Ronald G. Minnich | 2120e0e2 | 2013-10-09 15:53:43 -0700 | [diff] [blame] | 1 | /* |
| 2 | * This file is part of the coreboot project. |
| 3 | * |
| 4 | * Copyright 2013 Google Inc. |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; version 2 of the License. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program; if not, write to the Free Software |
| 17 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 18 | */ |
| 19 | |
| 20 | /* This code was originally generated using an i915tool program. It has been |
| 21 | * improved by hand. |
| 22 | */ |
| 23 | |
| 24 | #include <stdint.h> |
| 25 | #include <console/console.h> |
| 26 | #include <delay.h> |
| 27 | #include <drivers/intel/gma/i915.h> |
| 28 | #include <arch/io.h> |
| 29 | #include "mainboard.h" |
| 30 | |
Ronald G. Minnich | 2120e0e2 | 2013-10-09 15:53:43 -0700 | [diff] [blame] | 31 | /* this function will either be renamed or subsumed into ./gma.c:i915_lightup */ |
| 32 | void runio(struct intel_dp *dp); |
| 33 | |
| 34 | void runio(struct intel_dp *dp) |
| 35 | { |
| 36 | u8 read_val; |
| 37 | |
| 38 | intel_dp_wait_panel_power_control(0xabcd0008); |
| 39 | |
| 40 | /* vbios spins at this point. Some haswell weirdness? */ |
| 41 | intel_dp_wait_panel_power_control(0xabcd0008); |
| 42 | |
| 43 | /* This should be a function like intel_panel_enable_backlight |
| 44 | However, we are not sure how the value 0x3a9 comes up. |
| 45 | It has to do something with PWM frequency */ |
| 46 | gtt_write(BLC_PWM_CPU_CTL,0x03a903a9); |
| 47 | gtt_write(BLC_PWM_PCH_CTL2,0x03a903a9); |
| 48 | gtt_write(BLC_PWM_PCH_CTL1,BLM_PCH_PWM_ENABLE); |
| 49 | |
| 50 | gtt_write(DEIIR,0x00008000); |
| 51 | intel_dp_wait_reg(DEIIR, 0x00000000); |
| 52 | |
| 53 | gtt_write(DSPSTRIDE(dp->plane),dp->stride); |
| 54 | |
| 55 | intel_dp_sink_dpms(dp, 0); |
| 56 | |
| 57 | intel_dp_get_max_downspread(dp, &read_val); |
| 58 | |
| 59 | intel_dp_set_m_n_regs(dp); |
| 60 | |
| 61 | intel_dp_set_resolution(dp); |
| 62 | |
| 63 | gtt_write(PIPESRC(dp->pipe),dp->pipesrc); |
| 64 | gtt_write(PIPECONF(dp->transcoder),0x00000000); |
| 65 | gtt_write(PCH_TRANSCONF(dp->pipe),0x00000000); |
| 66 | |
| 67 | mainboard_set_port_clk_dp(dp); |
| 68 | gtt_write(DSPSTRIDE(dp->plane),dp->stride); |
Ronald G. Minnich | 3a75e5e | 2013-10-28 15:01:54 -0700 | [diff] [blame^] | 69 | gtt_write(DSPCNTR(dp->plane),DISPLAY_PLANE_ENABLE|DISPPLANE_BGRX888); |
Ronald G. Minnich | 2120e0e2 | 2013-10-09 15:53:43 -0700 | [diff] [blame] | 70 | gtt_write(DEIIR,0x00000080); |
| 71 | |
| 72 | gtt_write(TRANS_DDI_FUNC_CTL_EDP,dp->flags); |
| 73 | gtt_write(PIPECONF(dp->transcoder),PIPECONF_ENABLE|PIPECONF_DITHER_EN); |
| 74 | |
| 75 | intel_dp_wait_panel_power_control(0xabcd000a); |
| 76 | |
| 77 | /* what is this doing? Not sure yet. */ |
| 78 | intel_dp_i2c_write(dp, 0x0); |
| 79 | intel_dp_i2c_read(dp, &read_val); |
| 80 | intel_dp_i2c_write(dp, 0x04); |
| 81 | intel_dp_i2c_read(dp, &read_val); |
| 82 | intel_dp_i2c_write(dp, 0x7e); |
| 83 | intel_dp_i2c_read(dp, &read_val); |
| 84 | |
| 85 | /* this needs to be a call to a function */ |
| 86 | gtt_write(DP_A, DP_LINK_TRAIN_PAT_1 | DP_LINK_TRAIN_PAT_1_CPT | DP_VOLTAGE_0_4 | DP_PRE_EMPHASIS_0 | DP_PORT_WIDTH_1 | DP_PLL_FREQ_270MHZ | DP_SCRAMBLING_DISABLE_IRONLAKE | DP_SYNC_VS_HIGH |0x00000091); |
| 87 | gtt_write(DP_TP_CTL(dp->port),DP_TP_CTL_ENABLE | DP_TP_CTL_ENHANCED_FRAME_ENABLE); |
| 88 | gtt_write(DP_A, DP_PORT_EN | DP_LINK_TRAIN_PAT_1 | DP_LINK_TRAIN_PAT_1_CPT | DP_VOLTAGE_0_4 | DP_PRE_EMPHASIS_0 | DP_PORT_WIDTH_1 | DP_ENHANCED_FRAMING | DP_PLL_FREQ_270MHZ | DP_SCRAMBLING_DISABLE_IRONLAKE | DP_SYNC_VS_HIGH |0x80040091); |
| 89 | |
| 90 | /* we may need to move these *after* power well power up and *before* PCH_PP_CONTROL in gma.c */ |
| 91 | gtt_write(PCH_PP_ON_DELAYS, PANEL_PORT_SELECT_LVDS |(/* PANEL_POWER_UP_DELAY_MASK */0x1<<16)|(/* PANEL_LIGHT_ON_DELAY_MASK */0xa<<0)|0x0001000a); |
| 92 | gtt_write(PCH_PP_ON_DELAYS, PANEL_PORT_SELECT_LVDS |(/* PANEL_POWER_UP_DELAY_MASK */0x7d0<<16)|(/* PANEL_LIGHT_ON_DELAY_MASK */0xa<<0)|0x07d0000a); |
| 93 | |
| 94 | intel_dp_set_bw(dp); |
| 95 | intel_dp_set_lane_count(dp); |
| 96 | |
| 97 | mainboard_train_link(dp); |
| 98 | |
| 99 | /* need a function: intel_ddi_set_tp or similar */ |
| 100 | gtt_write(DP_TP_CTL(dp->port),DP_TP_CTL_ENABLE | DP_TP_CTL_ENHANCED_FRAME_ENABLE | DP_TP_CTL_LINK_TRAIN_IDLE); |
| 101 | gtt_write(DP_TP_CTL(dp->port),DP_TP_CTL_ENABLE | DP_TP_CTL_ENHANCED_FRAME_ENABLE | DP_TP_CTL_LINK_TRAIN_NORMAL); |
| 102 | |
| 103 | gtt_write(BLC_PWM_CPU_CTL,0x03a903a9); |
| 104 | gtt_write(BLC_PWM_PCH_CTL2,0x03a903a9); |
| 105 | gtt_write(BLC_PWM_PCH_CTL1,0x80000000); |
| 106 | |
| 107 | /* some of this is not needed. */ |
| 108 | gtt_write(DIGITAL_PORT_HOTPLUG_CNTRL, DIGITAL_PORTA_HOTPLUG_ENABLE ); |
| 109 | |
| 110 | gtt_write(SDEIIR,0x00000000); |
| 111 | gtt_write(DEIIR,0x00000000); |
| 112 | gtt_write(DEIIR,0x00008000); |
| 113 | intel_dp_wait_reg(DEIIR, 0x00000000); |
| 114 | |
| 115 | gtt_write(DSPSTRIDE(dp->plane),dp->stride); |
| 116 | gtt_write(PIPESRC(dp->pipe),dp->pipesrc); |
| 117 | |
| 118 | gtt_write(DEIIR,0x00000080); |
| 119 | intel_dp_wait_reg(DEIIR, 0x00000000); |
| 120 | |
| 121 | gtt_write(DSPSTRIDE(dp->plane),dp->stride); |
Ronald G. Minnich | 3a75e5e | 2013-10-28 15:01:54 -0700 | [diff] [blame^] | 122 | gtt_write(DSPCNTR(dp->plane),DISPLAY_PLANE_ENABLE | DISPPLANE_BGRX888); |
Ronald G. Minnich | 2120e0e2 | 2013-10-09 15:53:43 -0700 | [diff] [blame] | 123 | |
| 124 | gtt_write(PCH_PP_CONTROL,EDP_BLC_ENABLE | PANEL_POWER_RESET | PANEL_POWER_ON); |
| 125 | |
| 126 | gtt_write(SDEIIR,0x00000000); |
| 127 | gtt_write(SDEIIR,0x00000000); |
| 128 | gtt_write(DEIIR,0x00000000); |
| 129 | } |