renesas/kmsxx.git - kmsxx, cloned from https://github.com/tomba/kmsxx

Age	Commit message (Expand)	Author
2016-06-11	gitignore: add pycache	Tomi Valkeinen
2016-03-08	add *.patch to gitignore	Tomi Valkeinen
2015-09-28	Initial version	Tomi Valkeinen

/* * Copyright © 2006 Intel Corporation * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice (including the next * paragraph) shall be included in all copies or substantial portions of the * Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. * * Authors: * Eric Anholt <eric@anholt.net> * */ #include "drmP.h" #include "drm.h" #include "i915_drm.h" #include "i915_drv.h" #include "intel_bios.h" #if 0 unsigned char * i830_bios_get_aim_data_block (ScrnInfoPtr pScrn, int aim, int data_block) { unsigned char *bios; int bdb_off; int vbt_off; int aim_off; struct vbt_header *vbt; struct aimdb_header *aimdb; struct aimdb_block *aimdb_block; bios = i830_bios_get (pScrn); if (!bios) return NULL; vbt_off = INTEL_BIOS_16(0x1a); vbt = (struct vbt_header *)(bios + vbt_off); aim_off = vbt->aim_offset[aim]; if (!aim_off) { free (bios); return NULL; } xf86DrvMsg(pScrn->scrnIndex, X_INFO, "aim_off %d\n", aim_off); aimdb = (struct aimdb_header *) (bios + vbt_off + aim_off); bdb_off = aimdb->aimdb_header_size; while (bdb_off < aimdb->aimdb_size) { aimdb_block = (struct aimdb_block *) (bios + vbt_off + aim_off + bdb_off); if (aimdb_block->aimdb_id == data_block) { unsigned char *aim = malloc (aimdb_block->aimdb_size + sizeof (struct aimdb_block)); if (!aim) { free (bios); return NULL; } memcpy (aim, aimdb_block, aimdb_block->aimdb_size + sizeof (struct aimdb_block)); free (bios); return aim; } bdb_off += aimdb_block->aimdb_size + sizeof (struct aimdb_block); } free (bios); return NULL; } #endif static void * find_section(struct bdb_header *bdb, int section_id) { u8 *base = (u8 *)bdb; int index = 0; u16 total, current_size; u8 current_id; /* skip to first section */ index += bdb->header_size; total = bdb->bdb_size; /* walk the sections looking for section_id */ while (index < total) { current_id = *(base + index); index++; current_size = *((u16 *)(base + index)); index += 2; if (current_id == section_id) return base + index; index += current_size; } return NULL; } /* Try to find panel data */ static void parse_panel_data(struct drm_i915_private *dev_priv, struct bdb_header *bdb) { struct bdb_lvds_options *lvds_options; struct bdb_lvds_lfp_data *lvds_lfp_data; struct bdb_lvds_lfp_data_entry *entry; struct lvds_dvo_timing *dvo_timing; struct drm_display_mode *panel_fixed_mode; /* Defaults if we can't find VBT info */ dev_priv->lvds_dither = 0; dev_priv->lvds_vbt = 0; lvds_options = find_section(bdb, BDB_LVDS_OPTIONS); if (!lvds_options) return; dev_priv->lvds_dither = lvds_options->pixel_dither; if (lvds_options->panel_type == 0xff) return; lvds_lfp_data = find_section(bdb, BDB_LVDS_LFP_DATA); if (!lvds_lfp_data) return; dev_priv->lvds_vbt = 1; entry = &lvds_lfp_data->data[lvds_options->panel_type]; dvo_timing = &entry->dvo_timing; panel_fixed_mode = drm_calloc(1, sizeof(*panel_fixed_mode), DRM_MEM_DRIVER); panel_fixed_mode->hdisplay = (dvo_timing->hactive_hi << 8) | dvo_timing->hactive_lo; panel_fixed_mode->hsync_start = panel_fixed_mode->hdisplay + ((dvo_timing->hsync_off_hi << 8) | dvo_timing->hsync_off_lo); panel_fixed_mode->hsync_end = panel_fixed_mode->hsync_start + dvo_timing->hsync_pulse_width; panel_fixed_mode->htotal = panel_fixed_mode->hdisplay + ((dvo_timing->hblank_hi << 8) | dvo_timing->hblank_lo); panel_fixed_mode->vdisplay = (dvo_timing->vactive_hi << 8) | dvo_timing->vactive_lo; panel_fixed_mode->vsync_start = panel_fixed_mode->vdisplay + dvo_timing->vsync_off; panel_fixed_mode->vsync_end = panel_fixed_mode->vsync_start + dvo_timing->vsync_pulse_width; panel_fixed_mode->vtotal = panel_fixed_mode->vdisplay + ((dvo_timing->vblank_hi << 8) | dvo_timing->vblank_lo); panel_fixed_mode->clock = dvo_timing->clock * 10; panel_fixed_mode->type = DRM_MODE_TYPE_PREFERRED; drm_mode_set_name(panel_fixed_mode); dev_priv->vbt_mode = panel_fixed_mode; DRM_DEBUG("Found panel mode in BIOS VBT tables:\n"); drm_mode_debug_printmodeline(panel_fixed_mode); return; } static void parse_general_features(struct drm_i915_private *dev_priv, struct bdb_header *bdb) { struct bdb_general_features *general; /* Set sensible defaults in case we can't find the general block */ dev_priv->int_tv_support = 1; dev_priv->int_crt_support = 1; general = find_section(bdb, BDB_GENERAL_FEATURES); if (general) { dev_priv->int_tv_support = general->int_tv_support; dev_priv->int_crt_support = general->int_crt_support; } } /** * 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. */ bool intel_init_bios(struct drm_device *dev) { struct drm_i915_private *dev_priv = dev->dev_private; struct pci_dev *pdev = dev->pdev; struct vbt_header *vbt = NULL; struct bdb_header *bdb; u8 __iomem *bios; size_t size; int i; 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) { DRM_ERROR("VBT signature missing\n"); pci_unmap_rom(pdev, bios); return -1; } bdb = (struct bdb_header *)(bios + i + vbt->bdb_offset); /* Grab useful general definitions */ parse_general_features(dev_priv, bdb);