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authorBen Skeggs <bskeggs@redhat.com>2012-03-09 15:22:19 +1000
committerBen Skeggs <bskeggs@redhat.com>2012-03-13 17:15:02 +1000
commit8c1dcb6573ae71ffae392edf5f458543d310607e (patch)
treec970dfbd5e91d2526a99624baa9a38ac2cd70bd9 /drivers/gpu/drm/nouveau
parentc11dd0da5277596d0ccdccb745b273d69a94f2d7 (diff)
drm/nouveau/dp: make functions for executing various bios tables
More code to do the same thing, but will make it easier to handle various changes that could possibly happen the the VBIOS tables. Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/nouveau')
-rw-r--r--drivers/gpu/drm/nouveau/nouveau_dp.c55
1 files changed, 46 insertions, 9 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_dp.c b/drivers/gpu/drm/nouveau/nouveau_dp.c
index c51c68b045a8..1a613ab4e08f 100644
--- a/drivers/gpu/drm/nouveau/nouveau_dp.c
+++ b/drivers/gpu/drm/nouveau/nouveau_dp.c
@@ -554,6 +554,49 @@ dp_link_train_eq(struct drm_device *dev, struct dp_state *dp)
return eq_done ? 0 : -1;
}
+static void
+dp_set_downspread(struct drm_device *dev, struct dp_state *dp, bool enable)
+{
+ u16 script = 0x0000;
+ u8 *entry, *table = nouveau_dp_bios_data(dev, dp->dcb, &entry);
+ if (table) {
+ if (table[0] >= 0x20 && table[0] <= 0x30) {
+ if (enable)
+ script = ROM16(entry[12]);
+ else
+ script = ROM16(entry[14]);
+ }
+ }
+
+ nouveau_bios_run_init_table(dev, script, dp->dcb, dp->crtc);
+}
+
+static void
+dp_link_train_init(struct drm_device *dev, struct dp_state *dp)
+{
+ u16 script = 0x0000;
+ u8 *entry, *table = nouveau_dp_bios_data(dev, dp->dcb, &entry);
+ if (table) {
+ if (table[0] >= 0x20 && table[0] <= 0x30)
+ script = ROM16(entry[6]);
+ }
+
+ nouveau_bios_run_init_table(dev, script, dp->dcb, dp->crtc);
+}
+
+static void
+dp_link_train_fini(struct drm_device *dev, struct dp_state *dp)
+{
+ u16 script = 0x0000;
+ u8 *entry, *table = nouveau_dp_bios_data(dev, dp->dcb, &entry);
+ if (table) {
+ if (table[0] >= 0x20 && table[0] <= 0x30)
+ script = ROM16(entry[8]);
+ }
+
+ nouveau_bios_run_init_table(dev, script, dp->dcb, dp->crtc);
+}
+
bool
nouveau_dp_link_train(struct drm_encoder *encoder, u32 datarate)
{
@@ -589,16 +632,10 @@ nouveau_dp_link_train(struct drm_encoder *encoder, u32 datarate)
nouveau_gpio_irq(dev, 0, nv_connector->hpd, 0xff, false);
/* enable down-spreading, if possible */
- if (dp.table[1] >= 16) {
- u16 script = ROM16(dp.entry[14]);
- if (nv_encoder->dp.dpcd[3] & 1)
- script = ROM16(dp.entry[12]);
-
- nouveau_bios_run_init_table(dev, script, dp.dcb, dp.crtc);
- }
+ dp_set_downspread(dev, &dp, nv_encoder->dp.dpcd[3] & 1);
/* execute pre-train script from vbios */
- nouveau_bios_run_init_table(dev, ROM16(dp.entry[6]), dp.dcb, dp.crtc);
+ dp_link_train_init(dev, &dp);
/* start off at highest link rate supported by encoder and display */
while (*link_bw > nv_encoder->dp.link_bw)
@@ -632,7 +669,7 @@ nouveau_dp_link_train(struct drm_encoder *encoder, u32 datarate)
dp_set_training_pattern(dev, &dp, DP_TRAINING_PATTERN_DISABLE);
/* execute post-train script from vbios */
- nouveau_bios_run_init_table(dev, ROM16(dp.entry[8]), dp.dcb, dp.crtc);
+ dp_link_train_fini(dev, &dp);
/* re-enable hotplug detect */
nouveau_gpio_irq(dev, 0, nv_connector->hpd, 0xff, true);