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iio: adc: meson-saradc: Meson8 and Meson8b do not have REG11 and REG13 

The Meson GXBB and newer SoCs have a few more registers than the older
Meson8 and Meson8b SoCs.
Use a separate regmap config to limit the older SoCs to the DELTA_10
register.

Fixes: 6c76ed31cd ("iio: adc: meson-saradc: add Meson8b SoC compatibility")
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Martin Blumenstingl 2017-10-31 21:01:45 +01:00 committed by Jonathan Cameron
parent d85eed9f57
commit 96748823c4
1 changed files with 15 additions and 2 deletions
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17
drivers/iio/adc/meson_saradc.c
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@ -224,6 +224,7 @@ struct meson_sar_adc_data {
u32 bandgap_reg;
unsigned int resolution;
const char *name;
const struct regmap_config *regmap_config;
};
struct meson_sar_adc_priv {
@ -243,13 +244,20 @@ struct meson_sar_adc_priv {
int calibscale;
};
static const struct regmap_config meson_sar_adc_regmap_config = {
static const struct regmap_config meson_sar_adc_regmap_config_gxbb = {
.reg_bits = 8,
.val_bits = 32,
.reg_stride = 4,
.max_register = MESON_SAR_ADC_REG13,
};
static const struct regmap_config meson_sar_adc_regmap_config_meson8 = {
.reg_bits = 8,
.val_bits = 32,
.reg_stride = 4,
.max_register = MESON_SAR_ADC_DELTA_10,
};
static unsigned int meson_sar_adc_get_fifo_count(struct iio_dev *indio_dev)
{
struct meson_sar_adc_priv *priv = iio_priv(indio_dev);
@ -859,6 +867,7 @@ static const struct iio_info meson_sar_adc_iio_info = {
static const struct meson_sar_adc_data meson_sar_adc_meson8_data = {
.has_bl30_integration = false,
.bandgap_reg = MESON_SAR_ADC_DELTA_10,
.regmap_config = &meson_sar_adc_regmap_config_meson8,
.resolution = 10,
.name = "meson-meson8-saradc",
};
@ -866,6 +875,7 @@ static const struct meson_sar_adc_data meson_sar_adc_meson8_data = {
static const struct meson_sar_adc_data meson_sar_adc_meson8b_data = {
.has_bl30_integration = false,
.bandgap_reg = MESON_SAR_ADC_DELTA_10,
.regmap_config = &meson_sar_adc_regmap_config_meson8,
.resolution = 10,
.name = "meson-meson8b-saradc",
};
@ -873,6 +883,7 @@ static const struct meson_sar_adc_data meson_sar_adc_meson8b_data = {
static const struct meson_sar_adc_data meson_sar_adc_gxbb_data = {
.has_bl30_integration = true,
.bandgap_reg = MESON_SAR_ADC_REG11,
.regmap_config = &meson_sar_adc_regmap_config_gxbb,
.resolution = 10,
.name = "meson-gxbb-saradc",
};
@ -880,6 +891,7 @@ static const struct meson_sar_adc_data meson_sar_adc_gxbb_data = {
static const struct meson_sar_adc_data meson_sar_adc_gxl_data = {
.has_bl30_integration = true,
.bandgap_reg = MESON_SAR_ADC_REG11,
.regmap_config = &meson_sar_adc_regmap_config_gxbb,
.resolution = 12,
.name = "meson-gxl-saradc",
};
@ -887,6 +899,7 @@ static const struct meson_sar_adc_data meson_sar_adc_gxl_data = {
static const struct meson_sar_adc_data meson_sar_adc_gxm_data = {
.has_bl30_integration = true,
.bandgap_reg = MESON_SAR_ADC_REG11,
.regmap_config = &meson_sar_adc_regmap_config_gxbb,
.resolution = 12,
.name = "meson-gxm-saradc",
};
@ -964,7 +977,7 @@ static int meson_sar_adc_probe(struct platform_device *pdev)
return ret;
priv->regmap = devm_regmap_init_mmio(&pdev->dev, base,
&meson_sar_adc_regmap_config);
priv->data->regmap_config);
if (IS_ERR(priv->regmap))
return PTR_ERR(priv->regmap);