there is a field in the voltage table which tells us if the VIDs are taken from
the entries or calculated through the header
v2: don't break older versions
Signed-off-by: Karol Herbst <nouv...@karolherbst.de>
Reviewed-by: Martin Peres <martin.pe...@free.fr>
Tested-by: Pierre Moreau <pierre.mor...@free.fr>
---
drm/nouveau/include/nvkm/subdev/bios/volt.h | 5 ++--
drm/nouveau/nvkm/subdev/bios/volt.c | 42 ++++++++++++++++-------------
drm/nouveau/nvkm/subdev/volt/base.c | 8 ++++--
3 files changed, 33 insertions(+), 22 deletions(-)
diff --git a/drm/nouveau/include/nvkm/subdev/bios/volt.h
b/drm/nouveau/include/nvkm/subdev/bios/volt.h
index b0df610..0d91c24 100644
--- a/drm/nouveau/include/nvkm/subdev/bios/volt.h
+++ b/drm/nouveau/include/nvkm/subdev/bios/volt.h
@@ -13,8 +13,9 @@ struct nvbios_volt {
u32 base;
/* GPIO mode */
- u8 vidmask;
- s16 step;
+ bool entry_based;
+ u8 vidmask;
+ s16 step;
/* PWM mode */
u32 pwm_freq;
diff --git a/drm/nouveau/nvkm/subdev/bios/volt.c
b/drm/nouveau/nvkm/subdev/bios/volt.c
index 81a47b2..70e1f9d 100644
--- a/drm/nouveau/nvkm/subdev/bios/volt.c
+++ b/drm/nouveau/nvkm/subdev/bios/volt.c
@@ -73,30 +73,34 @@ nvbios_volt_parse(struct nvkm_bios *bios, u8 *ver, u8 *hdr,
u8 *cnt, u8 *len,
memset(info, 0x00, sizeof(*info));
switch (!!volt * *ver) {
case 0x12:
- info->type = NVBIOS_VOLT_GPIO;
- info->vidmask = nvbios_rd08(bios, volt + 0x04);
+ info->type = NVBIOS_VOLT_GPIO;
+ info->vidmask = nvbios_rd08(bios, volt + 0x04);
+ info->entry_based = true;
break;
case 0x20:
- info->type = NVBIOS_VOLT_GPIO;
- info->vidmask = nvbios_rd08(bios, volt + 0x05);
+ info->type = NVBIOS_VOLT_GPIO;
+ info->vidmask = nvbios_rd08(bios, volt + 0x05);
+ info->entry_based = true;
break;
case 0x30:
- info->type = NVBIOS_VOLT_GPIO;
- info->vidmask = nvbios_rd08(bios, volt + 0x04);
+ info->type = NVBIOS_VOLT_GPIO;
+ info->vidmask = nvbios_rd08(bios, volt + 0x04);
+ info->entry_based = true;
break;
case 0x40:
- info->type = NVBIOS_VOLT_GPIO;
- info->base = nvbios_rd32(bios, volt + 0x04);
- info->step = nvbios_rd16(bios, volt + 0x08);
- info->vidmask = nvbios_rd08(bios, volt + 0x0b);
+ info->type = NVBIOS_VOLT_GPIO;
+ info->base = nvbios_rd32(bios, volt + 0x04);
+ info->step = nvbios_rd16(bios, volt + 0x08);
+ info->vidmask = nvbios_rd08(bios, volt + 0x0b);
+ info->entry_based = false; /* XXX: find the flag byte */
/*XXX*/
- info->min = 0;
- info->max = info->base;
+ info->min = 0;
+ info->max = info->base;
break;
case 0x50:
- info->min = nvbios_rd32(bios, volt + 0x0a);
- info->max = nvbios_rd32(bios, volt + 0x0e);
- info->base = nvbios_rd32(bios, volt + 0x12) & 0x00ffffff;
+ info->min = nvbios_rd32(bios, volt + 0x0a);
+ info->max = nvbios_rd32(bios, volt + 0x0e);
+ info->base = nvbios_rd32(bios, volt + 0x12) & 0x00ffffff;
/* offset 4 seems to be a flag byte */
if (nvbios_rd32(bios, volt + 0x4) & 1) {
@@ -104,9 +108,11 @@ nvbios_volt_parse(struct nvkm_bios *bios, u8 *ver, u8
*hdr, u8 *cnt, u8 *len,
info->pwm_freq = nvbios_rd32(bios, volt + 0x5) / 1000;
info->pwm_range = nvbios_rd32(bios, volt + 0x16);
} else {
- info->type = NVBIOS_VOLT_GPIO;
- info->vidmask = nvbios_rd08(bios, volt + 0x06);
- info->step = nvbios_rd16(bios, volt + 0x16);
+ info->type = NVBIOS_VOLT_GPIO;
+ info->vidmask = nvbios_rd08(bios, volt + 0x06);
+ info->step = nvbios_rd16(bios, volt + 0x16);
+ info->entry_based =
+ !(nvbios_rd08(bios, volt + 0x4) & 0x2);
}
break;
}
diff --git a/drm/nouveau/nvkm/subdev/volt/base.c
b/drm/nouveau/nvkm/subdev/volt/base.c
index 50b5649..ef653b1 100644
--- a/drm/nouveau/nvkm/subdev/volt/base.c
+++ b/drm/nouveau/nvkm/subdev/volt/base.c
@@ -112,6 +112,7 @@ nvkm_volt_set_id(struct nvkm_volt *volt, u8 id, int
condition)
static void
nvkm_volt_parse_bios(struct nvkm_bios *bios, struct nvkm_volt *volt)
{
+ struct nvkm_subdev *subdev = &bios->subdev;
struct nvbios_volt_entry ivid;
struct nvbios_volt info;
u8 ver, hdr, cnt, len;
@@ -119,7 +120,9 @@ nvkm_volt_parse_bios(struct nvkm_bios *bios, struct
nvkm_volt *volt)
int i;
data = nvbios_volt_parse(bios, &ver, &hdr, &cnt, &len, &info);
- if (data && info.vidmask && info.base && info.step) {
+ if (data && info.vidmask && info.base && info.step
+ && !info.entry_based) {
+ nvkm_debug(subdev, "found header based VIDs\n");
for (i = 0; i < info.vidmask + 1; i++) {
if (info.base >= info.min &&
info.base <= info.max) {
@@ -130,7 +133,8 @@ nvkm_volt_parse_bios(struct nvkm_bios *bios, struct
nvkm_volt *volt)
info.base += info.step;
}
volt->vid_mask = info.vidmask;
- } else if (data && info.vidmask) {
+ } else if (data && info.vidmask && info.entry_based) {
+ nvkm_debug(subdev, "found entry based VIDs\n");
for (i = 0; i < cnt; i++) {
data = nvbios_volt_entry_parse(bios, i, &ver, &hdr,
&ivid);
--
2.7.4
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