powerpc: Add DIU platform code for MPC8610HPCD
Add platform code to support Freescale DIU. The platform code includes
framebuffer memory allocation, pixel format, monitor port, etc.
Signed-off-by: York Sun <yorksun@freescale.com>
Signed-off-by: Timur Tabi <timur@freescale.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/arch/powerpc/sysdev/fsl_soc.c b/arch/powerpc/sysdev/fsl_soc.c
index 5c1b246..7b45670 100644
--- a/arch/powerpc/sysdev/fsl_soc.c
+++ b/arch/powerpc/sysdev/fsl_soc.c
@@ -892,3 +892,44 @@
while (1) ;
}
#endif
+
+#if defined(CONFIG_FB_FSL_DIU) || defined(CONFIG_FB_FSL_DIU_MODULE)
+struct platform_diu_data_ops diu_ops = {
+ .diu_size = 1280 * 1024 * 4, /* default one 1280x1024 buffer */
+};
+EXPORT_SYMBOL(diu_ops);
+
+int __init preallocate_diu_videomemory(void)
+{
+ pr_debug("diu_size=%lu\n", diu_ops.diu_size);
+
+ diu_ops.diu_mem = __alloc_bootmem(diu_ops.diu_size, 8, 0);
+ if (!diu_ops.diu_mem) {
+ printk(KERN_ERR "fsl-diu: cannot allocate %lu bytes\n",
+ diu_ops.diu_size);
+ return -ENOMEM;
+ }
+
+ pr_debug("diu_mem=%p\n", diu_ops.diu_mem);
+
+ rh_init(&diu_ops.diu_rh_info, 4096, ARRAY_SIZE(diu_ops.diu_rh_block),
+ diu_ops.diu_rh_block);
+ return rh_attach_region(&diu_ops.diu_rh_info,
+ (unsigned long) diu_ops.diu_mem,
+ diu_ops.diu_size);
+}
+
+static int __init early_parse_diufb(char *p)
+{
+ if (!p)
+ return 1;
+
+ diu_ops.diu_size = _ALIGN_UP(memparse(p, &p), 8);
+
+ pr_debug("diu_size=%lu\n", diu_ops.diu_size);
+
+ return 0;
+}
+early_param("diufb", early_parse_diufb);
+
+#endif
