[PATCH v2 1/2] pinctrl: at91: add pinctrl driver

[Sascha Hauer]

On Tue, Aug 05, 2014 at 01:09:16PM -0700, Raphaël Poggi wrote:
> diff --git a/drivers/pinctrl/pinctrl-at91.h b/drivers/pinctrl/pinctrl-at91.h
> new file mode 100644
> index 0000000..e719fb8
> --- /dev/null
> +++ b/drivers/pinctrl/pinctrl-at91.h
> @@ -0,0 +1,148 @@
> +/*
> + * Copyright (C) 2011-2012 Jean-Christophe PLAGNIOL-VILLARD <plagnioj at jcrosoft.com>
> + *
> + * Under GPLv2 only
> + */
> +
> +#ifndef __AT91_GPIO_H__
> +#define __AT91_GPIO_H__
> +
> +#ifndef __gpio_init
> +#define __gpio_init
> +#endif
> +
> +#define MAX_NB_GPIO_PER_BANK	32
> +
> +static inline unsigned pin_to_bank(unsigned pin)
> +{
> +	return pin / MAX_NB_GPIO_PER_BANK;
> +}
> +
> +static inline unsigned pin_to_bank_offset(unsigned pin)
> +{
> +	return pin % MAX_NB_GPIO_PER_BANK;
> +}
> +
> +static inline unsigned pin_to_mask(unsigned pin)
> +{
> +	return 1 << pin_to_bank_offset(pin);
> +}
> +
> +static inline void at91_mux_disable_interrupt(void __iomem *pio, unsigned mask)
> +{
> +	__raw_writel(mask, pio + PIO_IDR);
> +}
> +
> +static inline void at91_mux_set_pullup(void __iomem *pio, unsigned mask, bool on)
> +{
> +	__raw_writel(mask, pio + (on ? PIO_PUER : PIO_PUDR));
> +}
> +
> +static inline void at91_mux_set_multidrive(void __iomem *pio, unsigned mask, bool on)
> +{
> +	__raw_writel(mask, pio + (on ? PIO_MDER : PIO_MDDR));
> +}
> +
> +static inline void at91_mux_set_A_periph(void __iomem *pio, unsigned mask)
> +{
> +	__raw_writel(mask, pio + PIO_ASR);
> +}
> +
> +static inline void at91_mux_set_B_periph(void __iomem *pio, unsigned mask)
> +{
> +	__raw_writel(mask, pio + PIO_BSR);
> +}
> +
> +static inline void at91_mux_pio3_set_A_periph(void __iomem *pio, unsigned mask)
> +{
> +
> +	__raw_writel(__raw_readl(pio + PIO_ABCDSR1) & ~mask,
> +						pio + PIO_ABCDSR1);
> +	__raw_writel(__raw_readl(pio + PIO_ABCDSR2) & ~mask,
> +						pio + PIO_ABCDSR2);
> +}
> +
> +static inline void at91_mux_pio3_set_B_periph(void __iomem *pio, unsigned mask)
> +{
> +	__raw_writel(__raw_readl(pio + PIO_ABCDSR1) | mask,
> +						pio + PIO_ABCDSR1);
> +	__raw_writel(__raw_readl(pio + PIO_ABCDSR2) & ~mask,
> +						pio + PIO_ABCDSR2);
> +}
> +
> +static inline void at91_mux_pio3_set_C_periph(void __iomem *pio, unsigned mask)
> +{
> +	__raw_writel(__raw_readl(pio + PIO_ABCDSR1) & ~mask, pio + PIO_ABCDSR1);
> +	__raw_writel(__raw_readl(pio + PIO_ABCDSR2) | mask, pio + PIO_ABCDSR2);
> +}
> +
> +static inline void at91_mux_pio3_set_D_periph(void __iomem *pio, unsigned mask)
> +{
> +	__raw_writel(__raw_readl(pio + PIO_ABCDSR1) | mask, pio + PIO_ABCDSR1);
> +	__raw_writel(__raw_readl(pio + PIO_ABCDSR2) | mask, pio + PIO_ABCDSR2);
> +}
> +
> +static inline void at91_mux_set_deglitch(void __iomem *pio, unsigned mask, bool is_on)
> +{
> +	__raw_writel(mask, pio + (is_on ? PIO_IFER : PIO_IFDR));
> +}
> +
> +static inline void at91_mux_pio3_set_deglitch(void __iomem *pio, unsigned mask, bool is_on)
> +{
> +	if (is_on)
> +		__raw_writel(mask, pio + PIO_IFSCDR);
> +	at91_mux_set_deglitch(pio, mask, is_on);
> +}
> +
> +static inline void at91_mux_pio3_set_debounce(void __iomem *pio, unsigned mask,
> +				bool is_on, u32 div)
> +{
> +	if (is_on) {
> +		__raw_writel(mask, pio + PIO_IFSCER);
> +		__raw_writel(div & PIO_SCDR_DIV, pio + PIO_SCDR);
> +		__raw_writel(mask, pio + PIO_IFER);
> +	} else {
> +		__raw_writel(mask, pio + PIO_IFDR);
> +	}
> +}
> +
> +static inline void at91_mux_pio3_set_pulldown(void __iomem *pio, unsigned mask, bool is_on)
> +{
> +	__raw_writel(mask, pio + (is_on ? PIO_PPDER : PIO_PPDDR));
> +}
> +
> +static inline void at91_mux_pio3_disable_schmitt_trig(void __iomem *pio, unsigned mask)
> +{
> +	__raw_writel(__raw_readl(pio + PIO_SCHMITT) | mask, pio + PIO_SCHMITT);
> +}
> +
> +static inline void at91_mux_gpio_disable(void __iomem *pio, unsigned mask)
> +{
> +	__raw_writel(mask, pio + PIO_PDR);
> +}
> +
> +static inline void at91_mux_gpio_enable(void __iomem *pio, unsigned mask)
> +{
> +	__raw_writel(mask, pio + PIO_PER);
> +}
> +
> +static inline void at91_mux_gpio_input(void __iomem *pio, unsigned mask, bool input)
> +{
> +	__raw_writel(mask, pio + (input ? PIO_ODR : PIO_OER));
> +}
> +
> +static inline void at91_mux_gpio_set(void __iomem *pio, unsigned mask,
> +int value)
> +{
> +	__raw_writel(mask, pio + (value ? PIO_SODR : PIO_CODR));
> +}
> +
> +static inline int at91_mux_gpio_get(void __iomem *pio, unsigned mask)
> +{
> +       u32 pdsr;
> +
> +       pdsr = __raw_readl(pio + PIO_PDSR);
> +       return (pdsr & mask) != 0;
> +}

We already have all these functions in arch/arm/mach-at91/gpio.h. Do we
really need them twice? Can't we use a single header file?

Sascha

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