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Commit d06e7f8f authored by Thierry Reding's avatar Thierry Reding
Browse files

drm/tegra: hdmi - Clean up clock usage 



Clocks are never enabled or disabled in atomic context, so we can use
the clk_prepare_enable() and clk_disable_unprepare() helpers instead.

Signed-off-by: default avatarThierry Reding <treding@nvidia.com>
parent 88685687

drivers/gpu/drm/tegra/hdmi.c

+6 −14
Original line number Diff line number Diff line
@@ -727,7 +727,7 @@ static int tegra_output_hdmi_enable(struct tegra_output *output) 
	if (err < 0)

		return err;



	err = clk_enable(hdmi->clk);

	err = clk_prepare_enable(hdmi->clk);

	if (err < 0) {

		dev_err(hdmi->dev, "failed to enable clock: %d\n", err);

		return err;
@@ -944,8 +944,8 @@ static int tegra_output_hdmi_disable(struct tegra_output *output) 
		tegra_dc_writel(dc, GENERAL_ACT_REQ, DC_CMD_STATE_CONTROL);

	}



	clk_disable_unprepare(hdmi->clk);

	reset_control_assert(hdmi->rst);

	clk_disable(hdmi->clk);

	regulator_disable(hdmi->vdd);

	regulator_disable(hdmi->pll);
@@ -1015,7 +1015,7 @@ static int tegra_hdmi_show_regs(struct seq_file *s, void *data) 
	struct tegra_hdmi *hdmi = node->info_ent->data;

	int err;



	err = clk_enable(hdmi->clk);

	err = clk_prepare_enable(hdmi->clk);

	if (err)

		return err;
@@ -1184,7 +1184,7 @@ static int tegra_hdmi_show_regs(struct seq_file *s, void *data) 


#undef DUMP_REG



	clk_disable(hdmi->clk);

	clk_disable_unprepare(hdmi->clk);



	return 0;

}
@@ -1379,18 +1379,10 @@ static int tegra_hdmi_probe(struct platform_device *pdev) 
		return PTR_ERR(hdmi->rst);

	}



	err = clk_prepare(hdmi->clk);

	if (err < 0)

		return err;



	hdmi->clk_parent = devm_clk_get(&pdev->dev, "parent");

	if (IS_ERR(hdmi->clk_parent))

		return PTR_ERR(hdmi->clk_parent);



	err = clk_prepare(hdmi->clk_parent);

	if (err < 0)

		return err;



	err = clk_set_parent(hdmi->clk, hdmi->clk_parent);

	if (err < 0) {

		dev_err(&pdev->dev, "failed to setup clocks: %d\n", err);
@@ -1466,8 +1458,8 @@ static int tegra_hdmi_remove(struct platform_device *pdev) 
		return err;

	}



	clk_unprepare(hdmi->clk_parent);

	clk_unprepare(hdmi->clk);

	clk_disable_unprepare(hdmi->clk_parent);

	clk_disable_unprepare(hdmi->clk);



	return 0;

}