[PATCH V2 1/3] pinctrl: imx: Use function callbacks for SCU related functions

[PATCH V2 1/3] pinctrl: imx: Use function callbacks for SCU related functions

[Anson Huang]

Use function callbacks for SCU related functions in pinctrl-imx.c
in order to support the scenario of PINCTRL_IMX is built in while
PINCTRL_IMX_SCU is built as module, all drivers using SCU pinctrl
driver need to initialize the SCU related function callback.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
---
Changes since V1:
	- split V1 [1/2] patch to 2 patches, this patch does the change of using function
	  callbacks for SCU related functions.
---
 drivers/pinctrl/freescale/pinctrl-imx.c     |  8 +++----
 drivers/pinctrl/freescale/pinctrl-imx.h     | 37 +++++++++++++++++------------
 drivers/pinctrl/freescale/pinctrl-imx8dxl.c |  3 +++
 drivers/pinctrl/freescale/pinctrl-imx8qm.c  |  3 +++
 drivers/pinctrl/freescale/pinctrl-imx8qxp.c |  3 +++
 5 files changed, 35 insertions(+), 19 deletions(-)

diff --git a/drivers/pinctrl/freescale/pinctrl-imx.c b/drivers/pinctrl/freescale/pinctrl-imx.c
index 507e4af..b80c450 100644
--- a/drivers/pinctrl/freescale/pinctrl-imx.c
+++ b/drivers/pinctrl/freescale/pinctrl-imx.c
@@ -373,7 +373,7 @@ static int imx_pinconf_get(struct pinctrl_dev *pctldev,
 	const struct imx_pinctrl_soc_info *info = ipctl->info;
 
 	if (info->flags & IMX_USE_SCU)
-		return imx_pinconf_get_scu(pctldev, pin_id, config);
+		return info->imx_pinconf_get(pctldev, pin_id, config);
 	else
 		return imx_pinconf_get_mmio(pctldev, pin_id, config);
 }
@@ -423,7 +423,7 @@ static int imx_pinconf_set(struct pinctrl_dev *pctldev,
 	const struct imx_pinctrl_soc_info *info = ipctl->info;
 
 	if (info->flags & IMX_USE_SCU)
-		return imx_pinconf_set_scu(pctldev, pin_id,
+		return info->imx_pinconf_set(pctldev, pin_id,
 					   configs, num_configs);
 	else
 		return imx_pinconf_set_mmio(pctldev, pin_id,
@@ -440,7 +440,7 @@ static void imx_pinconf_dbg_show(struct pinctrl_dev *pctldev,
 	int ret;
 
 	if (info->flags & IMX_USE_SCU) {
-		ret = imx_pinconf_get_scu(pctldev, pin_id, &config);
+		ret = info->imx_pinconf_get(pctldev, pin_id, &config);
 		if (ret) {
 			dev_err(ipctl->dev, "failed to get %s pinconf\n",
 				pin_get_name(pctldev, pin_id));
@@ -629,7 +629,7 @@ static int imx_pinctrl_parse_groups(struct device_node *np,
 	for (i = 0; i < grp->num_pins; i++) {
 		pin = &((struct imx_pin *)(grp->data))[i];
 		if (info->flags & IMX_USE_SCU)
-			imx_pinctrl_parse_pin_scu(ipctl, &grp->pins[i],
+			info->imx_pinctrl_parse_pin(ipctl, &grp->pins[i],
 						  pin, &list);
 		else
 			imx_pinctrl_parse_pin_mmio(ipctl, &grp->pins[i],
diff --git a/drivers/pinctrl/freescale/pinctrl-imx.h b/drivers/pinctrl/freescale/pinctrl-imx.h
index 333d32b..40927ca 100644
--- a/drivers/pinctrl/freescale/pinctrl-imx.h
+++ b/drivers/pinctrl/freescale/pinctrl-imx.h
@@ -75,6 +75,21 @@ struct imx_cfg_params_decode {
 	bool invert;
 };
 
+/**
+ * @dev: a pointer back to containing device
+ * @base: the offset to the controller in virtual memory
+ */
+struct imx_pinctrl {
+	struct device *dev;
+	struct pinctrl_dev *pctl;
+	void __iomem *base;
+	void __iomem *input_sel_base;
+	const struct imx_pinctrl_soc_info *info;
+	struct imx_pin_reg *pin_regs;
+	unsigned int group_index;
+	struct mutex mutex;
+};
+
 struct imx_pinctrl_soc_info {
 	const struct pinctrl_pin_desc *pins;
 	unsigned int npins;
@@ -98,21 +113,13 @@ struct imx_pinctrl_soc_info {
 				  struct pinctrl_gpio_range *range,
 				  unsigned offset,
 				  bool input);
-};
-
-/**
- * @dev: a pointer back to containing device
- * @base: the offset to the controller in virtual memory
- */
-struct imx_pinctrl {
-	struct device *dev;
-	struct pinctrl_dev *pctl;
-	void __iomem *base;
-	void __iomem *input_sel_base;
-	const struct imx_pinctrl_soc_info *info;
-	struct imx_pin_reg *pin_regs;
-	unsigned int group_index;
-	struct mutex mutex;
+	int (*imx_pinconf_get)(struct pinctrl_dev *pctldev, unsigned int pin_id,
+			       unsigned long *config);
+	int (*imx_pinconf_set)(struct pinctrl_dev *pctldev, unsigned int pin_id,
+			       unsigned long *configs, unsigned int num_configs);
+	void (*imx_pinctrl_parse_pin)(struct imx_pinctrl *ipctl,
+				      unsigned int *pin_id, struct imx_pin *pin,
+				      const __be32 **list_p);
 };
 
 #define IMX_CFG_PARAMS_DECODE(p, m, o) \
diff --git a/drivers/pinctrl/freescale/pinctrl-imx8dxl.c b/drivers/pinctrl/freescale/pinctrl-imx8dxl.c
index 12b97da..d3020c0 100644
--- a/drivers/pinctrl/freescale/pinctrl-imx8dxl.c
+++ b/drivers/pinctrl/freescale/pinctrl-imx8dxl.c
@@ -159,6 +159,9 @@ static struct imx_pinctrl_soc_info imx8dxl_pinctrl_info = {
 	.pins = imx8dxl_pinctrl_pads,
 	.npins = ARRAY_SIZE(imx8dxl_pinctrl_pads),
 	.flags = IMX_USE_SCU,
+	.imx_pinconf_get = imx_pinconf_get_scu,
+	.imx_pinconf_set = imx_pinconf_set_scu,
+	.imx_pinctrl_parse_pin = imx_pinctrl_parse_pin_scu,
 };
 
 static const struct of_device_id imx8dxl_pinctrl_of_match[] = {
diff --git a/drivers/pinctrl/freescale/pinctrl-imx8qm.c b/drivers/pinctrl/freescale/pinctrl-imx8qm.c
index 095acf4..8f46b940 100644
--- a/drivers/pinctrl/freescale/pinctrl-imx8qm.c
+++ b/drivers/pinctrl/freescale/pinctrl-imx8qm.c
@@ -292,6 +292,9 @@ static const struct imx_pinctrl_soc_info imx8qm_pinctrl_info = {
 	.pins = imx8qm_pinctrl_pads,
 	.npins = ARRAY_SIZE(imx8qm_pinctrl_pads),
 	.flags = IMX_USE_SCU,
+	.imx_pinconf_get = imx_pinconf_get_scu,
+	.imx_pinconf_set = imx_pinconf_set_scu,
+	.imx_pinctrl_parse_pin = imx_pinctrl_parse_pin_scu,
 };
 
 static const struct of_device_id imx8qm_pinctrl_of_match[] = {
diff --git a/drivers/pinctrl/freescale/pinctrl-imx8qxp.c b/drivers/pinctrl/freescale/pinctrl-imx8qxp.c
index 81ebd4c..6776ad6 100644
--- a/drivers/pinctrl/freescale/pinctrl-imx8qxp.c
+++ b/drivers/pinctrl/freescale/pinctrl-imx8qxp.c
@@ -198,6 +198,9 @@ static struct imx_pinctrl_soc_info imx8qxp_pinctrl_info = {
 	.pins = imx8qxp_pinctrl_pads,
 	.npins = ARRAY_SIZE(imx8qxp_pinctrl_pads),
 	.flags = IMX_USE_SCU,
+	.imx_pinconf_get = imx_pinconf_get_scu,
+	.imx_pinconf_set = imx_pinconf_set_scu,
+	.imx_pinctrl_parse_pin = imx_pinctrl_parse_pin_scu,
 };
 
 static const struct of_device_id imx8qxp_pinctrl_of_match[] = {
-- 
2.7.4


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[PATCH V2 2/3] pinctrl: imx: Support building SCU pinctrl core driver as module

[Anson Huang]

Change PINCTR_IMX_SCU to tristate, remove unnecessary #ifdef and add
module author, description and license to support building SCU pinctrl
core driver as module.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
---
Changes since V1:
	- split V1 [1/2] patch to 2 patches, this patch supports building SCU pinctrl core
	  driver as module;
	- remove unnecessary #ifdef check and #else block.
---
 drivers/pinctrl/freescale/Kconfig       |  2 +-
 drivers/pinctrl/freescale/pinctrl-imx.h | 20 --------------------
 drivers/pinctrl/freescale/pinctrl-scu.c |  5 +++++
 3 files changed, 6 insertions(+), 21 deletions(-)

diff --git a/drivers/pinctrl/freescale/Kconfig b/drivers/pinctrl/freescale/Kconfig
index 08fcf5c..452c499 100644
--- a/drivers/pinctrl/freescale/Kconfig
+++ b/drivers/pinctrl/freescale/Kconfig
@@ -7,7 +7,7 @@ config PINCTRL_IMX
 	select REGMAP
 
 config PINCTRL_IMX_SCU
-	bool
+	tristate "IMX SCU pinctrl core driver"
 	depends on IMX_SCU
 	select PINCTRL_IMX
 
diff --git a/drivers/pinctrl/freescale/pinctrl-imx.h b/drivers/pinctrl/freescale/pinctrl-imx.h
index 40927ca..fd8c4b6 100644
--- a/drivers/pinctrl/freescale/pinctrl-imx.h
+++ b/drivers/pinctrl/freescale/pinctrl-imx.h
@@ -144,7 +144,6 @@ struct imx_pinctrl_soc_info {
 int imx_pinctrl_probe(struct platform_device *pdev,
 			const struct imx_pinctrl_soc_info *info);
 
-#ifdef CONFIG_PINCTRL_IMX_SCU
 #define BM_PAD_CTL_GP_ENABLE		BIT(30)
 #define BM_PAD_CTL_IFMUX_ENABLE		BIT(31)
 #define BP_PAD_CTL_IFMUX		27
@@ -157,23 +156,4 @@ int imx_pinconf_set_scu(struct pinctrl_dev *pctldev, unsigned pin_id,
 void imx_pinctrl_parse_pin_scu(struct imx_pinctrl *ipctl,
 			       unsigned int *pin_id, struct imx_pin *pin,
 			       const __be32 **list_p);
-#else
-static inline int imx_pinconf_get_scu(struct pinctrl_dev *pctldev,
-				      unsigned pin_id, unsigned long *config)
-{
-	return -EINVAL;
-}
-static inline int imx_pinconf_set_scu(struct pinctrl_dev *pctldev,
-				      unsigned pin_id, unsigned long *configs,
-				      unsigned num_configs)
-{
-	return -EINVAL;
-}
-static inline void imx_pinctrl_parse_pin_scu(struct imx_pinctrl *ipctl,
-					    unsigned int *pin_id,
-					    struct imx_pin *pin,
-					    const __be32 **list_p)
-{
-}
-#endif
 #endif /* __DRIVERS_PINCTRL_IMX_H */
diff --git a/drivers/pinctrl/freescale/pinctrl-scu.c b/drivers/pinctrl/freescale/pinctrl-scu.c
index 9df45d3..59b5f8a 100644
--- a/drivers/pinctrl/freescale/pinctrl-scu.c
+++ b/drivers/pinctrl/freescale/pinctrl-scu.c
@@ -7,6 +7,7 @@
 
 #include <linux/err.h>
 #include <linux/firmware/imx/sci.h>
+#include <linux/module.h>
 #include <linux/of_address.h>
 #include <linux/pinctrl/pinctrl.h>
 #include <linux/platform_device.h>
@@ -123,3 +124,7 @@ void imx_pinctrl_parse_pin_scu(struct imx_pinctrl *ipctl,
 		pin_scu->mux_mode, pin_scu->config);
 }
 EXPORT_SYMBOL_GPL(imx_pinctrl_parse_pin_scu);
+
+MODULE_AUTHOR("Dong Aisheng <aisheng.dong@nxp.com>");
+MODULE_DESCRIPTION("NXP i.MX SCU common pinctrl driver");
+MODULE_LICENSE("GPL v2");
-- 
2.7.4


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[PATCH V2 3/3] pinctrl: imx: Support building i.MX pinctrl core driver as module

[Anson Huang]

Change PINCTRL_IMX to tristate to support loadable module build.

And i.MX common pinctrl driver should depend on CONFIG_OF to make sure
no build error when i.MX common pinctrl driver is enabled for different
architectures without CONFIG_OF.

Also add module author, description and license.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
---
Changes since V1:
	- Correct module author, using "i.MX pinctrl core driver" instead of "i.MX pinctrl driver".
---
 drivers/pinctrl/freescale/Kconfig       | 3 ++-
 drivers/pinctrl/freescale/pinctrl-imx.c | 5 +++++
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/pinctrl/freescale/Kconfig b/drivers/pinctrl/freescale/Kconfig
index 452c499..0058d3a 100644
--- a/drivers/pinctrl/freescale/Kconfig
+++ b/drivers/pinctrl/freescale/Kconfig
@@ -1,6 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0-only
 config PINCTRL_IMX
-	bool
+	tristate "IMX pinctrl core driver"
+	depends on OF
 	select GENERIC_PINCTRL_GROUPS
 	select GENERIC_PINMUX_FUNCTIONS
 	select GENERIC_PINCONF
diff --git a/drivers/pinctrl/freescale/pinctrl-imx.c b/drivers/pinctrl/freescale/pinctrl-imx.c
index b80c450..c96fe64 100644
--- a/drivers/pinctrl/freescale/pinctrl-imx.c
+++ b/drivers/pinctrl/freescale/pinctrl-imx.c
@@ -11,6 +11,7 @@
 #include <linux/init.h>
 #include <linux/io.h>
 #include <linux/mfd/syscon.h>
+#include <linux/module.h>
 #include <linux/of.h>
 #include <linux/of_device.h>
 #include <linux/of_address.h>
@@ -898,3 +899,7 @@ const struct dev_pm_ops imx_pinctrl_pm_ops = {
 					imx_pinctrl_resume)
 };
 EXPORT_SYMBOL_GPL(imx_pinctrl_pm_ops);
+
+MODULE_AUTHOR("Dong Aisheng <aisheng.dong@nxp.com>");
+MODULE_DESCRIPTION("NXP i.MX common pinctrl driver");
+MODULE_LICENSE("GPL v2");
-- 
2.7.4


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RE: [PATCH V2 1/3] pinctrl: imx: Use function callbacks for SCU related functions

[Aisheng Dong]

> From: Anson Huang <Anson.Huang@nxp.com>
> Sent: Monday, September 7, 2020 8:33 PM
> 
> Use function callbacks for SCU related functions in pinctrl-imx.c in order to
> support the scenario of PINCTRL_IMX is built in while PINCTRL_IMX_SCU is built
> as module, all drivers using SCU pinctrl driver need to initialize the SCU related
> function callback.
> 
> Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
> ---
> Changes since V1:
> 	- split V1 [1/2] patch to 2 patches, this patch does the change of using
> function
> 	  callbacks for SCU related functions.
> ---
>  drivers/pinctrl/freescale/pinctrl-imx.c     |  8 +++----
>  drivers/pinctrl/freescale/pinctrl-imx.h     | 37
> +++++++++++++++++------------
>  drivers/pinctrl/freescale/pinctrl-imx8dxl.c |  3 +++
> drivers/pinctrl/freescale/pinctrl-imx8qm.c  |  3 +++
> drivers/pinctrl/freescale/pinctrl-imx8qxp.c |  3 +++
>  5 files changed, 35 insertions(+), 19 deletions(-)
> 
> diff --git a/drivers/pinctrl/freescale/pinctrl-imx.c
> b/drivers/pinctrl/freescale/pinctrl-imx.c
> index 507e4af..b80c450 100644
> --- a/drivers/pinctrl/freescale/pinctrl-imx.c
> +++ b/drivers/pinctrl/freescale/pinctrl-imx.c
> @@ -373,7 +373,7 @@ static int imx_pinconf_get(struct pinctrl_dev *pctldev,
>  	const struct imx_pinctrl_soc_info *info = ipctl->info;
> 
>  	if (info->flags & IMX_USE_SCU)
> -		return imx_pinconf_get_scu(pctldev, pin_id, config);
> +		return info->imx_pinconf_get(pctldev, pin_id, config);
>  	else
>  		return imx_pinconf_get_mmio(pctldev, pin_id, config);  } @@ -423,7
> +423,7 @@ static int imx_pinconf_set(struct pinctrl_dev *pctldev,
>  	const struct imx_pinctrl_soc_info *info = ipctl->info;
> 
>  	if (info->flags & IMX_USE_SCU)
> -		return imx_pinconf_set_scu(pctldev, pin_id,
> +		return info->imx_pinconf_set(pctldev, pin_id,
>  					   configs, num_configs);
>  	else
>  		return imx_pinconf_set_mmio(pctldev, pin_id, @@ -440,7 +440,7
> @@ static void imx_pinconf_dbg_show(struct pinctrl_dev *pctldev,
>  	int ret;
> 
>  	if (info->flags & IMX_USE_SCU) {
> -		ret = imx_pinconf_get_scu(pctldev, pin_id, &config);
> +		ret = info->imx_pinconf_get(pctldev, pin_id, &config);
>  		if (ret) {
>  			dev_err(ipctl->dev, "failed to get %s pinconf\n",
>  				pin_get_name(pctldev, pin_id));
> @@ -629,7 +629,7 @@ static int imx_pinctrl_parse_groups(struct device_node
> *np,
>  	for (i = 0; i < grp->num_pins; i++) {
>  		pin = &((struct imx_pin *)(grp->data))[i];
>  		if (info->flags & IMX_USE_SCU)
> -			imx_pinctrl_parse_pin_scu(ipctl, &grp->pins[i],
> +			info->imx_pinctrl_parse_pin(ipctl, &grp->pins[i],
>  						  pin, &list);
>  		else
>  			imx_pinctrl_parse_pin_mmio(ipctl, &grp->pins[i], diff --git
> a/drivers/pinctrl/freescale/pinctrl-imx.h b/drivers/pinctrl/freescale/pinctrl-imx.h
> index 333d32b..40927ca 100644
> --- a/drivers/pinctrl/freescale/pinctrl-imx.h
> +++ b/drivers/pinctrl/freescale/pinctrl-imx.h
> @@ -75,6 +75,21 @@ struct imx_cfg_params_decode {
>  	bool invert;
>  };
> 
> +/**
> + * @dev: a pointer back to containing device
> + * @base: the offset to the controller in virtual memory  */ struct
> +imx_pinctrl {
> +	struct device *dev;
> +	struct pinctrl_dev *pctl;
> +	void __iomem *base;
> +	void __iomem *input_sel_base;
> +	const struct imx_pinctrl_soc_info *info;
> +	struct imx_pin_reg *pin_regs;
> +	unsigned int group_index;
> +	struct mutex mutex;
> +};
> +

You seems missed my question in the former patch review.
Could you clarify a bit why need move this part code?

Regards
Aisheng

>  struct imx_pinctrl_soc_info {
>  	const struct pinctrl_pin_desc *pins;
>  	unsigned int npins;
> @@ -98,21 +113,13 @@ struct imx_pinctrl_soc_info {
>  				  struct pinctrl_gpio_range *range,
>  				  unsigned offset,
>  				  bool input);
> -};
> -
> -/**
> - * @dev: a pointer back to containing device
> - * @base: the offset to the controller in virtual memory
> - */
> -struct imx_pinctrl {
> -	struct device *dev;
> -	struct pinctrl_dev *pctl;
> -	void __iomem *base;
> -	void __iomem *input_sel_base;
> -	const struct imx_pinctrl_soc_info *info;
> -	struct imx_pin_reg *pin_regs;
> -	unsigned int group_index;
> -	struct mutex mutex;
> +	int (*imx_pinconf_get)(struct pinctrl_dev *pctldev, unsigned int pin_id,
> +			       unsigned long *config);
> +	int (*imx_pinconf_set)(struct pinctrl_dev *pctldev, unsigned int pin_id,
> +			       unsigned long *configs, unsigned int num_configs);
> +	void (*imx_pinctrl_parse_pin)(struct imx_pinctrl *ipctl,
> +				      unsigned int *pin_id, struct imx_pin *pin,
> +				      const __be32 **list_p);
>  };
> 
>  #define IMX_CFG_PARAMS_DECODE(p, m, o) \ diff --git
> a/drivers/pinctrl/freescale/pinctrl-imx8dxl.c
> b/drivers/pinctrl/freescale/pinctrl-imx8dxl.c
> index 12b97da..d3020c0 100644
> --- a/drivers/pinctrl/freescale/pinctrl-imx8dxl.c
> +++ b/drivers/pinctrl/freescale/pinctrl-imx8dxl.c
> @@ -159,6 +159,9 @@ static struct imx_pinctrl_soc_info imx8dxl_pinctrl_info
> = {
>  	.pins = imx8dxl_pinctrl_pads,
>  	.npins = ARRAY_SIZE(imx8dxl_pinctrl_pads),
>  	.flags = IMX_USE_SCU,
> +	.imx_pinconf_get = imx_pinconf_get_scu,
> +	.imx_pinconf_set = imx_pinconf_set_scu,
> +	.imx_pinctrl_parse_pin = imx_pinctrl_parse_pin_scu,
>  };
> 
>  static const struct of_device_id imx8dxl_pinctrl_of_match[] = { diff --git
> a/drivers/pinctrl/freescale/pinctrl-imx8qm.c
> b/drivers/pinctrl/freescale/pinctrl-imx8qm.c
> index 095acf4..8f46b940 100644
> --- a/drivers/pinctrl/freescale/pinctrl-imx8qm.c
> +++ b/drivers/pinctrl/freescale/pinctrl-imx8qm.c
> @@ -292,6 +292,9 @@ static const struct imx_pinctrl_soc_info
> imx8qm_pinctrl_info = {
>  	.pins = imx8qm_pinctrl_pads,
>  	.npins = ARRAY_SIZE(imx8qm_pinctrl_pads),
>  	.flags = IMX_USE_SCU,
> +	.imx_pinconf_get = imx_pinconf_get_scu,
> +	.imx_pinconf_set = imx_pinconf_set_scu,
> +	.imx_pinctrl_parse_pin = imx_pinctrl_parse_pin_scu,
>  };
> 
>  static const struct of_device_id imx8qm_pinctrl_of_match[] = { diff --git
> a/drivers/pinctrl/freescale/pinctrl-imx8qxp.c
> b/drivers/pinctrl/freescale/pinctrl-imx8qxp.c
> index 81ebd4c..6776ad6 100644
> --- a/drivers/pinctrl/freescale/pinctrl-imx8qxp.c
> +++ b/drivers/pinctrl/freescale/pinctrl-imx8qxp.c
> @@ -198,6 +198,9 @@ static struct imx_pinctrl_soc_info imx8qxp_pinctrl_info
> = {
>  	.pins = imx8qxp_pinctrl_pads,
>  	.npins = ARRAY_SIZE(imx8qxp_pinctrl_pads),
>  	.flags = IMX_USE_SCU,
> +	.imx_pinconf_get = imx_pinconf_get_scu,
> +	.imx_pinconf_set = imx_pinconf_set_scu,
> +	.imx_pinctrl_parse_pin = imx_pinctrl_parse_pin_scu,
>  };
> 
>  static const struct of_device_id imx8qxp_pinctrl_of_match[] = {
> --
> 2.7.4

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RE: [PATCH V2 2/3] pinctrl: imx: Support building SCU pinctrl core driver as module

[Aisheng Dong]

> From: Anson Huang <Anson.Huang@nxp.com>
> Sent: Monday, September 7, 2020 8:33 PM
> 
> Change PINCTR_IMX_SCU to tristate, remove unnecessary #ifdef and add
> module author, description and license to support building SCU pinctrl core
> driver as module.
> 
> Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
> ---
> Changes since V1:
> 	- split V1 [1/2] patch to 2 patches, this patch supports building SCU pinctrl
> core
> 	  driver as module;
> 	- remove unnecessary #ifdef check and #else block.
> ---
>  drivers/pinctrl/freescale/Kconfig       |  2 +-
>  drivers/pinctrl/freescale/pinctrl-imx.h | 20 --------------------
> drivers/pinctrl/freescale/pinctrl-scu.c |  5 +++++
>  3 files changed, 6 insertions(+), 21 deletions(-)
> 
> diff --git a/drivers/pinctrl/freescale/Kconfig b/drivers/pinctrl/freescale/Kconfig
> index 08fcf5c..452c499 100644
> --- a/drivers/pinctrl/freescale/Kconfig
> +++ b/drivers/pinctrl/freescale/Kconfig
> @@ -7,7 +7,7 @@ config PINCTRL_IMX
>  	select REGMAP
> 
>  config PINCTRL_IMX_SCU
> -	bool
> +	tristate "IMX SCU pinctrl core driver"
>  	depends on IMX_SCU
>  	select PINCTRL_IMX
> 

[...]

> diff --git a/drivers/pinctrl/freescale/pinctrl-imx.h
> b/drivers/pinctrl/freescale/pinctrl-imx.h
> index 40927ca..fd8c4b6 100644
> --- a/drivers/pinctrl/freescale/pinctrl-imx.h
> +++ b/drivers/pinctrl/freescale/pinctrl-imx.h
> @@ -144,7 +144,6 @@ struct imx_pinctrl_soc_info {  int
> imx_pinctrl_probe(struct platform_device *pdev,
>  			const struct imx_pinctrl_soc_info *info);
> 
> -#ifdef CONFIG_PINCTRL_IMX_SCU
>  #define BM_PAD_CTL_GP_ENABLE		BIT(30)
>  #define BM_PAD_CTL_IFMUX_ENABLE		BIT(31)
>  #define BP_PAD_CTL_IFMUX		27
> @@ -157,23 +156,4 @@ int imx_pinconf_set_scu(struct pinctrl_dev *pctldev,
> unsigned pin_id,  void imx_pinctrl_parse_pin_scu(struct imx_pinctrl *ipctl,
>  			       unsigned int *pin_id, struct imx_pin *pin,
>  			       const __be32 **list_p);
> -#else
> -static inline int imx_pinconf_get_scu(struct pinctrl_dev *pctldev,
> -				      unsigned pin_id, unsigned long *config)
> -{
> -	return -EINVAL;
> -}
> -static inline int imx_pinconf_set_scu(struct pinctrl_dev *pctldev,
> -				      unsigned pin_id, unsigned long *configs,
> -				      unsigned num_configs)
> -{
> -	return -EINVAL;
> -}
> -static inline void imx_pinctrl_parse_pin_scu(struct imx_pinctrl *ipctl,
> -					    unsigned int *pin_id,
> -					    struct imx_pin *pin,
> -					    const __be32 **list_p)
> -{
> -}
> -#endif
>  #endif /* __DRIVERS_PINCTRL_IMX_H */

Should this part of changes go to Patch 1?

> diff --git a/drivers/pinctrl/freescale/pinctrl-scu.c
> b/drivers/pinctrl/freescale/pinctrl-scu.c
> index 9df45d3..59b5f8a 100644
> --- a/drivers/pinctrl/freescale/pinctrl-scu.c
> +++ b/drivers/pinctrl/freescale/pinctrl-scu.c
> @@ -7,6 +7,7 @@
> 
>  #include <linux/err.h>
>  #include <linux/firmware/imx/sci.h>
> +#include <linux/module.h>
>  #include <linux/of_address.h>
>  #include <linux/pinctrl/pinctrl.h>
>  #include <linux/platform_device.h>
> @@ -123,3 +124,7 @@ void imx_pinctrl_parse_pin_scu(struct imx_pinctrl
> *ipctl,
>  		pin_scu->mux_mode, pin_scu->config);
>  }
>  EXPORT_SYMBOL_GPL(imx_pinctrl_parse_pin_scu);
> +
> +MODULE_AUTHOR("Dong Aisheng <aisheng.dong@nxp.com>");
> +MODULE_DESCRIPTION("NXP i.MX SCU common pinctrl driver");
> +MODULE_LICENSE("GPL v2");
> --
> 2.7.4

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RE: [PATCH V2 3/3] pinctrl: imx: Support building i.MX pinctrl core driver as module

[Aisheng Dong]

> From: Anson Huang <Anson.Huang@nxp.com>
> Sent: Monday, September 7, 2020 8:33 PM
> 
> Change PINCTRL_IMX to tristate to support loadable module build.
> 
> And i.MX common pinctrl driver should depend on CONFIG_OF to make sure no
> build error when i.MX common pinctrl driver is enabled for different
> architectures without CONFIG_OF.
> 
> Also add module author, description and license.
> 
> Signed-off-by: Anson Huang <Anson.Huang@nxp.com>

Reviewed-by: Dong Aisheng <aisheng.dong@nxp.com>

Regards
Aisheng
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RE: [PATCH V2 1/3] pinctrl: imx: Use function callbacks for SCU related functions

[Anson Huang]

> Subject: RE: [PATCH V2 1/3] pinctrl: imx: Use function callbacks for SCU
> related functions
> 
> > From: Anson Huang <Anson.Huang@nxp.com>
> > Sent: Monday, September 7, 2020 8:33 PM
> >
> > Use function callbacks for SCU related functions in pinctrl-imx.c in
> > order to support the scenario of PINCTRL_IMX is built in while
> > PINCTRL_IMX_SCU is built as module, all drivers using SCU pinctrl
> > driver need to initialize the SCU related function callback.
> >
> > Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
> > ---
> > Changes since V1:
> > 	- split V1 [1/2] patch to 2 patches, this patch does the change of
> > using function
> > 	  callbacks for SCU related functions.
> > ---
> >  drivers/pinctrl/freescale/pinctrl-imx.c     |  8 +++----
> >  drivers/pinctrl/freescale/pinctrl-imx.h     | 37
> > +++++++++++++++++------------
> >  drivers/pinctrl/freescale/pinctrl-imx8dxl.c |  3 +++
> > drivers/pinctrl/freescale/pinctrl-imx8qm.c  |  3 +++
> > drivers/pinctrl/freescale/pinctrl-imx8qxp.c |  3 +++
> >  5 files changed, 35 insertions(+), 19 deletions(-)
> >
> > diff --git a/drivers/pinctrl/freescale/pinctrl-imx.c
> > b/drivers/pinctrl/freescale/pinctrl-imx.c
> > index 507e4af..b80c450 100644
> > --- a/drivers/pinctrl/freescale/pinctrl-imx.c
> > +++ b/drivers/pinctrl/freescale/pinctrl-imx.c
> > @@ -373,7 +373,7 @@ static int imx_pinconf_get(struct pinctrl_dev
> *pctldev,
> >  	const struct imx_pinctrl_soc_info *info = ipctl->info;
> >
> >  	if (info->flags & IMX_USE_SCU)
> > -		return imx_pinconf_get_scu(pctldev, pin_id, config);
> > +		return info->imx_pinconf_get(pctldev, pin_id, config);
> >  	else
> >  		return imx_pinconf_get_mmio(pctldev, pin_id, config);  } @@
> -423,7
> > +423,7 @@ static int imx_pinconf_set(struct pinctrl_dev *pctldev,
> >  	const struct imx_pinctrl_soc_info *info = ipctl->info;
> >
> >  	if (info->flags & IMX_USE_SCU)
> > -		return imx_pinconf_set_scu(pctldev, pin_id,
> > +		return info->imx_pinconf_set(pctldev, pin_id,
> >  					   configs, num_configs);
> >  	else
> >  		return imx_pinconf_set_mmio(pctldev, pin_id, @@ -440,7 +440,7
> @@
> > static void imx_pinconf_dbg_show(struct pinctrl_dev *pctldev,
> >  	int ret;
> >
> >  	if (info->flags & IMX_USE_SCU) {
> > -		ret = imx_pinconf_get_scu(pctldev, pin_id, &config);
> > +		ret = info->imx_pinconf_get(pctldev, pin_id, &config);
> >  		if (ret) {
> >  			dev_err(ipctl->dev, "failed to get %s pinconf\n",
> >  				pin_get_name(pctldev, pin_id));
> > @@ -629,7 +629,7 @@ static int imx_pinctrl_parse_groups(struct
> > device_node *np,
> >  	for (i = 0; i < grp->num_pins; i++) {
> >  		pin = &((struct imx_pin *)(grp->data))[i];
> >  		if (info->flags & IMX_USE_SCU)
> > -			imx_pinctrl_parse_pin_scu(ipctl, &grp->pins[i],
> > +			info->imx_pinctrl_parse_pin(ipctl, &grp->pins[i],
> >  						  pin, &list);
> >  		else
> >  			imx_pinctrl_parse_pin_mmio(ipctl, &grp->pins[i], diff --git
> > a/drivers/pinctrl/freescale/pinctrl-imx.h
> > b/drivers/pinctrl/freescale/pinctrl-imx.h
> > index 333d32b..40927ca 100644
> > --- a/drivers/pinctrl/freescale/pinctrl-imx.h
> > +++ b/drivers/pinctrl/freescale/pinctrl-imx.h
> > @@ -75,6 +75,21 @@ struct imx_cfg_params_decode {
> >  	bool invert;
> >  };
> >
> > +/**
> > + * @dev: a pointer back to containing device
> > + * @base: the offset to the controller in virtual memory  */ struct
> > +imx_pinctrl {
> > +	struct device *dev;
> > +	struct pinctrl_dev *pctl;
> > +	void __iomem *base;
> > +	void __iomem *input_sel_base;
> > +	const struct imx_pinctrl_soc_info *info;
> > +	struct imx_pin_reg *pin_regs;
> > +	unsigned int group_index;
> > +	struct mutex mutex;
> > +};
> > +
> 
> You seems missed my question in the former patch review.
> Could you clarify a bit why need move this part code?

Please check the mail, I have replied it yestoday as below, the function needs to use imx_pinctrl structure,
so it needs to be moved, otherwise, build will fail.

> Any reason to move this part of code?


It is because below function callback added in imx_pinctrl_soc_info structure need to use imx_pinctrl, otherwise, build will fail.

+       void (*imx_pinctrl_parse_pin)(struct imx_pinctrl *ipctl,

Anson
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RE: [PATCH V2 2/3] pinctrl: imx: Support building SCU pinctrl core driver as module

[Anson Huang]

> Subject: RE: [PATCH V2 2/3] pinctrl: imx: Support building SCU pinctrl core
> driver as module
> 
> > From: Anson Huang <Anson.Huang@nxp.com>
> > Sent: Monday, September 7, 2020 8:33 PM
> >
> > Change PINCTR_IMX_SCU to tristate, remove unnecessary #ifdef and add
> > module author, description and license to support building SCU pinctrl
> > core driver as module.
> >
> > Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
> > ---
> > Changes since V1:
> > 	- split V1 [1/2] patch to 2 patches, this patch supports building SCU
> > pinctrl core
> > 	  driver as module;
> > 	- remove unnecessary #ifdef check and #else block.
> > ---
> >  drivers/pinctrl/freescale/Kconfig       |  2 +-
> >  drivers/pinctrl/freescale/pinctrl-imx.h | 20 --------------------
> > drivers/pinctrl/freescale/pinctrl-scu.c |  5 +++++
> >  3 files changed, 6 insertions(+), 21 deletions(-)
> >
> > diff --git a/drivers/pinctrl/freescale/Kconfig
> > b/drivers/pinctrl/freescale/Kconfig
> > index 08fcf5c..452c499 100644
> > --- a/drivers/pinctrl/freescale/Kconfig
> > +++ b/drivers/pinctrl/freescale/Kconfig
> > @@ -7,7 +7,7 @@ config PINCTRL_IMX
> >  	select REGMAP
> >
> >  config PINCTRL_IMX_SCU
> > -	bool
> > +	tristate "IMX SCU pinctrl core driver"
> >  	depends on IMX_SCU
> >  	select PINCTRL_IMX
> >
> 
> [...]
> 
> > diff --git a/drivers/pinctrl/freescale/pinctrl-imx.h
> > b/drivers/pinctrl/freescale/pinctrl-imx.h
> > index 40927ca..fd8c4b6 100644
> > --- a/drivers/pinctrl/freescale/pinctrl-imx.h
> > +++ b/drivers/pinctrl/freescale/pinctrl-imx.h
> > @@ -144,7 +144,6 @@ struct imx_pinctrl_soc_info {  int
> > imx_pinctrl_probe(struct platform_device *pdev,
> >  			const struct imx_pinctrl_soc_info *info);
> >
> > -#ifdef CONFIG_PINCTRL_IMX_SCU
> >  #define BM_PAD_CTL_GP_ENABLE		BIT(30)
> >  #define BM_PAD_CTL_IFMUX_ENABLE		BIT(31)
> >  #define BP_PAD_CTL_IFMUX		27
> > @@ -157,23 +156,4 @@ int imx_pinconf_set_scu(struct pinctrl_dev
> > *pctldev, unsigned pin_id,  void imx_pinctrl_parse_pin_scu(struct
> imx_pinctrl *ipctl,
> >  			       unsigned int *pin_id, struct imx_pin *pin,
> >  			       const __be32 **list_p);
> > -#else
> > -static inline int imx_pinconf_get_scu(struct pinctrl_dev *pctldev,
> > -				      unsigned pin_id, unsigned long *config)
> > -{
> > -	return -EINVAL;
> > -}
> > -static inline int imx_pinconf_set_scu(struct pinctrl_dev *pctldev,
> > -				      unsigned pin_id, unsigned long *configs,
> > -				      unsigned num_configs)
> > -{
> > -	return -EINVAL;
> > -}
> > -static inline void imx_pinctrl_parse_pin_scu(struct imx_pinctrl *ipctl,
> > -					    unsigned int *pin_id,
> > -					    struct imx_pin *pin,
> > -					    const __be32 **list_p)
> > -{
> > -}
> > -#endif
> >  #endif /* __DRIVERS_PINCTRL_IMX_H */
> 
> Should this part of changes go to Patch 1?

OK, will send V3.

Anson
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