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| author | Jernej Skrabec <jernej.skrabec@gmail.com> | 2023-09-11 20:46:12 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-11-20 11:59:32 +0100 |
| commit | c88a8a09c06510e67e5ad870e6cb71e5fbd80662 (patch) | |
| tree | 1ffecf8ca6720764992d65328950aa5830bb1a63 /drivers/staging | |
| parent | aae7598aff291d4d140be1355aa20930af948785 (diff) | |
| download | linux-c88a8a09c06510e67e5ad870e6cb71e5fbd80662.tar.gz linux-c88a8a09c06510e67e5ad870e6cb71e5fbd80662.tar.bz2 linux-c88a8a09c06510e67e5ad870e6cb71e5fbd80662.zip | |
media: cedrus: Fix clock/reset sequence
[ Upstream commit 36fe515c1a3cd5eac148e8a591a82108d92d5522 ]
According to H6 user manual, resets should always be de-asserted before
clocks are enabled. This is also consistent with vendor driver.
Fixes: d5aecd289bab ("media: cedrus: Implement runtime PM")
Signed-off-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Acked-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/staging')
| -rw-r--r-- | drivers/staging/media/sunxi/cedrus/cedrus_hw.c | 24 |
1 files changed, 12 insertions, 12 deletions
diff --git a/drivers/staging/media/sunxi/cedrus/cedrus_hw.c b/drivers/staging/media/sunxi/cedrus/cedrus_hw.c index b696bf884cbd..32af0e96e762 100644 --- a/drivers/staging/media/sunxi/cedrus/cedrus_hw.c +++ b/drivers/staging/media/sunxi/cedrus/cedrus_hw.c @@ -172,12 +172,12 @@ int cedrus_hw_suspend(struct device *device) { struct cedrus_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->ahb_clk); + reset_control_assert(dev->rstc); + return 0; } @@ -186,11 +186,18 @@ int cedrus_hw_resume(struct device *device) struct cedrus_dev *dev = dev_get_drvdata(device); int ret; + ret = reset_control_reset(dev->rstc); + if (ret) { + dev_err(dev->dev, "Failed to apply reset\n"); + + return ret; + } + ret = clk_prepare_enable(dev->ahb_clk); if (ret) { dev_err(dev->dev, "Failed to enable AHB clock\n"); - return ret; + goto err_rst; } ret = clk_prepare_enable(dev->mod_clk); @@ -207,21 +214,14 @@ int cedrus_hw_resume(struct device *device) goto err_mod_clk; } - ret = reset_control_reset(dev->rstc); - if (ret) { - dev_err(dev->dev, "Failed to apply reset\n"); - - goto err_ram_clk; - } - return 0; -err_ram_clk: - clk_disable_unprepare(dev->ram_clk); err_mod_clk: clk_disable_unprepare(dev->mod_clk); err_ahb_clk: clk_disable_unprepare(dev->ahb_clk); +err_rst: + reset_control_assert(dev->rstc); return ret; } |