diff options
| -rw-r--r-- | drivers/iio/adc/ad7380.c | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/drivers/iio/adc/ad7380.c b/drivers/iio/adc/ad7380.c index e033c7341911..b107d8e97ab3 100644 --- a/drivers/iio/adc/ad7380.c +++ b/drivers/iio/adc/ad7380.c @@ -75,6 +75,7 @@ #define T_CONVERT_NS 190 /* conversion time */ #define T_CONVERT_0_NS 10 /* 1st conversion start time (oversampling) */ #define T_CONVERT_X_NS 500 /* xth conversion start time (oversampling) */ +#define T_POWERUP_US 5000 /* Power up */ struct ad7380_timing_specs { const unsigned int t_csh_ns; /* CS minimum high time */ @@ -86,6 +87,8 @@ struct ad7380_chip_info { unsigned int num_channels; unsigned int num_simult_channels; bool has_mux; + const char * const *supplies; + unsigned int num_supplies; const char * const *vcm_supplies; unsigned int num_vcm_supplies; const unsigned long *available_scan_masks; @@ -243,6 +246,10 @@ DEFINE_AD7380_8_CHANNEL(ad7386_4_channels, 16, 0, u); DEFINE_AD7380_8_CHANNEL(ad7387_4_channels, 14, 0, u); DEFINE_AD7380_8_CHANNEL(ad7388_4_channels, 12, 0, u); +static const char * const ad7380_supplies[] = { + "vcc", "vlogic", +}; + static const char * const ad7380_2_channel_vcm_supplies[] = { "aina", "ainb", }; @@ -338,6 +345,8 @@ static const struct ad7380_chip_info ad7380_chip_info = { .channels = ad7380_channels, .num_channels = ARRAY_SIZE(ad7380_channels), .num_simult_channels = 2, + .supplies = ad7380_supplies, + .num_supplies = ARRAY_SIZE(ad7380_supplies), .available_scan_masks = ad7380_2_channel_scan_masks, .timing_specs = &ad7380_timing, }; @@ -347,6 +356,8 @@ static const struct ad7380_chip_info ad7381_chip_info = { .channels = ad7381_channels, .num_channels = ARRAY_SIZE(ad7381_channels), .num_simult_channels = 2, + .supplies = ad7380_supplies, + .num_supplies = ARRAY_SIZE(ad7380_supplies), .available_scan_masks = ad7380_2_channel_scan_masks, .timing_specs = &ad7380_timing, }; @@ -356,6 +367,8 @@ static const struct ad7380_chip_info ad7383_chip_info = { .channels = ad7383_channels, .num_channels = ARRAY_SIZE(ad7383_channels), .num_simult_channels = 2, + .supplies = ad7380_supplies, + .num_supplies = ARRAY_SIZE(ad7380_supplies), .vcm_supplies = ad7380_2_channel_vcm_supplies, .num_vcm_supplies = ARRAY_SIZE(ad7380_2_channel_vcm_supplies), .available_scan_masks = ad7380_2_channel_scan_masks, @@ -367,6 +380,8 @@ static const struct ad7380_chip_info ad7384_chip_info = { .channels = ad7384_channels, .num_channels = ARRAY_SIZE(ad7384_channels), .num_simult_channels = 2, + .supplies = ad7380_supplies, + .num_supplies = ARRAY_SIZE(ad7380_supplies), .vcm_supplies = ad7380_2_channel_vcm_supplies, .num_vcm_supplies = ARRAY_SIZE(ad7380_2_channel_vcm_supplies), .available_scan_masks = ad7380_2_channel_scan_masks, @@ -378,6 +393,8 @@ static const struct ad7380_chip_info ad7386_chip_info = { .channels = ad7386_channels, .num_channels = ARRAY_SIZE(ad7386_channels), .num_simult_channels = 2, + .supplies = ad7380_supplies, + .num_supplies = ARRAY_SIZE(ad7380_supplies), .has_mux = true, .available_scan_masks = ad7380_2x2_channel_scan_masks, .timing_specs = &ad7380_timing, @@ -388,6 +405,8 @@ static const struct ad7380_chip_info ad7387_chip_info = { .channels = ad7387_channels, .num_channels = ARRAY_SIZE(ad7387_channels), .num_simult_channels = 2, + .supplies = ad7380_supplies, + .num_supplies = ARRAY_SIZE(ad7380_supplies), .has_mux = true, .available_scan_masks = ad7380_2x2_channel_scan_masks, .timing_specs = &ad7380_timing, @@ -398,6 +417,8 @@ static const struct ad7380_chip_info ad7388_chip_info = { .channels = ad7388_channels, .num_channels = ARRAY_SIZE(ad7388_channels), .num_simult_channels = 2, + .supplies = ad7380_supplies, + .num_supplies = ARRAY_SIZE(ad7380_supplies), .has_mux = true, .available_scan_masks = ad7380_2x2_channel_scan_masks, .timing_specs = &ad7380_timing, @@ -408,6 +429,8 @@ static const struct ad7380_chip_info ad7380_4_chip_info = { .channels = ad7380_4_channels, .num_channels = ARRAY_SIZE(ad7380_4_channels), .num_simult_channels = 4, + .supplies = ad7380_supplies, + .num_supplies = ARRAY_SIZE(ad7380_supplies), .available_scan_masks = ad7380_4_channel_scan_masks, .timing_specs = &ad7380_4_timing, }; @@ -417,6 +440,8 @@ static const struct ad7380_chip_info ad7381_4_chip_info = { .channels = ad7381_4_channels, .num_channels = ARRAY_SIZE(ad7381_4_channels), .num_simult_channels = 4, + .supplies = ad7380_supplies, + .num_supplies = ARRAY_SIZE(ad7380_supplies), .available_scan_masks = ad7380_4_channel_scan_masks, .timing_specs = &ad7380_4_timing, }; @@ -426,6 +451,8 @@ static const struct ad7380_chip_info ad7383_4_chip_info = { .channels = ad7383_4_channels, .num_channels = ARRAY_SIZE(ad7383_4_channels), .num_simult_channels = 4, + .supplies = ad7380_supplies, + .num_supplies = ARRAY_SIZE(ad7380_supplies), .vcm_supplies = ad7380_4_channel_vcm_supplies, .num_vcm_supplies = ARRAY_SIZE(ad7380_4_channel_vcm_supplies), .available_scan_masks = ad7380_4_channel_scan_masks, @@ -437,6 +464,8 @@ static const struct ad7380_chip_info ad7384_4_chip_info = { .channels = ad7384_4_channels, .num_channels = ARRAY_SIZE(ad7384_4_channels), .num_simult_channels = 4, + .supplies = ad7380_supplies, + .num_supplies = ARRAY_SIZE(ad7380_supplies), .vcm_supplies = ad7380_4_channel_vcm_supplies, .num_vcm_supplies = ARRAY_SIZE(ad7380_4_channel_vcm_supplies), .available_scan_masks = ad7380_4_channel_scan_masks, @@ -448,6 +477,8 @@ static const struct ad7380_chip_info ad7386_4_chip_info = { .channels = ad7386_4_channels, .num_channels = ARRAY_SIZE(ad7386_4_channels), .num_simult_channels = 4, + .supplies = ad7380_supplies, + .num_supplies = ARRAY_SIZE(ad7380_supplies), .has_mux = true, .available_scan_masks = ad7380_2x4_channel_scan_masks, .timing_specs = &ad7380_4_timing, @@ -458,6 +489,8 @@ static const struct ad7380_chip_info ad7387_4_chip_info = { .channels = ad7387_4_channels, .num_channels = ARRAY_SIZE(ad7387_4_channels), .num_simult_channels = 4, + .supplies = ad7380_supplies, + .num_supplies = ARRAY_SIZE(ad7380_supplies), .has_mux = true, .available_scan_masks = ad7380_2x4_channel_scan_masks, .timing_specs = &ad7380_4_timing, @@ -468,6 +501,8 @@ static const struct ad7380_chip_info ad7388_4_chip_info = { .channels = ad7388_4_channels, .num_channels = ARRAY_SIZE(ad7388_4_channels), .num_simult_channels = 4, + .supplies = ad7380_supplies, + .num_supplies = ARRAY_SIZE(ad7380_supplies), .has_mux = true, .available_scan_masks = ad7380_2x4_channel_scan_masks, .timing_specs = &ad7380_4_timing, @@ -1004,6 +1039,14 @@ static int ad7380_probe(struct spi_device *spi) if (!st->chip_info) return dev_err_probe(&spi->dev, -EINVAL, "missing match data\n"); + ret = devm_regulator_bulk_get_enable(&spi->dev, st->chip_info->num_supplies, + st->chip_info->supplies); + + if (ret) + return dev_err_probe(&spi->dev, ret, + "Failed to enable power supplies\n"); + fsleep(T_POWERUP_US); + /* * If there is no REFIO supply, then it means that we are using * the internal 2.5V reference, otherwise REFIO is reference voltage. |