[PATCH v2 6/6] pinctrl: sh-pfc: Confine legacy function GPIOs to SH

[Geert Uytterhoeven <geert+renesas@glider.be>]

Legacy function GPIOs are no longer used on ARM since commit
a27c5cd1a08cc95c ("sh-pfc: sh73a0: Remove function GPIOs").
Extract its setup code into a separate function, and make all function
GPIO related code and data depend on CONFIG_SUPERH.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
---
Compile-tested on sh using se7724_defconfig.

v2:
  - Add Acked-by,
  - #ifdef out the code instead of introducing helper and dummy
    functions.
---
 drivers/pinctrl/sh-pfc/core.h   | 2 ++
 drivers/pinctrl/sh-pfc/gpio.c   | 7 ++++++-
 drivers/pinctrl/sh-pfc/sh_pfc.h | 2 ++
 3 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/drivers/pinctrl/sh-pfc/core.h b/drivers/pinctrl/sh-pfc/core.h
index 4c3c37bf7161804d..c38ace46d7111b0d 100644
--- a/drivers/pinctrl/sh-pfc/core.h
+++ b/drivers/pinctrl/sh-pfc/core.h
@@ -46,7 +46,9 @@ struct sh_pfc {
 	unsigned int nr_gpio_pins;
 
 	struct sh_pfc_chip *gpio;
+#ifdef CONFIG_SUPERH
 	struct sh_pfc_chip *func;
+#endif
 
 	struct sh_pfc_pinctrl *pinctrl;
 };
diff --git a/drivers/pinctrl/sh-pfc/gpio.c b/drivers/pinctrl/sh-pfc/gpio.c
index e46439030914ad13..685b3c24627daf03 100644
--- a/drivers/pinctrl/sh-pfc/gpio.c
+++ b/drivers/pinctrl/sh-pfc/gpio.c
@@ -261,6 +261,7 @@ static int gpio_pin_setup(struct sh_pfc_chip *chip)
  * Function GPIOs
  */
 
+#ifdef CONFIG_SUPERH
 static int gpio_function_request(struct gpio_chip *gc, unsigned offset)
 {
 	static bool __print_once;
@@ -300,6 +301,7 @@ static int gpio_function_setup(struct sh_pfc_chip *chip)
 
 	return 0;
 }
+#endif
 
 /* -----------------------------------------------------------------------------
  * Register/unregister
@@ -399,6 +401,7 @@ int sh_pfc_register_gpiochip(struct sh_pfc *pfc)
 		}
 	}
 
+#ifdef CONFIG_SUPERH
 	/* Register the function GPIOs chip. */
 	if (pfc->info->nr_func_gpios = 0)
 		return 0;
@@ -408,6 +411,7 @@ int sh_pfc_register_gpiochip(struct sh_pfc *pfc)
 		return PTR_ERR(chip);
 
 	pfc->func = chip;
+#endif /* CONFIG_SUPERH */
 
 	return 0;
 }
@@ -415,7 +419,8 @@ int sh_pfc_register_gpiochip(struct sh_pfc *pfc)
 int sh_pfc_unregister_gpiochip(struct sh_pfc *pfc)
 {
 	gpiochip_remove(&pfc->gpio->gpio_chip);
+#ifdef CONFIG_SUPERH
 	gpiochip_remove(&pfc->func->gpio_chip);
-
+#endif
 	return 0;
 }
diff --git a/drivers/pinctrl/sh-pfc/sh_pfc.h b/drivers/pinctrl/sh-pfc/sh_pfc.h
index 0874cfee6889afa1..1f43bae56065e659 100644
--- a/drivers/pinctrl/sh-pfc/sh_pfc.h
+++ b/drivers/pinctrl/sh-pfc/sh_pfc.h
@@ -138,8 +138,10 @@ struct sh_pfc_soc_info {
 	const struct sh_pfc_function *functions;
 	unsigned int nr_functions;
 
+#ifdef CONFIG_SUPERH
 	const struct pinmux_func *func_gpios;
 	unsigned int nr_func_gpios;
+#endif
 
 	const struct pinmux_cfg_reg *cfg_regs;
 	const struct pinmux_data_reg *data_regs;
-- 
1.9.1