Ronald G. Minnich | 74fade4 | 2013-10-01 10:46:35 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2013 Google Inc. |
| 3 | * |
| 4 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 5 | * copy of this software and associated documentation files (the "Software"), |
| 6 | * to deal in the Software without restriction, including without limitation |
| 7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| 8 | * and/or sell copies of the Software, and to permit persons to whom the |
| 9 | * Software is furnished to do so, subject to the following conditions: |
| 10 | * |
| 11 | * The above copyright notice and this permission notice (including the next |
| 12 | * paragraph) shall be included in all copies or substantial portions of the |
| 13 | * Software. |
| 14 | * |
| 15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 18 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| 20 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS |
| 21 | * IN THE SOFTWARE. |
| 22 | * |
| 23 | * Authors: |
| 24 | * Keith Packard <keithp@keithp.com> |
| 25 | * |
| 26 | */ |
| 27 | |
| 28 | /* This code was created by the coccinnelle filters in the i915tool, |
| 29 | * with some final hand filtering. |
| 30 | */ |
| 31 | |
| 32 | #include <console/console.h> |
| 33 | #include <stdint.h> |
| 34 | #include <delay.h> |
| 35 | #include <drivers/intel/gma/i915.h> |
| 36 | #include <string.h> |
| 37 | |
| 38 | void compute_display_params(struct intel_dp *dp) |
| 39 | { |
| 40 | struct edid *edid = &(dp->edid); |
David Hendricks | 7dbf9c6 | 2015-07-30 18:49:48 -0700 | [diff] [blame] | 41 | struct edid_mode *mode = &edid->mode; |
Ronald G. Minnich | 74fade4 | 2013-10-01 10:46:35 -0700 | [diff] [blame] | 42 | |
| 43 | /* step 1: get the constants in the dp struct set up. */ |
| 44 | dp->lane_count = dp->dpcd[DP_MAX_LANE_COUNT]&DP_LANE_COUNT_MASK; |
| 45 | |
| 46 | dp->link_bw = dp->dpcd[DP_MAX_LINK_RATE]; |
| 47 | dp->clock = intel_dp_bw_code_to_link_rate(dp->link_bw); |
| 48 | dp->edid.link_clock = intel_dp_bw_code_to_link_rate(dp->link_bw); |
| 49 | |
| 50 | /* step 2. Do some computation of other stuff. */ |
| 51 | dp->bytes_per_pixel = dp->pipe_bits_per_pixel/8; |
| 52 | |
| 53 | dp->stride = edid->bytes_per_line; |
| 54 | |
David Hendricks | 7dbf9c6 | 2015-07-30 18:49:48 -0700 | [diff] [blame] | 55 | dp->htotal = (mode->ha - 1) | ((mode->ha + mode->hbl - 1) << 16); |
Ronald G. Minnich | 74fade4 | 2013-10-01 10:46:35 -0700 | [diff] [blame] | 56 | |
David Hendricks | 7dbf9c6 | 2015-07-30 18:49:48 -0700 | [diff] [blame] | 57 | dp->hblank = (mode->ha - 1) | ((mode->ha + mode->hbl - 1) << 16); |
Ronald G. Minnich | 74fade4 | 2013-10-01 10:46:35 -0700 | [diff] [blame] | 58 | |
David Hendricks | 7dbf9c6 | 2015-07-30 18:49:48 -0700 | [diff] [blame] | 59 | dp->hsync = (mode->ha + mode->hso - 1) | |
| 60 | ((mode->ha + mode->hso + mode->hspw - 1) << 16); |
Ronald G. Minnich | 74fade4 | 2013-10-01 10:46:35 -0700 | [diff] [blame] | 61 | |
David Hendricks | 7dbf9c6 | 2015-07-30 18:49:48 -0700 | [diff] [blame] | 62 | dp->vtotal = (mode->va - 1) | ((mode->va + mode->vbl - 1) << 16); |
Ronald G. Minnich | 74fade4 | 2013-10-01 10:46:35 -0700 | [diff] [blame] | 63 | |
David Hendricks | 7dbf9c6 | 2015-07-30 18:49:48 -0700 | [diff] [blame] | 64 | dp->vblank = (mode->va - 1) | ((mode->va + mode->vbl - 1) << 16); |
Ronald G. Minnich | 74fade4 | 2013-10-01 10:46:35 -0700 | [diff] [blame] | 65 | |
David Hendricks | 7dbf9c6 | 2015-07-30 18:49:48 -0700 | [diff] [blame] | 66 | dp->vsync = (mode->va + mode->vso - 1) | |
| 67 | ((mode->va + mode->vso + mode->vspw - 1) << 16); |
Ronald G. Minnich | 74fade4 | 2013-10-01 10:46:35 -0700 | [diff] [blame] | 68 | |
| 69 | /* PIPEASRC is wid-1 x ht-1 */ |
David Hendricks | 7dbf9c6 | 2015-07-30 18:49:48 -0700 | [diff] [blame] | 70 | dp->pipesrc = (mode->ha-1)<<16 | (mode->va-1); |
Ronald G. Minnich | 74fade4 | 2013-10-01 10:46:35 -0700 | [diff] [blame] | 71 | |
| 72 | dp->pfa_pos = 0; |
| 73 | |
| 74 | dp->pfa_ctl = PF_ENABLE | PF_FILTER_MED_3x3; |
| 75 | /* IVB hack */ |
| 76 | if (dp->gen == 6) |
| 77 | dp->pfa_ctl |= PF_PIPE_SEL_IVB(dp->pipe); |
| 78 | |
David Hendricks | 7dbf9c6 | 2015-07-30 18:49:48 -0700 | [diff] [blame] | 79 | dp->pfa_sz = (mode->ha << 16) | (mode->va); |
Ronald G. Minnich | 74fade4 | 2013-10-01 10:46:35 -0700 | [diff] [blame] | 80 | |
| 81 | /* step 3. Call the linux code we pulled in. */ |
| 82 | dp->flags = intel_ddi_calc_transcoder_flags(edid->panel_bits_per_pixel, |
| 83 | dp->port, |
| 84 | dp->pipe, |
| 85 | dp->type, |
| 86 | dp->lane_count, |
| 87 | dp->pfa_sz, |
David Hendricks | 7dbf9c6 | 2015-07-30 18:49:48 -0700 | [diff] [blame] | 88 | mode->phsync == '+'?1:0, |
| 89 | mode->pvsync == '+'?1:0); |
Ronald G. Minnich | 74fade4 | 2013-10-01 10:46:35 -0700 | [diff] [blame] | 90 | |
| 91 | dp->transcoder = intel_ddi_get_transcoder(dp->port, |
| 92 | dp->pipe); |
| 93 | |
| 94 | intel_dp_compute_m_n(edid->panel_bits_per_pixel, |
| 95 | dp->lane_count, |
David Hendricks | 7dbf9c6 | 2015-07-30 18:49:48 -0700 | [diff] [blame] | 96 | dp->edid.mode.pixel_clock, |
Ronald G. Minnich | 74fade4 | 2013-10-01 10:46:35 -0700 | [diff] [blame] | 97 | dp->edid.link_clock, |
| 98 | &dp->m_n); |
| 99 | |
| 100 | printk(BIOS_SPEW, "dp->lane_count = 0x%08x\n",dp->lane_count); |
| 101 | printk(BIOS_SPEW, "dp->stride = 0x%08x\n",dp->stride); |
| 102 | printk(BIOS_SPEW, "dp->htotal = 0x%08x\n", dp->htotal); |
| 103 | printk(BIOS_SPEW, "dp->hblank = 0x%08x\n", dp->hblank); |
| 104 | printk(BIOS_SPEW, "dp->hsync = 0x%08x\n", dp->hsync); |
| 105 | printk(BIOS_SPEW, "dp->vtotal = 0x%08x\n", dp->vtotal); |
| 106 | printk(BIOS_SPEW, "dp->vblank = 0x%08x\n", dp->vblank); |
| 107 | printk(BIOS_SPEW, "dp->vsync = 0x%08x\n", dp->vsync); |
| 108 | printk(BIOS_SPEW, "dp->pipesrc = 0x%08x\n", dp->pipesrc); |
| 109 | printk(BIOS_SPEW, "dp->pfa_pos = 0x%08x\n", dp->pfa_pos); |
| 110 | printk(BIOS_SPEW, "dp->pfa_ctl = 0x%08x\n", dp->pfa_ctl); |
| 111 | printk(BIOS_SPEW, "dp->pfa_sz = 0x%08x\n", dp->pfa_sz); |
| 112 | printk(BIOS_SPEW, "dp->link_m = 0x%08x\n", dp->m_n.link_m); |
| 113 | printk(BIOS_SPEW, "dp->link_n = 0x%08x\n", dp->m_n.link_n); |
| 114 | printk(BIOS_SPEW, "0x6f030 = 0x%08x\n", |
| 115 | TU_SIZE(dp->m_n.tu) | dp->m_n.gmch_m); |
| 116 | printk(BIOS_SPEW, "0x6f030 = 0x%08x\n", dp->m_n.gmch_m); |
| 117 | printk(BIOS_SPEW, "0x6f034 = 0x%08x\n", dp->m_n.gmch_n); |
| 118 | printk(BIOS_SPEW, "dp->flags = 0x%08x\n", dp->flags); |
| 119 | } |