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linux/drivers/gpu/drm/i915/intel_tv.c

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/*
* Copyright © 2006-2008 Intel Corporation
* Jesse Barnes <jesse.barnes@intel.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* Authors:
* Eric Anholt <eric@anholt.net>
*
*/
/** @file
* Integrated TV-out support for the 915GM and 945GM.
*/
#include <drm/drm_atomic_helper.h>
#include <drm/drm_crtc.h>
#include <drm/drm_edid.h>
#include "intel_drv.h"
#include <drm/i915_drm.h>
#include "i915_drv.h"
enum tv_margin {
TV_MARGIN_LEFT, TV_MARGIN_TOP,
TV_MARGIN_RIGHT, TV_MARGIN_BOTTOM
};
struct intel_tv {
struct intel_encoder base;
int type;
};
struct video_levels {
u16 blank, black;
u8 burst;
};
struct color_conversion {
u16 ry, gy, by, ay;
u16 ru, gu, bu, au;
u16 rv, gv, bv, av;
};
static const u32 filter_table[] = {
0xB1403000, 0x2E203500, 0x35002E20, 0x3000B140,
0x35A0B160, 0x2DC02E80, 0xB1403480, 0xB1603000,
0x2EA03640, 0x34002D80, 0x3000B120, 0x36E0B160,
0x2D202EF0, 0xB1203380, 0xB1603000, 0x2F303780,
0x33002CC0, 0x3000B100, 0x3820B160, 0x2C802F50,
0xB10032A0, 0xB1603000, 0x2F9038C0, 0x32202C20,
0x3000B0E0, 0x3980B160, 0x2BC02FC0, 0xB0E031C0,
0xB1603000, 0x2FF03A20, 0x31602B60, 0xB020B0C0,
0x3AE0B160, 0x2B001810, 0xB0C03120, 0xB140B020,
0x18283BA0, 0x30C02A80, 0xB020B0A0, 0x3C60B140,
0x2A201838, 0xB0A03080, 0xB120B020, 0x18383D20,
0x304029C0, 0xB040B080, 0x3DE0B100, 0x29601848,
0xB0803000, 0xB100B040, 0x18483EC0, 0xB0402900,
0xB040B060, 0x3F80B0C0, 0x28801858, 0xB060B080,
0xB0A0B060, 0x18602820, 0xB0A02820, 0x0000B060,
0xB1403000, 0x2E203500, 0x35002E20, 0x3000B140,
0x35A0B160, 0x2DC02E80, 0xB1403480, 0xB1603000,
0x2EA03640, 0x34002D80, 0x3000B120, 0x36E0B160,
0x2D202EF0, 0xB1203380, 0xB1603000, 0x2F303780,
0x33002CC0, 0x3000B100, 0x3820B160, 0x2C802F50,
0xB10032A0, 0xB1603000, 0x2F9038C0, 0x32202C20,
0x3000B0E0, 0x3980B160, 0x2BC02FC0, 0xB0E031C0,
0xB1603000, 0x2FF03A20, 0x31602B60, 0xB020B0C0,
0x3AE0B160, 0x2B001810, 0xB0C03120, 0xB140B020,
0x18283BA0, 0x30C02A80, 0xB020B0A0, 0x3C60B140,
0x2A201838, 0xB0A03080, 0xB120B020, 0x18383D20,
0x304029C0, 0xB040B080, 0x3DE0B100, 0x29601848,
0xB0803000, 0xB100B040, 0x18483EC0, 0xB0402900,
0xB040B060, 0x3F80B0C0, 0x28801858, 0xB060B080,
0xB0A0B060, 0x18602820, 0xB0A02820, 0x0000B060,
0x36403000, 0x2D002CC0, 0x30003640, 0x2D0036C0,
0x35C02CC0, 0x37403000, 0x2C802D40, 0x30003540,
0x2D8037C0, 0x34C02C40, 0x38403000, 0x2BC02E00,
0x30003440, 0x2E2038C0, 0x34002B80, 0x39803000,
0x2B402E40, 0x30003380, 0x2E603A00, 0x33402B00,
0x3A803040, 0x2A802EA0, 0x30403300, 0x2EC03B40,
0x32802A40, 0x3C003040, 0x2A002EC0, 0x30803240,
0x2EC03C80, 0x320029C0, 0x3D403080, 0x29402F00,
0x308031C0, 0x2F203DC0, 0x31802900, 0x3E8030C0,
0x28802F40, 0x30C03140, 0x2F203F40, 0x31402840,
0x28003100, 0x28002F00, 0x00003100, 0x36403000,
0x2D002CC0, 0x30003640, 0x2D0036C0,
0x35C02CC0, 0x37403000, 0x2C802D40, 0x30003540,
0x2D8037C0, 0x34C02C40, 0x38403000, 0x2BC02E00,
0x30003440, 0x2E2038C0, 0x34002B80, 0x39803000,
0x2B402E40, 0x30003380, 0x2E603A00, 0x33402B00,
0x3A803040, 0x2A802EA0, 0x30403300, 0x2EC03B40,
0x32802A40, 0x3C003040, 0x2A002EC0, 0x30803240,
0x2EC03C80, 0x320029C0, 0x3D403080, 0x29402F00,
0x308031C0, 0x2F203DC0, 0x31802900, 0x3E8030C0,
0x28802F40, 0x30C03140, 0x2F203F40, 0x31402840,
0x28003100, 0x28002F00, 0x00003100,
};
/*
* Color conversion values have 3 separate fixed point formats:
*
* 10 bit fields (ay, au)
* 1.9 fixed point (b.bbbbbbbbb)
* 11 bit fields (ry, by, ru, gu, gv)
* exp.mantissa (ee.mmmmmmmmm)
* ee = 00 = 10^-1 (0.mmmmmmmmm)
* ee = 01 = 10^-2 (0.0mmmmmmmmm)
* ee = 10 = 10^-3 (0.00mmmmmmmmm)
* ee = 11 = 10^-4 (0.000mmmmmmmmm)
* 12 bit fields (gy, rv, bu)
* exp.mantissa (eee.mmmmmmmmm)
* eee = 000 = 10^-1 (0.mmmmmmmmm)
* eee = 001 = 10^-2 (0.0mmmmmmmmm)
* eee = 010 = 10^-3 (0.00mmmmmmmmm)
* eee = 011 = 10^-4 (0.000mmmmmmmmm)
* eee = 100 = reserved
* eee = 101 = reserved
* eee = 110 = reserved
* eee = 111 = 10^0 (m.mmmmmmmm) (only usable for 1.0 representation)
*
* Saturation and contrast are 8 bits, with their own representation:
* 8 bit field (saturation, contrast)
* exp.mantissa (ee.mmmmmm)
* ee = 00 = 10^-1 (0.mmmmmm)
* ee = 01 = 10^0 (m.mmmmm)
* ee = 10 = 10^1 (mm.mmmm)
* ee = 11 = 10^2 (mmm.mmm)
*
* Simple conversion function:
*
* static u32
* float_to_csc_11(float f)
* {
* u32 exp;
* u32 mant;
* u32 ret;
*
* if (f < 0)
* f = -f;
*
* if (f >= 1) {
* exp = 0x7;
* mant = 1 << 8;
* } else {
* for (exp = 0; exp < 3 && f < 0.5; exp++)
* f *= 2.0;
* mant = (f * (1 << 9) + 0.5);
* if (mant >= (1 << 9))
* mant = (1 << 9) - 1;
* }
* ret = (exp << 9) | mant;
* return ret;
* }
*/
/*
* Behold, magic numbers! If we plant them they might grow a big
* s-video cable to the sky... or something.
*
* Pre-converted to appropriate hex value.
*/
/*
* PAL & NTSC values for composite & s-video connections
*/
static const struct color_conversion ntsc_m_csc_composite = {
.ry = 0x0332, .gy = 0x012d, .by = 0x07d3, .ay = 0x0104,
.ru = 0x0733, .gu = 0x052d, .bu = 0x05c7, .au = 0x0200,
.rv = 0x0340, .gv = 0x030c, .bv = 0x06d0, .av = 0x0200,
};
static const struct video_levels ntsc_m_levels_composite = {
.blank = 225, .black = 267, .burst = 113,
};
static const struct color_conversion ntsc_m_csc_svideo = {
.ry = 0x0332, .gy = 0x012d, .by = 0x07d3, .ay = 0x0133,
.ru = 0x076a, .gu = 0x0564, .bu = 0x030d, .au = 0x0200,
.rv = 0x037a, .gv = 0x033d, .bv = 0x06f6, .av = 0x0200,
};
static const struct video_levels ntsc_m_levels_svideo = {
.blank = 266, .black = 316, .burst = 133,
};
static const struct color_conversion ntsc_j_csc_composite = {
.ry = 0x0332, .gy = 0x012d, .by = 0x07d3, .ay = 0x0119,
.ru = 0x074c, .gu = 0x0546, .bu = 0x05ec, .au = 0x0200,
.rv = 0x035a, .gv = 0x0322, .bv = 0x06e1, .av = 0x0200,
};
static const struct video_levels ntsc_j_levels_composite = {
.blank = 225, .black = 225, .burst = 113,
};
static const struct color_conversion ntsc_j_csc_svideo = {
.ry = 0x0332, .gy = 0x012d, .by = 0x07d3, .ay = 0x014c,
.ru = 0x0788, .gu = 0x0581, .bu = 0x0322, .au = 0x0200,
.rv = 0x0399, .gv = 0x0356, .bv = 0x070a, .av = 0x0200,
};
static const struct video_levels ntsc_j_levels_svideo = {
.blank = 266, .black = 266, .burst = 133,
};
static const struct color_conversion pal_csc_composite = {
.ry = 0x0332, .gy = 0x012d, .by = 0x07d3, .ay = 0x0113,
.ru = 0x0745, .gu = 0x053f, .bu = 0x05e1, .au = 0x0200,
.rv = 0x0353, .gv = 0x031c, .bv = 0x06dc, .av = 0x0200,
};
static const struct video_levels pal_levels_composite = {
.blank = 237, .black = 237, .burst = 118,
};
static const struct color_conversion pal_csc_svideo = {
.ry = 0x0332, .gy = 0x012d, .by = 0x07d3, .ay = 0x0145,
.ru = 0x0780, .gu = 0x0579, .bu = 0x031c, .au = 0x0200,
.rv = 0x0390, .gv = 0x034f, .bv = 0x0705, .av = 0x0200,
};
static const struct video_levels pal_levels_svideo = {
.blank = 280, .black = 280, .burst = 139,
};
static const struct color_conversion pal_m_csc_composite = {
.ry = 0x0332, .gy = 0x012d, .by = 0x07d3, .ay = 0x0104,
.ru = 0x0733, .gu = 0x052d, .bu = 0x05c7, .au = 0x0200,
.rv = 0x0340, .gv = 0x030c, .bv = 0x06d0, .av = 0x0200,
};
static const struct video_levels pal_m_levels_composite = {
.blank = 225, .black = 267, .burst = 113,
};
static const struct color_conversion pal_m_csc_svideo = {
.ry = 0x0332, .gy = 0x012d, .by = 0x07d3, .ay = 0x0133,
.ru = 0x076a, .gu = 0x0564, .bu = 0x030d, .au = 0x0200,
.rv = 0x037a, .gv = 0x033d, .bv = 0x06f6, .av = 0x0200,
};
static const struct video_levels pal_m_levels_svideo = {
.blank = 266, .black = 316, .burst = 133,
};
static const struct color_conversion pal_n_csc_composite = {
.ry = 0x0332, .gy = 0x012d, .by = 0x07d3, .ay = 0x0104,
.ru = 0x0733, .gu = 0x052d, .bu = 0x05c7, .au = 0x0200,
.rv = 0x0340, .gv = 0x030c, .bv = 0x06d0, .av = 0x0200,
};
static const struct video_levels pal_n_levels_composite = {
.blank = 225, .black = 267, .burst = 118,
};
static const struct color_conversion pal_n_csc_svideo = {
.ry = 0x0332, .gy = 0x012d, .by = 0x07d3, .ay = 0x0133,
.ru = 0x076a, .gu = 0x0564, .bu = 0x030d, .au = 0x0200,
.rv = 0x037a, .gv = 0x033d, .bv = 0x06f6, .av = 0x0200,
};
static const struct video_levels pal_n_levels_svideo = {
.blank = 266, .black = 316, .burst = 139,
};
/*
* Component connections
*/
static const struct color_conversion sdtv_csc_yprpb = {
.ry = 0x0332, .gy = 0x012d, .by = 0x07d3, .ay = 0x0145,
.ru = 0x0559, .gu = 0x0353, .bu = 0x0100, .au = 0x0200,
.rv = 0x0100, .gv = 0x03ad, .bv = 0x074d, .av = 0x0200,
};
static const struct color_conversion hdtv_csc_yprpb = {
.ry = 0x05b3, .gy = 0x016e, .by = 0x0728, .ay = 0x0145,
.ru = 0x07d5, .gu = 0x038b, .bu = 0x0100, .au = 0x0200,
.rv = 0x0100, .gv = 0x03d1, .bv = 0x06bc, .av = 0x0200,
};
static const struct video_levels component_levels = {
.blank = 279, .black = 279, .burst = 0,
};
struct tv_mode {
const char *name;
u32 clock;
u16 refresh; /* in millihertz (for precision) */
u8 oversample;
u8 hsync_end;
u16 hblank_start, hblank_end, htotal;
bool progressive : 1, trilevel_sync : 1, component_only : 1;
u8 vsync_start_f1, vsync_start_f2, vsync_len;
bool veq_ena : 1;
u8 veq_start_f1, veq_start_f2, veq_len;
u8 vi_end_f1, vi_end_f2;
u16 nbr_end;
bool burst_ena : 1;
u8 hburst_start, hburst_len;
u8 vburst_start_f1;
u16 vburst_end_f1;
u8 vburst_start_f2;
u16 vburst_end_f2;
u8 vburst_start_f3;
u16 vburst_end_f3;
u8 vburst_start_f4;
u16 vburst_end_f4;
/*
* subcarrier programming
*/
u16 dda2_size, dda3_size;
u8 dda1_inc;
u16 dda2_inc, dda3_inc;
u32 sc_reset;
bool pal_burst : 1;
/*
* blank/black levels
*/
const struct video_levels *composite_levels, *svideo_levels;
const struct color_conversion *composite_color, *svideo_color;
const u32 *filter_table;
};
/*
* Sub carrier DDA
*
* I think this works as follows:
*
* subcarrier freq = pixel_clock * (dda1_inc + dda2_inc / dda2_size) / 4096
*
* Presumably, when dda3 is added in, it gets to adjust the dda2_inc value
*
* So,
* dda1_ideal = subcarrier/pixel * 4096
* dda1_inc = floor (dda1_ideal)
* dda2 = dda1_ideal - dda1_inc
*
* then pick a ratio for dda2 that gives the closest approximation. If
* you can't get close enough, you can play with dda3 as well. This
* seems likely to happen when dda2 is small as the jumps would be larger
*
* To invert this,
*
* pixel_clock = subcarrier * 4096 / (dda1_inc + dda2_inc / dda2_size)
*
* The constants below were all computed using a 107.520MHz clock
*/
/*
* Register programming values for TV modes.
*
* These values account for -1s required.
*/
static const struct tv_mode tv_modes[] = {
{
.name = "NTSC-M",
.clock = 108000,
.refresh = 59940,
.oversample = 8,
.component_only = false,
/* 525 Lines, 60 Fields, 15.734KHz line, Sub-Carrier 3.580MHz */
.hsync_end = 64, .hblank_end = 124,
.hblank_start = 836, .htotal = 857,
.progressive = false, .trilevel_sync = false,
.vsync_start_f1 = 6, .vsync_start_f2 = 7,
.vsync_len = 6,
.veq_ena = true, .veq_start_f1 = 0,
.veq_start_f2 = 1, .veq_len = 18,
.vi_end_f1 = 20, .vi_end_f2 = 21,
.nbr_end = 240,
.burst_ena = true,
.hburst_start = 72, .hburst_len = 34,
.vburst_start_f1 = 9, .vburst_end_f1 = 240,
.vburst_start_f2 = 10, .vburst_end_f2 = 240,
.vburst_start_f3 = 9, .vburst_end_f3 = 240,
.vburst_start_f4 = 10, .vburst_end_f4 = 240,
/* desired 3.5800000 actual 3.5800000 clock 107.52 */
.dda1_inc = 135,
.dda2_inc = 20800, .dda2_size = 27456,
.dda3_inc = 0, .dda3_size = 0,
.sc_reset = TV_SC_RESET_EVERY_4,
.pal_burst = false,
.composite_levels = &ntsc_m_levels_composite,
.composite_color = &ntsc_m_csc_composite,
.svideo_levels = &ntsc_m_levels_svideo,
.svideo_color = &ntsc_m_csc_svideo,
.filter_table = filter_table,
},
{
.name = "NTSC-443",
.clock = 108000,
.refresh = 59940,
.oversample = 8,
.component_only = false,
/* 525 Lines, 60 Fields, 15.734KHz line, Sub-Carrier 4.43MHz */
.hsync_end = 64, .hblank_end = 124,
.hblank_start = 836, .htotal = 857,
.progressive = false, .trilevel_sync = false,
.vsync_start_f1 = 6, .vsync_start_f2 = 7,
.vsync_len = 6,
.veq_ena = true, .veq_start_f1 = 0,
.veq_start_f2 = 1, .veq_len = 18,
.vi_end_f1 = 20, .vi_end_f2 = 21,
.nbr_end = 240,
.burst_ena = true,
.hburst_start = 72, .hburst_len = 34,
.vburst_start_f1 = 9, .vburst_end_f1 = 240,
.vburst_start_f2 = 10, .vburst_end_f2 = 240,
.vburst_start_f3 = 9, .vburst_end_f3 = 240,
.vburst_start_f4 = 10, .vburst_end_f4 = 240,
/* desired 4.4336180 actual 4.4336180 clock 107.52 */
.dda1_inc = 168,
.dda2_inc = 4093, .dda2_size = 27456,
.dda3_inc = 310, .dda3_size = 525,
.sc_reset = TV_SC_RESET_NEVER,
.pal_burst = false,
.composite_levels = &ntsc_m_levels_composite,
.composite_color = &ntsc_m_csc_composite,
.svideo_levels = &ntsc_m_levels_svideo,
.svideo_color = &ntsc_m_csc_svideo,
.filter_table = filter_table,
},
{
.name = "NTSC-J",
.clock = 108000,
.refresh = 59940,
.oversample = 8,
.component_only = false,
/* 525 Lines, 60 Fields, 15.734KHz line, Sub-Carrier 3.580MHz */
.hsync_end = 64, .hblank_end = 124,
.hblank_start = 836, .htotal = 857,
.progressive = false, .trilevel_sync = false,
.vsync_start_f1 = 6, .vsync_start_f2 = 7,
.vsync_len = 6,
.veq_ena = true, .veq_start_f1 = 0,
.veq_start_f2 = 1, .veq_len = 18,
.vi_end_f1 = 20, .vi_end_f2 = 21,
.nbr_end = 240,
.burst_ena = true,
.hburst_start = 72, .hburst_len = 34,
.vburst_start_f1 = 9, .vburst_end_f1 = 240,
.vburst_start_f2 = 10, .vburst_end_f2 = 240,
.vburst_start_f3 = 9, .vburst_end_f3 = 240,
.vburst_start_f4 = 10, .vburst_end_f4 = 240,
/* desired 3.5800000 actual 3.5800000 clock 107.52 */
.dda1_inc = 135,
.dda2_inc = 20800, .dda2_size = 27456,
.dda3_inc = 0, .dda3_size = 0,
.sc_reset = TV_SC_RESET_EVERY_4,
.pal_burst = false,
.composite_levels = &ntsc_j_levels_composite,
.composite_color = &ntsc_j_csc_composite,
.svideo_levels = &ntsc_j_levels_svideo,
.svideo_color = &ntsc_j_csc_svideo,
.filter_table = filter_table,
},
{
.name = "PAL-M",
.clock = 108000,
.refresh = 59940,
.oversample = 8,
.component_only = false,
/* 525 Lines, 60 Fields, 15.734KHz line, Sub-Carrier 3.580MHz */
.hsync_end = 64, .hblank_end = 124,
.hblank_start = 836, .htotal = 857,
.progressive = false, .trilevel_sync = false,
.vsync_start_f1 = 6, .vsync_start_f2 = 7,
.vsync_len = 6,
.veq_ena = true, .veq_start_f1 = 0,
.veq_start_f2 = 1, .veq_len = 18,
.vi_end_f1 = 20, .vi_end_f2 = 21,
.nbr_end = 240,
.burst_ena = true,
.hburst_start = 72, .hburst_len = 34,
.vburst_start_f1 = 9, .vburst_end_f1 = 240,
.vburst_start_f2 = 10, .vburst_end_f2 = 240,
.vburst_start_f3 = 9, .vburst_end_f3 = 240,
.vburst_start_f4 = 10, .vburst_end_f4 = 240,
/* desired 3.5800000 actual 3.5800000 clock 107.52 */
.dda1_inc = 135,
.dda2_inc = 16704, .dda2_size = 27456,
.dda3_inc = 0, .dda3_size = 0,
.sc_reset = TV_SC_RESET_EVERY_8,
.pal_burst = true,
.composite_levels = &pal_m_levels_composite,
.composite_color = &pal_m_csc_composite,
.svideo_levels = &pal_m_levels_svideo,
.svideo_color = &pal_m_csc_svideo,
.filter_table = filter_table,
},
{
/* 625 Lines, 50 Fields, 15.625KHz line, Sub-Carrier 4.434MHz */
.name = "PAL-N",
.clock = 108000,
.refresh = 50000,
.oversample = 8,
.component_only = false,
.hsync_end = 64, .hblank_end = 128,
.hblank_start = 844, .htotal = 863,
.progressive = false, .trilevel_sync = false,
.vsync_start_f1 = 6, .vsync_start_f2 = 7,
.vsync_len = 6,
.veq_ena = true, .veq_start_f1 = 0,
.veq_start_f2 = 1, .veq_len = 18,
.vi_end_f1 = 24, .vi_end_f2 = 25,
.nbr_end = 286,
.burst_ena = true,
.hburst_start = 73, .hburst_len = 34,
.vburst_start_f1 = 8, .vburst_end_f1 = 285,
.vburst_start_f2 = 8, .vburst_end_f2 = 286,
.vburst_start_f3 = 9, .vburst_end_f3 = 286,
.vburst_start_f4 = 9, .vburst_end_f4 = 285,
/* desired 4.4336180 actual 4.4336180 clock 107.52 */
.dda1_inc = 135,
.dda2_inc = 23578, .dda2_size = 27648,
.dda3_inc = 134, .dda3_size = 625,
.sc_reset = TV_SC_RESET_EVERY_8,
.pal_burst = true,
.composite_levels = &pal_n_levels_composite,
.composite_color = &pal_n_csc_composite,
.svideo_levels = &pal_n_levels_svideo,
.svideo_color = &pal_n_csc_svideo,
.filter_table = filter_table,
},
{
/* 625 Lines, 50 Fields, 15.625KHz line, Sub-Carrier 4.434MHz */
.name = "PAL",
.clock = 108000,
.refresh = 50000,
.oversample = 8,
.component_only = false,
.hsync_end = 64, .hblank_end = 142,
.hblank_start = 844, .htotal = 863,
.progressive = false, .trilevel_sync = false,
.vsync_start_f1 = 5, .vsync_start_f2 = 6,
.vsync_len = 5,
.veq_ena = true, .veq_start_f1 = 0,
.veq_start_f2 = 1, .veq_len = 15,
.vi_end_f1 = 24, .vi_end_f2 = 25,
.nbr_end = 286,
.burst_ena = true,
.hburst_start = 73, .hburst_len = 32,
.vburst_start_f1 = 8, .vburst_end_f1 = 285,
.vburst_start_f2 = 8, .vburst_end_f2 = 286,
.vburst_start_f3 = 9, .vburst_end_f3 = 286,
.vburst_start_f4 = 9, .vburst_end_f4 = 285,
/* desired 4.4336180 actual 4.4336180 clock 107.52 */
.dda1_inc = 168,
.dda2_inc = 4122, .dda2_size = 27648,
.dda3_inc = 67, .dda3_size = 625,
.sc_reset = TV_SC_RESET_EVERY_8,
.pal_burst = true,
.composite_levels = &pal_levels_composite,
.composite_color = &pal_csc_composite,
.svideo_levels = &pal_levels_svideo,
.svideo_color = &pal_csc_svideo,
.filter_table = filter_table,
},
{
.name = "480p",
.clock = 108000,
.refresh = 59940,
.oversample = 4,
.component_only = true,
.hsync_end = 64, .hblank_end = 122,
.hblank_start = 842, .htotal = 857,
.progressive = true, .trilevel_sync = false,
.vsync_start_f1 = 12, .vsync_start_f2 = 12,
.vsync_len = 12,
.veq_ena = false,
.vi_end_f1 = 44, .vi_end_f2 = 44,
.nbr_end = 479,
.burst_ena = false,
.filter_table = filter_table,
},
{
.name = "576p",
.clock = 108000,
.refresh = 50000,
.oversample = 4,
.component_only = true,
.hsync_end = 64, .hblank_end = 139,
.hblank_start = 859, .htotal = 863,
.progressive = true, .trilevel_sync = false,
.vsync_start_f1 = 10, .vsync_start_f2 = 10,
.vsync_len = 10,
.veq_ena = false,
.vi_end_f1 = 48, .vi_end_f2 = 48,
.nbr_end = 575,
.burst_ena = false,
.filter_table = filter_table,
},
{
.name = "720p@60Hz",
.clock = 148500,
.refresh = 60000,
.oversample = 2,
.component_only = true,
.hsync_end = 80, .hblank_end = 300,
.hblank_start = 1580, .htotal = 1649,
.progressive = true, .trilevel_sync = true,
.vsync_start_f1 = 10, .vsync_start_f2 = 10,
.vsync_len = 10,
.veq_ena = false,
.vi_end_f1 = 29, .vi_end_f2 = 29,
.nbr_end = 719,
.burst_ena = false,
.filter_table = filter_table,
},
{
.name = "720p@50Hz",
.clock = 148500,
.refresh = 50000,
.oversample = 2,
.component_only = true,
.hsync_end = 80, .hblank_end = 300,
.hblank_start = 1580, .htotal = 1979,
.progressive = true, .trilevel_sync = true,
.vsync_start_f1 = 10, .vsync_start_f2 = 10,
.vsync_len = 10,
.veq_ena = false,
.vi_end_f1 = 29, .vi_end_f2 = 29,
.nbr_end = 719,
.burst_ena = false,
.filter_table = filter_table,
},
{
.name = "1080i@50Hz",
.clock = 148500,
.refresh = 50000,
.oversample = 2,
.component_only = true,
.hsync_end = 88, .hblank_end = 235,
.hblank_start = 2155, .htotal = 2639,
.progressive = false, .trilevel_sync = true,
.vsync_start_f1 = 4, .vsync_start_f2 = 5,
.vsync_len = 10,
.veq_ena = true, .veq_start_f1 = 4,
.veq_start_f2 = 4, .veq_len = 10,
.vi_end_f1 = 21, .vi_end_f2 = 22,
.nbr_end = 539,
.burst_ena = false,
.filter_table = filter_table,
},
{
.name = "1080i@60Hz",
.clock = 148500,
.refresh = 60000,
.oversample = 2,
.component_only = true,
.hsync_end = 88, .hblank_end = 235,
.hblank_start = 2155, .htotal = 2199,
.progressive = false, .trilevel_sync = true,
.vsync_start_f1 = 4, .vsync_start_f2 = 5,
.vsync_len = 10,
.veq_ena = true, .veq_start_f1 = 4,
.veq_start_f2 = 4, .veq_len = 10,
.vi_end_f1 = 21, .vi_end_f2 = 22,
.nbr_end = 539,
.burst_ena = false,
.filter_table = filter_table,
},
{
.name = "1080p@30Hz",
.clock = 148500,
.refresh = 30000,
.oversample = 2,
.component_only = true,
.hsync_end = 88, .hblank_end = 235,
.hblank_start = 2155, .htotal = 2199,
.progressive = true, .trilevel_sync = true,
.vsync_start_f1 = 8, .vsync_start_f2 = 8,
.vsync_len = 10,
.veq_ena = false, .veq_start_f1 = 0,
.veq_start_f2 = 0, .veq_len = 0,
.vi_end_f1 = 44, .vi_end_f2 = 44,
.nbr_end = 1079,
.burst_ena = false,
.filter_table = filter_table,
},
{
.name = "1080p@50Hz",
.clock = 148500,
.refresh = 50000,
.oversample = 1,
.component_only = true,
.hsync_end = 88, .hblank_end = 235,
.hblank_start = 2155, .htotal = 2639,
.progressive = true, .trilevel_sync = true,
.vsync_start_f1 = 8, .vsync_start_f2 = 8,
.vsync_len = 10,
.veq_ena = false, .veq_start_f1 = 0,
.veq_start_f2 = 0, .veq_len = 0,
.vi_end_f1 = 44, .vi_end_f2 = 44,
.nbr_end = 1079,
.burst_ena = false,
.filter_table = filter_table,
},
{
.name = "1080p@60Hz",
.clock = 148500,
.refresh = 60000,
.oversample = 1,
.component_only = true,
.hsync_end = 88, .hblank_end = 235,
.hblank_start = 2155, .htotal = 2199,
.progressive = true, .trilevel_sync = true,
.vsync_start_f1 = 8, .vsync_start_f2 = 8,
.vsync_len = 10,
.veq_ena = false, .veq_start_f1 = 0,
.veq_start_f2 = 0, .veq_len = 0,
.vi_end_f1 = 44, .vi_end_f2 = 44,
.nbr_end = 1079,
.burst_ena = false,
.filter_table = filter_table,
},
};
struct intel_tv_connector_state {
struct drm_connector_state base;
/*
* May need to override the user margins for
* gen3 >1024 wide source vertical centering.
*/
struct {
u16 top, bottom;
} margins;
bool bypass_vfilter;
};
#define to_intel_tv_connector_state(x) container_of(x, struct intel_tv_connector_state, base)
static struct drm_connector_state *
intel_tv_connector_duplicate_state(struct drm_connector *connector)
{
struct intel_tv_connector_state *state;
state = kmemdup(connector->state, sizeof(*state), GFP_KERNEL);
if (!state)
return NULL;
__drm_atomic_helper_connector_duplicate_state(connector, &state->base);
return &state->base;
}
static struct intel_tv *enc_to_tv(struct intel_encoder *encoder)
{
return container_of(encoder, struct intel_tv, base);
}
static struct intel_tv *intel_attached_tv(struct drm_connector *connector)
{
return enc_to_tv(intel_attached_encoder(connector));
}
static bool
intel_tv_get_hw_state(struct intel_encoder *encoder, enum pipe *pipe)
{
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
u32 tmp = I915_READ(TV_CTL);
*pipe = (tmp & TV_ENC_PIPE_SEL_MASK) >> TV_ENC_PIPE_SEL_SHIFT;
return tmp & TV_ENC_ENABLE;
}
static void
intel_enable_tv(struct intel_encoder *encoder,
const struct intel_crtc_state *pipe_config,
const struct drm_connector_state *conn_state)
{
struct drm_device *dev = encoder->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
/* Prevents vblank waits from timing out in intel_tv_detect_type() */
intel_wait_for_vblank(dev_priv,
to_intel_crtc(pipe_config->base.crtc)->pipe);
I915_WRITE(TV_CTL, I915_READ(TV_CTL) | TV_ENC_ENABLE);
}
static void
intel_disable_tv(struct intel_encoder *encoder,
const struct intel_crtc_state *old_crtc_state,
const struct drm_connector_state *old_conn_state)
{
struct drm_device *dev = encoder->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
I915_WRITE(TV_CTL, I915_READ(TV_CTL) & ~TV_ENC_ENABLE);
}
static const struct tv_mode *intel_tv_mode_find(const struct drm_connector_state *conn_state)
{
int format = conn_state->tv.mode;
return &tv_modes[format];
}
static enum drm_mode_status
intel_tv_mode_valid(struct drm_connector *connector,
struct drm_display_mode *mode)
{
const struct tv_mode *tv_mode = intel_tv_mode_find(connector->state);
int max_dotclk = to_i915(connector->dev)->max_dotclk_freq;
if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
return MODE_NO_DBLESCAN;
if (mode->clock > max_dotclk)
return MODE_CLOCK_HIGH;
/* Ensure TV refresh is close to desired refresh */
if (tv_mode && abs(tv_mode->refresh - drm_mode_vrefresh(mode) * 1000)
< 1000)
return MODE_OK;
return MODE_CLOCK_RANGE;
}
static int
intel_tv_mode_vdisplay(const struct tv_mode *tv_mode)
{
if (tv_mode->progressive)
return tv_mode->nbr_end + 1;
else
return 2 * (tv_mode->nbr_end + 1);
}
static void
intel_tv_mode_to_mode(struct drm_display_mode *mode,
const struct tv_mode *tv_mode)
{
mode->clock = tv_mode->clock /
(tv_mode->oversample >> !tv_mode->progressive);
/*
* tv_mode horizontal timings:
*
* hsync_end
* | hblank_end
* | | hblank_start
* | | | htotal
* | _______ |
* ____/ \___
* \__/ \
*/
mode->hdisplay =
tv_mode->hblank_start - tv_mode->hblank_end;
mode->hsync_start = mode->hdisplay +
tv_mode->htotal - tv_mode->hblank_start;
mode->hsync_end = mode->hsync_start +
tv_mode->hsync_end;
mode->htotal = tv_mode->htotal + 1;
/*
* tv_mode vertical timings:
*
* vsync_start
* | vsync_end
* | | vi_end nbr_end
* | | | |
* | | _______
* \__ ____/ \
* \__/
*/
mode->vdisplay = intel_tv_mode_vdisplay(tv_mode);
if (tv_mode->progressive) {
mode->vsync_start = mode->vdisplay +
tv_mode->vsync_start_f1 + 1;
mode->vsync_end = mode->vsync_start +
tv_mode->vsync_len;
mode->vtotal = mode->vdisplay +
tv_mode->vi_end_f1 + 1;
} else {
mode->vsync_start = mode->vdisplay +
tv_mode->vsync_start_f1 + 1 +
tv_mode->vsync_start_f2 + 1;
mode->vsync_end = mode->vsync_start +
2 * tv_mode->vsync_len;
mode->vtotal = mode->vdisplay +
tv_mode->vi_end_f1 + 1 +
tv_mode->vi_end_f2 + 1;
}
/* TV has it's own notion of sync and other mode flags, so clear them. */
mode->flags = 0;
mode->vrefresh = 0;
mode->vrefresh = drm_mode_vrefresh(mode);
snprintf(mode->name, sizeof(mode->name),
"%dx%d%c (%s)",
mode->hdisplay, mode->vdisplay,
tv_mode->progressive ? 'p' : 'i',
tv_mode->name);
}
static void intel_tv_scale_mode_horiz(struct drm_display_mode *mode,
int hdisplay, int left_margin,
int right_margin)
{
int hsync_start = mode->hsync_start - mode->hdisplay + right_margin;
int hsync_end = mode->hsync_end - mode->hdisplay + right_margin;
int new_htotal = mode->htotal * hdisplay /
(mode->hdisplay - left_margin - right_margin);
mode->clock = mode->clock * new_htotal / mode->htotal;
mode->hdisplay = hdisplay;
mode->hsync_start = hdisplay + hsync_start * new_htotal / mode->htotal;
mode->hsync_end = hdisplay + hsync_end * new_htotal / mode->htotal;
mode->htotal = new_htotal;
}
static void intel_tv_scale_mode_vert(struct drm_display_mode *mode,
int vdisplay, int top_margin,
int bottom_margin)
{
int vsync_start = mode->vsync_start - mode->vdisplay + bottom_margin;
int vsync_end = mode->vsync_end - mode->vdisplay + bottom_margin;
int new_vtotal = mode->vtotal * vdisplay /
(mode->vdisplay - top_margin - bottom_margin);
mode->clock = mode->clock * new_vtotal / mode->vtotal;
mode->vdisplay = vdisplay;
mode->vsync_start = vdisplay + vsync_start * new_vtotal / mode->vtotal;
mode->vsync_end = vdisplay + vsync_end * new_vtotal / mode->vtotal;
mode->vtotal = new_vtotal;
}
static void
intel_tv_get_config(struct intel_encoder *encoder,
struct intel_crtc_state *pipe_config)
{
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
struct drm_display_mode *adjusted_mode =
&pipe_config->base.adjusted_mode;
struct drm_display_mode mode = {};
u32 tv_ctl, hctl1, hctl3, vctl1, vctl2, tmp;
struct tv_mode tv_mode = {};
int hdisplay = adjusted_mode->crtc_hdisplay;
int vdisplay = adjusted_mode->crtc_vdisplay;
int xsize, ysize, xpos, ypos;
pipe_config->output_types |= BIT(INTEL_OUTPUT_TVOUT);
tv_ctl = I915_READ(TV_CTL);
hctl1 = I915_READ(TV_H_CTL_1);
hctl3 = I915_READ(TV_H_CTL_3);
vctl1 = I915_READ(TV_V_CTL_1);
vctl2 = I915_READ(TV_V_CTL_2);
tv_mode.htotal = (hctl1 & TV_HTOTAL_MASK) >> TV_HTOTAL_SHIFT;
tv_mode.hsync_end = (hctl1 & TV_HSYNC_END_MASK) >> TV_HSYNC_END_SHIFT;
tv_mode.hblank_start = (hctl3 & TV_HBLANK_START_MASK) >> TV_HBLANK_START_SHIFT;
tv_mode.hblank_end = (hctl3 & TV_HSYNC_END_MASK) >> TV_HBLANK_END_SHIFT;
tv_mode.nbr_end = (vctl1 & TV_NBR_END_MASK) >> TV_NBR_END_SHIFT;
tv_mode.vi_end_f1 = (vctl1 & TV_VI_END_F1_MASK) >> TV_VI_END_F1_SHIFT;
tv_mode.vi_end_f2 = (vctl1 & TV_VI_END_F2_MASK) >> TV_VI_END_F2_SHIFT;
tv_mode.vsync_len = (vctl2 & TV_VSYNC_LEN_MASK) >> TV_VSYNC_LEN_SHIFT;
tv_mode.vsync_start_f1 = (vctl2 & TV_VSYNC_START_F1_MASK) >> TV_VSYNC_START_F1_SHIFT;
tv_mode.vsync_start_f2 = (vctl2 & TV_VSYNC_START_F2_MASK) >> TV_VSYNC_START_F2_SHIFT;
tv_mode.clock = pipe_config->port_clock;
tv_mode.progressive = tv_ctl & TV_PROGRESSIVE;
switch (tv_ctl & TV_OVERSAMPLE_MASK) {
case TV_OVERSAMPLE_8X:
tv_mode.oversample = 8;
break;
case TV_OVERSAMPLE_4X:
tv_mode.oversample = 4;
break;
case TV_OVERSAMPLE_2X:
tv_mode.oversample = 2;
break;
default:
tv_mode.oversample = 1;
break;
}
tmp = I915_READ(TV_WIN_POS);
xpos = tmp >> 16;
ypos = tmp & 0xffff;
tmp = I915_READ(TV_WIN_SIZE);
xsize = tmp >> 16;
ysize = tmp & 0xffff;
intel_tv_mode_to_mode(&mode, &tv_mode);
DRM_DEBUG_KMS("TV mode:\n");
drm_mode_debug_printmodeline(&mode);
intel_tv_scale_mode_horiz(&mode, hdisplay,
xpos, mode.hdisplay - xsize - xpos);
intel_tv_scale_mode_vert(&mode, vdisplay,
ypos, mode.vdisplay - ysize - ypos);
adjusted_mode->crtc_clock = mode.clock;
if (adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE)
adjusted_mode->crtc_clock /= 2;
/* pixel counter doesn't work on i965gm TV output */
if (IS_I965GM(dev_priv))
adjusted_mode->private_flags |=
I915_MODE_FLAG_USE_SCANLINE_COUNTER;
}
static bool intel_tv_source_too_wide(struct drm_i915_private *dev_priv,
int hdisplay)
{
return IS_GEN(dev_priv, 3) && hdisplay > 1024;
}
static bool intel_tv_vert_scaling(const struct drm_display_mode *tv_mode,
const struct drm_connector_state *conn_state,
int vdisplay)
{
return tv_mode->crtc_vdisplay -
conn_state->tv.margins.top -
conn_state->tv.margins.bottom !=
vdisplay;
}
static int
intel_tv_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);
struct intel_tv_connector_state *tv_conn_state =
to_intel_tv_connector_state(conn_state);
const struct tv_mode *tv_mode = intel_tv_mode_find(conn_state);
struct drm_display_mode *adjusted_mode =
&pipe_config->base.adjusted_mode;
int hdisplay = adjusted_mode->crtc_hdisplay;
int vdisplay = adjusted_mode->crtc_vdisplay;
if (!tv_mode)
return -EINVAL;
if (adjusted_mode->flags & DRM_MODE_FLAG_DBLSCAN)
return -EINVAL;
pipe_config->output_format = INTEL_OUTPUT_FORMAT_RGB;
DRM_DEBUG_KMS("forcing bpc to 8 for TV\n");
pipe_config->pipe_bpp = 8*3;
pipe_config->port_clock = tv_mode->clock;
intel_tv_mode_to_mode(adjusted_mode, tv_mode);
drm_mode_set_crtcinfo(adjusted_mode, 0);
if (intel_tv_source_too_wide(dev_priv, hdisplay) ||
!intel_tv_vert_scaling(adjusted_mode, conn_state, vdisplay)) {
int extra, top, bottom;
extra = adjusted_mode->crtc_vdisplay - vdisplay;
if (extra < 0) {
DRM_DEBUG_KMS("No vertical scaling for >1024 pixel wide modes\n");
return -EINVAL;
}
/* Need to turn off the vertical filter and center the image */
/* Attempt to maintain the relative sizes of the margins */
top = conn_state->tv.margins.top;
bottom = conn_state->tv.margins.bottom;
if (top + bottom)
top = extra * top / (top + bottom);
else
top = extra / 2;
bottom = extra - top;
tv_conn_state->margins.top = top;
tv_conn_state->margins.bottom = bottom;
tv_conn_state->bypass_vfilter = true;
if (!tv_mode->progressive) {
adjusted_mode->clock /= 2;
adjusted_mode->crtc_clock /= 2;
adjusted_mode->flags |= DRM_MODE_FLAG_INTERLACE;
}
} else {
tv_conn_state->margins.top = conn_state->tv.margins.top;
tv_conn_state->margins.bottom = conn_state->tv.margins.bottom;
tv_conn_state->bypass_vfilter = false;
}
DRM_DEBUG_KMS("TV mode:\n");
drm_mode_debug_printmodeline(adjusted_mode);
/*
* The pipe scanline counter behaviour looks as follows when
* using the TV encoder:
*
* time ->
*
* dsl=vtotal-1 | |
* || ||
* ___| | ___| |
* / | / |
* / | / |
* dsl=0 ___/ |_____/ |
* | | | | | |
* ^ ^ ^ ^ ^
* | | | | pipe vblank/first part of tv vblank
* | | | bottom margin
* | | active
* | top margin
* remainder of tv vblank
*
* When the TV encoder is used the pipe wants to run faster
* than expected rate. During the active portion the TV
* encoder stalls the pipe every few lines to keep it in
* check. When the TV encoder reaches the bottom margin the
* pipe simply stops. Once we reach the TV vblank the pipe is
* no longer stalled and it runs at the max rate (apparently
* oversample clock on gen3, cdclk on gen4). Once the pipe
* reaches the pipe vtotal the pipe stops for the remainder
* of the TV vblank/top margin. The pipe starts up again when
* the TV encoder exits the top margin.
*
* To avoid huge hassles for vblank timestamping we scale
* the pipe timings as if the pipe always runs at the average
* rate it maintains during the active period. This also
* gives us a reasonable guesstimate as to the pixel rate.
* Due to the variation in the actual pipe speed the scanline
* counter will give us slightly erroneous results during the
* TV vblank/margins. But since vtotal was selected such that
* it matches the average rate of the pipe during the active
* portion the error shouldn't cause any serious grief to
* vblank timestamps.
*
* For posterity here is the empirically derived formula
* that gives us the maximum length of the pipe vblank
* we can use without causing display corruption. Following
* this would allow us to have a ticking scanline counter
* everywhere except during the bottom margin (there the
* pipe always stops). Ie. this would eliminate the second
* flat portion of the above graph. However this would also
* complicate vblank timestamping as the pipe vtotal would
* no longer match the average rate the pipe runs at during
* the active portion. Hence following this formula seems
* more trouble that it's worth.
*
* if (IS_GEN(dev_priv, 4)) {
* num = cdclk * (tv_mode->oversample >> !tv_mode->progressive);
* den = tv_mode->clock;
* } else {
* num = tv_mode->oversample >> !tv_mode->progressive;
* den = 1;
* }
* max_pipe_vblank_len ~=
* (num * tv_htotal * (tv_vblank_len + top_margin)) /
* (den * pipe_htotal);
*/
intel_tv_scale_mode_horiz(adjusted_mode, hdisplay,
conn_state->tv.margins.left,
conn_state->tv.margins.right);
intel_tv_scale_mode_vert(adjusted_mode, vdisplay,
tv_conn_state->margins.top,
tv_conn_state->margins.bottom);
drm_mode_set_crtcinfo(adjusted_mode, 0);
adjusted_mode->name[0] = '\0';
/* pixel counter doesn't work on i965gm TV output */
if (IS_I965GM(dev_priv))
adjusted_mode->private_flags |=
I915_MODE_FLAG_USE_SCANLINE_COUNTER;
return 0;
}
static void
set_tv_mode_timings(struct drm_i915_private *dev_priv,
const struct tv_mode *tv_mode,
bool burst_ena)
{
u32 hctl1, hctl2, hctl3;
u32 vctl1, vctl2, vctl3, vctl4, vctl5, vctl6, vctl7;
hctl1 = (tv_mode->hsync_end << TV_HSYNC_END_SHIFT) |
(tv_mode->htotal << TV_HTOTAL_SHIFT);
hctl2 = (tv_mode->hburst_start << 16) |
(tv_mode->hburst_len << TV_HBURST_LEN_SHIFT);
if (burst_ena)
hctl2 |= TV_BURST_ENA;
hctl3 = (tv_mode->hblank_start << TV_HBLANK_START_SHIFT) |
(tv_mode->hblank_end << TV_HBLANK_END_SHIFT);
vctl1 = (tv_mode->nbr_end << TV_NBR_END_SHIFT) |
(tv_mode->vi_end_f1 << TV_VI_END_F1_SHIFT) |
(tv_mode->vi_end_f2 << TV_VI_END_F2_SHIFT);
vctl2 = (tv_mode->vsync_len << TV_VSYNC_LEN_SHIFT) |
(tv_mode->vsync_start_f1 << TV_VSYNC_START_F1_SHIFT) |
(tv_mode->vsync_start_f2 << TV_VSYNC_START_F2_SHIFT);
vctl3 = (tv_mode->veq_len << TV_VEQ_LEN_SHIFT) |
(tv_mode->veq_start_f1 << TV_VEQ_START_F1_SHIFT) |
(tv_mode->veq_start_f2 << TV_VEQ_START_F2_SHIFT);
if (tv_mode->veq_ena)
vctl3 |= TV_EQUAL_ENA;
vctl4 = (tv_mode->vburst_start_f1 << TV_VBURST_START_F1_SHIFT) |
(tv_mode->vburst_end_f1 << TV_VBURST_END_F1_SHIFT);
vctl5 = (tv_mode->vburst_start_f2 << TV_VBURST_START_F2_SHIFT) |
(tv_mode->vburst_end_f2 << TV_VBURST_END_F2_SHIFT);
vctl6 = (tv_mode->vburst_start_f3 << TV_VBURST_START_F3_SHIFT) |
(tv_mode->vburst_end_f3 << TV_VBURST_END_F3_SHIFT);
vctl7 = (tv_mode->vburst_start_f4 << TV_VBURST_START_F4_SHIFT) |
(tv_mode->vburst_end_f4 << TV_VBURST_END_F4_SHIFT);
I915_WRITE(TV_H_CTL_1, hctl1);
I915_WRITE(TV_H_CTL_2, hctl2);
I915_WRITE(TV_H_CTL_3, hctl3);
I915_WRITE(TV_V_CTL_1, vctl1);
I915_WRITE(TV_V_CTL_2, vctl2);
I915_WRITE(TV_V_CTL_3, vctl3);
I915_WRITE(TV_V_CTL_4, vctl4);
I915_WRITE(TV_V_CTL_5, vctl5);
I915_WRITE(TV_V_CTL_6, vctl6);
I915_WRITE(TV_V_CTL_7, vctl7);
}
static void set_color_conversion(struct drm_i915_private *dev_priv,
const struct color_conversion *color_conversion)
{
if (!color_conversion)
return;
I915_WRITE(TV_CSC_Y, (color_conversion->ry << 16) |
color_conversion->gy);
I915_WRITE(TV_CSC_Y2, (color_conversion->by << 16) |
color_conversion->ay);
I915_WRITE(TV_CSC_U, (color_conversion->ru << 16) |
color_conversion->gu);
I915_WRITE(TV_CSC_U2, (color_conversion->bu << 16) |
color_conversion->au);
I915_WRITE(TV_CSC_V, (color_conversion->rv << 16) |
color_conversion->gv);
I915_WRITE(TV_CSC_V2, (color_conversion->bv << 16) |
color_conversion->av);
}
static void intel_tv_pre_enable(struct intel_encoder *encoder,
const struct intel_crtc_state *pipe_config,
const struct drm_connector_state *conn_state)
{
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
struct intel_crtc *intel_crtc = to_intel_crtc(pipe_config->base.crtc);
struct intel_tv *intel_tv = enc_to_tv(encoder);
const struct intel_tv_connector_state *tv_conn_state =
to_intel_tv_connector_state(conn_state);
const struct tv_mode *tv_mode = intel_tv_mode_find(conn_state);
u32 tv_ctl, tv_filter_ctl;
u32 scctl1, scctl2, scctl3;
int i, j;
const struct video_levels *video_levels;
const struct color_conversion *color_conversion;
bool burst_ena;
int xpos, ypos;
unsigned int xsize, ysize;
if (!tv_mode)
return; /* can't happen (mode_prepare prevents this) */
tv_ctl = I915_READ(TV_CTL);
tv_ctl &= TV_CTL_SAVE;
switch (intel_tv->type) {
default:
case DRM_MODE_CONNECTOR_Unknown:
case DRM_MODE_CONNECTOR_Composite:
tv_ctl |= TV_ENC_OUTPUT_COMPOSITE;
video_levels = tv_mode->composite_levels;
color_conversion = tv_mode->composite_color;
burst_ena = tv_mode->burst_ena;
break;
case DRM_MODE_CONNECTOR_Component:
tv_ctl |= TV_ENC_OUTPUT_COMPONENT;
video_levels = &component_levels;
if (tv_mode->burst_ena)
color_conversion = &sdtv_csc_yprpb;
else
color_conversion = &hdtv_csc_yprpb;
burst_ena = false;
break;
case DRM_MODE_CONNECTOR_SVIDEO:
tv_ctl |= TV_ENC_OUTPUT_SVIDEO;
video_levels = tv_mode->svideo_levels;
color_conversion = tv_mode->svideo_color;
burst_ena = tv_mode->burst_ena;
break;
}
tv_ctl |= TV_ENC_PIPE_SEL(intel_crtc->pipe);
switch (tv_mode->oversample) {
case 8:
tv_ctl |= TV_OVERSAMPLE_8X;
break;
case 4:
tv_ctl |= TV_OVERSAMPLE_4X;
break;
case 2:
tv_ctl |= TV_OVERSAMPLE_2X;
break;
default:
tv_ctl |= TV_OVERSAMPLE_NONE;
break;
}
if (tv_mode->progressive)
tv_ctl |= TV_PROGRESSIVE;
if (tv_mode->trilevel_sync)
tv_ctl |= TV_TRILEVEL_SYNC;
if (tv_mode->pal_burst)
tv_ctl |= TV_PAL_BURST;
scctl1 = 0;
if (tv_mode->dda1_inc)
scctl1 |= TV_SC_DDA1_EN;
if (tv_mode->dda2_inc)
scctl1 |= TV_SC_DDA2_EN;
if (tv_mode->dda3_inc)
scctl1 |= TV_SC_DDA3_EN;
scctl1 |= tv_mode->sc_reset;
if (video_levels)
scctl1 |= video_levels->burst << TV_BURST_LEVEL_SHIFT;
scctl1 |= tv_mode->dda1_inc << TV_SCDDA1_INC_SHIFT;
scctl2 = tv_mode->dda2_size << TV_SCDDA2_SIZE_SHIFT |
tv_mode->dda2_inc << TV_SCDDA2_INC_SHIFT;
scctl3 = tv_mode->dda3_size << TV_SCDDA3_SIZE_SHIFT |
tv_mode->dda3_inc << TV_SCDDA3_INC_SHIFT;
/* Enable two fixes for the chips that need them. */
if (IS_I915GM(dev_priv))
tv_ctl |= TV_ENC_C0_FIX | TV_ENC_SDP_FIX;
set_tv_mode_timings(dev_priv, tv_mode, burst_ena);
I915_WRITE(TV_SC_CTL_1, scctl1);
I915_WRITE(TV_SC_CTL_2, scctl2);
I915_WRITE(TV_SC_CTL_3, scctl3);
set_color_conversion(dev_priv, color_conversion);
if (INTEL_GEN(dev_priv) >= 4)
I915_WRITE(TV_CLR_KNOBS, 0x00404000);
else
I915_WRITE(TV_CLR_KNOBS, 0x00606000);
if (video_levels)
I915_WRITE(TV_CLR_LEVEL,
((video_levels->black << TV_BLACK_LEVEL_SHIFT) |
(video_levels->blank << TV_BLANK_LEVEL_SHIFT)));
assert_pipe_disabled(dev_priv, intel_crtc->pipe);
/* Filter ctl must be set before TV_WIN_SIZE */
tv_filter_ctl = TV_AUTO_SCALE;
if (tv_conn_state->bypass_vfilter)
tv_filter_ctl |= TV_V_FILTER_BYPASS;
I915_WRITE(TV_FILTER_CTL_1, tv_filter_ctl);
xsize = tv_mode->hblank_start - tv_mode->hblank_end;
ysize = intel_tv_mode_vdisplay(tv_mode);
xpos = conn_state->tv.margins.left;
ypos = tv_conn_state->margins.top;
xsize -= (conn_state->tv.margins.left +
conn_state->tv.margins.right);
ysize -= (tv_conn_state->margins.top +
tv_conn_state->margins.bottom);
I915_WRITE(TV_WIN_POS, (xpos<<16)|ypos);
I915_WRITE(TV_WIN_SIZE, (xsize<<16)|ysize);
j = 0;
for (i = 0; i < 60; i++)
I915_WRITE(TV_H_LUMA(i), tv_mode->filter_table[j++]);
for (i = 0; i < 60; i++)
I915_WRITE(TV_H_CHROMA(i), tv_mode->filter_table[j++]);
for (i = 0; i < 43; i++)
I915_WRITE(TV_V_LUMA(i), tv_mode->filter_table[j++]);
for (i = 0; i < 43; i++)
I915_WRITE(TV_V_CHROMA(i), tv_mode->filter_table[j++]);
I915_WRITE(TV_DAC, I915_READ(TV_DAC) & TV_DAC_SAVE);
I915_WRITE(TV_CTL, tv_ctl);
}
static int
intel_tv_detect_type(struct intel_tv *intel_tv,
struct drm_connector *connector)
{
struct drm_crtc *crtc = connector->state->crtc;
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
struct drm_device *dev = connector->dev;
struct drm_i915_private *dev_priv = to_i915(dev);
u32 tv_ctl, save_tv_ctl;
u32 tv_dac, save_tv_dac;
int type;
/* Disable TV interrupts around load detect or we'll recurse */
if (connector->polled & DRM_CONNECTOR_POLL_HPD) {
spin_lock_irq(&dev_priv->irq_lock);
i915_disable_pipestat(dev_priv, 0,
PIPE_HOTPLUG_INTERRUPT_STATUS |
PIPE_HOTPLUG_TV_INTERRUPT_STATUS);
spin_unlock_irq(&dev_priv->irq_lock);
}
save_tv_dac = tv_dac = I915_READ(TV_DAC);
save_tv_ctl = tv_ctl = I915_READ(TV_CTL);
/* Poll for TV detection */
tv_ctl &= ~(TV_ENC_ENABLE | TV_ENC_PIPE_SEL_MASK | TV_TEST_MODE_MASK);
tv_ctl |= TV_TEST_MODE_MONITOR_DETECT;
tv_ctl |= TV_ENC_PIPE_SEL(intel_crtc->pipe);
tv_dac &= ~(TVDAC_SENSE_MASK | DAC_A_MASK | DAC_B_MASK | DAC_C_MASK);
tv_dac |= (TVDAC_STATE_CHG_EN |
TVDAC_A_SENSE_CTL |
TVDAC_B_SENSE_CTL |
TVDAC_C_SENSE_CTL |
DAC_CTL_OVERRIDE |
DAC_A_0_7_V |
DAC_B_0_7_V |
DAC_C_0_7_V);
/*
* The TV sense state should be cleared to zero on cantiga platform. Otherwise
* the TV is misdetected. This is hardware requirement.
*/
if (IS_GM45(dev_priv))
tv_dac &= ~(TVDAC_STATE_CHG_EN | TVDAC_A_SENSE_CTL |
TVDAC_B_SENSE_CTL | TVDAC_C_SENSE_CTL);
I915_WRITE(TV_CTL, tv_ctl);
I915_WRITE(TV_DAC, tv_dac);
POSTING_READ(TV_DAC);
intel_wait_for_vblank(dev_priv, intel_crtc->pipe);
type = -1;
tv_dac = I915_READ(TV_DAC);
DRM_DEBUG_KMS("TV detected: %x, %x\n", tv_ctl, tv_dac);
/*
* A B C
* 0 1 1 Composite
* 1 0 X svideo
* 0 0 0 Component
*/
if ((tv_dac & TVDAC_SENSE_MASK) == (TVDAC_B_SENSE | TVDAC_C_SENSE)) {
DRM_DEBUG_KMS("Detected Composite TV connection\n");
type = DRM_MODE_CONNECTOR_Composite;
} else if ((tv_dac & (TVDAC_A_SENSE|TVDAC_B_SENSE)) == TVDAC_A_SENSE) {
DRM_DEBUG_KMS("Detected S-Video TV connection\n");
type = DRM_MODE_CONNECTOR_SVIDEO;
} else if ((tv_dac & TVDAC_SENSE_MASK) == 0) {
DRM_DEBUG_KMS("Detected Component TV connection\n");
type = DRM_MODE_CONNECTOR_Component;
} else {
DRM_DEBUG_KMS("Unrecognised TV connection\n");
type = -1;
}
I915_WRITE(TV_DAC, save_tv_dac & ~TVDAC_STATE_CHG_EN);
I915_WRITE(TV_CTL, save_tv_ctl);
POSTING_READ(TV_CTL);
/* For unknown reasons the hw barfs if we don't do this vblank wait. */
intel_wait_for_vblank(dev_priv, intel_crtc->pipe);
/* Restore interrupt config */
if (connector->polled & DRM_CONNECTOR_POLL_HPD) {
spin_lock_irq(&dev_priv->irq_lock);
i915_enable_pipestat(dev_priv, 0,
PIPE_HOTPLUG_INTERRUPT_STATUS |
PIPE_HOTPLUG_TV_INTERRUPT_STATUS);
spin_unlock_irq(&dev_priv->irq_lock);
}
return type;
}
/*
* Here we set accurate tv format according to connector type
* i.e Component TV should not be assigned by NTSC or PAL
*/
static void intel_tv_find_better_format(struct drm_connector *connector)
{
struct intel_tv *intel_tv = intel_attached_tv(connector);
const struct tv_mode *tv_mode = intel_tv_mode_find(connector->state);
int i;
/* Component supports everything so we can keep the current mode */
if (intel_tv->type == DRM_MODE_CONNECTOR_Component)
return;
/* If the current mode is fine don't change it */
if (!tv_mode->component_only)
return;
for (i = 0; i < ARRAY_SIZE(tv_modes); i++) {
tv_mode = &tv_modes[i];
if (!tv_mode->component_only)
break;
}
connector->state->tv.mode = i;
}
static int
intel_tv_detect(struct drm_connector *connector,
struct drm_modeset_acquire_ctx *ctx,
bool force)
{
struct intel_tv *intel_tv = intel_attached_tv(connector);
enum drm_connector_status status;
int type;
DRM_DEBUG_KMS("[CONNECTOR:%d:%s] force=%d\n",
connector->base.id, connector->name,
force);
if (force) {
struct intel_load_detect_pipe tmp;
int ret;
ret = intel_get_load_detect_pipe(connector, NULL, &tmp, ctx);
if (ret < 0)
return ret;
if (ret > 0) {
type = intel_tv_detect_type(intel_tv, connector);
intel_release_load_detect_pipe(connector, &tmp, ctx);
status = type < 0 ?
connector_status_disconnected :
connector_status_connected;
} else
status = connector_status_unknown;
if (status == connector_status_connected) {
intel_tv->type = type;
intel_tv_find_better_format(connector);
}
return status;
} else
return connector->status;
}
static const struct input_res {
u16 w, h;
} input_res_table[] = {
{ 640, 480 },
{ 800, 600 },
{ 1024, 768 },
{ 1280, 1024 },
{ 848, 480 },
{ 1280, 720 },
{ 1920, 1080 },
};
/* Choose preferred mode according to line number of TV format */
static bool
intel_tv_is_preferred_mode(const struct drm_display_mode *mode,
const struct tv_mode *tv_mode)
{
int vdisplay = intel_tv_mode_vdisplay(tv_mode);
/* prefer 480 line modes for all SD TV modes */
if (vdisplay <= 576)
vdisplay = 480;
return vdisplay == mode->vdisplay;
}
static void
intel_tv_set_mode_type(struct drm_display_mode *mode,
const struct tv_mode *tv_mode)
{
mode->type = DRM_MODE_TYPE_DRIVER;
if (intel_tv_is_preferred_mode(mode, tv_mode))
mode->type |= DRM_MODE_TYPE_PREFERRED;
}
static int
intel_tv_get_modes(struct drm_connector *connector)
{
struct drm_i915_private *dev_priv = to_i915(connector->dev);
const struct tv_mode *tv_mode = intel_tv_mode_find(connector->state);
int i, count = 0;
for (i = 0; i < ARRAY_SIZE(input_res_table); i++) {
const struct input_res *input = &input_res_table[i];
struct drm_display_mode *mode;
if (input->w > 1024 &&
!tv_mode->progressive &&
!tv_mode->component_only)
continue;
/* no vertical scaling with wide sources on gen3 */
if (IS_GEN(dev_priv, 3) && input->w > 1024 &&
input->h > intel_tv_mode_vdisplay(tv_mode))
continue;
mode = drm_mode_create(connector->dev);
if (!mode)
continue;
/*
* We take the TV mode and scale it to look
* like it had the expected h/vdisplay. This
* provides the most information to userspace
* about the actual timings of the mode. We
* do ignore the margins though.
*/
intel_tv_mode_to_mode(mode, tv_mode);
if (count == 0) {
DRM_DEBUG_KMS("TV mode:\n");
drm_mode_debug_printmodeline(mode);
}
intel_tv_scale_mode_horiz(mode, input->w, 0, 0);
intel_tv_scale_mode_vert(mode, input->h, 0, 0);
intel_tv_set_mode_type(mode, tv_mode);
drm_mode_set_name(mode);
drm_mode_probed_add(connector, mode);
count++;
}
return count;
}
static const struct drm_connector_funcs intel_tv_connector_funcs = {
.late_register = intel_connector_register,
.early_unregister = intel_connector_unregister,
.destroy = intel_connector_destroy,
.fill_modes = drm_helper_probe_single_connector_modes,
.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
.atomic_duplicate_state = intel_tv_connector_duplicate_state,
};
static int intel_tv_atomic_check(struct drm_connector *connector,
struct drm_connector_state *new_state)
{
struct drm_crtc_state *new_crtc_state;
struct drm_connector_state *old_state;
if (!new_state->crtc)
return 0;
old_state = drm_atomic_get_old_connector_state(new_state->state, connector);
new_crtc_state = drm_atomic_get_new_crtc_state(new_state->state, new_state->crtc);
if (old_state->tv.mode != new_state->tv.mode ||
old_state->tv.margins.left != new_state->tv.margins.left ||
old_state->tv.margins.right != new_state->tv.margins.right ||
old_state->tv.margins.top != new_state->tv.margins.top ||
old_state->tv.margins.bottom != new_state->tv.margins.bottom) {
/* Force a modeset. */
new_crtc_state->connectors_changed = true;
}
return 0;
}
static const struct drm_connector_helper_funcs intel_tv_connector_helper_funcs = {
.detect_ctx = intel_tv_detect,
.mode_valid = intel_tv_mode_valid,
.get_modes = intel_tv_get_modes,
.atomic_check = intel_tv_atomic_check,
};
static const struct drm_encoder_funcs intel_tv_enc_funcs = {
.destroy = intel_encoder_destroy,
};
void
intel_tv_init(struct drm_i915_private *dev_priv)
{
struct drm_device *dev = &dev_priv->drm;
struct drm_connector *connector;
struct intel_tv *intel_tv;
struct intel_encoder *intel_encoder;
struct intel_connector *intel_connector;
u32 tv_dac_on, tv_dac_off, save_tv_dac;
const char *tv_format_names[ARRAY_SIZE(tv_modes)];
int i, initial_mode = 0;
struct drm_connector_state *state;
if ((I915_READ(TV_CTL) & TV_FUSE_STATE_MASK) == TV_FUSE_STATE_DISABLED)
return;
if (!intel_bios_is_tv_present(dev_priv)) {
DRM_DEBUG_KMS("Integrated TV is not present.\n");
return;
}
/*
* Sanity check the TV output by checking to see if the
* DAC register holds a value
*/
save_tv_dac = I915_READ(TV_DAC);
I915_WRITE(TV_DAC, save_tv_dac | TVDAC_STATE_CHG_EN);
tv_dac_on = I915_READ(TV_DAC);
I915_WRITE(TV_DAC, save_tv_dac & ~TVDAC_STATE_CHG_EN);
tv_dac_off = I915_READ(TV_DAC);
I915_WRITE(TV_DAC, save_tv_dac);
/*
* If the register does not hold the state change enable
* bit, (either as a 0 or a 1), assume it doesn't really
* exist
*/
if ((tv_dac_on & TVDAC_STATE_CHG_EN) == 0 ||
(tv_dac_off & TVDAC_STATE_CHG_EN) != 0)
return;
intel_tv = kzalloc(sizeof(*intel_tv), GFP_KERNEL);
if (!intel_tv) {
return;
}
intel_connector = intel_connector_alloc();
if (!intel_connector) {
kfree(intel_tv);
return;
}
intel_encoder = &intel_tv->base;
connector = &intel_connector->base;
state = connector->state;
/*
* The documentation, for the older chipsets at least, recommend
* using a polling method rather than hotplug detection for TVs.
* This is because in order to perform the hotplug detection, the PLLs
* for the TV must be kept alive increasing power drain and starving
* bandwidth from other encoders. Notably for instance, it causes
* pipe underruns on Crestline when this encoder is supposedly idle.
*
* More recent chipsets favour HDMI rather than integrated S-Video.
*/
intel_connector->polled = DRM_CONNECTOR_POLL_CONNECT;
drm_connector_init(dev, connector, &intel_tv_connector_funcs,
DRM_MODE_CONNECTOR_SVIDEO);
drm_encoder_init(dev, &intel_encoder->base, &intel_tv_enc_funcs,
DRM_MODE_ENCODER_TVDAC, "TV");
intel_encoder->compute_config = intel_tv_compute_config;
intel_encoder->get_config = intel_tv_get_config;
intel_encoder->pre_enable = intel_tv_pre_enable;
intel_encoder->enable = intel_enable_tv;
intel_encoder->disable = intel_disable_tv;
intel_encoder->get_hw_state = intel_tv_get_hw_state;
intel_connector->get_hw_state = intel_connector_get_hw_state;
intel_connector_attach_encoder(intel_connector, intel_encoder);
intel_encoder->type = INTEL_OUTPUT_TVOUT;
intel_encoder->power_domain = POWER_DOMAIN_PORT_OTHER;
intel_encoder->port = PORT_NONE;
intel_encoder->crtc_mask = (1 << 0) | (1 << 1);
intel_encoder->cloneable = 0;
intel_encoder->base.possible_crtcs = ((1 << 0) | (1 << 1));
intel_tv->type = DRM_MODE_CONNECTOR_Unknown;
/* BIOS margin values */
state->tv.margins.left = 54;
state->tv.margins.top = 36;
state->tv.margins.right = 46;
state->tv.margins.bottom = 37;
state->tv.mode = initial_mode;
drm_connector_helper_add(connector, &intel_tv_connector_helper_funcs);
connector->interlace_allowed = false;
connector->doublescan_allowed = false;
/* Create TV properties then attach current values */
for (i = 0; i < ARRAY_SIZE(tv_modes); i++) {
/* 1080p50/1080p60 not supported on gen3 */
if (IS_GEN(dev_priv, 3) &&
tv_modes[i].oversample == 1)
break;
tv_format_names[i] = tv_modes[i].name;
}
drm_mode_create_tv_properties(dev, i, tv_format_names);
drm_object_attach_property(&connector->base, dev->mode_config.tv_mode_property,
state->tv.mode);
drm_object_attach_property(&connector->base,
dev->mode_config.tv_left_margin_property,
state->tv.margins.left);
drm_object_attach_property(&connector->base,
dev->mode_config.tv_top_margin_property,
state->tv.margins.top);
drm_object_attach_property(&connector->base,
dev->mode_config.tv_right_margin_property,
state->tv.margins.right);
drm_object_attach_property(&connector->base,
dev->mode_config.tv_bottom_margin_property,
state->tv.margins.bottom);
}
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