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![Sonika Jindal](/assets/img/avatar_default.png)
Rename the defines to have levels instead of values for vswing and pre-emph levels as the values may differ in other scenarios like low vswing of eDP1.4 where the values are different. Done using following cocci patch for each define: @@ @@ # define DP_TRAIN_VOLTAGE_SWING_400 (0 << 0) + # define DP_TRAIN_VOLTAGE_SWING_LEVEL_0 (0 << 0) ... Signed-off-by: Sonika Jindal <sonika.jindal@intel.com> Acked-by: Dave Airlie <airlied@gmail.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
597 lines
16 KiB
C
597 lines
16 KiB
C
/*
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* Copyright (c) 2006 Intel Corporation
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Authors:
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* Eric Anholt <eric@anholt.net>
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*
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*/
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#include <drm/drmP.h>
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#include <drm/drm.h>
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#include <drm/gma_drm.h>
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#include "psb_drv.h"
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#include "psb_intel_drv.h"
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#include "psb_intel_reg.h"
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#include "intel_bios.h"
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#define SLAVE_ADDR1 0x70
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#define SLAVE_ADDR2 0x72
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static void *find_section(struct bdb_header *bdb, int section_id)
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{
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u8 *base = (u8 *)bdb;
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int index = 0;
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u16 total, current_size;
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u8 current_id;
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/* skip to first section */
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index += bdb->header_size;
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total = bdb->bdb_size;
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/* walk the sections looking for section_id */
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while (index < total) {
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current_id = *(base + index);
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index++;
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current_size = *((u16 *)(base + index));
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index += 2;
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if (current_id == section_id)
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return base + index;
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index += current_size;
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}
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return NULL;
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}
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static void
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parse_edp(struct drm_psb_private *dev_priv, struct bdb_header *bdb)
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{
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struct bdb_edp *edp;
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struct edp_power_seq *edp_pps;
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struct edp_link_params *edp_link_params;
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uint8_t panel_type;
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edp = find_section(bdb, BDB_EDP);
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dev_priv->edp.bpp = 18;
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if (!edp) {
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if (dev_priv->edp.support) {
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DRM_DEBUG_KMS("No eDP BDB found but eDP panel supported, assume %dbpp panel color depth.\n",
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dev_priv->edp.bpp);
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}
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return;
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}
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panel_type = dev_priv->panel_type;
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switch ((edp->color_depth >> (panel_type * 2)) & 3) {
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case EDP_18BPP:
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dev_priv->edp.bpp = 18;
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break;
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case EDP_24BPP:
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dev_priv->edp.bpp = 24;
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break;
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case EDP_30BPP:
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dev_priv->edp.bpp = 30;
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break;
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}
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/* Get the eDP sequencing and link info */
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edp_pps = &edp->power_seqs[panel_type];
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edp_link_params = &edp->link_params[panel_type];
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dev_priv->edp.pps = *edp_pps;
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DRM_DEBUG_KMS("EDP timing in vbt t1_t3 %d t8 %d t9 %d t10 %d t11_t12 %d\n",
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dev_priv->edp.pps.t1_t3, dev_priv->edp.pps.t8,
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dev_priv->edp.pps.t9, dev_priv->edp.pps.t10,
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dev_priv->edp.pps.t11_t12);
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dev_priv->edp.rate = edp_link_params->rate ? DP_LINK_BW_2_7 :
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DP_LINK_BW_1_62;
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switch (edp_link_params->lanes) {
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case 0:
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dev_priv->edp.lanes = 1;
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break;
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case 1:
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dev_priv->edp.lanes = 2;
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break;
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case 3:
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default:
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dev_priv->edp.lanes = 4;
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break;
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}
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DRM_DEBUG_KMS("VBT reports EDP: Lane_count %d, Lane_rate %d, Bpp %d\n",
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dev_priv->edp.lanes, dev_priv->edp.rate, dev_priv->edp.bpp);
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switch (edp_link_params->preemphasis) {
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case 0:
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dev_priv->edp.preemphasis = DP_TRAIN_PRE_EMPH_LEVEL_0;
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break;
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case 1:
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dev_priv->edp.preemphasis = DP_TRAIN_PRE_EMPH_LEVEL_1;
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break;
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case 2:
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dev_priv->edp.preemphasis = DP_TRAIN_PRE_EMPH_LEVEL_2;
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break;
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case 3:
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dev_priv->edp.preemphasis = DP_TRAIN_PRE_EMPH_LEVEL_3;
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break;
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}
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switch (edp_link_params->vswing) {
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case 0:
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dev_priv->edp.vswing = DP_TRAIN_VOLTAGE_SWING_LEVEL_0;
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break;
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case 1:
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dev_priv->edp.vswing = DP_TRAIN_VOLTAGE_SWING_LEVEL_1;
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break;
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case 2:
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dev_priv->edp.vswing = DP_TRAIN_VOLTAGE_SWING_LEVEL_2;
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break;
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case 3:
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dev_priv->edp.vswing = DP_TRAIN_VOLTAGE_SWING_LEVEL_3;
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break;
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}
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DRM_DEBUG_KMS("VBT reports EDP: VSwing %d, Preemph %d\n",
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dev_priv->edp.vswing, dev_priv->edp.preemphasis);
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}
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static u16
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get_blocksize(void *p)
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{
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u16 *block_ptr, block_size;
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block_ptr = (u16 *)((char *)p - 2);
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block_size = *block_ptr;
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return block_size;
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}
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static void fill_detail_timing_data(struct drm_display_mode *panel_fixed_mode,
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struct lvds_dvo_timing *dvo_timing)
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{
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panel_fixed_mode->hdisplay = (dvo_timing->hactive_hi << 8) |
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dvo_timing->hactive_lo;
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panel_fixed_mode->hsync_start = panel_fixed_mode->hdisplay +
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((dvo_timing->hsync_off_hi << 8) | dvo_timing->hsync_off_lo);
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panel_fixed_mode->hsync_end = panel_fixed_mode->hsync_start +
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dvo_timing->hsync_pulse_width;
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panel_fixed_mode->htotal = panel_fixed_mode->hdisplay +
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((dvo_timing->hblank_hi << 8) | dvo_timing->hblank_lo);
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panel_fixed_mode->vdisplay = (dvo_timing->vactive_hi << 8) |
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dvo_timing->vactive_lo;
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panel_fixed_mode->vsync_start = panel_fixed_mode->vdisplay +
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dvo_timing->vsync_off;
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panel_fixed_mode->vsync_end = panel_fixed_mode->vsync_start +
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dvo_timing->vsync_pulse_width;
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panel_fixed_mode->vtotal = panel_fixed_mode->vdisplay +
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((dvo_timing->vblank_hi << 8) | dvo_timing->vblank_lo);
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panel_fixed_mode->clock = dvo_timing->clock * 10;
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panel_fixed_mode->type = DRM_MODE_TYPE_PREFERRED;
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if (dvo_timing->hsync_positive)
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panel_fixed_mode->flags |= DRM_MODE_FLAG_PHSYNC;
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else
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panel_fixed_mode->flags |= DRM_MODE_FLAG_NHSYNC;
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if (dvo_timing->vsync_positive)
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panel_fixed_mode->flags |= DRM_MODE_FLAG_PVSYNC;
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else
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panel_fixed_mode->flags |= DRM_MODE_FLAG_NVSYNC;
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/* Some VBTs have bogus h/vtotal values */
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if (panel_fixed_mode->hsync_end > panel_fixed_mode->htotal)
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panel_fixed_mode->htotal = panel_fixed_mode->hsync_end + 1;
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if (panel_fixed_mode->vsync_end > panel_fixed_mode->vtotal)
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panel_fixed_mode->vtotal = panel_fixed_mode->vsync_end + 1;
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drm_mode_set_name(panel_fixed_mode);
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}
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static void parse_backlight_data(struct drm_psb_private *dev_priv,
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struct bdb_header *bdb)
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{
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struct bdb_lvds_backlight *vbt_lvds_bl = NULL;
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struct bdb_lvds_backlight *lvds_bl;
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u8 p_type = 0;
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void *bl_start = NULL;
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struct bdb_lvds_options *lvds_opts
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= find_section(bdb, BDB_LVDS_OPTIONS);
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dev_priv->lvds_bl = NULL;
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if (lvds_opts)
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p_type = lvds_opts->panel_type;
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else
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return;
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bl_start = find_section(bdb, BDB_LVDS_BACKLIGHT);
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vbt_lvds_bl = (struct bdb_lvds_backlight *)(bl_start + 1) + p_type;
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lvds_bl = kmemdup(vbt_lvds_bl, sizeof(*vbt_lvds_bl), GFP_KERNEL);
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if (!lvds_bl) {
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dev_err(dev_priv->dev->dev, "out of memory for backlight data\n");
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return;
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}
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dev_priv->lvds_bl = lvds_bl;
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}
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/* Try to find integrated panel data */
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static void parse_lfp_panel_data(struct drm_psb_private *dev_priv,
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struct bdb_header *bdb)
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{
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struct bdb_lvds_options *lvds_options;
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struct bdb_lvds_lfp_data *lvds_lfp_data;
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struct bdb_lvds_lfp_data_entry *entry;
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struct lvds_dvo_timing *dvo_timing;
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struct drm_display_mode *panel_fixed_mode;
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/* Defaults if we can't find VBT info */
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dev_priv->lvds_dither = 0;
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dev_priv->lvds_vbt = 0;
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lvds_options = find_section(bdb, BDB_LVDS_OPTIONS);
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if (!lvds_options)
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return;
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dev_priv->lvds_dither = lvds_options->pixel_dither;
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dev_priv->panel_type = lvds_options->panel_type;
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if (lvds_options->panel_type == 0xff)
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return;
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lvds_lfp_data = find_section(bdb, BDB_LVDS_LFP_DATA);
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if (!lvds_lfp_data)
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return;
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entry = &lvds_lfp_data->data[lvds_options->panel_type];
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dvo_timing = &entry->dvo_timing;
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panel_fixed_mode = kzalloc(sizeof(*panel_fixed_mode),
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GFP_KERNEL);
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if (panel_fixed_mode == NULL) {
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dev_err(dev_priv->dev->dev, "out of memory for fixed panel mode\n");
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return;
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}
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dev_priv->lvds_vbt = 1;
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fill_detail_timing_data(panel_fixed_mode, dvo_timing);
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if (panel_fixed_mode->htotal > 0 && panel_fixed_mode->vtotal > 0) {
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dev_priv->lfp_lvds_vbt_mode = panel_fixed_mode;
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drm_mode_debug_printmodeline(panel_fixed_mode);
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} else {
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dev_dbg(dev_priv->dev->dev, "ignoring invalid LVDS VBT\n");
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dev_priv->lvds_vbt = 0;
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kfree(panel_fixed_mode);
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}
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return;
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}
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/* Try to find sdvo panel data */
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static void parse_sdvo_panel_data(struct drm_psb_private *dev_priv,
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struct bdb_header *bdb)
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{
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struct bdb_sdvo_lvds_options *sdvo_lvds_options;
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struct lvds_dvo_timing *dvo_timing;
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struct drm_display_mode *panel_fixed_mode;
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dev_priv->sdvo_lvds_vbt_mode = NULL;
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sdvo_lvds_options = find_section(bdb, BDB_SDVO_LVDS_OPTIONS);
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if (!sdvo_lvds_options)
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return;
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dvo_timing = find_section(bdb, BDB_SDVO_PANEL_DTDS);
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if (!dvo_timing)
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return;
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panel_fixed_mode = kzalloc(sizeof(*panel_fixed_mode), GFP_KERNEL);
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if (!panel_fixed_mode)
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return;
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fill_detail_timing_data(panel_fixed_mode,
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dvo_timing + sdvo_lvds_options->panel_type);
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dev_priv->sdvo_lvds_vbt_mode = panel_fixed_mode;
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return;
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}
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static void parse_general_features(struct drm_psb_private *dev_priv,
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struct bdb_header *bdb)
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{
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struct bdb_general_features *general;
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/* Set sensible defaults in case we can't find the general block */
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dev_priv->int_tv_support = 1;
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dev_priv->int_crt_support = 1;
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general = find_section(bdb, BDB_GENERAL_FEATURES);
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if (general) {
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dev_priv->int_tv_support = general->int_tv_support;
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dev_priv->int_crt_support = general->int_crt_support;
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dev_priv->lvds_use_ssc = general->enable_ssc;
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if (dev_priv->lvds_use_ssc) {
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dev_priv->lvds_ssc_freq
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= general->ssc_freq ? 100 : 96;
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}
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}
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}
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static void
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parse_sdvo_device_mapping(struct drm_psb_private *dev_priv,
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struct bdb_header *bdb)
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{
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struct sdvo_device_mapping *p_mapping;
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struct bdb_general_definitions *p_defs;
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struct child_device_config *p_child;
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int i, child_device_num, count;
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u16 block_size;
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p_defs = find_section(bdb, BDB_GENERAL_DEFINITIONS);
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if (!p_defs) {
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DRM_DEBUG_KMS("No general definition block is found, unable to construct sdvo mapping.\n");
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return;
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}
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/* judge whether the size of child device meets the requirements.
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* If the child device size obtained from general definition block
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* is different with sizeof(struct child_device_config), skip the
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* parsing of sdvo device info
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*/
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if (p_defs->child_dev_size != sizeof(*p_child)) {
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/* different child dev size . Ignore it */
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DRM_DEBUG_KMS("different child size is found. Invalid.\n");
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return;
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}
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/* get the block size of general definitions */
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block_size = get_blocksize(p_defs);
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/* get the number of child device */
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child_device_num = (block_size - sizeof(*p_defs)) /
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sizeof(*p_child);
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count = 0;
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for (i = 0; i < child_device_num; i++) {
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p_child = &(p_defs->devices[i]);
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if (!p_child->device_type) {
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/* skip the device block if device type is invalid */
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continue;
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}
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if (p_child->slave_addr != SLAVE_ADDR1 &&
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p_child->slave_addr != SLAVE_ADDR2) {
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/*
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* If the slave address is neither 0x70 nor 0x72,
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* it is not a SDVO device. Skip it.
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*/
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continue;
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}
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if (p_child->dvo_port != DEVICE_PORT_DVOB &&
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p_child->dvo_port != DEVICE_PORT_DVOC) {
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/* skip the incorrect SDVO port */
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DRM_DEBUG_KMS("Incorrect SDVO port. Skip it\n");
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continue;
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}
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DRM_DEBUG_KMS("the SDVO device with slave addr %2x is found on"
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" %s port\n",
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p_child->slave_addr,
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(p_child->dvo_port == DEVICE_PORT_DVOB) ?
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"SDVOB" : "SDVOC");
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p_mapping = &(dev_priv->sdvo_mappings[p_child->dvo_port - 1]);
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if (!p_mapping->initialized) {
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p_mapping->dvo_port = p_child->dvo_port;
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p_mapping->slave_addr = p_child->slave_addr;
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p_mapping->dvo_wiring = p_child->dvo_wiring;
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p_mapping->ddc_pin = p_child->ddc_pin;
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p_mapping->i2c_pin = p_child->i2c_pin;
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p_mapping->initialized = 1;
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DRM_DEBUG_KMS("SDVO device: dvo=%x, addr=%x, wiring=%d, ddc_pin=%d, i2c_pin=%d\n",
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p_mapping->dvo_port,
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p_mapping->slave_addr,
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p_mapping->dvo_wiring,
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p_mapping->ddc_pin,
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p_mapping->i2c_pin);
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} else {
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DRM_DEBUG_KMS("Maybe one SDVO port is shared by "
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"two SDVO device.\n");
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}
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if (p_child->slave2_addr) {
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/* Maybe this is a SDVO device with multiple inputs */
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/* And the mapping info is not added */
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DRM_DEBUG_KMS("there exists the slave2_addr. Maybe this"
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" is a SDVO device with multiple inputs.\n");
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}
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count++;
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}
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if (!count) {
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/* No SDVO device info is found */
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DRM_DEBUG_KMS("No SDVO device info is found in VBT\n");
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}
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return;
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}
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static void
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parse_driver_features(struct drm_psb_private *dev_priv,
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struct bdb_header *bdb)
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{
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struct bdb_driver_features *driver;
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driver = find_section(bdb, BDB_DRIVER_FEATURES);
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if (!driver)
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return;
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if (driver->lvds_config == BDB_DRIVER_FEATURE_EDP)
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dev_priv->edp.support = 1;
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/* This bit means to use 96Mhz for DPLL_A or not */
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if (driver->primary_lfp_id)
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dev_priv->dplla_96mhz = true;
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else
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dev_priv->dplla_96mhz = false;
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}
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static void
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parse_device_mapping(struct drm_psb_private *dev_priv,
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struct bdb_header *bdb)
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{
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struct bdb_general_definitions *p_defs;
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struct child_device_config *p_child, *child_dev_ptr;
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int i, child_device_num, count;
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u16 block_size;
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p_defs = find_section(bdb, BDB_GENERAL_DEFINITIONS);
|
|
if (!p_defs) {
|
|
DRM_DEBUG_KMS("No general definition block is found, no devices defined.\n");
|
|
return;
|
|
}
|
|
/* judge whether the size of child device meets the requirements.
|
|
* If the child device size obtained from general definition block
|
|
* is different with sizeof(struct child_device_config), skip the
|
|
* parsing of sdvo device info
|
|
*/
|
|
if (p_defs->child_dev_size != sizeof(*p_child)) {
|
|
/* different child dev size . Ignore it */
|
|
DRM_DEBUG_KMS("different child size is found. Invalid.\n");
|
|
return;
|
|
}
|
|
/* get the block size of general definitions */
|
|
block_size = get_blocksize(p_defs);
|
|
/* get the number of child device */
|
|
child_device_num = (block_size - sizeof(*p_defs)) /
|
|
sizeof(*p_child);
|
|
count = 0;
|
|
/* get the number of child devices that are present */
|
|
for (i = 0; i < child_device_num; i++) {
|
|
p_child = &(p_defs->devices[i]);
|
|
if (!p_child->device_type) {
|
|
/* skip the device block if device type is invalid */
|
|
continue;
|
|
}
|
|
count++;
|
|
}
|
|
if (!count) {
|
|
DRM_DEBUG_KMS("no child dev is parsed from VBT\n");
|
|
return;
|
|
}
|
|
dev_priv->child_dev = kcalloc(count, sizeof(*p_child), GFP_KERNEL);
|
|
if (!dev_priv->child_dev) {
|
|
DRM_DEBUG_KMS("No memory space for child devices\n");
|
|
return;
|
|
}
|
|
|
|
dev_priv->child_dev_num = count;
|
|
count = 0;
|
|
for (i = 0; i < child_device_num; i++) {
|
|
p_child = &(p_defs->devices[i]);
|
|
if (!p_child->device_type) {
|
|
/* skip the device block if device type is invalid */
|
|
continue;
|
|
}
|
|
child_dev_ptr = dev_priv->child_dev + count;
|
|
count++;
|
|
memcpy((void *)child_dev_ptr, (void *)p_child,
|
|
sizeof(*p_child));
|
|
}
|
|
return;
|
|
}
|
|
|
|
|
|
/**
|
|
* psb_intel_init_bios - initialize VBIOS settings & find VBT
|
|
* @dev: DRM device
|
|
*
|
|
* Loads the Video BIOS and checks that the VBT exists. Sets scratch registers
|
|
* to appropriate values.
|
|
*
|
|
* VBT existence is a sanity check that is relied on by other i830_bios.c code.
|
|
* Note that it would be better to use a BIOS call to get the VBT, as BIOSes may
|
|
* feed an updated VBT back through that, compared to what we'll fetch using
|
|
* this method of groping around in the BIOS data.
|
|
*
|
|
* Returns 0 on success, nonzero on failure.
|
|
*/
|
|
int psb_intel_init_bios(struct drm_device *dev)
|
|
{
|
|
struct drm_psb_private *dev_priv = dev->dev_private;
|
|
struct pci_dev *pdev = dev->pdev;
|
|
struct vbt_header *vbt = NULL;
|
|
struct bdb_header *bdb = NULL;
|
|
u8 __iomem *bios = NULL;
|
|
size_t size;
|
|
int i;
|
|
|
|
|
|
dev_priv->panel_type = 0xff;
|
|
|
|
/* XXX Should this validation be moved to intel_opregion.c? */
|
|
if (dev_priv->opregion.vbt) {
|
|
struct vbt_header *vbt = dev_priv->opregion.vbt;
|
|
if (memcmp(vbt->signature, "$VBT", 4) == 0) {
|
|
DRM_DEBUG_KMS("Using VBT from OpRegion: %20s\n",
|
|
vbt->signature);
|
|
bdb = (struct bdb_header *)((char *)vbt + vbt->bdb_offset);
|
|
} else
|
|
dev_priv->opregion.vbt = NULL;
|
|
}
|
|
|
|
if (bdb == NULL) {
|
|
bios = pci_map_rom(pdev, &size);
|
|
if (!bios)
|
|
return -1;
|
|
|
|
/* Scour memory looking for the VBT signature */
|
|
for (i = 0; i + 4 < size; i++) {
|
|
if (!memcmp(bios + i, "$VBT", 4)) {
|
|
vbt = (struct vbt_header *)(bios + i);
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!vbt) {
|
|
dev_err(dev->dev, "VBT signature missing\n");
|
|
pci_unmap_rom(pdev, bios);
|
|
return -1;
|
|
}
|
|
bdb = (struct bdb_header *)(bios + i + vbt->bdb_offset);
|
|
}
|
|
|
|
/* Grab useful general dxefinitions */
|
|
parse_general_features(dev_priv, bdb);
|
|
parse_driver_features(dev_priv, bdb);
|
|
parse_lfp_panel_data(dev_priv, bdb);
|
|
parse_sdvo_panel_data(dev_priv, bdb);
|
|
parse_sdvo_device_mapping(dev_priv, bdb);
|
|
parse_device_mapping(dev_priv, bdb);
|
|
parse_backlight_data(dev_priv, bdb);
|
|
parse_edp(dev_priv, bdb);
|
|
|
|
if (bios)
|
|
pci_unmap_rom(pdev, bios);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Destroy and free VBT data
|
|
*/
|
|
void psb_intel_destroy_bios(struct drm_device *dev)
|
|
{
|
|
struct drm_psb_private *dev_priv = dev->dev_private;
|
|
|
|
kfree(dev_priv->sdvo_lvds_vbt_mode);
|
|
kfree(dev_priv->lfp_lvds_vbt_mode);
|
|
kfree(dev_priv->lvds_bl);
|
|
}
|