leds-lp55xx: use lp55xx common init function - post int

 LP5521/5523 chip configuration is replaced with lp55xx common function,
 lp55xx_post_init_device().

 Name change:
 lp5521/5523_configure() to lp5521/5523_post_init_device()
 These are called in init function.

 Register access function
 Argument type is changed from 'i2c_client' to 'lp55xx_chip'.
 Use exported R/W functions of lp55xx common driver.

 Temporary variables in lp5521/5523_init_device()
 These functions will be removed but temporary variables are needed for
 blocking build warnings - incompatible pointer.
Signed-off-by: Milo(Woogyom) Kim <milo.kim@ti.com>
Signed-off-by: Bryan Wu <cooloney@gmail.com>

drivers/leds/leds-lp5521.c

@@ -238,11 +238,9 @@ static int lp5521_set_led_current(struct lp5521_chip *chip, int led, u8 curr)
 		    curr);
 }
 
-static int lp5521_configure(struct i2c_client *client)
+static int lp5521_post_init_device(struct lp55xx_chip *chip)
 {
-	struct lp5521_chip *chip = i2c_get_clientdata(client);
 	int ret;
-	u8 cfg;
 	u8 val;
 
 	/*
@@ -251,13 +249,13 @@ static int lp5521_configure(struct i2c_client *client)
 	 * otherwise further access to the R G B channels in the
 	 * LP5521_REG_ENABLE register will not have any effect - strange!
 	 */
-	ret = lp5521_read(client, LP5521_REG_R_CURRENT, &val);
+	ret = lp55xx_read(chip, LP5521_REG_R_CURRENT, &val);
 	if (ret) {
-		dev_err(&client->dev, "error in resetting chip\n");
+		dev_err(&chip->cl->dev, "error in resetting chip\n");
 		return ret;
 	}
 	if (val != LP5521_REG_R_CURR_DEFAULT) {
-		dev_err(&client->dev,
+		dev_err(&chip->cl->dev,
 			"unexpected data in register (expected 0x%x got 0x%x)\n",
 			LP5521_REG_R_CURR_DEFAULT, val);
 		ret = -EINVAL;
@@ -266,22 +264,21 @@ static int lp5521_configure(struct i2c_client *client)
 	usleep_range(10000, 20000);
 
 	/* Set all PWMs to direct control mode */
-	ret = lp5521_write(client, LP5521_REG_OP_MODE, LP5521_CMD_DIRECT);
+	ret = lp55xx_write(chip, LP5521_REG_OP_MODE, LP5521_CMD_DIRECT);
 
-	cfg = chip->pdata->update_config ?
+	val = chip->pdata->update_config ?
 		: (LP5521_PWRSAVE_EN | LP5521_CP_MODE_AUTO | LP5521_R_TO_BATT);
-	ret = lp5521_write(client, LP5521_REG_CONFIG, cfg);
+	ret = lp55xx_write(chip, LP5521_REG_CONFIG, val);
 	if (ret)
 		return ret;
 
 	/* Initialize all channels PWM to zero -> leds off */
-	lp5521_write(client, LP5521_REG_R_PWM, 0);
-	lp5521_write(client, LP5521_REG_G_PWM, 0);
-	lp5521_write(client, LP5521_REG_B_PWM, 0);
+	lp55xx_write(chip, LP5521_REG_R_PWM, 0);
+	lp55xx_write(chip, LP5521_REG_G_PWM, 0);
+	lp55xx_write(chip, LP5521_REG_B_PWM, 0);
 
 	/* Set engines are set to run state when OP_MODE enables engines */
-	ret = lp5521_write(client, LP5521_REG_ENABLE,
-			LP5521_ENABLE_RUN_PROGRAM);
+	ret = lp55xx_write(chip, LP5521_REG_ENABLE, LP5521_ENABLE_RUN_PROGRAM);
 	if (ret)
 		return ret;
 
@@ -696,9 +693,10 @@ static void lp5521_deinit_device(struct lp5521_chip *chip);
 static int lp5521_init_device(struct lp5521_chip *chip)
 {
 	struct i2c_client *client = chip->client;
+	struct lp55xx_chip *temp;
 	int ret;
 
-	ret = lp5521_configure(client);
+	ret = lp5521_post_init_device(temp);
 	if (ret < 0) {
 		dev_err(&client->dev, "error configuring chip\n");
 		goto err_config;
@@ -828,6 +826,7 @@ static struct lp55xx_device_config lp5521_cfg = {
 		.addr = LP5521_REG_ENABLE,
 		.val  = LP5521_ENABLE_DEFAULT,
 	},
+	.post_init_device   = lp5521_post_init_device,
 };
 
 static int lp5521_probe(struct i2c_client *client,

drivers/leds/leds-lp5523.c

@@ -181,18 +181,18 @@ static int lp5523_read(struct i2c_client *client, u8 reg, u8 *buf)
 	return 0;
 }
 
-static int lp5523_configure(struct i2c_client *client)
+static int lp5523_post_init_device(struct lp55xx_chip *chip)
 {
-	int ret = 0;
+	int ret;
 
-	ret = lp5523_write(client, LP5523_REG_ENABLE, LP5523_ENABLE);
+	ret = lp55xx_write(chip, LP5523_REG_ENABLE, LP5523_ENABLE);
 	if (ret)
 		return ret;
 
 	/* Chip startup time is 500 us, 1 - 2 ms gives some margin */
 	usleep_range(1000, 2000);
 
-	ret = lp5523_write(client, LP5523_REG_CONFIG,
+	ret = lp55xx_write(chip, LP5523_REG_CONFIG,
 			    LP5523_AUTO_INC | LP5523_PWR_SAVE |
 			    LP5523_CP_AUTO | LP5523_AUTO_CLK |
 			    LP5523_PWM_PWR_SAVE);
@@ -200,11 +200,11 @@ static int lp5523_configure(struct i2c_client *client)
 		return ret;
 
 	/* turn on all leds */
-	ret = lp5523_write(client, LP5523_REG_ENABLE_LEDS_MSB, 0x01);
+	ret = lp55xx_write(chip, LP5523_REG_ENABLE_LEDS_MSB, 0x01);
 	if (ret)
 		return ret;
 
-	return lp5523_write(client, LP5523_REG_ENABLE_LEDS_LSB, 0xff);
+	return lp55xx_write(chip, LP5523_REG_ENABLE_LEDS_LSB, 0xff);
 }
 
 static int lp5523_set_engine_mode(struct lp5523_engine *engine, u8 mode)
@@ -888,9 +888,10 @@ static void lp5523_deinit_device(struct lp5523_chip *chip);
 static int lp5523_init_device(struct lp5523_chip *chip)
 {
 	struct i2c_client *client = chip->client;
+	struct lp55xx_chip *temp;
 	int ret;
 
-	ret = lp5523_configure(client);
+	ret = lp5523_post_init_device(temp);
 	if (ret < 0) {
 		dev_err(&client->dev, "error configuring chip\n");
 		goto err_config;
@@ -923,6 +924,7 @@ static struct lp55xx_device_config lp5523_cfg = {
 		.addr = LP5523_REG_ENABLE,
 		.val  = LP5523_ENABLE,
 	},
+	.post_init_device   = lp5523_post_init_device,
 };
 
 static int lp5523_probe(struct i2c_client *client,

drivers/leds/leds-lp55xx-common.c

@@ -53,6 +53,16 @@ static int lp55xx_detect_device(struct lp55xx_chip *chip)
 	return 0;
 }
 
+static int lp55xx_post_init_device(struct lp55xx_chip *chip)
+{
+	struct lp55xx_device_config *cfg = chip->cfg;
+
+	if (!cfg->post_init_device)
+		return 0;
+
+	return cfg->post_init_device(chip);
+}
+
 int lp55xx_write(struct lp55xx_chip *chip, u8 reg, u8 val)
 {
 	return i2c_smbus_write_byte_data(chip->cl, reg, val);
@@ -132,6 +142,11 @@ int lp55xx_init_device(struct lp55xx_chip *chip)
 		goto err;
 	}
 
+	/* chip specific initialization */
+	ret = lp55xx_post_init_device(chip);
+
+	return 0;
+
 err:
 	return ret;
 }

drivers/leds/leds-lp55xx-common.h

@@ -32,10 +32,14 @@ struct lp55xx_reg {
  * struct lp55xx_device_config
  * @reset              : Chip specific reset command
  * @enable             : Chip specific enable command
+ * @post_init_device   : Chip specific initialization code
  */
 struct lp55xx_device_config {
 	const struct lp55xx_reg reset;
 	const struct lp55xx_reg enable;
+
+	/* define if the device has specific initialization process */
+	int (*post_init_device) (struct lp55xx_chip *chip);
 };
 
 /*