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leds: lp55xx: configure the clock detection

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Now LP55xx provides automatic clock detection API, lp55xx_is_extclk_used().
The clock configuration can be done by the driver itself.

(a) Concept
The default value is set by each driver with clock selection.
The internal clock selection bit is updated in case that the external clock
is not detected or clock rate is not 32KHz.

(b) Change on LP55xx platform data
The clock configuration is done automatically, so no need to define
'update_config' in the platform side.
Correlated information are removed in the documentations and header.

(c) Definitions moved from header to driver files
CONFIG register values are moved each driver, LP5521 and LP5562.
Not necessary definitions are removed also.

Signed-off-by: Milo(Woogyom) Kim <milo.kim@ti.com>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
This commit is contained in:
Kim, Milo
2013-03-20 17:37:04 -07:00
committed by Bryan Wu
parent 53b4192266
commit 81f2a5b4a0
5 changed files with 27 additions and 62 deletions
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19
Documentation/leds/leds-lp5521.txt
View File

@@ -81,22 +81,3 @@ static struct lp55xx_platform_data lp5521_platform_data = {
If the current is set to 0 in the platform data, that channel is
disabled and it is not visible in the sysfs.
The 'update_config' : CONFIG register (ADDR 08h)
This value is platform-specific data.
If update_config is not defined, the CONFIG register is set with
'LP5521_PWRSAVE_EN | LP5521_CP_MODE_AUTO | LP5521_R_TO_BATT'.
(Enable auto-powersave, set charge pump to auto, red to battery)
example of update_config :
#define LP5521_CONFIGS (LP5521_PWM_HF | LP5521_PWRSAVE_EN | \
LP5521_CP_MODE_AUTO | LP5521_R_TO_BATT | \
LP5521_CLK_INT)
static struct lp55xx_platform_data lp5521_pdata = {
.led_config = lp5521_led_config,
.num_channels = ARRAY_SIZE(lp5521_led_config),
.clock_mode = LP55XX_CLOCK_INT,
.update_config = LP5521_CONFIGS,
};

15
Documentation/leds/leds-lp5562.txt
View File

@@ -118,18 +118,3 @@ static struct lp55xx_platform_data lp5562_platform_data = {
If the current is set to 0 in the platform data, that channel is
disabled and it is not visible in the sysfs.
The 'update_config' : CONFIG register (ADDR 08h)
This value is platform-specific data.
If update_config is not defined, the CONFIG register is set with
'LP5562_PWRSAVE_EN | LP5562_CLK_AUTO'.
(Enable auto-powersave, set automatic clock source selection)
#define LP5562_CONFIGS (LP5562_PWM_HF | LP5562_PWRSAVE_EN | \
LP5562_CLK_SRC_EXT)
static struct lp55xx_platform_data lp5562_pdata = {
.led_config = lp5562_led_config,
.num_channels = ARRAY_SIZE(lp5562_led_config),
.update_config = LP5562_CONFIGS,
};