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* [PATCH v30 00/16] Multicolor Framework v30
@ 2020-07-13 15:45 Dan Murphy
  2020-07-13 15:45 ` [PATCH v30 01/16] leds: lp55xx: Fix file permissions to use DEVICE_ATTR macros Dan Murphy
                   ` (15 more replies)
  0 siblings, 16 replies; 27+ messages in thread
From: Dan Murphy @ 2020-07-13 15:45 UTC (permalink / raw)
  To: jacek.anaszewski, pavel, robh, marek.behun
  Cc: devicetree, linux-leds, linux-kernel, linux-arm-kernel, Dan Murphy

Hello

This is the multi color LED framework.   This framework presents clustered
colored LEDs into an array and allows the user space to adjust the brightness
of the cluster using a single file write.  The individual colored LEDs
intensities are controlled via a single file that is an array of LEDs

Fixed documentation, removed adding a space when reading intensity and index,
update LP50xx to store trigger directly into led_cdev added RB's by Rob H.

Dan

Dan Murphy (16):
  leds: lp55xx: Fix file permissions to use DEVICE_ATTR macros
  leds: lp5523: Fix various formatting issues in the code
  dt: bindings: Add multicolor class dt bindings documention
  leds: Add multicolor ID to the color ID list
  leds: multicolor: Introduce a multicolor class definition
  dt: bindings: lp50xx: Introduce the lp50xx family of RGB drivers
  leds: lp50xx: Add the LP50XX family of the RGB LED driver
  dt-bindings: leds: Convert leds-lp55xx to yaml
  leds: lp55xx: Convert LED class registration to devm_*
  leds: lp55xx: Add multicolor framework support to lp55xx
  ARM: defconfig: u8500: Add LP55XX_COMMON config flag
  leds: lp5523: Update the lp5523 code to add multicolor brightness
    function
  leds: lp5521: Add multicolor framework multicolor brightness support
  ARM: dts: n900: Add reg property to the LP5523 channel node
  ARM: dts: imx6dl-yapp4: Add reg property to the lp5562 channel node
  ARM: dts: ste-href: Add reg property to the LP5521 channel nodes

 .../ABI/testing/sysfs-class-led-multicolor    |  35 +
 .../bindings/leds/leds-class-multicolor.yaml  |  37 +
 .../devicetree/bindings/leds/leds-lp50xx.yaml | 130 +++
 .../devicetree/bindings/leds/leds-lp55xx.txt  | 228 -----
 .../devicetree/bindings/leds/leds-lp55xx.yaml | 220 +++++
 Documentation/leds/index.rst                  |   1 +
 Documentation/leds/leds-class-multicolor.rst  |  86 ++
 arch/arm/boot/dts/imx6dl-yapp4-common.dtsi    |  14 +-
 arch/arm/boot/dts/omap3-n900.dts              |  29 +-
 arch/arm/boot/dts/ste-href.dtsi               |  22 +-
 arch/arm/configs/u8500_defconfig              |   1 +
 drivers/leds/Kconfig                          |  32 +-
 drivers/leds/Makefile                         |   2 +
 drivers/leds/led-class-multicolor.c           | 204 +++++
 drivers/leds/led-core.c                       |   1 +
 drivers/leds/leds-lp50xx.c                    | 784 ++++++++++++++++++
 drivers/leds/leds-lp5521.c                    |  43 +-
 drivers/leds/leds-lp5523.c                    |  62 +-
 drivers/leds/leds-lp5562.c                    |  22 +-
 drivers/leds/leds-lp55xx-common.c             | 212 +++--
 drivers/leds/leds-lp55xx-common.h             |  16 +-
 drivers/leds/leds-lp8501.c                    |  23 +-
 include/dt-bindings/leds/common.h             |   3 +-
 include/linux/led-class-multicolor.h          | 121 +++
 include/linux/platform_data/leds-lp55xx.h     |   7 +
 25 files changed, 1975 insertions(+), 360 deletions(-)
 create mode 100644 Documentation/ABI/testing/sysfs-class-led-multicolor
 create mode 100644 Documentation/devicetree/bindings/leds/leds-class-multicolor.yaml
 create mode 100644 Documentation/devicetree/bindings/leds/leds-lp50xx.yaml
 delete mode 100644 Documentation/devicetree/bindings/leds/leds-lp55xx.txt
 create mode 100644 Documentation/devicetree/bindings/leds/leds-lp55xx.yaml
 create mode 100644 Documentation/leds/leds-class-multicolor.rst
 create mode 100644 drivers/leds/led-class-multicolor.c
 create mode 100644 drivers/leds/leds-lp50xx.c
 create mode 100644 include/linux/led-class-multicolor.h

-- 
2.27.0


^ permalink raw reply	[flat|nested] 27+ messages in thread

* [PATCH v30 01/16] leds: lp55xx: Fix file permissions to use DEVICE_ATTR macros
  2020-07-13 15:45 [PATCH v30 00/16] Multicolor Framework v30 Dan Murphy
@ 2020-07-13 15:45 ` Dan Murphy
  2020-07-15 13:19   ` Marek Behún
  2020-07-13 15:45 ` [PATCH v30 02/16] leds: lp5523: Fix various formatting issues in the code Dan Murphy
                   ` (14 subsequent siblings)
  15 siblings, 1 reply; 27+ messages in thread
From: Dan Murphy @ 2020-07-13 15:45 UTC (permalink / raw)
  To: jacek.anaszewski, pavel, robh, marek.behun
  Cc: devicetree, linux-leds, linux-kernel, linux-arm-kernel, Dan Murphy

Fix the checkpatch warnings for the use of the file permission macros.
In converting the file permissions to the DEVICE_ATTR_XX macros the
call back function names needed to be updated within the code.

This means that the lp55xx_ needed to be dropped in the name to keep in
harmony with the ABI documentation.

Acked-by: Pavel Machek <pavel@ucw.cz>
Acked-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
Signed-off-by: Dan Murphy <dmurphy@ti.com>
---
 drivers/leds/leds-lp55xx-common.c | 22 ++++++++++------------
 1 file changed, 10 insertions(+), 12 deletions(-)

diff --git a/drivers/leds/leds-lp55xx-common.c b/drivers/leds/leds-lp55xx-common.c
index 1354965ac866..3d0bc4dcd9f2 100644
--- a/drivers/leds/leds-lp55xx-common.c
+++ b/drivers/leds/leds-lp55xx-common.c
@@ -77,7 +77,7 @@ static int lp55xx_post_init_device(struct lp55xx_chip *chip)
 	return cfg->post_init_device(chip);
 }
 
-static ssize_t lp55xx_show_current(struct device *dev,
+static ssize_t led_current_show(struct device *dev,
 			    struct device_attribute *attr,
 			    char *buf)
 {
@@ -86,7 +86,7 @@ static ssize_t lp55xx_show_current(struct device *dev,
 	return scnprintf(buf, PAGE_SIZE, "%d\n", led->led_current);
 }
 
-static ssize_t lp55xx_store_current(struct device *dev,
+static ssize_t led_current_store(struct device *dev,
 			     struct device_attribute *attr,
 			     const char *buf, size_t len)
 {
@@ -110,7 +110,7 @@ static ssize_t lp55xx_store_current(struct device *dev,
 	return len;
 }
 
-static ssize_t lp55xx_show_max_current(struct device *dev,
+static ssize_t max_current_show(struct device *dev,
 			    struct device_attribute *attr,
 			    char *buf)
 {
@@ -119,9 +119,8 @@ static ssize_t lp55xx_show_max_current(struct device *dev,
 	return scnprintf(buf, PAGE_SIZE, "%d\n", led->max_current);
 }
 
-static DEVICE_ATTR(led_current, S_IRUGO | S_IWUSR, lp55xx_show_current,
-		lp55xx_store_current);
-static DEVICE_ATTR(max_current, S_IRUGO , lp55xx_show_max_current, NULL);
+static DEVICE_ATTR_RW(led_current);
+static DEVICE_ATTR_RO(max_current);
 
 static struct attribute *lp55xx_led_attrs[] = {
 	&dev_attr_led_current.attr,
@@ -224,7 +223,7 @@ static int lp55xx_request_firmware(struct lp55xx_chip *chip)
 				GFP_KERNEL, chip, lp55xx_firmware_loaded);
 }
 
-static ssize_t lp55xx_show_engine_select(struct device *dev,
+static ssize_t select_engine_show(struct device *dev,
 			    struct device_attribute *attr,
 			    char *buf)
 {
@@ -234,7 +233,7 @@ static ssize_t lp55xx_show_engine_select(struct device *dev,
 	return sprintf(buf, "%d\n", chip->engine_idx);
 }
 
-static ssize_t lp55xx_store_engine_select(struct device *dev,
+static ssize_t select_engine_store(struct device *dev,
 			     struct device_attribute *attr,
 			     const char *buf, size_t len)
 {
@@ -276,7 +275,7 @@ static inline void lp55xx_run_engine(struct lp55xx_chip *chip, bool start)
 		chip->cfg->run_engine(chip, start);
 }
 
-static ssize_t lp55xx_store_engine_run(struct device *dev,
+static ssize_t run_engine_store(struct device *dev,
 			     struct device_attribute *attr,
 			     const char *buf, size_t len)
 {
@@ -301,9 +300,8 @@ static ssize_t lp55xx_store_engine_run(struct device *dev,
 	return len;
 }
 
-static DEVICE_ATTR(select_engine, S_IRUGO | S_IWUSR,
-		   lp55xx_show_engine_select, lp55xx_store_engine_select);
-static DEVICE_ATTR(run_engine, S_IWUSR, NULL, lp55xx_store_engine_run);
+static DEVICE_ATTR_RW(select_engine);
+static DEVICE_ATTR_WO(run_engine);
 
 static struct attribute *lp55xx_engine_attributes[] = {
 	&dev_attr_select_engine.attr,
-- 
2.27.0


^ permalink raw reply	[flat|nested] 27+ messages in thread

* [PATCH v30 02/16] leds: lp5523: Fix various formatting issues in the code
  2020-07-13 15:45 [PATCH v30 00/16] Multicolor Framework v30 Dan Murphy
  2020-07-13 15:45 ` [PATCH v30 01/16] leds: lp55xx: Fix file permissions to use DEVICE_ATTR macros Dan Murphy
@ 2020-07-13 15:45 ` Dan Murphy
  2020-07-15 13:20   ` Marek Behún
  2020-07-13 15:45 ` [PATCH v30 03/16] dt: bindings: Add multicolor class dt bindings documention Dan Murphy
                   ` (13 subsequent siblings)
  15 siblings, 1 reply; 27+ messages in thread
From: Dan Murphy @ 2020-07-13 15:45 UTC (permalink / raw)
  To: jacek.anaszewski, pavel, robh, marek.behun
  Cc: devicetree, linux-leds, linux-kernel, linux-arm-kernel, Dan Murphy

Fix checkpatch errors and warnings for the LP5523.c device
driver.

Acked-by: Pavel Machek <pavel@ucw.cz>
Acked-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
Signed-off-by: Dan Murphy <dmurphy@ti.com>
---
 drivers/leds/leds-lp5523.c | 19 ++++++++++---------
 1 file changed, 10 insertions(+), 9 deletions(-)

diff --git a/drivers/leds/leds-lp5523.c b/drivers/leds/leds-lp5523.c
index d0b931a136b9..8518de957b48 100644
--- a/drivers/leds/leds-lp5523.c
+++ b/drivers/leds/leds-lp5523.c
@@ -23,13 +23,13 @@
 
 #define LP5523_PROGRAM_LENGTH		32	/* bytes */
 /* Memory is used like this:
-   0x00 engine 1 program
-   0x10 engine 2 program
-   0x20 engine 3 program
-   0x30 engine 1 muxing info
-   0x40 engine 2 muxing info
-   0x50 engine 3 muxing info
-*/
+ * 0x00 engine 1 program
+ * 0x10 engine 2 program
+ * 0x20 engine 3 program
+ * 0x30 engine 1 muxing info
+ * 0x40 engine 2 muxing info
+ * 0x50 engine 3 muxing info
+ */
 #define LP5523_MAX_LEDS			9
 
 /* Registers */
@@ -326,7 +326,7 @@ static int lp5523_update_program_memory(struct lp55xx_chip *chip,
 					const u8 *data, size_t size)
 {
 	u8 pattern[LP5523_PROGRAM_LENGTH] = {0};
-	unsigned cmd;
+	unsigned int cmd;
 	char c[3];
 	int nrchars;
 	int ret;
@@ -468,6 +468,7 @@ static int lp5523_mux_parse(const char *buf, u16 *mux, size_t len)
 static void lp5523_mux_to_array(u16 led_mux, char *array)
 {
 	int i, pos = 0;
+
 	for (i = 0; i < LP5523_MAX_LEDS; i++)
 		pos += sprintf(array + pos, "%x", LED_ACTIVE(led_mux, i));
 
@@ -506,7 +507,7 @@ static int lp5523_load_mux(struct lp55xx_chip *chip, u16 mux, int nr)
 	if (ret)
 		return ret;
 
-	ret = lp55xx_write(chip, LP5523_REG_PROG_MEM , (u8)(mux >> 8));
+	ret = lp55xx_write(chip, LP5523_REG_PROG_MEM, (u8)(mux >> 8));
 	if (ret)
 		return ret;
 
-- 
2.27.0


^ permalink raw reply	[flat|nested] 27+ messages in thread

* [PATCH v30 03/16] dt: bindings: Add multicolor class dt bindings documention
  2020-07-13 15:45 [PATCH v30 00/16] Multicolor Framework v30 Dan Murphy
  2020-07-13 15:45 ` [PATCH v30 01/16] leds: lp55xx: Fix file permissions to use DEVICE_ATTR macros Dan Murphy
  2020-07-13 15:45 ` [PATCH v30 02/16] leds: lp5523: Fix various formatting issues in the code Dan Murphy
@ 2020-07-13 15:45 ` Dan Murphy
  2020-07-15 13:20   ` Marek Behún
  2020-07-13 15:45 ` [PATCH v30 04/16] leds: Add multicolor ID to the color ID list Dan Murphy
                   ` (12 subsequent siblings)
  15 siblings, 1 reply; 27+ messages in thread
From: Dan Murphy @ 2020-07-13 15:45 UTC (permalink / raw)
  To: jacek.anaszewski, pavel, robh, marek.behun
  Cc: devicetree, linux-leds, linux-kernel, linux-arm-kernel, Dan Murphy

Add DT bindings for the LEDs multicolor class framework.
Add multicolor ID to the color ID list for device tree bindings.

CC: Rob Herring <robh@kernel.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Pavel Machek <pavel@ucw.cz>
Acked-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
Signed-off-by: Dan Murphy <dmurphy@ti.com>
---
 .../bindings/leds/leds-class-multicolor.yaml  | 37 +++++++++++++++++++
 include/dt-bindings/leds/common.h             |  3 +-
 2 files changed, 39 insertions(+), 1 deletion(-)
 create mode 100644 Documentation/devicetree/bindings/leds/leds-class-multicolor.yaml

diff --git a/Documentation/devicetree/bindings/leds/leds-class-multicolor.yaml b/Documentation/devicetree/bindings/leds/leds-class-multicolor.yaml
new file mode 100644
index 000000000000..b55e1f1308a4
--- /dev/null
+++ b/Documentation/devicetree/bindings/leds/leds-class-multicolor.yaml
@@ -0,0 +1,37 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/leds/leds-class-multicolor.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Common properties for the multicolor LED class.
+
+maintainers:
+  - Dan Murphy <dmurphy@ti.com>
+
+description: |
+  Bindings for multi color LEDs show how to describe current outputs of
+  either integrated multi-color LED elements (like RGB, RGBW, RGBWA-UV
+  etc.) or standalone LEDs, to achieve logically grouped multi-color LED
+  modules. This is achieved by adding multi-led nodes layer to the
+  monochrome LED bindings.
+  The nodes and properties defined in this document are unique to the multicolor
+  LED class.  Common LED nodes and properties are inherited from the common.txt
+  within this documentation directory.
+
+patternProperties:
+  "^multi-led@([0-9a-f])$":
+    type: object
+    description: Represents the LEDs that are to be grouped.
+    properties:
+      color:
+        const: 8  # LED_COLOR_ID_MULTI
+        description: |
+          For multicolor LED support this property should be defined as
+          LED_COLOR_ID_MULTI which can be found in include/linux/leds/common.h.
+
+    $ref: "common.yaml#"
+
+    required:
+      - color
+...
diff --git a/include/dt-bindings/leds/common.h b/include/dt-bindings/leds/common.h
index 0ce7dfc00dcb..a463ce6a8794 100644
--- a/include/dt-bindings/leds/common.h
+++ b/include/dt-bindings/leds/common.h
@@ -30,7 +30,8 @@
 #define LED_COLOR_ID_VIOLET	5
 #define LED_COLOR_ID_YELLOW	6
 #define LED_COLOR_ID_IR		7
-#define LED_COLOR_ID_MAX	8
+#define LED_COLOR_ID_MULTI	8
+#define LED_COLOR_ID_MAX	9
 
 /* Standard LED functions */
 /* Keyboard LEDs, usually it would be input4::capslock etc. */
-- 
2.27.0


^ permalink raw reply	[flat|nested] 27+ messages in thread

* [PATCH v30 04/16] leds: Add multicolor ID to the color ID list
  2020-07-13 15:45 [PATCH v30 00/16] Multicolor Framework v30 Dan Murphy
                   ` (2 preceding siblings ...)
  2020-07-13 15:45 ` [PATCH v30 03/16] dt: bindings: Add multicolor class dt bindings documention Dan Murphy
@ 2020-07-13 15:45 ` Dan Murphy
  2020-07-15 13:20   ` Marek Behún
  2020-07-13 15:45 ` [PATCH v30 05/16] leds: multicolor: Introduce a multicolor class definition Dan Murphy
                   ` (11 subsequent siblings)
  15 siblings, 1 reply; 27+ messages in thread
From: Dan Murphy @ 2020-07-13 15:45 UTC (permalink / raw)
  To: jacek.anaszewski, pavel, robh, marek.behun
  Cc: devicetree, linux-leds, linux-kernel, linux-arm-kernel, Dan Murphy

Add a new color ID that is declared as MULTICOLOR as with the
multicolor framework declaring a definitive color is not accurate
as the node can contain multiple colors.

Signed-off-by: Dan Murphy <dmurphy@ti.com>
---
 drivers/leds/led-core.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/leds/led-core.c b/drivers/leds/led-core.c
index f1f718dbe0f8..846248a0693d 100644
--- a/drivers/leds/led-core.c
+++ b/drivers/leds/led-core.c
@@ -34,6 +34,7 @@ const char * const led_colors[LED_COLOR_ID_MAX] = {
 	[LED_COLOR_ID_VIOLET] = "violet",
 	[LED_COLOR_ID_YELLOW] = "yellow",
 	[LED_COLOR_ID_IR] = "ir",
+	[LED_COLOR_ID_MULTI] = "multicolor",
 };
 EXPORT_SYMBOL_GPL(led_colors);
 
-- 
2.27.0


^ permalink raw reply	[flat|nested] 27+ messages in thread

* [PATCH v30 05/16] leds: multicolor: Introduce a multicolor class definition
  2020-07-13 15:45 [PATCH v30 00/16] Multicolor Framework v30 Dan Murphy
                   ` (3 preceding siblings ...)
  2020-07-13 15:45 ` [PATCH v30 04/16] leds: Add multicolor ID to the color ID list Dan Murphy
@ 2020-07-13 15:45 ` Dan Murphy
  2020-07-15 13:21   ` Marek Behún
  2020-07-16  8:31   ` Pavel Machek
  2020-07-13 15:45 ` [PATCH v30 06/16] dt: bindings: lp50xx: Introduce the lp50xx family of RGB drivers Dan Murphy
                   ` (10 subsequent siblings)
  15 siblings, 2 replies; 27+ messages in thread
From: Dan Murphy @ 2020-07-13 15:45 UTC (permalink / raw)
  To: jacek.anaszewski, pavel, robh, marek.behun
  Cc: devicetree, linux-leds, linux-kernel, linux-arm-kernel, Dan Murphy

Introduce a multicolor class that groups colored LEDs
within a LED node.

The multi color class groups monochrome LEDs and allows controlling two
aspects of the final combined color: hue and lightness. The former is
controlled via the intensity file and the latter is controlled
via brightness file.

Acked-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
Signed-off-by: Dan Murphy <dmurphy@ti.com>
---
 .../ABI/testing/sysfs-class-led-multicolor    |  35 +++
 Documentation/leds/index.rst                  |   1 +
 Documentation/leds/leds-class-multicolor.rst  |  86 ++++++++
 drivers/leds/Kconfig                          |  10 +
 drivers/leds/Makefile                         |   1 +
 drivers/leds/led-class-multicolor.c           | 204 ++++++++++++++++++
 include/linux/led-class-multicolor.h          | 121 +++++++++++
 7 files changed, 458 insertions(+)
 create mode 100644 Documentation/ABI/testing/sysfs-class-led-multicolor
 create mode 100644 Documentation/leds/leds-class-multicolor.rst
 create mode 100644 drivers/leds/led-class-multicolor.c
 create mode 100644 include/linux/led-class-multicolor.h

diff --git a/Documentation/ABI/testing/sysfs-class-led-multicolor b/Documentation/ABI/testing/sysfs-class-led-multicolor
new file mode 100644
index 000000000000..40f96af06f44
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-class-led-multicolor
@@ -0,0 +1,35 @@
+What:		/sys/class/leds/<led>/brightness
+Date:		March 2020
+KernelVersion:	5.8
+Contact:	Dan Murphy <dmurphy@ti.com>
+Description:	read/write
+		Writing to this file will update all LEDs within the group to a
+		calculated percentage of what each color LED intensity is set
+		to. The percentage is calculated for each grouped LED via the
+		equation below:
+
+		led_brightness = brightness * multi_intensity/max_brightness
+
+		For additional details please refer to
+		Documentation/leds/leds-class-multicolor.rst.
+
+		The value of the LED is from 0 to
+		/sys/class/leds/<led>/max_brightness.
+
+What:		/sys/class/leds/<led>/multi_index
+Date:		March 2020
+KernelVersion:	5.8
+Contact:	Dan Murphy <dmurphy@ti.com>
+Description:	read
+		The multi_index array, when read, will output the LED colors
+		as an array of strings as they are indexed in the
+		multi_intensity file.
+
+What:		/sys/class/leds/<led>/multi_intensity
+Date:		March 2020
+KernelVersion:	5.8
+Contact:	Dan Murphy <dmurphy@ti.com>
+Description:	read/write
+		This file contains array of integers. Order of components is
+		described by the multi_index array. The maximum intensity should
+		not exceed /sys/class/leds/<led>/max_brightness.
diff --git a/Documentation/leds/index.rst b/Documentation/leds/index.rst
index 060f4e485897..bc70c6aa7138 100644
--- a/Documentation/leds/index.rst
+++ b/Documentation/leds/index.rst
@@ -9,6 +9,7 @@ LEDs
 
    leds-class
    leds-class-flash
+   leds-class-multicolor
    ledtrig-oneshot
    ledtrig-transient
    ledtrig-usbport
diff --git a/Documentation/leds/leds-class-multicolor.rst b/Documentation/leds/leds-class-multicolor.rst
new file mode 100644
index 000000000000..6204f391fd40
--- /dev/null
+++ b/Documentation/leds/leds-class-multicolor.rst
@@ -0,0 +1,86 @@
+.. SPDX-License-Identifier: GPL-2.0
+
+====================================
+MultiColor LED handling under Linux
+====================================
+
+Description
+===========
+The multicolor class groups monochrome LEDs and allows controlling two
+aspects of the final combined color: hue and lightness. The former is
+controlled via the multi_intensity array file and the latter is controlled
+via brightness file.
+
+Multicolor Class Control
+========================
+The multicolor class presents files that groups the colors as indexes in an
+array.  These files are children under the LED parent node created by the
+led_class framework.  The led_class framework is documented in led-class.rst
+within this documentation directory.
+
+Each colored LED will be indexed under the multi_* files. The order of the
+colors will be arbitrary. The multi_index file can be read to determine the
+color name to indexed value.
+
+The multi_index file is an array that contains the string list of the colors as
+they are defined in each multi_* array file.
+
+The multi_intensity is an array that can be read or written to for the
+individual color intensities.  All elements within this array must be written in
+order for the color LED intensities to be updated.
+
+Directory Layout Example
+========================
+root:/sys/class/leds/multicolor:status# ls -lR
+-rw-r--r--    1 root     root          4096 Oct 19 16:16 brightness
+-r--r--r--    1 root     root          4096 Oct 19 16:16 max_brightness
+-r--r--r--    1 root     root          4096 Oct 19 16:16 multi_index
+-rw-r--r--    1 root     root          4096 Oct 19 16:16 multi_intensity
+
+Multicolor Class Brightness Control
+===================================
+The brightness level for each LED is calculated based on the color LED
+intensity setting divided by the global max_brightness setting multiplied by
+the requested brightness.
+
+led_brightness = brightness * multi_intensity/max_brightness
+
+Example:
+A user first writes the multi_intensity file with the brightness levels
+for each LED that are necessary to achieve a certain color output from a
+multicolor LED group.
+
+cat /sys/class/leds/multicolor:status/multi_index
+green blue red
+
+echo 43 226 138 > /sys/class/leds/multicolor:status/multi_intensity
+
+red -
+	intensity = 138
+	max_brightness = 255
+green -
+	intensity = 43
+	max_brightness = 255
+blue -
+	intensity = 226
+	max_brightness = 255
+
+The user can control the brightness of that multicolor LED group by writing the
+global 'brightness' control.  Assuming a max_brightness of 255 the user
+may want to dim the LED color group to half.  The user would write a value of
+128 to the global brightness file then the values written to each LED will be
+adjusted base on this value.
+
+cat /sys/class/leds/multicolor:status/max_brightness
+255
+echo 128 > /sys/class/leds/multicolor:status/brightness
+
+adjusted_red_value = 128 * 138/255 = 69
+adjusted_green_value = 128 * 43/255 = 21
+adjusted_blue_value = 128 * 226/255 = 113
+
+Reading the global brightness file will return the current brightness value of
+the color LED group.
+
+cat /sys/class/leds/multicolor:status/brightness
+128
diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig
index ed943140e1fd..0d034453eeb9 100644
--- a/drivers/leds/Kconfig
+++ b/drivers/leds/Kconfig
@@ -30,6 +30,16 @@ config LEDS_CLASS_FLASH
 	  for the flash related features of a LED device. It can be built
 	  as a module.
 
+config LEDS_CLASS_MULTI_COLOR
+	tristate "LED MultiColor Class Support"
+	depends on LEDS_CLASS
+	help
+	  This option enables the multicolor LED sysfs class in /sys/class/leds.
+	  It wraps LED class and adds multicolor LED specific sysfs attributes
+	  and kernel internal API to it. You'll need this to provide support
+	  for multicolor LEDs that are grouped together. This class is not
+	  intended for single color LEDs. It can be built as a module.
+
 config LEDS_BRIGHTNESS_HW_CHANGED
 	bool "LED Class brightness_hw_changed attribute support"
 	depends on LEDS_CLASS
diff --git a/drivers/leds/Makefile b/drivers/leds/Makefile
index d6b8a792c936..53a752c32e67 100644
--- a/drivers/leds/Makefile
+++ b/drivers/leds/Makefile
@@ -4,6 +4,7 @@
 obj-$(CONFIG_NEW_LEDS)			+= led-core.o
 obj-$(CONFIG_LEDS_CLASS)		+= led-class.o
 obj-$(CONFIG_LEDS_CLASS_FLASH)		+= led-class-flash.o
+obj-$(CONFIG_LEDS_CLASS_MULTI_COLOR)	+= led-class-multicolor.o
 obj-$(CONFIG_LEDS_TRIGGERS)		+= led-triggers.o
 
 # LED Platform Drivers (keep this sorted, M-| sort)
diff --git a/drivers/leds/led-class-multicolor.c b/drivers/leds/led-class-multicolor.c
new file mode 100644
index 000000000000..c0fe679438bd
--- /dev/null
+++ b/drivers/leds/led-class-multicolor.c
@@ -0,0 +1,204 @@
+// SPDX-License-Identifier: GPL-2.0
+// LED Multi Color class interface
+// Copyright (C) 2019-20 Texas Instruments Incorporated - http://www.ti.com/
+// Author: Dan Murphy <dmurphy@ti.com>
+
+#include <linux/device.h>
+#include <linux/init.h>
+#include <linux/led-class-multicolor.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/uaccess.h>
+
+#include "leds.h"
+
+int led_mc_calc_color_components(struct led_classdev_mc *mcled_cdev,
+				 enum led_brightness brightness)
+{
+	struct led_classdev *led_cdev = &mcled_cdev->led_cdev;
+	int i;
+
+	for (i = 0; i < mcled_cdev->num_colors; i++)
+		mcled_cdev->subled_info[i].brightness = brightness *
+					mcled_cdev->subled_info[i].intensity /
+					led_cdev->max_brightness;
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(led_mc_calc_color_components);
+
+static ssize_t multi_intensity_store(struct device *dev,
+				struct device_attribute *intensity_attr,
+				const char *buf, size_t size)
+{
+	struct led_classdev *led_cdev = dev_get_drvdata(dev);
+	struct led_classdev_mc *mcled_cdev = lcdev_to_mccdev(led_cdev);
+	int nrchars, offset = 0;
+	int intensity_value[LED_COLOR_ID_MAX];
+	int i;
+	ssize_t ret;
+
+	mutex_lock(&led_cdev->led_access);
+
+	for (i = 0; i < mcled_cdev->num_colors; i++) {
+		ret = sscanf(buf + offset, "%i%n",
+			     &intensity_value[i], &nrchars);
+		if (ret != 1) {
+			ret = -EINVAL;
+			goto err_out;
+		}
+		offset += nrchars;
+	}
+
+	/* account for the new line at the end of the buffer */
+	offset++;
+	if (offset < size) {
+		ret = -EINVAL;
+		goto err_out;
+	}
+
+	for (i = 0; i < mcled_cdev->num_colors; i++)
+		mcled_cdev->subled_info[i].intensity = intensity_value[i];
+
+	led_set_brightness(led_cdev, led_cdev->brightness);
+	ret = size;
+err_out:
+	mutex_unlock(&led_cdev->led_access);
+	return ret;
+}
+
+static ssize_t multi_intensity_show(struct device *dev,
+			      struct device_attribute *intensity_attr,
+			      char *buf)
+{
+	struct led_classdev *led_cdev = dev_get_drvdata(dev);
+	struct led_classdev_mc *mcled_cdev = lcdev_to_mccdev(led_cdev);
+	int len = 0;
+	int i;
+
+	for (i = 0; i < mcled_cdev->num_colors; i++) {
+		len += sprintf(buf + len, "%d",
+			       mcled_cdev->subled_info[i].intensity);
+		if (i < mcled_cdev->num_colors - 1)
+			len += sprintf(buf + len, " ");
+	}
+
+	len += sprintf(buf + len, "\n");
+	return len;
+}
+static DEVICE_ATTR_RW(multi_intensity);
+
+static ssize_t multi_index_show(struct device *dev,
+			      struct device_attribute *multi_index_attr,
+			      char *buf)
+{
+	struct led_classdev *led_cdev = dev_get_drvdata(dev);
+	struct led_classdev_mc *mcled_cdev = lcdev_to_mccdev(led_cdev);
+	int len = 0;
+	int index;
+	int i;
+
+	for (i = 0; i < mcled_cdev->num_colors; i++) {
+		index = mcled_cdev->subled_info[i].color_index;
+		len += sprintf(buf + len, "%s", led_colors[index]);
+		if (i < mcled_cdev->num_colors - 1)
+			len += sprintf(buf + len, " ");
+	}
+
+	len += sprintf(buf + len, "\n");
+	return len;
+}
+static DEVICE_ATTR_RO(multi_index);
+
+static struct attribute *led_multicolor_attrs[] = {
+	&dev_attr_multi_intensity.attr,
+	&dev_attr_multi_index.attr,
+	NULL,
+};
+ATTRIBUTE_GROUPS(led_multicolor);
+
+int led_classdev_multicolor_register_ext(struct device *parent,
+				     struct led_classdev_mc *mcled_cdev,
+				     struct led_init_data *init_data)
+{
+	struct led_classdev *led_cdev;
+
+	if (!mcled_cdev)
+		return -EINVAL;
+
+	if (mcled_cdev->num_colors <= 0)
+		return -EINVAL;
+
+	if (mcled_cdev->num_colors > LED_COLOR_ID_MAX)
+		return -EINVAL;
+
+	led_cdev = &mcled_cdev->led_cdev;
+	mcled_cdev->led_cdev.groups = led_multicolor_groups;
+
+	return led_classdev_register_ext(parent, led_cdev, init_data);
+}
+EXPORT_SYMBOL_GPL(led_classdev_multicolor_register_ext);
+
+void led_classdev_multicolor_unregister(struct led_classdev_mc *mcled_cdev)
+{
+	if (!mcled_cdev)
+		return;
+
+	led_classdev_unregister(&mcled_cdev->led_cdev);
+}
+EXPORT_SYMBOL_GPL(led_classdev_multicolor_unregister);
+
+static void devm_led_classdev_multicolor_release(struct device *dev, void *res)
+{
+	led_classdev_multicolor_unregister(*(struct led_classdev_mc **)res);
+}
+
+int devm_led_classdev_multicolor_register_ext(struct device *parent,
+					     struct led_classdev_mc *mcled_cdev,
+					     struct led_init_data *init_data)
+{
+	struct led_classdev_mc **dr;
+	int ret;
+
+	dr = devres_alloc(devm_led_classdev_multicolor_release,
+			  sizeof(*dr), GFP_KERNEL);
+	if (!dr)
+		return -ENOMEM;
+
+	ret = led_classdev_multicolor_register_ext(parent, mcled_cdev,
+						   init_data);
+	if (ret) {
+		devres_free(dr);
+		return ret;
+	}
+
+	*dr = mcled_cdev;
+	devres_add(parent, dr);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(devm_led_classdev_multicolor_register_ext);
+
+static int devm_led_classdev_multicolor_match(struct device *dev,
+					      void *res, void *data)
+{
+	struct led_classdev_mc **p = res;
+
+	if (WARN_ON(!p || !*p))
+		return 0;
+
+	return *p == data;
+}
+
+void devm_led_classdev_multicolor_unregister(struct device *dev,
+					     struct led_classdev_mc *mcled_cdev)
+{
+	WARN_ON(devres_release(dev,
+			       devm_led_classdev_multicolor_release,
+			       devm_led_classdev_multicolor_match, mcled_cdev));
+}
+EXPORT_SYMBOL_GPL(devm_led_classdev_multicolor_unregister);
+
+MODULE_AUTHOR("Dan Murphy <dmurphy@ti.com>");
+MODULE_DESCRIPTION("Multi Color LED class interface");
+MODULE_LICENSE("GPL v2+");
diff --git a/include/linux/led-class-multicolor.h b/include/linux/led-class-multicolor.h
new file mode 100644
index 000000000000..5dae7f5abb70
--- /dev/null
+++ b/include/linux/led-class-multicolor.h
@@ -0,0 +1,121 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* LED Multicolor class interface
+ * Copyright (C) 2019-20 Texas Instruments Incorporated - http://www.ti.com/
+ */
+
+#ifndef _LINUX_MULTICOLOR_LEDS_H_INCLUDED
+#define _LINUX_MULTICOLOR_LEDS_H_INCLUDED
+
+#include <linux/leds.h>
+#include <dt-bindings/leds/common.h>
+
+struct mc_subled {
+	unsigned int color_index;
+	unsigned int brightness;
+	unsigned int intensity;
+	unsigned int channel;
+};
+
+struct led_classdev_mc {
+	/* led class device */
+	struct led_classdev led_cdev;
+	unsigned int num_colors;
+
+	struct mc_subled *subled_info;
+};
+
+static inline struct led_classdev_mc *lcdev_to_mccdev(
+						struct led_classdev *led_cdev)
+{
+	return container_of(led_cdev, struct led_classdev_mc, led_cdev);
+}
+
+#if IS_ENABLED(CONFIG_LEDS_CLASS_MULTI_COLOR)
+/**
+ * led_classdev_multicolor_register_ext - register a new object of led_classdev
+ *				      class with support for multicolor LEDs
+ * @parent: the multicolor LED to register
+ * @mcled_cdev: the led_classdev_mc structure for this device
+ * @init_data: the LED class Multi color device initialization data
+ *
+ * Returns: 0 on success or negative error value on failure
+ */
+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
+ * @mcled_cdev: the multicolor LED to unregister
+ *
+ * Unregister a previously registered via led_classdev_multicolor_register
+ * object
+ */
+void led_classdev_multicolor_unregister(struct led_classdev_mc *mcled_cdev);
+
+/* Calculate brightness for the monochrome LED cluster */
+int led_mc_calc_color_components(struct led_classdev_mc *mcled_cdev,
+				 enum led_brightness brightness);
+
+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
+
+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);
+}
+
+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;
+}
+
+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;
+}
+
+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);
+}
+
+static inline void devm_led_classdev_multicolor_unregister(struct device *parent,
+					    struct led_classdev_mc *mcled_cdev)
+{};
+
+#endif  /* IS_ENABLED(CONFIG_LEDS_CLASS_MULTI_COLOR) */
+#endif	/* _LINUX_MULTICOLOR_LEDS_H_INCLUDED */
-- 
2.27.0


^ permalink raw reply	[flat|nested] 27+ messages in thread

* [PATCH v30 06/16] dt: bindings: lp50xx: Introduce the lp50xx family of RGB drivers
  2020-07-13 15:45 [PATCH v30 00/16] Multicolor Framework v30 Dan Murphy
                   ` (4 preceding siblings ...)
  2020-07-13 15:45 ` [PATCH v30 05/16] leds: multicolor: Introduce a multicolor class definition Dan Murphy
@ 2020-07-13 15:45 ` Dan Murphy
  2020-07-13 15:45 ` [PATCH v30 07/16] leds: lp50xx: Add the LP50XX family of the RGB LED driver Dan Murphy
                   ` (9 subsequent siblings)
  15 siblings, 0 replies; 27+ messages in thread
From: Dan Murphy @ 2020-07-13 15:45 UTC (permalink / raw)
  To: jacek.anaszewski, pavel, robh, marek.behun
  Cc: devicetree, linux-leds, linux-kernel, linux-arm-kernel, Dan Murphy

Introduce the bindings for the Texas Instruments LP5036, LP5030, LP5024,
LP5018, LP5012 and LP5009 RGB LED device driver.  The LP5036/30/24/18/12/9
can control RGB LEDs individually or as part of a control bank group.
These devices have the ability to adjust the mixing control for the RGB
LEDs to obtain different colors independent of the overall brightness of
the LED grouping.

Datasheet:
http://www.ti.com/lit/ds/symlink/lp5012.pdf
http://www.ti.com/lit/ds/symlink/lp5024.pdf
http://www.ti.com/lit/ds/symlink/lp5036.pdf

Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
Signed-off-by: Dan Murphy <dmurphy@ti.com>
---
 .../devicetree/bindings/leds/leds-lp50xx.yaml | 130 ++++++++++++++++++
 1 file changed, 130 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/leds/leds-lp50xx.yaml

diff --git a/Documentation/devicetree/bindings/leds/leds-lp50xx.yaml b/Documentation/devicetree/bindings/leds/leds-lp50xx.yaml
new file mode 100644
index 000000000000..de5225b54a45
--- /dev/null
+++ b/Documentation/devicetree/bindings/leds/leds-lp50xx.yaml
@@ -0,0 +1,130 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/leds/leds-lp50xx.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: LED driver for LP50XX RGB LED from Texas Instruments.
+
+maintainers:
+  - Dan Murphy <dmurphy@ti.com>
+
+description: |
+  The LP50XX is multi-channel, I2C RGB LED Drivers that can group RGB LEDs into
+  a LED group or control them individually.
+
+  The difference in these RGB LED drivers is the number of supported RGB
+  modules.
+
+  For more product information please see the link below:
+  http://www.ti.com/lit/ds/symlink/lp5012.pdf
+  http://www.ti.com/lit/ds/symlink/lp5024.pdf
+  http://www.ti.com/lit/ds/symlink/lp5036.pdf
+
+properties:
+  compatible:
+    enum:
+      - ti,lp5009
+      - ti,lp5012
+      - ti,lp5018
+      - ti,lp5024
+      - ti,lp5030
+      - ti,lp5036
+
+  reg:
+    maxItems: 1
+    description:
+      I2C slave address
+      lp5009/12 - 0x14, 0x15, 0x16, 0x17
+      lp5018/24 - 0x28, 0x29, 0x2a, 0x2b
+      lp5030/36 - 0x30, 0x31, 0x32, 0x33
+
+  enable-gpios:
+    maxItems: 1
+    description: GPIO pin to enable/disable the device.
+
+  vled-supply:
+    description: LED supply.
+
+patternProperties:
+  '^multi-led@[0-9a-f]$':
+    type: object
+    allOf:
+      - $ref: leds-class-multicolor.yaml#
+    properties:
+      reg:
+        minItems: 1
+        maxItems: 12
+        description:
+          This property denotes the LED module number(s) that is used on the
+          for the child node.  The LED modules can either be used stand alone
+          or grouped into a module bank.
+
+    patternProperties:
+      "(^led-[0-9a-f]$|led)":
+        type: object
+        $ref: common.yaml#
+
+required:
+  - compatible
+  - reg
+
+examples:
+  - |
+   #include <dt-bindings/gpio/gpio.h>
+   #include <dt-bindings/leds/common.h>
+
+   i2c {
+       #address-cells = <1>;
+       #size-cells = <0>;
+
+       led-controller@14 {
+           compatible = "ti,lp5009";
+           reg = <0x14>;
+           #address-cells = <1>;
+           #size-cells = <0>;
+           enable-gpios = <&gpio1 16>;
+
+           multi-led@1 {
+               #address-cells = <1>;
+               #size-cells = <0>;
+               reg = <0x1>;
+               color = <LED_COLOR_ID_MULTI>;
+               function = LED_FUNCTION_CHARGING;
+
+               led-0 {
+                   color = <LED_COLOR_ID_RED>;
+               };
+
+               led-1 {
+                   color = <LED_COLOR_ID_GREEN>;
+               };
+
+               led-2 {
+                   color = <LED_COLOR_ID_BLUE>;
+               };
+          };
+
+          multi-led@2 {
+            #address-cells = <1>;
+            #size-cells = <2>;
+            reg = <0x2 0x3 0x5>;
+            color = <LED_COLOR_ID_MULTI>;
+            function = LED_FUNCTION_STANDBY;
+
+            led-6 {
+              color = <LED_COLOR_ID_RED>;
+            };
+
+            led-7 {
+              color = <LED_COLOR_ID_GREEN>;
+            };
+
+            led-8 {
+              color = <LED_COLOR_ID_BLUE>;
+            };
+         };
+       };
+    };
+
+...
-- 
2.27.0


^ permalink raw reply	[flat|nested] 27+ messages in thread

* [PATCH v30 07/16] leds: lp50xx: Add the LP50XX family of the RGB LED driver
  2020-07-13 15:45 [PATCH v30 00/16] Multicolor Framework v30 Dan Murphy
                   ` (5 preceding siblings ...)
  2020-07-13 15:45 ` [PATCH v30 06/16] dt: bindings: lp50xx: Introduce the lp50xx family of RGB drivers Dan Murphy
@ 2020-07-13 15:45 ` Dan Murphy
  2020-07-13 15:45 ` [PATCH v30 08/16] dt-bindings: leds: Convert leds-lp55xx to yaml Dan Murphy
                   ` (8 subsequent siblings)
  15 siblings, 0 replies; 27+ messages in thread
From: Dan Murphy @ 2020-07-13 15:45 UTC (permalink / raw)
  To: jacek.anaszewski, pavel, robh, marek.behun
  Cc: devicetree, linux-leds, linux-kernel, linux-arm-kernel, Dan Murphy

Introduce the LP5036/30/24/18/12/9 RGB LED driver.
The difference in these parts are the number of
LED outputs where the:

LP5036 can control 36 LEDs
LP5030 can control 30 LEDs
LP5024 can control 24 LEDs
LP5018 can control 18 LEDs
LP5012 can control 12 LEDs
LP5009 can control 9 LEDs

The device has the ability to group LED output into control banks
so that multiple LED banks can be controlled with the same mixing and
brightness.  Inversely the LEDs can also be controlled independently.

Acked-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
Signed-off-by: Dan Murphy <dmurphy@ti.com>
---
 drivers/leds/Kconfig       |  11 +
 drivers/leds/Makefile      |   1 +
 drivers/leds/leds-lp50xx.c | 784 +++++++++++++++++++++++++++++++++++++
 3 files changed, 796 insertions(+)
 create mode 100644 drivers/leds/leds-lp50xx.c

diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig
index 0d034453eeb9..68f63d1a7d48 100644
--- a/drivers/leds/Kconfig
+++ b/drivers/leds/Kconfig
@@ -384,6 +384,17 @@ config LEDS_LP3952
 	  To compile this driver as a module, choose M here: the
 	  module will be called leds-lp3952.
 
+config LEDS_LP50XX
+	tristate "LED Support for TI LP5036/30/24/18/12/9 LED driver chip"
+	depends on LEDS_CLASS && REGMAP_I2C
+	depends on LEDS_CLASS_MULTI_COLOR || !LEDS_CLASS_MULTI_COLOR
+	help
+	  If you say yes here you get support for the Texas Instruments
+	  LP5036, LP5030, LP5024, LP5018, LP5012 and LP5009 LED driver.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called leds-lp50xx.
+
 config LEDS_LP55XX_COMMON
 	tristate "Common Driver for TI/National LP5521/5523/55231/5562/8501"
 	depends on LEDS_LP5521 || LEDS_LP5523 || LEDS_LP5562 || LEDS_LP8501
diff --git a/drivers/leds/Makefile b/drivers/leds/Makefile
index 53a752c32e67..68c05faec99e 100644
--- a/drivers/leds/Makefile
+++ b/drivers/leds/Makefile
@@ -49,6 +49,7 @@ obj-$(CONFIG_LEDS_LM3697)		+= leds-lm3697.o
 obj-$(CONFIG_LEDS_LOCOMO)		+= leds-locomo.o
 obj-$(CONFIG_LEDS_LP3944)		+= leds-lp3944.o
 obj-$(CONFIG_LEDS_LP3952)		+= leds-lp3952.o
+obj-$(CONFIG_LEDS_LP50XX)		+= leds-lp50xx.o
 obj-$(CONFIG_LEDS_LP5521)		+= leds-lp5521.o
 obj-$(CONFIG_LEDS_LP5523)		+= leds-lp5523.o
 obj-$(CONFIG_LEDS_LP5562)		+= leds-lp5562.o
diff --git a/drivers/leds/leds-lp50xx.c b/drivers/leds/leds-lp50xx.c
new file mode 100644
index 000000000000..6c334d7b24ba
--- /dev/null
+++ b/drivers/leds/leds-lp50xx.c
@@ -0,0 +1,784 @@
+// SPDX-License-Identifier: GPL-2.0
+// TI LP50XX LED chip family driver
+// Copyright (C) 2018 Texas Instruments Incorporated - http://www.ti.com/
+
+#include <linux/gpio/consumer.h>
+#include <linux/i2c.h>
+#include <linux/init.h>
+#include <linux/leds.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/of.h>
+#include <linux/of_gpio.h>
+#include <linux/regmap.h>
+#include <linux/regulator/consumer.h>
+#include <linux/slab.h>
+#include <uapi/linux/uleds.h>
+
+#include <linux/led-class-multicolor.h>
+
+#include "leds.h"
+
+#define LP50XX_DEV_CFG0		0x00
+#define LP50XX_DEV_CFG1		0x01
+#define LP50XX_LED_CFG0		0x02
+
+/* LP5009 and LP5012 registers */
+#define LP5012_BNK_BRT		0x03
+#define LP5012_BNKA_CLR		0x04
+#define LP5012_BNKB_CLR		0x05
+#define LP5012_BNKC_CLR		0x06
+#define LP5012_LED0_BRT		0x07
+#define LP5012_LED1_BRT		0x08
+#define LP5012_LED2_BRT		0x09
+#define LP5012_LED3_BRT		0x0a
+#define LP5012_OUT0_CLR		0x0b
+#define LP5012_OUT1_CLR		0x0c
+#define LP5012_OUT2_CLR		0x0d
+#define LP5012_OUT3_CLR		0x0e
+#define LP5012_OUT4_CLR		0x0f
+#define LP5012_OUT5_CLR		0x10
+#define LP5012_OUT6_CLR		0x11
+#define LP5012_OUT7_CLR		0x12
+#define LP5012_OUT8_CLR		0x13
+#define LP5012_OUT9_CLR		0x14
+#define LP5012_OUT10_CLR	0x15
+#define LP5012_OUT11_CLR	0x16
+#define LP5012_RESET		0x17
+
+/* LP5018 and LP5024 registers */
+#define LP5024_BNK_BRT		0x03
+#define LP5024_BNKA_CLR		0x04
+#define LP5024_BNKB_CLR		0x05
+#define LP5024_BNKC_CLR		0x06
+#define LP5024_LED0_BRT		0x07
+#define LP5024_LED1_BRT		0x08
+#define LP5024_LED2_BRT		0x09
+#define LP5024_LED3_BRT		0x0a
+#define LP5024_LED4_BRT		0x0b
+#define LP5024_LED5_BRT		0x0c
+#define LP5024_LED6_BRT		0x0d
+#define LP5024_LED7_BRT		0x0e
+
+#define LP5024_OUT0_CLR		0x0f
+#define LP5024_OUT1_CLR		0x10
+#define LP5024_OUT2_CLR		0x11
+#define LP5024_OUT3_CLR		0x12
+#define LP5024_OUT4_CLR		0x13
+#define LP5024_OUT5_CLR		0x14
+#define LP5024_OUT6_CLR		0x15
+#define LP5024_OUT7_CLR		0x16
+#define LP5024_OUT8_CLR		0x17
+#define LP5024_OUT9_CLR		0x18
+#define LP5024_OUT10_CLR	0x19
+#define LP5024_OUT11_CLR	0x1a
+#define LP5024_OUT12_CLR	0x1b
+#define LP5024_OUT13_CLR	0x1c
+#define LP5024_OUT14_CLR	0x1d
+#define LP5024_OUT15_CLR	0x1e
+#define LP5024_OUT16_CLR	0x1f
+#define LP5024_OUT17_CLR	0x20
+#define LP5024_OUT18_CLR	0x21
+#define LP5024_OUT19_CLR	0x22
+#define LP5024_OUT20_CLR	0x23
+#define LP5024_OUT21_CLR	0x24
+#define LP5024_OUT22_CLR	0x25
+#define LP5024_OUT23_CLR	0x26
+#define LP5024_RESET		0x27
+
+/* LP5030 and LP5036 registers */
+#define LP5036_LED_CFG1		0x03
+#define LP5036_BNK_BRT		0x04
+#define LP5036_BNKA_CLR		0x05
+#define LP5036_BNKB_CLR		0x06
+#define LP5036_BNKC_CLR		0x07
+#define LP5036_LED0_BRT		0x08
+#define LP5036_LED1_BRT		0x09
+#define LP5036_LED2_BRT		0x0a
+#define LP5036_LED3_BRT		0x0b
+#define LP5036_LED4_BRT		0x0c
+#define LP5036_LED5_BRT		0x0d
+#define LP5036_LED6_BRT		0x0e
+#define LP5036_LED7_BRT		0x0f
+#define LP5036_LED8_BRT		0x10
+#define LP5036_LED9_BRT		0x11
+#define LP5036_LED10_BRT	0x12
+#define LP5036_LED11_BRT	0x13
+
+#define LP5036_OUT0_CLR		0x14
+#define LP5036_OUT1_CLR		0x15
+#define LP5036_OUT2_CLR		0x16
+#define LP5036_OUT3_CLR		0x17
+#define LP5036_OUT4_CLR		0x18
+#define LP5036_OUT5_CLR		0x19
+#define LP5036_OUT6_CLR		0x1a
+#define LP5036_OUT7_CLR		0x1b
+#define LP5036_OUT8_CLR		0x1c
+#define LP5036_OUT9_CLR		0x1d
+#define LP5036_OUT10_CLR	0x1e
+#define LP5036_OUT11_CLR	0x1f
+#define LP5036_OUT12_CLR	0x20
+#define LP5036_OUT13_CLR	0x21
+#define LP5036_OUT14_CLR	0x22
+#define LP5036_OUT15_CLR	0x23
+#define LP5036_OUT16_CLR	0x24
+#define LP5036_OUT17_CLR	0x25
+#define LP5036_OUT18_CLR	0x26
+#define LP5036_OUT19_CLR	0x27
+#define LP5036_OUT20_CLR	0x28
+#define LP5036_OUT21_CLR	0x29
+#define LP5036_OUT22_CLR	0x2a
+#define LP5036_OUT23_CLR	0x2b
+#define LP5036_OUT24_CLR	0x2c
+#define LP5036_OUT25_CLR	0x2d
+#define LP5036_OUT26_CLR	0x2e
+#define LP5036_OUT27_CLR	0x2f
+#define LP5036_OUT28_CLR	0x30
+#define LP5036_OUT29_CLR	0x31
+#define LP5036_OUT30_CLR	0x32
+#define LP5036_OUT31_CLR	0x33
+#define LP5036_OUT32_CLR	0x34
+#define LP5036_OUT33_CLR	0x35
+#define LP5036_OUT34_CLR	0x36
+#define LP5036_OUT35_CLR	0x37
+#define LP5036_RESET		0x38
+
+#define LP50XX_SW_RESET		0xff
+#define LP50XX_CHIP_EN		BIT(6)
+
+/* There are 3 LED outputs per bank */
+#define LP50XX_LEDS_PER_MODULE	3
+
+#define LP5009_MAX_LED_MODULES	2
+#define LP5012_MAX_LED_MODULES	4
+#define LP5018_MAX_LED_MODULES	6
+#define LP5024_MAX_LED_MODULES	8
+#define LP5030_MAX_LED_MODULES	10
+#define LP5036_MAX_LED_MODULES	12
+
+#define LP5009_MAX_LEDS	(LP5009_MAX_LED_MODULES * LP50XX_LEDS_PER_MODULE)
+#define LP5012_MAX_LEDS	(LP5012_MAX_LED_MODULES * LP50XX_LEDS_PER_MODULE)
+#define LP5018_MAX_LEDS	(LP5018_MAX_LED_MODULES * LP50XX_LEDS_PER_MODULE)
+#define LP5024_MAX_LEDS	(LP5024_MAX_LED_MODULES * LP50XX_LEDS_PER_MODULE)
+#define LP5030_MAX_LEDS	(LP5030_MAX_LED_MODULES * LP50XX_LEDS_PER_MODULE)
+#define LP5036_MAX_LEDS	(LP5036_MAX_LED_MODULES * LP50XX_LEDS_PER_MODULE)
+
+static const struct reg_default lp5012_reg_defs[] = {
+	{LP50XX_DEV_CFG0, 0x0},
+	{LP50XX_DEV_CFG1, 0x3c},
+	{LP50XX_LED_CFG0, 0x0},
+	{LP5012_BNK_BRT, 0xff},
+	{LP5012_BNKA_CLR, 0x0f},
+	{LP5012_BNKB_CLR, 0x0f},
+	{LP5012_BNKC_CLR, 0x0f},
+	{LP5012_LED0_BRT, 0x0f},
+	{LP5012_LED1_BRT, 0xff},
+	{LP5012_LED2_BRT, 0xff},
+	{LP5012_LED3_BRT, 0xff},
+	{LP5012_OUT0_CLR, 0x0f},
+	{LP5012_OUT1_CLR, 0x00},
+	{LP5012_OUT2_CLR, 0x00},
+	{LP5012_OUT3_CLR, 0x00},
+	{LP5012_OUT4_CLR, 0x00},
+	{LP5012_OUT5_CLR, 0x00},
+	{LP5012_OUT6_CLR, 0x00},
+	{LP5012_OUT7_CLR, 0x00},
+	{LP5012_OUT8_CLR, 0x00},
+	{LP5012_OUT9_CLR, 0x00},
+	{LP5012_OUT10_CLR, 0x00},
+	{LP5012_OUT11_CLR, 0x00},
+	{LP5012_RESET, 0x00}
+};
+
+static const struct reg_default lp5024_reg_defs[] = {
+	{LP50XX_DEV_CFG0, 0x0},
+	{LP50XX_DEV_CFG1, 0x3c},
+	{LP50XX_LED_CFG0, 0x0},
+	{LP5024_BNK_BRT, 0xff},
+	{LP5024_BNKA_CLR, 0x0f},
+	{LP5024_BNKB_CLR, 0x0f},
+	{LP5024_BNKC_CLR, 0x0f},
+	{LP5024_LED0_BRT, 0x0f},
+	{LP5024_LED1_BRT, 0xff},
+	{LP5024_LED2_BRT, 0xff},
+	{LP5024_LED3_BRT, 0xff},
+	{LP5024_LED4_BRT, 0xff},
+	{LP5024_LED5_BRT, 0xff},
+	{LP5024_LED6_BRT, 0xff},
+	{LP5024_LED7_BRT, 0xff},
+	{LP5024_OUT0_CLR, 0x0f},
+	{LP5024_OUT1_CLR, 0x00},
+	{LP5024_OUT2_CLR, 0x00},
+	{LP5024_OUT3_CLR, 0x00},
+	{LP5024_OUT4_CLR, 0x00},
+	{LP5024_OUT5_CLR, 0x00},
+	{LP5024_OUT6_CLR, 0x00},
+	{LP5024_OUT7_CLR, 0x00},
+	{LP5024_OUT8_CLR, 0x00},
+	{LP5024_OUT9_CLR, 0x00},
+	{LP5024_OUT10_CLR, 0x00},
+	{LP5024_OUT11_CLR, 0x00},
+	{LP5024_OUT12_CLR, 0x00},
+	{LP5024_OUT13_CLR, 0x00},
+	{LP5024_OUT14_CLR, 0x00},
+	{LP5024_OUT15_CLR, 0x00},
+	{LP5024_OUT16_CLR, 0x00},
+	{LP5024_OUT17_CLR, 0x00},
+	{LP5024_OUT18_CLR, 0x00},
+	{LP5024_OUT19_CLR, 0x00},
+	{LP5024_OUT20_CLR, 0x00},
+	{LP5024_OUT21_CLR, 0x00},
+	{LP5024_OUT22_CLR, 0x00},
+	{LP5024_OUT23_CLR, 0x00},
+	{LP5024_RESET, 0x00}
+};
+
+static const struct reg_default lp5036_reg_defs[] = {
+	{LP50XX_DEV_CFG0, 0x0},
+	{LP50XX_DEV_CFG1, 0x3c},
+	{LP50XX_LED_CFG0, 0x0},
+	{LP5036_LED_CFG1, 0x0},
+	{LP5036_BNK_BRT, 0xff},
+	{LP5036_BNKA_CLR, 0x0f},
+	{LP5036_BNKB_CLR, 0x0f},
+	{LP5036_BNKC_CLR, 0x0f},
+	{LP5036_LED0_BRT, 0x0f},
+	{LP5036_LED1_BRT, 0xff},
+	{LP5036_LED2_BRT, 0xff},
+	{LP5036_LED3_BRT, 0xff},
+	{LP5036_LED4_BRT, 0xff},
+	{LP5036_LED5_BRT, 0xff},
+	{LP5036_LED6_BRT, 0xff},
+	{LP5036_LED7_BRT, 0xff},
+	{LP5036_OUT0_CLR, 0x0f},
+	{LP5036_OUT1_CLR, 0x00},
+	{LP5036_OUT2_CLR, 0x00},
+	{LP5036_OUT3_CLR, 0x00},
+	{LP5036_OUT4_CLR, 0x00},
+	{LP5036_OUT5_CLR, 0x00},
+	{LP5036_OUT6_CLR, 0x00},
+	{LP5036_OUT7_CLR, 0x00},
+	{LP5036_OUT8_CLR, 0x00},
+	{LP5036_OUT9_CLR, 0x00},
+	{LP5036_OUT10_CLR, 0x00},
+	{LP5036_OUT11_CLR, 0x00},
+	{LP5036_OUT12_CLR, 0x00},
+	{LP5036_OUT13_CLR, 0x00},
+	{LP5036_OUT14_CLR, 0x00},
+	{LP5036_OUT15_CLR, 0x00},
+	{LP5036_OUT16_CLR, 0x00},
+	{LP5036_OUT17_CLR, 0x00},
+	{LP5036_OUT18_CLR, 0x00},
+	{LP5036_OUT19_CLR, 0x00},
+	{LP5036_OUT20_CLR, 0x00},
+	{LP5036_OUT21_CLR, 0x00},
+	{LP5036_OUT22_CLR, 0x00},
+	{LP5036_OUT23_CLR, 0x00},
+	{LP5036_OUT24_CLR, 0x00},
+	{LP5036_OUT25_CLR, 0x00},
+	{LP5036_OUT26_CLR, 0x00},
+	{LP5036_OUT27_CLR, 0x00},
+	{LP5036_OUT28_CLR, 0x00},
+	{LP5036_OUT29_CLR, 0x00},
+	{LP5036_OUT30_CLR, 0x00},
+	{LP5036_OUT31_CLR, 0x00},
+	{LP5036_OUT32_CLR, 0x00},
+	{LP5036_OUT33_CLR, 0x00},
+	{LP5036_OUT34_CLR, 0x00},
+	{LP5036_OUT35_CLR, 0x00},
+	{LP5036_RESET, 0x00}
+};
+
+static const struct regmap_config lp5012_regmap_config = {
+	.reg_bits = 8,
+	.val_bits = 8,
+
+	.max_register = LP5012_RESET,
+	.reg_defaults = lp5012_reg_defs,
+	.num_reg_defaults = ARRAY_SIZE(lp5012_reg_defs),
+	.cache_type = REGCACHE_RBTREE,
+};
+
+static const struct regmap_config lp5024_regmap_config = {
+	.reg_bits = 8,
+	.val_bits = 8,
+
+	.max_register = LP5024_RESET,
+	.reg_defaults = lp5024_reg_defs,
+	.num_reg_defaults = ARRAY_SIZE(lp5024_reg_defs),
+	.cache_type = REGCACHE_RBTREE,
+};
+
+static const struct regmap_config lp5036_regmap_config = {
+	.reg_bits = 8,
+	.val_bits = 8,
+
+	.max_register = LP5036_RESET,
+	.reg_defaults = lp5036_reg_defs,
+	.num_reg_defaults = ARRAY_SIZE(lp5036_reg_defs),
+	.cache_type = REGCACHE_RBTREE,
+};
+
+enum lp50xx_model {
+	LP5009,
+	LP5012,
+	LP5018,
+	LP5024,
+	LP5030,
+	LP5036,
+};
+
+/*
+ * struct lp50xx_chip_info -
+ * @num_leds: number of LED outputs available on the device
+ * @led_brightness0_reg: first brightness register of the device
+ * @mix_out0_reg: first color mix register of the device
+ * @bank_brt_reg: bank brightness register
+ * @bank_mix_reg: color mix register
+ * @reset_reg: device reset register
+ */
+struct lp50xx_chip_info {
+	const struct regmap_config *lp50xx_regmap_config;
+	int model_id;
+	u8 max_modules;
+	u8 num_leds;
+	u8 led_brightness0_reg;
+	u8 mix_out0_reg;
+	u8 bank_brt_reg;
+	u8 bank_mix_reg;
+	u8 reset_reg;
+};
+
+static const struct lp50xx_chip_info lp50xx_chip_info_tbl[] = {
+	[LP5009] = {
+		.model_id = LP5009,
+		.max_modules = LP5009_MAX_LED_MODULES,
+		.num_leds = LP5009_MAX_LEDS,
+		.led_brightness0_reg = LP5012_LED0_BRT,
+		.mix_out0_reg = LP5012_OUT0_CLR,
+		.bank_brt_reg = LP5012_BNK_BRT,
+		.bank_mix_reg = LP5012_BNKA_CLR,
+		.reset_reg = LP5012_RESET,
+		.lp50xx_regmap_config = &lp5012_regmap_config,
+	},
+	[LP5012] = {
+		.model_id = LP5012,
+		.max_modules = LP5012_MAX_LED_MODULES,
+		.num_leds = LP5012_MAX_LEDS,
+		.led_brightness0_reg = LP5012_LED0_BRT,
+		.mix_out0_reg = LP5012_OUT0_CLR,
+		.bank_brt_reg = LP5012_BNK_BRT,
+		.bank_mix_reg = LP5012_BNKA_CLR,
+		.reset_reg = LP5012_RESET,
+		.lp50xx_regmap_config = &lp5012_regmap_config,
+	},
+	[LP5018] = {
+		.model_id = LP5018,
+		.max_modules = LP5018_MAX_LED_MODULES,
+		.num_leds = LP5018_MAX_LEDS,
+		.led_brightness0_reg = LP5024_LED0_BRT,
+		.mix_out0_reg = LP5024_OUT0_CLR,
+		.bank_brt_reg = LP5024_BNK_BRT,
+		.bank_mix_reg = LP5024_BNKA_CLR,
+		.reset_reg = LP5024_RESET,
+		.lp50xx_regmap_config = &lp5024_regmap_config,
+	},
+	[LP5024] = {
+		.model_id = LP5024,
+		.max_modules = LP5024_MAX_LED_MODULES,
+		.num_leds = LP5024_MAX_LEDS,
+		.led_brightness0_reg = LP5024_LED0_BRT,
+		.mix_out0_reg = LP5024_OUT0_CLR,
+		.bank_brt_reg = LP5024_BNK_BRT,
+		.bank_mix_reg = LP5024_BNKA_CLR,
+		.reset_reg = LP5024_RESET,
+		.lp50xx_regmap_config = &lp5024_regmap_config,
+	},
+	[LP5030] = {
+		.model_id = LP5030,
+		.max_modules = LP5030_MAX_LED_MODULES,
+		.num_leds = LP5030_MAX_LEDS,
+		.led_brightness0_reg = LP5036_LED0_BRT,
+		.mix_out0_reg = LP5036_OUT0_CLR,
+		.bank_brt_reg = LP5036_BNK_BRT,
+		.bank_mix_reg = LP5036_BNKA_CLR,
+		.reset_reg = LP5036_RESET,
+		.lp50xx_regmap_config = &lp5036_regmap_config,
+	},
+	[LP5036] = {
+		.model_id = LP5036,
+		.max_modules = LP5036_MAX_LED_MODULES,
+		.num_leds = LP5036_MAX_LEDS,
+		.led_brightness0_reg = LP5036_LED0_BRT,
+		.mix_out0_reg = LP5036_OUT0_CLR,
+		.bank_brt_reg = LP5036_BNK_BRT,
+		.bank_mix_reg = LP5036_BNKA_CLR,
+		.reset_reg = LP5036_RESET,
+		.lp50xx_regmap_config = &lp5036_regmap_config,
+	},
+};
+
+struct lp50xx_led {
+	struct led_classdev_mc mc_cdev;
+	struct lp50xx *priv;
+	unsigned long bank_modules;
+	int led_intensity[LP50XX_LEDS_PER_MODULE];
+	u8 ctrl_bank_enabled;
+	int led_number;
+};
+
+/**
+ * struct lp50xx -
+ * @enable_gpio: hardware enable gpio
+ * @regulator: LED supply regulator pointer
+ * @client: pointer to the I2C client
+ * @regmap: device register map
+ * @dev: pointer to the devices device struct
+ * @lock: lock for reading/writing the device
+ * @chip_info: chip specific information (ie num_leds)
+ * @num_of_banked_leds: holds the number of banked LEDs
+ * @leds: array of LED strings
+ */
+struct lp50xx {
+	struct gpio_desc *enable_gpio;
+	struct regulator *regulator;
+	struct i2c_client *client;
+	struct regmap *regmap;
+	struct device *dev;
+	struct mutex lock;
+	const struct lp50xx_chip_info *chip_info;
+	int num_of_banked_leds;
+
+	/* This needs to be at the end of the struct */
+	struct lp50xx_led leds[];
+};
+
+static struct lp50xx_led *mcled_cdev_to_led(struct led_classdev_mc *mc_cdev)
+{
+	return container_of(mc_cdev, struct lp50xx_led, mc_cdev);
+}
+
+static int lp50xx_brightness_set(struct led_classdev *cdev,
+			     enum led_brightness brightness)
+{
+	struct led_classdev_mc *mc_dev = lcdev_to_mccdev(cdev);
+	struct lp50xx_led *led = mcled_cdev_to_led(mc_dev);
+	const struct lp50xx_chip_info *led_chip = led->priv->chip_info;
+	u8 led_offset, reg_val;
+	int ret = 0;
+	int i;
+
+	mutex_lock(&led->priv->lock);
+	if (led->ctrl_bank_enabled)
+		reg_val = led_chip->bank_brt_reg;
+	else
+		reg_val = led_chip->led_brightness0_reg +
+			  led->led_number;
+
+	ret = regmap_write(led->priv->regmap, reg_val, brightness);
+	if (ret) {
+		dev_err(&led->priv->client->dev,
+			"Cannot write brightness value %d\n", ret);
+		goto out;
+	}
+
+	for (i = 0; i < led->mc_cdev.num_colors; i++) {
+		if (led->ctrl_bank_enabled) {
+			reg_val = led_chip->bank_mix_reg + i;
+		} else {
+			led_offset = (led->led_number * 3) + i;
+			reg_val = led_chip->mix_out0_reg + led_offset;
+		}
+
+		ret = regmap_write(led->priv->regmap, reg_val,
+				   mc_dev->subled_info[i].intensity);
+		if (ret) {
+			dev_err(&led->priv->client->dev,
+				"Cannot write intensity value %d\n", ret);
+			goto out;
+		}
+	}
+out:
+	mutex_unlock(&led->priv->lock);
+	return ret;
+}
+
+static int lp50xx_set_banks(struct lp50xx *priv, u32 led_banks[])
+{
+	u8 led_config_lo, led_config_hi;
+	u32 bank_enable_mask = 0;
+	int ret;
+	int i;
+
+	for (i = 0; i < priv->chip_info->max_modules; i++) {
+		if (led_banks[i])
+			bank_enable_mask |= (1 << led_banks[i]);
+	}
+
+	led_config_lo = (u8)(bank_enable_mask & 0xff);
+	led_config_hi = (u8)(bank_enable_mask >> 8) & 0xff;
+
+	ret = regmap_write(priv->regmap, LP50XX_LED_CFG0, led_config_lo);
+	if (ret)
+		return ret;
+
+	if (priv->chip_info->model_id >= LP5030)
+		ret = regmap_write(priv->regmap, LP5036_LED_CFG1,
+				   led_config_hi);
+
+	return ret;
+}
+
+static int lp50xx_reset(struct lp50xx *priv)
+{
+	if (priv->enable_gpio)
+		return gpiod_direction_output(priv->enable_gpio, 1);
+	else
+		return regmap_write(priv->regmap, priv->chip_info->reset_reg,
+				    LP50XX_SW_RESET);
+}
+
+static int lp50xx_enable_disable(struct lp50xx *priv, u8 enable_disable)
+{
+	return regmap_write(priv->regmap, LP50XX_DEV_CFG0, enable_disable);
+}
+
+static int lp50xx_probe_dt(struct lp50xx *priv)
+{
+	u32 led_banks[LP5036_MAX_LED_MODULES] = {0};
+	struct fwnode_handle *child = NULL;
+	struct fwnode_handle *led_node = NULL;
+	struct led_init_data init_data = {};
+	struct led_classdev *led_cdev;
+	struct mc_subled *mc_led_info;
+	struct lp50xx_led *led;
+	int num_colors;
+	u32 color_id;
+	int led_number;
+	size_t i = 0;
+	int ret = -EINVAL;
+
+	priv->enable_gpio = devm_gpiod_get_optional(priv->dev,
+						   "enable", GPIOD_OUT_LOW);
+	if (IS_ERR(priv->enable_gpio)) {
+		ret = PTR_ERR(priv->enable_gpio);
+		dev_err(&priv->client->dev, "Failed to get enable gpio: %d\n",
+			ret);
+		return ret;
+	}
+
+	priv->regulator = devm_regulator_get(priv->dev, "vled");
+	if (IS_ERR(priv->regulator))
+		priv->regulator = NULL;
+
+	device_for_each_child_node(priv->dev, child) {
+		led = &priv->leds[i];
+		ret = fwnode_property_count_u32(child, "reg");
+		if (ret < 0) {
+			dev_err(&priv->client->dev,
+					"reg property is invalid\n");
+			return -EINVAL;
+		}
+		if (ret > 1) {
+			priv->num_of_banked_leds = ret;
+			if (priv->num_of_banked_leds >
+			    priv->chip_info->max_modules) {
+				dev_err(&priv->client->dev,
+					"reg property is invalid\n");
+				ret = -EINVAL;
+				fwnode_handle_put(child);
+				goto child_out;
+			}
+
+			ret = fwnode_property_read_u32_array(child,
+							     "reg",
+							     led_banks,
+							     ret);
+			if (ret) {
+				dev_err(&priv->client->dev,
+					"reg property is missing\n");
+				fwnode_handle_put(child);
+				goto child_out;
+			}
+
+			ret = lp50xx_set_banks(priv, led_banks);
+			if (ret) {
+				dev_err(&priv->client->dev,
+					"Cannot setup banked LEDs\n");
+				fwnode_handle_put(child);
+				goto child_out;
+			}
+			led->ctrl_bank_enabled = 1;
+
+		} else {
+			ret = fwnode_property_read_u32(child, "reg",
+					       &led_number);
+			if (ret) {
+				dev_err(&priv->client->dev,
+					"led reg property missing\n");
+				fwnode_handle_put(child);
+				goto child_out;
+			}
+
+			if (led_number > priv->chip_info->num_leds) {
+				dev_err(&priv->client->dev,
+					"led-sources property is invalid\n");
+				ret = -EINVAL;
+				fwnode_handle_put(child);
+				goto child_out;
+			}
+
+			led->led_number = led_number;
+		}
+
+		init_data.fwnode = child;
+		num_colors = 0;
+
+		/* There are only 3 LEDs per module otherwise they should be
+		 * banked which also is presented as 3 LEDs
+		 */
+		mc_led_info = devm_kcalloc(priv->dev, LP50XX_LEDS_PER_MODULE,
+					   sizeof(*mc_led_info), GFP_KERNEL);
+		if (!mc_led_info)
+			return -ENOMEM;
+
+		fwnode_for_each_child_node(child, led_node) {
+			ret = fwnode_property_read_u32(led_node, "color",
+						       &color_id);
+			if (ret)
+				dev_err(priv->dev, "Cannot read color\n");
+
+			mc_led_info[num_colors].color_index = color_id;
+			num_colors++;
+		}
+
+		led->priv = priv;
+		led->mc_cdev.num_colors = num_colors;
+		led->mc_cdev.subled_info = mc_led_info;
+		led_cdev = &led->mc_cdev.led_cdev;
+		led_cdev->brightness_set_blocking = lp50xx_brightness_set;
+
+		fwnode_property_read_string(child, "linux,default-trigger",
+				    	    &led_cdev->default_trigger);
+
+		ret = devm_led_classdev_multicolor_register_ext(&priv->client->dev,
+						       &led->mc_cdev,
+						       &init_data);
+		if (ret) {
+			dev_err(&priv->client->dev, "led register err: %d\n",
+				ret);
+			fwnode_handle_put(child);
+			goto child_out;
+		}
+		i++;
+	}
+
+child_out:
+	return ret;
+}
+
+static int lp50xx_probe(struct i2c_client *client,
+			const struct i2c_device_id *id)
+{
+	struct lp50xx *led;
+	int count;
+	int ret;
+
+	count = device_get_child_node_count(&client->dev);
+	if (!count) {
+		dev_err(&client->dev, "LEDs are not defined in device tree!");
+		return -ENODEV;
+	}
+
+	led = devm_kzalloc(&client->dev, struct_size(led, leds, count),
+			   GFP_KERNEL);
+	if (!led)
+		return -ENOMEM;
+
+	mutex_init(&led->lock);
+	led->client = client;
+	led->dev = &client->dev;
+	led->chip_info = &lp50xx_chip_info_tbl[id->driver_data];
+	i2c_set_clientdata(client, led);
+	led->regmap = devm_regmap_init_i2c(client,
+					led->chip_info->lp50xx_regmap_config);
+	if (IS_ERR(led->regmap)) {
+		ret = PTR_ERR(led->regmap);
+		dev_err(&client->dev, "Failed to allocate register map: %d\n",
+			ret);
+		return ret;
+	}
+
+	ret = lp50xx_reset(led);
+	if (ret)
+		return ret;
+
+	ret = lp50xx_probe_dt(led);
+	if (ret)
+		return ret;
+
+	return lp50xx_enable_disable(led, LP50XX_CHIP_EN);
+}
+
+static int lp50xx_remove(struct i2c_client *client)
+{
+	struct lp50xx *led = i2c_get_clientdata(client);
+	int ret;
+
+	ret = lp50xx_enable_disable(led, LP50XX_CHIP_EN);
+	if (ret) {
+		dev_err(&led->client->dev, "Failed to disable regulator\n");
+		return ret;
+	}
+
+	if (led->enable_gpio)
+		gpiod_direction_output(led->enable_gpio, 0);
+
+	if (led->regulator) {
+		ret = regulator_disable(led->regulator);
+		if (ret)
+			dev_err(&led->client->dev,
+				"Failed to disable regulator\n");
+	}
+
+	mutex_destroy(&led->lock);
+
+	return 0;
+}
+
+static const struct i2c_device_id lp50xx_id[] = {
+	{ "lp5009", LP5009 },
+	{ "lp5012", LP5012 },
+	{ "lp5018", LP5018 },
+	{ "lp5024", LP5024 },
+	{ "lp5030", LP5030 },
+	{ "lp5036", LP5036 },
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, lp50xx_id);
+
+static const struct of_device_id of_lp50xx_leds_match[] = {
+	{ .compatible = "ti,lp5009", .data = (void *)LP5009 },
+	{ .compatible = "ti,lp5012", .data = (void *)LP5012 },
+	{ .compatible = "ti,lp5018", .data = (void *)LP5018 },
+	{ .compatible = "ti,lp5024", .data = (void *)LP5024 },
+	{ .compatible = "ti,lp5030", .data = (void *)LP5030 },
+	{ .compatible = "ti,lp5036", .data = (void *)LP5036 },
+	{},
+};
+MODULE_DEVICE_TABLE(of, of_lp50xx_leds_match);
+
+static struct i2c_driver lp50xx_driver = {
+	.driver = {
+		.name	= "lp50xx",
+		.of_match_table = of_lp50xx_leds_match,
+	},
+	.probe		= lp50xx_probe,
+	.remove		= lp50xx_remove,
+	.id_table	= lp50xx_id,
+};
+module_i2c_driver(lp50xx_driver);
+
+MODULE_DESCRIPTION("Texas Instruments LP50XX LED driver");
+MODULE_AUTHOR("Dan Murphy <dmurphy@ti.com>");
+MODULE_LICENSE("GPL v2+");
-- 
2.27.0


^ permalink raw reply	[flat|nested] 27+ messages in thread

* [PATCH v30 08/16] dt-bindings: leds: Convert leds-lp55xx to yaml
  2020-07-13 15:45 [PATCH v30 00/16] Multicolor Framework v30 Dan Murphy
                   ` (6 preceding siblings ...)
  2020-07-13 15:45 ` [PATCH v30 07/16] leds: lp50xx: Add the LP50XX family of the RGB LED driver Dan Murphy
@ 2020-07-13 15:45 ` Dan Murphy
  2020-07-13 15:45 ` [PATCH v30 09/16] leds: lp55xx: Convert LED class registration to devm_* Dan Murphy
                   ` (7 subsequent siblings)
  15 siblings, 0 replies; 27+ messages in thread
From: Dan Murphy @ 2020-07-13 15:45 UTC (permalink / raw)
  To: jacek.anaszewski, pavel, robh, marek.behun
  Cc: devicetree, linux-leds, linux-kernel, linux-arm-kernel, Dan Murphy

Convert the leds-lp55xx.txt to yaml binding.

Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Dan Murphy <dmurphy@ti.com>
---
 .../devicetree/bindings/leds/leds-lp55xx.txt  | 228 ------------------
 .../devicetree/bindings/leds/leds-lp55xx.yaml | 220 +++++++++++++++++
 2 files changed, 220 insertions(+), 228 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/leds/leds-lp55xx.txt
 create mode 100644 Documentation/devicetree/bindings/leds/leds-lp55xx.yaml

diff --git a/Documentation/devicetree/bindings/leds/leds-lp55xx.txt b/Documentation/devicetree/bindings/leds/leds-lp55xx.txt
deleted file mode 100644
index 1b66a413fb9d..000000000000
--- a/Documentation/devicetree/bindings/leds/leds-lp55xx.txt
+++ /dev/null
@@ -1,228 +0,0 @@
-Binding for TI/National Semiconductor LP55xx Led Drivers
-
-Required properties:
-- compatible: one of
-	national,lp5521
-	national,lp5523
-	ti,lp55231
-	ti,lp5562
-	ti,lp8501
-
-- reg: I2C slave address
-- clock-mode: Input clock mode, (0: automode, 1: internal, 2: external)
-
-Each child has own specific current settings
-- led-cur: Current setting at each led channel (mA x10, 0 if led is not connected)
-- max-cur: Maximun current at each led channel.
-
-Optional properties:
-- enable-gpio: GPIO attached to the chip's enable pin
-- label: Used for naming LEDs
-- pwr-sel: LP8501 specific property. Power selection for output channels.
-         0: D1~9 are connected to VDD
-         1: D1~6 with VDD, D7~9 with VOUT
-         2: D1~6 with VOUT, D7~9 with VDD
-         3: D1~9 are connected to VOUT
-
-Alternatively, each child can have a specific channel name and trigger:
-- chan-name (optional): name of channel
-- linux,default-trigger (optional): see
-  Documentation/devicetree/bindings/leds/common.txt
-
-example 1) LP5521
-3 LED channels, external clock used. Channel names are 'lp5521_pri:channel0',
-'lp5521_pri:channel1' and 'lp5521_pri:channel2', with a heartbeat trigger
-on channel 0.
-
-lp5521@32 {
-	compatible = "national,lp5521";
-	reg = <0x32>;
-	label = "lp5521_pri";
-	clock-mode = /bits/ 8 <2>;
-
-	chan0 {
-		led-cur = /bits/ 8 <0x2f>;
-		max-cur = /bits/ 8 <0x5f>;
-		linux,default-trigger = "heartbeat";
-	};
-
-	chan1 {
-		led-cur = /bits/ 8 <0x2f>;
-		max-cur = /bits/ 8 <0x5f>;
-	};
-
-	chan2 {
-		led-cur = /bits/ 8 <0x2f>;
-		max-cur = /bits/ 8 <0x5f>;
-	};
-};
-
-example 2) LP5523
-9 LED channels with specific name. Internal clock used.
-The I2C slave address is configurable with ASEL1 and ASEL0 pins.
-Available addresses are 32/33/34/35h.
-
-ASEL1    ASEL0    Address
--------------------------
- GND      GND       32h
- GND      VEN       33h
- VEN      GND       34h
- VEN      VEN       35h
-
-lp5523@32 {
-	compatible = "national,lp5523";
-	reg = <0x32>;
-	clock-mode = /bits/ 8 <1>;
-
-	chan0 {
-		chan-name = "d1";
-		led-cur = /bits/ 8 <0x14>;
-		max-cur = /bits/ 8 <0x20>;
-	};
-
-	chan1 {
-		chan-name = "d2";
-		led-cur = /bits/ 8 <0x14>;
-		max-cur = /bits/ 8 <0x20>;
-	};
-
-	chan2 {
-		chan-name = "d3";
-		led-cur = /bits/ 8 <0x14>;
-		max-cur = /bits/ 8 <0x20>;
-	};
-
-	chan3 {
-		chan-name = "d4";
-		led-cur = /bits/ 8 <0x14>;
-		max-cur = /bits/ 8 <0x20>;
-	};
-
-	chan4 {
-		chan-name = "d5";
-		led-cur = /bits/ 8 <0x14>;
-		max-cur = /bits/ 8 <0x20>;
-	};
-
-	chan5 {
-		chan-name = "d6";
-		led-cur = /bits/ 8 <0x14>;
-		max-cur = /bits/ 8 <0x20>;
-	};
-
-	chan6 {
-		chan-name = "d7";
-		led-cur = /bits/ 8 <0x14>;
-		max-cur = /bits/ 8 <0x20>;
-	};
-
-	chan7 {
-		chan-name = "d8";
-		led-cur = /bits/ 8 <0x14>;
-		max-cur = /bits/ 8 <0x20>;
-	};
-
-	chan8 {
-		chan-name = "d9";
-		led-cur = /bits/ 8 <0x14>;
-		max-cur = /bits/ 8 <0x20>;
-	};
-};
-
-example 3) LP5562
-4 channels are defined.
-
-lp5562@30 {
-	compatible = "ti,lp5562";
-	reg = <0x30>;
-	clock-mode = /bits/8 <2>;
-
-	chan0 {
-		chan-name = "R";
-		led-cur = /bits/ 8 <0x20>;
-		max-cur = /bits/ 8 <0x60>;
-	};
-
-	chan1 {
-		chan-name = "G";
-		led-cur = /bits/ 8 <0x20>;
-		max-cur = /bits/ 8 <0x60>;
-	};
-
-	chan2 {
-		chan-name = "B";
-		led-cur = /bits/ 8 <0x20>;
-		max-cur = /bits/ 8 <0x60>;
-	};
-
-	chan3 {
-		chan-name = "W";
-		led-cur = /bits/ 8 <0x20>;
-		max-cur = /bits/ 8 <0x60>;
-	};
-};
-
-example 4) LP8501
-9 channels are defined. The 'pwr-sel' is LP8501 specific property.
-Others are same as LP5523.
-
-lp8501@32 {
-	compatible = "ti,lp8501";
-	reg = <0x32>;
-	clock-mode = /bits/ 8 <2>;
-	pwr-sel = /bits/ 8 <3>;	/* D1~9 connected to VOUT */
-
-	chan0 {
-		chan-name = "d1";
-		led-cur = /bits/ 8 <0x14>;
-		max-cur = /bits/ 8 <0x20>;
-	};
-
-	chan1 {
-		chan-name = "d2";
-		led-cur = /bits/ 8 <0x14>;
-		max-cur = /bits/ 8 <0x20>;
-	};
-
-	chan2 {
-		chan-name = "d3";
-		led-cur = /bits/ 8 <0x14>;
-		max-cur = /bits/ 8 <0x20>;
-	};
-
-	chan3 {
-		chan-name = "d4";
-		led-cur = /bits/ 8 <0x14>;
-		max-cur = /bits/ 8 <0x20>;
-	};
-
-	chan4 {
-		chan-name = "d5";
-		led-cur = /bits/ 8 <0x14>;
-		max-cur = /bits/ 8 <0x20>;
-	};
-
-	chan5 {
-		chan-name = "d6";
-		led-cur = /bits/ 8 <0x14>;
-		max-cur = /bits/ 8 <0x20>;
-	};
-
-	chan6 {
-		chan-name = "d7";
-		led-cur = /bits/ 8 <0x14>;
-		max-cur = /bits/ 8 <0x20>;
-	};
-
-	chan7 {
-		chan-name = "d8";
-		led-cur = /bits/ 8 <0x14>;
-		max-cur = /bits/ 8 <0x20>;
-	};
-
-	chan8 {
-		chan-name = "d9";
-		led-cur = /bits/ 8 <0x14>;
-		max-cur = /bits/ 8 <0x20>;
-	};
-};
diff --git a/Documentation/devicetree/bindings/leds/leds-lp55xx.yaml b/Documentation/devicetree/bindings/leds/leds-lp55xx.yaml
new file mode 100644
index 000000000000..b1bb3feb0f4d
--- /dev/null
+++ b/Documentation/devicetree/bindings/leds/leds-lp55xx.yaml
@@ -0,0 +1,220 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/leds/leds-lp55xx.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: TI/National Semiconductor LP55xx and LP8501 LED Drivers
+
+maintainers:
+  - Jacek Anaszewski <jacek.anaszewski@gmail.com>
+  - Pavel Machek <pavel@ucw.cz>
+
+description: |
+  Bindings for the TI/National Semiconductor LP55xx and LP8501 multi channel
+  LED Drivers.
+
+  For more product information please see the link below:
+    https://www.ti.com/lit/gpn/lp5521
+    https://www.ti.com/lit/gpn/lp5523
+    https://www.ti.com/lit/gpn/lp55231
+    https://www.ti.com/lit/gpn/lp5562
+    https://www.ti.com/lit/gpn/lp8501
+
+properties:
+  compatible:
+    enum:
+      - national,lp5521
+      - national,lp5523
+      - ti,lp55231
+      - ti,lp5562
+      - ti,lp8501
+
+  reg:
+    maxItems: 1
+    description: I2C slave address
+
+  clock-mode:
+    $ref: /schemas/types.yaml#definitions/uint8
+    description: |
+      Input clock mode
+    enum:
+      - 0 # automode
+      - 1 # internal
+      - 2 # external
+
+  enable-gpio:
+    maxItems: 1
+    description: |
+      GPIO attached to the chip's enable pin
+
+  pwr-sel:
+    $ref: /schemas/types.yaml#definitions/uint8
+    description: |
+      LP8501 specific property. Power selection for output channels.
+    enum:
+      - 0 # D1~9 are connected to VDD
+      - 1 # D1~6 with VDD, D7~9 with VOUT
+      - 2 # D1~6 with VOUT, D7~9 with VDD
+      - 3 # D1~9 are connected to VOUT
+
+patternProperties:
+  "(^led@[0-9a-f]$|led)":
+    type: object
+    $ref: common.yaml#
+    properties:
+      led-cur:
+        $ref: /schemas/types.yaml#definitions/uint8
+        description: |
+          Current setting at each LED channel (mA x10, 0 if LED is not connected)
+        minimum: 0
+        maximum: 255
+
+      max-cur:
+        $ref: /schemas/types.yaml#definitions/uint8
+        description: Maximun current at each LED channel.
+
+      reg:
+        description: |
+          Output channel for the LED.  This is zero based channel identifier and
+          the data sheet is a one based channel identifier.
+          reg value to output to LED output number
+        enum:
+          - 0 # LED output D1
+          - 1 # LED output D2
+          - 2 # LED output D3
+          - 3 # LED output D4
+          - 4 # LED output D5
+          - 5 # LED output D6
+          - 6 # LED output D7
+          - 7 # LED output D8
+          - 8 # LED output D9
+
+      chan-name:
+        $ref: /schemas/types.yaml#definitions/string
+        description: name of channel
+
+required:
+  - compatible
+  - reg
+
+examples:
+  - |
+   #include <dt-bindings/leds/common.h>
+
+   i2c {
+       #address-cells = <1>;
+       #size-cells = <0>;
+
+       led-controller@32 {
+           #address-cells = <1>;
+           #size-cells = <0>;
+           compatible = "ti,lp8501";
+           reg = <0x32>;
+           clock-mode = /bits/ 8 <2>;
+           pwr-sel = /bits/ 8 <3>;	/* D1~9 connected to VOUT */
+
+           led@0 {
+               reg = <0>;
+               chan-name = "d1";
+               led-cur = /bits/ 8 <0x14>;
+               max-cur = /bits/ 8 <0x20>;
+           };
+
+           led@1 {
+               reg = <1>;
+               chan-name = "d2";
+               led-cur = /bits/ 8 <0x14>;
+               max-cur = /bits/ 8 <0x20>;
+           };
+
+           led@2 {
+               reg = <2>;
+               chan-name = "d3";
+               led-cur = /bits/ 8 <0x14>;
+               max-cur = /bits/ 8 <0x20>;
+           };
+
+           led@3 {
+               reg = <3>;
+               chan-name = "d4";
+               led-cur = /bits/ 8 <0x14>;
+               max-cur = /bits/ 8 <0x20>;
+           };
+
+           led@4 {
+               reg = <4>;
+               chan-name = "d5";
+               led-cur = /bits/ 8 <0x14>;
+               max-cur = /bits/ 8 <0x20>;
+           };
+
+           led@5 {
+               reg = <5>;
+               chan-name = "d6";
+               led-cur = /bits/ 8 <0x14>;
+               max-cur = /bits/ 8 <0x20>;
+           };
+
+           led@6 {
+               reg = <6>;
+               chan-name = "d7";
+               led-cur = /bits/ 8 <0x14>;
+               max-cur = /bits/ 8 <0x20>;
+           };
+
+           led@7 {
+               reg = <7>;
+               chan-name = "d8";
+               led-cur = /bits/ 8 <0x14>;
+               max-cur = /bits/ 8 <0x20>;
+           };
+
+           led@8 {
+               reg = <8>;
+               chan-name = "d9";
+               led-cur = /bits/ 8 <0x14>;
+               max-cur = /bits/ 8 <0x20>;
+           };
+        };
+
+       led-controller@33 {
+           #address-cells = <1>;
+           #size-cells = <0>;
+           compatible = "national,lp5523";
+           reg = <0x33>;
+           clock-mode = /bits/ 8 <0>;
+
+           multi-led@2 {
+               #address-cells = <1>;
+               #size-cells = <0>;
+               reg = <0x2>;
+               color = <LED_COLOR_ID_MULTI>;
+               function = LED_FUNCTION_STANDBY;
+               linux,default-trigger = "heartbeat";
+
+               led@0 {
+                   led-cur = /bits/ 8 <50>;
+                   max-cur = /bits/ 8 <100>;
+                   reg = <0x0>;
+                   color = <LED_COLOR_ID_GREEN>;
+               };
+
+               led@1 {
+                   led-cur = /bits/ 8 <50>;
+                   max-cur = /bits/ 8 <100>;
+                   reg = <0x1>;
+                   color = <LED_COLOR_ID_BLUE>;
+               };
+
+               led@6 {
+                   led-cur = /bits/ 8 <50>;
+                   max-cur = /bits/ 8 <100>;
+                   reg = <0x6>;
+                   color = <LED_COLOR_ID_RED>;
+               };
+            };
+        };
+    };
+
+...
-- 
2.27.0


^ permalink raw reply	[flat|nested] 27+ messages in thread

* [PATCH v30 09/16] leds: lp55xx: Convert LED class registration to devm_*
  2020-07-13 15:45 [PATCH v30 00/16] Multicolor Framework v30 Dan Murphy
                   ` (7 preceding siblings ...)
  2020-07-13 15:45 ` [PATCH v30 08/16] dt-bindings: leds: Convert leds-lp55xx to yaml Dan Murphy
@ 2020-07-13 15:45 ` Dan Murphy
  2020-07-13 15:45 ` [PATCH v30 10/16] leds: lp55xx: Add multicolor framework support to lp55xx Dan Murphy
                   ` (6 subsequent siblings)
  15 siblings, 0 replies; 27+ messages in thread
From: Dan Murphy @ 2020-07-13 15:45 UTC (permalink / raw)
  To: jacek.anaszewski, pavel, robh, marek.behun
  Cc: devicetree, linux-leds, linux-kernel, linux-arm-kernel, Dan Murphy

Convert the LED class registration calls to the LED devm_*
registration calls.

Acked-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Dan Murphy <dmurphy@ti.com>
---
 drivers/leds/leds-lp5521.c        |  9 +++------
 drivers/leds/leds-lp5523.c        |  9 +++------
 drivers/leds/leds-lp5562.c        |  9 +++------
 drivers/leds/leds-lp55xx-common.c | 15 +--------------
 drivers/leds/leds-lp55xx-common.h |  2 --
 drivers/leds/leds-lp8501.c        |  9 +++------
 6 files changed, 13 insertions(+), 40 deletions(-)

diff --git a/drivers/leds/leds-lp5521.c b/drivers/leds/leds-lp5521.c
index 6f0272249dc8..6d2163c0f625 100644
--- a/drivers/leds/leds-lp5521.c
+++ b/drivers/leds/leds-lp5521.c
@@ -541,19 +541,17 @@ static int lp5521_probe(struct i2c_client *client,
 
 	ret = lp55xx_register_leds(led, chip);
 	if (ret)
-		goto err_register_leds;
+		goto err_out;
 
 	ret = lp55xx_register_sysfs(chip);
 	if (ret) {
 		dev_err(&client->dev, "registering sysfs failed\n");
-		goto err_register_sysfs;
+		goto err_out;
 	}
 
 	return 0;
 
-err_register_sysfs:
-	lp55xx_unregister_leds(led, chip);
-err_register_leds:
+err_out:
 	lp55xx_deinit_device(chip);
 err_init:
 	return ret;
@@ -566,7 +564,6 @@ static int lp5521_remove(struct i2c_client *client)
 
 	lp5521_stop_all_engines(chip);
 	lp55xx_unregister_sysfs(chip);
-	lp55xx_unregister_leds(led, chip);
 	lp55xx_deinit_device(chip);
 
 	return 0;
diff --git a/drivers/leds/leds-lp5523.c b/drivers/leds/leds-lp5523.c
index 8518de957b48..cb550cf19e14 100644
--- a/drivers/leds/leds-lp5523.c
+++ b/drivers/leds/leds-lp5523.c
@@ -909,19 +909,17 @@ static int lp5523_probe(struct i2c_client *client,
 
 	ret = lp55xx_register_leds(led, chip);
 	if (ret)
-		goto err_register_leds;
+		goto err_out;
 
 	ret = lp55xx_register_sysfs(chip);
 	if (ret) {
 		dev_err(&client->dev, "registering sysfs failed\n");
-		goto err_register_sysfs;
+		goto err_out;
 	}
 
 	return 0;
 
-err_register_sysfs:
-	lp55xx_unregister_leds(led, chip);
-err_register_leds:
+err_out:
 	lp55xx_deinit_device(chip);
 err_init:
 	return ret;
@@ -934,7 +932,6 @@ static int lp5523_remove(struct i2c_client *client)
 
 	lp5523_stop_all_engines(chip);
 	lp55xx_unregister_sysfs(chip);
-	lp55xx_unregister_leds(led, chip);
 	lp55xx_deinit_device(chip);
 
 	return 0;
diff --git a/drivers/leds/leds-lp5562.c b/drivers/leds/leds-lp5562.c
index edb57c42e8b1..1c94422408b0 100644
--- a/drivers/leds/leds-lp5562.c
+++ b/drivers/leds/leds-lp5562.c
@@ -554,19 +554,17 @@ static int lp5562_probe(struct i2c_client *client,
 
 	ret = lp55xx_register_leds(led, chip);
 	if (ret)
-		goto err_register_leds;
+		goto err_out;
 
 	ret = lp55xx_register_sysfs(chip);
 	if (ret) {
 		dev_err(&client->dev, "registering sysfs failed\n");
-		goto err_register_sysfs;
+		goto err_out;
 	}
 
 	return 0;
 
-err_register_sysfs:
-	lp55xx_unregister_leds(led, chip);
-err_register_leds:
+err_out:
 	lp55xx_deinit_device(chip);
 err_init:
 	return ret;
@@ -580,7 +578,6 @@ static int lp5562_remove(struct i2c_client *client)
 	lp5562_stop_engine(chip);
 
 	lp55xx_unregister_sysfs(chip);
-	lp55xx_unregister_leds(led, chip);
 	lp55xx_deinit_device(chip);
 
 	return 0;
diff --git a/drivers/leds/leds-lp55xx-common.c b/drivers/leds/leds-lp55xx-common.c
index 3d0bc4dcd9f2..243c749ebda5 100644
--- a/drivers/leds/leds-lp55xx-common.c
+++ b/drivers/leds/leds-lp55xx-common.c
@@ -179,7 +179,7 @@ static int lp55xx_init_led(struct lp55xx_led *led,
 		led->cdev.name = name;
 	}
 
-	ret = led_classdev_register(dev, &led->cdev);
+	ret = devm_led_classdev_register(dev, &led->cdev);
 	if (ret) {
 		dev_err(dev, "led register err: %d\n", ret);
 		return ret;
@@ -480,23 +480,10 @@ int lp55xx_register_leds(struct lp55xx_led *led, struct lp55xx_chip *chip)
 	return 0;
 
 err_init_led:
-	lp55xx_unregister_leds(led, chip);
 	return ret;
 }
 EXPORT_SYMBOL_GPL(lp55xx_register_leds);
 
-void lp55xx_unregister_leds(struct lp55xx_led *led, struct lp55xx_chip *chip)
-{
-	int i;
-	struct lp55xx_led *each;
-
-	for (i = 0; i < chip->num_leds; i++) {
-		each = led + i;
-		led_classdev_unregister(&each->cdev);
-	}
-}
-EXPORT_SYMBOL_GPL(lp55xx_unregister_leds);
-
 int lp55xx_register_sysfs(struct lp55xx_chip *chip)
 {
 	struct device *dev = &chip->cl->dev;
diff --git a/drivers/leds/leds-lp55xx-common.h b/drivers/leds/leds-lp55xx-common.h
index 783ed5103ce5..b9b1041e8143 100644
--- a/drivers/leds/leds-lp55xx-common.h
+++ b/drivers/leds/leds-lp55xx-common.h
@@ -189,8 +189,6 @@ extern void lp55xx_deinit_device(struct lp55xx_chip *chip);
 /* common LED class device functions */
 extern int lp55xx_register_leds(struct lp55xx_led *led,
 				struct lp55xx_chip *chip);
-extern void lp55xx_unregister_leds(struct lp55xx_led *led,
-				struct lp55xx_chip *chip);
 
 /* common device attributes functions */
 extern int lp55xx_register_sysfs(struct lp55xx_chip *chip);
diff --git a/drivers/leds/leds-lp8501.c b/drivers/leds/leds-lp8501.c
index 2638dbf0e8ac..a58019cdb8c3 100644
--- a/drivers/leds/leds-lp8501.c
+++ b/drivers/leds/leds-lp8501.c
@@ -344,19 +344,17 @@ static int lp8501_probe(struct i2c_client *client,
 
 	ret = lp55xx_register_leds(led, chip);
 	if (ret)
-		goto err_register_leds;
+		goto err_out;
 
 	ret = lp55xx_register_sysfs(chip);
 	if (ret) {
 		dev_err(&client->dev, "registering sysfs failed\n");
-		goto err_register_sysfs;
+		goto err_out;
 	}
 
 	return 0;
 
-err_register_sysfs:
-	lp55xx_unregister_leds(led, chip);
-err_register_leds:
+err_out:
 	lp55xx_deinit_device(chip);
 err_init:
 	return ret;
@@ -369,7 +367,6 @@ static int lp8501_remove(struct i2c_client *client)
 
 	lp8501_stop_engine(chip);
 	lp55xx_unregister_sysfs(chip);
-	lp55xx_unregister_leds(led, chip);
 	lp55xx_deinit_device(chip);
 
 	return 0;
-- 
2.27.0


^ permalink raw reply	[flat|nested] 27+ messages in thread

* [PATCH v30 10/16] leds: lp55xx: Add multicolor framework support to lp55xx
  2020-07-13 15:45 [PATCH v30 00/16] Multicolor Framework v30 Dan Murphy
                   ` (8 preceding siblings ...)
  2020-07-13 15:45 ` [PATCH v30 09/16] leds: lp55xx: Convert LED class registration to devm_* Dan Murphy
@ 2020-07-13 15:45 ` Dan Murphy
  2020-07-13 15:45 ` [PATCH v30 11/16] ARM: defconfig: u8500: Add LP55XX_COMMON config flag Dan Murphy
                   ` (5 subsequent siblings)
  15 siblings, 0 replies; 27+ messages in thread
From: Dan Murphy @ 2020-07-13 15:45 UTC (permalink / raw)
  To: jacek.anaszewski, pavel, robh, marek.behun
  Cc: devicetree, linux-leds, linux-kernel, linux-arm-kernel, Dan Murphy

Add multicolor framework support for the lp55xx family.

Acked-by: Pavel Machek <pavel@ucw.cz>
Acked-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
Signed-off-by: Dan Murphy <dmurphy@ti.com>
---
 drivers/leds/Kconfig                      |  11 +-
 drivers/leds/leds-lp5521.c                |  14 +-
 drivers/leds/leds-lp5523.c                |  14 +-
 drivers/leds/leds-lp5562.c                |  13 +-
 drivers/leds/leds-lp55xx-common.c         | 177 +++++++++++++++++++---
 drivers/leds/leds-lp55xx-common.h         |  14 +-
 drivers/leds/leds-lp8501.c                |  14 +-
 include/linux/platform_data/leds-lp55xx.h |   7 +
 8 files changed, 212 insertions(+), 52 deletions(-)

diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig
index 68f63d1a7d48..f23f2edc81e7 100644
--- a/drivers/leds/Kconfig
+++ b/drivers/leds/Kconfig
@@ -397,7 +397,8 @@ config LEDS_LP50XX
 
 config LEDS_LP55XX_COMMON
 	tristate "Common Driver for TI/National LP5521/5523/55231/5562/8501"
-	depends on LEDS_LP5521 || LEDS_LP5523 || LEDS_LP5562 || LEDS_LP8501
+	depends on LEDS_CLASS_MULTI_COLOR || !LEDS_CLASS_MULTI_COLOR
+	depends on OF
 	select FW_LOADER
 	select FW_LOADER_USER_HELPER
 	help
@@ -407,7 +408,7 @@ config LEDS_LP55XX_COMMON
 config LEDS_LP5521
 	tristate "LED Support for N.S. LP5521 LED driver chip"
 	depends on LEDS_CLASS && I2C
-	select LEDS_LP55XX_COMMON
+	depends on LEDS_LP55XX_COMMON
 	help
 	  If you say yes here you get support for the National Semiconductor
 	  LP5521 LED driver. It is 3 channel chip with programmable engines.
@@ -417,7 +418,7 @@ config LEDS_LP5521
 config LEDS_LP5523
 	tristate "LED Support for TI/National LP5523/55231 LED driver chip"
 	depends on LEDS_CLASS && I2C
-	select LEDS_LP55XX_COMMON
+	depends on LEDS_LP55XX_COMMON
 	help
 	  If you say yes here you get support for TI/National Semiconductor
 	  LP5523/55231 LED driver.
@@ -428,7 +429,7 @@ config LEDS_LP5523
 config LEDS_LP5562
 	tristate "LED Support for TI LP5562 LED driver chip"
 	depends on LEDS_CLASS && I2C
-	select LEDS_LP55XX_COMMON
+	depends on LEDS_LP55XX_COMMON
 	help
 	  If you say yes here you get support for TI LP5562 LED driver.
 	  It is 4 channels chip with programmable engines.
@@ -438,7 +439,7 @@ config LEDS_LP5562
 config LEDS_LP8501
 	tristate "LED Support for TI LP8501 LED driver chip"
 	depends on LEDS_CLASS && I2C
-	select LEDS_LP55XX_COMMON
+	depends on LEDS_LP55XX_COMMON
 	help
 	  If you say yes here you get support for TI LP8501 LED driver.
 	  It is 9 channel chip with programmable engines.
diff --git a/drivers/leds/leds-lp5521.c b/drivers/leds/leds-lp5521.c
index 6d2163c0f625..6ff81d6be789 100644
--- a/drivers/leds/leds-lp5521.c
+++ b/drivers/leds/leds-lp5521.c
@@ -505,9 +505,16 @@ static int lp5521_probe(struct i2c_client *client,
 	struct lp55xx_platform_data *pdata = dev_get_platdata(&client->dev);
 	struct device_node *np = client->dev.of_node;
 
+	chip = devm_kzalloc(&client->dev, sizeof(*chip), GFP_KERNEL);
+	if (!chip)
+		return -ENOMEM;
+
+	chip->cfg = &lp5521_cfg;
+
 	if (!pdata) {
 		if (np) {
-			pdata = lp55xx_of_populate_pdata(&client->dev, np);
+			pdata = lp55xx_of_populate_pdata(&client->dev, np,
+							 chip);
 			if (IS_ERR(pdata))
 				return PTR_ERR(pdata);
 		} else {
@@ -516,10 +523,6 @@ static int lp5521_probe(struct i2c_client *client,
 		}
 	}
 
-	chip = devm_kzalloc(&client->dev, sizeof(*chip), GFP_KERNEL);
-	if (!chip)
-		return -ENOMEM;
-
 	led = devm_kcalloc(&client->dev,
 			pdata->num_channels, sizeof(*led), GFP_KERNEL);
 	if (!led)
@@ -527,7 +530,6 @@ static int lp5521_probe(struct i2c_client *client,
 
 	chip->cl = client;
 	chip->pdata = pdata;
-	chip->cfg = &lp5521_cfg;
 
 	mutex_init(&chip->lock);
 
diff --git a/drivers/leds/leds-lp5523.c b/drivers/leds/leds-lp5523.c
index cb550cf19e14..bb97549007d7 100644
--- a/drivers/leds/leds-lp5523.c
+++ b/drivers/leds/leds-lp5523.c
@@ -873,9 +873,16 @@ static int lp5523_probe(struct i2c_client *client,
 	struct lp55xx_platform_data *pdata = dev_get_platdata(&client->dev);
 	struct device_node *np = client->dev.of_node;
 
+	chip = devm_kzalloc(&client->dev, sizeof(*chip), GFP_KERNEL);
+	if (!chip)
+		return -ENOMEM;
+
+	chip->cfg = &lp5523_cfg;
+
 	if (!pdata) {
 		if (np) {
-			pdata = lp55xx_of_populate_pdata(&client->dev, np);
+			pdata = lp55xx_of_populate_pdata(&client->dev, np,
+							 chip);
 			if (IS_ERR(pdata))
 				return PTR_ERR(pdata);
 		} else {
@@ -884,10 +891,6 @@ static int lp5523_probe(struct i2c_client *client,
 		}
 	}
 
-	chip = devm_kzalloc(&client->dev, sizeof(*chip), GFP_KERNEL);
-	if (!chip)
-		return -ENOMEM;
-
 	led = devm_kcalloc(&client->dev,
 			pdata->num_channels, sizeof(*led), GFP_KERNEL);
 	if (!led)
@@ -895,7 +898,6 @@ static int lp5523_probe(struct i2c_client *client,
 
 	chip->cl = client;
 	chip->pdata = pdata;
-	chip->cfg = &lp5523_cfg;
 
 	mutex_init(&chip->lock);
 
diff --git a/drivers/leds/leds-lp5562.c b/drivers/leds/leds-lp5562.c
index 1c94422408b0..7ecdd199d7ef 100644
--- a/drivers/leds/leds-lp5562.c
+++ b/drivers/leds/leds-lp5562.c
@@ -520,9 +520,16 @@ static int lp5562_probe(struct i2c_client *client,
 	struct lp55xx_platform_data *pdata = dev_get_platdata(&client->dev);
 	struct device_node *np = client->dev.of_node;
 
+	chip = devm_kzalloc(&client->dev, sizeof(*chip), GFP_KERNEL);
+	if (!chip)
+		return -ENOMEM;
+
+	chip->cfg = &lp5562_cfg;
+
 	if (!pdata) {
 		if (np) {
-			pdata = lp55xx_of_populate_pdata(&client->dev, np);
+			pdata = lp55xx_of_populate_pdata(&client->dev, np,
+							 chip);
 			if (IS_ERR(pdata))
 				return PTR_ERR(pdata);
 		} else {
@@ -531,9 +538,6 @@ static int lp5562_probe(struct i2c_client *client,
 		}
 	}
 
-	chip = devm_kzalloc(&client->dev, sizeof(*chip), GFP_KERNEL);
-	if (!chip)
-		return -ENOMEM;
 
 	led = devm_kcalloc(&client->dev,
 			pdata->num_channels, sizeof(*led), GFP_KERNEL);
@@ -542,7 +546,6 @@ static int lp5562_probe(struct i2c_client *client,
 
 	chip->cl = client;
 	chip->pdata = pdata;
-	chip->cfg = &lp5562_cfg;
 
 	mutex_init(&chip->lock);
 
diff --git a/drivers/leds/leds-lp55xx-common.c b/drivers/leds/leds-lp55xx-common.c
index 243c749ebda5..af14e2b2d577 100644
--- a/drivers/leds/leds-lp55xx-common.c
+++ b/drivers/leds/leds-lp55xx-common.c
@@ -34,6 +34,11 @@ static struct lp55xx_led *dev_to_lp55xx_led(struct device *dev)
 	return cdev_to_lp55xx_led(dev_get_drvdata(dev));
 }
 
+static struct lp55xx_led *mcled_cdev_to_led(struct led_classdev_mc *mc_cdev)
+{
+	return container_of(mc_cdev, struct lp55xx_led, mc_cdev);
+}
+
 static void lp55xx_reset_device(struct lp55xx_chip *chip)
 {
 	struct lp55xx_device_config *cfg = chip->cfg;
@@ -129,6 +134,18 @@ static struct attribute *lp55xx_led_attrs[] = {
 };
 ATTRIBUTE_GROUPS(lp55xx_led);
 
+static int lp55xx_set_mc_brightness(struct led_classdev *cdev,
+				    enum led_brightness brightness)
+{
+	struct led_classdev_mc *mc_dev = lcdev_to_mccdev(cdev);
+	struct lp55xx_led *led = mcled_cdev_to_led(mc_dev);
+	struct lp55xx_device_config *cfg = led->chip->cfg;
+
+	led_mc_calc_color_components(&led->mc_cdev, brightness);
+	return cfg->multicolor_brightness_fn(led);
+
+}
+
 static int lp55xx_set_brightness(struct led_classdev *cdev,
 			     enum led_brightness brightness)
 {
@@ -145,9 +162,12 @@ static int lp55xx_init_led(struct lp55xx_led *led,
 	struct lp55xx_platform_data *pdata = chip->pdata;
 	struct lp55xx_device_config *cfg = chip->cfg;
 	struct device *dev = &chip->cl->dev;
+	int max_channel = cfg->max_channel;
+	struct mc_subled *mc_led_info;
+	struct led_classdev *led_cdev;
 	char name[32];
+	int i, j = 0;
 	int ret;
-	int max_channel = cfg->max_channel;
 
 	if (chan >= max_channel) {
 		dev_err(dev, "invalid channel: %d / %d\n", chan, max_channel);
@@ -157,10 +177,43 @@ static int lp55xx_init_led(struct lp55xx_led *led,
 	if (pdata->led_config[chan].led_current == 0)
 		return 0;
 
+	if (pdata->led_config[chan].name) {
+		led->cdev.name = pdata->led_config[chan].name;
+	} else {
+		snprintf(name, sizeof(name), "%s:channel%d",
+			pdata->label ? : chip->cl->name, chan);
+		led->cdev.name = name;
+	}
+
+	if (pdata->led_config[chan].num_colors > 1) {
+		mc_led_info = devm_kcalloc(dev,
+					   pdata->led_config[chan].num_colors,
+					   sizeof(*mc_led_info), GFP_KERNEL);
+		if (!mc_led_info)
+			return -ENOMEM;
+
+		led_cdev = &led->mc_cdev.led_cdev;
+		led_cdev->name = led->cdev.name;
+		led_cdev->brightness_set_blocking = lp55xx_set_mc_brightness;
+		led->mc_cdev.num_colors = pdata->led_config[chan].num_colors;
+		for (i = 0; i < led->mc_cdev.num_colors; i++) {
+			mc_led_info[i].color_index =
+				pdata->led_config[chan].color_id[i];
+			mc_led_info[i].channel =
+					pdata->led_config[chan].output_num[i];
+			j++;
+		}
+
+		led->mc_cdev.subled_info = mc_led_info;
+	} else {
+		led->cdev.brightness_set_blocking = lp55xx_set_brightness;
+	}
+
+	led->cdev.groups = lp55xx_led_groups;
+	led->cdev.default_trigger = pdata->led_config[chan].default_trigger;
 	led->led_current = pdata->led_config[chan].led_current;
 	led->max_current = pdata->led_config[chan].max_current;
 	led->chan_nr = pdata->led_config[chan].chan_nr;
-	led->cdev.default_trigger = pdata->led_config[chan].default_trigger;
 
 	if (led->chan_nr >= max_channel) {
 		dev_err(dev, "Use channel numbers between 0 and %d\n",
@@ -168,18 +221,11 @@ static int lp55xx_init_led(struct lp55xx_led *led,
 		return -EINVAL;
 	}
 
-	led->cdev.brightness_set_blocking = lp55xx_set_brightness;
-	led->cdev.groups = lp55xx_led_groups;
-
-	if (pdata->led_config[chan].name) {
-		led->cdev.name = pdata->led_config[chan].name;
-	} else {
-		snprintf(name, sizeof(name), "%s:channel%d",
-			pdata->label ? : chip->cl->name, chan);
-		led->cdev.name = name;
-	}
+	if (pdata->led_config[chan].num_colors > 1)
+		ret = devm_led_classdev_multicolor_register(dev, &led->mc_cdev);
+	else
+		ret = devm_led_classdev_register(dev, &led->cdev);
 
-	ret = devm_led_classdev_register(dev, &led->cdev);
 	if (ret) {
 		dev_err(dev, "led register err: %d\n", ret);
 		return ret;
@@ -515,14 +561,105 @@ void lp55xx_unregister_sysfs(struct lp55xx_chip *chip)
 }
 EXPORT_SYMBOL_GPL(lp55xx_unregister_sysfs);
 
+static int lp55xx_parse_common_child(struct device_node *np,
+				     struct lp55xx_led_config *cfg,
+				     int led_number, int *chan_nr)
+{
+	int ret;
+
+	of_property_read_string(np, "chan-name",
+				&cfg[led_number].name);
+	of_property_read_u8(np, "led-cur",
+			    &cfg[led_number].led_current);
+	of_property_read_u8(np, "max-cur",
+			    &cfg[led_number].max_current);
+
+	ret = of_property_read_u32(np, "reg", chan_nr);
+	if (ret)
+		return ret;
+
+	if (*chan_nr < 0 || *chan_nr > cfg->max_channel)
+		return -EINVAL;
+
+	return 0;
+}
+
+static int lp55xx_parse_multi_led_child(struct device_node *child,
+					 struct lp55xx_led_config *cfg,
+					 int child_number, int color_number)
+{
+	int chan_nr, color_id, ret;
+
+	ret = lp55xx_parse_common_child(child, cfg, child_number, &chan_nr);
+	if (ret)
+		return ret;
+
+	ret = of_property_read_u32(child, "color", &color_id);
+	if (ret)
+		return ret;
+
+	cfg[child_number].color_id[color_number] = color_id;
+	cfg[child_number].output_num[color_number] = chan_nr;
+
+	return 0;
+}
+
+static int lp55xx_parse_multi_led(struct device_node *np,
+				  struct lp55xx_led_config *cfg,
+				  int child_number)
+{
+	struct device_node *child;
+	int num_colors = 0, ret;
+
+	for_each_child_of_node(np, child) {
+		ret = lp55xx_parse_multi_led_child(child, cfg, child_number,
+						   num_colors);
+		if (ret)
+			return ret;
+		num_colors++;
+	}
+
+	cfg[child_number].num_colors = num_colors;
+
+	return 0;
+}
+
+static int lp55xx_parse_logical_led(struct device_node *np,
+				   struct lp55xx_led_config *cfg,
+				   int child_number)
+{
+	int led_color, ret;
+	int chan_nr = 0;
+
+	cfg[child_number].default_trigger =
+		of_get_property(np, "linux,default-trigger", NULL);
+
+	ret = of_property_read_u32(np, "color", &led_color);
+	if (ret)
+		return ret;
+
+	if (led_color == LED_COLOR_ID_MULTI)
+		return lp55xx_parse_multi_led(np, cfg, child_number);
+
+	ret =  lp55xx_parse_common_child(np, cfg, child_number, &chan_nr);
+	if (ret < 0)
+		return ret;
+
+	cfg[child_number].chan_nr = chan_nr;
+
+	return ret;
+}
+
 struct lp55xx_platform_data *lp55xx_of_populate_pdata(struct device *dev,
-						      struct device_node *np)
+						      struct device_node *np,
+						      struct lp55xx_chip *chip)
 {
 	struct device_node *child;
 	struct lp55xx_platform_data *pdata;
 	struct lp55xx_led_config *cfg;
 	int num_channels;
 	int i = 0;
+	int ret;
 
 	pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
 	if (!pdata)
@@ -540,16 +677,12 @@ struct lp55xx_platform_data *lp55xx_of_populate_pdata(struct device *dev,
 
 	pdata->led_config = &cfg[0];
 	pdata->num_channels = num_channels;
+	cfg->max_channel = chip->cfg->max_channel;
 
 	for_each_child_of_node(np, child) {
-		cfg[i].chan_nr = i;
-
-		of_property_read_string(child, "chan-name", &cfg[i].name);
-		of_property_read_u8(child, "led-cur", &cfg[i].led_current);
-		of_property_read_u8(child, "max-cur", &cfg[i].max_current);
-		cfg[i].default_trigger =
-			of_get_property(child, "linux,default-trigger", NULL);
-
+		ret = lp55xx_parse_logical_led(child, cfg, i);
+		if (ret)
+			return ERR_PTR(-EINVAL);
 		i++;
 	}
 
diff --git a/drivers/leds/leds-lp55xx-common.h b/drivers/leds/leds-lp55xx-common.h
index b9b1041e8143..2f38c5b33830 100644
--- a/drivers/leds/leds-lp55xx-common.h
+++ b/drivers/leds/leds-lp55xx-common.h
@@ -12,6 +12,8 @@
 #ifndef _LEDS_LP55XX_COMMON_H
 #define _LEDS_LP55XX_COMMON_H
 
+#include <linux/led-class-multicolor.h>
+
 enum lp55xx_engine_index {
 	LP55XX_ENGINE_INVALID,
 	LP55XX_ENGINE_1,
@@ -93,6 +95,7 @@ struct lp55xx_reg {
  * @max_channel        : Maximum number of channels
  * @post_init_device   : Chip specific initialization code
  * @brightness_fn      : Brightness function
+ * @multicolor_brightness_fn : Multicolor brightness function
  * @set_led_current    : LED current set function
  * @firmware_cb        : Call function when the firmware is loaded
  * @run_engine         : Run internal engine for pattern
@@ -106,9 +109,12 @@ struct lp55xx_device_config {
 	/* define if the device has specific initialization process */
 	int (*post_init_device) (struct lp55xx_chip *chip);
 
-	/* access brightness register */
+	/* set LED brightness */
 	int (*brightness_fn)(struct lp55xx_led *led);
 
+	/* set multicolor LED brightness */
+	int (*multicolor_brightness_fn)(struct lp55xx_led *led);
+
 	/* current setting function */
 	void (*set_led_current) (struct lp55xx_led *led, u8 led_current);
 
@@ -159,6 +165,8 @@ struct lp55xx_chip {
  * struct lp55xx_led
  * @chan_nr         : Channel number
  * @cdev            : LED class device
+ * @mc_cdev         : Multi color class device
+ * @color_components: Multi color LED map information
  * @led_current     : Current setting at each led channel
  * @max_current     : Maximun current at each led channel
  * @brightness      : Brightness value
@@ -167,6 +175,7 @@ struct lp55xx_chip {
 struct lp55xx_led {
 	int chan_nr;
 	struct led_classdev cdev;
+	struct led_classdev_mc mc_cdev;
 	u8 led_current;
 	u8 max_current;
 	u8 brightness;
@@ -196,6 +205,7 @@ extern void lp55xx_unregister_sysfs(struct lp55xx_chip *chip);
 
 /* common device tree population function */
 extern struct lp55xx_platform_data
-*lp55xx_of_populate_pdata(struct device *dev, struct device_node *np);
+*lp55xx_of_populate_pdata(struct device *dev, struct device_node *np,
+			  struct lp55xx_chip *chip);
 
 #endif /* _LEDS_LP55XX_COMMON_H */
diff --git a/drivers/leds/leds-lp8501.c b/drivers/leds/leds-lp8501.c
index a58019cdb8c3..ac2c31db4a65 100644
--- a/drivers/leds/leds-lp8501.c
+++ b/drivers/leds/leds-lp8501.c
@@ -308,9 +308,16 @@ static int lp8501_probe(struct i2c_client *client,
 	struct lp55xx_platform_data *pdata = dev_get_platdata(&client->dev);
 	struct device_node *np = client->dev.of_node;
 
+	chip = devm_kzalloc(&client->dev, sizeof(*chip), GFP_KERNEL);
+	if (!chip)
+		return -ENOMEM;
+
+	chip->cfg = &lp8501_cfg;
+
 	if (!pdata) {
 		if (np) {
-			pdata = lp55xx_of_populate_pdata(&client->dev, np);
+			pdata = lp55xx_of_populate_pdata(&client->dev, np,
+							 chip);
 			if (IS_ERR(pdata))
 				return PTR_ERR(pdata);
 		} else {
@@ -319,10 +326,6 @@ static int lp8501_probe(struct i2c_client *client,
 		}
 	}
 
-	chip = devm_kzalloc(&client->dev, sizeof(*chip), GFP_KERNEL);
-	if (!chip)
-		return -ENOMEM;
-
 	led = devm_kcalloc(&client->dev,
 			pdata->num_channels, sizeof(*led), GFP_KERNEL);
 	if (!led)
@@ -330,7 +333,6 @@ static int lp8501_probe(struct i2c_client *client,
 
 	chip->cl = client;
 	chip->pdata = pdata;
-	chip->cfg = &lp8501_cfg;
 
 	mutex_init(&chip->lock);
 
diff --git a/include/linux/platform_data/leds-lp55xx.h b/include/linux/platform_data/leds-lp55xx.h
index 00492d6ff018..3441064713a3 100644
--- a/include/linux/platform_data/leds-lp55xx.h
+++ b/include/linux/platform_data/leds-lp55xx.h
@@ -13,18 +13,25 @@
 #define _LEDS_LP55XX_H
 
 #include <linux/gpio/consumer.h>
+#include <linux/led-class-multicolor.h>
 
 /* Clock configuration */
 #define LP55XX_CLOCK_AUTO	0
 #define LP55XX_CLOCK_INT	1
 #define LP55XX_CLOCK_EXT	2
 
+#define LP55XX_MAX_GROUPED_CHAN	4
+
 struct lp55xx_led_config {
 	const char *name;
 	const char *default_trigger;
 	u8 chan_nr;
 	u8 led_current; /* mA x10, 0 if led is not connected */
 	u8 max_current;
+	int num_colors;
+	unsigned int max_channel;
+	int color_id[LED_COLOR_ID_MAX];
+	int output_num[LED_COLOR_ID_MAX];
 };
 
 struct lp55xx_predef_pattern {
-- 
2.27.0


^ permalink raw reply	[flat|nested] 27+ messages in thread

* [PATCH v30 11/16] ARM: defconfig: u8500: Add LP55XX_COMMON config flag
  2020-07-13 15:45 [PATCH v30 00/16] Multicolor Framework v30 Dan Murphy
                   ` (9 preceding siblings ...)
  2020-07-13 15:45 ` [PATCH v30 10/16] leds: lp55xx: Add multicolor framework support to lp55xx Dan Murphy
@ 2020-07-13 15:45 ` Dan Murphy
  2020-07-13 15:45 ` [PATCH v30 12/16] leds: lp5523: Update the lp5523 code to add multicolor brightness function Dan Murphy
                   ` (4 subsequent siblings)
  15 siblings, 0 replies; 27+ messages in thread
From: Dan Murphy @ 2020-07-13 15:45 UTC (permalink / raw)
  To: jacek.anaszewski, pavel, robh, marek.behun
  Cc: devicetree, linux-leds, linux-kernel, linux-arm-kernel, Dan Murphy

The dependencies for the LP55XX LED drivers have been updated so that
the child devices (i.e. LP5521) now depends on the LP55XX_COMMON config
flag as opposed to the device selecting the LP55XX_COMMON flag.  The
LP55XX_COMMON needs to be set in the defconfig.

Signed-off-by: Dan Murphy <dmurphy@ti.com>
---
 arch/arm/configs/u8500_defconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/configs/u8500_defconfig b/arch/arm/configs/u8500_defconfig
index 28dd7cf56048..dea599e1c17e 100644
--- a/arch/arm/configs/u8500_defconfig
+++ b/arch/arm/configs/u8500_defconfig
@@ -113,6 +113,7 @@ CONFIG_NEW_LEDS=y
 CONFIG_LEDS_CLASS=y
 CONFIG_LEDS_LM3530=y
 CONFIG_LEDS_GPIO=y
+CONFIG_LEDS_LP55XX_COMMON=y
 CONFIG_LEDS_LP5521=y
 CONFIG_LEDS_TRIGGER_HEARTBEAT=y
 CONFIG_RTC_CLASS=y
-- 
2.27.0


^ permalink raw reply	[flat|nested] 27+ messages in thread

* [PATCH v30 12/16] leds: lp5523: Update the lp5523 code to add multicolor brightness function
  2020-07-13 15:45 [PATCH v30 00/16] Multicolor Framework v30 Dan Murphy
                   ` (10 preceding siblings ...)
  2020-07-13 15:45 ` [PATCH v30 11/16] ARM: defconfig: u8500: Add LP55XX_COMMON config flag Dan Murphy
@ 2020-07-13 15:45 ` Dan Murphy
  2020-07-13 15:45 ` [PATCH v30 13/16] leds: lp5521: Add multicolor framework multicolor brightness support Dan Murphy
                   ` (3 subsequent siblings)
  15 siblings, 0 replies; 27+ messages in thread
From: Dan Murphy @ 2020-07-13 15:45 UTC (permalink / raw)
  To: jacek.anaszewski, pavel, robh, marek.behun
  Cc: devicetree, linux-leds, linux-kernel, linux-arm-kernel, Dan Murphy

Add the multicolor brightness call back to support the multicolor
framework. This call back allows setting brightness on grouped channels
in a single function.

Acked-by: Pavel Machek <pavel@ucw.cz>
Acked-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
Signed-off-by: Dan Murphy <dmurphy@ti.com>
---
 drivers/leds/leds-lp5523.c | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/drivers/leds/leds-lp5523.c b/drivers/leds/leds-lp5523.c
index bb97549007d7..f55d97258d5e 100644
--- a/drivers/leds/leds-lp5523.c
+++ b/drivers/leds/leds-lp5523.c
@@ -792,6 +792,25 @@ static ssize_t store_master_fader_leds(struct device *dev,
 	return ret;
 }
 
+static int lp5523_multicolor_brightness(struct lp55xx_led *led)
+{
+	struct lp55xx_chip *chip = led->chip;
+	int ret;
+	int i;
+
+	mutex_lock(&chip->lock);
+	for (i = 0; i < led->mc_cdev.num_colors; i++) {
+		ret = lp55xx_write(chip,
+				   LP5523_REG_LED_PWM_BASE +
+				   led->mc_cdev.subled_info[i].channel,
+				   led->mc_cdev.subled_info[i].brightness);
+		if (ret)
+			break;
+	}
+	mutex_unlock(&chip->lock);
+	return ret;
+}
+
 static int lp5523_led_brightness(struct lp55xx_led *led)
 {
 	struct lp55xx_chip *chip = led->chip;
@@ -858,6 +877,7 @@ static struct lp55xx_device_config lp5523_cfg = {
 	.max_channel  = LP5523_MAX_LEDS,
 	.post_init_device   = lp5523_post_init_device,
 	.brightness_fn      = lp5523_led_brightness,
+	.multicolor_brightness_fn = lp5523_multicolor_brightness,
 	.set_led_current    = lp5523_set_led_current,
 	.firmware_cb        = lp5523_firmware_loaded,
 	.run_engine         = lp5523_run_engine,
-- 
2.27.0


^ permalink raw reply	[flat|nested] 27+ messages in thread

* [PATCH v30 13/16] leds: lp5521: Add multicolor framework multicolor brightness support
  2020-07-13 15:45 [PATCH v30 00/16] Multicolor Framework v30 Dan Murphy
                   ` (11 preceding siblings ...)
  2020-07-13 15:45 ` [PATCH v30 12/16] leds: lp5523: Update the lp5523 code to add multicolor brightness function Dan Murphy
@ 2020-07-13 15:45 ` Dan Murphy
  2020-07-13 15:45 ` [PATCH v30 14/16] ARM: dts: n900: Add reg property to the LP5523 channel node Dan Murphy
                   ` (2 subsequent siblings)
  15 siblings, 0 replies; 27+ messages in thread
From: Dan Murphy @ 2020-07-13 15:45 UTC (permalink / raw)
  To: jacek.anaszewski, pavel, robh, marek.behun
  Cc: devicetree, linux-leds, linux-kernel, linux-arm-kernel, Dan Murphy

Add the multicolor brightness call back to support the multicolor
framework. This function allows setting the brightness across
grouped LED channels in a single call.

Acked-by: Pavel Machek <pavel@ucw.cz>
Acked-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
Signed-off-by: Dan Murphy <dmurphy@ti.com>
---
 drivers/leds/leds-lp5521.c | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/drivers/leds/leds-lp5521.c b/drivers/leds/leds-lp5521.c
index 6ff81d6be789..ef8c3bfa8f3c 100644
--- a/drivers/leds/leds-lp5521.c
+++ b/drivers/leds/leds-lp5521.c
@@ -349,6 +349,25 @@ static int lp5521_run_selftest(struct lp55xx_chip *chip, char *buf)
 	return 0;
 }
 
+static int lp5521_multicolor_brightness(struct lp55xx_led *led)
+{
+	struct lp55xx_chip *chip = led->chip;
+	int ret;
+	int i;
+
+	mutex_lock(&chip->lock);
+	for (i = 0; i < led->mc_cdev.num_colors; i++) {
+		ret = lp55xx_write(chip,
+				   LP5521_REG_LED_PWM_BASE +
+				   led->mc_cdev.subled_info[i].channel,
+				   led->mc_cdev.subled_info[i].brightness);
+		if (ret)
+			break;
+	}
+	mutex_unlock(&chip->lock);
+	return ret;
+}
+
 static int lp5521_led_brightness(struct lp55xx_led *led)
 {
 	struct lp55xx_chip *chip = led->chip;
@@ -490,6 +509,7 @@ static struct lp55xx_device_config lp5521_cfg = {
 	.max_channel  = LP5521_MAX_LEDS,
 	.post_init_device   = lp5521_post_init_device,
 	.brightness_fn      = lp5521_led_brightness,
+	.multicolor_brightness_fn = lp5521_multicolor_brightness,
 	.set_led_current    = lp5521_set_led_current,
 	.firmware_cb        = lp5521_firmware_loaded,
 	.run_engine         = lp5521_run_engine,
-- 
2.27.0


^ permalink raw reply	[flat|nested] 27+ messages in thread

* [PATCH v30 14/16] ARM: dts: n900: Add reg property to the LP5523 channel node
  2020-07-13 15:45 [PATCH v30 00/16] Multicolor Framework v30 Dan Murphy
                   ` (12 preceding siblings ...)
  2020-07-13 15:45 ` [PATCH v30 13/16] leds: lp5521: Add multicolor framework multicolor brightness support Dan Murphy
@ 2020-07-13 15:45 ` Dan Murphy
  2020-07-13 15:45 ` [PATCH v30 15/16] ARM: dts: imx6dl-yapp4: Add reg property to the lp5562 " Dan Murphy
  2020-07-13 15:45 ` [PATCH v30 16/16] ARM: dts: ste-href: Add reg property to the LP5521 channel nodes Dan Murphy
  15 siblings, 0 replies; 27+ messages in thread
From: Dan Murphy @ 2020-07-13 15:45 UTC (permalink / raw)
  To: jacek.anaszewski, pavel, robh, marek.behun
  Cc: devicetree, linux-leds, linux-kernel, linux-arm-kernel,
	Dan Murphy, Tony Lindgren, Benoît Cousson

Add the reg property to each channel node.  This update is
to accommodate the multicolor framework.  In addition to the
accommodation this allows the LEDs to be placed on any channel
and allow designs to skip channels as opposed to requiring
sequential order.

Signed-off-by: Dan Murphy <dmurphy@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
CC: Tony Lindgren <tony@atomide.com>
CC: "Benoît Cousson" <bcousson@baylibre.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
---
 arch/arm/boot/dts/omap3-n900.dts | 29 ++++++++++++++++++++---------
 1 file changed, 20 insertions(+), 9 deletions(-)

diff --git a/arch/arm/boot/dts/omap3-n900.dts b/arch/arm/boot/dts/omap3-n900.dts
index 4089d97405c9..ebe93b06b4f7 100644
--- a/arch/arm/boot/dts/omap3-n900.dts
+++ b/arch/arm/boot/dts/omap3-n900.dts
@@ -618,63 +618,74 @@ indicator {
 	};
 
 	lp5523: lp5523@32 {
+		#address-cells = <1>;
+		#size-cells = <0>;
 		compatible = "national,lp5523";
 		reg = <0x32>;
 		clock-mode = /bits/ 8 <0>; /* LP55XX_CLOCK_AUTO */
 		enable-gpio = <&gpio2 9 GPIO_ACTIVE_HIGH>; /* 41 */
 
-		chan0 {
+		chan@0 {
 			chan-name = "lp5523:kb1";
 			led-cur = /bits/ 8 <50>;
 			max-cur = /bits/ 8 <100>;
+			reg = <0>;
 		};
 
-		chan1 {
+		chan@1 {
 			chan-name = "lp5523:kb2";
 			led-cur = /bits/ 8 <50>;
 			max-cur = /bits/ 8 <100>;
+			reg = <1>;
 		};
 
-		chan2 {
+		chan@2 {
 			chan-name = "lp5523:kb3";
 			led-cur = /bits/ 8 <50>;
 			max-cur = /bits/ 8 <100>;
+			reg = <2>;
 		};
 
-		chan3 {
+		chan@3 {
 			chan-name = "lp5523:kb4";
 			led-cur = /bits/ 8 <50>;
 			max-cur = /bits/ 8 <100>;
+			reg = <3>;
 		};
 
-		chan4 {
+		chan@4 {
 			chan-name = "lp5523:b";
 			led-cur = /bits/ 8 <50>;
 			max-cur = /bits/ 8 <100>;
+			reg = <4>;
 		};
 
-		chan5 {
+		chan@5 {
 			chan-name = "lp5523:g";
 			led-cur = /bits/ 8 <50>;
 			max-cur = /bits/ 8 <100>;
+			reg = <5>;
 		};
 
-		chan6 {
+		chan@6 {
 			chan-name = "lp5523:r";
 			led-cur = /bits/ 8 <50>;
 			max-cur = /bits/ 8 <100>;
+			reg = <6>;
 		};
 
-		chan7 {
+		chan@7 {
 			chan-name = "lp5523:kb5";
 			led-cur = /bits/ 8 <50>;
 			max-cur = /bits/ 8 <100>;
+			reg = <7>;
 		};
 
-		chan8 {
+		chan@8 {
 			chan-name = "lp5523:kb6";
 			led-cur = /bits/ 8 <50>;
 			max-cur = /bits/ 8 <100>;
+			reg = <8>;
 		};
 	};
 
-- 
2.27.0


^ permalink raw reply	[flat|nested] 27+ messages in thread

* [PATCH v30 15/16] ARM: dts: imx6dl-yapp4: Add reg property to the lp5562 channel node
  2020-07-13 15:45 [PATCH v30 00/16] Multicolor Framework v30 Dan Murphy
                   ` (13 preceding siblings ...)
  2020-07-13 15:45 ` [PATCH v30 14/16] ARM: dts: n900: Add reg property to the LP5523 channel node Dan Murphy
@ 2020-07-13 15:45 ` Dan Murphy
  2020-07-13 15:45 ` [PATCH v30 16/16] ARM: dts: ste-href: Add reg property to the LP5521 channel nodes Dan Murphy
  15 siblings, 0 replies; 27+ messages in thread
From: Dan Murphy @ 2020-07-13 15:45 UTC (permalink / raw)
  To: jacek.anaszewski, pavel, robh, marek.behun
  Cc: devicetree, linux-leds, linux-kernel, linux-arm-kernel,
	Dan Murphy, Shawn Guo, Sascha Hauer, Pengutronix Kernel Team,
	Fabio Estevam, NXP Linux Team

Add the reg property to each channel node.  This update is
to accommodate the multicolor framework.  In addition to the
accommodation this allows the LEDs to be placed on any channel
and allow designs to skip channels as opposed to requiring
sequential order.

Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Dan Murphy <dmurphy@ti.com>
CC: Shawn Guo <shawnguo@kernel.org>
CC: Sascha Hauer <s.hauer@pengutronix.de>
CC: Pengutronix Kernel Team <kernel@pengutronix.de>
CC: Fabio Estevam <festevam@gmail.com>
CC: NXP Linux Team <linux-imx@nxp.com>
---
 arch/arm/boot/dts/imx6dl-yapp4-common.dtsi | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

diff --git a/arch/arm/boot/dts/imx6dl-yapp4-common.dtsi b/arch/arm/boot/dts/imx6dl-yapp4-common.dtsi
index 2b9423d55c37..77aa90640052 100644
--- a/arch/arm/boot/dts/imx6dl-yapp4-common.dtsi
+++ b/arch/arm/boot/dts/imx6dl-yapp4-common.dtsi
@@ -258,29 +258,35 @@ leds: led-controller@30 {
 		reg = <0x30>;
 		clock-mode = /bits/ 8 <1>;
 		status = "disabled";
+		#address-cells = <1>;
+		#size-cells = <0>;
 
-		chan0 {
+		chan@0 {
 			chan-name = "R";
 			led-cur = /bits/ 8 <0x20>;
 			max-cur = /bits/ 8 <0x60>;
+			reg = <0>;
 		};
 
-		chan1 {
+		chan@1 {
 			chan-name = "G";
 			led-cur = /bits/ 8 <0x20>;
 			max-cur = /bits/ 8 <0x60>;
+			reg = <1>;
 		};
 
-		chan2 {
+		chan@2 {
 			chan-name = "B";
 			led-cur = /bits/ 8 <0x20>;
 			max-cur = /bits/ 8 <0x60>;
+			reg = <2>;
 		};
 
-		chan3 {
+		chan@3 {
 			chan-name = "W";
 			led-cur = /bits/ 8 <0x0>;
 			max-cur = /bits/ 8 <0x0>;
+			reg = <3>;
 		};
 	};
 
-- 
2.27.0


^ permalink raw reply	[flat|nested] 27+ messages in thread

* [PATCH v30 16/16] ARM: dts: ste-href: Add reg property to the LP5521 channel nodes
  2020-07-13 15:45 [PATCH v30 00/16] Multicolor Framework v30 Dan Murphy
                   ` (14 preceding siblings ...)
  2020-07-13 15:45 ` [PATCH v30 15/16] ARM: dts: imx6dl-yapp4: Add reg property to the lp5562 " Dan Murphy
@ 2020-07-13 15:45 ` Dan Murphy
  15 siblings, 0 replies; 27+ messages in thread
From: Dan Murphy @ 2020-07-13 15:45 UTC (permalink / raw)
  To: jacek.anaszewski, pavel, robh, marek.behun
  Cc: devicetree, linux-leds, linux-kernel, linux-arm-kernel,
	Dan Murphy, Linus Walleij

Add the reg property to each channel node.  This update is
to accommodate the multicolor framework.  In addition to the
accommodation this allows the LEDs to be placed on any channel
and allow designs to skip channels as opposed to requiring
sequential order.

Signed-off-by: Dan Murphy <dmurphy@ti.com>
CC: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Pavel Machek <pavel@ucw.cz>
---
 arch/arm/boot/dts/ste-href.dtsi | 22 ++++++++++++++++------
 1 file changed, 16 insertions(+), 6 deletions(-)

diff --git a/arch/arm/boot/dts/ste-href.dtsi b/arch/arm/boot/dts/ste-href.dtsi
index 33e3b0b3c53d..ff47cbf6ed3b 100644
--- a/arch/arm/boot/dts/ste-href.dtsi
+++ b/arch/arm/boot/dts/ste-href.dtsi
@@ -58,16 +58,21 @@ lp5521@33 {
 				reg = <0x33>;
 				label = "lp5521_pri";
 				clock-mode = /bits/ 8 <2>;
-				chan0 {
+				#address-cells = <1>;
+				#size-cells = <0>;
+				chan@0 {
+					reg = <0>;
 					led-cur = /bits/ 8 <0x2f>;
 					max-cur = /bits/ 8 <0x5f>;
 					linux,default-trigger = "heartbeat";
 				};
-				chan1 {
+				chan@1 {
+					reg = <1>;
 					led-cur = /bits/ 8 <0x2f>;
 					max-cur = /bits/ 8 <0x5f>;
 				};
-				chan2 {
+				chan@2 {
+					reg = <2>;
 					led-cur = /bits/ 8 <0x2f>;
 					max-cur = /bits/ 8 <0x5f>;
 				};
@@ -77,15 +82,20 @@ lp5521@34 {
 				reg = <0x34>;
 				label = "lp5521_sec";
 				clock-mode = /bits/ 8 <2>;
-				chan0 {
+				#address-cells = <1>;
+				#size-cells = <0>;
+				chan@0 {
+					reg = <0>;
 					led-cur = /bits/ 8 <0x2f>;
 					max-cur = /bits/ 8 <0x5f>;
 				};
-				chan1 {
+				chan@1 {
+					reg = <1>;
 					led-cur = /bits/ 8 <0x2f>;
 					max-cur = /bits/ 8 <0x5f>;
 				};
-				chan2 {
+				chan@2 {
+					reg = <2>;
 					led-cur = /bits/ 8 <0x2f>;
 					max-cur = /bits/ 8 <0x5f>;
 				};
-- 
2.27.0


^ permalink raw reply	[flat|nested] 27+ messages in thread

* Re: [PATCH v30 01/16] leds: lp55xx: Fix file permissions to use DEVICE_ATTR macros
  2020-07-13 15:45 ` [PATCH v30 01/16] leds: lp55xx: Fix file permissions to use DEVICE_ATTR macros Dan Murphy
@ 2020-07-15 13:19   ` Marek Behún
  0 siblings, 0 replies; 27+ messages in thread
From: Marek Behún @ 2020-07-15 13:19 UTC (permalink / raw)
  To: Dan Murphy
  Cc: jacek.anaszewski, pavel, robh, devicetree, linux-leds,
	linux-kernel, linux-arm-kernel

On Mon, 13 Jul 2020 10:45:29 -0500
Dan Murphy <dmurphy@ti.com> wrote:

> Fix the checkpatch warnings for the use of the file permission macros.
> In converting the file permissions to the DEVICE_ATTR_XX macros the
> call back function names needed to be updated within the code.
> 
> This means that the lp55xx_ needed to be dropped in the name to keep
> in harmony with the ABI documentation.
> 
> Acked-by: Pavel Machek <pavel@ucw.cz>
> Acked-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
> Signed-off-by: Dan Murphy <dmurphy@ti.com>
> ---
>  drivers/leds/leds-lp55xx-common.c | 22 ++++++++++------------
>  1 file changed, 10 insertions(+), 12 deletions(-)
> 

Reviewed-by: Marek Behún <marek.behun@nic.cz>

^ permalink raw reply	[flat|nested] 27+ messages in thread

* Re: [PATCH v30 02/16] leds: lp5523: Fix various formatting issues in the code
  2020-07-13 15:45 ` [PATCH v30 02/16] leds: lp5523: Fix various formatting issues in the code Dan Murphy
@ 2020-07-15 13:20   ` Marek Behún
  0 siblings, 0 replies; 27+ messages in thread
From: Marek Behún @ 2020-07-15 13:20 UTC (permalink / raw)
  To: Dan Murphy
  Cc: jacek.anaszewski, pavel, robh, devicetree, linux-leds,
	linux-kernel, linux-arm-kernel

On Mon, 13 Jul 2020 10:45:30 -0500
Dan Murphy <dmurphy@ti.com> wrote:

> Fix checkpatch errors and warnings for the LP5523.c device
> driver.
> 
> Acked-by: Pavel Machek <pavel@ucw.cz>
> Acked-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
> Signed-off-by: Dan Murphy <dmurphy@ti.com>
> ---
>  drivers/leds/leds-lp5523.c | 19 ++++++++++---------
>  1 file changed, 10 insertions(+), 9 deletions(-) 

Reviewed-by: Marek Behún <marek.behun@nic.cz>

^ permalink raw reply	[flat|nested] 27+ messages in thread

* Re: [PATCH v30 03/16] dt: bindings: Add multicolor class dt bindings documention
  2020-07-13 15:45 ` [PATCH v30 03/16] dt: bindings: Add multicolor class dt bindings documention Dan Murphy
@ 2020-07-15 13:20   ` Marek Behún
  0 siblings, 0 replies; 27+ messages in thread
From: Marek Behún @ 2020-07-15 13:20 UTC (permalink / raw)
  To: Dan Murphy
  Cc: jacek.anaszewski, pavel, robh, devicetree, linux-leds,
	linux-kernel, linux-arm-kernel

On Mon, 13 Jul 2020 10:45:31 -0500
Dan Murphy <dmurphy@ti.com> wrote:

> Add DT bindings for the LEDs multicolor class framework.
> Add multicolor ID to the color ID list for device tree bindings.
> 
> CC: Rob Herring <robh@kernel.org>
> Reviewed-by: Rob Herring <robh@kernel.org>
> Acked-by: Pavel Machek <pavel@ucw.cz>
> Acked-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
> Signed-off-by: Dan Murphy <dmurphy@ti.com>
> ---
>  .../bindings/leds/leds-class-multicolor.yaml  | 37
> +++++++++++++++++++ include/dt-bindings/leds/common.h             |
> 3 +- 2 files changed, 39 insertions(+), 1 deletion(-)
>  create mode 100644
> Documentation/devicetree/bindings/leds/leds-class-multicolor.yaml

Reviewed-by: Marek Behún <marek.behun@nic.cz>

^ permalink raw reply	[flat|nested] 27+ messages in thread

* Re: [PATCH v30 04/16] leds: Add multicolor ID to the color ID list
  2020-07-13 15:45 ` [PATCH v30 04/16] leds: Add multicolor ID to the color ID list Dan Murphy
@ 2020-07-15 13:20   ` Marek Behún
  2020-07-15 17:36     ` Pavel Machek
  0 siblings, 1 reply; 27+ messages in thread
From: Marek Behún @ 2020-07-15 13:20 UTC (permalink / raw)
  To: Dan Murphy
  Cc: jacek.anaszewski, pavel, robh, devicetree, linux-leds,
	linux-kernel, linux-arm-kernel

On Mon, 13 Jul 2020 10:45:32 -0500
Dan Murphy <dmurphy@ti.com> wrote:

> Add a new color ID that is declared as MULTICOLOR as with the
> multicolor framework declaring a definitive color is not accurate
> as the node can contain multiple colors.
> 
> Signed-off-by: Dan Murphy <dmurphy@ti.com>
> ---
>  drivers/leds/led-core.c | 1 +
>  1 file changed, 1 insertion(+)

Reviewed-by: Marek Behún <marek.behun@nic.cz>

^ permalink raw reply	[flat|nested] 27+ messages in thread

* Re: [PATCH v30 05/16] leds: multicolor: Introduce a multicolor class definition
  2020-07-13 15:45 ` [PATCH v30 05/16] leds: multicolor: Introduce a multicolor class definition Dan Murphy
@ 2020-07-15 13:21   ` Marek Behún
  2020-07-16  8:31   ` Pavel Machek
  1 sibling, 0 replies; 27+ messages in thread
From: Marek Behún @ 2020-07-15 13:21 UTC (permalink / raw)
  To: Dan Murphy
  Cc: jacek.anaszewski, pavel, robh, devicetree, linux-leds,
	linux-kernel, linux-arm-kernel

On Mon, 13 Jul 2020 10:45:33 -0500
Dan Murphy <dmurphy@ti.com> wrote:

> Introduce a multicolor class that groups colored LEDs
> within a LED node.
> 
> The multi color class groups monochrome LEDs and allows controlling
> two aspects of the final combined color: hue and lightness. The
> former is controlled via the intensity file and the latter is
> controlled via brightness file.
> 
> Acked-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
> Signed-off-by: Dan Murphy <dmurphy@ti.com>
> ---
>  .../ABI/testing/sysfs-class-led-multicolor    |  35 +++
>  Documentation/leds/index.rst                  |   1 +
>  Documentation/leds/leds-class-multicolor.rst  |  86 ++++++++
>  drivers/leds/Kconfig                          |  10 +
>  drivers/leds/Makefile                         |   1 +
>  drivers/leds/led-class-multicolor.c           | 204
> ++++++++++++++++++ include/linux/led-class-multicolor.h          |
> 121 +++++++++++ 7 files changed, 458 insertions(+)
>  create mode 100644
> Documentation/ABI/testing/sysfs-class-led-multicolor create mode
> 100644 Documentation/leds/leds-class-multicolor.rst create mode
> 100644 drivers/leds/led-class-multicolor.c create mode 100644
> include/linux/led-class-multicolor.h

Reviewed-by: Marek Behún <marek.behun@nic.cz>

^ permalink raw reply	[flat|nested] 27+ messages in thread

* Re: [PATCH v30 04/16] leds: Add multicolor ID to the color ID list
  2020-07-15 13:20   ` Marek Behún
@ 2020-07-15 17:36     ` Pavel Machek
  2020-07-15 17:59       ` Marek Behún
  0 siblings, 1 reply; 27+ messages in thread
From: Pavel Machek @ 2020-07-15 17:36 UTC (permalink / raw)
  To: Marek Behún
  Cc: Dan Murphy, jacek.anaszewski, robh, devicetree, linux-leds,
	linux-kernel, linux-arm-kernel


[-- Attachment #1: Type: text/plain, Size: 712 bytes --]

On Wed 2020-07-15 15:20:56, Marek Behún wrote:
> On Mon, 13 Jul 2020 10:45:32 -0500
> Dan Murphy <dmurphy@ti.com> wrote:
> 
> > Add a new color ID that is declared as MULTICOLOR as with the
> > multicolor framework declaring a definitive color is not accurate
> > as the node can contain multiple colors.
> > 
> > Signed-off-by: Dan Murphy <dmurphy@ti.com>
> > ---
> >  drivers/leds/led-core.c | 1 +
> >  1 file changed, 1 insertion(+)
> 
> Reviewed-by: Marek Behún <marek.behun@nic.cz>

Thanks for patches, thanks for reviews, 1-4 applied.
									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

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^ permalink raw reply	[flat|nested] 27+ messages in thread

* Re: [PATCH v30 04/16] leds: Add multicolor ID to the color ID list
  2020-07-15 17:36     ` Pavel Machek
@ 2020-07-15 17:59       ` Marek Behún
  0 siblings, 0 replies; 27+ messages in thread
From: Marek Behún @ 2020-07-15 17:59 UTC (permalink / raw)
  To: Pavel Machek
  Cc: Dan Murphy, jacek.anaszewski, robh, devicetree, linux-leds,
	linux-kernel, linux-arm-kernel

On Wed, 15 Jul 2020 19:36:10 +0200
Pavel Machek <pavel@ucw.cz> wrote:

> Thanks for patches, thanks for reviews, 1-4 applied.
> 									Pavel

The most important one is 5th, though :D

^ permalink raw reply	[flat|nested] 27+ messages in thread

* Re: [PATCH v30 05/16] leds: multicolor: Introduce a multicolor class definition
  2020-07-13 15:45 ` [PATCH v30 05/16] leds: multicolor: Introduce a multicolor class definition Dan Murphy
  2020-07-15 13:21   ` Marek Behún
@ 2020-07-16  8:31   ` Pavel Machek
  2020-07-16 15:03     ` Dan Murphy
  1 sibling, 1 reply; 27+ messages in thread
From: Pavel Machek @ 2020-07-16  8:31 UTC (permalink / raw)
  To: Dan Murphy
  Cc: jacek.anaszewski, robh, marek.behun, devicetree, linux-leds,
	linux-kernel, linux-arm-kernel


[-- Attachment #1: Type: text/plain, Size: 1875 bytes --]

Hi!

First, let's substitute multi.color -> multicolor globally,
LEDS_CLASS_MULTI_COLOR is most visible example of this. Please also
decide whether it is MultiColor or multicolor, and make it consistent.

> Introduce a multicolor class that groups colored LEDs
> within a LED node.
> 
> The multi color class groups monochrome LEDs and allows controlling two

For example here. Plus, the LEDs are not neccessarily monochrome, we
support white LEDs, too. Let's use "simple LEDs"?

> aspects of the final combined color: hue and lightness. The former is
> controlled via the intensity file and the latter is controlled
> via brightness file.

> +	depends on LEDS_CLASS
> +	help
> +	  This option enables the multicolor LED sysfs class in /sys/class/leds.
> +	  It wraps LED class and adds multicolor LED specific sysfs attributes
> +	  and kernel internal API to it. You'll need this to provide support
> +	  for multicolor LEDs that are grouped together. This class is not
> +	  intended for single color LEDs. It can be built as a module.

"single color" -> "simple"?

> +	/* account for the new line at the end of the buffer */
> +	offset++;
> +	if (offset < size) {
> +		ret = -EINVAL;
> +		goto err_out;
> +	}

"new line" -> "newline", and actually check that character you are
skipping is newline. Someone could put '%' in there...

> +		if (i < mcled_cdev->num_colors - 1)
> +			len += sprintf(buf + len, " ");
> +	len += sprintf(buf + len, "\n");

Using sprintf for single character has... quite a lot of
overhead. Something like buf[len++] = '\n' would be
simpler/shorter/better. Please fix all relevant places.

Note I already applied patches 1-4.

Best regards,
									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

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^ permalink raw reply	[flat|nested] 27+ messages in thread

* Re: [PATCH v30 05/16] leds: multicolor: Introduce a multicolor class definition
  2020-07-16  8:31   ` Pavel Machek
@ 2020-07-16 15:03     ` Dan Murphy
  2020-07-16 15:06       ` Dan Murphy
  0 siblings, 1 reply; 27+ messages in thread
From: Dan Murphy @ 2020-07-16 15:03 UTC (permalink / raw)
  To: Pavel Machek
  Cc: jacek.anaszewski, robh, marek.behun, devicetree, linux-leds,
	linux-kernel, linux-arm-kernel

Pavel

On 7/16/20 3:31 AM, Pavel Machek wrote:
> Hi!
>
> First, let's substitute multi.color -> multicolor globally,
> LEDS_CLASS_MULTI_COLOR is most visible example of this. Please also
> decide whether it is MultiColor or multicolor, and make it consistent.

Dictionary definition is multicolor no space.  Capitalization is 
dependent on how it is use.

Basically no capital in the middle of a sentence

>> Introduce a multicolor class that groups colored LEDs
>> within a LED node.
>>
>> The multi color class groups monochrome LEDs and allows controlling two
> For example here. Plus, the LEDs are not neccessarily monochrome, we
> support white LEDs, too. Let's use "simple LEDs"?
OK
>
>> aspects of the final combined color: hue and lightness. The former is
>> controlled via the intensity file and the latter is controlled
>> via brightness file.
>> +	depends on LEDS_CLASS
>> +	help
>> +	  This option enables the multicolor LED sysfs class in /sys/class/leds.
>> +	  It wraps LED class and adds multicolor LED specific sysfs attributes
>> +	  and kernel internal API to it. You'll need this to provide support
>> +	  for multicolor LEDs that are grouped together. This class is not
>> +	  intended for single color LEDs. It can be built as a module.
> "single color" -> "simple"?
ok
>
>> +	/* account for the new line at the end of the buffer */
>> +	offset++;
>> +	if (offset < size) {
>> +		ret = -EINVAL;
>> +		goto err_out;
>> +	}
> "new line" -> "newline", and actually check that character you are
> skipping is newline. Someone could put '%' in there...

Actually we don't need to check for the character.  Even if someone put 
the '%' there there will still be a '\n' at the end of the buffer.

The for..loop above only processes the total number of available colors 
so effectively the '%' will be ignored just like the '\n'.

If the buffer contains more entries then the number of colors an error 
will be returned via the check below since size will be greater then offset

     if (offset < size) {
         ret = -EINVAL;
         goto err_out;
     }

Maybe I should remove the comment as it is a bit confusing.

>> +		if (i < mcled_cdev->num_colors - 1)
>> +			len += sprintf(buf + len, " ");
>> +	len += sprintf(buf + len, "\n");
> Using sprintf for single character has... quite a lot of
> overhead. Something like buf[len++] = '\n' would be
> simpler/shorter/better. Please fix all relevant places.

OK


> Note I already applied patches 1-4.

I will rebase on top


> Best regards,
> 									Pavel

^ permalink raw reply	[flat|nested] 27+ messages in thread

* Re: [PATCH v30 05/16] leds: multicolor: Introduce a multicolor class definition
  2020-07-16 15:03     ` Dan Murphy
@ 2020-07-16 15:06       ` Dan Murphy
  0 siblings, 0 replies; 27+ messages in thread
From: Dan Murphy @ 2020-07-16 15:06 UTC (permalink / raw)
  To: Pavel Machek
  Cc: jacek.anaszewski, robh, marek.behun, devicetree, linux-leds,
	linux-kernel, linux-arm-kernel

Pavel

On 7/16/20 10:03 AM, Dan Murphy wrote:
> Pavel
>
> On 7/16/20 3:31 AM, Pavel Machek wrote:
>> Hi!
>>
>> First, let's substitute multi.color -> multicolor globally,
>> LEDS_CLASS_MULTI_COLOR is most visible example of this. Please also
>> decide whether it is MultiColor or multicolor, and make it consistent.
>
> Dictionary definition is multicolor no space.  Capitalization is 
> dependent on how it is use.
>
> Basically no capital in the middle of a sentence
>
>>> Introduce a multicolor class that groups colored LEDs
>>> within a LED node.
>>>
>>> The multi color class groups monochrome LEDs and allows controlling two
>> For example here. Plus, the LEDs are not neccessarily monochrome, we
>> support white LEDs, too. Let's use "simple LEDs"?
> OK
>>
>>> aspects of the final combined color: hue and lightness. The former is
>>> controlled via the intensity file and the latter is controlled
>>> via brightness file.
>>> +    depends on LEDS_CLASS
>>> +    help
>>> +      This option enables the multicolor LED sysfs class in 
>>> /sys/class/leds.
>>> +      It wraps LED class and adds multicolor LED specific sysfs 
>>> attributes
>>> +      and kernel internal API to it. You'll need this to provide 
>>> support
>>> +      for multicolor LEDs that are grouped together. This class is not
>>> +      intended for single color LEDs. It can be built as a module.
>> "single color" -> "simple"?
> ok
>>
>>> +    /* account for the new line at the end of the buffer */
>>> +    offset++;
>>> +    if (offset < size) {
>>> +        ret = -EINVAL;
>>> +        goto err_out;
>>> +    }
>> "new line" -> "newline", and actually check that character you are
>> skipping is newline. Someone could put '%' in there...
>
> Actually we don't need to check for the character.  Even if someone 
> put the '%' there there will still be a '\n' at the end of the buffer.
>
> The for..loop above only processes the total number of available 
> colors so effectively the '%' will be ignored just like the '\n'.
>
> If the buffer contains more entries then the number of colors an error 
> will be returned via the check below since size will be greater then 
> offset
>
>     if (offset < size) {
>         ret = -EINVAL;
>         goto err_out;
>     }
>
> Maybe I should remove the comment as it is a bit confusing.
>
>>> +        if (i < mcled_cdev->num_colors - 1)
>>> +            len += sprintf(buf + len, " ");
>>> +    len += sprintf(buf + len, "\n");
>> Using sprintf for single character has... quite a lot of
>> overhead. Something like buf[len++] = '\n' would be
>> simpler/shorter/better. Please fix all relevant places.
>
> OK
>
>
>> Note I already applied patches 1-4.
>
> I will rebase on top
>
>
One last change my legal team came back and said no to GPL v2+ so I 
reverted that change

Dan


>> Best regards,
>>                                     Pavel

^ permalink raw reply	[flat|nested] 27+ messages in thread

end of thread, back to index

Thread overview: 27+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-07-13 15:45 [PATCH v30 00/16] Multicolor Framework v30 Dan Murphy
2020-07-13 15:45 ` [PATCH v30 01/16] leds: lp55xx: Fix file permissions to use DEVICE_ATTR macros Dan Murphy
2020-07-15 13:19   ` Marek Behún
2020-07-13 15:45 ` [PATCH v30 02/16] leds: lp5523: Fix various formatting issues in the code Dan Murphy
2020-07-15 13:20   ` Marek Behún
2020-07-13 15:45 ` [PATCH v30 03/16] dt: bindings: Add multicolor class dt bindings documention Dan Murphy
2020-07-15 13:20   ` Marek Behún
2020-07-13 15:45 ` [PATCH v30 04/16] leds: Add multicolor ID to the color ID list Dan Murphy
2020-07-15 13:20   ` Marek Behún
2020-07-15 17:36     ` Pavel Machek
2020-07-15 17:59       ` Marek Behún
2020-07-13 15:45 ` [PATCH v30 05/16] leds: multicolor: Introduce a multicolor class definition Dan Murphy
2020-07-15 13:21   ` Marek Behún
2020-07-16  8:31   ` Pavel Machek
2020-07-16 15:03     ` Dan Murphy
2020-07-16 15:06       ` Dan Murphy
2020-07-13 15:45 ` [PATCH v30 06/16] dt: bindings: lp50xx: Introduce the lp50xx family of RGB drivers Dan Murphy
2020-07-13 15:45 ` [PATCH v30 07/16] leds: lp50xx: Add the LP50XX family of the RGB LED driver Dan Murphy
2020-07-13 15:45 ` [PATCH v30 08/16] dt-bindings: leds: Convert leds-lp55xx to yaml Dan Murphy
2020-07-13 15:45 ` [PATCH v30 09/16] leds: lp55xx: Convert LED class registration to devm_* Dan Murphy
2020-07-13 15:45 ` [PATCH v30 10/16] leds: lp55xx: Add multicolor framework support to lp55xx Dan Murphy
2020-07-13 15:45 ` [PATCH v30 11/16] ARM: defconfig: u8500: Add LP55XX_COMMON config flag Dan Murphy
2020-07-13 15:45 ` [PATCH v30 12/16] leds: lp5523: Update the lp5523 code to add multicolor brightness function Dan Murphy
2020-07-13 15:45 ` [PATCH v30 13/16] leds: lp5521: Add multicolor framework multicolor brightness support Dan Murphy
2020-07-13 15:45 ` [PATCH v30 14/16] ARM: dts: n900: Add reg property to the LP5523 channel node Dan Murphy
2020-07-13 15:45 ` [PATCH v30 15/16] ARM: dts: imx6dl-yapp4: Add reg property to the lp5562 " Dan Murphy
2020-07-13 15:45 ` [PATCH v30 16/16] ARM: dts: ste-href: Add reg property to the LP5521 channel nodes Dan Murphy

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