diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nouveau_volt.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nouveau_volt.c | 46 |
1 files changed, 37 insertions, 9 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_volt.c b/drivers/gpu/drm/nouveau/nouveau_volt.c index 75e872741d9..86d03e15735 100644 --- a/drivers/gpu/drm/nouveau/nouveau_volt.c +++ b/drivers/gpu/drm/nouveau/nouveau_volt.c @@ -27,7 +27,7 @@ #include "nouveau_drv.h" #include "nouveau_pm.h" -static const enum dcb_gpio_tag vidtag[] = { 0x04, 0x05, 0x06, 0x1a }; +static const enum dcb_gpio_tag vidtag[] = { 0x04, 0x05, 0x06, 0x1a, 0x73 }; static int nr_vidtag = sizeof(vidtag) / sizeof(vidtag[0]); int @@ -170,6 +170,13 @@ nouveau_volt_init(struct drm_device *dev) */ vidshift = 2; break; + case 0x40: + headerlen = volt[1]; + recordlen = volt[2]; + entries = volt[3]; /* not a clue what the entries are for.. */ + vidmask = volt[11]; /* guess.. */ + vidshift = 0; + break; default: NV_WARN(dev, "voltage table 0x%02x unknown\n", volt[0]); return; @@ -197,16 +204,37 @@ nouveau_volt_init(struct drm_device *dev) } /* parse vbios entries into common format */ - voltage->level = kcalloc(entries, sizeof(*voltage->level), GFP_KERNEL); - if (!voltage->level) - return; + voltage->version = volt[0]; + if (voltage->version < 0x40) { + voltage->nr_level = entries; + voltage->level = + kcalloc(entries, sizeof(*voltage->level), GFP_KERNEL); + if (!voltage->level) + return; - entry = volt + headerlen; - for (i = 0; i < entries; i++, entry += recordlen) { - voltage->level[i].voltage = entry[0]; - voltage->level[i].vid = entry[1] >> vidshift; + entry = volt + headerlen; + for (i = 0; i < entries; i++, entry += recordlen) { + voltage->level[i].voltage = entry[0] * 10000; + voltage->level[i].vid = entry[1] >> vidshift; + } + } else { + u32 volt_uv = ROM32(volt[4]); + s16 step_uv = ROM16(volt[8]); + u8 vid; + + voltage->nr_level = voltage->vid_mask + 1; + voltage->level = kcalloc(voltage->nr_level, + sizeof(*voltage->level), GFP_KERNEL); + if (!voltage->level) + return; + + for (vid = 0; vid <= voltage->vid_mask; vid++) { + voltage->level[vid].voltage = volt_uv; + voltage->level[vid].vid = vid; + volt_uv += step_uv; + } } - voltage->nr_level = entries; + voltage->supported = true; } |