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pinctrl: at91: add drive strength support for SAM9X60

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Add drive strength support for SAM9X60 pin controller.

Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Acked-by: Ludovic Desroches <ludovic.desroches@microchip.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Claudiu Beznea 2019-02-07 09:24:49 +00:00 committed by Linus Walleij
parent b67328e1cf
commit 42ef75576b
2 changed files with 54 additions and 0 deletions
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52
drivers/pinctrl/pinctrl-at91.c
View File

@ -574,6 +574,17 @@ static unsigned at91_mux_sam9x5_get_drivestrength(void __iomem *pio,
return tmp;
}
static unsigned at91_mux_sam9x60_get_drivestrength(void __iomem *pio,
unsigned pin)
{
unsigned tmp = readl_relaxed(pio + SAM9X60_PIO_DRIVER1);
if (tmp & BIT(pin))
return DRIVE_STRENGTH_BIT_HI;
return DRIVE_STRENGTH_BIT_LOW;
}
static void set_drive_strength(void __iomem *reg, unsigned pin, u32 strength)
{
unsigned tmp = readl_relaxed(reg);
@ -611,6 +622,27 @@ static void at91_mux_sam9x5_set_drivestrength(void __iomem *pio, unsigned pin,
setting);
}
static void at91_mux_sam9x60_set_drivestrength(void __iomem *pio, unsigned pin,
u32 setting)
{
unsigned int tmp;
if (setting <= DRIVE_STRENGTH_BIT_DEF ||
setting == DRIVE_STRENGTH_BIT_MED ||
setting > DRIVE_STRENGTH_BIT_HI)
return;
tmp = readl_relaxed(pio + SAM9X60_PIO_DRIVER1);
/* Strength is 0: low, 1: hi */
if (setting == DRIVE_STRENGTH_BIT_LOW)
tmp &= ~BIT(pin);
else
tmp |= BIT(pin);
writel_relaxed(tmp, pio + SAM9X60_PIO_DRIVER1);
}
static struct at91_pinctrl_mux_ops at91rm9200_ops = {
.get_periph = at91_mux_get_periph,
.mux_A_periph = at91_mux_set_A_periph,
@ -639,6 +671,26 @@ static struct at91_pinctrl_mux_ops at91sam9x5_ops = {
.irq_type = alt_gpio_irq_type,
};
static const struct at91_pinctrl_mux_ops sam9x60_ops = {
.get_periph = at91_mux_pio3_get_periph,
.mux_A_periph = at91_mux_pio3_set_A_periph,
.mux_B_periph = at91_mux_pio3_set_B_periph,
.mux_C_periph = at91_mux_pio3_set_C_periph,
.mux_D_periph = at91_mux_pio3_set_D_periph,
.get_deglitch = at91_mux_pio3_get_deglitch,
.set_deglitch = at91_mux_pio3_set_deglitch,
.get_debounce = at91_mux_pio3_get_debounce,
.set_debounce = at91_mux_pio3_set_debounce,
.get_pulldown = at91_mux_pio3_get_pulldown,
.set_pulldown = at91_mux_pio3_set_pulldown,
.get_schmitt_trig = at91_mux_pio3_get_schmitt_trig,
.disable_schmitt_trig = at91_mux_pio3_disable_schmitt_trig,
.get_drivestrength = at91_mux_sam9x60_get_drivestrength,
.set_drivestrength = at91_mux_sam9x60_set_drivestrength,
.irq_type = alt_gpio_irq_type,
};
static struct at91_pinctrl_mux_ops sama5d3_ops = {
.get_periph = at91_mux_pio3_get_periph,
.mux_A_periph = at91_mux_pio3_set_A_periph,

2
drivers/pinctrl/pinctrl-at91.h
View File

@ -69,4 +69,6 @@
#define AT91SAM9X5_PIO_DRIVER1 0x114 /*PIO Driver 1 register offset*/
#define AT91SAM9X5_PIO_DRIVER2 0x118 /*PIO Driver 2 register offset*/
#define SAM9X60_PIO_DRIVER1 0x118 /* PIO Driver 1 register offset */
#endif