linux/drivers/gpu/drm/i915/intel_hdmi.c
Daniel Vetter 08d644add0 drm/i915: add port parameter to intel_hdmi_init
Instead of having a giant if cascade to figure this out according to
the passed-in register. We could do quite a bit more cleaning up and
all by using the port at more places, but I think this should be part
of a bigger rework to introduce a struct intel_digital_port which
would keep track of all these things. I guess this will be part of
some haswell-DP-induced refactoring.

For now this rips out the big cascade, which is what annoyed me so
much.

v2: Add port variable name back for the func decl (I've tried to trick
myself below the 80 char limit).

Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2012-07-25 18:23:47 +02:00

986 lines
26 KiB
C

/*
* Copyright 2006 Dave Airlie <airlied@linux.ie>
* Copyright © 2006-2009 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* Authors:
* Eric Anholt <eric@anholt.net>
* Jesse Barnes <jesse.barnes@intel.com>
*/
#include <linux/i2c.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include "drmP.h"
#include "drm.h"
#include "drm_crtc.h"
#include "drm_edid.h"
#include "intel_drv.h"
#include "i915_drm.h"
#include "i915_drv.h"
static void
assert_hdmi_port_disabled(struct intel_hdmi *intel_hdmi)
{
struct drm_device *dev = intel_hdmi->base.base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
uint32_t enabled_bits;
enabled_bits = IS_HASWELL(dev) ? DDI_BUF_CTL_ENABLE : SDVO_ENABLE;
WARN(I915_READ(intel_hdmi->sdvox_reg) & enabled_bits,
"HDMI port enabled, expecting disabled\n");
}
struct intel_hdmi *enc_to_intel_hdmi(struct drm_encoder *encoder)
{
return container_of(encoder, struct intel_hdmi, base.base);
}
static struct intel_hdmi *intel_attached_hdmi(struct drm_connector *connector)
{
return container_of(intel_attached_encoder(connector),
struct intel_hdmi, base);
}
void intel_dip_infoframe_csum(struct dip_infoframe *frame)
{
uint8_t *data = (uint8_t *)frame;
uint8_t sum = 0;
unsigned i;
frame->checksum = 0;
frame->ecc = 0;
for (i = 0; i < frame->len + DIP_HEADER_SIZE; i++)
sum += data[i];
frame->checksum = 0x100 - sum;
}
static u32 g4x_infoframe_index(struct dip_infoframe *frame)
{
switch (frame->type) {
case DIP_TYPE_AVI:
return VIDEO_DIP_SELECT_AVI;
case DIP_TYPE_SPD:
return VIDEO_DIP_SELECT_SPD;
default:
DRM_DEBUG_DRIVER("unknown info frame type %d\n", frame->type);
return 0;
}
}
static u32 g4x_infoframe_enable(struct dip_infoframe *frame)
{
switch (frame->type) {
case DIP_TYPE_AVI:
return VIDEO_DIP_ENABLE_AVI;
case DIP_TYPE_SPD:
return VIDEO_DIP_ENABLE_SPD;
default:
DRM_DEBUG_DRIVER("unknown info frame type %d\n", frame->type);
return 0;
}
}
static u32 hsw_infoframe_enable(struct dip_infoframe *frame)
{
switch (frame->type) {
case DIP_TYPE_AVI:
return VIDEO_DIP_ENABLE_AVI_HSW;
case DIP_TYPE_SPD:
return VIDEO_DIP_ENABLE_SPD_HSW;
default:
DRM_DEBUG_DRIVER("unknown info frame type %d\n", frame->type);
return 0;
}
}
static u32 hsw_infoframe_data_reg(struct dip_infoframe *frame, enum pipe pipe)
{
switch (frame->type) {
case DIP_TYPE_AVI:
return HSW_TVIDEO_DIP_AVI_DATA(pipe);
case DIP_TYPE_SPD:
return HSW_TVIDEO_DIP_SPD_DATA(pipe);
default:
DRM_DEBUG_DRIVER("unknown info frame type %d\n", frame->type);
return 0;
}
}
static void g4x_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;
u32 val = I915_READ(VIDEO_DIP_CTL);
unsigned i, len = DIP_HEADER_SIZE + frame->len;
WARN(!(val & VIDEO_DIP_ENABLE), "Writing DIP with CTL reg disabled\n");
val &= ~(VIDEO_DIP_SELECT_MASK | 0xf); /* clear DIP data offset */
val |= g4x_infoframe_index(frame);
val &= ~g4x_infoframe_enable(frame);
I915_WRITE(VIDEO_DIP_CTL, val);
mmiowb();
for (i = 0; i < len; i += 4) {
I915_WRITE(VIDEO_DIP_DATA, *data);
data++;
}
mmiowb();
val |= g4x_infoframe_enable(frame);
val &= ~VIDEO_DIP_FREQ_MASK;
val |= VIDEO_DIP_FREQ_VSYNC;
I915_WRITE(VIDEO_DIP_CTL, val);
POSTING_READ(VIDEO_DIP_CTL);
}
static void ibx_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_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
int reg = TVIDEO_DIP_CTL(intel_crtc->pipe);
unsigned i, len = DIP_HEADER_SIZE + frame->len;
u32 val = I915_READ(reg);
WARN(!(val & VIDEO_DIP_ENABLE), "Writing DIP with CTL reg disabled\n");
val &= ~(VIDEO_DIP_SELECT_MASK | 0xf); /* clear DIP data offset */
val |= g4x_infoframe_index(frame);
val &= ~g4x_infoframe_enable(frame);
I915_WRITE(reg, val);
mmiowb();
for (i = 0; i < len; i += 4) {
I915_WRITE(TVIDEO_DIP_DATA(intel_crtc->pipe), *data);
data++;
}
mmiowb();
val |= g4x_infoframe_enable(frame);
val &= ~VIDEO_DIP_FREQ_MASK;
val |= VIDEO_DIP_FREQ_VSYNC;
I915_WRITE(reg, val);
POSTING_READ(reg);
}
static void cpt_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_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
int reg = TVIDEO_DIP_CTL(intel_crtc->pipe);
unsigned i, len = DIP_HEADER_SIZE + frame->len;
u32 val = I915_READ(reg);
WARN(!(val & VIDEO_DIP_ENABLE), "Writing DIP with CTL reg disabled\n");
val &= ~(VIDEO_DIP_SELECT_MASK | 0xf); /* clear DIP data offset */
val |= g4x_infoframe_index(frame);
/* The DIP control register spec says that we need to update the AVI
* infoframe without clearing its enable bit */
if (frame->type != DIP_TYPE_AVI)
val &= ~g4x_infoframe_enable(frame);
I915_WRITE(reg, val);
mmiowb();
for (i = 0; i < len; i += 4) {
I915_WRITE(TVIDEO_DIP_DATA(intel_crtc->pipe), *data);
data++;
}
mmiowb();
val |= g4x_infoframe_enable(frame);
val &= ~VIDEO_DIP_FREQ_MASK;
val |= VIDEO_DIP_FREQ_VSYNC;
I915_WRITE(reg, val);
POSTING_READ(reg);
}
static void vlv_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_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
int reg = VLV_TVIDEO_DIP_CTL(intel_crtc->pipe);
unsigned i, len = DIP_HEADER_SIZE + frame->len;
u32 val = I915_READ(reg);
WARN(!(val & VIDEO_DIP_ENABLE), "Writing DIP with CTL reg disabled\n");
val &= ~(VIDEO_DIP_SELECT_MASK | 0xf); /* clear DIP data offset */
val |= g4x_infoframe_index(frame);
val &= ~g4x_infoframe_enable(frame);
I915_WRITE(reg, val);
mmiowb();
for (i = 0; i < len; i += 4) {
I915_WRITE(VLV_TVIDEO_DIP_DATA(intel_crtc->pipe), *data);
data++;
}
mmiowb();
val |= g4x_infoframe_enable(frame);
val &= ~VIDEO_DIP_FREQ_MASK;
val |= VIDEO_DIP_FREQ_VSYNC;
I915_WRITE(reg, val);
POSTING_READ(reg);
}
static void hsw_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_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
u32 ctl_reg = HSW_TVIDEO_DIP_CTL(intel_crtc->pipe);
u32 data_reg = hsw_infoframe_data_reg(frame, intel_crtc->pipe);
unsigned int i, len = DIP_HEADER_SIZE + frame->len;
u32 val = I915_READ(ctl_reg);
if (data_reg == 0)
return;
val &= ~hsw_infoframe_enable(frame);
I915_WRITE(ctl_reg, val);
mmiowb();
for (i = 0; i < len; i += 4) {
I915_WRITE(data_reg + i, *data);
data++;
}
mmiowb();
val |= hsw_infoframe_enable(frame);
I915_WRITE(ctl_reg, val);
POSTING_READ(ctl_reg);
}
static void intel_set_infoframe(struct drm_encoder *encoder,
struct dip_infoframe *frame)
{
struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
intel_dip_infoframe_csum(frame);
intel_hdmi->write_infoframe(encoder, frame);
}
static void intel_hdmi_set_avi_infoframe(struct drm_encoder *encoder,
struct drm_display_mode *adjusted_mode)
{
struct dip_infoframe avi_if = {
.type = DIP_TYPE_AVI,
.ver = DIP_VERSION_AVI,
.len = DIP_LEN_AVI,
};
if (adjusted_mode->flags & DRM_MODE_FLAG_DBLCLK)
avi_if.body.avi.YQ_CN_PR |= DIP_AVI_PR_2;
intel_set_infoframe(encoder, &avi_if);
}
static void intel_hdmi_set_spd_infoframe(struct drm_encoder *encoder)
{
struct dip_infoframe spd_if;
memset(&spd_if, 0, sizeof(spd_if));
spd_if.type = DIP_TYPE_SPD;
spd_if.ver = DIP_VERSION_SPD;
spd_if.len = DIP_LEN_SPD;
strcpy(spd_if.body.spd.vn, "Intel");
strcpy(spd_if.body.spd.pd, "Integrated gfx");
spd_if.body.spd.sdi = DIP_SPD_PC;
intel_set_infoframe(encoder, &spd_if);
}
static void g4x_set_infoframes(struct drm_encoder *encoder,
struct drm_display_mode *adjusted_mode)
{
struct drm_i915_private *dev_priv = encoder->dev->dev_private;
struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
u32 reg = VIDEO_DIP_CTL;
u32 val = I915_READ(reg);
u32 port;
assert_hdmi_port_disabled(intel_hdmi);
/* If the registers were not initialized yet, they might be zeroes,
* which means we're selecting the AVI DIP and we're setting its
* frequency to once. This seems to really confuse the HW and make
* things stop working (the register spec says the AVI always needs to
* be sent every VSync). So here we avoid writing to the register more
* than we need and also explicitly select the AVI DIP and explicitly
* set its frequency to every VSync. Avoiding to write it twice seems to
* be enough to solve the problem, but being defensive shouldn't hurt us
* either. */
val |= VIDEO_DIP_SELECT_AVI | VIDEO_DIP_FREQ_VSYNC;
if (!intel_hdmi->has_hdmi_sink) {
if (!(val & VIDEO_DIP_ENABLE))
return;
val &= ~VIDEO_DIP_ENABLE;
I915_WRITE(reg, val);
POSTING_READ(reg);
return;
}
switch (intel_hdmi->sdvox_reg) {
case SDVOB:
port = VIDEO_DIP_PORT_B;
break;
case SDVOC:
port = VIDEO_DIP_PORT_C;
break;
default:
return;
}
if (port != (val & VIDEO_DIP_PORT_MASK)) {
if (val & VIDEO_DIP_ENABLE) {
val &= ~VIDEO_DIP_ENABLE;
I915_WRITE(reg, val);
POSTING_READ(reg);
}
val &= ~VIDEO_DIP_PORT_MASK;
val |= port;
}
val |= VIDEO_DIP_ENABLE;
val &= ~VIDEO_DIP_ENABLE_VENDOR;
I915_WRITE(reg, val);
POSTING_READ(reg);
intel_hdmi_set_avi_infoframe(encoder, adjusted_mode);
intel_hdmi_set_spd_infoframe(encoder);
}
static void ibx_set_infoframes(struct drm_encoder *encoder,
struct drm_display_mode *adjusted_mode)
{
struct drm_i915_private *dev_priv = encoder->dev->dev_private;
struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
u32 reg = TVIDEO_DIP_CTL(intel_crtc->pipe);
u32 val = I915_READ(reg);
u32 port;
assert_hdmi_port_disabled(intel_hdmi);
/* See the big comment in g4x_set_infoframes() */
val |= VIDEO_DIP_SELECT_AVI | VIDEO_DIP_FREQ_VSYNC;
if (!intel_hdmi->has_hdmi_sink) {
if (!(val & VIDEO_DIP_ENABLE))
return;
val &= ~VIDEO_DIP_ENABLE;
I915_WRITE(reg, val);
POSTING_READ(reg);
return;
}
switch (intel_hdmi->sdvox_reg) {
case HDMIB:
port = VIDEO_DIP_PORT_B;
break;
case HDMIC:
port = VIDEO_DIP_PORT_C;
break;
case HDMID:
port = VIDEO_DIP_PORT_D;
break;
default:
return;
}
if (port != (val & VIDEO_DIP_PORT_MASK)) {
if (val & VIDEO_DIP_ENABLE) {
val &= ~VIDEO_DIP_ENABLE;
I915_WRITE(reg, val);
POSTING_READ(reg);
}
val &= ~VIDEO_DIP_PORT_MASK;
val |= port;
}
val |= VIDEO_DIP_ENABLE;
val &= ~(VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_GAMUT |
VIDEO_DIP_ENABLE_GCP);
I915_WRITE(reg, val);
POSTING_READ(reg);
intel_hdmi_set_avi_infoframe(encoder, adjusted_mode);
intel_hdmi_set_spd_infoframe(encoder);
}
static void cpt_set_infoframes(struct drm_encoder *encoder,
struct drm_display_mode *adjusted_mode)
{
struct drm_i915_private *dev_priv = encoder->dev->dev_private;
struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
u32 reg = TVIDEO_DIP_CTL(intel_crtc->pipe);
u32 val = I915_READ(reg);
assert_hdmi_port_disabled(intel_hdmi);
/* See the big comment in g4x_set_infoframes() */
val |= VIDEO_DIP_SELECT_AVI | VIDEO_DIP_FREQ_VSYNC;
if (!intel_hdmi->has_hdmi_sink) {
if (!(val & VIDEO_DIP_ENABLE))
return;
val &= ~(VIDEO_DIP_ENABLE | VIDEO_DIP_ENABLE_AVI);
I915_WRITE(reg, val);
POSTING_READ(reg);
return;
}
/* Set both together, unset both together: see the spec. */
val |= VIDEO_DIP_ENABLE | VIDEO_DIP_ENABLE_AVI;
val &= ~(VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_GAMUT |
VIDEO_DIP_ENABLE_GCP);
I915_WRITE(reg, val);
POSTING_READ(reg);
intel_hdmi_set_avi_infoframe(encoder, adjusted_mode);
intel_hdmi_set_spd_infoframe(encoder);
}
static void vlv_set_infoframes(struct drm_encoder *encoder,
struct drm_display_mode *adjusted_mode)
{
struct drm_i915_private *dev_priv = encoder->dev->dev_private;
struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
u32 reg = VLV_TVIDEO_DIP_CTL(intel_crtc->pipe);
u32 val = I915_READ(reg);
assert_hdmi_port_disabled(intel_hdmi);
/* See the big comment in g4x_set_infoframes() */
val |= VIDEO_DIP_SELECT_AVI | VIDEO_DIP_FREQ_VSYNC;
if (!intel_hdmi->has_hdmi_sink) {
if (!(val & VIDEO_DIP_ENABLE))
return;
val &= ~VIDEO_DIP_ENABLE;
I915_WRITE(reg, val);
POSTING_READ(reg);
return;
}
val |= VIDEO_DIP_ENABLE;
val &= ~(VIDEO_DIP_ENABLE_VENDOR | VIDEO_DIP_ENABLE_GAMUT |
VIDEO_DIP_ENABLE_GCP);
I915_WRITE(reg, val);
POSTING_READ(reg);
intel_hdmi_set_avi_infoframe(encoder, adjusted_mode);
intel_hdmi_set_spd_infoframe(encoder);
}
static void hsw_set_infoframes(struct drm_encoder *encoder,
struct drm_display_mode *adjusted_mode)
{
struct drm_i915_private *dev_priv = encoder->dev->dev_private;
struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
u32 reg = HSW_TVIDEO_DIP_CTL(intel_crtc->pipe);
u32 val = I915_READ(reg);
assert_hdmi_port_disabled(intel_hdmi);
if (!intel_hdmi->has_hdmi_sink) {
I915_WRITE(reg, 0);
POSTING_READ(reg);
return;
}
val &= ~(VIDEO_DIP_ENABLE_VSC_HSW | VIDEO_DIP_ENABLE_GCP_HSW |
VIDEO_DIP_ENABLE_VS_HSW | VIDEO_DIP_ENABLE_GMP_HSW);
I915_WRITE(reg, val);
POSTING_READ(reg);
intel_hdmi_set_avi_infoframe(encoder, adjusted_mode);
intel_hdmi_set_spd_infoframe(encoder);
}
static void intel_hdmi_mode_set(struct drm_encoder *encoder,
struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode)
{
struct drm_device *dev = encoder->dev;
struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
u32 sdvox;
sdvox = SDVO_ENCODING_HDMI;
if (!HAS_PCH_SPLIT(dev))
sdvox |= intel_hdmi->color_range;
if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC)
sdvox |= SDVO_VSYNC_ACTIVE_HIGH;
if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC)
sdvox |= SDVO_HSYNC_ACTIVE_HIGH;
if (intel_crtc->bpp > 24)
sdvox |= COLOR_FORMAT_12bpc;
else
sdvox |= COLOR_FORMAT_8bpc;
/* Required on CPT */
if (intel_hdmi->has_hdmi_sink && HAS_PCH_CPT(dev))
sdvox |= HDMI_MODE_SELECT;
if (intel_hdmi->has_audio) {
DRM_DEBUG_DRIVER("Enabling HDMI audio on pipe %c\n",
pipe_name(intel_crtc->pipe));
sdvox |= SDVO_AUDIO_ENABLE;
sdvox |= SDVO_NULL_PACKETS_DURING_VSYNC;
intel_write_eld(encoder, adjusted_mode);
}
if (HAS_PCH_CPT(dev))
sdvox |= PORT_TRANS_SEL_CPT(intel_crtc->pipe);
else if (intel_crtc->pipe == PIPE_B)
sdvox |= SDVO_PIPE_B_SELECT;
I915_WRITE(intel_hdmi->sdvox_reg, sdvox);
POSTING_READ(intel_hdmi->sdvox_reg);
intel_hdmi->set_infoframes(encoder, adjusted_mode);
}
static void intel_hdmi_dpms(struct drm_encoder *encoder, int mode)
{
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 temp;
u32 enable_bits = SDVO_ENABLE;
if (intel_hdmi->has_audio)
enable_bits |= SDVO_AUDIO_ENABLE;
temp = I915_READ(intel_hdmi->sdvox_reg);
/* HW workaround for IBX, we need to move the port to transcoder A
* before disabling it. */
if (HAS_PCH_IBX(dev)) {
struct drm_crtc *crtc = encoder->crtc;
int pipe = crtc ? to_intel_crtc(crtc)->pipe : -1;
if (mode != DRM_MODE_DPMS_ON) {
if (temp & SDVO_PIPE_B_SELECT) {
temp &= ~SDVO_PIPE_B_SELECT;
I915_WRITE(intel_hdmi->sdvox_reg, temp);
POSTING_READ(intel_hdmi->sdvox_reg);
/* Again we need to write this twice. */
I915_WRITE(intel_hdmi->sdvox_reg, temp);
POSTING_READ(intel_hdmi->sdvox_reg);
/* Transcoder selection bits only update
* effectively on vblank. */
if (crtc)
intel_wait_for_vblank(dev, pipe);
else
msleep(50);
}
} else {
/* Restore the transcoder select bit. */
if (pipe == PIPE_B)
enable_bits |= SDVO_PIPE_B_SELECT;
}
}
/* HW workaround, need to toggle enable bit off and on for 12bpc, but
* we do this anyway which shows more stable in testing.
*/
if (HAS_PCH_SPLIT(dev)) {
I915_WRITE(intel_hdmi->sdvox_reg, temp & ~SDVO_ENABLE);
POSTING_READ(intel_hdmi->sdvox_reg);
}
if (mode != DRM_MODE_DPMS_ON) {
temp &= ~enable_bits;
} else {
temp |= enable_bits;
}
I915_WRITE(intel_hdmi->sdvox_reg, temp);
POSTING_READ(intel_hdmi->sdvox_reg);
/* HW workaround, need to write this twice for issue that may result
* in first write getting masked.
*/
if (HAS_PCH_SPLIT(dev)) {
I915_WRITE(intel_hdmi->sdvox_reg, temp);
POSTING_READ(intel_hdmi->sdvox_reg);
}
}
static int intel_hdmi_mode_valid(struct drm_connector *connector,
struct drm_display_mode *mode)
{
if (mode->clock > 165000)
return MODE_CLOCK_HIGH;
if (mode->clock < 20000)
return MODE_CLOCK_LOW;
if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
return MODE_NO_DBLESCAN;
return MODE_OK;
}
static bool intel_hdmi_mode_fixup(struct drm_encoder *encoder,
const struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode)
{
return true;
}
static bool g4x_hdmi_connected(struct intel_hdmi *intel_hdmi)
{
struct drm_device *dev = intel_hdmi->base.base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
uint32_t bit;
switch (intel_hdmi->sdvox_reg) {
case SDVOB:
bit = HDMIB_HOTPLUG_LIVE_STATUS;
break;
case SDVOC:
bit = HDMIC_HOTPLUG_LIVE_STATUS;
break;
default:
bit = 0;
break;
}
return I915_READ(PORT_HOTPLUG_STAT) & bit;
}
static enum drm_connector_status
intel_hdmi_detect(struct drm_connector *connector, bool force)
{
struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
struct drm_i915_private *dev_priv = connector->dev->dev_private;
struct edid *edid;
enum drm_connector_status status = connector_status_disconnected;
if (IS_G4X(connector->dev) && !g4x_hdmi_connected(intel_hdmi))
return status;
intel_hdmi->has_hdmi_sink = false;
intel_hdmi->has_audio = false;
edid = drm_get_edid(connector,
intel_gmbus_get_adapter(dev_priv,
intel_hdmi->ddc_bus));
if (edid) {
if (edid->input & DRM_EDID_INPUT_DIGITAL) {
status = connector_status_connected;
if (intel_hdmi->force_audio != HDMI_AUDIO_OFF_DVI)
intel_hdmi->has_hdmi_sink =
drm_detect_hdmi_monitor(edid);
intel_hdmi->has_audio = drm_detect_monitor_audio(edid);
}
connector->display_info.raw_edid = NULL;
kfree(edid);
}
if (status == connector_status_connected) {
if (intel_hdmi->force_audio != HDMI_AUDIO_AUTO)
intel_hdmi->has_audio =
(intel_hdmi->force_audio == HDMI_AUDIO_ON);
}
return status;
}
static int intel_hdmi_get_modes(struct drm_connector *connector)
{
struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
struct drm_i915_private *dev_priv = connector->dev->dev_private;
/* We should parse the EDID data and find out if it's an HDMI sink so
* we can send audio to it.
*/
return intel_ddc_get_modes(connector,
intel_gmbus_get_adapter(dev_priv,
intel_hdmi->ddc_bus));
}
static bool
intel_hdmi_detect_audio(struct drm_connector *connector)
{
struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
struct drm_i915_private *dev_priv = connector->dev->dev_private;
struct edid *edid;
bool has_audio = false;
edid = drm_get_edid(connector,
intel_gmbus_get_adapter(dev_priv,
intel_hdmi->ddc_bus));
if (edid) {
if (edid->input & DRM_EDID_INPUT_DIGITAL)
has_audio = drm_detect_monitor_audio(edid);
connector->display_info.raw_edid = NULL;
kfree(edid);
}
return has_audio;
}
static int
intel_hdmi_set_property(struct drm_connector *connector,
struct drm_property *property,
uint64_t val)
{
struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
struct drm_i915_private *dev_priv = connector->dev->dev_private;
int ret;
ret = drm_connector_property_set_value(connector, property, val);
if (ret)
return ret;
if (property == dev_priv->force_audio_property) {
enum hdmi_force_audio i = val;
bool has_audio;
if (i == intel_hdmi->force_audio)
return 0;
intel_hdmi->force_audio = i;
if (i == HDMI_AUDIO_AUTO)
has_audio = intel_hdmi_detect_audio(connector);
else
has_audio = (i == HDMI_AUDIO_ON);
if (i == HDMI_AUDIO_OFF_DVI)
intel_hdmi->has_hdmi_sink = 0;
intel_hdmi->has_audio = has_audio;
goto done;
}
if (property == dev_priv->broadcast_rgb_property) {
if (val == !!intel_hdmi->color_range)
return 0;
intel_hdmi->color_range = val ? SDVO_COLOR_RANGE_16_235 : 0;
goto done;
}
return -EINVAL;
done:
if (intel_hdmi->base.base.crtc) {
struct drm_crtc *crtc = intel_hdmi->base.base.crtc;
drm_crtc_helper_set_mode(crtc, &crtc->mode,
crtc->x, crtc->y,
crtc->fb);
}
return 0;
}
static void intel_hdmi_destroy(struct drm_connector *connector)
{
drm_sysfs_connector_remove(connector);
drm_connector_cleanup(connector);
kfree(connector);
}
static const struct drm_encoder_helper_funcs intel_hdmi_helper_funcs_hsw = {
.dpms = intel_ddi_dpms,
.mode_fixup = intel_hdmi_mode_fixup,
.prepare = intel_encoder_prepare,
.mode_set = intel_ddi_mode_set,
.commit = intel_encoder_commit,
};
static const struct drm_encoder_helper_funcs intel_hdmi_helper_funcs = {
.dpms = intel_hdmi_dpms,
.mode_fixup = intel_hdmi_mode_fixup,
.prepare = intel_encoder_prepare,
.mode_set = intel_hdmi_mode_set,
.commit = intel_encoder_commit,
};
static const struct drm_connector_funcs intel_hdmi_connector_funcs = {
.dpms = drm_helper_connector_dpms,
.detect = intel_hdmi_detect,
.fill_modes = drm_helper_probe_single_connector_modes,
.set_property = intel_hdmi_set_property,
.destroy = intel_hdmi_destroy,
};
static const struct drm_connector_helper_funcs intel_hdmi_connector_helper_funcs = {
.get_modes = intel_hdmi_get_modes,
.mode_valid = intel_hdmi_mode_valid,
.best_encoder = intel_best_encoder,
};
static const struct drm_encoder_funcs intel_hdmi_enc_funcs = {
.destroy = intel_encoder_destroy,
};
static void
intel_hdmi_add_properties(struct intel_hdmi *intel_hdmi, struct drm_connector *connector)
{
intel_attach_force_audio_property(connector);
intel_attach_broadcast_rgb_property(connector);
}
void intel_hdmi_init(struct drm_device *dev, int sdvox_reg, enum port port)
{
struct drm_i915_private *dev_priv = dev->dev_private;
struct drm_connector *connector;
struct intel_encoder *intel_encoder;
struct intel_connector *intel_connector;
struct intel_hdmi *intel_hdmi;
intel_hdmi = kzalloc(sizeof(struct intel_hdmi), GFP_KERNEL);
if (!intel_hdmi)
return;
intel_connector = kzalloc(sizeof(struct intel_connector), GFP_KERNEL);
if (!intel_connector) {
kfree(intel_hdmi);
return;
}
intel_encoder = &intel_hdmi->base;
drm_encoder_init(dev, &intel_encoder->base, &intel_hdmi_enc_funcs,
DRM_MODE_ENCODER_TMDS);
connector = &intel_connector->base;
drm_connector_init(dev, connector, &intel_hdmi_connector_funcs,
DRM_MODE_CONNECTOR_HDMIA);
drm_connector_helper_add(connector, &intel_hdmi_connector_helper_funcs);
intel_encoder->type = INTEL_OUTPUT_HDMI;
connector->polled = DRM_CONNECTOR_POLL_HPD;
connector->interlace_allowed = 1;
connector->doublescan_allowed = 0;
intel_encoder->crtc_mask = (1 << 0) | (1 << 1) | (1 << 2);
intel_encoder->cloneable = false;
intel_hdmi->ddi_port = port;
switch (port) {
case PORT_B:
intel_hdmi->ddc_bus = GMBUS_PORT_DPB;
dev_priv->hotplug_supported_mask |= HDMIB_HOTPLUG_INT_STATUS;
break;
case PORT_C:
intel_hdmi->ddc_bus = GMBUS_PORT_DPC;
dev_priv->hotplug_supported_mask |= HDMIC_HOTPLUG_INT_STATUS;
break;
case PORT_D:
intel_hdmi->ddc_bus = GMBUS_PORT_DPD;
dev_priv->hotplug_supported_mask |= HDMID_HOTPLUG_INT_STATUS;
break;
case PORT_A:
/* Internal port only for eDP. */
default:
BUG();
}
intel_hdmi->sdvox_reg = sdvox_reg;
if (!HAS_PCH_SPLIT(dev)) {
intel_hdmi->write_infoframe = g4x_write_infoframe;
intel_hdmi->set_infoframes = g4x_set_infoframes;
} else if (IS_VALLEYVIEW(dev)) {
intel_hdmi->write_infoframe = vlv_write_infoframe;
intel_hdmi->set_infoframes = vlv_set_infoframes;
} else if (IS_HASWELL(dev)) {
intel_hdmi->write_infoframe = hsw_write_infoframe;
intel_hdmi->set_infoframes = hsw_set_infoframes;
} else if (HAS_PCH_IBX(dev)) {
intel_hdmi->write_infoframe = ibx_write_infoframe;
intel_hdmi->set_infoframes = ibx_set_infoframes;
} else {
intel_hdmi->write_infoframe = cpt_write_infoframe;
intel_hdmi->set_infoframes = cpt_set_infoframes;
}
if (IS_HASWELL(dev))
drm_encoder_helper_add(&intel_encoder->base, &intel_hdmi_helper_funcs_hsw);
else
drm_encoder_helper_add(&intel_encoder->base, &intel_hdmi_helper_funcs);
intel_hdmi_add_properties(intel_hdmi, connector);
intel_connector_attach_encoder(intel_connector, intel_encoder);
drm_sysfs_connector_add(connector);
/* For G4X desktop chip, PEG_BAND_GAP_DATA 3:0 must first be written
* 0xd. Failure to do so will result in spurious interrupts being
* generated on the port when a cable is not attached.
*/
if (IS_G4X(dev) && !IS_GM45(dev)) {
u32 temp = I915_READ(PEG_BAND_GAP_DATA);
I915_WRITE(PEG_BAND_GAP_DATA, (temp & ~0xf) | 0xd);
}
}