diff options
| author | Krzysztof Kozlowski <krzk@kernel.org> | 2019-02-12 20:45:49 +0300 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2019-02-12 23:56:00 +0300 |
| commit | 103cda6a3b8d2c10d5f8cd7abad118e9db8f4776 (patch) | |
| tree | 76da1598dd96eed812103df2f79735c80457e0fd /drivers/iio/adc/exynos_adc.c | |
| parent | 66d388ff4a73d2f930fa3c9d5ade259522769ea5 (diff) | |
| download | linux-103cda6a3b8d2c10d5f8cd7abad118e9db8f4776.tar.xz | |
iio: adc: exynos-adc: Use proper number of channels for Exynos4x12
Exynos4212 and Exynos4412 have only four ADC channels so using
"samsung,exynos-adc-v1" compatible (for eight channels ADCv1) on them is
wrong. Add a new compatible for Exynos4x12.
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'drivers/iio/adc/exynos_adc.c')
| -rw-r--r-- | drivers/iio/adc/exynos_adc.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/iio/adc/exynos_adc.c b/drivers/iio/adc/exynos_adc.c index 41da522fc673..1ca2c4d39f87 100644 --- a/drivers/iio/adc/exynos_adc.c +++ b/drivers/iio/adc/exynos_adc.c @@ -115,6 +115,7 @@ #define MAX_ADC_V2_CHANNELS 10 #define MAX_ADC_V1_CHANNELS 8 #define MAX_EXYNOS3250_ADC_CHANNELS 2 +#define MAX_EXYNOS4212_ADC_CHANNELS 4 #define MAX_S5PV210_ADC_CHANNELS 10 /* Bit definitions common for ADC_V1 and ADC_V2 */ @@ -271,6 +272,19 @@ static void exynos_adc_v1_start_conv(struct exynos_adc *info, writel(con1 | ADC_CON_EN_START, ADC_V1_CON(info->regs)); } +/* Exynos4212 and 4412 is like ADCv1 but with four channels only */ +static const struct exynos_adc_data exynos4212_adc_data = { + .num_channels = MAX_EXYNOS4212_ADC_CHANNELS, + .mask = ADC_DATX_MASK, /* 12 bit ADC resolution */ + .needs_adc_phy = true, + .phy_offset = EXYNOS_ADCV1_PHY_OFFSET, + + .init_hw = exynos_adc_v1_init_hw, + .exit_hw = exynos_adc_v1_exit_hw, + .clear_irq = exynos_adc_v1_clear_irq, + .start_conv = exynos_adc_v1_start_conv, +}; + static const struct exynos_adc_data exynos_adc_v1_data = { .num_channels = MAX_ADC_V1_CHANNELS, .mask = ADC_DATX_MASK, /* 12 bit ADC resolution */ @@ -493,6 +507,9 @@ static const struct of_device_id exynos_adc_match[] = { .compatible = "samsung,s5pv210-adc", .data = &exynos_adc_s5pv210_data, }, { + .compatible = "samsung,exynos4212-adc", + .data = &exynos4212_adc_data, + }, { .compatible = "samsung,exynos-adc-v1", .data = &exynos_adc_v1_data, }, { |