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-rw-r--r--drivers/leds/leds-lp5521.c26
-rw-r--r--drivers/leds/leds-lp5523.c23
-rw-r--r--drivers/leds/leds-lp55xx-common.c22
-rw-r--r--drivers/leds/leds-lp55xx-common.h20
4 files changed, 63 insertions, 28 deletions
diff --git a/drivers/leds/leds-lp5521.c b/drivers/leds/leds-lp5521.c
index 124ce80fa115..e1f1dfcd1547 100644
--- a/drivers/leds/leds-lp5521.c
+++ b/drivers/leds/leds-lp5521.c
@@ -98,6 +98,9 @@
/* Pattern Mode */
#define PATTERN_OFF 0
+/* Reset register value */
+#define LP5521_RESET 0xFF
+
struct lp5521_engine {
int id;
u8 mode;
@@ -709,26 +712,12 @@ static void lp5521_unregister_sysfs(struct i2c_client *client)
&lp5521_led_attribute_group);
}
-static void lp5521_reset_device(struct lp5521_chip *chip)
-{
- struct i2c_client *client = chip->client;
-
- lp5521_write(client, LP5521_REG_RESET, 0xff);
-}
-
static void lp5521_deinit_device(struct lp5521_chip *chip);
static int lp5521_init_device(struct lp5521_chip *chip)
{
struct i2c_client *client = chip->client;
int ret;
- lp5521_reset_device(chip);
-
- usleep_range(10000, 20000); /*
- * Exact value is not available. 10 - 20ms
- * appears to be enough for reset.
- */
-
ret = lp5521_detect(client);
if (ret) {
dev_err(&client->dev, "Chip not found\n");
@@ -856,6 +845,14 @@ static void lp5521_unregister_leds(struct lp5521_chip *chip)
}
}
+/* Chip specific configurations */
+static struct lp55xx_device_config lp5521_cfg = {
+ .reset = {
+ .addr = LP5521_REG_RESET,
+ .val = LP5521_RESET,
+ },
+};
+
static int lp5521_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
@@ -881,6 +878,7 @@ 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 8e602047ce35..00547783db77 100644
--- a/drivers/leds/leds-lp5523.c
+++ b/drivers/leds/leds-lp5523.c
@@ -87,6 +87,7 @@
#define LP5523_AUTO_CLK 0x02
#define LP5523_EN_LEDTEST 0x80
#define LP5523_LEDTEST_DONE 0x80
+#define LP5523_RESET 0xFF
#define LP5523_DEFAULT_CURRENT 50 /* microAmps */
#define LP5523_PROGRAM_LENGTH 32 /* in bytes */
@@ -900,25 +901,12 @@ static void lp5523_unregister_leds(struct lp5523_chip *chip)
}
}
-static void lp5523_reset_device(struct lp5523_chip *chip)
-{
- struct i2c_client *client = chip->client;
-
- lp5523_write(client, LP5523_REG_RESET, 0xff);
-}
-
static void lp5523_deinit_device(struct lp5523_chip *chip);
static int lp5523_init_device(struct lp5523_chip *chip)
{
struct i2c_client *client = chip->client;
int ret;
- lp5523_reset_device(chip);
-
- usleep_range(10000, 20000); /*
- * Exact value is not available. 10 - 20ms
- * appears to be enough for reset.
- */
ret = lp5523_detect(client);
if (ret)
goto err;
@@ -947,6 +935,14 @@ static void lp5523_deinit_device(struct lp5523_chip *chip)
pdata->release_resources();
}
+/* Chip specific configurations */
+static struct lp55xx_device_config lp5523_cfg = {
+ .reset = {
+ .addr = LP5523_REG_RESET,
+ .val = LP5523_RESET,
+ },
+};
+
static int lp5523_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
@@ -972,6 +968,7 @@ 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-lp55xx-common.c b/drivers/leds/leds-lp55xx-common.c
index 05a854c0d9b2..bbf2bbf03807 100644
--- a/drivers/leds/leds-lp55xx-common.c
+++ b/drivers/leds/leds-lp55xx-common.c
@@ -20,6 +20,16 @@
#include "leds-lp55xx-common.h"
+static void lp55xx_reset_device(struct lp55xx_chip *chip)
+{
+ struct lp55xx_device_config *cfg = chip->cfg;
+ u8 addr = cfg->reset.addr;
+ u8 val = cfg->reset.val;
+
+ /* no error checking here because no ACK from the device after reset */
+ lp55xx_write(chip, addr, val);
+}
+
int lp55xx_write(struct lp55xx_chip *chip, u8 reg, u8 val)
{
return i2c_smbus_write_byte_data(chip->cl, reg, val);
@@ -58,14 +68,16 @@ EXPORT_SYMBOL_GPL(lp55xx_update_bits);
int lp55xx_init_device(struct lp55xx_chip *chip)
{
struct lp55xx_platform_data *pdata;
+ struct lp55xx_device_config *cfg;
struct device *dev = &chip->cl->dev;
int ret = 0;
WARN_ON(!chip);
pdata = chip->pdata;
+ cfg = chip->cfg;
- if (!pdata)
+ if (!pdata || !cfg)
return -EINVAL;
if (pdata->setup_resources) {
@@ -83,6 +95,14 @@ int lp55xx_init_device(struct lp55xx_chip *chip)
usleep_range(1000, 2000); /* 500us abs min. */
}
+ lp55xx_reset_device(chip);
+
+ /*
+ * Exact value is not available. 10 - 20ms
+ * appears to be enough for reset.
+ */
+ usleep_range(10000, 20000);
+
err:
return ret;
}
diff --git a/drivers/leds/leds-lp55xx-common.h b/drivers/leds/leds-lp55xx-common.h
index 09d1882ce58e..a73ee0b9a0bd 100644
--- a/drivers/leds/leds-lp55xx-common.h
+++ b/drivers/leds/leds-lp55xx-common.h
@@ -19,17 +19,37 @@ struct lp55xx_led;
struct lp55xx_chip;
/*
+ * struct lp55xx_reg
+ * @addr : Register address
+ * @val : Register value
+ */
+struct lp55xx_reg {
+ u8 addr;
+ u8 val;
+};
+
+/*
+ * struct lp55xx_device_config
+ * @reset : Chip specific reset command
+ */
+struct lp55xx_device_config {
+ const struct lp55xx_reg reset;
+};
+
+/*
* struct lp55xx_chip
* @cl : I2C communication for access registers
* @pdata : Platform specific data
* @lock : Lock for user-space interface
* @num_leds : Number of registered LEDs
+ * @cfg : Device specific configuration data
*/
struct lp55xx_chip {
struct i2c_client *cl;
struct lp55xx_platform_data *pdata;
struct mutex lock; /* lock for user-space interface */
int num_leds;
+ struct lp55xx_device_config *cfg;
};
/*
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