = led->priv;
+	u32 enable_mask = MT6360_TORCHEN_MASK | MT6360_FLCSEN_MASK(led->led_no);
+	u32 level;
+	unsigned int regval;
+	int ret;
+
+	ret = regmap_read(priv->regmap, MT6360_REG_FLEDITOR(led->led_no), &regval);
+	if (ret)
+		return ret;
+	level = regval & MT6360_ITORCH_MASK;
+
+	ret = regmap_read(priv->regmap, MT6360_REG_FLEDEN, &regval);
+	if (ret)
+		return ret;
+
+	if ((regval & enable_mask) == enable_mask)
+		level += 1;
+	else
+		level = LED_OFF;
+
+	switch (led->default_state) {
+	case STATE_ON:
+		flash->led_cdev.brightness = flash->led_cdev.max_brightness;
+		break;
+	case STATE_KEEP:
+		flash->led_cdev.brightness = min(level, flash->led_cdev.max_brightness);
+		break;
+	default:
+		flash->led_cdev.brightness = LED_OFF;
+	}
+
+	return mt6360_torch_brightness_set(&flash->led_cdev, flash->led_cdev.brightness);
+}
+
+#if IS_ENABLED(CONFIG_V4L2_FLASH_LED_CLASS)
+static int mt6360_flash_external_strobe_set(struct v4l2_flash *v4l2_flash, bool enable)
+{
+	struct led_classdev_flash *flash = v4l2_flash->fled_cdev;
+	struct mt6360_led *led = container_of(flash, struct mt6360_led, flash);
+	struct mt6360_priv *priv = led->priv;
+	u32 mask = MT6360_FLCSEN_MASK(led->led_no);
+	u32 val = enable ? mask : 0;
+	int ret;
+
+	mutex_lock(&priv->lock);
+
+	ret = regmap_update_bits(priv->regmap, MT6360_REG_FLEDEN, mask, val);
+	if (ret)
+		goto unlock;
+
+	if (enable)
+		priv->fled_strobe_used |= BIT(led->led_no);
+	else
+		priv->fled_strobe_used &= ~BIT(led->led_no);
+
+unlock:
+	mutex_unlock(&priv->lock);
+	return ret;
+}
+
+static const struct v4l2_flash_ops v4l2_flash_ops = {
+	.external_strobe_set = mt6360_flash_external_strobe_set,
+};
+
+static void mt6360_init_v4l2_flash_config(struct mt6360_led *led, struct v4l2_flash_config *config)
+{
+	struct led_classdev *lcdev;
+	struct led_flash_setting *s = &config->intensity;
+
+	lcdev = &led->flash.led_cdev;
+
+	s->min = MT6360_ITORCH_MINUA;
+	s->step = MT6360_ITORCH_STEPUA;
+	s->val = s->max = s->min + (lcdev->max_brightness - 1) * s->step;
+
+	config->has_external_strobe = 1;
+	strscpy(config->dev_name, lcdev->dev->kobj.name, sizeof(config->dev_name));
+
+	config->flash_faults = LED_FAULT_SHORT_CIRCUIT | LED_FAULT_TIMEOUT |
+			       LED_FAULT_INPUT_VOLTAGE | LED_FAULT_UNDER_VOLTAGE;
+}
+#else
+static const struct v4l2_flash_ops v4l2_flash_ops;
+static void mt6360_init_v4l2_flash_config(struct mt6360_led *led, struct v4l2_flash_config *config)
+{
+}
+#endif
+
+static int mt6360_led_register(struct device *parent, struct mt6360_led *led,
+				struct led_init_data *init_data)
+{
+	struct mt6360_priv *priv = led->priv;
+	struct v4l2_flash_config v4l2_config = {0};
+	int ret;
+
+	if ((led->led_no == MT6360_LED_ISNK1 || led->led_no == MT6360_VIRTUAL_MULTICOLOR) &&
+		(priv->leds_active & BIT(MT6360_LED_ISNK1))) {
+		/* Change isink1 to SW control mode, disconnect it with charger state */
+		ret = regmap_update_bits(priv->regmap, MT6360_REG_RGBEN, MT6360_CHRINDSEL_MASK,
+					 MT6360_CHRINDSEL_MASK);
+		if (ret) {
+			dev_err(parent, "Failed to config ISNK1 to SW mode\n");
+			return ret;
+		}
+	}
+
+	switch (led->led_no) {
+	case MT6360_VIRTUAL_MULTICOLOR:
+		ret = mt6360_mc_brightness_set(&led->mc.led_cdev, LED_OFF);
+		if (ret) {
+			dev_err(parent, "Failed to init multicolor brightness\n");
+			return ret;
+		}
+
+		ret = devm_led_classdev_multicolor_register_ext(parent, &led->mc, init_data);
+		if (ret) {
+			dev_err(parent, "Couldn't register multicolor\n");
+			return ret;
+		}
+		break;
+	case MT6360_LED_ISNK1 ... MT6360_LED_ISNKML:
+		ret = mt6360_isnk_init_default_state(led);
+		if (ret) {
+			dev_err(parent, "Failed to init %d isnk state\n", led->led_no);
+			return ret;
+		}
+
+		ret = devm_led_classdev_register_ext(parent, &led->isnk, init_data);
+		if (ret) {
+			dev_err(parent, "Couldn't register isink %d\n", led->led_no);
+			return ret;
+		}
+		break;
+	default:
+		ret = mt6360_flash_init_default_state(led);
+		if (ret) {
+			dev_err(parent, "Failed to init %d flash state\n", led->led_no);
+			return ret;
+		}
+
+		ret = devm_led_classdev_flash_register_ext(parent, &led->flash, init_data);
+		if (ret) {
+			dev_err(parent, "Couldn't register flash %d\n", led->led_no);
+			return ret;
+		}
+
+		mt6360_init_v4l2_flash_config(led, &v4l2_config);
+		led->v4l2_flash = v4l2_flash_init(parent, init_data->fwnode, &led->flash,
+						  &v4l2_flash_ops, &v4l2_config);
+		if (IS_ERR(led->v4l2_flash)) {
+			dev_err(parent, "Failed to register %d v4l2 sd\n", led->led_no);
+			return PTR_ERR(led->v4l2_flash);
+		}
+	}
+
+	return 0;
+}
+
+static u32 clamp_align(u32 val, u32 min, u32 max, u32 step)
+{
+	u32 retval;
+
+	retval = clamp_val(val, min, max);
+	if (step > 1)
+		retval = rounddown(retval - min, step) + min;
+
+	return retval;
+}
+
+static int mt6360_init_isnk_properties(struct mt6360_led *led, struct led_init_data *init_data)
+{
+	struct led_classdev *lcdev;
+	struct mt6360_priv *priv = led->priv;
+	struct fwnode_handle *child;
+	u32 step_uA = MT6360_ISNKRGB_STEPUA, max_uA = MT6360_ISNKRGB_MAXUA;
+	u32 val;
+	int num_color = 0, ret;
+
+	if (led->led_no == MT6360_VIRTUAL_MULTICOLOR) {
+		struct mc_subled *sub_led;
+
+		sub_led = devm_kzalloc(priv->dev, sizeof(*sub_led) * MULTICOLOR_NUM_CHANNELS,
+				       GFP_KERNEL);
+		if (!sub_led)
+			return -ENOMEM;
+
+		fwnode_for_each_child_node(init_data->fwnode, child) {
+			u32 reg, color;
+
+			ret = fwnode_property_read_u32(child, "reg", &reg);
+			if (ret || reg > MT6360_LED_ISNK3 || priv->leds_active & BIT(reg))
+				return -EINVAL;
+
+			ret = fwnode_property_read_u32(child, "color", &color);
+			if (ret) {
+				dev_err(priv->dev, "led %d, no color specified\n", led->led_no);
+				return ret;
+			}
+
+			priv->leds_active |= BIT(reg);
+			sub_led[num_color].color_index = color;
+			sub_led[num_color].channel = reg;
+			num_color++;
+		}
+
+		if (num_color < 2) {
+			dev_err(priv->dev, "Multicolor must include 2 or more led channel\n");
+			return -EINVAL;
+		}
+
+		led->mc.num_colors = num_color;
+		led->mc.subled_info = sub_led;
+
+		lcdev = &led->mc.led_cdev;
+		lcdev->brightness_set_blocking = mt6360_mc_brightness_set;
+	} else {
+		if (led->led_no == MT6360_LED_ISNKML) {
+			step_uA = MT6360_ISNKML_STEPUA;
+			max_uA = MT6360_ISNKML_MAXUA;
+		}
+
+		lcdev = &led->isnk;
+		lcdev->brightness_set_blocking = mt6360_isnk_brightness_set;
+	}
+
+	ret = fwnode_property_read_u32(init_data->fwnode, "led-max-microamp", &val);
+	if (ret) {
+		dev_warn(priv->dev, "Not specified led-max-microamp, config to the minimum\n");
+		val = step_uA;
+	} else
+		val = clamp_align(val, 0, max_uA, step_uA);
+
+	lcdev->max_brightness = val / step_uA;
+
+	fwnode_property_read_string(init_data->fwnode, "linux,default-trigger",
+				    &lcdev->default_trigger);
+
+	return 0;
+}
+
+static int mt6360_init_flash_properties(struct mt6360_led *led, struct led_init_data *init_data)
+{
+	struct led_classdev_flash *flash = &led->flash;
+	struct led_classdev *lcdev = &flash->led_cdev;
+	struct mt6360_priv *priv = led->priv;
+	struct led_flash_setting *s;
+	u32 val;
+	int ret;
+
+	ret = fwnode_property_read_u32(init_data->fwnode, "led-max-microamp", &val);
+	if (ret) {
+		dev_warn(priv->dev, "Not specified led-max-microamp, config to the minimum\n");
+		val = MT6360_ITORCH_MINUA;
+	} else
+		val = clamp_align(val, MT6360_ITORCH_MINUA, MT6360_ITORCH_MAXUA,
+				  MT6360_ITORCH_STEPUA);
+
+	lcdev->max_brightness = (val - MT6360_ITORCH_MINUA) / MT6360_ITORCH_STEPUA + 1;
+	lcdev->brightness_set_blocking = mt6360_torch_brightness_set;
+	lcdev->flags |= LED_DEV_CAP_FLASH;
+
+	ret = fwnode_property_read_u32(init_data->fwnode, "flash-max-microamp", &val);
+	if (ret) {
+		dev_warn(priv->dev, "Not specified flash-max-microamp, config to the minimum\n");
+		val = MT6360_ISTRB_MINUA;
+	} else
+		val = clamp_align(val, MT6360_ISTRB_MINUA, MT6360_ISTRB_MAXUA, MT6360_ISTRB_STEPUA);
+
+	s = &flash->brightness;
+	s->min = MT6360_ISTRB_MINUA;
+	s->step = MT6360_ISTRB_STEPUA;
+	s->val = s->max = val;
+
+	/* Always configure as min level when off to prevent flash current spike */
+	ret = _mt6360_flash_brightness_set(flash, s->min);
+	if (ret)
+		return ret;
+
+	ret = fwnode_property_read_u32(init_data->fwnode, "flash-max-timeout-us", &val);
+	if (ret) {
+		dev_warn(priv->dev, "Not specified flash-max-timeout-us, config to the minimum\n");
+		val = MT6360_STRBTO_MINUS;
+	} else
+		val = clamp_align(val, MT6360_STRBTO_MINUS, MT6360_STRBTO_MAXUS,
+				  MT6360_STRBTO_STEPUS);
+
+	s = &flash->timeout;
+	s->min = MT6360_STRBTO_MINUS;
+	s->step = MT6360_STRBTO_STEPUS;
+	s->val = s->max = val;
+
+	flash->ops = &mt6360_flash_ops;
+
+	return 0;
+}
+
+static int mt6360_init_common_properties(struct mt6360_led *led, struct led_init_data *init_data)
+{
+	const char * const states[] = { "off", "keep", "on" };
+	const char *str;
+	int ret;
+
+	if (!fwnode_property_read_string(init_data->fwnode, "default-state", &str)) {
+		ret = match_string(states, ARRAY_SIZE(states), str);
+		if (ret < 0)
+			ret = STATE_OFF;
+
+		led->default_state = ret;
+	}
+
+	return 0;
+}
+
+static void mt6360_v4l2_flash_release(struct mt6360_priv *priv)
+{
+	int i;
+
+	for (i = 0; i < priv->leds_count; i++) {
+		struct mt6360_led *led = priv->leds + i;
+
+		if (led->v4l2_flash)
+			v4l2_flash_release(led->v4l2_flash);
+	}
+}
+
+static int mt6360_led_probe(struct platform_device *pdev)
+{
+	struct mt6360_priv *priv;
+	struct fwnode_handle *child;
+	size_t count;
+	int i = 0, ret;
+
+	count = device_get_child_node_count(&pdev->dev);
+	if (!count || count > MT6360_MAX_LEDS) {
+		dev_err(&pdev->dev, "No child node or node count over max led number %zu\n", count);
+		return -EINVAL;
+	}
+
+	priv = devm_kzalloc(&pdev->dev, struct_size(priv, leds, count), GFP_KERNEL);
+	if (!priv)
+		return -ENOMEM;
+
+	priv->leds_count = count;
+	priv->dev = &pdev->dev;
+	mutex_init(&priv->lock);
+
+	priv->regmap = dev_get_regmap(pdev->dev.parent, NULL);
+	if (!priv->regmap) {
+		dev_err(&pdev->dev, "Failed to get parent regmap\n");
+		return -ENODEV;
+	}
+
+	device_for_each_child_node(&pdev->dev, child) {
+		struct mt6360_led *led = priv->leds + i;
+		struct led_init_data init_data = { .fwnode = child, };
+		u32 reg, led_color;
+
+		ret = fwnode_property_read_u32(child, "color", &led_color);
+		if (ret)
+			goto out_flash_release;
+
+		if (led_color == LED_COLOR_ID_RGB || led_color == LED_COLOR_ID_MULTI)
+			reg = MT6360_VIRTUAL_MULTICOLOR;
+		else {
+			ret = fwnode_property_read_u32(child, "reg", &reg);
+			if (ret)
+				goto out_flash_release;
+
+			if (reg >= MT6360_MAX_LEDS) {
+				ret = -EINVAL;
+				goto out_flash_release;
+			}
+		}
+
+		if (priv->leds_active & BIT(reg)) {
+			ret = -EINVAL;
+			goto out_flash_release;
+		}
+		priv->leds_active |= BIT(reg);
+
+		led->led_no = reg;
+		led->priv = priv;
+
+		ret = mt6360_init_common_properties(led, &init_data);
+		if (ret)
+			goto out_flash_release;
+
+		if (reg == MT6360_VIRTUAL_MULTICOLOR ||
+			(reg >= MT6360_LED_ISNK1 && reg <= MT6360_LED_ISNKML))
+			ret = mt6360_init_isnk_properties(led, &init_data);
+		else
+			ret = mt6360_init_flash_properties(led, &init_data);
+
+		if (ret)
+			goto out_flash_release;
+
+		ret = mt6360_led_register(&pdev->dev, led, &init_data);
+		if (ret)
+			goto out_flash_release;
+
+		i++;
+	}
+
+	platform_set_drvdata(pdev, priv);
+	return 0;
+
+out_flash_release:
+	mt6360_v4l2_flash_release(priv);
+	return ret;
+}
+
+static int mt6360_led_remove(struct platform_device *pdev)
+{
+	struct mt6360_priv *priv = platform_get_drvdata(pdev);
+
+	mt6360_v4l2_flash_release(priv);
+	return 0;
+}
+
+static const struct of_device_id __maybe_unused mt6360_led_of_id[] = {
+	{ .compatible = "mediatek,mt6360-led", },
+	{}
+};
+MODULE_DEVICE_TABLE(of, mt6360_led_of_id);
+
+static struct platform_driver mt6360_led_driver = {
+	.driver = {
+		.name = "mt6360-led",
+		.of_match_table = mt6360_led_of_id,
+	},
+	.probe = mt6360_led_probe,
+	.remove = mt6360_led_remove,
+};
+module_platform_driver(mt6360_led_driver);
+
+MODULE_AUTHOR("Gene Chen <gene_chen@richtek.com>");
+MODULE_DESCRIPTION("MT6360 LED Driver");
+MODULE_LICENSE("GPL v2");
-- 
2.7.4

Re: [PATCH v13 5/5] leds: mt6360: Add LED driver for MT6360

[Matthias Brugger]

On 21/12/2020 11:45, Gene Chen wrote:
> From: Gene Chen <gene_chen@richtek.com>
[...]
> +
> +static const struct of_device_id __maybe_unused mt6360_led_of_id[] = {
> +	{ .compatible = "mediatek,mt6360-led", },
> +	{}
> +};
> +MODULE_DEVICE_TABLE(of, mt6360_led_of_id);
> +

I think we should fix MFD code to not need to use a DT binding here. See [1].

Regards,
Matthias

[1] https://lore.kernel.org/linux-mediatek/20210111164118.GE4728@sirena.org.uk/


> +static struct platform_driver mt6360_led_driver = {
> +	.driver = {
> +		.name = "mt6360-led",
> +		.of_match_table = mt6360_led_of_id,
> +	},
> +	.probe = mt6360_led_probe,
> +	.remove = mt6360_led_remove,
> +};
> +module_platform_driver(mt6360_led_driver);
> +
> +MODULE_AUTHOR("Gene Chen <gene_chen@richtek.com>");
> +MODULE_DESCRIPTION("MT6360 LED Driver");
> +MODULE_LICENSE("GPL v2");
> 

Re: [PATCH v13 5/5] leds: mt6360: Add LED driver for MT6360

[Pavel Machek]

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Hi!

> From: Gene Chen <gene_chen@richtek.com>
> 
> Add MT6360 LED driver include 2-channel Flash LED with torch/strobe mode,
> 3-channel RGB LED support Register/Flash/Breath Mode, and 1-channel for
> moonlight LED.

What kind of ninja mutant hardware is this?

Can we make this go to  drivers/leds/flash?

> +static int mt6360_flash_brightness_set(struct led_classdev_flash *fl_cdev, u32 brightness)
> +{
> +	/*
> +	 * Due to the current spike when turning on flash, let brightness to be kept by framework.
> +	 * This empty function is used to prevent led_classdev_flash register ops check failure.
> +	 */

Please stick to 80 columns.

> +static int mt6360_init_common_properties(struct mt6360_led *led, struct led_init_data *init_data)
> +{
> +	const char * const states[] = { "off", "keep", "on" };

No need for space between * and const.

Best regards,
									Pavel

-- 
http://www.livejournal.com/~pavelmachek

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