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/*

 * Copyright 2007-8 Advanced Micro Devices, Inc.

 * Copyright 2008 Red Hat Inc.

 *

 * 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 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) 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: Dave Airlie

 *          Alex Deucher

 */

#include 

#include 

#include 

#include "radeon.h"

#include "atom.h"

extern void

radeon_legacy_backlight_init(struct radeon_encoder *radeon_encoder,

			     struct drm_connector *drm_connector);

extern void

radeon_atom_backlight_init(struct radeon_encoder *radeon_encoder,

			   struct drm_connector *drm_connector);

static uint32_t radeon_encoder_clones(struct drm_encoder *encoder)

{

	struct drm_device *dev = encoder->dev;

	struct radeon_device *rdev = dev->dev_private;

	struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);

	struct drm_encoder *clone_encoder;

	uint32_t index_mask = 0;

	int count;

	/* DIG routing gets problematic */

	if (rdev->family >= CHIP_R600)

		return index_mask;

	/* LVDS/TV are too wacky */

	if (radeon_encoder->devices & ATOM_DEVICE_LCD_SUPPORT)

		return index_mask;

	/* DVO requires 2x ppll clocks depending on tmds chip */

	if (radeon_encoder->devices & ATOM_DEVICE_DFP2_SUPPORT)

		return index_mask;

	count = -1;

	list_for_each_entry(clone_encoder, &dev->mode_config.encoder_list, head) {

		struct radeon_encoder *radeon_clone = to_radeon_encoder(clone_encoder);

		count++;

		if (clone_encoder == encoder)

			continue;

		if (radeon_clone->devices & (ATOM_DEVICE_LCD_SUPPORT))

			continue;

		if (radeon_clone->devices & ATOM_DEVICE_DFP2_SUPPORT)

			continue;

		else

			index_mask |= (1 << count);

	}

	return index_mask;

}

void radeon_setup_encoder_clones(struct drm_device *dev)

{

	struct drm_encoder *encoder;

	list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {

		encoder->possible_clones = radeon_encoder_clones(encoder);

	}

}

uint32_t

radeon_get_encoder_enum(struct drm_device *dev, uint32_t supported_device, uint8_t dac)

{

	struct radeon_device *rdev = dev->dev_private;

	uint32_t ret = 0;

	switch (supported_device) {

	case ATOM_DEVICE_CRT1_SUPPORT:

	case ATOM_DEVICE_TV1_SUPPORT:

	case ATOM_DEVICE_TV2_SUPPORT:

	case ATOM_DEVICE_CRT2_SUPPORT:

	case ATOM_DEVICE_CV_SUPPORT:

		switch (dac) {

		case 1: /* dac a */

			if ((rdev->family == CHIP_RS300) ||

			    (rdev->family == CHIP_RS400) ||

			    (rdev->family == CHIP_RS480))

				ret = ENCODER_INTERNAL_DAC2_ENUM_ID1;

			else if (ASIC_IS_AVIVO(rdev))

				ret = ENCODER_INTERNAL_KLDSCP_DAC1_ENUM_ID1;

			else

				ret = ENCODER_INTERNAL_DAC1_ENUM_ID1;

			break;

		case 2: /* dac b */

			if (ASIC_IS_AVIVO(rdev))

				ret = ENCODER_INTERNAL_KLDSCP_DAC2_ENUM_ID1;

			else {

				/*if (rdev->family == CHIP_R200)

				  ret = ENCODER_INTERNAL_DVO1_ENUM_ID1;

				  else*/

				ret = ENCODER_INTERNAL_DAC2_ENUM_ID1;

			}

			break;

		case 3: /* external dac */

			if (ASIC_IS_AVIVO(rdev))

				ret = ENCODER_INTERNAL_KLDSCP_DVO1_ENUM_ID1;

			else

				ret = ENCODER_INTERNAL_DVO1_ENUM_ID1;

			break;

		}

		break;

	case ATOM_DEVICE_LCD1_SUPPORT:

		if (ASIC_IS_AVIVO(rdev))

			ret = ENCODER_INTERNAL_LVTM1_ENUM_ID1;

		else

			ret = ENCODER_INTERNAL_LVDS_ENUM_ID1;

		break;

	case ATOM_DEVICE_DFP1_SUPPORT:

		if ((rdev->family == CHIP_RS300) ||

		    (rdev->family == CHIP_RS400) ||

		    (rdev->family == CHIP_RS480))

			ret = ENCODER_INTERNAL_DVO1_ENUM_ID1;

		else if (ASIC_IS_AVIVO(rdev))

			ret = ENCODER_INTERNAL_KLDSCP_TMDS1_ENUM_ID1;

		else

			ret = ENCODER_INTERNAL_TMDS1_ENUM_ID1;

		break;

	case ATOM_DEVICE_LCD2_SUPPORT:

	case ATOM_DEVICE_DFP2_SUPPORT:

		if ((rdev->family == CHIP_RS600) ||

		    (rdev->family == CHIP_RS690) ||

		    (rdev->family == CHIP_RS740))

			ret = ENCODER_INTERNAL_DDI_ENUM_ID1;

		else if (ASIC_IS_AVIVO(rdev))

			ret = ENCODER_INTERNAL_KLDSCP_DVO1_ENUM_ID1;

		else

			ret = ENCODER_INTERNAL_DVO1_ENUM_ID1;

		break;

	case ATOM_DEVICE_DFP3_SUPPORT:

		ret = ENCODER_INTERNAL_LVTM1_ENUM_ID1;

		break;

	}

	return ret;

}

static void radeon_encoder_add_backlight(struct radeon_encoder *radeon_encoder,

					 struct drm_connector *connector)

{

	struct drm_device *dev = radeon_encoder->base.dev;

	struct radeon_device *rdev = dev->dev_private;

	bool use_bl = false;

	if (!(radeon_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT)))

		return;

	if (radeon_backlight == 0) {

		return;

	} else if (radeon_backlight == 1) {

		use_bl = true;

	} else if (radeon_backlight == -1) {

		/* Quirks */

		/* Amilo Xi 2550 only works with acpi bl */

		if ((rdev->pdev->device == 0x9583) &&

		    (rdev->pdev->subsystem_vendor == 0x1734) &&

		    (rdev->pdev->subsystem_device == 0x1107))

			use_bl = false;

/* Older PPC macs use on-GPU backlight controller */

#ifndef CONFIG_PPC_PMAC

		/* disable native backlight control on older asics */

		else if (rdev->family < CHIP_R600)

			use_bl = false;

#endif

		else

			use_bl = true;

	}

	if (use_bl) {

		if (rdev->is_atom_bios)

			radeon_atom_backlight_init(radeon_encoder, connector);

		else

			radeon_legacy_backlight_init(radeon_encoder, connector);

	}

}

void

radeon_link_encoder_connector(struct drm_device *dev)

{

	struct drm_connector *connector;

	struct radeon_connector *radeon_connector;

	struct drm_encoder *encoder;

	struct radeon_encoder *radeon_encoder;

	/* walk the list and link encoders to connectors */

	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {

		radeon_connector = to_radeon_connector(connector);

		list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {

			radeon_encoder = to_radeon_encoder(encoder);

			if (radeon_encoder->devices & radeon_connector->devices) {

				drm_mode_connector_attach_encoder(connector, encoder);

				if (radeon_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT))

					radeon_encoder_add_backlight(radeon_encoder, connector);

			}

		}

	}

}

void radeon_encoder_set_active_device(struct drm_encoder *encoder)

{

	struct drm_device *dev = encoder->dev;

	struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);

	struct drm_connector *connector;

	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {

		if (connector->encoder == encoder) {

			struct radeon_connector *radeon_connector = to_radeon_connector(connector);

			radeon_encoder->active_device = radeon_encoder->devices & radeon_connector->devices;

			DRM_DEBUG_KMS("setting active device to %08x from %08x %08x for encoder %d\n",

				  radeon_encoder->active_device, radeon_encoder->devices,

				  radeon_connector->devices, encoder->encoder_type);

		}

	}

}

struct drm_connector *

radeon_get_connector_for_encoder(struct drm_encoder *encoder)

{

	struct drm_device *dev = encoder->dev;

	struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);

	struct drm_connector *connector;

	struct radeon_connector *radeon_connector;

	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {

		radeon_connector = to_radeon_connector(connector);

		if (radeon_encoder->is_mst_encoder) {

			struct radeon_encoder_mst *mst_enc;

			if (!radeon_connector->is_mst_connector)

				continue;

			mst_enc = radeon_encoder->enc_priv;

			if (mst_enc->connector == radeon_connector->mst_port)

				return connector;

		} else if (radeon_encoder->active_device & radeon_connector->devices)

			return connector;

	}

	return NULL;

}

struct drm_connector *

radeon_get_connector_for_encoder_init(struct drm_encoder *encoder)

{

	struct drm_device *dev = encoder->dev;

	struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);

	struct drm_connector *connector;

	struct radeon_connector *radeon_connector;

	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {

		radeon_connector = to_radeon_connector(connector);

		if (radeon_encoder->devices & radeon_connector->devices)

			return connector;

	}

	return NULL;

}

struct drm_encoder *radeon_get_external_encoder(struct drm_encoder *encoder)

{

	struct drm_device *dev = encoder->dev;

	struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);

	struct drm_encoder *other_encoder;

	struct radeon_encoder *other_radeon_encoder;

	if (radeon_encoder->is_ext_encoder)

		return NULL;

	list_for_each_entry(other_encoder, &dev->mode_config.encoder_list, head) {

		if (other_encoder == encoder)

			continue;

		other_radeon_encoder = to_radeon_encoder(other_encoder);

		if (other_radeon_encoder->is_ext_encoder &&

		    (radeon_encoder->devices & other_radeon_encoder->devices))

			return other_encoder;

	}

	return NULL;

}

u16 radeon_encoder_get_dp_bridge_encoder_id(struct drm_encoder *encoder)

{

	struct drm_encoder *other_encoder = radeon_get_external_encoder(encoder);

	if (other_encoder) {

		struct radeon_encoder *radeon_encoder = to_radeon_encoder(other_encoder);

		switch (radeon_encoder->encoder_id) {

		case ENCODER_OBJECT_ID_TRAVIS:

		case ENCODER_OBJECT_ID_NUTMEG:

			return radeon_encoder->encoder_id;

		default:

			return ENCODER_OBJECT_ID_NONE;

		}

	}

	return ENCODER_OBJECT_ID_NONE;

}

void radeon_panel_mode_fixup(struct drm_encoder *encoder,

			     struct drm_display_mode *adjusted_mode)

{

	struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);

	struct drm_device *dev = encoder->dev;

	struct radeon_device *rdev = dev->dev_private;

	struct drm_display_mode *native_mode = &radeon_encoder->native_mode;

	unsigned hblank = native_mode->htotal - native_mode->hdisplay;

	unsigned vblank = native_mode->vtotal - native_mode->vdisplay;

	unsigned hover = native_mode->hsync_start - native_mode->hdisplay;

	unsigned vover = native_mode->vsync_start - native_mode->vdisplay;

	unsigned hsync_width = native_mode->hsync_end - native_mode->hsync_start;

	unsigned vsync_width = native_mode->vsync_end - native_mode->vsync_start;

	adjusted_mode->clock = native_mode->clock;

	adjusted_mode->flags = native_mode->flags;

	if (ASIC_IS_AVIVO(rdev)) {

		adjusted_mode->hdisplay = native_mode->hdisplay;

		adjusted_mode->vdisplay = native_mode->vdisplay;

	}

	adjusted_mode->htotal = native_mode->hdisplay + hblank;

	adjusted_mode->hsync_start = native_mode->hdisplay + hover;

	adjusted_mode->hsync_end = adjusted_mode->hsync_start + hsync_width;

	adjusted_mode->vtotal = native_mode->vdisplay + vblank;

	adjusted_mode->vsync_start = native_mode->vdisplay + vover;

	adjusted_mode->vsync_end = adjusted_mode->vsync_start + vsync_width;

	drm_mode_set_crtcinfo(adjusted_mode, CRTC_INTERLACE_HALVE_V);

	if (ASIC_IS_AVIVO(rdev)) {

		adjusted_mode->crtc_hdisplay = native_mode->hdisplay;

		adjusted_mode->crtc_vdisplay = native_mode->vdisplay;

	}

	adjusted_mode->crtc_htotal = adjusted_mode->crtc_hdisplay + hblank;

	adjusted_mode->crtc_hsync_start = adjusted_mode->crtc_hdisplay + hover;

	adjusted_mode->crtc_hsync_end = adjusted_mode->crtc_hsync_start + hsync_width;

	adjusted_mode->crtc_vtotal = adjusted_mode->crtc_vdisplay + vblank;

	adjusted_mode->crtc_vsync_start = adjusted_mode->crtc_vdisplay + vover;

	adjusted_mode->crtc_vsync_end = adjusted_mode->crtc_vsync_start + vsync_width;

}

bool radeon_dig_monitor_is_duallink(struct drm_encoder *encoder,

				    u32 pixel_clock)

{

	struct drm_device *dev = encoder->dev;

	struct radeon_device *rdev = dev->dev_private;

	struct drm_connector *connector;

	struct radeon_connector *radeon_connector;

	struct radeon_connector_atom_dig *dig_connector;

	connector = radeon_get_connector_for_encoder(encoder);

	/* if we don't have an active device yet, just use one of

	 * the connectors tied to the encoder.

	 */

	if (!connector)

		connector = radeon_get_connector_for_encoder_init(encoder);

	radeon_connector = to_radeon_connector(connector);

	switch (connector->connector_type) {

	case DRM_MODE_CONNECTOR_DVII:

	case DRM_MODE_CONNECTOR_HDMIB:

		if (radeon_connector->use_digital) {

			/* HDMI 1.3 supports up to 340 Mhz over single link */

			if (ASIC_IS_DCE6(rdev) && drm_detect_hdmi_monitor(radeon_connector_edid(connector))) {

				if (pixel_clock > 340000)

					return true;

				else

					return false;

			} else {

				if (pixel_clock > 165000)

					return true;

				else

					return false;

			}

		} else

			return false;

	case DRM_MODE_CONNECTOR_DVID:

	case DRM_MODE_CONNECTOR_HDMIA:

	case DRM_MODE_CONNECTOR_DisplayPort:

		if (radeon_connector->is_mst_connector)

			return false;

		dig_connector = radeon_connector->con_priv;

		if ((dig_connector->dp_sink_type == CONNECTOR_OBJECT_ID_DISPLAYPORT) ||

		    (dig_connector->dp_sink_type == CONNECTOR_OBJECT_ID_eDP))

			return false;

		else {

			/* HDMI 1.3 supports up to 340 Mhz over single link */

			if (ASIC_IS_DCE6(rdev) && drm_detect_hdmi_monitor(radeon_connector_edid(connector))) {

				if (pixel_clock > 340000)

					return true;

				else

					return false;

			} else {

				if (pixel_clock > 165000)

					return true;

				else

					return false;

			}

		}

	default:

		return false;

	}

}

bool radeon_encoder_is_digital(struct drm_encoder *encoder)

{

	struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);

	switch (radeon_encoder->encoder_id) {

	case ENCODER_OBJECT_ID_INTERNAL_LVDS:

	case ENCODER_OBJECT_ID_INTERNAL_TMDS1:

	case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_TMDS1:

	case ENCODER_OBJECT_ID_INTERNAL_LVTM1:

	case ENCODER_OBJECT_ID_INTERNAL_DVO1:

	case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_DVO1:

	case ENCODER_OBJECT_ID_INTERNAL_DDI:

	case ENCODER_OBJECT_ID_INTERNAL_UNIPHY:

	case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_LVTMA:

	case ENCODER_OBJECT_ID_INTERNAL_UNIPHY1:

	case ENCODER_OBJECT_ID_INTERNAL_UNIPHY2:

	case ENCODER_OBJECT_ID_INTERNAL_UNIPHY3:

		return true;

	default:

		return false;

	}

}