drm/msm: get rid of msm_iomap_size

Instead of looping throught the resources each time to get the DSI CTRL
area size, get it at the ioremap time.
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Abhinav Kumar <abhinavk@codeaurora.org>
Link: https://lore.kernel.org/r/20210427001828.2375555-4-dmitry.baryshkov@linaro.orgSigned-off-by: Rob Clark <robdclark@chromium.org>

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

@@ -102,6 +102,7 @@ struct msm_dsi_host {
 	int id;
 
 	void __iomem *ctrl_base;
+	phys_addr_t ctrl_size;
 	struct regulator_bulk_data supplies[DSI_DEV_REGULATOR_MAX];
 
 	struct clk *bus_clks[DSI_BUS_CLK_MAX];
@@ -1839,7 +1840,7 @@ int msm_dsi_host_init(struct msm_dsi *msm_dsi)
 		goto fail;
 	}
 
-	msm_host->ctrl_base = msm_ioremap(pdev, "dsi_ctrl", "DSI CTRL");
+	msm_host->ctrl_base = msm_ioremap_size(pdev, "dsi_ctrl", "DSI CTRL", &msm_host->ctrl_size);
 	if (IS_ERR(msm_host->ctrl_base)) {
 		pr_err("%s: unable to map Dsi ctrl base\n", __func__);
 		ret = PTR_ERR(msm_host->ctrl_base);
@@ -2494,7 +2495,7 @@ void msm_dsi_host_snapshot(struct msm_disp_state *disp_state, struct mipi_dsi_ho
 
 	pm_runtime_get_sync(&msm_host->pdev->dev);
 
-	msm_disp_snapshot_add_block(disp_state, msm_iomap_size(msm_host->pdev, "dsi_ctrl"),
+	msm_disp_snapshot_add_block(disp_state, msm_host->ctrl_size,
 			msm_host->ctrl_base, "dsi%d_ctrl", msm_host->id);
 
 	pm_runtime_put_sync(&msm_host->pdev->dev);

drivers/gpu/drm/msm/msm_drv.c

@@ -124,7 +124,7 @@ struct clk *msm_clk_get(struct platform_device *pdev, const char *name)
 }
 
 static void __iomem *_msm_ioremap(struct platform_device *pdev, const char *name,
-				  const char *dbgname, bool quiet)
+				  const char *dbgname, bool quiet, phys_addr_t *psize)
 {
 	struct resource *res;
 	unsigned long size;
@@ -153,37 +153,28 @@ static void __iomem *_msm_ioremap(struct platform_device *pdev, const char *name
 	if (reglog)
 		printk(KERN_DEBUG "IO:region %s %p %08lx\n", dbgname, ptr, size);
 
+	if (psize)
+		*psize = size;
+
 	return ptr;
 }
 
 void __iomem *msm_ioremap(struct platform_device *pdev, const char *name,
 			  const char *dbgname)
 {
-	return _msm_ioremap(pdev, name, dbgname, false);
+	return _msm_ioremap(pdev, name, dbgname, false, NULL);
 }
 
 void __iomem *msm_ioremap_quiet(struct platform_device *pdev, const char *name,
 				const char *dbgname)
 {
-	return _msm_ioremap(pdev, name, dbgname, true);
+	return _msm_ioremap(pdev, name, dbgname, true, NULL);
 }
 
-unsigned long msm_iomap_size(struct platform_device *pdev, const char *name)
+void __iomem *msm_ioremap_size(struct platform_device *pdev, const char *name,
+			  const char *dbgname, phys_addr_t *psize)
 {
-	struct resource *res;
-
-	if (name)
-		res = platform_get_resource_byname(pdev, IORESOURCE_MEM, name);
-	else
-		res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-
-	if (!res) {
-		dev_dbg(&pdev->dev, "failed to get memory resource: %s\n",
-				name);
-		return 0;
-	}
-
-	return resource_size(res);
+	return _msm_ioremap(pdev, name, dbgname, false, psize);
 }
 
 void msm_writel(u32 data, void __iomem *addr)

drivers/gpu/drm/msm/msm_drv.h

@@ -450,9 +450,10 @@ struct clk *msm_clk_bulk_get_clock(struct clk_bulk_data *bulk, int count,
 	const char *name);
 void __iomem *msm_ioremap(struct platform_device *pdev, const char *name,
 		const char *dbgname);
+void __iomem *msm_ioremap_size(struct platform_device *pdev, const char *name,
+		const char *dbgname, phys_addr_t *size);
 void __iomem *msm_ioremap_quiet(struct platform_device *pdev, const char *name,
 		const char *dbgname);
-unsigned long msm_iomap_size(struct platform_device *pdev, const char *name);
 void msm_writel(u32 data, void __iomem *addr);
 u32 msm_readl(const void __iomem *addr);
 void msm_rmw(void __iomem *addr, u32 mask, u32 or);