| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2012 Google Inc. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; version 2 of the License. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| #include "i915_reg.h" |
| #include "drm_dp_helper.h" |
| |
| /* things that are, strangely, not defined anywhere? */ |
| #define PCH_PP_UNLOCK 0xabcd0000 |
| #define WMx_LP_SR_EN (1<<31) |
| |
| /* Google Link-specific defines */ |
| /* how many 4096-byte pages do we need for the framebuffer? |
| * There are 32 bits per pixel, or 4 bytes, |
| * which means 1024 pixels per page. |
| * HencetThere are 4250 GTTs on Link: |
| * 2650 (X) * 1700 (Y) pixels / 1024 pixels per page. |
| */ |
| #define FRAME_BUFFER_PAGES ((2560*1700)/1024) |
| #define FRAME_BUFFER_BYTES (FRAME_BUFFER_PAGES*4096) |
| |
| /* One-letter commands for code not meant to be ready for humans. |
| * The code was generated by a set of programs/scripts. |
| * M print out a kernel message |
| * R read a register. We do these mainly to ensure that if hardware wanted |
| * the register read, it was read; also, in debug, we can see what was expected |
| * and what was found. This has proven *very* useful to get this debugged. |
| * The udelay, if non-zero, will make sure there is a |
| * udelay() call with the value. |
| * The count is from the kernel and tells us how many times this read was done. |
| * Also useful for debugging and the state |
| * machine uses the info to drive a poll. |
| * W Write a register |
| * V set verbosity. It's a bit mask. |
| * 0 -> nothing |
| * 1 -> print kernel messages |
| * 2 -> print IO ops |
| * 4 -> print the number of times we spin on a register in a poll |
| * 8 -> restore whatever the previous verbosity level was |
| * (only one deep stack) |
| * |
| * Again, this is not really meant for human consumption. There is not a poll |
| * operator as such because, sometimes, there is a read/write/read where the |
| * second read is a poll, and this chipset is so touchy I'm reluctant to move |
| * things around and/or delete too many reads. |
| */ |
| #define M 1 |
| #define R 2 |
| #define W 4 |
| #define V 8 |
| #define I 16 |
| #define P 32 |
| |
| struct iodef { |
| unsigned char op; |
| unsigned int count; |
| const char *msg; |
| unsigned long addr; |
| unsigned long data; |
| unsigned long udelay; |
| }; |
| |
| /* i915.c */ |
| unsigned long io_i915_READ32(unsigned long addr); |
| void io_i915_WRITE32(unsigned long val, unsigned long addr); |
| |
| /* intel_dp.c */ |
| u32 pack_aux(u32 *src, int src_bytes); |
| void unpack_aux(u32 src, u32 *dst, int dst_bytes); |
| int intel_dp_aux_ch(u32 ch_ctl, u32 ch_data, u32 *send, int send_bytes, |
| u32 *recv, int recv_size); |
| |