[PATCH 0/2] pinctrl: renesas: rzg2l: Simplify noise filter cfg macro

[PATCH 0/2] pinctrl: renesas: rzg2l: Simplify noise filter cfg macro

[Prabhakar]

From: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>

Hi All,

This patch series simplifies noise cfg macro, by just adding single macro
for configuration and while at it simplified rzg2l_pinctrl_pinconf_set()
function.

Cheers,
Prabhakar

Lad Prabhakar (2):
  pinctrl: renesas: rzg2l: Introduce single macro for digital noise
    filter configuration
  pinctrl: renesas: rzg2l: Move pinconf_to_config_argument() call
    outside of switch cases

 drivers/pinctrl/renesas/pinctrl-rzg2l.c | 62 +++++++++----------------
 1 file changed, 21 insertions(+), 41 deletions(-)

-- 
2.34.1

[PATCH 1/2] pinctrl: renesas: rzg2l: Introduce single macro for digital noise filter configuration

[Prabhakar]

From: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>

When enabling the digital noise filter for the pins, it is necessary to
configure both the noise filter stages (via the FILNUM register) and the
sampling interval (via the FILCLKSEL register). To simplify this process,
we introduce a single macro for configuring the digital noise filter.

This patch removes the PIN_CFG_FILNUM and PIN_CFG_FILCLKSEL configuration
macros and renames PIN_CFG_FILONOFF to PIN_CFG_NF.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
---
 drivers/pinctrl/renesas/pinctrl-rzg2l.c | 52 ++++++++++---------------
 1 file changed, 20 insertions(+), 32 deletions(-)

diff --git a/drivers/pinctrl/renesas/pinctrl-rzg2l.c b/drivers/pinctrl/renesas/pinctrl-rzg2l.c
index 2a73a8c374b3..8fc1f28d02d1 100644
--- a/drivers/pinctrl/renesas/pinctrl-rzg2l.c
+++ b/drivers/pinctrl/renesas/pinctrl-rzg2l.c
@@ -51,17 +51,15 @@
 #define PIN_CFG_IO_VMC_QSPI		BIT(7)
 #define PIN_CFG_IO_VMC_ETH0		BIT(8)
 #define PIN_CFG_IO_VMC_ETH1		BIT(9)
-#define PIN_CFG_FILONOFF		BIT(10)
-#define PIN_CFG_FILNUM			BIT(11)
-#define PIN_CFG_FILCLKSEL		BIT(12)
-#define PIN_CFG_IOLH_C			BIT(13)
-#define PIN_CFG_SOFT_PS			BIT(14)
-#define PIN_CFG_OEN			BIT(15)
-#define PIN_CFG_NOGPIO_INT		BIT(16)
-#define PIN_CFG_NOD			BIT(17)	/* N-ch Open Drain */
-#define PIN_CFG_SMT			BIT(18)	/* Schmitt-trigger input control */
-#define PIN_CFG_ELC			BIT(19)
-#define PIN_CFG_IOLH_RZV2H		BIT(20)
+#define PIN_CFG_NF			BIT(10)	/* Digital noise filter */
+#define PIN_CFG_IOLH_C			BIT(11)
+#define PIN_CFG_SOFT_PS			BIT(12)
+#define PIN_CFG_OEN			BIT(13)
+#define PIN_CFG_NOGPIO_INT		BIT(14)
+#define PIN_CFG_NOD			BIT(15)	/* N-ch Open Drain */
+#define PIN_CFG_SMT			BIT(16)	/* Schmitt-trigger input control */
+#define PIN_CFG_ELC			BIT(17)
+#define PIN_CFG_IOLH_RZV2H		BIT(18)
 
 #define RZG2L_SINGLE_PIN		BIT_ULL(63)	/* Dedicated pin */
 #define RZG2L_VARIABLE_CFG		BIT_ULL(62)	/* Variable cfg for port pins */
@@ -69,9 +67,7 @@
 #define RZG2L_MPXED_COMMON_PIN_FUNCS(group) \
 					(PIN_CFG_IOLH_##group | \
 					 PIN_CFG_PUPD | \
-					 PIN_CFG_FILONOFF | \
-					 PIN_CFG_FILNUM | \
-					 PIN_CFG_FILCLKSEL)
+					 PIN_CFG_NF)
 
 #define RZG2L_MPXED_PIN_FUNCS		(RZG2L_MPXED_COMMON_PIN_FUNCS(A) | \
 					 PIN_CFG_SR)
@@ -84,10 +80,7 @@
 					 PIN_CFG_SR | \
 					 PIN_CFG_SMT)
 
-#define RZG2L_MPXED_ETH_PIN_FUNCS(x)	((x) | \
-					 PIN_CFG_FILONOFF | \
-					 PIN_CFG_FILNUM | \
-					 PIN_CFG_FILCLKSEL)
+#define RZG2L_MPXED_ETH_PIN_FUNCS(x)	((x) | PIN_CFG_NF)
 
 #define PIN_CFG_PIN_MAP_MASK		GENMASK_ULL(61, 54)
 #define PIN_CFG_PIN_REG_MASK		GENMASK_ULL(53, 46)
@@ -394,13 +387,13 @@ static const u64 r9a09g057_variable_pin_cfg[] = {
 #ifdef CONFIG_RISCV
 static const u64 r9a07g043f_variable_pin_cfg[] = {
 	RZG2L_VARIABLE_PIN_CFG_PACK(20, 0, PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_PUPD |
-					   PIN_CFG_FILONOFF | PIN_CFG_FILNUM | PIN_CFG_FILCLKSEL |
+					   PIN_CFG_NF |
 					   PIN_CFG_IEN | PIN_CFG_NOGPIO_INT),
 	RZG2L_VARIABLE_PIN_CFG_PACK(20, 1, PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_PUPD |
-					   PIN_CFG_FILONOFF | PIN_CFG_FILNUM | PIN_CFG_FILCLKSEL |
+					   PIN_CFG_NF |
 					   PIN_CFG_IEN | PIN_CFG_NOGPIO_INT),
 	RZG2L_VARIABLE_PIN_CFG_PACK(20, 2, PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_PUPD |
-					   PIN_CFG_FILONOFF | PIN_CFG_FILNUM | PIN_CFG_FILCLKSEL |
+					   PIN_CFG_NF |
 					   PIN_CFG_IEN  | PIN_CFG_NOGPIO_INT),
 	RZG2L_VARIABLE_PIN_CFG_PACK(20, 3, PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_PUPD |
 					   PIN_CFG_IEN | PIN_CFG_NOGPIO_INT),
@@ -431,7 +424,7 @@ static const u64 r9a07g043f_variable_pin_cfg[] = {
 	RZG2L_VARIABLE_PIN_CFG_PACK(24, 4, PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_PUPD |
 					   PIN_CFG_NOGPIO_INT),
 	RZG2L_VARIABLE_PIN_CFG_PACK(24, 5, PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_PUPD |
-					   PIN_CFG_FILONOFF | PIN_CFG_FILNUM | PIN_CFG_FILCLKSEL |
+					   PIN_CFG_NF |
 					   PIN_CFG_NOGPIO_INT),
 };
 #endif
@@ -1886,8 +1879,7 @@ static const u64 r9a07g043_gpio_configs[] = {
 #ifdef CONFIG_RISCV
 	/* Below additional port pins (P19 - P28) are exclusively available on RZ/Five SoC only */
 	RZG2L_GPIO_PORT_SPARSE_PACK(0x2, 0x06, PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_PUPD |
-				    PIN_CFG_FILONOFF | PIN_CFG_FILNUM | PIN_CFG_FILCLKSEL |
-				    PIN_CFG_IEN | PIN_CFG_NOGPIO_INT),			/* P19 */
+				    PIN_CFG_NF | PIN_CFG_IEN | PIN_CFG_NOGPIO_INT),	/* P19 */
 	RZG2L_GPIO_PORT_PACK_VARIABLE(8, 0x07),						/* P20 */
 	RZG2L_GPIO_PORT_SPARSE_PACK(0x2, 0x08, PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_PUPD |
 				    PIN_CFG_IEN | PIN_CFG_NOGPIO_INT),			/* P21 */
@@ -1895,8 +1887,7 @@ static const u64 r9a07g043_gpio_configs[] = {
 			     PIN_CFG_IEN | PIN_CFG_NOGPIO_INT),				/* P22 */
 	RZG2L_GPIO_PORT_SPARSE_PACK_VARIABLE(0x3e, 0x0a),				/* P23 */
 	RZG2L_GPIO_PORT_PACK_VARIABLE(6, 0x0b),						/* P24 */
-	RZG2L_GPIO_PORT_SPARSE_PACK(0x2, 0x0c, PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_FILONOFF |
-				    PIN_CFG_FILNUM | PIN_CFG_FILCLKSEL |
+	RZG2L_GPIO_PORT_SPARSE_PACK(0x2, 0x0c, PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_NF |
 				    PIN_CFG_NOGPIO_INT),				/* P25 */
 	0x0,										/* P26 */
 	0x0,										/* P27 */
@@ -1974,8 +1965,7 @@ static const struct {
 	struct rzg2l_dedicated_configs rzg2l_pins[7];
 } rzg2l_dedicated_pins = {
 	.common = {
-		{ "NMI", RZG2L_SINGLE_PIN_PACK(0x1, 0,
-		 (PIN_CFG_FILONOFF | PIN_CFG_FILNUM | PIN_CFG_FILCLKSEL)) },
+		{ "NMI", RZG2L_SINGLE_PIN_PACK(0x1, 0, PIN_CFG_NF) },
 		{ "TMS/SWDIO", RZG2L_SINGLE_PIN_PACK(0x2, 0,
 		 (PIN_CFG_IOLH_A | PIN_CFG_SR | PIN_CFG_IEN)) },
 		{ "TDO", RZG2L_SINGLE_PIN_PACK(0x3, 0,
@@ -2056,8 +2046,7 @@ static const struct {
 };
 
 static const struct rzg2l_dedicated_configs rzg3s_dedicated_pins[] = {
-	{ "NMI", RZG2L_SINGLE_PIN_PACK(0x0, 0, (PIN_CFG_FILONOFF | PIN_CFG_FILNUM |
-						PIN_CFG_FILCLKSEL)) },
+	{ "NMI", RZG2L_SINGLE_PIN_PACK(0x0, 0, PIN_CFG_NF) },
 	{ "TMS/SWDIO", RZG2L_SINGLE_PIN_PACK(0x1, 0, (PIN_CFG_IOLH_A | PIN_CFG_IEN |
 						      PIN_CFG_SOFT_PS)) },
 	{ "TDO", RZG2L_SINGLE_PIN_PACK(0x1, 1, (PIN_CFG_IOLH_A | PIN_CFG_SOFT_PS)) },
@@ -2096,8 +2085,7 @@ static const struct rzg2l_dedicated_configs rzg3s_dedicated_pins[] = {
 };
 
 static struct rzg2l_dedicated_configs rzv2h_dedicated_pins[] = {
-	{ "NMI", RZG2L_SINGLE_PIN_PACK(0x1, 0, (PIN_CFG_FILONOFF | PIN_CFG_FILNUM |
-						PIN_CFG_FILCLKSEL)) },
+	{ "NMI", RZG2L_SINGLE_PIN_PACK(0x1, 0, PIN_CFG_NF) },
 	{ "TMS_SWDIO", RZG2L_SINGLE_PIN_PACK(0x3, 0, (PIN_CFG_IOLH_RZV2H | PIN_CFG_SR |
 						      PIN_CFG_IEN)) },
 	{ "TDO", RZG2L_SINGLE_PIN_PACK(0x3, 2, (PIN_CFG_IOLH_RZV2H | PIN_CFG_SR)) },
-- 
2.34.1

Re: [PATCH 1/2] pinctrl: renesas: rzg2l: Introduce single macro for digital noise filter configuration

[Geert Uytterhoeven]

Hi Prabhakar,

Thanks for your patch!

On Tue, Aug 27, 2024 at 3:17 PM Prabhakar <prabhakar.csengg@gmail.com> wrote:
> From: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
>
> When enabling the digital noise filter for the pins, it is necessary to
> configure both the noise filter stages (via the FILNUM register) and the
> sampling interval (via the FILCLKSEL register). To simplify this process,
> we introduce a single macro for configuring the digital noise filter.

Currently the pin control tables just declare which pins support
digital noise filter configuration, but the driver does not support
configuring the digital noise filters yet, right?

So I'd reword the paragraph above to something like:

    Support for enabling the digital noise filter, and support for
    configuring the noise filter stages (via the FILNUM register) and the
    sampling interval (via the FILCLKSEL register) are related: a pin
    supports either all or none of them.  Hence simplify declaring digital
    noise filter support for a pin by using a single feature flag instead of
    three separate flags.

> This patch removes the PIN_CFG_FILNUM and PIN_CFG_FILCLKSEL configuration
> macros and renames PIN_CFG_FILONOFF to PIN_CFG_NF.
>
> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>

For the actual patch contents:
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

Re: [PATCH 1/2] pinctrl: renesas: rzg2l: Introduce single macro for digital noise filter configuration

[Lad, Prabhakar]

Hi Geert,

Thank you for the review.

On Thu, Aug 29, 2024 at 2:09 PM Geert Uytterhoeven <geert@linux-m68k.org> wrote:
>
> Hi Prabhakar,
>
> Thanks for your patch!
>
> On Tue, Aug 27, 2024 at 3:17 PM Prabhakar <prabhakar.csengg@gmail.com> wrote:
> > From: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
> >
> > When enabling the digital noise filter for the pins, it is necessary to
> > configure both the noise filter stages (via the FILNUM register) and the
> > sampling interval (via the FILCLKSEL register). To simplify this process,
> > we introduce a single macro for configuring the digital noise filter.
>
> Currently the pin control tables just declare which pins support
> digital noise filter configuration, but the driver does not support
> configuring the digital noise filters yet, right?
>
Yes that's right.

> So I'd reword the paragraph above to something like:
>
>     Support for enabling the digital noise filter, and support for
>     configuring the noise filter stages (via the FILNUM register) and the
>     sampling interval (via the FILCLKSEL register) are related: a pin
>     supports either all or none of them.  Hence simplify declaring digital
>     noise filter support for a pin by using a single feature flag instead of
>     three separate flags.
>
Ok, I'll update the commit description as above.

Cheers,
Prabhakar

> > This patch removes the PIN_CFG_FILNUM and PIN_CFG_FILCLKSEL configuration
> > macros and renames PIN_CFG_FILONOFF to PIN_CFG_NF.
> >
> > Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
>
> For the actual patch contents:
> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
>
> Gr{oetje,eeting}s,
>
>                         Geert
>
> --
> Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
>
> In personal conversations with technical people, I call myself a hacker. But
> when I'm talking to journalists I just say "programmer" or something like that.
>                                 -- Linus Torvalds

[PATCH 2/2] pinctrl: renesas: rzg2l: Move pinconf_to_config_argument() call outside of switch cases

[Prabhakar]

From: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>

Refactor the `rzg2l_pinctrl_pinconf_set()` function by moving the call to
`arg = pinconf_to_config_argument(_configs[i])` to the beginning of the
loop. Previously, this call was redundantly made in each case of the
switch statement.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
---
 drivers/pinctrl/renesas/pinctrl-rzg2l.c | 10 +---------
 1 file changed, 1 insertion(+), 9 deletions(-)

diff --git a/drivers/pinctrl/renesas/pinctrl-rzg2l.c b/drivers/pinctrl/renesas/pinctrl-rzg2l.c
index 8fc1f28d02d1..e742a4e3eb4a 100644
--- a/drivers/pinctrl/renesas/pinctrl-rzg2l.c
+++ b/drivers/pinctrl/renesas/pinctrl-rzg2l.c
@@ -1384,9 +1384,9 @@ static int rzg2l_pinctrl_pinconf_set(struct pinctrl_dev *pctldev,
 
 	for (i = 0; i < num_configs; i++) {
 		param = pinconf_to_config_param(_configs[i]);
+		arg = pinconf_to_config_argument(_configs[i]);
 		switch (param) {
 		case PIN_CONFIG_INPUT_ENABLE:
-			arg = pinconf_to_config_argument(_configs[i]);
 
 			if (!(cfg & PIN_CFG_IEN))
 				return -EINVAL;
@@ -1395,7 +1395,6 @@ static int rzg2l_pinctrl_pinconf_set(struct pinctrl_dev *pctldev,
 			break;
 
 		case PIN_CONFIG_OUTPUT_ENABLE:
-			arg = pinconf_to_config_argument(_configs[i]);
 			if (!(cfg & PIN_CFG_OEN))
 				return -EINVAL;
 			if (!pctrl->data->oen_write)
@@ -1410,8 +1409,6 @@ static int rzg2l_pinctrl_pinconf_set(struct pinctrl_dev *pctldev,
 			break;
 
 		case PIN_CONFIG_SLEW_RATE:
-			arg = pinconf_to_config_argument(_configs[i]);
-
 			if (!(cfg & PIN_CFG_SR) || arg > 1)
 				return -EINVAL;
 
@@ -1432,8 +1429,6 @@ static int rzg2l_pinctrl_pinconf_set(struct pinctrl_dev *pctldev,
 			break;
 
 		case PIN_CONFIG_DRIVE_STRENGTH:
-			arg = pinconf_to_config_argument(_configs[i]);
-
 			if (!(cfg & PIN_CFG_IOLH_A) || hwcfg->drive_strength_ua)
 				return -EINVAL;
 
@@ -1457,8 +1452,6 @@ static int rzg2l_pinctrl_pinconf_set(struct pinctrl_dev *pctldev,
 			break;
 
 		case PIN_CONFIG_OUTPUT_IMPEDANCE_OHMS:
-			arg = pinconf_to_config_argument(_configs[i]);
-
 			if (!(cfg & PIN_CFG_IOLH_B) || !hwcfg->iolh_groupb_oi[0])
 				return -EINVAL;
 
@@ -1476,7 +1469,6 @@ static int rzg2l_pinctrl_pinconf_set(struct pinctrl_dev *pctldev,
 			if (!(cfg & PIN_CFG_IOLH_RZV2H))
 				return -EINVAL;
 
-			arg = pinconf_to_config_argument(_configs[i]);
 			if (arg > 3)
 				return -EINVAL;
 			rzg2l_rmw_pin_config(pctrl, IOLH(off), bit, IOLH_MASK, arg);
-- 
2.34.1

Re: [PATCH 2/2] pinctrl: renesas: rzg2l: Move pinconf_to_config_argument() call outside of switch cases

[Geert Uytterhoeven]

Hi Prabhakar,

Thanks for your patch!

On Tue, Aug 27, 2024 at 3:17 PM Prabhakar <prabhakar.csengg@gmail.com> wrote:
> From: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
>
> Refactor the `rzg2l_pinctrl_pinconf_set()` function by moving the call to
> `arg = pinconf_to_config_argument(_configs[i])` to the beginning of the
> loop. Previously, this call was redundantly made in each case of the
> switch statement.

This is not 100% true: the PIN_CONFIG_BIAS_* cases do not
call pinconf_to_config_argument(). But I agree that calling it
unconditionally doesn't harm.

> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>

> --- a/drivers/pinctrl/renesas/pinctrl-rzg2l.c
> +++ b/drivers/pinctrl/renesas/pinctrl-rzg2l.c
> @@ -1395,7 +1395,6 @@ static int rzg2l_pinctrl_pinconf_set(struct pinctrl_dev *pctldev,
>                         break;
>
>                 case PIN_CONFIG_OUTPUT_ENABLE:
> -                       arg = pinconf_to_config_argument(_configs[i]);
>                         if (!(cfg & PIN_CFG_OEN))
>                                 return -EINVAL;
>                         if (!pctrl->data->oen_write)

Missed opportunity for simplification:

                case PIN_CONFIG_POWER_SOURCE:
-                       settings.power_source =
pinconf_to_config_argument(_configs[i]);
+                       settings.power_source = arg;
                        break;

> @@ -1432,8 +1429,6 @@ static int rzg2l_pinctrl_pinconf_set(struct pinctrl_dev *pctldev,
>                         break;
>
>                 case PIN_CONFIG_DRIVE_STRENGTH:
> -                       arg = pinconf_to_config_argument(_configs[i]);
> -
>                         if (!(cfg & PIN_CFG_IOLH_A) || hwcfg->drive_strength_ua)
>                                 return -EINVAL;
>

                case PIN_CONFIG_DRIVE_STRENGTH_UA:
                        ...
-                       settings.drive_strength_ua =
pinconf_to_config_argument(_configs[i]);
+                       settings.drive_strength_ua = arg;
                        break;

The rest LGTM.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

Re: [PATCH 2/2] pinctrl: renesas: rzg2l: Move pinconf_to_config_argument() call outside of switch cases

[Lad, Prabhakar]

Hi Geert,

Thank you for the review.

On Thu, Aug 29, 2024 at 2:15 PM Geert Uytterhoeven <geert@linux-m68k.org> wrote:
>
> Hi Prabhakar,
>
> Thanks for your patch!
>
> On Tue, Aug 27, 2024 at 3:17 PM Prabhakar <prabhakar.csengg@gmail.com> wrote:
> > From: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
> >
> > Refactor the `rzg2l_pinctrl_pinconf_set()` function by moving the call to
> > `arg = pinconf_to_config_argument(_configs[i])` to the beginning of the
> > loop. Previously, this call was redundantly made in each case of the
> > switch statement.
>
> This is not 100% true: the PIN_CONFIG_BIAS_* cases do not
> call pinconf_to_config_argument(). But I agree that calling it
> unconditionally doesn't harm.
>
Ok, I'll update the commit description to below:

Refactor the `rzg2l_pinctrl_pinconf_set()` function by moving the call to
`arg = pinconf_to_config_argument(_configs[i])` to the beginning of the
loop. Previously, this call was redundantly made in most cases within the
switch statement.

> > Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
>
> > --- a/drivers/pinctrl/renesas/pinctrl-rzg2l.c
> > +++ b/drivers/pinctrl/renesas/pinctrl-rzg2l.c
> > @@ -1395,7 +1395,6 @@ static int rzg2l_pinctrl_pinconf_set(struct pinctrl_dev *pctldev,
> >                         break;
> >
> >                 case PIN_CONFIG_OUTPUT_ENABLE:
> > -                       arg = pinconf_to_config_argument(_configs[i]);
> >                         if (!(cfg & PIN_CFG_OEN))
> >                                 return -EINVAL;
> >                         if (!pctrl->data->oen_write)
>
> Missed opportunity for simplification:
>
>                 case PIN_CONFIG_POWER_SOURCE:
> -                       settings.power_source =
> pinconf_to_config_argument(_configs[i]);
> +                       settings.power_source = arg;
>                         break;
>
And while at it I'll replace as above and below in the v2.

Cheers,
Prabhakar

> > @@ -1432,8 +1429,6 @@ static int rzg2l_pinctrl_pinconf_set(struct pinctrl_dev *pctldev,
> >                         break;
> >
> >                 case PIN_CONFIG_DRIVE_STRENGTH:
> > -                       arg = pinconf_to_config_argument(_configs[i]);
> > -
> >                         if (!(cfg & PIN_CFG_IOLH_A) || hwcfg->drive_strength_ua)
> >                                 return -EINVAL;
> >
>
>                 case PIN_CONFIG_DRIVE_STRENGTH_UA:
>                         ...
> -                       settings.drive_strength_ua =
> pinconf_to_config_argument(_configs[i]);
> +                       settings.drive_strength_ua = arg;
>                         break;
>
> The rest LGTM.
>
> Gr{oetje,eeting}s,
>
>                         Geert
>
> --
> Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
>
> In personal conversations with technical people, I call myself a hacker. But
> when I'm talking to journalists I just say "programmer" or something like that.
>                                 -- Linus Torvalds