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video: rockchip: Ensure that set voltage when update devfreq for the first time

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Sometimes the regulator is shared between several devices, if target rate
and target voltage are equal to initial rate and iniital voltage , the
min_uV and max_uV of regulator will be always equal to zero, other devices
may set a low voltage.

Change-Id: I561971844296ffcada823d741710aba808167e3f
Signed-off-by: Finley Xiao <finley.xiao@rock-chips.com>
This commit is contained in:
Finley Xiao
2018-05-08 09:11:34 +08:00
committed by Tao Huang
parent 5d88f40f5a
commit 716dd4d54e
1 changed files with 5 additions and 3 deletions
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8
drivers/video/rockchip/vcodec/vcodec_service.c
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@@ -3104,10 +3104,13 @@ static int devfreq_vcodec_target(struct device *dev, unsigned long *freq,
return ret;
ret = regulator_set_voltage(pservice->vdd_vcodec, target_volt,
INT_MAX);
if (ret)
if (ret) {
dev_err(dev, "Cannot set voltage %lu uV\n",
target_volt);
return ret;
return ret;
}
pservice->volt = target_volt;
return 0;
}
if (old_clk_rate < target_rate) {
@@ -3406,7 +3409,6 @@ static int vcodec_probe(struct platform_device *pdev)
stat = &pservice->devfreq->last_status;
stat->current_frequency = clk_get_rate(pservice->aclk_vcodec);
pservice->volt = regulator_get_voltage(pservice->vdd_vcodec);
ret = devfreq_register_opp_notifier(dev, pservice->devfreq);
if (ret)