From 011af7bc7cd188a0310e2d26cdc2cc5d90148b0c Mon Sep 17 00:00:00 2001 From: "Kim, Milo" Date: Fri, 23 Mar 2012 15:02:09 -0700 Subject: drivers/leds/leds-lp5521.c: support led pattern data The lp5521 has autonomous operation mode without external control. Using lp5521_platform_data, various led patterns can be configurable. For supporting this feature, new functions and device attribute are added. Structure of lp5521_led_pattern: 3 channels are supported - red, green and blue. Pattern(s) of each channel and numbers of pattern(s) are defined in the pla= tform data. Pattern data are hexa codes which include pattern commands such like set pwm, wait, ramp up/down, branch and so on. Pattern mode functions: * lp5521_clear_program_memory Before running new led pattern, program memory should be cleared. * lp5521_write_program_memory Pattern data updated in the program memory via the i2c. * lp5521_get_pattern Get pattern from predefined in the platform data. * lp5521_run_led_pattern Stop current pattern or run new pattern. Transition time is required between different operation mode. Device attribute - 'led_pattern': To load specific led pattern, new device attribute is added. When the lp5521 driver is unloaded, stop current led pattern mode. Documentation updated : description about how to define the led patterns and example. [akpm@linux-foundation.org: checkpatch fixes] Signed-off-by: Milo(Woogyom) Kim Acked-by: Linus Walleij Cc: Arun MURTHY Cc: Srinidhi Kasagar Cc: Richard Purdie Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/leds-lp5521.h | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'include/linux/leds-lp5521.h') diff --git a/include/linux/leds-lp5521.h b/include/linux/leds-lp5521.h index e9ab583cac3..3f071ec019b 100644 --- a/include/linux/leds-lp5521.h +++ b/include/linux/leds-lp5521.h @@ -32,6 +32,15 @@ struct lp5521_led_config { u8 max_current; }; +struct lp5521_led_pattern { + u8 *r; + u8 *g; + u8 *b; + u8 size_r; + u8 size_g; + u8 size_b; +}; + #define LP5521_CLOCK_AUTO 0 #define LP5521_CLOCK_INT 1 #define LP5521_CLOCK_EXT 2 @@ -57,6 +66,8 @@ struct lp5521_platform_data { void (*enable)(bool state); const char *label; u8 update_config; + struct lp5521_led_pattern *patterns; + int num_patterns; }; #endif /* __LINUX_LP5521_H */ -- cgit v1.2.3-70-g09d2