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 <milo.kim@ti.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Cc: Arun MURTHY <arun.murthy@stericsson.com>
Cc: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/include/linux/leds-lp5521.h b/include/linux/leds-lp5521.h
index e9ab583..3f071ec 100644
--- a/include/linux/leds-lp5521.h
+++ b/include/linux/leds-lp5521.h
@@ -32,6 +32,15 @@
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 @@
void (*enable)(bool state);
const char *label;
u8 update_config;
+ struct lp5521_led_pattern *patterns;
+ int num_patterns;
};
#endif /* __LINUX_LP5521_H */