Gabe Black (gabeblack@chromium.org) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/3753
-gerrit
commit d3138296a23bfcfc1dc95b5da9ba34a723efa968 Author: Gabe Black gabeblack@google.com Date: Sun Jun 30 05:56:26 2013 -0700
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 --- src/drivers/Kconfig | 1 + src/drivers/Makefile.inc | 1 + src/drivers/parade/Kconfig | 20 ++++ src/drivers/parade/Makefile.inc | 20 ++++ src/drivers/parade/ps8625/Kconfig | 24 +++++ src/drivers/parade/ps8625/Makefile.inc | 20 ++++ src/drivers/parade/ps8625/ps8625.c | 161 +++++++++++++++++++++++++++++++++ src/drivers/parade/ps8625/ps8625.h | 25 +++++ 8 files changed, 272 insertions(+)
diff --git a/src/drivers/Kconfig b/src/drivers/Kconfig index 386508a..c4378b1 100644 --- a/src/drivers/Kconfig +++ b/src/drivers/Kconfig @@ -27,6 +27,7 @@ source src/drivers/ics/Kconfig source src/drivers/ipmi/Kconfig source src/drivers/maxim/Kconfig source src/drivers/oxford/Kconfig +source src/drivers/parade/Kconfig if PC80_SYSTEM source src/drivers/pc80/Kconfig endif diff --git a/src/drivers/Makefile.inc b/src/drivers/Makefile.inc index f4fe146..9a1be72 100644 --- a/src/drivers/Makefile.inc +++ b/src/drivers/Makefile.inc @@ -24,6 +24,7 @@ subdirs-y += generic subdirs-y += i2c subdirs-y += maxim subdirs-y += oxford +subdirs-y += parade subdirs-y += realtek subdirs-y += sil subdirs-y += trident diff --git a/src/drivers/parade/Kconfig b/src/drivers/parade/Kconfig new file mode 100644 index 0000000..b4b2ac2 --- /dev/null +++ b/src/drivers/parade/Kconfig @@ -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 diff --git a/src/drivers/parade/Makefile.inc b/src/drivers/parade/Makefile.inc new file mode 100644 index 0000000..efbd11d --- /dev/null +++ b/src/drivers/parade/Makefile.inc @@ -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/ diff --git a/src/drivers/parade/ps8625/Kconfig b/src/drivers/parade/ps8625/Kconfig new file mode 100644 index 0000000..41aa92b --- /dev/null +++ b/src/drivers/parade/ps8625/Kconfig @@ -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 diff --git a/src/drivers/parade/ps8625/Makefile.inc b/src/drivers/parade/ps8625/Makefile.inc new file mode 100644 index 0000000..ef546ba --- /dev/null +++ b/src/drivers/parade/ps8625/Makefile.inc @@ -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 diff --git a/src/drivers/parade/ps8625/ps8625.c b/src/drivers/parade/ps8625/ps8625.c new file mode 100644 index 0000000..6cbe3b7 --- /dev/null +++ b/src/drivers/parade/ps8625/ps8625.c @@ -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 = ¶de_writes[i]; + i2c_write(bus, chip_base + w->offset, w->reg, sizeof(w->reg), + &w->val, sizeof(w->val)); + } +} diff --git a/src/drivers/parade/ps8625/ps8625.h b/src/drivers/parade/ps8625/ps8625.h new file mode 100644 index 0000000..2ef7577 --- /dev/null +++ b/src/drivers/parade/ps8625/ps8625.h @@ -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