[PATCH] Revert "thermal: rockchip: fix up the tsadc pinctrl setting error"

From: Heiko Stuebner
Date: Wed May 22 2019 - 10:15:33 EST


This reverts commit 28694e009e512451ead5519dd801f9869acb1f60.

The commit causes multiple issues in that:
- the added call to ->control does potentially run unclocked
causing a hang of the machine
- the added pinctrl-states are undocumented in the binding
- the added pinctrl-states are not backwards compatible, breaking
old devicetrees.

Fixes: 28694e009e51 ("thermal: rockchip: fix up the tsadc pinctrl setting error")
Signed-off-by: Heiko Stuebner <heiko@xxxxxxxxx>
---
drivers/thermal/rockchip_thermal.c | 36 +++---------------------------
1 file changed, 3 insertions(+), 33 deletions(-)

diff --git a/drivers/thermal/rockchip_thermal.c b/drivers/thermal/rockchip_thermal.c
index bda1ca199abd..7ef9c7efe950 100644
--- a/drivers/thermal/rockchip_thermal.c
+++ b/drivers/thermal/rockchip_thermal.c
@@ -172,9 +172,6 @@ struct rockchip_thermal_data {
int tshut_temp;
enum tshut_mode tshut_mode;
enum tshut_polarity tshut_polarity;
- struct pinctrl *pinctrl;
- struct pinctrl_state *gpio_state;
- struct pinctrl_state *otp_state;
};

/**
@@ -1283,8 +1280,6 @@ static int rockchip_thermal_probe(struct platform_device *pdev)
return error;
}

- thermal->chip->control(thermal->regs, false);
-
error = clk_prepare_enable(thermal->clk);
if (error) {
dev_err(&pdev->dev, "failed to enable converter clock: %d\n",
@@ -1310,30 +1305,6 @@ static int rockchip_thermal_probe(struct platform_device *pdev)
thermal->chip->initialize(thermal->grf, thermal->regs,
thermal->tshut_polarity);

- if (thermal->tshut_mode == TSHUT_MODE_GPIO) {
- thermal->pinctrl = devm_pinctrl_get(&pdev->dev);
- if (IS_ERR(thermal->pinctrl)) {
- dev_err(&pdev->dev, "failed to find thermal pinctrl\n");
- return PTR_ERR(thermal->pinctrl);
- }
-
- thermal->gpio_state = pinctrl_lookup_state(thermal->pinctrl,
- "gpio");
- if (IS_ERR_OR_NULL(thermal->gpio_state)) {
- dev_err(&pdev->dev, "failed to find thermal gpio state\n");
- return -EINVAL;
- }
-
- thermal->otp_state = pinctrl_lookup_state(thermal->pinctrl,
- "otpout");
- if (IS_ERR_OR_NULL(thermal->otp_state)) {
- dev_err(&pdev->dev, "failed to find thermal otpout state\n");
- return -EINVAL;
- }
-
- pinctrl_select_state(thermal->pinctrl, thermal->otp_state);
- }
-
for (i = 0; i < thermal->chip->chn_num; i++) {
error = rockchip_thermal_register_sensor(pdev, thermal,
&thermal->sensors[i],
@@ -1404,8 +1375,8 @@ static int __maybe_unused rockchip_thermal_suspend(struct device *dev)

clk_disable(thermal->pclk);
clk_disable(thermal->clk);
- if (thermal->tshut_mode == TSHUT_MODE_GPIO)
- pinctrl_select_state(thermal->pinctrl, thermal->gpio_state);
+
+ pinctrl_pm_select_sleep_state(dev);

return 0;
}
@@ -1450,8 +1421,7 @@ static int __maybe_unused rockchip_thermal_resume(struct device *dev)
for (i = 0; i < thermal->chip->chn_num; i++)
rockchip_thermal_toggle_sensor(&thermal->sensors[i], true);

- if (thermal->tshut_mode == TSHUT_MODE_GPIO)
- pinctrl_select_state(thermal->pinctrl, thermal->otp_state);
+ pinctrl_pm_select_default_state(dev);

return 0;
}
--
2.20.1