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pinctrl: rockchip: Add mux range support while setting iomux

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When the pin is set as an iomux value that is outside its range,
it should return a failure, otherwise it may be overwritten with
incorrect value.

Change-Id: I381d9f5bf6f4bfa7d0512350e6b051bebf513d3e
Signed-off-by: David Wu <david.wu@rock-chips.com>
This commit is contained in:
David Wu
2018-08-29 16:37:04 +08:00
committed by Tao Huang
parent ab297f280f
commit b78e417d3f
1 changed files with 3 additions and 0 deletions
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3
drivers/pinctrl/pinctrl-rockchip.c
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@@ -1506,6 +1506,9 @@ static int rockchip_set_mux(struct rockchip_pin_bank *bank, int pin, int mux)
if (bank->recalced_mask & BIT(pin))
rockchip_get_recalced_mux(bank, pin, &reg, &bit, &mask);
if (mux > mask)
return -EINVAL;
if (bank->route_mask & BIT(pin)) {
if (rockchip_get_mux_route(bank, pin, mux, &route_reg,
&route_val)) {