This is a note to let you know that I've just added the patch titled
gpio: rockchip: request GPIO mux to pinctrl when setting direction
to the 6.0-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
gpio-rockchip-request-gpio-mux-to-pinctrl-when-setting-direction.patch
and it can be found in the queue-6.0 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 8ea8af6c8469156ac2042d83d73f6b74eb4b4b45 Mon Sep 17 00:00:00 2001
From: Quentin Schulz <quentin.schulz@xxxxxxxxxxxxxxxxxxxxx>
Date: Fri, 30 Sep 2022 15:20:33 +0200
Subject: gpio: rockchip: request GPIO mux to pinctrl when setting direction
From: Quentin Schulz <quentin.schulz@xxxxxxxxxxxxxxxxxxxxx>
commit 8ea8af6c8469156ac2042d83d73f6b74eb4b4b45 upstream.
Before the split of gpio and pinctrl sections in their own driver,
rockchip_set_mux was called in pinmux_ops.gpio_set_direction for
configuring a pin in its GPIO function.
This is essential for cases where pinctrl is "bypassed" by gpio
consumers otherwise the GPIO function is not configured for the pin and
it does not work. Such was the case for the sysfs/libgpiod userspace
GPIO handling.
Let's call pinctrl_gpio_direction_input/output when setting the
direction of a GPIO so that the pinctrl core requests from the rockchip
pinctrl driver to put the pin in its GPIO function.
Fixes: 9ce9a02039de ("pinctrl/rockchip: drop the gpio related codes")
Fixes: 936ee2675eee ("gpio/rockchip: add driver for rockchip gpio")
Cc: stable@xxxxxxxxxxxxxxx
Reviewed-by: Heiko Stuebner <heiko@xxxxxxxxx>
Signed-off-by: Quentin Schulz <quentin.schulz@xxxxxxxxxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20220930132033.4003377-3-foss+kernel@xxxxxxxxx
Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpio/gpio-rockchip.c | 7 +++++++
1 file changed, 7 insertions(+)
--- a/drivers/gpio/gpio-rockchip.c
+++ b/drivers/gpio/gpio-rockchip.c
@@ -19,6 +19,7 @@
#include <linux/of_address.h>
#include <linux/of_device.h>
#include <linux/of_irq.h>
+#include <linux/pinctrl/consumer.h>
#include <linux/pinctrl/pinconf-generic.h>
#include <linux/regmap.h>
@@ -156,6 +157,12 @@ static int rockchip_gpio_set_direction(s
unsigned long flags;
u32 data = input ? 0 : 1;
+
+ if (input)
+ pinctrl_gpio_direction_input(bank->pin_base + offset);
+ else
+ pinctrl_gpio_direction_output(bank->pin_base + offset);
+
raw_spin_lock_irqsave(&bank->slock, flags);
rockchip_gpio_writel_bit(bank, offset, data, bank->gpio_regs->port_ddr);
raw_spin_unlock_irqrestore(&bank->slock, flags);
Patches currently in stable-queue which might be from quentin.schulz@xxxxxxxxxxxxxxxxxxxxx are
queue-6.0/pinctrl-rockchip-add-pinmux_ops.gpio_set_direction-callback.patch
queue-6.0/gpio-rockchip-request-gpio-mux-to-pinctrl-when-setting-direction.patch
