soc: mediatek: mtk-svs: use svs get efuse common function

SVS might need to read both svs efuse and thermal efuse on the probe flow.
Therefore, add a common efuse read function to remove the superfluous
codes.

Signed-off-by: Roger Lu <roger.lu@mediatek.com>
Link: https://lore.kernel.org/r/20230202124104.16504-2-roger.lu@mediatek.com
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>

Author: mtk-rogerlu

drivers/soc/mediatek/mtk-svs.c

@@ -1729,26 +1729,28 @@ static int svs_bank_resource_setup(struct svs_platform *svsp)
 	return 0;
 }
 
-static int svs_thermal_efuse_get_data(struct svs_platform *svsp)
+static int svs_get_efuse_data(struct svs_platform *svsp,
+			      const char *nvmem_cell_name,
+			      u32 **svsp_efuse, size_t *svsp_efuse_max)
 {
 	struct nvmem_cell *cell;
 
-	/* Thermal efuse parsing */
-	cell = nvmem_cell_get(svsp->dev, "t-calibration-data");
+	cell = nvmem_cell_get(svsp->dev, nvmem_cell_name);
 	if (IS_ERR_OR_NULL(cell)) {
-		dev_err(svsp->dev, "no \"t-calibration-data\"? %ld\n", PTR_ERR(cell));
+		dev_err(svsp->dev, "no \"%s\"? %ld\n",
+			nvmem_cell_name, PTR_ERR(cell));
 		return PTR_ERR(cell);
 	}
 
-	svsp->tefuse = nvmem_cell_read(cell, &svsp->tefuse_max);
-	if (IS_ERR(svsp->tefuse)) {
-		dev_err(svsp->dev, "cannot read thermal efuse: %ld\n",
-			PTR_ERR(svsp->tefuse));
+	*svsp_efuse = nvmem_cell_read(cell, svsp_efuse_max);
+	if (IS_ERR(*svsp_efuse)) {
+		dev_err(svsp->dev, "cannot read \"%s\" efuse: %ld\n",
+			nvmem_cell_name, PTR_ERR(*svsp_efuse));
 		nvmem_cell_put(cell);
-		return PTR_ERR(svsp->tefuse);
+		return PTR_ERR(*svsp_efuse);
 	}
 
-	svsp->tefuse_max /= sizeof(u32);
+	*svsp_efuse_max /= sizeof(u32);
 	nvmem_cell_put(cell);
 
 	return 0;
@@ -1796,7 +1798,8 @@ static bool svs_mt8192_efuse_parsing(struct svs_platform *svsp)
 		svsb->vmax += svsb->dvt_fixed;
 	}
 
-	ret = svs_thermal_efuse_get_data(svsp);
+	ret = svs_get_efuse_data(svsp, "t-calibration-data",
+				 &svsp->tefuse, &svsp->tefuse_max);
 	if (ret)
 		return false;
 
@@ -1901,7 +1904,8 @@ static bool svs_mt8183_efuse_parsing(struct svs_platform *svsp)
 		}
 	}
 
-	ret = svs_thermal_efuse_get_data(svsp);
+	ret = svs_get_efuse_data(svsp, "t-calibration-data",
+				 &svsp->tefuse, &svsp->tefuse_max);
 	if (ret)
 		return false;
 
@@ -2003,32 +2007,6 @@ static bool svs_mt8183_efuse_parsing(struct svs_platform *svsp)
 	return true;
 }
 
-static bool svs_is_efuse_data_correct(struct svs_platform *svsp)
-{
-	struct nvmem_cell *cell;
-
-	/* Get svs efuse by nvmem */
-	cell = nvmem_cell_get(svsp->dev, "svs-calibration-data");
-	if (IS_ERR(cell)) {
-		dev_err(svsp->dev, "no \"svs-calibration-data\"? %ld\n",
-			PTR_ERR(cell));
-		return false;
-	}
-
-	svsp->efuse = nvmem_cell_read(cell, &svsp->efuse_max);
-	if (IS_ERR(svsp->efuse)) {
-		dev_err(svsp->dev, "cannot read svs efuse: %ld\n",
-			PTR_ERR(svsp->efuse));
-		nvmem_cell_put(cell);
-		return false;
-	}
-
-	svsp->efuse_max /= sizeof(u32);
-	nvmem_cell_put(cell);
-
-	return true;
-}
-
 static struct device *svs_get_subsys_device(struct svs_platform *svsp,
 					    const char *node_name)
 {
@@ -2364,42 +2342,43 @@ static int svs_probe(struct platform_device *pdev)
 	if (ret)
 		return ret;
 
-	if (!svs_is_efuse_data_correct(svsp)) {
-		dev_notice(svsp->dev, "efuse data isn't correct\n");
+	ret = svs_get_efuse_data(svsp, "svs-calibration-data",
+				 &svsp->efuse, &svsp->efuse_max);
+	if (ret) {
 		ret = -EPERM;
 		goto svs_probe_free_efuse;
 	}
 
 	if (!svsp_data->efuse_parsing(svsp)) {
 		dev_err(svsp->dev, "efuse data parsing failed\n");
 		ret = -EPERM;
-		goto svs_probe_free_resource;
+		goto svs_probe_free_tefuse;
 	}
 
 	ret = svs_bank_resource_setup(svsp);
 	if (ret) {
 		dev_err(svsp->dev, "svs bank resource setup fail: %d\n", ret);
-		goto svs_probe_free_resource;
+		goto svs_probe_free_tefuse;
 	}
 
 	svsp_irq = platform_get_irq(pdev, 0);
 	if (svsp_irq < 0) {
 		ret = svsp_irq;
-		goto svs_probe_free_resource;
+		goto svs_probe_free_tefuse;
 	}
 
 	svsp->main_clk = devm_clk_get(svsp->dev, "main");
 	if (IS_ERR(svsp->main_clk)) {
 		dev_err(svsp->dev, "failed to get clock: %ld\n",
 			PTR_ERR(svsp->main_clk));
 		ret = PTR_ERR(svsp->main_clk);
-		goto svs_probe_free_resource;
+		goto svs_probe_free_tefuse;
 	}
 
 	ret = clk_prepare_enable(svsp->main_clk);
 	if (ret) {
 		dev_err(svsp->dev, "cannot enable main clk: %d\n", ret);
-		goto svs_probe_free_resource;
+		goto svs_probe_free_tefuse;
 	}
 
 	svsp->base = of_iomap(svsp->dev->of_node, 0);
@@ -2439,7 +2418,7 @@ static int svs_probe(struct platform_device *pdev)
 svs_probe_clk_disable:
 	clk_disable_unprepare(svsp->main_clk);
 
-svs_probe_free_resource:
+svs_probe_free_tefuse:
 	if (!IS_ERR_OR_NULL(svsp->tefuse))
 		kfree(svsp->tefuse);