leds: Add IS32FL3207 controller support

The IS32FL3207 is an 18-channel constant-current LED controller with per-output PWM and current scaling.

Describe I2C addressing, power and shutdown controls, RISET, and individual or multicolor output groupings. Require board current limits for each output and document their relationship to the RISET-derived full scale.

Allow dash-suffixed multicolor group names when a group begins at channel 16 or 17, which cannot be represented by the common schema unit-address form.

Signed-off-by Ahmad Byagowi <[email protected]>

---
 .../bindings/leds/issi,is32fl3207.yaml        | 285 ++++++++++++++++++
 MAINTAINERS                                   |   6 +
 2 files changed, 291 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/leds/issi,is32fl3207.yaml

Add an I2C driver for the Lumissil IS32FL3207 18-channel LED controller.

Expose individual and multicolor LEDs through the LED class. Use the default 8-bit, 62 kHz PWM mode, derive output current from RISET, and enforce each output current limit with the scaling registers. Serialize multicolor calculation, scaling, PWM, and controller-wide update operations.

Clear retained scaling while SDB holds the outputs disabled. Release SDB and briefly enable normal operation to issue the required software reset, then keep the controller in software shutdown while registering every LED. Enable outputs only after all limits and initial brightness values are programmed.

Handle an optional supply and enable GPIO. Serialize shutdown against pending brightness updates and honor retained shutdown state.

Signed-off-by Ahmad Byagowi <[email protected]>

---
 MAINTAINERS                        |   1 +
 drivers/leds/rgb/Kconfig           |  11 +
 drivers/leds/rgb/Makefile          |   1 +
 drivers/leds/rgb/leds-is32fl3207.c | 736 +++++++++++++++++++++++++++++
 4 files changed, 749 insertions(+)
 create mode 100644 drivers/leds/rgb/leds-is32fl3207.c

MAINTAINERS +1 -0

index dbb2fc536c06..79bb970b025d 100644
@@ -13822,6 +13822,7 @@ M:	Ahmad Byagowi <[email protected]>
 L:	[email protected]
 S:	Maintained
 F:	Documentation/devicetree/bindings/leds/issi,is32fl3207.yaml
+F:	drivers/leds/rgb/leds-is32fl3207.c
 
 IT87 HARDWARE MONITORING DRIVER
 M:	Jean Delvare <[email protected]>

drivers/leds/rgb/Kconfig' +11 -0

index 6e9ab5f60714..c896be1318dc 100644
@@ -14,6 +14,17 @@ config LEDS_GROUP_MULTICOLOR
 	  To compile this driver as a module, choose M here: the module
 	  will be called leds-group-multicolor.
 
+config LEDS_IS32FL3207
+	tristate "LED support for ISSI IS32FL3207"
+	depends on I2C
+	select REGMAP_I2C
+	help
+	  Say Y here to include support for the Lumissil IS32FL3207
+	  18-channel I2C LED controller.
+
+	  To compile this driver as a module, choose M here: the module will
+	  be called leds-is32fl3207.
+
 config LEDS_KTD202X
 	tristate "LED support for KTD202x Chips"
 	depends on I2C

drivers/leds/rgb/Makefile' +1 -0

index cc0f2df66286..228923e8bb11 100644
@@ -1,6 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0
 
 obj-$(CONFIG_LEDS_GROUP_MULTICOLOR)	+= leds-group-multicolor.o
+obj-$(CONFIG_LEDS_IS32FL3207)		+= leds-is32fl3207.o
 obj-$(CONFIG_LEDS_KTD202X)		+= leds-ktd202x.o
 obj-$(CONFIG_LEDS_LP5812)		+= leds-lp5812.o
 obj-$(CONFIG_LEDS_LP5860_CORE)		+= leds-lp5860-core.o

drivers/leds/rgb/leds-is32fl3207.c' new file +33 -0

new file mode 100644
index 000000000000..6a46f97ba50a
@@ -0,0 +1,736 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * ISSI IS32FL3207 LED controller driver
+ *
+ * Copyright 2026 Ahmad Byagowi
+ */
+
+#include <linux/bitmap.h>
+#include <linux/delay.h>
+#include <linux/gpio/consumer.h>
+#include <linux/i2c.h>
+#include <linux/led-class-multicolor.h>
+#include <linux/math64.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/property.h>
+#include <linux/regmap.h>
+#include <linux/regulator/consumer.h>
+#include <linux/string.h>
+
+#include <dt-bindings/leds/common.h>
+
+#define IS32FL3207_NUM_CHANNELS		18
+#define IS32FL3207_MAX_BRIGHTNESS	255
+
+#define IS32FL3207_REG_CONTROL		0x00
+#define IS32FL3207_REG_PWM_LOW(channel)	(0x01 + 2 * (channel))
+#define IS32FL3207_REG_PWM_UPDATE	0x49
+#define IS32FL3207_REG_SCALING(channel)	(0x4a + (channel))
+#define IS32FL3207_REG_GLOBAL_CURRENT	0x6e
+#define IS32FL3207_REG_RESET		0x7f
+
+#define IS32FL3207_CONTROL_ENABLE	BIT(0)

drivers/leds/rgb/leds-is32fl3207.c' new file +55 -0

+	unsigned long channels[BITS_TO_LONGS(IS32FL3207_NUM_CHANNELS)];
+	u32 output_max_microamp;
+	unsigned int num_leds;
+	bool shutting_down;
+	struct is32fl3207_led leds[] __counted_by(num_leds);
+};
+
+static int is32fl3207_parse_led_properties(struct is32fl3207 *chip,
+					   struct fwnode_handle *fwnode,
+					   unsigned int *max_brightness,
+					   unsigned int *brightness)
+{
+	enum led_default_state default_state;
+	u32 value;
+	int ret;
+
+	*max_brightness = IS32FL3207_MAX_BRIGHTNESS;
+	if (fwnode_property_present(fwnode, "max-brightness")) {
+		ret = fwnode_property_read_u32(fwnode, "max-brightness",
+					       &value);
+		if (ret)
+			return dev_err_probe(chip->dev, ret,
+					     "failed to read maximum brightness for %pfw\n",
+					     fwnode);
+		if (!value || value > IS32FL3207_MAX_BRIGHTNESS)
+			return dev_err_probe(chip->dev, -EINVAL,
+					     "invalid maximum brightness %u for %pfw\n",
+					     value, fwnode);
+
+		*max_brightness = value;
+	}
+
+	value = *max_brightness;
+	if (fwnode_property_present(fwnode, "default-brightness")) {
+		ret = fwnode_property_read_u32(fwnode, "default-brightness",
+					       &value);
+		if (ret)
+			return dev_err_probe(chip->dev, ret,
+					     "failed to read default brightness for %pfw\n",
+					     fwnode);
+		if (value > *max_brightness)
+			return dev_err_probe(chip->dev, -EINVAL,
+					     "invalid default brightness %u for %pfw\n",
+					     value, fwnode);
+	}
+
+	default_state = led_init_default_state_get(fwnode);
+	if (default_state == LEDS_DEFSTATE_KEEP)
+		return dev_err_probe(chip->dev, -EINVAL,
+				     "default state keep is not supported for %pfw\n",
+				     fwnode);
+
+	*brightness = default_state == LEDS_DEFSTATE_ON ? value : LED_OFF;
+	return 0;
+}

drivers/leds/rgb/leds-is32fl3207.c' new file +6 -0

+		if (fwnode_property_present(fwnode, unsupported[i]))
+			return dev_err_probe(chip->dev, -EINVAL,
+					     "%s is not supported for component %pfw\n",
+					     unsupported[i], fwnode);
+
+	return 0;

drivers/leds/rgb/leds-is32fl3207.c' new file +5 -0

+		ret = regmap_write(chip->regmap,
+				   IS32FL3207_REG_PWM_LOW(subleds[i].channel),
+				   subleds[i].brightness);
+		if (ret)
+			return ret;

drivers/leds/rgb/leds-is32fl3207.c' new file +27 -0

+
+	return is32fl3207_write_channels_locked(led->chip, &subled, 1);
+}
+
+static int is32fl3207_mc_brightness_set(struct led_classdev *cdev,
+					enum led_brightness brightness)
+{
+	struct led_classdev_mc *mcdev = lcdev_to_mccdev(cdev);
+	struct is32fl3207_led *led = container_of(mcdev, struct is32fl3207_led,
+						     mcdev);
+
+	guard(mutex)(&led->chip->lock);
+	if (led->chip->shutting_down)
+		return 0;
+
+	led_mc_calc_color_components(mcdev, brightness);
+
+	return is32fl3207_write_channels_locked(led->chip, mcdev->subled_info,
+						   mcdev->num_colors);
+}
+
+static int is32fl3207_turn_off_locked(struct is32fl3207 *chip,
+				      struct is32fl3207_led *led)
+{
+	struct led_classdev *cdev = led->led_cdev;
+	struct mc_subled subled = {
+		.brightness = LED_OFF,

drivers/leds/rgb/leds-is32fl3207.c' new file +9 -0

+	}
+
+	return is32fl3207_write_channels_locked(chip, &subled, 1);
+}
+
+static int is32fl3207_configure_channel(struct is32fl3207 *chip,
+					struct fwnode_handle *fwnode,
+					unsigned int *channel)
+{

drivers/leds/rgb/leds-is32fl3207.c' new file +14 -0

+
+	if (reg >= IS32FL3207_NUM_CHANNELS)
+		return dev_err_probe(chip->dev, -EINVAL,
+				     "channel %u is out of range\n", reg);
+
+	if (test_bit(reg, chip->channels))
+		return dev_err_probe(chip->dev, -EINVAL,
+				     "channel %u is used more than once\n",
+				     reg);
+
+	ret = fwnode_property_read_u32(fwnode, "led-max-microamp",
+				       &max_microamp);
+	if (ret)
+		return dev_err_probe(chip->dev, ret,

drivers/leds/rgb/leds-is32fl3207.c' new file +25 -0

+
+	guard(mutex)(&chip->lock);
+	ret = regmap_write(chip->regmap, IS32FL3207_REG_SCALING(reg),
+			   (unsigned int)scaling);
+	if (ret)
+		return ret;
+
+	set_bit(reg, chip->channels);
+	*channel = reg;
+
+	return 0;
+}
+
+static int is32fl3207_register_single(struct is32fl3207 *chip,
+				      struct fwnode_handle *fwnode,
+				      struct is32fl3207_led *led)
+{
+	struct led_init_data init_data = {
+		.devicename = dev_name(chip->dev),
+		.devname_mandatory = true,
+		.fwnode = fwnode,
+	};
+	unsigned int max_brightness;
+	unsigned int brightness;
+	u32 color;

drivers/leds/rgb/leds-is32fl3207.c' new file +190 -0

+	if (ret)
+		return ret;
+
+	if (fwnode_property_present(fwnode, "color")) {
+		ret = fwnode_property_read_u32(fwnode, "color", &color);
+		if (ret)
+			return dev_err_probe(chip->dev, ret,
+					     "failed to read color for %pfw\n",
+					     fwnode);
+		if (color >= LED_COLOR_ID_MAX || color == LED_COLOR_ID_MULTI ||
+		    color == LED_COLOR_ID_RGB)
+			return dev_err_probe(chip->dev, -EINVAL,
+					     "invalid single LED color %u\n",
+					     color);
+	}
+
+	ret = is32fl3207_configure_channel(chip, fwnode, &led->channel);
+	if (ret)
+		return ret;
+	led->chip = chip;
+	led->led_cdev = &led->cdev;
+	led->cdev.brightness = brightness;
+	led->cdev.max_brightness = max_brightness;
+	led->cdev.brightness_set_blocking = is32fl3207_brightness_set;
+
+	ret = is32fl3207_brightness_set(&led->cdev, brightness);
+	if (ret)
+		return ret;
+
+	return devm_led_classdev_register_ext(chip->dev, &led->cdev,
+					      &init_data);
+}
+
+static int is32fl3207_register_multicolor(struct is32fl3207 *chip,
+					  struct fwnode_handle *fwnode,
+					  struct is32fl3207_led *led)
+{
+	struct led_init_data init_data = {
+		.devicename = dev_name(chip->dev),
+		.devname_mandatory = true,
+		.fwnode = fwnode,
+	};
+	struct mc_subled *subleds;
+	DECLARE_BITMAP(color_map, LED_COLOR_ID_MAX);
+	unsigned int max_brightness;
+	unsigned int brightness;
+	unsigned int count;
+	unsigned int i = 0;
+	bool has_group_reg;
+	u32 group_color;
+	u32 group_reg;
+	unsigned int first_channel = IS32FL3207_NUM_CHANNELS;
+	int ret;
+
+	ret = is32fl3207_parse_led_properties(chip, fwnode,
+					      &max_brightness, &brightness);
+	if (ret)
+		return ret;
+
+	ret = fwnode_property_read_u32(fwnode, "color", &group_color);
+	if (ret)
+		return dev_err_probe(chip->dev, ret,
+				     "failed to read color for %pfw\n", fwnode);
+
+	if (group_color != LED_COLOR_ID_RGB &&
+	    group_color != LED_COLOR_ID_MULTI)
+		return dev_err_probe(chip->dev, -EINVAL,
+				     "invalid multicolor LED color %u\n",
+				     group_color);
+
+	has_group_reg = fwnode_property_present(fwnode, "reg");
+	if (has_group_reg) {
+		ret = fwnode_property_read_u32(fwnode, "reg", &group_reg);
+		if (ret)
+			return dev_err_probe(chip->dev, ret,
+					     "failed to read group index for %pfw\n",
+					     fwnode);
+	}
+
+	count = fwnode_get_child_node_count(fwnode);
+	if (!count || count > LED_COLOR_ID_MAX)
+		return dev_err_probe(chip->dev, -EINVAL,
+				     "invalid component count %u for %pfw\n",
+				     count, fwnode);
+
+	subleds = devm_kcalloc(chip->dev, count, sizeof(*subleds), GFP_KERNEL);
+	if (!subleds)
+		return -ENOMEM;
+	bitmap_zero(color_map, LED_COLOR_ID_MAX);
+
+	fwnode_for_each_child_node_scoped(fwnode, child) {
+		u32 color;
+
+		ret = is32fl3207_validate_component(chip, child);
+		if (ret)
+			return ret;
+
+		ret = fwnode_property_read_u32(child, "color", &color);
+		if (ret)
+			return dev_err_probe(chip->dev, ret,
+					     "failed to read color for %pfw\n",
+					     child);
+
+		if (color >= LED_COLOR_ID_MAX || color == LED_COLOR_ID_MULTI ||
+		    color == LED_COLOR_ID_RGB)
+			return dev_err_probe(chip->dev, -EINVAL,
+					     "invalid component color %u\n",
+					     color);
+		if (test_and_set_bit(color, color_map))
+			return dev_err_probe(chip->dev, -EINVAL,
+					     "component color %u is used more than once\n",
+					     color);
+
+		ret = is32fl3207_configure_channel(chip, child,
+						   &subleds[i].channel);
+		if (ret)
+			return ret;
+
+		subleds[i].color_index = color;
+		subleds[i].intensity = max_brightness;
+		subleds[i].max_intensity = 0;
+		first_channel = min(first_channel, subleds[i].channel);
+		i++;
+	}
+
+	if (has_group_reg && group_reg != first_channel)
+		return dev_err_probe(chip->dev, -EINVAL,
+				     "group index %u does not match first channel %u\n",
+				     group_reg, first_channel);
+
+	led->chip = chip;
+	led->led_cdev = &led->mcdev.led_cdev;
+	led->mcdev.num_colors = count;
+	led->mcdev.subled_info = subleds;
+	led->mcdev.led_cdev.brightness = brightness;
+	led->mcdev.led_cdev.max_brightness = max_brightness;
+	led->mcdev.led_cdev.brightness_set_blocking =
+		is32fl3207_mc_brightness_set;
+
+	ret = is32fl3207_mc_brightness_set(&led->mcdev.led_cdev,
+					   brightness);
+	if (ret)
+		return ret;
+
+	return devm_led_classdev_multicolor_register_ext(chip->dev, &led->mcdev,
+						     &init_data);
+}
+
+static int is32fl3207_register_led(struct is32fl3207 *chip,
+				   struct fwnode_handle *fwnode,
+				   struct is32fl3207_led *led)
+{
+	unsigned int count = fwnode_get_child_node_count(fwnode);
+	bool has_color = fwnode_property_present(fwnode, "color");
+	u32 color = LED_COLOR_ID_MAX;
+	int ret;
+
+	if (has_color) {
+		ret = fwnode_property_read_u32(fwnode, "color", &color);
+		if (ret)
+			return dev_err_probe(chip->dev, ret,
+					     "failed to read color for %pfw\n",
+					     fwnode);
+	}
+
+	if (color == LED_COLOR_ID_RGB || color == LED_COLOR_ID_MULTI) {
+		if (!count)
+			return dev_err_probe(chip->dev, -EINVAL,
+					     "multicolor LED %pfw has no components\n",
+					     fwnode);
+
+		return is32fl3207_register_multicolor(chip, fwnode, led);
+	}
+
+	if (count)
+		return dev_err_probe(chip->dev, -EINVAL,
+				     "single LED %pfw must not have components\n",
+				     fwnode);
+
+	return is32fl3207_register_single(chip, fwnode, led);
+}
+
+static int is32fl3207_clear_retained_scaling(struct is32fl3207 *chip)
+{
+	u8 scaling[IS32FL3207_NUM_CHANNELS] = { };
+	int ret;
+
+	ret = regmap_write(chip->regmap, IS32FL3207_REG_CONTROL, 0);
+	if (ret)
+		return ret;

drivers/leds/rgb/leds-is32fl3207.c' new file +49 -0

+	int disable_ret;
+	int ret;
+
+	/* Software reset requires normal operation (SSD = 1). */
+	ret = regmap_write(chip->regmap, IS32FL3207_REG_CONTROL,
+			   IS32FL3207_CONTROL_ENABLE);
+	if (ret)
+		return ret;
+
+	ret = regmap_write(chip->regmap, IS32FL3207_REG_RESET, 0);
+	if (ret)
+		return ret;
+	usleep_range(200, 300);
+
+	ret = regmap_write(chip->regmap, IS32FL3207_REG_CONTROL, 0);
+	if (ret)
+		return ret;
+
+	ret = regmap_write(chip->regmap, IS32FL3207_REG_GLOBAL_CURRENT,
+			   IS32FL3207_GLOBAL_CURRENT_MAX);
+	if (ret)
+		return ret;
+
+	ret = regmap_bulk_write(chip->regmap, IS32FL3207_REG_SCALING(0),
+				scaling, sizeof(scaling));
+	if (ret)
+		return ret;
+
+	ret = regmap_bulk_write(chip->regmap, IS32FL3207_REG_PWM_LOW(0), pwm,
+				sizeof(pwm));
+	if (ret)
+		return ret;
+
+	/* PWM data can be latched only in normal operation. */
+	ret = regmap_write(chip->regmap, IS32FL3207_REG_CONTROL,
+			   IS32FL3207_CONTROL_ENABLE);
+	if (ret)
+		return ret;
+
+	ret = regmap_write(chip->regmap, IS32FL3207_REG_PWM_UPDATE, 0);
+	disable_ret = regmap_write(chip->regmap, IS32FL3207_REG_CONTROL, 0);
+
+	return ret ?: disable_ret;
+}
+
+static int is32fl3207_enable(struct is32fl3207 *chip)
+{
+	int ret;
+

drivers/leds/rgb/leds-is32fl3207.c' new file +20 -0

+
+	return ret;
+}
+
+static void is32fl3207_disable_locked(struct is32fl3207 *chip)
+{
+	regmap_write(chip->regmap, IS32FL3207_REG_CONTROL, 0);
+	if (chip->enable_gpio)
+		gpiod_set_value_cansleep(chip->enable_gpio, 0);
+}
+
+static void is32fl3207_disable(void *data)
+{
+	struct is32fl3207 *chip = data;
+
+	guard(mutex)(&chip->lock);
+	chip->shutting_down = true;
+	is32fl3207_disable_locked(chip);
+}
+

drivers/leds/rgb/leds-is32fl3207.c' new file +100 -0

+	unsigned int count;
+	unsigned int i = 0;
+	u32 riset_ohms;
+	int ret;
+
+	count = device_get_child_node_count(dev);
+	if (!count || count > IS32FL3207_NUM_CHANNELS)
+		return dev_err_probe(dev, -EINVAL,
+				     "invalid LED count %u\n", count);
+
+	ddata = devm_kzalloc(dev, struct_size(ddata, leds, count), GFP_KERNEL);
+	if (!ddata)
+		return -ENOMEM;
+
+	ddata->dev = dev;
+	ddata->num_leds = count;
+	i2c_set_clientdata(client, ddata);
+
+	ret = device_property_read_u32(dev, "issi,riset-ohms", &riset_ohms);
+	if (ret)
+		return dev_err_probe(dev, ret, "failed to read RISET value\n");
+
+	if (riset_ohms < 2000)
+		return dev_err_probe(dev, -EINVAL,
+				     "RISET value %u is below 2000 ohms\n",
+				     riset_ohms);
+
+	ddata->output_max_microamp = div_u64(IS32FL3207_CURRENT_NUMERATOR,
+					     riset_ohms);
+	if (!ddata->output_max_microamp)
+		return dev_err_probe(dev, -EINVAL,
+				     "RISET value %u is too large\n",
+				     riset_ohms);
+
+	ddata->enable_gpio = devm_gpiod_get_optional(dev, "enable",
+						     GPIOD_OUT_LOW);
+	if (IS_ERR(ddata->enable_gpio))
+		return dev_err_probe(dev, PTR_ERR(ddata->enable_gpio),
+				     "failed to get enable GPIO\n");
+
+	ddata->regmap = devm_regmap_init_i2c(client,
+					     &is32fl3207_regmap_config);
+	if (IS_ERR(ddata->regmap))
+		return dev_err_probe(dev, PTR_ERR(ddata->regmap),
+				     "failed to allocate register map\n");
+
+	ret = devm_mutex_init(dev, &ddata->lock);
+	if (ret)
+		return ret;
+
+	ret = devm_regulator_get_enable_optional(dev, "vcc");
+	if (ret && ret != -ENODEV)
+		return dev_err_probe(dev, ret,
+				     "failed to enable VCC regulator\n");
+
+	ret = devm_add_action_or_reset(dev, is32fl3207_disable, ddata);
+	if (ret)
+		return ret;
+
+	/* Let VCC settle while SDB keeps the outputs disabled. */
+	usleep_range(1000, 2000);
+
+	/*
+	 * Registers remain accessible with SDB low. Clear retained scaling
+	 * before releasing hardware shutdown.
+	 */
+	ret = is32fl3207_clear_retained_scaling(ddata);
+	if (ret)
+		return dev_err_probe(dev, ret,
+				     "failed to clear retained current scaling\n");
+
+	if (ddata->enable_gpio)
+		gpiod_set_value_cansleep(ddata->enable_gpio, 1);
+
+	/* The SDB rising edge resets the I2C interface; allow it to settle. */
+	usleep_range(1000, 2000);
+
+	ret = is32fl3207_hw_init(ddata);
+	if (ret)
+		return dev_err_probe(dev, ret,
+				     "failed to initialize controller\n");
+
+	device_for_each_child_node_scoped(dev, child) {
+		struct is32fl3207_led *led = &ddata->leds[i];
+
+		ret = is32fl3207_register_led(ddata, child, led);
+		if (ret)
+			return ret;
+
+		i++;
+	}
+
+	ret = is32fl3207_enable(ddata);
+	if (ret)
+		return dev_err_probe(dev, ret, "failed to enable controller\n");
+
+	return 0;
+}
+
+static void is32fl3207_shutdown(struct i2c_client *client)

drivers/leds/rgb/leds-is32fl3207.c' new file +5 -0

+		if (chip->leds[i].led_cdev->flags & LED_RETAIN_AT_SHUTDOWN) {
+			retain_state = true;
+			break;
+		}
+

drivers/leds/rgb/leds-is32fl3207.c' new file +37 -0

+		ret = is32fl3207_turn_off_locked(chip, &chip->leds[i]);
+
+		if (ret) {
+			dev_warn(chip->dev,
+				 "failed to turn off LEDs during shutdown: %d\n",
+				 ret);
+			break;
+		}
+	}
+}
+
+static const struct of_device_id is32fl3207_of_match[] = {
+	{ .compatible = "issi,is32fl3207" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, is32fl3207_of_match);
+
+static const struct i2c_device_id is32fl3207_id[] = {
+	{ .name = "is32fl3207" },
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, is32fl3207_id);
+
+static struct i2c_driver is32fl3207_driver = {
+	.driver = {
+		.name = "is32fl3207",
+		.of_match_table = is32fl3207_of_match,
+	},
+	.probe = is32fl3207_probe,
+	.shutdown = is32fl3207_shutdown,
+	.id_table = is32fl3207_id,
+};
+module_i2c_driver(is32fl3207_driver);
+
+MODULE_AUTHOR("Ahmad Byagowi <[email protected]>");
+MODULE_DESCRIPTION("Lumissil IS32FL3207 LED controller driver");
+MODULE_LICENSE("GPL");

Signature · 1 line

2.50.1 (Apple Git-155)

Is it even architecturally possible to set brightness on a shutdown or disabled LED? That sounds like a bigger problem.