[net-next-2.6.git] / drivers / gpu / drm / i915 / intel_dvo.c

/*
 * Copyright 2006 Dave Airlie <airlied@linux.ie>
 * Copyright © 2006-2007 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>
 */
#include <linux/i2c.h>
#include "drmP.h"
#include "drm.h"
#include "drm_crtc.h"
#include "intel_drv.h"
#include "i915_drm.h"
#include "i915_drv.h"
#include "dvo.h"

#define SIL164_ADDR	0x38
#define CH7xxx_ADDR	0x76
#define TFP410_ADDR	0x38

static struct intel_dvo_device intel_dvo_devices[] = {
	{
		.type = INTEL_DVO_CHIP_TMDS,
		.name = "sil164",
		.dvo_reg = DVOC,
		.slave_addr = SIL164_ADDR,
		.dev_ops = &sil164_ops,
	},
	{
		.type = INTEL_DVO_CHIP_TMDS,
		.name = "ch7xxx",
		.dvo_reg = DVOC,
		.slave_addr = CH7xxx_ADDR,
		.dev_ops = &ch7xxx_ops,
	},
	{
		.type = INTEL_DVO_CHIP_LVDS,
		.name = "ivch",
		.dvo_reg = DVOA,
		.slave_addr = 0x02, /* Might also be 0x44, 0x84, 0xc4 */
		.dev_ops = &ivch_ops,
	},
	{
		.type = INTEL_DVO_CHIP_TMDS,
		.name = "tfp410",
		.dvo_reg = DVOC,
		.slave_addr = TFP410_ADDR,
		.dev_ops = &tfp410_ops,
	},
	{
		.type = INTEL_DVO_CHIP_LVDS,
		.name = "ch7017",
		.dvo_reg = DVOC,
		.slave_addr = 0x75,
		.gpio = GPIOE,
		.dev_ops = &ch7017_ops,
	}
};

static void intel_dvo_dpms(struct drm_encoder *encoder, int mode)
{
	struct drm_i915_private *dev_priv = encoder->dev->dev_private;
	struct intel_encoder *intel_encoder = enc_to_intel_encoder(encoder);
	struct intel_dvo_device *dvo = intel_encoder->dev_priv;
	u32 dvo_reg = dvo->dvo_reg;
	u32 temp = I915_READ(dvo_reg);

	if (mode == DRM_MODE_DPMS_ON) {
		I915_WRITE(dvo_reg, temp | DVO_ENABLE);
		I915_READ(dvo_reg);
		dvo->dev_ops->dpms(dvo, mode);
	} else {
		dvo->dev_ops->dpms(dvo, mode);
		I915_WRITE(dvo_reg, temp & ~DVO_ENABLE);
		I915_READ(dvo_reg);
	}
}

static void intel_dvo_save(struct drm_connector *connector)
{
	struct drm_i915_private *dev_priv = connector->dev->dev_private;
	struct intel_encoder *intel_encoder = to_intel_encoder(connector);
	struct intel_dvo_device *dvo = intel_encoder->dev_priv;

	/* Each output should probably just save the registers it touches,
	 * but for now, use more overkill.
	 */
	dev_priv->saveDVOA = I915_READ(DVOA);
	dev_priv->saveDVOB = I915_READ(DVOB);
	dev_priv->saveDVOC = I915_READ(DVOC);

	dvo->dev_ops->save(dvo);
}

static void intel_dvo_restore(struct drm_connector *connector)
{
	struct drm_i915_private *dev_priv = connector->dev->dev_private;
	struct intel_encoder *intel_encoder = to_intel_encoder(connector);
	struct intel_dvo_device *dvo = intel_encoder->dev_priv;

	dvo->dev_ops->restore(dvo);

	I915_WRITE(DVOA, dev_priv->saveDVOA);
	I915_WRITE(DVOB, dev_priv->saveDVOB);
	I915_WRITE(DVOC, dev_priv->saveDVOC);
}

static int intel_dvo_mode_valid(struct drm_connector *connector,
				struct drm_display_mode *mode)
{
	struct intel_encoder *intel_encoder = to_intel_encoder(connector);
	struct intel_dvo_device *dvo = intel_encoder->dev_priv;

	if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
		return MODE_NO_DBLESCAN;

	/* XXX: Validate clock range */

	if (dvo->panel_fixed_mode) {
		if (mode->hdisplay > dvo->panel_fixed_mode->hdisplay)
			return MODE_PANEL;
		if (mode->vdisplay > dvo->panel_fixed_mode->vdisplay)
			return MODE_PANEL;
	}

	return dvo->dev_ops->mode_valid(dvo, mode);
}

static bool intel_dvo_mode_fixup(struct drm_encoder *encoder,
				 struct drm_display_mode *mode,
				 struct drm_display_mode *adjusted_mode)
{
	struct intel_encoder *intel_encoder = enc_to_intel_encoder(encoder);
	struct intel_dvo_device *dvo = intel_encoder->dev_priv;

	/* If we have timings from the BIOS for the panel, put them in
	 * to the adjusted mode.  The CRTC will be set up for this mode,
	 * with the panel scaling set up to source from the H/VDisplay
	 * of the original mode.
	 */
	if (dvo->panel_fixed_mode != NULL) {
#define C(x) adjusted_mode->x = dvo->panel_fixed_mode->x
		C(hdisplay);
		C(hsync_start);
		C(hsync_end);
		C(htotal);
		C(vdisplay);
		C(vsync_start);
		C(vsync_end);
		C(vtotal);
		C(clock);
		drm_mode_set_crtcinfo(adjusted_mode, CRTC_INTERLACE_HALVE_V);
#undef C
	}

	if (dvo->dev_ops->mode_fixup)
		return dvo->dev_ops->mode_fixup(dvo, mode, adjusted_mode);

	return true;
}

static void intel_dvo_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_encoder *intel_encoder = enc_to_intel_encoder(encoder);
	struct intel_dvo_device *dvo = intel_encoder->dev_priv;
	int pipe = intel_crtc->pipe;
	u32 dvo_val;
	u32 dvo_reg = dvo->dvo_reg, dvo_srcdim_reg;
	int dpll_reg = (pipe == 0) ? DPLL_A : DPLL_B;

	switch (dvo_reg) {
	case DVOA:
	default:
		dvo_srcdim_reg = DVOA_SRCDIM;
		break;
	case DVOB:
		dvo_srcdim_reg = DVOB_SRCDIM;
		break;
	case DVOC:
		dvo_srcdim_reg = DVOC_SRCDIM;
		break;
	}

	dvo->dev_ops->mode_set(dvo, mode, adjusted_mode);

	/* Save the data order, since I don't know what it should be set to. */
	dvo_val = I915_READ(dvo_reg) &
		  (DVO_PRESERVE_MASK | DVO_DATA_ORDER_GBRG);
	dvo_val |= DVO_DATA_ORDER_FP | DVO_BORDER_ENABLE |
		   DVO_BLANK_ACTIVE_HIGH;

	if (pipe == 1)
		dvo_val |= DVO_PIPE_B_SELECT;
	dvo_val |= DVO_PIPE_STALL;
	if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC)
		dvo_val |= DVO_HSYNC_ACTIVE_HIGH;
	if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC)
		dvo_val |= DVO_VSYNC_ACTIVE_HIGH;

	I915_WRITE(dpll_reg, I915_READ(dpll_reg) | DPLL_DVO_HIGH_SPEED);

	/*I915_WRITE(DVOB_SRCDIM,
	  (adjusted_mode->hdisplay << DVO_SRCDIM_HORIZONTAL_SHIFT) |
	  (adjusted_mode->VDisplay << DVO_SRCDIM_VERTICAL_SHIFT));*/
	I915_WRITE(dvo_srcdim_reg,
		   (adjusted_mode->hdisplay << DVO_SRCDIM_HORIZONTAL_SHIFT) |
		   (adjusted_mode->vdisplay << DVO_SRCDIM_VERTICAL_SHIFT));
	/*I915_WRITE(DVOB, dvo_val);*/
	I915_WRITE(dvo_reg, dvo_val);
}

/**
 * Detect the output connection on our DVO device.
 *
 * Unimplemented.
 */
static enum drm_connector_status intel_dvo_detect(struct drm_connector *connector)
{
	struct intel_encoder *intel_encoder = to_intel_encoder(connector);
	struct intel_dvo_device *dvo = intel_encoder->dev_priv;

	return dvo->dev_ops->detect(dvo);
}

static int intel_dvo_get_modes(struct drm_connector *connector)
{
	struct intel_encoder *intel_encoder = to_intel_encoder(connector);
	struct intel_dvo_device *dvo = intel_encoder->dev_priv;

	/* We should probably have an i2c driver get_modes function for those
	 * devices which will have a fixed set of modes determined by the chip
	 * (TV-out, for example), but for now with just TMDS and LVDS,
	 * that's not the case.
	 */
	intel_ddc_get_modes(connector, intel_encoder->ddc_bus);
	if (!list_empty(&connector->probed_modes))
		return 1;


	if (dvo->panel_fixed_mode != NULL) {
		struct drm_display_mode *mode;
		mode = drm_mode_duplicate(connector->dev, dvo->panel_fixed_mode);
		if (mode) {
			drm_mode_probed_add(connector, mode);
			return 1;
		}
	}
	return 0;
}

static void intel_dvo_destroy (struct drm_connector *connector)
{
	struct intel_encoder *intel_encoder = to_intel_encoder(connector);
	struct intel_dvo_device *dvo = intel_encoder->dev_priv;

	if (dvo) {
		if (dvo->dev_ops->destroy)
			dvo->dev_ops->destroy(dvo);
		if (dvo->panel_fixed_mode)
			kfree(dvo->panel_fixed_mode);
		/* no need, in i830_dvoices[] now */
		//kfree(dvo);
	}
	if (intel_encoder->i2c_bus)
		intel_i2c_destroy(intel_encoder->i2c_bus);
	if (intel_encoder->ddc_bus)
		intel_i2c_destroy(intel_encoder->ddc_bus);
	drm_sysfs_connector_remove(connector);
	drm_connector_cleanup(connector);
	kfree(intel_encoder);
}

#ifdef RANDR_GET_CRTC_INTERFACE
static struct drm_crtc *intel_dvo_get_crtc(struct drm_connector *connector)
{
	struct drm_device *dev = connector->dev;
	struct drm_i915_private *dev_priv = dev->dev_private;
	struct intel_encoder *intel_encoder = to_intel_encoder(connector);
	struct intel_dvo_device *dvo = intel_encoder->dev_priv;
	int pipe = !!(I915_READ(dvo->dvo_reg) & SDVO_PIPE_B_SELECT);

	return intel_pipe_to_crtc(pScrn, pipe);
}
#endif

static const struct drm_encoder_helper_funcs intel_dvo_helper_funcs = {
	.dpms = intel_dvo_dpms,
	.mode_fixup = intel_dvo_mode_fixup,
	.prepare = intel_encoder_prepare,
	.mode_set = intel_dvo_mode_set,
	.commit = intel_encoder_commit,
};

static const struct drm_connector_funcs intel_dvo_connector_funcs = {
	.dpms = drm_helper_connector_dpms,
	.save = intel_dvo_save,
	.restore = intel_dvo_restore,
	.detect = intel_dvo_detect,
	.destroy = intel_dvo_destroy,
	.fill_modes = drm_helper_probe_single_connector_modes,
};

static const struct drm_connector_helper_funcs intel_dvo_connector_helper_funcs = {
	.mode_valid = intel_dvo_mode_valid,
	.get_modes = intel_dvo_get_modes,
	.best_encoder = intel_best_encoder,
};

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

static const struct drm_encoder_funcs intel_dvo_enc_funcs = {
	.destroy = intel_dvo_enc_destroy,
};


/**
 * Attempts to get a fixed panel timing for LVDS (currently only the i830).
 *
 * Other chips with DVO LVDS will need to extend this to deal with the LVDS
 * chip being on DVOB/C and having multiple pipes.
 */
static struct drm_display_mode *
intel_dvo_get_current_mode (struct drm_connector *connector)
{
	struct drm_device *dev = connector->dev;
	struct drm_i915_private *dev_priv = dev->dev_private;
	struct intel_encoder *intel_encoder = to_intel_encoder(connector);
	struct intel_dvo_device *dvo = intel_encoder->dev_priv;
	uint32_t dvo_reg = dvo->dvo_reg;
	uint32_t dvo_val = I915_READ(dvo_reg);
	struct drm_display_mode *mode = NULL;

	/* If the DVO port is active, that'll be the LVDS, so we can pull out
	 * its timings to get how the BIOS set up the panel.
	 */
	if (dvo_val & DVO_ENABLE) {
		struct drm_crtc *crtc;
		int pipe = (dvo_val & DVO_PIPE_B_SELECT) ? 1 : 0;

		crtc = intel_get_crtc_from_pipe(dev, pipe);
		if (crtc) {
			mode = intel_crtc_mode_get(dev, crtc);

			if (mode) {
				mode->type |= DRM_MODE_TYPE_PREFERRED;
				if (dvo_val & DVO_HSYNC_ACTIVE_HIGH)
					mode->flags |= DRM_MODE_FLAG_PHSYNC;
				if (dvo_val & DVO_VSYNC_ACTIVE_HIGH)
					mode->flags |= DRM_MODE_FLAG_PVSYNC;
			}
		}
	}
	return mode;
}

void intel_dvo_init(struct drm_device *dev)
{
	struct intel_encoder *intel_encoder;
	struct intel_dvo_device *dvo;
	struct i2c_adapter *i2cbus = NULL;
	int ret = 0;
	int i;
	int encoder_type = DRM_MODE_ENCODER_NONE;
	intel_encoder = kzalloc (sizeof(struct intel_encoder), GFP_KERNEL);
	if (!intel_encoder)
		return;

	/* Set up the DDC bus */
	intel_encoder->ddc_bus = intel_i2c_create(dev, GPIOD, "DVODDC_D");
	if (!intel_encoder->ddc_bus)
		goto free_intel;

	/* Now, try to find a controller */
	for (i = 0; i < ARRAY_SIZE(intel_dvo_devices); i++) {
		struct drm_connector *connector = &intel_encoder->base;
		int gpio;

		dvo = &intel_dvo_devices[i];

		/* Allow the I2C driver info to specify the GPIO to be used in
		 * special cases, but otherwise default to what's defined
		 * in the spec.
		 */
		if (dvo->gpio != 0)
			gpio = dvo->gpio;
		else if (dvo->type == INTEL_DVO_CHIP_LVDS)
			gpio = GPIOB;
		else
			gpio = GPIOE;

		/* Set up the I2C bus necessary for the chip we're probing.
		 * It appears that everything is on GPIOE except for panels
		 * on i830 laptops, which are on GPIOB (DVOA).
		 */
		if (i2cbus != NULL)
			intel_i2c_destroy(i2cbus);
		if (!(i2cbus = intel_i2c_create(dev, gpio,
			gpio == GPIOB ? "DVOI2C_B" : "DVOI2C_E"))) {
			continue;
		}

		if (dvo->dev_ops!= NULL)
			ret = dvo->dev_ops->init(dvo, i2cbus);
		else
			ret = false;

		if (!ret)
			continue;

		intel_encoder->type = INTEL_OUTPUT_DVO;
		intel_encoder->crtc_mask = (1 << 0) | (1 << 1);
		switch (dvo->type) {
		case INTEL_DVO_CHIP_TMDS:
			intel_encoder->clone_mask =
				(1 << INTEL_DVO_TMDS_CLONE_BIT) |
				(1 << INTEL_ANALOG_CLONE_BIT);
			drm_connector_init(dev, connector,
					   &intel_dvo_connector_funcs,
					   DRM_MODE_CONNECTOR_DVII);
			encoder_type = DRM_MODE_ENCODER_TMDS;
			break;
		case INTEL_DVO_CHIP_LVDS:
			intel_encoder->clone_mask =
				(1 << INTEL_DVO_LVDS_CLONE_BIT);
			drm_connector_init(dev, connector,
					   &intel_dvo_connector_funcs,
					   DRM_MODE_CONNECTOR_LVDS);
			encoder_type = DRM_MODE_ENCODER_LVDS;
			break;
		}

		drm_connector_helper_add(connector,
					 &intel_dvo_connector_helper_funcs);
		connector->display_info.subpixel_order = SubPixelHorizontalRGB;
		connector->interlace_allowed = false;
		connector->doublescan_allowed = false;

		intel_encoder->dev_priv = dvo;
		intel_encoder->i2c_bus = i2cbus;

		drm_encoder_init(dev, &intel_encoder->enc,
				 &intel_dvo_enc_funcs, encoder_type);
		drm_encoder_helper_add(&intel_encoder->enc,
				       &intel_dvo_helper_funcs);

		drm_mode_connector_attach_encoder(&intel_encoder->base,
						  &intel_encoder->enc);
		if (dvo->type == INTEL_DVO_CHIP_LVDS) {
			/* For our LVDS chipsets, we should hopefully be able
			 * to dig the fixed panel mode out of the BIOS data.
			 * However, it's in a different format from the BIOS
			 * data on chipsets with integrated LVDS (stored in AIM
			 * headers, likely), so for now, just get the current
			 * mode being output through DVO.
			 */
			dvo->panel_fixed_mode =
				intel_dvo_get_current_mode(connector);
			dvo->panel_wants_dither = true;
		}

		drm_sysfs_connector_add(connector);
		return;
	}

	intel_i2c_destroy(intel_encoder->ddc_bus);
	/* Didn't find a chip, so tear down. */
	if (i2cbus != NULL)
		intel_i2c_destroy(i2cbus);
free_intel:
	kfree(intel_encoder);
}
Commit	Line	Data
79e53945 JB	1	/*
	2	* Copyright 2006 Dave Airlie <airlied@linux.ie>
	3	* Copyright © 2006-2007 Intel Corporation
	4	*
	5	* Permission is hereby granted, free of charge, to any person obtaining a
	6	* copy of this software and associated documentation files (the "Software"),
	7	* to deal in the Software without restriction, including without limitation
	8	* the rights to use, copy, modify, merge, publish, distribute, sublicense,
	9	* and/or sell copies of the Software, and to permit persons to whom the
	10	* Software is furnished to do so, subject to the following conditions:
	11	*
	12	* The above copyright notice and this permission notice (including the next
	13	* paragraph) shall be included in all copies or substantial portions of the
	14	* Software.
	15	*
	16	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	17	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	18	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	19	* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	20	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
	21	* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
	22	* DEALINGS IN THE SOFTWARE.
	23	*
	24	* Authors:
	25	* Eric Anholt <eric@anholt.net>
	26	*/
	27	#include <linux/i2c.h>
	28	#include "drmP.h"
	29	#include "drm.h"
	30	#include "drm_crtc.h"
	31	#include "intel_drv.h"
	32	#include "i915_drm.h"
	33	#include "i915_drv.h"
	34	#include "dvo.h"
	35
	36	#define SIL164_ADDR 0x38
	37	#define CH7xxx_ADDR 0x76
	38	#define TFP410_ADDR 0x38
	39
b358d0a6	40	static struct intel_dvo_device intel_dvo_devices[] = {
79e53945 JB	41	{
	42	.type = INTEL_DVO_CHIP_TMDS,
	43	.name = "sil164",
	44	.dvo_reg = DVOC,
	45	.slave_addr = SIL164_ADDR,
	46	.dev_ops = &sil164_ops,
	47	},
	48	{
	49	.type = INTEL_DVO_CHIP_TMDS,
	50	.name = "ch7xxx",
	51	.dvo_reg = DVOC,
	52	.slave_addr = CH7xxx_ADDR,
	53	.dev_ops = &ch7xxx_ops,
	54	},
	55	{
	56	.type = INTEL_DVO_CHIP_LVDS,
	57	.name = "ivch",
	58	.dvo_reg = DVOA,
	59	.slave_addr = 0x02, /* Might also be 0x44, 0x84, 0xc4 */
	60	.dev_ops = &ivch_ops,
	61	},
	62	{
	63	.type = INTEL_DVO_CHIP_TMDS,
	64	.name = "tfp410",
	65	.dvo_reg = DVOC,
	66	.slave_addr = TFP410_ADDR,
	67	.dev_ops = &tfp410_ops,
	68	},
	69	{
	70	.type = INTEL_DVO_CHIP_LVDS,
	71	.name = "ch7017",
	72	.dvo_reg = DVOC,
	73	.slave_addr = 0x75,
	74	.gpio = GPIOE,
	75	.dev_ops = &ch7017_ops,
	76	}
	77	};
	78
	79	static void intel_dvo_dpms(struct drm_encoder *encoder, int mode)
	80	{
	81	struct drm_i915_private *dev_priv = encoder->dev->dev_private;
21d40d37 EA	82	struct intel_encoder *intel_encoder = enc_to_intel_encoder(encoder);
21d40d37 EA	83	struct intel_dvo_device *dvo = intel_encoder->dev_priv;
79e53945 JB	84	u32 dvo_reg = dvo->dvo_reg;
	85	u32 temp = I915_READ(dvo_reg);
	86
	87	if (mode == DRM_MODE_DPMS_ON) {
	88	I915_WRITE(dvo_reg, temp \| DVO_ENABLE);
	89	I915_READ(dvo_reg);
	90	dvo->dev_ops->dpms(dvo, mode);
	91	} else {
	92	dvo->dev_ops->dpms(dvo, mode);
	93	I915_WRITE(dvo_reg, temp & ~DVO_ENABLE);
	94	I915_READ(dvo_reg);
	95	}
	96	}
	97
	98	static void intel_dvo_save(struct drm_connector *connector)
	99	{
	100	struct drm_i915_private *dev_priv = connector->dev->dev_private;
21d40d37 EA	101	struct intel_encoder *intel_encoder = to_intel_encoder(connector);
21d40d37 EA	102	struct intel_dvo_device *dvo = intel_encoder->dev_priv;
79e53945 JB	103
	104	/* Each output should probably just save the registers it touches,
	105	* but for now, use more overkill.
	106	*/
	107	dev_priv->saveDVOA = I915_READ(DVOA);
	108	dev_priv->saveDVOB = I915_READ(DVOB);
	109	dev_priv->saveDVOC = I915_READ(DVOC);
	110
	111	dvo->dev_ops->save(dvo);
	112	}
	113
	114	static void intel_dvo_restore(struct drm_connector *connector)
	115	{
	116	struct drm_i915_private *dev_priv = connector->dev->dev_private;
21d40d37 EA	117	struct intel_encoder *intel_encoder = to_intel_encoder(connector);
21d40d37 EA	118	struct intel_dvo_device *dvo = intel_encoder->dev_priv;
79e53945 JB	119
	120	dvo->dev_ops->restore(dvo);
	121
	122	I915_WRITE(DVOA, dev_priv->saveDVOA);
	123	I915_WRITE(DVOB, dev_priv->saveDVOB);
	124	I915_WRITE(DVOC, dev_priv->saveDVOC);
	125	}
	126
	127	static int intel_dvo_mode_valid(struct drm_connector *connector,
	128	struct drm_display_mode *mode)
	129	{
21d40d37 EA	130	struct intel_encoder *intel_encoder = to_intel_encoder(connector);
21d40d37 EA	131	struct intel_dvo_device *dvo = intel_encoder->dev_priv;
79e53945 JB	132
	133	if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
	134	return MODE_NO_DBLESCAN;
	135
	136	/* XXX: Validate clock range */
	137
	138	if (dvo->panel_fixed_mode) {
	139	if (mode->hdisplay > dvo->panel_fixed_mode->hdisplay)
	140	return MODE_PANEL;
	141	if (mode->vdisplay > dvo->panel_fixed_mode->vdisplay)
	142	return MODE_PANEL;
	143	}
	144
	145	return dvo->dev_ops->mode_valid(dvo, mode);
	146	}
	147
	148	static bool intel_dvo_mode_fixup(struct drm_encoder *encoder,
	149	struct drm_display_mode *mode,
	150	struct drm_display_mode *adjusted_mode)
	151	{
21d40d37 EA	152	struct intel_encoder *intel_encoder = enc_to_intel_encoder(encoder);
21d40d37 EA	153	struct intel_dvo_device *dvo = intel_encoder->dev_priv;
79e53945 JB	154
	155	/* If we have timings from the BIOS for the panel, put them in
	156	* to the adjusted mode. The CRTC will be set up for this mode,
	157	* with the panel scaling set up to source from the H/VDisplay
	158	* of the original mode.
	159	*/
	160	if (dvo->panel_fixed_mode != NULL) {
	161	#define C(x) adjusted_mode->x = dvo->panel_fixed_mode->x
	162	C(hdisplay);
	163	C(hsync_start);
	164	C(hsync_end);
	165	C(htotal);
	166	C(vdisplay);
	167	C(vsync_start);
	168	C(vsync_end);
	169	C(vtotal);
	170	C(clock);
	171	drm_mode_set_crtcinfo(adjusted_mode, CRTC_INTERLACE_HALVE_V);
	172	#undef C
	173	}
	174
	175	if (dvo->dev_ops->mode_fixup)
	176	return dvo->dev_ops->mode_fixup(dvo, mode, adjusted_mode);
	177
	178	return true;
	179	}
	180
	181	static void intel_dvo_mode_set(struct drm_encoder *encoder,
	182	struct drm_display_mode *mode,
	183	struct drm_display_mode *adjusted_mode)
	184	{
	185	struct drm_device *dev = encoder->dev;
	186	struct drm_i915_private *dev_priv = dev->dev_private;
	187	struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
21d40d37 EA	188	struct intel_encoder *intel_encoder = enc_to_intel_encoder(encoder);
21d40d37 EA	189	struct intel_dvo_device *dvo = intel_encoder->dev_priv;
79e53945 JB	190	int pipe = intel_crtc->pipe;
	191	u32 dvo_val;
	192	u32 dvo_reg = dvo->dvo_reg, dvo_srcdim_reg;
	193	int dpll_reg = (pipe == 0) ? DPLL_A : DPLL_B;
	194
	195	switch (dvo_reg) {
	196	case DVOA:
	197	default:
	198	dvo_srcdim_reg = DVOA_SRCDIM;
	199	break;
	200	case DVOB:
	201	dvo_srcdim_reg = DVOB_SRCDIM;
	202	break;
	203	case DVOC:
	204	dvo_srcdim_reg = DVOC_SRCDIM;
	205	break;
	206	}
	207
	208	dvo->dev_ops->mode_set(dvo, mode, adjusted_mode);
	209
	210	/* Save the data order, since I don't know what it should be set to. */
	211	dvo_val = I915_READ(dvo_reg) &
	212	(DVO_PRESERVE_MASK \| DVO_DATA_ORDER_GBRG);
	213	dvo_val \|= DVO_DATA_ORDER_FP \| DVO_BORDER_ENABLE \|
	214	DVO_BLANK_ACTIVE_HIGH;
	215
	216	if (pipe == 1)
	217	dvo_val \|= DVO_PIPE_B_SELECT;
	218	dvo_val \|= DVO_PIPE_STALL;
	219	if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC)
	220	dvo_val \|= DVO_HSYNC_ACTIVE_HIGH;
	221	if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC)
	222	dvo_val \|= DVO_VSYNC_ACTIVE_HIGH;
	223
	224	I915_WRITE(dpll_reg, I915_READ(dpll_reg) \| DPLL_DVO_HIGH_SPEED);
	225
	226	/*I915_WRITE(DVOB_SRCDIM,
	227	(adjusted_mode->hdisplay << DVO_SRCDIM_HORIZONTAL_SHIFT) \|
	228	(adjusted_mode->VDisplay << DVO_SRCDIM_VERTICAL_SHIFT));*/
	229	I915_WRITE(dvo_srcdim_reg,
	230	(adjusted_mode->hdisplay << DVO_SRCDIM_HORIZONTAL_SHIFT) \|
	231	(adjusted_mode->vdisplay << DVO_SRCDIM_VERTICAL_SHIFT));
	232	/I915_WRITE(DVOB, dvo_val);/
	233	I915_WRITE(dvo_reg, dvo_val);
	234	}
	235
	236	/**
	237	* Detect the output connection on our DVO device.
	238	*
	239	* Unimplemented.
	240	*/
	241	static enum drm_connector_status intel_dvo_detect(struct drm_connector *connector)
	242	{
21d40d37 EA	243	struct intel_encoder *intel_encoder = to_intel_encoder(connector);
21d40d37 EA	244	struct intel_dvo_device *dvo = intel_encoder->dev_priv;
79e53945 JB	245
	246	return dvo->dev_ops->detect(dvo);
	247	}
	248
	249	static int intel_dvo_get_modes(struct drm_connector *connector)
	250	{
21d40d37 EA	251	struct intel_encoder *intel_encoder = to_intel_encoder(connector);
21d40d37 EA	252	struct intel_dvo_device *dvo = intel_encoder->dev_priv;
79e53945 JB	253
	254	/* We should probably have an i2c driver get_modes function for those
	255	* devices which will have a fixed set of modes determined by the chip
	256	* (TV-out, for example), but for now with just TMDS and LVDS,
	257	* that's not the case.
	258	*/
335af9a2	259	intel_ddc_get_modes(connector, intel_encoder->ddc_bus);
79e53945 JB	260	if (!list_empty(&connector->probed_modes))
	261	return 1;
	262
	263
	264	if (dvo->panel_fixed_mode != NULL) {
	265	struct drm_display_mode *mode;
	266	mode = drm_mode_duplicate(connector->dev, dvo->panel_fixed_mode);
	267	if (mode) {
	268	drm_mode_probed_add(connector, mode);
	269	return 1;
	270	}
	271	}
	272	return 0;
	273	}
	274
	275	static void intel_dvo_destroy (struct drm_connector *connector)
	276	{
21d40d37 EA	277	struct intel_encoder *intel_encoder = to_intel_encoder(connector);
21d40d37 EA	278	struct intel_dvo_device *dvo = intel_encoder->dev_priv;
79e53945 JB	279
	280	if (dvo) {
	281	if (dvo->dev_ops->destroy)
	282	dvo->dev_ops->destroy(dvo);
	283	if (dvo->panel_fixed_mode)
	284	kfree(dvo->panel_fixed_mode);
	285	/* no need, in i830_dvoices[] now */
	286	//kfree(dvo);
	287	}
21d40d37 EA	288	if (intel_encoder->i2c_bus)
	289	intel_i2c_destroy(intel_encoder->i2c_bus);
	290	if (intel_encoder->ddc_bus)
	291	intel_i2c_destroy(intel_encoder->ddc_bus);
79e53945 JB	292	drm_sysfs_connector_remove(connector);
79e53945 JB	293	drm_connector_cleanup(connector);
21d40d37	294	kfree(intel_encoder);
79e53945 JB	295	}
	296
	297	#ifdef RANDR_GET_CRTC_INTERFACE
	298	static struct drm_crtc intel_dvo_get_crtc(struct drm_connector connector)
	299	{
	300	struct drm_device *dev = connector->dev;
	301	struct drm_i915_private *dev_priv = dev->dev_private;
21d40d37 EA	302	struct intel_encoder *intel_encoder = to_intel_encoder(connector);
21d40d37 EA	303	struct intel_dvo_device *dvo = intel_encoder->dev_priv;
79e53945 JB	304	int pipe = !!(I915_READ(dvo->dvo_reg) & SDVO_PIPE_B_SELECT);
	305
	306	return intel_pipe_to_crtc(pScrn, pipe);
	307	}
	308	#endif
	309
	310	static const struct drm_encoder_helper_funcs intel_dvo_helper_funcs = {
	311	.dpms = intel_dvo_dpms,
	312	.mode_fixup = intel_dvo_mode_fixup,
	313	.prepare = intel_encoder_prepare,
	314	.mode_set = intel_dvo_mode_set,
	315	.commit = intel_encoder_commit,
	316	};
	317
	318	static const struct drm_connector_funcs intel_dvo_connector_funcs = {
c9fb15f6	319	.dpms = drm_helper_connector_dpms,
79e53945 JB	320	.save = intel_dvo_save,
	321	.restore = intel_dvo_restore,
	322	.detect = intel_dvo_detect,
	323	.destroy = intel_dvo_destroy,
	324	.fill_modes = drm_helper_probe_single_connector_modes,
	325	};
	326
	327	static const struct drm_connector_helper_funcs intel_dvo_connector_helper_funcs = {
	328	.mode_valid = intel_dvo_mode_valid,
	329	.get_modes = intel_dvo_get_modes,
	330	.best_encoder = intel_best_encoder,
	331	};
	332
b358d0a6	333	static void intel_dvo_enc_destroy(struct drm_encoder *encoder)
79e53945 JB	334	{
	335	drm_encoder_cleanup(encoder);
	336	}
	337
	338	static const struct drm_encoder_funcs intel_dvo_enc_funcs = {
	339	.destroy = intel_dvo_enc_destroy,
	340	};
	341
	342
	343	/**
	344	* Attempts to get a fixed panel timing for LVDS (currently only the i830).
	345	*
	346	* Other chips with DVO LVDS will need to extend this to deal with the LVDS
	347	* chip being on DVOB/C and having multiple pipes.
	348	*/
	349	static struct drm_display_mode *
	350	intel_dvo_get_current_mode (struct drm_connector *connector)
	351	{
	352	struct drm_device *dev = connector->dev;
	353	struct drm_i915_private *dev_priv = dev->dev_private;
21d40d37 EA	354	struct intel_encoder *intel_encoder = to_intel_encoder(connector);
21d40d37 EA	355	struct intel_dvo_device *dvo = intel_encoder->dev_priv;
79e53945 JB	356	uint32_t dvo_reg = dvo->dvo_reg;
	357	uint32_t dvo_val = I915_READ(dvo_reg);
	358	struct drm_display_mode *mode = NULL;
	359
	360	/* If the DVO port is active, that'll be the LVDS, so we can pull out
	361	* its timings to get how the BIOS set up the panel.
	362	*/
	363	if (dvo_val & DVO_ENABLE) {
	364	struct drm_crtc *crtc;
	365	int pipe = (dvo_val & DVO_PIPE_B_SELECT) ? 1 : 0;
	366
	367	crtc = intel_get_crtc_from_pipe(dev, pipe);
	368	if (crtc) {
	369	mode = intel_crtc_mode_get(dev, crtc);
	370
	371	if (mode) {
	372	mode->type \|= DRM_MODE_TYPE_PREFERRED;
	373	if (dvo_val & DVO_HSYNC_ACTIVE_HIGH)
	374	mode->flags \|= DRM_MODE_FLAG_PHSYNC;
	375	if (dvo_val & DVO_VSYNC_ACTIVE_HIGH)
	376	mode->flags \|= DRM_MODE_FLAG_PVSYNC;
	377	}
	378	}
	379	}
	380	return mode;
	381	}
	382
	383	void intel_dvo_init(struct drm_device *dev)
	384	{
21d40d37	385	struct intel_encoder *intel_encoder;
79e53945	386	struct intel_dvo_device *dvo;
f9c10a9b	387	struct i2c_adapter *i2cbus = NULL;
79e53945 JB	388	int ret = 0;
79e53945 JB	389	int i;
79e53945	390	int encoder_type = DRM_MODE_ENCODER_NONE;
21d40d37 EA	391	intel_encoder = kzalloc (sizeof(struct intel_encoder), GFP_KERNEL);
21d40d37 EA	392	if (!intel_encoder)
79e53945 JB	393	return;
	394
	395	/* Set up the DDC bus */
21d40d37 EA	396	intel_encoder->ddc_bus = intel_i2c_create(dev, GPIOD, "DVODDC_D");
21d40d37 EA	397	if (!intel_encoder->ddc_bus)
79e53945 JB	398	goto free_intel;
	399
	400	/* Now, try to find a controller */
	401	for (i = 0; i < ARRAY_SIZE(intel_dvo_devices); i++) {
21d40d37	402	struct drm_connector *connector = &intel_encoder->base;
79e53945 JB	403	int gpio;
	404
	405	dvo = &intel_dvo_devices[i];
	406
	407	/* Allow the I2C driver info to specify the GPIO to be used in
	408	* special cases, but otherwise default to what's defined
	409	* in the spec.
	410	*/
	411	if (dvo->gpio != 0)
	412	gpio = dvo->gpio;
	413	else if (dvo->type == INTEL_DVO_CHIP_LVDS)
	414	gpio = GPIOB;
	415	else
	416	gpio = GPIOE;
	417
	418	/* Set up the I2C bus necessary for the chip we're probing.
	419	* It appears that everything is on GPIOE except for panels
	420	* on i830 laptops, which are on GPIOB (DVOA).
	421	*/
f9c10a9b KP	422	if (i2cbus != NULL)
	423	intel_i2c_destroy(i2cbus);
	424	if (!(i2cbus = intel_i2c_create(dev, gpio,
	425	gpio == GPIOB ? "DVOI2C_B" : "DVOI2C_E"))) {
	426	continue;
79e53945 JB	427	}
	428
	429	if (dvo->dev_ops!= NULL)
	430	ret = dvo->dev_ops->init(dvo, i2cbus);
	431	else
	432	ret = false;
	433
	434	if (!ret)
	435	continue;
	436
21d40d37 EA	437	intel_encoder->type = INTEL_OUTPUT_DVO;
21d40d37 EA	438	intel_encoder->crtc_mask = (1 << 0) \| (1 << 1);
79e53945 JB	439	switch (dvo->type) {
79e53945 JB	440	case INTEL_DVO_CHIP_TMDS:
21d40d37	441	intel_encoder->clone_mask =
f8aed700 ML	442	(1 << INTEL_DVO_TMDS_CLONE_BIT) \|
f8aed700 ML	443	(1 << INTEL_ANALOG_CLONE_BIT);
79e53945 JB	444	drm_connector_init(dev, connector,
	445	&intel_dvo_connector_funcs,
	446	DRM_MODE_CONNECTOR_DVII);
	447	encoder_type = DRM_MODE_ENCODER_TMDS;
	448	break;
	449	case INTEL_DVO_CHIP_LVDS:
21d40d37	450	intel_encoder->clone_mask =
f8aed700	451	(1 << INTEL_DVO_LVDS_CLONE_BIT);
79e53945 JB	452	drm_connector_init(dev, connector,
	453	&intel_dvo_connector_funcs,
	454	DRM_MODE_CONNECTOR_LVDS);
	455	encoder_type = DRM_MODE_ENCODER_LVDS;
	456	break;
	457	}
	458
	459	drm_connector_helper_add(connector,
	460	&intel_dvo_connector_helper_funcs);
	461	connector->display_info.subpixel_order = SubPixelHorizontalRGB;
	462	connector->interlace_allowed = false;
	463	connector->doublescan_allowed = false;
	464
21d40d37 EA	465	intel_encoder->dev_priv = dvo;
21d40d37 EA	466	intel_encoder->i2c_bus = i2cbus;
79e53945	467
21d40d37	468	drm_encoder_init(dev, &intel_encoder->enc,
79e53945	469	&intel_dvo_enc_funcs, encoder_type);
21d40d37	470	drm_encoder_helper_add(&intel_encoder->enc,
79e53945 JB	471	&intel_dvo_helper_funcs);
79e53945 JB	472
21d40d37 EA	473	drm_mode_connector_attach_encoder(&intel_encoder->base,
21d40d37 EA	474	&intel_encoder->enc);
79e53945 JB	475	if (dvo->type == INTEL_DVO_CHIP_LVDS) {
	476	/* For our LVDS chipsets, we should hopefully be able
	477	* to dig the fixed panel mode out of the BIOS data.
	478	* However, it's in a different format from the BIOS
	479	* data on chipsets with integrated LVDS (stored in AIM
	480	* headers, likely), so for now, just get the current
	481	* mode being output through DVO.
	482	*/
	483	dvo->panel_fixed_mode =
	484	intel_dvo_get_current_mode(connector);
	485	dvo->panel_wants_dither = true;
	486	}
	487
	488	drm_sysfs_connector_add(connector);
	489	return;
	490	}
	491
21d40d37	492	intel_i2c_destroy(intel_encoder->ddc_bus);
79e53945 JB	493	/* Didn't find a chip, so tear down. */
	494	if (i2cbus != NULL)
	495	intel_i2c_destroy(i2cbus);
	496	free_intel:
21d40d37	497	kfree(intel_encoder);
79e53945	498	}