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  3. [PATCH v1 0/3] pinctrl: th1520: Unbreak the driver
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[PATCH v1 3/3] pinctrl: th1520: Factor out casts

Emil Renner Berthing posted 3 patches 1 month, 2 weeks ago
[PATCH v1 3/3] pinctrl: th1520: Factor out casts
Posted by Emil Renner Berthing 1 month, 2 weeks ago 
Limit the casts to get the mux data and flags from the driver data
pointer with each pin to two inline functions as requested by Andy
during review.

Signed-off-by: Emil Renner Berthing <emil.renner.berthing@canonical.com>
---
 drivers/pinctrl/pinctrl-th1520.c | 22 +++++++++++++++++-----
 1 file changed, 17 insertions(+), 5 deletions(-)

diff --git a/drivers/pinctrl/pinctrl-th1520.c b/drivers/pinctrl/pinctrl-th1520.c
index 8bd40cb2f013..7474d8da32f9 100644
--- a/drivers/pinctrl/pinctrl-th1520.c
+++ b/drivers/pinctrl/pinctrl-th1520.c
@@ -152,6 +152,16 @@ static enum th1520_muxtype th1520_muxtype_get(const char *str)
 		(TH1520_MUX_##m0 <<  0) | (TH1520_MUX_##m1 <<  5) | (TH1520_MUX_##m2 << 10) | \
 		(TH1520_MUX_##m3 << 15) | (TH1520_MUX_##m4 << 20) | (TH1520_MUX_##m5 << 25)) }
 
+static unsigned long th1520_pad_muxdata(void *drv_data)
+{
+	return (uintptr_t)drv_data & TH1520_PAD_MUXDATA;
+}
+
+static bool th1520_pad_no_padcfg(void *drv_data)
+{
+	return (uintptr_t)drv_data & TH1520_PAD_NO_PADCFG;
+}
+
 static const struct pinctrl_pin_desc th1520_group1_pins[] = {
 	TH1520_PAD(0,  OSC_CLK_IN,    ____, ____, ____, ____, ____, ____, TH1520_PAD_NO_PADCFG),
 	TH1520_PAD(1,  OSC_CLK_OUT,   ____, ____, ____, ____, ____, ____, TH1520_PAD_NO_PADCFG),
@@ -590,7 +600,7 @@ static int th1520_pinconf_get(struct pinctrl_dev *pctldev,
 	u32 value;
 	u32 arg;
 
-	if ((uintptr_t)desc->drv_data & TH1520_PAD_NO_PADCFG)
+	if (th1520_pad_no_padcfg(desc->drv_data))
 		return -ENOTSUPP;
 
 	value = readl_relaxed(th1520_padcfg(thp, pin));
@@ -660,7 +670,7 @@ static int th1520_pinconf_set(struct pinctrl_dev *pctldev, unsigned int pin,
 	unsigned int i;
 	u16 mask, value;
 
-	if ((uintptr_t)desc->drv_data & TH1520_PAD_NO_PADCFG)
+	if (th1520_pad_no_padcfg(desc->drv_data))
 		return -ENOTSUPP;
 
 	mask = 0;
@@ -793,12 +803,14 @@ static int th1520_pinmux_set_mux(struct pinctrl_dev *pctldev,
 {
 	struct th1520_pinctrl *thp = pinctrl_dev_get_drvdata(pctldev);
 	const struct function_desc *func = pinmux_generic_get_function(pctldev, fsel);
+	enum th1520_muxtype muxtype = (uintptr_t)func->data;
 
 	if (!func)
 		return -EINVAL;
+
 	return th1520_pinmux_set(thp, thp->desc.pins[gsel].number,
-				 (uintptr_t)thp->desc.pins[gsel].drv_data & TH1520_PAD_MUXDATA,
-				 (uintptr_t)func->data);
+				 th1520_pad_muxdata(thp->desc.pins[gsel].drv_data),
+				 muxtype);
 }
 
 static int th1520_gpio_request_enable(struct pinctrl_dev *pctldev,
@@ -809,7 +821,7 @@ static int th1520_gpio_request_enable(struct pinctrl_dev *pctldev,
 	const struct pin_desc *desc = pin_desc_get(pctldev, offset);
 
 	return th1520_pinmux_set(thp, offset,
-				 (uintptr_t)desc->drv_data & TH1520_PAD_MUXDATA,
+				 th1520_pad_muxdata(desc->drv_data),
 				 TH1520_MUX_GPIO);
 }
 
-- 
2.43.0
Re: [PATCH v1 3/3] pinctrl: th1520: Factor out casts
Posted by Kees Bakker 1 month, 1 week ago 
Op 11-10-2024 om 16:48 schreef Emil Renner Berthing:
> Limit the casts to get the mux data and flags from the driver data
> pointer with each pin to two inline functions as requested by Andy
> during review.
>
> Signed-off-by: Emil Renner Berthing <emil.renner.berthing@canonical.com>
> ---
>   drivers/pinctrl/pinctrl-th1520.c | 22 +++++++++++++++++-----
>   1 file changed, 17 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/pinctrl/pinctrl-th1520.c b/drivers/pinctrl/pinctrl-th1520.c
> index 8bd40cb2f013..7474d8da32f9 100644
> --- a/drivers/pinctrl/pinctrl-th1520.c
> +++ b/drivers/pinctrl/pinctrl-th1520.c
> @@ -152,6 +152,16 @@ static enum th1520_muxtype th1520_muxtype_get(const char *str)
>   		(TH1520_MUX_##m0 <<  0) | (TH1520_MUX_##m1 <<  5) | (TH1520_MUX_##m2 << 10) | \
>   		(TH1520_MUX_##m3 << 15) | (TH1520_MUX_##m4 << 20) | (TH1520_MUX_##m5 << 25)) }
>   
> +static unsigned long th1520_pad_muxdata(void *drv_data)
> +{
> +	return (uintptr_t)drv_data & TH1520_PAD_MUXDATA;
> +}
> +
> +static bool th1520_pad_no_padcfg(void *drv_data)
> +{
> +	return (uintptr_t)drv_data & TH1520_PAD_NO_PADCFG;
> +}
> +
>   static const struct pinctrl_pin_desc th1520_group1_pins[] = {
>   	TH1520_PAD(0,  OSC_CLK_IN,    ____, ____, ____, ____, ____, ____, TH1520_PAD_NO_PADCFG),
>   	TH1520_PAD(1,  OSC_CLK_OUT,   ____, ____, ____, ____, ____, ____, TH1520_PAD_NO_PADCFG),
> @@ -590,7 +600,7 @@ static int th1520_pinconf_get(struct pinctrl_dev *pctldev,
>   	u32 value;
>   	u32 arg;
>   
> -	if ((uintptr_t)desc->drv_data & TH1520_PAD_NO_PADCFG)
> +	if (th1520_pad_no_padcfg(desc->drv_data))
>   		return -ENOTSUPP;
>   
>   	value = readl_relaxed(th1520_padcfg(thp, pin));
> @@ -660,7 +670,7 @@ static int th1520_pinconf_set(struct pinctrl_dev *pctldev, unsigned int pin,
>   	unsigned int i;
>   	u16 mask, value;
>   
> -	if ((uintptr_t)desc->drv_data & TH1520_PAD_NO_PADCFG)
> +	if (th1520_pad_no_padcfg(desc->drv_data))
>   		return -ENOTSUPP;
>   
>   	mask = 0;
> @@ -793,12 +803,14 @@ static int th1520_pinmux_set_mux(struct pinctrl_dev *pctldev,
>   {
>   	struct th1520_pinctrl *thp = pinctrl_dev_get_drvdata(pctldev);
>   	const struct function_desc *func = pinmux_generic_get_function(pctldev, fsel);
> +	enum th1520_muxtype muxtype = (uintptr_t)func->data;
You cannot use func before checking for NULL (see if statement below)
>   
>   	if (!func)
>   		return -EINVAL;
> +
>   	return th1520_pinmux_set(thp, thp->desc.pins[gsel].number,
> -				 (uintptr_t)thp->desc.pins[gsel].drv_data & TH1520_PAD_MUXDATA,
> -				 (uintptr_t)func->data);
> +				 th1520_pad_muxdata(thp->desc.pins[gsel].drv_data),
> +				 muxtype);
>   }
>   
>   static int th1520_gpio_request_enable(struct pinctrl_dev *pctldev,
> @@ -809,7 +821,7 @@ static int th1520_gpio_request_enable(struct pinctrl_dev *pctldev,
>   	const struct pin_desc *desc = pin_desc_get(pctldev, offset);
>   
>   	return th1520_pinmux_set(thp, offset,
> -				 (uintptr_t)desc->drv_data & TH1520_PAD_MUXDATA,
> +				 th1520_pad_muxdata(desc->drv_data),
>   				 TH1520_MUX_GPIO);
>   }
>
Re: [PATCH v1 3/3] pinctrl: th1520: Factor out casts
Posted by Drew Fustini 1 month, 2 weeks ago 
On Fri, Oct 11, 2024 at 04:48:25PM +0200, Emil Renner Berthing wrote:
> Limit the casts to get the mux data and flags from the driver data
> pointer with each pin to two inline functions as requested by Andy
> during review.
> 
> Signed-off-by: Emil Renner Berthing <emil.renner.berthing@canonical.com>
> ---
>  drivers/pinctrl/pinctrl-th1520.c | 22 +++++++++++++++++-----
>  1 file changed, 17 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/pinctrl/pinctrl-th1520.c b/drivers/pinctrl/pinctrl-th1520.c
> index 8bd40cb2f013..7474d8da32f9 100644
> --- a/drivers/pinctrl/pinctrl-th1520.c
> +++ b/drivers/pinctrl/pinctrl-th1520.c
> @@ -152,6 +152,16 @@ static enum th1520_muxtype th1520_muxtype_get(const char *str)
>  		(TH1520_MUX_##m0 <<  0) | (TH1520_MUX_##m1 <<  5) | (TH1520_MUX_##m2 << 10) | \
>  		(TH1520_MUX_##m3 << 15) | (TH1520_MUX_##m4 << 20) | (TH1520_MUX_##m5 << 25)) }
>  
> +static unsigned long th1520_pad_muxdata(void *drv_data)
> +{
> +	return (uintptr_t)drv_data & TH1520_PAD_MUXDATA;
> +}
> +
> +static bool th1520_pad_no_padcfg(void *drv_data)
> +{
> +	return (uintptr_t)drv_data & TH1520_PAD_NO_PADCFG;
> +}
> +
>  static const struct pinctrl_pin_desc th1520_group1_pins[] = {
>  	TH1520_PAD(0,  OSC_CLK_IN,    ____, ____, ____, ____, ____, ____, TH1520_PAD_NO_PADCFG),
>  	TH1520_PAD(1,  OSC_CLK_OUT,   ____, ____, ____, ____, ____, ____, TH1520_PAD_NO_PADCFG),
> @@ -590,7 +600,7 @@ static int th1520_pinconf_get(struct pinctrl_dev *pctldev,
>  	u32 value;
>  	u32 arg;
>  
> -	if ((uintptr_t)desc->drv_data & TH1520_PAD_NO_PADCFG)
> +	if (th1520_pad_no_padcfg(desc->drv_data))
>  		return -ENOTSUPP;
>  
>  	value = readl_relaxed(th1520_padcfg(thp, pin));
> @@ -660,7 +670,7 @@ static int th1520_pinconf_set(struct pinctrl_dev *pctldev, unsigned int pin,
>  	unsigned int i;
>  	u16 mask, value;
>  
> -	if ((uintptr_t)desc->drv_data & TH1520_PAD_NO_PADCFG)
> +	if (th1520_pad_no_padcfg(desc->drv_data))
>  		return -ENOTSUPP;
>  
>  	mask = 0;
> @@ -793,12 +803,14 @@ static int th1520_pinmux_set_mux(struct pinctrl_dev *pctldev,
>  {
>  	struct th1520_pinctrl *thp = pinctrl_dev_get_drvdata(pctldev);
>  	const struct function_desc *func = pinmux_generic_get_function(pctldev, fsel);
> +	enum th1520_muxtype muxtype = (uintptr_t)func->data;
>  
>  	if (!func)
>  		return -EINVAL;
> +
>  	return th1520_pinmux_set(thp, thp->desc.pins[gsel].number,
> -				 (uintptr_t)thp->desc.pins[gsel].drv_data & TH1520_PAD_MUXDATA,
> -				 (uintptr_t)func->data);
> +				 th1520_pad_muxdata(thp->desc.pins[gsel].drv_data),
> +				 muxtype);
>  }
>  
>  static int th1520_gpio_request_enable(struct pinctrl_dev *pctldev,
> @@ -809,7 +821,7 @@ static int th1520_gpio_request_enable(struct pinctrl_dev *pctldev,
>  	const struct pin_desc *desc = pin_desc_get(pctldev, offset);
>  
>  	return th1520_pinmux_set(thp, offset,
> -				 (uintptr_t)desc->drv_data & TH1520_PAD_MUXDATA,
> +				 th1520_pad_muxdata(desc->drv_data),
>  				 TH1520_MUX_GPIO);
>  }
>  
> -- 
> 2.43.0
> 

Reviewed-by: Drew Fustini <dfustini@tenstorrent.com>

Thanks for improving this. I see the feedback from Andy [1] on your v2
now that you mention it.

-Drew

[1] https://lore.kernel.org/linux-gpio/Zj8K_0zpI_IAY66R@surfacebook.localdomain/

Patchew 2.1-devel-b67e4c2

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