radeon_encoders.c

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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 <drm/drmP.h>
#include <drm/drm_crtc_helper.h>
#include <drm/radeon_drm.h>
#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;
}

void
radeon_link_encoder_connector(struct drm_device *dev)
{
    struct radeon_device *rdev = dev->dev_private;
    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)) {
                    if (rdev->is_atom_bios)
                        radeon_atom_backlight_init(radeon_encoder, connector);
                    else
                        radeon_legacy_backlight_init(radeon_encoder, connector);
                    rdev->mode_info.bl_encoder = radeon_encoder;
                }
            }
        }
    }
}

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->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)) {
                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:
        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)) {
                if (pixel_clock > 340000)
                    return true;
                else
                    return false;
            } else {
                if (pixel_clock > 165000)
                    return true;
                else
                    return false;
            }
        }
    default:
        return false;
    }
}