linux-kernel - [RESEND PATCH] ARM: pinctrl: sunxi-pinctrl: fix pin funtion can not be match correctly.

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Date:   Tue, 9 Jan 2018 13:59:02 +0800
From:   hao_zhang <hao5781286@...il.com>
To:     maxime.ripard@...e-electrons.com, wens@...e.org,
        linus.walleij@...aro.org
Cc:     linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-gpio@...r.kernel.org, hao5781286@...il.com
Subject: [RESEND PATCH] ARM: pinctrl: sunxi-pinctrl: fix pin funtion can not
 be match correctly.

Pin function can not be match correctly when SUNXI_PIN describe with
mutiple variant and same function.

such as:
on pinctrl-sun4i-a10.c

SUNXI_PIN(SUNXI_PINCTRL_PIN(B, 2),
		SUNXI_FUNCTION(0x0, "gpio_in"),
		SUNXI_FUNCTION(0x1, "gpio_out"),
		SUNXI_FUNCTION_VARIANT(0x2, "pwm",    /* PWM0 */
			PINCTRL_SUN4I_A10 |
			PINCTRL_SUN7I_A20),
		SUNXI_FUNCTION_VARIANT(0x3, "pwm",    /* PWM0 */
			PINCTRL_SUN8I_R40)),

it would always match to the first variant function
(PINCTRL_SUN4I_A10, PINCTRL_SUN7I_A20)

so we should add variant compare on it.

Regards
Hao

Signed-off-by: hao_zhang <hao5781286@...il.com>
---
 drivers/pinctrl/sunxi/pinctrl-sunxi.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/pinctrl/sunxi/pinctrl-sunxi.c b/drivers/pinctrl/sunxi/pinctrl-sunxi.c
index 4b6cb25..131adf7 100644
--- a/drivers/pinctrl/sunxi/pinctrl-sunxi.c
+++ b/drivers/pinctrl/sunxi/pinctrl-sunxi.c
@@ -83,7 +83,9 @@ sunxi_pinctrl_desc_find_function_by_name(struct sunxi_pinctrl *pctl,
 			struct sunxi_desc_function *func = pin->functions;
 
 			while (func->name) {
-				if (!strcmp(func->name, func_name))
+				if (!strcmp(func->name, func_name) &&
+					(!func->variant ||
+					func->variant & pctl->variant))
 					return func;
 
 				func++;
-- 
2.7.4