[linux-2.6-block.git] / drivers / gpu / drm / gma500 / cdv_intel_hdmi.c

/*
 * 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 <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 psb_intel_encoder *psb_intel_encoder = to_psb_intel_encoder(encoder);
	struct mid_intel_hdmi_priv *hdmi_priv = psb_intel_encoder->dev_priv;
	u32 hdmib;
	struct drm_crtc *crtc = encoder->crtc;
	struct psb_intel_crtc *intel_crtc = to_psb_intel_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 (intel_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,
				  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 psb_intel_encoder *psb_intel_encoder =
						to_psb_intel_encoder(encoder);
	struct mid_intel_hdmi_priv *hdmi_priv = psb_intel_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 psb_intel_encoder *psb_intel_encoder =
					psb_intel_attached_encoder(connector);
	struct mid_intel_hdmi_priv *hdmi_priv = psb_intel_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 psb_intel_encoder *psb_intel_encoder =
					psb_intel_attached_encoder(connector);
	struct mid_intel_hdmi_priv *hdmi_priv = psb_intel_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 psb_intel_encoder *psb_intel_encoder =
					psb_intel_attached_encoder(connector);
	struct psb_intel_connector *psb_intel_connector =
					to_psb_intel_connector(connector);
	struct mid_intel_hdmi_priv *hdmi_priv = psb_intel_encoder->dev_priv;
	struct edid *edid = NULL;
	enum drm_connector_status status = connector_status_disconnected;

	edid = drm_get_edid(connector, &psb_intel_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);
		}

		psb_intel_connector->base.display_info.raw_edid = NULL;
		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 psb_intel_crtc *crtc = to_psb_intel_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_connector_property_get_value(connector,
							property, &curValue))
			return -1;

		if (curValue == value)
			return 0;

		if (drm_connector_property_set_value(connector,
							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 psb_intel_encoder *psb_intel_encoder =
					psb_intel_attached_encoder(connector);
	struct edid *edid = NULL;
	int ret = 0;

	edid = drm_get_edid(connector, &psb_intel_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;

	/*
	 * FIXME: for now we limit the size to 1680x1050 on CDV, otherwise it
	 * will go beyond the stolen memory size allocated to the framebuffer
	 */
	if (mode->hdisplay > 1680)
		return MODE_PANEL;
	if (mode->vdisplay > 1050)
		return MODE_PANEL;
	return MODE_OK;
}

static void cdv_hdmi_destroy(struct drm_connector *connector)
{
	struct psb_intel_encoder *psb_intel_encoder =
					psb_intel_attached_encoder(connector);

	if (psb_intel_encoder->i2c_bus)
		psb_intel_i2c_destroy(psb_intel_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 = psb_intel_encoder_prepare,
	.mode_set = cdv_hdmi_mode_set,
	.commit = psb_intel_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 = psb_intel_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 psb_intel_encoder *psb_intel_encoder;
	struct psb_intel_connector *psb_intel_connector;
	struct drm_connector *connector;
	struct drm_encoder *encoder;
	struct mid_intel_hdmi_priv *hdmi_priv;
	int ddc_bus;

	psb_intel_encoder = kzalloc(sizeof(struct psb_intel_encoder),
				    GFP_KERNEL);

	if (!psb_intel_encoder)
		return;

	psb_intel_connector = kzalloc(sizeof(struct psb_intel_connector),
				      GFP_KERNEL);

	if (!psb_intel_connector)
		goto err_connector;

	hdmi_priv = kzalloc(sizeof(struct mid_intel_hdmi_priv), GFP_KERNEL);

	if (!hdmi_priv)
		goto err_priv;

	connector = &psb_intel_connector->base;
	encoder = &psb_intel_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);

	psb_intel_connector_attach_encoder(psb_intel_connector,
					   psb_intel_encoder);
	psb_intel_encoder->type = INTEL_OUTPUT_HDMI;
	hdmi_priv->hdmi_reg = reg;
	hdmi_priv->has_hdmi_sink = false;
	psb_intel_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_connector_attach_property(connector,
				      dev->mode_config.scaling_mode_property,
				      DRM_MODE_SCALE_FULLSCREEN);

	switch (reg) {
	case SDVOB:
		ddc_bus = GPIOE;
		break;
	case SDVOC:
		ddc_bus = GPIOD;
		break;
	default:
		DRM_ERROR("unknown reg 0x%x for HDMI\n", reg);
		goto failed_ddc;
		break;
	}

	psb_intel_encoder->i2c_bus = psb_intel_i2c_create(dev,
				ddc_bus, (reg == SDVOB) ? "HDMIB" : "HDMIC");

	if (!psb_intel_encoder->i2c_bus) {
		dev_err(dev->dev, "No ddc adapter available!\n");
		goto failed_ddc;
	}

	hdmi_priv->hdmi_i2c_adapter =
				&(psb_intel_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(psb_intel_connector);
err_connector:
	kfree(psb_intel_encoder);
}
Commit	Line	Data
6a227d5f AC	1	/*
	2	* Copyright © 2006-2011 Intel Corporation
	3	*
	4	* Permission is hereby granted, free of charge, to any person obtaining a
	5	* copy of this software and associated documentation files (the "Software"),
	6	* to deal in the Software without restriction, including without limitation
	7	* the rights to use, copy, modify, merge, publish, distribute, sublicense,
	8	* and/or sell copies of the Software, and to permit persons to whom the
	9	* Software is furnished to do so, subject to the following conditions:
	10	*
	11	* The above copyright notice and this permission notice (including the next
	12	* paragraph) shall be included in all copies or substantial portions of the
	13	* Software.
	14	*
	15	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	16	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	17	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	18	* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	19	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
	20	* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
	21	* DEALINGS IN THE SOFTWARE.
	22	*
	23	* Authors:
	24	* jim liu <jim.liu@intel.com>
	25	*
	26	* FIXME:
	27	* We should probably make this generic and share it with Medfield
	28	*/
	29
	30	#include <drm/drmP.h>
	31	#include <drm/drm.h>
	32	#include <drm/drm_crtc.h>
	33	#include <drm/drm_edid.h>
	34	#include "psb_intel_drv.h"
	35	#include "psb_drv.h"
	36	#include "psb_intel_reg.h"
	37	#include <linux/pm_runtime.h>
	38
	39	/* hdmi control bits */
	40	#define HDMI_NULL_PACKETS_DURING_VSYNC (1 << 9)
	41	#define HDMI_BORDER_ENABLE (1 << 7)
	42	#define HDMI_AUDIO_ENABLE (1 << 6)
	43	#define HDMI_VSYNC_ACTIVE_HIGH (1 << 4)
	44	#define HDMI_HSYNC_ACTIVE_HIGH (1 << 3)
	45	/* hdmi-b control bits */
	46	#define HDMIB_PIPE_B_SELECT (1 << 30)
	47
	48
	49	struct mid_intel_hdmi_priv {
	50	u32 hdmi_reg;
	51	u32 save_HDMIB;
	52	bool has_hdmi_sink;
	53	bool has_hdmi_audio;
	54	/* Should set this when detect hotplug */
	55	bool hdmi_device_connected;
	56	struct mdfld_hdmi_i2c *i2c_bus;
	57	struct i2c_adapter hdmi_i2c_adapter; / for control functions */
	58	struct drm_device *dev;
	59	};
	60
	61	static void cdv_hdmi_mode_set(struct drm_encoder *encoder,
	62	struct drm_display_mode *mode,
	63	struct drm_display_mode *adjusted_mode)
	64	{
65	struct drm_device *dev = encoder->dev;
a12d6a07 PJ	66	struct psb_intel_encoder *psb_intel_encoder = to_psb_intel_encoder(encoder);
a12d6a07 PJ	67	struct mid_intel_hdmi_priv *hdmi_priv = psb_intel_encoder->dev_priv;
6a227d5f AC	68	u32 hdmib;
	69	struct drm_crtc *crtc = encoder->crtc;
	70	struct psb_intel_crtc *intel_crtc = to_psb_intel_crtc(crtc);
	71
	72	hdmib = (2 << 10);
	73
	74	if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC)
	75	hdmib \|= HDMI_VSYNC_ACTIVE_HIGH;
	76	if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC)
	77	hdmib \|= HDMI_HSYNC_ACTIVE_HIGH;
	78
	79	if (intel_crtc->pipe == 1)
	80	hdmib \|= HDMIB_PIPE_B_SELECT;
	81
	82	if (hdmi_priv->has_hdmi_audio) {
	83	hdmib \|= HDMI_AUDIO_ENABLE;
	84	hdmib \|= HDMI_NULL_PACKETS_DURING_VSYNC;
	85	}
	86
	87	REG_WRITE(hdmi_priv->hdmi_reg, hdmib);
	88	REG_READ(hdmi_priv->hdmi_reg);
	89	}
	90
	91	static bool cdv_hdmi_mode_fixup(struct drm_encoder *encoder,
	92	struct drm_display_mode *mode,
	93	struct drm_display_mode *adjusted_mode)
	94	{
	95	return true;
	96	}
	97
	98	static void cdv_hdmi_dpms(struct drm_encoder *encoder, int mode)
	99	{
	100	struct drm_device *dev = encoder->dev;
a12d6a07 PJ	101	struct psb_intel_encoder *psb_intel_encoder =
	102	to_psb_intel_encoder(encoder);
	103	struct mid_intel_hdmi_priv *hdmi_priv = psb_intel_encoder->dev_priv;
6a227d5f AC	104	u32 hdmib;
	105
	106	hdmib = REG_READ(hdmi_priv->hdmi_reg);
	107
	108	if (mode != DRM_MODE_DPMS_ON)
	109	REG_WRITE(hdmi_priv->hdmi_reg, hdmib & ~HDMIB_PORT_EN);
	110	else
	111	REG_WRITE(hdmi_priv->hdmi_reg, hdmib \| HDMIB_PORT_EN);
	112	REG_READ(hdmi_priv->hdmi_reg);
	113	}
	114
	115	static void cdv_hdmi_save(struct drm_connector *connector)
	116	{
	117	struct drm_device *dev = connector->dev;
a12d6a07 PJ	118	struct psb_intel_encoder *psb_intel_encoder =
	119	psb_intel_attached_encoder(connector);
	120	struct mid_intel_hdmi_priv *hdmi_priv = psb_intel_encoder->dev_priv;
6a227d5f AC	121
	122	hdmi_priv->save_HDMIB = REG_READ(hdmi_priv->hdmi_reg);
	123	}
	124
	125	static void cdv_hdmi_restore(struct drm_connector *connector)
	126	{
	127	struct drm_device *dev = connector->dev;
a12d6a07 PJ	128	struct psb_intel_encoder *psb_intel_encoder =
	129	psb_intel_attached_encoder(connector);
	130	struct mid_intel_hdmi_priv *hdmi_priv = psb_intel_encoder->dev_priv;
6a227d5f AC	131
	132	REG_WRITE(hdmi_priv->hdmi_reg, hdmi_priv->save_HDMIB);
	133	REG_READ(hdmi_priv->hdmi_reg);
	134	}
	135
	136	static enum drm_connector_status cdv_hdmi_detect(
	137	struct drm_connector *connector, bool force)
	138	{
a12d6a07 PJ	139	struct psb_intel_encoder *psb_intel_encoder =
	140	psb_intel_attached_encoder(connector);
	141	struct psb_intel_connector *psb_intel_connector =
	142	to_psb_intel_connector(connector);
	143	struct mid_intel_hdmi_priv *hdmi_priv = psb_intel_encoder->dev_priv;
6a227d5f AC	144	struct edid *edid = NULL;
	145	enum drm_connector_status status = connector_status_disconnected;
	146
a12d6a07	147	edid = drm_get_edid(connector, &psb_intel_encoder->i2c_bus->adapter);
6a227d5f AC	148
	149	hdmi_priv->has_hdmi_sink = false;
	150	hdmi_priv->has_hdmi_audio = false;
	151	if (edid) {
	152	if (edid->input & DRM_EDID_INPUT_DIGITAL) {
	153	status = connector_status_connected;
	154	hdmi_priv->has_hdmi_sink =
	155	drm_detect_hdmi_monitor(edid);
	156	hdmi_priv->has_hdmi_audio =
	157	drm_detect_monitor_audio(edid);
	158	}
	159
a12d6a07	160	psb_intel_connector->base.display_info.raw_edid = NULL;
6a227d5f AC	161	kfree(edid);
	162	}
	163	return status;
	164	}
	165
	166	static int cdv_hdmi_set_property(struct drm_connector *connector,
	167	struct drm_property *property,
	168	uint64_t value)
	169	{
	170	struct drm_encoder *encoder = connector->encoder;
	171
	172	if (!strcmp(property->name, "scaling mode") && encoder) {
	173	struct psb_intel_crtc *crtc = to_psb_intel_crtc(encoder->crtc);
	174	bool centre;
	175	uint64_t curValue;
	176
	177	if (!crtc)
	178	return -1;
	179
	180	switch (value) {
	181	case DRM_MODE_SCALE_FULLSCREEN:
	182	break;
	183	case DRM_MODE_SCALE_NO_SCALE:
	184	break;
	185	case DRM_MODE_SCALE_ASPECT:
	186	break;
	187	default:
	188	return -1;
	189	}
	190
	191	if (drm_connector_property_get_value(connector,
	192	property, &curValue))
	193	return -1;
	194
	195	if (curValue == value)
	196	return 0;
	197
	198	if (drm_connector_property_set_value(connector,
	199	property, value))
	200	return -1;
	201
	202	centre = (curValue == DRM_MODE_SCALE_NO_SCALE) \|\|
	203	(value == DRM_MODE_SCALE_NO_SCALE);
	204
	205	if (crtc->saved_mode.hdisplay != 0 &&
	206	crtc->saved_mode.vdisplay != 0) {
	207	if (centre) {
	208	if (!drm_crtc_helper_set_mode(encoder->crtc, &crtc->saved_mode,
	209	encoder->crtc->x, encoder->crtc->y, encoder->crtc->fb))
	210	return -1;
	211	} else {
	212	struct drm_encoder_helper_funcs *helpers
	213	= encoder->helper_private;
	214	helpers->mode_set(encoder, &crtc->saved_mode,
	215	&crtc->saved_adjusted_mode);
	216	}
	217	}
	218	}
	219	return 0;
	220	}
	221
	222	/*
	223	* Return the list of HDMI DDC modes if available.
	224	*/
225	static int cdv_hdmi_get_modes(struct drm_connector *connector)
226	{
a12d6a07 PJ	227	struct psb_intel_encoder *psb_intel_encoder =
a12d6a07 PJ	228	psb_intel_attached_encoder(connector);
6a227d5f AC	229	struct edid *edid = NULL;
	230	int ret = 0;
	231
a12d6a07	232	edid = drm_get_edid(connector, &psb_intel_encoder->i2c_bus->adapter);
6a227d5f	233	if (edid) {
a12d6a07 PJ	234	drm_mode_connector_update_edid_property(connector, edid);
a12d6a07 PJ	235	ret = drm_add_edid_modes(connector, edid);
6a227d5f AC	236	kfree(edid);
	237	}
	238	return ret;
	239	}
	240
	241	static int cdv_hdmi_mode_valid(struct drm_connector *connector,
	242	struct drm_display_mode *mode)
	243	{
	244
	245	if (mode->clock > 165000)
	246	return MODE_CLOCK_HIGH;
	247	if (mode->clock < 20000)
	248	return MODE_CLOCK_HIGH;
	249
	250	/* just in case */
	251	if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
	252	return MODE_NO_DBLESCAN;
	253
	254	/* just in case */
	255	if (mode->flags & DRM_MODE_FLAG_INTERLACE)
	256	return MODE_NO_INTERLACE;
	257
	258	/*
	259	* FIXME: for now we limit the size to 1680x1050 on CDV, otherwise it
	260	* will go beyond the stolen memory size allocated to the framebuffer
	261	*/
	262	if (mode->hdisplay > 1680)
	263	return MODE_PANEL;
	264	if (mode->vdisplay > 1050)
	265	return MODE_PANEL;
	266	return MODE_OK;
	267	}
	268
	269	static void cdv_hdmi_destroy(struct drm_connector *connector)
	270	{
a12d6a07 PJ	271	struct psb_intel_encoder *psb_intel_encoder =
a12d6a07 PJ	272	psb_intel_attached_encoder(connector);
6a227d5f	273
a12d6a07 PJ	274	if (psb_intel_encoder->i2c_bus)
a12d6a07 PJ	275	psb_intel_i2c_destroy(psb_intel_encoder->i2c_bus);
6a227d5f AC	276	drm_sysfs_connector_remove(connector);
	277	drm_connector_cleanup(connector);
	278	kfree(connector);
	279	}
	280
	281	static const struct drm_encoder_helper_funcs cdv_hdmi_helper_funcs = {
	282	.dpms = cdv_hdmi_dpms,
	283	.mode_fixup = cdv_hdmi_mode_fixup,
	284	.prepare = psb_intel_encoder_prepare,
	285	.mode_set = cdv_hdmi_mode_set,
	286	.commit = psb_intel_encoder_commit,
	287	};
	288
	289	static const struct drm_connector_helper_funcs
	290	cdv_hdmi_connector_helper_funcs = {
	291	.get_modes = cdv_hdmi_get_modes,
	292	.mode_valid = cdv_hdmi_mode_valid,
	293	.best_encoder = psb_intel_best_encoder,
	294	};
	295
	296	static const struct drm_connector_funcs cdv_hdmi_connector_funcs = {
	297	.dpms = drm_helper_connector_dpms,
	298	.save = cdv_hdmi_save,
	299	.restore = cdv_hdmi_restore,
	300	.detect = cdv_hdmi_detect,
	301	.fill_modes = drm_helper_probe_single_connector_modes,
	302	.set_property = cdv_hdmi_set_property,
	303	.destroy = cdv_hdmi_destroy,
	304	};
	305
	306	void cdv_hdmi_init(struct drm_device *dev,
	307	struct psb_intel_mode_device *mode_dev, int reg)
	308	{
a12d6a07 PJ	309	struct psb_intel_encoder *psb_intel_encoder;
a12d6a07 PJ	310	struct psb_intel_connector *psb_intel_connector;
6a227d5f AC	311	struct drm_connector *connector;
	312	struct drm_encoder *encoder;
	313	struct mid_intel_hdmi_priv *hdmi_priv;
	314	int ddc_bus;
	315
a12d6a07 PJ	316	psb_intel_encoder = kzalloc(sizeof(struct psb_intel_encoder),
	317	GFP_KERNEL);
	318
	319	if (!psb_intel_encoder)
6a227d5f AC	320	return;
6a227d5f AC	321
a12d6a07 PJ	322	psb_intel_connector = kzalloc(sizeof(struct psb_intel_connector),
	323	GFP_KERNEL);
	324
	325	if (!psb_intel_connector)
	326	goto err_connector;
	327
	328	hdmi_priv = kzalloc(sizeof(struct mid_intel_hdmi_priv), GFP_KERNEL);
	329
	330	if (!hdmi_priv)
	331	goto err_priv;
	332
	333	connector = &psb_intel_connector->base;
	334	encoder = &psb_intel_encoder->base;
	335	drm_connector_init(dev, connector,
6a227d5f AC	336	&cdv_hdmi_connector_funcs,
	337	DRM_MODE_CONNECTOR_DVID);
	338
a12d6a07	339	drm_encoder_init(dev, encoder, &psb_intel_lvds_enc_funcs,
6a227d5f AC	340	DRM_MODE_ENCODER_TMDS);
6a227d5f AC	341
a12d6a07 PJ	342	psb_intel_connector_attach_encoder(psb_intel_connector,
	343	psb_intel_encoder);
	344	psb_intel_encoder->type = INTEL_OUTPUT_HDMI;
6a227d5f AC	345	hdmi_priv->hdmi_reg = reg;
6a227d5f AC	346	hdmi_priv->has_hdmi_sink = false;
a12d6a07	347	psb_intel_encoder->dev_priv = hdmi_priv;
6a227d5f AC	348
	349	drm_encoder_helper_add(encoder, &cdv_hdmi_helper_funcs);
	350	drm_connector_helper_add(connector,
	351	&cdv_hdmi_connector_helper_funcs);
	352	connector->display_info.subpixel_order = SubPixelHorizontalRGB;
	353	connector->interlace_allowed = false;
	354	connector->doublescan_allowed = false;
	355
	356	drm_connector_attach_property(connector,
a12d6a07 PJ	357	dev->mode_config.scaling_mode_property,
a12d6a07 PJ	358	DRM_MODE_SCALE_FULLSCREEN);
6a227d5f AC	359
	360	switch (reg) {
	361	case SDVOB:
	362	ddc_bus = GPIOE;
	363	break;
	364	case SDVOC:
	365	ddc_bus = GPIOD;
	366	break;
	367	default:
	368	DRM_ERROR("unknown reg 0x%x for HDMI\n", reg);
	369	goto failed_ddc;
	370	break;
	371	}
	372
a12d6a07	373	psb_intel_encoder->i2c_bus = psb_intel_i2c_create(dev,
6a227d5f AC	374	ddc_bus, (reg == SDVOB) ? "HDMIB" : "HDMIC");
6a227d5f AC	375
a12d6a07	376	if (!psb_intel_encoder->i2c_bus) {
6a227d5f AC	377	dev_err(dev->dev, "No ddc adapter available!\n");
	378	goto failed_ddc;
	379	}
a12d6a07 PJ	380
	381	hdmi_priv->hdmi_i2c_adapter =
	382	&(psb_intel_encoder->i2c_bus->adapter);
6a227d5f AC	383	hdmi_priv->dev = dev;
	384	drm_sysfs_connector_add(connector);
	385	return;
	386
	387	failed_ddc:
a12d6a07 PJ	388	drm_encoder_cleanup(encoder);
	389	drm_connector_cleanup(connector);
	390	err_priv:
	391	kfree(psb_intel_connector);
	392	err_connector:
	393	kfree(psb_intel_encoder);
6a227d5f	394	}