531b87ac4e
Change-Id: If3cdfdff60c92e3427f1b285e2bca92e2bb2a1cb Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr> Reviewed-on: https://review.coreboot.org/16640 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi <pgeorgi@google.com>
82 lines
2.8 KiB
C
82 lines
2.8 KiB
C
/*
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* This file is part of the coreboot project.
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*
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* Copyright (C) 2012 Google Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <drivers/intel/gma/i915_reg.h>
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#include <drivers/intel/gma/drm_dp_helper.h>
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/* things that are, strangely, not defined anywhere? */
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#define PCH_PP_UNLOCK 0xabcd0000
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#define WMx_LP_SR_EN (1 << 31)
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/* Google Link-specific defines */
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/* how many 4096-byte pages do we need for the framebuffer?
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* There are 32 bits per pixel, or 4 bytes,
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* which means 1024 pixels per page.
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* HencetThere are 4250 GTTs on Link:
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* 2650 (X) * 1700 (Y) pixels / 1024 pixels per page.
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*/
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#define FRAME_BUFFER_PAGES ((2560*1700)/1024)
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#define FRAME_BUFFER_BYTES (FRAME_BUFFER_PAGES*4096)
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/* One-letter commands for code not meant to be ready for humans.
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* The code was generated by a set of programs/scripts.
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* M print out a kernel message
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* R read a register. We do these mainly to ensure that if hardware wanted
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* the register read, it was read; also, in debug, we can see what was expected
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* and what was found. This has proven *very* useful to get this debugged.
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* The udelay, if non-zero, will make sure there is a
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* udelay() call with the value.
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* The count is from the kernel and tells us how many times this read was done.
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* Also useful for debugging and the state
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* machine uses the info to drive a poll.
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* W Write a register
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* V set verbosity. It's a bit mask.
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* 0 -> nothing
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* 1 -> print kernel messages
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* 2 -> print IO ops
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* 4 -> print the number of times we spin on a register in a poll
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* 8 -> restore whatever the previous verbosity level was
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* (only one deep stack)
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*
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* Again, this is not really meant for human consumption. There is not a poll
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* operator as such because, sometimes, there is a read/write/read where the
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* second read is a poll, and this chipset is so touchy I'm reluctant to move
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* things around and/or delete too many reads.
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*/
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#define M 1
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#define R 2
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#define W 4
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#define V 8
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#define I 16
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#define P 32
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struct iodef {
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unsigned char op;
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unsigned int count;
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const char *msg;
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unsigned long addr;
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unsigned long data;
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unsigned long udelay;
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};
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/* i915.c */
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unsigned long io_i915_READ32(unsigned long addr);
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void io_i915_WRITE32(unsigned long val, unsigned long addr);
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/* intel_dp.c */
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u32 pack_aux(u32 *src, int src_bytes);
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void unpack_aux(u32 src, u32 *dst, int dst_bytes);
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int intel_dp_aux_ch(u32 ch_ctl, u32 ch_data, u32 *send, int send_bytes,
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u32 *recv, int recv_size);
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