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Date: Wed, 12 Dec 2012 14:02:36 +0000
From: "Kim, Milo" <Milo.Kim@...com>
To: Bryan Wu <cooloney@...il.com>
CC: "linux-leds@...r.kernel.org" <linux-leds@...r.kernel.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: [PATCH 23/33] leds-lp55xx: code refactoring on selftest function
LP5521 and LP5523 have a selftest function which is run via the sysfs.
Use lp55xx driver data and r/w functions rather than lp5521/5523 private data
and functions.
Additionally, if-statements are changed for code simplicity.
Signed-off-by: Milo(Woogyom) Kim <milo.kim@...com>
---
drivers/leds/leds-lp5521.c | 18 +++++++++++-------
drivers/leds/leds-lp5523.c | 42 ++++++++++++++++++++----------------------
2 files changed, 31 insertions(+), 29 deletions(-)
diff --git a/drivers/leds/leds-lp5521.c b/drivers/leds/leds-lp5521.c
index c683bf5..9d37cb4 100644
--- a/drivers/leds/leds-lp5521.c
+++ b/drivers/leds/leds-lp5521.c
@@ -373,19 +373,23 @@ static int lp5521_post_init_device(struct lp55xx_chip *chip)
return 0;
}
-static int lp5521_run_selftest(struct lp5521_chip *chip, char *buf)
+static int lp5521_run_selftest(struct lp55xx_chip *chip, char *buf)
{
+ struct lp55xx_platform_data *pdata = chip->pdata;
int ret;
u8 status;
- ret = lp5521_read(chip->client, LP5521_REG_STATUS, &status);
+ ret = lp55xx_read(chip, LP5521_REG_STATUS, &status);
if (ret < 0)
return ret;
+ if (pdata->clock_mode != LP55XX_CLOCK_EXT)
+ return 0;
+
/* Check that ext clock is really in use if requested */
- if (chip->pdata && chip->pdata->clock_mode == LP5521_CLOCK_EXT)
- if ((status & LP5521_EXT_CLK_USED) == 0)
- return -EIO;
+ if ((status & LP5521_EXT_CLK_USED) == 0)
+ return -EIO;
+
return 0;
}
@@ -405,8 +409,8 @@ static ssize_t lp5521_selftest(struct device *dev,
struct device_attribute *attr,
char *buf)
{
- struct i2c_client *client = to_i2c_client(dev);
- struct lp5521_chip *chip = i2c_get_clientdata(client);
+ struct lp55xx_led *led = i2c_get_clientdata(to_i2c_client(dev));
+ struct lp55xx_chip *chip = led->chip;
int ret;
mutex_lock(&chip->lock);
diff --git a/drivers/leds/leds-lp5523.c b/drivers/leds/leds-lp5523.c
index d58b06c..a0b49fc 100644
--- a/drivers/leds/leds-lp5523.c
+++ b/drivers/leds/leds-lp5523.c
@@ -376,35 +376,35 @@ static ssize_t lp5523_selftest(struct device *dev,
struct device_attribute *attr,
char *buf)
{
- struct i2c_client *client = to_i2c_client(dev);
- struct lp5523_chip *chip = i2c_get_clientdata(client);
+ struct lp55xx_led *led = i2c_get_clientdata(to_i2c_client(dev));
+ struct lp55xx_chip *chip = led->chip;
+ struct lp55xx_platform_data *pdata = chip->pdata;
int i, ret, pos = 0;
- int led = 0;
u8 status, adc, vdd;
mutex_lock(&chip->lock);
- ret = lp5523_read(chip->client, LP5523_REG_STATUS, &status);
+ ret = lp55xx_read(chip, LP5523_REG_STATUS, &status);
if (ret < 0)
goto fail;
/* Check that ext clock is really in use if requested */
- if ((chip->pdata) && (chip->pdata->clock_mode == LP5523_CLOCK_EXT))
+ if (pdata->clock_mode == LP55XX_CLOCK_EXT) {
if ((status & LP5523_EXT_CLK_USED) == 0)
goto fail;
+ }
/* Measure VDD (i.e. VBAT) first (channel 16 corresponds to VDD) */
- lp5523_write(chip->client, LP5523_REG_LED_TEST_CTRL,
- LP5523_EN_LEDTEST | 16);
+ lp55xx_write(chip, LP5523_REG_LED_TEST_CTRL, LP5523_EN_LEDTEST | 16);
usleep_range(3000, 6000); /* ADC conversion time is typically 2.7 ms */
- ret = lp5523_read(chip->client, LP5523_REG_STATUS, &status);
+ ret = lp55xx_read(chip, LP5523_REG_STATUS, &status);
if (ret < 0)
goto fail;
if (!(status & LP5523_LEDTEST_DONE))
usleep_range(3000, 6000); /* Was not ready. Wait little bit */
- ret = lp5523_read(chip->client, LP5523_REG_LED_TEST_ADC, &vdd);
+ ret = lp55xx_read(chip, LP5523_REG_LED_TEST_ADC, &vdd);
if (ret < 0)
goto fail;
@@ -412,41 +412,39 @@ static ssize_t lp5523_selftest(struct device *dev,
for (i = 0; i < LP5523_MAX_LEDS; i++) {
/* Skip non-existing channels */
- if (chip->pdata->led_config[i].led_current == 0)
+ if (pdata->led_config[i].led_current == 0)
continue;
/* Set default current */
- lp5523_write(chip->client,
- LP5523_REG_LED_CURRENT_BASE + i,
- chip->pdata->led_config[i].led_current);
+ lp55xx_write(chip, LP5523_REG_LED_CURRENT_BASE + i,
+ pdata->led_config[i].led_current);
- lp5523_write(chip->client, LP5523_REG_LED_PWM_BASE + i, 0xff);
+ lp55xx_write(chip, LP5523_REG_LED_PWM_BASE + i, 0xff);
/* let current stabilize 2 - 4ms before measurements start */
usleep_range(2000, 4000);
- lp5523_write(chip->client,
- LP5523_REG_LED_TEST_CTRL,
+ lp55xx_write(chip, LP5523_REG_LED_TEST_CTRL,
LP5523_EN_LEDTEST | i);
/* ADC conversion time is 2.7 ms typically */
usleep_range(3000, 6000);
- ret = lp5523_read(chip->client, LP5523_REG_STATUS, &status);
+ ret = lp55xx_read(chip, LP5523_REG_STATUS, &status);
if (ret < 0)
goto fail;
if (!(status & LP5523_LEDTEST_DONE))
usleep_range(3000, 6000);/* Was not ready. Wait. */
- ret = lp5523_read(chip->client, LP5523_REG_LED_TEST_ADC, &adc);
+
+ ret = lp55xx_read(chip, LP5523_REG_LED_TEST_ADC, &adc);
if (ret < 0)
goto fail;
if (adc >= vdd || adc < LP5523_ADC_SHORTCIRC_LIM)
pos += sprintf(buf + pos, "LED %d FAIL\n", i);
- lp5523_write(chip->client, LP5523_REG_LED_PWM_BASE + i, 0x00);
+ lp55xx_write(chip, LP5523_REG_LED_PWM_BASE + i, 0x00);
/* Restore current */
- lp5523_write(chip->client,
- LP5523_REG_LED_CURRENT_BASE + i,
- chip->leds[led].led_current);
+ lp55xx_write(chip, LP5523_REG_LED_CURRENT_BASE + i,
+ led->led_current);
led++;
}
if (pos == 0)
--
1.7.9.5
Best Regards,
Milo
--
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