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From: Heiko Stuebner <heiko@sntech.de>
To: linus.walleij@linaro.org, bgolaszewski@baylibre.com
Cc: heiko@sntech.de, jay.xu@rock-chips.com,
	linux-gpio@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org
Subject: [PATCH 1/4] gpio/rockchip: extended debounce support is only available on v2
Date: Tue, 14 Sep 2021 00:49:23 +0200	[thread overview]
Message-ID: <20210913224926.1260726-2-heiko@sntech.de> (raw)
In-Reply-To: <20210913224926.1260726-1-heiko@sntech.de>

The gpio driver runs into issues on v1 gpio blocks, as the db_clk
and the whole extended debounce support is only ever defined on v2.
So checking for the IS_ERR on the db_clk is not enough, as it will
be NULL on v1.

Fix this by adding the needed condition for v2 first before checking
the existence of the db_clk.

This caused my rk3288-veyron-pinky to enter a reboot loop when it
tried to enable the power-key as adc-key device.

Fixes: 3bcbd1a85b68 ("gpio/rockchip: support next version gpio controller")
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
---
 drivers/gpio/gpio-rockchip.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpio/gpio-rockchip.c b/drivers/gpio/gpio-rockchip.c
index 036b2d959503..16d9bf7188e3 100644
--- a/drivers/gpio/gpio-rockchip.c
+++ b/drivers/gpio/gpio-rockchip.c
@@ -195,7 +195,7 @@ static int rockchip_gpio_set_debounce(struct gpio_chip *gc,
 	unsigned int cur_div_reg;
 	u64 div;
 
-	if (!IS_ERR(bank->db_clk)) {
+	if (bank->gpio_type == GPIO_TYPE_V2 && !IS_ERR(bank->db_clk)) {
 		div_debounce_support = true;
 		freq = clk_get_rate(bank->db_clk);
 		max_debounce = (GENMASK(23, 0) + 1) * 2 * 1000000 / freq;
-- 
2.29.2


_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip

WARNING: multiple messages have this Message-ID (diff)
From: Heiko Stuebner <heiko@sntech.de>
To: linus.walleij@linaro.org, bgolaszewski@baylibre.com
Cc: heiko@sntech.de, jay.xu@rock-chips.com,
	linux-gpio@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org
Subject: [PATCH 1/4] gpio/rockchip: extended debounce support is only available on v2
Date: Tue, 14 Sep 2021 00:49:23 +0200	[thread overview]
Message-ID: <20210913224926.1260726-2-heiko@sntech.de> (raw)
In-Reply-To: <20210913224926.1260726-1-heiko@sntech.de>

The gpio driver runs into issues on v1 gpio blocks, as the db_clk
and the whole extended debounce support is only ever defined on v2.
So checking for the IS_ERR on the db_clk is not enough, as it will
be NULL on v1.

Fix this by adding the needed condition for v2 first before checking
the existence of the db_clk.

This caused my rk3288-veyron-pinky to enter a reboot loop when it
tried to enable the power-key as adc-key device.

Fixes: 3bcbd1a85b68 ("gpio/rockchip: support next version gpio controller")
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
---
 drivers/gpio/gpio-rockchip.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpio/gpio-rockchip.c b/drivers/gpio/gpio-rockchip.c
index 036b2d959503..16d9bf7188e3 100644
--- a/drivers/gpio/gpio-rockchip.c
+++ b/drivers/gpio/gpio-rockchip.c
@@ -195,7 +195,7 @@ static int rockchip_gpio_set_debounce(struct gpio_chip *gc,
 	unsigned int cur_div_reg;
 	u64 div;
 
-	if (!IS_ERR(bank->db_clk)) {
+	if (bank->gpio_type == GPIO_TYPE_V2 && !IS_ERR(bank->db_clk)) {
 		div_debounce_support = true;
 		freq = clk_get_rate(bank->db_clk);
 		max_debounce = (GENMASK(23, 0) + 1) * 2 * 1000000 / freq;
-- 
2.29.2


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

WARNING: multiple messages have this Message-ID (diff)
From: Heiko Stuebner <heiko@sntech.de>
To: linus.walleij@linaro.org, bgolaszewski@baylibre.com
Cc: heiko@sntech.de, jay.xu@rock-chips.com,
	linux-gpio@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org
Subject: [PATCH 1/4] gpio/rockchip: extended debounce support is only available on v2
Date: Tue, 14 Sep 2021 00:49:23 +0200	[thread overview]
Message-ID: <20210913224926.1260726-2-heiko@sntech.de> (raw)
In-Reply-To: <20210913224926.1260726-1-heiko@sntech.de>

The gpio driver runs into issues on v1 gpio blocks, as the db_clk
and the whole extended debounce support is only ever defined on v2.
So checking for the IS_ERR on the db_clk is not enough, as it will
be NULL on v1.

Fix this by adding the needed condition for v2 first before checking
the existence of the db_clk.

This caused my rk3288-veyron-pinky to enter a reboot loop when it
tried to enable the power-key as adc-key device.

Fixes: 3bcbd1a85b68 ("gpio/rockchip: support next version gpio controller")
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
---
 drivers/gpio/gpio-rockchip.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpio/gpio-rockchip.c b/drivers/gpio/gpio-rockchip.c
index 036b2d959503..16d9bf7188e3 100644
--- a/drivers/gpio/gpio-rockchip.c
+++ b/drivers/gpio/gpio-rockchip.c
@@ -195,7 +195,7 @@ static int rockchip_gpio_set_debounce(struct gpio_chip *gc,
 	unsigned int cur_div_reg;
 	u64 div;
 
-	if (!IS_ERR(bank->db_clk)) {
+	if (bank->gpio_type == GPIO_TYPE_V2 && !IS_ERR(bank->db_clk)) {
 		div_debounce_support = true;
 		freq = clk_get_rate(bank->db_clk);
 		max_debounce = (GENMASK(23, 0) + 1) * 2 * 1000000 / freq;
-- 
2.29.2


  reply	other threads:[~2021-09-13 22:50 UTC|newest]

Thread overview: 39+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-13 22:49 [PATCH 0/4] gpio/pinctrl-rockchip: Fixes for the recently separated gpio/pinctrl driver Heiko Stuebner
2021-09-13 22:49 ` Heiko Stuebner
2021-09-13 22:49 ` Heiko Stuebner
2021-09-13 22:49 ` Heiko Stuebner [this message]
2021-09-13 22:49   ` [PATCH 1/4] gpio/rockchip: extended debounce support is only available on v2 Heiko Stuebner
2021-09-13 22:49   ` Heiko Stuebner
2021-09-17 22:34   ` Linus Walleij
2021-09-17 22:34     ` Linus Walleij
2021-09-17 22:34     ` Linus Walleij
2021-09-22  9:45   ` Bartosz Golaszewski
2021-09-22  9:45     ` Bartosz Golaszewski
2021-09-22  9:45     ` Bartosz Golaszewski
2021-09-13 22:49 ` [PATCH 2/4] gpio/rockchip: fix get_direction value handling Heiko Stuebner
2021-09-13 22:49   ` Heiko Stuebner
2021-09-13 22:49   ` Heiko Stuebner
2021-09-17 23:30   ` Linus Walleij
2021-09-17 23:30     ` Linus Walleij
2021-09-17 23:30     ` Linus Walleij
2021-09-22  9:46   ` Bartosz Golaszewski
2021-09-22  9:46     ` Bartosz Golaszewski
2021-09-22  9:46     ` Bartosz Golaszewski
2021-09-13 22:49 ` [PATCH 3/4] pinctrl/rockchip: add a queue for deferred pin output settings on probe Heiko Stuebner
2021-09-13 22:49   ` Heiko Stuebner
2021-09-13 22:49   ` Heiko Stuebner
2021-09-17 23:35   ` Linus Walleij
2021-09-17 23:35     ` Linus Walleij
2021-09-17 23:35     ` Linus Walleij
2021-09-13 22:49 ` [PATCH 4/4] gpio/rockchip: fetch deferred " Heiko Stuebner
2021-09-13 22:49   ` Heiko Stuebner
2021-09-13 22:49   ` Heiko Stuebner
2021-09-17 23:38   ` Linus Walleij
2021-09-17 23:38     ` Linus Walleij
2021-09-17 23:38     ` Linus Walleij
2021-09-18  0:00     ` Heiko Stübner
2021-09-18  0:00       ` Heiko Stübner
2021-09-18  0:00       ` Heiko Stübner
2021-09-19 14:47       ` Linus Walleij
2021-09-19 14:47         ` Linus Walleij
2021-09-19 14:47         ` Linus Walleij

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