i915: add basic VBT support

Map the VBIOS (and therefore VBT) at init time for use by various output
initialization routines.

1 files changed, 187 insertions, 0 deletions

diff --git a/linux-core/intel_bios.h b/linux-core/intel_bios.h
new file mode 100644
index 00000000..b17856de
--- /dev/null
+++ b/linux-core/intel_bios.h
@@ -0,0 +1,187 @@
+/*
+ * 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>
+ *
+ */
+
+#ifndef _I830_BIOS_H_
+#define _I830_BIOS_H_
+
+#include "drmP.h"
+
+struct vbt_header {
+	u8 signature[20];		/**< Always starts with 'VBT$' */
+	u16 version;			/**< decimal */
+	u16 header_size;		/**< in bytes */
+	u16 vbt_size;			/**< in bytes */
+	u8 vbt_checksum;
+	u8 reserved0;
+	u32 bdb_offset;			/**< from beginning of VBT */
+	u32 aim_offset[4];		/**< from beginning of VBT */
+} __attribute__((packed));
+
+struct bdb_header {
+	u8 signature[16];		/**< Always 'BIOS_DATA_BLOCK' */
+	u16 version;			/**< decimal */
+	u16 header_size;		/**< in bytes */
+	u16 bdb_size;			/**< in bytes */
+	u8 type; /* 0 == desktop, 1 == mobile */
+	u8 relstage;
+	u8 chipset;
+	u8 lvds_present:1;
+	u8 tv_present:1;
+	u8 rsvd2:6; /* finish byte */
+	u8 rsvd3[4];
+	u8 signon[155];
+	u8 copyright[61];
+	u16 code_segment;
+	u8 dos_boot_mode;
+	u8 bandwidth_percent;
+	u8 rsvd4;
+	u8 resize_pci_bios;
+	u8 rsvd5;
+	u8 rsvd6[3];
+	u8 panel_fitting:2;
+	u8 flexaim:1;
+	u8 msg_enable:1;
+	u8 clear_screen:1;
+	u8 color_flip:1;
+	u8 rsvd7:2; /* finish byte */
+	u8 download_ext_vbt:1;
+	u8 enable_ssc:1;
+	u8 ssc_freq:1;
+	u8 enable_lfp_on_override:1;
+	u8 disable_ssc_ddt:1;
+	u8 rsvd8:3; /* finish byte */
+	u8 disable_smooth_vision:1;
+	u8 single_dvi:1;
+	u8 rsvd9:6; /* finish byte */
+	u8 legacy_monitor_detect:1;
+	u8 rsvd10:7; /* finish byte */
+	u8 int_crt_support:1;
+	u8 int_tv_support:1;
+	u8 rsvd11:6; /* finish byte */
+} __attribute__((packed));
+
+#define LVDS_CAP_EDID			(1 << 6)
+#define LVDS_CAP_DITHER			(1 << 5)
+#define LVDS_CAP_PFIT_AUTO_RATIO	(1 << 4)
+#define LVDS_CAP_PFIT_GRAPHICS_MODE	(1 << 3)
+#define LVDS_CAP_PFIT_TEXT_MODE		(1 << 2)
+#define LVDS_CAP_PFIT_GRAPHICS		(1 << 1)
+#define LVDS_CAP_PFIT_TEXT		(1 << 0)
+struct lvds_bdb_1 {
+	u8 id;				/**< 40 */
+	u16 size;
+	u8 panel_type;
+	u8 reserved0;
+	u16 caps;
+} __attribute__((packed));
+
+struct lvds_bdb_2_fp_params {
+	u16 x_res;
+	u16 y_res;
+	u32 lvds_reg;
+	u32 lvds_reg_val;
+	u32 pp_on_reg;
+	u32 pp_on_reg_val;
+	u32 pp_off_reg;
+	u32 pp_off_reg_val;
+	u32 pp_cycle_reg;
+	u32 pp_cycle_reg_val;
+	u32 pfit_reg;
+	u32 pfit_reg_val;
+	u16 terminator;
+} __attribute__((packed));
+
+struct lvds_bdb_2_fp_edid_dtd {
+	u16 dclk;		/**< In 10khz */
+	u8 hactive;
+	u8 hblank;
+	u8 high_h;		/**< 7:4 = hactive 11:8, 3:0 = hblank 11:8 */
+	u8 vactive;
+	u8 vblank;
+	u8 high_v;		/**< 7:4 = vactive 11:8, 3:0 = vblank 11:8 */
+	u8 hsync_off;
+	u8 hsync_pulse_width;
+	u8 vsync_off;
+	u8 high_hsync_off;	/**< 7:6 = hsync off 9:8 */
+	u8 h_image;
+	u8 v_image;
+	u8 max_hv;
+	u8 h_border;
+	u8 v_border;
+	u8 flags;
+#define FP_EDID_FLAG_VSYNC_POSITIVE	(1 << 2)
+#define FP_EDID_FLAG_HSYNC_POSITIVE	(1 << 1)
+} __attribute__((packed));
+
+struct lvds_bdb_2_entry {
+	u16 fp_params_offset;		/**< From beginning of BDB */
+	u8 fp_params_size;
+	u16 fp_edid_dtd_offset;
+	u8 fp_edid_dtd_size;
+	u16 fp_edid_pid_offset;
+	u8 fp_edid_pid_size;
+} __attribute__((packed));
+
+struct lvds_bdb_2 {
+	u8 id;			/**< 41 */
+	u16 size;
+	u8 table_size;	/* not sure on this one */
+	struct lvds_bdb_2_entry panels[16];
+} __attribute__((packed));
+
+struct aimdb_header {
+	char signature[16];
+	char oem_device[20];
+	u16 aimdb_version;
+	u16 aimdb_header_size;
+	u16 aimdb_size;
+} __attribute__((packed));
+
+struct aimdb_block {
+	u8 aimdb_id;
+	u16 aimdb_size;
+} __attribute__((packed));
+
+struct vch_panel_data {
+	u16 fp_timing_offset;
+	u8 fp_timing_size;
+	u16 dvo_timing_offset;
+	u8 dvo_timing_size;
+	u16 text_fitting_offset;
+	u8 text_fitting_size;
+	u16 graphics_fitting_offset;
+	u8 graphics_fitting_size;
+} __attribute__((packed));
+
+struct vch_bdb_22 {
+	struct aimdb_block aimdb_block;
+	struct vch_panel_data panels[16];
+} __attribute__((packed));
+
+bool intel_find_bios(struct drm_device *dev);
+
+#endif /* _I830_BIOS_H_ */