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drm/nouveau: fabricate DCB encoder table for iMac G4

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In typical Apple fashion there's no standard information about what
encoders are present on this machine, this patch adds a quirk to
provide it.

Signed-off-by: Francisco Jerez <currojerez@riseup.net>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Francisco Jerez 2010-11-19 18:08:47 +10:00 committed by Ben Skeggs
parent 7f4a195fcb
commit 2e5702aff3
1 changed files with 38 additions and 64 deletions
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102
drivers/gpu/drm/nouveau/nouveau_bios.c
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@ -6053,52 +6053,17 @@ static struct dcb_entry *new_dcb_entry(struct dcb_table *dcb)
return entry;
}
static void fabricate_vga_output(struct dcb_table *dcb, int i2c, int heads)
static void fabricate_dcb_output(struct dcb_table *dcb, int type, int i2c,
int heads, int or)
{
struct dcb_entry *entry = new_dcb_entry(dcb);
entry->type = 0;
entry->type = type;
entry->i2c_index = i2c;
entry->heads = heads;
entry->location = DCB_LOC_ON_CHIP;
entry->or = 1;
}
static void fabricate_dvi_i_output(struct dcb_table *dcb, bool twoHeads)
{
struct dcb_entry *entry = new_dcb_entry(dcb);
entry->type = 2;
entry->i2c_index = LEGACY_I2C_PANEL;
entry->heads = twoHeads ? 3 : 1;
entry->location = !DCB_LOC_ON_CHIP; /* ie OFF CHIP */
entry->or = 1; /* means |0x10 gets set on CRE_LCD__INDEX */
entry->duallink_possible = false; /* SiI164 and co. are single link */
#if 0
/*
* For dvi-a either crtc probably works, but my card appears to only
* support dvi-d. "nvidia" still attempts to program it for dvi-a,
* doing the full fp output setup (program 0x6808.. fp dimension regs,
* setting 0x680848 to 0x10000111 to enable, maybe setting 0x680880);
* the monitor picks up the mode res ok and lights up, but no pixel
* data appears, so the board manufacturer probably connected up the
* sync lines, but missed the video traces / components
*
* with this introduction, dvi-a left as an exercise for the reader.
*/
fabricate_vga_output(dcb, LEGACY_I2C_PANEL, entry->heads);
#endif
}
static void fabricate_tv_output(struct dcb_table *dcb, bool twoHeads)
{
struct dcb_entry *entry = new_dcb_entry(dcb);
entry->type = 1;
entry->i2c_index = LEGACY_I2C_TV;
entry->heads = twoHeads ? 3 : 1;
entry->location = !DCB_LOC_ON_CHIP; /* ie OFF CHIP */
if (type != OUTPUT_ANALOG)
entry->location = !DCB_LOC_ON_CHIP; /* ie OFF CHIP */
entry->or = or;
}
static bool
@ -6365,8 +6330,36 @@ apply_dcb_encoder_quirks(struct drm_device *dev, int idx, u32 *conn, u32 *conf)
return true;
}
static void
fabricate_dcb_encoder_table(struct drm_device *dev, struct nvbios *bios)
{
struct dcb_table *dcb = &bios->dcb;
int all_heads = (nv_two_heads(dev) ? 3 : 1);
#ifdef __powerpc__
/* Apple iMac G4 NV17 */
if (of_machine_is_compatible("PowerMac4,5")) {
fabricate_dcb_output(dcb, OUTPUT_TMDS, 0, all_heads, 1);
fabricate_dcb_output(dcb, OUTPUT_ANALOG, 1, all_heads, 2);
return;
}
#endif
/* Make up some sane defaults */
fabricate_dcb_output(dcb, OUTPUT_ANALOG, LEGACY_I2C_CRT, 1, 1);
if (nv04_tv_identify(dev, bios->legacy.i2c_indices.tv) >= 0)
fabricate_dcb_output(dcb, OUTPUT_TV, LEGACY_I2C_TV,
all_heads, 0);
else if (bios->tmds.output0_script_ptr ||
bios->tmds.output1_script_ptr)
fabricate_dcb_output(dcb, OUTPUT_TMDS, LEGACY_I2C_PANEL,
all_heads, 1);
}
static int
parse_dcb_table(struct drm_device *dev, struct nvbios *bios, bool twoHeads)
parse_dcb_table(struct drm_device *dev, struct nvbios *bios)
{
struct drm_nouveau_private *dev_priv = dev->dev_private;
struct dcb_table *dcb = &bios->dcb;
@ -6386,12 +6379,7 @@ parse_dcb_table(struct drm_device *dev, struct nvbios *bios, bool twoHeads)
/* this situation likely means a really old card, pre DCB */
if (dcbptr == 0x0) {
NV_INFO(dev, "Assuming a CRT output exists\n");
fabricate_vga_output(dcb, LEGACY_I2C_CRT, 1);
if (nv04_tv_identify(dev, bios->legacy.i2c_indices.tv) >= 0)
fabricate_tv_output(dcb, twoHeads);
fabricate_dcb_encoder_table(dev, bios);
return 0;
}
@ -6451,21 +6439,7 @@ parse_dcb_table(struct drm_device *dev, struct nvbios *bios, bool twoHeads)
*/
NV_TRACEWARN(dev, "No useful information in BIOS output table; "
"adding all possible outputs\n");
fabricate_vga_output(dcb, LEGACY_I2C_CRT, 1);
/*
* Attempt to detect TV before DVI because the test
* for the former is more accurate and it rules the
* latter out.
*/
if (nv04_tv_identify(dev,
bios->legacy.i2c_indices.tv) >= 0)
fabricate_tv_output(dcb, twoHeads);
else if (bios->tmds.output0_script_ptr ||
bios->tmds.output1_script_ptr)
fabricate_dvi_i_output(dcb, twoHeads);
fabricate_dcb_encoder_table(dev, bios);
return 0;
}
@ -6859,7 +6833,7 @@ nouveau_bios_init(struct drm_device *dev)
if (ret)
return ret;
ret = parse_dcb_table(dev, bios, nv_two_heads(dev));
ret = parse_dcb_table(dev, bios);
if (ret)
return ret;