[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 <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_output *intel_output = enc_to_intel_output(encoder);
	struct intel_dvo_device *dvo = intel_output->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_output *intel_output = to_intel_output(connector);
	struct intel_dvo_device *dvo = intel_output->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_output *intel_output = to_intel_output(connector);
	struct intel_dvo_device *dvo = intel_output->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_output *intel_output = to_intel_output(connector);
	struct intel_dvo_device *dvo = intel_output->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_output *intel_output = enc_to_intel_output(encoder);
	struct intel_dvo_device *dvo = intel_output->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_output *intel_output = enc_to_intel_output(encoder);
	struct intel_dvo_device *dvo = intel_output->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_output *intel_output = to_intel_output(connector);
	struct intel_dvo_device *dvo = intel_output->dev_priv;

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

static int intel_dvo_get_modes(struct drm_connector *connector)
{
	struct intel_output *intel_output = to_intel_output(connector);
	struct intel_dvo_device *dvo = intel_output->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(intel_output);
	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_output *intel_output = to_intel_output(connector);
	struct intel_dvo_device *dvo = intel_output->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_output->i2c_bus)
		intel_i2c_destroy(intel_output->i2c_bus);
	if (intel_output->ddc_bus)
		intel_i2c_destroy(intel_output->ddc_bus);
	drm_sysfs_connector_remove(connector);
	drm_connector_cleanup(connector);
	kfree(intel_output);
}

#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_output *intel_output = to_intel_output(connector);
	struct intel_dvo_device *dvo = intel_output->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_output *intel_output = to_intel_output(connector);
	struct intel_dvo_device *dvo = intel_output->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_output *intel_output;
	struct intel_dvo_device *dvo;
	struct i2c_adapter *i2cbus = NULL;
	int ret = 0;
	int i;
	int encoder_type = DRM_MODE_ENCODER_NONE;
	intel_output = kzalloc (sizeof(struct intel_output), GFP_KERNEL);
	if (!intel_output)
		return;

	/* Set up the DDC bus */
	intel_output->ddc_bus = intel_i2c_create(dev, GPIOD, "DVODDC_D");
	if (!intel_output->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_output->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_output->type = INTEL_OUTPUT_DVO;
		intel_output->crtc_mask = (1 << 0) | (1 << 1);
		switch (dvo->type) {
		case INTEL_DVO_CHIP_TMDS:
			intel_output->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_output->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_output->dev_priv = dvo;
		intel_output->i2c_bus = i2cbus;

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

		drm_mode_connector_attach_encoder(&intel_output->base,
						  &intel_output->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_output->ddc_bus);
	/* Didn't find a chip, so tear down. */
	if (i2cbus != NULL)
		intel_i2c_destroy(i2cbus);
free_intel:
	kfree(intel_output);
}
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;
	83	struct intel_output *intel_output = enc_to_intel_output(encoder);
	84	struct intel_dvo_device *dvo = intel_output->dev_priv;
	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
	99	static void intel_dvo_save(struct drm_connector *connector)
	100	{
	101	struct drm_i915_private *dev_priv = connector->dev->dev_private;
	102	struct intel_output *intel_output = to_intel_output(connector);
	103	struct intel_dvo_device *dvo = intel_output->dev_priv;
	104
	105	/* Each output should probably just save the registers it touches,
106	* but for now, use more overkill.
107	*/
108	dev_priv->saveDVOA = I915_READ(DVOA);
109	dev_priv->saveDVOB = I915_READ(DVOB);
110	dev_priv->saveDVOC = I915_READ(DVOC);
111
112	dvo->dev_ops->save(dvo);
113	}
114
115	static void intel_dvo_restore(struct drm_connector *connector)
116	{
117	struct drm_i915_private *dev_priv = connector->dev->dev_private;
118	struct intel_output *intel_output = to_intel_output(connector);
119	struct intel_dvo_device *dvo = intel_output->dev_priv;
120
121	dvo->dev_ops->restore(dvo);
122
123	I915_WRITE(DVOA, dev_priv->saveDVOA);
124	I915_WRITE(DVOB, dev_priv->saveDVOB);
125	I915_WRITE(DVOC, dev_priv->saveDVOC);
126	}
127
128	static int intel_dvo_mode_valid(struct drm_connector *connector,
129	struct drm_display_mode *mode)
130	{
131	struct intel_output *intel_output = to_intel_output(connector);
132	struct intel_dvo_device *dvo = intel_output->dev_priv;
133
134	if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
135	return MODE_NO_DBLESCAN;
136
137	/* XXX: Validate clock range */
138
139	if (dvo->panel_fixed_mode) {
140	if (mode->hdisplay > dvo->panel_fixed_mode->hdisplay)
141	return MODE_PANEL;
142	if (mode->vdisplay > dvo->panel_fixed_mode->vdisplay)
143	return MODE_PANEL;
144	}
145
146	return dvo->dev_ops->mode_valid(dvo, mode);
147	}
148
149	static bool intel_dvo_mode_fixup(struct drm_encoder *encoder,
150	struct drm_display_mode *mode,
151	struct drm_display_mode *adjusted_mode)
152	{
153	struct intel_output *intel_output = enc_to_intel_output(encoder);
154	struct intel_dvo_device *dvo = intel_output->dev_priv;
155
156	/* If we have timings from the BIOS for the panel, put them in
157	* to the adjusted mode. The CRTC will be set up for this mode,
158	* with the panel scaling set up to source from the H/VDisplay
159	* of the original mode.
160	*/
161	if (dvo->panel_fixed_mode != NULL) {
162	#define C(x) adjusted_mode->x = dvo->panel_fixed_mode->x
163	C(hdisplay);
164	C(hsync_start);
165	C(hsync_end);
166	C(htotal);
167	C(vdisplay);
168	C(vsync_start);
169	C(vsync_end);
170	C(vtotal);
171	C(clock);
172	drm_mode_set_crtcinfo(adjusted_mode, CRTC_INTERLACE_HALVE_V);
173	#undef C
174	}
175
176	if (dvo->dev_ops->mode_fixup)
177	return dvo->dev_ops->mode_fixup(dvo, mode, adjusted_mode);
178
179	return true;
180	}
181
182	static void intel_dvo_mode_set(struct drm_encoder *encoder,
183	struct drm_display_mode *mode,
184	struct drm_display_mode *adjusted_mode)
185	{
186	struct drm_device *dev = encoder->dev;
187	struct drm_i915_private *dev_priv = dev->dev_private;
188	struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
189	struct intel_output *intel_output = enc_to_intel_output(encoder);
190	struct intel_dvo_device *dvo = intel_output->dev_priv;
191	int pipe = intel_crtc->pipe;
192	u32 dvo_val;
193	u32 dvo_reg = dvo->dvo_reg, dvo_srcdim_reg;
194	int dpll_reg = (pipe == 0) ? DPLL_A : DPLL_B;
195
196	switch (dvo_reg) {
197	case DVOA:
198	default:
199	dvo_srcdim_reg = DVOA_SRCDIM;
200	break;
201	case DVOB:
202	dvo_srcdim_reg = DVOB_SRCDIM;
203	break;
204	case DVOC:
205	dvo_srcdim_reg = DVOC_SRCDIM;
206	break;
207	}
208
209	dvo->dev_ops->mode_set(dvo, mode, adjusted_mode);
210
211	/* Save the data order, since I don't know what it should be set to. */
212	dvo_val = I915_READ(dvo_reg) &
213	(DVO_PRESERVE_MASK \| DVO_DATA_ORDER_GBRG);
214	dvo_val \|= DVO_DATA_ORDER_FP \| DVO_BORDER_ENABLE \|
215	DVO_BLANK_ACTIVE_HIGH;
216
217	if (pipe == 1)
218	dvo_val \|= DVO_PIPE_B_SELECT;
219	dvo_val \|= DVO_PIPE_STALL;
220	if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC)
221	dvo_val \|= DVO_HSYNC_ACTIVE_HIGH;
222	if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC)
223	dvo_val \|= DVO_VSYNC_ACTIVE_HIGH;
224
225	I915_WRITE(dpll_reg, I915_READ(dpll_reg) \| DPLL_DVO_HIGH_SPEED);
226
227	/*I915_WRITE(DVOB_SRCDIM,
228	(adjusted_mode->hdisplay << DVO_SRCDIM_HORIZONTAL_SHIFT) \|
229	(adjusted_mode->VDisplay << DVO_SRCDIM_VERTICAL_SHIFT));*/
230	I915_WRITE(dvo_srcdim_reg,
231	(adjusted_mode->hdisplay << DVO_SRCDIM_HORIZONTAL_SHIFT) \|
232	(adjusted_mode->vdisplay << DVO_SRCDIM_VERTICAL_SHIFT));
233	/I915_WRITE(DVOB, dvo_val);/
234	I915_WRITE(dvo_reg, dvo_val);
235	}
236
237	/**
238	* Detect the output connection on our DVO device.
239	*
240	* Unimplemented.
241	*/
242	static enum drm_connector_status intel_dvo_detect(struct drm_connector *connector)
243	{
244	struct intel_output *intel_output = to_intel_output(connector);
245	struct intel_dvo_device *dvo = intel_output->dev_priv;
246
247	return dvo->dev_ops->detect(dvo);
248	}
249
250	static int intel_dvo_get_modes(struct drm_connector *connector)
251	{
252	struct intel_output *intel_output = to_intel_output(connector);
253	struct intel_dvo_device *dvo = intel_output->dev_priv;
254
255	/* We should probably have an i2c driver get_modes function for those
256	* devices which will have a fixed set of modes determined by the chip
257	* (TV-out, for example), but for now with just TMDS and LVDS,
258	* that's not the case.
259	*/
260	intel_ddc_get_modes(intel_output);
261	if (!list_empty(&connector->probed_modes))
262	return 1;
263
264
265	if (dvo->panel_fixed_mode != NULL) {
266	struct drm_display_mode *mode;
267	mode = drm_mode_duplicate(connector->dev, dvo->panel_fixed_mode);
268	if (mode) {
269	drm_mode_probed_add(connector, mode);
270	return 1;
271	}
272	}
273	return 0;
274	}
275
276	static void intel_dvo_destroy (struct drm_connector *connector)
277	{
278	struct intel_output *intel_output = to_intel_output(connector);
279	struct intel_dvo_device *dvo = intel_output->dev_priv;
280
281	if (dvo) {
282	if (dvo->dev_ops->destroy)
283	dvo->dev_ops->destroy(dvo);
284	if (dvo->panel_fixed_mode)
285	kfree(dvo->panel_fixed_mode);
286	/* no need, in i830_dvoices[] now */
287	//kfree(dvo);
288	}
289	if (intel_output->i2c_bus)
290	intel_i2c_destroy(intel_output->i2c_bus);
291	if (intel_output->ddc_bus)
292	intel_i2c_destroy(intel_output->ddc_bus);
293	drm_sysfs_connector_remove(connector);
294	drm_connector_cleanup(connector);
295	kfree(intel_output);
296	}
297
298	#ifdef RANDR_GET_CRTC_INTERFACE
299	static struct drm_crtc intel_dvo_get_crtc(struct drm_connector connector)
300	{
301	struct drm_device *dev = connector->dev;
302	struct drm_i915_private *dev_priv = dev->dev_private;
303	struct intel_output *intel_output = to_intel_output(connector);
304	struct intel_dvo_device *dvo = intel_output->dev_priv;
305	int pipe = !!(I915_READ(dvo->dvo_reg) & SDVO_PIPE_B_SELECT);
306
307	return intel_pipe_to_crtc(pScrn, pipe);
308	}
309	#endif
310
311	static const struct drm_encoder_helper_funcs intel_dvo_helper_funcs = {
312	.dpms = intel_dvo_dpms,
313	.mode_fixup = intel_dvo_mode_fixup,
314	.prepare = intel_encoder_prepare,
315	.mode_set = intel_dvo_mode_set,
316	.commit = intel_encoder_commit,
317	};
318
319	static const struct drm_connector_funcs intel_dvo_connector_funcs = {
c9fb15f6	320	.dpms = drm_helper_connector_dpms,
79e53945 JB	321	.save = intel_dvo_save,
	322	.restore = intel_dvo_restore,
	323	.detect = intel_dvo_detect,
	324	.destroy = intel_dvo_destroy,
	325	.fill_modes = drm_helper_probe_single_connector_modes,
	326	};
	327
	328	static const struct drm_connector_helper_funcs intel_dvo_connector_helper_funcs = {
	329	.mode_valid = intel_dvo_mode_valid,
	330	.get_modes = intel_dvo_get_modes,
	331	.best_encoder = intel_best_encoder,
	332	};
	333
b358d0a6	334	static void intel_dvo_enc_destroy(struct drm_encoder *encoder)
79e53945 JB	335	{
	336	drm_encoder_cleanup(encoder);
	337	}
	338
	339	static const struct drm_encoder_funcs intel_dvo_enc_funcs = {
	340	.destroy = intel_dvo_enc_destroy,
	341	};
	342
	343
	344	/**
	345	* Attempts to get a fixed panel timing for LVDS (currently only the i830).
	346	*
	347	* Other chips with DVO LVDS will need to extend this to deal with the LVDS
	348	* chip being on DVOB/C and having multiple pipes.
	349	*/
	350	static struct drm_display_mode *
	351	intel_dvo_get_current_mode (struct drm_connector *connector)
	352	{
	353	struct drm_device *dev = connector->dev;
	354	struct drm_i915_private *dev_priv = dev->dev_private;
	355	struct intel_output *intel_output = to_intel_output(connector);
	356	struct intel_dvo_device *dvo = intel_output->dev_priv;
	357	uint32_t dvo_reg = dvo->dvo_reg;
	358	uint32_t dvo_val = I915_READ(dvo_reg);
	359	struct drm_display_mode *mode = NULL;
	360
	361	/* If the DVO port is active, that'll be the LVDS, so we can pull out
	362	* its timings to get how the BIOS set up the panel.
	363	*/
	364	if (dvo_val & DVO_ENABLE) {
	365	struct drm_crtc *crtc;
	366	int pipe = (dvo_val & DVO_PIPE_B_SELECT) ? 1 : 0;
	367
	368	crtc = intel_get_crtc_from_pipe(dev, pipe);
	369	if (crtc) {
	370	mode = intel_crtc_mode_get(dev, crtc);
	371
	372	if (mode) {
	373	mode->type \|= DRM_MODE_TYPE_PREFERRED;
	374	if (dvo_val & DVO_HSYNC_ACTIVE_HIGH)
	375	mode->flags \|= DRM_MODE_FLAG_PHSYNC;
	376	if (dvo_val & DVO_VSYNC_ACTIVE_HIGH)
	377	mode->flags \|= DRM_MODE_FLAG_PVSYNC;
	378	}
	379	}
	380	}
	381	return mode;
	382	}
	383
	384	void intel_dvo_init(struct drm_device *dev)
	385	{
	386	struct intel_output *intel_output;
	387	struct intel_dvo_device *dvo;
f9c10a9b	388	struct i2c_adapter *i2cbus = NULL;
79e53945 JB	389	int ret = 0;
79e53945 JB	390	int i;
79e53945 JB	391	int encoder_type = DRM_MODE_ENCODER_NONE;
	392	intel_output = kzalloc (sizeof(struct intel_output), GFP_KERNEL);
	393	if (!intel_output)
	394	return;
	395
	396	/* Set up the DDC bus */
	397	intel_output->ddc_bus = intel_i2c_create(dev, GPIOD, "DVODDC_D");
	398	if (!intel_output->ddc_bus)
	399	goto free_intel;
	400
	401	/* Now, try to find a controller */
	402	for (i = 0; i < ARRAY_SIZE(intel_dvo_devices); i++) {
	403	struct drm_connector *connector = &intel_output->base;
	404	int gpio;
	405
	406	dvo = &intel_dvo_devices[i];
	407
	408	/* Allow the I2C driver info to specify the GPIO to be used in
	409	* special cases, but otherwise default to what's defined
	410	* in the spec.
	411	*/
	412	if (dvo->gpio != 0)
	413	gpio = dvo->gpio;
	414	else if (dvo->type == INTEL_DVO_CHIP_LVDS)
	415	gpio = GPIOB;
	416	else
	417	gpio = GPIOE;
	418
	419	/* Set up the I2C bus necessary for the chip we're probing.
	420	* It appears that everything is on GPIOE except for panels
	421	* on i830 laptops, which are on GPIOB (DVOA).
	422	*/
f9c10a9b KP	423	if (i2cbus != NULL)
	424	intel_i2c_destroy(i2cbus);
	425	if (!(i2cbus = intel_i2c_create(dev, gpio,
	426	gpio == GPIOB ? "DVOI2C_B" : "DVOI2C_E"))) {
	427	continue;
79e53945 JB	428	}
	429
	430	if (dvo->dev_ops!= NULL)
	431	ret = dvo->dev_ops->init(dvo, i2cbus);
	432	else
	433	ret = false;
	434
	435	if (!ret)
	436	continue;
	437
	438	intel_output->type = INTEL_OUTPUT_DVO;
f8aed700	439	intel_output->crtc_mask = (1 << 0) \| (1 << 1);
79e53945 JB	440	switch (dvo->type) {
79e53945 JB	441	case INTEL_DVO_CHIP_TMDS:
f8aed700 ML	442	intel_output->clone_mask =
	443	(1 << INTEL_DVO_TMDS_CLONE_BIT) \|
	444	(1 << INTEL_ANALOG_CLONE_BIT);
79e53945 JB	445	drm_connector_init(dev, connector,
	446	&intel_dvo_connector_funcs,
	447	DRM_MODE_CONNECTOR_DVII);
	448	encoder_type = DRM_MODE_ENCODER_TMDS;
	449	break;
	450	case INTEL_DVO_CHIP_LVDS:
f8aed700 ML	451	intel_output->clone_mask =
f8aed700 ML	452	(1 << INTEL_DVO_LVDS_CLONE_BIT);
79e53945 JB	453	drm_connector_init(dev, connector,
	454	&intel_dvo_connector_funcs,
	455	DRM_MODE_CONNECTOR_LVDS);
	456	encoder_type = DRM_MODE_ENCODER_LVDS;
	457	break;
	458	}
	459
	460	drm_connector_helper_add(connector,
	461	&intel_dvo_connector_helper_funcs);
	462	connector->display_info.subpixel_order = SubPixelHorizontalRGB;
	463	connector->interlace_allowed = false;
	464	connector->doublescan_allowed = false;
	465
	466	intel_output->dev_priv = dvo;
	467	intel_output->i2c_bus = i2cbus;
	468
	469	drm_encoder_init(dev, &intel_output->enc,
	470	&intel_dvo_enc_funcs, encoder_type);
	471	drm_encoder_helper_add(&intel_output->enc,
	472	&intel_dvo_helper_funcs);
	473
	474	drm_mode_connector_attach_encoder(&intel_output->base,
	475	&intel_output->enc);
	476	if (dvo->type == INTEL_DVO_CHIP_LVDS) {
	477	/* For our LVDS chipsets, we should hopefully be able
	478	* to dig the fixed panel mode out of the BIOS data.
	479	* However, it's in a different format from the BIOS
	480	* data on chipsets with integrated LVDS (stored in AIM
	481	* headers, likely), so for now, just get the current
	482	* mode being output through DVO.
	483	*/
	484	dvo->panel_fixed_mode =
	485	intel_dvo_get_current_mode(connector);
	486	dvo->panel_wants_dither = true;
	487	}
	488
	489	drm_sysfs_connector_add(connector);
	490	return;
	491	}
	492
	493	intel_i2c_destroy(intel_output->ddc_bus);
	494	/* Didn't find a chip, so tear down. */
	495	if (i2cbus != NULL)
	496	intel_i2c_destroy(i2cbus);
	497	free_intel:
	498	kfree(intel_output);
	499	}