This patch organizes the define of adc to multiple partitions and adds the new bit field define for ast2600 driver.
Signed-off-by: Billy Tsai <billy_t...@aspeedtech.com> --- drivers/iio/adc/aspeed_adc.c | 42 ++++++++++++++++++++++++++++++++---- 1 file changed, 38 insertions(+), 4 deletions(-) diff --git a/drivers/iio/adc/aspeed_adc.c b/drivers/iio/adc/aspeed_adc.c index 1e5375235cfe..ae400c4d6d40 100644 --- a/drivers/iio/adc/aspeed_adc.c +++ b/drivers/iio/adc/aspeed_adc.c @@ -21,23 +21,57 @@ #include <linux/iio/driver.h> #include <linux/iopoll.h> +/********************************************************** + * ADC feature define + *********************************************************/ #define ASPEED_RESOLUTION_BITS 10 #define ASPEED_CLOCKS_PER_SAMPLE 12 +/********************************************************** + * ADC HW register offset define + *********************************************************/ #define ASPEED_REG_ENGINE_CONTROL 0x00 #define ASPEED_REG_INTERRUPT_CONTROL 0x04 #define ASPEED_REG_VGA_DETECT_CONTROL 0x08 #define ASPEED_REG_CLOCK_CONTROL 0x0C +#define ASPEED_REG_COMPENSATION_TRIM 0xC4 #define ASPEED_REG_MAX 0xC0 +/********************************************************** + * ADC register Bit field + *********************************************************/ +/*ENGINE_CONTROL */ +/* [0] */ +#define ASPEED_ENGINE_ENABLE BIT(0) +/* [3:1] */ #define ASPEED_OPERATION_MODE_POWER_DOWN (0x0 << 1) #define ASPEED_OPERATION_MODE_STANDBY (0x1 << 1) #define ASPEED_OPERATION_MODE_NORMAL (0x7 << 1) - -#define ASPEED_ENGINE_ENABLE BIT(0) - +/* [4] */ +#define ASPEED_CTRL_COMPENSATION BIT(4) +/* [5] */ +#define ASPEED_AUTOPENSATING BIT(5) +/* [7:6] */ +#define ASPEED_REF_VOLTAGE_2500mV (0 << 6) +#define ASPEED_REF_VOLTAGE_1200mV (1 << 6) +#define ASPEED_REF_VOLTAGE_EXT_HIGH (2 << 6) +#define ASPEED_REF_VOLTAGE_EXT_LOW (3 << 6) +#define ASPEED_BATTERY_SENSING_VOL_DIVIDE_2_3 (0 << 6) +#define ASPEED_BATTERY_SENSING_VOL_DIVIDE_1_3 (1 << 6) +/* [8] */ #define ASPEED_ADC_CTRL_INIT_RDY BIT(8) - +/* [12] */ +#define ASPEED_ADC_CH7_VOLTAGE_NORMAL (0 << 12) +#define ASPEED_ADC_CH7_VOLTAGE_BATTERY (1 << 12) +/* [13] */ +#define ASPEED_ADC_EN_BATTERY_SENSING BIT(13) +/* [31:16] */ +#define ASPEED_ADC_CTRL_CH_EN(n) (1 << (16 + n)) +#define ASPEED_ADC_CTRL_CH_EN_ALL GENMASK(31, 16) + +/********************************************************** + * Software setting + *********************************************************/ #define ASPEED_ADC_INIT_POLLING_TIME 500 #define ASPEED_ADC_INIT_TIMEOUT 500000 -- 2.17.1
