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NV50: Use bios table for load pattern when possible.

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Maarten Maathuis 2008-07-21 14:50:07 +02:00
parent d00644c27d
commit 03f8208ab0
3 changed files with 46 additions and 4 deletions
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40
linux-core/nouveau_bios.c
View File

@ -128,6 +128,39 @@ struct bit_entry {
uint16_t offset;
};
static int parse_bit_A_tbl_entry(struct drm_device *dev, struct bios *bios, struct bit_entry *bitentry)
{
/* Parses the load detect value table.
*
* Starting at bitentry->offset:
*
* offset + 0 (16 bits): table pointer
*/
uint16_t load_table_pointer;
if (bitentry->length != 3) {
DRM_ERROR("Do not understand BIT loadval table\n");
return 0;
}
load_table_pointer = le16_to_cpu(*((uint16_t *)(&bios->data[bitentry->offset])));
if (load_table_pointer == 0x0) {
DRM_ERROR("Pointer to loadval table invalid\n");
return 0;
}
/* Some kind of signature */
if (bios->data[load_table_pointer] != 16 || bios->data[load_table_pointer + 1] != 4 ||
bios->data[load_table_pointer + 2] != 4 || bios->data[load_table_pointer + 3] != 2)
return 0;
bios->dactestval = le32_to_cpu(*((uint32_t *)&bios->data[load_table_pointer + 4])) & 0x3FF;
return 1;
}
static int parse_bit_C_tbl_entry(struct drm_device *dev, struct bios *bios, struct bit_entry *bitentry)
{
/* offset + 8 (16 bits): PLL limits table pointer
@ -136,7 +169,7 @@ static int parse_bit_C_tbl_entry(struct drm_device *dev, struct bios *bios, stru
*/
if (bitentry->length < 10) {
DRM_ERROR( "Do not understand BIT C table\n");
DRM_ERROR("Do not understand BIT C table\n");
return 0;
}
@ -149,7 +182,7 @@ static void parse_bit_structure(struct drm_device *dev, struct bios *bios, const
{
int entries = bios->data[bitoffset + 4];
/* parse i first, I next (which needs C & M before it), and L before D */
char parseorder[] = "iCMILDT";
char parseorder[] = "iCMILDTA";
struct bit_entry bitentry;
int i, j, offset;
@ -164,6 +197,9 @@ static void parse_bit_structure(struct drm_device *dev, struct bios *bios, const
continue;
switch (bitentry.id[0]) {
case 'A':
parse_bit_A_tbl_entry(dev, bios, &bitentry);
break;
case 'C':
parse_bit_C_tbl_entry(dev, bios, &bitentry);
break;

1
linux-core/nv50_connector.c
View File

@ -79,7 +79,6 @@ static struct nv50_output *nv50_connector_to_output(struct nv50_connector *conne
static int nv50_connector_hpd_detect(struct nv50_connector *connector)
{
struct drm_nouveau_private *dev_priv = connector->dev->dev_private;
struct nv50_output *output = NULL;
bool present = 0;
uint32_t reg = 0;

9
linux-core/nv50_dac.c
View File

@ -146,7 +146,14 @@ static int nv50_dac_detect(struct nv50_output *output)
NV_WRITE(NV50_PDISPLAY_DAC_REGS_DPMS_CTRL(or), 0x00150000 | NV50_PDISPLAY_DAC_REGS_DPMS_CTRL_PENDING);
while (NV_READ(NV50_PDISPLAY_DAC_REGS_DPMS_CTRL(or)) & NV50_PDISPLAY_DAC_REGS_DPMS_CTRL_PENDING);
load_pattern = 340; /* TODO: use a bios table for this */
/* Use bios provided value if possible. */
if (dev_priv->bios.dactestval) {
load_pattern = dev_priv->bios.dactestval;
NV50_DEBUG("Using bios provided load_pattern of %d\n", load_pattern);
} else {
load_pattern = 340;
NV50_DEBUG("Using default load_pattern of %d\n", load_pattern);
}
NV_WRITE(NV50_PDISPLAY_DAC_REGS_LOAD_CTRL(or), NV50_PDISPLAY_DAC_REGS_LOAD_CTRL_ACTIVE | load_pattern);
udelay(10000); /* give it some time to process */