video: da8xx-fb: use devres

Replace existing resource handling in the driver with managed device
resource.

v2: implement some changes as recommended by
	Prabhakar Lad <prabhakar.csengg@gmail.com>

Signed-off-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Signed-off-by: Darren Etheridge <detheridge@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

diff --git a/drivers/video/da8xx-fb.c b/drivers/video/da8xx-fb.c
index 8384455164d7b7664aeb9c6638c753c05f9fea26..c620a32e5ac9e8c6ee1438aff0e1a7c1e0185c32 100644 (file)
--- a/drivers/video/da8xx-fb.c
+++ b/drivers/video/da8xx-fb.c
@@ -133,7 +133,6 @@
 #define PALETTE_SIZE   256
 
 static void __iomem *da8xx_fb_reg_base;
-static struct resource *lcdc_regs;
 static unsigned int lcd_revision;
 static irq_handler_t lcdc_irq_handler;
 static wait_queue_head_t frame_done_wq;
@@ -1039,12 +1038,9 @@ static int fb_remove(struct platform_device *dev)
                                  par->p_palette_base);
                dma_free_coherent(NULL, par->vram_size, par->vram_virt,
                                  par->vram_phys);
-               free_irq(par->irq, par);
                pm_runtime_put_sync(&dev->dev);
                pm_runtime_disable(&dev->dev);
                framebuffer_release(info);
-               iounmap(da8xx_fb_reg_base);
-               release_mem_region(lcdc_regs->start, resource_size(lcdc_regs));
 
        }
        return 0;
@@ -1261,12 +1257,12 @@ static int fb_probe(struct platform_device *device)
 {
        struct da8xx_lcdc_platform_data *fb_pdata =
                                                device->dev.platform_data;
+       static struct resource *lcdc_regs;
        struct lcd_ctrl_config *lcd_cfg;
        struct fb_videomode *lcdc_info;
        struct fb_info *da8xx_fb_info;
        struct clk *fb_clk = NULL;
        struct da8xx_fb_par *par;
-       resource_size_t len;
        int ret, i;
        unsigned long ulcm;
 
@@ -1276,29 +1272,14 @@ static int fb_probe(struct platform_device *device)
        }
 
        lcdc_regs = platform_get_resource(device, IORESOURCE_MEM, 0);
-       if (!lcdc_regs) {
-               dev_err(&device->dev,
-                       "Can not get memory resource for LCD controller\n");
-               return -ENOENT;
-       }
-
-       len = resource_size(lcdc_regs);
-
-       lcdc_regs = request_mem_region(lcdc_regs->start, len, lcdc_regs->name);
-       if (!lcdc_regs)
-               return -EBUSY;
+       da8xx_fb_reg_base = devm_ioremap_resource(&device->dev, lcdc_regs);
+       if (IS_ERR(da8xx_fb_reg_base))
+               return PTR_ERR(da8xx_fb_reg_base);
 
-       da8xx_fb_reg_base = ioremap(lcdc_regs->start, len);
-       if (!da8xx_fb_reg_base) {
-               ret = -EBUSY;
-               goto err_request_mem;
-       }
-
-       fb_clk = clk_get(&device->dev, "fck");
+       fb_clk = devm_clk_get(&device->dev, "fck");
        if (IS_ERR(fb_clk)) {
                dev_err(&device->dev, "Can not get device clock\n");
-               ret = -ENODEV;
-               goto err_ioremap;
+               return PTR_ERR(fb_clk);
        }
 
        pm_runtime_enable(&device->dev);
@@ -1459,8 +1440,8 @@ static int fb_probe(struct platform_device *device)
                lcdc_irq_handler = lcdc_irq_handler_rev02;
        }
 
-       ret = request_irq(par->irq, lcdc_irq_handler, 0,
-                       DRIVER_NAME, par);
+       ret = devm_request_irq(&device->dev, par->irq, lcdc_irq_handler, 0,
+                              DRIVER_NAME, par);
        if (ret)
                goto irq_freq;
        return 0;
@@ -1489,12 +1470,6 @@ err_pm_runtime_disable:
        pm_runtime_put_sync(&device->dev);
        pm_runtime_disable(&device->dev);
 
-err_ioremap:
-       iounmap(da8xx_fb_reg_base);
-
-err_request_mem:
-       release_mem_region(lcdc_regs->start, len);
-
        return ret;
 }