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/*
* This file is part of the coreboot project.
*
* Copyright 2013 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.
*/
#include <stdint.h>
#include <console/console.h>
#include <delay.h>
#include <drivers/intel/gma/i915.h>
#include <arch/io.h>
#include "mainboard.h"
void runio(struct intel_dp *dp, int verbose);
void runio(struct intel_dp *dp, int verbose)
{
u8 read_val;
gtt_write(DDI_BUF_CTL_A,
DDI_BUF_IS_IDLE|DDI_A_4_LANES|DDI_PORT_WIDTH_X1|DDI_INIT_DISPLAY_DETECTED
|0x00000091);
intel_prepare_ddi();
gtt_write(BLC_PWM_CPU_CTL,0x03a903a9);
gtt_write(BLC_PWM_PCH_CTL2,0x03a903a9);
gtt_write(BLC_PWM_PCH_CTL1,0x80000000);
gtt_write(DEIIR,0x00008000);
intel_dp_wait_reg(DEIIR, 0x00000000);
gtt_write(DSPSTRIDE(dp->plane), dp->stride);
gtt_write(DSPADDR(dp->plane), 0x00000000);
printk(BIOS_SPEW, "DP_SET_POWER");
intel_dp_sink_dpms(dp, 0);
intel_dp_set_m_n_regs(dp);
intel_dp_get_max_downspread(dp, &read_val);
intel_dp_set_resolution(dp);
gtt_write(PIPESRC(dp->pipe),dp->pipesrc);
gtt_write(PIPECONF(dp->transcoder),0x00000000);
gtt_write(PCH_TRANSCONF(dp->pipe),0x00000000);
mainboard_set_port_clk_dp(dp);
gtt_write(DSPSTRIDE(dp->plane),dp->stride);
gtt_write(DSPCNTR(dp->plane),DISPLAY_PLANE_ENABLE|DISPPLANE_BGRX888);
gtt_write(DEIIR,0x00000080);
intel_dp_wait_reg(DEIIR, 0x00000000);
/* There is some reason we removed these three calls from
* slippy/gma.c -- I dont remember why!! */
gtt_write(PF_WIN_POS(dp->pipe),dp->pfa_pos);
gtt_write(PF_CTL(dp->pipe),dp->pfa_ctl);
gtt_write(PF_WIN_SZ(dp->pipe),dp->pfa_sz);
gtt_write(TRANS_DDI_FUNC_CTL_EDP,dp->flags);
gtt_write(PIPECONF(dp->transcoder),PIPECONF_ENABLE|PIPECONF_DITHER_EN);
/* what is this doing? Not sure yet. But we don't seem to be
* able to live without it.*/
intel_dp_i2c_write(dp, 0x0);
intel_dp_i2c_read(dp, &read_val);
intel_dp_i2c_write(dp, 0x04);
intel_dp_i2c_read(dp, &read_val);
intel_dp_i2c_write(dp, 0x7e);
intel_dp_i2c_read(dp, &read_val);
gtt_write(DDI_BUF_CTL_A,
DDI_BUF_IS_IDLE|
DDI_A_4_LANES|DDI_PORT_WIDTH_X1|DDI_INIT_DISPLAY_DETECTED
|0x00000091);
gtt_write(TRANS_DDI_FUNC_CTL_EDP+0x10,0x00000001);
gtt_write(DP_TP_CTL(dp->port),DP_TP_CTL_ENABLE |
DP_TP_CTL_ENHANCED_FRAME_ENABLE);
gtt_write(DDI_BUF_CTL_A,
DDI_BUF_CTL_ENABLE|
/* another undocumented setting. Surprised? */ 0x40000 |
DDI_BUF_IS_IDLE|DDI_A_4_LANES|
DDI_PORT_WIDTH_X1|DDI_INIT_DISPLAY_DETECTED|
0x80040091);
intel_dp_set_bw(dp);
intel_dp_set_lane_count(dp);
mainboard_train_link(dp);
gtt_write(DP_TP_CTL(dp->port),
DP_TP_CTL_ENABLE | DP_TP_CTL_ENHANCED_FRAME_ENABLE |
DP_TP_CTL_LINK_TRAIN_IDLE);
gtt_write(DP_TP_CTL(dp->port),
DP_TP_CTL_ENABLE | DP_TP_CTL_ENHANCED_FRAME_ENABLE |
DP_TP_CTL_LINK_TRAIN_NORMAL);
gtt_write(BLC_PWM_CPU_CTL,0x03a903a9);
gtt_write(BLC_PWM_PCH_CTL2,0x03a903a9);
gtt_write(BLC_PWM_PCH_CTL1,0x80000000);
/* some of this is not needed. But with a total lack of docs, well ...*/
gtt_write(DIGITAL_PORT_HOTPLUG_CNTRL, DIGITAL_PORTA_HOTPLUG_ENABLE );
gtt_write(SDEIIR,0x00000000);
gtt_write(DEIIR,0x00000000);
gtt_write(DEIIR,0x00008000);
intel_dp_wait_reg(DEIIR, 0x00000000);
gtt_write(DSPSTRIDE(dp->plane),dp->stride);
gtt_write(PIPESRC(dp->pipe),dp->pipesrc);
gtt_write(DEIIR,0x00000080);
intel_dp_wait_reg(DEIIR, 0x00000000);
gtt_write(DSPSTRIDE(dp->plane),dp->stride);
gtt_write(DSPCNTR(dp->plane),DISPLAY_PLANE_ENABLE | DISPPLANE_BGRX888);
gtt_write(PCH_PP_CONTROL,EDP_BLC_ENABLE | EDP_BLC_ENABLE | PANEL_POWER_ON);
gtt_write(SDEIIR,0x00000000);
gtt_write(SDEIIR,0x00000000);
gtt_write(DEIIR,0x00000000);
}
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