The patch titled
Subject: drivers/rtc/rtc-s5m.c: remove unused watchdog and sudden momentary power loss
has been added to the -mm tree. Its filename is
rtc-s5m-remove-unused-watchdog-and-sudden-momentary-power-loss.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/rtc-s5m-remove-unused-watchdog-and-sudden-momentary-power-loss.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/rtc-s5m-remove-unused-watchdog-and-sudden-momentary-power-loss.patch
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------------------------------------------------------
From: Krzysztof Kozlowski <k.kozlowski@xxxxxxxxxxx>
Subject: drivers/rtc/rtc-s5m.c: remove unused watchdog and sudden momentary power loss
The WTSR (Watchdog Timer Software Reset) and SMPL (Sudden Momentary Power
Loss) are never enabled. These are left-overs from board files. After
removing them the driver's shutdown callback is empty so get rid of it as
well.
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@xxxxxxxxxxx>
Cc: Sangbeom Kim <sbkim73@xxxxxxxxxxx>
Cc: Samuel Ortiz <sameo@xxxxxxxxxxxxxxx>
Cc: Lee Jones <lee.jones@xxxxxxxxxx>
Cc: Alessandro Zummo <a.zummo@xxxxxxxxxxxx>
Cc: Kyungmin Park <kyungmin.park@xxxxxxxxxxx>
Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@xxxxxxxxxxx>
Cc: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/rtc/rtc-s5m.c | 60 ----------------------------------------
1 file changed, 60 deletions(-)
diff -puN drivers/rtc/rtc-s5m.c~rtc-s5m-remove-unused-watchdog-and-sudden-momentary-power-loss drivers/rtc/rtc-s5m.c
--- a/drivers/rtc/rtc-s5m.c~rtc-s5m-remove-unused-watchdog-and-sudden-momentary-power-loss
+++ a/drivers/rtc/rtc-s5m.c
@@ -48,8 +48,6 @@ struct s5m_rtc_reg_config {
unsigned int alarm0;
/* First register for alarm 1, seconds */
unsigned int alarm1;
- /* SMPL/WTSR register */
- unsigned int smpl_wtsr;
/*
* Register for update flag (UDR). Typically setting UDR field to 1
* will enable update of time or alarm register. Then it will be
@@ -67,7 +65,6 @@ static const struct s5m_rtc_reg_config s
.ctrl = S5M_ALARM1_CONF,
.alarm0 = S5M_ALARM0_SEC,
.alarm1 = S5M_ALARM1_SEC,
- .smpl_wtsr = S5M_WTSR_SMPL_CNTL,
.rtc_udr_update = S5M_RTC_UDR_CON,
.rtc_udr_mask = S5M_RTC_UDR_MASK,
};
@@ -82,7 +79,6 @@ static const struct s5m_rtc_reg_config s
.ctrl = S2MPS_RTC_CTRL,
.alarm0 = S2MPS_ALARM0_SEC,
.alarm1 = S2MPS_ALARM1_SEC,
- .smpl_wtsr = S2MPS_WTSR_SMPL_CNTL,
.rtc_udr_update = S2MPS_RTC_UDR_CON,
.rtc_udr_mask = S2MPS_RTC_WUDR_MASK,
};
@@ -96,7 +92,6 @@ struct s5m_rtc_info {
int irq;
int device_type;
int rtc_24hr_mode;
- bool wtsr_smpl;
const struct s5m_rtc_reg_config *regs;
};
@@ -597,28 +592,6 @@ static const struct rtc_class_ops s5m_rt
.alarm_irq_enable = s5m_rtc_alarm_irq_enable,
};
-static void s5m_rtc_enable_wtsr(struct s5m_rtc_info *info, bool enable)
-{
- int ret;
- ret = regmap_update_bits(info->regmap, info->regs->smpl_wtsr,
- WTSR_ENABLE_MASK,
- enable ? WTSR_ENABLE_MASK : 0);
- if (ret < 0)
- dev_err(info->dev, "%s: fail to update WTSR reg(%d)\n",
- __func__, ret);
-}
-
-static void s5m_rtc_enable_smpl(struct s5m_rtc_info *info, bool enable)
-{
- int ret;
- ret = regmap_update_bits(info->regmap, info->regs->smpl_wtsr,
- SMPL_ENABLE_MASK,
- enable ? SMPL_ENABLE_MASK : 0);
- if (ret < 0)
- dev_err(info->dev, "%s: fail to update SMPL reg(%d)\n",
- __func__, ret);
-}
-
static int s5m8767_rtc_init_reg(struct s5m_rtc_info *info)
{
u8 data[2];
@@ -715,7 +688,6 @@ static int s5m_rtc_probe(struct platform
info->dev = &pdev->dev;
info->s5m87xx = s5m87xx;
info->device_type = s5m87xx->device_type;
- info->wtsr_smpl = s5m87xx->wtsr_smpl;
if (s5m87xx->irq_data) {
info->irq = regmap_irq_get_virq(s5m87xx->irq_data, alarm_irq);
@@ -731,11 +703,6 @@ static int s5m_rtc_probe(struct platform
ret = s5m8767_rtc_init_reg(info);
- if (info->wtsr_smpl) {
- s5m_rtc_enable_wtsr(info, true);
- s5m_rtc_enable_smpl(info, true);
- }
-
device_init_wakeup(&pdev->dev, 1);
info->rtc_dev = devm_rtc_device_register(&pdev->dev, "s5m-rtc",
@@ -768,36 +735,10 @@ err:
return ret;
}
-static void s5m_rtc_shutdown(struct platform_device *pdev)
-{
- struct s5m_rtc_info *info = platform_get_drvdata(pdev);
- int i;
- unsigned int val = 0;
- if (info->wtsr_smpl) {
- for (i = 0; i < 3; i++) {
- s5m_rtc_enable_wtsr(info, false);
- regmap_read(info->regmap, info->regs->smpl_wtsr, &val);
- pr_debug("%s: WTSR_SMPL reg(0x%02x)\n", __func__, val);
- if (val & WTSR_ENABLE_MASK)
- pr_emerg("%s: fail to disable WTSR\n",
- __func__);
- else {
- pr_info("%s: success to disable WTSR\n",
- __func__);
- break;
- }
- }
- }
- /* Disable SMPL when power off */
- s5m_rtc_enable_smpl(info, false);
-}
-
static int s5m_rtc_remove(struct platform_device *pdev)
{
struct s5m_rtc_info *info = platform_get_drvdata(pdev);
- /* Perform also all shutdown steps when removing */
- s5m_rtc_shutdown(pdev);
i2c_unregister_device(info->i2c);
return 0;
@@ -842,7 +783,6 @@ static struct platform_driver s5m_rtc_dr
},
.probe = s5m_rtc_probe,
.remove = s5m_rtc_remove,
- .shutdown = s5m_rtc_shutdown,
.id_table = s5m_rtc_id,
};
_
Patches currently in -mm which might be from k.kozlowski@xxxxxxxxxxx are
rtc-s5m-remove-unused-watchdog-and-sudden-momentary-power-loss.patch
linux-next.patch
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