diff options
Diffstat (limited to 'src/mainboard/google/peppy/i915io.c')
| -rw-r--r-- | src/mainboard/google/peppy/i915io.c | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/src/mainboard/google/peppy/i915io.c b/src/mainboard/google/peppy/i915io.c new file mode 100644 index 0000000000..693aed5185 --- /dev/null +++ b/src/mainboard/google/peppy/i915io.c @@ -0,0 +1,144 @@ +/* +* 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. +* +* 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 <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_RGBX888); + + 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_RGBX888); + + 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); + +} + |