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drm/nouveau/dp: make functions for executing various bios tables

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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>
This commit is contained in:
Ben Skeggs 2012-03-09 15:22:19 +10:00
parent c11dd0da52
commit 8c1dcb6573
1 changed files with 46 additions and 9 deletions
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55
drivers/gpu/drm/nouveau/nouveau_dp.c
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@ -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);