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linux/drivers/gpu/drm/i915/intel_ddi.c
Vandita Kulkarni 4690985e00 drm/i915/icl: Fix port disable sequence for mipi-dsi 
Re-enable clock gating of DDI clocks.

v2: Fix the default ddi clk state for mipi-dsi (Imre)

Fixes: 1026bea003 ("drm/i915/icl: Ungate DSI clocks")
Signed-off-by: Vandita Kulkarni <vandita.kulkarni@intel.com>
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1553513202-13863-2-git-send-email-vandita.kulkarni@intel.com
(cherry picked from commit 942d1cf48e)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
2019-04-10 09:06:35 -07:00

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/*
* Copyright © 2012 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*
* Authors:
* Eugeni Dodonov <eugeni.dodonov@intel.com>
*
*/
#include <drm/drm_scdc_helper.h>
#include "i915_drv.h"
#include "intel_drv.h"
#include "intel_dsi.h"
struct ddi_buf_trans {
u32 trans1; /* balance leg enable, de-emph level */
u32 trans2; /* vref sel, vswing */
u8 i_boost; /* SKL: I_boost; valid: 0x0, 0x1, 0x3, 0x7 */
};
static const u8 index_to_dp_signal_levels[] = {
[0] = DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_0,
[1] = DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_1,
[2] = DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_2,
[3] = DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_3,
[4] = DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_0,
[5] = DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_1,
[6] = DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_2,
[7] = DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_0,
[8] = DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_1,
[9] = DP_TRAIN_VOLTAGE_SWING_LEVEL_3 | DP_TRAIN_PRE_EMPH_LEVEL_0,
};
/* HDMI/DVI modes ignore everything but the last 2 items. So we share
* them for both DP and FDI transports, allowing those ports to
* automatically adapt to HDMI connections as well
*/
static const struct ddi_buf_trans hsw_ddi_translations_dp[] = {
{ 0x00FFFFFF, 0x0006000E, 0x0 },
{ 0x00D75FFF, 0x0005000A, 0x0 },
{ 0x00C30FFF, 0x00040006, 0x0 },
{ 0x80AAAFFF, 0x000B0000, 0x0 },
{ 0x00FFFFFF, 0x0005000A, 0x0 },
{ 0x00D75FFF, 0x000C0004, 0x0 },
{ 0x80C30FFF, 0x000B0000, 0x0 },
{ 0x00FFFFFF, 0x00040006, 0x0 },
{ 0x80D75FFF, 0x000B0000, 0x0 },
};
static const struct ddi_buf_trans hsw_ddi_translations_fdi[] = {
{ 0x00FFFFFF, 0x0007000E, 0x0 },
{ 0x00D75FFF, 0x000F000A, 0x0 },
{ 0x00C30FFF, 0x00060006, 0x0 },
{ 0x00AAAFFF, 0x001E0000, 0x0 },
{ 0x00FFFFFF, 0x000F000A, 0x0 },
{ 0x00D75FFF, 0x00160004, 0x0 },
{ 0x00C30FFF, 0x001E0000, 0x0 },
{ 0x00FFFFFF, 0x00060006, 0x0 },
{ 0x00D75FFF, 0x001E0000, 0x0 },
};
static const struct ddi_buf_trans hsw_ddi_translations_hdmi[] = {
/* Idx NT mV d T mV d db */
{ 0x00FFFFFF, 0x0006000E, 0x0 },/* 0: 400 400 0 */
{ 0x00E79FFF, 0x000E000C, 0x0 },/* 1: 400 500 2 */
{ 0x00D75FFF, 0x0005000A, 0x0 },/* 2: 400 600 3.5 */
{ 0x00FFFFFF, 0x0005000A, 0x0 },/* 3: 600 600 0 */
{ 0x00E79FFF, 0x001D0007, 0x0 },/* 4: 600 750 2 */
{ 0x00D75FFF, 0x000C0004, 0x0 },/* 5: 600 900 3.5 */
{ 0x00FFFFFF, 0x00040006, 0x0 },/* 6: 800 800 0 */
{ 0x80E79FFF, 0x00030002, 0x0 },/* 7: 800 1000 2 */
{ 0x00FFFFFF, 0x00140005, 0x0 },/* 8: 850 850 0 */
{ 0x00FFFFFF, 0x000C0004, 0x0 },/* 9: 900 900 0 */
{ 0x00FFFFFF, 0x001C0003, 0x0 },/* 10: 950 950 0 */
{ 0x80FFFFFF, 0x00030002, 0x0 },/* 11: 1000 1000 0 */
};
static const struct ddi_buf_trans bdw_ddi_translations_edp[] = {
{ 0x00FFFFFF, 0x00000012, 0x0 },
{ 0x00EBAFFF, 0x00020011, 0x0 },
{ 0x00C71FFF, 0x0006000F, 0x0 },
{ 0x00AAAFFF, 0x000E000A, 0x0 },
{ 0x00FFFFFF, 0x00020011, 0x0 },
{ 0x00DB6FFF, 0x0005000F, 0x0 },
{ 0x00BEEFFF, 0x000A000C, 0x0 },
{ 0x00FFFFFF, 0x0005000F, 0x0 },
{ 0x00DB6FFF, 0x000A000C, 0x0 },
};
static const struct ddi_buf_trans bdw_ddi_translations_dp[] = {
{ 0x00FFFFFF, 0x0007000E, 0x0 },
{ 0x00D75FFF, 0x000E000A, 0x0 },
{ 0x00BEFFFF, 0x00140006, 0x0 },
{ 0x80B2CFFF, 0x001B0002, 0x0 },
{ 0x00FFFFFF, 0x000E000A, 0x0 },
{ 0x00DB6FFF, 0x00160005, 0x0 },
{ 0x80C71FFF, 0x001A0002, 0x0 },
{ 0x00F7DFFF, 0x00180004, 0x0 },
{ 0x80D75FFF, 0x001B0002, 0x0 },
};
static const struct ddi_buf_trans bdw_ddi_translations_fdi[] = {
{ 0x00FFFFFF, 0x0001000E, 0x0 },
{ 0x00D75FFF, 0x0004000A, 0x0 },
{ 0x00C30FFF, 0x00070006, 0x0 },
{ 0x00AAAFFF, 0x000C0000, 0x0 },
{ 0x00FFFFFF, 0x0004000A, 0x0 },
{ 0x00D75FFF, 0x00090004, 0x0 },
{ 0x00C30FFF, 0x000C0000, 0x0 },
{ 0x00FFFFFF, 0x00070006, 0x0 },
{ 0x00D75FFF, 0x000C0000, 0x0 },
};
static const struct ddi_buf_trans bdw_ddi_translations_hdmi[] = {
/* Idx NT mV d T mV df db */
{ 0x00FFFFFF, 0x0007000E, 0x0 },/* 0: 400 400 0 */
{ 0x00D75FFF, 0x000E000A, 0x0 },/* 1: 400 600 3.5 */
{ 0x00BEFFFF, 0x00140006, 0x0 },/* 2: 400 800 6 */
{ 0x00FFFFFF, 0x0009000D, 0x0 },/* 3: 450 450 0 */
{ 0x00FFFFFF, 0x000E000A, 0x0 },/* 4: 600 600 0 */
{ 0x00D7FFFF, 0x00140006, 0x0 },/* 5: 600 800 2.5 */
{ 0x80CB2FFF, 0x001B0002, 0x0 },/* 6: 600 1000 4.5 */
{ 0x00FFFFFF, 0x00140006, 0x0 },/* 7: 800 800 0 */
{ 0x80E79FFF, 0x001B0002, 0x0 },/* 8: 800 1000 2 */
{ 0x80FFFFFF, 0x001B0002, 0x0 },/* 9: 1000 1000 0 */
};
/* Skylake H and S */
static const struct ddi_buf_trans skl_ddi_translations_dp[] = {
{ 0x00002016, 0x000000A0, 0x0 },
{ 0x00005012, 0x0000009B, 0x0 },
{ 0x00007011, 0x00000088, 0x0 },
{ 0x80009010, 0x000000C0, 0x1 },
{ 0x00002016, 0x0000009B, 0x0 },
{ 0x00005012, 0x00000088, 0x0 },
{ 0x80007011, 0x000000C0, 0x1 },
{ 0x00002016, 0x000000DF, 0x0 },
{ 0x80005012, 0x000000C0, 0x1 },
};
/* Skylake U */
static const struct ddi_buf_trans skl_u_ddi_translations_dp[] = {
{ 0x0000201B, 0x000000A2, 0x0 },
{ 0x00005012, 0x00000088, 0x0 },
{ 0x80007011, 0x000000CD, 0x1 },
{ 0x80009010, 0x000000C0, 0x1 },
{ 0x0000201B, 0x0000009D, 0x0 },
{ 0x80005012, 0x000000C0, 0x1 },
{ 0x80007011, 0x000000C0, 0x1 },
{ 0x00002016, 0x00000088, 0x0 },
{ 0x80005012, 0x000000C0, 0x1 },
};
/* Skylake Y */
static const struct ddi_buf_trans skl_y_ddi_translations_dp[] = {
{ 0x00000018, 0x000000A2, 0x0 },
{ 0x00005012, 0x00000088, 0x0 },
{ 0x80007011, 0x000000CD, 0x3 },
{ 0x80009010, 0x000000C0, 0x3 },
{ 0x00000018, 0x0000009D, 0x0 },
{ 0x80005012, 0x000000C0, 0x3 },
{ 0x80007011, 0x000000C0, 0x3 },
{ 0x00000018, 0x00000088, 0x0 },
{ 0x80005012, 0x000000C0, 0x3 },
};
/* Kabylake H and S */
static const struct ddi_buf_trans kbl_ddi_translations_dp[] = {
{ 0x00002016, 0x000000A0, 0x0 },
{ 0x00005012, 0x0000009B, 0x0 },
{ 0x00007011, 0x00000088, 0x0 },
{ 0x80009010, 0x000000C0, 0x1 },
{ 0x00002016, 0x0000009B, 0x0 },
{ 0x00005012, 0x00000088, 0x0 },
{ 0x80007011, 0x000000C0, 0x1 },
{ 0x00002016, 0x00000097, 0x0 },
{ 0x80005012, 0x000000C0, 0x1 },
};
/* Kabylake U */
static const struct ddi_buf_trans kbl_u_ddi_translations_dp[] = {
{ 0x0000201B, 0x000000A1, 0x0 },
{ 0x00005012, 0x00000088, 0x0 },
{ 0x80007011, 0x000000CD, 0x3 },
{ 0x80009010, 0x000000C0, 0x3 },
{ 0x0000201B, 0x0000009D, 0x0 },
{ 0x80005012, 0x000000C0, 0x3 },
{ 0x80007011, 0x000000C0, 0x3 },
{ 0x00002016, 0x0000004F, 0x0 },
{ 0x80005012, 0x000000C0, 0x3 },
};
/* Kabylake Y */
static const struct ddi_buf_trans kbl_y_ddi_translations_dp[] = {
{ 0x00001017, 0x000000A1, 0x0 },
{ 0x00005012, 0x00000088, 0x0 },
{ 0x80007011, 0x000000CD, 0x3 },
{ 0x8000800F, 0x000000C0, 0x3 },
{ 0x00001017, 0x0000009D, 0x0 },
{ 0x80005012, 0x000000C0, 0x3 },
{ 0x80007011, 0x000000C0, 0x3 },
{ 0x00001017, 0x0000004C, 0x0 },
{ 0x80005012, 0x000000C0, 0x3 },
};
/*
* Skylake/Kabylake H and S
* eDP 1.4 low vswing translation parameters
*/
static const struct ddi_buf_trans skl_ddi_translations_edp[] = {
{ 0x00000018, 0x000000A8, 0x0 },
{ 0x00004013, 0x000000A9, 0x0 },
{ 0x00007011, 0x000000A2, 0x0 },
{ 0x00009010, 0x0000009C, 0x0 },
{ 0x00000018, 0x000000A9, 0x0 },
{ 0x00006013, 0x000000A2, 0x0 },
{ 0x00007011, 0x000000A6, 0x0 },
{ 0x00000018, 0x000000AB, 0x0 },
{ 0x00007013, 0x0000009F, 0x0 },
{ 0x00000018, 0x000000DF, 0x0 },
};
/*
* Skylake/Kabylake U
* eDP 1.4 low vswing translation parameters
*/
static const struct ddi_buf_trans skl_u_ddi_translations_edp[] = {
{ 0x00000018, 0x000000A8, 0x0 },
{ 0x00004013, 0x000000A9, 0x0 },
{ 0x00007011, 0x000000A2, 0x0 },
{ 0x00009010, 0x0000009C, 0x0 },
{ 0x00000018, 0x000000A9, 0x0 },
{ 0x00006013, 0x000000A2, 0x0 },
{ 0x00007011, 0x000000A6, 0x0 },
{ 0x00002016, 0x000000AB, 0x0 },
{ 0x00005013, 0x0000009F, 0x0 },
{ 0x00000018, 0x000000DF, 0x0 },
};
/*
* Skylake/Kabylake Y
* eDP 1.4 low vswing translation parameters
*/
static const struct ddi_buf_trans skl_y_ddi_translations_edp[] = {
{ 0x00000018, 0x000000A8, 0x0 },
{ 0x00004013, 0x000000AB, 0x0 },
{ 0x00007011, 0x000000A4, 0x0 },
{ 0x00009010, 0x000000DF, 0x0 },
{ 0x00000018, 0x000000AA, 0x0 },
{ 0x00006013, 0x000000A4, 0x0 },
{ 0x00007011, 0x0000009D, 0x0 },
{ 0x00000018, 0x000000A0, 0x0 },
{ 0x00006012, 0x000000DF, 0x0 },
{ 0x00000018, 0x0000008A, 0x0 },
};
/* Skylake/Kabylake U, H and S */
static const struct ddi_buf_trans skl_ddi_translations_hdmi[] = {
{ 0x00000018, 0x000000AC, 0x0 },
{ 0x00005012, 0x0000009D, 0x0 },
{ 0x00007011, 0x00000088, 0x0 },
{ 0x00000018, 0x000000A1, 0x0 },
{ 0x00000018, 0x00000098, 0x0 },
{ 0x00004013, 0x00000088, 0x0 },
{ 0x80006012, 0x000000CD, 0x1 },
{ 0x00000018, 0x000000DF, 0x0 },
{ 0x80003015, 0x000000CD, 0x1 }, /* Default */
{ 0x80003015, 0x000000C0, 0x1 },
{ 0x80000018, 0x000000C0, 0x1 },
};
/* Skylake/Kabylake Y */
static const struct ddi_buf_trans skl_y_ddi_translations_hdmi[] = {
{ 0x00000018, 0x000000A1, 0x0 },
{ 0x00005012, 0x000000DF, 0x0 },
{ 0x80007011, 0x000000CB, 0x3 },
{ 0x00000018, 0x000000A4, 0x0 },
{ 0x00000018, 0x0000009D, 0x0 },
{ 0x00004013, 0x00000080, 0x0 },
{ 0x80006013, 0x000000C0, 0x3 },
{ 0x00000018, 0x0000008A, 0x0 },
{ 0x80003015, 0x000000C0, 0x3 }, /* Default */
{ 0x80003015, 0x000000C0, 0x3 },
{ 0x80000018, 0x000000C0, 0x3 },
};
struct bxt_ddi_buf_trans {
u8 margin; /* swing value */
u8 scale; /* scale value */
u8 enable; /* scale enable */
u8 deemphasis;
};
static const struct bxt_ddi_buf_trans bxt_ddi_translations_dp[] = {
/* Idx NT mV diff db */
{ 52, 0x9A, 0, 128, }, /* 0: 400 0 */
{ 78, 0x9A, 0, 85, }, /* 1: 400 3.5 */
{ 104, 0x9A, 0, 64, }, /* 2: 400 6 */
{ 154, 0x9A, 0, 43, }, /* 3: 400 9.5 */
{ 77, 0x9A, 0, 128, }, /* 4: 600 0 */
{ 116, 0x9A, 0, 85, }, /* 5: 600 3.5 */
{ 154, 0x9A, 0, 64, }, /* 6: 600 6 */
{ 102, 0x9A, 0, 128, }, /* 7: 800 0 */
{ 154, 0x9A, 0, 85, }, /* 8: 800 3.5 */
{ 154, 0x9A, 1, 128, }, /* 9: 1200 0 */
};
static const struct bxt_ddi_buf_trans bxt_ddi_translations_edp[] = {
/* Idx NT mV diff db */
{ 26, 0, 0, 128, }, /* 0: 200 0 */
{ 38, 0, 0, 112, }, /* 1: 200 1.5 */
{ 48, 0, 0, 96, }, /* 2: 200 4 */
{ 54, 0, 0, 69, }, /* 3: 200 6 */
{ 32, 0, 0, 128, }, /* 4: 250 0 */
{ 48, 0, 0, 104, }, /* 5: 250 1.5 */
{ 54, 0, 0, 85, }, /* 6: 250 4 */
{ 43, 0, 0, 128, }, /* 7: 300 0 */
{ 54, 0, 0, 101, }, /* 8: 300 1.5 */
{ 48, 0, 0, 128, }, /* 9: 300 0 */
};
/* BSpec has 2 recommended values - entries 0 and 8.
* Using the entry with higher vswing.
*/
static const struct bxt_ddi_buf_trans bxt_ddi_translations_hdmi[] = {
/* Idx NT mV diff db */
{ 52, 0x9A, 0, 128, }, /* 0: 400 0 */
{ 52, 0x9A, 0, 85, }, /* 1: 400 3.5 */
{ 52, 0x9A, 0, 64, }, /* 2: 400 6 */
{ 42, 0x9A, 0, 43, }, /* 3: 400 9.5 */
{ 77, 0x9A, 0, 128, }, /* 4: 600 0 */
{ 77, 0x9A, 0, 85, }, /* 5: 600 3.5 */
{ 77, 0x9A, 0, 64, }, /* 6: 600 6 */
{ 102, 0x9A, 0, 128, }, /* 7: 800 0 */
{ 102, 0x9A, 0, 85, }, /* 8: 800 3.5 */
{ 154, 0x9A, 1, 128, }, /* 9: 1200 0 */
};
struct cnl_ddi_buf_trans {
u8 dw2_swing_sel;
u8 dw7_n_scalar;
u8 dw4_cursor_coeff;
u8 dw4_post_cursor_2;
u8 dw4_post_cursor_1;
};
/* Voltage Swing Programming for VccIO 0.85V for DP */
static const struct cnl_ddi_buf_trans cnl_ddi_translations_dp_0_85V[] = {
/* NT mV Trans mV db */
{ 0xA, 0x5D, 0x3F, 0x00, 0x00 }, /* 350 350 0.0 */
{ 0xA, 0x6A, 0x38, 0x00, 0x07 }, /* 350 500 3.1 */
{ 0xB, 0x7A, 0x32, 0x00, 0x0D }, /* 350 700 6.0 */
{ 0x6, 0x7C, 0x2D, 0x00, 0x12 }, /* 350 900 8.2 */
{ 0xA, 0x69, 0x3F, 0x00, 0x00 }, /* 500 500 0.0 */
{ 0xB, 0x7A, 0x36, 0x00, 0x09 }, /* 500 700 2.9 */
{ 0x6, 0x7C, 0x30, 0x00, 0x0F }, /* 500 900 5.1 */
{ 0xB, 0x7D, 0x3C, 0x00, 0x03 }, /* 650 725 0.9 */
{ 0x6, 0x7C, 0x34, 0x00, 0x0B }, /* 600 900 3.5 */
{ 0x6, 0x7B, 0x3F, 0x00, 0x00 }, /* 900 900 0.0 */
};
/* Voltage Swing Programming for VccIO 0.85V for HDMI */
static const struct cnl_ddi_buf_trans cnl_ddi_translations_hdmi_0_85V[] = {
/* NT mV Trans mV db */
{ 0xA, 0x60, 0x3F, 0x00, 0x00 }, /* 450 450 0.0 */
{ 0xB, 0x73, 0x36, 0x00, 0x09 }, /* 450 650 3.2 */
{ 0x6, 0x7F, 0x31, 0x00, 0x0E }, /* 450 850 5.5 */
{ 0xB, 0x73, 0x3F, 0x00, 0x00 }, /* 650 650 0.0 */
{ 0x6, 0x7F, 0x37, 0x00, 0x08 }, /* 650 850 2.3 */
{ 0x6, 0x7F, 0x3F, 0x00, 0x00 }, /* 850 850 0.0 */
{ 0x6, 0x7F, 0x35, 0x00, 0x0A }, /* 600 850 3.0 */
};
/* Voltage Swing Programming for VccIO 0.85V for eDP */
static const struct cnl_ddi_buf_trans cnl_ddi_translations_edp_0_85V[] = {
/* NT mV Trans mV db */
{ 0xA, 0x66, 0x3A, 0x00, 0x05 }, /* 384 500 2.3 */
{ 0x0, 0x7F, 0x38, 0x00, 0x07 }, /* 153 200 2.3 */
{ 0x8, 0x7F, 0x38, 0x00, 0x07 }, /* 192 250 2.3 */
{ 0x1, 0x7F, 0x38, 0x00, 0x07 }, /* 230 300 2.3 */
{ 0x9, 0x7F, 0x38, 0x00, 0x07 }, /* 269 350 2.3 */
{ 0xA, 0x66, 0x3C, 0x00, 0x03 }, /* 446 500 1.0 */
{ 0xB, 0x70, 0x3C, 0x00, 0x03 }, /* 460 600 2.3 */
{ 0xC, 0x75, 0x3C, 0x00, 0x03 }, /* 537 700 2.3 */
{ 0x2, 0x7F, 0x3F, 0x00, 0x00 }, /* 400 400 0.0 */
};
/* Voltage Swing Programming for VccIO 0.95V for DP */
static const struct cnl_ddi_buf_trans cnl_ddi_translations_dp_0_95V[] = {
/* NT mV Trans mV db */
{ 0xA, 0x5D, 0x3F, 0x00, 0x00 }, /* 350 350 0.0 */
{ 0xA, 0x6A, 0x38, 0x00, 0x07 }, /* 350 500 3.1 */
{ 0xB, 0x7A, 0x32, 0x00, 0x0D }, /* 350 700 6.0 */
{ 0x6, 0x7C, 0x2D, 0x00, 0x12 }, /* 350 900 8.2 */
{ 0xA, 0x69, 0x3F, 0x00, 0x00 }, /* 500 500 0.0 */
{ 0xB, 0x7A, 0x36, 0x00, 0x09 }, /* 500 700 2.9 */
{ 0x6, 0x7C, 0x30, 0x00, 0x0F }, /* 500 900 5.1 */
{ 0xB, 0x7D, 0x3C, 0x00, 0x03 }, /* 650 725 0.9 */
{ 0x6, 0x7C, 0x34, 0x00, 0x0B }, /* 600 900 3.5 */
{ 0x6, 0x7B, 0x3F, 0x00, 0x00 }, /* 900 900 0.0 */
};
/* Voltage Swing Programming for VccIO 0.95V for HDMI */
static const struct cnl_ddi_buf_trans cnl_ddi_translations_hdmi_0_95V[] = {
/* NT mV Trans mV db */
{ 0xA, 0x5C, 0x3F, 0x00, 0x00 }, /* 400 400 0.0 */
{ 0xB, 0x69, 0x37, 0x00, 0x08 }, /* 400 600 3.5 */
{ 0x5, 0x76, 0x31, 0x00, 0x0E }, /* 400 800 6.0 */
{ 0xA, 0x5E, 0x3F, 0x00, 0x00 }, /* 450 450 0.0 */
{ 0xB, 0x69, 0x3F, 0x00, 0x00 }, /* 600 600 0.0 */
{ 0xB, 0x79, 0x35, 0x00, 0x0A }, /* 600 850 3.0 */
{ 0x6, 0x7D, 0x32, 0x00, 0x0D }, /* 600 1000 4.4 */
{ 0x5, 0x76, 0x3F, 0x00, 0x00 }, /* 800 800 0.0 */
{ 0x6, 0x7D, 0x39, 0x00, 0x06 }, /* 800 1000 1.9 */
{ 0x6, 0x7F, 0x39, 0x00, 0x06 }, /* 850 1050 1.8 */
{ 0x6, 0x7F, 0x3F, 0x00, 0x00 }, /* 1050 1050 0.0 */
};
/* Voltage Swing Programming for VccIO 0.95V for eDP */
static const struct cnl_ddi_buf_trans cnl_ddi_translations_edp_0_95V[] = {
/* NT mV Trans mV db */
{ 0xA, 0x61, 0x3A, 0x00, 0x05 }, /* 384 500 2.3 */
{ 0x0, 0x7F, 0x38, 0x00, 0x07 }, /* 153 200 2.3 */
{ 0x8, 0x7F, 0x38, 0x00, 0x07 }, /* 192 250 2.3 */
{ 0x1, 0x7F, 0x38, 0x00, 0x07 }, /* 230 300 2.3 */
{ 0x9, 0x7F, 0x38, 0x00, 0x07 }, /* 269 350 2.3 */
{ 0xA, 0x61, 0x3C, 0x00, 0x03 }, /* 446 500 1.0 */
{ 0xB, 0x68, 0x39, 0x00, 0x06 }, /* 460 600 2.3 */
{ 0xC, 0x6E, 0x39, 0x00, 0x06 }, /* 537 700 2.3 */
{ 0x4, 0x7F, 0x3A, 0x00, 0x05 }, /* 460 600 2.3 */
{ 0x2, 0x7F, 0x3F, 0x00, 0x00 }, /* 400 400 0.0 */
};
/* Voltage Swing Programming for VccIO 1.05V for DP */
static const struct cnl_ddi_buf_trans cnl_ddi_translations_dp_1_05V[] = {
/* NT mV Trans mV db */
{ 0xA, 0x58, 0x3F, 0x00, 0x00 }, /* 400 400 0.0 */
{ 0xB, 0x64, 0x37, 0x00, 0x08 }, /* 400 600 3.5 */
{ 0x5, 0x70, 0x31, 0x00, 0x0E }, /* 400 800 6.0 */
{ 0x6, 0x7F, 0x2C, 0x00, 0x13 }, /* 400 1050 8.4 */
{ 0xB, 0x64, 0x3F, 0x00, 0x00 }, /* 600 600 0.0 */
{ 0x5, 0x73, 0x35, 0x00, 0x0A }, /* 600 850 3.0 */
{ 0x6, 0x7F, 0x30, 0x00, 0x0F }, /* 550 1050 5.6 */
{ 0x5, 0x76, 0x3E, 0x00, 0x01 }, /* 850 900 0.5 */
{ 0x6, 0x7F, 0x36, 0x00, 0x09 }, /* 750 1050 2.9 */
{ 0x6, 0x7F, 0x3F, 0x00, 0x00 }, /* 1050 1050 0.0 */
};
/* Voltage Swing Programming for VccIO 1.05V for HDMI */
static const struct cnl_ddi_buf_trans cnl_ddi_translations_hdmi_1_05V[] = {
/* NT mV Trans mV db */
{ 0xA, 0x58, 0x3F, 0x00, 0x00 }, /* 400 400 0.0 */
{ 0xB, 0x64, 0x37, 0x00, 0x08 }, /* 400 600 3.5 */
{ 0x5, 0x70, 0x31, 0x00, 0x0E }, /* 400 800 6.0 */
{ 0xA, 0x5B, 0x3F, 0x00, 0x00 }, /* 450 450 0.0 */
{ 0xB, 0x64, 0x3F, 0x00, 0x00 }, /* 600 600 0.0 */
{ 0x5, 0x73, 0x35, 0x00, 0x0A }, /* 600 850 3.0 */
{ 0x6, 0x7C, 0x32, 0x00, 0x0D }, /* 600 1000 4.4 */
{ 0x5, 0x70, 0x3F, 0x00, 0x00 }, /* 800 800 0.0 */
{ 0x6, 0x7C, 0x39, 0x00, 0x06 }, /* 800 1000 1.9 */
{ 0x6, 0x7F, 0x39, 0x00, 0x06 }, /* 850 1050 1.8 */
{ 0x6, 0x7F, 0x3F, 0x00, 0x00 }, /* 1050 1050 0.0 */
};
/* Voltage Swing Programming for VccIO 1.05V for eDP */
static const struct cnl_ddi_buf_trans cnl_ddi_translations_edp_1_05V[] = {
/* NT mV Trans mV db */
{ 0xA, 0x5E, 0x3A, 0x00, 0x05 }, /* 384 500 2.3 */
{ 0x0, 0x7F, 0x38, 0x00, 0x07 }, /* 153 200 2.3 */
{ 0x8, 0x7F, 0x38, 0x00, 0x07 }, /* 192 250 2.3 */
{ 0x1, 0x7F, 0x38, 0x00, 0x07 }, /* 230 300 2.3 */
{ 0x9, 0x7F, 0x38, 0x00, 0x07 }, /* 269 350 2.3 */
{ 0xA, 0x5E, 0x3C, 0x00, 0x03 }, /* 446 500 1.0 */
{ 0xB, 0x64, 0x39, 0x00, 0x06 }, /* 460 600 2.3 */
{ 0xE, 0x6A, 0x39, 0x00, 0x06 }, /* 537 700 2.3 */
{ 0x2, 0x7F, 0x3F, 0x00, 0x00 }, /* 400 400 0.0 */
};
/* icl_combo_phy_ddi_translations */
static const struct cnl_ddi_buf_trans icl_combo_phy_ddi_translations_dp_hbr2[] = {
/* NT mV Trans mV db */
{ 0xA, 0x35, 0x3F, 0x00, 0x00 }, /* 350 350 0.0 */
{ 0xA, 0x4F, 0x37, 0x00, 0x08 }, /* 350 500 3.1 */
{ 0xC, 0x71, 0x2F, 0x00, 0x10 }, /* 350 700 6.0 */
{ 0x6, 0x7F, 0x2B, 0x00, 0x14 }, /* 350 900 8.2 */
{ 0xA, 0x4C, 0x3F, 0x00, 0x00 }, /* 500 500 0.0 */
{ 0xC, 0x73, 0x34, 0x00, 0x0B }, /* 500 700 2.9 */
{ 0x6, 0x7F, 0x2F, 0x00, 0x10 }, /* 500 900 5.1 */
{ 0xC, 0x6C, 0x3C, 0x00, 0x03 }, /* 650 700 0.6 */
{ 0x6, 0x7F, 0x35, 0x00, 0x0A }, /* 600 900 3.5 */
{ 0x6, 0x7F, 0x3F, 0x00, 0x00 }, /* 900 900 0.0 */
};
static const struct cnl_ddi_buf_trans icl_combo_phy_ddi_translations_edp_hbr2[] = {
/* NT mV Trans mV db */
{ 0x0, 0x7F, 0x3F, 0x00, 0x00 }, /* 200 200 0.0 */
{ 0x8, 0x7F, 0x38, 0x00, 0x07 }, /* 200 250 1.9 */
{ 0x1, 0x7F, 0x33, 0x00, 0x0C }, /* 200 300 3.5 */
{ 0x9, 0x7F, 0x31, 0x00, 0x0E }, /* 200 350 4.9 */
{ 0x8, 0x7F, 0x3F, 0x00, 0x00 }, /* 250 250 0.0 */
{ 0x1, 0x7F, 0x38, 0x00, 0x07 }, /* 250 300 1.6 */
{ 0x9, 0x7F, 0x35, 0x00, 0x0A }, /* 250 350 2.9 */
{ 0x1, 0x7F, 0x3F, 0x00, 0x00 }, /* 300 300 0.0 */
{ 0x9, 0x7F, 0x38, 0x00, 0x07 }, /* 300 350 1.3 */
{ 0x9, 0x7F, 0x3F, 0x00, 0x00 }, /* 350 350 0.0 */
};
static const struct cnl_ddi_buf_trans icl_combo_phy_ddi_translations_edp_hbr3[] = {
/* NT mV Trans mV db */
{ 0xA, 0x35, 0x3F, 0x00, 0x00 }, /* 350 350 0.0 */
{ 0xA, 0x4F, 0x37, 0x00, 0x08 }, /* 350 500 3.1 */
{ 0xC, 0x71, 0x2F, 0x00, 0x10 }, /* 350 700 6.0 */
{ 0x6, 0x7F, 0x2B, 0x00, 0x14 }, /* 350 900 8.2 */
{ 0xA, 0x4C, 0x3F, 0x00, 0x00 }, /* 500 500 0.0 */
{ 0xC, 0x73, 0x34, 0x00, 0x0B }, /* 500 700 2.9 */
{ 0x6, 0x7F, 0x2F, 0x00, 0x10 }, /* 500 900 5.1 */
{ 0xC, 0x6C, 0x3C, 0x00, 0x03 }, /* 650 700 0.6 */
{ 0x6, 0x7F, 0x35, 0x00, 0x0A }, /* 600 900 3.5 */
{ 0x6, 0x7F, 0x3F, 0x00, 0x00 }, /* 900 900 0.0 */
};
static const struct cnl_ddi_buf_trans icl_combo_phy_ddi_translations_hdmi[] = {
/* NT mV Trans mV db */
{ 0xA, 0x60, 0x3F, 0x00, 0x00 }, /* 450 450 0.0 */
{ 0xB, 0x73, 0x36, 0x00, 0x09 }, /* 450 650 3.2 */
{ 0x6, 0x7F, 0x31, 0x00, 0x0E }, /* 450 850 5.5 */
{ 0xB, 0x73, 0x3F, 0x00, 0x00 }, /* 650 650 0.0 ALS */
{ 0x6, 0x7F, 0x37, 0x00, 0x08 }, /* 650 850 2.3 */
{ 0x6, 0x7F, 0x3F, 0x00, 0x00 }, /* 850 850 0.0 */
{ 0x6, 0x7F, 0x35, 0x00, 0x0A }, /* 600 850 3.0 */
};
struct icl_mg_phy_ddi_buf_trans {
u32 cri_txdeemph_override_5_0;
u32 cri_txdeemph_override_11_6;
u32 cri_txdeemph_override_17_12;
};
static const struct icl_mg_phy_ddi_buf_trans icl_mg_phy_ddi_translations[] = {
/* Voltage swing pre-emphasis */
{ 0x0, 0x1B, 0x00 }, /* 0 0 */
{ 0x0, 0x23, 0x08 }, /* 0 1 */
{ 0x0, 0x2D, 0x12 }, /* 0 2 */
{ 0x0, 0x00, 0x00 }, /* 0 3 */
{ 0x0, 0x23, 0x00 }, /* 1 0 */
{ 0x0, 0x2B, 0x09 }, /* 1 1 */
{ 0x0, 0x2E, 0x11 }, /* 1 2 */
{ 0x0, 0x2F, 0x00 }, /* 2 0 */
{ 0x0, 0x33, 0x0C }, /* 2 1 */
{ 0x0, 0x00, 0x00 }, /* 3 0 */
};
static const struct ddi_buf_trans *
bdw_get_buf_trans_edp(struct drm_i915_private *dev_priv, int *n_entries)
{
if (dev_priv->vbt.edp.low_vswing) {
*n_entries = ARRAY_SIZE(bdw_ddi_translations_edp);
return bdw_ddi_translations_edp;
} else {
*n_entries = ARRAY_SIZE(bdw_ddi_translations_dp);
return bdw_ddi_translations_dp;
}
}
static const struct ddi_buf_trans *
skl_get_buf_trans_dp(struct drm_i915_private *dev_priv, int *n_entries)
{
if (IS_SKL_ULX(dev_priv)) {
*n_entries = ARRAY_SIZE(skl_y_ddi_translations_dp);
return skl_y_ddi_translations_dp;
} else if (IS_SKL_ULT(dev_priv)) {
*n_entries = ARRAY_SIZE(skl_u_ddi_translations_dp);
return skl_u_ddi_translations_dp;
} else {
*n_entries = ARRAY_SIZE(skl_ddi_translations_dp);
return skl_ddi_translations_dp;
}
}
static const struct ddi_buf_trans *
kbl_get_buf_trans_dp(struct drm_i915_private *dev_priv, int *n_entries)
{
if (IS_KBL_ULX(dev_priv) || IS_AML_ULX(dev_priv)) {
*n_entries = ARRAY_SIZE(kbl_y_ddi_translations_dp);
return kbl_y_ddi_translations_dp;
} else if (IS_KBL_ULT(dev_priv) || IS_CFL_ULT(dev_priv)) {
*n_entries = ARRAY_SIZE(kbl_u_ddi_translations_dp);
return kbl_u_ddi_translations_dp;
} else {
*n_entries = ARRAY_SIZE(kbl_ddi_translations_dp);
return kbl_ddi_translations_dp;
}
}
static const struct ddi_buf_trans *
skl_get_buf_trans_edp(struct drm_i915_private *dev_priv, int *n_entries)
{
if (dev_priv->vbt.edp.low_vswing) {
if (IS_SKL_ULX(dev_priv) || IS_KBL_ULX(dev_priv) || IS_AML_ULX(dev_priv)) {
*n_entries = ARRAY_SIZE(skl_y_ddi_translations_edp);
return skl_y_ddi_translations_edp;
} else if (IS_SKL_ULT(dev_priv) || IS_KBL_ULT(dev_priv) ||
IS_CFL_ULT(dev_priv)) {
*n_entries = ARRAY_SIZE(skl_u_ddi_translations_edp);
return skl_u_ddi_translations_edp;
} else {
*n_entries = ARRAY_SIZE(skl_ddi_translations_edp);
return skl_ddi_translations_edp;
}
}
if (IS_KABYLAKE(dev_priv) || IS_COFFEELAKE(dev_priv))
return kbl_get_buf_trans_dp(dev_priv, n_entries);
else
return skl_get_buf_trans_dp(dev_priv, n_entries);
}
static const struct ddi_buf_trans *
skl_get_buf_trans_hdmi(struct drm_i915_private *dev_priv, int *n_entries)
{
if (IS_SKL_ULX(dev_priv) || IS_KBL_ULX(dev_priv) || IS_AML_ULX(dev_priv)) {
*n_entries = ARRAY_SIZE(skl_y_ddi_translations_hdmi);
return skl_y_ddi_translations_hdmi;
} else {
*n_entries = ARRAY_SIZE(skl_ddi_translations_hdmi);
return skl_ddi_translations_hdmi;
}
}
static int skl_buf_trans_num_entries(enum port port, int n_entries)
{
/* Only DDIA and DDIE can select the 10th register with DP */
if (port == PORT_A || port == PORT_E)
return min(n_entries, 10);
else
return min(n_entries, 9);
}
static const struct ddi_buf_trans *
intel_ddi_get_buf_trans_dp(struct drm_i915_private *dev_priv,
enum port port, int *n_entries)
{
if (IS_KABYLAKE(dev_priv) || IS_COFFEELAKE(dev_priv)) {
const struct ddi_buf_trans *ddi_translations =
kbl_get_buf_trans_dp(dev_priv, n_entries);
*n_entries = skl_buf_trans_num_entries(port, *n_entries);
return ddi_translations;
} else if (IS_SKYLAKE(dev_priv)) {
const struct ddi_buf_trans *ddi_translations =
skl_get_buf_trans_dp(dev_priv, n_entries);
*n_entries = skl_buf_trans_num_entries(port, *n_entries);
return ddi_translations;
} else if (IS_BROADWELL(dev_priv)) {
*n_entries = ARRAY_SIZE(bdw_ddi_translations_dp);
return bdw_ddi_translations_dp;
} else if (IS_HASWELL(dev_priv)) {
*n_entries = ARRAY_SIZE(hsw_ddi_translations_dp);
return hsw_ddi_translations_dp;
}
*n_entries = 0;
return NULL;
}
static const struct ddi_buf_trans *
intel_ddi_get_buf_trans_edp(struct drm_i915_private *dev_priv,
enum port port, int *n_entries)
{
if (IS_GEN9_BC(dev_priv)) {
const struct ddi_buf_trans *ddi_translations =
skl_get_buf_trans_edp(dev_priv, n_entries);
*n_entries = skl_buf_trans_num_entries(port, *n_entries);
return ddi_translations;
} else if (IS_BROADWELL(dev_priv)) {
return bdw_get_buf_trans_edp(dev_priv, n_entries);
} else if (IS_HASWELL(dev_priv)) {
*n_entries = ARRAY_SIZE(hsw_ddi_translations_dp);
return hsw_ddi_translations_dp;
}
*n_entries = 0;
return NULL;
}
static const struct ddi_buf_trans *
intel_ddi_get_buf_trans_fdi(struct drm_i915_private *dev_priv,
int *n_entries)
{
if (IS_BROADWELL(dev_priv)) {
*n_entries = ARRAY_SIZE(bdw_ddi_translations_fdi);
return bdw_ddi_translations_fdi;
} else if (IS_HASWELL(dev_priv)) {
*n_entries = ARRAY_SIZE(hsw_ddi_translations_fdi);
return hsw_ddi_translations_fdi;
}
*n_entries = 0;
return NULL;
}
static const struct ddi_buf_trans *
intel_ddi_get_buf_trans_hdmi(struct drm_i915_private *dev_priv,
int *n_entries)
{
if (IS_GEN9_BC(dev_priv)) {
return skl_get_buf_trans_hdmi(dev_priv, n_entries);
} else if (IS_BROADWELL(dev_priv)) {
*n_entries = ARRAY_SIZE(bdw_ddi_translations_hdmi);
return bdw_ddi_translations_hdmi;
} else if (IS_HASWELL(dev_priv)) {
*n_entries = ARRAY_SIZE(hsw_ddi_translations_hdmi);
return hsw_ddi_translations_hdmi;
}
*n_entries = 0;
return NULL;
}
static const struct bxt_ddi_buf_trans *
bxt_get_buf_trans_dp(struct drm_i915_private *dev_priv, int *n_entries)
{
*n_entries = ARRAY_SIZE(bxt_ddi_translations_dp);
return bxt_ddi_translations_dp;
}
static const struct bxt_ddi_buf_trans *
bxt_get_buf_trans_edp(struct drm_i915_private *dev_priv, int *n_entries)
{
if (dev_priv->vbt.edp.low_vswing) {
*n_entries = ARRAY_SIZE(bxt_ddi_translations_edp);
return bxt_ddi_translations_edp;
}
return bxt_get_buf_trans_dp(dev_priv, n_entries);
}
static const struct bxt_ddi_buf_trans *
bxt_get_buf_trans_hdmi(struct drm_i915_private *dev_priv, int *n_entries)
{
*n_entries = ARRAY_SIZE(bxt_ddi_translations_hdmi);
return bxt_ddi_translations_hdmi;
}
static const struct cnl_ddi_buf_trans *
cnl_get_buf_trans_hdmi(struct drm_i915_private *dev_priv, int *n_entries)
{
u32 voltage = I915_READ(CNL_PORT_COMP_DW3) & VOLTAGE_INFO_MASK;
if (voltage == VOLTAGE_INFO_0_85V) {
*n_entries = ARRAY_SIZE(cnl_ddi_translations_hdmi_0_85V);
return cnl_ddi_translations_hdmi_0_85V;
} else if (voltage == VOLTAGE_INFO_0_95V) {
*n_entries = ARRAY_SIZE(cnl_ddi_translations_hdmi_0_95V);
return cnl_ddi_translations_hdmi_0_95V;
} else if (voltage == VOLTAGE_INFO_1_05V) {
*n_entries = ARRAY_SIZE(cnl_ddi_translations_hdmi_1_05V);
return cnl_ddi_translations_hdmi_1_05V;
} else {
*n_entries = 1; /* shut up gcc */
MISSING_CASE(voltage);
}
return NULL;
}
static const struct cnl_ddi_buf_trans *
cnl_get_buf_trans_dp(struct drm_i915_private *dev_priv, int *n_entries)
{
u32 voltage = I915_READ(CNL_PORT_COMP_DW3) & VOLTAGE_INFO_MASK;
if (voltage == VOLTAGE_INFO_0_85V) {
*n_entries = ARRAY_SIZE(cnl_ddi_translations_dp_0_85V);
return cnl_ddi_translations_dp_0_85V;
} else if (voltage == VOLTAGE_INFO_0_95V) {
*n_entries = ARRAY_SIZE(cnl_ddi_translations_dp_0_95V);
return cnl_ddi_translations_dp_0_95V;
} else if (voltage == VOLTAGE_INFO_1_05V) {
*n_entries = ARRAY_SIZE(cnl_ddi_translations_dp_1_05V);
return cnl_ddi_translations_dp_1_05V;
} else {
*n_entries = 1; /* shut up gcc */
MISSING_CASE(voltage);
}
return NULL;
}
static const struct cnl_ddi_buf_trans *
cnl_get_buf_trans_edp(struct drm_i915_private *dev_priv, int *n_entries)
{
u32 voltage = I915_READ(CNL_PORT_COMP_DW3) & VOLTAGE_INFO_MASK;
if (dev_priv->vbt.edp.low_vswing) {
if (voltage == VOLTAGE_INFO_0_85V) {
*n_entries = ARRAY_SIZE(cnl_ddi_translations_edp_0_85V);
return cnl_ddi_translations_edp_0_85V;
} else if (voltage == VOLTAGE_INFO_0_95V) {
*n_entries = ARRAY_SIZE(cnl_ddi_translations_edp_0_95V);
return cnl_ddi_translations_edp_0_95V;
} else if (voltage == VOLTAGE_INFO_1_05V) {
*n_entries = ARRAY_SIZE(cnl_ddi_translations_edp_1_05V);
return cnl_ddi_translations_edp_1_05V;
} else {
*n_entries = 1; /* shut up gcc */
MISSING_CASE(voltage);
}
return NULL;
} else {
return cnl_get_buf_trans_dp(dev_priv, n_entries);
}
}
static const struct cnl_ddi_buf_trans *
icl_get_combo_buf_trans(struct drm_i915_private *dev_priv, enum port port,
int type, int rate, int *n_entries)
{
if (type == INTEL_OUTPUT_HDMI) {
*n_entries = ARRAY_SIZE(icl_combo_phy_ddi_translations_hdmi);
return icl_combo_phy_ddi_translations_hdmi;
} else if (rate > 540000 && type == INTEL_OUTPUT_EDP) {
*n_entries = ARRAY_SIZE(icl_combo_phy_ddi_translations_edp_hbr3);
return icl_combo_phy_ddi_translations_edp_hbr3;
} else if (type == INTEL_OUTPUT_EDP && dev_priv->vbt.edp.low_vswing) {
*n_entries = ARRAY_SIZE(icl_combo_phy_ddi_translations_edp_hbr2);
return icl_combo_phy_ddi_translations_edp_hbr2;
}
*n_entries = ARRAY_SIZE(icl_combo_phy_ddi_translations_dp_hbr2);
return icl_combo_phy_ddi_translations_dp_hbr2;
}
static int intel_ddi_hdmi_level(struct drm_i915_private *dev_priv, enum port port)
{
int n_entries, level, default_entry;
level = dev_priv->vbt.ddi_port_info[port].hdmi_level_shift;
if (IS_ICELAKE(dev_priv)) {
if (intel_port_is_combophy(dev_priv, port))
icl_get_combo_buf_trans(dev_priv, port, INTEL_OUTPUT_HDMI,
0, &n_entries);
else
n_entries = ARRAY_SIZE(icl_mg_phy_ddi_translations);
default_entry = n_entries - 1;
} else if (IS_CANNONLAKE(dev_priv)) {
cnl_get_buf_trans_hdmi(dev_priv, &n_entries);
default_entry = n_entries - 1;
} else if (IS_GEN9_LP(dev_priv)) {
bxt_get_buf_trans_hdmi(dev_priv, &n_entries);
default_entry = n_entries - 1;
} else if (IS_GEN9_BC(dev_priv)) {
intel_ddi_get_buf_trans_hdmi(dev_priv, &n_entries);
default_entry = 8;
} else if (IS_BROADWELL(dev_priv)) {
intel_ddi_get_buf_trans_hdmi(dev_priv, &n_entries);
default_entry = 7;
} else if (IS_HASWELL(dev_priv)) {
intel_ddi_get_buf_trans_hdmi(dev_priv, &n_entries);
default_entry = 6;
} else {
WARN(1, "ddi translation table missing\n");
return 0;
}
/* Choose a good default if VBT is badly populated */
if (level == HDMI_LEVEL_SHIFT_UNKNOWN || level >= n_entries)
level = default_entry;
if (WARN_ON_ONCE(n_entries == 0))
return 0;
if (WARN_ON_ONCE(level >= n_entries))
level = n_entries - 1;
return level;
}
/*
* Starting with Haswell, DDI port buffers must be programmed with correct
* values in advance. This function programs the correct values for
* DP/eDP/FDI use cases.
*/
static void intel_prepare_dp_ddi_buffers(struct intel_encoder *encoder,
const struct intel_crtc_state *crtc_state)
{
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
u32 iboost_bit = 0;
int i, n_entries;
enum port port = encoder->port;
const struct ddi_buf_trans *ddi_translations;
if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_ANALOG))
ddi_translations = intel_ddi_get_buf_trans_fdi(dev_priv,
&n_entries);
else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_EDP))
ddi_translations = intel_ddi_get_buf_trans_edp(dev_priv, port,
&n_entries);
else
ddi_translations = intel_ddi_get_buf_trans_dp(dev_priv, port,
&n_entries);
/* If we're boosting the current, set bit 31 of trans1 */
if (IS_GEN9_BC(dev_priv) &&
dev_priv->vbt.ddi_port_info[port].dp_boost_level)
iboost_bit = DDI_BUF_BALANCE_LEG_ENABLE;
for (i = 0; i < n_entries; i++) {
I915_WRITE(DDI_BUF_TRANS_LO(port, i),
ddi_translations[i].trans1 | iboost_bit);
I915_WRITE(DDI_BUF_TRANS_HI(port, i),
ddi_translations[i].trans2);
}
}
/*
* Starting with Haswell, DDI port buffers must be programmed with correct
* values in advance. This function programs the correct values for
* HDMI/DVI use cases.
*/
static void intel_prepare_hdmi_ddi_buffers(struct intel_encoder *encoder,
int level)
{
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
u32 iboost_bit = 0;
int n_entries;
enum port port = encoder->port;
const struct ddi_buf_trans *ddi_translations;
ddi_translations = intel_ddi_get_buf_trans_hdmi(dev_priv, &n_entries);
if (WARN_ON_ONCE(!ddi_translations))
return;
if (WARN_ON_ONCE(level >= n_entries))
level = n_entries - 1;
/* If we're boosting the current, set bit 31 of trans1 */
if (IS_GEN9_BC(dev_priv) &&
dev_priv->vbt.ddi_port_info[port].hdmi_boost_level)
iboost_bit = DDI_BUF_BALANCE_LEG_ENABLE;
/* Entry 9 is for HDMI: */
I915_WRITE(DDI_BUF_TRANS_LO(port, 9),
ddi_translations[level].trans1 | iboost_bit);
I915_WRITE(DDI_BUF_TRANS_HI(port, 9),
ddi_translations[level].trans2);
}
static void intel_wait_ddi_buf_idle(struct drm_i915_private *dev_priv,
enum port port)
{
i915_reg_t reg = DDI_BUF_CTL(port);
int i;
for (i = 0; i < 16; i++) {
udelay(1);
if (I915_READ(reg) & DDI_BUF_IS_IDLE)
return;
}
DRM_ERROR("Timeout waiting for DDI BUF %c idle bit\n", port_name(port));
}
static u32 hsw_pll_to_ddi_pll_sel(const struct intel_shared_dpll *pll)
{
switch (pll->info->id) {
case DPLL_ID_WRPLL1:
return PORT_CLK_SEL_WRPLL1;
case DPLL_ID_WRPLL2:
return PORT_CLK_SEL_WRPLL2;
case DPLL_ID_SPLL:
return PORT_CLK_SEL_SPLL;
case DPLL_ID_LCPLL_810:
return PORT_CLK_SEL_LCPLL_810;
case DPLL_ID_LCPLL_1350:
return PORT_CLK_SEL_LCPLL_1350;
case DPLL_ID_LCPLL_2700:
return PORT_CLK_SEL_LCPLL_2700;
default:
MISSING_CASE(pll->info->id);
return PORT_CLK_SEL_NONE;
}
}
static u32 icl_pll_to_ddi_clk_sel(struct intel_encoder *encoder,
const struct intel_crtc_state *crtc_state)
{
const struct intel_shared_dpll *pll = crtc_state->shared_dpll;
int clock = crtc_state->port_clock;
const enum intel_dpll_id id = pll->info->id;
switch (id) {
default:
/*
* DPLL_ID_ICL_DPLL0 and DPLL_ID_ICL_DPLL1 should not be used
* here, so do warn if this get passed in
*/
MISSING_CASE(id);
return DDI_CLK_SEL_NONE;
case DPLL_ID_ICL_TBTPLL:
switch (clock) {
case 162000:
return DDI_CLK_SEL_TBT_162;
case 270000:
return DDI_CLK_SEL_TBT_270;
case 540000:
return DDI_CLK_SEL_TBT_540;
case 810000:
return DDI_CLK_SEL_TBT_810;
default:
MISSING_CASE(clock);
return DDI_CLK_SEL_NONE;
}
case DPLL_ID_ICL_MGPLL1:
case DPLL_ID_ICL_MGPLL2:
case DPLL_ID_ICL_MGPLL3:
case DPLL_ID_ICL_MGPLL4:
return DDI_CLK_SEL_MG;
}
}
/* Starting with Haswell, different DDI ports can work in FDI mode for
* connection to the PCH-located connectors. For this, it is necessary to train
* both the DDI port and PCH receiver for the desired DDI buffer settings.
*
* The recommended port to work in FDI mode is DDI E, which we use here. Also,
* please note that when FDI mode is active on DDI E, it shares 2 lines with
* DDI A (which is used for eDP)
*/
void hsw_fdi_link_train(struct intel_crtc *crtc,
const struct intel_crtc_state *crtc_state)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_encoder *encoder;
u32 temp, i, rx_ctl_val, ddi_pll_sel;
for_each_encoder_on_crtc(dev, &crtc->base, encoder) {
WARN_ON(encoder->type != INTEL_OUTPUT_ANALOG);
intel_prepare_dp_ddi_buffers(encoder, crtc_state);
}
/* Set the FDI_RX_MISC pwrdn lanes and the 2 workarounds listed at the
* mode set "sequence for CRT port" document:
* - TP1 to TP2 time with the default value
* - FDI delay to 90h
*
* WaFDIAutoLinkSetTimingOverrride:hsw
*/
I915_WRITE(FDI_RX_MISC(PIPE_A), FDI_RX_PWRDN_LANE1_VAL(2) |
FDI_RX_PWRDN_LANE0_VAL(2) |
FDI_RX_TP1_TO_TP2_48 | FDI_RX_FDI_DELAY_90);
/* Enable the PCH Receiver FDI PLL */
rx_ctl_val = dev_priv->fdi_rx_config | FDI_RX_ENHANCE_FRAME_ENABLE |
FDI_RX_PLL_ENABLE |
FDI_DP_PORT_WIDTH(crtc_state->fdi_lanes);
I915_WRITE(FDI_RX_CTL(PIPE_A), rx_ctl_val);
POSTING_READ(FDI_RX_CTL(PIPE_A));
udelay(220);
/* Switch from Rawclk to PCDclk */
rx_ctl_val |= FDI_PCDCLK;
I915_WRITE(FDI_RX_CTL(PIPE_A), rx_ctl_val);
/* Configure Port Clock Select */
ddi_pll_sel = hsw_pll_to_ddi_pll_sel(crtc_state->shared_dpll);
I915_WRITE(PORT_CLK_SEL(PORT_E), ddi_pll_sel);
WARN_ON(ddi_pll_sel != PORT_CLK_SEL_SPLL);
/* Start the training iterating through available voltages and emphasis,
* testing each value twice. */
for (i = 0; i < ARRAY_SIZE(hsw_ddi_translations_fdi) * 2; i++) {
/* Configure DP_TP_CTL with auto-training */
I915_WRITE(DP_TP_CTL(PORT_E),
DP_TP_CTL_FDI_AUTOTRAIN |
DP_TP_CTL_ENHANCED_FRAME_ENABLE |
DP_TP_CTL_LINK_TRAIN_PAT1 |
DP_TP_CTL_ENABLE);
/* Configure and enable DDI_BUF_CTL for DDI E with next voltage.
* DDI E does not support port reversal, the functionality is
* achieved on the PCH side in FDI_RX_CTL, so no need to set the
* port reversal bit */
I915_WRITE(DDI_BUF_CTL(PORT_E),
DDI_BUF_CTL_ENABLE |
((crtc_state->fdi_lanes - 1) << 1) |
DDI_BUF_TRANS_SELECT(i / 2));
POSTING_READ(DDI_BUF_CTL(PORT_E));
udelay(600);
/* Program PCH FDI Receiver TU */
I915_WRITE(FDI_RX_TUSIZE1(PIPE_A), TU_SIZE(64));
/* Enable PCH FDI Receiver with auto-training */
rx_ctl_val |= FDI_RX_ENABLE | FDI_LINK_TRAIN_AUTO;
I915_WRITE(FDI_RX_CTL(PIPE_A), rx_ctl_val);
POSTING_READ(FDI_RX_CTL(PIPE_A));
/* Wait for FDI receiver lane calibration */
udelay(30);
/* Unset FDI_RX_MISC pwrdn lanes */
temp = I915_READ(FDI_RX_MISC(PIPE_A));
temp &= ~(FDI_RX_PWRDN_LANE1_MASK | FDI_RX_PWRDN_LANE0_MASK);
I915_WRITE(FDI_RX_MISC(PIPE_A), temp);
POSTING_READ(FDI_RX_MISC(PIPE_A));
/* Wait for FDI auto training time */
udelay(5);
temp = I915_READ(DP_TP_STATUS(PORT_E));
if (temp & DP_TP_STATUS_AUTOTRAIN_DONE) {
DRM_DEBUG_KMS("FDI link training done on step %d\n", i);
break;
}
/*
* Leave things enabled even if we failed to train FDI.
* Results in less fireworks from the state checker.
*/
if (i == ARRAY_SIZE(hsw_ddi_translations_fdi) * 2 - 1) {
DRM_ERROR("FDI link training failed!\n");
break;
}
rx_ctl_val &= ~FDI_RX_ENABLE;
I915_WRITE(FDI_RX_CTL(PIPE_A), rx_ctl_val);
POSTING_READ(FDI_RX_CTL(PIPE_A));
temp = I915_READ(DDI_BUF_CTL(PORT_E));
temp &= ~DDI_BUF_CTL_ENABLE;
I915_WRITE(DDI_BUF_CTL(PORT_E), temp);
POSTING_READ(DDI_BUF_CTL(PORT_E));
/* Disable DP_TP_CTL and FDI_RX_CTL and retry */
temp = I915_READ(DP_TP_CTL(PORT_E));
temp &= ~(DP_TP_CTL_ENABLE | DP_TP_CTL_LINK_TRAIN_MASK);
temp |= DP_TP_CTL_LINK_TRAIN_PAT1;
I915_WRITE(DP_TP_CTL(PORT_E), temp);
POSTING_READ(DP_TP_CTL(PORT_E));
intel_wait_ddi_buf_idle(dev_priv, PORT_E);
/* Reset FDI_RX_MISC pwrdn lanes */
temp = I915_READ(FDI_RX_MISC(PIPE_A));
temp &= ~(FDI_RX_PWRDN_LANE1_MASK | FDI_RX_PWRDN_LANE0_MASK);
temp |= FDI_RX_PWRDN_LANE1_VAL(2) | FDI_RX_PWRDN_LANE0_VAL(2);
I915_WRITE(FDI_RX_MISC(PIPE_A), temp);
POSTING_READ(FDI_RX_MISC(PIPE_A));
}
/* Enable normal pixel sending for FDI */
I915_WRITE(DP_TP_CTL(PORT_E),
DP_TP_CTL_FDI_AUTOTRAIN |
DP_TP_CTL_LINK_TRAIN_NORMAL |
DP_TP_CTL_ENHANCED_FRAME_ENABLE |
DP_TP_CTL_ENABLE);
}
static void intel_ddi_init_dp_buf_reg(struct intel_encoder *encoder)
{
struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base);
struct intel_digital_port *intel_dig_port =
enc_to_dig_port(&encoder->base);
intel_dp->DP = intel_dig_port->saved_port_bits |
DDI_BUF_CTL_ENABLE | DDI_BUF_TRANS_SELECT(0);
intel_dp->DP |= DDI_PORT_WIDTH(intel_dp->lane_count);
}
static struct intel_encoder *
intel_ddi_get_crtc_encoder(struct intel_crtc *crtc)
{
struct drm_device *dev = crtc->base.dev;
struct intel_encoder *encoder, *ret = NULL;
int num_encoders = 0;
for_each_encoder_on_crtc(dev, &crtc->base, encoder) {
ret = encoder;
num_encoders++;
}
if (num_encoders != 1)
WARN(1, "%d encoders on crtc for pipe %c\n", num_encoders,
pipe_name(crtc->pipe));
BUG_ON(ret == NULL);
return ret;
}
#define LC_FREQ 2700
static int hsw_ddi_calc_wrpll_link(struct drm_i915_private *dev_priv,
i915_reg_t reg)
{
int refclk = LC_FREQ;
int n, p, r;
u32 wrpll;
wrpll = I915_READ(reg);
switch (wrpll & WRPLL_PLL_REF_MASK) {
case WRPLL_PLL_SSC:
case WRPLL_PLL_NON_SSC:
/*
* We could calculate spread here, but our checking
* code only cares about 5% accuracy, and spread is a max of
* 0.5% downspread.
*/
refclk = 135;
break;
case WRPLL_PLL_LCPLL:
refclk = LC_FREQ;
break;
default:
WARN(1, "bad wrpll refclk\n");
return 0;
}
r = wrpll & WRPLL_DIVIDER_REF_MASK;
p = (wrpll & WRPLL_DIVIDER_POST_MASK) >> WRPLL_DIVIDER_POST_SHIFT;
n = (wrpll & WRPLL_DIVIDER_FB_MASK) >> WRPLL_DIVIDER_FB_SHIFT;
/* Convert to KHz, p & r have a fixed point portion */
return (refclk * n * 100) / (p * r);
}
static int skl_calc_wrpll_link(struct drm_i915_private *dev_priv,
enum intel_dpll_id pll_id)
{
i915_reg_t cfgcr1_reg, cfgcr2_reg;
u32 cfgcr1_val, cfgcr2_val;
u32 p0, p1, p2, dco_freq;
cfgcr1_reg = DPLL_CFGCR1(pll_id);
cfgcr2_reg = DPLL_CFGCR2(pll_id);
cfgcr1_val = I915_READ(cfgcr1_reg);
cfgcr2_val = I915_READ(cfgcr2_reg);
p0 = cfgcr2_val & DPLL_CFGCR2_PDIV_MASK;
p2 = cfgcr2_val & DPLL_CFGCR2_KDIV_MASK;
if (cfgcr2_val & DPLL_CFGCR2_QDIV_MODE(1))
p1 = (cfgcr2_val & DPLL_CFGCR2_QDIV_RATIO_MASK) >> 8;
else
p1 = 1;
switch (p0) {
case DPLL_CFGCR2_PDIV_1:
p0 = 1;
break;
case DPLL_CFGCR2_PDIV_2:
p0 = 2;
break;
case DPLL_CFGCR2_PDIV_3:
p0 = 3;
break;
case DPLL_CFGCR2_PDIV_7:
p0 = 7;
break;
}
switch (p2) {
case DPLL_CFGCR2_KDIV_5:
p2 = 5;
break;
case DPLL_CFGCR2_KDIV_2:
p2 = 2;
break;
case DPLL_CFGCR2_KDIV_3:
p2 = 3;
break;
case DPLL_CFGCR2_KDIV_1:
p2 = 1;
break;
}
dco_freq = (cfgcr1_val & DPLL_CFGCR1_DCO_INTEGER_MASK) * 24 * 1000;
dco_freq += (((cfgcr1_val & DPLL_CFGCR1_DCO_FRACTION_MASK) >> 9) * 24 *
1000) / 0x8000;
if (WARN_ON(p0 == 0 || p1 == 0 || p2 == 0))
return 0;
return dco_freq / (p0 * p1 * p2 * 5);
}
int cnl_calc_wrpll_link(struct drm_i915_private *dev_priv,
enum intel_dpll_id pll_id)
{
u32 cfgcr0, cfgcr1;
u32 p0, p1, p2, dco_freq, ref_clock;
if (INTEL_GEN(dev_priv) >= 11) {
cfgcr0 = I915_READ(ICL_DPLL_CFGCR0(pll_id));
cfgcr1 = I915_READ(ICL_DPLL_CFGCR1(pll_id));
} else {
cfgcr0 = I915_READ(CNL_DPLL_CFGCR0(pll_id));
cfgcr1 = I915_READ(CNL_DPLL_CFGCR1(pll_id));
}
p0 = cfgcr1 & DPLL_CFGCR1_PDIV_MASK;
p2 = cfgcr1 & DPLL_CFGCR1_KDIV_MASK;
if (cfgcr1 & DPLL_CFGCR1_QDIV_MODE(1))
p1 = (cfgcr1 & DPLL_CFGCR1_QDIV_RATIO_MASK) >>
DPLL_CFGCR1_QDIV_RATIO_SHIFT;
else
p1 = 1;
switch (p0) {
case DPLL_CFGCR1_PDIV_2:
p0 = 2;
break;
case DPLL_CFGCR1_PDIV_3:
p0 = 3;
break;
case DPLL_CFGCR1_PDIV_5:
p0 = 5;
break;
case DPLL_CFGCR1_PDIV_7:
p0 = 7;
break;
}
switch (p2) {
case DPLL_CFGCR1_KDIV_1:
p2 = 1;
break;
case DPLL_CFGCR1_KDIV_2:
p2 = 2;
break;
case DPLL_CFGCR1_KDIV_4:
p2 = 4;
break;
}
ref_clock = cnl_hdmi_pll_ref_clock(dev_priv);
dco_freq = (cfgcr0 & DPLL_CFGCR0_DCO_INTEGER_MASK) * ref_clock;
dco_freq += (((cfgcr0 & DPLL_CFGCR0_DCO_FRACTION_MASK) >>
DPLL_CFGCR0_DCO_FRACTION_SHIFT) * ref_clock) / 0x8000;
if (WARN_ON(p0 == 0 || p1 == 0 || p2 == 0))
return 0;
return dco_freq / (p0 * p1 * p2 * 5);
}
static int icl_calc_tbt_pll_link(struct drm_i915_private *dev_priv,
enum port port)
{
u32 val = I915_READ(DDI_CLK_SEL(port)) & DDI_CLK_SEL_MASK;
switch (val) {
case DDI_CLK_SEL_NONE:
return 0;
case DDI_CLK_SEL_TBT_162:
return 162000;
case DDI_CLK_SEL_TBT_270:
return 270000;
case DDI_CLK_SEL_TBT_540:
return 540000;
case DDI_CLK_SEL_TBT_810:
return 810000;
default:
MISSING_CASE(val);
return 0;
}
}
static int icl_calc_mg_pll_link(struct drm_i915_private *dev_priv,
enum port port)
{
enum tc_port tc_port = intel_port_to_tc(dev_priv, port);
u32 mg_pll_div0, mg_clktop_hsclkctl;
u32 m1, m2_int, m2_frac, div1, div2, refclk;
u64 tmp;
refclk = dev_priv->cdclk.hw.ref;
mg_pll_div0 = I915_READ(MG_PLL_DIV0(tc_port));
mg_clktop_hsclkctl = I915_READ(MG_CLKTOP2_HSCLKCTL(tc_port));
m1 = I915_READ(MG_PLL_DIV1(tc_port)) & MG_PLL_DIV1_FBPREDIV_MASK;
m2_int = mg_pll_div0 & MG_PLL_DIV0_FBDIV_INT_MASK;
m2_frac = (mg_pll_div0 & MG_PLL_DIV0_FRACNEN_H) ?
(mg_pll_div0 & MG_PLL_DIV0_FBDIV_FRAC_MASK) >>
MG_PLL_DIV0_FBDIV_FRAC_SHIFT : 0;
switch (mg_clktop_hsclkctl & MG_CLKTOP2_HSCLKCTL_HSDIV_RATIO_MASK) {
case MG_CLKTOP2_HSCLKCTL_HSDIV_RATIO_2:
div1 = 2;
break;
case MG_CLKTOP2_HSCLKCTL_HSDIV_RATIO_3:
div1 = 3;
break;
case MG_CLKTOP2_HSCLKCTL_HSDIV_RATIO_5:
div1 = 5;
break;
case MG_CLKTOP2_HSCLKCTL_HSDIV_RATIO_7:
div1 = 7;
break;
default:
MISSING_CASE(mg_clktop_hsclkctl);
return 0;
}
div2 = (mg_clktop_hsclkctl & MG_CLKTOP2_HSCLKCTL_DSDIV_RATIO_MASK) >>
MG_CLKTOP2_HSCLKCTL_DSDIV_RATIO_SHIFT;
/* div2 value of 0 is same as 1 means no div */
if (div2 == 0)
div2 = 1;
/*
* Adjust the original formula to delay the division by 2^22 in order to
* minimize possible rounding errors.
*/
tmp = (u64)m1 * m2_int * refclk +
(((u64)m1 * m2_frac * refclk) >> 22);
tmp = div_u64(tmp, 5 * div1 * div2);
return tmp;
}
static void ddi_dotclock_get(struct intel_crtc_state *pipe_config)
{
int dotclock;
if (pipe_config->has_pch_encoder)
dotclock = intel_dotclock_calculate(pipe_config->port_clock,
&pipe_config->fdi_m_n);
else if (intel_crtc_has_dp_encoder(pipe_config))
dotclock = intel_dotclock_calculate(pipe_config->port_clock,
&pipe_config->dp_m_n);
else if (pipe_config->has_hdmi_sink && pipe_config->pipe_bpp == 36)
dotclock = pipe_config->port_clock * 2 / 3;
else
dotclock = pipe_config->port_clock;
if (pipe_config->output_format == INTEL_OUTPUT_FORMAT_YCBCR420)
dotclock *= 2;
if (pipe_config->pixel_multiplier)
dotclock /= pipe_config->pixel_multiplier;
pipe_config->base.adjusted_mode.crtc_clock = dotclock;
}
static void icl_ddi_clock_get(struct intel_encoder *encoder,
struct intel_crtc_state *pipe_config)
{
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
enum port port = encoder->port;
int link_clock = 0;
u32 pll_id;
pll_id = intel_get_shared_dpll_id(dev_priv, pipe_config->shared_dpll);
if (intel_port_is_combophy(dev_priv, port)) {
if (intel_crtc_has_type(pipe_config, INTEL_OUTPUT_HDMI))
link_clock = cnl_calc_wrpll_link(dev_priv, pll_id);
else
link_clock = icl_calc_dp_combo_pll_link(dev_priv,
pll_id);
} else {
if (pll_id == DPLL_ID_ICL_TBTPLL)
link_clock = icl_calc_tbt_pll_link(dev_priv, port);
else
link_clock = icl_calc_mg_pll_link(dev_priv, port);
}
pipe_config->port_clock = link_clock;
ddi_dotclock_get(pipe_config);
}
static void cnl_ddi_clock_get(struct intel_encoder *encoder,
struct intel_crtc_state *pipe_config)
{
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
int link_clock = 0;
u32 cfgcr0;
enum intel_dpll_id pll_id;
pll_id = intel_get_shared_dpll_id(dev_priv, pipe_config->shared_dpll);
cfgcr0 = I915_READ(CNL_DPLL_CFGCR0(pll_id));
if (cfgcr0 & DPLL_CFGCR0_HDMI_MODE) {
link_clock = cnl_calc_wrpll_link(dev_priv, pll_id);
} else {
link_clock = cfgcr0 & DPLL_CFGCR0_LINK_RATE_MASK;
switch (link_clock) {
case DPLL_CFGCR0_LINK_RATE_810:
link_clock = 81000;
break;
case DPLL_CFGCR0_LINK_RATE_1080:
link_clock = 108000;
break;
case DPLL_CFGCR0_LINK_RATE_1350:
link_clock = 135000;
break;
case DPLL_CFGCR0_LINK_RATE_1620:
link_clock = 162000;
break;
case DPLL_CFGCR0_LINK_RATE_2160:
link_clock = 216000;
break;
case DPLL_CFGCR0_LINK_RATE_2700:
link_clock = 270000;
break;
case DPLL_CFGCR0_LINK_RATE_3240:
link_clock = 324000;
break;
case DPLL_CFGCR0_LINK_RATE_4050:
link_clock = 405000;
break;
default:
WARN(1, "Unsupported link rate\n");
break;
}
link_clock *= 2;
}
pipe_config->port_clock = link_clock;
ddi_dotclock_get(pipe_config);
}
static void skl_ddi_clock_get(struct intel_encoder *encoder,
struct intel_crtc_state *pipe_config)
{
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
int link_clock = 0;
u32 dpll_ctl1;
enum intel_dpll_id pll_id;
pll_id = intel_get_shared_dpll_id(dev_priv, pipe_config->shared_dpll);
dpll_ctl1 = I915_READ(DPLL_CTRL1);
if (dpll_ctl1 & DPLL_CTRL1_HDMI_MODE(pll_id)) {
link_clock = skl_calc_wrpll_link(dev_priv, pll_id);
} else {
link_clock = dpll_ctl1 & DPLL_CTRL1_LINK_RATE_MASK(pll_id);
link_clock >>= DPLL_CTRL1_LINK_RATE_SHIFT(pll_id);
switch (link_clock) {
case DPLL_CTRL1_LINK_RATE_810:
link_clock = 81000;
break;
case DPLL_CTRL1_LINK_RATE_1080:
link_clock = 108000;
break;
case DPLL_CTRL1_LINK_RATE_1350:
link_clock = 135000;
break;
case DPLL_CTRL1_LINK_RATE_1620:
link_clock = 162000;
break;
case DPLL_CTRL1_LINK_RATE_2160:
link_clock = 216000;
break;
case DPLL_CTRL1_LINK_RATE_2700:
link_clock = 270000;
break;
default:
WARN(1, "Unsupported link rate\n");
break;
}
link_clock *= 2;
}
pipe_config->port_clock = link_clock;
ddi_dotclock_get(pipe_config);
}
static void hsw_ddi_clock_get(struct intel_encoder *encoder,
struct intel_crtc_state *pipe_config)
{
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
int link_clock = 0;
u32 val, pll;
val = hsw_pll_to_ddi_pll_sel(pipe_config->shared_dpll);
switch (val & PORT_CLK_SEL_MASK) {
case PORT_CLK_SEL_LCPLL_810:
link_clock = 81000;
break;
case PORT_CLK_SEL_LCPLL_1350:
link_clock = 135000;
break;
case PORT_CLK_SEL_LCPLL_2700:
link_clock = 270000;
break;
case PORT_CLK_SEL_WRPLL1:
link_clock = hsw_ddi_calc_wrpll_link(dev_priv, WRPLL_CTL(0));
break;
case PORT_CLK_SEL_WRPLL2:
link_clock = hsw_ddi_calc_wrpll_link(dev_priv, WRPLL_CTL(1));
break;
case PORT_CLK_SEL_SPLL:
pll = I915_READ(SPLL_CTL) & SPLL_PLL_FREQ_MASK;
if (pll == SPLL_PLL_FREQ_810MHz)
link_clock = 81000;
else if (pll == SPLL_PLL_FREQ_1350MHz)
link_clock = 135000;
else if (pll == SPLL_PLL_FREQ_2700MHz)
link_clock = 270000;
else {
WARN(1, "bad spll freq\n");
return;
}
break;
default:
WARN(1, "bad port clock sel\n");
return;
}
pipe_config->port_clock = link_clock * 2;
ddi_dotclock_get(pipe_config);
}
static int bxt_calc_pll_link(struct intel_crtc_state *crtc_state)
{
struct intel_dpll_hw_state *state;
struct dpll clock;
/* For DDI ports we always use a shared PLL. */
if (WARN_ON(!crtc_state->shared_dpll))
return 0;
state = &crtc_state->dpll_hw_state;
clock.m1 = 2;
clock.m2 = (state->pll0 & PORT_PLL_M2_MASK) << 22;
if (state->pll3 & PORT_PLL_M2_FRAC_ENABLE)
clock.m2 |= state->pll2 & PORT_PLL_M2_FRAC_MASK;
clock.n = (state->pll1 & PORT_PLL_N_MASK) >> PORT_PLL_N_SHIFT;
clock.p1 = (state->ebb0 & PORT_PLL_P1_MASK) >> PORT_PLL_P1_SHIFT;
clock.p2 = (state->ebb0 & PORT_PLL_P2_MASK) >> PORT_PLL_P2_SHIFT;
return chv_calc_dpll_params(100000, &clock);
}
static void bxt_ddi_clock_get(struct intel_encoder *encoder,
struct intel_crtc_state *pipe_config)
{
pipe_config->port_clock = bxt_calc_pll_link(pipe_config);
ddi_dotclock_get(pipe_config);
}
static void intel_ddi_clock_get(struct intel_encoder *encoder,
struct intel_crtc_state *pipe_config)
{
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
if (IS_ICELAKE(dev_priv))
icl_ddi_clock_get(encoder, pipe_config);
else if (IS_CANNONLAKE(dev_priv))
cnl_ddi_clock_get(encoder, pipe_config);
else if (IS_GEN9_LP(dev_priv))
bxt_ddi_clock_get(encoder, pipe_config);
else if (IS_GEN9_BC(dev_priv))
skl_ddi_clock_get(encoder, pipe_config);
else if (INTEL_GEN(dev_priv) <= 8)
hsw_ddi_clock_get(encoder, pipe_config);
}
void intel_ddi_set_pipe_settings(const struct intel_crtc_state *crtc_state)
{
struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
u32 temp;
if (!intel_crtc_has_dp_encoder(crtc_state))
return;
WARN_ON(transcoder_is_dsi(cpu_transcoder));
temp = TRANS_MSA_SYNC_CLK;
if (crtc_state->limited_color_range)
temp |= TRANS_MSA_CEA_RANGE;
switch (crtc_state->pipe_bpp) {
case 18:
temp |= TRANS_MSA_6_BPC;
break;
case 24:
temp |= TRANS_MSA_8_BPC;
break;
case 30:
temp |= TRANS_MSA_10_BPC;
break;
case 36:
temp |= TRANS_MSA_12_BPC;
break;
default:
MISSING_CASE(crtc_state->pipe_bpp);
break;
}
/*
* As per DP 1.2 spec section 2.3.4.3 while sending
* YCBCR 444 signals we should program MSA MISC1/0 fields with
* colorspace information. The output colorspace encoding is BT601.
*/
if (crtc_state->output_format == INTEL_OUTPUT_FORMAT_YCBCR444)
temp |= TRANS_MSA_SAMPLING_444 | TRANS_MSA_CLRSP_YCBCR;
I915_WRITE(TRANS_MSA_MISC(cpu_transcoder), temp);
}
void intel_ddi_set_vc_payload_alloc(const struct intel_crtc_state *crtc_state,
bool state)
{
struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
u32 temp;
temp = I915_READ(TRANS_DDI_FUNC_CTL(cpu_transcoder));
if (state == true)
temp |= TRANS_DDI_DP_VC_PAYLOAD_ALLOC;
else
temp &= ~TRANS_DDI_DP_VC_PAYLOAD_ALLOC;
I915_WRITE(TRANS_DDI_FUNC_CTL(cpu_transcoder), temp);
}
void intel_ddi_enable_transcoder_func(const struct intel_crtc_state *crtc_state)
{
struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
struct intel_encoder *encoder = intel_ddi_get_crtc_encoder(crtc);
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
enum pipe pipe = crtc->pipe;
enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
enum port port = encoder->port;
u32 temp;
/* Enable TRANS_DDI_FUNC_CTL for the pipe to work in HDMI mode */
temp = TRANS_DDI_FUNC_ENABLE;
temp |= TRANS_DDI_SELECT_PORT(port);
switch (crtc_state->pipe_bpp) {
case 18:
temp |= TRANS_DDI_BPC_6;
break;
case 24:
temp |= TRANS_DDI_BPC_8;
break;
case 30:
temp |= TRANS_DDI_BPC_10;
break;
case 36:
temp |= TRANS_DDI_BPC_12;
break;
default:
BUG();
}
if (crtc_state->base.adjusted_mode.flags & DRM_MODE_FLAG_PVSYNC)
temp |= TRANS_DDI_PVSYNC;
if (crtc_state->base.adjusted_mode.flags & DRM_MODE_FLAG_PHSYNC)
temp |= TRANS_DDI_PHSYNC;
if (cpu_transcoder == TRANSCODER_EDP) {
switch (pipe) {
case PIPE_A:
/* On Haswell, can only use the always-on power well for
* eDP when not using the panel fitter, and when not
* using motion blur mitigation (which we don't
* support). */
if (IS_HASWELL(dev_priv) &&
(crtc_state->pch_pfit.enabled ||
crtc_state->pch_pfit.force_thru))
temp |= TRANS_DDI_EDP_INPUT_A_ONOFF;
else
temp |= TRANS_DDI_EDP_INPUT_A_ON;
break;
case PIPE_B:
temp |= TRANS_DDI_EDP_INPUT_B_ONOFF;
break;
case PIPE_C:
temp |= TRANS_DDI_EDP_INPUT_C_ONOFF;
break;
default:
BUG();
break;
}
}
if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI)) {
if (crtc_state->has_hdmi_sink)
temp |= TRANS_DDI_MODE_SELECT_HDMI;
else
temp |= TRANS_DDI_MODE_SELECT_DVI;
if (crtc_state->hdmi_scrambling)
temp |= TRANS_DDI_HDMI_SCRAMBLING;
if (crtc_state->hdmi_high_tmds_clock_ratio)
temp |= TRANS_DDI_HIGH_TMDS_CHAR_RATE;
} else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_ANALOG)) {
temp |= TRANS_DDI_MODE_SELECT_FDI;
temp |= (crtc_state->fdi_lanes - 1) << 1;
} else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DP_MST)) {
temp |= TRANS_DDI_MODE_SELECT_DP_MST;
temp |= DDI_PORT_WIDTH(crtc_state->lane_count);
} else {
temp |= TRANS_DDI_MODE_SELECT_DP_SST;
temp |= DDI_PORT_WIDTH(crtc_state->lane_count);
}
I915_WRITE(TRANS_DDI_FUNC_CTL(cpu_transcoder), temp);
}
void intel_ddi_disable_transcoder_func(const struct intel_crtc_state *crtc_state)
{
struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
i915_reg_t reg = TRANS_DDI_FUNC_CTL(cpu_transcoder);
u32 val = I915_READ(reg);
val &= ~(TRANS_DDI_FUNC_ENABLE | TRANS_DDI_PORT_MASK | TRANS_DDI_DP_VC_PAYLOAD_ALLOC);
val |= TRANS_DDI_PORT_NONE;
I915_WRITE(reg, val);
if (dev_priv->quirks & QUIRK_INCREASE_DDI_DISABLED_TIME &&
intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI)) {
DRM_DEBUG_KMS("Quirk Increase DDI disabled time\n");
/* Quirk time at 100ms for reliable operation */
msleep(100);
}
}
int intel_ddi_toggle_hdcp_signalling(struct intel_encoder *intel_encoder,
bool enable)
{
struct drm_device *dev = intel_encoder->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
intel_wakeref_t wakeref;
enum pipe pipe = 0;
int ret = 0;
u32 tmp;
wakeref = intel_display_power_get_if_enabled(dev_priv,
intel_encoder->power_domain);
if (WARN_ON(!wakeref))
return -ENXIO;
if (WARN_ON(!intel_encoder->get_hw_state(intel_encoder, &pipe))) {
ret = -EIO;
goto out;
}
tmp = I915_READ(TRANS_DDI_FUNC_CTL(pipe));
if (enable)
tmp |= TRANS_DDI_HDCP_SIGNALLING;
else
tmp &= ~TRANS_DDI_HDCP_SIGNALLING;
I915_WRITE(TRANS_DDI_FUNC_CTL(pipe), tmp);
out:
intel_display_power_put(dev_priv, intel_encoder->power_domain, wakeref);
return ret;
}
bool intel_ddi_connector_get_hw_state(struct intel_connector *intel_connector)
{
struct drm_device *dev = intel_connector->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_encoder *encoder = intel_connector->encoder;
int type = intel_connector->base.connector_type;
enum port port = encoder->port;
enum transcoder cpu_transcoder;
intel_wakeref_t wakeref;
enum pipe pipe = 0;
u32 tmp;
bool ret;
wakeref = intel_display_power_get_if_enabled(dev_priv,
encoder->power_domain);
if (!wakeref)
return false;
if (!encoder->get_hw_state(encoder, &pipe)) {
ret = false;
goto out;
}
if (port == PORT_A)
cpu_transcoder = TRANSCODER_EDP;
else
cpu_transcoder = (enum transcoder) pipe;
tmp = I915_READ(TRANS_DDI_FUNC_CTL(cpu_transcoder));
switch (tmp & TRANS_DDI_MODE_SELECT_MASK) {
case TRANS_DDI_MODE_SELECT_HDMI:
case TRANS_DDI_MODE_SELECT_DVI:
ret = type == DRM_MODE_CONNECTOR_HDMIA;
break;
case TRANS_DDI_MODE_SELECT_DP_SST:
ret = type == DRM_MODE_CONNECTOR_eDP ||
type == DRM_MODE_CONNECTOR_DisplayPort;
break;
case TRANS_DDI_MODE_SELECT_DP_MST:
/* if the transcoder is in MST state then
* connector isn't connected */
ret = false;
break;
case TRANS_DDI_MODE_SELECT_FDI:
ret = type == DRM_MODE_CONNECTOR_VGA;
break;
default:
ret = false;
break;
}
out:
intel_display_power_put(dev_priv, encoder->power_domain, wakeref);
return ret;
}
static void intel_ddi_get_encoder_pipes(struct intel_encoder *encoder,
u8 *pipe_mask, bool *is_dp_mst)
{
struct drm_device *dev = encoder->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
enum port port = encoder->port;
intel_wakeref_t wakeref;
enum pipe p;
u32 tmp;
u8 mst_pipe_mask;
*pipe_mask = 0;
*is_dp_mst = false;
wakeref = intel_display_power_get_if_enabled(dev_priv,
encoder->power_domain);
if (!wakeref)
return;
tmp = I915_READ(DDI_BUF_CTL(port));
if (!(tmp & DDI_BUF_CTL_ENABLE))
goto out;
if (port == PORT_A) {
tmp = I915_READ(TRANS_DDI_FUNC_CTL(TRANSCODER_EDP));
switch (tmp & TRANS_DDI_EDP_INPUT_MASK) {
default:
MISSING_CASE(tmp & TRANS_DDI_EDP_INPUT_MASK);
/* fallthrough */
case TRANS_DDI_EDP_INPUT_A_ON:
case TRANS_DDI_EDP_INPUT_A_ONOFF:
*pipe_mask = BIT(PIPE_A);
break;
case TRANS_DDI_EDP_INPUT_B_ONOFF:
*pipe_mask = BIT(PIPE_B);
break;
case TRANS_DDI_EDP_INPUT_C_ONOFF:
*pipe_mask = BIT(PIPE_C);
break;
}
goto out;
}
mst_pipe_mask = 0;
for_each_pipe(dev_priv, p) {
enum transcoder cpu_transcoder = (enum transcoder)p;
tmp = I915_READ(TRANS_DDI_FUNC_CTL(cpu_transcoder));
if ((tmp & TRANS_DDI_PORT_MASK) != TRANS_DDI_SELECT_PORT(port))
continue;
if ((tmp & TRANS_DDI_MODE_SELECT_MASK) ==
TRANS_DDI_MODE_SELECT_DP_MST)
mst_pipe_mask |= BIT(p);
*pipe_mask |= BIT(p);
}
if (!*pipe_mask)
DRM_DEBUG_KMS("No pipe for ddi port %c found\n",
port_name(port));
if (!mst_pipe_mask && hweight8(*pipe_mask) > 1) {
DRM_DEBUG_KMS("Multiple pipes for non DP-MST port %c (pipe_mask %02x)\n",
port_name(port), *pipe_mask);
*pipe_mask = BIT(ffs(*pipe_mask) - 1);
}
if (mst_pipe_mask && mst_pipe_mask != *pipe_mask)
DRM_DEBUG_KMS("Conflicting MST and non-MST encoders for port %c (pipe_mask %02x mst_pipe_mask %02x)\n",
port_name(port), *pipe_mask, mst_pipe_mask);
else
*is_dp_mst = mst_pipe_mask;
out:
if (*pipe_mask && IS_GEN9_LP(dev_priv)) {
tmp = I915_READ(BXT_PHY_CTL(port));
if ((tmp & (BXT_PHY_CMNLANE_POWERDOWN_ACK |
BXT_PHY_LANE_POWERDOWN_ACK |
BXT_PHY_LANE_ENABLED)) != BXT_PHY_LANE_ENABLED)
DRM_ERROR("Port %c enabled but PHY powered down? "
"(PHY_CTL %08x)\n", port_name(port), tmp);
}
intel_display_power_put(dev_priv, encoder->power_domain, wakeref);
}
bool intel_ddi_get_hw_state(struct intel_encoder *encoder,
enum pipe *pipe)
{
u8 pipe_mask;
bool is_mst;
intel_ddi_get_encoder_pipes(encoder, &pipe_mask, &is_mst);
if (is_mst || !pipe_mask)
return false;
*pipe = ffs(pipe_mask) - 1;
return true;
}
static inline enum intel_display_power_domain
intel_ddi_main_link_aux_domain(struct intel_digital_port *dig_port)
{
/* CNL+ HW requires corresponding AUX IOs to be powered up for PSR with
* DC states enabled at the same time, while for driver initiated AUX
* transfers we need the same AUX IOs to be powered but with DC states
* disabled. Accordingly use the AUX power domain here which leaves DC
* states enabled.
* However, for non-A AUX ports the corresponding non-EDP transcoders
* would have already enabled power well 2 and DC_OFF. This means we can
* acquire a wider POWER_DOMAIN_AUX_{B,C,D,F} reference instead of a
* specific AUX_IO reference without powering up any extra wells.
* Note that PSR is enabled only on Port A even though this function
* returns the correct domain for other ports too.
*/
return dig_port->aux_ch == AUX_CH_A ? POWER_DOMAIN_AUX_IO_A :
intel_aux_power_domain(dig_port);
}
static void intel_ddi_get_power_domains(struct intel_encoder *encoder,
struct intel_crtc_state *crtc_state)
{
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
struct intel_digital_port *dig_port;
/*
* TODO: Add support for MST encoders. Atm, the following should never
* happen since fake-MST encoders don't set their get_power_domains()
* hook.
*/
if (WARN_ON(intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DP_MST)))
return;
dig_port = enc_to_dig_port(&encoder->base);
intel_display_power_get(dev_priv, dig_port->ddi_io_power_domain);
/*
* AUX power is only needed for (e)DP mode, and for HDMI mode on TC
* ports.
*/
if (intel_crtc_has_dp_encoder(crtc_state) ||
intel_port_is_tc(dev_priv, encoder->port))
intel_display_power_get(dev_priv,
intel_ddi_main_link_aux_domain(dig_port));
/*
* VDSC power is needed when DSC is enabled
*/
if (crtc_state->dsc_params.compression_enable)
intel_display_power_get(dev_priv,
intel_dsc_power_domain(crtc_state));
}
void intel_ddi_enable_pipe_clock(const struct intel_crtc_state *crtc_state)
{
struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
struct intel_encoder *encoder = intel_ddi_get_crtc_encoder(crtc);
enum port port = encoder->port;
enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
if (cpu_transcoder != TRANSCODER_EDP)
I915_WRITE(TRANS_CLK_SEL(cpu_transcoder),
TRANS_CLK_SEL_PORT(port));
}
void intel_ddi_disable_pipe_clock(const struct intel_crtc_state *crtc_state)
{
struct drm_i915_private *dev_priv = to_i915(crtc_state->base.crtc->dev);
enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
if (cpu_transcoder != TRANSCODER_EDP)
I915_WRITE(TRANS_CLK_SEL(cpu_transcoder),
TRANS_CLK_SEL_DISABLED);
}
static void _skl_ddi_set_iboost(struct drm_i915_private *dev_priv,
enum port port, u8 iboost)
{
u32 tmp;
tmp = I915_READ(DISPIO_CR_TX_BMU_CR0);
tmp &= ~(BALANCE_LEG_MASK(port) | BALANCE_LEG_DISABLE(port));
if (iboost)
tmp |= iboost << BALANCE_LEG_SHIFT(port);
else
tmp |= BALANCE_LEG_DISABLE(port);
I915_WRITE(DISPIO_CR_TX_BMU_CR0, tmp);
}
static void skl_ddi_set_iboost(struct intel_encoder *encoder,
int level, enum intel_output_type type)
{
struct intel_digital_port *intel_dig_port = enc_to_dig_port(&encoder->base);
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
enum port port = encoder->port;
u8 iboost;
if (type == INTEL_OUTPUT_HDMI)
iboost = dev_priv->vbt.ddi_port_info[port].hdmi_boost_level;
else
iboost = dev_priv->vbt.ddi_port_info[port].dp_boost_level;
if (iboost == 0) {
const struct ddi_buf_trans *ddi_translations;
int n_entries;
if (type == INTEL_OUTPUT_HDMI)
ddi_translations = intel_ddi_get_buf_trans_hdmi(dev_priv, &n_entries);
else if (type == INTEL_OUTPUT_EDP)
ddi_translations = intel_ddi_get_buf_trans_edp(dev_priv, port, &n_entries);
else
ddi_translations = intel_ddi_get_buf_trans_dp(dev_priv, port, &n_entries);
if (WARN_ON_ONCE(!ddi_translations))
return;
if (WARN_ON_ONCE(level >= n_entries))
level = n_entries - 1;
iboost = ddi_translations[level].i_boost;
}
/* Make sure that the requested I_boost is valid */
if (iboost && iboost != 0x1 && iboost != 0x3 && iboost != 0x7) {
DRM_ERROR("Invalid I_boost value %u\n", iboost);
return;
}
_skl_ddi_set_iboost(dev_priv, port, iboost);
if (port == PORT_A && intel_dig_port->max_lanes == 4)
_skl_ddi_set_iboost(dev_priv, PORT_E, iboost);
}
static void bxt_ddi_vswing_sequence(struct intel_encoder *encoder,
int level, enum intel_output_type type)
{
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
const struct bxt_ddi_buf_trans *ddi_translations;
enum port port = encoder->port;
int n_entries;
if (type == INTEL_OUTPUT_HDMI)
ddi_translations = bxt_get_buf_trans_hdmi(dev_priv, &n_entries);
else if (type == INTEL_OUTPUT_EDP)
ddi_translations = bxt_get_buf_trans_edp(dev_priv, &n_entries);
else
ddi_translations = bxt_get_buf_trans_dp(dev_priv, &n_entries);
if (WARN_ON_ONCE(!ddi_translations))
return;
if (WARN_ON_ONCE(level >= n_entries))
level = n_entries - 1;
bxt_ddi_phy_set_signal_level(dev_priv, port,
ddi_translations[level].margin,
ddi_translations[level].scale,
ddi_translations[level].enable,
ddi_translations[level].deemphasis);
}
u8 intel_ddi_dp_voltage_max(struct intel_encoder *encoder)
{
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base);
enum port port = encoder->port;
int n_entries;
if (IS_ICELAKE(dev_priv)) {
if (intel_port_is_combophy(dev_priv, port))
icl_get_combo_buf_trans(dev_priv, port, encoder->type,
intel_dp->link_rate, &n_entries);
else
n_entries = ARRAY_SIZE(icl_mg_phy_ddi_translations);
} else if (IS_CANNONLAKE(dev_priv)) {
if (encoder->type == INTEL_OUTPUT_EDP)
cnl_get_buf_trans_edp(dev_priv, &n_entries);
else
cnl_get_buf_trans_dp(dev_priv, &n_entries);
} else if (IS_GEN9_LP(dev_priv)) {
if (encoder->type == INTEL_OUTPUT_EDP)
bxt_get_buf_trans_edp(dev_priv, &n_entries);
else
bxt_get_buf_trans_dp(dev_priv, &n_entries);
} else {
if (encoder->type == INTEL_OUTPUT_EDP)
intel_ddi_get_buf_trans_edp(dev_priv, port, &n_entries);
else
intel_ddi_get_buf_trans_dp(dev_priv, port, &n_entries);
}
if (WARN_ON(n_entries < 1))
n_entries = 1;
if (WARN_ON(n_entries > ARRAY_SIZE(index_to_dp_signal_levels)))
n_entries = ARRAY_SIZE(index_to_dp_signal_levels);
return index_to_dp_signal_levels[n_entries - 1] &
DP_TRAIN_VOLTAGE_SWING_MASK;
}
/*
* We assume that the full set of pre-emphasis values can be
* used on all DDI platforms. Should that change we need to
* rethink this code.
*/
u8 intel_ddi_dp_pre_emphasis_max(struct intel_encoder *encoder, u8 voltage_swing)
{
switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) {
case DP_TRAIN_VOLTAGE_SWING_LEVEL_0:
return DP_TRAIN_PRE_EMPH_LEVEL_3;
case DP_TRAIN_VOLTAGE_SWING_LEVEL_1:
return DP_TRAIN_PRE_EMPH_LEVEL_2;
case DP_TRAIN_VOLTAGE_SWING_LEVEL_2:
return DP_TRAIN_PRE_EMPH_LEVEL_1;
case DP_TRAIN_VOLTAGE_SWING_LEVEL_3:
default:
return DP_TRAIN_PRE_EMPH_LEVEL_0;
}
}
static void cnl_ddi_vswing_program(struct intel_encoder *encoder,
int level, enum intel_output_type type)
{
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
const struct cnl_ddi_buf_trans *ddi_translations;
enum port port = encoder->port;
int n_entries, ln;
u32 val;
if (type == INTEL_OUTPUT_HDMI)
ddi_translations = cnl_get_buf_trans_hdmi(dev_priv, &n_entries);
else if (type == INTEL_OUTPUT_EDP)
ddi_translations = cnl_get_buf_trans_edp(dev_priv, &n_entries);
else
ddi_translations = cnl_get_buf_trans_dp(dev_priv, &n_entries);
if (WARN_ON_ONCE(!ddi_translations))
return;
if (WARN_ON_ONCE(level >= n_entries))
level = n_entries - 1;
/* Set PORT_TX_DW5 Scaling Mode Sel to 010b. */
val = I915_READ(CNL_PORT_TX_DW5_LN0(port));
val &= ~SCALING_MODE_SEL_MASK;
val |= SCALING_MODE_SEL(2);
I915_WRITE(CNL_PORT_TX_DW5_GRP(port), val);
/* Program PORT_TX_DW2 */
val = I915_READ(CNL_PORT_TX_DW2_LN0(port));
val &= ~(SWING_SEL_LOWER_MASK | SWING_SEL_UPPER_MASK |
RCOMP_SCALAR_MASK);
val |= SWING_SEL_UPPER(ddi_translations[level].dw2_swing_sel);
val |= SWING_SEL_LOWER(ddi_translations[level].dw2_swing_sel);
/* Rcomp scalar is fixed as 0x98 for every table entry */
val |= RCOMP_SCALAR(0x98);
I915_WRITE(CNL_PORT_TX_DW2_GRP(port), val);
/* Program PORT_TX_DW4 */
/* We cannot write to GRP. It would overrite individual loadgen */
for (ln = 0; ln < 4; ln++) {
val = I915_READ(CNL_PORT_TX_DW4_LN(port, ln));
val &= ~(POST_CURSOR_1_MASK | POST_CURSOR_2_MASK |
CURSOR_COEFF_MASK);
val |= POST_CURSOR_1(ddi_translations[level].dw4_post_cursor_1);
val |= POST_CURSOR_2(ddi_translations[level].dw4_post_cursor_2);
val |= CURSOR_COEFF(ddi_translations[level].dw4_cursor_coeff);
I915_WRITE(CNL_PORT_TX_DW4_LN(port, ln), val);
}
/* Program PORT_TX_DW5 */
/* All DW5 values are fixed for every table entry */
val = I915_READ(CNL_PORT_TX_DW5_LN0(port));
val &= ~RTERM_SELECT_MASK;
val |= RTERM_SELECT(6);
val |= TAP3_DISABLE;
I915_WRITE(CNL_PORT_TX_DW5_GRP(port), val);
/* Program PORT_TX_DW7 */
val = I915_READ(CNL_PORT_TX_DW7_LN0(port));
val &= ~N_SCALAR_MASK;
val |= N_SCALAR(ddi_translations[level].dw7_n_scalar);
I915_WRITE(CNL_PORT_TX_DW7_GRP(port), val);
}
static void cnl_ddi_vswing_sequence(struct intel_encoder *encoder,
int level, enum intel_output_type type)
{
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
enum port port = encoder->port;
int width, rate, ln;
u32 val;
if (type == INTEL_OUTPUT_HDMI) {
width = 4;
rate = 0; /* Rate is always < than 6GHz for HDMI */
} else {
struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base);
width = intel_dp->lane_count;
rate = intel_dp->link_rate;
}
/*
* 1. If port type is eDP or DP,
* set PORT_PCS_DW1 cmnkeeper_enable to 1b,
* else clear to 0b.
*/
val = I915_READ(CNL_PORT_PCS_DW1_LN0(port));
if (type != INTEL_OUTPUT_HDMI)
val |= COMMON_KEEPER_EN;
else
val &= ~COMMON_KEEPER_EN;
I915_WRITE(CNL_PORT_PCS_DW1_GRP(port), val);
/* 2. Program loadgen select */
/*
* Program PORT_TX_DW4_LN depending on Bit rate and used lanes
* <= 6 GHz and 4 lanes (LN0=0, LN1=1, LN2=1, LN3=1)
* <= 6 GHz and 1,2 lanes (LN0=0, LN1=1, LN2=1, LN3=0)
* > 6 GHz (LN0=0, LN1=0, LN2=0, LN3=0)
*/
for (ln = 0; ln <= 3; ln++) {
val = I915_READ(CNL_PORT_TX_DW4_LN(port, ln));
val &= ~LOADGEN_SELECT;
if ((rate <= 600000 && width == 4 && ln >= 1) ||
(rate <= 600000 && width < 4 && (ln == 1 || ln == 2))) {
val |= LOADGEN_SELECT;
}
I915_WRITE(CNL_PORT_TX_DW4_LN(port, ln), val);
}
/* 3. Set PORT_CL_DW5 SUS Clock Config to 11b */
val = I915_READ(CNL_PORT_CL1CM_DW5);
val |= SUS_CLOCK_CONFIG;
I915_WRITE(CNL_PORT_CL1CM_DW5, val);
/* 4. Clear training enable to change swing values */
val = I915_READ(CNL_PORT_TX_DW5_LN0(port));
val &= ~TX_TRAINING_EN;
I915_WRITE(CNL_PORT_TX_DW5_GRP(port), val);
/* 5. Program swing and de-emphasis */
cnl_ddi_vswing_program(encoder, level, type);
/* 6. Set training enable to trigger update */
val = I915_READ(CNL_PORT_TX_DW5_LN0(port));
val |= TX_TRAINING_EN;
I915_WRITE(CNL_PORT_TX_DW5_GRP(port), val);
}
static void icl_ddi_combo_vswing_program(struct drm_i915_private *dev_priv,
u32 level, enum port port, int type,
int rate)
{
const struct cnl_ddi_buf_trans *ddi_translations = NULL;
u32 n_entries, val;
int ln;
ddi_translations = icl_get_combo_buf_trans(dev_priv, port, type,
rate, &n_entries);
if (!ddi_translations)
return;
if (level >= n_entries) {
DRM_DEBUG_KMS("DDI translation not found for level %d. Using %d instead.", level, n_entries - 1);
level = n_entries - 1;
}
/* Set PORT_TX_DW5 */
val = I915_READ(ICL_PORT_TX_DW5_LN0(port));
val &= ~(SCALING_MODE_SEL_MASK | RTERM_SELECT_MASK |
TAP2_DISABLE | TAP3_DISABLE);
val |= SCALING_MODE_SEL(0x2);
val |= RTERM_SELECT(0x6);
val |= TAP3_DISABLE;
I915_WRITE(ICL_PORT_TX_DW5_GRP(port), val);
/* Program PORT_TX_DW2 */
val = I915_READ(ICL_PORT_TX_DW2_LN0(port));
val &= ~(SWING_SEL_LOWER_MASK | SWING_SEL_UPPER_MASK |
RCOMP_SCALAR_MASK);
val |= SWING_SEL_UPPER(ddi_translations[level].dw2_swing_sel);
val |= SWING_SEL_LOWER(ddi_translations[level].dw2_swing_sel);
/* Program Rcomp scalar for every table entry */
val |= RCOMP_SCALAR(0x98);
I915_WRITE(ICL_PORT_TX_DW2_GRP(port), val);
/* Program PORT_TX_DW4 */
/* We cannot write to GRP. It would overwrite individual loadgen. */
for (ln = 0; ln <= 3; ln++) {
val = I915_READ(ICL_PORT_TX_DW4_LN(port, ln));
val &= ~(POST_CURSOR_1_MASK | POST_CURSOR_2_MASK |
CURSOR_COEFF_MASK);
val |= POST_CURSOR_1(ddi_translations[level].dw4_post_cursor_1);
val |= POST_CURSOR_2(ddi_translations[level].dw4_post_cursor_2);
val |= CURSOR_COEFF(ddi_translations[level].dw4_cursor_coeff);
I915_WRITE(ICL_PORT_TX_DW4_LN(port, ln), val);
}
/* Program PORT_TX_DW7 */
val = I915_READ(ICL_PORT_TX_DW7_LN0(port));
val &= ~N_SCALAR_MASK;
val |= N_SCALAR(ddi_translations[level].dw7_n_scalar);
I915_WRITE(ICL_PORT_TX_DW7_GRP(port), val);
}
static void icl_combo_phy_ddi_vswing_sequence(struct intel_encoder *encoder,
u32 level,
enum intel_output_type type)
{
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
enum port port = encoder->port;
int width = 0;
int rate = 0;
u32 val;
int ln = 0;
if (type == INTEL_OUTPUT_HDMI) {
width = 4;
/* Rate is always < than 6GHz for HDMI */
} else {
struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base);
width = intel_dp->lane_count;
rate = intel_dp->link_rate;
}
/*
* 1. If port type is eDP or DP,
* set PORT_PCS_DW1 cmnkeeper_enable to 1b,
* else clear to 0b.
*/
val = I915_READ(ICL_PORT_PCS_DW1_LN0(port));
if (type == INTEL_OUTPUT_HDMI)
val &= ~COMMON_KEEPER_EN;
else
val |= COMMON_KEEPER_EN;
I915_WRITE(ICL_PORT_PCS_DW1_GRP(port), val);
/* 2. Program loadgen select */
/*
* Program PORT_TX_DW4_LN depending on Bit rate and used lanes
* <= 6 GHz and 4 lanes (LN0=0, LN1=1, LN2=1, LN3=1)
* <= 6 GHz and 1,2 lanes (LN0=0, LN1=1, LN2=1, LN3=0)
* > 6 GHz (LN0=0, LN1=0, LN2=0, LN3=0)
*/
for (ln = 0; ln <= 3; ln++) {
val = I915_READ(ICL_PORT_TX_DW4_LN(port, ln));
val &= ~LOADGEN_SELECT;
if ((rate <= 600000 && width == 4 && ln >= 1) ||
(rate <= 600000 && width < 4 && (ln == 1 || ln == 2))) {
val |= LOADGEN_SELECT;
}
I915_WRITE(ICL_PORT_TX_DW4_LN(port, ln), val);
}
/* 3. Set PORT_CL_DW5 SUS Clock Config to 11b */
val = I915_READ(ICL_PORT_CL_DW5(port));
val |= SUS_CLOCK_CONFIG;
I915_WRITE(ICL_PORT_CL_DW5(port), val);
/* 4. Clear training enable to change swing values */
val = I915_READ(ICL_PORT_TX_DW5_LN0(port));
val &= ~TX_TRAINING_EN;
I915_WRITE(ICL_PORT_TX_DW5_GRP(port), val);
/* 5. Program swing and de-emphasis */
icl_ddi_combo_vswing_program(dev_priv, level, port, type, rate);
/* 6. Set training enable to trigger update */
val = I915_READ(ICL_PORT_TX_DW5_LN0(port));
val |= TX_TRAINING_EN;
I915_WRITE(ICL_PORT_TX_DW5_GRP(port), val);
}
static void icl_mg_phy_ddi_vswing_sequence(struct intel_encoder *encoder,
int link_clock,
u32 level)
{
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
enum port port = encoder->port;
const struct icl_mg_phy_ddi_buf_trans *ddi_translations;
u32 n_entries, val;
int ln;
n_entries = ARRAY_SIZE(icl_mg_phy_ddi_translations);
ddi_translations = icl_mg_phy_ddi_translations;
/* The table does not have values for level 3 and level 9. */
if (level >= n_entries || level == 3 || level == 9) {
DRM_DEBUG_KMS("DDI translation not found for level %d. Using %d instead.",
level, n_entries - 2);
level = n_entries - 2;
}
/* Set MG_TX_LINK_PARAMS cri_use_fs32 to 0. */
for (ln = 0; ln < 2; ln++) {
val = I915_READ(MG_TX1_LINK_PARAMS(port, ln));
val &= ~CRI_USE_FS32;
I915_WRITE(MG_TX1_LINK_PARAMS(port, ln), val);
val = I915_READ(MG_TX2_LINK_PARAMS(port, ln));
val &= ~CRI_USE_FS32;
I915_WRITE(MG_TX2_LINK_PARAMS(port, ln), val);
}
/* Program MG_TX_SWINGCTRL with values from vswing table */
for (ln = 0; ln < 2; ln++) {
val = I915_READ(MG_TX1_SWINGCTRL(port, ln));
val &= ~CRI_TXDEEMPH_OVERRIDE_17_12_MASK;
val |= CRI_TXDEEMPH_OVERRIDE_17_12(
ddi_translations[level].cri_txdeemph_override_17_12);
I915_WRITE(MG_TX1_SWINGCTRL(port, ln), val);
val = I915_READ(MG_TX2_SWINGCTRL(port, ln));
val &= ~CRI_TXDEEMPH_OVERRIDE_17_12_MASK;
val |= CRI_TXDEEMPH_OVERRIDE_17_12(
ddi_translations[level].cri_txdeemph_override_17_12);
I915_WRITE(MG_TX2_SWINGCTRL(port, ln), val);
}
/* Program MG_TX_DRVCTRL with values from vswing table */
for (ln = 0; ln < 2; ln++) {
val = I915_READ(MG_TX1_DRVCTRL(port, ln));
val &= ~(CRI_TXDEEMPH_OVERRIDE_11_6_MASK |
CRI_TXDEEMPH_OVERRIDE_5_0_MASK);
val |= CRI_TXDEEMPH_OVERRIDE_5_0(
ddi_translations[level].cri_txdeemph_override_5_0) |
CRI_TXDEEMPH_OVERRIDE_11_6(
ddi_translations[level].cri_txdeemph_override_11_6) |
CRI_TXDEEMPH_OVERRIDE_EN;
I915_WRITE(MG_TX1_DRVCTRL(port, ln), val);
val = I915_READ(MG_TX2_DRVCTRL(port, ln));
val &= ~(CRI_TXDEEMPH_OVERRIDE_11_6_MASK |
CRI_TXDEEMPH_OVERRIDE_5_0_MASK);
val |= CRI_TXDEEMPH_OVERRIDE_5_0(
ddi_translations[level].cri_txdeemph_override_5_0) |
CRI_TXDEEMPH_OVERRIDE_11_6(
ddi_translations[level].cri_txdeemph_override_11_6) |
CRI_TXDEEMPH_OVERRIDE_EN;
I915_WRITE(MG_TX2_DRVCTRL(port, ln), val);
/* FIXME: Program CRI_LOADGEN_SEL after the spec is updated */
}
/*
* Program MG_CLKHUB<LN, port being used> with value from frequency table
* In case of Legacy mode on MG PHY, both TX1 and TX2 enabled so use the
* values from table for which TX1 and TX2 enabled.
*/
for (ln = 0; ln < 2; ln++) {
val = I915_READ(MG_CLKHUB(port, ln));
if (link_clock < 300000)
val |= CFG_LOW_RATE_LKREN_EN;
else
val &= ~CFG_LOW_RATE_LKREN_EN;
I915_WRITE(MG_CLKHUB(port, ln), val);
}
/* Program the MG_TX_DCC<LN, port being used> based on the link frequency */
for (ln = 0; ln < 2; ln++) {
val = I915_READ(MG_TX1_DCC(port, ln));
val &= ~CFG_AMI_CK_DIV_OVERRIDE_VAL_MASK;
if (link_clock <= 500000) {
val &= ~CFG_AMI_CK_DIV_OVERRIDE_EN;
} else {
val |= CFG_AMI_CK_DIV_OVERRIDE_EN |
CFG_AMI_CK_DIV_OVERRIDE_VAL(1);
}
I915_WRITE(MG_TX1_DCC(port, ln), val);
val = I915_READ(MG_TX2_DCC(port, ln));
val &= ~CFG_AMI_CK_DIV_OVERRIDE_VAL_MASK;
if (link_clock <= 500000) {
val &= ~CFG_AMI_CK_DIV_OVERRIDE_EN;
} else {
val |= CFG_AMI_CK_DIV_OVERRIDE_EN |
CFG_AMI_CK_DIV_OVERRIDE_VAL(1);
}
I915_WRITE(MG_TX2_DCC(port, ln), val);
}
/* Program MG_TX_PISO_READLOAD with values from vswing table */
for (ln = 0; ln < 2; ln++) {
val = I915_READ(MG_TX1_PISO_READLOAD(port, ln));
val |= CRI_CALCINIT;
I915_WRITE(MG_TX1_PISO_READLOAD(port, ln), val);
val = I915_READ(MG_TX2_PISO_READLOAD(port, ln));
val |= CRI_CALCINIT;
I915_WRITE(MG_TX2_PISO_READLOAD(port, ln), val);
}
}
static void icl_ddi_vswing_sequence(struct intel_encoder *encoder,
int link_clock,
u32 level,
enum intel_output_type type)
{
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
enum port port = encoder->port;
if (intel_port_is_combophy(dev_priv, port))
icl_combo_phy_ddi_vswing_sequence(encoder, level, type);
else
icl_mg_phy_ddi_vswing_sequence(encoder, link_clock, level);
}
static u32 translate_signal_level(int signal_levels)
{
int i;
for (i = 0; i < ARRAY_SIZE(index_to_dp_signal_levels); i++) {
if (index_to_dp_signal_levels[i] == signal_levels)
return i;
}
WARN(1, "Unsupported voltage swing/pre-emphasis level: 0x%x\n",
signal_levels);
return 0;
}
static u32 intel_ddi_dp_level(struct intel_dp *intel_dp)
{
u8 train_set = intel_dp->train_set[0];
int signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK |
DP_TRAIN_PRE_EMPHASIS_MASK);
return translate_signal_level(signal_levels);
}
u32 bxt_signal_levels(struct intel_dp *intel_dp)
{
struct intel_digital_port *dport = dp_to_dig_port(intel_dp);
struct drm_i915_private *dev_priv = to_i915(dport->base.base.dev);
struct intel_encoder *encoder = &dport->base;
int level = intel_ddi_dp_level(intel_dp);
if (IS_ICELAKE(dev_priv))
icl_ddi_vswing_sequence(encoder, intel_dp->link_rate,
level, encoder->type);
else if (IS_CANNONLAKE(dev_priv))
cnl_ddi_vswing_sequence(encoder, level, encoder->type);
else
bxt_ddi_vswing_sequence(encoder, level, encoder->type);
return 0;
}
u32 ddi_signal_levels(struct intel_dp *intel_dp)
{
struct intel_digital_port *dport = dp_to_dig_port(intel_dp);
struct drm_i915_private *dev_priv = to_i915(dport->base.base.dev);
struct intel_encoder *encoder = &dport->base;
int level = intel_ddi_dp_level(intel_dp);
if (IS_GEN9_BC(dev_priv))
skl_ddi_set_iboost(encoder, level, encoder->type);
return DDI_BUF_TRANS_SELECT(level);
}
static inline
u32 icl_dpclka_cfgcr0_clk_off(struct drm_i915_private *dev_priv,
enum port port)
{
if (intel_port_is_combophy(dev_priv, port)) {
return ICL_DPCLKA_CFGCR0_DDI_CLK_OFF(port);
} else if (intel_port_is_tc(dev_priv, port)) {
enum tc_port tc_port = intel_port_to_tc(dev_priv, port);
return ICL_DPCLKA_CFGCR0_TC_CLK_OFF(tc_port);
}
return 0;
}
static void icl_map_plls_to_ports(struct intel_encoder *encoder,
const struct intel_crtc_state *crtc_state)
{
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
struct intel_shared_dpll *pll = crtc_state->shared_dpll;
enum port port = encoder->port;
u32 val;
mutex_lock(&dev_priv->dpll_lock);
val = I915_READ(DPCLKA_CFGCR0_ICL);
WARN_ON((val & icl_dpclka_cfgcr0_clk_off(dev_priv, port)) == 0);
if (intel_port_is_combophy(dev_priv, port)) {
val &= ~DPCLKA_CFGCR0_DDI_CLK_SEL_MASK(port);
val |= DPCLKA_CFGCR0_DDI_CLK_SEL(pll->info->id, port);
I915_WRITE(DPCLKA_CFGCR0_ICL, val);
POSTING_READ(DPCLKA_CFGCR0_ICL);
}
val &= ~icl_dpclka_cfgcr0_clk_off(dev_priv, port);
I915_WRITE(DPCLKA_CFGCR0_ICL, val);
mutex_unlock(&dev_priv->dpll_lock);
}
static void icl_unmap_plls_to_ports(struct intel_encoder *encoder)
{
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
enum port port = encoder->port;
u32 val;
mutex_lock(&dev_priv->dpll_lock);
val = I915_READ(DPCLKA_CFGCR0_ICL);
val |= icl_dpclka_cfgcr0_clk_off(dev_priv, port);
I915_WRITE(DPCLKA_CFGCR0_ICL, val);
mutex_unlock(&dev_priv->dpll_lock);
}
void icl_sanitize_encoder_pll_mapping(struct intel_encoder *encoder)
{
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
u32 val;
enum port port;
u32 port_mask;
bool ddi_clk_needed;
/*
* In case of DP MST, we sanitize the primary encoder only, not the
* virtual ones.
*/
if (encoder->type == INTEL_OUTPUT_DP_MST)
return;
if (!encoder->base.crtc && intel_encoder_is_dp(encoder)) {
u8 pipe_mask;
bool is_mst;
intel_ddi_get_encoder_pipes(encoder, &pipe_mask, &is_mst);
/*
* In the unlikely case that BIOS enables DP in MST mode, just
* warn since our MST HW readout is incomplete.
*/
if (WARN_ON(is_mst))
return;
}
port_mask = BIT(encoder->port);
ddi_clk_needed = encoder->base.crtc;
if (encoder->type == INTEL_OUTPUT_DSI) {
struct intel_encoder *other_encoder;
port_mask = intel_dsi_encoder_ports(encoder);
/*
* Sanity check that we haven't incorrectly registered another
* encoder using any of the ports of this DSI encoder.
*/
for_each_intel_encoder(&dev_priv->drm, other_encoder) {
if (other_encoder == encoder)
continue;
if (WARN_ON(port_mask & BIT(other_encoder->port)))
return;
}
/*
* For DSI we keep the ddi clocks gated
* except during enable/disable sequence.
*/
ddi_clk_needed = false;
}
val = I915_READ(DPCLKA_CFGCR0_ICL);
for_each_port_masked(port, port_mask) {
bool ddi_clk_ungated = !(val &
icl_dpclka_cfgcr0_clk_off(dev_priv,
port));
if (ddi_clk_needed == ddi_clk_ungated)
continue;
/*
* Punt on the case now where clock is gated, but it would
* be needed by the port. Something else is really broken then.
*/
if (WARN_ON(ddi_clk_needed))
continue;
DRM_NOTE("Port %c is disabled/in DSI mode with an ungated DDI clock, gate it\n",
port_name(port));
val |= icl_dpclka_cfgcr0_clk_off(dev_priv, port);
I915_WRITE(DPCLKA_CFGCR0_ICL, val);
}
}
static void intel_ddi_clk_select(struct intel_encoder *encoder,
const struct intel_crtc_state *crtc_state)
{
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
enum port port = encoder->port;
u32 val;
const struct intel_shared_dpll *pll = crtc_state->shared_dpll;
if (WARN_ON(!pll))
return;
mutex_lock(&dev_priv->dpll_lock);
if (IS_ICELAKE(dev_priv)) {
if (!intel_port_is_combophy(dev_priv, port))
I915_WRITE(DDI_CLK_SEL(port),
icl_pll_to_ddi_clk_sel(encoder, crtc_state));
} else if (IS_CANNONLAKE(dev_priv)) {
/* Configure DPCLKA_CFGCR0 to map the DPLL to the DDI. */
val = I915_READ(DPCLKA_CFGCR0);
val &= ~DPCLKA_CFGCR0_DDI_CLK_SEL_MASK(port);
val |= DPCLKA_CFGCR0_DDI_CLK_SEL(pll->info->id, port);
I915_WRITE(DPCLKA_CFGCR0, val);
/*
* Configure DPCLKA_CFGCR0 to turn on the clock for the DDI.
* This step and the step before must be done with separate
* register writes.
*/
val = I915_READ(DPCLKA_CFGCR0);
val &= ~DPCLKA_CFGCR0_DDI_CLK_OFF(port);
I915_WRITE(DPCLKA_CFGCR0, val);
} else if (IS_GEN9_BC(dev_priv)) {
/* DDI -> PLL mapping */
val = I915_READ(DPLL_CTRL2);
val &= ~(DPLL_CTRL2_DDI_CLK_OFF(port) |
DPLL_CTRL2_DDI_CLK_SEL_MASK(port));
val |= (DPLL_CTRL2_DDI_CLK_SEL(pll->info->id, port) |
DPLL_CTRL2_DDI_SEL_OVERRIDE(port));
I915_WRITE(DPLL_CTRL2, val);
} else if (INTEL_GEN(dev_priv) < 9) {
I915_WRITE(PORT_CLK_SEL(port), hsw_pll_to_ddi_pll_sel(pll));
}
mutex_unlock(&dev_priv->dpll_lock);
}
static void intel_ddi_clk_disable(struct intel_encoder *encoder)
{
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
enum port port = encoder->port;
if (IS_ICELAKE(dev_priv)) {
if (!intel_port_is_combophy(dev_priv, port))
I915_WRITE(DDI_CLK_SEL(port), DDI_CLK_SEL_NONE);
} else if (IS_CANNONLAKE(dev_priv)) {
I915_WRITE(DPCLKA_CFGCR0, I915_READ(DPCLKA_CFGCR0) |
DPCLKA_CFGCR0_DDI_CLK_OFF(port));
} else if (IS_GEN9_BC(dev_priv)) {
I915_WRITE(DPLL_CTRL2, I915_READ(DPLL_CTRL2) |
DPLL_CTRL2_DDI_CLK_OFF(port));
} else if (INTEL_GEN(dev_priv) < 9) {
I915_WRITE(PORT_CLK_SEL(port), PORT_CLK_SEL_NONE);
}
}
static void icl_enable_phy_clock_gating(struct intel_digital_port *dig_port)
{
struct drm_i915_private *dev_priv = to_i915(dig_port->base.base.dev);
enum port port = dig_port->base.port;
enum tc_port tc_port = intel_port_to_tc(dev_priv, port);
i915_reg_t mg_regs[2] = { MG_DP_MODE(port, 0), MG_DP_MODE(port, 1) };
u32 val;
int i;
if (tc_port == PORT_TC_NONE)
return;
for (i = 0; i < ARRAY_SIZE(mg_regs); i++) {
val = I915_READ(mg_regs[i]);
val |= MG_DP_MODE_CFG_TR2PWR_GATING |
MG_DP_MODE_CFG_TRPWR_GATING |
MG_DP_MODE_CFG_CLNPWR_GATING |
MG_DP_MODE_CFG_DIGPWR_GATING |
MG_DP_MODE_CFG_GAONPWR_GATING;
I915_WRITE(mg_regs[i], val);
}
val = I915_READ(MG_MISC_SUS0(tc_port));
val |= MG_MISC_SUS0_SUSCLK_DYNCLKGATE_MODE(3) |
MG_MISC_SUS0_CFG_TR2PWR_GATING |
MG_MISC_SUS0_CFG_CL2PWR_GATING |
MG_MISC_SUS0_CFG_GAONPWR_GATING |
MG_MISC_SUS0_CFG_TRPWR_GATING |
MG_MISC_SUS0_CFG_CL1PWR_GATING |
MG_MISC_SUS0_CFG_DGPWR_GATING;
I915_WRITE(MG_MISC_SUS0(tc_port), val);
}
static void icl_disable_phy_clock_gating(struct intel_digital_port *dig_port)
{
struct drm_i915_private *dev_priv = to_i915(dig_port->base.base.dev);
enum port port = dig_port->base.port;
enum tc_port tc_port = intel_port_to_tc(dev_priv, port);
i915_reg_t mg_regs[2] = { MG_DP_MODE(port, 0), MG_DP_MODE(port, 1) };
u32 val;
int i;
if (tc_port == PORT_TC_NONE)
return;
for (i = 0; i < ARRAY_SIZE(mg_regs); i++) {
val = I915_READ(mg_regs[i]);
val &= ~(MG_DP_MODE_CFG_TR2PWR_GATING |
MG_DP_MODE_CFG_TRPWR_GATING |
MG_DP_MODE_CFG_CLNPWR_GATING |
MG_DP_MODE_CFG_DIGPWR_GATING |
MG_DP_MODE_CFG_GAONPWR_GATING);
I915_WRITE(mg_regs[i], val);
}
val = I915_READ(MG_MISC_SUS0(tc_port));
val &= ~(MG_MISC_SUS0_SUSCLK_DYNCLKGATE_MODE_MASK |
MG_MISC_SUS0_CFG_TR2PWR_GATING |
MG_MISC_SUS0_CFG_CL2PWR_GATING |
MG_MISC_SUS0_CFG_GAONPWR_GATING |
MG_MISC_SUS0_CFG_TRPWR_GATING |
MG_MISC_SUS0_CFG_CL1PWR_GATING |
MG_MISC_SUS0_CFG_DGPWR_GATING);
I915_WRITE(MG_MISC_SUS0(tc_port), val);
}
static void icl_program_mg_dp_mode(struct intel_digital_port *intel_dig_port)
{
struct drm_i915_private *dev_priv = to_i915(intel_dig_port->base.base.dev);
enum port port = intel_dig_port->base.port;
enum tc_port tc_port = intel_port_to_tc(dev_priv, port);
u32 ln0, ln1, lane_info;
if (tc_port == PORT_TC_NONE || intel_dig_port->tc_type == TC_PORT_TBT)
return;
ln0 = I915_READ(MG_DP_MODE(port, 0));
ln1 = I915_READ(MG_DP_MODE(port, 1));
switch (intel_dig_port->tc_type) {
case TC_PORT_TYPEC:
ln0 &= ~(MG_DP_MODE_CFG_DP_X1_MODE | MG_DP_MODE_CFG_DP_X2_MODE);
ln1 &= ~(MG_DP_MODE_CFG_DP_X1_MODE | MG_DP_MODE_CFG_DP_X2_MODE);
lane_info = (I915_READ(PORT_TX_DFLEXDPSP) &
DP_LANE_ASSIGNMENT_MASK(tc_port)) >>
DP_LANE_ASSIGNMENT_SHIFT(tc_port);
switch (lane_info) {
case 0x1:
case 0x4:
break;
case 0x2:
ln0 |= MG_DP_MODE_CFG_DP_X1_MODE;
break;
case 0x3:
ln0 |= MG_DP_MODE_CFG_DP_X1_MODE |
MG_DP_MODE_CFG_DP_X2_MODE;
break;
case 0x8:
ln1 |= MG_DP_MODE_CFG_DP_X1_MODE;
break;
case 0xC:
ln1 |= MG_DP_MODE_CFG_DP_X1_MODE |
MG_DP_MODE_CFG_DP_X2_MODE;
break;
case 0xF:
ln0 |= MG_DP_MODE_CFG_DP_X1_MODE |
MG_DP_MODE_CFG_DP_X2_MODE;
ln1 |= MG_DP_MODE_CFG_DP_X1_MODE |
MG_DP_MODE_CFG_DP_X2_MODE;
break;
default:
MISSING_CASE(lane_info);
}
break;
case TC_PORT_LEGACY:
ln0 |= MG_DP_MODE_CFG_DP_X1_MODE | MG_DP_MODE_CFG_DP_X2_MODE;
ln1 |= MG_DP_MODE_CFG_DP_X1_MODE | MG_DP_MODE_CFG_DP_X2_MODE;
break;
default:
MISSING_CASE(intel_dig_port->tc_type);
return;
}
I915_WRITE(MG_DP_MODE(port, 0), ln0);
I915_WRITE(MG_DP_MODE(port, 1), ln1);
}
static void intel_dp_sink_set_fec_ready(struct intel_dp *intel_dp,
const struct intel_crtc_state *crtc_state)
{
if (!crtc_state->fec_enable)
return;
if (drm_dp_dpcd_writeb(&intel_dp->aux, DP_FEC_CONFIGURATION, DP_FEC_READY) <= 0)
DRM_DEBUG_KMS("Failed to set FEC_READY in the sink\n");
}
static void intel_ddi_enable_fec(struct intel_encoder *encoder,
const struct intel_crtc_state *crtc_state)
{
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
enum port port = encoder->port;
u32 val;
if (!crtc_state->fec_enable)
return;
val = I915_READ(DP_TP_CTL(port));
val |= DP_TP_CTL_FEC_ENABLE;
I915_WRITE(DP_TP_CTL(port), val);
if (intel_wait_for_register(dev_priv, DP_TP_STATUS(port),
DP_TP_STATUS_FEC_ENABLE_LIVE,
DP_TP_STATUS_FEC_ENABLE_LIVE,
1))
DRM_ERROR("Timed out waiting for FEC Enable Status\n");
}
static void intel_ddi_disable_fec_state(struct intel_encoder *encoder,
const struct intel_crtc_state *crtc_state)
{
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
enum port port = encoder->port;
u32 val;
if (!crtc_state->fec_enable)
return;
val = I915_READ(DP_TP_CTL(port));
val &= ~DP_TP_CTL_FEC_ENABLE;
I915_WRITE(DP_TP_CTL(port), val);
POSTING_READ(DP_TP_CTL(port));
}
static void intel_ddi_pre_enable_dp(struct intel_encoder *encoder,
const struct intel_crtc_state *crtc_state,
const struct drm_connector_state *conn_state)
{
struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base);
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
enum port port = encoder->port;
struct intel_digital_port *dig_port = enc_to_dig_port(&encoder->base);
bool is_mst = intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DP_MST);
int level = intel_ddi_dp_level(intel_dp);
WARN_ON(is_mst && (port == PORT_A || port == PORT_E));
intel_dp_set_link_params(intel_dp, crtc_state->port_clock,
crtc_state->lane_count, is_mst);
intel_edp_panel_on(intel_dp);
intel_ddi_clk_select(encoder, crtc_state);
intel_display_power_get(dev_priv, dig_port->ddi_io_power_domain);
icl_program_mg_dp_mode(dig_port);
icl_disable_phy_clock_gating(dig_port);
if (IS_ICELAKE(dev_priv))
icl_ddi_vswing_sequence(encoder, crtc_state->port_clock,
level, encoder->type);
else if (IS_CANNONLAKE(dev_priv))
cnl_ddi_vswing_sequence(encoder, level, encoder->type);
else if (IS_GEN9_LP(dev_priv))
bxt_ddi_vswing_sequence(encoder, level, encoder->type);
else
intel_prepare_dp_ddi_buffers(encoder, crtc_state);
intel_ddi_init_dp_buf_reg(encoder);
if (!is_mst)
intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_ON);
intel_dp_sink_set_decompression_state(intel_dp, crtc_state,
true);
intel_dp_sink_set_fec_ready(intel_dp, crtc_state);
intel_dp_start_link_train(intel_dp);
if (port != PORT_A || INTEL_GEN(dev_priv) >= 9)
intel_dp_stop_link_train(intel_dp);
intel_ddi_enable_fec(encoder, crtc_state);
icl_enable_phy_clock_gating(dig_port);
if (!is_mst)
intel_ddi_enable_pipe_clock(crtc_state);
intel_dsc_enable(encoder, crtc_state);
}
static void intel_ddi_pre_enable_hdmi(struct intel_encoder *encoder,
const struct intel_crtc_state *crtc_state,
const struct drm_connector_state *conn_state)
{
struct intel_digital_port *intel_dig_port = enc_to_dig_port(&encoder->base);
struct intel_hdmi *intel_hdmi = &intel_dig_port->hdmi;
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
enum port port = encoder->port;
int level = intel_ddi_hdmi_level(dev_priv, port);
struct intel_digital_port *dig_port = enc_to_dig_port(&encoder->base);
intel_dp_dual_mode_set_tmds_output(intel_hdmi, true);
intel_ddi_clk_select(encoder, crtc_state);
intel_display_power_get(dev_priv, dig_port->ddi_io_power_domain);
icl_program_mg_dp_mode(dig_port);
icl_disable_phy_clock_gating(dig_port);
if (IS_ICELAKE(dev_priv))
icl_ddi_vswing_sequence(encoder, crtc_state->port_clock,
level, INTEL_OUTPUT_HDMI);
else if (IS_CANNONLAKE(dev_priv))
cnl_ddi_vswing_sequence(encoder, level, INTEL_OUTPUT_HDMI);
else if (IS_GEN9_LP(dev_priv))
bxt_ddi_vswing_sequence(encoder, level, INTEL_OUTPUT_HDMI);
else
intel_prepare_hdmi_ddi_buffers(encoder, level);
icl_enable_phy_clock_gating(dig_port);
if (IS_GEN9_BC(dev_priv))
skl_ddi_set_iboost(encoder, level, INTEL_OUTPUT_HDMI);
intel_ddi_enable_pipe_clock(crtc_state);
intel_dig_port->set_infoframes(encoder,
crtc_state->has_infoframe,
crtc_state, conn_state);
}
static void intel_ddi_pre_enable(struct intel_encoder *encoder,
const struct intel_crtc_state *crtc_state,
const struct drm_connector_state *conn_state)
{
struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
enum pipe pipe = crtc->pipe;
/*
* When called from DP MST code:
* - conn_state will be NULL
* - encoder will be the main encoder (ie. mst->primary)
* - the main connector associated with this port
* won't be active or linked to a crtc
* - crtc_state will be the state of the first stream to
* be activated on this port, and it may not be the same
* stream that will be deactivated last, but each stream
* should have a state that is identical when it comes to
* the DP link parameteres
*/
WARN_ON(crtc_state->has_pch_encoder);
if (INTEL_GEN(dev_priv) >= 11)
icl_map_plls_to_ports(encoder, crtc_state);
intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true);
if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI)) {
intel_ddi_pre_enable_hdmi(encoder, crtc_state, conn_state);
} else {
struct intel_lspcon *lspcon =
enc_to_intel_lspcon(&encoder->base);
intel_ddi_pre_enable_dp(encoder, crtc_state, conn_state);
if (lspcon->active) {
struct intel_digital_port *dig_port =
enc_to_dig_port(&encoder->base);
dig_port->set_infoframes(encoder,
crtc_state->has_infoframe,
crtc_state, conn_state);
}
}
}
static void intel_disable_ddi_buf(struct intel_encoder *encoder,
const struct intel_crtc_state *crtc_state)
{
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
enum port port = encoder->port;
bool wait = false;
u32 val;
val = I915_READ(DDI_BUF_CTL(port));
if (val & DDI_BUF_CTL_ENABLE) {
val &= ~DDI_BUF_CTL_ENABLE;
I915_WRITE(DDI_BUF_CTL(port), val);
wait = true;
}
val = I915_READ(DP_TP_CTL(port));
val &= ~(DP_TP_CTL_ENABLE | DP_TP_CTL_LINK_TRAIN_MASK);
val |= DP_TP_CTL_LINK_TRAIN_PAT1;
I915_WRITE(DP_TP_CTL(port), val);
/* Disable FEC in DP Sink */
intel_ddi_disable_fec_state(encoder, crtc_state);
if (wait)
intel_wait_ddi_buf_idle(dev_priv, port);
}
static void intel_ddi_post_disable_dp(struct intel_encoder *encoder,
const struct intel_crtc_state *old_crtc_state,
const struct drm_connector_state *old_conn_state)
{
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
struct intel_digital_port *dig_port = enc_to_dig_port(&encoder->base);
struct intel_dp *intel_dp = &dig_port->dp;
bool is_mst = intel_crtc_has_type(old_crtc_state,
INTEL_OUTPUT_DP_MST);
if (!is_mst) {
intel_ddi_disable_pipe_clock(old_crtc_state);
/*
* Power down sink before disabling the port, otherwise we end
* up getting interrupts from the sink on detecting link loss.
*/
intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_OFF);
}
intel_disable_ddi_buf(encoder, old_crtc_state);
intel_edp_panel_vdd_on(intel_dp);
intel_edp_panel_off(intel_dp);
intel_display_power_put_unchecked(dev_priv,
dig_port->ddi_io_power_domain);
intel_ddi_clk_disable(encoder);
}
static void intel_ddi_post_disable_hdmi(struct intel_encoder *encoder,
const struct intel_crtc_state *old_crtc_state,
const struct drm_connector_state *old_conn_state)
{
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
struct intel_digital_port *dig_port = enc_to_dig_port(&encoder->base);
struct intel_hdmi *intel_hdmi = &dig_port->hdmi;
dig_port->set_infoframes(encoder, false,
old_crtc_state, old_conn_state);
intel_ddi_disable_pipe_clock(old_crtc_state);
intel_disable_ddi_buf(encoder, old_crtc_state);
intel_display_power_put_unchecked(dev_priv,
dig_port->ddi_io_power_domain);
intel_ddi_clk_disable(encoder);
intel_dp_dual_mode_set_tmds_output(intel_hdmi, false);
}
static void intel_ddi_post_disable(struct intel_encoder *encoder,
const struct intel_crtc_state *old_crtc_state,
const struct drm_connector_state *old_conn_state)
{
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
/*
* When called from DP MST code:
* - old_conn_state will be NULL
* - encoder will be the main encoder (ie. mst->primary)
* - the main connector associated with this port
* won't be active or linked to a crtc
* - old_crtc_state will be the state of the last stream to
* be deactivated on this port, and it may not be the same
* stream that was activated last, but each stream
* should have a state that is identical when it comes to
* the DP link parameteres
*/
if (intel_crtc_has_type(old_crtc_state, INTEL_OUTPUT_HDMI))
intel_ddi_post_disable_hdmi(encoder,
old_crtc_state, old_conn_state);
else
intel_ddi_post_disable_dp(encoder,
old_crtc_state, old_conn_state);
if (INTEL_GEN(dev_priv) >= 11)
icl_unmap_plls_to_ports(encoder);
}
void intel_ddi_fdi_post_disable(struct intel_encoder *encoder,
const struct intel_crtc_state *old_crtc_state,
const struct drm_connector_state *old_conn_state)
{
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
u32 val;
/*
* Bspec lists this as both step 13 (before DDI_BUF_CTL disable)
* and step 18 (after clearing PORT_CLK_SEL). Based on a BUN,
* step 13 is the correct place for it. Step 18 is where it was
* originally before the BUN.
*/
val = I915_READ(FDI_RX_CTL(PIPE_A));
val &= ~FDI_RX_ENABLE;
I915_WRITE(FDI_RX_CTL(PIPE_A), val);
intel_disable_ddi_buf(encoder, old_crtc_state);
intel_ddi_clk_disable(encoder);
val = I915_READ(FDI_RX_MISC(PIPE_A));
val &= ~(FDI_RX_PWRDN_LANE1_MASK | FDI_RX_PWRDN_LANE0_MASK);
val |= FDI_RX_PWRDN_LANE1_VAL(2) | FDI_RX_PWRDN_LANE0_VAL(2);
I915_WRITE(FDI_RX_MISC(PIPE_A), val);
val = I915_READ(FDI_RX_CTL(PIPE_A));
val &= ~FDI_PCDCLK;
I915_WRITE(FDI_RX_CTL(PIPE_A), val);
val = I915_READ(FDI_RX_CTL(PIPE_A));
val &= ~FDI_RX_PLL_ENABLE;
I915_WRITE(FDI_RX_CTL(PIPE_A), val);
}
static void intel_enable_ddi_dp(struct intel_encoder *encoder,
const struct intel_crtc_state *crtc_state,
const struct drm_connector_state *conn_state)
{
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base);
enum port port = encoder->port;
if (port == PORT_A && INTEL_GEN(dev_priv) < 9)
intel_dp_stop_link_train(intel_dp);
intel_edp_backlight_on(crtc_state, conn_state);
intel_psr_enable(intel_dp, crtc_state);
intel_edp_drrs_enable(intel_dp, crtc_state);
if (crtc_state->has_audio)
intel_audio_codec_enable(encoder, crtc_state, conn_state);
}
static i915_reg_t
gen9_chicken_trans_reg_by_port(struct drm_i915_private *dev_priv,
enum port port)
{
static const i915_reg_t regs[] = {
[PORT_A] = CHICKEN_TRANS_EDP,
[PORT_B] = CHICKEN_TRANS_A,
[PORT_C] = CHICKEN_TRANS_B,
[PORT_D] = CHICKEN_TRANS_C,
[PORT_E] = CHICKEN_TRANS_A,
};
WARN_ON(INTEL_GEN(dev_priv) < 9);
if (WARN_ON(port < PORT_A || port > PORT_E))
port = PORT_A;
return regs[port];
}
static void intel_enable_ddi_hdmi(struct intel_encoder *encoder,
const struct intel_crtc_state *crtc_state,
const struct drm_connector_state *conn_state)
{
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
struct intel_digital_port *dig_port = enc_to_dig_port(&encoder->base);
struct drm_connector *connector = conn_state->connector;
enum port port = encoder->port;
if (!intel_hdmi_handle_sink_scrambling(encoder, connector,
crtc_state->hdmi_high_tmds_clock_ratio,
crtc_state->hdmi_scrambling))
DRM_ERROR("[CONNECTOR:%d:%s] Failed to configure sink scrambling/TMDS bit clock ratio\n",
connector->base.id, connector->name);
/* Display WA #1143: skl,kbl,cfl */
if (IS_GEN9_BC(dev_priv)) {
/*
* For some reason these chicken bits have been
* stuffed into a transcoder register, event though
* the bits affect a specific DDI port rather than
* a specific transcoder.
*/
i915_reg_t reg = gen9_chicken_trans_reg_by_port(dev_priv, port);
u32 val;
val = I915_READ(reg);
if (port == PORT_E)
val |= DDIE_TRAINING_OVERRIDE_ENABLE |
DDIE_TRAINING_OVERRIDE_VALUE;
else
val |= DDI_TRAINING_OVERRIDE_ENABLE |
DDI_TRAINING_OVERRIDE_VALUE;
I915_WRITE(reg, val);
POSTING_READ(reg);
udelay(1);
if (port == PORT_E)
val &= ~(DDIE_TRAINING_OVERRIDE_ENABLE |
DDIE_TRAINING_OVERRIDE_VALUE);
else
val &= ~(DDI_TRAINING_OVERRIDE_ENABLE |
DDI_TRAINING_OVERRIDE_VALUE);
I915_WRITE(reg, val);
}
/* In HDMI/DVI mode, the port width, and swing/emphasis values
* are ignored so nothing special needs to be done besides
* enabling the port.
*/
I915_WRITE(DDI_BUF_CTL(port),
dig_port->saved_port_bits | DDI_BUF_CTL_ENABLE);
if (crtc_state->has_audio)
intel_audio_codec_enable(encoder, crtc_state, conn_state);
}
static void intel_enable_ddi(struct intel_encoder *encoder,
const struct intel_crtc_state *crtc_state,
const struct drm_connector_state *conn_state)
{
if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI))
intel_enable_ddi_hdmi(encoder, crtc_state, conn_state);
else
intel_enable_ddi_dp(encoder, crtc_state, conn_state);
/* Enable hdcp if it's desired */
if (conn_state->content_protection ==
DRM_MODE_CONTENT_PROTECTION_DESIRED)
intel_hdcp_enable(to_intel_connector(conn_state->connector));
}
static void intel_disable_ddi_dp(struct intel_encoder *encoder,
const struct intel_crtc_state *old_crtc_state,
const struct drm_connector_state *old_conn_state)
{
struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base);
intel_dp->link_trained = false;
if (old_crtc_state->has_audio)
intel_audio_codec_disable(encoder,
old_crtc_state, old_conn_state);
intel_edp_drrs_disable(intel_dp, old_crtc_state);
intel_psr_disable(intel_dp, old_crtc_state);
intel_edp_backlight_off(old_conn_state);
/* Disable the decompression in DP Sink */
intel_dp_sink_set_decompression_state(intel_dp, old_crtc_state,
false);
}
static void intel_disable_ddi_hdmi(struct intel_encoder *encoder,
const struct intel_crtc_state *old_crtc_state,
const struct drm_connector_state *old_conn_state)
{
struct drm_connector *connector = old_conn_state->connector;
if (old_crtc_state->has_audio)
intel_audio_codec_disable(encoder,
old_crtc_state, old_conn_state);
if (!intel_hdmi_handle_sink_scrambling(encoder, connector,
false, false))
DRM_DEBUG_KMS("[CONNECTOR:%d:%s] Failed to reset sink scrambling/TMDS bit clock ratio\n",
connector->base.id, connector->name);
}
static void intel_disable_ddi(struct intel_encoder *encoder,
const struct intel_crtc_state *old_crtc_state,
const struct drm_connector_state *old_conn_state)
{
intel_hdcp_disable(to_intel_connector(old_conn_state->connector));
if (intel_crtc_has_type(old_crtc_state, INTEL_OUTPUT_HDMI))
intel_disable_ddi_hdmi(encoder, old_crtc_state, old_conn_state);
else
intel_disable_ddi_dp(encoder, old_crtc_state, old_conn_state);
}
static void intel_ddi_update_pipe_dp(struct intel_encoder *encoder,
const struct intel_crtc_state *crtc_state,
const struct drm_connector_state *conn_state)
{
struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base);
intel_psr_enable(intel_dp, crtc_state);
intel_edp_drrs_enable(intel_dp, crtc_state);
intel_panel_update_backlight(encoder, crtc_state, conn_state);
}
static void intel_ddi_update_pipe(struct intel_encoder *encoder,
const struct intel_crtc_state *crtc_state,
const struct drm_connector_state *conn_state)
{
if (!intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI))
intel_ddi_update_pipe_dp(encoder, crtc_state, conn_state);
if (conn_state->content_protection ==
DRM_MODE_CONTENT_PROTECTION_DESIRED)
intel_hdcp_enable(to_intel_connector(conn_state->connector));
else if (conn_state->content_protection ==
DRM_MODE_CONTENT_PROTECTION_UNDESIRED)
intel_hdcp_disable(to_intel_connector(conn_state->connector));
}
static void intel_ddi_set_fia_lane_count(struct intel_encoder *encoder,
const struct intel_crtc_state *pipe_config,
enum port port)
{
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
struct intel_digital_port *dig_port = enc_to_dig_port(&encoder->base);
enum tc_port tc_port = intel_port_to_tc(dev_priv, port);
u32 val = I915_READ(PORT_TX_DFLEXDPMLE1);
bool lane_reversal = dig_port->saved_port_bits & DDI_BUF_PORT_REVERSAL;
val &= ~DFLEXDPMLE1_DPMLETC_MASK(tc_port);
switch (pipe_config->lane_count) {
case 1:
val |= (lane_reversal) ? DFLEXDPMLE1_DPMLETC_ML3(tc_port) :
DFLEXDPMLE1_DPMLETC_ML0(tc_port);
break;
case 2:
val |= (lane_reversal) ? DFLEXDPMLE1_DPMLETC_ML3_2(tc_port) :
DFLEXDPMLE1_DPMLETC_ML1_0(tc_port);
break;
case 4:
val |= DFLEXDPMLE1_DPMLETC_ML3_0(tc_port);
break;
default:
MISSING_CASE(pipe_config->lane_count);
}
I915_WRITE(PORT_TX_DFLEXDPMLE1, val);
}
static void
intel_ddi_pre_pll_enable(struct intel_encoder *encoder,
const struct intel_crtc_state *crtc_state,
const struct drm_connector_state *conn_state)
{
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
struct intel_digital_port *dig_port = enc_to_dig_port(&encoder->base);
enum port port = encoder->port;
if (intel_crtc_has_dp_encoder(crtc_state) ||
intel_port_is_tc(dev_priv, encoder->port))
intel_display_power_get(dev_priv,
intel_ddi_main_link_aux_domain(dig_port));
if (IS_GEN9_LP(dev_priv))
bxt_ddi_phy_set_lane_optim_mask(encoder,
crtc_state->lane_lat_optim_mask);
/*
* Program the lane count for static/dynamic connections on Type-C ports.
* Skip this step for TBT.
*/
if (dig_port->tc_type == TC_PORT_UNKNOWN ||
dig_port->tc_type == TC_PORT_TBT)
return;
intel_ddi_set_fia_lane_count(encoder, crtc_state, port);
}
static void
intel_ddi_post_pll_disable(struct intel_encoder *encoder,
const struct intel_crtc_state *crtc_state,
const struct drm_connector_state *conn_state)
{
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
struct intel_digital_port *dig_port = enc_to_dig_port(&encoder->base);
if (intel_crtc_has_dp_encoder(crtc_state) ||
intel_port_is_tc(dev_priv, encoder->port))
intel_display_power_put_unchecked(dev_priv,
intel_ddi_main_link_aux_domain(dig_port));
}
void intel_ddi_prepare_link_retrain(struct intel_dp *intel_dp)
{
struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
struct drm_i915_private *dev_priv =
to_i915(intel_dig_port->base.base.dev);
enum port port = intel_dig_port->base.port;
u32 val;
bool wait = false;
if (I915_READ(DP_TP_CTL(port)) & DP_TP_CTL_ENABLE) {
val = I915_READ(DDI_BUF_CTL(port));
if (val & DDI_BUF_CTL_ENABLE) {
val &= ~DDI_BUF_CTL_ENABLE;
I915_WRITE(DDI_BUF_CTL(port), val);
wait = true;
}
val = I915_READ(DP_TP_CTL(port));
val &= ~(DP_TP_CTL_ENABLE | DP_TP_CTL_LINK_TRAIN_MASK);
val |= DP_TP_CTL_LINK_TRAIN_PAT1;
I915_WRITE(DP_TP_CTL(port), val);
POSTING_READ(DP_TP_CTL(port));
if (wait)
intel_wait_ddi_buf_idle(dev_priv, port);
}
val = DP_TP_CTL_ENABLE |
DP_TP_CTL_LINK_TRAIN_PAT1 | DP_TP_CTL_SCRAMBLE_DISABLE;
if (intel_dp->link_mst)
val |= DP_TP_CTL_MODE_MST;
else {
val |= DP_TP_CTL_MODE_SST;
if (drm_dp_enhanced_frame_cap(intel_dp->dpcd))
val |= DP_TP_CTL_ENHANCED_FRAME_ENABLE;
}
I915_WRITE(DP_TP_CTL(port), val);
POSTING_READ(DP_TP_CTL(port));
intel_dp->DP |= DDI_BUF_CTL_ENABLE;
I915_WRITE(DDI_BUF_CTL(port), intel_dp->DP);
POSTING_READ(DDI_BUF_CTL(port));
udelay(600);
}
static bool intel_ddi_is_audio_enabled(struct drm_i915_private *dev_priv,
enum transcoder cpu_transcoder)
{
if (cpu_transcoder == TRANSCODER_EDP)
return false;
if (!intel_display_power_is_enabled(dev_priv, POWER_DOMAIN_AUDIO))
return false;
return I915_READ(HSW_AUD_PIN_ELD_CP_VLD) &
AUDIO_OUTPUT_ENABLE(cpu_transcoder);
}
void intel_ddi_compute_min_voltage_level(struct drm_i915_private *dev_priv,
struct intel_crtc_state *crtc_state)
{
if (IS_ICELAKE(dev_priv) && crtc_state->port_clock > 594000)
crtc_state->min_voltage_level = 1;
else if (IS_CANNONLAKE(dev_priv) && crtc_state->port_clock > 594000)
crtc_state->min_voltage_level = 2;
}
void intel_ddi_get_config(struct intel_encoder *encoder,
struct intel_crtc_state *pipe_config)
{
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
struct intel_crtc *intel_crtc = to_intel_crtc(pipe_config->base.crtc);
enum transcoder cpu_transcoder = pipe_config->cpu_transcoder;
struct intel_digital_port *intel_dig_port;
u32 temp, flags = 0;
/* XXX: DSI transcoder paranoia */
if (WARN_ON(transcoder_is_dsi(cpu_transcoder)))
return;
temp = I915_READ(TRANS_DDI_FUNC_CTL(cpu_transcoder));
if (temp & TRANS_DDI_PHSYNC)
flags |= DRM_MODE_FLAG_PHSYNC;
else
flags |= DRM_MODE_FLAG_NHSYNC;
if (temp & TRANS_DDI_PVSYNC)
flags |= DRM_MODE_FLAG_PVSYNC;
else
flags |= DRM_MODE_FLAG_NVSYNC;
pipe_config->base.adjusted_mode.flags |= flags;
switch (temp & TRANS_DDI_BPC_MASK) {
case TRANS_DDI_BPC_6:
pipe_config->pipe_bpp = 18;
break;
case TRANS_DDI_BPC_8:
pipe_config->pipe_bpp = 24;
break;
case TRANS_DDI_BPC_10:
pipe_config->pipe_bpp = 30;
break;
case TRANS_DDI_BPC_12:
pipe_config->pipe_bpp = 36;
break;
default:
break;
}
switch (temp & TRANS_DDI_MODE_SELECT_MASK) {
case TRANS_DDI_MODE_SELECT_HDMI:
pipe_config->has_hdmi_sink = true;
intel_dig_port = enc_to_dig_port(&encoder->base);
if (intel_dig_port->infoframe_enabled(encoder, pipe_config))
pipe_config->has_infoframe = true;
if (temp & TRANS_DDI_HDMI_SCRAMBLING)
pipe_config->hdmi_scrambling = true;
if (temp & TRANS_DDI_HIGH_TMDS_CHAR_RATE)
pipe_config->hdmi_high_tmds_clock_ratio = true;
/* fall through */
case TRANS_DDI_MODE_SELECT_DVI:
pipe_config->output_types |= BIT(INTEL_OUTPUT_HDMI);
pipe_config->lane_count = 4;
break;
case TRANS_DDI_MODE_SELECT_FDI:
pipe_config->output_types |= BIT(INTEL_OUTPUT_ANALOG);
break;
case TRANS_DDI_MODE_SELECT_DP_SST:
if (encoder->type == INTEL_OUTPUT_EDP)
pipe_config->output_types |= BIT(INTEL_OUTPUT_EDP);
else
pipe_config->output_types |= BIT(INTEL_OUTPUT_DP);
pipe_config->lane_count =
((temp & DDI_PORT_WIDTH_MASK) >> DDI_PORT_WIDTH_SHIFT) + 1;
intel_dp_get_m_n(intel_crtc, pipe_config);
break;
case TRANS_DDI_MODE_SELECT_DP_MST:
pipe_config->output_types |= BIT(INTEL_OUTPUT_DP_MST);
pipe_config->lane_count =
((temp & DDI_PORT_WIDTH_MASK) >> DDI_PORT_WIDTH_SHIFT) + 1;
intel_dp_get_m_n(intel_crtc, pipe_config);
break;
default:
break;
}
pipe_config->has_audio =
intel_ddi_is_audio_enabled(dev_priv, cpu_transcoder);
if (encoder->type == INTEL_OUTPUT_EDP && dev_priv->vbt.edp.bpp &&
pipe_config->pipe_bpp > dev_priv->vbt.edp.bpp) {
/*
* This is a big fat ugly hack.
*
* Some machines in UEFI boot mode provide us a VBT that has 18
* bpp and 1.62 GHz link bandwidth for eDP, which for reasons
* unknown we fail to light up. Yet the same BIOS boots up with
* 24 bpp and 2.7 GHz link. Use the same bpp as the BIOS uses as
* max, not what it tells us to use.
*
* Note: This will still be broken if the eDP panel is not lit
* up by the BIOS, and thus we can't get the mode at module
* load.
*/
DRM_DEBUG_KMS("pipe has %d bpp for eDP panel, overriding BIOS-provided max %d bpp\n",
pipe_config->pipe_bpp, dev_priv->vbt.edp.bpp);
dev_priv->vbt.edp.bpp = pipe_config->pipe_bpp;
}
intel_ddi_clock_get(encoder, pipe_config);
if (IS_GEN9_LP(dev_priv))
pipe_config->lane_lat_optim_mask =
bxt_ddi_phy_get_lane_lat_optim_mask(encoder);
intel_ddi_compute_min_voltage_level(dev_priv, pipe_config);
}
static enum intel_output_type
intel_ddi_compute_output_type(struct intel_encoder *encoder,
struct intel_crtc_state *crtc_state,
struct drm_connector_state *conn_state)
{
switch (conn_state->connector->connector_type) {
case DRM_MODE_CONNECTOR_HDMIA:
return INTEL_OUTPUT_HDMI;
case DRM_MODE_CONNECTOR_eDP:
return INTEL_OUTPUT_EDP;
case DRM_MODE_CONNECTOR_DisplayPort:
return INTEL_OUTPUT_DP;
default:
MISSING_CASE(conn_state->connector->connector_type);
return INTEL_OUTPUT_UNUSED;
}
}
static int intel_ddi_compute_config(struct intel_encoder *encoder,
struct intel_crtc_state *pipe_config,
struct drm_connector_state *conn_state)
{
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
enum port port = encoder->port;
int ret;
if (port == PORT_A)
pipe_config->cpu_transcoder = TRANSCODER_EDP;
if (intel_crtc_has_type(pipe_config, INTEL_OUTPUT_HDMI))
ret = intel_hdmi_compute_config(encoder, pipe_config, conn_state);
else
ret = intel_dp_compute_config(encoder, pipe_config, conn_state);
if (IS_GEN9_LP(dev_priv) && ret)
pipe_config->lane_lat_optim_mask =
bxt_ddi_phy_calc_lane_lat_optim_mask(pipe_config->lane_count);
intel_ddi_compute_min_voltage_level(dev_priv, pipe_config);
return ret;
}
static void intel_ddi_encoder_suspend(struct intel_encoder *encoder)
{
struct intel_digital_port *dig_port = enc_to_dig_port(&encoder->base);
struct drm_i915_private *i915 = to_i915(encoder->base.dev);
intel_dp_encoder_suspend(encoder);
/*
* TODO: disconnect also from USB DP alternate mode once we have a
* way to handle the modeset restore in that mode during resume
* even if the sink has disappeared while being suspended.
*/
if (dig_port->tc_legacy_port)
icl_tc_phy_disconnect(i915, dig_port);
}
static void intel_ddi_encoder_reset(struct drm_encoder *drm_encoder)
{
struct intel_digital_port *dig_port = enc_to_dig_port(drm_encoder);
struct drm_i915_private *i915 = to_i915(drm_encoder->dev);
if (intel_port_is_tc(i915, dig_port->base.port))
intel_digital_port_connected(&dig_port->base);
intel_dp_encoder_reset(drm_encoder);
}
static void intel_ddi_encoder_destroy(struct drm_encoder *encoder)
{
struct intel_digital_port *dig_port = enc_to_dig_port(encoder);
struct drm_i915_private *i915 = to_i915(encoder->dev);
intel_dp_encoder_flush_work(encoder);
if (intel_port_is_tc(i915, dig_port->base.port))
icl_tc_phy_disconnect(i915, dig_port);
drm_encoder_cleanup(encoder);
kfree(dig_port);
}
static const struct drm_encoder_funcs intel_ddi_funcs = {
.reset = intel_ddi_encoder_reset,
.destroy = intel_ddi_encoder_destroy,
};
static struct intel_connector *
intel_ddi_init_dp_connector(struct intel_digital_port *intel_dig_port)
{
struct intel_connector *connector;
enum port port = intel_dig_port->base.port;
connector = intel_connector_alloc();
if (!connector)
return NULL;
intel_dig_port->dp.output_reg = DDI_BUF_CTL(port);
if (!intel_dp_init_connector(intel_dig_port, connector)) {
kfree(connector);
return NULL;
}
return connector;
}
static int modeset_pipe(struct drm_crtc *crtc,
struct drm_modeset_acquire_ctx *ctx)
{
struct drm_atomic_state *state;
struct drm_crtc_state *crtc_state;
int ret;
state = drm_atomic_state_alloc(crtc->dev);
if (!state)
return -ENOMEM;
state->acquire_ctx = ctx;
crtc_state = drm_atomic_get_crtc_state(state, crtc);
if (IS_ERR(crtc_state)) {
ret = PTR_ERR(crtc_state);
goto out;
}
crtc_state->mode_changed = true;
ret = drm_atomic_add_affected_connectors(state, crtc);
if (ret)
goto out;
ret = drm_atomic_add_affected_planes(state, crtc);
if (ret)
goto out;
ret = drm_atomic_commit(state);
out:
drm_atomic_state_put(state);
return ret;
}
static int intel_hdmi_reset_link(struct intel_encoder *encoder,
struct drm_modeset_acquire_ctx *ctx)
{
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
struct intel_hdmi *hdmi = enc_to_intel_hdmi(&encoder->base);
struct intel_connector *connector = hdmi->attached_connector;
struct i2c_adapter *adapter =
intel_gmbus_get_adapter(dev_priv, hdmi->ddc_bus);
struct drm_connector_state *conn_state;
struct intel_crtc_state *crtc_state;
struct intel_crtc *crtc;
u8 config;
int ret;
if (!connector || connector->base.status != connector_status_connected)
return 0;
ret = drm_modeset_lock(&dev_priv->drm.mode_config.connection_mutex,
ctx);
if (ret)
return ret;
conn_state = connector->base.state;
crtc = to_intel_crtc(conn_state->crtc);
if (!crtc)
return 0;
ret = drm_modeset_lock(&crtc->base.mutex, ctx);
if (ret)
return ret;
crtc_state = to_intel_crtc_state(crtc->base.state);
WARN_ON(!intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI));
if (!crtc_state->base.active)
return 0;
if (!crtc_state->hdmi_high_tmds_clock_ratio &&
!crtc_state->hdmi_scrambling)
return 0;
if (conn_state->commit &&
!try_wait_for_completion(&conn_state->commit->hw_done))
return 0;
ret = drm_scdc_readb(adapter, SCDC_TMDS_CONFIG, &config);
if (ret < 0) {
DRM_ERROR("Failed to read TMDS config: %d\n", ret);
return 0;
}
if (!!(config & SCDC_TMDS_BIT_CLOCK_RATIO_BY_40) ==
crtc_state->hdmi_high_tmds_clock_ratio &&
!!(config & SCDC_SCRAMBLING_ENABLE) ==
crtc_state->hdmi_scrambling)
return 0;
/*
* HDMI 2.0 says that one should not send scrambled data
* prior to configuring the sink scrambling, and that
* TMDS clock/data transmission should be suspended when
* changing the TMDS clock rate in the sink. So let's
* just do a full modeset here, even though some sinks
* would be perfectly happy if were to just reconfigure
* the SCDC settings on the fly.
*/
return modeset_pipe(&crtc->base, ctx);
}
static bool intel_ddi_hotplug(struct intel_encoder *encoder,
struct intel_connector *connector)
{
struct drm_modeset_acquire_ctx ctx;
bool changed;
int ret;
changed = intel_encoder_hotplug(encoder, connector);
drm_modeset_acquire_init(&ctx, 0);
for (;;) {
if (connector->base.connector_type == DRM_MODE_CONNECTOR_HDMIA)
ret = intel_hdmi_reset_link(encoder, &ctx);
else
ret = intel_dp_retrain_link(encoder, &ctx);
if (ret == -EDEADLK) {
drm_modeset_backoff(&ctx);
continue;
}
break;
}
drm_modeset_drop_locks(&ctx);
drm_modeset_acquire_fini(&ctx);
WARN(ret, "Acquiring modeset locks failed with %i\n", ret);
return changed;
}
static struct intel_connector *
intel_ddi_init_hdmi_connector(struct intel_digital_port *intel_dig_port)
{
struct intel_connector *connector;
enum port port = intel_dig_port->base.port;
connector = intel_connector_alloc();
if (!connector)
return NULL;
intel_dig_port->hdmi.hdmi_reg = DDI_BUF_CTL(port);
intel_hdmi_init_connector(intel_dig_port, connector);
return connector;
}
static bool intel_ddi_a_force_4_lanes(struct intel_digital_port *dport)
{
struct drm_i915_private *dev_priv = to_i915(dport->base.base.dev);
if (dport->base.port != PORT_A)
return false;
if (dport->saved_port_bits & DDI_A_4_LANES)
return false;
/* Broxton/Geminilake: Bspec says that DDI_A_4_LANES is the only
* supported configuration
*/
if (IS_GEN9_LP(dev_priv))
return true;
/* Cannonlake: Most of SKUs don't support DDI_E, and the only
* one who does also have a full A/E split called
* DDI_F what makes DDI_E useless. However for this
* case let's trust VBT info.
*/
if (IS_CANNONLAKE(dev_priv) &&
!intel_bios_is_port_present(dev_priv, PORT_E))
return true;
return false;
}
static int
intel_ddi_max_lanes(struct intel_digital_port *intel_dport)
{
struct drm_i915_private *dev_priv = to_i915(intel_dport->base.base.dev);
enum port port = intel_dport->base.port;
int max_lanes = 4;
if (INTEL_GEN(dev_priv) >= 11)
return max_lanes;
if (port == PORT_A || port == PORT_E) {
if (I915_READ(DDI_BUF_CTL(PORT_A)) & DDI_A_4_LANES)
max_lanes = port == PORT_A ? 4 : 0;
else
/* Both A and E share 2 lanes */
max_lanes = 2;
}
/*
* Some BIOS might fail to set this bit on port A if eDP
* wasn't lit up at boot. Force this bit set when needed
* so we use the proper lane count for our calculations.
*/
if (intel_ddi_a_force_4_lanes(intel_dport)) {
DRM_DEBUG_KMS("Forcing DDI_A_4_LANES for port A\n");
intel_dport->saved_port_bits |= DDI_A_4_LANES;
max_lanes = 4;
}
return max_lanes;
}
void intel_ddi_init(struct drm_i915_private *dev_priv, enum port port)
{
struct ddi_vbt_port_info *port_info =
&dev_priv->vbt.ddi_port_info[port];
struct intel_digital_port *intel_dig_port;
struct intel_encoder *intel_encoder;
struct drm_encoder *encoder;
bool init_hdmi, init_dp, init_lspcon = false;
enum pipe pipe;
init_hdmi = port_info->supports_dvi || port_info->supports_hdmi;
init_dp = port_info->supports_dp;
if (intel_bios_is_lspcon_present(dev_priv, port)) {
/*
* Lspcon device needs to be driven with DP connector
* with special detection sequence. So make sure DP
* is initialized before lspcon.
*/
init_dp = true;
init_lspcon = true;
init_hdmi = false;
DRM_DEBUG_KMS("VBT says port %c has lspcon\n", port_name(port));
}
if (!init_dp && !init_hdmi) {
DRM_DEBUG_KMS("VBT says port %c is not DVI/HDMI/DP compatible, respect it\n",
port_name(port));
return;
}
intel_dig_port = kzalloc(sizeof(*intel_dig_port), GFP_KERNEL);
if (!intel_dig_port)
return;
intel_encoder = &intel_dig_port->base;
encoder = &intel_encoder->base;
drm_encoder_init(&dev_priv->drm, encoder, &intel_ddi_funcs,
DRM_MODE_ENCODER_TMDS, "DDI %c", port_name(port));
intel_encoder->hotplug = intel_ddi_hotplug;
intel_encoder->compute_output_type = intel_ddi_compute_output_type;
intel_encoder->compute_config = intel_ddi_compute_config;
intel_encoder->enable = intel_enable_ddi;
intel_encoder->pre_pll_enable = intel_ddi_pre_pll_enable;
intel_encoder->post_pll_disable = intel_ddi_post_pll_disable;
intel_encoder->pre_enable = intel_ddi_pre_enable;
intel_encoder->disable = intel_disable_ddi;
intel_encoder->post_disable = intel_ddi_post_disable;
intel_encoder->update_pipe = intel_ddi_update_pipe;
intel_encoder->get_hw_state = intel_ddi_get_hw_state;
intel_encoder->get_config = intel_ddi_get_config;
intel_encoder->suspend = intel_ddi_encoder_suspend;
intel_encoder->get_power_domains = intel_ddi_get_power_domains;
intel_encoder->type = INTEL_OUTPUT_DDI;
intel_encoder->power_domain = intel_port_to_power_domain(port);
intel_encoder->port = port;
intel_encoder->cloneable = 0;
for_each_pipe(dev_priv, pipe)
intel_encoder->crtc_mask |= BIT(pipe);
if (INTEL_GEN(dev_priv) >= 11)
intel_dig_port->saved_port_bits = I915_READ(DDI_BUF_CTL(port)) &
DDI_BUF_PORT_REVERSAL;
else
intel_dig_port->saved_port_bits = I915_READ(DDI_BUF_CTL(port)) &
(DDI_BUF_PORT_REVERSAL | DDI_A_4_LANES);
intel_dig_port->dp.output_reg = INVALID_MMIO_REG;
intel_dig_port->max_lanes = intel_ddi_max_lanes(intel_dig_port);
intel_dig_port->aux_ch = intel_bios_port_aux_ch(dev_priv, port);
intel_dig_port->tc_legacy_port = intel_port_is_tc(dev_priv, port) &&
!port_info->supports_typec_usb &&
!port_info->supports_tbt;
switch (port) {
case PORT_A:
intel_dig_port->ddi_io_power_domain =
POWER_DOMAIN_PORT_DDI_A_IO;
break;
case PORT_B:
intel_dig_port->ddi_io_power_domain =
POWER_DOMAIN_PORT_DDI_B_IO;
break;
case PORT_C:
intel_dig_port->ddi_io_power_domain =
POWER_DOMAIN_PORT_DDI_C_IO;
break;
case PORT_D:
intel_dig_port->ddi_io_power_domain =
POWER_DOMAIN_PORT_DDI_D_IO;
break;
case PORT_E:
intel_dig_port->ddi_io_power_domain =
POWER_DOMAIN_PORT_DDI_E_IO;
break;
case PORT_F:
intel_dig_port->ddi_io_power_domain =
POWER_DOMAIN_PORT_DDI_F_IO;
break;
default:
MISSING_CASE(port);
}
if (init_dp) {
if (!intel_ddi_init_dp_connector(intel_dig_port))
goto err;
intel_dig_port->hpd_pulse = intel_dp_hpd_pulse;
}
/* In theory we don't need the encoder->type check, but leave it just in
* case we have some really bad VBTs... */
if (intel_encoder->type != INTEL_OUTPUT_EDP && init_hdmi) {
if (!intel_ddi_init_hdmi_connector(intel_dig_port))
goto err;
}
if (init_lspcon) {
if (lspcon_init(intel_dig_port))
/* TODO: handle hdmi info frame part */
DRM_DEBUG_KMS("LSPCON init success on port %c\n",
port_name(port));
else
/*
* LSPCON init faied, but DP init was success, so
* lets try to drive as DP++ port.
*/
DRM_ERROR("LSPCON init failed on port %c\n",
port_name(port));
}
intel_infoframe_init(intel_dig_port);
if (intel_port_is_tc(dev_priv, port))
intel_digital_port_connected(intel_encoder);
return;
err:
drm_encoder_cleanup(encoder);
kfree(intel_dig_port);
}
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