drm/msm/dsi: convert to msm_clk_get()

We already have, as a result of upstreaming the gpu bindings,
msm_clk_get() which will try to get the clock both without and with a
"_clk" suffix.  Use this in DSI code so we can drop the "_clk" suffix
in bindings while maintaing backwards compatibility.

Signed-off-by: Rob Clark <robdclark@gmail.com>
Reviewed-by: Sean Paul <seanpaul@chromium.org>

drivers/gpu/drm/msm/dsi/dsi_cfg.c

@@ -14,7 +14,7 @@
 #include "dsi_cfg.h"
 
 static const char * const dsi_v2_bus_clk_names[] = {
-	"core_mmss_clk", "iface_clk", "bus_clk",
+	"core_mmss", "iface", "bus",
 };
 
 static const struct msm_dsi_config apq8064_dsi_cfg = {
@@ -34,7 +34,7 @@ static const struct msm_dsi_config apq8064_dsi_cfg = {
 };
 
 static const char * const dsi_6g_bus_clk_names[] = {
-	"mdp_core_clk", "iface_clk", "bus_clk", "core_mmss_clk",
+	"mdp_core", "iface", "bus", "core_mmss",
 };
 
 static const struct msm_dsi_config msm8974_apq8084_dsi_cfg = {
@@ -55,7 +55,7 @@ static const struct msm_dsi_config msm8974_apq8084_dsi_cfg = {
 };
 
 static const char * const dsi_8916_bus_clk_names[] = {
-	"mdp_core_clk", "iface_clk", "bus_clk",
+	"mdp_core", "iface", "bus",
 };
 
 static const struct msm_dsi_config msm8916_dsi_cfg = {
@@ -99,7 +99,7 @@ static const struct msm_dsi_config msm8994_dsi_cfg = {
  * without it too. Figure out why it doesn't enable and uncomment below
  */
 static const char * const dsi_8996_bus_clk_names[] = {
-	"mdp_core_clk", "iface_clk", "bus_clk", /* "core_mmss_clk", */
+	"mdp_core", "iface", "bus", /* "core_mmss", */
 };
 
 static const struct msm_dsi_config msm8996_dsi_cfg = {

drivers/gpu/drm/msm/dsi/dsi_host.c

@@ -334,46 +334,46 @@ static int dsi_regulator_init(struct msm_dsi_host *msm_host)
 
 static int dsi_clk_init(struct msm_dsi_host *msm_host)
 {
-	struct device *dev = &msm_host->pdev->dev;
+	struct platform_device *pdev = msm_host->pdev;
 	const struct msm_dsi_cfg_handler *cfg_hnd = msm_host->cfg_hnd;
 	const struct msm_dsi_config *cfg = cfg_hnd->cfg;
 	int i, ret = 0;
 
 	/* get bus clocks */
 	for (i = 0; i < cfg->num_bus_clks; i++) {
-		msm_host->bus_clks[i] = devm_clk_get(dev,
+		msm_host->bus_clks[i] = msm_clk_get(pdev,
 						cfg->bus_clk_names[i]);
 		if (IS_ERR(msm_host->bus_clks[i])) {
 			ret = PTR_ERR(msm_host->bus_clks[i]);
-			pr_err("%s: Unable to get %s, ret = %d\n",
+			pr_err("%s: Unable to get %s clock, ret = %d\n",
 				__func__, cfg->bus_clk_names[i], ret);
 			goto exit;
 		}
 	}
 
 	/* get link and source clocks */
-	msm_host->byte_clk = devm_clk_get(dev, "byte_clk");
+	msm_host->byte_clk = msm_clk_get(pdev, "byte");
 	if (IS_ERR(msm_host->byte_clk)) {
 		ret = PTR_ERR(msm_host->byte_clk);
-		pr_err("%s: can't find dsi_byte_clk. ret=%d\n",
+		pr_err("%s: can't find dsi_byte clock. ret=%d\n",
 			__func__, ret);
 		msm_host->byte_clk = NULL;
 		goto exit;
 	}
 
-	msm_host->pixel_clk = devm_clk_get(dev, "pixel_clk");
+	msm_host->pixel_clk = msm_clk_get(pdev, "pixel");
 	if (IS_ERR(msm_host->pixel_clk)) {
 		ret = PTR_ERR(msm_host->pixel_clk);
-		pr_err("%s: can't find dsi_pixel_clk. ret=%d\n",
+		pr_err("%s: can't find dsi_pixel clock. ret=%d\n",
 			__func__, ret);
 		msm_host->pixel_clk = NULL;
 		goto exit;
 	}
 
-	msm_host->esc_clk = devm_clk_get(dev, "core_clk");
+	msm_host->esc_clk = msm_clk_get(pdev, "core");
 	if (IS_ERR(msm_host->esc_clk)) {
 		ret = PTR_ERR(msm_host->esc_clk);
-		pr_err("%s: can't find dsi_esc_clk. ret=%d\n",
+		pr_err("%s: can't find dsi_esc clock. ret=%d\n",
 			__func__, ret);
 		msm_host->esc_clk = NULL;
 		goto exit;
@@ -382,22 +382,22 @@ static int dsi_clk_init(struct msm_dsi_host *msm_host)
 	msm_host->byte_clk_src = clk_get_parent(msm_host->byte_clk);
 	if (!msm_host->byte_clk_src) {
 		ret = -ENODEV;
-		pr_err("%s: can't find byte_clk_src. ret=%d\n", __func__, ret);
+		pr_err("%s: can't find byte_clk clock. ret=%d\n", __func__, ret);
 		goto exit;
 	}
 
 	msm_host->pixel_clk_src = clk_get_parent(msm_host->pixel_clk);
 	if (!msm_host->pixel_clk_src) {
 		ret = -ENODEV;
-		pr_err("%s: can't find pixel_clk_src. ret=%d\n", __func__, ret);
+		pr_err("%s: can't find pixel_clk clock. ret=%d\n", __func__, ret);
 		goto exit;
 	}
 
 	if (cfg_hnd->major == MSM_DSI_VER_MAJOR_V2) {
-		msm_host->src_clk = devm_clk_get(dev, "src_clk");
+		msm_host->src_clk = msm_clk_get(pdev, "src");
 		if (IS_ERR(msm_host->src_clk)) {
 			ret = PTR_ERR(msm_host->src_clk);
-			pr_err("%s: can't find dsi_src_clk. ret=%d\n",
+			pr_err("%s: can't find src clock. ret=%d\n",
 				__func__, ret);
 			msm_host->src_clk = NULL;
 			goto exit;
@@ -406,7 +406,7 @@ static int dsi_clk_init(struct msm_dsi_host *msm_host)
 		msm_host->esc_clk_src = clk_get_parent(msm_host->esc_clk);
 		if (!msm_host->esc_clk_src) {
 			ret = -ENODEV;
-			pr_err("%s: can't get esc_clk_src. ret=%d\n",
+			pr_err("%s: can't get esc clock parent. ret=%d\n",
 				__func__, ret);
 			goto exit;
 		}
@@ -414,7 +414,7 @@ static int dsi_clk_init(struct msm_dsi_host *msm_host)
 		msm_host->dsi_clk_src = clk_get_parent(msm_host->src_clk);
 		if (!msm_host->dsi_clk_src) {
 			ret = -ENODEV;
-			pr_err("%s: can't get dsi_clk_src. ret=%d\n",
+			pr_err("%s: can't get src clock parent. ret=%d\n",
 				__func__, ret);
 		}
 	}

drivers/gpu/drm/msm/dsi/phy/dsi_phy.c

@@ -482,7 +482,7 @@ static int dsi_phy_driver_probe(struct platform_device *pdev)
 		goto fail;
 	}
 
-	phy->ahb_clk = devm_clk_get(dev, "iface_clk");
+	phy->ahb_clk = msm_clk_get(pdev, "iface");
 	if (IS_ERR(phy->ahb_clk)) {
 		dev_err(dev, "%s: Unable to get ahb clk\n", __func__);
 		ret = PTR_ERR(phy->ahb_clk);