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authorTony Lindgren <tony@atomide.com>2006-04-02 17:46:26 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2006-04-02 17:46:26 +0100
commit0dc5e77c46c6b02e8286f17544d93d614c0cb892 (patch)
treeb3dc7f9205cfd3a289279a54decac77ebecd98d7 /arch/arm/plat-omap/fb.c
parent670c104ae8e7bcc28be0289a16dac2ddfb88b285 (diff)
[ARM] 3454/1: ARM: OMAP: 6/8 Update framebuffer low-level init code, take 2
Patch from Tony Lindgren Update OMAP framebuffer low-level init code from linux-omap tree by Imre Deak. Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/plat-omap/fb.c')
-rw-r--r--arch/arm/plat-omap/fb.c80
1 files changed, 80 insertions, 0 deletions
diff --git a/arch/arm/plat-omap/fb.c b/arch/arm/plat-omap/fb.c
new file mode 100644
index 000000000000..305e9b990b71
--- /dev/null
+++ b/arch/arm/plat-omap/fb.c
@@ -0,0 +1,80 @@
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/bootmem.h>
+
+#include <asm/hardware.h>
+#include <asm/io.h>
+#include <asm/mach-types.h>
+#include <asm/mach/map.h>
+
+#include <asm/arch/board.h>
+#include <asm/arch/sram.h>
+#include <asm/arch/omapfb.h>
+
+#if defined(CONFIG_FB_OMAP) || defined(CONFIG_FB_OMAP_MODULE)
+
+static struct omapfb_platform_data omapfb_config;
+
+static u64 omap_fb_dma_mask = ~(u32)0;
+
+static struct platform_device omap_fb_device = {
+ .name = "omapfb",
+ .id = -1,
+ .dev = {
+ .dma_mask = &omap_fb_dma_mask,
+ .coherent_dma_mask = ~(u32)0,
+ .platform_data = &omapfb_config,
+ },
+ .num_resources = 0,
+};
+
+/* called from map_io */
+void omapfb_reserve_mem(void)
+{
+ const struct omap_fbmem_config *fbmem_conf;
+
+ omapfb_config.fbmem.fb_sram_start = omap_fb_sram_start;
+ omapfb_config.fbmem.fb_sram_size = omap_fb_sram_size;
+
+ fbmem_conf = omap_get_config(OMAP_TAG_FBMEM, struct omap_fbmem_config);
+
+ if (fbmem_conf != NULL) {
+ /* indicate that the bootloader already initialized the
+ * fb device, so we'll skip that part in the fb driver
+ */
+ omapfb_config.fbmem.fb_sdram_start = fbmem_conf->fb_sdram_start;
+ omapfb_config.fbmem.fb_sdram_size = fbmem_conf->fb_sdram_size;
+ if (fbmem_conf->fb_sdram_size) {
+ pr_info("Reserving %u bytes SDRAM for frame buffer\n",
+ fbmem_conf->fb_sdram_size);
+ reserve_bootmem(fbmem_conf->fb_sdram_start,
+ fbmem_conf->fb_sdram_size);
+ }
+ }
+}
+
+static inline int omap_init_fb(void)
+{
+ const struct omap_lcd_config *conf;
+
+ conf = omap_get_config(OMAP_TAG_LCD, struct omap_lcd_config);
+ if (conf == NULL)
+ return 0;
+
+ omapfb_config.lcd = *conf;
+
+ return platform_device_register(&omap_fb_device);
+}
+
+arch_initcall(omap_init_fb);
+
+#else
+
+void omapfb_reserve_mem(void) {}
+
+#endif
+
+