Commit 281285ec authored by Chris Wilson's avatar Chris Wilson 🤔

bios: Parse SDVO panel DTDs

Signed-off-by: Chris Wilson's avatarChris Wilson <chris@chris-wilson.co.uk>
parent afaf5ef2
......@@ -336,6 +336,33 @@ struct lvds_dvo_timing {
uint8_t v_border;
uint8_t flags;
} __attribute__ ((packed));
struct lvds_dvo_timing2 {
uint16_t clock; /**< In 10khz */
uint8_t hactive_lo;
uint8_t hblank_lo;
uint8_t hblank_hi:4;
uint8_t hactive_hi:4;
uint8_t vactive_lo;
uint8_t vblank_lo;
uint8_t vblank_hi:4;
uint8_t vactive_hi:4;
uint8_t hsync_off_lo;
uint8_t hsync_pulse_width;
uint8_t vsync_pulse_width:4;
uint8_t vsync_off:4;
uint8_t rsvd0:6;
uint8_t hsync_off_hi:2;
uint8_t h_image;
uint8_t v_image;
uint8_t max_hv;
uint8_t h_border;
uint8_t v_border;
uint8_t rsvd1:3;
uint8_t digital:2;
uint8_t vsync_positive:1;
uint8_t hsync_positive:1;
uint8_t rsvd2:1;
} __attribute__((packed));
struct lvds_pnp_id {
uint16_t mfg_name;
......
......@@ -51,20 +51,15 @@ static uint32_t devid;
#define _V_BLANK(x) (x[6] + ((x[7] & 0x0F) << 8))
#define _PIXEL_CLOCK(x) (x[0] + (x[1] << 8)) * 10000
/* Make a fake pI830 so we can easily pull i830_bios.c code in here. */
struct _fake_i830 {
uint8_t *VBIOS;
};
struct _fake_i830 I830;
struct _fake_i830 *pI830 = &I830;
uint8_t *VBIOS;
#define INTEL_BIOS_8(_addr) (pI830->VBIOS[_addr])
#define INTEL_BIOS_16(_addr) (pI830->VBIOS[_addr] | \
(pI830->VBIOS[_addr + 1] << 8))
#define INTEL_BIOS_32(_addr) (pI830->VBIOS[_addr] | \
(pI830->VBIOS[_addr + 1] << 8) | \
(pI830->VBIOS[_addr + 2] << 16) | \
(pI830->VBIOS[_addr + 3] << 24))
#define INTEL_BIOS_8(_addr) (VBIOS[_addr])
#define INTEL_BIOS_16(_addr) (VBIOS[_addr] | \
(VBIOS[_addr + 1] << 8))
#define INTEL_BIOS_32(_addr) (VBIOS[_addr] | \
(VBIOS[_addr + 1] << 8) | \
(VBIOS[_addr + 2] << 16) | \
(VBIOS[_addr + 3] << 24))
#define YESNO(val) ((val) ? "yes" : "no")
......@@ -727,6 +722,91 @@ static void dump_edp(void)
free(block);
}
static void
print_detail_timing_data(struct lvds_dvo_timing2 *dvo_timing)
{
int display, sync_start, sync_end, total;
display = (dvo_timing->hactive_hi << 8) | dvo_timing->hactive_lo;
sync_start = display +
((dvo_timing->hsync_off_hi << 8) | dvo_timing->hsync_off_lo);
sync_end = sync_start + dvo_timing->hsync_pulse_width;
total = display +
((dvo_timing->hblank_hi << 8) | dvo_timing->hblank_lo);
printf("\thdisplay: %d\n", display);
printf("\thsync [%d, %d] %s\n", sync_start, sync_end,
dvo_timing->hsync_positive ? "+sync" : "-sync");
printf("\thtotal: %d\n", total);
display = (dvo_timing->vactive_hi << 8) | dvo_timing->vactive_lo;
sync_start = display + dvo_timing->vsync_off;
sync_end = sync_start + dvo_timing->vsync_pulse_width;
total = display +
((dvo_timing->vblank_hi << 8) | dvo_timing->vblank_lo);
printf("\tvdisplay: %d\n", display);
printf("\tvsync [%d, %d] %s\n", sync_start, sync_end,
dvo_timing->vsync_positive ? "+sync" : "-sync");
printf("\tvtotal: %d\n", total);
printf("\tclock: %d\n", dvo_timing->clock * 10);
}
static void dump_sdvo_panel_dtds(void)
{
struct bdb_block *block;
struct lvds_dvo_timing2 *dvo_timing;
int n, count;
block = find_section(BDB_SDVO_PANEL_DTDS);
if (!block) {
printf("No SDVO panel dtds block\n");
return;
}
printf("SDVO panel dtds:\n");
count = block->size / sizeof(struct lvds_dvo_timing2);
dvo_timing = block->data;
for (n = 0; n < count; n++) {
printf("%d:\n", n);
print_detail_timing_data(dvo_timing++);
}
free(block);
}
static void dump_sdvo_lvds_options(void)
{
struct bdb_block *block;
struct bdb_sdvo_lvds_options *options;
block = find_section(BDB_SDVO_LVDS_OPTIONS);
if (!block) {
printf("No SDVO LVDS options block\n");
return;
}
options = block->data;
printf("SDVO LVDS options block:\n");
printf("\tbacklight: %d\n", options->panel_backlight);
printf("\th40 type: %d\n", options->h40_set_panel_type);
printf("\ttype: %d\n", options->panel_type);
printf("\tssc_clk_freq: %d\n", options->ssc_clk_freq);
printf("\tals_low_trip: %d\n", options->als_low_trip);
printf("\tals_high_trip: %d\n", options->als_high_trip);
/*
u8 sclalarcoeff_tab_row_num;
u8 sclalarcoeff_tab_row_size;
u8 coefficient[8];
*/
printf("\tmisc[0]: %x\n", options->panel_misc_bits_1);
printf("\tmisc[1]: %x\n", options->panel_misc_bits_2);
printf("\tmisc[2]: %x\n", options->panel_misc_bits_3);
printf("\tmisc[3]: %x\n", options->panel_misc_bits_4);
free(block);
}
static int
get_device_id(unsigned char *bios)
{
......@@ -773,17 +853,36 @@ int main(int argc, char **argv)
return 1;
}
pI830->VBIOS = mmap(NULL, finfo.st_size, PROT_READ, MAP_SHARED, fd, 0);
if (pI830->VBIOS == MAP_FAILED) {
printf("failed to map \"%s\": %s\n", filename, strerror(errno));
return 1;
if (finfo.st_size == 0) {
int len = 0, ret;
finfo.st_size = 8192;
VBIOS = malloc (finfo.st_size);
while ((ret = read(fd, VBIOS + len, finfo.st_size - len))) {
if (ret < 0) {
printf("failed to read \"%s\": %s\n", filename,
strerror(errno));
return 1;
}
len += ret;
if (len == finfo.st_size) {
finfo.st_size *= 2;
VBIOS = realloc(VBIOS, finfo.st_size);
}
}
} else {
VBIOS = mmap(NULL, finfo.st_size, PROT_READ, MAP_SHARED, fd, 0);
if (VBIOS == MAP_FAILED) {
printf("failed to map \"%s\": %s\n", filename, strerror(errno));
return 1;
}
}
/* Scour memory looking for the VBT signature */
for (i = 0; i + 4 < finfo.st_size; i++) {
if (!memcmp(pI830->VBIOS + i, "$VBT", 4)) {
if (!memcmp(VBIOS + i, "$VBT", 4)) {
vbt_off = i;
vbt = (struct vbt_header *)(pI830->VBIOS + i);
vbt = (struct vbt_header *)(VBIOS + i);
break;
}
}
......@@ -796,7 +895,7 @@ int main(int argc, char **argv)
printf("VBT vers: %d.%d\n", vbt->version / 100, vbt->version % 100);
bdb_off = vbt_off + vbt->bdb_offset;
bdb = (struct bdb_header *)(pI830->VBIOS + bdb_off);
bdb = (struct bdb_header *)(VBIOS + bdb_off);
strncpy(signature, (char *)bdb->signature, 16);
signature[16] = 0;
printf("BDB sig: %s\n", signature);
......@@ -812,7 +911,7 @@ int main(int argc, char **argv)
}
printf("\n");
devid = get_device_id(pI830->VBIOS);
devid = get_device_id(VBIOS);
if (devid == -1)
printf("Warning: could not find PCI device ID!\n");
......@@ -824,6 +923,9 @@ int main(int argc, char **argv)
dump_lvds_ptr_data();
dump_backlight_info();
dump_sdvo_lvds_options();
dump_sdvo_panel_dtds();
dump_driver_feature();
dump_edp();
......
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