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parade: Add a driver for the parade ps8625. 

This driver is basically the same as the one in U-Boot but without the device
tree stuff. That driver is, in turn, a straightforward implementation of the
sequence of register writes described in the data sheet. Comments were added
in U-Boot which helpfully describe what the register writes are actually
doing and are kept.

Change-Id: I64ba6b373478853bb2120f0553a43de901170d02
Signed-off-by: Gabe Black <gabeblack@google.com>
Reviewed-on: http://review.coreboot.org/3753
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
This commit is contained in:
Gabe Black 2013-06-30 05:56:26 -07:00 committed by Stefan Reinauer
parent a5dc091129
commit 2ddc9ea0c8
8 changed files with 272 additions and 0 deletions
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1
src/drivers/Kconfig
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@ -27,6 +27,7 @@ source src/drivers/ics/Kconfig
source src/drivers/ipmi/Kconfig source src/drivers/ipmi/Kconfig
source src/drivers/maxim/Kconfig source src/drivers/maxim/Kconfig
source src/drivers/oxford/Kconfig source src/drivers/oxford/Kconfig
source src/drivers/parade/Kconfig
if PC80_SYSTEM if PC80_SYSTEM
source src/drivers/pc80/Kconfig source src/drivers/pc80/Kconfig
endif endif

1
src/drivers/Makefile.inc
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@ -24,6 +24,7 @@ subdirs-y += generic
subdirs-y += i2c subdirs-y += i2c
subdirs-y += maxim subdirs-y += maxim
subdirs-y += oxford subdirs-y += oxford
subdirs-y += parade
subdirs-y += realtek subdirs-y += realtek
subdirs-y += sil subdirs-y += sil
subdirs-y += trident subdirs-y += trident

20
src/drivers/parade/Kconfig Normal file
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@ -0,0 +1,20 @@
##
## This file is part of the coreboot project.
##
## Copyright (C) 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
##
source src/drivers/parade/ps8625/Kconfig

20
src/drivers/parade/Makefile.inc Normal file
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@ -0,0 +1,20 @@
##
## This file is part of the coreboot project.
##
## Copyright (C) 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
##
subdirs-$(CONFIG_DRIVER_PARADE_PS8625) += ps8625/

24
src/drivers/parade/ps8625/Kconfig Normal file
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@ -0,0 +1,24 @@
##
## This file is part of the coreboot project.
##
## Copyright (C) 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
##
config DRIVER_PARADE_PS8625
bool
default n
help
Parade ps8625 display port to lvds bridge

20
src/drivers/parade/ps8625/Makefile.inc Normal file
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@ -0,0 +1,20 @@
##
## This file is part of the coreboot project.
##
## Copyright (C) 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
##
ramstage-$(CONFIG_DRIVER_PARADE_PS8625) += ps8625.c

161
src/drivers/parade/ps8625/ps8625.c Normal file
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@ -0,0 +1,161 @@
/*
* 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 "ps8625.h"
#include <device/i2c.h>
#include <stdint.h>
#include <stdlib.h>
struct parade_write {
uint8_t offset;
uint8_t reg;
uint8_t val;
};
static const struct parade_write parade_writes[] = {
{ 0x02, 0xa1, 0x01 }, /* HPD low */
/*
* SW setting
* [1:0] SW output 1.2V voltage is lower to 96%
*/
{ 0x04, 0x14, 0x01 },
/*
* RCO SS setting
* [5:4] = b01 0.5%, b10 1%, b11 1.5%
*/
{ 0x04, 0xe3, 0x20 },
{ 0x04, 0xe2, 0x80 }, /* [7] RCO SS enable */
/*
* RPHY Setting
* [3:2] CDR tune wait cycle before
* measure for fine tune b00: 1us,
* 01: 0.5us, 10:2us, 11:4us.
*/
{ 0x04, 0x8a, 0x0c },
{ 0x04, 0x89, 0x08 }, /* [3] RFD always on */
/*
* CTN lock in/out:
* 20000ppm/80000ppm. Lock out 2
* times.
*/
{ 0x04, 0x71, 0x2d },
/*
* 2.7G CDR settings
* NOF=40LSB for HBR CDR setting
*/
{ 0x04, 0x7d, 0x07 },
{ 0x04, 0x7b, 0x00 }, /* [1:0] Fmin=+4bands */
{ 0x04, 0x7a, 0xfd }, /* [7:5] DCO_FTRNG=+-40% */
/*
* 1.62G CDR settings
* [5:2]NOF=64LSB [1:0]DCO scale is 2/5
*/
{ 0x04, 0xc0, 0x12 },
{ 0x04, 0xc1, 0x92 }, /* Gitune=-37% */
{ 0x04, 0xc2, 0x1c }, /* Fbstep=100% */
{ 0x04, 0x32, 0x80 }, /* [7] LOS signal disable */
/*
* RPIO Setting
* [7:4] LVDS driver bias current :
* 75% (250mV swing)
*/
{ 0x04, 0x00, 0xb0 },
/*
* [7:6] Right-bar GPIO output strength is 8mA
*/
{ 0x04, 0x15, 0x40 },
/* EQ Training State Machine Setting */
{ 0x04, 0x54, 0x10 }, /* RCO calibration start */
/* [4:0] MAX_LANE_COUNT set to one lane */
{ 0x01, 0x02, 0x81 },
/* [4:0] LANE_COUNT_SET set to one lane */
{ 0x01, 0x21, 0x81 },
{ 0x00, 0x52, 0x20 },
{ 0x00, 0xf1, 0x03 }, /* HPD CP toggle enable */
{ 0x00, 0x62, 0x41 },
/* Counter number, add 1ms counter delay */
{ 0x00, 0xf6, 0x01 },
/*
* [6]PWM function control by
* DPCD0040f[7], default is PWM
* block always works.
*/
{ 0x00, 0x77, 0x06 },
/*
* 04h Adjust VTotal tolerance to
* fix the 30Hz no display issue
*/
{ 0x00, 0x4c, 0x04 },
/* DPCD00400='h00, Parade OUI = 'h001cf8 */
{ 0x01, 0xc0, 0x00 },
{ 0x01, 0xc1, 0x1c }, /* DPCD00401='h1c */
{ 0x01, 0xc2, 0xf8 }, /* DPCD00402='hf8 */
/*
* DPCD403~408 = ASCII code
* D2SLV5='h4432534c5635
*/
{ 0x01, 0xc3, 0x44 },
{ 0x01, 0xc4, 0x32 }, /* DPCD404 */
{ 0x01, 0xc5, 0x53 }, /* DPCD405 */
{ 0x01, 0xc6, 0x4c }, /* DPCD406 */
{ 0x01, 0xc7, 0x56 }, /* DPCD407 */
{ 0x01, 0xc8, 0x35 }, /* DPCD408 */
/*
* DPCD40A, Initial Code major revision
* '01'
*/
{ 0x01, 0xca, 0x01 },
/* DPCD40B, Initial Code minor revision '05' */
{ 0x01, 0xcb, 0x05 },
/* DPCD720, Select internal PWM */
{ 0x01, 0xa5, 0xa0 },
/*
* FFh for 100% PWM of brightness, 0h for 0%
* brightness
*/
{ 0x01, 0xa7, 0xff },
/*
* Set LVDS output as 6bit-VESA mapping,
* single LVDS channel
*/
{ 0x01, 0xcc, 0x13 },
/* Enable SSC set by register */
{ 0x02, 0xb1, 0x20 },
/*
* Set SSC enabled and +/-1% central
* spreading
*/
{ 0x04, 0x10, 0x16 },
/* MPU Clock source: LC => RCO */
{ 0x04, 0x59, 0x60 },
{ 0x04, 0x54, 0x14 }, /* LC -> RCO */
{ 0x02, 0xa1, 0x91 } /* HPD high */
};
void parade_ps8625_bridge_setup(unsigned bus, unsigned chip_base)
{
int i;
for (i = 0; i < ARRAY_SIZE(parade_writes); i++) {
const struct parade_write *w = &parade_writes[i];
i2c_write(bus, chip_base + w->offset, w->reg, sizeof(w->reg),
&w->val, sizeof(w->val));
}
}

25
src/drivers/parade/ps8625/ps8625.h Normal file
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@ -0,0 +1,25 @@
/*
* 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
*/
#ifndef __PS8625_H__
#define __PS8625_H__
void parade_ps8625_bridge_setup(unsigned bus, unsigned chip_base);
#endif