diff options
| author | Billy Tsai <billy_tsai@aspeedtech.com> | 2021-09-22 11:15:12 +0300 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2021-10-19 10:27:32 +0300 |
| commit | 1de952a4b1cdcbaeb1347744d7e0f27d5b0e6647 (patch) | |
| tree | 09f402773804b0e96a5a536b1d1a0476d6a4c1be /drivers/iio/adc | |
| parent | eaa74a8d510d05a98b5839958ff3c70a30ba8d71 (diff) | |
| download | linux-1de952a4b1cdcbaeb1347744d7e0f27d5b0e6647.tar.xz | |
iio: adc: aspeed: Add vref config function
Add the function to check the vref_fixed_mv and set the value to driver
data.
Signed-off-by: Billy Tsai <billy_tsai@aspeedtech.com>
Link: https://lore.kernel.org/r/20210922081520.30580-4-billy_tsai@aspeedtech.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'drivers/iio/adc')
| -rw-r--r-- | drivers/iio/adc/aspeed_adc.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/drivers/iio/adc/aspeed_adc.c b/drivers/iio/adc/aspeed_adc.c index c1eadd670cc9..c33563046f40 100644 --- a/drivers/iio/adc/aspeed_adc.c +++ b/drivers/iio/adc/aspeed_adc.c @@ -130,7 +130,7 @@ static int aspeed_adc_read_raw(struct iio_dev *indio_dev, return IIO_VAL_INT; case IIO_CHAN_INFO_SCALE: - *val = data->model_data->vref_fixed_mv; + *val = data->vref_mv; *val2 = ASPEED_RESOLUTION_BITS; return IIO_VAL_FRACTIONAL_LOG2; @@ -195,6 +195,17 @@ static const struct iio_info aspeed_adc_iio_info = { .debugfs_reg_access = aspeed_adc_reg_access, }; +static int aspeed_adc_vref_config(struct iio_dev *indio_dev) +{ + struct aspeed_adc_data *data = iio_priv(indio_dev); + + if (data->model_data->vref_fixed_mv) { + data->vref_mv = data->model_data->vref_fixed_mv; + return 0; + } + return 0; +} + static int aspeed_adc_probe(struct platform_device *pdev) { struct iio_dev *indio_dev; @@ -249,6 +260,10 @@ static int aspeed_adc_probe(struct platform_device *pdev) } reset_control_deassert(data->rst); + ret = aspeed_adc_vref_config(indio_dev); + if (ret) + goto vref_config_error; + if (data->model_data->wait_init_sequence) { /* Enable engine in normal mode. */ writel(FIELD_PREP(ASPEED_ADC_OP_MODE, @@ -297,6 +312,7 @@ iio_register_error: clk_disable_unprepare(data->clk_scaler->clk); clk_enable_error: poll_timeout_error: +vref_config_error: reset_control_assert(data->rst); reset_error: clk_hw_unregister_divider(data->clk_scaler); |