From 8c1dcb6573ae71ffae392edf5f458543d310607e Mon Sep 17 00:00:00 2001 From: Ben Skeggs Date: Fri, 9 Mar 2012 15:22:19 +1000 Subject: [PATCH] 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 --- drivers/gpu/drm/nouveau/nouveau_dp.c | 55 +++++++++++++++++++++++----- 1 file 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);