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pinctrl: aspeed: Fix GPI only function problem. 

[ Upstream commit 9b92f5c51e ]

Some gpio pin at aspeed soc is input only and the prefix name of these
pin is "GPI" only.
This patch fine-tune the condition of GPIO check from "GPIO" to "GPI"
and it will fix the usage error of banks D and E in the AST2400/AST2500
and banks T and U in the AST2600.

Fixes: 4d3d0e4272 ("pinctrl: Add core support for Aspeed SoCs")
Signed-off-by: Billy Tsai <billy_tsai@aspeedtech.com>
Reviewed-by: Andrew Jeffery <andrew@aj.id.au>
Link: https://lore.kernel.org/r/20201030055450.29613-1-billy_tsai@aspeedtech.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5.4-rM2-2.2.x-imx-squashed
Billy Tsai 2020-10-30 13:54:50 +08:00 committed by Greg Kroah-Hartman
parent d2e61c5202
commit e74e514c8c
1 changed files with 4 additions and 3 deletions
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7
drivers/pinctrl/aspeed/pinctrl-aspeed.c
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@ -277,13 +277,14 @@ int aspeed_pinmux_set_mux(struct pinctrl_dev *pctldev, unsigned int function,
static bool aspeed_expr_is_gpio(const struct aspeed_sig_expr *expr)
{
/*
* The signal type is GPIO if the signal name has "GPIO" as a prefix.
* The signal type is GPIO if the signal name has "GPI" as a prefix.
* strncmp (rather than strcmp) is used to implement the prefix
* requirement.
*
* expr->signal might look like "GPIOT3" in the GPIO case.
* expr->signal might look like "GPIOB1" in the GPIO case.
* expr->signal might look like "GPIT0" in the GPI case.
*/
return strncmp(expr->signal, "GPIO", 4) == 0;
return strncmp(expr->signal, "GPI", 3) == 0;
}
static bool aspeed_gpio_in_exprs(const struct aspeed_sig_expr **exprs)