/*
* 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.bits_per_pixel &&
VGAMode[j].hz == ppar_info->hz) {
smdbg("\nVGAMode[j].mmSizeX = %d VGAMode[j].mmSizeY ="
"%d VGAMode[j].bpp = %d"
"VGAMode[j].hz=%d\n",
VGAMode[j].mmSizeX, VGAMode[j].mmSizeY,
VGAMode[j].bpp, VGAMode[j].hz);
smdbg("VGAMode index=%d\n", j);
smtc_mmiowb(0x0, 0x3c6);
smtc_seqw(0, 0x1);
smtc_mmiowb(VGAMode[j].Init_MISC, 0x3c2);
/* init SEQ register SR00 - SR04 */
for (i = 0; i < SIZE_SR00_SR04; i++)
smtc_seqw(i, VGAMode[j].Init_SR00_SR04[i]);
/* init SEQ register SR10 - SR24 */
for (i = 0; i < SIZE_SR10_SR24; i++)
smtc_seqw(i + 0x10,
VGAMode[j].Init_SR10_SR24[i]);
/* init SEQ register SR30 - SR75 */
for (i = 0; i < SIZE_SR30_SR75; i++)
if (((i + 0x30) != 0x62) \
&& ((i + 0x30) != 0x6a) \
&& ((i + 0x30) != 0x6b))
smtc_seqw(i + 0x30,
VGAMode[j].Init_SR30_SR75[i]);
/* init SEQ register SR80 - SR93 */
for (i = 0; i < SIZE_SR80_SR93; i++)
smtc_seqw(i + 0x80,
VGAMode[j].Init_SR80_SR93[i]);
/* init SEQ register SRA0 - SRAF */
for (i = 0; i < SIZE_SRA0_SRAF; i++)
smtc_seqw(i + 0xa0,
VGAMode[j].Init_SRA0_SRAF[i]);
/* init Graphic register GR00 - GR08 */
for (i = 0; i < SIZE_GR00_GR08; i++)
smtc_grphw(i, VGAMode[j].Init_GR00_GR08[i]);
/* init Attribute register AR00 - AR14 */
for (i = 0; i < SIZE_AR00_AR14; i++)
smtc_attrw(i, VGAMode[j].Init_AR00_AR14[i]);
/* init CRTC register CR00 - CR18 */
for (i = 0; i < SIZE_CR00_CR18; i++)
smtc_crtcw(i, VGAMode[j].Init_CR00_CR18[i]);
/* init CRTC register CR30 - CR4D */
for (i = 0; i < SIZE_CR30_CR4D; i++)
smtc_crtcw(i + 0x30,
VGAMode[j].Init_CR30_CR4D[i]);
/* init CRTC register CR90 - CRA7 */
for (i = 0; i < SIZE_CR90_CRA7; i++)
smtc_crtcw(i + 0x90,
VGAMode[j].Init_CR90_CRA7[i]);
}
}
smtc_mmiowb(0x67, 0x3c2);
/* set VPR registers */
writel(0x0, ppar_info->m_pVPR + 0x0C);
writel(0x0, ppar_info->m_pVPR + 0x40);
/* set data width */
m_nScreenStride =
(ppar_info->width * sfb->fb.var.bits_per_pixel) / 64;
switch (sfb->fb.var.bits_per_pixel) {
case 8:
writel(0x0, ppar_info->m_pVPR + 0x0);
break;
case 16:
writel(0x00020000, ppar_info->m_pVPR + 0x0);
break;
case 24:
writel(0x00040000, ppar_info->m_pVPR + 0x0);
break;
case 32:
writel(0x00030000, ppar_info->m_pVPR + 0x0);
break;
}
writel((u32) (((m_nScreenStride + 2) << 16) | m_nScreenStride),
ppar_info->m_pVPR + 0x10);
}
static void sm712_setpalette(int regno, unsigned red, unsigned green,
unsigned blue, struct fb_info *info)
{
struct par_info *cur_par = (struct par_info *)info->par;
if (cur_par->BaseAddressInVRAM)
/*
* second display palette for dual head. Enable CRT RAM, 6-bit
* RAM
*/
smtc_seqw(0x66, (smtc_seqr(0x66) & 0xC3) | 0x20);
else
/* primary display palette. Enable LCD RAM only, 6-bit RAM */
smtc_seqw(0x66, (smtc_seqr(0x66) & 0xC3) | 0x10);
smtc_mmiowb(regno, dac_reg);
smtc_mmiowb(red >> 10, dac_val);
smtc_mmiowb(green >> 10, dac_val);
smtc_mmiowb(blue >> 10, dac_val);
}
static void smtc_set_timing(struct smtcfb_info *sfb, struct par_info
*ppar_info)
{
switch (ppar_info->chipID) {
case 0x710:
case 0x712:
case 0x720:
sm712_set_timing(sfb, ppar_info);
break;
}
}
static struct fb_var_screeninfo smtcfb_var = {
.xres = 1024,
.yres = 600,
.xres_virtual = 1024,
.yres_virtual = 600,
.bits_per_pixel = 16,
.red = {16, 8, 0},
.green = {8, 8, 0},
.blue = {0, 8, 0},
.activate = FB_ACTIVATE_NOW,
.height = -1,
.width = -1,
.vmode = FB_VMODE_NONINTERLACED,
};
static struct fb_fix_screeninfo smtcfb_fix = {
.id = "sm712fb",
.type = FB_TYPE_PACKED_PIXELS,
.visual = FB_VISUAL_TRUECOLOR,
.line_length = 800 * 3,
.accel = FB_ACCEL_SMI_LYNX,
};
/* chan_to_field
*
* convert a colour value into a field position
*
* from pxafb.c
*/
static inline unsigned int chan_to_field(unsigned int chan,
struct fb_bitfield *bf)
{
chan &= 0xffff;
chan >>= 16 - bf->length;
return chan << bf->offset;
}
static int cfb_blank(int blank_mode, struct fb_info *info)
{
/* clear DPMS setting */
switch (blank_mode) {
case FB_BLANK_UNBLANK:
/* Screen On: HSync: On, VSync : On */
smtc_seqw(0x01, (smtc_seqr(0x01) & (~0x20)));
smtc_seqw(0x6a, 0x16);
smtc_seqw(0x6b, 0x02);
smtc_seqw(0x21, (smtc_seqr(0x21) & 0x77));
smtc_seqw(0x22, (smtc_seqr(0x22) & (~0x30)));
smtc_seqw(0x23, (smtc_seqr(0x23) & (~0xc0)));
smtc_seqw(0x24, (smtc_seqr(0x24) | 0x01));
smtc_seqw(0x31, (smtc_seqr(0x31) | 0x03));
break;
case FB_BLANK_NORMAL:
/* Screen Off: HSync: On, VSync : On Soft blank */
smtc_seqw(0x01, (smtc_seqr(0x01) & (~0x20)));
smtc_seqw(0x6a, 0x16);
smtc_seqw(0x6b, 0x02);
smtc_seqw(0x22, (smtc_seqr(0x22) & (~0x30)));
smtc_seqw(0x23, (smtc_seqr(0x23) & (~0xc0)));
smtc_seqw(0x24, (smtc_seqr(0x24) | 0x01));
smtc_seqw(0x31, ((smtc_seqr(0x31) & (~0x07)) | 0x00));
break;
case FB_BLANK_VSYNC_SUSPEND:
/* Screen On: HSync: On, VSync : Off */
smtc_seqw(0x01, (smtc_seqr(0x01) | 0x20));
smtc_seqw(0x20, (smtc_seqr(0x20) & (~0xB0)));
smtc_seqw(0x6a, 0x0c);
smtc_seqw(0x6b, 0x02);
smtc_seqw(0x21, (smtc_seqr(0x21) | 0x88));
smtc_seqw(0x22, ((smtc_seqr(0x22) & (~0x30)) | 0x20));
smtc_seqw(0x23, ((smtc_seqr(0x23) & (~0xc0)) | 0x20));
smtc_seqw(0x24, (smtc_seqr(0x24) & (~0x01)));
smtc_seqw(0x31, ((smtc_seqr(0x31) & (~0x07)) | 0x00));
smtc_seqw(0x34, (smtc_seqr(0x34) | 0x80));
break;
case FB_BLANK_HSYNC_SUSPEND:
/* Screen On: HSync: Off, VSync : On */
smtc_seqw(0x01, (smtc_seqr(0x01) | 0x20));
smtc_seqw(0x20, (smtc_seqr(0x20) & (~0xB0)));
smtc_seqw(0x6a, 0x0c);
smtc_seqw(0x6b, 0x02);
smtc_seqw(0x21, (smtc_seqr(0x21) | 0x88));
smtc_seqw(0x22, ((smtc_seqr(0x22) & (~0x30)) | 0x10));
smtc_seqw(0x23, ((smtc_seqr(0x23) & (~0xc0)) | 0xD8));
smtc_seqw(0x24, (smtc_seqr(0x24) & (~0x01)));
smtc_seqw(0x31, ((smtc_seqr(0x31) & (~0x07)) | 0x00));
smtc_seqw(0x34, (smtc_seqr(0x34) | 0x80));
break;
case FB_BLANK_POWERDOWN:
/* Screen On: HSync: Off, VSync : Off */
smtc_seqw(0x01, (smtc_seqr(0x01) | 0x20));
smtc_seqw(0x20, (smtc_seqr(0x20) & (~0xB0)));
smtc_seqw(0x6a, 0x0c);
smtc_seqw(0x6b, 0x02);
smtc_seqw(0x21, (smtc_seqr(0x21) | 0x88));
smtc_seqw(0x22, ((smtc_seqr(0x22) & (~0x30)) | 0x30));
smtc_seqw(0x23, ((smtc_seqr(0x23) & (~0xc0)) | 0xD8));
smtc_seqw(0x24, (smtc_seqr(0x24) & (~0x01)));
smtc_seqw(0x31, ((smtc_seqr(0x31) & (~0x07)) | 0x00));
smtc_seqw(0x34, (smtc_seqr(0x34) | 0x80));
break;
default:
return -EINVAL;
}
return 0;
}
static int smtc_setcolreg(unsigned regno, unsigned red, unsigned green,
unsigned blue, unsigned trans, struct fb_info *info)
{
struct smtcfb_info *sfb = (struct smtcfb_info *)info;
u32 val;
if (regno > 255)
return 1;
switch (sfb->fb.fix.visual) {
case FB_VISUAL_DIRECTCOLOR:
case FB_VISUAL_TRUECOLOR:
/*
* 16/32 bit true-colour, use pseuo-palette for 16 base color
*/
if (regno < 16) {
if (sfb->fb.var.bits_per_pixel == 16) {
u32 *pal = sfb->fb.pseudo_palette;
val = chan_to_field(red, &sfb->fb.var.red);
val |= chan_to_field(green, \
&sfb->fb.var.green);
val |= chan_to_field(blue, &sfb->fb.var.blue);
#ifdef __BIG_ENDIAN
pal[regno] =
((red & 0xf800) >> 8) |
((green & 0xe000) >> 13) |
((green & 0x1c00) << 3) |
((blue & 0xf800) >> 3);
#else
pal[regno] = val;
#endif
} else {
u32 *pal = sfb->fb.pseudo_palette;
val = chan_to_field(red, &sfb->fb.var.red);
val |= chan_to_field(green, \
&sfb->fb.var.green);
val |= chan_to_field(blue, &sfb->fb.var.blue);
#ifdef __BIG_ENDIAN
val =
(val & 0xff00ff00 >> 8) |
(val & 0x00ff00ff << 8);
#endif
pal[regno] = val;
}
}
break;
case FB_VISUAL_PSEUDOCOLOR:
/* color depth 8 bit */
sm712_setpalette(regno, red, green, blue, info);
break;
default:
return 1; /* unknown type */
}
return 0;
}
#ifdef __BIG_ENDIAN
static ssize_t smtcfb_read(struct fb_info *info, char __user * buf, size_t
count, loff_t *ppos)
{
unsigned long p = *ppos;
u32 *buffer, *dst;
u32 __iomem *src;
int c, i, cnt = 0, err = 0;
unsigned long total_size;
if (!info || !info->screen_base)
return -ENODEV;
if (info->state != FBINFO_STATE_RUNNING)
return -EPERM;
total_size = info->screen_size;
if (total_size == 0)
total_size = info->fix.smem_len;
if (p >= total_size)
return 0;
if (count >= total_size)
count = total_size;
if (count + p > total_size)
count = total_size - p;
buffer = kmalloc((count > PAGE_SIZE) ? PAGE_SIZE : count, GFP_KERNEL);
if (!buffer)
return -ENOMEM;
src = (u32 __iomem *) (info->screen_base + p);
if (info->fbops->fb_sync)
info->fbops->fb_sync(info);
while (count) {
c = (count > PAGE_SIZE) ? PAGE_SIZE : count;
dst = buffer;
for (i = c >> 2; i--;) {
*dst = fb_readl(src++);
*dst =
(*dst & 0xff00ff00 >> 8) |
(*dst & 0x00ff00ff << 8);
dst++;
}
if (c & 3) {
u8 *dst8 = (u8 *) dst;
u8 __iomem *src8 = (u8 __iomem *) src;
for (i = c & 3; i--;) {
if (i & 1) {
*dst8++ = fb_readb(++src8);
} else {
*dst8++ = fb_readb(--src8);
src8 += 2;
}
}
src = (u32 __iomem *) src8;
}
if (copy_to_user(buf, buffer, c)) {
err = -EFAULT;
break;
}
*ppos += c;
buf += c;
cnt += c;
count -= c;
}
kfree(buffer);
return (err) ? err : cnt;
}
static ssize_t
smtcfb_write(struct fb_info *info, const char __user *buf, size_t count,
loff_t *ppos)
{
unsigned long p = *ppos;
u32 *buffer, *src;
u32 __iomem *dst;
int c, i, cnt = 0, err = 0;
unsigned long total_size;
if (!info || !info->screen_base)
return -ENODEV;
if (info->state != FBINFO_STATE_RUNNING)
return -EPERM;
total_size = info->screen_size;
if (total_size == 0)
total_size = info->fix.smem_len;
if (p > total_size)
return -EFBIG;
if (count > total_size) {
err = -EFBIG;
count = total_size;
}
if (count + p > total_size) {
if (!err)
err = -ENOSPC;
count = total_size - p;
}
buffer = kmalloc((count > PAGE_SIZE) ? PAGE_SIZE : count, GFP_KERNEL);
if (!buffer)
return -ENOMEM;
dst = (u32 __iomem *) (info->screen_base + p);
if (info->fbops->fb_sync)
info->fbops->fb_sync(info);
while (count) {
c = (count > PAGE_SIZE) ? PAGE_SIZE : count;
src = buffer;
if (copy_from_user(src, buf, c)) {
err = -EFAULT;
break;
}
for (i = c >> 2; i--;) {
fb_writel((*src & 0xff00ff00 >> 8) |
(*src & 0x00ff00ff << 8), dst++);
src++;
}
if (c & 3) {
u8 *src8 = (u8 *) src;
u8 __iomem *dst8 = (u8 __iomem *) dst;
for (i = c & 3; i--;) {
if (i & 1) {
fb_writeb(*src8++, ++dst8);
} else {
fb_writeb(*src8++, --dst8);
dst8 += 2;
}
}
dst = (u32 __iomem *) dst8;
}
*ppos += c;
buf += c;
cnt += c;
count -= c;
}
kfree(buffer);
return (cnt) ? cnt : err;
}
#endif /* ! __BIG_ENDIAN */
static struct fb_ops smtcfb_ops = {
.owner = THIS_MODULE,
.fb_setcolreg = smtc_setcolreg,
.fb_blank = cfb_blank,
.fb_fillrect = cfb_fillrect,
.fb_imageblit = cfb_imageblit,
.fb_copyarea = cfb_copyarea,
#ifdef __BIG_ENDIAN
.fb_read = smtcfb_read,
.fb_write = smtcfb_write,
#endif
};
void smtcfb_setmode(struct smtcfb_info *sfb)
{
switch (sfb->fb.var.bits_per_pixel) {
case 32:
sfb->fb.fix.visual = FB_VISUAL_TRUECOLOR;
sfb->fb.fix.line_length = sfb->fb.var.xres * 4;
sfb->fb.var.red.length = 8;
sfb->fb.var.green.length = 8;
sfb->fb.var.blue.length = 8;
sfb->fb.var.red.offset = 16;
sfb->fb.var.green.offset = 8;
sfb->fb.var.blue.offset = 0;
break;
case 8:
sfb->fb.fix.visual = FB_VISUAL_PSEUDOCOLOR;
sfb->fb.fix.line_length = sfb->fb.var.xres;
sfb->fb.var.red.offset = 5;
sfb->fb.var.red.length = 3;
sfb->fb.var.green.offset = 2;
sfb->fb.var.green.length = 3;
sfb->fb.var.blue.offset = 0;
sfb->fb.var.blue.length = 2;
break;
case 24:
sfb->fb.fix.visual = FB_VISUAL_TRUECOLOR;
sfb->fb.fix.line_length = sfb->fb.var.xres * 3;
sfb->fb.var.red.length = 8;
sfb->fb.var.green.length = 8;
sfb->fb.var.blue.length = 8;
sfb->fb.var.red.offset = 16;
sfb->fb.var.green.offset = 8;
sfb->fb.var.blue.offset = 0;
break;
case 16:
default:
sfb->fb.fix.visual = FB_VISUAL_TRUECOLOR;
sfb->fb.fix.line_length = sfb->fb.var.xres * 2;
sfb->fb.var.red.length = 5;
sfb->fb.var.green.length = 6;
sfb->fb.var.blue.length = 5;
sfb->fb.var.red.offset = 11;
sfb->fb.var.green.offset = 5;
sfb->fb.var.blue.offset = 0;
break;
}
hw.width = sfb->fb.var.xres;
hw.height = sfb->fb.var.yres;
hw.hz = 60;
smtc_set_timing(sfb, &hw);
}
/*
* Alloc struct smtcfb_info and assign the default value
*/
static struct smtcfb_info *smtc_alloc_fb_info(struct pci_dev *dev,
char *name)
{
struct smtcfb_info *sfb;
sfb = kzalloc(sizeof(struct smtcfb_info), GFP_KERNEL);
if (!sfb)
return NULL;
sfb->currcon = -1;
sfb->dev = dev;
/*** Init sfb->fb with default value ***/
sfb->fb.flags = FBINFO_FLAG_DEFAULT;
sfb->fb.fbops = &smtcfb_ops;
sfb->fb.var = smtcfb_var;
sfb->fb.fix = smtcfb_fix;
strcpy(sfb->fb.fix.id, name);
sfb->fb.fix.type = FB_TYPE_PACKED_PIXELS;
sfb->fb.fix.type_aux = 0;
sfb->fb.fix.xpanstep = 0;
sfb->fb.fix.ypanstep = 0;
sfb->fb.fix.ywrapstep = 0;
sfb->fb.fix.accel = FB_ACCEL_SMI_LYNX;
sfb->fb.var.nonstd = 0;
sfb->fb.var.activate = FB_ACTIVATE_NOW;
sfb->fb.var.height = -1;
sfb->fb.var.width = -1;
/* text mode acceleration */
sfb->fb.var.accel_flags = FB_ACCELF_TEXT;
sfb->fb.var.vmode = FB_VMODE_NONINTERLACED;
sfb->fb.par = &hw;
sfb->fb.pseudo_palette = colreg;
return sfb;
}
/*
* Unmap in the memory mapped IO registers
*/
static void smtc_unmap_mmio(struct smtcfb_info *sfb)
{
if (sfb && smtc_RegBaseAddress)
smtc_RegBaseAddress = NULL;
}
/*
* Map in the screen memory
*/
static int smtc_map_smem(struct smtcfb_info *sfb,
struct pci_dev *dev, u_long smem_len)
{
if (sfb->fb.var.bits_per_pixel == 32) {
#ifdef __BIG_ENDIAN
sfb->fb.fix.smem_start = pci_resource_start(dev, 0)
+ 0x800000;
#else
sfb->fb.fix.smem_start = pci_resource_start(dev, 0);
#endif
} else {
sfb->fb.fix.smem_start = pci_resource_start(dev, 0);
}
sfb->fb.fix.smem_len = smem_len;
sfb->fb.screen_base = smtc_VRAMBaseAddress;
if (!sfb->fb.screen_base) {
printk(KERN_INFO "%s: unable to map screen memory\n",
sfb->fb.fix.id);
return -ENOMEM;
}
return 0;
}
/*
* Unmap in the screen memory
*
*/
static void smtc_unmap_smem(struct smtcfb_info *sfb)
{
if (sfb && sfb->fb.screen_base) {
iounmap(sfb->fb.screen_base);
sfb->fb.screen_base = NULL;
}
}
/*
* We need to wake up the LynxEM+, and make sure its in linear memory mode.
*/
static inline void sm7xx_init_hw(void)
{
outb_p(0x18, 0x3c4);
outb_p(0x11, 0x3c5);
}
static void smtc_free_fb_info(struct smtcfb_info *sfb)
{
if (sfb) {
fb_alloc_cmap(&sfb->fb.cmap, 0, 0);
kfree(sfb);
}
}
/*
* sm712vga_setup - process command line options, get vga parameter
* @options: string of options
* Returns zero.
*
*/
static int __init __maybe_unused sm712vga_setup(char *options)
{
int index;
if (!options || !*options) {
smdbg("\n No vga parameter\n");
return -EINVAL;
}
smtc_screen_info.lfb_width = 0;
smtc_screen_info.lfb_height = 0;
smtc_screen_info.lfb_depth = 0;
smdbg("\nsm712vga_setup = %s\n", options);
for (index = 0;
index < (sizeof(vesa_mode) / sizeof(struct vesa_mode_table));
index++) {
if (strstr(options, vesa_mode[index].mode_index)) {
smtc_screen_info.lfb_width = vesa_mode[index].lfb_width;
smtc_screen_info.lfb_height =
vesa_mode[index].lfb_height;
smtc_screen_info.lfb_depth = vesa_mode[index].lfb_depth;
return 0;
}
}
return -1;
}
__setup("vga=", sm712vga_setup);
/* Jason (08/13/2009)
* Original init function changed to probe method to be used by pci_drv
* process used to detect chips replaced with kernel process in pci_drv
*/
static int __devinit smtcfb_pci_probe(struct pci_dev *pdev,
const struct pci_device_id *ent)
{
struct smtcfb_info *sfb;
u_long smem_size = 0x00800000; /* default 8MB */
char name[16];
int err;
unsigned long pFramebufferPhysical;
printk(KERN_INFO
"Silicon Motion display driver " SMTC_LINUX_FB_VERSION "\n");
err = pci_enable_device(pdev); /* enable SMTC chip */
if (err)
return err;
err = -ENOMEM;
hw.chipID = ent->device;
sprintf(name, "sm%Xfb", hw.chipID);
sfb = smtc_alloc_fb_info(pdev, name);
if (!sfb)
goto failed_free;
/* Jason (08/13/2009)
* Store fb_info to be further used when suspending and resuming
*/
pci_set_drvdata(pdev, sfb);
sm7xx_init_hw();
/*get mode parameter from smtc_screen_info */
if (smtc_screen_info.lfb_width != 0) {
sfb->fb.var.xres = smtc_screen_info.lfb_width;
sfb->fb.var.yres = smtc_screen_info.lfb_height;
sfb->fb.var.bits_per_pixel = smtc_screen_info.lfb_depth;
} else {
/* default resolution 1024x600 16bit mode */
sfb->fb.var.xres = SCREEN_X_RES;
sfb->fb.var.yres = SCREEN_Y_RES;
sfb->fb.var.bits_per_pixel = SCREEN_BPP;
}
#ifdef __BIG_ENDIAN
if (sfb->fb.var.bits_per_pixel == 24)
sfb->fb.var.bits_per_pixel = (smtc_screen_info.lfb_depth = 32);
#endif
/* Map address and memory detection */
pFramebufferPhysical = pci_resource_start(pdev, 0);
pci_read_config_byte(pdev, PCI_REVISION_ID, &hw.chipRevID);
switch (hw.chipID) {
case 0x710:
case 0x712:
sfb->fb.fix.mmio_start = pFramebufferPhysical + 0x00400000;
sfb->fb.fix.mmio_len = 0x00400000;
smem_size = SM712_VIDEOMEMORYSIZE;
#ifdef __BIG_ENDIAN
hw.m_pLFB = (smtc_VRAMBaseAddress =
ioremap(pFramebufferPhysical, 0x00c00000));
#else
hw.m_pLFB = (smtc_VRAMBaseAddress =
ioremap(pFramebufferPhysical, 0x00800000));
#endif
hw.m_pMMIO = (smtc_RegBaseAddress =
smtc_VRAMBaseAddress + 0x00700000);
hw.m_pDPR = smtc_VRAMBaseAddress + 0x00408000;
hw.m_pVPR = hw.m_pLFB + 0x0040c000;
#ifdef __BIG_ENDIAN
if (sfb->fb.var.bits_per_pixel == 32) {
smtc_VRAMBaseAddress += 0x800000;
hw.m_pLFB += 0x800000;
printk(KERN_INFO
"\nsmtc_VRAMBaseAddress=%p hw.m_pLFB=%p\n",
smtc_VRAMBaseAddress, hw.m_pLFB);
}
#endif
if (!smtc_RegBaseAddress) {
printk(KERN_INFO
"%s: unable to map memory mapped IO\n",
sfb->fb.fix.id);
err = -ENOMEM;
goto failed_fb;
}
/* set MCLK = 14.31818 * (0x16 / 0x2) */
smtc_seqw(0x6a, 0x16);
smtc_seqw(0x6b, 0x02);
smtc_seqw(0x62, 0x3e);
/* enable PCI burst */
smtc_seqw(0x17, 0x20);
/* enable word swap */
#ifdef __BIG_ENDIAN
if (sfb->fb.var.bits_per_pixel == 32)
smtc_seqw(0x17, 0x30);
#endif
break;
case 0x720:
sfb->fb.fix.mmio_start = pFramebufferPhysical;
sfb->fb.fix.mmio_len = 0x00200000;
smem_size = SM722_VIDEOMEMORYSIZE;
hw.m_pDPR = ioremap(pFramebufferPhysical, 0x00a00000);
hw.m_pLFB = (smtc_VRAMBaseAddress =
hw.m_pDPR + 0x00200000);
hw.m_pMMIO = (smtc_RegBaseAddress =
hw.m_pDPR + 0x000c0000);
hw.m_pVPR = hw.m_pDPR + 0x800;
smtc_seqw(0x62, 0xff);
smtc_seqw(0x6a, 0x0d);
smtc_seqw(0x6b, 0x02);
break;
default:
printk(KERN_INFO
"No valid Silicon Motion display chip was detected!\n");
goto failed_fb;
}
/* can support 32 bpp */
if (15 == sfb->fb.var.bits_per_pixel)
sfb->fb.var.bits_per_pixel = 16;
sfb->fb.var.xres_virtual = sfb->fb.var.xres;
sfb->fb.var.yres_virtual = sfb->fb.var.yres;
err = smtc_map_smem(sfb, pdev, smem_size);
if (err)
goto failed;
smtcfb_setmode(sfb);
/* Primary display starting from 0 position */
hw.BaseAddressInVRAM = 0;
sfb->fb.par = &hw;
err = register_framebuffer(&sfb->fb);
if (err < 0)
goto failed;
printk(KERN_INFO "Silicon Motion SM%X Rev%X primary display mode"
"%dx%d-%d Init Complete.\n", hw.chipID, hw.chipRevID,
sfb->fb.var.xres, sfb->fb.var.yres,
sfb->fb.var.bits_per_pixel);
return 0;
failed:
printk(KERN_INFO "Silicon Motion, Inc. primary display init fail\n");
smtc_unmap_smem(sfb);
smtc_unmap_mmio(sfb);
failed_fb:
smtc_free_fb_info(sfb);
failed_free:
pci_disable_device(pdev);
return err;
}
/* Jason (08/11/2009) PCI_DRV wrapper essential structs */
static DEFINE_PCI_DEVICE_TABLE(smtcfb_pci_table) = {
{0x126f, 0x710, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
{0x126f, 0x712, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
{0x126f, 0x720, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
{0,}
};
/* Jason (08/14/2009)
* do some clean up when the driver module is removed
*/
static void __devexit smtcfb_pci_remove(struct pci_dev *pdev)
{
struct smtcfb_info *sfb;
sfb = pci_get_drvdata(pdev);
pci_set_drvdata(pdev, NULL);
smtc_unmap_smem(sfb);
smtc_unmap_mmio(sfb);
unregister_framebuffer(&sfb->fb);
smtc_free_fb_info(sfb);
}
#ifdef CONFIG_PM
/* Jason (08/14/2009)
* suspend function, called when the suspend event is triggered
*/
static int __maybe_unused smtcfb_suspend(struct pci_dev *pdev, pm_message_t msg)
{
struct smtcfb_info *sfb;
int retv;
sfb = pci_get_drvdata(pdev);
/* set the hw in sleep mode use externel clock and self memory refresh
* so that we can turn off internal PLLs later on
*/
smtc_seqw(0x20, (smtc_seqr(0x20) | 0xc0));
smtc_seqw(0x69, (smtc_seqr(0x69) & 0xf7));
switch (msg.event) {
case PM_EVENT_FREEZE:
case PM_EVENT_PRETHAW:
pdev->dev.power.power_state = msg;
return 0;
}
/* when doing suspend, call fb apis and pci apis */
if (msg.event == PM_EVENT_SUSPEND) {
console_lock();
fb_set_suspend(&sfb->fb, 1);
console_unlock();
retv = pci_save_state(pdev);
pci_disable_device(pdev);
retv = pci_choose_state(pdev, msg);
retv = pci_set_power_state(pdev, retv);
}
pdev->dev.power.power_state = msg;
/* additionally turn off all function blocks including internal PLLs */
smtc_seqw(0x21, 0xff);
return 0;
}
static int __maybe_unused smtcfb_resume(struct pci_dev *pdev)
{
struct smtcfb_info *sfb;
int retv;
sfb = pci_get_drvdata(pdev);
/* when resuming, restore pci data and fb cursor */
if (pdev->dev.power.power_state.event != PM_EVENT_FREEZE) {
retv = pci_set_power_state(pdev, PCI_D0);
pci_restore_state(pdev);
if (pci_enable_device(pdev))
return -1;
pci_set_master(pdev);
}
/* reinit hardware */
sm7xx_init_hw();
switch (hw.chipID) {
case 0x710:
case 0x712:
/* set MCLK = 14.31818 * (0x16 / 0x2) */
smtc_seqw(0x6a, 0x16);
smtc_seqw(0x6b, 0x02);
smtc_seqw(0x62, 0x3e);
/* enable PCI burst */
smtc_seqw(0x17, 0x20);
#ifdef __BIG_ENDIAN
if (sfb->fb.var.bits_per_pixel == 32)
smtc_seqw(0x17, 0x30);
#endif
break;
case 0x720:
smtc_seqw(0x62, 0xff);
smtc_seqw(0x6a, 0x0d);
smtc_seqw(0x6b, 0x02);
break;
}
smtc_seqw(0x34, (smtc_seqr(0x34) | 0xc0));
smtc_seqw(0x33, ((smtc_seqr(0x33) | 0x08) & 0xfb));
smtcfb_setmode(sfb);
console_lock();
fb_set_suspend(&sfb->fb, 0);
console_unlock();
return 0;
}
#endif
/* Jason (08/13/2009)
* pci_driver struct used to wrap the original driver
* so that it can be registered into the kernel and
* the proper method would be called when suspending and resuming
*/
static struct pci_driver smtcfb_driver = {
.name = "smtcfb",
.id_table = smtcfb_pci_table,
.probe = smtcfb_pci_probe,
.remove = __devexit_p(smtcfb_pci_remove),
#ifdef CONFIG_PM
.suspend = smtcfb_suspend,
.resume = smtcfb_resume,
#endif
};
static int __init smtcfb_init(void)
{
return pci_register_driver(&smtcfb_driver);
}
static void __exit smtcfb_exit(void)
{
pci_unregister_driver(&smtcfb_driver);
}
module_init(smtcfb_init);
module_exit(smtcfb_exit);
MODULE_AUTHOR("Siliconmotion ");
MODULE_DESCRIPTION("Framebuffer driver for SMI Graphic Cards");
MODULE_LICENSE("GPL");