linux-kernel - [PATCH v2 2/3] rtc: s5m: Add separate field for storing auto-cleared mask in register config

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-id: <1451450847-928-2-git-send-email-k.kozlowski@samsung.com>
Date:	Wed, 30 Dec 2015 13:47:26 +0900
From:	Krzysztof Kozlowski <k.kozlowski@...sung.com>
To:	Sangbeom Kim <sbkim73@...sung.com>,
	Krzysztof Kozlowski <k.kozlowski@...sung.com>,
	Alessandro Zummo <a.zummo@...ertech.it>,
	Alexandre Belloni <alexandre.belloni@...e-electrons.com>,
	Lee Jones <lee.jones@...aro.org>, linux-kernel@...r.kernel.org,
	linux-samsung-soc@...r.kernel.org, rtc-linux@...glegroups.com
Cc:	Alim Akhtar <alim.akhtar@...sung.com>,
	Yadwinder Singh Brar <yadi.brar01@...il.com>
Subject: [PATCH v2 2/3] rtc: s5m: Add separate field for storing auto-cleared
 mask in register config

Some devices from S2M/S5M family use different register update masks for
different operations (alarm and register update). Now the driver uses
common register configuration and a lot of exceptions per device in code.

Before eliminating the exceptions and using specific register
configuration for given device, make the auto-cleared mask a separate
field. This is merely a refactoring.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@...sung.com>

---

Changes since v1:
1. None.
---
 drivers/rtc/rtc-s5m.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/rtc/rtc-s5m.c b/drivers/rtc/rtc-s5m.c
index 85649861a6b0..559db8f72117 100644
--- a/drivers/rtc/rtc-s5m.c
+++ b/drivers/rtc/rtc-s5m.c
@@ -56,6 +56,8 @@ struct s5m_rtc_reg_config {
 	 * auto-cleared after successful update.
 	 */
 	unsigned int udr_update;
+	/* Auto-cleared mask in UDR field for writing time and alarm */
+	unsigned int autoclear_udr_mask;
 	/* Mask for UDR field in 'udr_update' register */
 	unsigned int udr_mask;
 };
@@ -68,6 +70,7 @@ static const struct s5m_rtc_reg_config s5m_rtc_regs = {
 	.alarm0			= S5M_ALARM0_SEC,
 	.alarm1			= S5M_ALARM1_SEC,
 	.udr_update		= S5M_RTC_UDR_CON,
+	.autoclear_udr_mask	= S5M_RTC_UDR_MASK,
 	.udr_mask		= S5M_RTC_UDR_MASK,
 };
 
@@ -82,6 +85,7 @@ static const struct s5m_rtc_reg_config s2mps_rtc_regs = {
 	.alarm0			= S2MPS_ALARM0_SEC,
 	.alarm1			= S2MPS_ALARM1_SEC,
 	.udr_update		= S2MPS_RTC_UDR_CON,
+	.autoclear_udr_mask	= S2MPS_RTC_WUDR_MASK,
 	.udr_mask		= S2MPS_RTC_WUDR_MASK,
 };
 
@@ -167,7 +171,7 @@ static inline int s5m8767_wait_for_udr_update(struct s5m_rtc_info *info)
 
 	do {
 		ret = regmap_read(info->regmap, info->regs->udr_update, &data);
-	} while (--retry && (data & info->regs->udr_mask) && !ret);
+	} while (--retry && (data & info->regs->autoclear_udr_mask) && !ret);
 
 	if (!retry)
 		dev_err(info->dev, "waiting for UDR update, reached max number of retries\n");
-- 
1.9.1

--
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/