diff options
Diffstat (limited to 'drivers/gpu/drm/tegra/sor.c')
| -rw-r--r-- | drivers/gpu/drm/tegra/sor.c | 57 |
1 files changed, 35 insertions, 22 deletions
diff --git a/drivers/gpu/drm/tegra/sor.c b/drivers/gpu/drm/tegra/sor.c index b652201eadad..cb7e06062174 100644 --- a/drivers/gpu/drm/tegra/sor.c +++ b/drivers/gpu/drm/tegra/sor.c @@ -2350,10 +2350,13 @@ static int tegra_sor_init(struct host1x_client *client) * XXX: Remove this reset once proper hand-over from firmware to * kernel is possible. */ - err = reset_control_assert(sor->rst); - if (err < 0) { - dev_err(sor->dev, "failed to assert SOR reset: %d\n", err); - return err; + if (sor->rst) { + err = reset_control_assert(sor->rst); + if (err < 0) { + dev_err(sor->dev, "failed to assert SOR reset: %d\n", + err); + return err; + } } err = clk_prepare_enable(sor->clk); @@ -2364,10 +2367,13 @@ static int tegra_sor_init(struct host1x_client *client) usleep_range(1000, 3000); - err = reset_control_deassert(sor->rst); - if (err < 0) { - dev_err(sor->dev, "failed to deassert SOR reset: %d\n", err); - return err; + if (sor->rst) { + err = reset_control_deassert(sor->rst); + if (err < 0) { + dev_err(sor->dev, "failed to deassert SOR reset: %d\n", + err); + return err; + } } err = clk_prepare_enable(sor->clk_safe); @@ -2601,11 +2607,14 @@ static int tegra_sor_probe(struct platform_device *pdev) goto remove; } - sor->rst = devm_reset_control_get(&pdev->dev, "sor"); - if (IS_ERR(sor->rst)) { - err = PTR_ERR(sor->rst); - dev_err(&pdev->dev, "failed to get reset control: %d\n", err); - goto remove; + if (!pdev->dev.pm_domain) { + sor->rst = devm_reset_control_get(&pdev->dev, "sor"); + if (IS_ERR(sor->rst)) { + err = PTR_ERR(sor->rst); + dev_err(&pdev->dev, "failed to get reset control: %d\n", + err); + goto remove; + } } sor->clk = devm_clk_get(&pdev->dev, NULL); @@ -2711,10 +2720,12 @@ static int tegra_sor_suspend(struct device *dev) struct tegra_sor *sor = dev_get_drvdata(dev); int err; - err = reset_control_assert(sor->rst); - if (err < 0) { - dev_err(dev, "failed to assert reset: %d\n", err); - return err; + if (sor->rst) { + err = reset_control_assert(sor->rst); + if (err < 0) { + dev_err(dev, "failed to assert reset: %d\n", err); + return err; + } } usleep_range(1000, 2000); @@ -2737,11 +2748,13 @@ static int tegra_sor_resume(struct device *dev) usleep_range(1000, 2000); - err = reset_control_deassert(sor->rst); - if (err < 0) { - dev_err(dev, "failed to deassert reset: %d\n", err); - clk_disable_unprepare(sor->clk); - return err; + if (sor->rst) { + err = reset_control_deassert(sor->rst); + if (err < 0) { + dev_err(dev, "failed to deassert reset: %d\n", err); + clk_disable_unprepare(sor->clk); + return err; + } } return 0; |