/*
* Copyright © 2006-2011 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:
* jim liu <jim.liu@intel.com>
*
* FIXME:
* We should probably make this generic and share it with Medfield
*/
#include <drm/drmP.h>
#include <drm/drm.h>
#include <drm/drm_crtc.h>
#include <drm/drm_edid.h>
#include "psb_intel_drv.h"
#include "psb_drv.h"
#include "psb_intel_reg.h"
#include "cdv_device.h"
#include <linux/pm_runtime.h>
/* hdmi control bits */
#define HDMI_NULL_PACKETS_DURING_VSYNC (1 << 9)
#define HDMI_BORDER_ENABLE (1 << 7)
#define HDMI_AUDIO_ENABLE (1 << 6)
#define HDMI_VSYNC_ACTIVE_HIGH (1 << 4)
#define HDMI_HSYNC_ACTIVE_HIGH (1 << 3)
/* hdmi-b control bits */
#define HDMIB_PIPE_B_SELECT (1 << 30)
struct mid_intel_hdmi_priv {
u32 hdmi_reg;
u32 save_HDMIB;
bool has_hdmi_sink;
bool has_hdmi_audio;
/* Should set this when detect hotplug */
bool hdmi_device_connected;
struct mdfld_hdmi_i2c *i2c_bus;
struct i2c_adapter *hdmi_i2c_adapter; /* for control functions */
struct drm_device *dev;
};
static void cdv_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 gma_encoder *gma_encoder = to_gma_encoder(encoder);
struct mid_intel_hdmi_priv *hdmi_priv = gma_encoder->dev_priv;
u32 hdmib;
struct drm_crtc *crtc = encoder->crtc;
struct gma_crtc *gma_crtc = to_gma_crtc(crtc);
hdmib = (2 << 10);
if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC)
hdmib |= HDMI_VSYNC_ACTIVE_HIGH;
if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC)
hdmib |= HDMI_HSYNC_ACTIVE_HIGH;
if (gma_crtc->pipe == 1)
hdmib |= HDMIB_PIPE_B_SELECT;
if (hdmi_priv->has_hdmi_audio) {
hdmib |= HDMI_AUDIO_ENABLE;
hdmib |= HDMI_NULL_PACKETS_DURING_VSYNC;
}
REG_WRITE(hdmi_priv->hdmi_reg, hdmib);
REG_READ(hdmi_priv->hdmi_reg);
}
static bool cdv_hdmi_mode_fixup(struct drm_encoder *encoder,
const struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode)
{
return true;
}
static void cdv_hdmi_dpms(struct drm_encoder *encoder, int mode)
{
struct drm_device *dev = encoder->dev;
struct gma_encoder *gma_encoder = to_gma_encoder(encoder);
struct mid_intel_hdmi_priv *hdmi_priv = gma_encoder->dev_priv;
u32 hdmib;
hdmib = REG_READ(hdmi_priv->hdmi_reg);
if (mode != DRM_MODE_DPMS_ON)
REG_WRITE(hdmi_priv->hdmi_reg, hdmib & ~HDMIB_PORT_EN);
else
REG_WRITE(hdmi_priv->hdmi_reg, hdmib | HDMIB_PORT_EN);
REG_READ(hdmi_priv->hdmi_reg);
}
static void cdv_hdmi_save(struct drm_connector *connector)
{
struct drm_device *dev = connector->dev;
struct gma_encoder *gma_encoder = gma_attached_encoder(connector);
struct mid_intel_hdmi_priv *hdmi_priv = gma_encoder->dev_priv;
hdmi_priv->save_HDMIB = REG_READ(hdmi_priv->hdmi_reg);
}
static void cdv_hdmi_restore(struct drm_connector *connector)
{
struct drm_device *dev = connector->dev;
struct gma_encoder *gma_encoder = gma_attached_encoder(connector);
struct mid_intel_hdmi_priv *hdmi_priv = gma_encoder->dev_priv;
REG_WRITE(hdmi_priv->hdmi_reg, hdmi_priv->save_HDMIB);
REG_READ(hdmi_priv->hdmi_reg);
}
static enum drm_connector_status cdv_hdmi_detect(
struct drm_connector *connector, bool force)
{
struct gma_encoder *gma_encoder = gma_attached_encoder(connector);
struct mid_intel_hdmi_priv *hdmi_priv = gma_encoder->dev_priv;
struct edid *edid = NULL;
enum drm_connector_status status = connector_status_disconnected;
edid = drm_get_edid(connector, &gma_encoder->i2c_bus->adapter);
hdmi_priv->has_hdmi_sink = false;
hdmi_priv->has_hdmi_audio = false;
if (edid) {
if (edid->input & DRM_EDID_INPUT_DIGITAL) {
status = connector_status_connected;
hdmi_priv->has_hdmi_sink =
drm_detect_hdmi_monitor(edid);
hdmi_priv->has_hdmi_audio =
drm_detect_monitor_audio(edid);
}
kfree(edid);
}
return status;
}
static int cdv_hdmi_set_property(struct drm_connector *connector,
struct drm_property *property,
uint64_t value)
{
struct drm_encoder *encoder = connector->encoder;
if (!strcmp(property->name, "scaling mode") && encoder) {
struct gma_crtc *crtc = to_gma_crtc(encoder->crtc);
bool centre;
uint64_t curValue;
if (!crtc)
return -1;
switch (value) {
case DRM_MODE_SCALE_FULLSCREEN:
break;
case DRM_MODE_SCALE_NO_SCALE:
break;
case DRM_MODE_SCALE_ASPECT:
break;
default:
return -1;
}
if (drm_object_property_get_value(&connector->base,
property, &curValue))
return -1;
if (curValue == value)
return 0;
if (drm_object_property_set_value(&connector->base,
property, value))
return -1;
centre = (curValue == DRM_MODE_SCALE_NO_SCALE) ||
(value == DRM_MODE_SCALE_NO_SCALE);
if (crtc->saved_mode.hdisplay != 0 &&
crtc->saved_mode.vdisplay != 0) {
if (centre) {
if (!drm_crtc_helper_set_mode(encoder->crtc, &crtc->saved_mode,
encoder->crtc->x, encoder->crtc->y, encoder->crtc->fb))
return -1;
} else {
struct drm_encoder_helper_funcs *helpers
= encoder->helper_private;
helpers->mode_set(encoder, &crtc->saved_mode,
&crtc->saved_adjusted_mode);
}
}
}
return 0;
}
/*
* Return the list of HDMI DDC modes if available.
*/
static int cdv_hdmi_get_modes(struct drm_connector *connector)
{
struct gma_encoder *gma_encoder = gma_attached_encoder(connector);
struct edid *edid = NULL;
int ret = 0;
edid = drm_get_edid(connector, &gma_encoder->i2c_bus->adapter);
if (edid) {
drm_mode_connector_update_edid_property(connector, edid);
ret = drm_add_edid_modes(connector, edid);
kfree(edid);
}
return ret;
}
static int cdv_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_HIGH;
/* just in case */
if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
return MODE_NO_DBLESCAN;
/* just in case */
if (mode->flags & DRM_MODE_FLAG_INTERLACE)
return MODE_NO_INTERLACE;
return MODE_OK;
}
static void cdv_hdmi_destroy(struct drm_connector *connector)
{
struct gma_encoder *gma_encoder = gma_attached_encoder(connector);
if (gma_encoder->i2c_bus)
psb_intel_i2c_destroy(gma_encoder->i2c_bus);
drm_sysfs_connector_remove(connector);
drm_connector_cleanup(connector);
kfree(connector);
}
static const struct drm_encoder_helper_funcs cdv_hdmi_helper_funcs = {
.dpms = cdv_hdmi_dpms,
.mode_fixup = cdv_hdmi_mode_fixup,
.prepare = gma_encoder_prepare,
.mode_set = cdv_hdmi_mode_set,
.commit = gma_encoder_commit,
};
static const struct drm_connector_helper_funcs
cdv_hdmi_connector_helper_funcs = {
.get_modes = cdv_hdmi_get_modes,
.mode_valid = cdv_hdmi_mode_valid,
.best_encoder = gma_best_encoder,
};
static const struct drm_connector_funcs cdv_hdmi_connector_funcs = {
.dpms = drm_helper_connector_dpms,
.save = cdv_hdmi_save,
.restore = cdv_hdmi_restore,
.detect = cdv_hdmi_detect,
.fill_modes = drm_helper_probe_single_connector_modes,
.set_property = cdv_hdmi_set_property,
.destroy = cdv_hdmi_destroy,
};
void cdv_hdmi_init(struct drm_device *dev,
struct psb_intel_mode_device *mode_dev, int reg)
{
struct gma_encoder *gma_encoder;
struct gma_connector *gma_connector;
struct drm_connector *connector;
struct drm_encoder *encoder;
struct mid_intel_hdmi_priv *hdmi_priv;
int ddc_bus;
gma_encoder = kzalloc(sizeof(struct gma_encoder), GFP_KERNEL);
if (!gma_encoder)
return;
gma_connector = kzalloc(sizeof(struct gma_connector),
GFP_KERNEL);
if (!gma_connector)
goto err_connector;
hdmi_priv = kzalloc(sizeof(struct mid_intel_hdmi_priv), GFP_KERNEL);
if (!hdmi_priv)
goto err_priv;
connector = &gma_connector->base;
connector->polled = DRM_CONNECTOR_POLL_HPD;
encoder = &gma_encoder->base;
drm_connector_init(dev, connector,
&cdv_hdmi_connector_funcs,
DRM_MODE_CONNECTOR_DVID);
drm_encoder_init(dev, encoder, &psb_intel_lvds_enc_funcs,
DRM_MODE_ENCODER_TMDS);
gma_connector_attach_encoder(gma_connector, gma_encoder);
gma_encoder->type = INTEL_OUTPUT_HDMI;
hdmi_priv->hdmi_reg = reg;
hdmi_priv->has_hdmi_sink = false;
gma_encoder->dev_priv = hdmi_priv;
drm_encoder_helper_add(encoder, &cdv_hdmi_helper_funcs);
drm_connector_helper_add(connector,
&cdv_hdmi_connector_helper_funcs);
connector->display_info.subpixel_order = SubPixelHorizontalRGB;
connector->interlace_allowed = false;
connector->doublescan_allowed = false;
drm_object_attach_property(&connector->base,
dev->mode_config.scaling_mode_property,
DRM_MODE_SCALE_FULLSCREEN);
switch (reg) {
case SDVOB:
ddc_bus = GPIOE;
gma_encoder->ddi_select = DDI0_SELECT;
break;
case SDVOC:
ddc_bus = GPIOD;
gma_encoder->ddi_select = DDI1_SELECT;
break;
default:
DRM_ERROR("unknown reg 0x%x for HDMI\n", reg);
goto failed_ddc;
break;
}
gma_encoder->i2c_bus = psb_intel_i2c_create(dev,
ddc_bus, (reg == SDVOB) ? "HDMIB" : "HDMIC");
if (!gma_encoder->i2c_bus) {
dev_err(dev->dev, "No ddc adapter available!\n");
goto failed_ddc;
}
hdmi_priv->hdmi_i2c_adapter = &(gma_encoder->i2c_bus->adapter);
hdmi_priv->dev = dev;
drm_sysfs_connector_add(connector);
return;
failed_ddc:
drm_encoder_cleanup(encoder);
drm_connector_cleanup(connector);
err_priv:
kfree(gma_connector);
err_connector:
kfree(gma_encoder);
}
