Re: [PATCH v4 4/4] drivers/rtc/rtc-s5m.c: add support for S2MPS15 RTC

[Krzysztof Kozlowski <k.kozlowski@samsung.com>]

On 29.10.2015 13:58, Alim Akhtar wrote:
> RTC found in s2mps15 is almost same as one found on s2mps14/13
> with few differences in RTC_UPDATE register fields, like
> bit fields are changed for WUDR and AUDR.
> This patch add required changes to enable s2mps15 rtc timer.
> 
> Cc: Alexandre Belloni <alexandre.belloni@free-electrons.com>
> Signed-off-by: Alim Akhtar <alim.akhtar@samsung.com>
> ---
>  drivers/rtc/rtc-s5m.c           |   20 ++++++++++++++++++--
>  include/linux/mfd/samsung/rtc.h |    4 ++++
>  2 files changed, 22 insertions(+), 2 deletions(-)


Oh, this is totally different than previous patch and changelog does not
mention these changes.

Was the previous RTC patch tested?
Here the AUDR and WUDR seem to be reversed... oh, that is strange. :)

Best regards,
Krzysztof

> 
> diff --git a/drivers/rtc/rtc-s5m.c b/drivers/rtc/rtc-s5m.c
> index f2504b4eef34..0d106a99958f 100644
> --- a/drivers/rtc/rtc-s5m.c
> +++ b/drivers/rtc/rtc-s5m.c
> @@ -188,6 +188,7 @@ static inline int s5m_check_peding_alarm_interrupt(struct s5m_rtc_info *info,
>  		ret = regmap_read(info->regmap, S5M_RTC_STATUS, &val);
>  		val &= S5M_ALARM0_STATUS;
>  		break;
> +	case S2MPS15X:
>  	case S2MPS14X:
>  	case S2MPS13X:
>  		ret = regmap_read(info->s5m87xx->regmap_pmic, S2MPS14_REG_ST2,
> @@ -223,6 +224,9 @@ static inline int s5m8767_rtc_set_time_reg(struct s5m_rtc_info *info)
>  	if (info->device_type == S5M8763X || info->device_type == S5M8767X)
>  		data |= S5M_RTC_TIME_EN_MASK;
>  
> +	if (info->device_type == S2MPS15X)
> +		data |= S2MPS15_RTC_WUDR_MASK;
> +
>  	ret = regmap_write(info->regmap, info->regs->rtc_udr_update, data);
>  	if (ret < 0) {
>  		dev_err(info->dev, "failed to write update reg(%d)\n", ret);
> @@ -252,6 +256,9 @@ static inline int s5m8767_rtc_set_alarm_reg(struct s5m_rtc_info *info)
>  	case S5M8767X:
>  		data &= ~S5M_RTC_TIME_EN_MASK;
>  		break;
> +	case S2MPS15X:
> +		data |= S2MPS15_RTC_AUDR_MASK;
> +		break;
>  	case S2MPS14X:
>  		data |= S2MPS_RTC_RUDR_MASK;
>  		break;
> @@ -275,7 +282,6 @@ static inline int s5m8767_rtc_set_alarm_reg(struct s5m_rtc_info *info)
>  	if (info->device_type == S2MPS13X)
>  		regmap_update_bits(info->regmap, info->regs->rtc_udr_update,
>  				   S2MPS13_RTC_AUDR_MASK, 0);
> -
>  	return ret;
>  }
>  
> @@ -317,7 +323,8 @@ static int s5m_rtc_read_time(struct device *dev, struct rtc_time *tm)
>  	u8 data[info->regs->regs_count];
>  	int ret;
>  
> -	if (info->device_type == S2MPS14X || info->device_type == S2MPS13X) {
> +	if (info->device_type == S2MPS15X || info->device_type == S2MPS14X ||
> +			info->device_type == S2MPS13X) {
>  		ret = regmap_update_bits(info->regmap,
>  				info->regs->rtc_udr_update,
>  				S2MPS_RTC_RUDR_MASK, S2MPS_RTC_RUDR_MASK);
> @@ -339,6 +346,7 @@ static int s5m_rtc_read_time(struct device *dev, struct rtc_time *tm)
>  		break;
>  
>  	case S5M8767X:
> +	case S2MPS15X:
>  	case S2MPS14X:
>  	case S2MPS13X:
>  		s5m8767_data_to_tm(data, tm, info->rtc_24hr_mode);
> @@ -366,6 +374,7 @@ static int s5m_rtc_set_time(struct device *dev, struct rtc_time *tm)
>  		s5m8763_tm_to_data(tm, data);
>  		break;
>  	case S5M8767X:
> +	case S2MPS15X:
>  	case S2MPS14X:
>  	case S2MPS13X:
>  		ret = s5m8767_tm_to_data(tm, data);
> @@ -414,6 +423,7 @@ static int s5m_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
>  		break;
>  
>  	case S5M8767X:
> +	case S2MPS15X:
>  	case S2MPS14X:
>  	case S2MPS13X:
>  		s5m8767_data_to_tm(data, &alrm->time, info->rtc_24hr_mode);
> @@ -463,6 +473,7 @@ static int s5m_rtc_stop_alarm(struct s5m_rtc_info *info)
>  		break;
>  
>  	case S5M8767X:
> +	case S2MPS15X:
>  	case S2MPS14X:
>  	case S2MPS13X:
>  		for (i = 0; i < info->regs->regs_count; i++)
> @@ -508,6 +519,7 @@ static int s5m_rtc_start_alarm(struct s5m_rtc_info *info)
>  		break;
>  
>  	case S5M8767X:
> +	case S2MPS15X:
>  	case S2MPS14X:
>  	case S2MPS13X:
>  		data[RTC_SEC] |= ALARM_ENABLE_MASK;
> @@ -548,6 +560,7 @@ static int s5m_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
>  		break;
>  
>  	case S5M8767X:
> +	case S2MPS15X:
>  	case S2MPS14X:
>  	case S2MPS13X:
>  		s5m8767_tm_to_data(&alrm->time, data);
> @@ -631,6 +644,7 @@ static int s5m8767_rtc_init_reg(struct s5m_rtc_info *info)
>  		ret = regmap_raw_write(info->regmap, S5M_ALARM0_CONF, data, 2);
>  		break;
>  
> +	case S2MPS15X:
>  	case S2MPS14X:
>  	case S2MPS13X:
>  		data[0] = (0 << BCD_EN_SHIFT) | (1 << MODEL24_SHIFT);
> @@ -679,6 +693,7 @@ static int s5m_rtc_probe(struct platform_device *pdev)
>  		return -ENOMEM;
>  
>  	switch (platform_get_device_id(pdev)->driver_data) {
> +	case S2MPS15X:
>  	case S2MPS14X:
>  	case S2MPS13X:
>  		regmap_cfg = &s2mps14_rtc_regmap_config;
> @@ -805,6 +820,7 @@ static const struct platform_device_id s5m_rtc_id[] = {
>  	{ "s5m-rtc",		S5M8767X },
>  	{ "s2mps13-rtc",	S2MPS13X },
>  	{ "s2mps14-rtc",	S2MPS14X },
> +	{ "s2mps15-rtc",	S2MPS15X },
>  	{ },
>  };
>  MODULE_DEVICE_TABLE(platform, s5m_rtc_id);
> diff --git a/include/linux/mfd/samsung/rtc.h b/include/linux/mfd/samsung/rtc.h
> index 29c30ac36020..0be45fccc52b 100644
> --- a/include/linux/mfd/samsung/rtc.h
> +++ b/include/linux/mfd/samsung/rtc.h
> @@ -107,6 +107,10 @@ enum s2mps_rtc_reg {
>  #define S2MPS_RTC_WUDR_MASK	(1 << S2MPS_RTC_WUDR_SHIFT)
>  #define S2MPS13_RTC_AUDR_SHIFT	1
>  #define S2MPS13_RTC_AUDR_MASK	(1 << S2MPS13_RTC_AUDR_SHIFT)
> +#define S2MPS15_RTC_AUDR_SHIFT	4
> +#define S2MPS15_RTC_AUDR_MASK	(1 << S2MPS15_RTC_AUDR_SHIFT)
> +#define S2MPS15_RTC_WUDR_SHIFT	1
> +#define S2MPS15_RTC_WUDR_MASK	(1 << S2MPS15_RTC_WUDR_SHIFT)
>  #define S2MPS_RTC_RUDR_SHIFT	0
>  #define S2MPS_RTC_RUDR_MASK	(1 << S2MPS_RTC_RUDR_SHIFT)
>  #define RTC_TCON_SHIFT		1
>