[linux-2.6-block.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 <linux/slab.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 drm_encoder *encoder = intel_attached_encoder(connector);
	struct intel_encoder *intel_encoder = enc_to_intel_encoder(encoder);
	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 drm_encoder *encoder = intel_attached_encoder(connector);
	struct intel_encoder *intel_encoder = enc_to_intel_encoder(encoder);
	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 drm_encoder *encoder = intel_attached_encoder(connector);
	struct intel_encoder *intel_encoder = enc_to_intel_encoder(encoder);
	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)
{
	drm_sysfs_connector_remove(connector);
	drm_connector_cleanup(connector);
	kfree(connector);
}

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_attached_encoder,
};

static void intel_dvo_enc_destroy(struct drm_encoder *encoder)
{
	struct intel_encoder *intel_encoder = enc_to_intel_encoder(encoder);
	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);
	}
	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_encoder_cleanup(encoder);
	kfree(intel_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 drm_encoder *encoder = intel_attached_encoder(connector);
	struct intel_encoder *intel_encoder = enc_to_intel_encoder(encoder);
	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_connector *intel_connector;
	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;

	intel_connector = kzalloc(sizeof(struct intel_connector), GFP_KERNEL);
	if (!intel_connector) {
		kfree(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_connector->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_connector->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);
	kfree(intel_connector);
}
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>
5a0e3ad6	28	#include <linux/slab.h>
79e53945 JB	29	#include "drmP.h"
	30	#include "drm.h"
	31	#include "drm_crtc.h"
	32	#include "intel_drv.h"
	33	#include "i915_drm.h"
	34	#include "i915_drv.h"
	35	#include "dvo.h"
	36
	37	#define SIL164_ADDR 0x38
	38	#define CH7xxx_ADDR 0x76
	39	#define TFP410_ADDR 0x38
	40
b358d0a6	41	static struct intel_dvo_device intel_dvo_devices[] = {
79e53945 JB	42	{
	43	.type = INTEL_DVO_CHIP_TMDS,
	44	.name = "sil164",
	45	.dvo_reg = DVOC,
	46	.slave_addr = SIL164_ADDR,
	47	.dev_ops = &sil164_ops,
	48	},
	49	{
	50	.type = INTEL_DVO_CHIP_TMDS,
	51	.name = "ch7xxx",
	52	.dvo_reg = DVOC,
	53	.slave_addr = CH7xxx_ADDR,
	54	.dev_ops = &ch7xxx_ops,
	55	},
	56	{
	57	.type = INTEL_DVO_CHIP_LVDS,
	58	.name = "ivch",
	59	.dvo_reg = DVOA,
	60	.slave_addr = 0x02, /* Might also be 0x44, 0x84, 0xc4 */
	61	.dev_ops = &ivch_ops,
	62	},
	63	{
	64	.type = INTEL_DVO_CHIP_TMDS,
	65	.name = "tfp410",
	66	.dvo_reg = DVOC,
	67	.slave_addr = TFP410_ADDR,
	68	.dev_ops = &tfp410_ops,
	69	},
	70	{
	71	.type = INTEL_DVO_CHIP_LVDS,
	72	.name = "ch7017",
	73	.dvo_reg = DVOC,
	74	.slave_addr = 0x75,
	75	.gpio = GPIOE,
	76	.dev_ops = &ch7017_ops,
	77	}
	78	};
	79
	80	static void intel_dvo_dpms(struct drm_encoder *encoder, int mode)
	81	{
	82	struct drm_i915_private *dev_priv = encoder->dev->dev_private;
21d40d37 EA	83	struct intel_encoder *intel_encoder = enc_to_intel_encoder(encoder);
21d40d37 EA	84	struct intel_dvo_device *dvo = intel_encoder->dev_priv;
79e53945 JB	85	u32 dvo_reg = dvo->dvo_reg;
	86	u32 temp = I915_READ(dvo_reg);
	87
	88	if (mode == DRM_MODE_DPMS_ON) {
	89	I915_WRITE(dvo_reg, temp \| DVO_ENABLE);
	90	I915_READ(dvo_reg);
	91	dvo->dev_ops->dpms(dvo, mode);
	92	} else {
	93	dvo->dev_ops->dpms(dvo, mode);
	94	I915_WRITE(dvo_reg, temp & ~DVO_ENABLE);
	95	I915_READ(dvo_reg);
	96	}
	97	}
	98
79e53945 JB	99	static int intel_dvo_mode_valid(struct drm_connector *connector,
	100	struct drm_display_mode *mode)
	101	{
599be16c ZW	102	struct drm_encoder *encoder = intel_attached_encoder(connector);
599be16c ZW	103	struct intel_encoder *intel_encoder = enc_to_intel_encoder(encoder);
21d40d37	104	struct intel_dvo_device *dvo = intel_encoder->dev_priv;
79e53945 JB	105
	106	if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
	107	return MODE_NO_DBLESCAN;
	108
	109	/* XXX: Validate clock range */
	110
	111	if (dvo->panel_fixed_mode) {
	112	if (mode->hdisplay > dvo->panel_fixed_mode->hdisplay)
	113	return MODE_PANEL;
	114	if (mode->vdisplay > dvo->panel_fixed_mode->vdisplay)
	115	return MODE_PANEL;
	116	}
	117
	118	return dvo->dev_ops->mode_valid(dvo, mode);
	119	}
	120
	121	static bool intel_dvo_mode_fixup(struct drm_encoder *encoder,
	122	struct drm_display_mode *mode,
	123	struct drm_display_mode *adjusted_mode)
	124	{
21d40d37 EA	125	struct intel_encoder *intel_encoder = enc_to_intel_encoder(encoder);
21d40d37 EA	126	struct intel_dvo_device *dvo = intel_encoder->dev_priv;
79e53945 JB	127
	128	/* If we have timings from the BIOS for the panel, put them in
	129	* to the adjusted mode. The CRTC will be set up for this mode,
	130	* with the panel scaling set up to source from the H/VDisplay
	131	* of the original mode.
	132	*/
	133	if (dvo->panel_fixed_mode != NULL) {
	134	#define C(x) adjusted_mode->x = dvo->panel_fixed_mode->x
	135	C(hdisplay);
	136	C(hsync_start);
	137	C(hsync_end);
	138	C(htotal);
	139	C(vdisplay);
	140	C(vsync_start);
	141	C(vsync_end);
	142	C(vtotal);
	143	C(clock);
	144	drm_mode_set_crtcinfo(adjusted_mode, CRTC_INTERLACE_HALVE_V);
	145	#undef C
	146	}
	147
	148	if (dvo->dev_ops->mode_fixup)
	149	return dvo->dev_ops->mode_fixup(dvo, mode, adjusted_mode);
	150
	151	return true;
	152	}
	153
	154	static void intel_dvo_mode_set(struct drm_encoder *encoder,
	155	struct drm_display_mode *mode,
	156	struct drm_display_mode *adjusted_mode)
	157	{
	158	struct drm_device *dev = encoder->dev;
	159	struct drm_i915_private *dev_priv = dev->dev_private;
	160	struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
21d40d37 EA	161	struct intel_encoder *intel_encoder = enc_to_intel_encoder(encoder);
21d40d37 EA	162	struct intel_dvo_device *dvo = intel_encoder->dev_priv;
79e53945 JB	163	int pipe = intel_crtc->pipe;
	164	u32 dvo_val;
	165	u32 dvo_reg = dvo->dvo_reg, dvo_srcdim_reg;
	166	int dpll_reg = (pipe == 0) ? DPLL_A : DPLL_B;
	167
	168	switch (dvo_reg) {
	169	case DVOA:
	170	default:
	171	dvo_srcdim_reg = DVOA_SRCDIM;
	172	break;
	173	case DVOB:
	174	dvo_srcdim_reg = DVOB_SRCDIM;
	175	break;
	176	case DVOC:
	177	dvo_srcdim_reg = DVOC_SRCDIM;
	178	break;
	179	}
	180
	181	dvo->dev_ops->mode_set(dvo, mode, adjusted_mode);
	182
	183	/* Save the data order, since I don't know what it should be set to. */
	184	dvo_val = I915_READ(dvo_reg) &
	185	(DVO_PRESERVE_MASK \| DVO_DATA_ORDER_GBRG);
	186	dvo_val \|= DVO_DATA_ORDER_FP \| DVO_BORDER_ENABLE \|
	187	DVO_BLANK_ACTIVE_HIGH;
	188
	189	if (pipe == 1)
	190	dvo_val \|= DVO_PIPE_B_SELECT;
	191	dvo_val \|= DVO_PIPE_STALL;
	192	if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC)
	193	dvo_val \|= DVO_HSYNC_ACTIVE_HIGH;
	194	if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC)
	195	dvo_val \|= DVO_VSYNC_ACTIVE_HIGH;
	196
	197	I915_WRITE(dpll_reg, I915_READ(dpll_reg) \| DPLL_DVO_HIGH_SPEED);
	198
	199	/*I915_WRITE(DVOB_SRCDIM,
	200	(adjusted_mode->hdisplay << DVO_SRCDIM_HORIZONTAL_SHIFT) \|
	201	(adjusted_mode->VDisplay << DVO_SRCDIM_VERTICAL_SHIFT));*/
	202	I915_WRITE(dvo_srcdim_reg,
	203	(adjusted_mode->hdisplay << DVO_SRCDIM_HORIZONTAL_SHIFT) \|
	204	(adjusted_mode->vdisplay << DVO_SRCDIM_VERTICAL_SHIFT));
	205	/I915_WRITE(DVOB, dvo_val);/
	206	I915_WRITE(dvo_reg, dvo_val);
	207	}
	208
	209	/**
	210	* Detect the output connection on our DVO device.
	211	*
	212	* Unimplemented.
	213	*/
	214	static enum drm_connector_status intel_dvo_detect(struct drm_connector *connector)
	215	{
599be16c ZW	216	struct drm_encoder *encoder = intel_attached_encoder(connector);
599be16c ZW	217	struct intel_encoder *intel_encoder = enc_to_intel_encoder(encoder);
21d40d37	218	struct intel_dvo_device *dvo = intel_encoder->dev_priv;
79e53945 JB	219
	220	return dvo->dev_ops->detect(dvo);
	221	}
	222
	223	static int intel_dvo_get_modes(struct drm_connector *connector)
	224	{
599be16c ZW	225	struct drm_encoder *encoder = intel_attached_encoder(connector);
599be16c ZW	226	struct intel_encoder *intel_encoder = enc_to_intel_encoder(encoder);
21d40d37	227	struct intel_dvo_device *dvo = intel_encoder->dev_priv;
79e53945 JB	228
	229	/* We should probably have an i2c driver get_modes function for those
	230	* devices which will have a fixed set of modes determined by the chip
	231	* (TV-out, for example), but for now with just TMDS and LVDS,
	232	* that's not the case.
	233	*/
335af9a2	234	intel_ddc_get_modes(connector, intel_encoder->ddc_bus);
79e53945 JB	235	if (!list_empty(&connector->probed_modes))
	236	return 1;
	237
	238
	239	if (dvo->panel_fixed_mode != NULL) {
	240	struct drm_display_mode *mode;
	241	mode = drm_mode_duplicate(connector->dev, dvo->panel_fixed_mode);
	242	if (mode) {
	243	drm_mode_probed_add(connector, mode);
	244	return 1;
	245	}
	246	}
	247	return 0;
	248	}
	249
	250	static void intel_dvo_destroy (struct drm_connector *connector)
	251	{
79e53945 JB	252	drm_sysfs_connector_remove(connector);
79e53945 JB	253	drm_connector_cleanup(connector);
599be16c	254	kfree(connector);
79e53945	255	}
79e53945 JB	256
	257	static const struct drm_encoder_helper_funcs intel_dvo_helper_funcs = {
	258	.dpms = intel_dvo_dpms,
	259	.mode_fixup = intel_dvo_mode_fixup,
	260	.prepare = intel_encoder_prepare,
	261	.mode_set = intel_dvo_mode_set,
	262	.commit = intel_encoder_commit,
	263	};
	264
	265	static const struct drm_connector_funcs intel_dvo_connector_funcs = {
c9fb15f6	266	.dpms = drm_helper_connector_dpms,
79e53945 JB	267	.detect = intel_dvo_detect,
	268	.destroy = intel_dvo_destroy,
	269	.fill_modes = drm_helper_probe_single_connector_modes,
	270	};
	271
	272	static const struct drm_connector_helper_funcs intel_dvo_connector_helper_funcs = {
	273	.mode_valid = intel_dvo_mode_valid,
	274	.get_modes = intel_dvo_get_modes,
599be16c	275	.best_encoder = intel_attached_encoder,
79e53945 JB	276	};
79e53945 JB	277
b358d0a6	278	static void intel_dvo_enc_destroy(struct drm_encoder *encoder)
79e53945	279	{
599be16c ZW	280	struct intel_encoder *intel_encoder = enc_to_intel_encoder(encoder);
	281	struct intel_dvo_device *dvo = intel_encoder->dev_priv;
	282
	283	if (dvo) {
	284	if (dvo->dev_ops->destroy)
	285	dvo->dev_ops->destroy(dvo);
	286	if (dvo->panel_fixed_mode)
	287	kfree(dvo->panel_fixed_mode);
	288	}
	289	if (intel_encoder->i2c_bus)
	290	intel_i2c_destroy(intel_encoder->i2c_bus);
	291	if (intel_encoder->ddc_bus)
	292	intel_i2c_destroy(intel_encoder->ddc_bus);
79e53945	293	drm_encoder_cleanup(encoder);
599be16c	294	kfree(intel_encoder);
79e53945 JB	295	}
	296
	297	static const struct drm_encoder_funcs intel_dvo_enc_funcs = {
	298	.destroy = intel_dvo_enc_destroy,
	299	};
	300
	301
	302	/**
	303	* Attempts to get a fixed panel timing for LVDS (currently only the i830).
	304	*
	305	* Other chips with DVO LVDS will need to extend this to deal with the LVDS
	306	* chip being on DVOB/C and having multiple pipes.
	307	*/
	308	static struct drm_display_mode *
	309	intel_dvo_get_current_mode (struct drm_connector *connector)
	310	{
	311	struct drm_device *dev = connector->dev;
	312	struct drm_i915_private *dev_priv = dev->dev_private;
599be16c ZW	313	struct drm_encoder *encoder = intel_attached_encoder(connector);
599be16c ZW	314	struct intel_encoder *intel_encoder = enc_to_intel_encoder(encoder);
21d40d37	315	struct intel_dvo_device *dvo = intel_encoder->dev_priv;
79e53945 JB	316	uint32_t dvo_reg = dvo->dvo_reg;
	317	uint32_t dvo_val = I915_READ(dvo_reg);
	318	struct drm_display_mode *mode = NULL;
	319
	320	/* If the DVO port is active, that'll be the LVDS, so we can pull out
	321	* its timings to get how the BIOS set up the panel.
	322	*/
	323	if (dvo_val & DVO_ENABLE) {
	324	struct drm_crtc *crtc;
	325	int pipe = (dvo_val & DVO_PIPE_B_SELECT) ? 1 : 0;
	326
	327	crtc = intel_get_crtc_from_pipe(dev, pipe);
	328	if (crtc) {
	329	mode = intel_crtc_mode_get(dev, crtc);
	330
	331	if (mode) {
	332	mode->type \|= DRM_MODE_TYPE_PREFERRED;
	333	if (dvo_val & DVO_HSYNC_ACTIVE_HIGH)
	334	mode->flags \|= DRM_MODE_FLAG_PHSYNC;
	335	if (dvo_val & DVO_VSYNC_ACTIVE_HIGH)
	336	mode->flags \|= DRM_MODE_FLAG_PVSYNC;
	337	}
	338	}
	339	}
	340	return mode;
	341	}
	342
	343	void intel_dvo_init(struct drm_device *dev)
	344	{
21d40d37	345	struct intel_encoder *intel_encoder;
599be16c	346	struct intel_connector *intel_connector;
79e53945	347	struct intel_dvo_device *dvo;
f9c10a9b	348	struct i2c_adapter *i2cbus = NULL;
79e53945 JB	349	int ret = 0;
79e53945 JB	350	int i;
79e53945	351	int encoder_type = DRM_MODE_ENCODER_NONE;
21d40d37 EA	352	intel_encoder = kzalloc (sizeof(struct intel_encoder), GFP_KERNEL);
21d40d37 EA	353	if (!intel_encoder)
79e53945 JB	354	return;
79e53945 JB	355
599be16c ZW	356	intel_connector = kzalloc(sizeof(struct intel_connector), GFP_KERNEL);
	357	if (!intel_connector) {
	358	kfree(intel_encoder);
	359	return;
	360	}
	361
79e53945	362	/* Set up the DDC bus */
21d40d37 EA	363	intel_encoder->ddc_bus = intel_i2c_create(dev, GPIOD, "DVODDC_D");
21d40d37 EA	364	if (!intel_encoder->ddc_bus)
79e53945 JB	365	goto free_intel;
	366
	367	/* Now, try to find a controller */
	368	for (i = 0; i < ARRAY_SIZE(intel_dvo_devices); i++) {
599be16c	369	struct drm_connector *connector = &intel_connector->base;
79e53945 JB	370	int gpio;
	371
	372	dvo = &intel_dvo_devices[i];
	373
	374	/* Allow the I2C driver info to specify the GPIO to be used in
	375	* special cases, but otherwise default to what's defined
	376	* in the spec.
	377	*/
	378	if (dvo->gpio != 0)
	379	gpio = dvo->gpio;
	380	else if (dvo->type == INTEL_DVO_CHIP_LVDS)
	381	gpio = GPIOB;
	382	else
	383	gpio = GPIOE;
	384
	385	/* Set up the I2C bus necessary for the chip we're probing.
	386	* It appears that everything is on GPIOE except for panels
	387	* on i830 laptops, which are on GPIOB (DVOA).
	388	*/
f9c10a9b KP	389	if (i2cbus != NULL)
	390	intel_i2c_destroy(i2cbus);
	391	if (!(i2cbus = intel_i2c_create(dev, gpio,
	392	gpio == GPIOB ? "DVOI2C_B" : "DVOI2C_E"))) {
	393	continue;
79e53945 JB	394	}
	395
	396	if (dvo->dev_ops!= NULL)
	397	ret = dvo->dev_ops->init(dvo, i2cbus);
	398	else
	399	ret = false;
	400
	401	if (!ret)
	402	continue;
	403
21d40d37 EA	404	intel_encoder->type = INTEL_OUTPUT_DVO;
21d40d37 EA	405	intel_encoder->crtc_mask = (1 << 0) \| (1 << 1);
79e53945 JB	406	switch (dvo->type) {
79e53945 JB	407	case INTEL_DVO_CHIP_TMDS:
21d40d37	408	intel_encoder->clone_mask =
f8aed700 ML	409	(1 << INTEL_DVO_TMDS_CLONE_BIT) \|
f8aed700 ML	410	(1 << INTEL_ANALOG_CLONE_BIT);
79e53945 JB	411	drm_connector_init(dev, connector,
	412	&intel_dvo_connector_funcs,
	413	DRM_MODE_CONNECTOR_DVII);
	414	encoder_type = DRM_MODE_ENCODER_TMDS;
	415	break;
	416	case INTEL_DVO_CHIP_LVDS:
21d40d37	417	intel_encoder->clone_mask =
f8aed700	418	(1 << INTEL_DVO_LVDS_CLONE_BIT);
79e53945 JB	419	drm_connector_init(dev, connector,
	420	&intel_dvo_connector_funcs,
	421	DRM_MODE_CONNECTOR_LVDS);
	422	encoder_type = DRM_MODE_ENCODER_LVDS;
	423	break;
	424	}
	425
	426	drm_connector_helper_add(connector,
	427	&intel_dvo_connector_helper_funcs);
	428	connector->display_info.subpixel_order = SubPixelHorizontalRGB;
	429	connector->interlace_allowed = false;
	430	connector->doublescan_allowed = false;
	431
21d40d37 EA	432	intel_encoder->dev_priv = dvo;
21d40d37 EA	433	intel_encoder->i2c_bus = i2cbus;
79e53945	434
21d40d37	435	drm_encoder_init(dev, &intel_encoder->enc,
79e53945	436	&intel_dvo_enc_funcs, encoder_type);
21d40d37	437	drm_encoder_helper_add(&intel_encoder->enc,
79e53945 JB	438	&intel_dvo_helper_funcs);
79e53945 JB	439
599be16c	440	drm_mode_connector_attach_encoder(&intel_connector->base,
21d40d37	441	&intel_encoder->enc);
79e53945 JB	442	if (dvo->type == INTEL_DVO_CHIP_LVDS) {
	443	/* For our LVDS chipsets, we should hopefully be able
	444	* to dig the fixed panel mode out of the BIOS data.
	445	* However, it's in a different format from the BIOS
	446	* data on chipsets with integrated LVDS (stored in AIM
	447	* headers, likely), so for now, just get the current
	448	* mode being output through DVO.
	449	*/
	450	dvo->panel_fixed_mode =
	451	intel_dvo_get_current_mode(connector);
	452	dvo->panel_wants_dither = true;
	453	}
	454
	455	drm_sysfs_connector_add(connector);
	456	return;
	457	}
	458
21d40d37	459	intel_i2c_destroy(intel_encoder->ddc_bus);
79e53945 JB	460	/* Didn't find a chip, so tear down. */
	461	if (i2cbus != NULL)
	462	intel_i2c_destroy(i2cbus);
	463	free_intel:
21d40d37	464	kfree(intel_encoder);
599be16c	465	kfree(intel_connector);
79e53945	466	}