1/*
  2 * Copyright (C) 2009
  3 * Guennadi Liakhovetski, DENX Software Engineering, <lg@denx.de>
  4 *
  5 * This program is free software; you can redistribute it and/or modify
  6 * it under the terms of the GNU General Public License version 2 as
  7 * published by the Free Software Foundation.
  8 */
  9#include <linux/gpio.h>
 10#include <linux/input.h>
 11#include <linux/platform_device.h>
 12#include <linux/spi/spi.h>
 13
 14#include <asm/mach-types.h>
 15
 16#include "pcm037.h"
 17#include "common.h"
 18#include "devices-imx31.h"
 19#include "iomux-mx3.h"
 20
 21static unsigned int pcm037_eet_pins[] = {
 22	/* Reserve and hardwire GPIO 57 high - S6E63D6 chipselect */
 23	IOMUX_MODE(MX31_PIN_KEY_COL7, IOMUX_CONFIG_GPIO),
 24	/* GPIO keys */
 25	IOMUX_MODE(MX31_PIN_GPIO1_0,	IOMUX_CONFIG_GPIO), /* 0 */
 26	IOMUX_MODE(MX31_PIN_GPIO1_1,	IOMUX_CONFIG_GPIO), /* 1 */
 27	IOMUX_MODE(MX31_PIN_GPIO1_2,	IOMUX_CONFIG_GPIO), /* 2 */
 28	IOMUX_MODE(MX31_PIN_GPIO1_3,	IOMUX_CONFIG_GPIO), /* 3 */
 29	IOMUX_MODE(MX31_PIN_SVEN0,	IOMUX_CONFIG_GPIO), /* 32 */
 30	IOMUX_MODE(MX31_PIN_STX0,	IOMUX_CONFIG_GPIO), /* 33 */
 31	IOMUX_MODE(MX31_PIN_SRX0,	IOMUX_CONFIG_GPIO), /* 34 */
 32	IOMUX_MODE(MX31_PIN_SIMPD0,	IOMUX_CONFIG_GPIO), /* 35 */
 33	IOMUX_MODE(MX31_PIN_RTS1,	IOMUX_CONFIG_GPIO), /* 38 */
 34	IOMUX_MODE(MX31_PIN_CTS1,	IOMUX_CONFIG_GPIO), /* 39 */
 35	IOMUX_MODE(MX31_PIN_KEY_ROW4,	IOMUX_CONFIG_GPIO), /* 50 */
 36	IOMUX_MODE(MX31_PIN_KEY_ROW5,	IOMUX_CONFIG_GPIO), /* 51 */
 37	IOMUX_MODE(MX31_PIN_KEY_ROW6,	IOMUX_CONFIG_GPIO), /* 52 */
 38	IOMUX_MODE(MX31_PIN_KEY_ROW7,	IOMUX_CONFIG_GPIO), /* 53 */
 39
 40	/* LEDs */
 41	IOMUX_MODE(MX31_PIN_DTR_DTE1,	IOMUX_CONFIG_GPIO), /* 44 */
 42	IOMUX_MODE(MX31_PIN_DSR_DTE1,	IOMUX_CONFIG_GPIO), /* 45 */
 43	IOMUX_MODE(MX31_PIN_KEY_COL5,	IOMUX_CONFIG_GPIO), /* 55 */
 44	IOMUX_MODE(MX31_PIN_KEY_COL6,	IOMUX_CONFIG_GPIO), /* 56 */
 45};
 46
 47/* SPI */
 48static struct spi_board_info pcm037_spi_dev[] = {
 49	{
 50		.modalias	= "dac124s085",
 51		.max_speed_hz	= 400000,
 52		.bus_num	= 0,
 53		.chip_select	= 0,		/* Index in pcm037_spi1_cs[] */
 54		.mode		= SPI_CPHA,
 55	},
 56};
 57
 58/* Platform Data for MXC CSPI */
 59static int pcm037_spi1_cs[] = {MXC_SPI_CS(1), IOMUX_TO_GPIO(MX31_PIN_KEY_COL7)};
 60
 61static const struct spi_imx_master pcm037_spi1_pdata __initconst = {
 62	.chipselect = pcm037_spi1_cs,
 63	.num_chipselect = ARRAY_SIZE(pcm037_spi1_cs),
 64};
 65
 66/* GPIO-keys input device */
 67static struct gpio_keys_button pcm037_gpio_keys[] = {
 68	{
 69		.type	= EV_KEY,
 70		.code	= KEY_L,
 71		.gpio	= 0,
 72		.desc	= "Wheel Manual",
 73		.wakeup	= 0,
 74	}, {
 75		.type	= EV_KEY,
 76		.code	= KEY_A,
 77		.gpio	= 1,
 78		.desc	= "Wheel AF",
 79		.wakeup	= 0,
 80	}, {
 81		.type	= EV_KEY,
 82		.code	= KEY_V,
 83		.gpio	= 2,
 84		.desc	= "Wheel View",
 85		.wakeup	= 0,
 86	}, {
 87		.type	= EV_KEY,
 88		.code	= KEY_M,
 89		.gpio	= 3,
 90		.desc	= "Wheel Menu",
 91		.wakeup	= 0,
 92	}, {
 93		.type	= EV_KEY,
 94		.code	= KEY_UP,
 95		.gpio	= 32,
 96		.desc	= "Nav Pad Up",
 97		.wakeup	= 0,
 98	}, {
 99		.type	= EV_KEY,
100		.code	= KEY_RIGHT,
101		.gpio	= 33,
102		.desc	= "Nav Pad Right",
103		.wakeup	= 0,
104	}, {
105		.type	= EV_KEY,
106		.code	= KEY_DOWN,
107		.gpio	= 34,
108		.desc	= "Nav Pad Down",
109		.wakeup	= 0,
110	}, {
111		.type	= EV_KEY,
112		.code	= KEY_LEFT,
113		.gpio	= 35,
114		.desc	= "Nav Pad Left",
115		.wakeup	= 0,
116	}, {
117		.type	= EV_KEY,
118		.code	= KEY_ENTER,
119		.gpio	= 38,
120		.desc	= "Nav Pad Ok",
121		.wakeup	= 0,
122	}, {
123		.type	= EV_KEY,
124		.code	= KEY_O,
125		.gpio	= 39,
126		.desc	= "Wheel Off",
127		.wakeup	= 0,
128	}, {
129		.type	= EV_KEY,
130		.code	= BTN_FORWARD,
131		.gpio	= 50,
132		.desc	= "Focus Forward",
133		.wakeup	= 0,
134	}, {
135		.type	= EV_KEY,
136		.code	= BTN_BACK,
137		.gpio	= 51,
138		.desc	= "Focus Backward",
139		.wakeup	= 0,
140	}, {
141		.type	= EV_KEY,
142		.code	= BTN_MIDDLE,
143		.gpio	= 52,
144		.desc	= "Release Half",
145		.wakeup	= 0,
146	}, {
147		.type	= EV_KEY,
148		.code	= BTN_EXTRA,
149		.gpio	= 53,
150		.desc	= "Release Full",
151		.wakeup	= 0,
152	},
153};
154
155static const struct gpio_keys_platform_data
156		pcm037_gpio_keys_platform_data __initconst = {
157	.buttons	= pcm037_gpio_keys,
158	.nbuttons	= ARRAY_SIZE(pcm037_gpio_keys),
159	.rep		= 0, /* No auto-repeat */
160};
161
162int __init pcm037_eet_init_devices(void)
163{
164	if (pcm037_variant() != PCM037_EET)
165		return 0;
166
167	mxc_iomux_setup_multiple_pins(pcm037_eet_pins,
168				ARRAY_SIZE(pcm037_eet_pins), "pcm037_eet");
169
170	/* SPI */
171	spi_register_board_info(pcm037_spi_dev, ARRAY_SIZE(pcm037_spi_dev));
172	imx31_add_spi_imx0(&pcm037_spi1_pdata);
173
174	imx_add_gpio_keys(&pcm037_gpio_keys_platform_data);
175
176	return 0;
177}