video: mxsfb: remove fb_phys/fb_size from platform_data

There is no in-tree users of mxsfb_platform_data fb_phys/fb_size.
With CMA support in the kernel, there is no real need for platform to
reserve memory and pass address and size into driver via platform_data.
So let's remove fb_phys/fb_size from mxsfb_platform_data to ease full
device tree adoption.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>

diff --git a/drivers/video/mxsfb.c b/drivers/video/mxsfb.c
index 69fb3f1..9e8740b 100644 (file)
--- a/drivers/video/mxsfb.c
+++ b/drivers/video/mxsfb.c
@@ -168,7 +168,6 @@ struct mxsfb_info {
        unsigned ld_intf_width;
        unsigned dotclk_delay;
        const struct mxsfb_devdata *devdata;
-       int mapped;
        u32 sync;
 };
 
@@ -686,7 +685,7 @@ static int mxsfb_init_fbinfo(struct mxsfb_info *host)
        struct mxsfb_platform_data *pdata = host->pdev->dev.platform_data;
        dma_addr_t fb_phys;
        void *fb_virt;
-       unsigned fb_size = pdata->fb_size;
+       unsigned fb_size;
 
        fb_info->fbops = &mxsfb_ops;
        fb_info->flags = FBINFO_FLAG_DEFAULT | FBINFO_READS_FAST;
@@ -706,30 +705,12 @@ static int mxsfb_init_fbinfo(struct mxsfb_info *host)
        host->ld_intf_width = pdata->ld_intf_width;
 
        /* Memory allocation for framebuffer */
-       if (pdata->fb_phys) {
-               if (!fb_size)
-                       return -EINVAL;
-
-               fb_phys = pdata->fb_phys;
+       fb_size = SZ_2M;
+       fb_virt = alloc_pages_exact(fb_size, GFP_DMA);
+       if (!fb_virt)
+               return -ENOMEM;
 
-               if (!request_mem_region(fb_phys, fb_size, host->pdev->name))
-                       return -ENOMEM;
-
-               fb_virt = ioremap(fb_phys, fb_size);
-               if (!fb_virt) {
-                       release_mem_region(fb_phys, fb_size);
-                       return -ENOMEM;
-               }
-               host->mapped = 1;
-       } else {
-               if (!fb_size)
-                       fb_size = SZ_2M; /* default */
-               fb_virt = alloc_pages_exact(fb_size, GFP_DMA);
-               if (!fb_virt)
-                       return -ENOMEM;
-
-               fb_phys = virt_to_phys(fb_virt);
-       }
+       fb_phys = virt_to_phys(fb_virt);
 
        fb_info->fix.smem_start = fb_phys;
        fb_info->screen_base = fb_virt;
@@ -745,13 +726,7 @@ static void mxsfb_free_videomem(struct mxsfb_info *host)
 {
        struct fb_info *fb_info = &host->fb_info;
 
-       if (host->mapped) {
-               iounmap(fb_info->screen_base);
-               release_mem_region(fb_info->fix.smem_start,
-                               fb_info->screen_size);
-       } else {
-               free_pages_exact(fb_info->screen_base, fb_info->fix.smem_len);
-       }
+       free_pages_exact(fb_info->screen_base, fb_info->fix.smem_len);
 }
 
 static struct platform_device_id mxsfb_devtype[] = {

diff --git a/include/linux/mxsfb.h b/include/linux/mxsfb.h
index f80af86..9369640 100644 (file)
--- a/include/linux/mxsfb.h
+++ b/include/linux/mxsfb.h
@@ -35,15 +35,6 @@ struct mxsfb_platform_data {
 
        unsigned dotclk_delay;  /* refer manual HW_LCDIF_VDCTRL4 register */
        unsigned ld_intf_width; /* refer STMLCDIF_* macros */
-
-       unsigned fb_size;       /* Size of the video memory. If zero a
-                                * default will be used
-                                */
-       unsigned long fb_phys;  /* physical address for the video memory. If
-                                * zero the framebuffer memory will be dynamically
-                                * allocated. If specified,fb_size must also be specified.
-                                * fb_phys must be unused by Linux.
-                                */
        u32 sync;               /* sync mask, contains MXSFB specifics not
                                 * carried in fb_info->var.sync
                                 */