| Message ID | 20230802033222.4024946-3-huqiang.qin@amlogic.com |
|---|---|
| State | New |
| Headers | show |
| Series | Add watchdog support for Amlogic-T7 SoCs | expand |
On Wed, Aug 02, 2023 at 11:32:20AM +0800, Huqiang Qin wrote: > Add a new structure wdt_params to describe the watchdog difference > of different chips. > > Signed-off-by: Huqiang Qin <huqiang.qin@amlogic.com> > Reviewed-by: Dmitry Rokosov <ddrokosov@sberdevices.ru> Reviewed-by: Guenter Roeck <linux@roeck-us.net> > --- > > V1 -> V2: Rename rst_shift to rst and use the BIT() macro to build > its initial value. > > drivers/watchdog/meson_gxbb_wdt.c | 16 +++++++++++++--- > 1 file changed, 13 insertions(+), 3 deletions(-) > > diff --git a/drivers/watchdog/meson_gxbb_wdt.c b/drivers/watchdog/meson_gxbb_wdt.c > index 35d80cb39856..18180d91543e 100644 > --- a/drivers/watchdog/meson_gxbb_wdt.c > +++ b/drivers/watchdog/meson_gxbb_wdt.c > @@ -22,7 +22,6 @@ > > #define GXBB_WDT_CTRL_CLKDIV_EN BIT(25) > #define GXBB_WDT_CTRL_CLK_EN BIT(24) > -#define GXBB_WDT_CTRL_EE_RESET BIT(21) > #define GXBB_WDT_CTRL_EN BIT(18) > #define GXBB_WDT_CTRL_DIV_MASK (BIT(18) - 1) > > @@ -45,6 +44,10 @@ struct meson_gxbb_wdt { > struct clk *clk; > }; > > +struct wdt_params { > + u32 rst; > +}; > + > static int meson_gxbb_wdt_start(struct watchdog_device *wdt_dev) > { > struct meson_gxbb_wdt *data = watchdog_get_drvdata(wdt_dev); > @@ -140,8 +143,12 @@ static const struct dev_pm_ops meson_gxbb_wdt_pm_ops = { > SET_SYSTEM_SLEEP_PM_OPS(meson_gxbb_wdt_suspend, meson_gxbb_wdt_resume) > }; > > +static const struct wdt_params gxbb_params = { > + .rst = BIT(21), > +}; > + > static const struct of_device_id meson_gxbb_wdt_dt_ids[] = { > - { .compatible = "amlogic,meson-gxbb-wdt", }, > + { .compatible = "amlogic,meson-gxbb-wdt", .data = &gxbb_params, }, > { /* sentinel */ }, > }; > MODULE_DEVICE_TABLE(of, meson_gxbb_wdt_dt_ids); > @@ -150,6 +157,7 @@ static int meson_gxbb_wdt_probe(struct platform_device *pdev) > { > struct device *dev = &pdev->dev; > struct meson_gxbb_wdt *data; > + struct wdt_params *params; > u32 ctrl_reg; > > data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL); > @@ -164,6 +172,8 @@ static int meson_gxbb_wdt_probe(struct platform_device *pdev) > if (IS_ERR(data->clk)) > return PTR_ERR(data->clk); > > + params = (struct wdt_params *)of_device_get_match_data(dev); > + > platform_set_drvdata(pdev, data); > > data->wdt_dev.parent = dev; > @@ -191,7 +201,7 @@ static int meson_gxbb_wdt_probe(struct platform_device *pdev) > /* Setup with 1ms timebase */ > ctrl_reg |= ((clk_get_rate(data->clk) / 1000) & > GXBB_WDT_CTRL_DIV_MASK) | > - GXBB_WDT_CTRL_EE_RESET | > + params->rst | > GXBB_WDT_CTRL_CLK_EN | > GXBB_WDT_CTRL_CLKDIV_EN; >
diff --git a/drivers/watchdog/meson_gxbb_wdt.c b/drivers/watchdog/meson_gxbb_wdt.c index 35d80cb39856..18180d91543e 100644 --- a/drivers/watchdog/meson_gxbb_wdt.c +++ b/drivers/watchdog/meson_gxbb_wdt.c @@ -22,7 +22,6 @@ #define GXBB_WDT_CTRL_CLKDIV_EN BIT(25) #define GXBB_WDT_CTRL_CLK_EN BIT(24) -#define GXBB_WDT_CTRL_EE_RESET BIT(21) #define GXBB_WDT_CTRL_EN BIT(18) #define GXBB_WDT_CTRL_DIV_MASK (BIT(18) - 1) @@ -45,6 +44,10 @@ struct meson_gxbb_wdt { struct clk *clk; }; +struct wdt_params { + u32 rst; +}; + static int meson_gxbb_wdt_start(struct watchdog_device *wdt_dev) { struct meson_gxbb_wdt *data = watchdog_get_drvdata(wdt_dev); @@ -140,8 +143,12 @@ static const struct dev_pm_ops meson_gxbb_wdt_pm_ops = { SET_SYSTEM_SLEEP_PM_OPS(meson_gxbb_wdt_suspend, meson_gxbb_wdt_resume) }; +static const struct wdt_params gxbb_params = { + .rst = BIT(21), +}; + static const struct of_device_id meson_gxbb_wdt_dt_ids[] = { - { .compatible = "amlogic,meson-gxbb-wdt", }, + { .compatible = "amlogic,meson-gxbb-wdt", .data = &gxbb_params, }, { /* sentinel */ }, }; MODULE_DEVICE_TABLE(of, meson_gxbb_wdt_dt_ids); @@ -150,6 +157,7 @@ static int meson_gxbb_wdt_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct meson_gxbb_wdt *data; + struct wdt_params *params; u32 ctrl_reg; data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL); @@ -164,6 +172,8 @@ static int meson_gxbb_wdt_probe(struct platform_device *pdev) if (IS_ERR(data->clk)) return PTR_ERR(data->clk); + params = (struct wdt_params *)of_device_get_match_data(dev); + platform_set_drvdata(pdev, data); data->wdt_dev.parent = dev; @@ -191,7 +201,7 @@ static int meson_gxbb_wdt_probe(struct platform_device *pdev) /* Setup with 1ms timebase */ ctrl_reg |= ((clk_get_rate(data->clk) / 1000) & GXBB_WDT_CTRL_DIV_MASK) | - GXBB_WDT_CTRL_EE_RESET | + params->rst | GXBB_WDT_CTRL_CLK_EN | GXBB_WDT_CTRL_CLKDIV_EN;
Add a new structure wdt_params to describe the watchdog difference of different chips. Signed-off-by: Huqiang Qin <huqiang.qin@amlogic.com> --- V1 -> V2: Rename rst_shift to rst and use the BIT() macro to build its initial value. drivers/watchdog/meson_gxbb_wdt.c | 16 +++++++++++++--- 1 file changed, 13 insertions(+), 3 deletions(-)