drm/msm/mdp4: only use lut_clk on mdp4.2+ (eb2b47bb) · Commits · 戴 / test

drivers/gpu/drm/msm/disp/mdp4/mdp4_kms.c

+13 −9

Original line number	Diff line number	Diff line
		@@ -206,6 +206,7 @@ int mdp4_disable(struct mdp4_kms *mdp4_kms)
		clk_disable_unprepare(mdp4_kms->clk);
		if (mdp4_kms->pclk)
		clk_disable_unprepare(mdp4_kms->pclk);
		if (mdp4_kms->lut_clk)
		clk_disable_unprepare(mdp4_kms->lut_clk);
		if (mdp4_kms->axi_clk)
		clk_disable_unprepare(mdp4_kms->axi_clk);
		@@ -220,6 +221,7 @@ int mdp4_enable(struct mdp4_kms *mdp4_kms)
		clk_prepare_enable(mdp4_kms->clk);
		if (mdp4_kms->pclk)
		clk_prepare_enable(mdp4_kms->pclk);
		if (mdp4_kms->lut_clk)
		clk_prepare_enable(mdp4_kms->lut_clk);
		if (mdp4_kms->axi_clk)
		clk_prepare_enable(mdp4_kms->axi_clk);
		@@ -472,13 +474,14 @@ struct msm_kms mdp4_kms_init(struct drm_device dev)
		if (IS_ERR(mdp4_kms->pclk))
		mdp4_kms->pclk = NULL;

		// XXX if (rev >= MDP_REV_42) { ???
		if (mdp4_kms->rev >= 2) {
		mdp4_kms->lut_clk = devm_clk_get(&pdev->dev, "lut_clk");
		if (IS_ERR(mdp4_kms->lut_clk)) {
		DRM_DEV_ERROR(dev->dev, "failed to get lut_clk\n");
		ret = PTR_ERR(mdp4_kms->lut_clk);
		goto fail;
		}
		}

		mdp4_kms->axi_clk = devm_clk_get(&pdev->dev, "bus_clk");
		if (IS_ERR(mdp4_kms->axi_clk)) {
		@@ -488,6 +491,7 @@ struct msm_kms mdp4_kms_init(struct drm_device dev)
		}

		clk_set_rate(mdp4_kms->clk, config->max_clk);
		if (mdp4_kms->lut_clk)
		clk_set_rate(mdp4_kms->lut_clk, config->max_clk);

		pm_runtime_enable(dev->dev);