From: Jernej Skrabec jernej.skrabec@gmail.com
[ Upstream commit cff104e33bad38f4b2c8d58816a7accfaa2879f9 ]
According to user manual, reset line should be deasserted before clocks are enabled. Also fix power down sequence to be reverse of that.
Fixes: a4260ea49547 ("media: sun4i: Add H3 deinterlace driver") Signed-off-by: Jernej Skrabec jernej.skrabec@gmail.com Signed-off-by: Hans Verkuil hverkuil-cisco@xs4all.nl Signed-off-by: Sasha Levin sashal@kernel.org --- .../media/platform/sunxi/sun8i-di/sun8i-di.c | 25 ++++++++++--------- 1 file changed, 13 insertions(+), 12 deletions(-)
diff --git a/drivers/media/platform/sunxi/sun8i-di/sun8i-di.c b/drivers/media/platform/sunxi/sun8i-di/sun8i-di.c index 073a61c094183..8faf93c418ed5 100644 --- a/drivers/media/platform/sunxi/sun8i-di/sun8i-di.c +++ b/drivers/media/platform/sunxi/sun8i-di/sun8i-di.c @@ -933,11 +933,18 @@ static int deinterlace_runtime_resume(struct device *device) return ret; }
+ ret = reset_control_deassert(dev->rstc); + if (ret) { + dev_err(dev->dev, "Failed to apply reset\n"); + + goto err_exclusive_rate; + } + ret = clk_prepare_enable(dev->bus_clk); if (ret) { dev_err(dev->dev, "Failed to enable bus clock\n");
- goto err_exclusive_rate; + goto err_rst; }
ret = clk_prepare_enable(dev->mod_clk); @@ -954,23 +961,16 @@ static int deinterlace_runtime_resume(struct device *device) goto err_mod_clk; }
- ret = reset_control_deassert(dev->rstc); - if (ret) { - dev_err(dev->dev, "Failed to apply reset\n"); - - goto err_ram_clk; - } - deinterlace_init(dev);
return 0;
-err_ram_clk: - clk_disable_unprepare(dev->ram_clk); err_mod_clk: clk_disable_unprepare(dev->mod_clk); err_bus_clk: clk_disable_unprepare(dev->bus_clk); +err_rst: + reset_control_assert(dev->rstc); err_exclusive_rate: clk_rate_exclusive_put(dev->mod_clk);
@@ -981,11 +981,12 @@ static int deinterlace_runtime_suspend(struct device *device) { struct deinterlace_dev *dev = dev_get_drvdata(device);
- reset_control_assert(dev->rstc); - clk_disable_unprepare(dev->ram_clk); clk_disable_unprepare(dev->mod_clk); clk_disable_unprepare(dev->bus_clk); + + reset_control_assert(dev->rstc); + clk_rate_exclusive_put(dev->mod_clk);
return 0;