linux-kernel - [RFT PATCH] mtd: rawnand: ingenic: move the GPIO quirk to gpiolib-of.c

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Date:   Tue, 26 Sep 2023 11:06:23 +0200
From:   Bartosz Golaszewski <brgl@...ev.pl>
To:     Linus Walleij <linus.walleij@...aro.org>,
        Bartosz Golaszewski <brgl@...ev.pl>,
        Andy Shevchenko <andy@...nel.org>,
        Harvey Hunt <harveyhuntnexus@...il.com>,
        Paul Cercueil <paul@...pouillou.net>,
        Miquel Raynal <miquel.raynal@...tlin.com>,
        Richard Weinberger <richard@....at>,
        Vignesh Raghavendra <vigneshr@...com>
Cc:     linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-mtd@...ts.infradead.org, linux-mips@...r.kernel.org,
        Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
Subject: [RFT PATCH] mtd: rawnand: ingenic: move the GPIO quirk to gpiolib-of.c

From: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>

We have a special place for OF polarity quirks in gpiolib-of.c. Let's
move this over there so that it doesn't pollute the driver.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
---
This is an alternative to the previous patch that instead of replacing
one active-low setter with another, just moves the quirk over to
gpiolib-of.c

 drivers/gpio/gpiolib-of.c                       |  9 +++++++++
 drivers/mtd/nand/raw/ingenic/ingenic_nand_drv.c | 12 ------------
 2 files changed, 9 insertions(+), 12 deletions(-)

diff --git a/drivers/gpio/gpiolib-of.c b/drivers/gpio/gpiolib-of.c
index 5515f32cf19b..58c0bbe9d569 100644
--- a/drivers/gpio/gpiolib-of.c
+++ b/drivers/gpio/gpiolib-of.c
@@ -192,6 +192,15 @@ static void of_gpio_try_fixup_polarity(const struct device_node *np,
 		 */
 		{ "himax,hx8357",	"gpios-reset",	false },
 		{ "himax,hx8369",	"gpios-reset",	false },
+		/*
+		 * The rb-gpios semantics was undocumented and qi,lb60 (along with
+		 * the ingenic driver) got it wrong. The active state encodes the
+		 * NAND ready state, which is high level. Since there's no signal
+		 * inverter on this board, it should be active-high. Let's fix that
+		 * here for older DTs so we can re-use the generic nand_gpio_waitrdy()
+		 * helper, and be consistent with what other drivers do.
+		 */
+		{ "qi,lb60",		"rb-gpios",	true },
 #endif
 	};
 	unsigned int i;
diff --git a/drivers/mtd/nand/raw/ingenic/ingenic_nand_drv.c b/drivers/mtd/nand/raw/ingenic/ingenic_nand_drv.c
index 6748226b8bd1..c816dc137245 100644
--- a/drivers/mtd/nand/raw/ingenic/ingenic_nand_drv.c
+++ b/drivers/mtd/nand/raw/ingenic/ingenic_nand_drv.c
@@ -380,18 +380,6 @@ static int ingenic_nand_init_chip(struct platform_device *pdev,
 		return ret;
 	}
 
-	/*
-	 * The rb-gpios semantics was undocumented and qi,lb60 (along with
-	 * the ingenic driver) got it wrong. The active state encodes the
-	 * NAND ready state, which is high level. Since there's no signal
-	 * inverter on this board, it should be active-high. Let's fix that
-	 * here for older DTs so we can re-use the generic nand_gpio_waitrdy()
-	 * helper, and be consistent with what other drivers do.
-	 */
-	if (of_machine_is_compatible("qi,lb60") &&
-	    gpiod_is_active_low(nand->busy_gpio))
-		gpiod_toggle_active_low(nand->busy_gpio);
-
 	nand->wp_gpio = devm_gpiod_get_optional(dev, "wp", GPIOD_OUT_LOW);
 
 	if (IS_ERR(nand->wp_gpio)) {
-- 
2.39.2