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pinctrl: rockchip: support unrouted iomuxes per bank 

On the upcoming RK3288 SoC contain some unrouted pins in their banks. So while
for example pin8 of bank5 stays pin8 with all its settings (register offset etc),
pins 0 to 7 are not routed outside the SoC at all.
Therefore add a flag to mark these unrouted iomuxes to prevent people from using
them.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
hifive-unleashed-5.1
Heiko Stübner 2014-06-16 01:37:49 +02:00 committed by Linus Walleij
parent 95ec8ae449
commit 62f49226b0
1 changed files with 11 additions and 0 deletions
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11
drivers/pinctrl/pinctrl-rockchip.c
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@ -70,6 +70,7 @@ enum rockchip_pinctrl_type {
#define IOMUX_GPIO_ONLY BIT(0)
#define IOMUX_WIDTH_4BIT BIT(1)
#define IOMUX_SOURCE_PMU BIT(2)
#define IOMUX_UNROUTED BIT(3)
/**
* @type: iomux variant using IOMUX_* constants
@ -386,6 +387,11 @@ static int rockchip_get_mux(struct rockchip_pin_bank *bank, int pin)
if (iomux_num > 3)
return -EINVAL;
if (bank->iomux[iomux_num].type & IOMUX_UNROUTED) {
dev_err(info->dev, "pin %d is unrouted\n", pin);
return -EINVAL;
}
if (bank->iomux[iomux_num].type & IOMUX_GPIO_ONLY)
return RK_FUNC_GPIO;
@ -436,6 +442,11 @@ static int rockchip_set_mux(struct rockchip_pin_bank *bank, int pin, int mux)
if (iomux_num > 3)
return -EINVAL;
if (bank->iomux[iomux_num].type & IOMUX_UNROUTED) {
dev_err(info->dev, "pin %d is unrouted\n", pin);
return -EINVAL;
}
if (bank->iomux[iomux_num].type & IOMUX_GPIO_ONLY) {
if (mux != RK_FUNC_GPIO) {
dev_err(info->dev,