1 files changed, 341 insertions, 188 deletions

diff --git a/drivers/leds/leds-is31fl319x.c b/drivers/leds/leds-is31fl319x.c
index 4161b9dd7e48..52b59b62f437 100644
--- a/drivers/leds/leds-is31fl319x.c
+++ b/drivers/leds/leds-is31fl319x.c
@@ -11,9 +11,9 @@
 #include <linux/err.h>
 #include <linux/i2c.h>
 #include <linux/leds.h>
+#include <linux/mod_devicetable.h>
 #include <linux/module.h>
-#include <linux/of.h>
-#include <linux/of_device.h>
+#include <linux/property.h>
 #include <linux/regmap.h>
 #include <linux/slab.h>
 #include <linux/delay.h>
@@ -21,39 +21,64 @@
 
 /* register numbers */
 #define IS31FL319X_SHUTDOWN		0x00
-#define IS31FL319X_CTRL1		0x01
-#define IS31FL319X_CTRL2		0x02
-#define IS31FL319X_CONFIG1		0x03
-#define IS31FL319X_CONFIG2		0x04
-#define IS31FL319X_RAMP_MODE		0x05
-#define IS31FL319X_BREATH_MASK		0x06
-#define IS31FL319X_PWM(channel)		(0x07 + channel)
-#define IS31FL319X_DATA_UPDATE		0x10
-#define IS31FL319X_T0(channel)		(0x11 + channel)
-#define IS31FL319X_T123_1		0x1a
-#define IS31FL319X_T123_2		0x1b
-#define IS31FL319X_T123_3		0x1c
-#define IS31FL319X_T4(channel)		(0x1d + channel)
-#define IS31FL319X_TIME_UPDATE		0x26
-#define IS31FL319X_RESET		0xff
-
-#define IS31FL319X_REG_CNT		(IS31FL319X_RESET + 1)
+
+/* registers for 3190, 3191 and 3193 */
+#define IS31FL3190_BREATHING		0x01
+#define IS31FL3190_LEDMODE		0x02
+#define IS31FL3190_CURRENT		0x03
+#define IS31FL3190_PWM(channel)		(0x04 + channel)
+#define IS31FL3190_DATA_UPDATE		0x07
+#define IS31FL3190_T0(channel)		(0x0a + channel)
+#define IS31FL3190_T1T2(channel)	(0x10 + channel)
+#define IS31FL3190_T3T4(channel)	(0x16 + channel)
+#define IS31FL3190_TIME_UPDATE		0x1c
+#define IS31FL3190_LEDCONTROL		0x1d
+#define IS31FL3190_RESET		0x2f
+
+#define IS31FL3190_CURRENT_uA_MIN	5000
+#define IS31FL3190_CURRENT_uA_DEFAULT	42000
+#define IS31FL3190_CURRENT_uA_MAX	42000
+#define IS31FL3190_CURRENT_MASK		GENMASK(4, 2)
+#define IS31FL3190_CURRENT_5_mA		0x02
+#define IS31FL3190_CURRENT_10_mA	0x01
+#define IS31FL3190_CURRENT_17dot5_mA	0x04
+#define IS31FL3190_CURRENT_30_mA	0x03
+#define IS31FL3190_CURRENT_42_mA	0x00
+
+/* registers for 3196 and 3199 */
+#define IS31FL3196_CTRL1		0x01
+#define IS31FL3196_CTRL2		0x02
+#define IS31FL3196_CONFIG1		0x03
+#define IS31FL3196_CONFIG2		0x04
+#define IS31FL3196_RAMP_MODE		0x05
+#define IS31FL3196_BREATH_MARK		0x06
+#define IS31FL3196_PWM(channel)		(0x07 + channel)
+#define IS31FL3196_DATA_UPDATE		0x10
+#define IS31FL3196_T0(channel)		(0x11 + channel)
+#define IS31FL3196_T123_1		0x1a
+#define IS31FL3196_T123_2		0x1b
+#define IS31FL3196_T123_3		0x1c
+#define IS31FL3196_T4(channel)		(0x1d + channel)
+#define IS31FL3196_TIME_UPDATE		0x26
+#define IS31FL3196_RESET		0xff
+
+#define IS31FL3196_REG_CNT		(IS31FL3196_RESET + 1)
 
 #define IS31FL319X_MAX_LEDS		9
 
 /* CS (Current Setting) in CONFIG2 register */
-#define IS31FL319X_CONFIG2_CS_SHIFT	4
-#define IS31FL319X_CONFIG2_CS_MASK	0x7
-#define IS31FL319X_CONFIG2_CS_STEP_REF	12
+#define IS31FL3196_CONFIG2_CS_SHIFT	4
+#define IS31FL3196_CONFIG2_CS_MASK	GENMASK(2, 0)
+#define IS31FL3196_CONFIG2_CS_STEP_REF	12
 
-#define IS31FL319X_CURRENT_MIN		((u32)5000)
-#define IS31FL319X_CURRENT_MAX		((u32)40000)
-#define IS31FL319X_CURRENT_STEP		((u32)5000)
-#define IS31FL319X_CURRENT_DEFAULT	((u32)20000)
+#define IS31FL3196_CURRENT_uA_MIN	5000
+#define IS31FL3196_CURRENT_uA_MAX	40000
+#define IS31FL3196_CURRENT_uA_STEP	5000
+#define IS31FL3196_CURRENT_uA_DEFAULT	20000
 
 /* Audio gain in CONFIG2 register */
-#define IS31FL319X_AUDIO_GAIN_DB_MAX	((u32)21)
-#define IS31FL319X_AUDIO_GAIN_DB_STEP	((u32)3)
+#define IS31FL3196_AUDIO_GAIN_DB_MAX	((u32)21)
+#define IS31FL3196_AUDIO_GAIN_DB_STEP	3
 
 /*
  * regmap is used as a cache of chip's register space,
@@ -78,52 +103,161 @@ struct is31fl319x_chip {
 
 struct is31fl319x_chipdef {
 	int num_leds;
+	u8 reset_reg;
+	const struct regmap_config *is31fl319x_regmap_config;
+	int (*brightness_set)(struct led_classdev *cdev, enum led_brightness brightness);
+	u32 current_default;
+	u32 current_min;
+	u32 current_max;
+	bool is_3196or3199;
 };
 
-static const struct is31fl319x_chipdef is31fl3190_cdef = {
-	.num_leds = 1,
-};
+static bool is31fl319x_readable_reg(struct device *dev, unsigned int reg)
+{
+	/* we have no readable registers */
+	return false;
+}
 
-static const struct is31fl319x_chipdef is31fl3193_cdef = {
-	.num_leds = 3,
+static bool is31fl3190_volatile_reg(struct device *dev, unsigned int reg)
+{
+	/* volatile registers are not cached */
+	switch (reg) {
+	case IS31FL3190_DATA_UPDATE:
+	case IS31FL3190_TIME_UPDATE:
+	case IS31FL3190_RESET:
+		return true; /* always write-through */
+	default:
+		return false;
+	}
+}
+
+static const struct reg_default is31fl3190_reg_defaults[] = {
+	{ IS31FL3190_LEDMODE, 0x00 },
+	{ IS31FL3190_CURRENT, 0x00 },
+	{ IS31FL3190_PWM(0), 0x00 },
+	{ IS31FL3190_PWM(1), 0x00 },
+	{ IS31FL3190_PWM(2), 0x00 },
 };
 
-static const struct is31fl319x_chipdef is31fl3196_cdef = {
-	.num_leds = 6,
+static struct regmap_config is31fl3190_regmap_config = {
+	.reg_bits = 8,
+	.val_bits = 8,
+	.max_register = IS31FL3190_RESET,
+	.cache_type = REGCACHE_FLAT,
+	.readable_reg = is31fl319x_readable_reg,
+	.volatile_reg = is31fl3190_volatile_reg,
+	.reg_defaults = is31fl3190_reg_defaults,
+	.num_reg_defaults = ARRAY_SIZE(is31fl3190_reg_defaults),
 };
 
-static const struct is31fl319x_chipdef is31fl3199_cdef = {
-	.num_leds = 9,
+static bool is31fl3196_volatile_reg(struct device *dev, unsigned int reg)
+{
+	/* volatile registers are not cached */
+	switch (reg) {
+	case IS31FL3196_DATA_UPDATE:
+	case IS31FL3196_TIME_UPDATE:
+	case IS31FL3196_RESET:
+		return true; /* always write-through */
+	default:
+		return false;
+	}
+}
+
+static const struct reg_default is31fl3196_reg_defaults[] = {
+	{ IS31FL3196_CONFIG1, 0x00 },
+	{ IS31FL3196_CONFIG2, 0x00 },
+	{ IS31FL3196_PWM(0), 0x00 },
+	{ IS31FL3196_PWM(1), 0x00 },
+	{ IS31FL3196_PWM(2), 0x00 },
+	{ IS31FL3196_PWM(3), 0x00 },
+	{ IS31FL3196_PWM(4), 0x00 },
+	{ IS31FL3196_PWM(5), 0x00 },
+	{ IS31FL3196_PWM(6), 0x00 },
+	{ IS31FL3196_PWM(7), 0x00 },
+	{ IS31FL3196_PWM(8), 0x00 },
 };
 
-static const struct of_device_id of_is31fl319x_match[] = {
-	{ .compatible = "issi,is31fl3190", .data = &is31fl3190_cdef, },
-	{ .compatible = "issi,is31fl3191", .data = &is31fl3190_cdef, },
-	{ .compatible = "issi,is31fl3193", .data = &is31fl3193_cdef, },
-	{ .compatible = "issi,is31fl3196", .data = &is31fl3196_cdef, },
-	{ .compatible = "issi,is31fl3199", .data = &is31fl3199_cdef, },
-	{ .compatible = "si-en,sn3199",    .data = &is31fl3199_cdef, },
-	{ }
+static struct regmap_config is31fl3196_regmap_config = {
+	.reg_bits = 8,
+	.val_bits = 8,
+	.max_register = IS31FL3196_REG_CNT,
+	.cache_type = REGCACHE_FLAT,
+	.readable_reg = is31fl319x_readable_reg,
+	.volatile_reg = is31fl3196_volatile_reg,
+	.reg_defaults = is31fl3196_reg_defaults,
+	.num_reg_defaults = ARRAY_SIZE(is31fl3196_reg_defaults),
 };
-MODULE_DEVICE_TABLE(of, of_is31fl319x_match);
 
-static int is31fl319x_brightness_set(struct led_classdev *cdev,
+static int is31fl3190_brightness_set(struct led_classdev *cdev,
+				     enum led_brightness brightness)
+{
+	struct is31fl319x_led *led = container_of(cdev, struct is31fl319x_led, cdev);
+	struct is31fl319x_chip *is31 = led->chip;
+	int chan = led - is31->leds;
+	int ret;
+	int i;
+	u8 ctrl = 0;
+
+	dev_dbg(&is31->client->dev, "channel %d: %d\n", chan, brightness);
+
+	mutex_lock(&is31->lock);
+
+	/* update PWM register */
+	ret = regmap_write(is31->regmap, IS31FL3190_PWM(chan), brightness);
+	if (ret < 0)
+		goto out;
+
+	/* read current brightness of all PWM channels */
+	for (i = 0; i < is31->cdef->num_leds; i++) {
+		unsigned int pwm_value;
+		bool on;
+
+		/*
+		 * since neither cdev nor the chip can provide
+		 * the current setting, we read from the regmap cache
+		 */
+
+		ret = regmap_read(is31->regmap, IS31FL3190_PWM(i), &pwm_value);
+		on = ret >= 0 && pwm_value > LED_OFF;
+
+		ctrl |= on << i;
+	}
+
+	if (ctrl > 0) {
+		dev_dbg(&is31->client->dev, "power up %02x\n", ctrl);
+		regmap_write(is31->regmap, IS31FL3190_LEDCONTROL, ctrl);
+		/* update PWMs */
+		regmap_write(is31->regmap, IS31FL3190_DATA_UPDATE, 0x00);
+		/* enable chip from shut down and enable all channels */
+		ret = regmap_write(is31->regmap, IS31FL319X_SHUTDOWN, 0x20);
+	} else {
+		dev_dbg(&is31->client->dev, "power down\n");
+		/* shut down (no need to clear LEDCONTROL) */
+		ret = regmap_write(is31->regmap, IS31FL319X_SHUTDOWN, 0x01);
+	}
+
+out:
+	mutex_unlock(&is31->lock);
+
+	return ret;
+}
+
+static int is31fl3196_brightness_set(struct led_classdev *cdev,
 				     enum led_brightness brightness)
 {
-	struct is31fl319x_led *led = container_of(cdev, struct is31fl319x_led,
-						  cdev);
+	struct is31fl319x_led *led = container_of(cdev, struct is31fl319x_led, cdev);
 	struct is31fl319x_chip *is31 = led->chip;
 	int chan = led - is31->leds;
 	int ret;
 	int i;
 	u8 ctrl1 = 0, ctrl2 = 0;
 
-	dev_dbg(&is31->client->dev, "%s %d: %d\n", __func__, chan, brightness);
+	dev_dbg(&is31->client->dev, "channel %d: %d\n", chan, brightness);
 
 	mutex_lock(&is31->lock);
 
 	/* update PWM register */
-	ret = regmap_write(is31->regmap, IS31FL319X_PWM(chan), brightness);
+	ret = regmap_write(is31->regmap, IS31FL3196_PWM(chan), brightness);
 	if (ret < 0)
 		goto out;
 
@@ -137,9 +271,7 @@ static int is31fl319x_brightness_set(struct led_classdev *cdev,
 		 * the current setting, we read from the regmap cache
 		 */
 
-		ret = regmap_read(is31->regmap, IS31FL319X_PWM(i), &pwm_value);
-		dev_dbg(&is31->client->dev, "%s read %d: ret=%d: %d\n",
-			__func__, i, ret, pwm_value);
+		ret = regmap_read(is31->regmap, IS31FL3196_PWM(i), &pwm_value);
 		on = ret >= 0 && pwm_value > LED_OFF;
 
 		if (i < 3)
@@ -153,10 +285,10 @@ static int is31fl319x_brightness_set(struct led_classdev *cdev,
 	if (ctrl1 > 0 || ctrl2 > 0) {
 		dev_dbg(&is31->client->dev, "power up %02x %02x\n",
 			ctrl1, ctrl2);
-		regmap_write(is31->regmap, IS31FL319X_CTRL1, ctrl1);
-		regmap_write(is31->regmap, IS31FL319X_CTRL2, ctrl2);
+		regmap_write(is31->regmap, IS31FL3196_CTRL1, ctrl1);
+		regmap_write(is31->regmap, IS31FL3196_CTRL2, ctrl2);
 		/* update PWMs */
-		regmap_write(is31->regmap, IS31FL319X_DATA_UPDATE, 0x00);
+		regmap_write(is31->regmap, IS31FL3196_DATA_UPDATE, 0x00);
 		/* enable chip from shut down */
 		ret = regmap_write(is31->regmap, IS31FL319X_SHUTDOWN, 0x01);
 	} else {
@@ -171,92 +303,141 @@ out:
 	return ret;
 }
 
-static int is31fl319x_parse_child_dt(const struct device *dev,
-				     const struct device_node *child,
-				     struct is31fl319x_led *led)
+static const struct is31fl319x_chipdef is31fl3190_cdef = {
+	.num_leds = 1,
+	.reset_reg = IS31FL3190_RESET,
+	.is31fl319x_regmap_config = &is31fl3190_regmap_config,
+	.brightness_set = is31fl3190_brightness_set,
+	.current_default = IS31FL3190_CURRENT_uA_DEFAULT,
+	.current_min = IS31FL3190_CURRENT_uA_MIN,
+	.current_max = IS31FL3190_CURRENT_uA_MAX,
+	.is_3196or3199 = false,
+};
+
+static const struct is31fl319x_chipdef is31fl3193_cdef = {
+	.num_leds = 3,
+	.reset_reg = IS31FL3190_RESET,
+	.is31fl319x_regmap_config = &is31fl3190_regmap_config,
+	.brightness_set = is31fl3190_brightness_set,
+	.current_default = IS31FL3190_CURRENT_uA_DEFAULT,
+	.current_min = IS31FL3190_CURRENT_uA_MIN,
+	.current_max = IS31FL3190_CURRENT_uA_MAX,
+	.is_3196or3199 = false,
+};
+
+static const struct is31fl319x_chipdef is31fl3196_cdef = {
+	.num_leds = 6,
+	.reset_reg = IS31FL3196_RESET,
+	.is31fl319x_regmap_config = &is31fl3196_regmap_config,
+	.brightness_set = is31fl3196_brightness_set,
+	.current_default = IS31FL3196_CURRENT_uA_DEFAULT,
+	.current_min = IS31FL3196_CURRENT_uA_MIN,
+	.current_max = IS31FL3196_CURRENT_uA_MAX,
+	.is_3196or3199 = true,
+};
+
+static const struct is31fl319x_chipdef is31fl3199_cdef = {
+	.num_leds = 9,
+	.reset_reg = IS31FL3196_RESET,
+	.is31fl319x_regmap_config = &is31fl3196_regmap_config,
+	.brightness_set = is31fl3196_brightness_set,
+	.current_default = IS31FL3196_CURRENT_uA_DEFAULT,
+	.current_min = IS31FL3196_CURRENT_uA_MIN,
+	.current_max = IS31FL3196_CURRENT_uA_MAX,
+	.is_3196or3199 = true,
+};
+
+static const struct of_device_id of_is31fl319x_match[] = {
+	{ .compatible = "issi,is31fl3190", .data = &is31fl3190_cdef, },
+	{ .compatible = "issi,is31fl3191", .data = &is31fl3190_cdef, },
+	{ .compatible = "issi,is31fl3193", .data = &is31fl3193_cdef, },
+	{ .compatible = "issi,is31fl3196", .data = &is31fl3196_cdef, },
+	{ .compatible = "issi,is31fl3199", .data = &is31fl3199_cdef, },
+	{ .compatible = "si-en,sn3190",    .data = &is31fl3190_cdef, },
+	{ .compatible = "si-en,sn3191",    .data = &is31fl3190_cdef, },
+	{ .compatible = "si-en,sn3193",    .data = &is31fl3193_cdef, },
+	{ .compatible = "si-en,sn3196",    .data = &is31fl3196_cdef, },
+	{ .compatible = "si-en,sn3199",    .data = &is31fl3199_cdef, },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, of_is31fl319x_match);
+
+static int is31fl319x_parse_child_fw(const struct device *dev,
+				     const struct fwnode_handle *child,
+				     struct is31fl319x_led *led,
+				     struct is31fl319x_chip *is31)
 {
 	struct led_classdev *cdev = &led->cdev;
 	int ret;
 
-	if (of_property_read_string(child, "label", &cdev->name))
-		cdev->name = child->name;
+	if (fwnode_property_read_string(child, "label", &cdev->name))
+		cdev->name = fwnode_get_name(child);
 
-	ret = of_property_read_string(child, "linux,default-trigger",
-				      &cdev->default_trigger);
+	ret = fwnode_property_read_string(child, "linux,default-trigger", &cdev->default_trigger);
 	if (ret < 0 && ret != -EINVAL) /* is optional */
 		return ret;
 
-	led->max_microamp = IS31FL319X_CURRENT_DEFAULT;
-	ret = of_property_read_u32(child, "led-max-microamp",
-				   &led->max_microamp);
+	led->max_microamp = is31->cdef->current_default;
+	ret = fwnode_property_read_u32(child, "led-max-microamp", &led->max_microamp);
 	if (!ret) {
-		if (led->max_microamp < IS31FL319X_CURRENT_MIN)
+		if (led->max_microamp < is31->cdef->current_min)
 			return -EINVAL;	/* not supported */
 		led->max_microamp = min(led->max_microamp,
-					  IS31FL319X_CURRENT_MAX);
+					is31->cdef->current_max);
 	}
 
 	return 0;
 }
 
-static int is31fl319x_parse_dt(struct device *dev,
-			       struct is31fl319x_chip *is31)
+static int is31fl319x_parse_fw(struct device *dev, struct is31fl319x_chip *is31)
 {
-	struct device_node *np = dev_of_node(dev), *child;
+	struct fwnode_handle *fwnode = dev_fwnode(dev), *child;
 	int count;
 	int ret;
 
-	if (!np)
-		return -ENODEV;
-
-	is31->shutdown_gpio = devm_gpiod_get_optional(dev,
-						"shutdown",
-						GPIOD_OUT_HIGH);
-	if (IS_ERR(is31->shutdown_gpio)) {
-		ret = PTR_ERR(is31->shutdown_gpio);
-		dev_err(dev, "Failed to get shutdown gpio: %d\n", ret);
-		return ret;
-	}
+	is31->shutdown_gpio = devm_gpiod_get_optional(dev, "shutdown", GPIOD_OUT_HIGH);
+	if (IS_ERR(is31->shutdown_gpio))
+		return dev_err_probe(dev, PTR_ERR(is31->shutdown_gpio),
+				     "Failed to get shutdown gpio\n");
 
 	is31->cdef = device_get_match_data(dev);
 
-	count = of_get_available_child_count(np);
+	count = 0;
+	fwnode_for_each_available_child_node(fwnode, child)
+		count++;
 
 	dev_dbg(dev, "probing with %d leds defined in DT\n", count);
 
-	if (!count || count > is31->cdef->num_leds) {
-		dev_err(dev, "Number of leds defined must be between 1 and %u\n",
-			is31->cdef->num_leds);
-		return -ENODEV;
-	}
+	if (!count || count > is31->cdef->num_leds)
+		return dev_err_probe(dev, -ENODEV,
+				     "Number of leds defined must be between 1 and %u\n",
+				     is31->cdef->num_leds);
 
-	for_each_available_child_of_node(np, child) {
+	fwnode_for_each_available_child_node(fwnode, child) {
 		struct is31fl319x_led *led;
 		u32 reg;
 
-		ret = of_property_read_u32(child, "reg", &reg);
+		ret = fwnode_property_read_u32(child, "reg", &reg);
 		if (ret) {
-			dev_err(dev, "Failed to read led 'reg' property\n");
+			ret = dev_err_probe(dev, ret, "Failed to read led 'reg' property\n");
 			goto put_child_node;
 		}
 
 		if (reg < 1 || reg > is31->cdef->num_leds) {
-			dev_err(dev, "invalid led reg %u\n", reg);
-			ret = -EINVAL;
+			ret = dev_err_probe(dev, -EINVAL, "invalid led reg %u\n", reg);
 			goto put_child_node;
 		}
 
 		led = &is31->leds[reg - 1];
 
 		if (led->configured) {
-			dev_err(dev, "led %u is already configured\n", reg);
-			ret = -EINVAL;
+			ret = dev_err_probe(dev, -EINVAL, "led %u is already configured\n", reg);
 			goto put_child_node;
 		}
 
-		ret = is31fl319x_parse_child_dt(dev, child, led);
+		ret = is31fl319x_parse_child_fw(dev, child, led, is31);
 		if (ret) {
-			dev_err(dev, "led %u DT parsing failed\n", reg);
+			ret = dev_err_probe(dev, ret, "led %u DT parsing failed\n", reg);
 			goto put_child_node;
 		}
 
@@ -264,82 +445,62 @@ static int is31fl319x_parse_dt(struct device *dev,
 	}
 
 	is31->audio_gain_db = 0;
-	ret = of_property_read_u32(np, "audio-gain-db", &is31->audio_gain_db);
-	if (!ret)
-		is31->audio_gain_db = min(is31->audio_gain_db,
-					  IS31FL319X_AUDIO_GAIN_DB_MAX);
+	if (is31->cdef->is_3196or3199) {
+		ret = fwnode_property_read_u32(fwnode, "audio-gain-db", &is31->audio_gain_db);
+		if (!ret)
+			is31->audio_gain_db = min(is31->audio_gain_db,
+						  IS31FL3196_AUDIO_GAIN_DB_MAX);
+	}
 
 	return 0;
 
 put_child_node:
-	of_node_put(child);
+	fwnode_handle_put(child);
 	return ret;
 }
 
-static bool is31fl319x_readable_reg(struct device *dev, unsigned int reg)
-{ /* we have no readable registers */
-	return false;
-}
-
-static bool is31fl319x_volatile_reg(struct device *dev, unsigned int reg)
-{ /* volatile registers are not cached */
-	switch (reg) {
-	case IS31FL319X_DATA_UPDATE:
-	case IS31FL319X_TIME_UPDATE:
-	case IS31FL319X_RESET:
-		return true; /* always write-through */
+static inline int is31fl3190_microamp_to_cs(struct device *dev, u32 microamp)
+{
+	switch (microamp) {
+	case 5000:
+		return IS31FL3190_CURRENT_5_mA;
+	case 10000:
+		return IS31FL3190_CURRENT_10_mA;
+	case 17500:
+		return IS31FL3190_CURRENT_17dot5_mA;
+	case 30000:
+		return IS31FL3190_CURRENT_30_mA;
+	case 42000:
+		return IS31FL3190_CURRENT_42_mA;
 	default:
-		return false;
+		dev_warn(dev, "Unsupported current value: %d, using 5000 µA!\n", microamp);
+		return IS31FL3190_CURRENT_5_mA;
 	}
 }
 
-static const struct reg_default is31fl319x_reg_defaults[] = {
-	{ IS31FL319X_CONFIG1, 0x00},
-	{ IS31FL319X_CONFIG2, 0x00},
-	{ IS31FL319X_PWM(0), 0x00},
-	{ IS31FL319X_PWM(1), 0x00},
-	{ IS31FL319X_PWM(2), 0x00},
-	{ IS31FL319X_PWM(3), 0x00},
-	{ IS31FL319X_PWM(4), 0x00},
-	{ IS31FL319X_PWM(5), 0x00},
-	{ IS31FL319X_PWM(6), 0x00},
-	{ IS31FL319X_PWM(7), 0x00},
-	{ IS31FL319X_PWM(8), 0x00},
-};
-
-static struct regmap_config regmap_config = {
-	.reg_bits = 8,
-	.val_bits = 8,
-	.max_register = IS31FL319X_REG_CNT,
-	.cache_type = REGCACHE_FLAT,
-	.readable_reg = is31fl319x_readable_reg,
-	.volatile_reg = is31fl319x_volatile_reg,
-	.reg_defaults = is31fl319x_reg_defaults,
-	.num_reg_defaults = ARRAY_SIZE(is31fl319x_reg_defaults),
-};
-
-static inline int is31fl319x_microamp_to_cs(struct device *dev, u32 microamp)
-{ /* round down to nearest supported value (range check done by caller) */
-	u32 step = microamp / IS31FL319X_CURRENT_STEP;
+static inline int is31fl3196_microamp_to_cs(struct device *dev, u32 microamp)
+{
+	/* round down to nearest supported value (range check done by caller) */
+	u32 step = microamp / IS31FL3196_CURRENT_uA_STEP;
 
-	return ((IS31FL319X_CONFIG2_CS_STEP_REF - step) &
-		IS31FL319X_CONFIG2_CS_MASK) <<
-		IS31FL319X_CONFIG2_CS_SHIFT; /* CS encoding */
+	return ((IS31FL3196_CONFIG2_CS_STEP_REF - step) &
+		IS31FL3196_CONFIG2_CS_MASK) <<
+		IS31FL3196_CONFIG2_CS_SHIFT; /* CS encoding */
 }
 
-static inline int is31fl319x_db_to_gain(u32 dezibel)
-{ /* round down to nearest supported value (range check done by caller) */
-	return dezibel / IS31FL319X_AUDIO_GAIN_DB_STEP;
+static inline int is31fl3196_db_to_gain(u32 dezibel)
+{
+	/* round down to nearest supported value (range check done by caller) */
+	return dezibel / IS31FL3196_AUDIO_GAIN_DB_STEP;
 }
 
-static int is31fl319x_probe(struct i2c_client *client,
-			    const struct i2c_device_id *id)
+static int is31fl319x_probe(struct i2c_client *client)
 {
 	struct is31fl319x_chip *is31;
 	struct device *dev = &client->dev;
 	int err;
 	int i = 0;
-	u32 aggregated_led_microamp = IS31FL319X_CURRENT_MAX;
+	u32 aggregated_led_microamp;
 
 	if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C))
 		return -EIO;
@@ -349,10 +510,13 @@ static int is31fl319x_probe(struct i2c_client *client,
 		return -ENOMEM;
 
 	mutex_init(&is31->lock);
+	err = devm_add_action(dev, (void (*)(void *))mutex_destroy, &is31->lock);
+	if (err)
+		return err;
 
-	err = is31fl319x_parse_dt(&client->dev, is31);
+	err = is31fl319x_parse_fw(&client->dev, is31);
 	if (err)
-		goto free_mutex;
+		return err;
 
 	if (is31->shutdown_gpio) {
 		gpiod_direction_output(is31->shutdown_gpio, 0);
@@ -361,37 +525,35 @@ static int is31fl319x_probe(struct i2c_client *client,
 	}
 
 	is31->client = client;
-	is31->regmap = devm_regmap_init_i2c(client, &regmap_config);
-	if (IS_ERR(is31->regmap)) {
-		dev_err(&client->dev, "failed to allocate register map\n");
-		err = PTR_ERR(is31->regmap);
-		goto free_mutex;
-	}
+	is31->regmap = devm_regmap_init_i2c(client, is31->cdef->is31fl319x_regmap_config);
+	if (IS_ERR(is31->regmap))
+		return dev_err_probe(dev, PTR_ERR(is31->regmap), "failed to allocate register map\n");
 
 	i2c_set_clientdata(client, is31);
 
 	/* check for write-reply from chip (we can't read any registers) */
-	err = regmap_write(is31->regmap, IS31FL319X_RESET, 0x00);
-	if (err < 0) {
-		dev_err(&client->dev, "no response from chip write: err = %d\n",
-			err);
-		err = -EIO; /* does not answer */
-		goto free_mutex;
-	}
+	err = regmap_write(is31->regmap, is31->cdef->reset_reg, 0x00);
+	if (err < 0)
+		return dev_err_probe(dev, err, "no response from chip write\n");
 
 	/*
 	 * Kernel conventions require per-LED led-max-microamp property.
 	 * But the chip does not allow to limit individual LEDs.
 	 * So we take minimum from all subnodes for safety of hardware.
 	 */
+	aggregated_led_microamp = is31->cdef->current_max;
 	for (i = 0; i < is31->cdef->num_leds; i++)
 		if (is31->leds[i].configured &&
 		    is31->leds[i].max_microamp < aggregated_led_microamp)
 			aggregated_led_microamp = is31->leds[i].max_microamp;
 
-	regmap_write(is31->regmap, IS31FL319X_CONFIG2,
-		     is31fl319x_microamp_to_cs(dev, aggregated_led_microamp) |
-		     is31fl319x_db_to_gain(is31->audio_gain_db));
+	if (is31->cdef->is_3196or3199)
+		regmap_write(is31->regmap, IS31FL3196_CONFIG2,
+			     is31fl3196_microamp_to_cs(dev, aggregated_led_microamp) |
+			     is31fl3196_db_to_gain(is31->audio_gain_db));
+	else
+		regmap_update_bits(is31->regmap, IS31FL3190_CURRENT, IS31FL3190_CURRENT_MASK,
+				   is31fl3190_microamp_to_cs(dev, aggregated_led_microamp));
 
 	for (i = 0; i < is31->cdef->num_leds; i++) {
 		struct is31fl319x_led *led = &is31->leds[i];
@@ -400,26 +562,14 @@ static int is31fl319x_probe(struct i2c_client *client,
 			continue;
 
 		led->chip = is31;
-		led->cdev.brightness_set_blocking = is31fl319x_brightness_set;
+		led->cdev.brightness_set_blocking = is31->cdef->brightness_set;
 
 		err = devm_led_classdev_register(&client->dev, &led->cdev);
 		if (err < 0)
-			goto free_mutex;
+			return err;
 	}
 
 	return 0;
-
-free_mutex:
-	mutex_destroy(&is31->lock);
-	return err;
-}
-
-static int is31fl319x_remove(struct i2c_client *client)
-{
-	struct is31fl319x_chip *is31 = i2c_get_clientdata(client);
-
-	mutex_destroy(&is31->lock);
-	return 0;
 }
 
 /*
@@ -432,6 +582,10 @@ static const struct i2c_device_id is31fl319x_id[] = {
 	{ "is31fl3193" },
 	{ "is31fl3196" },
 	{ "is31fl3199" },
+	{ "sn3190" },
+	{ "sn3191" },
+	{ "sn3193" },
+	{ "sn3196" },
 	{ "sn3199" },
 	{},
 };
@@ -440,10 +594,9 @@ MODULE_DEVICE_TABLE(i2c, is31fl319x_id);
 static struct i2c_driver is31fl319x_driver = {
 	.driver   = {
 		.name           = "leds-is31fl319x",
-		.of_match_table = of_match_ptr(of_is31fl319x_match),
+		.of_match_table = of_is31fl319x_match,
 	},
-	.probe    = is31fl319x_probe,
-	.remove   = is31fl319x_remove,
+	.probe_new = is31fl319x_probe,
 	.id_table = is31fl319x_id,
 };