/*
 * Copyright 2014 Advanced Micro Devices, 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.
 *
 */
#include "drmP.h"
#include "amdgpu.h"
#include "amdgpu_pm.h"
#include "amdgpu_i2c.h"
#include "vid.h"
#include "atom.h"
#include "amdgpu_atombios.h"
#include "atombios_crtc.h"
#include "atombios_encoders.h"
#include "amdgpu_pll.h"
#include "amdgpu_connectors.h"

#include "dce/dce_10_0_d.h"
#include "dce/dce_10_0_sh_mask.h"
#include "dce/dce_10_0_enum.h"
#include "oss/oss_3_0_d.h"
#include "oss/oss_3_0_sh_mask.h"
#include "gmc/gmc_8_1_d.h"
#include "gmc/gmc_8_1_sh_mask.h"

static void dce_v10_0_set_display_funcs(struct amdgpu_device *adev);
static void dce_v10_0_set_irq_funcs(struct amdgpu_device *adev);

static const u32 crtc_offsets[] =
{
        CRTC0_REGISTER_OFFSET,
        CRTC1_REGISTER_OFFSET,
        CRTC2_REGISTER_OFFSET,
        CRTC3_REGISTER_OFFSET,
        CRTC4_REGISTER_OFFSET,
        CRTC5_REGISTER_OFFSET,
        CRTC6_REGISTER_OFFSET
};

static const u32 hpd_offsets[] =
{
        HPD0_REGISTER_OFFSET,
        HPD1_REGISTER_OFFSET,
        HPD2_REGISTER_OFFSET,
        HPD3_REGISTER_OFFSET,
        HPD4_REGISTER_OFFSET,
        HPD5_REGISTER_OFFSET
};

static const uint32_t dig_offsets[] = {
        DIG0_REGISTER_OFFSET,
        DIG1_REGISTER_OFFSET,
        DIG2_REGISTER_OFFSET,
        DIG3_REGISTER_OFFSET,
        DIG4_REGISTER_OFFSET,
        DIG5_REGISTER_OFFSET,
        DIG6_REGISTER_OFFSET
};

static const struct {
        uint32_t        reg;
        uint32_t        vblank;
        uint32_t        vline;
        uint32_t        hpd;

} interrupt_status_offsets[] = { {
        .reg = mmDISP_INTERRUPT_STATUS,
        .vblank = DISP_INTERRUPT_STATUS__LB_D1_VBLANK_INTERRUPT_MASK,
        .vline = DISP_INTERRUPT_STATUS__LB_D1_VLINE_INTERRUPT_MASK,
        .hpd = DISP_INTERRUPT_STATUS__DC_HPD1_INTERRUPT_MASK
}, {
        .reg = mmDISP_INTERRUPT_STATUS_CONTINUE,
        .vblank = DISP_INTERRUPT_STATUS_CONTINUE__LB_D2_VBLANK_INTERRUPT_MASK,
        .vline = DISP_INTERRUPT_STATUS_CONTINUE__LB_D2_VLINE_INTERRUPT_MASK,
        .hpd = DISP_INTERRUPT_STATUS_CONTINUE__DC_HPD2_INTERRUPT_MASK
}, {
        .reg = mmDISP_INTERRUPT_STATUS_CONTINUE2,
        .vblank = DISP_INTERRUPT_STATUS_CONTINUE2__LB_D3_VBLANK_INTERRUPT_MASK,
        .vline = DISP_INTERRUPT_STATUS_CONTINUE2__LB_D3_VLINE_INTERRUPT_MASK,
        .hpd = DISP_INTERRUPT_STATUS_CONTINUE2__DC_HPD3_INTERRUPT_MASK
}, {
        .reg = mmDISP_INTERRUPT_STATUS_CONTINUE3,
        .vblank = DISP_INTERRUPT_STATUS_CONTINUE3__LB_D4_VBLANK_INTERRUPT_MASK,
        .vline = DISP_INTERRUPT_STATUS_CONTINUE3__LB_D4_VLINE_INTERRUPT_MASK,
        .hpd = DISP_INTERRUPT_STATUS_CONTINUE3__DC_HPD4_INTERRUPT_MASK
}, {
        .reg = mmDISP_INTERRUPT_STATUS_CONTINUE4,
        .vblank = DISP_INTERRUPT_STATUS_CONTINUE4__LB_D5_VBLANK_INTERRUPT_MASK,
        .vline = DISP_INTERRUPT_STATUS_CONTINUE4__LB_D5_VLINE_INTERRUPT_MASK,
        .hpd = DISP_INTERRUPT_STATUS_CONTINUE4__DC_HPD5_INTERRUPT_MASK
}, {
        .reg = mmDISP_INTERRUPT_STATUS_CONTINUE5,
        .vblank = DISP_INTERRUPT_STATUS_CONTINUE5__LB_D6_VBLANK_INTERRUPT_MASK,
        .vline = DISP_INTERRUPT_STATUS_CONTINUE5__LB_D6_VLINE_INTERRUPT_MASK,
        .hpd = DISP_INTERRUPT_STATUS_CONTINUE5__DC_HPD6_INTERRUPT_MASK
} };

static const u32 golden_settings_tonga_a11[] =
{
        mmDCI_CLK_CNTL, 0x00000080, 0x00000000,
        mmFBC_DEBUG_COMP, 0x000000f0, 0x00000070,
        mmFBC_MISC, 0x1f311fff, 0x12300000,
        mmHDMI_CONTROL, 0x31000111, 0x00000011,
};

static const u32 tonga_mgcg_cgcg_init[] =
{
        mmXDMA_CLOCK_GATING_CNTL, 0xffffffff, 0x00000100,
        mmXDMA_MEM_POWER_CNTL, 0x00000101, 0x00000000,
};

static void dce_v10_0_init_golden_registers(struct amdgpu_device *adev)
{
        switch (adev->asic_type) {
        case CHIP_TONGA:
                amdgpu_program_register_sequence(adev,
                                                 tonga_mgcg_cgcg_init,
                                                 (const u32)ARRAY_SIZE(tonga_mgcg_cgcg_init));
                amdgpu_program_register_sequence(adev,
                                                 golden_settings_tonga_a11,
                                                 (const u32)ARRAY_SIZE(golden_settings_tonga_a11));
                break;
        default:
                break;
        }
}

static u32 dce_v10_0_audio_endpt_rreg(struct amdgpu_device *adev,
                                     u32 block_offset, u32 reg)
{
        unsigned long flags;
        u32 r;

        spin_lock_irqsave(&adev->audio_endpt_idx_lock, flags);
        WREG32(mmAZALIA_F0_CODEC_ENDPOINT_INDEX + block_offset, reg);
        r = RREG32(mmAZALIA_F0_CODEC_ENDPOINT_DATA + block_offset);
        spin_unlock_irqrestore(&adev->audio_endpt_idx_lock, flags);

        return r;
}

static void dce_v10_0_audio_endpt_wreg(struct amdgpu_device *adev,
                                      u32 block_offset, u32 reg, u32 v)
{
        unsigned long flags;

        spin_lock_irqsave(&adev->audio_endpt_idx_lock, flags);
        WREG32(mmAZALIA_F0_CODEC_ENDPOINT_INDEX + block_offset, reg);
        WREG32(mmAZALIA_F0_CODEC_ENDPOINT_DATA + block_offset, v);
        spin_unlock_irqrestore(&adev->audio_endpt_idx_lock, flags);
}

static bool dce_v10_0_is_in_vblank(struct amdgpu_device *adev, int crtc)
{
        if (RREG32(mmCRTC_STATUS + crtc_offsets[crtc]) &
                        CRTC_V_BLANK_START_END__CRTC_V_BLANK_START_MASK)
                return true;
        else
                return false;
}

static bool dce_v10_0_is_counter_moving(struct amdgpu_device *adev, int crtc)
{
        u32 pos1, pos2;

        pos1 = RREG32(mmCRTC_STATUS_POSITION + crtc_offsets[crtc]);
        pos2 = RREG32(mmCRTC_STATUS_POSITION + crtc_offsets[crtc]);

        if (pos1 != pos2)
                return true;
        else
                return false;
}

/**
 * dce_v10_0_vblank_wait - vblank wait asic callback.
 *
 * @adev: amdgpu_device pointer
 * @crtc: crtc to wait for vblank on
 *
 * Wait for vblank on the requested crtc (evergreen+).
 */
static void dce_v10_0_vblank_wait(struct amdgpu_device *adev, int crtc)
{
        unsigned i = 0;

        if (crtc >= adev->mode_info.num_crtc)
                return;

        if (!(RREG32(mmCRTC_CONTROL + crtc_offsets[crtc]) & CRTC_CONTROL__CRTC_MASTER_EN_MASK))
                return;

        /* depending on when we hit vblank, we may be close to active; if so,
         * wait for another frame.
         */
        while (dce_v10_0_is_in_vblank(adev, crtc)) {
                if (i++ % 100 == 0) {
                        if (!dce_v10_0_is_counter_moving(adev, crtc))
                                break;
                }
        }

        while (!dce_v10_0_is_in_vblank(adev, crtc)) {
                if (i++ % 100 == 0) {
                        if (!dce_v10_0_is_counter_moving(adev, crtc))
                                break;
                }
        }
}

static u32 dce_v10_0_vblank_get_counter(struct amdgpu_device *adev, int crtc)
{
        if (crtc >= adev->mode_info.num_crtc)
                return 0;
        else
                return RREG32(mmCRTC_STATUS_FRAME_COUNT + crtc_offsets[crtc]);
}

/**
 * dce_v10_0_page_flip - pageflip callback.
 *
 * @adev: amdgpu_device pointer
 * @crtc_id: crtc to cleanup pageflip on
 * @crtc_base: new address of the crtc (GPU MC address)
 *
 * Does the actual pageflip (evergreen+).
 * During vblank we take the crtc lock and wait for the update_pending
 * bit to go high, when it does, we release the lock, and allow the
 * double buffered update to take place.
 * Returns the current update pending status.
 */
static void dce_v10_0_page_flip(struct amdgpu_device *adev,
                              int crtc_id, u64 crtc_base)
{
        struct amdgpu_crtc *amdgpu_crtc = adev->mode_info.crtcs[crtc_id];
        u32 tmp = RREG32(mmGRPH_UPDATE + amdgpu_crtc->crtc_offset);
        int i;

        /* Lock the graphics update lock */
        tmp = REG_SET_FIELD(tmp, GRPH_UPDATE, GRPH_UPDATE_LOCK, 1);
        WREG32(mmGRPH_UPDATE + amdgpu_crtc->crtc_offset, tmp);

        /* update the scanout addresses */
        WREG32(mmGRPH_SECONDARY_SURFACE_ADDRESS_HIGH + amdgpu_crtc->crtc_offset,
               upper_32_bits(crtc_base));
        WREG32(mmGRPH_SECONDARY_SURFACE_ADDRESS + amdgpu_crtc->crtc_offset,
               lower_32_bits(crtc_base));

        WREG32(mmGRPH_PRIMARY_SURFACE_ADDRESS_HIGH + amdgpu_crtc->crtc_offset,
               upper_32_bits(crtc_base));
        WREG32(mmGRPH_PRIMARY_SURFACE_ADDRESS + amdgpu_crtc->crtc_offset,
               lower_32_bits(crtc_base));

        /* Wait for update_pending to go high. */
        for (i = 0; i < adev->usec_timeout; i++) {
                if (RREG32(mmGRPH_UPDATE + amdgpu_crtc->crtc_offset) &
                                GRPH_UPDATE__GRPH_SURFACE_UPDATE_PENDING_MASK)
                        break;
                udelay(1);
        }
        DRM_DEBUG("Update pending now high. Unlocking vupdate_lock.\n");

        /* Unlock the lock, so double-buffering can take place inside vblank */
        tmp = REG_SET_FIELD(tmp, GRPH_UPDATE, GRPH_UPDATE_LOCK, 0);
        WREG32(mmGRPH_UPDATE + amdgpu_crtc->crtc_offset, tmp);
}

static int dce_v10_0_crtc_get_scanoutpos(struct amdgpu_device *adev, int crtc,
                                        u32 *vbl, u32 *position)
{
        if ((crtc < 0) || (crtc >= adev->mode_info.num_crtc))
                return -EINVAL;

        *vbl = RREG32(mmCRTC_V_BLANK_START_END + crtc_offsets[crtc]);
        *position = RREG32(mmCRTC_STATUS_POSITION + crtc_offsets[crtc]);

        return 0;
}

/**
 * dce_v10_0_hpd_sense - hpd sense callback.
 *
 * @adev: amdgpu_device pointer
 * @hpd: hpd (hotplug detect) pin
 *
 * Checks if a digital monitor is connected (evergreen+).
 * Returns true if connected, false if not connected.
 */
static bool dce_v10_0_hpd_sense(struct amdgpu_device *adev,
                               enum amdgpu_hpd_id hpd)
{
        int idx;
        bool connected = false;

        switch (hpd) {
        case AMDGPU_HPD_1:
                idx = 0;
                break;
        case AMDGPU_HPD_2:
                idx = 1;
                break;
        case AMDGPU_HPD_3:
                idx = 2;
                break;
        case AMDGPU_HPD_4:
                idx = 3;
                break;
        case AMDGPU_HPD_5:
                idx = 4;
                break;
        case AMDGPU_HPD_6:
                idx = 5;
                break;
        default:
                return connected;
        }

        if (RREG32(mmDC_HPD_INT_STATUS + hpd_offsets[idx]) &
            DC_HPD_INT_STATUS__DC_HPD_SENSE_MASK)
                connected = true;

        return connected;
}

/**
 * dce_v10_0_hpd_set_polarity - hpd set polarity callback.
 *
 * @adev: amdgpu_device pointer
 * @hpd: hpd (hotplug detect) pin
 *
 * Set the polarity of the hpd pin (evergreen+).
 */
static void dce_v10_0_hpd_set_polarity(struct amdgpu_device *adev,
                                      enum amdgpu_hpd_id hpd)
{
        u32 tmp;
        bool connected = dce_v10_0_hpd_sense(adev, hpd);
        int idx;

        switch (hpd) {
        case AMDGPU_HPD_1:
                idx = 0;
                break;
        case AMDGPU_HPD_2:
                idx = 1;
                break;
        case AMDGPU_HPD_3:
                idx = 2;
                break;
        case AMDGPU_HPD_4:
                idx = 3;
                break;
        case AMDGPU_HPD_5:
                idx = 4;
                break;
        case AMDGPU_HPD_6:
                idx = 5;
                break;
        default:
                return;
        }

        tmp = RREG32(mmDC_HPD_INT_CONTROL + hpd_offsets[idx]);
        if (connected)
                tmp = REG_SET_FIELD(tmp, DC_HPD_INT_CONTROL, DC_HPD_INT_POLARITY, 0);
        else
                tmp = REG_SET_FIELD(tmp, DC_HPD_INT_CONTROL, DC_HPD_INT_POLARITY, 1);
        WREG32(mmDC_HPD_INT_CONTROL + hpd_offsets[idx], tmp);
}

/**
 * dce_v10_0_hpd_init - hpd setup callback.
 *
 * @adev: amdgpu_device pointer
 *
 * Setup the hpd pins used by the card (evergreen+).
 * Enable the pin, set the polarity, and enable the hpd interrupts.
 */
static void dce_v10_0_hpd_init(struct amdgpu_device *adev)
{
        struct drm_device *dev = adev->ddev;
        struct drm_connector *connector;
        u32 tmp;
        int idx;

        list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
                struct amdgpu_connector *amdgpu_connector = to_amdgpu_connector(connector);

                if (connector->connector_type == DRM_MODE_CONNECTOR_eDP ||
                    connector->connector_type == DRM_MODE_CONNECTOR_LVDS) {
                        /* don't try to enable hpd on eDP or LVDS avoid breaking the
                         * aux dp channel on imac and help (but not completely fix)
                         * https://bugzilla.redhat.com/show_bug.cgi?id=726143
                         * also avoid interrupt storms during dpms.
                         */
                        continue;
                }

                switch (amdgpu_connector->hpd.hpd) {
                case AMDGPU_HPD_1:
                        idx = 0;
                        break;
                case AMDGPU_HPD_2:
                        idx = 1;
                        break;
                case AMDGPU_HPD_3:
                        idx = 2;
                        break;
                case AMDGPU_HPD_4:
                        idx = 3;
                        break;
                case AMDGPU_HPD_5:
                        idx = 4;
                        break;
                case AMDGPU_HPD_6:
                        idx = 5;
                        break;
                default:
                        continue;
                }

                tmp = RREG32(mmDC_HPD_CONTROL + hpd_offsets[idx]);
                tmp = REG_SET_FIELD(tmp, DC_HPD_CONTROL, DC_HPD_EN, 1);
                WREG32(mmDC_HPD_CONTROL + hpd_offsets[idx], tmp);

                tmp = RREG32(mmDC_HPD_TOGGLE_FILT_CNTL + hpd_offsets[idx]);
                tmp = REG_SET_FIELD(tmp, DC_HPD_TOGGLE_FILT_CNTL,
                                    DC_HPD_CONNECT_INT_DELAY,
                                    AMDGPU_HPD_CONNECT_INT_DELAY_IN_MS);
                tmp = REG_SET_FIELD(tmp, DC_HPD_TOGGLE_FILT_CNTL,
                                    DC_HPD_DISCONNECT_INT_DELAY,
                                    AMDGPU_HPD_DISCONNECT_INT_DELAY_IN_MS);
                WREG32(mmDC_HPD_TOGGLE_FILT_CNTL + hpd_offsets[idx], tmp);

                dce_v10_0_hpd_set_polarity(adev, amdgpu_connector->hpd.hpd);
                amdgpu_irq_get(adev, &adev->hpd_irq,
                               amdgpu_connector->hpd.hpd);
        }
}

/**
 * dce_v10_0_hpd_fini - hpd tear down callback.
 *
 * @adev: amdgpu_device pointer
 *
 * Tear down the hpd pins used by the card (evergreen+).
 * Disable the hpd interrupts.
 */
static void dce_v10_0_hpd_fini(struct amdgpu_device *adev)
{
        struct drm_device *dev = adev->ddev;
        struct drm_connector *connector;
        u32 tmp;
        int idx;

        list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
                struct amdgpu_connector *amdgpu_connector = to_amdgpu_connector(connector);

                switch (amdgpu_connector->hpd.hpd) {
                case AMDGPU_HPD_1:
                        idx = 0;
                        break;
                case AMDGPU_HPD_2:
                        idx = 1;
                        break;
                case AMDGPU_HPD_3:
                        idx = 2;
                        break;
                case AMDGPU_HPD_4:
                        idx = 3;
                        break;
                case AMDGPU_HPD_5:
                        idx = 4;
                        break;
                case AMDGPU_HPD_6:
                        idx = 5;
                        break;
                default:
                        continue;
                }

                tmp = RREG32(mmDC_HPD_CONTROL + hpd_offsets[idx]);
                tmp = REG_SET_FIELD(tmp, DC_HPD_CONTROL, DC_HPD_EN, 0);
                WREG32(mmDC_HPD_CONTROL + hpd_offsets[idx], tmp);

                amdgpu_irq_put(adev, &adev->hpd_irq,
                               amdgpu_connector->hpd.hpd);
        }
}

static u32 dce_v10_0_hpd_get_gpio_reg(struct amdgpu_device *adev)
{
        return mmDC_GPIO_HPD_A;
}

static bool dce_v10_0_is_display_hung(struct amdgpu_device *adev)
{
        u32 crtc_hung = 0;
        u32 crtc_status[6];
        u32 i, j, tmp;

        for (i = 0; i < adev->mode_info.num_crtc; i++) {
                tmp = RREG32(mmCRTC_CONTROL + crtc_offsets[i]);
                if (REG_GET_FIELD(tmp, CRTC_CONTROL, CRTC_MASTER_EN)) {
                        crtc_status[i] = RREG32(mmCRTC_STATUS_HV_COUNT + crtc_offsets[i]);
                        crtc_hung |= (1 << i);
                }
        }

        for (j = 0; j < 10; j++) {
                for (i = 0; i < adev->mode_info.num_crtc; i++) {
                        if (crtc_hung & (1 << i)) {
                                tmp = RREG32(mmCRTC_STATUS_HV_COUNT + crtc_offsets[i]);
                                if (tmp != crtc_status[i])
                                        crtc_hung &= ~(1 << i);
                        }
                }
                if (crtc_hung == 0)
                        return false;
                udelay(100);
        }

        return true;
}

static void dce_v10_0_stop_mc_access(struct amdgpu_device *adev,
                                     struct amdgpu_mode_mc_save *save)
{
        u32 crtc_enabled, tmp;
        int i;

        save->vga_render_control = RREG32(mmVGA_RENDER_CONTROL);
        save->vga_hdp_control = RREG32(mmVGA_HDP_CONTROL);

        /* disable VGA render */
        tmp = RREG32(mmVGA_RENDER_CONTROL);
        tmp = REG_SET_FIELD(tmp, VGA_RENDER_CONTROL, VGA_VSTATUS_CNTL, 0);
        WREG32(mmVGA_RENDER_CONTROL, tmp);

        /* blank the display controllers */
        for (i = 0; i < adev->mode_info.num_crtc; i++) {
                crtc_enabled = REG_GET_FIELD(RREG32(mmCRTC_CONTROL + crtc_offsets[i]),
                                             CRTC_CONTROL, CRTC_MASTER_EN);
                if (crtc_enabled) {
#if 0
                        u32 frame_count;
                        int j;

                        save->crtc_enabled[i] = true;
                        tmp = RREG32(mmCRTC_BLANK_CONTROL + crtc_offsets[i]);
                        if (REG_GET_FIELD(tmp, CRTC_BLANK_CONTROL, CRTC_BLANK_DATA_EN) == 0) {
                                amdgpu_display_vblank_wait(adev, i);
                                WREG32(mmCRTC_UPDATE_LOCK + crtc_offsets[i], 1);
                                tmp = REG_SET_FIELD(tmp, CRTC_BLANK_CONTROL, CRTC_BLANK_DATA_EN, 1);
                                WREG32(mmCRTC_BLANK_CONTROL + crtc_offsets[i], tmp);
                                WREG32(mmCRTC_UPDATE_LOCK + crtc_offsets[i], 0);
                        }
                        /* wait for the next frame */
                        frame_count = amdgpu_display_vblank_get_counter(adev, i);
                        for (j = 0; j < adev->usec_timeout; j++) {
                                if (amdgpu_display_vblank_get_counter(adev, i) != frame_count)
                                        break;
                                udelay(1);
                        }
                        tmp = RREG32(mmGRPH_UPDATE + crtc_offsets[i]);
                        if (REG_GET_FIELD(tmp, GRPH_UPDATE, GRPH_UPDATE_LOCK) == 0) {
                                tmp = REG_SET_FIELD(tmp, GRPH_UPDATE, GRPH_UPDATE_LOCK, 1);
                                WREG32(mmGRPH_UPDATE + crtc_offsets[i], tmp);
                        }
                        tmp = RREG32(mmMASTER_UPDATE_LOCK + crtc_offsets[i]);
                        if (REG_GET_FIELD(tmp, MASTER_UPDATE_LOCK, MASTER_UPDATE_LOCK) == 0) {
                                tmp = REG_SET_FIELD(tmp, MASTER_UPDATE_LOCK, MASTER_UPDATE_LOCK, 1);
                                WREG32(mmMASTER_UPDATE_LOCK + crtc_offsets[i], tmp);
                        }
#else
                        /* XXX this is a hack to avoid strange behavior with EFI on certain systems */
                        WREG32(mmCRTC_UPDATE_LOCK + crtc_offsets[i], 1);
                        tmp = RREG32(mmCRTC_CONTROL + crtc_offsets[i]);
                        tmp = REG_SET_FIELD(tmp, CRTC_CONTROL, CRTC_MASTER_EN, 0);
                        WREG32(mmCRTC_CONTROL + crtc_offsets[i], tmp);
                        WREG32(mmCRTC_UPDATE_LOCK + crtc_offsets[i], 0);
                        save->crtc_enabled[i] = false;
                        /* ***** */
#endif
                } else {
                        save->crtc_enabled[i] = false;
                }
        }
}

static void dce_v10_0_resume_mc_access(struct amdgpu_device *adev,
                                       struct amdgpu_mode_mc_save *save)
{
        u32 tmp, frame_count;
        int i, j;

        /* update crtc base addresses */
        for (i = 0; i < adev->mode_info.num_crtc; i++) {
                WREG32(mmGRPH_PRIMARY_SURFACE_ADDRESS_HIGH + crtc_offsets[i],
                       upper_32_bits(adev->mc.vram_start));
                WREG32(mmGRPH_SECONDARY_SURFACE_ADDRESS_HIGH + crtc_offsets[i],
                       upper_32_bits(adev->mc.vram_start));
                WREG32(mmGRPH_PRIMARY_SURFACE_ADDRESS + crtc_offsets[i],
                       (u32)adev->mc.vram_start);
                WREG32(mmGRPH_SECONDARY_SURFACE_ADDRESS + crtc_offsets[i],
                       (u32)adev->mc.vram_start);

                if (save->crtc_enabled[i]) {
                        tmp = RREG32(mmMASTER_UPDATE_MODE + crtc_offsets[i]);
                        if (REG_GET_FIELD(tmp, MASTER_UPDATE_MODE, MASTER_UPDATE_MODE) != 3) {
                                tmp = REG_SET_FIELD(tmp, MASTER_UPDATE_MODE, MASTER_UPDATE_MODE, 3);
                                WREG32(mmMASTER_UPDATE_MODE + crtc_offsets[i], tmp);
                        }
                        tmp = RREG32(mmGRPH_UPDATE + crtc_offsets[i]);
                        if (REG_GET_FIELD(tmp, GRPH_UPDATE, GRPH_UPDATE_LOCK)) {
                                tmp = REG_SET_FIELD(tmp, GRPH_UPDATE, GRPH_UPDATE_LOCK, 0);
                                WREG32(mmGRPH_UPDATE + crtc_offsets[i], tmp);
                        }
                        tmp = RREG32(mmMASTER_UPDATE_LOCK + crtc_offsets[i]);
                        if (REG_GET_FIELD(tmp, MASTER_UPDATE_LOCK, MASTER_UPDATE_LOCK)) {
                                tmp = REG_SET_FIELD(tmp, MASTER_UPDATE_LOCK, MASTER_UPDATE_LOCK, 0);
                                WREG32(mmMASTER_UPDATE_LOCK + crtc_offsets[i], tmp);
                        }
                        for (j = 0; j < adev->usec_timeout; j++) {
                                tmp = RREG32(mmGRPH_UPDATE + crtc_offsets[i]);
                                if (REG_GET_FIELD(tmp, GRPH_UPDATE, GRPH_SURFACE_UPDATE_PENDING) == 0)
                                        break;
                                udelay(1);
                        }
                        tmp = RREG32(mmCRTC_BLANK_CONTROL + crtc_offsets[i]);
                        tmp = REG_SET_FIELD(tmp, CRTC_BLANK_CONTROL, CRTC_BLANK_DATA_EN, 0);
                        WREG32(mmCRTC_UPDATE_LOCK + crtc_offsets[i], 1);
                        WREG32(mmCRTC_BLANK_CONTROL + crtc_offsets[i], tmp);
                        WREG32(mmCRTC_UPDATE_LOCK + crtc_offsets[i], 0);
                        /* wait for the next frame */
                        frame_count = amdgpu_display_vblank_get_counter(adev, i);
                        for (j = 0; j < adev->usec_timeout; j++) {
                                if (amdgpu_display_vblank_get_counter(adev, i) != frame_count)
                                        break;
                                udelay(1);
                        }
                }
        }

        WREG32(mmVGA_MEMORY_BASE_ADDRESS_HIGH, upper_32_bits(adev->mc.vram_start));
        WREG32(mmVGA_MEMORY_BASE_ADDRESS, lower_32_bits(adev->mc.vram_start));

        /* Unlock vga access */
        WREG32(mmVGA_HDP_CONTROL, save->vga_hdp_control);
        mdelay(1);
        WREG32(mmVGA_RENDER_CONTROL, save->vga_render_control);
}

static void dce_v10_0_set_vga_render_state(struct amdgpu_device *adev,
                                           bool render)
{
        u32 tmp;

        /* Lockout access through VGA aperture*/
        tmp = RREG32(mmVGA_HDP_CONTROL);
        if (render)
                tmp = REG_SET_FIELD(tmp, VGA_HDP_CONTROL, VGA_MEMORY_DISABLE, 0);
        else
                tmp = REG_SET_FIELD(tmp, VGA_HDP_CONTROL, VGA_MEMORY_DISABLE, 1);
        WREG32(mmVGA_HDP_CONTROL, tmp);

        /* disable VGA render */
        tmp = RREG32(mmVGA_RENDER_CONTROL);
        if (render)
                tmp = REG_SET_FIELD(tmp, VGA_RENDER_CONTROL, VGA_VSTATUS_CNTL, 1);
        else
                tmp = REG_SET_FIELD(tmp, VGA_RENDER_CONTROL, VGA_VSTATUS_CNTL, 0);
        WREG32(mmVGA_RENDER_CONTROL, tmp);
}

static void dce_v10_0_program_fmt(struct drm_encoder *encoder)
{
        struct drm_device *dev = encoder->dev;
        struct amdgpu_device *adev = dev->dev_private;
        struct amdgpu_encoder *amdgpu_encoder = to_amdgpu_encoder(encoder);
        struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(encoder->crtc);
        struct drm_connector *connector = amdgpu_get_connector_for_encoder(encoder);
        int bpc = 0;
        u32 tmp = 0;
        enum amdgpu_connector_dither dither = AMDGPU_FMT_DITHER_DISABLE;

        if (connector) {
                struct amdgpu_connector *amdgpu_connector = to_amdgpu_connector(connector);
                bpc = amdgpu_connector_get_monitor_bpc(connector);
                dither = amdgpu_connector->dither;
        }

        /* LVDS/eDP FMT is set up by atom */
        if (amdgpu_encoder->devices & ATOM_DEVICE_LCD_SUPPORT)
                return;

        /* not needed for analog */
        if ((amdgpu_encoder->encoder_id == ENCODER_OBJECT_ID_INTERNAL_KLDSCP_DAC1) ||
            (amdgpu_encoder->encoder_id == ENCODER_OBJECT_ID_INTERNAL_KLDSCP_DAC2))
                return;

        if (bpc == 0)
                return;

        switch (bpc) {
        case 6:
                if (dither == AMDGPU_FMT_DITHER_ENABLE) {
                        /* XXX sort out optimal dither settings */
                        tmp = REG_SET_FIELD(tmp, FMT_BIT_DEPTH_CONTROL, FMT_FRAME_RANDOM_ENABLE, 1);
                        tmp = REG_SET_FIELD(tmp, FMT_BIT_DEPTH_CONTROL, FMT_HIGHPASS_RANDOM_ENABLE, 1);
                        tmp = REG_SET_FIELD(tmp, FMT_BIT_DEPTH_CONTROL, FMT_SPATIAL_DITHER_EN, 1);
                        tmp = REG_SET_FIELD(tmp, FMT_BIT_DEPTH_CONTROL, FMT_SPATIAL_DITHER_DEPTH, 0);
                } else {
                        tmp = REG_SET_FIELD(tmp, FMT_BIT_DEPTH_CONTROL, FMT_TRUNCATE_EN, 1);
                        tmp = REG_SET_FIELD(tmp, FMT_BIT_DEPTH_CONTROL, FMT_TRUNCATE_DEPTH, 0);
                }
                break;
        case 8:
                if (dither == AMDGPU_FMT_DITHER_ENABLE) {
                        /* XXX sort out optimal dither settings */
                        tmp = REG_SET_FIELD(tmp, FMT_BIT_DEPTH_CONTROL, FMT_FRAME_RANDOM_ENABLE, 1);
                        tmp = REG_SET_FIELD(tmp, FMT_BIT_DEPTH_CONTROL, FMT_HIGHPASS_RANDOM_ENABLE, 1);
                        tmp = REG_SET_FIELD(tmp, FMT_BIT_DEPTH_CONTROL, FMT_RGB_RANDOM_ENABLE, 1);
                        tmp = REG_SET_FIELD(tmp, FMT_BIT_DEPTH_CONTROL, FMT_SPATIAL_DITHER_EN, 1);
                        tmp = REG_SET_FIELD(tmp, FMT_BIT_DEPTH_CONTROL, FMT_SPATIAL_DITHER_DEPTH, 1);
                } else {
                        tmp = REG_SET_FIELD(tmp, FMT_BIT_DEPTH_CONTROL, FMT_TRUNCATE_EN, 1);
                        tmp = REG_SET_FIELD(tmp, FMT_BIT_DEPTH_CONTROL, FMT_TRUNCATE_DEPTH, 1);
                }
                break;
        case 10:
                if (dither == AMDGPU_FMT_DITHER_ENABLE) {
                        /* XXX sort out optimal dither settings */
                        tmp = REG_SET_FIELD(tmp, FMT_BIT_DEPTH_CONTROL, FMT_FRAME_RANDOM_ENABLE, 1);
                        tmp = REG_SET_FIELD(tmp, FMT_BIT_DEPTH_CONTROL, FMT_HIGHPASS_RANDOM_ENABLE, 1);
                        tmp = REG_SET_FIELD(tmp, FMT_BIT_DEPTH_CONTROL, FMT_RGB_RANDOM_ENABLE, 1);
                        tmp = REG_SET_FIELD(tmp, FMT_BIT_DEPTH_CONTROL, FMT_SPATIAL_DITHER_EN, 1);
                        tmp = REG_SET_FIELD(tmp, FMT_BIT_DEPTH_CONTROL, FMT_SPATIAL_DITHER_DEPTH, 2);
                } else {
                        tmp = REG_SET_FIELD(tmp, FMT_BIT_DEPTH_CONTROL, FMT_TRUNCATE_EN, 1);
                        tmp = REG_SET_FIELD(tmp, FMT_BIT_DEPTH_CONTROL, FMT_TRUNCATE_DEPTH, 2);
                }
                break;
        default:
                /* not needed */
                break;
        }

        WREG32(mmFMT_BIT_DEPTH_CONTROL + amdgpu_crtc->crtc_offset, tmp);
}


/* display watermark setup */
/**
 * dce_v10_0_line_buffer_adjust - Set up the line buffer
 *
 * @adev: amdgpu_device pointer
 * @amdgpu_crtc: the selected display controller
 * @mode: the current display mode on the selected display
 * controller
 *
 * Setup up the line buffer allocation for
 * the selected display controller (CIK).
 * Returns the line buffer size in pixels.
 */
static u32 dce_v10_0_line_buffer_adjust(struct amdgpu_device *adev,
                                       struct amdgpu_crtc *amdgpu_crtc,
                                       struct drm_display_mode *mode)
{
        u32 tmp, buffer_alloc, i, mem_cfg;
        u32 pipe_offset = amdgpu_crtc->crtc_id;
        /*
         * Line Buffer Setup
         * There are 6 line buffers, one for each display controllers.
         * There are 3 partitions per LB. Select the number of partitions
         * to enable based on the display width.  For display widths larger
         * than 4096, you need use to use 2 display controllers and combine
         * them using the stereo blender.
         */
        if (amdgpu_crtc->base.enabled && mode) {
                if (mode->crtc_hdisplay < 1920) {
                        mem_cfg = 1;
                        buffer_alloc = 2;
                } else if (mode->crtc_hdisplay < 2560) {
                        mem_cfg = 2;
                        buffer_alloc = 2;
                } else if (mode->crtc_hdisplay < 4096) {
                        mem_cfg = 0;
                        buffer_alloc = (adev->flags & AMDGPU_IS_APU) ? 2 : 4;
                } else {
                        DRM_DEBUG_KMS("Mode too big for LB!\n");
                        mem_cfg = 0;
                        buffer_alloc = (adev->flags & AMDGPU_IS_APU) ? 2 : 4;
                }
        } else {
                mem_cfg = 1;
                buffer_alloc = 0;
        }

        tmp = RREG32(mmLB_MEMORY_CTRL + amdgpu_crtc->crtc_offset);
        tmp = REG_SET_FIELD(tmp, LB_MEMORY_CTRL, LB_MEMORY_CONFIG, mem_cfg);
        WREG32(mmLB_MEMORY_CTRL + amdgpu_crtc->crtc_offset, tmp);

        tmp = RREG32(mmPIPE0_DMIF_BUFFER_CONTROL + pipe_offset);
        tmp = REG_SET_FIELD(tmp, PIPE0_DMIF_BUFFER_CONTROL, DMIF_BUFFERS_ALLOCATED, buffer_alloc);
        WREG32(mmPIPE0_DMIF_BUFFER_CONTROL + pipe_offset, tmp);

        for (i = 0; i < adev->usec_timeout; i++) {
                tmp = RREG32(mmPIPE0_DMIF_BUFFER_CONTROL + pipe_offset);
                if (REG_GET_FIELD(tmp, PIPE0_DMIF_BUFFER_CONTROL, DMIF_BUFFERS_ALLOCATION_COMPLETED))
                        break;
                udelay(1);
        }

        if (amdgpu_crtc->base.enabled && mode) {
                switch (mem_cfg) {
                case 0:
                default:
                        return 4096 * 2;
                case 1:
                        return 1920 * 2;
                case 2:
                        return 2560 * 2;
                }
        }

        /* controller not enabled, so no lb used */
        return 0;
}

/**
 * cik_get_number_of_dram_channels - get the number of dram channels
 *
 * @adev: amdgpu_device pointer
 *
 * Look up the number of video ram channels (CIK).
 * Used for display watermark bandwidth calculations
 * Returns the number of dram channels
 */
static u32 cik_get_number_of_dram_channels(struct amdgpu_device *adev)
{
        u32 tmp = RREG32(mmMC_SHARED_CHMAP);

        switch (REG_GET_FIELD(tmp, MC_SHARED_CHMAP, NOOFCHAN)) {
        case 0:
        default:
                return 1;
        case 1:
                return 2;
        case 2:
                return 4;
        case 3:
                return 8;
        case 4:
                return 3;
        case 5:
                return 6;
        case 6:
                return 10;
        case 7:
                return 12;
        case 8:
                return 16;
        }
}

struct dce10_wm_params {
        u32 dram_channels; /* number of dram channels */
        u32 yclk;          /* bandwidth per dram data pin in kHz */
        u32 sclk;          /* engine clock in kHz */
        u32 disp_clk;      /* display clock in kHz */
        u32 src_width;     /* viewport width */
        u32 active_time;   /* active display time in ns */
        u32 blank_time;    /* blank time in ns */
        bool interlaced;    /* mode is interlaced */
        fixed20_12 vsc;    /* vertical scale ratio */
        u32 num_heads;     /* number of active crtcs */
        u32 bytes_per_pixel; /* bytes per pixel display + overlay */
        u32 lb_size;       /* line buffer allocated to pipe */
        u32 vtaps;         /* vertical scaler taps */
};

/**
 * dce_v10_0_dram_bandwidth - get the dram bandwidth
 *
 * @wm: watermark calculation data
 *
 * Calculate the raw dram bandwidth (CIK).
 * Used for display watermark bandwidth calculations
 * Returns the dram bandwidth in MBytes/s
 */
static u32 dce_v10_0_dram_bandwidth(struct dce10_wm_params *wm)
{
        /* Calculate raw DRAM Bandwidth */
        fixed20_12 dram_efficiency; /* 0.7 */
        fixed20_12 yclk, dram_channels, bandwidth;
        fixed20_12 a;

        a.full = dfixed_const(1000);
        yclk.full = dfixed_const(wm->yclk);
        yclk.full = dfixed_div(yclk, a);
        dram_channels.full = dfixed_const(wm->dram_channels * 4);
        a.full = dfixed_const(10);
        dram_efficiency.full = dfixed_const(7);
        dram_efficiency.full = dfixed_div(dram_efficiency, a);
        bandwidth.full = dfixed_mul(dram_channels, yclk);
        bandwidth.full = dfixed_mul(bandwidth, dram_efficiency);

        return dfixed_trunc(bandwidth);
}

/**
 * dce_v10_0_dram_bandwidth_for_display - get the dram bandwidth for display
 *
 * @wm: watermark calculation data
 *
 * Calculate the dram bandwidth used for display (CIK).
 * Used for display watermark bandwidth calculations
 * Returns the dram bandwidth for display in MBytes/s
 */
static u32 dce_v10_0_dram_bandwidth_for_display(struct dce10_wm_params *wm)
{
        /* Calculate DRAM Bandwidth and the part allocated to display. */
        fixed20_12 disp_dram_allocation; /* 0.3 to 0.7 */
        fixed20_12 yclk, dram_channels, bandwidth;
        fixed20_12 a;

        a.full = dfixed_const(1000);
        yclk.full = dfixed_const(wm->yclk);
        yclk.full = dfixed_div(yclk, a);
        dram_channels.full = dfixed_const(wm->dram_channels * 4);
        a.full = dfixed_const(10);
        disp_dram_allocation.full = dfixed_const(3); /* XXX worse case value 0.3 */
        disp_dram_allocation.full = dfixed_div(disp_dram_allocation, a);
        bandwidth.full = dfixed_mul(dram_channels, yclk);
        bandwidth.full = dfixed_mul(bandwidth, disp_dram_allocation);

        return dfixed_trunc(bandwidth);
}

/**
 * dce_v10_0_data_return_bandwidth - get the data return bandwidth
 *
 * @wm: watermark calculation data
 *
 * Calculate the data return bandwidth used for display (CIK).
 * Used for display watermark bandwidth calculations
 * Returns the data return bandwidth in MBytes/s
 */
static u32 dce_v10_0_data_return_bandwidth(struct dce10_wm_params *wm)
{
        /* Calculate the display Data return Bandwidth */
        fixed20_12 return_efficiency; /* 0.8 */
        fixed20_12 sclk, bandwidth;
        fixed20_12 a;

        a.full = dfixed_const(1000);
        sclk.full = dfixed_const(wm->sclk);
        sclk.full = dfixed_div(sclk, a);
        a.full = dfixed_const(10);
        return_efficiency.full = dfixed_const(8);
        return_efficiency.full = dfixed_div(return_efficiency, a);
        a.full = dfixed_const(32);
        bandwidth.full = dfixed_mul(a, sclk);
        bandwidth.full = dfixed_mul(bandwidth, return_efficiency);

        return dfixed_trunc(bandwidth);
}

/**
 * dce_v10_0_dmif_request_bandwidth - get the dmif bandwidth
 *
 * @wm: watermark calculation data
 *
 * Calculate the dmif bandwidth used for display (CIK).
 * Used for display watermark bandwidth calculations
 * Returns the dmif bandwidth in MBytes/s
 */
static u32 dce_v10_0_dmif_request_bandwidth(struct dce10_wm_params *wm)
{
        /* Calculate the DMIF Request Bandwidth */
        fixed20_12 disp_clk_request_efficiency; /* 0.8 */
        fixed20_12 disp_clk, bandwidth;

        fixed20_12 a, b;

        a.full = dfixed_const(1000);
        disp_clk.full = dfixed_const(wm->disp_clk);
        disp_clk.full = dfixed_div(disp_clk, a);
        a.full = dfixed_const(32);
        b.full = dfixed_mul(a, disp_clk);

        a.full = dfixed_const(10);
        disp_clk_request_efficiency.full = dfixed_const(8);
        disp_clk_request_efficiency.full = dfixed_div(disp_clk_request_efficiency, a);

        bandwidth.full = dfixed_mul(b, disp_clk_request_efficiency);

        return dfixed_trunc(bandwidth);
}

/**
 * dce_v10_0_available_bandwidth - get the min available bandwidth
 *
 * @wm: watermark calculation data
 *
 * Calculate the min available bandwidth used for display (CIK).
 * Used for display watermark bandwidth calculations
 * Returns the min available bandwidth in MBytes/s
 */
static u32 dce_v10_0_available_bandwidth(struct dce10_wm_params *wm)
{
        /* Calculate the Available bandwidth. Display can use this temporarily but not in average. */
        u32 dram_bandwidth = dce_v10_0_dram_bandwidth(wm);
        u32 data_return_bandwidth = dce_v10_0_data_return_bandwidth(wm);
        u32 dmif_req_bandwidth = dce_v10_0_dmif_request_bandwidth(wm);

        return min(dram_bandwidth, min(data_return_bandwidth, dmif_req_bandwidth));
}

/**
 * dce_v10_0_average_bandwidth - get the average available bandwidth
 *
 * @wm: watermark calculation data
 *
 * Calculate the average available bandwidth used for display (CIK).
 * Used for display watermark bandwidth calculations
 * Returns the average available bandwidth in MBytes/s
 */
static u32 dce_v10_0_average_bandwidth(struct dce10_wm_params *wm)
{
        /* Calculate the display mode Average Bandwidth
         * DisplayMode should contain the source and destination dimensions,
         * timing, etc.
         */
        fixed20_12 bpp;
        fixed20_12 line_time;
        fixed20_12 src_width;
        fixed20_12 bandwidth;
        fixed20_12 a;

        a.full = dfixed_const(1000);
        line_time.full = dfixed_const(wm->active_time + wm->blank_time);
        line_time.full = dfixed_div(line_time, a);
        bpp.full = dfixed_const(wm->bytes_per_pixel);
        src_width.full = dfixed_const(wm->src_width);
        bandwidth.full = dfixed_mul(src_width, bpp);
        bandwidth.full = dfixed_mul(bandwidth, wm->vsc);
        bandwidth.full = dfixed_div(bandwidth, line_time);

        return dfixed_trunc(bandwidth);
}

/**
 * dce_v10_0_latency_watermark - get the latency watermark
 *
 * @wm: watermark calculation data
 *
 * Calculate the latency watermark (CIK).
 * Used for display watermark bandwidth calculations
 * Returns the latency watermark in ns
 */
static u32 dce_v10_0_latency_watermark(struct dce10_wm_params *wm)
{
        /* First calculate the latency in ns */
        u32 mc_latency = 2000; /* 2000 ns. */
        u32 available_bandwidth = dce_v10_0_available_bandwidth(wm);
        u32 worst_chunk_return_time = (512 * 8 * 1000) / available_bandwidth;
        u32 cursor_line_pair_return_time = (128 * 4 * 1000) / available_bandwidth;
        u32 dc_latency = 40000000 / wm->disp_clk; /* dc pipe latency */
        u32 other_heads_data_return_time = ((wm->num_heads + 1) * worst_chunk_return_time) +
                (wm->num_heads * cursor_line_pair_return_time);
        u32 latency = mc_latency + other_heads_data_return_time + dc_latency;
        u32 max_src_lines_per_dst_line, lb_fill_bw, line_fill_time;
        u32 tmp, dmif_size = 12288;
        fixed20_12 a, b, c;

        if (wm->num_heads == 0)
                return 0;

        a.full = dfixed_const(2);
        b.full = dfixed_const(1);
        if ((wm->vsc.full > a.full) ||
            ((wm->vsc.full > b.full) && (wm->vtaps >= 3)) ||
            (wm->vtaps >= 5) ||
            ((wm->vsc.full >= a.full) && wm->interlaced))
                max_src_lines_per_dst_line = 4;
        else
                max_src_lines_per_dst_line = 2;

        a.full = dfixed_const(available_bandwidth);
        b.full = dfixed_const(wm->num_heads);
        a.full = dfixed_div(a, b);

        b.full = dfixed_const(mc_latency + 512);
        c.full = dfixed_const(wm->disp_clk);
        b.full = dfixed_div(b, c);

        c.full = dfixed_const(dmif_size);
        b.full = dfixed_div(c, b);

        tmp = min(dfixed_trunc(a), dfixed_trunc(b));

        b.full = dfixed_const(1000);
        c.full = dfixed_const(wm->disp_clk);
        b.full = dfixed_div(c, b);
        c.full = dfixed_const(wm->bytes_per_pixel);
        b.full = dfixed_mul(b, c);

        lb_fill_bw = min(tmp, dfixed_trunc(b));

        a.full = dfixed_const(max_src_lines_per_dst_line * wm->src_width * wm->bytes_per_pixel);
        b.full = dfixed_const(1000);
        c.full = dfixed_const(lb_fill_bw);
        b.full = dfixed_div(c, b);
        a.full = dfixed_div(a, b);
        line_fill_time = dfixed_trunc(a);

        if (line_fill_time < wm->active_time)
                return latency;
        else
                return latency + (line_fill_time - wm->active_time);

}

/**
 * dce_v10_0_average_bandwidth_vs_dram_bandwidth_for_display - check
 * average and available dram bandwidth
 *
 * @wm: watermark calculation data
 *
 * Check if the display average bandwidth fits in the display
 * dram bandwidth (CIK).
 * Used for display watermark bandwidth calculations
 * Returns true if the display fits, false if not.
 */
static bool dce_v10_0_average_bandwidth_vs_dram_bandwidth_for_display(struct dce10_wm_params *wm)
{
        if (dce_v10_0_average_bandwidth(wm) <=
            (dce_v10_0_dram_bandwidth_for_display(wm) / wm->num_heads))
                return true;
        else
                return false;
}

/**
 * dce_v10_0_average_bandwidth_vs_available_bandwidth - check
 * average and available bandwidth
 *
 * @wm: watermark calculation data
 *
 * Check if the display average bandwidth fits in the display
 * available bandwidth (CIK).
 * Used for display watermark bandwidth calculations
 * Returns true if the display fits, false if not.
 */
static bool dce_v10_0_average_bandwidth_vs_available_bandwidth(struct dce10_wm_params *wm)
{
        if (dce_v10_0_average_bandwidth(wm) <=
            (dce_v10_0_available_bandwidth(wm) / wm->num_heads))
                return true;
        else
                return false;
}

/**
 * dce_v10_0_check_latency_hiding - check latency hiding
 *
 * @wm: watermark calculation data
 *
 * Check latency hiding (CIK).
 * Used for display watermark bandwidth calculations
 * Returns true if the display fits, false if not.
 */
static bool dce_v10_0_check_latency_hiding(struct dce10_wm_params *wm)
{
        u32 lb_partitions = wm->lb_size / wm->src_width;
        u32 line_time = wm->active_time + wm->blank_time;
        u32 latency_tolerant_lines;
        u32 latency_hiding;
        fixed20_12 a;

        a.full = dfixed_const(1);
        if (wm->vsc.full > a.full)
                latency_tolerant_lines = 1;
        else {
                if (lb_partitions <= (wm->vtaps + 1))
                        latency_tolerant_lines = 1;
                else
                        latency_tolerant_lines = 2;
        }

        latency_hiding = (latency_tolerant_lines * line_time + wm->blank_time);

        if (dce_v10_0_latency_watermark(wm) <= latency_hiding)
                return true;
        else
                return false;
}

/**
 * dce_v10_0_program_watermarks - program display watermarks
 *
 * @adev: amdgpu_device pointer
 * @amdgpu_crtc: the selected display controller
 * @lb_size: line buffer size
 * @num_heads: number of display controllers in use
 *
 * Calculate and program the display watermarks for the
 * selected display controller (CIK).
 */
static void dce_v10_0_program_watermarks(struct amdgpu_device *adev,
                                        struct amdgpu_crtc *amdgpu_crtc,
                                        u32 lb_size, u32 num_heads)
{
        struct drm_display_mode *mode = &amdgpu_crtc->base.mode;
        struct dce10_wm_params wm_low, wm_high;
        u32 pixel_period;
        u32 line_time = 0;
        u32 latency_watermark_a = 0, latency_watermark_b = 0;
        u32 tmp, wm_mask;

        if (amdgpu_crtc->base.enabled && num_heads && mode) {
                pixel_period = 1000000 / (u32)mode->clock;
                line_time = min((u32)mode->crtc_htotal * pixel_period, (u32)65535);

                /* watermark for high clocks */
                if (adev->pm.dpm_enabled) {
                        wm_high.yclk =
                                amdgpu_dpm_get_mclk(adev, false) * 10;
                        wm_high.sclk =
                                amdgpu_dpm_get_sclk(adev, false) * 10;
                } else {
                        wm_high.yclk = adev->pm.current_mclk * 10;
                        wm_high.sclk = adev->pm.current_sclk * 10;
                }

                wm_high.disp_clk = mode->clock;
                wm_high.src_width = mode->crtc_hdisplay;
                wm_high.active_time = mode->crtc_hdisplay * pixel_period;
                wm_high.blank_time = line_time - wm_high.active_time;
                wm_high.interlaced = false;
                if (mode->flags & DRM_MODE_FLAG_INTERLACE)
                        wm_high.interlaced = true;
                wm_high.vsc = amdgpu_crtc->vsc;
                wm_high.vtaps = 1;
                if (amdgpu_crtc->rmx_type != RMX_OFF)
                        wm_high.vtaps = 2;
                wm_high.bytes_per_pixel = 4; /* XXX: get this from fb config */
                wm_high.lb_size = lb_size;
                wm_high.dram_channels = cik_get_number_of_dram_channels(adev);
                wm_high.num_heads = num_heads;

                /* set for high clocks */
                latency_watermark_a = min(dce_v10_0_latency_watermark(&wm_high), (u32)65535);

                /* possibly force display priority to high */
                /* should really do this at mode validation time... */
                if (!dce_v10_0_average_bandwidth_vs_dram_bandwidth_for_display(&wm_high) ||
                    !dce_v10_0_average_bandwidth_vs_available_bandwidth(&wm_high) ||
                    !dce_v10_0_check_latency_hiding(&wm_high) ||
                    (adev->mode_info.disp_priority == 2)) {
                        DRM_DEBUG_KMS("force priority to high\n");
                }

                /* watermark for low clocks */
                if (adev->pm.dpm_enabled) {
                        wm_low.yclk =
                                amdgpu_dpm_get_mclk(adev, true) * 10;
                        wm_low.sclk =
                                amdgpu_dpm_get_sclk(adev, true) * 10;
                } else {
                        wm_low.yclk = adev->pm.current_mclk * 10;
                        wm_low.sclk = adev->pm.current_sclk * 10;
                }

                wm_low.disp_clk = mode->clock;
                wm_low.src_width = mode->crtc_hdisplay;
                wm_low.active_time = mode->crtc_hdisplay * pixel_period;
                wm_low.blank_time = line_time - wm_low.active_time;
                wm_low.interlaced = false;
                if (mode->flags & DRM_MODE_FLAG_INTERLACE)
                        wm_low.interlaced = true;
                wm_low.vsc = amdgpu_crtc->vsc;
                wm_low.vtaps = 1;
                if (amdgpu_crtc->rmx_type != RMX_OFF)
                        wm_low.vtaps = 2;
                wm_low.bytes_per_pixel = 4; /* XXX: get this from fb config */
                wm_low.lb_size = lb_size;
                wm_low.dram_channels = cik_get_number_of_dram_channels(adev);
                wm_low.num_heads = num_heads;

                /* set for low clocks */
                latency_watermark_b = min(dce_v10_0_latency_watermark(&wm_low), (u32)65535);

                /* possibly force display priority to high */
                /* should really do this at mode validation time... */
                if (!dce_v10_0_average_bandwidth_vs_dram_bandwidth_for_display(&wm_low) ||
                    !dce_v10_0_average_bandwidth_vs_available_bandwidth(&wm_low) ||
                    !dce_v10_0_check_latency_hiding(&wm_low) ||
                    (adev->mode_info.disp_priority == 2)) {
                        DRM_DEBUG_KMS("force priority to high\n");
                }
        }

        /* select wm A */
        wm_mask = RREG32(mmDPG_WATERMARK_MASK_CONTROL + amdgpu_crtc->crtc_offset);
        tmp = REG_SET_FIELD(wm_mask, DPG_WATERMARK_MASK_CONTROL, URGENCY_WATERMARK_MASK, 1);
        WREG32(mmDPG_WATERMARK_MASK_CONTROL + amdgpu_crtc->crtc_offset, tmp);
        tmp = RREG32(mmDPG_PIPE_URGENCY_CONTROL + amdgpu_crtc->crtc_offset);
        tmp = REG_SET_FIELD(tmp, DPG_PIPE_URGENCY_CONTROL, URGENCY_LOW_WATERMARK, latency_watermark_a);
        tmp = REG_SET_FIELD(tmp, DPG_PIPE_URGENCY_CONTROL, URGENCY_HIGH_WATERMARK, line_time);
        WREG32(mmDPG_PIPE_URGENCY_CONTROL + amdgpu_crtc->crtc_offset, tmp);
        /* select wm B */
        tmp = REG_SET_FIELD(wm_mask, DPG_WATERMARK_MASK_CONTROL, URGENCY_WATERMARK_MASK, 2);
        WREG32(mmDPG_WATERMARK_MASK_CONTROL + amdgpu_crtc->crtc_offset, tmp);
        tmp = RREG32(mmDPG_PIPE_URGENCY_CONTROL + amdgpu_crtc->crtc_offset);
        tmp = REG_SET_FIELD(tmp, DPG_PIPE_URGENCY_CONTROL, URGENCY_LOW_WATERMARK, latency_watermark_a);
        tmp = REG_SET_FIELD(tmp, DPG_PIPE_URGENCY_CONTROL, URGENCY_HIGH_WATERMARK, line_time);
        WREG32(mmDPG_PIPE_URGENCY_CONTROL + amdgpu_crtc->crtc_offset, tmp);
        /* restore original selection */
        WREG32(mmDPG_WATERMARK_MASK_CONTROL + amdgpu_crtc->crtc_offset, wm_mask);

        /* save values for DPM */
        amdgpu_crtc->line_time = line_time;
        amdgpu_crtc->wm_high = latency_watermark_a;
        amdgpu_crtc->wm_low = latency_watermark_b;
}

/**
 * dce_v10_0_bandwidth_update - program display watermarks
 *
 * @adev: amdgpu_device pointer
 *
 * Calculate and program the display watermarks and line
 * buffer allocation (CIK).
 */
static void dce_v10_0_bandwidth_update(struct amdgpu_device *adev)
{
        struct drm_display_mode *mode = NULL;
        u32 num_heads = 0, lb_size;
        int i;

        amdgpu_update_display_priority(adev);

        for (i = 0; i < adev->mode_info.num_crtc; i++) {
                if (adev->mode_info.crtcs[i]->base.enabled)
                        num_heads++;
        }
        for (i = 0; i < adev->mode_info.num_crtc; i++) {
                mode = &adev->mode_info.crtcs[i]->base.mode;
                lb_size = dce_v10_0_line_buffer_adjust(adev, adev->mode_info.crtcs[i], mode);
                dce_v10_0_program_watermarks(adev, adev->mode_info.crtcs[i],
                                            lb_size, num_heads);
        }
}

static void dce_v10_0_audio_get_connected_pins(struct amdgpu_device *adev)
{
        int i;
        u32 offset, tmp;

        for (i = 0; i < adev->mode_info.audio.num_pins; i++) {
                offset = adev->mode_info.audio.pin[i].offset;
                tmp = RREG32_AUDIO_ENDPT(offset,
                                         ixAZALIA_F0_CODEC_PIN_CONTROL_RESPONSE_CONFIGURATION_DEFAULT);
                if (((tmp &
                AZALIA_F0_CODEC_PIN_CONTROL_RESPONSE_CONFIGURATION_DEFAULT__PORT_CONNECTIVITY_MASK) >>
                AZALIA_F0_CODEC_PIN_CONTROL_RESPONSE_CONFIGURATION_DEFAULT__PORT_CONNECTIVITY__SHIFT) == 1)
                        adev->mode_info.audio.pin[i].connected = false;
                else
                        adev->mode_info.audio.pin[i].connected = true;
        }
}

static struct amdgpu_audio_pin *dce_v10_0_audio_get_pin(struct amdgpu_device *adev)
{
        int i;

        dce_v10_0_audio_get_connected_pins(adev);

        for (i = 0; i < adev->mode_info.audio.num_pins; i++) {
                if (adev->mode_info.audio.pin[i].connected)
                        return &adev->mode_info.audio.pin[i];
        }
        DRM_ERROR("No connected audio pins found!\n");
        return NULL;
}

static void dce_v10_0_afmt_audio_select_pin(struct drm_encoder *encoder)
{
        struct amdgpu_device *adev = encoder->dev->dev_private;
        struct amdgpu_encoder *amdgpu_encoder = to_amdgpu_encoder(encoder);
        struct amdgpu_encoder_atom_dig *dig = amdgpu_encoder->enc_priv;
        u32 tmp;

        if (!dig || !dig->afmt || !dig->afmt->pin)
                return;

        tmp = RREG32(mmAFMT_AUDIO_SRC_CONTROL + dig->afmt->offset);
        tmp = REG_SET_FIELD(tmp, AFMT_AUDIO_SRC_CONTROL, AFMT_AUDIO_SRC_SELECT, dig->afmt->pin->id);
        WREG32(mmAFMT_AUDIO_SRC_CONTROL + dig->afmt->offset, tmp);
}

static void dce_v10_0_audio_write_latency_fields(struct drm_encoder *encoder,
                                                struct drm_display_mode *mode)
{
        struct amdgpu_device *adev = encoder->dev->dev_private;
        struct amdgpu_encoder *amdgpu_encoder = to_amdgpu_encoder(encoder);
        struct amdgpu_encoder_atom_dig *dig = amdgpu_encoder->enc_priv;
        struct drm_connector *connector;
        struct amdgpu_connector *amdgpu_connector = NULL;
        u32 tmp;
        int interlace = 0;

        if (!dig || !dig->afmt || !dig->afmt->pin)
                return;

        list_for_each_entry(connector, &encoder->dev->mode_config.connector_list, head) {
                if (connector->encoder == encoder) {
                        amdgpu_connector = to_amdgpu_connector(connector);
                        break;
                }
        }

        if (!amdgpu_connector) {
                DRM_ERROR("Couldn't find encoder's connector\n");
                return;
        }

        if (mode->flags & DRM_MODE_FLAG_INTERLACE)
                interlace = 1;
        if (connector->latency_present[interlace]) {
                tmp = REG_SET_FIELD(0, AZALIA_F0_CODEC_PIN_CONTROL_RESPONSE_LIPSYNC,
                                    VIDEO_LIPSYNC, connector->video_latency[interlace]);
                tmp = REG_SET_FIELD(0, AZALIA_F0_CODEC_PIN_CONTROL_RESPONSE_LIPSYNC,
                                    AUDIO_LIPSYNC, connector->audio_latency[interlace]);
        } else {
                tmp = REG_SET_FIELD(0, AZALIA_F0_CODEC_PIN_CONTROL_RESPONSE_LIPSYNC,
                                    VIDEO_LIPSYNC, 0);
                tmp = REG_SET_FIELD(0, AZALIA_F0_CODEC_PIN_CONTROL_RESPONSE_LIPSYNC,
                                    AUDIO_LIPSYNC, 0);
        }
        WREG32_AUDIO_ENDPT(dig->afmt->pin->offset,
                           ixAZALIA_F0_CODEC_PIN_CONTROL_RESPONSE_LIPSYNC, tmp);
}

static void dce_v10_0_audio_write_speaker_allocation(struct drm_encoder *encoder)
{
        struct amdgpu_device *adev = encoder->dev->dev_private;
        struct amdgpu_encoder *amdgpu_encoder = to_amdgpu_encoder(encoder);
        struct amdgpu_encoder_atom_dig *dig = amdgpu_encoder->enc_priv;
        struct drm_connector *connector;
        struct amdgpu_connector *amdgpu_connector = NULL;
        u32 tmp;
        u8 *sadb = NULL;
        int sad_count;

        if (!dig || !dig->afmt || !dig->afmt->pin)
                return;

        list_for_each_entry(connector, &encoder->dev->mode_config.connector_list, head) {
                if (connector->encoder == encoder) {
                        amdgpu_connector = to_amdgpu_connector(connector);
                        break;
                }
        }

        if (!amdgpu_connector) {
                DRM_ERROR("Couldn't find encoder's connector\n");
                return;
        }

        sad_count = drm_edid_to_speaker_allocation(amdgpu_connector_edid(connector), &sadb);
        if (sad_count < 0) {
                DRM_ERROR("Couldn't read Speaker Allocation Data Block: %d\n", sad_count);
                sad_count = 0;
        }

        /* program the speaker allocation */
        tmp = RREG32_AUDIO_ENDPT(dig->afmt->pin->offset,
                                 ixAZALIA_F0_CODEC_PIN_CONTROL_CHANNEL_SPEAKER);
        tmp = REG_SET_FIELD(tmp, AZALIA_F0_CODEC_PIN_CONTROL_CHANNEL_SPEAKER,
                            DP_CONNECTION, 0);
        /* set HDMI mode */
        tmp = REG_SET_FIELD(tmp, AZALIA_F0_CODEC_PIN_CONTROL_CHANNEL_SPEAKER,
                            HDMI_CONNECTION, 1);
        if (sad_count)
                tmp = REG_SET_FIELD(tmp, AZALIA_F0_CODEC_PIN_CONTROL_CHANNEL_SPEAKER,
                                    SPEAKER_ALLOCATION, sadb[0]);
        else
                tmp = REG_SET_FIELD(tmp, AZALIA_F0_CODEC_PIN_CONTROL_CHANNEL_SPEAKER,
                                    SPEAKER_ALLOCATION, 5); /* stereo */
        WREG32_AUDIO_ENDPT(dig->afmt->pin->offset,
                           ixAZALIA_F0_CODEC_PIN_CONTROL_CHANNEL_SPEAKER, tmp);

        kfree(sadb);
}

static void dce_v10_0_audio_write_sad_regs(struct drm_encoder *encoder)
{
        struct amdgpu_device *adev = encoder->dev->dev_private;
        struct amdgpu_encoder *amdgpu_encoder = to_amdgpu_encoder(encoder);
        struct amdgpu_encoder_atom_dig *dig = amdgpu_encoder->enc_priv;
        struct drm_connector *connector;
        struct amdgpu_connector *amdgpu_connector = NULL;
        struct cea_sad *sads;
        int i, sad_count;

        static const u16 eld_reg_to_type[][2] = {
                { ixAZALIA_F0_CODEC_PIN_CONTROL_AUDIO_DESCRIPTOR0, HDMI_AUDIO_CODING_TYPE_PCM },
                { ixAZALIA_F0_CODEC_PIN_CONTROL_AUDIO_DESCRIPTOR1, HDMI_AUDIO_CODING_TYPE_AC3 },
                { ixAZALIA_F0_CODEC_PIN_CONTROL_AUDIO_DESCRIPTOR2, HDMI_AUDIO_CODING_TYPE_MPEG1 },
                { ixAZALIA_F0_CODEC_PIN_CONTROL_AUDIO_DESCRIPTOR3, HDMI_AUDIO_CODING_TYPE_MP3 },
                { ixAZALIA_F0_CODEC_PIN_CONTROL_AUDIO_DESCRIPTOR4, HDMI_AUDIO_CODING_TYPE_MPEG2 },
                { ixAZALIA_F0_CODEC_PIN_CONTROL_AUDIO_DESCRIPTOR5, HDMI_AUDIO_CODING_TYPE_AAC_LC },
                { ixAZALIA_F0_CODEC_PIN_CONTROL_AUDIO_DESCRIPTOR6, HDMI_AUDIO_CODING_TYPE_DTS },
                { ixAZALIA_F0_CODEC_PIN_CONTROL_AUDIO_DESCRIPTOR7, HDMI_AUDIO_CODING_TYPE_ATRAC },
                { ixAZALIA_F0_CODEC_PIN_CONTROL_AUDIO_DESCRIPTOR9, HDMI_AUDIO_CODING_TYPE_EAC3 },
                { ixAZALIA_F0_CODEC_PIN_CONTROL_AUDIO_DESCRIPTOR10, HDMI_AUDIO_CODING_TYPE_DTS_HD },
                { ixAZALIA_F0_CODEC_PIN_CONTROL_AUDIO_DESCRIPTOR11, HDMI_AUDIO_CODING_TYPE_MLP },
                { ixAZALIA_F0_CODEC_PIN_CONTROL_AUDIO_DESCRIPTOR13, HDMI_AUDIO_CODING_TYPE_WMA_PRO },
        };

        if (!dig || !dig->afmt || !dig->afmt->pin)
                return;

        list_for_each_entry(connector, &encoder->dev->mode_config.connector_list, head) {
                if (connector->encoder == encoder) {
                        amdgpu_connector = to_amdgpu_connector(connector);
                        break;
                }
        }

        if (!amdgpu_connector) {
                DRM_ERROR("Couldn't find encoder's connector\n");
                return;
        }

        sad_count = drm_edid_to_sad(amdgpu_connector_edid(connector), &sads);
        if (sad_count <= 0) {
                DRM_ERROR("Couldn't read SADs: %d\n", sad_count);
                return;
        }
        BUG_ON(!sads);

        for (i = 0; i < ARRAY_SIZE(eld_reg_to_type); i++) {
                u32 tmp = 0;
                u8 stereo_freqs = 0;
                int max_channels = -1;
                int j;

                for (j = 0; j < sad_count; j++) {
                        struct cea_sad *sad = &sads[j];

                        if (sad->format == eld_reg_to_type[i][1]) {
                                if (sad->channels > max_channels) {
                                        tmp = REG_SET_FIELD(tmp, AZALIA_F0_CODEC_PIN_CONTROL_AUDIO_DESCRIPTOR0,
                                                            MAX_CHANNELS, sad->channels);
                                        tmp = REG_SET_FIELD(tmp, AZALIA_F0_CODEC_PIN_CONTROL_AUDIO_DESCRIPTOR0,
                                                            DESCRIPTOR_BYTE_2, sad->byte2);
                                        tmp = REG_SET_FIELD(tmp, AZALIA_F0_CODEC_PIN_CONTROL_AUDIO_DESCRIPTOR0,
                                                            SUPPORTED_FREQUENCIES, sad->freq);
                                        max_channels = sad->channels;
                                }

                                if (sad->format == HDMI_AUDIO_CODING_TYPE_PCM)
                                        stereo_freqs |= sad->freq;
                                else
                                        break;
                        }
                }

                tmp = REG_SET_FIELD(tmp, AZALIA_F0_CODEC_PIN_CONTROL_AUDIO_DESCRIPTOR0,
                                    SUPPORTED_FREQUENCIES_STEREO, stereo_freqs);
                WREG32_AUDIO_ENDPT(dig->afmt->pin->offset, eld_reg_to_type[i][0], tmp);
        }

        kfree(sads);
}

static void dce_v10_0_audio_enable(struct amdgpu_device *adev,
                                  struct amdgpu_audio_pin *pin,
                                  bool enable)
{
        if (!pin)
                return;

        WREG32_AUDIO_ENDPT(pin->offset, ixAZALIA_F0_CODEC_PIN_CONTROL_HOT_PLUG_CONTROL,
                           enable ? AZALIA_F0_CODEC_PIN_CONTROL_HOT_PLUG_CONTROL__AUDIO_ENABLED_MASK : 0);
}

static const u32 pin_offsets[] =
{
        AUD0_REGISTER_OFFSET,
        AUD1_REGISTER_OFFSET,
        AUD2_REGISTER_OFFSET,
        AUD3_REGISTER_OFFSET,
        AUD4_REGISTER_OFFSET,
        AUD5_REGISTER_OFFSET,
        AUD6_REGISTER_OFFSET,
};

static int dce_v10_0_audio_init(struct amdgpu_device *adev)
{
        int i;

        if (!amdgpu_audio)
                return 0;

        adev->mode_info.audio.enabled = true;

        adev->mode_info.audio.num_pins = 7;

        for (i = 0; i < adev->mode_info.audio.num_pins; i++) {
                adev->mode_info.audio.pin[i].channels = -1;
                adev->mode_info.audio.pin[i].rate = -1;
                adev->mode_info.audio.pin[i].bits_per_sample = -1;
                adev->mode_info.audio.pin[i].status_bits = 0;
                adev->mode_info.audio.pin[i].category_code = 0;
                adev->mode_info.audio.pin[i].connected = false;
                adev->mode_info.audio.pin[i].offset = pin_offsets[i];
                adev->mode_info.audio.pin[i].id = i;
                /* disable audio.  it will be set up later */
                /* XXX remove once we switch to ip funcs */
                dce_v10_0_audio_enable(adev, &adev->mode_info.audio.pin[i], false);
        }

        return 0;
}

static void dce_v10_0_audio_fini(struct amdgpu_device *adev)
{
        int i;

        if (!adev->mode_info.audio.enabled)
                return;

        for (i = 0; i < adev->mode_info.audio.num_pins; i++)
                dce_v10_0_audio_enable(adev, &adev->mode_info.audio.pin[i], false);

        adev->mode_info.audio.enabled = false;
}

/*
 * update the N and CTS parameters for a given pixel clock rate
 */
static void dce_v10_0_afmt_update_ACR(struct drm_encoder *encoder, uint32_t clock)
{
        struct drm_device *dev = encoder->dev;
        struct amdgpu_device *adev = dev->dev_private;
        struct amdgpu_afmt_acr acr = amdgpu_afmt_acr(clock);
        struct amdgpu_encoder *amdgpu_encoder = to_amdgpu_encoder(encoder);
        struct amdgpu_encoder_atom_dig *dig = amdgpu_encoder->enc_priv;
        u32 tmp;

        tmp = RREG32(mmHDMI_ACR_32_0 + dig->afmt->offset);
        tmp = REG_SET_FIELD(tmp, HDMI_ACR_32_0, HDMI_ACR_CTS_32, acr.cts_32khz);
        WREG32(mmHDMI_ACR_32_0 + dig->afmt->offset, tmp);
        tmp = RREG32(mmHDMI_ACR_32_1 + dig->afmt->offset);
        tmp = REG_SET_FIELD(tmp, HDMI_ACR_32_1, HDMI_ACR_N_32, acr.n_32khz);
        WREG32(mmHDMI_ACR_32_1 + dig->afmt->offset, tmp);

        tmp = RREG32(mmHDMI_ACR_44_0 + dig->afmt->offset);
        tmp = REG_SET_FIELD(tmp, HDMI_ACR_44_0, HDMI_ACR_CTS_44, acr.cts_44_1khz);
        WREG32(mmHDMI_ACR_44_0 + dig->afmt->offset, tmp);
        tmp = RREG32(mmHDMI_ACR_44_1 + dig->afmt->offset);
        tmp = REG_SET_FIELD(tmp, HDMI_ACR_44_1, HDMI_ACR_N_44, acr.n_44_1khz);
        WREG32(mmHDMI_ACR_44_1 + dig->afmt->offset, tmp);

        tmp = RREG32(mmHDMI_ACR_48_0 + dig->afmt->offset);
        tmp = REG_SET_FIELD(tmp, HDMI_ACR_48_0, HDMI_ACR_CTS_48, acr.cts_48khz);
        WREG32(mmHDMI_ACR_48_0 + dig->afmt->offset, tmp);
        tmp = RREG32(mmHDMI_ACR_48_1 + dig->afmt->offset);
        tmp = REG_SET_FIELD(tmp, HDMI_ACR_48_1, HDMI_ACR_N_48, acr.n_48khz);
        WREG32(mmHDMI_ACR_48_1 + dig->afmt->offset, tmp);

}

/*
 * build a HDMI Video Info Frame
 */
static void dce_v10_0_afmt_update_avi_infoframe(struct drm_encoder *encoder,
                                               void *buffer, size_t size)
{
        struct drm_device *dev = encoder->dev;
        struct amdgpu_device *adev = dev->dev_private;
        struct amdgpu_encoder *amdgpu_encoder = to_amdgpu_encoder(encoder);
        struct amdgpu_encoder_atom_dig *dig = amdgpu_encoder->enc_priv;
        uint8_t *frame = buffer + 3;
        uint8_t *header = buffer;

        WREG32(mmAFMT_AVI_INFO0 + dig->afmt->offset,
                frame[0x0] | (frame[0x1] << 8) | (frame[0x2] << 16) | (frame[0x3] << 24));
        WREG32(mmAFMT_AVI_INFO1 + dig->afmt->offset,
                frame[0x4] | (frame[0x5] << 8) | (frame[0x6] << 16) | (frame[0x7] << 24));
        WREG32(mmAFMT_AVI_INFO2 + dig->afmt->offset,
                frame[0x8] | (frame[0x9] << 8) | (frame[0xA] << 16) | (frame[0xB] << 24));
        WREG32(mmAFMT_AVI_INFO3 + dig->afmt->offset,
                frame[0xC] | (frame[0xD] << 8) | (header[1] << 24));
}

static void dce_v10_0_audio_set_dto(struct drm_encoder *encoder, u32 clock)
{
        struct drm_device *dev = encoder->dev;
        struct amdgpu_device *adev = dev->dev_private;
        struct amdgpu_encoder *amdgpu_encoder = to_amdgpu_encoder(encoder);
        struct amdgpu_encoder_atom_dig *dig = amdgpu_encoder->enc_priv;
        struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(encoder->crtc);
        u32 dto_phase = 24 * 1000;
        u32 dto_modulo = clock;
        u32 tmp;

        if (!dig || !dig->afmt)
                return;

        /* XXX two dtos; generally use dto0 for hdmi */
        /* Express [24MHz / target pixel clock] as an exact rational
         * number (coefficient of two integer numbers.  DCCG_AUDIO_DTOx_PHASE
         * is the numerator, DCCG_AUDIO_DTOx_MODULE is the denominator
         */
        tmp = RREG32(mmDCCG_AUDIO_DTO_SOURCE);
        tmp = REG_SET_FIELD(tmp, DCCG_AUDIO_DTO_SOURCE, DCCG_AUDIO_DTO0_SOURCE_SEL,
                            amdgpu_crtc->crtc_id);
        WREG32(mmDCCG_AUDIO_DTO_SOURCE, tmp);
        WREG32(mmDCCG_AUDIO_DTO0_PHASE, dto_phase);
        WREG32(mmDCCG_AUDIO_DTO0_MODULE, dto_modulo);
}

/*
 * update the info frames with the data from the current display mode
 */
static void dce_v10_0_afmt_setmode(struct drm_encoder *encoder,
                                  struct drm_display_mode *mode)
{
        struct drm_device *dev = encoder->dev;
        struct amdgpu_device *adev = dev->dev_private;
        struct amdgpu_encoder *amdgpu_encoder = to_amdgpu_encoder(encoder);
        struct amdgpu_encoder_atom_dig *dig = amdgpu_encoder->enc_priv;
        struct drm_connector *connector = amdgpu_get_connector_for_encoder(encoder);
        u8 buffer[HDMI_INFOFRAME_HEADER_SIZE + HDMI_AVI_INFOFRAME_SIZE];
        struct hdmi_avi_infoframe frame;
        ssize_t err;
        u32 tmp;
        int bpc = 8;

        if (!dig || !dig->afmt)
                return;

        /* Silent, r600_hdmi_enable will raise WARN for us */
        if (!dig->afmt->enabled)
                return;

        /* hdmi deep color mode general control packets setup, if bpc > 8 */
        if (encoder->crtc) {
                struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(encoder->crtc);
                bpc = amdgpu_crtc->bpc;
        }

        /* disable audio prior to setting up hw */
        dig->afmt->pin = dce_v10_0_audio_get_pin(adev);
        dce_v10_0_audio_enable(adev, dig->afmt->pin, false);

        dce_v10_0_audio_set_dto(encoder, mode->clock);

        tmp = RREG32(mmHDMI_VBI_PACKET_CONTROL + dig->afmt->offset);
        tmp = REG_SET_FIELD(tmp, HDMI_VBI_PACKET_CONTROL, HDMI_NULL_SEND, 1);
        WREG32(mmHDMI_VBI_PACKET_CONTROL + dig->afmt->offset, tmp); /* send null packets when required */

        WREG32(mmAFMT_AUDIO_CRC_CONTROL + dig->afmt->offset, 0x1000);

        tmp = RREG32(mmHDMI_CONTROL + dig->afmt->offset);
        switch (bpc) {
        case 0:
        case 6:
        case 8:
        case 16:
        default:
                tmp = REG_SET_FIELD(tmp, HDMI_CONTROL, HDMI_DEEP_COLOR_ENABLE, 0);
                tmp = REG_SET_FIELD(tmp, HDMI_CONTROL, HDMI_DEEP_COLOR_DEPTH, 0);
                DRM_DEBUG("%s: Disabling hdmi deep color for %d bpc.\n",
                          connector->name, bpc);
                break;
        case 10:
                tmp = REG_SET_FIELD(tmp, HDMI_CONTROL, HDMI_DEEP_COLOR_ENABLE, 1);
                tmp = REG_SET_FIELD(tmp, HDMI_CONTROL, HDMI_DEEP_COLOR_DEPTH, 1);
                DRM_DEBUG("%s: Enabling hdmi deep color 30 for 10 bpc.\n",
                          connector->name);
                break;
        case 12:
                tmp = REG_SET_FIELD(tmp, HDMI_CONTROL, HDMI_DEEP_COLOR_ENABLE, 1);
                tmp = REG_SET_FIELD(tmp, HDMI_CONTROL, HDMI_DEEP_COLOR_DEPTH, 2);
                DRM_DEBUG("%s: Enabling hdmi deep color 36 for 12 bpc.\n",
                          connector->name);
                break;
        }
        WREG32(mmHDMI_CONTROL + dig->afmt->offset, tmp);

        tmp = RREG32(mmHDMI_VBI_PACKET_CONTROL + dig->afmt->offset);
        tmp = REG_SET_FIELD(tmp, HDMI_VBI_PACKET_CONTROL, HDMI_NULL_SEND, 1); /* send null packets when required */
        tmp = REG_SET_FIELD(tmp, HDMI_VBI_PACKET_CONTROL, HDMI_GC_SEND, 1); /* send general control packets */
        tmp = REG_SET_FIELD(tmp, HDMI_VBI_PACKET_CONTROL, HDMI_GC_CONT, 1); /* send general control packets every frame */
        WREG32(mmHDMI_VBI_PACKET_CONTROL + dig->afmt->offset, tmp);

        tmp = RREG32(mmHDMI_INFOFRAME_CONTROL0 + dig->afmt->offset);
        /* enable audio info frames (frames won't be set until audio is enabled) */
        tmp = REG_SET_FIELD(tmp, HDMI_INFOFRAME_CONTROL0, HDMI_AUDIO_INFO_SEND, 1);
        /* required for audio info values to be updated */
        tmp = REG_SET_FIELD(tmp, HDMI_INFOFRAME_CONTROL0, HDMI_AUDIO_INFO_CONT, 1);
        WREG32(mmHDMI_INFOFRAME_CONTROL0 + dig->afmt->offset, tmp);

        tmp = RREG32(mmAFMT_INFOFRAME_CONTROL0 + dig->afmt->offset);
        /* required for audio info values to be updated */
        tmp = REG_SET_FIELD(tmp, AFMT_INFOFRAME_CONTROL0, AFMT_AUDIO_INFO_UPDATE, 1);
        WREG32(mmAFMT_INFOFRAME_CONTROL0 + dig->afmt->offset, tmp);

        tmp = RREG32(mmHDMI_INFOFRAME_CONTROL1 + dig->afmt->offset);
        /* anything other than 0 */
        tmp = REG_SET_FIELD(tmp, HDMI_INFOFRAME_CONTROL1, HDMI_AUDIO_INFO_LINE, 2);
        WREG32(mmHDMI_INFOFRAME_CONTROL1 + dig->afmt->offset, tmp);

        WREG32(mmHDMI_GC + dig->afmt->offset, 0); /* unset HDMI_GC_AVMUTE */

        tmp = RREG32(mmHDMI_AUDIO_PACKET_CONTROL + dig->afmt->offset);
        /* set the default audio delay */
        tmp = REG_SET_FIELD(tmp, HDMI_AUDIO_PACKET_CONTROL, HDMI_AUDIO_DELAY_EN, 1);
        /* should be suffient for all audio modes and small enough for all hblanks */
        tmp = REG_SET_FIELD(tmp, HDMI_AUDIO_PACKET_CONTROL, HDMI_AUDIO_PACKETS_PER_LINE, 3);
        WREG32(mmHDMI_AUDIO_PACKET_CONTROL + dig->afmt->offset, tmp);

        tmp = RREG32(mmAFMT_AUDIO_PACKET_CONTROL + dig->afmt->offset);
        /* allow 60958 channel status fields to be updated */
        tmp = REG_SET_FIELD(tmp, AFMT_AUDIO_PACKET_CONTROL, AFMT_60958_CS_UPDATE, 1);
        WREG32(mmAFMT_AUDIO_PACKET_CONTROL + dig->afmt->offset, tmp);

        tmp = RREG32(mmHDMI_ACR_PACKET_CONTROL + dig->afmt->offset);
        if (bpc > 8)
                /* clear SW CTS value */
                tmp = REG_SET_FIELD(tmp, HDMI_ACR_PACKET_CONTROL, HDMI_ACR_SOURCE, 0);
        else
                /* select SW CTS value */
                tmp = REG_SET_FIELD(tmp, HDMI_ACR_PACKET_CONTROL, HDMI_ACR_SOURCE, 1);
        /* allow hw to sent ACR packets when required */
        tmp = REG_SET_FIELD(tmp, HDMI_ACR_PACKET_CONTROL, HDMI_ACR_AUTO_SEND, 1);
        WREG32(mmHDMI_ACR_PACKET_CONTROL + dig->afmt->offset, tmp);

        dce_v10_0_afmt_update_ACR(encoder, mode->clock);

        tmp = RREG32(mmAFMT_60958_0 + dig->afmt->offset);
        tmp = REG_SET_FIELD(tmp, AFMT_60958_0, AFMT_60958_CS_CHANNEL_NUMBER_L, 1);
        WREG32(mmAFMT_60958_0 + dig->afmt->offset, tmp);

        tmp = RREG32(mmAFMT_60958_1 + dig->afmt->offset);
        tmp = REG_SET_FIELD(tmp, AFMT_60958_1, AFMT_60958_CS_CHANNEL_NUMBER_R, 2);
        WREG32(mmAFMT_60958_1 + dig->afmt->offset, tmp);

        tmp = RREG32(mmAFMT_60958_2 + dig->afmt->offset);
        tmp = REG_SET_FIELD(tmp, AFMT_60958_2, AFMT_60958_CS_CHANNEL_NUMBER_2, 3);
        tmp = REG_SET_FIELD(tmp, AFMT_60958_2, AFMT_60958_CS_CHANNEL_NUMBER_3, 4);
        tmp = REG_SET_FIELD(tmp, AFMT_60958_2, AFMT_60958_CS_CHANNEL_NUMBER_4, 5);
        tmp = REG_SET_FIELD(tmp, AFMT_60958_2, AFMT_60958_CS_CHANNEL_NUMBER_5, 6);
        tmp = REG_SET_FIELD(tmp, AFMT_60958_2, AFMT_60958_CS_CHANNEL_NUMBER_6, 7);
        tmp = REG_SET_FIELD(tmp, AFMT_60958_2, AFMT_60958_CS_CHANNEL_NUMBER_7, 8);
        WREG32(mmAFMT_60958_2 + dig->afmt->offset, tmp);

        dce_v10_0_audio_write_speaker_allocation(encoder);

        WREG32(mmAFMT_AUDIO_PACKET_CONTROL2 + dig->afmt->offset,
               (0xff << AFMT_AUDIO_PACKET_CONTROL2__AFMT_AUDIO_CHANNEL_ENABLE__SHIFT));

        dce_v10_0_afmt_audio_select_pin(encoder);
        dce_v10_0_audio_write_sad_regs(encoder);
        dce_v10_0_audio_write_latency_fields(encoder, mode);

        err = drm_hdmi_avi_infoframe_from_display_mode(&frame, mode);
        if (err < 0) {
                DRM_ERROR("failed to setup AVI infoframe: %zd\n", err);
                return;
        }

        err = hdmi_avi_infoframe_pack(&frame, buffer, sizeof(buffer));
        if (err < 0) {
                DRM_ERROR("failed to pack AVI infoframe: %zd\n", err);
                return;
        }

        dce_v10_0_afmt_update_avi_infoframe(encoder, buffer, sizeof(buffer));

        tmp = RREG32(mmHDMI_INFOFRAME_CONTROL0 + dig->afmt->offset);
        /* enable AVI info frames */
        tmp = REG_SET_FIELD(tmp, HDMI_INFOFRAME_CONTROL0, HDMI_AVI_INFO_SEND, 1);
        /* required for audio info values to be updated */
        tmp = REG_SET_FIELD(tmp, HDMI_INFOFRAME_CONTROL0, HDMI_AVI_INFO_CONT, 1);
        WREG32(mmHDMI_INFOFRAME_CONTROL0 + dig->afmt->offset, tmp);

        tmp = RREG32(mmHDMI_INFOFRAME_CONTROL1 + dig->afmt->offset);
        tmp = REG_SET_FIELD(tmp, HDMI_INFOFRAME_CONTROL1, HDMI_AVI_INFO_LINE, 2);
        WREG32(mmHDMI_INFOFRAME_CONTROL1 + dig->afmt->offset, tmp);

        tmp = RREG32(mmAFMT_AUDIO_PACKET_CONTROL + dig->afmt->offset);
        /* send audio packets */
        tmp = REG_SET_FIELD(tmp, AFMT_AUDIO_PACKET_CONTROL, AFMT_AUDIO_SAMPLE_SEND, 1);
        WREG32(mmAFMT_AUDIO_PACKET_CONTROL + dig->afmt->offset, tmp);

        WREG32(mmAFMT_RAMP_CONTROL0 + dig->afmt->offset, 0x00FFFFFF);
        WREG32(mmAFMT_RAMP_CONTROL1 + dig->afmt->offset, 0x007FFFFF);
        WREG32(mmAFMT_RAMP_CONTROL2 + dig->afmt->offset, 0x00000001);
        WREG32(mmAFMT_RAMP_CONTROL3 + dig->afmt->offset, 0x00000001);

        /* enable audio after to setting up hw */
        dce_v10_0_audio_enable(adev, dig->afmt->pin, true);
}

static void dce_v10_0_afmt_enable(struct drm_encoder *encoder, bool enable)
{
        struct drm_device *dev = encoder->dev;
        struct amdgpu_device *adev = dev->dev_private;
        struct amdgpu_encoder *amdgpu_encoder = to_amdgpu_encoder(encoder);
        struct amdgpu_encoder_atom_dig *dig = amdgpu_encoder->enc_priv;

        if (!dig || !dig->afmt)
                return;

        /* Silent, r600_hdmi_enable will raise WARN for us */
        if (enable && dig->afmt->enabled)
                return;
        if (!enable && !dig->afmt->enabled)
                return;

        if (!enable && dig->afmt->pin) {
                dce_v10_0_audio_enable(adev, dig->afmt->pin, false);
                dig->afmt->pin = NULL;
        }

        dig->afmt->enabled = enable;

        DRM_DEBUG("%sabling AFMT interface @ 0x%04X for encoder 0x%x\n",
                  enable ? "En" : "Dis", dig->afmt->offset, amdgpu_encoder->encoder_id);
}

static void dce_v10_0_afmt_init(struct amdgpu_device *adev)
{
        int i;

        for (i = 0; i < adev->mode_info.num_dig; i++)
                adev->mode_info.afmt[i] = NULL;

        /* DCE10 has audio blocks tied to DIG encoders */
        for (i = 0; i < adev->mode_info.num_dig; i++) {
                adev->mode_info.afmt[i] = kzalloc(sizeof(struct amdgpu_afmt), GFP_KERNEL);
                if (adev->mode_info.afmt[i]) {
                        adev->mode_info.afmt[i]->offset = dig_offsets[i];
                        adev->mode_info.afmt[i]->id = i;
                }
        }
}

static void dce_v10_0_afmt_fini(struct amdgpu_device *adev)
{
        int i;

        for (i = 0; i < adev->mode_info.num_dig; i++) {
                kfree(adev->mode_info.afmt[i]);
                adev->mode_info.afmt[i] = NULL;
        }
}

static const u32 vga_control_regs[6] =
{
        mmD1VGA_CONTROL,
        mmD2VGA_CONTROL,
        mmD3VGA_CONTROL,
        mmD4VGA_CONTROL,
        mmD5VGA_CONTROL,
        mmD6VGA_CONTROL,
};

static void dce_v10_0_vga_enable(struct drm_crtc *crtc, bool enable)
{
        struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc);
        struct drm_device *dev = crtc->dev;
        struct amdgpu_device *adev = dev->dev_private;
        u32 vga_control;

        vga_control = RREG32(vga_control_regs[amdgpu_crtc->crtc_id]) & ~1;
        if (enable)
                WREG32(vga_control_regs[amdgpu_crtc->crtc_id], vga_control | 1);
        else
                WREG32(vga_control_regs[amdgpu_crtc->crtc_id], vga_control);
}

static void dce_v10_0_grph_enable(struct drm_crtc *crtc, bool enable)
{
        struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc);
        struct drm_device *dev = crtc->dev;
        struct amdgpu_device *adev = dev->dev_private;

        if (enable)
                WREG32(mmGRPH_ENABLE + amdgpu_crtc->crtc_offset, 1);
        else
                WREG32(mmGRPH_ENABLE + amdgpu_crtc->crtc_offset, 0);
}

static int dce_v10_0_crtc_do_set_base(struct drm_crtc *crtc,
                                     struct drm_framebuffer *fb,
                                     int x, int y, int atomic)
{
        struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc);
        struct drm_device *dev = crtc->dev;
        struct amdgpu_device *adev = dev->dev_private;
        struct amdgpu_framebuffer *amdgpu_fb;
        struct drm_framebuffer *target_fb;
        struct drm_gem_object *obj;
        struct amdgpu_bo *rbo;
        uint64_t fb_location, tiling_flags;
        uint32_t fb_format, fb_pitch_pixels;
        u32 fb_swap = REG_SET_FIELD(0, GRPH_SWAP_CNTL, GRPH_ENDIAN_SWAP, ENDIAN_NONE);
        u32 pipe_config;
        u32 tmp, viewport_w, viewport_h;
        int r;
        bool bypass_lut = false;

        /* no fb bound */
        if (!atomic && !crtc->primary->fb) {
                DRM_DEBUG_KMS("No FB bound\n");
                return 0;
        }

        if (atomic) {
                amdgpu_fb = to_amdgpu_framebuffer(fb);
                target_fb = fb;
        }
        else {
                amdgpu_fb = to_amdgpu_framebuffer(crtc->primary->fb);
                target_fb = crtc->primary->fb;
        }

        /* If atomic, assume fb object is pinned & idle & fenced and
         * just update base pointers
         */
        obj = amdgpu_fb->obj;
        rbo = gem_to_amdgpu_bo(obj);
        r = amdgpu_bo_reserve(rbo, false);
        if (unlikely(r != 0))
                return r;

        if (atomic)
                fb_location = amdgpu_bo_gpu_offset(rbo);
        else {
                r = amdgpu_bo_pin(rbo, AMDGPU_GEM_DOMAIN_VRAM, &fb_location);
                if (unlikely(r != 0)) {
                        amdgpu_bo_unreserve(rbo);
                        return -EINVAL;
                }
        }

        amdgpu_bo_get_tiling_flags(rbo, &tiling_flags);
        amdgpu_bo_unreserve(rbo);

        pipe_config = AMDGPU_TILING_GET(tiling_flags, PIPE_CONFIG);

        switch (target_fb->pixel_format) {
        case DRM_FORMAT_C8:
                fb_format = REG_SET_FIELD(0, GRPH_CONTROL, GRPH_DEPTH, 0);
                fb_format = REG_SET_FIELD(fb_format, GRPH_CONTROL, GRPH_FORMAT, 0);
                break;
        case DRM_FORMAT_XRGB4444:
        case DRM_FORMAT_ARGB4444:
                fb_format = REG_SET_FIELD(0, GRPH_CONTROL, GRPH_DEPTH, 1);
                fb_format = REG_SET_FIELD(fb_format, GRPH_CONTROL, GRPH_FORMAT, 2);
#ifdef __BIG_ENDIAN
                fb_swap = REG_SET_FIELD(fb_swap, GRPH_SWAP_CNTL, GRPH_ENDIAN_SWAP,
                                        ENDIAN_8IN16);
#endif
                break;
        case DRM_FORMAT_XRGB1555:
        case DRM_FORMAT_ARGB1555:
                fb_format = REG_SET_FIELD(0, GRPH_CONTROL, GRPH_DEPTH, 1);
                fb_format = REG_SET_FIELD(fb_format, GRPH_CONTROL, GRPH_FORMAT, 0);
#ifdef __BIG_ENDIAN
                fb_swap = REG_SET_FIELD(fb_swap, GRPH_SWAP_CNTL, GRPH_ENDIAN_SWAP,
                                        ENDIAN_8IN16);
#endif
                break;
        case DRM_FORMAT_BGRX5551:
        case DRM_FORMAT_BGRA5551:
                fb_format = REG_SET_FIELD(0, GRPH_CONTROL, GRPH_DEPTH, 1);
                fb_format = REG_SET_FIELD(fb_format, GRPH_CONTROL, GRPH_FORMAT, 5);
#ifdef __BIG_ENDIAN
                fb_swap = REG_SET_FIELD(fb_swap, GRPH_SWAP_CNTL, GRPH_ENDIAN_SWAP,
                                        ENDIAN_8IN16);
#endif
                break;
        case DRM_FORMAT_RGB565:
                fb_format = REG_SET_FIELD(0, GRPH_CONTROL, GRPH_DEPTH, 1);
                fb_format = REG_SET_FIELD(fb_format, GRPH_CONTROL, GRPH_FORMAT, 1);
#ifdef __BIG_ENDIAN
                fb_swap = REG_SET_FIELD(fb_swap, GRPH_SWAP_CNTL, GRPH_ENDIAN_SWAP,
                                        ENDIAN_8IN16);
#endif
                break;
        case DRM_FORMAT_XRGB8888:
        case DRM_FORMAT_ARGB8888:
                fb_format = REG_SET_FIELD(0, GRPH_CONTROL, GRPH_DEPTH, 2);
                fb_format = REG_SET_FIELD(fb_format, GRPH_CONTROL, GRPH_FORMAT, 0);
#ifdef __BIG_ENDIAN
                fb_swap = REG_SET_FIELD(fb_swap, GRPH_SWAP_CNTL, GRPH_ENDIAN_SWAP,
                                        ENDIAN_8IN32);
#endif
                break;
        case DRM_FORMAT_XRGB2101010:
        case DRM_FORMAT_ARGB2101010:
                fb_format = REG_SET_FIELD(0, GRPH_CONTROL, GRPH_DEPTH, 2);
                fb_format = REG_SET_FIELD(fb_format, GRPH_CONTROL, GRPH_FORMAT, 1);
#ifdef __BIG_ENDIAN
                fb_swap = REG_SET_FIELD(fb_swap, GRPH_SWAP_CNTL, GRPH_ENDIAN_SWAP,
                                        ENDIAN_8IN32);
#endif
                /* Greater 8 bpc fb needs to bypass hw-lut to retain precision */
                bypass_lut = true;
                break;
        case DRM_FORMAT_BGRX1010102:
        case DRM_FORMAT_BGRA1010102:
                fb_format = REG_SET_FIELD(0, GRPH_CONTROL, GRPH_DEPTH, 2);
                fb_format = REG_SET_FIELD(fb_format, GRPH_CONTROL, GRPH_FORMAT, 4);
#ifdef __BIG_ENDIAN
                fb_swap = REG_SET_FIELD(fb_swap, GRPH_SWAP_CNTL, GRPH_ENDIAN_SWAP,
                                        ENDIAN_8IN32);
#endif
                /* Greater 8 bpc fb needs to bypass hw-lut to retain precision */
                bypass_lut = true;
                break;
        default:
                DRM_ERROR("Unsupported screen format %s\n",
                        drm_get_format_name(target_fb->pixel_format));
                return -EINVAL;
        }

        if (AMDGPU_TILING_GET(tiling_flags, ARRAY_MODE) == ARRAY_2D_TILED_THIN1) {
                unsigned bankw, bankh, mtaspect, tile_split, num_banks;

                bankw = AMDGPU_TILING_GET(tiling_flags, BANK_WIDTH);
                bankh = AMDGPU_TILING_GET(tiling_flags, BANK_HEIGHT);
                mtaspect = AMDGPU_TILING_GET(tiling_flags, MACRO_TILE_ASPECT);
                tile_split = AMDGPU_TILING_GET(tiling_flags, TILE_SPLIT);
                num_banks = AMDGPU_TILING_GET(tiling_flags, NUM_BANKS);

                fb_format = REG_SET_FIELD(fb_format, GRPH_CONTROL, GRPH_NUM_BANKS, num_banks);
                fb_format = REG_SET_FIELD(fb_format, GRPH_CONTROL, GRPH_ARRAY_MODE,
                                          ARRAY_2D_TILED_THIN1);
                fb_format = REG_SET_FIELD(fb_format, GRPH_CONTROL, GRPH_TILE_SPLIT,
                                          tile_split);
                fb_format = REG_SET_FIELD(fb_format, GRPH_CONTROL, GRPH_BANK_WIDTH, bankw);
                fb_format = REG_SET_FIELD(fb_format, GRPH_CONTROL, GRPH_BANK_HEIGHT, bankh);
                fb_format = REG_SET_FIELD(fb_format, GRPH_CONTROL, GRPH_MACRO_TILE_ASPECT,
                                          mtaspect);
                fb_format = REG_SET_FIELD(fb_format, GRPH_CONTROL, GRPH_MICRO_TILE_MODE,
                                          ADDR_SURF_MICRO_TILING_DISPLAY);
        } else if (AMDGPU_TILING_GET(tiling_flags, ARRAY_MODE) == ARRAY_1D_TILED_THIN1) {
                fb_format = REG_SET_FIELD(fb_format, GRPH_CONTROL, GRPH_ARRAY_MODE,
                                          ARRAY_1D_TILED_THIN1);
        }

        fb_format = REG_SET_FIELD(fb_format, GRPH_CONTROL, GRPH_PIPE_CONFIG,
                                  pipe_config);

        dce_v10_0_vga_enable(crtc, false);

        WREG32(mmGRPH_PRIMARY_SURFACE_ADDRESS_HIGH + amdgpu_crtc->crtc_offset,
               upper_32_bits(fb_location));
        WREG32(mmGRPH_SECONDARY_SURFACE_ADDRESS_HIGH + amdgpu_crtc->crtc_offset,
               upper_32_bits(fb_location));
        WREG32(mmGRPH_PRIMARY_SURFACE_ADDRESS + amdgpu_crtc->crtc_offset,
               (u32)fb_location & GRPH_PRIMARY_SURFACE_ADDRESS__GRPH_PRIMARY_SURFACE_ADDRESS_MASK);
        WREG32(mmGRPH_SECONDARY_SURFACE_ADDRESS + amdgpu_crtc->crtc_offset,
               (u32) fb_location & GRPH_SECONDARY_SURFACE_ADDRESS__GRPH_SECONDARY_SURFACE_ADDRESS_MASK);
        WREG32(mmGRPH_CONTROL + amdgpu_crtc->crtc_offset, fb_format);
        WREG32(mmGRPH_SWAP_CNTL + amdgpu_crtc->crtc_offset, fb_swap);

        /*
         * The LUT only has 256 slots for indexing by a 8 bpc fb. Bypass the LUT
         * for > 8 bpc scanout to avoid truncation of fb indices to 8 msb's, to
         * retain the full precision throughout the pipeline.
         */
        tmp = RREG32(mmGRPH_LUT_10BIT_BYPASS + amdgpu_crtc->crtc_offset);
        if (bypass_lut)
                tmp = REG_SET_FIELD(tmp, GRPH_LUT_10BIT_BYPASS, GRPH_LUT_10BIT_BYPASS_EN, 1);
        else
                tmp = REG_SET_FIELD(tmp, GRPH_LUT_10BIT_BYPASS, GRPH_LUT_10BIT_BYPASS_EN, 0);
        WREG32(mmGRPH_LUT_10BIT_BYPASS + amdgpu_crtc->crtc_offset, tmp);

        if (bypass_lut)
                DRM_DEBUG_KMS("Bypassing hardware LUT due to 10 bit fb scanout.\n");

        WREG32(mmGRPH_SURFACE_OFFSET_X + amdgpu_crtc->crtc_offset, 0);
        WREG32(mmGRPH_SURFACE_OFFSET_Y + amdgpu_crtc->crtc_offset, 0);
        WREG32(mmGRPH_X_START + amdgpu_crtc->crtc_offset, 0);
        WREG32(mmGRPH_Y_START + amdgpu_crtc->crtc_offset, 0);
        WREG32(mmGRPH_X_END + amdgpu_crtc->crtc_offset, target_fb->width);
        WREG32(mmGRPH_Y_END + amdgpu_crtc->crtc_offset, target_fb->height);

        fb_pitch_pixels = target_fb->pitches[0] / (target_fb->bits_per_pixel / 8);
        WREG32(mmGRPH_PITCH + amdgpu_crtc->crtc_offset, fb_pitch_pixels);

        dce_v10_0_grph_enable(crtc, true);

        WREG32(mmLB_DESKTOP_HEIGHT + amdgpu_crtc->crtc_offset,
               target_fb->height);

        x &= ~3;
        y &= ~1;
        WREG32(mmVIEWPORT_START + amdgpu_crtc->crtc_offset,
               (x << 16) | y);
        viewport_w = crtc->mode.hdisplay;
        viewport_h = (crtc->mode.vdisplay + 1) & ~1;
        WREG32(mmVIEWPORT_SIZE + amdgpu_crtc->crtc_offset,
               (viewport_w << 16) | viewport_h);

        /* pageflip setup */
        /* make sure flip is at vb rather than hb */
        tmp = RREG32(mmGRPH_FLIP_CONTROL + amdgpu_crtc->crtc_offset);
        tmp = REG_SET_FIELD(tmp, GRPH_FLIP_CONTROL,
                            GRPH_SURFACE_UPDATE_H_RETRACE_EN, 0);
        WREG32(mmGRPH_FLIP_CONTROL + amdgpu_crtc->crtc_offset, tmp);

        /* set pageflip to happen only at start of vblank interval (front porch) */
        WREG32(mmMASTER_UPDATE_MODE + amdgpu_crtc->crtc_offset, 3);

        if (!atomic && fb && fb != crtc->primary->fb) {
                amdgpu_fb = to_amdgpu_framebuffer(fb);
                rbo = gem_to_amdgpu_bo(amdgpu_fb->obj);
                r = amdgpu_bo_reserve(rbo, false);
                if (unlikely(r != 0))
                        return r;
                amdgpu_bo_unpin(rbo);
                amdgpu_bo_unreserve(rbo);
        }

        /* Bytes per pixel may have changed */
        dce_v10_0_bandwidth_update(adev);

        return 0;
}

static void dce_v10_0_set_interleave(struct drm_crtc *crtc,
                                     struct drm_display_mode *mode)
{
        struct drm_device *dev = crtc->dev;
        struct amdgpu_device *adev = dev->dev_private;
        struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc);
        u32 tmp;

        tmp = RREG32(mmLB_DATA_FORMAT + amdgpu_crtc->crtc_offset);
        if (mode->flags & DRM_MODE_FLAG_INTERLACE)
                tmp = REG_SET_FIELD(tmp, LB_DATA_FORMAT, INTERLEAVE_EN, 1);
        else
                tmp = REG_SET_FIELD(tmp, LB_DATA_FORMAT, INTERLEAVE_EN, 0);
        WREG32(mmLB_DATA_FORMAT + amdgpu_crtc->crtc_offset, tmp);
}

static void dce_v10_0_crtc_load_lut(struct drm_crtc *crtc)
{
        struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc);
        struct drm_device *dev = crtc->dev;
        struct amdgpu_device *adev = dev->dev_private;
        int i;
        u32 tmp;

        DRM_DEBUG_KMS("%d\n", amdgpu_crtc->crtc_id);

        tmp = RREG32(mmINPUT_CSC_CONTROL + amdgpu_crtc->crtc_offset);
        tmp = REG_SET_FIELD(tmp, INPUT_CSC_CONTROL, INPUT_CSC_GRPH_MODE, 0);
        tmp = REG_SET_FIELD(tmp, INPUT_CSC_CONTROL, INPUT_CSC_OVL_MODE, 0);
        WREG32(mmINPUT_CSC_CONTROL + amdgpu_crtc->crtc_offset, tmp);

        tmp = RREG32(mmPRESCALE_GRPH_CONTROL + amdgpu_crtc->crtc_offset);
        tmp = REG_SET_FIELD(tmp, PRESCALE_GRPH_CONTROL, GRPH_PRESCALE_BYPASS, 1);
        WREG32(mmPRESCALE_GRPH_CONTROL + amdgpu_crtc->crtc_offset, tmp);

        tmp = RREG32(mmPRESCALE_OVL_CONTROL + amdgpu_crtc->crtc_offset);
        tmp = REG_SET_FIELD(tmp, PRESCALE_OVL_CONTROL, OVL_PRESCALE_BYPASS, 1);
        WREG32(mmPRESCALE_OVL_CONTROL + amdgpu_crtc->crtc_offset, tmp);

        tmp = RREG32(mmINPUT_GAMMA_CONTROL + amdgpu_crtc->crtc_offset);
        tmp = REG_SET_FIELD(tmp, INPUT_GAMMA_CONTROL, GRPH_INPUT_GAMMA_MODE, 0);
        tmp = REG_SET_FIELD(tmp, INPUT_GAMMA_CONTROL, OVL_INPUT_GAMMA_MODE, 0);
        WREG32(mmINPUT_GAMMA_CONTROL + amdgpu_crtc->crtc_offset, tmp);

        WREG32(mmDC_LUT_CONTROL + amdgpu_crtc->crtc_offset, 0);

        WREG32(mmDC_LUT_BLACK_OFFSET_BLUE + amdgpu_crtc->crtc_offset, 0);
        WREG32(mmDC_LUT_BLACK_OFFSET_GREEN + amdgpu_crtc->crtc_offset, 0);
        WREG32(mmDC_LUT_BLACK_OFFSET_RED + amdgpu_crtc->crtc_offset, 0);

        WREG32(mmDC_LUT_WHITE_OFFSET_BLUE + amdgpu_crtc->crtc_offset, 0xffff);
        WREG32(mmDC_LUT_WHITE_OFFSET_GREEN + amdgpu_crtc->crtc_offset, 0xffff);
        WREG32(mmDC_LUT_WHITE_OFFSET_RED + amdgpu_crtc->crtc_offset, 0xffff);

        WREG32(mmDC_LUT_RW_MODE + amdgpu_crtc->crtc_offset, 0);
        WREG32(mmDC_LUT_WRITE_EN_MASK + amdgpu_crtc->crtc_offset, 0x00000007);

        WREG32(mmDC_LUT_RW_INDEX + amdgpu_crtc->crtc_offset, 0);
        for (i = 0; i < 256; i++) {
                WREG32(mmDC_LUT_30_COLOR + amdgpu_crtc->crtc_offset,
                       (amdgpu_crtc->lut_r[i] << 20) |
                       (amdgpu_crtc->lut_g[i] << 10) |
                       (amdgpu_crtc->lut_b[i] << 0));
        }

        tmp = RREG32(mmDEGAMMA_CONTROL + amdgpu_crtc->crtc_offset);
        tmp = REG_SET_FIELD(tmp, DEGAMMA_CONTROL, GRPH_DEGAMMA_MODE, 0);
        tmp = REG_SET_FIELD(tmp, DEGAMMA_CONTROL, OVL_DEGAMMA_MODE, 0);
        tmp = REG_SET_FIELD(tmp, DEGAMMA_CONTROL, CURSOR_DEGAMMA_MODE, 0);
        WREG32(mmDEGAMMA_CONTROL + amdgpu_crtc->crtc_offset, tmp);

        tmp = RREG32(mmGAMUT_REMAP_CONTROL + amdgpu_crtc->crtc_offset);
        tmp = REG_SET_FIELD(tmp, GAMUT_REMAP_CONTROL, GRPH_GAMUT_REMAP_MODE, 0);
        tmp = REG_SET_FIELD(tmp, GAMUT_REMAP_CONTROL, OVL_GAMUT_REMAP_MODE, 0);
        WREG32(mmGAMUT_REMAP_CONTROL + amdgpu_crtc->crtc_offset, tmp);

        tmp = RREG32(mmREGAMMA_CONTROL + amdgpu_crtc->crtc_offset);
        tmp = REG_SET_FIELD(tmp, REGAMMA_CONTROL, GRPH_REGAMMA_MODE, 0);
        tmp = REG_SET_FIELD(tmp, REGAMMA_CONTROL, OVL_REGAMMA_MODE, 0);
        WREG32(mmREGAMMA_CONTROL + amdgpu_crtc->crtc_offset, tmp);

        tmp = RREG32(mmOUTPUT_CSC_CONTROL + amdgpu_crtc->crtc_offset);
        tmp = REG_SET_FIELD(tmp, OUTPUT_CSC_CONTROL, OUTPUT_CSC_GRPH_MODE, 0);
        tmp = REG_SET_FIELD(tmp, OUTPUT_CSC_CONTROL, OUTPUT_CSC_OVL_MODE, 0);
        WREG32(mmOUTPUT_CSC_CONTROL + amdgpu_crtc->crtc_offset, tmp);

        /* XXX match this to the depth of the crtc fmt block, move to modeset? */
        WREG32(mmDENORM_CONTROL + amdgpu_crtc->crtc_offset, 0);
        /* XXX this only needs to be programmed once per crtc at startup,
         * not sure where the best place for it is
         */
        tmp = RREG32(mmALPHA_CONTROL + amdgpu_crtc->crtc_offset);
        tmp = REG_SET_FIELD(tmp, ALPHA_CONTROL, CURSOR_ALPHA_BLND_ENA, 1);
        WREG32(mmALPHA_CONTROL + amdgpu_crtc->crtc_offset, tmp);
}

static int dce_v10_0_pick_dig_encoder(struct drm_encoder *encoder)
{
        struct amdgpu_encoder *amdgpu_encoder = to_amdgpu_encoder(encoder);
        struct amdgpu_encoder_atom_dig *dig = amdgpu_encoder->enc_priv;

        switch (amdgpu_encoder->encoder_id) {
        case ENCODER_OBJECT_ID_INTERNAL_UNIPHY:
                if (dig->linkb)
                        return 1;
                else
                        return 0;
                break;
        case ENCODER_OBJECT_ID_INTERNAL_UNIPHY1:
                if (dig->linkb)
                        return 3;
                else
                        return 2;
                break;
        case ENCODER_OBJECT_ID_INTERNAL_UNIPHY2:
                if (dig->linkb)
                        return 5;
                else
                        return 4;
                break;
        case ENCODER_OBJECT_ID_INTERNAL_UNIPHY3:
                return 6;
                break;
        default:
                DRM_ERROR("invalid encoder_id: 0x%x\n", amdgpu_encoder->encoder_id);
                return 0;
        }
}

/**
 * dce_v10_0_pick_pll - Allocate a PPLL for use by the crtc.
 *
 * @crtc: drm crtc
 *
 * Returns the PPLL (Pixel PLL) to be used by the crtc.  For DP monitors
 * a single PPLL can be used for all DP crtcs/encoders.  For non-DP
 * monitors a dedicated PPLL must be used.  If a particular board has
 * an external DP PLL, return ATOM_PPLL_INVALID to skip PLL programming
 * as there is no need to program the PLL itself.  If we are not able to
 * allocate a PLL, return ATOM_PPLL_INVALID to skip PLL programming to
 * avoid messing up an existing monitor.
 *
 * Asic specific PLL information
 *
 * DCE 10.x
 * Tonga
 * - PPLL1, PPLL2 are available for all UNIPHY (both DP and non-DP)
 * CI
 * - PPLL0, PPLL1, PPLL2 are available for all UNIPHY (both DP and non-DP) and DAC
 *
 */
static u32 dce_v10_0_pick_pll(struct drm_crtc *crtc)
{
        struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc);
        struct drm_device *dev = crtc->dev;
        struct amdgpu_device *adev = dev->dev_private;
        u32 pll_in_use;
        int pll;

        if (ENCODER_MODE_IS_DP(amdgpu_atombios_encoder_get_encoder_mode(amdgpu_crtc->encoder))) {
                if (adev->clock.dp_extclk)
                        /* skip PPLL programming if using ext clock */
                        return ATOM_PPLL_INVALID;
                else {
                        /* use the same PPLL for all DP monitors */
                        pll = amdgpu_pll_get_shared_dp_ppll(crtc);
                        if (pll != ATOM_PPLL_INVALID)
                                return pll;
                }
        } else {
                /* use the same PPLL for all monitors with the same clock */
                pll = amdgpu_pll_get_shared_nondp_ppll(crtc);
                if (pll != ATOM_PPLL_INVALID)
                        return pll;
        }

        /* DCE10 has PPLL0, PPLL1, and PPLL2 */
        pll_in_use = amdgpu_pll_get_use_mask(crtc);
        if (!(pll_in_use & (1 << ATOM_PPLL2)))
                return ATOM_PPLL2;
        if (!(pll_in_use & (1 << ATOM_PPLL1)))
                return ATOM_PPLL1;
        if (!(pll_in_use & (1 << ATOM_PPLL0)))
                return ATOM_PPLL0;
        DRM_ERROR("unable to allocate a PPLL\n");
        return ATOM_PPLL_INVALID;
}

static void dce_v10_0_lock_cursor(struct drm_crtc *crtc, bool lock)
{
        struct amdgpu_device *adev = crtc->dev->dev_private;
        struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc);
        uint32_t cur_lock;

        cur_lock = RREG32(mmCUR_UPDATE + amdgpu_crtc->crtc_offset);
        if (lock)
                cur_lock = REG_SET_FIELD(cur_lock, CUR_UPDATE, CURSOR_UPDATE_LOCK, 1);
        else
                cur_lock = REG_SET_FIELD(cur_lock, CUR_UPDATE, CURSOR_UPDATE_LOCK, 0);
        WREG32(mmCUR_UPDATE + amdgpu_crtc->crtc_offset, cur_lock);
}

static void dce_v10_0_hide_cursor(struct drm_crtc *crtc)
{
        struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc);
        struct amdgpu_device *adev = crtc->dev->dev_private;
        u32 tmp;

        tmp = RREG32_IDX(mmCUR_CONTROL + amdgpu_crtc->crtc_offset);
        tmp = REG_SET_FIELD(tmp, CUR_CONTROL, CURSOR_EN, 0);
        WREG32_IDX(mmCUR_CONTROL + amdgpu_crtc->crtc_offset, tmp);
}

static void dce_v10_0_show_cursor(struct drm_crtc *crtc)
{
        struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc);
        struct amdgpu_device *adev = crtc->dev->dev_private;
        u32 tmp;

        tmp = RREG32_IDX(mmCUR_CONTROL + amdgpu_crtc->crtc_offset);
        tmp = REG_SET_FIELD(tmp, CUR_CONTROL, CURSOR_EN, 1);
        tmp = REG_SET_FIELD(tmp, CUR_CONTROL, CURSOR_MODE, 2);
        WREG32_IDX(mmCUR_CONTROL + amdgpu_crtc->crtc_offset, tmp);
}

static void dce_v10_0_set_cursor(struct drm_crtc *crtc, struct drm_gem_object *obj,
                              uint64_t gpu_addr)
{
        struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc);
        struct amdgpu_device *adev = crtc->dev->dev_private;

        WREG32(mmCUR_SURFACE_ADDRESS_HIGH + amdgpu_crtc->crtc_offset,
               upper_32_bits(gpu_addr));
        WREG32(mmCUR_SURFACE_ADDRESS + amdgpu_crtc->crtc_offset,
               lower_32_bits(gpu_addr));
}

static int dce_v10_0_crtc_cursor_move(struct drm_crtc *crtc,
                                     int x, int y)
{
        struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc);
        struct amdgpu_device *adev = crtc->dev->dev_private;
        int xorigin = 0, yorigin = 0;

        /* avivo cursor are offset into the total surface */
        x += crtc->x;
        y += crtc->y;
        DRM_DEBUG("x %d y %d c->x %d c->y %d\n", x, y, crtc->x, crtc->y);

        if (x < 0) {
                xorigin = min(-x, amdgpu_crtc->max_cursor_width - 1);
                x = 0;
        }
        if (y < 0) {
                yorigin = min(-y, amdgpu_crtc->max_cursor_height - 1);
                y = 0;
        }

        dce_v10_0_lock_cursor(crtc, true);
        WREG32(mmCUR_POSITION + amdgpu_crtc->crtc_offset, (x << 16) | y);
        WREG32(mmCUR_HOT_SPOT + amdgpu_crtc->crtc_offset, (xorigin << 16) | yorigin);
        WREG32(mmCUR_SIZE + amdgpu_crtc->crtc_offset,
               ((amdgpu_crtc->cursor_width - 1) << 16) | (amdgpu_crtc->cursor_height - 1));
        dce_v10_0_lock_cursor(crtc, false);

        return 0;
}

static int dce_v10_0_crtc_cursor_set(struct drm_crtc *crtc,
                                    struct drm_file *file_priv,
                                    uint32_t handle,
                                    uint32_t width,
                                    uint32_t height)
{
        struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc);
        struct drm_gem_object *obj;
        struct amdgpu_bo *robj;
        uint64_t gpu_addr;
        int ret;

        if (!handle) {
                /* turn off cursor */
                dce_v10_0_hide_cursor(crtc);
                obj = NULL;
                goto unpin;
        }

        if ((width > amdgpu_crtc->max_cursor_width) ||
            (height > amdgpu_crtc->max_cursor_height)) {
                DRM_ERROR("bad cursor width or height %d x %d\n", width, height);
                return -EINVAL;
        }

        obj = drm_gem_object_lookup(crtc->dev, file_priv, handle);
        if (!obj) {
                DRM_ERROR("Cannot find cursor object %x for crtc %d\n", handle, amdgpu_crtc->crtc_id);
                return -ENOENT;
        }

        robj = gem_to_amdgpu_bo(obj);
        ret = amdgpu_bo_reserve(robj, false);
        if (unlikely(ret != 0))
                goto fail;
        ret = amdgpu_bo_pin_restricted(robj, AMDGPU_GEM_DOMAIN_VRAM,
                                       0, 0, &gpu_addr);
        amdgpu_bo_unreserve(robj);
        if (ret)
                goto fail;

        amdgpu_crtc->cursor_width = width;
        amdgpu_crtc->cursor_height = height;

        dce_v10_0_lock_cursor(crtc, true);
        dce_v10_0_set_cursor(crtc, obj, gpu_addr);
        dce_v10_0_show_cursor(crtc);
        dce_v10_0_lock_cursor(crtc, false);

unpin:
        if (amdgpu_crtc->cursor_bo) {
                robj = gem_to_amdgpu_bo(amdgpu_crtc->cursor_bo);
                ret = amdgpu_bo_reserve(robj, false);
                if (likely(ret == 0)) {
                        amdgpu_bo_unpin(robj);
                        amdgpu_bo_unreserve(robj);
                }
                drm_gem_object_unreference_unlocked(amdgpu_crtc->cursor_bo);
        }

        amdgpu_crtc->cursor_bo = obj;
        return 0;
fail:
        drm_gem_object_unreference_unlocked(obj);

        return ret;
}

static void dce_v10_0_crtc_gamma_set(struct drm_crtc *crtc, u16 *red, u16 *green,
                                    u16 *blue, uint32_t start, uint32_t size)
{
        struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc);
        int end = (start + size > 256) ? 256 : start + size, i;

        /* userspace palettes are always correct as is */
        for (i = start; i < end; i++) {
                amdgpu_crtc->lut_r[i] = red[i] >> 6;
                amdgpu_crtc->lut_g[i] = green[i] >> 6;
                amdgpu_crtc->lut_b[i] = blue[i] >> 6;
        }
        dce_v10_0_crtc_load_lut(crtc);
}

static void dce_v10_0_crtc_destroy(struct drm_crtc *crtc)
{
        struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc);

        drm_crtc_cleanup(crtc);
        destroy_workqueue(amdgpu_crtc->pflip_queue);
        kfree(amdgpu_crtc);
}

static const struct drm_crtc_funcs dce_v10_0_crtc_funcs = {
        .cursor_set = dce_v10_0_crtc_cursor_set,
        .cursor_move = dce_v10_0_crtc_cursor_move,
        .gamma_set = dce_v10_0_crtc_gamma_set,
        .set_config = amdgpu_crtc_set_config,
        .destroy = dce_v10_0_crtc_destroy,
        .page_flip = amdgpu_crtc_page_flip,
};

static void dce_v10_0_crtc_dpms(struct drm_crtc *crtc, int mode)
{
        struct drm_device *dev = crtc->dev;
        struct amdgpu_device *adev = dev->dev_private;
        struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc);
        unsigned type;

        switch (mode) {
        case DRM_MODE_DPMS_ON:
                amdgpu_crtc->enabled = true;
                amdgpu_atombios_crtc_enable(crtc, ATOM_ENABLE);
                dce_v10_0_vga_enable(crtc, true);
                amdgpu_atombios_crtc_blank(crtc, ATOM_DISABLE);
                dce_v10_0_vga_enable(crtc, false);
                /* Make sure VBLANK interrupt is still enabled */
                type = amdgpu_crtc_idx_to_irq_type(adev, amdgpu_crtc->crtc_id);
                amdgpu_irq_update(adev, &adev->crtc_irq, type);
                drm_vblank_post_modeset(dev, amdgpu_crtc->crtc_id);
                dce_v10_0_crtc_load_lut(crtc);
                break;
        case DRM_MODE_DPMS_STANDBY:
        case DRM_MODE_DPMS_SUSPEND:
        case DRM_MODE_DPMS_OFF:
                drm_vblank_pre_modeset(dev, amdgpu_crtc->crtc_id);
                if (amdgpu_crtc->enabled) {
                        dce_v10_0_vga_enable(crtc, true);
                        amdgpu_atombios_crtc_blank(crtc, ATOM_ENABLE);
                        dce_v10_0_vga_enable(crtc, false);
                }
                amdgpu_atombios_crtc_enable(crtc, ATOM_DISABLE);
                amdgpu_crtc->enabled = false;
                break;
        }
        /* adjust pm to dpms */
        amdgpu_pm_compute_clocks(adev);
}

static void dce_v10_0_crtc_prepare(struct drm_crtc *crtc)
{
        /* disable crtc pair power gating before programming */
        amdgpu_atombios_crtc_powergate(crtc, ATOM_DISABLE);
        amdgpu_atombios_crtc_lock(crtc, ATOM_ENABLE);
        dce_v10_0_crtc_dpms(crtc, DRM_MODE_DPMS_OFF);
}

static void dce_v10_0_crtc_commit(struct drm_crtc *crtc)
{
        dce_v10_0_crtc_dpms(crtc, DRM_MODE_DPMS_ON);
        amdgpu_atombios_crtc_lock(crtc, ATOM_DISABLE);
}

static void dce_v10_0_crtc_disable(struct drm_crtc *crtc)
{
        struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc);
        struct drm_device *dev = crtc->dev;
        struct amdgpu_device *adev = dev->dev_private;
        struct amdgpu_atom_ss ss;
        int i;

        dce_v10_0_crtc_dpms(crtc, DRM_MODE_DPMS_OFF);
        if (crtc->primary->fb) {
                int r;
                struct amdgpu_framebuffer *amdgpu_fb;
                struct amdgpu_bo *rbo;

                amdgpu_fb = to_amdgpu_framebuffer(crtc->primary->fb);
                rbo = gem_to_amdgpu_bo(amdgpu_fb->obj);
                r = amdgpu_bo_reserve(rbo, false);
                if (unlikely(r))
                        DRM_ERROR("failed to reserve rbo before unpin\n");
                else {
                        amdgpu_bo_unpin(rbo);
                        amdgpu_bo_unreserve(rbo);
                }
        }
        /* disable the GRPH */
        dce_v10_0_grph_enable(crtc, false);

        amdgpu_atombios_crtc_powergate(crtc, ATOM_ENABLE);

        for (i = 0; i < adev->mode_info.num_crtc; i++) {
                if (adev->mode_info.crtcs[i] &&
                    adev->mode_info.crtcs[i]->enabled &&
                    i != amdgpu_crtc->crtc_id &&
                    amdgpu_crtc->pll_id == adev->mode_info.crtcs[i]->pll_id) {
                        /* one other crtc is using this pll don't turn
                         * off the pll
                         */
                        goto done;
                }
        }

        switch (amdgpu_crtc->pll_id) {
        case ATOM_PPLL0:
        case ATOM_PPLL1:
        case ATOM_PPLL2:
                /* disable the ppll */
                amdgpu_atombios_crtc_program_pll(crtc, amdgpu_crtc->crtc_id, amdgpu_crtc->pll_id,
                                          0, 0, ATOM_DISABLE, 0, 0, 0, 0, 0, false, &ss);
                break;
        default:
                break;
        }
done:
        amdgpu_crtc->pll_id = ATOM_PPLL_INVALID;
        amdgpu_crtc->adjusted_clock = 0;
        amdgpu_crtc->encoder = NULL;
        amdgpu_crtc->connector = NULL;
}

static int dce_v10_0_crtc_mode_set(struct drm_crtc *crtc,
                                  struct drm_display_mode *mode,
                                  struct drm_display_mode *adjusted_mode,
                                  int x, int y, struct drm_framebuffer *old_fb)
{
        struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc);

        if (!amdgpu_crtc->adjusted_clock)
                return -EINVAL;

        amdgpu_atombios_crtc_set_pll(crtc, adjusted_mode);
        amdgpu_atombios_crtc_set_dtd_timing(crtc, adjusted_mode);
        dce_v10_0_crtc_do_set_base(crtc, old_fb, x, y, 0);
        amdgpu_atombios_crtc_overscan_setup(crtc, mode, adjusted_mode);
        amdgpu_atombios_crtc_scaler_setup(crtc);
        /* update the hw version fpr dpm */
        amdgpu_crtc->hw_mode = *adjusted_mode;

        return 0;
}

static bool dce_v10_0_crtc_mode_fixup(struct drm_crtc *crtc,
                                     const struct drm_display_mode *mode,
                                     struct drm_display_mode *adjusted_mode)
{
        struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc);
        struct drm_device *dev = crtc->dev;
        struct drm_encoder *encoder;

        /* assign the encoder to the amdgpu crtc to avoid repeated lookups later */
        list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
                if (encoder->crtc == crtc) {
                        amdgpu_crtc->encoder = encoder;
                        amdgpu_crtc->connector = amdgpu_get_connector_for_encoder(encoder);
                        break;
                }
        }
        if ((amdgpu_crtc->encoder == NULL) || (amdgpu_crtc->connector == NULL)) {
                amdgpu_crtc->encoder = NULL;
                amdgpu_crtc->connector = NULL;
                return false;
        }
        if (!amdgpu_crtc_scaling_mode_fixup(crtc, mode, adjusted_mode))
                return false;
        if (amdgpu_atombios_crtc_prepare_pll(crtc, adjusted_mode))
                return false;
        /* pick pll */
        amdgpu_crtc->pll_id = dce_v10_0_pick_pll(crtc);
        /* if we can't get a PPLL for a non-DP encoder, fail */
        if ((amdgpu_crtc->pll_id == ATOM_PPLL_INVALID) &&
            !ENCODER_MODE_IS_DP(amdgpu_atombios_encoder_get_encoder_mode(amdgpu_crtc->encoder)))
                return false;

        return true;
}

static int dce_v10_0_crtc_set_base(struct drm_crtc *crtc, int x, int y,
                                  struct drm_framebuffer *old_fb)
{
        return dce_v10_0_crtc_do_set_base(crtc, old_fb, x, y, 0);
}

static int dce_v10_0_crtc_set_base_atomic(struct drm_crtc *crtc,
                                         struct drm_framebuffer *fb,
                                         int x, int y, enum mode_set_atomic state)
{
       return dce_v10_0_crtc_do_set_base(crtc, fb, x, y, 1);
}

static const struct drm_crtc_helper_funcs dce_v10_0_crtc_helper_funcs = {
        .dpms = dce_v10_0_crtc_dpms,
        .mode_fixup = dce_v10_0_crtc_mode_fixup,
        .mode_set = dce_v10_0_crtc_mode_set,
        .mode_set_base = dce_v10_0_crtc_set_base,
        .mode_set_base_atomic = dce_v10_0_crtc_set_base_atomic,
        .prepare = dce_v10_0_crtc_prepare,
        .commit = dce_v10_0_crtc_commit,
        .load_lut = dce_v10_0_crtc_load_lut,
        .disable = dce_v10_0_crtc_disable,
};

static int dce_v10_0_crtc_init(struct amdgpu_device *adev, int index)
{
        struct amdgpu_crtc *amdgpu_crtc;
        int i;

        amdgpu_crtc = kzalloc(sizeof(struct amdgpu_crtc) +
                              (AMDGPUFB_CONN_LIMIT * sizeof(struct drm_connector *)), GFP_KERNEL);
        if (amdgpu_crtc == NULL)
                return -ENOMEM;

        drm_crtc_init(adev->ddev, &amdgpu_crtc->base, &dce_v10_0_crtc_funcs);

        drm_mode_crtc_set_gamma_size(&amdgpu_crtc->base, 256);
        amdgpu_crtc->crtc_id = index;
        amdgpu_crtc->pflip_queue = create_singlethread_workqueue("amdgpu-pageflip-queue");
        adev->mode_info.crtcs[index] = amdgpu_crtc;

        amdgpu_crtc->max_cursor_width = 128;
        amdgpu_crtc->max_cursor_height = 128;
        adev->ddev->mode_config.cursor_width = amdgpu_crtc->max_cursor_width;
        adev->ddev->mode_config.cursor_height = amdgpu_crtc->max_cursor_height;

        for (i = 0; i < 256; i++) {
                amdgpu_crtc->lut_r[i] = i << 2;
                amdgpu_crtc->lut_g[i] = i << 2;
                amdgpu_crtc->lut_b[i] = i << 2;
        }

        switch (amdgpu_crtc->crtc_id) {
        case 0:
        default:
                amdgpu_crtc->crtc_offset = CRTC0_REGISTER_OFFSET;
                break;
        case 1:
                amdgpu_crtc->crtc_offset = CRTC1_REGISTER_OFFSET;
                break;
        case 2:
                amdgpu_crtc->crtc_offset = CRTC2_REGISTER_OFFSET;
                break;
        case 3:
                amdgpu_crtc->crtc_offset = CRTC3_REGISTER_OFFSET;
                break;
        case 4:
                amdgpu_crtc->crtc_offset = CRTC4_REGISTER_OFFSET;
                break;
        case 5:
                amdgpu_crtc->crtc_offset = CRTC5_REGISTER_OFFSET;
                break;
        }

        amdgpu_crtc->pll_id = ATOM_PPLL_INVALID;
        amdgpu_crtc->adjusted_clock = 0;
        amdgpu_crtc->encoder = NULL;
        amdgpu_crtc->connector = NULL;
        drm_crtc_helper_add(&amdgpu_crtc->base, &dce_v10_0_crtc_helper_funcs);

        return 0;
}

static int dce_v10_0_early_init(void *handle)
{
        struct amdgpu_device *adev = (struct amdgpu_device *)handle;

        adev->audio_endpt_rreg = &dce_v10_0_audio_endpt_rreg;
        adev->audio_endpt_wreg = &dce_v10_0_audio_endpt_wreg;

        dce_v10_0_set_display_funcs(adev);
        dce_v10_0_set_irq_funcs(adev);

        switch (adev->asic_type) {
        case CHIP_TONGA:
                adev->mode_info.num_crtc = 6; /* XXX 7??? */
                adev->mode_info.num_hpd = 6;
                adev->mode_info.num_dig = 7;
                break;
        default:
                /* FIXME: not supported yet */
                return -EINVAL;
        }

        return 0;
}

static int dce_v10_0_sw_init(void *handle)
{
        int r, i;
        struct amdgpu_device *adev = (struct amdgpu_device *)handle;

        for (i = 0; i < adev->mode_info.num_crtc; i++) {
                r = amdgpu_irq_add_id(adev, i + 1, &adev->crtc_irq);
                if (r)
                        return r;
        }

        for (i = 8; i < 20; i += 2) {
                r = amdgpu_irq_add_id(adev, i, &adev->pageflip_irq);
                if (r)
                        return r;
        }

        /* HPD hotplug */
        r = amdgpu_irq_add_id(adev, 42, &adev->hpd_irq);
        if (r)
                return r;

        adev->mode_info.mode_config_initialized = true;

        adev->ddev->mode_config.funcs = &amdgpu_mode_funcs;

        adev->ddev->mode_config.max_width = 16384;
        adev->ddev->mode_config.max_height = 16384;

        adev->ddev->mode_config.preferred_depth = 24;
        adev->ddev->mode_config.prefer_shadow = 1;

        adev->ddev->mode_config.fb_base = adev->mc.aper_base;

        r = amdgpu_modeset_create_props(adev);
        if (r)
                return r;

        adev->ddev->mode_config.max_width = 16384;
        adev->ddev->mode_config.max_height = 16384;

        /* allocate crtcs */
        for (i = 0; i < adev->mode_info.num_crtc; i++) {
                r = dce_v10_0_crtc_init(adev, i);
                if (r)
                        return r;
        }

        if (amdgpu_atombios_get_connector_info_from_object_table(adev))
                amdgpu_print_display_setup(adev->ddev);
        else
                return -EINVAL;

        /* setup afmt */
        dce_v10_0_afmt_init(adev);

        r = dce_v10_0_audio_init(adev);
        if (r)
                return r;

        drm_kms_helper_poll_init(adev->ddev);

        return r;
}

static int dce_v10_0_sw_fini(void *handle)
{
        struct amdgpu_device *adev = (struct amdgpu_device *)handle;

        kfree(adev->mode_info.bios_hardcoded_edid);

        drm_kms_helper_poll_fini(adev->ddev);

        dce_v10_0_audio_fini(adev);

        dce_v10_0_afmt_fini(adev);

        drm_mode_config_cleanup(adev->ddev);
        adev->mode_info.mode_config_initialized = false;

        return 0;
}

static int dce_v10_0_hw_init(void *handle)
{
        int i;
        struct amdgpu_device *adev = (struct amdgpu_device *)handle;

        dce_v10_0_init_golden_registers(adev);

        /* init dig PHYs, disp eng pll */
        amdgpu_atombios_encoder_init_dig(adev);
        amdgpu_atombios_crtc_set_disp_eng_pll(adev, adev->clock.default_dispclk);

        /* initialize hpd */
        dce_v10_0_hpd_init(adev);