diff mbox series

[v4,1/1] watchdog: imx7ulp_wdt: move post_rcs_wait into struct imx_wdt_hw_feature

Message ID 20240729200601.1995387-1-Frank.Li@nxp.com (mailing list archive)
State New
Headers show
Series [v4,1/1] watchdog: imx7ulp_wdt: move post_rcs_wait into struct imx_wdt_hw_feature | expand

Commit Message

Frank Li July 29, 2024, 8:06 p.m. UTC 
Move post_rcs_wait into struct imx_wdt_hw_feature to simple code logic for
difference compatible string.

i.MX93 watchdog needn't wait 2.5 clocks after RCS is done. So needn't set
post_rcs_wait.

Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Alice Guo <alice.guo@nxp.com>
Reviewed-by: Ye Li <ye.li@nxp.com>
Signed-off-by: Frank Li <Frank.Li@nxp.com>
---
Chagne from v3 to v4:
- Go back to v2 according to Guenter's feedback
Change from v2 to v3:
- Set post_rcs_wait to false explicitly to maintain code consistency
- Add Guenter review tag.
Change from v1 to v2:
- Combine to one patch
---
 drivers/watchdog/imx7ulp_wdt.c | 21 +++++++++------------
 1 file changed, 9 insertions(+), 12 deletions(-)

Comments

Christophe JAILLET July 29, 2024, 9:12 p.m. UTC | #1 
Le 29/07/2024 à 22:06, Frank Li a écrit :
> Move post_rcs_wait into struct imx_wdt_hw_feature to simple code logic for
> difference compatible string.
> 
> i.MX93 watchdog needn't wait 2.5 clocks after RCS is done. So needn't set
> post_rcs_wait.
> 
> Reviewed-by: Guenter Roeck <linux-0h96xk9xTtrk1uMJSBkQmQ@public.gmane.org>
> Signed-off-by: Alice Guo <alice.guo-3arQi8VN3Tc@public.gmane.org>
> Reviewed-by: Ye Li <ye.li-3arQi8VN3Tc@public.gmane.org>
> Signed-off-by: Frank Li <Frank.Li-3arQi8VN3Tc@public.gmane.org>
> ---
> Chagne from v3 to v4:
> - Go back to v2 according to Guenter's feedback
> Change from v2 to v3:
> - Set post_rcs_wait to false explicitly to maintain code consistency
> - Add Guenter review tag.
> Change from v1 to v2:
> - Combine to one patch
> ---
>   drivers/watchdog/imx7ulp_wdt.c | 21 +++++++++------------
>   1 file changed, 9 insertions(+), 12 deletions(-)
> 
> diff --git a/drivers/watchdog/imx7ulp_wdt.c b/drivers/watchdog/imx7ulp_wdt.c
> index 94914a22daff7..3a75a6f98f8f0 100644
> --- a/drivers/watchdog/imx7ulp_wdt.c
> +++ b/drivers/watchdog/imx7ulp_wdt.c
> @@ -55,6 +55,7 @@ MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default="
>   
>   struct imx_wdt_hw_feature {
>   	bool prescaler_enable;
> +	bool post_rcs_wait;
>   	u32 wdog_clock_rate;
>   };
>   
> @@ -62,7 +63,6 @@ struct imx7ulp_wdt_device {
>   	struct watchdog_device wdd;
>   	void __iomem *base;
>   	struct clk *clk;
> -	bool post_rcs_wait;
>   	bool ext_reset;
>   	const struct imx_wdt_hw_feature *hw;
>   };
> @@ -95,7 +95,7 @@ static int imx7ulp_wdt_wait_rcs(struct imx7ulp_wdt_device *wdt)
>   		ret = -ETIMEDOUT;
>   
>   	/* Wait 2.5 clocks after RCS done */
> -	if (wdt->post_rcs_wait)
> +	if (wdt->hw->post_rcs_wait)
>   		usleep_range(wait_min, wait_min + 2000);
>   
>   	return ret;
> @@ -334,15 +334,6 @@ static int imx7ulp_wdt_probe(struct platform_device *pdev)
>   	/* The WDOG may need to do external reset through dedicated pin */
>   	imx7ulp_wdt->ext_reset = of_property_read_bool(dev->of_node, "fsl,ext-reset-output");
>   
> -	imx7ulp_wdt->post_rcs_wait = true;
> -	if (of_device_is_compatible(dev->of_node,
> -				    "fsl,imx8ulp-wdt")) {
> -		dev_info(dev, "imx8ulp wdt probe\n");
> -		imx7ulp_wdt->post_rcs_wait = false;
> -	} else {
> -		dev_info(dev, "imx7ulp wdt probe\n");
> -	}
> -
>   	wdog = &imx7ulp_wdt->wdd;
>   	wdog->info = &imx7ulp_wdt_info;
>   	wdog->ops = &imx7ulp_wdt_ops;
> @@ -403,6 +394,12 @@ static const struct dev_pm_ops imx7ulp_wdt_pm_ops = {
>   static const struct imx_wdt_hw_feature imx7ulp_wdt_hw = {
>   	.prescaler_enable = false,
>   	.wdog_clock_rate = 1000,
> +	.post_rcs_wait = true,
> +};
> +
> +static const struct imx_wdt_hw_feature imx8ulp_wdt_hw = {
> +	.prescaler_enable = false,
> +	.wdog_clock_rate = 1000,
>   };
>   
>   static const struct imx_wdt_hw_feature imx93_wdt_hw = {
> @@ -411,7 +408,7 @@ static const struct imx_wdt_hw_feature imx93_wdt_hw = {
>   };
>   
>   static const struct of_device_id imx7ulp_wdt_dt_ids[] = {
> -	{ .compatible = "fsl,imx8ulp-wdt", .data = &imx7ulp_wdt_hw, },
> +	{ .compatible = "fsl,imx8ulp-wdt", .data = &imx8ulp_wdt_hw, },

Nitpick: while touching something here, should imx8ulp be after imx7ulp?

CJ

>   	{ .compatible = "fsl,imx7ulp-wdt", .data = &imx7ulp_wdt_hw, },
>   	{ .compatible = "fsl,imx93-wdt", .data = &imx93_wdt_hw, },
>   	{ /* sentinel */ }
Frank Li July 29, 2024, 9:16 p.m. UTC | #2 
On Mon, Jul 29, 2024 at 11:12:13PM +0200, Christophe JAILLET wrote:
> Le 29/07/2024 à 22:06, Frank Li a écrit :
> > Move post_rcs_wait into struct imx_wdt_hw_feature to simple code logic for
> > difference compatible string.
> > 
> > i.MX93 watchdog needn't wait 2.5 clocks after RCS is done. So needn't set
> > post_rcs_wait.
> > 
> > Reviewed-by: Guenter Roeck <linux-0h96xk9xTtrk1uMJSBkQmQ@public.gmane.org>
> > Signed-off-by: Alice Guo <alice.guo-3arQi8VN3Tc@public.gmane.org>
> > Reviewed-by: Ye Li <ye.li-3arQi8VN3Tc@public.gmane.org>
> > Signed-off-by: Frank Li <Frank.Li-3arQi8VN3Tc@public.gmane.org>
> > ---
> > Chagne from v3 to v4:
> > - Go back to v2 according to Guenter's feedback
> > Change from v2 to v3:
> > - Set post_rcs_wait to false explicitly to maintain code consistency
> > - Add Guenter review tag.
> > Change from v1 to v2:
> > - Combine to one patch
> > ---
> >   drivers/watchdog/imx7ulp_wdt.c | 21 +++++++++------------
> >   1 file changed, 9 insertions(+), 12 deletions(-)
> > 
> > diff --git a/drivers/watchdog/imx7ulp_wdt.c b/drivers/watchdog/imx7ulp_wdt.c
> > index 94914a22daff7..3a75a6f98f8f0 100644
> > --- a/drivers/watchdog/imx7ulp_wdt.c
> > +++ b/drivers/watchdog/imx7ulp_wdt.c
> > @@ -55,6 +55,7 @@ MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default="
> >   struct imx_wdt_hw_feature {
> >   	bool prescaler_enable;
> > +	bool post_rcs_wait;
> >   	u32 wdog_clock_rate;
> >   };
> > @@ -62,7 +63,6 @@ struct imx7ulp_wdt_device {
> >   	struct watchdog_device wdd;
> >   	void __iomem *base;
> >   	struct clk *clk;
> > -	bool post_rcs_wait;
> >   	bool ext_reset;
> >   	const struct imx_wdt_hw_feature *hw;
> >   };
> > @@ -95,7 +95,7 @@ static int imx7ulp_wdt_wait_rcs(struct imx7ulp_wdt_device *wdt)
> >   		ret = -ETIMEDOUT;
> >   	/* Wait 2.5 clocks after RCS done */
> > -	if (wdt->post_rcs_wait)
> > +	if (wdt->hw->post_rcs_wait)
> >   		usleep_range(wait_min, wait_min + 2000);
> >   	return ret;
> > @@ -334,15 +334,6 @@ static int imx7ulp_wdt_probe(struct platform_device *pdev)
> >   	/* The WDOG may need to do external reset through dedicated pin */
> >   	imx7ulp_wdt->ext_reset = of_property_read_bool(dev->of_node, "fsl,ext-reset-output");
> > -	imx7ulp_wdt->post_rcs_wait = true;
> > -	if (of_device_is_compatible(dev->of_node,
> > -				    "fsl,imx8ulp-wdt")) {
> > -		dev_info(dev, "imx8ulp wdt probe\n");
> > -		imx7ulp_wdt->post_rcs_wait = false;
> > -	} else {
> > -		dev_info(dev, "imx7ulp wdt probe\n");
> > -	}
> > -
> >   	wdog = &imx7ulp_wdt->wdd;
> >   	wdog->info = &imx7ulp_wdt_info;
> >   	wdog->ops = &imx7ulp_wdt_ops;
> > @@ -403,6 +394,12 @@ static const struct dev_pm_ops imx7ulp_wdt_pm_ops = {
> >   static const struct imx_wdt_hw_feature imx7ulp_wdt_hw = {
> >   	.prescaler_enable = false,
> >   	.wdog_clock_rate = 1000,
> > +	.post_rcs_wait = true,
> > +};
> > +
> > +static const struct imx_wdt_hw_feature imx8ulp_wdt_hw = {
> > +	.prescaler_enable = false,
> > +	.wdog_clock_rate = 1000,
> >   };
> >   static const struct imx_wdt_hw_feature imx93_wdt_hw = {
> > @@ -411,7 +408,7 @@ static const struct imx_wdt_hw_feature imx93_wdt_hw = {
> >   };
> >   static const struct of_device_id imx7ulp_wdt_dt_ids[] = {
> > -	{ .compatible = "fsl,imx8ulp-wdt", .data = &imx7ulp_wdt_hw, },
> > +	{ .compatible = "fsl,imx8ulp-wdt", .data = &imx8ulp_wdt_hw, },
> 
> Nitpick: while touching something here, should imx8ulp be after imx7ulp?

Yes, it should be better. 

Guenter: do you think it is okay to move it after 7ulp?

Frank

> 
> CJ
> 
> >   	{ .compatible = "fsl,imx7ulp-wdt", .data = &imx7ulp_wdt_hw, },
> >   	{ .compatible = "fsl,imx93-wdt", .data = &imx93_wdt_hw, },
> >   	{ /* sentinel */ }
>
Guenter Roeck July 29, 2024, 9:51 p.m. UTC | #3 
On 7/29/24 14:16, Frank Li wrote:
> On Mon, Jul 29, 2024 at 11:12:13PM +0200, Christophe JAILLET wrote:
>> Le 29/07/2024 à 22:06, Frank Li a écrit :
>>> Move post_rcs_wait into struct imx_wdt_hw_feature to simple code logic for
>>> difference compatible string.
>>>
>>> i.MX93 watchdog needn't wait 2.5 clocks after RCS is done. So needn't set
>>> post_rcs_wait.
>>>
>>> Reviewed-by: Guenter Roeck <linux-0h96xk9xTtrk1uMJSBkQmQ@public.gmane.org>
>>> Signed-off-by: Alice Guo <alice.guo-3arQi8VN3Tc@public.gmane.org>
>>> Reviewed-by: Ye Li <ye.li-3arQi8VN3Tc@public.gmane.org>
>>> Signed-off-by: Frank Li <Frank.Li-3arQi8VN3Tc@public.gmane.org>
>>> ---
>>> Chagne from v3 to v4:
>>> - Go back to v2 according to Guenter's feedback
>>> Change from v2 to v3:
>>> - Set post_rcs_wait to false explicitly to maintain code consistency
>>> - Add Guenter review tag.
>>> Change from v1 to v2:
>>> - Combine to one patch
>>> ---
>>>    drivers/watchdog/imx7ulp_wdt.c | 21 +++++++++------------
>>>    1 file changed, 9 insertions(+), 12 deletions(-)
>>>
>>> diff --git a/drivers/watchdog/imx7ulp_wdt.c b/drivers/watchdog/imx7ulp_wdt.c
>>> index 94914a22daff7..3a75a6f98f8f0 100644
>>> --- a/drivers/watchdog/imx7ulp_wdt.c
>>> +++ b/drivers/watchdog/imx7ulp_wdt.c
>>> @@ -55,6 +55,7 @@ MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default="
>>>    struct imx_wdt_hw_feature {
>>>    	bool prescaler_enable;
>>> +	bool post_rcs_wait;
>>>    	u32 wdog_clock_rate;
>>>    };
>>> @@ -62,7 +63,6 @@ struct imx7ulp_wdt_device {
>>>    	struct watchdog_device wdd;
>>>    	void __iomem *base;
>>>    	struct clk *clk;
>>> -	bool post_rcs_wait;
>>>    	bool ext_reset;
>>>    	const struct imx_wdt_hw_feature *hw;
>>>    };
>>> @@ -95,7 +95,7 @@ static int imx7ulp_wdt_wait_rcs(struct imx7ulp_wdt_device *wdt)
>>>    		ret = -ETIMEDOUT;
>>>    	/* Wait 2.5 clocks after RCS done */
>>> -	if (wdt->post_rcs_wait)
>>> +	if (wdt->hw->post_rcs_wait)
>>>    		usleep_range(wait_min, wait_min + 2000);
>>>    	return ret;
>>> @@ -334,15 +334,6 @@ static int imx7ulp_wdt_probe(struct platform_device *pdev)
>>>    	/* The WDOG may need to do external reset through dedicated pin */
>>>    	imx7ulp_wdt->ext_reset = of_property_read_bool(dev->of_node, "fsl,ext-reset-output");
>>> -	imx7ulp_wdt->post_rcs_wait = true;
>>> -	if (of_device_is_compatible(dev->of_node,
>>> -				    "fsl,imx8ulp-wdt")) {
>>> -		dev_info(dev, "imx8ulp wdt probe\n");
>>> -		imx7ulp_wdt->post_rcs_wait = false;
>>> -	} else {
>>> -		dev_info(dev, "imx7ulp wdt probe\n");
>>> -	}
>>> -
>>>    	wdog = &imx7ulp_wdt->wdd;
>>>    	wdog->info = &imx7ulp_wdt_info;
>>>    	wdog->ops = &imx7ulp_wdt_ops;
>>> @@ -403,6 +394,12 @@ static const struct dev_pm_ops imx7ulp_wdt_pm_ops = {
>>>    static const struct imx_wdt_hw_feature imx7ulp_wdt_hw = {
>>>    	.prescaler_enable = false,
>>>    	.wdog_clock_rate = 1000,
>>> +	.post_rcs_wait = true,
>>> +};
>>> +
>>> +static const struct imx_wdt_hw_feature imx8ulp_wdt_hw = {
>>> +	.prescaler_enable = false,
>>> +	.wdog_clock_rate = 1000,
>>>    };
>>>    static const struct imx_wdt_hw_feature imx93_wdt_hw = {
>>> @@ -411,7 +408,7 @@ static const struct imx_wdt_hw_feature imx93_wdt_hw = {
>>>    };
>>>    static const struct of_device_id imx7ulp_wdt_dt_ids[] = {
>>> -	{ .compatible = "fsl,imx8ulp-wdt", .data = &imx7ulp_wdt_hw, },
>>> +	{ .compatible = "fsl,imx8ulp-wdt", .data = &imx8ulp_wdt_hw, },
>>
>> Nitpick: while touching something here, should imx8ulp be after imx7ulp?
> 
> Yes, it should be better.
> 
> Guenter: do you think it is okay to move it after 7ulp?
> 
Sure

Guenter

> Frank
> 
>>
>> CJ
>>
>>>    	{ .compatible = "fsl,imx7ulp-wdt", .data = &imx7ulp_wdt_hw, },
>>>    	{ .compatible = "fsl,imx93-wdt", .data = &imx93_wdt_hw, },
>>>    	{ /* sentinel */ }
>>
diff mbox series

Patch

diff --git a/drivers/watchdog/imx7ulp_wdt.c b/drivers/watchdog/imx7ulp_wdt.c
index 94914a22daff7..3a75a6f98f8f0 100644
--- a/drivers/watchdog/imx7ulp_wdt.c
+++ b/drivers/watchdog/imx7ulp_wdt.c
@@ -55,6 +55,7 @@  MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default="
 
 struct imx_wdt_hw_feature {
 	bool prescaler_enable;
+	bool post_rcs_wait;
 	u32 wdog_clock_rate;
 };
 
@@ -62,7 +63,6 @@  struct imx7ulp_wdt_device {
 	struct watchdog_device wdd;
 	void __iomem *base;
 	struct clk *clk;
-	bool post_rcs_wait;
 	bool ext_reset;
 	const struct imx_wdt_hw_feature *hw;
 };
@@ -95,7 +95,7 @@  static int imx7ulp_wdt_wait_rcs(struct imx7ulp_wdt_device *wdt)
 		ret = -ETIMEDOUT;
 
 	/* Wait 2.5 clocks after RCS done */
-	if (wdt->post_rcs_wait)
+	if (wdt->hw->post_rcs_wait)
 		usleep_range(wait_min, wait_min + 2000);
 
 	return ret;
@@ -334,15 +334,6 @@  static int imx7ulp_wdt_probe(struct platform_device *pdev)
 	/* The WDOG may need to do external reset through dedicated pin */
 	imx7ulp_wdt->ext_reset = of_property_read_bool(dev->of_node, "fsl,ext-reset-output");
 
-	imx7ulp_wdt->post_rcs_wait = true;
-	if (of_device_is_compatible(dev->of_node,
-				    "fsl,imx8ulp-wdt")) {
-		dev_info(dev, "imx8ulp wdt probe\n");
-		imx7ulp_wdt->post_rcs_wait = false;
-	} else {
-		dev_info(dev, "imx7ulp wdt probe\n");
-	}
-
 	wdog = &imx7ulp_wdt->wdd;
 	wdog->info = &imx7ulp_wdt_info;
 	wdog->ops = &imx7ulp_wdt_ops;
@@ -403,6 +394,12 @@  static const struct dev_pm_ops imx7ulp_wdt_pm_ops = {
 static const struct imx_wdt_hw_feature imx7ulp_wdt_hw = {
 	.prescaler_enable = false,
 	.wdog_clock_rate = 1000,
+	.post_rcs_wait = true,
+};
+
+static const struct imx_wdt_hw_feature imx8ulp_wdt_hw = {
+	.prescaler_enable = false,
+	.wdog_clock_rate = 1000,
 };
 
 static const struct imx_wdt_hw_feature imx93_wdt_hw = {
@@ -411,7 +408,7 @@  static const struct imx_wdt_hw_feature imx93_wdt_hw = {
 };
 
 static const struct of_device_id imx7ulp_wdt_dt_ids[] = {
-	{ .compatible = "fsl,imx8ulp-wdt", .data = &imx7ulp_wdt_hw, },
+	{ .compatible = "fsl,imx8ulp-wdt", .data = &imx8ulp_wdt_hw, },
 	{ .compatible = "fsl,imx7ulp-wdt", .data = &imx7ulp_wdt_hw, },
 	{ .compatible = "fsl,imx93-wdt", .data = &imx93_wdt_hw, },
 	{ /* sentinel */ }