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tegrakernel/kernel/kernel-4.9/drivers/video/fbdev/s3fb.c

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initial commit tegra kernel 32.6.1
2022-02-16 09:13:02 -06:00
/*
* linux/drivers/video/s3fb.c -- Frame buffer device driver for S3 Trio/Virge
*
* Copyright (c) 2006-2007 Ondrej Zajicek <santiago@crfreenet.org>
*
* 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.
*
* Code is based on David Boucher's viafb (http://davesdomain.org.uk/viafb/)
* which is based on the code of neofb.
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/mm.h>
#include <linux/tty.h>
#include <linux/delay.h>
#include <linux/fb.h>
#include <linux/svga.h>
#include <linux/init.h>
#include <linux/pci.h>
#include <linux/console.h> /* Why should fb driver call console functions? because console_lock() */
#include <video/vga.h>
#include <linux/i2c.h>
#include <linux/i2c-algo-bit.h>
struct s3fb_info {
int chip, rev, mclk_freq;
int wc_cookie;
struct vgastate state;
struct mutex open_lock;
unsigned int ref_count;
u32 pseudo_palette[16];
#ifdef CONFIG_FB_S3_DDC
u8 __iomem *mmio;
bool ddc_registered;
struct i2c_adapter ddc_adapter;
struct i2c_algo_bit_data ddc_algo;
#endif
};
/* ------------------------------------------------------------------------- */
static const struct svga_fb_format s3fb_formats[] = {
{ 0, {0, 6, 0}, {0, 6, 0}, {0, 6, 0}, {0, 0, 0}, 0,
FB_TYPE_TEXT, FB_AUX_TEXT_SVGA_STEP4, FB_VISUAL_PSEUDOCOLOR, 8, 16},
{ 4, {0, 4, 0}, {0, 4, 0}, {0, 4, 0}, {0, 0, 0}, 0,
FB_TYPE_PACKED_PIXELS, 0, FB_VISUAL_PSEUDOCOLOR, 8, 16},
{ 4, {0, 4, 0}, {0, 4, 0}, {0, 4, 0}, {0, 0, 0}, 1,
FB_TYPE_INTERLEAVED_PLANES, 1, FB_VISUAL_PSEUDOCOLOR, 8, 16},
{ 8, {0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0}, 0,
FB_TYPE_PACKED_PIXELS, 0, FB_VISUAL_PSEUDOCOLOR, 4, 8},
{16, {10, 5, 0}, {5, 5, 0}, {0, 5, 0}, {0, 0, 0}, 0,
FB_TYPE_PACKED_PIXELS, 0, FB_VISUAL_TRUECOLOR, 2, 4},
{16, {11, 5, 0}, {5, 6, 0}, {0, 5, 0}, {0, 0, 0}, 0,
FB_TYPE_PACKED_PIXELS, 0, FB_VISUAL_TRUECOLOR, 2, 4},
{24, {16, 8, 0}, {8, 8, 0}, {0, 8, 0}, {0, 0, 0}, 0,
FB_TYPE_PACKED_PIXELS, 0, FB_VISUAL_TRUECOLOR, 1, 2},
{32, {16, 8, 0}, {8, 8, 0}, {0, 8, 0}, {0, 0, 0}, 0,
FB_TYPE_PACKED_PIXELS, 0, FB_VISUAL_TRUECOLOR, 1, 2},
SVGA_FORMAT_END
};
static const struct svga_pll s3_pll = {3, 129, 3, 33, 0, 3,
35000, 240000, 14318};
static const struct svga_pll s3_trio3d_pll = {3, 129, 3, 31, 0, 4,
230000, 460000, 14318};
static const int s3_memsizes[] = {4096, 0, 3072, 8192, 2048, 6144, 1024, 512};
static const char * const s3_names[] = {"S3 Unknown", "S3 Trio32", "S3 Trio64", "S3 Trio64V+",
"S3 Trio64UV+", "S3 Trio64V2/DX", "S3 Trio64V2/GX",
"S3 Plato/PX", "S3 Aurora64V+", "S3 Virge",
"S3 Virge/VX", "S3 Virge/DX", "S3 Virge/GX",
"S3 Virge/GX2", "S3 Virge/GX2+", "",
"S3 Trio3D/1X", "S3 Trio3D/2X", "S3 Trio3D/2X",
"S3 Trio3D", "S3 Virge/MX"};
#define CHIP_UNKNOWN 0x00
#define CHIP_732_TRIO32 0x01
#define CHIP_764_TRIO64 0x02
#define CHIP_765_TRIO64VP 0x03
#define CHIP_767_TRIO64UVP 0x04
#define CHIP_775_TRIO64V2_DX 0x05
#define CHIP_785_TRIO64V2_GX 0x06
#define CHIP_551_PLATO_PX 0x07
#define CHIP_M65_AURORA64VP 0x08
#define CHIP_325_VIRGE 0x09
#define CHIP_988_VIRGE_VX 0x0A
#define CHIP_375_VIRGE_DX 0x0B
#define CHIP_385_VIRGE_GX 0x0C
#define CHIP_357_VIRGE_GX2 0x0D
#define CHIP_359_VIRGE_GX2P 0x0E
#define CHIP_360_TRIO3D_1X 0x10
#define CHIP_362_TRIO3D_2X 0x11
#define CHIP_368_TRIO3D_2X 0x12
#define CHIP_365_TRIO3D 0x13
#define CHIP_260_VIRGE_MX 0x14
#define CHIP_XXX_TRIO 0x80
#define CHIP_XXX_TRIO64V2_DXGX 0x81
#define CHIP_XXX_VIRGE_DXGX 0x82
#define CHIP_36X_TRIO3D_1X_2X 0x83
#define CHIP_UNDECIDED_FLAG 0x80
#define CHIP_MASK 0xFF
#define MMIO_OFFSET 0x1000000
#define MMIO_SIZE 0x10000
/* CRT timing register sets */
static const struct vga_regset s3_h_total_regs[] = {{0x00, 0, 7}, {0x5D, 0, 0}, VGA_REGSET_END};
static const struct vga_regset s3_h_display_regs[] = {{0x01, 0, 7}, {0x5D, 1, 1}, VGA_REGSET_END};
static const struct vga_regset s3_h_blank_start_regs[] = {{0x02, 0, 7}, {0x5D, 2, 2}, VGA_REGSET_END};
static const struct vga_regset s3_h_blank_end_regs[] = {{0x03, 0, 4}, {0x05, 7, 7}, VGA_REGSET_END};
static const struct vga_regset s3_h_sync_start_regs[] = {{0x04, 0, 7}, {0x5D, 4, 4}, VGA_REGSET_END};
static const struct vga_regset s3_h_sync_end_regs[] = {{0x05, 0, 4}, VGA_REGSET_END};
static const struct vga_regset s3_v_total_regs[] = {{0x06, 0, 7}, {0x07, 0, 0}, {0x07, 5, 5}, {0x5E, 0, 0}, VGA_REGSET_END};
static const struct vga_regset s3_v_display_regs[] = {{0x12, 0, 7}, {0x07, 1, 1}, {0x07, 6, 6}, {0x5E, 1, 1}, VGA_REGSET_END};
static const struct vga_regset s3_v_blank_start_regs[] = {{0x15, 0, 7}, {0x07, 3, 3}, {0x09, 5, 5}, {0x5E, 2, 2}, VGA_REGSET_END};
static const struct vga_regset s3_v_blank_end_regs[] = {{0x16, 0, 7}, VGA_REGSET_END};
static const struct vga_regset s3_v_sync_start_regs[] = {{0x10, 0, 7}, {0x07, 2, 2}, {0x07, 7, 7}, {0x5E, 4, 4}, VGA_REGSET_END};
static const struct vga_regset s3_v_sync_end_regs[] = {{0x11, 0, 3}, VGA_REGSET_END};
static const struct vga_regset s3_line_compare_regs[] = {{0x18, 0, 7}, {0x07, 4, 4}, {0x09, 6, 6}, {0x5E, 6, 6}, VGA_REGSET_END};
static const struct vga_regset s3_start_address_regs[] = {{0x0d, 0, 7}, {0x0c, 0, 7}, {0x69, 0, 4}, VGA_REGSET_END};
static const struct vga_regset s3_offset_regs[] = {{0x13, 0, 7}, {0x51, 4, 5}, VGA_REGSET_END}; /* set 0x43 bit 2 to 0 */
static const struct vga_regset s3_dtpc_regs[] = {{0x3B, 0, 7}, {0x5D, 6, 6}, VGA_REGSET_END};
static const struct svga_timing_regs s3_timing_regs = {
s3_h_total_regs, s3_h_display_regs, s3_h_blank_start_regs,
s3_h_blank_end_regs, s3_h_sync_start_regs, s3_h_sync_end_regs,
s3_v_total_regs, s3_v_display_regs, s3_v_blank_start_regs,
s3_v_blank_end_regs, s3_v_sync_start_regs, s3_v_sync_end_regs,
};
/* ------------------------------------------------------------------------- */
/* Module parameters */
static char *mode_option;
static int mtrr = 1;
static int fasttext = 1;
MODULE_AUTHOR("(c) 2006-2007 Ondrej Zajicek <santiago@crfreenet.org>");
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("fbdev driver for S3 Trio/Virge");
module_param(mode_option, charp, 0444);
MODULE_PARM_DESC(mode_option, "Default video mode ('640x480-8@60', etc)");
module_param_named(mode, mode_option, charp, 0444);
MODULE_PARM_DESC(mode, "Default video mode ('640x480-8@60', etc) (deprecated)");
module_param(mtrr, int, 0444);
MODULE_PARM_DESC(mtrr, "Enable write-combining with MTRR (1=enable, 0=disable, default=1)");
module_param(fasttext, int, 0644);
MODULE_PARM_DESC(fasttext, "Enable S3 fast text mode (1=enable, 0=disable, default=1)");
/* ------------------------------------------------------------------------- */
#ifdef CONFIG_FB_S3_DDC
#define DDC_REG 0xaa /* Trio 3D/1X/2X */
#define DDC_MMIO_REG 0xff20 /* all other chips */
#define DDC_SCL_OUT (1 << 0)
#define DDC_SDA_OUT (1 << 1)
#define DDC_SCL_IN (1 << 2)
#define DDC_SDA_IN (1 << 3)
#define DDC_DRIVE_EN (1 << 4)
static bool s3fb_ddc_needs_mmio(int chip)
{
return !(chip == CHIP_360_TRIO3D_1X ||
chip == CHIP_362_TRIO3D_2X ||
chip == CHIP_368_TRIO3D_2X);
}
static u8 s3fb_ddc_read(struct s3fb_info *par)
{
if (s3fb_ddc_needs_mmio(par->chip))
return readb(par->mmio + DDC_MMIO_REG);
else
return vga_rcrt(par->state.vgabase, DDC_REG);
}
static void s3fb_ddc_write(struct s3fb_info *par, u8 val)
{
if (s3fb_ddc_needs_mmio(par->chip))
writeb(val, par->mmio + DDC_MMIO_REG);
else
vga_wcrt(par->state.vgabase, DDC_REG, val);
}
static void s3fb_ddc_setscl(void *data, int val)
{
struct s3fb_info *par = data;
unsigned char reg;
reg = s3fb_ddc_read(par) | DDC_DRIVE_EN;
if (val)
reg |= DDC_SCL_OUT;
else
reg &= ~DDC_SCL_OUT;
s3fb_ddc_write(par, reg);
}
static void s3fb_ddc_setsda(void *data, int val)
{
struct s3fb_info *par = data;
unsigned char reg;
reg = s3fb_ddc_read(par) | DDC_DRIVE_EN;
if (val)
reg |= DDC_SDA_OUT;
else
reg &= ~DDC_SDA_OUT;
s3fb_ddc_write(par, reg);
}
static int s3fb_ddc_getscl(void *data)
{
struct s3fb_info *par = data;
return !!(s3fb_ddc_read(par) & DDC_SCL_IN);
}
static int s3fb_ddc_getsda(void *data)
{
struct s3fb_info *par = data;
return !!(s3fb_ddc_read(par) & DDC_SDA_IN);
}
static int s3fb_setup_ddc_bus(struct fb_info *info)
{
struct s3fb_info *par = info->par;
strlcpy(par->ddc_adapter.name, info->fix.id,
sizeof(par->ddc_adapter.name));
par->ddc_adapter.owner = THIS_MODULE;
par->ddc_adapter.class = I2C_CLASS_DDC;
par->ddc_adapter.algo_data = &par->ddc_algo;
par->ddc_adapter.dev.parent = info->device;
par->ddc_algo.setsda = s3fb_ddc_setsda;
par->ddc_algo.setscl = s3fb_ddc_setscl;
par->ddc_algo.getsda = s3fb_ddc_getsda;
par->ddc_algo.getscl = s3fb_ddc_getscl;
par->ddc_algo.udelay = 10;
par->ddc_algo.timeout = 20;
par->ddc_algo.data = par;
i2c_set_adapdata(&par->ddc_adapter, par);
/*
* some Virge cards have external MUX to switch chip I2C bus between
* DDC and extension pins - switch it do DDC
*/
/* vga_wseq(par->state.vgabase, 0x08, 0x06); - not needed, already unlocked */
if (par->chip == CHIP_357_VIRGE_GX2 ||
par->chip == CHIP_359_VIRGE_GX2P ||
par->chip == CHIP_260_VIRGE_MX)
svga_wseq_mask(par->state.vgabase, 0x0d, 0x01, 0x03);
else
svga_wseq_mask(par->state.vgabase, 0x0d, 0x00, 0x03);
/* some Virge need this or the DDC is ignored */
svga_wcrt_mask(par->state.vgabase, 0x5c, 0x03, 0x03);
return i2c_bit_add_bus(&par->ddc_adapter);
}
#endif /* CONFIG_FB_S3_DDC */
/* ------------------------------------------------------------------------- */
/* Set font in S3 fast text mode */
static void s3fb_settile_fast(struct fb_info *info, struct fb_tilemap *map)
{
const u8 *font = map->data;
u8 __iomem *fb = (u8 __iomem *) info->screen_base;
int i, c;
if ((map->width != 8) || (map->height != 16) ||
(map->depth != 1) || (map->length != 256)) {
fb_err(info, "unsupported font parameters: width %d, height %d, depth %d, length %d\n",
map->width, map->height, map->depth, map->length);
return;
}
fb += 2;
for (i = 0; i < map->height; i++) {
for (c = 0; c < map->length; c++) {
fb_writeb(font[c * map->height + i], fb + c * 4);
}
fb += 1024;
}
}
static void s3fb_tilecursor(struct fb_info *info, struct fb_tilecursor *cursor)
{
struct s3fb_info *par = info->par;
svga_tilecursor(par->state.vgabase, info, cursor);
}
static struct fb_tile_ops s3fb_tile_ops = {
.fb_settile = svga_settile,
.fb_tilecopy = svga_tilecopy,
.fb_tilefill = svga_tilefill,
.fb_tileblit = svga_tileblit,
.fb_tilecursor = s3fb_tilecursor,
.fb_get_tilemax = svga_get_tilemax,
};
static struct fb_tile_ops s3fb_fast_tile_ops = {
.fb_settile = s3fb_settile_fast,
.fb_tilecopy = svga_tilecopy,
.fb_tilefill = svga_tilefill,
.fb_tileblit = svga_tileblit,
.fb_tilecursor = s3fb_tilecursor,
.fb_get_tilemax = svga_get_tilemax,
};
/* ------------------------------------------------------------------------- */
/* image data is MSB-first, fb structure is MSB-first too */
static inline u32 expand_color(u32 c)
{
return ((c & 1) | ((c & 2) << 7) | ((c & 4) << 14) | ((c & 8) << 21)) * 0xFF;
}
/* s3fb_iplan_imageblit silently assumes that almost everything is 8-pixel aligned */
static void s3fb_iplan_imageblit(struct fb_info *info, const struct fb_image *image)
{
u32 fg = expand_color(image->fg_color);
u32 bg = expand_color(image->bg_color);
const u8 *src1, *src;
u8 __iomem *dst1;
u32 __iomem *dst;
u32 val;
int x, y;
src1 = image->data;
dst1 = info->screen_base + (image->dy * info->fix.line_length)
+ ((image->dx / 8) * 4);
for (y = 0; y < image->height; y++) {
src = src1;
dst = (u32 __iomem *) dst1;
for (x = 0; x < image->width; x += 8) {
val = *(src++) * 0x01010101;
val = (val & fg) | (~val & bg);
fb_writel(val, dst++);
}
src1 += image->width / 8;
dst1 += info->fix.line_length;
}
}
/* s3fb_iplan_fillrect silently assumes that almost everything is 8-pixel aligned */
static void s3fb_iplan_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
{
u32 fg = expand_color(rect->color);
u8 __iomem *dst1;
u32 __iomem *dst;
int x, y;
dst1 = info->screen_base + (rect->dy * info->fix.line_length)
+ ((rect->dx / 8) * 4);
for (y = 0; y < rect->height; y++) {
dst = (u32 __iomem *) dst1;
for (x = 0; x < rect->width; x += 8) {
fb_writel(fg, dst++);
}
dst1 += info->fix.line_length;
}
}
/* image data is MSB-first, fb structure is high-nibble-in-low-byte-first */
static inline u32 expand_pixel(u32 c)
{
return (((c & 1) << 24) | ((c & 2) << 27) | ((c & 4) << 14) | ((c & 8) << 17) |
((c & 16) << 4) | ((c & 32) << 7) | ((c & 64) >> 6) | ((c & 128) >> 3)) * 0xF;
}
/* s3fb_cfb4_imageblit silently assumes that almost everything is 8-pixel aligned */
static void s3fb_cfb4_imageblit(struct fb_info *info, const struct fb_image *image)
{
u32 fg = image->fg_color * 0x11111111;
u32 bg = image->bg_color * 0x11111111;
const u8 *src1, *src;
u8 __iomem *dst1;
u32 __iomem *dst;
u32 val;
int x, y;
src1 = image->data;
dst1 = info->screen_base + (image->dy * info->fix.line_length)
+ ((image->dx / 8) * 4);
for (y = 0; y < image->height; y++) {
src = src1;
dst = (u32 __iomem *) dst1;
for (x = 0; x < image->width; x += 8) {
val = expand_pixel(*(src++));
val = (val & fg) | (~val & bg);
fb_writel(val, dst++);
}
src1 += image->width / 8;
dst1 += info->fix.line_length;
}
}
static void s3fb_imageblit(struct fb_info *info, const struct fb_image *image)
{
if ((info->var.bits_per_pixel == 4) && (image->depth == 1)
&& ((image->width % 8) == 0) && ((image->dx % 8) == 0)) {
if (info->fix.type == FB_TYPE_INTERLEAVED_PLANES)
s3fb_iplan_imageblit(info, image);
else
s3fb_cfb4_imageblit(info, image);
} else
cfb_imageblit(info, image);
}
static void s3fb_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
{
if ((info->var.bits_per_pixel == 4)
&& ((rect->width % 8) == 0) && ((rect->dx % 8) == 0)
&& (info->fix.type == FB_TYPE_INTERLEAVED_PLANES))
s3fb_iplan_fillrect(info, rect);
else
cfb_fillrect(info, rect);
}
/* ------------------------------------------------------------------------- */
static void s3_set_pixclock(struct fb_info *info, u32 pixclock)
{
struct s3fb_info *par = info->par;
u16 m, n, r;
u8 regval;
int rv;
rv = svga_compute_pll((par->chip == CHIP_365_TRIO3D) ? &s3_trio3d_pll : &s3_pll,
1000000000 / pixclock, &m, &n, &r, info->node);
if (rv < 0) {
fb_err(info, "cannot set requested pixclock, keeping old value\n");
return;
}
/* Set VGA misc register */
regval = vga_r(par->state.vgabase, VGA_MIS_R);
vga_w(par->state.vgabase, VGA_MIS_W, regval | VGA_MIS_ENB_PLL_LOAD);
/* Set S3 clock registers */
if (par->chip == CHIP_357_VIRGE_GX2 ||
par->chip == CHIP_359_VIRGE_GX2P ||
par->chip == CHIP_360_TRIO3D_1X ||
par->chip == CHIP_362_TRIO3D_2X ||
par->chip == CHIP_368_TRIO3D_2X ||
par->chip == CHIP_260_VIRGE_MX) {
vga_wseq(par->state.vgabase, 0x12, (n - 2) | ((r & 3) << 6)); /* n and two bits of r */
vga_wseq(par->state.vgabase, 0x29, r >> 2); /* remaining highest bit of r */
} else
vga_wseq(par->state.vgabase, 0x12, (n - 2) | (r << 5));
vga_wseq(par->state.vgabase, 0x13, m - 2);
udelay(1000);
/* Activate clock - write 0, 1, 0 to seq/15 bit 5 */
regval = vga_rseq (par->state.vgabase, 0x15); /* | 0x80; */
vga_wseq(par->state.vgabase, 0x15, regval & ~(1<<5));
vga_wseq(par->state.vgabase, 0x15, regval | (1<<5));
vga_wseq(par->state.vgabase, 0x15, regval & ~(1<<5));
}
/* Open framebuffer */
static int s3fb_open(struct fb_info *info, int user)
{
struct s3fb_info *par = info->par;
mutex_lock(&(par->open_lock));
if (par->ref_count == 0) {
void __iomem *vgabase = par->state.vgabase;
memset(&(par->state), 0, sizeof(struct vgastate));
par->state.vgabase = vgabase;
par->state.flags = VGA_SAVE_MODE | VGA_SAVE_FONTS | VGA_SAVE_CMAP;
par->state.num_crtc = 0x70;
par->state.num_seq = 0x20;
save_vga(&(par->state));
}
par->ref_count++;
mutex_unlock(&(par->open_lock));
return 0;
}
/* Close framebuffer */
static int s3fb_release(struct fb_info *info, int user)
{
struct s3fb_info *par = info->par;
mutex_lock(&(par->open_lock));
if (par->ref_count == 0) {
mutex_unlock(&(par->open_lock));
return -EINVAL;
}
if (par->ref_count == 1)
restore_vga(&(par->state));
par->ref_count--;
mutex_unlock(&(par->open_lock));
return 0;
}
/* Validate passed in var */
static int s3fb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
{
struct s3fb_info *par = info->par;
int rv, mem, step;
u16 m, n, r;
/* Find appropriate format */
rv = svga_match_format (s3fb_formats, var, NULL);
/* 32bpp mode is not supported on VIRGE VX,
24bpp is not supported on others */
if ((par->chip == CHIP_988_VIRGE_VX) ? (rv == 7) : (rv == 6))
rv = -EINVAL;
if (rv < 0) {
fb_err(info, "unsupported mode requested\n");
return rv;
}
/* Do not allow to have real resoulution larger than virtual */
if (var->xres > var->xres_virtual)
var->xres_virtual = var->xres;
if (var->yres > var->yres_virtual)
var->yres_virtual = var->yres;
/* Round up xres_virtual to have proper alignment of lines */
step = s3fb_formats[rv].xresstep - 1;
var->xres_virtual = (var->xres_virtual+step) & ~step;
/* Check whether have enough memory */
mem = ((var->bits_per_pixel * var->xres_virtual) >> 3) * var->yres_virtual;
if (mem > info->screen_size) {
fb_err(info, "not enough framebuffer memory (%d kB requested , %u kB available)\n",
mem >> 10, (unsigned int) (info->screen_size >> 10));
return -EINVAL;
}
rv = svga_check_timings (&s3_timing_regs, var, info->node);
if (rv < 0) {
fb_err(info, "invalid timings requested\n");
return rv;
}
rv = svga_compute_pll(&s3_pll, PICOS2KHZ(var->pixclock), &m, &n, &r,
info->node);
if (rv < 0) {
fb_err(info, "invalid pixclock value requested\n");
return rv;
}
return 0;
}
/* Set video mode from par */
static int s3fb_set_par(struct fb_info *info)
{
struct s3fb_info *par = info->par;
u32 value, mode, hmul, offset_value, screen_size, multiplex, dbytes;
u32 bpp = info->var.bits_per_pixel;
u32 htotal, hsstart;
if (bpp != 0) {
info->fix.ypanstep = 1;
info->fix.line_length = (info->var.xres_virtual * bpp) / 8;
info->flags &= ~FBINFO_MISC_TILEBLITTING;
info->tileops = NULL;
/* in 4bpp supports 8p wide tiles only, any tiles otherwise */
info->pixmap.blit_x = (bpp == 4) ? (1 << (8 - 1)) : (~(u32)0);
info->pixmap.blit_y = ~(u32)0;
offset_value = (info->var.xres_virtual * bpp) / 64;
screen_size = info->var.yres_virtual * info->fix.line_length;
} else {
info->fix.ypanstep = 16;
info->fix.line_length = 0;
info->flags |= FBINFO_MISC_TILEBLITTING;
info->tileops = fasttext ? &s3fb_fast_tile_ops : &s3fb_tile_ops;
/* supports 8x16 tiles only */
info->pixmap.blit_x = 1 << (8 - 1);
info->pixmap.blit_y = 1 << (16 - 1);
offset_value = info->var.xres_virtual / 16;
screen_size = (info->var.xres_virtual * info->var.yres_virtual) / 64;
}
info->var.xoffset = 0;
info->var.yoffset = 0;
info->var.activate = FB_ACTIVATE_NOW;
/* Unlock registers */
vga_wcrt(par->state.vgabase, 0x38, 0x48);
vga_wcrt(par->state.vgabase, 0x39, 0xA5);
vga_wseq(par->state.vgabase, 0x08, 0x06);
svga_wcrt_mask(par->state.vgabase, 0x11, 0x00, 0x80);
/* Blank screen and turn off sync */
svga_wseq_mask(par->state.vgabase, 0x01, 0x20, 0x20);
svga_wcrt_mask(par->state.vgabase, 0x17, 0x00, 0x80);
/* Set default values */
svga_set_default_gfx_regs(par->state.vgabase);
svga_set_default_atc_regs(par->state.vgabase);
svga_set_default_seq_regs(par->state.vgabase);
svga_set_default_crt_regs(par->state.vgabase);
svga_wcrt_multi(par->state.vgabase, s3_line_compare_regs, 0xFFFFFFFF);
svga_wcrt_multi(par->state.vgabase, s3_start_address_regs, 0);
/* S3 specific initialization */
svga_wcrt_mask(par->state.vgabase, 0x58, 0x10, 0x10); /* enable linear framebuffer */
svga_wcrt_mask(par->state.vgabase, 0x31, 0x08, 0x08); /* enable sequencer access to framebuffer above 256 kB */
/* svga_wcrt_mask(par->state.vgabase, 0x33, 0x08, 0x08); */ /* DDR ? */
/* svga_wcrt_mask(par->state.vgabase, 0x43, 0x01, 0x01); */ /* DDR ? */
svga_wcrt_mask(par->state.vgabase, 0x33, 0x00, 0x08); /* no DDR ? */
svga_wcrt_mask(par->state.vgabase, 0x43, 0x00, 0x01); /* no DDR ? */
svga_wcrt_mask(par->state.vgabase, 0x5D, 0x00, 0x28); /* Clear strange HSlen bits */
/* svga_wcrt_mask(par->state.vgabase, 0x58, 0x03, 0x03); */
/* svga_wcrt_mask(par->state.vgabase, 0x53, 0x12, 0x13); */ /* enable MMIO */
/* svga_wcrt_mask(par->state.vgabase, 0x40, 0x08, 0x08); */ /* enable write buffer */
/* Set the offset register */
fb_dbg(info, "offset register : %d\n", offset_value);
svga_wcrt_multi(par->state.vgabase, s3_offset_regs, offset_value);
if (par->chip != CHIP_357_VIRGE_GX2 &&
par->chip != CHIP_359_VIRGE_GX2P &&
par->chip != CHIP_360_TRIO3D_1X &&
par->chip != CHIP_362_TRIO3D_2X &&
par->chip != CHIP_368_TRIO3D_2X &&
par->chip != CHIP_260_VIRGE_MX) {
vga_wcrt(par->state.vgabase, 0x54, 0x18); /* M parameter */
vga_wcrt(par->state.vgabase, 0x60, 0xff); /* N parameter */
vga_wcrt(par->state.vgabase, 0x61, 0xff); /* L parameter */
vga_wcrt(par->state.vgabase, 0x62, 0xff); /* L parameter */
}
vga_wcrt(par->state.vgabase, 0x3A, 0x35);
svga_wattr(par->state.vgabase, 0x33, 0x00);
if (info->var.vmode & FB_VMODE_DOUBLE)
svga_wcrt_mask(par->state.vgabase, 0x09, 0x80, 0x80);
else
svga_wcrt_mask(par->state.vgabase, 0x09, 0x00, 0x80);
if (info->var.vmode & FB_VMODE_INTERLACED)
svga_wcrt_mask(par->state.vgabase, 0x42, 0x20, 0x20);
else
svga_wcrt_mask(par->state.vgabase, 0x42, 0x00, 0x20);
/* Disable hardware graphics cursor */
svga_wcrt_mask(par->state.vgabase, 0x45, 0x00, 0x01);
/* Disable Streams engine */
svga_wcrt_mask(par->state.vgabase, 0x67, 0x00, 0x0C);
mode = svga_match_format(s3fb_formats, &(info->var), &(info->fix));
/* S3 virge DX hack */
if (par->chip == CHIP_375_VIRGE_DX) {
vga_wcrt(par->state.vgabase, 0x86, 0x80);
vga_wcrt(par->state.vgabase, 0x90, 0x00);
}
/* S3 virge VX hack */
if (par->chip == CHIP_988_VIRGE_VX) {
vga_wcrt(par->state.vgabase, 0x50, 0x00);
vga_wcrt(par->state.vgabase, 0x67, 0x50);
msleep(10); /* screen remains blank sometimes without this */
vga_wcrt(par->state.vgabase, 0x63, (mode <= 2) ? 0x90 : 0x09);
vga_wcrt(par->state.vgabase, 0x66, 0x90);
}
if (par->chip == CHIP_357_VIRGE_GX2 ||
par->chip == CHIP_359_VIRGE_GX2P ||
par->chip == CHIP_360_TRIO3D_1X ||
par->chip == CHIP_362_TRIO3D_2X ||
par->chip == CHIP_368_TRIO3D_2X ||
par->chip == CHIP_365_TRIO3D ||
par->chip == CHIP_375_VIRGE_DX ||
par->chip == CHIP_385_VIRGE_GX ||
par->chip == CHIP_260_VIRGE_MX) {
dbytes = info->var.xres * ((bpp+7)/8);
vga_wcrt(par->state.vgabase, 0x91, (dbytes + 7) / 8);
vga_wcrt(par->state.vgabase, 0x90, (((dbytes + 7) / 8) >> 8) | 0x80);
vga_wcrt(par->state.vgabase, 0x66, 0x81);
}
if (par->chip == CHIP_357_VIRGE_GX2 ||
par->chip == CHIP_359_VIRGE_GX2P ||
par->chip == CHIP_360_TRIO3D_1X ||
par->chip == CHIP_362_TRIO3D_2X ||
par->chip == CHIP_368_TRIO3D_2X ||
par->chip == CHIP_260_VIRGE_MX)
vga_wcrt(par->state.vgabase, 0x34, 0x00);
else /* enable Data Transfer Position Control (DTPC) */
vga_wcrt(par->state.vgabase, 0x34, 0x10);
svga_wcrt_mask(par->state.vgabase, 0x31, 0x00, 0x40);
multiplex = 0;
hmul = 1;
/* Set mode-specific register values */
switch (mode) {
case 0:
fb_dbg(info, "text mode\n");
svga_set_textmode_vga_regs(par->state.vgabase);
/* Set additional registers like in 8-bit mode */
svga_wcrt_mask(par->state.vgabase, 0x50, 0x00, 0x30);
svga_wcrt_mask(par->state.vgabase, 0x67, 0x00, 0xF0);
/* Disable enhanced mode */
svga_wcrt_mask(par->state.vgabase, 0x3A, 0x00, 0x30);
if (fasttext) {
fb_dbg(info, "high speed text mode set\n");
svga_wcrt_mask(par->state.vgabase, 0x31, 0x40, 0x40);
}
break;
case 1:
fb_dbg(info, "4 bit pseudocolor\n");
vga_wgfx(par->state.vgabase, VGA_GFX_MODE, 0x40);
/* Set additional registers like in 8-bit mode */
svga_wcrt_mask(par->state.vgabase, 0x50, 0x00, 0x30);
svga_wcrt_mask(par->state.vgabase, 0x67, 0x00, 0xF0);
/* disable enhanced mode */
svga_wcrt_mask(par->state.vgabase, 0x3A, 0x00, 0x30);
break;
case 2:
fb_dbg(info, "4 bit pseudocolor, planar\n");
/* Set additional registers like in 8-bit mode */
svga_wcrt_mask(par->state.vgabase, 0x50, 0x00, 0x30);
svga_wcrt_mask(par->state.vgabase, 0x67, 0x00, 0xF0);
/* disable enhanced mode */
svga_wcrt_mask(par->state.vgabase, 0x3A, 0x00, 0x30);
break;
case 3:
fb_dbg(info, "8 bit pseudocolor\n");
svga_wcrt_mask(par->state.vgabase, 0x50, 0x00, 0x30);
if (info->var.pixclock > 20000 ||
par->chip == CHIP_357_VIRGE_GX2 ||
par->chip == CHIP_359_VIRGE_GX2P ||
par->chip == CHIP_360_TRIO3D_1X ||
par->chip == CHIP_362_TRIO3D_2X ||
par->chip == CHIP_368_TRIO3D_2X ||
par->chip == CHIP_260_VIRGE_MX)
svga_wcrt_mask(par->state.vgabase, 0x67, 0x00, 0xF0);
else {
svga_wcrt_mask(par->state.vgabase, 0x67, 0x10, 0xF0);
multiplex = 1;
}
break;
case 4:
fb_dbg(info, "5/5/5 truecolor\n");
if (par->chip == CHIP_988_VIRGE_VX) {
if (info->var.pixclock > 20000)
svga_wcrt_mask(par->state.vgabase, 0x67, 0x20, 0xF0);
else
svga_wcrt_mask(par->state.vgabase, 0x67, 0x30, 0xF0);
} else if (par->chip == CHIP_365_TRIO3D) {
svga_wcrt_mask(par->state.vgabase, 0x50, 0x10, 0x30);
if (info->var.pixclock > 8695) {
svga_wcrt_mask(par->state.vgabase, 0x67, 0x30, 0xF0);
hmul = 2;
} else {
svga_wcrt_mask(par->state.vgabase, 0x67, 0x20, 0xF0);
multiplex = 1;
}
} else {
svga_wcrt_mask(par->state.vgabase, 0x50, 0x10, 0x30);
svga_wcrt_mask(par->state.vgabase, 0x67, 0x30, 0xF0);
if (par->chip != CHIP_357_VIRGE_GX2 &&
par->chip != CHIP_359_VIRGE_GX2P &&
par->chip != CHIP_360_TRIO3D_1X &&
par->chip != CHIP_362_TRIO3D_2X &&
par->chip != CHIP_368_TRIO3D_2X &&
par->chip != CHIP_260_VIRGE_MX)
hmul = 2;
}
break;
case 5:
fb_dbg(info, "5/6/5 truecolor\n");
if (par->chip == CHIP_988_VIRGE_VX) {
if (info->var.pixclock > 20000)
svga_wcrt_mask(par->state.vgabase, 0x67, 0x40, 0xF0);
else
svga_wcrt_mask(par->state.vgabase, 0x67, 0x50, 0xF0);
} else if (par->chip == CHIP_365_TRIO3D) {
svga_wcrt_mask(par->state.vgabase, 0x50, 0x10, 0x30);
if (info->var.pixclock > 8695) {
svga_wcrt_mask(par->state.vgabase, 0x67, 0x50, 0xF0);
hmul = 2;
} else {
svga_wcrt_mask(par->state.vgabase, 0x67, 0x40, 0xF0);
multiplex = 1;
}
} else {
svga_wcrt_mask(par->state.vgabase, 0x50, 0x10, 0x30);
svga_wcrt_mask(par->state.vgabase, 0x67, 0x50, 0xF0);
if (par->chip != CHIP_357_VIRGE_GX2 &&
par->chip != CHIP_359_VIRGE_GX2P &&
par->chip != CHIP_360_TRIO3D_1X &&
par->chip != CHIP_362_TRIO3D_2X &&
par->chip != CHIP_368_TRIO3D_2X &&
par->chip != CHIP_260_VIRGE_MX)
hmul = 2;
}
break;
case 6:
/* VIRGE VX case */
fb_dbg(info, "8/8/8 truecolor\n");
svga_wcrt_mask(par->state.vgabase, 0x67, 0xD0, 0xF0);
break;
case 7:
fb_dbg(info, "8/8/8/8 truecolor\n");
svga_wcrt_mask(par->state.vgabase, 0x50, 0x30, 0x30);
svga_wcrt_mask(par->state.vgabase, 0x67, 0xD0, 0xF0);
break;
default:
fb_err(info, "unsupported mode - bug\n");
return -EINVAL;
}
if (par->chip != CHIP_988_VIRGE_VX) {
svga_wseq_mask(par->state.vgabase, 0x15, multiplex ? 0x10 : 0x00, 0x10);
svga_wseq_mask(par->state.vgabase, 0x18, multiplex ? 0x80 : 0x00, 0x80);
}
s3_set_pixclock(info, info->var.pixclock);
svga_set_timings(par->state.vgabase, &s3_timing_regs, &(info->var), hmul, 1,
(info->var.vmode & FB_VMODE_DOUBLE) ? 2 : 1,
(info->var.vmode & FB_VMODE_INTERLACED) ? 2 : 1,
hmul, info->node);
/* Set interlaced mode start/end register */
htotal = info->var.xres + info->var.left_margin + info->var.right_margin + info->var.hsync_len;
htotal = ((htotal * hmul) / 8) - 5;
vga_wcrt(par->state.vgabase, 0x3C, (htotal + 1) / 2);
/* Set Data Transfer Position */
hsstart = ((info->var.xres + info->var.right_margin) * hmul) / 8;
/* + 2 is needed for Virge/VX, does no harm on other cards */
value = clamp((htotal + hsstart + 1) / 2 + 2, hsstart + 4, htotal + 1);
svga_wcrt_multi(par->state.vgabase, s3_dtpc_regs, value);
memset_io(info->screen_base, 0x00, screen_size);
/* Device and screen back on */
svga_wcrt_mask(par->state.vgabase, 0x17, 0x80, 0x80);
svga_wseq_mask(par->state.vgabase, 0x01, 0x00, 0x20);
return 0;
}
/* Set a colour register */
static int s3fb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
u_int transp, struct fb_info *fb)
{
switch (fb->var.bits_per_pixel) {
case 0:
case 4:
if (regno >= 16)
return -EINVAL;
if ((fb->var.bits_per_pixel == 4) &&
(fb->var.nonstd == 0)) {
outb(0xF0, VGA_PEL_MSK);
outb(regno*16, VGA_PEL_IW);
} else {
outb(0x0F, VGA_PEL_MSK);
outb(regno, VGA_PEL_IW);
}
outb(red >> 10, VGA_PEL_D);
outb(green >> 10, VGA_PEL_D);
outb(blue >> 10, VGA_PEL_D);
break;
case 8:
if (regno >= 256)
return -EINVAL;
outb(0xFF, VGA_PEL_MSK);
outb(regno, VGA_PEL_IW);
outb(red >> 10, VGA_PEL_D);
outb(green >> 10, VGA_PEL_D);
outb(blue >> 10, VGA_PEL_D);
break;
case 16:
if (regno >= 16)
return 0;
if (fb->var.green.length == 5)
((u32*)fb->pseudo_palette)[regno] = ((red & 0xF800) >> 1) |
((green & 0xF800) >> 6) | ((blue & 0xF800) >> 11);
else if (fb->var.green.length == 6)
((u32*)fb->pseudo_palette)[regno] = (red & 0xF800) |
((green & 0xFC00) >> 5) | ((blue & 0xF800) >> 11);
else return -EINVAL;
break;
case 24:
case 32:
if (regno >= 16)
return 0;
((u32*)fb->pseudo_palette)[regno] = ((red & 0xFF00) << 8) |
(green & 0xFF00) | ((blue & 0xFF00) >> 8);
break;
default:
return -EINVAL;
}
return 0;
}
/* Set the display blanking state */
static int s3fb_blank(int blank_mode, struct fb_info *info)
{
struct s3fb_info *par = info->par;
switch (blank_mode) {
case FB_BLANK_UNBLANK:
fb_dbg(info, "unblank\n");
svga_wcrt_mask(par->state.vgabase, 0x56, 0x00, 0x06);
svga_wseq_mask(par->state.vgabase, 0x01, 0x00, 0x20);
break;
case FB_BLANK_NORMAL:
fb_dbg(info, "blank\n");
svga_wcrt_mask(par->state.vgabase, 0x56, 0x00, 0x06);
svga_wseq_mask(par->state.vgabase, 0x01, 0x20, 0x20);
break;
case FB_BLANK_HSYNC_SUSPEND:
fb_dbg(info, "hsync\n");
svga_wcrt_mask(par->state.vgabase, 0x56, 0x02, 0x06);
svga_wseq_mask(par->state.vgabase, 0x01, 0x20, 0x20);
break;
case FB_BLANK_VSYNC_SUSPEND:
fb_dbg(info, "vsync\n");
svga_wcrt_mask(par->state.vgabase, 0x56, 0x04, 0x06);
svga_wseq_mask(par->state.vgabase, 0x01, 0x20, 0x20);
break;
case FB_BLANK_POWERDOWN:
fb_dbg(info, "sync down\n");
svga_wcrt_mask(par->state.vgabase, 0x56, 0x06, 0x06);
svga_wseq_mask(par->state.vgabase, 0x01, 0x20, 0x20);
break;
}
return 0;
}
/* Pan the display */
static int s3fb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
{
struct s3fb_info *par = info->par;
unsigned int offset;
/* Calculate the offset */
if (info->var.bits_per_pixel == 0) {
offset = (var->yoffset / 16) * (info->var.xres_virtual / 2)
+ (var->xoffset / 2);
offset = offset >> 2;
} else {
offset = (var->yoffset * info->fix.line_length) +
(var->xoffset * info->var.bits_per_pixel / 8);
offset = offset >> 2;
}
/* Set the offset */
svga_wcrt_multi(par->state.vgabase, s3_start_address_regs, offset);
return 0;
}
/* ------------------------------------------------------------------------- */
/* Frame buffer operations */
static struct fb_ops s3fb_ops = {
.owner = THIS_MODULE,
.fb_open = s3fb_open,
.fb_release = s3fb_release,
.fb_check_var = s3fb_check_var,
.fb_set_par = s3fb_set_par,
.fb_setcolreg = s3fb_setcolreg,
.fb_blank = s3fb_blank,
.fb_pan_display = s3fb_pan_display,
.fb_fillrect = s3fb_fillrect,
.fb_copyarea = cfb_copyarea,
.fb_imageblit = s3fb_imageblit,
.fb_get_caps = svga_get_caps,
};
/* ------------------------------------------------------------------------- */
static int s3_identification(struct s3fb_info *par)
{
int chip = par->chip;
if (chip == CHIP_XXX_TRIO) {
u8 cr30 = vga_rcrt(par->state.vgabase, 0x30);
u8 cr2e = vga_rcrt(par->state.vgabase, 0x2e);
u8 cr2f = vga_rcrt(par->state.vgabase, 0x2f);
if ((cr30 == 0xE0) || (cr30 == 0xE1)) {
if (cr2e == 0x10)
return CHIP_732_TRIO32;
if (cr2e == 0x11) {
if (! (cr2f & 0x40))
return CHIP_764_TRIO64;
else
return CHIP_765_TRIO64VP;
}
}
}
if (chip == CHIP_XXX_TRIO64V2_DXGX) {
u8 cr6f = vga_rcrt(par->state.vgabase, 0x6f);
if (! (cr6f & 0x01))
return CHIP_775_TRIO64V2_DX;
else
return CHIP_785_TRIO64V2_GX;
}
if (chip == CHIP_XXX_VIRGE_DXGX) {
u8 cr6f = vga_rcrt(par->state.vgabase, 0x6f);
if (! (cr6f & 0x01))
return CHIP_375_VIRGE_DX;
else
return CHIP_385_VIRGE_GX;
}
if (chip == CHIP_36X_TRIO3D_1X_2X) {
switch (vga_rcrt(par->state.vgabase, 0x2f)) {
case 0x00:
return CHIP_360_TRIO3D_1X;
case 0x01:
return CHIP_362_TRIO3D_2X;
case 0x02:
return CHIP_368_TRIO3D_2X;
}
}
return CHIP_UNKNOWN;
}
/* PCI probe */
static int s3_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
{
struct pci_bus_region bus_reg;
struct resource vga_res;
struct fb_info *info;
struct s3fb_info *par;
int rc;
u8 regval, cr38, cr39;
bool found = false;
/* Ignore secondary VGA device because there is no VGA arbitration */
if (! svga_primary_device(dev)) {
dev_info(&(dev->dev), "ignoring secondary device\n");
return -ENODEV;
}
/* Allocate and fill driver data structure */
info = framebuffer_alloc(sizeof(struct s3fb_info), &(dev->dev));
if (!info) {
dev_err(&(dev->dev), "cannot allocate memory\n");
return -ENOMEM;
}
par = info->par;
mutex_init(&par->open_lock);
info->flags = FBINFO_PARTIAL_PAN_OK | FBINFO_HWACCEL_YPAN;
info->fbops = &s3fb_ops;
/* Prepare PCI device */
rc = pci_enable_device(dev);
if (rc < 0) {
dev_err(info->device, "cannot enable PCI device\n");
goto err_enable_device;
}
rc = pci_request_regions(dev, "s3fb");
if (rc < 0) {
dev_err(info->device, "cannot reserve framebuffer region\n");
goto err_request_regions;
}
info->fix.smem_start = pci_resource_start(dev, 0);
info->fix.smem_len = pci_resource_len(dev, 0);
/* Map physical IO memory address into kernel space */
info->screen_base = pci_iomap_wc(dev, 0, 0);
if (! info->screen_base) {
rc = -ENOMEM;
dev_err(info->device, "iomap for framebuffer failed\n");
goto err_iomap;
}
bus_reg.start = 0;
bus_reg.end = 64 * 1024;
vga_res.flags = IORESOURCE_IO;
pcibios_bus_to_resource(dev->bus, &vga_res, &bus_reg);
par->state.vgabase = (void __iomem *) (unsigned long) vga_res.start;
/* Unlock regs */
cr38 = vga_rcrt(par->state.vgabase, 0x38);
cr39 = vga_rcrt(par->state.vgabase, 0x39);
vga_wseq(par->state.vgabase, 0x08, 0x06);
vga_wcrt(par->state.vgabase, 0x38, 0x48);
vga_wcrt(par->state.vgabase, 0x39, 0xA5);
/* Identify chip type */
par->chip = id->driver_data & CHIP_MASK;
par->rev = vga_rcrt(par->state.vgabase, 0x2f);
if (par->chip & CHIP_UNDECIDED_FLAG)
par->chip = s3_identification(par);
/* Find how many physical memory there is on card */
/* 0x36 register is accessible even if other registers are locked */
regval = vga_rcrt(par->state.vgabase, 0x36);
if (par->chip == CHIP_360_TRIO3D_1X ||
par->chip == CHIP_362_TRIO3D_2X ||
par->chip == CHIP_368_TRIO3D_2X ||
par->chip == CHIP_365_TRIO3D) {
switch ((regval & 0xE0) >> 5) {
case 0: /* 8MB -- only 4MB usable for display */
case 1: /* 4MB with 32-bit bus */
case 2: /* 4MB */
info->screen_size = 4 << 20;
break;
case 4: /* 2MB on 365 Trio3D */
case 6: /* 2MB */
info->screen_size = 2 << 20;
break;
}
} else if (par->chip == CHIP_357_VIRGE_GX2 ||
par->chip == CHIP_359_VIRGE_GX2P ||
par->chip == CHIP_260_VIRGE_MX) {
switch ((regval & 0xC0) >> 6) {
case 1: /* 4MB */
info->screen_size = 4 << 20;
break;
case 3: /* 2MB */
info->screen_size = 2 << 20;
break;
}
} else if (par->chip == CHIP_988_VIRGE_VX) {
switch ((regval & 0x60) >> 5) {
case 0: /* 2MB */
info->screen_size = 2 << 20;
break;
case 1: /* 4MB */
info->screen_size = 4 << 20;
break;
case 2: /* 6MB */
info->screen_size = 6 << 20;
break;
case 3: /* 8MB */
info->screen_size = 8 << 20;
break;
}
/* off-screen memory */
regval = vga_rcrt(par->state.vgabase, 0x37);
switch ((regval & 0x60) >> 5) {
case 1: /* 4MB */
info->screen_size -= 4 << 20;
break;
case 2: /* 2MB */
info->screen_size -= 2 << 20;
break;
}
} else
info->screen_size = s3_memsizes[regval >> 5] << 10;
info->fix.smem_len = info->screen_size;
/* Find MCLK frequency */
regval = vga_rseq(par->state.vgabase, 0x10);
par->mclk_freq = ((vga_rseq(par->state.vgabase, 0x11) + 2) * 14318) / ((regval & 0x1F) + 2);
par->mclk_freq = par->mclk_freq >> (regval >> 5);
/* Restore locks */
vga_wcrt(par->state.vgabase, 0x38, cr38);
vga_wcrt(par->state.vgabase, 0x39, cr39);
strcpy(info->fix.id, s3_names [par->chip]);
info->fix.mmio_start = 0;
info->fix.mmio_len = 0;
info->fix.type = FB_TYPE_PACKED_PIXELS;
info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
info->fix.ypanstep = 0;
info->fix.accel = FB_ACCEL_NONE;
info->pseudo_palette = (void*) (par->pseudo_palette);
info->var.bits_per_pixel = 8;
#ifdef CONFIG_FB_S3_DDC
/* Enable MMIO if needed */
if (s3fb_ddc_needs_mmio(par->chip)) {
par->mmio = ioremap(info->fix.smem_start + MMIO_OFFSET, MMIO_SIZE);
if (par->mmio)
svga_wcrt_mask(par->state.vgabase, 0x53, 0x08, 0x08); /* enable MMIO */
else
dev_err(info->device, "unable to map MMIO at 0x%lx, disabling DDC",
info->fix.smem_start + MMIO_OFFSET);
}
if (!s3fb_ddc_needs_mmio(par->chip) || par->mmio)
if (s3fb_setup_ddc_bus(info) == 0) {
u8 *edid = fb_ddc_read(&par->ddc_adapter);
par->ddc_registered = true;
if (edid) {
fb_edid_to_monspecs(edid, &info->monspecs);
kfree(edid);
if (!info->monspecs.modedb)
dev_err(info->device, "error getting mode database\n");
else {
const struct fb_videomode *m;
fb_videomode_to_modelist(info->monspecs.modedb,
info->monspecs.modedb_len,
&info->modelist);
m = fb_find_best_display(&info->monspecs, &info->modelist);
if (m) {
fb_videomode_to_var(&info->var, m);
/* fill all other info->var's fields */
if (s3fb_check_var(&info->var, info) == 0)
found = true;
}
}
}
}
#endif
if (!mode_option && !found)
mode_option = "640x480-8@60";
/* Prepare startup mode */
if (mode_option) {
rc = fb_find_mode(&info->var, info, mode_option,
info->monspecs.modedb, info->monspecs.modedb_len,
NULL, info->var.bits_per_pixel);
if (!rc || rc == 4) {
rc = -EINVAL;
dev_err(info->device, "mode %s not found\n", mode_option);
fb_destroy_modedb(info->monspecs.modedb);
info->monspecs.modedb = NULL;
goto err_find_mode;
}
}
fb_destroy_modedb(info->monspecs.modedb);
info->monspecs.modedb = NULL;
/* maximize virtual vertical size for fast scrolling */
info->var.yres_virtual = info->fix.smem_len * 8 /
(info->var.bits_per_pixel * info->var.xres_virtual);
if (info->var.yres_virtual < info->var.yres) {
dev_err(info->device, "virtual vertical size smaller than real\n");
rc = -EINVAL;
goto err_find_mode;
}
rc = fb_alloc_cmap(&info->cmap, 256, 0);
if (rc < 0) {
dev_err(info->device, "cannot allocate colormap\n");
goto err_alloc_cmap;
}
rc = register_framebuffer(info);
if (rc < 0) {
dev_err(info->device, "cannot register framebuffer\n");
goto err_reg_fb;
}
fb_info(info, "%s on %s, %d MB RAM, %d MHz MCLK\n",
info->fix.id, pci_name(dev),
info->fix.smem_len >> 20, (par->mclk_freq + 500) / 1000);
if (par->chip == CHIP_UNKNOWN)
fb_info(info, "unknown chip, CR2D=%x, CR2E=%x, CRT2F=%x, CRT30=%x\n",
vga_rcrt(par->state.vgabase, 0x2d),
vga_rcrt(par->state.vgabase, 0x2e),
vga_rcrt(par->state.vgabase, 0x2f),
vga_rcrt(par->state.vgabase, 0x30));
/* Record a reference to the driver data */
pci_set_drvdata(dev, info);
if (mtrr)
par->wc_cookie = arch_phys_wc_add(info->fix.smem_start,
info->fix.smem_len);
return 0;
/* Error handling */
err_reg_fb:
fb_dealloc_cmap(&info->cmap);
err_alloc_cmap:
err_find_mode:
#ifdef CONFIG_FB_S3_DDC
if (par->ddc_registered)
i2c_del_adapter(&par->ddc_adapter);
if (par->mmio)
iounmap(par->mmio);
#endif
pci_iounmap(dev, info->screen_base);
err_iomap:
pci_release_regions(dev);
err_request_regions:
/* pci_disable_device(dev); */
err_enable_device:
framebuffer_release(info);
return rc;
}
/* PCI remove */
static void s3_pci_remove(struct pci_dev *dev)
{
struct fb_info *info = pci_get_drvdata(dev);
struct s3fb_info __maybe_unused *par;
if (info) {
par = info->par;
arch_phys_wc_del(par->wc_cookie);
unregister_framebuffer(info);
fb_dealloc_cmap(&info->cmap);
#ifdef CONFIG_FB_S3_DDC
if (par->ddc_registered)
i2c_del_adapter(&par->ddc_adapter);
if (par->mmio)
iounmap(par->mmio);
#endif
pci_iounmap(dev, info->screen_base);
pci_release_regions(dev);
/* pci_disable_device(dev); */
framebuffer_release(info);
}
}
/* PCI suspend */
static int s3_pci_suspend(struct pci_dev* dev, pm_message_t state)
{
struct fb_info *info = pci_get_drvdata(dev);
struct s3fb_info *par = info->par;
dev_info(info->device, "suspend\n");
console_lock();
mutex_lock(&(par->open_lock));
if ((state.event == PM_EVENT_FREEZE) || (par->ref_count == 0)) {
mutex_unlock(&(par->open_lock));
console_unlock();
return 0;
}
fb_set_suspend(info, 1);
pci_save_state(dev);
pci_disable_device(dev);
pci_set_power_state(dev, pci_choose_state(dev, state));
mutex_unlock(&(par->open_lock));
console_unlock();
return 0;
}
/* PCI resume */
static int s3_pci_resume(struct pci_dev* dev)
{
struct fb_info *info = pci_get_drvdata(dev);
struct s3fb_info *par = info->par;
int err;
dev_info(info->device, "resume\n");
console_lock();
mutex_lock(&(par->open_lock));
if (par->ref_count == 0) {
mutex_unlock(&(par->open_lock));
console_unlock();
return 0;
}
pci_set_power_state(dev, PCI_D0);
pci_restore_state(dev);
err = pci_enable_device(dev);
if (err) {
mutex_unlock(&(par->open_lock));
console_unlock();
dev_err(info->device, "error %d enabling device for resume\n", err);
return err;
}
pci_set_master(dev);
s3fb_set_par(info);
fb_set_suspend(info, 0);
mutex_unlock(&(par->open_lock));
console_unlock();
return 0;
}
/* List of boards that we are trying to support */
static struct pci_device_id s3_devices[] = {
{PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8810), .driver_data = CHIP_XXX_TRIO},
{PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8811), .driver_data = CHIP_XXX_TRIO},
{PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8812), .driver_data = CHIP_M65_AURORA64VP},
{PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8814), .driver_data = CHIP_767_TRIO64UVP},
{PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8901), .driver_data = CHIP_XXX_TRIO64V2_DXGX},
{PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8902), .driver_data = CHIP_551_PLATO_PX},
{PCI_DEVICE(PCI_VENDOR_ID_S3, 0x5631), .driver_data = CHIP_325_VIRGE},
{PCI_DEVICE(PCI_VENDOR_ID_S3, 0x883D), .driver_data = CHIP_988_VIRGE_VX},
{PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8A01), .driver_data = CHIP_XXX_VIRGE_DXGX},
{PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8A10), .driver_data = CHIP_357_VIRGE_GX2},
{PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8A11), .driver_data = CHIP_359_VIRGE_GX2P},
{PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8A12), .driver_data = CHIP_359_VIRGE_GX2P},
{PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8A13), .driver_data = CHIP_36X_TRIO3D_1X_2X},
{PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8904), .driver_data = CHIP_365_TRIO3D},
{PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8C01), .driver_data = CHIP_260_VIRGE_MX},
{0, 0, 0, 0, 0, 0, 0}
};
MODULE_DEVICE_TABLE(pci, s3_devices);
static struct pci_driver s3fb_pci_driver = {
.name = "s3fb",
.id_table = s3_devices,
.probe = s3_pci_probe,
.remove = s3_pci_remove,
.suspend = s3_pci_suspend,
.resume = s3_pci_resume,
};
/* Parse user specified options */
#ifndef MODULE
static int __init s3fb_setup(char *options)
{
char *opt;
if (!options || !*options)
return 0;
while ((opt = strsep(&options, ",")) != NULL) {
if (!*opt)
continue;
else if (!strncmp(opt, "mtrr:", 5))
mtrr = simple_strtoul(opt + 5, NULL, 0);
else if (!strncmp(opt, "fasttext:", 9))
fasttext = simple_strtoul(opt + 9, NULL, 0);
else
mode_option = opt;
}
return 0;
}
#endif
/* Cleanup */
static void __exit s3fb_cleanup(void)
{
pr_debug("s3fb: cleaning up\n");
pci_unregister_driver(&s3fb_pci_driver);
}
/* Driver Initialisation */
static int __init s3fb_init(void)
{
#ifndef MODULE
char *option = NULL;
if (fb_get_options("s3fb", &option))
return -ENODEV;
s3fb_setup(option);
#endif
pr_debug("s3fb: initializing\n");
return pci_register_driver(&s3fb_pci_driver);
}
/* ------------------------------------------------------------------------- */
/* Modularization */
module_init(s3fb_init);
module_exit(s3fb_cleanup);