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SubjectRe: [PATCH V2 5/7] iio: adc: sc27xx: add support for PMIC sc2730
On Sat, Mar 12, 2022 at 12:47 AM Cixi Geng <gengcixi@gmail.com> wrote:
>
> From: Cixi Geng <cixi.geng1@unisoc.com>
>
> sc2730 is the product of sc27xx series.
>
> Signed-off-by: Yuming Zhu <yuming.zhu1@unisoc.com>
> Signed-off-by: Cixi Geng <cixi.geng1@unisoc.com>
> ---
> drivers/iio/adc/sc27xx_adc.c | 108 ++++++++++++++++++++++++++++++++++-
> 1 file changed, 107 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/iio/adc/sc27xx_adc.c b/drivers/iio/adc/sc27xx_adc.c
> index 2603ce313b07..b89637c051ac 100644
> --- a/drivers/iio/adc/sc27xx_adc.c
> +++ b/drivers/iio/adc/sc27xx_adc.c
> @@ -13,9 +13,11 @@
> #include <linux/slab.h>
>
> /* PMIC global registers definition */
> +#define SC2730_MODULE_EN 0x1808
> #define SC2731_MODULE_EN 0xc08
> #define SC27XX_MODULE_ADC_EN BIT(5)
> #define SC2721_ARM_CLK_EN 0xc0c
> +#define SC2730_ARM_CLK_EN 0x180c
> #define SC2731_ARM_CLK_EN 0xc10
> #define SC27XX_CLK_ADC_EN BIT(5)
> #define SC27XX_CLK_ADC_CLK_EN BIT(6)
> @@ -293,6 +295,80 @@ static int sc2721_adc_get_ratio(int channel, int scale)
> return SC27XX_VOLT_RATIO(1, 1);
> }
>
> +static int sc2730_adc_get_ratio(int channel, int scale)
> +{
> + switch (channel) {
> + case 14:
> + switch (scale) {
> + case 0:
> + return SC27XX_VOLT_RATIO(68, 900);
> + case 1:
> + return SC27XX_VOLT_RATIO(68, 1760);
> + case 2:
> + return SC27XX_VOLT_RATIO(68, 2327);
> + case 3:
> + return SC27XX_VOLT_RATIO(68, 3654);
> + default:
> + return SC27XX_VOLT_RATIO(1, 1);
> + }
> + case 15:
> + switch (scale) {
> + case 0:
> + return SC27XX_VOLT_RATIO(1, 3);
> + case 1:
> + return SC27XX_VOLT_RATIO(1000, 5865);
> + case 2:
> + return SC27XX_VOLT_RATIO(500, 3879);
> + case 3:
> + return SC27XX_VOLT_RATIO(500, 6090);
> + default:
> + return SC27XX_VOLT_RATIO(1, 1);
> + }
> + case 16:
> + switch (scale) {
> + case 0:
> + return SC27XX_VOLT_RATIO(48, 100);
> + case 1:
> + return SC27XX_VOLT_RATIO(480, 1955);
> + case 2:
> + return SC27XX_VOLT_RATIO(480, 2586);
> + case 3:
> + return SC27XX_VOLT_RATIO(48, 406);
> + default:
> + return SC27XX_VOLT_RATIO(1, 1);
> + }
> + case 21:
> + case 22:
> + case 23:
> + switch (scale) {
> + case 0:
> + return SC27XX_VOLT_RATIO(3, 8);
> + case 1:
> + return SC27XX_VOLT_RATIO(375, 1955);
> + case 2:
> + return SC27XX_VOLT_RATIO(375, 2586);
> + case 3:
> + return SC27XX_VOLT_RATIO(300, 3248);
> + default:
> + return SC27XX_VOLT_RATIO(1, 1);
> + }
> + default:
> + switch (scale) {
> + case 0:
> + return SC27XX_VOLT_RATIO(1, 1);
> + case 1:
> + return SC27XX_VOLT_RATIO(1000, 1955);
> + case 2:
> + return SC27XX_VOLT_RATIO(1000, 2586);
> + case 3:
> + return SC27XX_VOLT_RATIO(1000, 4060);
> + default:
> + return SC27XX_VOLT_RATIO(1, 1);
> + }
> + }
> + return SC27XX_VOLT_RATIO(1, 1);
> +}
> +
> static int sc2731_adc_get_ratio(int channel, int scale)
> {
> switch (channel) {
> @@ -349,6 +425,22 @@ static void sc2720_adc_scale_init(struct sc27xx_adc_data *data)
> }
> }
>
> +static void sc2730_adc_scale_init(struct sc27xx_adc_data *data)
> +{
> + int i;
> +
> + for (i = 0; i < SC27XX_ADC_CHANNEL_MAX; i++) {
> + if (i == 5 || i == 10 || i == 19 || i == 30 || i == 31)
> + data->channel_scale[i] = 3;
> + else if (i == 7 || i == 9)
> + data->channel_scale[i] = 2;
> + else if (i == 13)
> + data->channel_scale[i] = 1;
> + else
> + data->channel_scale[i] = 0;
> + }
> +}
> +
> static void sc2731_adc_scale_init(struct sc27xx_adc_data *data)
> {
> int i;
> @@ -449,7 +541,8 @@ static int sc27xx_adc_read(struct sc27xx_adc_data *data, int channel,
> SC27XX_ADC_REFVOL_VDD28,
> SC27XX_ADC_REFVOL_VDD28);
> if (ret_volref) {
> - dev_err(data->dev, "failed to set the volref 2.8V, ret_volref = 0x%x\n,ret_volref");
> + dev_err(data->dev, "failed to set the volref 2.8V, ret_volref = 0x%x\n",
> + ret_volref);

Do not add unrelated changes in this patch.

--
Baolin Wang

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