diff options
Diffstat (limited to 'driver/als_tcs3400.c')
| -rw-r--r-- | driver/als_tcs3400.c | 36 |
1 files changed, 30 insertions, 6 deletions
diff --git a/driver/als_tcs3400.c b/driver/als_tcs3400.c index da7994e023..5e9c53e784 100644 --- a/driver/als_tcs3400.c +++ b/driver/als_tcs3400.c @@ -9,6 +9,7 @@ #include "common.h" #include "console.h" #include "driver/als_tcs3400.h" +#include "hooks.h" #include "hwtimer.h" #include "i2c.h" #include "math_util.h" @@ -32,12 +33,37 @@ static inline int tcs3400_i2c_write8(const struct motion_sensor_t *s, return i2c_write8(s->port, s->addr, reg, data); } +static void tcs3400_read_deferred(void) +{ + task_set_event(TASK_ID_MOTIONSENSE, CONFIG_ALS_TCS3400_INT_EVENT, 0); +} +DECLARE_DEFERRED(tcs3400_read_deferred); + +/* convert ATIME register to integration time, in microseconds */ +static int tcs3400_get_integration_time(int atime) +{ + return 2780 * (256 - atime); +} + static int tcs3400_read(const struct motion_sensor_t *s, intv3_t v) { int ret; /* Enable power, ADC, and interrupt to start cycle */ ret = tcs3400_i2c_write8(s, TCS_I2C_ENABLE, TCS3400_MODE_COLLECTING); + if (ret) + return ret; + + if (IS_ENABLED(CONFIG_ALS_TCS3400_EMULATED_IRQ_EVENT)) { + int atime; + + ret = tcs3400_i2c_read8(s, TCS_I2C_ATIME, &atime); + if (ret) + return ret; + + hook_call_deferred(&tcs3400_read_deferred_data, + tcs3400_get_integration_time(atime)); + } /* * If write succeeded, we've started the read process, but can't @@ -45,10 +71,7 @@ static int tcs3400_read(const struct motion_sensor_t *s, intv3_t v) * to inform upper level that read data process is under way and data * will be delivered when available. */ - if (ret == EC_SUCCESS) - ret = EC_RES_IN_PROGRESS; - - return ret; + return EC_RES_IN_PROGRESS; } static int tcs3400_rgb_read(const struct motion_sensor_t *s, intv3_t v) @@ -223,8 +246,9 @@ static int tcs3400_irq_handler(struct motion_sensor_t *s, uint32_t *event) return ret; if ((status & TCS_I2C_STATUS_RGBC_VALID) || - ((status & TCS_I2C_STATUS_ALS_IRQ) && - (status & TCS_I2C_STATUS_ALS_VALID))) { + ((status & TCS_I2C_STATUS_ALS_IRQ) && + (status & TCS_I2C_STATUS_ALS_VALID)) || + IS_ENABLED(CONFIG_ALS_TCS3400_EMULATED_IRQ_EVENT)) { ret = tcs3400_post_events(s, last_interrupt_timestamp); if (ret) return ret; |