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drm/nv50: initial kms support for off-chip TMDS/DP encoders
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Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
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Ben Skeggs committed Feb 20, 2013
1 parent 476e84e commit eb6313a
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Showing 2 changed files with 202 additions and 18 deletions.
5 changes: 4 additions & 1 deletion drivers/gpu/drm/nouveau/nouveau_bios.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1469,6 +1469,7 @@ parse_dcb20_entry(struct drm_device *dev, struct dcb_table *dcb,
}
case DCB_OUTPUT_DP:
entry->dpconf.sor.link = (conf & 0x00000030) >> 4;
entry->extdev = (conf & 0x0000ff00) >> 8;
switch ((conf & 0x00e00000) >> 21) {
case 0:
entry->dpconf.link_bw = 162000;
Expand All @@ -1490,8 +1491,10 @@ parse_dcb20_entry(struct drm_device *dev, struct dcb_table *dcb,
}
break;
case DCB_OUTPUT_TMDS:
if (dcb->version >= 0x40)
if (dcb->version >= 0x40) {
entry->tmdsconf.sor.link = (conf & 0x00000030) >> 4;
entry->extdev = (conf & 0x0000ff00) >> 8;
}
else if (dcb->version >= 0x30)
entry->tmdsconf.slave_addr = (conf & 0x00000700) >> 8;
else if (dcb->version >= 0x22)
Expand Down
215 changes: 198 additions & 17 deletions drivers/gpu/drm/nouveau/nv50_display.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1922,6 +1922,184 @@ nv50_sor_create(struct drm_connector *connector, struct dcb_output *dcbe)
return 0;
}

/******************************************************************************
* PIOR
*****************************************************************************/

static void
nv50_pior_dpms(struct drm_encoder *encoder, int mode)
{
struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
struct nv50_disp *disp = nv50_disp(encoder->dev);
u32 mthd = (nv_encoder->dcb->type << 12) | nv_encoder->or;
u32 ctrl = (mode == DRM_MODE_DPMS_ON);
nv_call(disp->core, NV50_DISP_PIOR_PWR + mthd, ctrl);
}

static bool
nv50_pior_mode_fixup(struct drm_encoder *encoder,
const struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode)
{
struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
struct nouveau_connector *nv_connector;

nv_connector = nouveau_encoder_connector_get(nv_encoder);
if (nv_connector && nv_connector->native_mode) {
if (nv_connector->scaling_mode != DRM_MODE_SCALE_NONE) {
int id = adjusted_mode->base.id;
*adjusted_mode = *nv_connector->native_mode;
adjusted_mode->base.id = id;
}
}

adjusted_mode->clock *= 2;
return true;
}

static void
nv50_pior_commit(struct drm_encoder *encoder)
{
}

static void
nv50_pior_mode_set(struct drm_encoder *encoder, struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode)
{
struct nv50_mast *mast = nv50_mast(encoder->dev);
struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
struct nouveau_crtc *nv_crtc = nouveau_crtc(encoder->crtc);
struct nouveau_connector *nv_connector;
u8 owner = 1 << nv_crtc->index;
u8 proto, depth;
u32 *push;

nv_connector = nouveau_encoder_connector_get(nv_encoder);
switch (nv_connector->base.display_info.bpc) {
case 10: depth = 0x6; break;
case 8: depth = 0x5; break;
case 6: depth = 0x2; break;
default: depth = 0x0; break;
}

switch (nv_encoder->dcb->type) {
case DCB_OUTPUT_TMDS:
case DCB_OUTPUT_DP:
proto = 0x0;
break;
default:
BUG_ON(1);
break;
}

nv50_pior_dpms(encoder, DRM_MODE_DPMS_ON);

push = evo_wait(mast, 8);
if (push) {
if (nv50_vers(mast) < NVD0_DISP_MAST_CLASS) {
u32 ctrl = (depth << 16) | (proto << 8) | owner;
if (mode->flags & DRM_MODE_FLAG_NHSYNC)
ctrl |= 0x00001000;
if (mode->flags & DRM_MODE_FLAG_NVSYNC)
ctrl |= 0x00002000;
evo_mthd(push, 0x0700 + (nv_encoder->or * 0x040), 1);
evo_data(push, ctrl);
}

evo_kick(push, mast);
}

nv_encoder->crtc = encoder->crtc;
}

static void
nv50_pior_disconnect(struct drm_encoder *encoder)
{
struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
struct nv50_mast *mast = nv50_mast(encoder->dev);
const int or = nv_encoder->or;
u32 *push;

if (nv_encoder->crtc) {
nv50_crtc_prepare(nv_encoder->crtc);

push = evo_wait(mast, 4);
if (push) {
if (nv50_vers(mast) < NVD0_DISP_MAST_CLASS) {
evo_mthd(push, 0x0700 + (or * 0x040), 1);
evo_data(push, 0x00000000);
}

evo_mthd(push, 0x0080, 1);
evo_data(push, 0x00000000);
evo_kick(push, mast);
}
}

nv_encoder->crtc = NULL;
}

static void
nv50_pior_destroy(struct drm_encoder *encoder)
{
drm_encoder_cleanup(encoder);
kfree(encoder);
}

static const struct drm_encoder_helper_funcs nv50_pior_hfunc = {
.dpms = nv50_pior_dpms,
.mode_fixup = nv50_pior_mode_fixup,
.prepare = nv50_pior_disconnect,
.commit = nv50_pior_commit,
.mode_set = nv50_pior_mode_set,
.disable = nv50_pior_disconnect,
.get_crtc = nv50_display_crtc_get,
};

static const struct drm_encoder_funcs nv50_pior_func = {
.destroy = nv50_pior_destroy,
};

static int
nv50_pior_create(struct drm_connector *connector, struct dcb_output *dcbe)
{
struct nouveau_drm *drm = nouveau_drm(connector->dev);
struct nouveau_i2c *i2c = nouveau_i2c(drm->device);
struct nouveau_i2c_port *ddc = NULL;
struct nouveau_encoder *nv_encoder;
struct drm_encoder *encoder;
int type;

switch (dcbe->type) {
case DCB_OUTPUT_TMDS:
ddc = i2c->find_type(i2c, NV_I2C_TYPE_EXTDDC(dcbe->extdev));
type = DRM_MODE_ENCODER_TMDS;
break;
case DCB_OUTPUT_DP:
ddc = i2c->find_type(i2c, NV_I2C_TYPE_EXTAUX(dcbe->extdev));
type = DRM_MODE_ENCODER_TMDS;
break;
default:
return -ENODEV;
}

nv_encoder = kzalloc(sizeof(*nv_encoder), GFP_KERNEL);
if (!nv_encoder)
return -ENOMEM;
nv_encoder->dcb = dcbe;
nv_encoder->or = ffs(dcbe->or) - 1;
nv_encoder->i2c = ddc;

encoder = to_drm_encoder(nv_encoder);
encoder->possible_crtcs = dcbe->heads;
encoder->possible_clones = 0;
drm_encoder_init(connector->dev, encoder, &nv50_pior_func, type);
drm_encoder_helper_add(encoder, &nv50_pior_hfunc);

drm_mode_connector_attach_encoder(connector, encoder);
return 0;
}

/******************************************************************************
* Init
*****************************************************************************/
Expand Down Expand Up @@ -2044,25 +2222,28 @@ nv50_display_create(struct drm_device *dev)
if (IS_ERR(connector))
continue;

if (dcbe->location != DCB_LOC_ON_CHIP) {
NV_WARN(drm, "skipping off-chip encoder %d/%d\n",
dcbe->type, ffs(dcbe->or) - 1);
continue;
if (dcbe->location == DCB_LOC_ON_CHIP) {
switch (dcbe->type) {
case DCB_OUTPUT_TMDS:
case DCB_OUTPUT_LVDS:
case DCB_OUTPUT_DP:
ret = nv50_sor_create(connector, dcbe);
break;
case DCB_OUTPUT_ANALOG:
ret = nv50_dac_create(connector, dcbe);
break;
default:
ret = -ENODEV;
break;
}
} else {
ret = nv50_pior_create(connector, dcbe);
}

switch (dcbe->type) {
case DCB_OUTPUT_TMDS:
case DCB_OUTPUT_LVDS:
case DCB_OUTPUT_DP:
nv50_sor_create(connector, dcbe);
break;
case DCB_OUTPUT_ANALOG:
nv50_dac_create(connector, dcbe);
break;
default:
NV_WARN(drm, "skipping unsupported encoder %d/%d\n",
dcbe->type, ffs(dcbe->or) - 1);
continue;
if (ret) {
NV_WARN(drm, "failed to create encoder %d/%d/%d: %d\n",
dcbe->location, dcbe->type,
ffs(dcbe->or) - 1, ret);
}
}

Expand Down

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