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Message-id: <5631B487.3050501@samsung.com> Date: Thu, 29 Oct 2015 14:54:15 +0900 From: Krzysztof Kozlowski <k.kozlowski@...sung.com> To: Alim Akhtar <alim.akhtar@...sung.com>, lee.jones@...aro.org, broonie@...nel.org Cc: linux-samsung-soc@...r.kernel.org, rtc-linux@...glegroups.com, linux-kernel@...r.kernel.org, Alexandre Belloni <alexandre.belloni@...e-electrons.com> Subject: Re: [PATCH v4 4/4] drivers/rtc/rtc-s5m.c: add support for S2MPS15 RTC 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@...e-electrons.com> > Signed-off-by: Alim Akhtar <alim.akhtar@...sung.com> > --- > drivers/rtc/rtc-s5m.c | 20 ++++++++++++++++++-- > include/linux/mfd/samsung/rtc.h | 4 ++++ > 2 files changed, 22 insertions(+), 2 deletions(-) > > 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; > + You are setting here bit 1 and bit 4. However vendor code sets only bit 4 (called WUDR there). That's confusing. Why the difference? Or maybe I am looking at wrong vendor tree (SM-G920F)? > 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; Another difference: you are setting here exactly the same values as S2MPS13 - bit 1 and bit 4. However vendor code sets only bit 4 (called WUDR there)? What exactly is necessary to update alarm and time registers on S2MPS15? > @@ -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); > - This is not related to the patch. Best regards, Krzysztof > 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 > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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