diff options
Diffstat (limited to 'target/linux/brcm2708/patches-3.14/0054-fb-distinguish-physical-and-bus-addresses.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-3.14/0054-fb-distinguish-physical-and-bus-addresses.patch | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-3.14/0054-fb-distinguish-physical-and-bus-addresses.patch b/target/linux/brcm2708/patches-3.14/0054-fb-distinguish-physical-and-bus-addresses.patch new file mode 100644 index 0000000000..74606f9f92 --- /dev/null +++ b/target/linux/brcm2708/patches-3.14/0054-fb-distinguish-physical-and-bus-addresses.patch @@ -0,0 +1,77 @@ +From 2bdcc63f2648ad4dfa88aaf035e025b2b193a1cc Mon Sep 17 00:00:00 2001 +From: popcornmix <popcornmix@gmail.com> +Date: Fri, 9 May 2014 15:45:13 +0100 +Subject: [PATCH 54/54] fb: distinguish physical and bus addresses + +--- + drivers/video/bcm2708_fb.c | 15 +++++++++------ + 1 file changed, 9 insertions(+), 6 deletions(-) + +diff --git a/drivers/video/bcm2708_fb.c b/drivers/video/bcm2708_fb.c +index 798eb52..b3b1e04 100644 +--- a/drivers/video/bcm2708_fb.c ++++ b/drivers/video/bcm2708_fb.c +@@ -89,6 +89,7 @@ struct bcm2708_fb { + struct dentry *debugfs_dir; + wait_queue_head_t dma_waitq; + struct bcm2708_fb_stats stats; ++ unsigned long fb_bus_address; + }; + + #define to_bcm2708(info) container_of(info, struct bcm2708_fb, fb) +@@ -314,13 +315,15 @@ static int bcm2708_fb_set_par(struct fb_info *info) + else + fb->fb.fix.visual = FB_VISUAL_TRUECOLOR; + ++ fb->fb_bus_address = fbinfo->base; ++ fbinfo->base &= ~0xc0000000; + fb->fb.fix.smem_start = fbinfo->base; + fb->fb.fix.smem_len = fbinfo->pitch * fbinfo->yres_virtual; + fb->fb.screen_size = fbinfo->screen_size; + if (fb->fb.screen_base) + iounmap(fb->fb.screen_base); + fb->fb.screen_base = +- (void *)ioremap_wc(fb->fb.fix.smem_start, fb->fb.screen_size); ++ (void *)ioremap_wc(fbinfo->base, fb->fb.screen_size); + if (!fb->fb.screen_base) { + /* the console may currently be locked */ + console_trylock(); +@@ -331,7 +334,7 @@ static int bcm2708_fb_set_par(struct fb_info *info) + } + print_debug + ("BCM2708FB: start = %p,%p width=%d, height=%d, bpp=%d, pitch=%d size=%d success=%d\n", +- (void *)fb->fb.screen_base, (void *)fb->fb.fix.smem_start, ++ (void *)fb->fb.screen_base, (void *)fb->fb_bus_address, + fbinfo->xres, fbinfo->yres, fbinfo->bpp, + fbinfo->pitch, (int)fb->fb.screen_size, val); + +@@ -457,11 +460,11 @@ static void bcm2708_fb_copyarea(struct fb_info *info, + + for (y = 0; y < region->height; y += scanlines_per_cb) { + dma_addr_t src = +- fb->fb.fix.smem_start + ++ fb->fb_bus_address + + bytes_per_pixel * region->sx + + (region->sy + y) * fb->fb.fix.line_length; + dma_addr_t dst = +- fb->fb.fix.smem_start + ++ fb->fb_bus_address + + bytes_per_pixel * region->dx + + (region->dy + y) * fb->fb.fix.line_length; + +@@ -499,10 +502,10 @@ static void bcm2708_fb_copyarea(struct fb_info *info, + stride = -fb->fb.fix.line_length; + } + set_dma_cb(cb, burst_size, +- fb->fb.fix.smem_start + dy * fb->fb.fix.line_length + ++ fb->fb_bus_address + dy * fb->fb.fix.line_length + + bytes_per_pixel * region->dx, + stride, +- fb->fb.fix.smem_start + sy * fb->fb.fix.line_length + ++ fb->fb_bus_address + sy * fb->fb.fix.line_length + + bytes_per_pixel * region->sx, + stride, + region->width * bytes_per_pixel, +-- +1.9.1 + |