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From b4166db6d1f951a460e5e7f52bb4b4d96f27f55a Mon Sep 17 00:00:00 2001
From: Francisco Jerez <currojerez@riseup.net>
Date: Fri, 19 Nov 2010 18:08:47 +1000
Subject: [PATCH 1/2] drm-nouveau-imac-g4
drm/nouveau: fabricate DCB encoder table for iMac G4
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>
---
drivers/gpu/drm/nouveau/nouveau_bios.c | 102 ++++++++++++--------------------
1 files changed, 38 insertions(+), 64 deletions(-)
diff --git a/drivers/gpu/drm/nouveau/nouveau_bios.c b/drivers/gpu/drm/nouveau/nouveau_bios.c
index 72905c9..8c287f8 100644
--- a/drivers/gpu/drm/nouveau/nouveau_bios.c
+++ b/drivers/gpu/drm/nouveau/nouveau_bios.c
@@ -5985,52 +5985,17 @@ 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
@@ -6297,8 +6262,36 @@ 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;
@@ -6318,12 +6311,7 @@ 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;
}
@@ -6383,21 +6371,7 @@ 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;
}
@@ -6787,7 +6761,7 @@ 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;
--
1.7.3.2
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