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drm/i915/hdmi: split infoframe setting from infoframe type code 

This makes it easier to add support for other infoframes (e.g. SPD,
vendor specific).

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Keith Packard <keithp@keithp.com>
This commit is contained in:
Jesse Barnes 2011-08-03 09:22:55 -07:00 committed by Keith Packard
parent ebec9a7bf1
commit 45187ace97
3 changed files with 113 additions and 53 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/gpu/drm/i915/i915_reg.h
View File

@ -1506,6 +1506,7 @@
#define VIDEO_DIP_SELECT_AVI (0 << 19)
#define VIDEO_DIP_SELECT_VENDOR (1 << 19)
#define VIDEO_DIP_SELECT_SPD (3 << 19)
#define VIDEO_DIP_SELECT_MASK (3 << 19)
#define VIDEO_DIP_FREQ_ONCE (0 << 16)
#define VIDEO_DIP_FREQ_VSYNC (1 << 16)
#define VIDEO_DIP_FREQ_2VSYNC (2 << 16)

2
drivers/gpu/drm/i915/intel_drv.h
View File

@ -178,6 +178,8 @@ struct intel_crtc {
#define to_intel_encoder(x) container_of(x, struct intel_encoder, base)
#define to_intel_framebuffer(x) container_of(x, struct intel_framebuffer, base)
#define DIP_HEADER_SIZE 5
#define DIP_TYPE_AVI 0x82
#define DIP_VERSION_AVI 0x2
#define DIP_LEN_AVI 13

163
drivers/gpu/drm/i915/intel_hdmi.c
View File

@ -45,6 +45,8 @@ struct intel_hdmi {
bool has_hdmi_sink;
bool has_audio;
int force_audio;
void (*write_infoframe)(struct drm_encoder *encoder,
struct dip_infoframe *frame);
};
static struct intel_hdmi *enc_to_intel_hdmi(struct drm_encoder *encoder)
@ -58,37 +60,70 @@ static struct intel_hdmi *intel_attached_hdmi(struct drm_connector *connector)
struct intel_hdmi, base);
}
void intel_dip_infoframe_csum(struct dip_infoframe *avi_if)
void intel_dip_infoframe_csum(struct dip_infoframe *frame)
{
uint8_t *data = (uint8_t *)avi_if;
uint8_t *data = (uint8_t *)frame;
uint8_t sum = 0;
unsigned i;
avi_if->checksum = 0;
avi_if->ecc = 0;
frame->checksum = 0;
frame->ecc = 0;
for (i = 0; i < sizeof(*avi_if); i++)
/* Header isn't part of the checksum */
for (i = 5; i < frame->len; i++)
sum += data[i];
avi_if->checksum = 0x100 - sum;
frame->checksum = 0x100 - sum;
}
static void intel_hdmi_set_avi_infoframe(struct drm_encoder *encoder)
static u32 intel_infoframe_index(struct dip_infoframe *frame)
{
struct dip_infoframe avi_if = {
.type = DIP_TYPE_AVI,
.ver = DIP_VERSION_AVI,
.len = DIP_LEN_AVI,
};
uint32_t *data = (uint32_t *)&avi_if;
u32 flags = 0;
switch (frame->type) {
case DIP_TYPE_AVI:
flags |= VIDEO_DIP_SELECT_AVI;
break;
case DIP_TYPE_SPD:
flags |= VIDEO_DIP_SELECT_SPD;
break;
default:
DRM_DEBUG_DRIVER("unknown info frame type %d\n", frame->type);
break;
}
return flags;
}
static u32 intel_infoframe_flags(struct dip_infoframe *frame)
{
u32 flags = 0;
switch (frame->type) {
case DIP_TYPE_AVI:
flags |= VIDEO_DIP_ENABLE_AVI | VIDEO_DIP_FREQ_VSYNC;
break;
case DIP_TYPE_SPD:
flags |= VIDEO_DIP_ENABLE_SPD | VIDEO_DIP_FREQ_2VSYNC;
break;
default:
DRM_DEBUG_DRIVER("unknown info frame type %d\n", frame->type);
break;
}
return flags;
}
static void i9xx_write_infoframe(struct drm_encoder *encoder,
struct dip_infoframe *frame)
{
uint32_t *data = (uint32_t *)frame;
struct drm_device *dev = encoder->dev;
struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
u32 port;
unsigned i;
u32 port, flags, val = I915_READ(VIDEO_DIP_CTL);
unsigned i, len = DIP_HEADER_SIZE + frame->len;
if (!intel_hdmi->has_hdmi_sink)
return;
/* XXX first guess at handling video port, is this corrent? */
if (intel_hdmi->sdvox_reg == SDVOB)
@ -98,52 +133,72 @@ static void intel_hdmi_set_avi_infoframe(struct drm_encoder *encoder)
else
return;
I915_WRITE(VIDEO_DIP_CTL, VIDEO_DIP_ENABLE | port |
VIDEO_DIP_SELECT_AVI | VIDEO_DIP_FREQ_VSYNC);
flags = intel_infoframe_index(frame);
intel_dip_infoframe_csum(&avi_if);
for (i = 0; i < sizeof(avi_if); i += 4) {
val &= ~VIDEO_DIP_SELECT_MASK;
I915_WRITE(VIDEO_DIP_CTL, val | port | flags);
for (i = 0; i < len; i += 4) {
I915_WRITE(VIDEO_DIP_DATA, *data);
data++;
}
I915_WRITE(VIDEO_DIP_CTL, VIDEO_DIP_ENABLE | port |
VIDEO_DIP_SELECT_AVI | VIDEO_DIP_FREQ_VSYNC |
VIDEO_DIP_ENABLE_AVI);
flags |= intel_infoframe_flags(frame);
I915_WRITE(VIDEO_DIP_CTL, VIDEO_DIP_ENABLE | val | port | flags);
}
static void intel_ironlake_hdmi_set_avi_infoframe(struct drm_encoder *encoder)
static void ironlake_write_infoframe(struct drm_encoder *encoder,
struct dip_infoframe *frame)
{
uint32_t *data = (uint32_t *)frame;
struct drm_device *dev = encoder->dev;
struct drm_i915_private *dev_priv = dev->dev_private;
struct drm_crtc *crtc = encoder->crtc;
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
int reg = TVIDEO_DIP_CTL(intel_crtc->pipe);
unsigned i, len = DIP_HEADER_SIZE + frame->len;
u32 flags, val = I915_READ(reg);
intel_wait_for_vblank(dev, intel_crtc->pipe);
flags = intel_infoframe_index(frame);
val &= ~VIDEO_DIP_SELECT_MASK;
I915_WRITE(reg, val | flags);
for (i = 0; i < len; i += 4) {
I915_WRITE(TVIDEO_DIP_DATA(intel_crtc->pipe), *data);
data++;
}
flags |= intel_infoframe_flags(frame);
I915_WRITE(reg, VIDEO_DIP_ENABLE | val | flags);
}
static void intel_set_infoframe(struct drm_encoder *encoder,
struct dip_infoframe *frame)
{
struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
if (!intel_hdmi->has_hdmi_sink)
return;
intel_dip_infoframe_csum(frame);
intel_hdmi->write_infoframe(encoder, frame);
}
static void intel_hdmi_set_avi_infoframe(struct drm_encoder *encoder)
{
struct dip_infoframe avi_if = {
.type = DIP_TYPE_AVI,
.ver = DIP_VERSION_AVI,
.len = DIP_LEN_AVI,
};
uint32_t *data = (uint32_t *)&avi_if;
struct drm_device *dev = encoder->dev;
struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
struct drm_crtc *crtc = encoder->crtc;
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
int reg = TVIDEO_DIP_CTL(intel_crtc->pipe);
unsigned i;
if (!intel_hdmi->has_hdmi_sink)
return;
intel_wait_for_vblank(dev, intel_crtc->pipe);
I915_WRITE(reg, VIDEO_DIP_SELECT_AVI);
intel_dip_infoframe_csum(&avi_if);
for (i = 0; i < sizeof(avi_if); i += 4) {
I915_WRITE(TVIDEO_DIP_DATA(intel_crtc->pipe), *data);
data++;
}
I915_WRITE(reg, VIDEO_DIP_ENABLE | VIDEO_DIP_SELECT_AVI |
VIDEO_DIP_FREQ_VSYNC | (DIP_LEN_AVI << 8) |
VIDEO_DIP_ENABLE_AVI);
intel_set_infoframe(encoder, &avi_if);
}
static void intel_hdmi_mode_set(struct drm_encoder *encoder,
@ -189,10 +244,7 @@ static void intel_hdmi_mode_set(struct drm_encoder *encoder,
I915_WRITE(intel_hdmi->sdvox_reg, sdvox);
POSTING_READ(intel_hdmi->sdvox_reg);
if (HAS_PCH_SPLIT(dev))
intel_ironlake_hdmi_set_avi_infoframe(encoder);
else
intel_hdmi_set_avi_infoframe(encoder);
intel_hdmi_set_avi_infoframe(encoder);
}
static void intel_hdmi_dpms(struct drm_encoder *encoder, int mode)
@ -470,6 +522,11 @@ void intel_hdmi_init(struct drm_device *dev, int sdvox_reg)
intel_hdmi->sdvox_reg = sdvox_reg;
if (!HAS_PCH_SPLIT(dev))
intel_hdmi->write_infoframe = i9xx_write_infoframe;
else
intel_hdmi->write_infoframe = ironlake_write_infoframe;
drm_encoder_helper_add(&intel_encoder->base, &intel_hdmi_helper_funcs);
intel_hdmi_add_properties(intel_hdmi, connector);