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drm/nv50: parse/use some more de-magiced parts of gpio table entries 

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Ben Skeggs 2010-04-07 12:05:32 +10:00
parent 2535d71c80
commit 02faec09b2
2 changed files with 11 additions and 14 deletions
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23
drivers/gpu/drm/nouveau/nouveau_bios.c
View File

@ -2595,10 +2595,7 @@ init_gpio(struct nvbios *bios, uint16_t offset, struct init_exec *iexec)
r = nv50_gpio_reg[gpio->line >> 3];
s = (gpio->line & 0x07) << 2;
v = bios_rd32(bios, r) & ~(0x00000003 << s);
if (gpio->entry & 0x01000000)
v |= (((gpio->entry & 0x60000000) >> 29) ^ 2) << s;
else
v |= (((gpio->entry & 0x18000000) >> 27) ^ 2) << s;
v |= (gpio->state[gpio->state_default] ^ 2) << s;
bios_wr32(bios, r, v);
r = nv50_gpio_ctl[gpio->line >> 4];
@ -5078,21 +5075,19 @@ parse_dcb30_gpio_entry(struct nvbios *bios, uint16_t offset)
static void
parse_dcb40_gpio_entry(struct nvbios *bios, uint16_t offset)
{
uint32_t entry = ROM32(bios->data[offset]);
struct dcb_gpio_entry *gpio;
uint32_t ent = ROM32(bios->data[offset]);
uint8_t line = ent & 0x1f,
tag = ent >> 8 & 0xff;
if (tag == 0xff)
if ((entry & 0x0000ff00) == 0x0000ff00)
return;
gpio = new_gpio_entry(bios);
/* Currently unused, we may need more fields parsed at some
* point. */
gpio->tag = tag;
gpio->line = line;
gpio->entry = ent;
gpio->tag = (entry & 0x0000ff00) >> 8;
gpio->line = (entry & 0x0000001f) >> 0;
gpio->state_default = (entry & 0x01000000) >> 24;
gpio->state[0] = (entry & 0x18000000) >> 27;
gpio->state[1] = (entry & 0x60000000) >> 29;
gpio->entry = entry;
}
static void

2
drivers/gpu/drm/nouveau/nouveau_bios.h
View File

@ -50,6 +50,8 @@ struct dcb_gpio_entry {
int line;
bool invert;
uint32_t entry;
uint8_t state_default;
uint8_t state[2];
};
struct dcb_gpio_table {