drm/nouveau/dp: move all nv50/sor-specific code out of nouveau_dp.c
Off-chip encoders (which we don't support yet anyway), and newer chipsets
(such as NVD9...), will need their own code for this.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
diff --git a/drivers/gpu/drm/nouveau/nouveau_dp.c b/drivers/gpu/drm/nouveau/nouveau_dp.c
index 1a613ab..f38f561 100644
--- a/drivers/gpu/drm/nouveau/nouveau_dp.c
+++ b/drivers/gpu/drm/nouveau/nouveau_dp.c
@@ -161,116 +161,6 @@
return ret;
}
-static u32
-dp_link_bw_get(struct drm_device *dev, int or, int link)
-{
- u32 ctrl = nv_rd32(dev, 0x614300 + (or * 0x800));
- if (!(ctrl & 0x000c0000))
- return 162000;
- return 270000;
-}
-
-static int
-dp_lane_count_get(struct drm_device *dev, int or, int link)
-{
- u32 ctrl = nv_rd32(dev, NV50_SOR_DP_CTRL(or, link));
- switch (ctrl & 0x000f0000) {
- case 0x00010000: return 1;
- case 0x00030000: return 2;
- default:
- return 4;
- }
-}
-
-void
-nouveau_dp_tu_update(struct drm_device *dev, int or, int link, u32 clk, u32 bpp)
-{
- const u32 symbol = 100000;
- int bestTU = 0, bestVTUi = 0, bestVTUf = 0, bestVTUa = 0;
- int TU, VTUi, VTUf, VTUa;
- u64 link_data_rate, link_ratio, unk;
- u32 best_diff = 64 * symbol;
- u32 link_nr, link_bw, r;
-
- /* calculate packed data rate for each lane */
- link_nr = dp_lane_count_get(dev, or, link);
- link_data_rate = (clk * bpp / 8) / link_nr;
-
- /* calculate ratio of packed data rate to link symbol rate */
- link_bw = dp_link_bw_get(dev, or, link);
- link_ratio = link_data_rate * symbol;
- r = do_div(link_ratio, link_bw);
-
- for (TU = 64; TU >= 32; TU--) {
- /* calculate average number of valid symbols in each TU */
- u32 tu_valid = link_ratio * TU;
- u32 calc, diff;
-
- /* find a hw representation for the fraction.. */
- VTUi = tu_valid / symbol;
- calc = VTUi * symbol;
- diff = tu_valid - calc;
- if (diff) {
- if (diff >= (symbol / 2)) {
- VTUf = symbol / (symbol - diff);
- if (symbol - (VTUf * diff))
- VTUf++;
-
- if (VTUf <= 15) {
- VTUa = 1;
- calc += symbol - (symbol / VTUf);
- } else {
- VTUa = 0;
- VTUf = 1;
- calc += symbol;
- }
- } else {
- VTUa = 0;
- VTUf = min((int)(symbol / diff), 15);
- calc += symbol / VTUf;
- }
-
- diff = calc - tu_valid;
- } else {
- /* no remainder, but the hw doesn't like the fractional
- * part to be zero. decrement the integer part and
- * have the fraction add a whole symbol back
- */
- VTUa = 0;
- VTUf = 1;
- VTUi--;
- }
-
- if (diff < best_diff) {
- best_diff = diff;
- bestTU = TU;
- bestVTUa = VTUa;
- bestVTUf = VTUf;
- bestVTUi = VTUi;
- if (diff == 0)
- break;
- }
- }
-
- if (!bestTU) {
- NV_ERROR(dev, "DP: unable to find suitable config\n");
- return;
- }
-
- /* XXX close to vbios numbers, but not right */
- unk = (symbol - link_ratio) * bestTU;
- unk *= link_ratio;
- r = do_div(unk, symbol);
- r = do_div(unk, symbol);
- unk += 6;
-
- nv_mask(dev, NV50_SOR_DP_CTRL(or, link), 0x000001fc, bestTU << 2);
- nv_mask(dev, NV50_SOR_DP_SCFG(or, link), 0x010f7f3f, bestVTUa << 24 |
- bestVTUf << 16 |
- bestVTUi << 8 |
- unk);
-}
-
u8 *
nouveau_dp_bios_data(struct drm_device *dev, struct dcb_entry *dcb, u8 **entry)
{
@@ -318,13 +208,10 @@
* link training
*****************************************************************************/
struct dp_state {
+ struct dp_train_func *func;
struct dcb_entry *dcb;
- u8 *table;
- u8 *entry;
int auxch;
int crtc;
- int or;
- int link;
u8 *dpcd;
int link_nr;
u32 link_bw;
@@ -335,100 +222,48 @@
static void
dp_set_link_config(struct drm_device *dev, struct dp_state *dp)
{
- int or = dp->or, link = dp->link;
- u8 *entry, sink[2];
- u32 dp_ctrl;
- u16 script;
+ u8 sink[2];
NV_DEBUG_KMS(dev, "%d lanes at %d KB/s\n", dp->link_nr, dp->link_bw);
- /* set selected link rate on source */
- switch (dp->link_bw) {
- case 270000:
- nv_mask(dev, 0x614300 + (or * 0x800), 0x000c0000, 0x00040000);
- sink[0] = DP_LINK_BW_2_7;
- break;
- default:
- nv_mask(dev, 0x614300 + (or * 0x800), 0x000c0000, 0x00000000);
- sink[0] = DP_LINK_BW_1_62;
- break;
- }
-
- /* offset +0x0a of each dp encoder table entry is a pointer to another
- * table, that has (among other things) pointers to more scripts that
- * need to be executed, this time depending on link speed.
- */
- entry = ROMPTR(dev, dp->entry[10]);
- if (entry) {
- if (dp->table[0] < 0x30) {
- while (dp->link_bw < (ROM16(entry[0]) * 10))
- entry += 4;
- script = ROM16(entry[2]);
- } else {
- while (dp->link_bw < (entry[0] * 27000))
- entry += 3;
- script = ROM16(entry[1]);
- }
-
- nouveau_bios_run_init_table(dev, script, dp->dcb, dp->crtc);
- }
-
- /* configure lane count on the source */
- dp_ctrl = ((1 << dp->link_nr) - 1) << 16;
- sink[1] = dp->link_nr;
- if (dp->dpcd[2] & DP_ENHANCED_FRAME_CAP) {
- dp_ctrl |= 0x00004000;
- sink[1] |= DP_LANE_COUNT_ENHANCED_FRAME_EN;
- }
-
- nv_mask(dev, NV50_SOR_DP_CTRL(or, link), 0x001f4000, dp_ctrl);
+ /* set desired link configuration on the source */
+ dp->func->link_set(dev, dp->dcb, dp->crtc, dp->link_nr, dp->link_bw,
+ dp->dpcd[2] & DP_ENHANCED_FRAME_CAP);
/* inform the sink of the new configuration */
+ sink[0] = dp->link_bw / 27000;
+ sink[1] = dp->link_nr;
+ if (dp->dpcd[2] & DP_ENHANCED_FRAME_CAP)
+ sink[1] |= DP_LANE_COUNT_ENHANCED_FRAME_EN;
+
auxch_tx(dev, dp->auxch, 8, DP_LINK_BW_SET, sink, 2);
}
static void
-dp_set_training_pattern(struct drm_device *dev, struct dp_state *dp, u8 tp)
+dp_set_training_pattern(struct drm_device *dev, struct dp_state *dp, u8 pattern)
{
u8 sink_tp;
- NV_DEBUG_KMS(dev, "training pattern %d\n", tp);
+ NV_DEBUG_KMS(dev, "training pattern %d\n", pattern);
- nv_mask(dev, NV50_SOR_DP_CTRL(dp->or, dp->link), 0x0f000000, tp << 24);
+ dp->func->train_set(dev, dp->dcb, pattern);
auxch_tx(dev, dp->auxch, 9, DP_TRAINING_PATTERN_SET, &sink_tp, 1);
sink_tp &= ~DP_TRAINING_PATTERN_MASK;
- sink_tp |= tp;
+ sink_tp |= pattern;
auxch_tx(dev, dp->auxch, 8, DP_TRAINING_PATTERN_SET, &sink_tp, 1);
}
-static const u8 nv50_lane_map[] = { 16, 8, 0, 24 };
-static const u8 nvaf_lane_map[] = { 24, 16, 8, 0 };
-
static int
dp_link_train_commit(struct drm_device *dev, struct dp_state *dp)
{
- struct drm_nouveau_private *dev_priv = dev->dev_private;
- u32 mask = 0, drv = 0, pre = 0, unk = 0;
- const u8 *shifts;
- int link = dp->link;
- int or = dp->or;
int i;
- if (dev_priv->chipset != 0xaf)
- shifts = nv50_lane_map;
- else
- shifts = nvaf_lane_map;
-
for (i = 0; i < dp->link_nr; i++) {
- u8 *conf = dp->entry + dp->table[4];
u8 lane = (dp->stat[4 + (i >> 1)] >> ((i & 1) * 4)) & 0xf;
u8 lpre = (lane & 0x0c) >> 2;
u8 lvsw = (lane & 0x03) >> 0;
- mask |= 0xff << shifts[i];
- unk |= 1 << (shifts[i] >> 3);
-
dp->conf[i] = (lpre << 3) | lvsw;
if (lvsw == DP_TRAIN_VOLTAGE_SWING_1200)
dp->conf[i] |= DP_TRAIN_MAX_SWING_REACHED;
@@ -436,41 +271,9 @@
dp->conf[i] |= DP_TRAIN_MAX_PRE_EMPHASIS_REACHED;
NV_DEBUG_KMS(dev, "config lane %d %02x\n", i, dp->conf[i]);
-
- if (dp->table[0] < 0x30) {
- u8 *last = conf + (dp->entry[4] * dp->table[5]);
- while (lvsw != conf[0] || lpre != conf[1]) {
- conf += dp->table[5];
- if (conf >= last)
- return -EINVAL;
- }
-
- conf += 2;
- } else {
- /* no lookup table anymore, set entries for each
- * combination of voltage swing and pre-emphasis
- * level allowed by the DP spec.
- */
- switch (lvsw) {
- case 0: lpre += 0; break;
- case 1: lpre += 4; break;
- case 2: lpre += 7; break;
- case 3: lpre += 9; break;
- }
-
- conf = conf + (lpre * dp->table[5]);
- conf++;
- }
-
- drv |= conf[0] << shifts[i];
- pre |= conf[1] << shifts[i];
- unk = (unk & ~0x0000ff00) | (conf[2] << 8);
+ dp->func->train_adj(dev, dp->dcb, i, lvsw, lpre);
}
- nv_mask(dev, NV50_SOR_DP_UNK118(or, link), mask, drv);
- nv_mask(dev, NV50_SOR_DP_UNK120(or, link), mask, pre);
- nv_mask(dev, NV50_SOR_DP_UNK130(or, link), 0x0000ff0f, unk);
-
return auxch_tx(dev, dp->auxch, 8, DP_TRAINING_LANE0_SET, dp->conf, 4);
}
@@ -598,7 +401,8 @@
}
bool
-nouveau_dp_link_train(struct drm_encoder *encoder, u32 datarate)
+nouveau_dp_link_train(struct drm_encoder *encoder, u32 datarate,
+ struct dp_train_func *func)
{
struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
struct nouveau_crtc *nv_crtc = nouveau_crtc(encoder->crtc);
@@ -614,15 +418,10 @@
if (!auxch)
return false;
- dp.table = nouveau_dp_bios_data(dev, nv_encoder->dcb, &dp.entry);
- if (!dp.table)
- return -EINVAL;
-
+ dp.func = func;
dp.dcb = nv_encoder->dcb;
dp.crtc = nv_crtc->index;
dp.auxch = auxch->drive;
- dp.or = nv_encoder->or;
- dp.link = !(nv_encoder->dcb->sorconf.link & 1);
dp.dpcd = nv_encoder->dp.dpcd;
/* some sinks toggle hotplug in response to some of the actions