[deliverable/linux.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 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,
	.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
79e53945 JB	98	static int intel_dvo_mode_valid(struct drm_connector *connector,
	99	struct drm_display_mode *mode)
	100	{
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	if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
	105	return MODE_NO_DBLESCAN;
	106
	107	/* XXX: Validate clock range */
	108
	109	if (dvo->panel_fixed_mode) {
	110	if (mode->hdisplay > dvo->panel_fixed_mode->hdisplay)
	111	return MODE_PANEL;
	112	if (mode->vdisplay > dvo->panel_fixed_mode->vdisplay)
	113	return MODE_PANEL;
	114	}
	115
	116	return dvo->dev_ops->mode_valid(dvo, mode);
	117	}
	118
	119	static bool intel_dvo_mode_fixup(struct drm_encoder *encoder,
	120	struct drm_display_mode *mode,
	121	struct drm_display_mode *adjusted_mode)
	122	{
21d40d37 EA	123	struct intel_encoder *intel_encoder = enc_to_intel_encoder(encoder);
21d40d37 EA	124	struct intel_dvo_device *dvo = intel_encoder->dev_priv;
79e53945 JB	125
	126	/* If we have timings from the BIOS for the panel, put them in
	127	* to the adjusted mode. The CRTC will be set up for this mode,
	128	* with the panel scaling set up to source from the H/VDisplay
	129	* of the original mode.
	130	*/
	131	if (dvo->panel_fixed_mode != NULL) {
	132	#define C(x) adjusted_mode->x = dvo->panel_fixed_mode->x
	133	C(hdisplay);
	134	C(hsync_start);
	135	C(hsync_end);
	136	C(htotal);
	137	C(vdisplay);
	138	C(vsync_start);
	139	C(vsync_end);
	140	C(vtotal);
	141	C(clock);
	142	drm_mode_set_crtcinfo(adjusted_mode, CRTC_INTERLACE_HALVE_V);
	143	#undef C
	144	}
	145
	146	if (dvo->dev_ops->mode_fixup)
	147	return dvo->dev_ops->mode_fixup(dvo, mode, adjusted_mode);
	148
	149	return true;
	150	}
	151
	152	static void intel_dvo_mode_set(struct drm_encoder *encoder,
	153	struct drm_display_mode *mode,
	154	struct drm_display_mode *adjusted_mode)
	155	{
	156	struct drm_device *dev = encoder->dev;
	157	struct drm_i915_private *dev_priv = dev->dev_private;
	158	struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
21d40d37 EA	159	struct intel_encoder *intel_encoder = enc_to_intel_encoder(encoder);
21d40d37 EA	160	struct intel_dvo_device *dvo = intel_encoder->dev_priv;
79e53945 JB	161	int pipe = intel_crtc->pipe;
	162	u32 dvo_val;
	163	u32 dvo_reg = dvo->dvo_reg, dvo_srcdim_reg;
	164	int dpll_reg = (pipe == 0) ? DPLL_A : DPLL_B;
	165
	166	switch (dvo_reg) {
	167	case DVOA:
	168	default:
	169	dvo_srcdim_reg = DVOA_SRCDIM;
	170	break;
	171	case DVOB:
	172	dvo_srcdim_reg = DVOB_SRCDIM;
	173	break;
	174	case DVOC:
	175	dvo_srcdim_reg = DVOC_SRCDIM;
	176	break;
	177	}
	178
	179	dvo->dev_ops->mode_set(dvo, mode, adjusted_mode);
	180
	181	/* Save the data order, since I don't know what it should be set to. */
	182	dvo_val = I915_READ(dvo_reg) &
	183	(DVO_PRESERVE_MASK \| DVO_DATA_ORDER_GBRG);
	184	dvo_val \|= DVO_DATA_ORDER_FP \| DVO_BORDER_ENABLE \|
	185	DVO_BLANK_ACTIVE_HIGH;
	186
	187	if (pipe == 1)
	188	dvo_val \|= DVO_PIPE_B_SELECT;
	189	dvo_val \|= DVO_PIPE_STALL;
	190	if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC)
	191	dvo_val \|= DVO_HSYNC_ACTIVE_HIGH;
	192	if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC)
	193	dvo_val \|= DVO_VSYNC_ACTIVE_HIGH;
	194
	195	I915_WRITE(dpll_reg, I915_READ(dpll_reg) \| DPLL_DVO_HIGH_SPEED);
	196
	197	/*I915_WRITE(DVOB_SRCDIM,
	198	(adjusted_mode->hdisplay << DVO_SRCDIM_HORIZONTAL_SHIFT) \|
	199	(adjusted_mode->VDisplay << DVO_SRCDIM_VERTICAL_SHIFT));*/
	200	I915_WRITE(dvo_srcdim_reg,
	201	(adjusted_mode->hdisplay << DVO_SRCDIM_HORIZONTAL_SHIFT) \|
	202	(adjusted_mode->vdisplay << DVO_SRCDIM_VERTICAL_SHIFT));
	203	/I915_WRITE(DVOB, dvo_val);/
	204	I915_WRITE(dvo_reg, dvo_val);
	205	}
	206
	207	/**
	208	* Detect the output connection on our DVO device.
	209	*
	210	* Unimplemented.
	211	*/
	212	static enum drm_connector_status intel_dvo_detect(struct drm_connector *connector)
	213	{
21d40d37 EA	214	struct intel_encoder *intel_encoder = to_intel_encoder(connector);
21d40d37 EA	215	struct intel_dvo_device *dvo = intel_encoder->dev_priv;
79e53945 JB	216
	217	return dvo->dev_ops->detect(dvo);
	218	}
	219
	220	static int intel_dvo_get_modes(struct drm_connector *connector)
	221	{
21d40d37 EA	222	struct intel_encoder *intel_encoder = to_intel_encoder(connector);
21d40d37 EA	223	struct intel_dvo_device *dvo = intel_encoder->dev_priv;
79e53945 JB	224
	225	/* We should probably have an i2c driver get_modes function for those
	226	* devices which will have a fixed set of modes determined by the chip
	227	* (TV-out, for example), but for now with just TMDS and LVDS,
	228	* that's not the case.
	229	*/
335af9a2	230	intel_ddc_get_modes(connector, intel_encoder->ddc_bus);
79e53945 JB	231	if (!list_empty(&connector->probed_modes))
	232	return 1;
	233
	234
	235	if (dvo->panel_fixed_mode != NULL) {
	236	struct drm_display_mode *mode;
	237	mode = drm_mode_duplicate(connector->dev, dvo->panel_fixed_mode);
	238	if (mode) {
	239	drm_mode_probed_add(connector, mode);
	240	return 1;
	241	}
	242	}
	243	return 0;
	244	}
	245
	246	static void intel_dvo_destroy (struct drm_connector *connector)
	247	{
21d40d37 EA	248	struct intel_encoder *intel_encoder = to_intel_encoder(connector);
21d40d37 EA	249	struct intel_dvo_device *dvo = intel_encoder->dev_priv;
79e53945 JB	250
	251	if (dvo) {
	252	if (dvo->dev_ops->destroy)
	253	dvo->dev_ops->destroy(dvo);
	254	if (dvo->panel_fixed_mode)
	255	kfree(dvo->panel_fixed_mode);
	256	/* no need, in i830_dvoices[] now */
	257	//kfree(dvo);
	258	}
21d40d37 EA	259	if (intel_encoder->i2c_bus)
	260	intel_i2c_destroy(intel_encoder->i2c_bus);
	261	if (intel_encoder->ddc_bus)
	262	intel_i2c_destroy(intel_encoder->ddc_bus);
79e53945 JB	263	drm_sysfs_connector_remove(connector);
79e53945 JB	264	drm_connector_cleanup(connector);
21d40d37	265	kfree(intel_encoder);
79e53945 JB	266	}
	267
	268	#ifdef RANDR_GET_CRTC_INTERFACE
	269	static struct drm_crtc intel_dvo_get_crtc(struct drm_connector connector)
	270	{
	271	struct drm_device *dev = connector->dev;
	272	struct drm_i915_private *dev_priv = dev->dev_private;
21d40d37 EA	273	struct intel_encoder *intel_encoder = to_intel_encoder(connector);
21d40d37 EA	274	struct intel_dvo_device *dvo = intel_encoder->dev_priv;
79e53945 JB	275	int pipe = !!(I915_READ(dvo->dvo_reg) & SDVO_PIPE_B_SELECT);
	276
	277	return intel_pipe_to_crtc(pScrn, pipe);
	278	}
	279	#endif
	280
	281	static const struct drm_encoder_helper_funcs intel_dvo_helper_funcs = {
	282	.dpms = intel_dvo_dpms,
	283	.mode_fixup = intel_dvo_mode_fixup,
	284	.prepare = intel_encoder_prepare,
	285	.mode_set = intel_dvo_mode_set,
	286	.commit = intel_encoder_commit,
	287	};
	288
	289	static const struct drm_connector_funcs intel_dvo_connector_funcs = {
c9fb15f6	290	.dpms = drm_helper_connector_dpms,
79e53945 JB	291	.detect = intel_dvo_detect,
	292	.destroy = intel_dvo_destroy,
	293	.fill_modes = drm_helper_probe_single_connector_modes,
	294	};
	295
	296	static const struct drm_connector_helper_funcs intel_dvo_connector_helper_funcs = {
	297	.mode_valid = intel_dvo_mode_valid,
	298	.get_modes = intel_dvo_get_modes,
	299	.best_encoder = intel_best_encoder,
	300	};
	301
b358d0a6	302	static void intel_dvo_enc_destroy(struct drm_encoder *encoder)
79e53945 JB	303	{
	304	drm_encoder_cleanup(encoder);
	305	}
	306
	307	static const struct drm_encoder_funcs intel_dvo_enc_funcs = {
	308	.destroy = intel_dvo_enc_destroy,
	309	};
	310
	311
	312	/**
	313	* Attempts to get a fixed panel timing for LVDS (currently only the i830).
	314	*
	315	* Other chips with DVO LVDS will need to extend this to deal with the LVDS
	316	* chip being on DVOB/C and having multiple pipes.
	317	*/
	318	static struct drm_display_mode *
	319	intel_dvo_get_current_mode (struct drm_connector *connector)
	320	{
	321	struct drm_device *dev = connector->dev;
	322	struct drm_i915_private *dev_priv = dev->dev_private;
21d40d37 EA	323	struct intel_encoder *intel_encoder = to_intel_encoder(connector);
21d40d37 EA	324	struct intel_dvo_device *dvo = intel_encoder->dev_priv;
79e53945 JB	325	uint32_t dvo_reg = dvo->dvo_reg;
	326	uint32_t dvo_val = I915_READ(dvo_reg);
	327	struct drm_display_mode *mode = NULL;
	328
	329	/* If the DVO port is active, that'll be the LVDS, so we can pull out
	330	* its timings to get how the BIOS set up the panel.
	331	*/
	332	if (dvo_val & DVO_ENABLE) {
	333	struct drm_crtc *crtc;
	334	int pipe = (dvo_val & DVO_PIPE_B_SELECT) ? 1 : 0;
	335
	336	crtc = intel_get_crtc_from_pipe(dev, pipe);
	337	if (crtc) {
	338	mode = intel_crtc_mode_get(dev, crtc);
	339
	340	if (mode) {
	341	mode->type \|= DRM_MODE_TYPE_PREFERRED;
	342	if (dvo_val & DVO_HSYNC_ACTIVE_HIGH)
	343	mode->flags \|= DRM_MODE_FLAG_PHSYNC;
	344	if (dvo_val & DVO_VSYNC_ACTIVE_HIGH)
	345	mode->flags \|= DRM_MODE_FLAG_PVSYNC;
	346	}
	347	}
	348	}
	349	return mode;
	350	}
	351
	352	void intel_dvo_init(struct drm_device *dev)
	353	{
21d40d37	354	struct intel_encoder *intel_encoder;
79e53945	355	struct intel_dvo_device *dvo;
f9c10a9b	356	struct i2c_adapter *i2cbus = NULL;
79e53945 JB	357	int ret = 0;
79e53945 JB	358	int i;
79e53945	359	int encoder_type = DRM_MODE_ENCODER_NONE;
21d40d37 EA	360	intel_encoder = kzalloc (sizeof(struct intel_encoder), GFP_KERNEL);
21d40d37 EA	361	if (!intel_encoder)
79e53945 JB	362	return;
	363
	364	/* Set up the DDC bus */
21d40d37 EA	365	intel_encoder->ddc_bus = intel_i2c_create(dev, GPIOD, "DVODDC_D");
21d40d37 EA	366	if (!intel_encoder->ddc_bus)
79e53945 JB	367	goto free_intel;
	368
	369	/* Now, try to find a controller */
	370	for (i = 0; i < ARRAY_SIZE(intel_dvo_devices); i++) {
21d40d37	371	struct drm_connector *connector = &intel_encoder->base;
79e53945 JB	372	int gpio;
	373
	374	dvo = &intel_dvo_devices[i];
	375
	376	/* Allow the I2C driver info to specify the GPIO to be used in
	377	* special cases, but otherwise default to what's defined
	378	* in the spec.
	379	*/
	380	if (dvo->gpio != 0)
	381	gpio = dvo->gpio;
	382	else if (dvo->type == INTEL_DVO_CHIP_LVDS)
	383	gpio = GPIOB;
	384	else
	385	gpio = GPIOE;
	386
	387	/* Set up the I2C bus necessary for the chip we're probing.
	388	* It appears that everything is on GPIOE except for panels
	389	* on i830 laptops, which are on GPIOB (DVOA).
	390	*/
f9c10a9b KP	391	if (i2cbus != NULL)
	392	intel_i2c_destroy(i2cbus);
	393	if (!(i2cbus = intel_i2c_create(dev, gpio,
	394	gpio == GPIOB ? "DVOI2C_B" : "DVOI2C_E"))) {
	395	continue;
79e53945 JB	396	}
	397
	398	if (dvo->dev_ops!= NULL)
	399	ret = dvo->dev_ops->init(dvo, i2cbus);
	400	else
	401	ret = false;
	402
	403	if (!ret)
	404	continue;
	405
21d40d37 EA	406	intel_encoder->type = INTEL_OUTPUT_DVO;
21d40d37 EA	407	intel_encoder->crtc_mask = (1 << 0) \| (1 << 1);
79e53945 JB	408	switch (dvo->type) {
79e53945 JB	409	case INTEL_DVO_CHIP_TMDS:
21d40d37	410	intel_encoder->clone_mask =
f8aed700 ML	411	(1 << INTEL_DVO_TMDS_CLONE_BIT) \|
f8aed700 ML	412	(1 << INTEL_ANALOG_CLONE_BIT);
79e53945 JB	413	drm_connector_init(dev, connector,
	414	&intel_dvo_connector_funcs,
	415	DRM_MODE_CONNECTOR_DVII);
	416	encoder_type = DRM_MODE_ENCODER_TMDS;
	417	break;
	418	case INTEL_DVO_CHIP_LVDS:
21d40d37	419	intel_encoder->clone_mask =
f8aed700	420	(1 << INTEL_DVO_LVDS_CLONE_BIT);
79e53945 JB	421	drm_connector_init(dev, connector,
	422	&intel_dvo_connector_funcs,
	423	DRM_MODE_CONNECTOR_LVDS);
	424	encoder_type = DRM_MODE_ENCODER_LVDS;
	425	break;
	426	}
	427
	428	drm_connector_helper_add(connector,
	429	&intel_dvo_connector_helper_funcs);
	430	connector->display_info.subpixel_order = SubPixelHorizontalRGB;
	431	connector->interlace_allowed = false;
	432	connector->doublescan_allowed = false;
	433
21d40d37 EA	434	intel_encoder->dev_priv = dvo;
21d40d37 EA	435	intel_encoder->i2c_bus = i2cbus;
79e53945	436
21d40d37	437	drm_encoder_init(dev, &intel_encoder->enc,
79e53945	438	&intel_dvo_enc_funcs, encoder_type);
21d40d37	439	drm_encoder_helper_add(&intel_encoder->enc,
79e53945 JB	440	&intel_dvo_helper_funcs);
79e53945 JB	441
21d40d37 EA	442	drm_mode_connector_attach_encoder(&intel_encoder->base,
21d40d37 EA	443	&intel_encoder->enc);
79e53945 JB	444	if (dvo->type == INTEL_DVO_CHIP_LVDS) {
	445	/* For our LVDS chipsets, we should hopefully be able
	446	* to dig the fixed panel mode out of the BIOS data.
	447	* However, it's in a different format from the BIOS
	448	* data on chipsets with integrated LVDS (stored in AIM
	449	* headers, likely), so for now, just get the current
	450	* mode being output through DVO.
	451	*/
	452	dvo->panel_fixed_mode =
	453	intel_dvo_get_current_mode(connector);
	454	dvo->panel_wants_dither = true;
	455	}
	456
	457	drm_sysfs_connector_add(connector);
	458	return;
	459	}
	460
21d40d37	461	intel_i2c_destroy(intel_encoder->ddc_bus);
79e53945 JB	462	/* Didn't find a chip, so tear down. */
	463	if (i2cbus != NULL)
	464	intel_i2c_destroy(i2cbus);
	465	free_intel:
21d40d37	466	kfree(intel_encoder);
79e53945	467	}