linux-kernel - [PATCH v2 2/2] pinctrl: ocelot: Fix pincfg

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Message-ID: <20220708195510.2951661-3-horatiu.vultur@microchip.com>
Date:   Fri, 8 Jul 2022 21:55:10 +0200
From:   Horatiu Vultur <horatiu.vultur@...rochip.com>
To:     <linux-gpio@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC:     <linus.walleij@...aro.org>, <kavyasree.kotagiri@...rochip.com>,
        <alexandre.belloni@...tlin.com>, <colin.foster@...advantage.com>,
        <UNGLinuxDriver@...rochip.com>, <maxime.chevallier@...tlin.com>,
        <michael@...le.cc>, Horatiu Vultur <horatiu.vultur@...rochip.com>
Subject: [PATCH v2 2/2] pinctrl: ocelot: Fix pincfg

The blamed commit changed to use regmaps instead of __iomem. But it
didn't update the register offsets to be at word offset, so it uses byte
offset.
Another issue with the same commit is that it a limit of 32 registers
which is incorrect. The sparx5 has 64 while lan966x has 77.

Fixes: 076d9e71bcf8 ("pinctrl: ocelot: convert pinctrl to regmap")
Signed-off-by: Horatiu Vultur <horatiu.vultur@...rochip.com>
---
 drivers/pinctrl/pinctrl-ocelot.c | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/drivers/pinctrl/pinctrl-ocelot.c b/drivers/pinctrl/pinctrl-ocelot.c
index 10787056c5c7..d88d6af71e46 100644
--- a/drivers/pinctrl/pinctrl-ocelot.c
+++ b/drivers/pinctrl/pinctrl-ocelot.c
@@ -1334,7 +1334,9 @@ static int ocelot_hw_get_value(struct ocelot_pinctrl *info,
 	if (info->pincfg) {
 		u32 regcfg;
 
-		ret = regmap_read(info->pincfg, pin, &regcfg);
+		ret = regmap_read(info->pincfg,
+				  pin * regmap_get_reg_stride(info->pincfg),
+				  &regcfg);
 		if (ret)
 			return ret;
 
@@ -1368,14 +1370,18 @@ static int ocelot_pincfg_clrsetbits(struct ocelot_pinctrl *info, u32 regaddr,
 	u32 val;
 	int ret;
 
-	ret = regmap_read(info->pincfg, regaddr, &val);
+	ret = regmap_read(info->pincfg,
+			  regaddr * regmap_get_reg_stride(info->pincfg),
+			  &val);
 	if (ret)
 		return ret;
 
 	val &= ~clrbits;
 	val |= setbits;
 
-	ret = regmap_write(info->pincfg, regaddr, val);
+	ret = regmap_write(info->pincfg,
+			   regaddr * regmap_get_reg_stride(info->pincfg),
+			   val);
 
 	return ret;
 }
@@ -1944,7 +1950,6 @@ static struct regmap *ocelot_pinctrl_create_pincfg(struct platform_device *pdev)
 		.reg_bits = 32,
 		.val_bits = 32,
 		.reg_stride = 4,
-		.max_register = 32,
 		.name = "pincfg",
 	};
 
-- 
2.33.0