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pinctrl: renesas: Protect GPIO leftovers by CONFIG_PINCTRL_SH_FUNC_GPIO
On SuperH and ARM SH/R-Mobile SoCs, the pin control driver handles GPIOs, too. To reduce code size when compiling a kernel supporting only modern SoCs, most, but not all, of the GPIO functionality is protected by checks for CONFIG_PINCTRL_SH_FUNC_GPIO. Factor out the remaining parts when not needed: 1. sh_pfc_soc_info.{in,out}put describe GPIO pins that have input resp. output capabilities (SuperH and SH/R-Mobile). 2. sh_pfc_soc_info.gpio_irq{,_size} describe the mapping from GPIO pins to interrupt numbers (SH/R-Mobile). 3. sh_pfc_gpio_set_direction() configures GPIO direction, called from the GPIO driver through pinctrl_gpio_direction_{in,out}put() (SH/R-Mobile). Unfortunately this function cannot just be moved to drivers/pinctrl/renesas/gpio.c, as it relies on knowledge of sh_pfc_pinctrl, which is internal to drivers/pinctrl/renesas/pinctrl.c. While code size reduction is minimal, this does help in documenting depencies. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20201028151637.1734130-9-geert+renesas@glider.be
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@ -315,6 +315,7 @@ int sh_pfc_config_mux(struct sh_pfc *pfc, unsigned mark, int pinmux_type)
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range = NULL;
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break;
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#ifdef CONFIG_PINCTRL_SH_PFC_GPIO
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case PINMUX_TYPE_OUTPUT:
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range = &pfc->info->output;
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break;
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@ -322,6 +323,7 @@ int sh_pfc_config_mux(struct sh_pfc *pfc, unsigned mark, int pinmux_type)
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case PINMUX_TYPE_INPUT:
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range = &pfc->info->input;
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break;
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#endif /* CONFIG_PINCTRL_SH_PFC_GPIO */
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default:
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return -EINVAL;
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@ -435,6 +435,7 @@ static void sh_pfc_gpio_disable_free(struct pinctrl_dev *pctldev,
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spin_unlock_irqrestore(&pfc->lock, flags);
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}
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#ifdef CONFIG_PINCTRL_SH_PFC_GPIO
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static int sh_pfc_gpio_set_direction(struct pinctrl_dev *pctldev,
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struct pinctrl_gpio_range *range,
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unsigned offset, bool input)
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@ -462,6 +463,9 @@ static int sh_pfc_gpio_set_direction(struct pinctrl_dev *pctldev,
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spin_unlock_irqrestore(&pfc->lock, flags);
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return ret;
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}
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#else
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#define sh_pfc_gpio_set_direction NULL
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#endif
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static const struct pinmux_ops sh_pfc_pinmux_ops = {
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.get_functions_count = sh_pfc_get_functions_count,
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@ -270,8 +270,13 @@ struct sh_pfc_soc_info {
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const char *name;
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const struct sh_pfc_soc_operations *ops;
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#ifdef CONFIG_PINCTRL_SH_PFC_GPIO
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struct pinmux_range input;
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struct pinmux_range output;
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const struct pinmux_irq *gpio_irq;
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unsigned int gpio_irq_size;
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#endif
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struct pinmux_range function;
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const struct sh_pfc_pin *pins;
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@ -295,9 +300,6 @@ struct sh_pfc_soc_info {
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const u16 *pinmux_data;
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unsigned int pinmux_data_size;
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const struct pinmux_irq *gpio_irq;
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unsigned int gpio_irq_size;
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u32 unlock_reg;
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};
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