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iio: adc: meson-saradc: simplify access to meson_sar_adc_param

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Commit 053ffe3c8c ("iio: adc: meson-saradc: squash and share the
common adc platform data") put all the data which is needed at runtime
from struct meson_sar_adc_data to a new struct meson_sar_adc_param so
we can re-use the platform specific configuration without having to
duplicate everything just to change the name.

The only place where struct meson_sar_adc_data is now needed is the
_probe function which has to pass the name to the iio_dev. All other
functions only need access to struct meson_sar_adc_param. This means we
can simplify struct meson_sar_adc_priv.

The goal of this patch is to make the code a bit easier to read since
this removes one level of nesting. No functional changes intended.

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Martin Blumenstingl 2018-09-23 00:21:02 +02:00 committed by Jonathan Cameron
parent 234c64a290
commit 057e5a1109
1 changed files with 14 additions and 14 deletions
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28
drivers/iio/adc/meson_saradc.c
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@ -234,7 +234,7 @@ struct meson_sar_adc_data {
struct meson_sar_adc_priv {
struct regmap *regmap;
struct regulator *vref;
const struct meson_sar_adc_data *data;
const struct meson_sar_adc_param *param;
struct clk *clkin;
struct clk *core_clk;
struct clk *adc_sel_clk;
@ -279,7 +279,7 @@ static int meson_sar_adc_calib_val(struct iio_dev *indio_dev, int val)
/* use val_calib = scale * val_raw + offset calibration function */
tmp = div_s64((s64)val * priv->calibscale, MILLION) + priv->calibbias;
return clamp(tmp, 0, (1 << priv->data->param->resolution) - 1);
return clamp(tmp, 0, (1 << priv->param->resolution) - 1);
}
static int meson_sar_adc_wait_busy_clear(struct iio_dev *indio_dev)
@ -331,7 +331,7 @@ static int meson_sar_adc_read_raw_sample(struct iio_dev *indio_dev,
}
fifo_val = FIELD_GET(MESON_SAR_ADC_FIFO_RD_SAMPLE_VALUE_MASK, regval);
fifo_val &= GENMASK(priv->data->param->resolution - 1, 0);
fifo_val &= GENMASK(priv->param->resolution - 1, 0);
*val = meson_sar_adc_calib_val(indio_dev, fifo_val);
return 0;
@ -450,7 +450,7 @@ static int meson_sar_adc_lock(struct iio_dev *indio_dev)
mutex_lock(&indio_dev->mlock);
if (priv->data->param->has_bl30_integration) {
if (priv->param->has_bl30_integration) {
/* prevent BL30 from using the SAR ADC while we are using it */
regmap_update_bits(priv->regmap, MESON_SAR_ADC_DELAY,
MESON_SAR_ADC_DELAY_KERNEL_BUSY,
@ -478,7 +478,7 @@ static void meson_sar_adc_unlock(struct iio_dev *indio_dev)
{
struct meson_sar_adc_priv *priv = iio_priv(indio_dev);
if (priv->data->param->has_bl30_integration)
if (priv->param->has_bl30_integration)
/* allow BL30 to use the SAR ADC again */
regmap_update_bits(priv->regmap, MESON_SAR_ADC_DELAY,
MESON_SAR_ADC_DELAY_KERNEL_BUSY, 0);
@ -562,7 +562,7 @@ static int meson_sar_adc_iio_info_read_raw(struct iio_dev *indio_dev,
}
*val = ret / 1000;
*val2 = priv->data->param->resolution;
*val2 = priv->param->resolution;
return IIO_VAL_FRACTIONAL_LOG2;
case IIO_CHAN_INFO_CALIBBIAS:
@ -635,7 +635,7 @@ static int meson_sar_adc_init(struct iio_dev *indio_dev)
*/
meson_sar_adc_set_chan7_mux(indio_dev, CHAN7_MUX_CH7_INPUT);
if (priv->data->param->has_bl30_integration) {
if (priv->param->has_bl30_integration) {
/*
* leave sampling delay and the input clocks as configured by
* BL30 to make sure BL30 gets the values it expects when
@ -715,7 +715,7 @@ static int meson_sar_adc_init(struct iio_dev *indio_dev)
return ret;
}
ret = clk_set_rate(priv->adc_clk, priv->data->param->clock_rate);
ret = clk_set_rate(priv->adc_clk, priv->param->clock_rate);
if (ret) {
dev_err(indio_dev->dev.parent,
"failed to set adc clock rate\n");
@ -728,7 +728,7 @@ static int meson_sar_adc_init(struct iio_dev *indio_dev)
static void meson_sar_adc_set_bandgap(struct iio_dev *indio_dev, bool on_off)
{
struct meson_sar_adc_priv *priv = iio_priv(indio_dev);
const struct meson_sar_adc_param *param = priv->data->param;
const struct meson_sar_adc_param *param = priv->param;
u32 enable_mask;
if (param->bandgap_reg == MESON_SAR_ADC_REG11)
@ -848,8 +848,8 @@ static int meson_sar_adc_calib(struct iio_dev *indio_dev)
int ret, nominal0, nominal1, value0, value1;
/* use points 25% and 75% for calibration */
nominal0 = (1 << priv->data->param->resolution) / 4;
nominal1 = (1 << priv->data->param->resolution) * 3 / 4;
nominal0 = (1 << priv->param->resolution) / 4;
nominal1 = (1 << priv->param->resolution) * 3 / 4;
meson_sar_adc_set_chan7_mux(indio_dev, CHAN7_MUX_VDD_DIV4);
usleep_range(10, 20);
@ -1000,9 +1000,9 @@ static int meson_sar_adc_probe(struct platform_device *pdev)
return -ENODEV;
}
priv->data = match_data;
priv->param = match_data->param;
indio_dev->name = priv->data->name;
indio_dev->name = match_data->name;
indio_dev->dev.parent = &pdev->dev;
indio_dev->dev.of_node = pdev->dev.of_node;
indio_dev->modes = INDIO_DIRECT_MODE;
@ -1026,7 +1026,7 @@ static int meson_sar_adc_probe(struct platform_device *pdev)
return ret;
priv->regmap = devm_regmap_init_mmio(&pdev->dev, base,
priv->data->param->regmap_config);
priv->param->regmap_config);
if (IS_ERR(priv->regmap))
return PTR_ERR(priv->regmap);