#include <linux/tty.h>
#include <linux/fb.h>
#include <linux/module.h>
+#include <video/edid.h>
#ifdef CONFIG_PPC_OF
#include <linux/pci.h>
#include <asm/prom.h>
#include <asm/pci-bridge.h>
#endif
-#include <video/edid.h>
#include "edid.h"
/*
#endif
#define FBMON_FIX_HEADER 1
+#define FBMON_FIX_INPUT 2
#ifdef CONFIG_FB_MODE_HELPERS
struct broken_edid {
static struct broken_edid brokendb[] = {
/* DEC FR-PCXAV-YZ */
- { .manufacturer = "DEC",
- .model = 0x073a,
- .fix = FBMON_FIX_HEADER,
+ {
+ .manufacturer = "DEC",
+ .model = 0x073a,
+ .fix = FBMON_FIX_HEADER,
+ },
+ /* ViewSonic PF775a */
+ {
+ .manufacturer = "VSC",
+ .model = 0x5a44,
+ .fix = FBMON_FIX_INPUT,
},
};
-const unsigned char edid_v1_header[] = { 0x00, 0xff, 0xff, 0xff,
+static const unsigned char edid_v1_header[] = { 0x00, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0x00
};
-const unsigned char edid_v1_descriptor_flag[] = { 0x00, 0x00 };
static void copy_string(unsigned char *c, unsigned char *s)
{
while (i-- && (*--s == 0x20)) *s = 0;
}
-static void fix_broken_edid(unsigned char *edid)
+static int check_edid(unsigned char *edid)
{
unsigned char *block = edid + ID_MANUFACTURER_NAME, manufacturer[4];
- u32 model, i;
+ unsigned char *b;
+ u32 model;
+ int i, fix = 0, ret = 0;
manufacturer[0] = ((block[0] & 0x7c) >> 2) + '@';
manufacturer[1] = ((block[0] & 0x03) << 3) +
for (i = 0; i < ARRAY_SIZE(brokendb); i++) {
if (!strncmp(manufacturer, brokendb[i].manufacturer, 4) &&
brokendb[i].model == model) {
- switch (brokendb[i].fix) {
- case FBMON_FIX_HEADER:
- printk("fbmon: The EDID header of "
- "Manufacturer: %s Model: 0x%x is "
- "known to be broken,\n"
- "fbmon: trying a header "
- "reconstruct\n", manufacturer, model);
- memcpy(edid, edid_v1_header, 8);
- break;
- }
+ printk("fbmon: The EDID Block of "
+ "Manufacturer: %s Model: 0x%x is known to "
+ "be broken,\n", manufacturer, model);
+ fix = brokendb[i].fix;
+ break;
+ }
+ }
+
+ switch (fix) {
+ case FBMON_FIX_HEADER:
+ for (i = 0; i < 8; i++) {
+ if (edid[i] != edid_v1_header[i])
+ ret = fix;
}
+ break;
+ case FBMON_FIX_INPUT:
+ b = edid + EDID_STRUCT_DISPLAY;
+ /* Only if display is GTF capable will
+ the input type be reset to analog */
+ if (b[4] & 0x01 && b[0] & 0x80)
+ ret = fix;
+ break;
+ }
+
+ return ret;
+}
+
+static void fix_edid(unsigned char *edid, int fix)
+{
+ unsigned char *b;
+
+ switch (fix) {
+ case FBMON_FIX_HEADER:
+ printk("fbmon: trying a header reconstruct\n");
+ memcpy(edid, edid_v1_header, 8);
+ break;
+ case FBMON_FIX_INPUT:
+ printk("fbmon: trying to fix input type\n");
+ b = edid + EDID_STRUCT_DISPLAY;
+ b[0] &= ~0x80;
+ edid[127] += 0x80;
}
}
static int edid_checksum(unsigned char *edid)
{
unsigned char i, csum = 0, all_null = 0;
+ int err = 0, fix = check_edid(edid);
+
+ if (fix)
+ fix_edid(edid, fix);
for (i = 0; i < EDID_LENGTH; i++) {
csum += edid[i];
if (csum == 0x00 && all_null) {
/* checksum passed, everything's good */
- return 1;
+ err = 1;
}
- fix_broken_edid(edid);
- csum = all_null = 0;
- for (i = 0; i < EDID_LENGTH; i++) {
- csum += edid[i];
- all_null |= edid[i];
- }
- if (csum != 0x00 || !all_null) {
- printk("EDID checksum failed, aborting\n");
- return 0;
- }
- return 1;
+ return err;
}
static int edid_check_header(unsigned char *edid)
{
- int i, fix = 0;
+ int i, err = 1, fix = check_edid(edid);
- for (i = 0; i < 8; i++) {
- if (edid[i] != edid_v1_header[i])
- fix = 1;
- }
- if (!fix)
- return 1;
+ if (fix)
+ fix_edid(edid, fix);
- fix_broken_edid(edid);
for (i = 0; i < 8; i++) {
if (edid[i] != edid_v1_header[i])
- return 0;
+ err = 0;
}
- return 1;
+
+ return err;
}
static void parse_vendor_block(unsigned char *block, struct fb_monspecs *specs)
return 0;
}
-static void calc_mode_timings(int xres, int yres, int refresh, struct fb_videomode *mode)
+static void calc_mode_timings(int xres, int yres, int refresh,
+ struct fb_videomode *mode)
{
- struct fb_var_screeninfo var;
- struct fb_info info;
+ struct fb_var_screeninfo *var;
- var.xres = xres;
- var.yres = yres;
- fb_get_mode(FB_VSYNCTIMINGS | FB_IGNOREMON,
- refresh, &var, &info);
- mode->xres = xres;
- mode->yres = yres;
- mode->pixclock = var.pixclock;
- mode->refresh = refresh;
- mode->left_margin = var.left_margin;
- mode->right_margin = var.right_margin;
- mode->upper_margin = var.upper_margin;
- mode->lower_margin = var.lower_margin;
- mode->hsync_len = var.hsync_len;
- mode->vsync_len = var.vsync_len;
- mode->vmode = 0;
- mode->sync = 0;
+ var = kzalloc(sizeof(struct fb_var_screeninfo), GFP_KERNEL);
+
+ if (var) {
+ var->xres = xres;
+ var->yres = yres;
+ fb_get_mode(FB_VSYNCTIMINGS | FB_IGNOREMON,
+ refresh, var, NULL);
+ mode->xres = xres;
+ mode->yres = yres;
+ mode->pixclock = var->pixclock;
+ mode->refresh = refresh;
+ mode->left_margin = var->left_margin;
+ mode->right_margin = var->right_margin;
+ mode->upper_margin = var->upper_margin;
+ mode->lower_margin = var->lower_margin;
+ mode->hsync_len = var->hsync_len;
+ mode->vsync_len = var->vsync_len;
+ mode->vmode = 0;
+ mode->sync = 0;
+ kfree(var);
+ }
}
static int get_est_timing(unsigned char *block, struct fb_videomode *mode)
* This function builds a mode database using the contents of the EDID
* data
*/
-struct fb_videomode *fb_create_modedb(unsigned char *edid, int *dbsize)
+static struct fb_videomode *fb_create_modedb(unsigned char *edid, int *dbsize)
{
struct fb_videomode *mode, *m;
unsigned char *block;
int num = 0, i;
- mode = kmalloc(50 * sizeof(struct fb_videomode), GFP_KERNEL);
+ mode = kzalloc(50 * sizeof(struct fb_videomode), GFP_KERNEL);
if (mode == NULL)
return NULL;
- memset(mode, 0, 50 * sizeof(struct fb_videomode));
if (edid == NULL || !edid_checksum(edid) ||
!edid_check_header(edid)) {
*dbsize = 0;
- DPRINTK(" Supported VESA Modes\n");
- block = edid + ESTABLISHED_TIMING_1;
- num += get_est_timing(block, &mode[num]);
-
- DPRINTK(" Standard Timings\n");
- block = edid + STD_TIMING_DESCRIPTIONS_START;
- for (i = 0; i < STD_TIMING; i++, block += STD_TIMING_DESCRIPTION_SIZE)
- num += get_std_timing(block, &mode[num]);
-
DPRINTK(" Detailed Timings\n");
block = edid + DETAILED_TIMING_DESCRIPTIONS_START;
for (i = 0; i < 4; i++, block+= DETAILED_TIMING_DESCRIPTION_SIZE) {
int first = 1;
- if (block[0] == 0x00 && block[1] == 0x00) {
- if (block[3] == 0xfa) {
- num += get_dst_timing(block + 5, &mode[num]);
- }
- } else {
+ if (!(block[0] == 0x00 && block[1] == 0x00)) {
get_detailed_timing(block, &mode[num]);
if (first) {
mode[num].flag |= FB_MODE_IS_FIRST;
num++;
}
}
+
+ DPRINTK(" Supported VESA Modes\n");
+ block = edid + ESTABLISHED_TIMING_1;
+ num += get_est_timing(block, &mode[num]);
+
+ DPRINTK(" Standard Timings\n");
+ block = edid + STD_TIMING_DESCRIPTIONS_START;
+ for (i = 0; i < STD_TIMING; i++, block += STD_TIMING_DESCRIPTION_SIZE)
+ num += get_std_timing(block, &mode[num]);
+
+ block = edid + DETAILED_TIMING_DESCRIPTIONS_START;
+ for (i = 0; i < 4; i++, block+= DETAILED_TIMING_DESCRIPTION_SIZE) {
+ if (block[0] == 0x00 && block[1] == 0x00 && block[3] == 0xfa)
+ num += get_dst_timing(block + 5, &mode[num]);
+ }
/* Yikes, EDID data is totally useless */
if (!num) {
*/
void fb_destroy_modedb(struct fb_videomode *modedb)
{
- if (modedb)
- kfree(modedb);
+ kfree(modedb);
}
-int fb_get_monitor_limits(unsigned char *edid, struct fb_monspecs *specs)
+static int fb_get_monitor_limits(unsigned char *edid, struct fb_monspecs *specs)
{
int i, retval = 1;
unsigned char *block;
fb_get_monitor_limits(edid, specs);
- c = (block[0] & 0x80) >> 7;
+ c = block[0] & 0x80;
specs->input = 0;
if (c) {
specs->input |= FB_DISP_DDI;
DPRINTK("0.700V/0.000V");
specs->input |= FB_DISP_ANA_700_000;
break;
- default:
- DPRINTK("unknown");
- specs->input |= FB_DISP_UNKNOWN;
}
}
DPRINTK("\n Sync: ");
- c = (block[0] & 0x10) >> 4;
+ c = block[0] & 0x10;
if (c)
DPRINTK(" Configurable signal level\n");
c = block[0] & 0x0f;
void fb_edid_to_monspecs(unsigned char *edid, struct fb_monspecs *specs)
{
unsigned char *block;
- int i;
+ int i, found = 0;
if (edid == NULL)
return;
get_monspecs(edid, specs);
specs->modedb = fb_create_modedb(edid, &specs->modedb_len);
- DPRINTK("========================================\n");
-}
-char *get_EDID_from_firmware(struct device *dev)
-{
- unsigned char *pedid = NULL;
+ /*
+ * Workaround for buggy EDIDs that sets that the first
+ * detailed timing is preferred but has not detailed
+ * timing specified
+ */
+ for (i = 0; i < specs->modedb_len; i++) {
+ if (specs->modedb[i].flag & FB_MODE_IS_DETAILED) {
+ found = 1;
+ break;
+ }
+ }
-#if defined(CONFIG_EDID_FIRMWARE) && defined(CONFIG_X86)
- pedid = edid_info.dummy;
- if (!pedid)
- return NULL;
-#endif
- return pedid;
+ if (!found)
+ specs->misc &= ~FB_MISC_1ST_DETAIL;
+
+ DPRINTK("========================================\n");
}
/*
*/
int fb_get_mode(int flags, u32 val, struct fb_var_screeninfo *var, struct fb_info *info)
{
- struct __fb_timings timings;
+ struct __fb_timings *timings;
u32 interlace = 1, dscan = 1;
- u32 hfmin, hfmax, vfmin, vfmax, dclkmin, dclkmax;
+ u32 hfmin, hfmax, vfmin, vfmax, dclkmin, dclkmax, err = 0;
+
+
+ timings = kzalloc(sizeof(struct __fb_timings), GFP_KERNEL);
+
+ if (!timings)
+ return -ENOMEM;
/*
* If monspecs are invalid, use values that are enough
* for 640x480@60
*/
- if (!info->monspecs.hfmax || !info->monspecs.vfmax ||
+ if (!info || !info->monspecs.hfmax || !info->monspecs.vfmax ||
!info->monspecs.dclkmax ||
info->monspecs.hfmax < info->monspecs.hfmin ||
info->monspecs.vfmax < info->monspecs.vfmin ||
dclkmax = info->monspecs.dclkmax;
}
- memset(&timings, 0, sizeof(struct __fb_timings));
- timings.hactive = var->xres;
- timings.vactive = var->yres;
+ timings->hactive = var->xres;
+ timings->vactive = var->yres;
if (var->vmode & FB_VMODE_INTERLACED) {
- timings.vactive /= 2;
+ timings->vactive /= 2;
interlace = 2;
}
if (var->vmode & FB_VMODE_DOUBLE) {
- timings.vactive *= 2;
+ timings->vactive *= 2;
dscan = 2;
}
switch (flags & ~FB_IGNOREMON) {
case FB_MAXTIMINGS: /* maximize refresh rate */
- timings.hfreq = hfmax;
- fb_timings_hfreq(&timings);
- if (timings.vfreq > vfmax) {
- timings.vfreq = vfmax;
- fb_timings_vfreq(&timings);
+ timings->hfreq = hfmax;
+ fb_timings_hfreq(timings);
+ if (timings->vfreq > vfmax) {
+ timings->vfreq = vfmax;
+ fb_timings_vfreq(timings);
}
- if (timings.dclk > dclkmax) {
- timings.dclk = dclkmax;
- fb_timings_dclk(&timings);
+ if (timings->dclk > dclkmax) {
+ timings->dclk = dclkmax;
+ fb_timings_dclk(timings);
}
break;
case FB_VSYNCTIMINGS: /* vrefresh driven */
- timings.vfreq = val;
- fb_timings_vfreq(&timings);
+ timings->vfreq = val;
+ fb_timings_vfreq(timings);
break;
case FB_HSYNCTIMINGS: /* hsync driven */
- timings.hfreq = val;
- fb_timings_hfreq(&timings);
+ timings->hfreq = val;
+ fb_timings_hfreq(timings);
break;
case FB_DCLKTIMINGS: /* pixelclock driven */
- timings.dclk = PICOS2KHZ(val) * 1000;
- fb_timings_dclk(&timings);
+ timings->dclk = PICOS2KHZ(val) * 1000;
+ fb_timings_dclk(timings);
break;
default:
- return -EINVAL;
+ err = -EINVAL;
}
- if (!(flags & FB_IGNOREMON) &&
- (timings.vfreq < vfmin || timings.vfreq > vfmax ||
- timings.hfreq < hfmin || timings.hfreq > hfmax ||
- timings.dclk < dclkmin || timings.dclk > dclkmax))
- return -EINVAL;
-
- var->pixclock = KHZ2PICOS(timings.dclk/1000);
- var->hsync_len = (timings.htotal * 8)/100;
- var->right_margin = (timings.hblank/2) - var->hsync_len;
- var->left_margin = timings.hblank - var->right_margin - var->hsync_len;
-
- var->vsync_len = (3 * interlace)/dscan;
- var->lower_margin = (1 * interlace)/dscan;
- var->upper_margin = (timings.vblank * interlace)/dscan -
- (var->vsync_len + var->lower_margin);
+ if (err || (!(flags & FB_IGNOREMON) &&
+ (timings->vfreq < vfmin || timings->vfreq > vfmax ||
+ timings->hfreq < hfmin || timings->hfreq > hfmax ||
+ timings->dclk < dclkmin || timings->dclk > dclkmax))) {
+ err = -EINVAL;
+ } else {
+ var->pixclock = KHZ2PICOS(timings->dclk/1000);
+ var->hsync_len = (timings->htotal * 8)/100;
+ var->right_margin = (timings->hblank/2) - var->hsync_len;
+ var->left_margin = timings->hblank - var->right_margin -
+ var->hsync_len;
+ var->vsync_len = (3 * interlace)/dscan;
+ var->lower_margin = (1 * interlace)/dscan;
+ var->upper_margin = (timings->vblank * interlace)/dscan -
+ (var->vsync_len + var->lower_margin);
+ }
- return 0;
+ kfree(timings);
+ return err;
}
#else
int fb_parse_edid(unsigned char *edid, struct fb_var_screeninfo *var)
{
specs = NULL;
}
-char *get_EDID_from_firmware(struct device *dev)
-{
- return NULL;
-}
-struct fb_videomode *fb_create_modedb(unsigned char *edid, int *dbsize)
-{
- return NULL;
-}
void fb_destroy_modedb(struct fb_videomode *modedb)
{
}
-int fb_get_monitor_limits(unsigned char *edid, struct fb_monspecs *specs)
-{
- return 1;
-}
int fb_get_mode(int flags, u32 val, struct fb_var_screeninfo *var,
struct fb_info *info)
{
vtotal *= 2;
hfreq = pixclock/htotal;
+ hfreq = (hfreq + 500) / 1000 * 1000;
+
vfreq = hfreq/vtotal;
return (vfreq < vfmin || vfreq > vfmax ||
-EINVAL : 0;
}
+#if defined(CONFIG_FB_FIRMWARE_EDID) && defined(__i386__)
+#include <linux/pci.h>
+
+/*
+ * We need to ensure that the EDID block is only returned for
+ * the primary graphics adapter.
+ */
+
+const unsigned char *fb_firmware_edid(struct device *device)
+{
+ struct pci_dev *dev = NULL;
+ struct resource *res = NULL;
+ unsigned char *edid = NULL;
+
+ if (device)
+ dev = to_pci_dev(device);
+
+ if (dev)
+ res = &dev->resource[PCI_ROM_RESOURCE];
+
+ if (res && res->flags & IORESOURCE_ROM_SHADOW)
+ edid = edid_info.dummy;
+
+ return edid;
+}
+#else
+const unsigned char *fb_firmware_edid(struct device *device)
+{
+ return NULL;
+}
+#endif
+EXPORT_SYMBOL(fb_firmware_edid);
+
EXPORT_SYMBOL(fb_parse_edid);
EXPORT_SYMBOL(fb_edid_to_monspecs);
-EXPORT_SYMBOL(get_EDID_from_firmware);
-
EXPORT_SYMBOL(fb_get_mode);
EXPORT_SYMBOL(fb_validate_mode);
-EXPORT_SYMBOL(fb_create_modedb);
EXPORT_SYMBOL(fb_destroy_modedb);
-EXPORT_SYMBOL(fb_get_monitor_limits);
git://git.onelab.eu / linux-2.6.git / blobdiff