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path: root/drivers/gpu/drm/nouveau
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Diffstat (limited to 'drivers/gpu/drm/nouveau')
-rw-r--r--drivers/gpu/drm/nouveau/nouveau_bios.c90
-rw-r--r--drivers/gpu/drm/nouveau/nouveau_drv.h1
2 files changed, 40 insertions, 51 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_bios.c b/drivers/gpu/drm/nouveau/nouveau_bios.c
index bea5df7cf93c..73b590a71949 100644
--- a/drivers/gpu/drm/nouveau/nouveau_bios.c
+++ b/drivers/gpu/drm/nouveau/nouveau_bios.c
@@ -4426,55 +4426,32 @@ int nouveau_bios_parse_lvds_table(struct drm_device *dev, int pxclk, bool *dl, b
return 0;
}
-static uint8_t *
-bios_output_config_match(struct drm_device *dev, struct dcb_entry *dcbent,
- uint16_t record, int record_len, int record_nr,
- bool match_link)
+/* BIT 'U'/'d' table encoder subtables have hashes matching them to
+ * a particular set of encoders.
+ *
+ * This function returns true if a particular DCB entry matches.
+ */
+bool
+bios_encoder_match(struct dcb_entry *dcb, u32 hash)
{
- struct drm_nouveau_private *dev_priv = dev->dev_private;
- struct nvbios *bios = &dev_priv->vbios;
- uint32_t entry;
- uint16_t table;
- int i, v;
+ if ((hash & 0x000000f0) != (dcb->location << 4))
+ return false;
+ if ((hash & 0x0000000f) != dcb->type)
+ return false;
+ if (!(hash & (dcb->or << 16)))
+ return false;
- switch (dcbent->type) {
+ switch (dcb->type) {
case OUTPUT_TMDS:
case OUTPUT_LVDS:
case OUTPUT_DP:
- break;
- default:
- match_link = false;
- break;
- }
-
- for (i = 0; i < record_nr; i++, record += record_len) {
- table = ROM16(bios->data[record]);
- if (!table)
- continue;
- entry = ROM32(bios->data[table]);
-
- if (match_link) {
- v = (entry & 0x00c00000) >> 22;
- if (!(v & dcbent->sorconf.link))
- continue;
+ if (hash & 0x00c00000) {
+ if (!(hash & (dcb->sorconf.link << 22)))
+ return false;
}
-
- v = (entry & 0x000f0000) >> 16;
- if (!(v & dcbent->or))
- continue;
-
- v = (entry & 0x000000f0) >> 4;
- if (v != dcbent->location)
- continue;
-
- v = (entry & 0x0000000f);
- if (v != dcbent->type)
- continue;
-
- return &bios->data[table];
+ default:
+ return true;
}
-
- return NULL;
}
void *
@@ -4483,7 +4460,8 @@ nouveau_bios_dp_table(struct drm_device *dev, struct dcb_entry *dcbent,
{
struct drm_nouveau_private *dev_priv = dev->dev_private;
struct nvbios *bios = &dev_priv->vbios;
- uint8_t *table;
+ uint8_t *table, *entry;
+ int i;
if (!bios->display.dp_table_ptr) {
NV_ERROR(dev, "No pointer to DisplayPort table\n");
@@ -4497,10 +4475,17 @@ nouveau_bios_dp_table(struct drm_device *dev, struct dcb_entry *dcbent,
return NULL;
}
- *headerlen = table[4];
- return bios_output_config_match(dev, dcbent,
- bios->display.dp_table_ptr + table[1],
- table[2], table[3], table[0] >= 0x21);
+ entry = table + table[1];
+ for (i = 0; i < table[3]; i++, entry += table[2]) {
+ u8 *etable = ROMPTR(bios, entry[0]);
+ if (etable && bios_encoder_match(dcbent, ROM32(etable[0]))) {
+ *headerlen = table[4];
+ return etable;
+ }
+ }
+
+ NV_ERROR(dev, "DisplayPort encoder table not found\n");
+ return NULL;
}
int
@@ -4535,7 +4520,7 @@ nouveau_bios_run_display_table(struct drm_device *dev, u16 type, int pclk,
uint8_t *table = &bios->data[bios->display.script_table_ptr];
uint8_t *otable = NULL;
uint16_t script;
- int i = 0;
+ int i;
if (!bios->display.script_table_ptr) {
NV_ERROR(dev, "No pointer to output script table\n");
@@ -4587,9 +4572,12 @@ nouveau_bios_run_display_table(struct drm_device *dev, u16 type, int pclk,
NV_DEBUG_KMS(dev, "Searching for output entry for %d %d %d\n",
dcbent->type, dcbent->location, dcbent->or);
- otable = bios_output_config_match(dev, dcbent, table[1] +
- bios->display.script_table_ptr,
- table[2], table[3], table[0] >= 0x21);
+ for (i = 0; i < table[3]; i++) {
+ otable = ROMPTR(bios, table[table[1] + (i * table[2])]);
+ if (otable && bios_encoder_match(dcbent, ROM32(otable[0])))
+ break;
+ }
+
if (!otable) {
NV_DEBUG_KMS(dev, "failed to match any output table\n");
return 1;
diff --git a/drivers/gpu/drm/nouveau/nouveau_drv.h b/drivers/gpu/drm/nouveau/nouveau_drv.h
index 3cf8e6a10e9d..d269b7ba45cc 100644
--- a/drivers/gpu/drm/nouveau/nouveau_drv.h
+++ b/drivers/gpu/drm/nouveau/nouveau_drv.h
@@ -1090,6 +1090,7 @@ extern int run_tmds_table(struct drm_device *, struct dcb_entry *,
int head, int pxclk);
extern int call_lvds_script(struct drm_device *, struct dcb_entry *, int head,
enum LVDS_script, int pxclk);
+bool bios_encoder_match(struct dcb_entry *, u32 hash);
/* nouveau_ttm.c */
int nouveau_ttm_global_init(struct drm_nouveau_private *);