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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>
This commit is contained in:
Claudiu Beznea 2019-03-25 10:33:57 +00:00 committed by Eugen Hristev
parent 04d4ec9c57
commit 1a6a82882e
1 changed files with 34 additions and 0 deletions
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34
drivers/pinctrl/pinctrl-at91.c
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@ -248,6 +248,28 @@ static void at91_mux_sam9x5_set_drivestrength(struct at91_port *pio,
set_drive_strength(reg, pin, setting);
}
static void at91_mux_sam9x60_set_drivestrength(struct at91_port *pio, u32 pin,
u32 setting)
{
void *reg = &pio->driver12;
u32 tmp;
if (setting <= DRIVE_STRENGTH_BIT_DEF ||
setting == DRIVE_STRENGTH_BIT_MED ||
setting > DRIVE_STRENGTH_BIT_HI)
return;
tmp = readl(reg);
/* Strength is 0: low, 1: hi */
if (setting == DRIVE_STRENGTH_BIT_LOW)
tmp &= ~BIT(pin);
else
tmp |= BIT(pin);
writel(tmp, reg);
}
static struct at91_pinctrl_mux_ops at91rm9200_ops = {
.mux_A_periph = at91_mux_set_A_periph,
.mux_B_periph = at91_mux_set_B_periph,
@ -278,6 +300,18 @@ static struct at91_pinctrl_mux_ops sama5d3_ops = {
.set_drivestrength = at91_mux_sama5d3_set_drivestrength,
};
static struct at91_pinctrl_mux_ops sam9x60_ops = {
.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,
.set_deglitch = at91_mux_pio3_set_deglitch,
.set_debounce = at91_mux_pio3_set_debounce,
.set_pulldown = at91_mux_pio3_set_pulldown,
.disable_schmitt_trig = at91_mux_pio3_disable_schmitt_trig,
.set_drivestrength = at91_mux_sam9x60_set_drivestrength,
};
static void at91_mux_gpio_disable(struct at91_port *pio, u32 mask)
{
writel(mask, &pio->pdr);