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linux/drivers/gpu/drm/i915/intel_tv.c
Ville Syrjälä 68e94f62cf drm/i915/tv: Bypass the vertical filter if possible 
Let's switch the pipe into interlaced mode and switch off
the TV encoder vertical filter if the pipe vdisplay
matches the TV YSIZE exactly.

While I didn't measure it I presume this might reduce
the power consumption a little bit, and the pixel rate
is halved as the pipe will now fetching in interlaced
mode rather than in progressive mode (effectively the
same difference as between IF-ID vs. PF-ID pfit modes
on more modern hardware) so a bit easier on the memory
bandwidth.

Cc: Imre Deak <imre.deak@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190129141913.5515-2-ville.syrjala@linux.intel.com
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2019-01-29 23:27:31 +02:00

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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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