From: Sam Protsenko <semen.protsenko@linaro.org>
To: Wim Van Sebroeck <wim@linux-watchdog.org>,
Guenter Roeck <linux@roeck-us.net>,
Rob Herring <robh+dt@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Cc: linux-watchdog@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-samsung-soc@vger.kernel.org
Subject: [PATCH v3 06/12] watchdog: s3c2410: Extract disable and mask code into separate functions
Date: Sun, 7 Nov 2021 22:29:37 +0200 [thread overview]
Message-ID: <20211107202943.8859-7-semen.protsenko@linaro.org> (raw)
In-Reply-To: <20211107202943.8859-1-semen.protsenko@linaro.org>
The s3c2410wdt_mask_and_disable_reset() function content is bound to be
changed further. Prepare it for upcoming changes by splitting into
separate "mask reset" and "disable reset" functions. But keep
s3c2410wdt_mask_and_disable_reset() function present as a facade.
This commit doesn't bring any functional change to existing devices, but
merely provides an infrastructure for upcoming chips support.
Signed-off-by: Sam Protsenko <semen.protsenko@linaro.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
---
Changes in v3:
- Added R-b tag by Krzysztof Kozlowski
Changes in v2:
- (none): it's a new patch
drivers/watchdog/s3c2410_wdt.c | 54 ++++++++++++++++++++++------------
1 file changed, 35 insertions(+), 19 deletions(-)
diff --git a/drivers/watchdog/s3c2410_wdt.c b/drivers/watchdog/s3c2410_wdt.c
index 2cc4923a98a5..4ac0a30e835e 100644
--- a/drivers/watchdog/s3c2410_wdt.c
+++ b/drivers/watchdog/s3c2410_wdt.c
@@ -202,37 +202,53 @@ static inline struct s3c2410_wdt *freq_to_wdt(struct notifier_block *nb)
return container_of(nb, struct s3c2410_wdt, freq_transition);
}
-static int s3c2410wdt_mask_and_disable_reset(struct s3c2410_wdt *wdt, bool mask)
+static int s3c2410wdt_disable_wdt_reset(struct s3c2410_wdt *wdt, bool mask)
{
+ const u32 mask_val = BIT(wdt->drv_data->mask_bit);
+ const u32 val = mask ? mask_val : 0;
int ret;
- u32 mask_val = 1 << wdt->drv_data->mask_bit;
- u32 val = 0;
- /* No need to do anything if no PMU CONFIG needed */
- if (!(wdt->drv_data->quirks & QUIRK_HAS_PMU_CONFIG))
- return 0;
+ ret = regmap_update_bits(wdt->pmureg, wdt->drv_data->disable_reg,
+ mask_val, val);
+ if (ret < 0)
+ dev_err(wdt->dev, "failed to update reg(%d)\n", ret);
- if (mask)
- val = mask_val;
+ return ret;
+}
- if (wdt->drv_data->quirks & QUIRK_HAS_PMU_AUTO_DISABLE) {
- ret = regmap_update_bits(wdt->pmureg,
- wdt->drv_data->disable_reg, mask_val,
- val);
- if (ret < 0)
- goto error;
- }
+static int s3c2410wdt_mask_wdt_reset(struct s3c2410_wdt *wdt, bool mask)
+{
+ const u32 mask_val = BIT(wdt->drv_data->mask_bit);
+ const u32 val = mask ? mask_val : 0;
+ int ret;
- ret = regmap_update_bits(wdt->pmureg,
- wdt->drv_data->mask_reset_reg,
- mask_val, val);
- error:
+ ret = regmap_update_bits(wdt->pmureg, wdt->drv_data->mask_reset_reg,
+ mask_val, val);
if (ret < 0)
dev_err(wdt->dev, "failed to update reg(%d)\n", ret);
return ret;
}
+static int s3c2410wdt_mask_and_disable_reset(struct s3c2410_wdt *wdt, bool mask)
+{
+ int ret;
+
+ if (wdt->drv_data->quirks & QUIRK_HAS_PMU_AUTO_DISABLE) {
+ ret = s3c2410wdt_disable_wdt_reset(wdt, mask);
+ if (ret < 0)
+ return ret;
+ }
+
+ if (wdt->drv_data->quirks & QUIRK_HAS_PMU_CONFIG) {
+ ret = s3c2410wdt_mask_wdt_reset(wdt, mask);
+ if (ret < 0)
+ return ret;
+ }
+
+ return 0;
+}
+
static int s3c2410wdt_keepalive(struct watchdog_device *wdd)
{
struct s3c2410_wdt *wdt = watchdog_get_drvdata(wdd);
--
2.30.2
next prev parent reply other threads:[~2021-11-07 20:30 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-07 20:29 [PATCH v3 00/12] watchdog: s3c2410: Add Exynos850 support Sam Protsenko
2021-11-07 20:29 ` [PATCH v3 01/12] dt-bindings: watchdog: Require samsung,syscon-phandle for Exynos7 Sam Protsenko
2021-11-17 13:33 ` Guenter Roeck
2021-11-07 20:29 ` [PATCH v3 02/12] dt-bindings: watchdog: Document Exynos850 watchdog bindings Sam Protsenko
2021-11-08 13:08 ` Krzysztof Kozlowski
2021-11-12 22:43 ` Rob Herring
2021-11-17 13:34 ` Guenter Roeck
2021-11-07 20:29 ` [PATCH v3 03/12] watchdog: s3c2410: Fail probe if can't find valid timeout Sam Protsenko
2021-11-17 13:34 ` Guenter Roeck
2021-11-07 20:29 ` [PATCH v3 04/12] watchdog: s3c2410: Let kernel kick watchdog Sam Protsenko
2021-11-17 13:34 ` Guenter Roeck
2021-11-07 20:29 ` [PATCH v3 05/12] watchdog: s3c2410: Make reset disable register optional Sam Protsenko
2021-11-17 13:35 ` Guenter Roeck
2021-11-07 20:29 ` Sam Protsenko [this message]
2021-11-17 13:35 ` [PATCH v3 06/12] watchdog: s3c2410: Extract disable and mask code into separate functions Guenter Roeck
2021-11-07 20:29 ` [PATCH v3 07/12] watchdog: s3c2410: Implement a way to invert mask reg value Sam Protsenko
2021-11-17 13:35 ` Guenter Roeck
2021-11-07 20:29 ` [PATCH v3 08/12] watchdog: s3c2410: Add support for WDT counter enable register Sam Protsenko
2021-11-17 13:36 ` Guenter Roeck
2021-11-07 20:29 ` [PATCH v3 09/12] watchdog: s3c2410: Cleanup PMU related code Sam Protsenko
2021-11-17 13:36 ` Guenter Roeck
2021-11-07 20:29 ` [PATCH v3 10/12] watchdog: s3c2410: Support separate source clock Sam Protsenko
2021-11-08 13:24 ` Krzysztof Kozlowski
2021-11-17 13:37 ` Guenter Roeck
2021-11-07 20:29 ` [PATCH v3 11/12] watchdog: s3c2410: Remove superfluous err label Sam Protsenko
2021-11-17 13:37 ` Guenter Roeck
2021-11-07 20:29 ` [PATCH v3 12/12] watchdog: s3c2410: Add Exynos850 support Sam Protsenko
2021-11-08 13:25 ` Krzysztof Kozlowski
2021-11-17 13:37 ` Guenter Roeck
2021-11-20 20:29 ` Guenter Roeck
2021-11-21 16:25 ` Sam Protsenko
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