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display : hdmi: fix hibernation

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When echo disk > /sys/power/state , do reset
the hdmi will fail to show the console log.
it is caused by a reset used share way to get
and it will fail to set the reset hardware

fix this by use reset_control_get_exclusive

Signed-off-by: Keith Zhao <keith.zhao@starfivetech.com>
This commit is contained in:
Keith Zhao 2023-08-18 17:32:48 +08:00 • committed by Justin Hammond
parent 572737cbc6
commit 9d2b3f0773
1 changed files with 4 additions and 3 deletions
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7
drivers/gpu/drm/verisilicon/vs_dc.c
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@ -411,7 +411,7 @@ static int vs_dc_dc8200_get_clock(struct device *dev, struct vs_dc *dc)
return 0;
}
static int vs_dc_dc8200_clock_enable(struct device *dev, struct vs_dc *dc)
static int vs_dc_dc8200_clock_enable(struct device *dev, struct vs_dc *dc)
{
int ret;
/*clk_prepare_enable(dc->sys_clk);*/
@ -459,7 +459,7 @@ static void vs_vout_reset_get(struct device *dev, struct vs_dc *dc)
dc->rst_vout_src = reset_control_get_shared(dev, "rst_vout_src");
if (IS_ERR(dc->rst_vout_src))
dev_err(dev, "failed to get rst_vout_src\n");
dc->noc_disp = reset_control_get_shared(dev, "rst_noc_disp");
dc->noc_disp = reset_control_get_exclusive(dev, "rst_noc_disp");
if (IS_ERR(dc->noc_disp))
dev_err(dev, "failed to get rst_noc_disp\n");
}
@ -467,7 +467,7 @@ static void vs_vout_reset_get(struct device *dev, struct vs_dc *dc)
static void vs_vout_reset_deassert(struct vs_dc *dc)
{
reset_control_deassert(dc->rst_vout_src);//no!
reset_control_deassert(dc->noc_disp);//ok
//reset_control_deassert(dc->noc_disp);//ok
}
/*
@ -536,6 +536,7 @@ static int dc_vout_clk_enable(struct device *dev, struct vs_dc *dc)
dev_err(dev, "failed to enable clock\n");
return ret;
}
reset_control_deassert(dc->noc_disp);
ret = vs_dc_vouttop_clock_enable(dev, dc);
if (ret) {