diff options
Diffstat (limited to 'drivers/iio/adc/imx7d_adc.c')
| -rw-r--r-- | drivers/iio/adc/imx7d_adc.c | 24 |
1 files changed, 7 insertions, 17 deletions
diff --git a/drivers/iio/adc/imx7d_adc.c b/drivers/iio/adc/imx7d_adc.c index 4fe97c2a0f43..26a7bbe4d534 100644 --- a/drivers/iio/adc/imx7d_adc.c +++ b/drivers/iio/adc/imx7d_adc.c @@ -78,6 +78,7 @@ #define IMX7D_REG_ADC_INT_STATUS_CHANNEL_CONV_TIME_OUT 0xf0000 #define IMX7D_ADC_TIMEOUT msecs_to_jiffies(100) +#define IMX7D_ADC_INPUT_CLK 24000000 enum imx7d_adc_clk_pre_div { IMX7D_ADC_ANALOG_CLK_PRE_DIV_4, @@ -100,8 +101,6 @@ struct imx7d_adc_feature { enum imx7d_adc_average_num avg_num; u32 core_time_unit; /* impact the sample rate */ - - bool average_en; }; struct imx7d_adc { @@ -179,7 +178,6 @@ static void imx7d_adc_feature_config(struct imx7d_adc *info) info->adc_feature.clk_pre_div = IMX7D_ADC_ANALOG_CLK_PRE_DIV_4; info->adc_feature.avg_num = IMX7D_ADC_AVERAGE_NUM_32; info->adc_feature.core_time_unit = 1; - info->adc_feature.average_en = true; } static void imx7d_adc_sample_rate_set(struct imx7d_adc *info) @@ -240,9 +238,8 @@ static void imx7d_adc_channel_set(struct imx7d_adc *info) /* the channel choose single conversion, and enable average mode */ cfg1 |= (IMX7D_REG_ADC_CH_CFG1_CHANNEL_EN | - IMX7D_REG_ADC_CH_CFG1_CHANNEL_SINGLE); - if (info->adc_feature.average_en) - cfg1 |= IMX7D_REG_ADC_CH_CFG1_CHANNEL_AVG_EN; + IMX7D_REG_ADC_CH_CFG1_CHANNEL_SINGLE | + IMX7D_REG_ADC_CH_CFG1_CHANNEL_AVG_EN); /* * physical channel 0 chose logical channel A @@ -272,13 +269,11 @@ static void imx7d_adc_channel_set(struct imx7d_adc *info) static u32 imx7d_adc_get_sample_rate(struct imx7d_adc *info) { - /* input clock is always 24MHz */ - u32 input_clk = 24000000; u32 analogue_core_clk; u32 core_time_unit = info->adc_feature.core_time_unit; u32 tmp; - analogue_core_clk = input_clk / info->pre_div_num; + analogue_core_clk = IMX7D_ADC_INPUT_CLK / info->pre_div_num; tmp = (core_time_unit + 1) * 6; return analogue_core_clk / tmp; @@ -493,11 +488,8 @@ static int imx7d_adc_probe(struct platform_device *pdev) info->dev = dev; info->regs = devm_platform_ioremap_resource(pdev, 0); - if (IS_ERR(info->regs)) { - ret = PTR_ERR(info->regs); - dev_err(dev, "Failed to remap adc memory, err = %d\n", ret); - return ret; - } + if (IS_ERR(info->regs)) + return PTR_ERR(info->regs); irq = platform_get_irq(pdev, 0); if (irq < 0) { @@ -531,9 +523,7 @@ static int imx7d_adc_probe(struct platform_device *pdev) indio_dev->channels = imx7d_adc_iio_channels; indio_dev->num_channels = ARRAY_SIZE(imx7d_adc_iio_channels); - ret = devm_request_irq(dev, irq, - imx7d_adc_isr, 0, - dev_name(dev), info); + ret = devm_request_irq(dev, irq, imx7d_adc_isr, 0, dev_name(dev), info); if (ret < 0) { dev_err(dev, "Failed requesting irq, irq = %d\n", irq); return ret; |