diff options
Diffstat (limited to 'drivers/iio')
| -rw-r--r-- | drivers/iio/adc/axp20x_adc.c | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/drivers/iio/adc/axp20x_adc.c b/drivers/iio/adc/axp20x_adc.c index 39680539a701..7cdb8bc8cde6 100644 --- a/drivers/iio/adc/axp20x_adc.c +++ b/drivers/iio/adc/axp20x_adc.c @@ -35,8 +35,13 @@ #define AXP20X_GPIO10_IN_RANGE_GPIO1_VAL(x) (((x) & BIT(0)) << 1) #define AXP20X_ADC_RATE_MASK GENMASK(7, 6) +#define AXP813_V_I_ADC_RATE_MASK GENMASK(5, 4) +#define AXP813_ADC_RATE_MASK (AXP20X_ADC_RATE_MASK | AXP813_V_I_ADC_RATE_MASK) #define AXP20X_ADC_RATE_HZ(x) ((ilog2((x) / 25) << 6) & AXP20X_ADC_RATE_MASK) #define AXP22X_ADC_RATE_HZ(x) ((ilog2((x) / 100) << 6) & AXP20X_ADC_RATE_MASK) +#define AXP813_TS_GPIO0_ADC_RATE_HZ(x) AXP20X_ADC_RATE_HZ(x) +#define AXP813_V_I_ADC_RATE_HZ(x) ((ilog2((x) / 100) << 4) & AXP813_V_I_ADC_RATE_MASK) +#define AXP813_ADC_RATE_HZ(x) (AXP20X_ADC_RATE_HZ(x) | AXP813_V_I_ADC_RATE_HZ(x)) #define AXP20X_ADC_CHANNEL(_channel, _name, _type, _reg) \ { \ @@ -95,6 +100,12 @@ enum axp22x_adc_channel_i { AXP22X_BATT_DISCHRG_I, }; +enum axp813_adc_channel_v { + AXP813_TS_IN = 0, + AXP813_GPIO0_V, + AXP813_BATT_V, +}; + static struct iio_map axp20x_maps[] = { { .consumer_dev_name = "axp20x-usb-power-supply", @@ -197,6 +208,25 @@ static const struct iio_chan_spec axp22x_adc_channels[] = { AXP20X_BATT_DISCHRG_I_H), }; +static const struct iio_chan_spec axp813_adc_channels[] = { + { + .type = IIO_TEMP, + .address = AXP22X_PMIC_TEMP_H, + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | + BIT(IIO_CHAN_INFO_SCALE) | + BIT(IIO_CHAN_INFO_OFFSET), + .datasheet_name = "pmic_temp", + }, + AXP20X_ADC_CHANNEL(AXP813_GPIO0_V, "gpio0_v", IIO_VOLTAGE, + AXP288_GP_ADC_H), + AXP20X_ADC_CHANNEL(AXP813_BATT_V, "batt_v", IIO_VOLTAGE, + AXP20X_BATT_V_H), + AXP20X_ADC_CHANNEL(AXP22X_BATT_CHRG_I, "batt_chrg_i", IIO_CURRENT, + AXP20X_BATT_CHRG_I_H), + AXP20X_ADC_CHANNEL(AXP22X_BATT_DISCHRG_I, "batt_dischrg_i", IIO_CURRENT, + AXP20X_BATT_DISCHRG_I_H), +}; + static int axp20x_adc_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int *val) { @@ -243,6 +273,18 @@ static int axp22x_adc_raw(struct iio_dev *indio_dev, return IIO_VAL_INT; } +static int axp813_adc_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, int *val) +{ + struct axp20x_adc_iio *info = iio_priv(indio_dev); + + *val = axp20x_read_variable_width(info->regmap, chan->address, 12); + if (*val < 0) + return *val; + + return IIO_VAL_INT; +} + static int axp20x_adc_scale_voltage(int channel, int *val, int *val2) { switch (channel) { @@ -273,6 +315,24 @@ static int axp20x_adc_scale_voltage(int channel, int *val, int *val2) } } +static int axp813_adc_scale_voltage(int channel, int *val, int *val2) +{ + switch (channel) { + case AXP813_GPIO0_V: + *val = 0; + *val2 = 800000; + return IIO_VAL_INT_PLUS_MICRO; + + case AXP813_BATT_V: + *val = 1; + *val2 = 100000; + return IIO_VAL_INT_PLUS_MICRO; + + default: + return -EINVAL; + } +} + static int axp20x_adc_scale_current(int channel, int *val, int *val2) { switch (channel) { @@ -342,6 +402,26 @@ static int axp22x_adc_scale(struct iio_chan_spec const *chan, int *val, } } +static int axp813_adc_scale(struct iio_chan_spec const *chan, int *val, + int *val2) +{ + switch (chan->type) { + case IIO_VOLTAGE: + return axp813_adc_scale_voltage(chan->channel, val, val2); + + case IIO_CURRENT: + *val = 1; + return IIO_VAL_INT; + + case IIO_TEMP: + *val = 100; + return IIO_VAL_INT; + + default: + return -EINVAL; + } +} + static int axp20x_adc_offset_voltage(struct iio_dev *indio_dev, int channel, int *val) { @@ -425,6 +505,26 @@ static int axp22x_read_raw(struct iio_dev *indio_dev, } } +static int axp813_read_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, int *val, + int *val2, long mask) +{ + switch (mask) { + case IIO_CHAN_INFO_OFFSET: + *val = -2667; + return IIO_VAL_INT; + + case IIO_CHAN_INFO_SCALE: + return axp813_adc_scale(chan, val, val2); + + case IIO_CHAN_INFO_RAW: + return axp813_adc_raw(indio_dev, chan, val); + + default: + return -EINVAL; + } +} + static int axp20x_write_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int val, int val2, long mask) @@ -470,6 +570,10 @@ static const struct iio_info axp22x_adc_iio_info = { .read_raw = axp22x_read_raw, }; +static const struct iio_info axp813_adc_iio_info = { + .read_raw = axp813_read_raw, +}; + static int axp20x_adc_rate(struct axp20x_adc_iio *info, int rate) { return regmap_update_bits(info->regmap, AXP20X_ADC_RATE, @@ -484,6 +588,13 @@ static int axp22x_adc_rate(struct axp20x_adc_iio *info, int rate) AXP22X_ADC_RATE_HZ(rate)); } +static int axp813_adc_rate(struct axp20x_adc_iio *info, int rate) +{ + return regmap_update_bits(info->regmap, AXP813_ADC_RATE, + AXP813_ADC_RATE_MASK, + AXP813_ADC_RATE_HZ(rate)); +} + struct axp_data { const struct iio_info *iio_info; int num_channels; @@ -515,9 +626,20 @@ static const struct axp_data axp22x_data = { .maps = axp22x_maps, }; +static const struct axp_data axp813_data = { + .iio_info = &axp813_adc_iio_info, + .num_channels = ARRAY_SIZE(axp813_adc_channels), + .channels = axp813_adc_channels, + .adc_en1_mask = AXP22X_ADC_EN1_MASK, + .adc_rate = axp813_adc_rate, + .adc_en2 = false, + .maps = axp22x_maps, +}; + static const struct of_device_id axp20x_adc_of_match[] = { { .compatible = "x-powers,axp209-adc", .data = (void *)&axp20x_data, }, { .compatible = "x-powers,axp221-adc", .data = (void *)&axp22x_data, }, + { .compatible = "x-powers,axp813-adc", .data = (void *)&axp813_data, }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(of, axp20x_adc_of_match); @@ -525,6 +647,7 @@ MODULE_DEVICE_TABLE(of, axp20x_adc_of_match); static const struct platform_device_id axp20x_adc_id_match[] = { { .name = "axp20x-adc", .driver_data = (kernel_ulong_t)&axp20x_data, }, { .name = "axp22x-adc", .driver_data = (kernel_ulong_t)&axp22x_data, }, + { .name = "axp813-adc", .driver_data = (kernel_ulong_t)&axp813_data, }, { /* sentinel */ }, }; MODULE_DEVICE_TABLE(platform, axp20x_adc_id_match); |