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>

2 files changed, 64 insertions, 0 deletions

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 @@ void fsl_rstcr_restart(char *cmd)
 	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
diff --git a/arch/powerpc/sysdev/fsl_soc.h b/arch/powerpc/sysdev/fsl_soc.h
index 74c4a96..52c831f 100644
--- a/arch/powerpc/sysdev/fsl_soc.h
+++ b/arch/powerpc/sysdev/fsl_soc.h
@@ -17,5 +17,28 @@ extern int fsl_spi_init(struct spi_board_info *board_infos,
 			void (*deactivate_cs)(u8 cs, u8 polarity));
 
 extern void fsl_rstcr_restart(char *cmd);
+
+#if defined(CONFIG_FB_FSL_DIU) || defined(CONFIG_FB_FSL_DIU_MODULE)
+#include <linux/bootmem.h>
+#include <asm/rheap.h>
+struct platform_diu_data_ops {
+	rh_block_t diu_rh_block[16];
+	rh_info_t diu_rh_info;
+	unsigned long diu_size;
+	void *diu_mem;
+
+	unsigned int (*get_pixel_format) (unsigned int bits_per_pixel,
+		int monitor_port);
+	void (*set_gamma_table) (int monitor_port, char *gamma_table_base);
+	void (*set_monitor_port) (int monitor_port);
+	void (*set_pixel_clock) (unsigned int pixclock);
+	ssize_t (*show_monitor_port) (int monitor_port, char *buf);
+	int (*set_sysfs_monitor_port) (int val);
+};
+
+extern struct platform_diu_data_ops diu_ops;
+int __init preallocate_diu_videomemory(void);
+#endif
+
 #endif
 #endif