path: root/drivers/staging/sm7xx/smtcfb.c

/*
 * Silicon Motion SM7XX frame buffer device
 *
 * Copyright (C) 2006 Silicon Motion Technology Corp.
 * Authors: Ge Wang, gewang@siliconmotion.com
 *	    Boyod boyod.yang@siliconmotion.com.cn
 *
 * Copyright (C) 2009 Lemote, Inc.
 * Author: Wu Zhangjin, wuzhangjin@gmail.com
 *
 *  This file is subject to the terms and conditions of the GNU General Public
 *  License. See the file COPYING in the main directory of this archive for
 *  more details.
 *
 * Version 0.10.26192.21.01
 *	- Add PowerPC/Big endian support
 *	- Add 2D support for Lynx
 *	- Verified on2.6.19.2  Boyod.yang <boyod.yang@siliconmotion.com.cn>
 *
 * Version 0.09.2621.00.01
 *	- Only support Linux Kernel's version 2.6.21.
 *	Boyod.yang  <boyod.yang@siliconmotion.com.cn>
 *
 * Version 0.09
 *	- Only support Linux Kernel's version 2.6.12.
 *	Boyod.yang <boyod.yang@siliconmotion.com.cn>
 */

#include <linux/io.h>
#include <linux/fb.h>
#include <linux/pci.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/uaccess.h>
#include <linux/console.h>
#include <linux/screen_info.h>

#ifdef CONFIG_PM
#include <linux/pm.h>
#endif

struct screen_info smtc_screen_info;

#include "smtcfb.h"

#ifdef DEBUG
#define smdbg(format, arg...)	printk(KERN_DEBUG format , ## arg)
#else
#define smdbg(format, arg...)
#endif

/*
* Private structure
*/
struct smtcfb_info {
	/*
	 * The following is a pointer to be passed into the
	 * functions below.  The modules outside the main
	 * voyager.c driver have no knowledge as to what
	 * is within this structure.
	 */
	struct fb_info fb;
	struct display_switch *dispsw;
	struct pci_dev *dev;
	signed int currcon;

	struct {
		u8 red, green, blue;
	} palette[NR_RGB];

	u_int palette_size;
};

struct par_info {
	/*
	 * Hardware
	 */
	u16 chipID;
	unsigned char __iomem *m_pMMIO;
	char __iomem *m_pLFB;
	char *m_pDPR;
	char *m_pVPR;
	char *m_pCPR;

	u_int width;
	u_int height;
	u_int hz;
	u_long BaseAddressInVRAM;
	u8 chipRevID;
};

struct vesa_mode_table	{
	char mode_index[6];
	u16 lfb_width;
	u16 lfb_height;
	u16 lfb_depth;
};

static struct vesa_mode_table vesa_mode[] = {
	{"0x301", 640,  480,  8},
	{"0x303", 800,  600,  8},
	{"0x305", 1024, 768,	8},
	{"0x307", 1280, 1024, 8},

	{"0x311", 640,  480,  16},
	{"0x314", 800,  600,  16},
	{"0x317", 1024, 768,	16},
	{"0x31A", 1280, 1024, 16},

	{"0x312", 640,  480,  24},
	{"0x315", 800,  600,  24},
	{"0x318", 1024, 768,	24},
	{"0x31B", 1280, 1024, 24},
};

char __iomem *smtc_RegBaseAddress;	/* Memory Map IO starting address */
char __iomem *smtc_VRAMBaseAddress;	/* video memory starting address */

static u32 colreg[17];
static struct par_info hw;	/* hardware information */

u16 smtc_ChipIDs[] = {
	0x710,
	0x712,
	0x720
};

#define numSMTCchipIDs (sizeof(smtc_ChipIDs) / sizeof(u16))

static void sm712_set_timing(struct smtcfb_info *sfb,
			     struct par_info *ppar_info)
{
	int i = 0, j = 0;
	u32 m_nScreenStride;

	smdbg("\nppar_info->width = %d ppar_info->height = %d"
			"sfb->fb.var.bits_per_pixel = %d ppar_info->hz = %d\n",
			ppar_info->width, ppar_info->height,
			sfb->fb.var.bits_per_pixel, ppar_info->hz);

	for (j = 0; j < numVGAModes; j++) {
		if (VGAMode[j].mmSizeX == ppar_info->width &&
		    VGAMode[j].mmSizeY == ppar_info->height &&
		    VGAMode[j].bpp == sfb->fb.var.bit