326 lines
6.7 KiB
C
326 lines
6.7 KiB
C
/*
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* arch/ubicom32/mach-ip7k/board-ip7160dpf.c
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* Platform initialization for ip7160dpf board.
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*
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* (C) Copyright 2009, Ubicom, Inc.
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*
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* This file is part of the Ubicom32 Linux Kernel Port.
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*
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* The Ubicom32 Linux Kernel Port is free software: you can redistribute
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* it and/or modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation, either version 2 of the
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* License, or (at your option) any later version.
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*
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* The Ubicom32 Linux Kernel Port is distributed in the hope that it
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* will be useful, but WITHOUT ANY WARRANTY; without even the implied
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* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
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* the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with the Ubicom32 Linux Kernel Port. If not,
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* see <http://www.gnu.org/licenses/>.
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*
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* Ubicom32 implementation derived from (with many thanks):
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* arch/m68knommu
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* arch/blackfin
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* arch/parisc
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*/
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#include <linux/device.h>
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#include <linux/platform_device.h>
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#include <linux/delay.h>
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#include <linux/gpio.h>
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#include <linux/i2c.h>
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#include <linux/i2c-gpio.h>
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#include <linux/input.h>
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#include <asm/board.h>
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#include <asm/machdep.h>
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#include <asm/ubicom32hid.h>
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#include <asm/vdc_tio.h>
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#include <asm/audio.h>
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/*
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* Backlight on the board PD0, hardware PWM
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*/
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static const struct ubicom32hid_button ip7160dpf_ubicom32hid_buttons[] = {
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{
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.type = EV_KEY,
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.code = KEY_UP,
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.bit = 0,
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},
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{
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.type = EV_KEY,
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.code = KEY_LEFT,
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.bit = 1,
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},
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{
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.type = EV_KEY,
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.code = KEY_RIGHT,
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.bit = 2,
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},
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{
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.type = EV_KEY,
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.code = KEY_DOWN,
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.bit = 3,
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},
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{
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.type = EV_KEY,
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.code = KEY_ENTER,
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.bit = 4,
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},
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{
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.type = EV_KEY,
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.code = KEY_MENU,
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.bit = 5,
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},
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{
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.type = EV_KEY,
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.code = KEY_ESC,
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.bit = 7,
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},
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};
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static const struct ubicom32hid_ir ip7160dpf_ubicom32hid_ircodes[] = {
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{
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.type = EV_KEY,
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.code = KEY_UP,
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.ir_code = 0xF807916E
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},
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{
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.type = EV_KEY,
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.code = KEY_DOWN,
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.ir_code = 0xF20D916E
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},
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{
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.type = EV_KEY,
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.code = KEY_LEFT,
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.ir_code = 0xF609916E
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},
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{
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.type = EV_KEY,
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.code = KEY_RIGHT,
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.ir_code = 0xF40B916E
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},
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{
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.type = EV_KEY,
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.code = KEY_ENTER,
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.ir_code = 0xF50A916E
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},
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{ /* rotate */
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.type = EV_KEY,
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.code = KEY_FN_F1,
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.ir_code = 0xF906916E
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},
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{
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.type = EV_KEY,
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.code = KEY_MENU,
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.ir_code = 0xF708916E
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},
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{ /* font size */
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.type = EV_KEY,
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.code = KEY_FN_F2,
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.ir_code = 0xF30C916E
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},
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{
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.type = EV_KEY,
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.code = KEY_ESC,
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.ir_code = 0xF10E916E
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},
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{
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.type = EV_KEY,
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.code = KEY_VOLUMEUP,
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.ir_code = 0xF00F916E
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},
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{
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.type = EV_KEY,
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.code = KEY_VOLUMEDOWN,
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.ir_code = 0xED12916E
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},
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{
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.type = EV_KEY,
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.code = KEY_MUTE,
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.ir_code = 0xEA15916E
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},
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{
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.type = EV_KEY,
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.code = KEY_INFO,
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.ir_code = 0xEF10916E
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},
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{ /* Like */
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.type = EV_KEY,
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.code = KEY_FN_F3,
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.ir_code = 0xEE11916E
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},
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{ /* Dislike */
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.type = EV_KEY,
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.code = KEY_FN_F4,
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.ir_code = 0xEB14916E
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},
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{
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.type = EV_KEY,
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.code = KEY_POWER,
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.ir_code = 0xFD02916E
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},
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};
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static struct ubicom32hid_platform_data ip7160dpf_ubicom32hid_platform_data = {
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.gpio_reset = GPIO_RI_5,
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.gpio_reset_polarity = 0,
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.type = UBICOM32HID_BL_TYPE_PWM,
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.invert = 0,
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.default_intensity = 128,
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.buttons = ip7160dpf_ubicom32hid_buttons,
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.nbuttons = ARRAY_SIZE(ip7160dpf_ubicom32hid_buttons),
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.ircodes = ip7160dpf_ubicom32hid_ircodes,
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.nircodes = ARRAY_SIZE(ip7160dpf_ubicom32hid_ircodes),
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};
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/*
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* Devices on the I2C bus
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* This board has a "bus 2" which is isolated from the main bus by U47
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* and pin RI0. It should be safe to always enable bus 2 by setting
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* RI0 to low, however, it should be noted that on all existing configurations
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* of this board, U49 and U51 are not populated.
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*/
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static struct i2c_board_info __initdata ip7160dpf_i2c_board_info[] = {
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/*
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* U37, CS4350 DAC, address 0x4B, bus 2
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* THIS ENTRY MUST BE FIRST
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*/
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{
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.type = "cs4350",
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.addr = 0x4B,
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}
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/*
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* U24, ubicom32hid
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*/
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{
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.type = "ubicom32hid",
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.addr = 0x08,
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.platform_data = &ip7160dpf_ubicom32hid_platform_data,
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},
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/*
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* U49, ISL29001 Ambient Light Sensor, address 0x44, bus 2 (may not be stuffed)
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*/
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/*
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* U51, S35390A RTC, address 0x30, bus 2 (may not be stuffed)
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*/
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#ifdef CONFIG_RTC_DRV_S35390A
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{
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.type = "s35390a",
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.addr = 0x30,
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},
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#endif
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};
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/*
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* I2C bus on the board, SDA PI1, SCL PI2
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*/
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static struct i2c_gpio_platform_data ip7160dpf_i2c_data = {
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.sda_pin = GPIO_RI_1,
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.scl_pin = GPIO_RI_2,
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.sda_is_open_drain = 0,
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.scl_is_open_drain = 0,
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.scl_is_output_only = 1,
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.udelay = 6,
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};
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static struct platform_device ip7160dpf_i2c_device = {
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.name = "i2c-gpio",
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.id = 0,
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.dev = {
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.platform_data = &ip7160dpf_i2c_data,
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},
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};
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/*
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* List of all devices in our system
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*/
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static struct platform_device *ip7160dpf_devices[] __initdata = {
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&ip7160dpf_i2c_device,
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};
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/*
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* ip7160dpf_power_off
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* Called to turn the power off for this board
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*/
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static void ip7160dpf_power_off(void)
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{
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gpio_set_value(GPIO_RF_14, 0);
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}
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/*
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* ip7160dpf_init
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* Called to add the devices which we have on this board
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*/
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static int __init ip7160dpf_init(void)
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{
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int ret;
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struct platform_device *audio_dev;
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ubi_gpio_init();
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/*
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* Hold the POWER_HOLD line
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*/
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ret = gpio_request(GPIO_RF_14, "POWER_HOLD");
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if (ret) {
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printk(KERN_ERR "%s: could not request POWER_HOLD GPIO\n", __FUNCTION__);
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}
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gpio_direction_output(GPIO_RF_14, 1);
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mach_power_off = ip7160dpf_power_off;
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/*
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* USB SEL_HOST_USB line
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*/
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ret = gpio_request(GPIO_RI_13, "SEL_HOST_USB");
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if (ret) {
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printk(KERN_ERR "%s: could not request SEL_HOST_USB GPIO\n", __FUNCTION__);
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}
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gpio_direction_output(GPIO_RI_13, 0);
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/*
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* USB/DAC nRESET line
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*/
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ret = gpio_request(GPIO_RI_3, "USB_DAC_nRESET");
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if (ret) {
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printk(KERN_ERR "%s: could not request USB_DAC_nRESET GPIO\n", __FUNCTION__);
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}
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gpio_direction_output(GPIO_RI_3, 0);
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udelay(1);
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gpio_direction_output(GPIO_RI_3, 1);
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/*
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* I2C BUS2 Disable line
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*/
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ret = gpio_request(GPIO_RI_0, "DISABLE_BUS2");
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if (ret) {
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printk(KERN_ERR "%s: could not request DISABLE_BUS2 GPIO\n", __FUNCTION__);
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}
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gpio_direction_output(GPIO_RI_0, 0);
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vdc_tio_init();
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printk(KERN_INFO "%s: registering device resources\n", __FUNCTION__);
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platform_add_devices(ip7160dpf_devices, ARRAY_SIZE(ip7160dpf_devices));
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/*
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* Allocate the audio driver if we can
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*/
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audio_dev = audio_device_alloc("snd-ubi32-cs4350", "audio-i2sout", 0);
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if (audio_dev) {
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ip7160dpf_i2c_board_info[0].platform_data = audio_dev;
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}
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printk(KERN_INFO "%s: registering i2c resources\n", __FUNCTION__);
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i2c_register_board_info(0, ip7160dpf_i2c_board_info, ARRAY_SIZE(ip7160dpf_i2c_board_info));
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return 0;
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}
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arch_initcall(ip7160dpf_init);
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