diff options
| author | Vic Yang <victoryang@chromium.org> | 2013-04-22 14:53:01 +0800 |
|---|---|---|
| committer | ChromeBot <chrome-bot@google.com> | 2013-04-23 10:39:13 -0700 |
| commit | c6e5d592cbfe95bd9978e14aba30a5bb17c19d90 (patch) | |
| tree | c6f25e20c155c76744c2e98006cbfbba75c89b9f | |
| parent | 4d96bf649de38e989016fd9a467ab243ace436f7 (diff) | |
| download | chrome-ec-c6e5d592cbfe95bd9978e14aba30a5bb17c19d90.tar.gz | |
Add LP5562 functions to control engine execution state
This gives us better control over the execution state of lighting
engine.
BUG=chromium:233832
TEST=Build success
BRANCH=spring
Change-Id: Ibfa86be0eef2b7dff8495f770649577295d4cb6f
Signed-off-by: Vic Yang <victoryang@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/48773
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>
| -rw-r--r-- | common/lp5562.c | 22 | ||||
| -rw-r--r-- | include/lp5562.h | 10 |
2 files changed, 32 insertions, 0 deletions
diff --git a/common/lp5562.c b/common/lp5562.c index dc16a20f79..721be45d41 100644 --- a/common/lp5562.c +++ b/common/lp5562.c @@ -82,6 +82,15 @@ int lp5562_engine_control(int eng1, int eng2, int eng3) return lp5562_write(LP5562_REG_ENABLE, val); } +int lp5562_get_engine_state(int engine) +{ + int val; + + if (lp5562_read(LP5562_REG_ENABLE, &val)) + return 0xee; + return (val >> (6 - engine * 2)) & 0x3; +} + int lp5562_poweron(void) { int ret = 0; @@ -100,6 +109,19 @@ int lp5562_poweroff(void) return lp5562_write(LP5562_REG_ENABLE, 0x0); } +int lp5562_get_pc(int engine) +{ + int ret; + if (lp5562_read(LP5562_REG_ENG1_PC + engine - 1, &ret)) + return 0xee; + return ret; +} + +int lp5562_set_pc(int engine, int val) +{ + return lp5562_write(LP5562_REG_ENG1_PC + engine - 1, val); +} + /*****************************************************************************/ /* Console commands */ diff --git a/include/lp5562.h b/include/lp5562.h index f1a5af092c..f0d32d495e 100644 --- a/include/lp5562.h +++ b/include/lp5562.h @@ -39,6 +39,7 @@ #define LP5562_ENG_SEL_3 0x3 #define LP5562_ENG_HOLD 0x0 +#define LP5562_ENG_STEP 0x1 #define LP5562_ENG_RUN 0x2 /* Power on and initialize LP5562. */ @@ -62,4 +63,13 @@ int lp5562_engine_load(int engine, const uint8_t *program, int size); /* Control lighting engine execution state */ int lp5562_engine_control(int eng1, int eng2, int eng3); +/* Get engine execution state. Return 0xee on error. */ +int lp5562_get_engine_state(int engine); + +/* Get current program counter. Return 0xee on error. */ +int lp5562_get_pc(int engine); + +/* Set program counter */ +int lp5562_set_pc(int engine, int val); + #endif /* LP5562_H */ |