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| author | Sam Protsenko <semen.protsenko@linaro.org> | 2021-11-21 17:56:41 +0100 |
|---|---|---|
| committer | Wim Van Sebroeck <wim@linux-watchdog.org> | 2021-12-28 13:59:02 +0100 |
| commit | 2bd33bb4bc1cdb34b6781f6c1fc1ad475d0ad55b (patch) | |
| tree | 1bc1e21cba39771e9c7af2d773af8199bc9cf6a2 /drivers/watchdog | |
| parent | watchdog: s3c2410: Make reset disable register optional (diff) | |
| download | linux-2bd33bb4bc1cdb34b6781f6c1fc1ad475d0ad55b.tar.xz linux-2bd33bb4bc1cdb34b6781f6c1fc1ad475d0ad55b.zip | |
watchdog: s3c2410: Extract disable and mask code into separate functions
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>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20211107202943.8859-7-semen.protsenko@linaro.org
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
Diffstat (limited to 'drivers/watchdog')
| -rw-r--r-- | drivers/watchdog/s3c2410_wdt.c | 54 |
1 files 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); |