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pinctrl: renesas: rcar: Do not enforce GPIO if already muxed 

For Renesas PFCs not setting .strict, we can snoop GPIOs which are
already muxed to some other function.  To actually make use of that, we
shouldn't mux them back to GPIO if they have been already muxed to
something.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://lore.kernel.org/r/20211210113226.40111-1-wsa+renesas@sang-engineering.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
This commit is contained in:
Wolfram Sang 2021-12-10 12:32:26 +01:00 committed by Geert Uytterhoeven
parent e783362eb5
commit 9ca70f4202
1 changed files with 1 additions and 1 deletions
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2
drivers/pinctrl/renesas/pinctrl.c
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@ -397,7 +397,7 @@ static int sh_pfc_gpio_request_enable(struct pinctrl_dev *pctldev,
spin_lock_irqsave(&pfc->lock, flags);
if (!pfc->gpio) {
if (!pfc->gpio && !cfg->mux_mark) {
/* If GPIOs are handled externally the pin mux type needs to be
* set to GPIO here.
*/