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watchdog: da9063_wdt: Simplify by removing unneeded struct...

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...da9063_watchdog, which contained nothing but struct watchdog_device and a
struct da9063 pointer.
Assign the struct da9063 pointer directly to the struct watchdog_device's
driver_data field instead of creating struct da9063_watchdog and assigning
it's address there.
Spares a pointer's size data memory and an indirection level in the callbacks.

Signed-off-by: Karsten Wiese <fzuuzf@googlemail.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
This commit is contained in:
fzuuzf@googlemail.com 2017-07-25 13:25:58 +02:00 committed by Wim Van Sebroeck
parent dd0a18ca4c
commit a1f2a82072
1 changed files with 30 additions and 37 deletions
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67
drivers/watchdog/da9063_wdt.c
View file

@ -36,11 +36,6 @@ static const unsigned int wdt_timeout[] = { 0, 2, 4, 8, 16, 32, 65, 131 };
#define DA9063_WDG_TIMEOUT wdt_timeout[3]
#define DA9063_RESET_PROTECTION_MS 256
struct da9063_watchdog {
struct da9063 *da9063;
struct watchdog_device wdtdev;
};
static unsigned int da9063_wdt_timeout_to_sel(unsigned int secs)
{
unsigned int i;
@ -61,14 +56,14 @@ static int _da9063_wdt_set_timeout(struct da9063 *da9063, unsigned int regval)
static int da9063_wdt_start(struct watchdog_device *wdd)
{
struct da9063_watchdog *wdt = watchdog_get_drvdata(wdd);
struct da9063 *da9063 = watchdog_get_drvdata(wdd);
unsigned int selector;
int ret;
selector = da9063_wdt_timeout_to_sel(wdt->wdtdev.timeout);
ret = _da9063_wdt_set_timeout(wdt->da9063, selector);
selector = da9063_wdt_timeout_to_sel(wdd->timeout);
ret = _da9063_wdt_set_timeout(da9063, selector);
if (ret)
dev_err(wdt->da9063->dev, "Watchdog failed to start (err = %d)\n",
dev_err(da9063->dev, "Watchdog failed to start (err = %d)\n",
ret);
return ret;
@ -76,13 +71,13 @@ static int da9063_wdt_start(struct watchdog_device *wdd)
static int da9063_wdt_stop(struct watchdog_device *wdd)
{
struct da9063_watchdog *wdt = watchdog_get_drvdata(wdd);
struct da9063 *da9063 = watchdog_get_drvdata(wdd);
int ret;
ret = regmap_update_bits(wdt->da9063->regmap, DA9063_REG_CONTROL_D,
ret = regmap_update_bits(da9063->regmap, DA9063_REG_CONTROL_D,
DA9063_TWDSCALE_MASK, DA9063_TWDSCALE_DISABLE);
if (ret)
dev_alert(wdt->da9063->dev, "Watchdog failed to stop (err = %d)\n",
dev_alert(da9063->dev, "Watchdog failed to stop (err = %d)\n",
ret);
return ret;
@ -90,13 +85,13 @@ static int da9063_wdt_stop(struct watchdog_device *wdd)
static int da9063_wdt_ping(struct watchdog_device *wdd)
{
struct da9063_watchdog *wdt = watchdog_get_drvdata(wdd);
struct da9063 *da9063 = watchdog_get_drvdata(wdd);
int ret;
ret = regmap_write(wdt->da9063->regmap, DA9063_REG_CONTROL_F,
ret = regmap_write(da9063->regmap, DA9063_REG_CONTROL_F,
DA9063_WATCHDOG);
if (ret)
dev_alert(wdt->da9063->dev, "Failed to ping the watchdog (err = %d)\n",
dev_alert(da9063->dev, "Failed to ping the watchdog (err = %d)\n",
ret);
return ret;
@ -105,14 +100,14 @@ static int da9063_wdt_ping(struct watchdog_device *wdd)
static int da9063_wdt_set_timeout(struct watchdog_device *wdd,
unsigned int timeout)
{
struct da9063_watchdog *wdt = watchdog_get_drvdata(wdd);
struct da9063 *da9063 = watchdog_get_drvdata(wdd);
unsigned int selector;
int ret;
selector = da9063_wdt_timeout_to_sel(timeout);
ret = _da9063_wdt_set_timeout(wdt->da9063, selector);
ret = _da9063_wdt_set_timeout(da9063, selector);
if (ret)
dev_err(wdt->da9063->dev, "Failed to set watchdog timeout (err = %d)\n",
dev_err(da9063->dev, "Failed to set watchdog timeout (err = %d)\n",
ret);
else
wdd->timeout = wdt_timeout[selector];
@ -123,13 +118,13 @@ static int da9063_wdt_set_timeout(struct watchdog_device *wdd,
static int da9063_wdt_restart(struct watchdog_device *wdd, unsigned long action,
void *data)
{
struct da9063_watchdog *wdt = watchdog_get_drvdata(wdd);
struct da9063 *da9063 = watchdog_get_drvdata(wdd);
int ret;
ret = regmap_write(wdt->da9063->regmap, DA9063_REG_CONTROL_F,
ret = regmap_write(da9063->regmap, DA9063_REG_CONTROL_F,
DA9063_SHUTDOWN);
if (ret)
dev_alert(wdt->da9063->dev, "Failed to shutdown (err = %d)\n",
dev_alert(da9063->dev, "Failed to shutdown (err = %d)\n",
ret);
return ret;
@ -152,7 +147,7 @@ static const struct watchdog_ops da9063_watchdog_ops = {
static int da9063_wdt_probe(struct platform_device *pdev)
{
struct da9063 *da9063;
struct da9063_watchdog *wdt;
struct watchdog_device *wdd;
if (!pdev->dev.parent)
return -EINVAL;
@ -161,27 +156,25 @@ static int da9063_wdt_probe(struct platform_device *pdev)
if (!da9063)
return -EINVAL;
wdt = devm_kzalloc(&pdev->dev, sizeof(*wdt), GFP_KERNEL);
if (!wdt)
wdd = devm_kzalloc(&pdev->dev, sizeof(*wdd), GFP_KERNEL);
if (!wdd)
return -ENOMEM;
wdt->da9063 = da9063;
wdd->info = &da9063_watchdog_info;
wdd->ops = &da9063_watchdog_ops;
wdd->min_timeout = DA9063_WDT_MIN_TIMEOUT;
wdd->max_timeout = DA9063_WDT_MAX_TIMEOUT;
wdd->min_hw_heartbeat_ms = DA9063_RESET_PROTECTION_MS;
wdd->timeout = DA9063_WDG_TIMEOUT;
wdd->parent = &pdev->dev;
wdt->wdtdev.info = &da9063_watchdog_info;
wdt->wdtdev.ops = &da9063_watchdog_ops;
wdt->wdtdev.min_timeout = DA9063_WDT_MIN_TIMEOUT;
wdt->wdtdev.max_timeout = DA9063_WDT_MAX_TIMEOUT;
wdt->wdtdev.min_hw_heartbeat_ms = DA9063_RESET_PROTECTION_MS;
wdt->wdtdev.timeout = DA9063_WDG_TIMEOUT;
wdt->wdtdev.parent = &pdev->dev;
wdd->status = WATCHDOG_NOWAYOUT_INIT_STATUS;
wdt->wdtdev.status = WATCHDOG_NOWAYOUT_INIT_STATUS;
watchdog_set_restart_priority(wdd, 128);
watchdog_set_restart_priority(&wdt->wdtdev, 128);
watchdog_set_drvdata(wdd, da9063);
watchdog_set_drvdata(&wdt->wdtdev, wdt);
return devm_watchdog_register_device(&pdev->dev, &wdt->wdtdev);
return devm_watchdog_register_device(&pdev->dev, wdd);
}
static struct platform_driver da9063_wdt_driver = {