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 <mach/common.h>
15 #include <mach/iomux-mx3.h>
16
17 #include <asm/mach-types.h>
18
19 #include "pcm037.h"
20 #include "devices-imx31.h"
21
22 static unsigned int pcm037_eet_pins[] = {
23 /* Reserve and hardwire GPIO 57 high - S6E63D6 chipselect */
24 IOMUX_MODE(MX31_PIN_KEY_COL7, IOMUX_CONFIG_GPIO),
25 /* GPIO keys */
26 IOMUX_MODE(MX31_PIN_GPIO1_0, IOMUX_CONFIG_GPIO), /* 0 */
27 IOMUX_MODE(MX31_PIN_GPIO1_1, IOMUX_CONFIG_GPIO), /* 1 */
28 IOMUX_MODE(MX31_PIN_GPIO1_2, IOMUX_CONFIG_GPIO), /* 2 */
29 IOMUX_MODE(MX31_PIN_GPIO1_3, IOMUX_CONFIG_GPIO), /* 3 */
30 IOMUX_MODE(MX31_PIN_SVEN0, IOMUX_CONFIG_GPIO), /* 32 */
31 IOMUX_MODE(MX31_PIN_STX0, IOMUX_CONFIG_GPIO), /* 33 */
32 IOMUX_MODE(MX31_PIN_SRX0, IOMUX_CONFIG_GPIO), /* 34 */
33 IOMUX_MODE(MX31_PIN_SIMPD0, IOMUX_CONFIG_GPIO), /* 35 */
34 IOMUX_MODE(MX31_PIN_RTS1, IOMUX_CONFIG_GPIO), /* 38 */
35 IOMUX_MODE(MX31_PIN_CTS1, IOMUX_CONFIG_GPIO), /* 39 */
36 IOMUX_MODE(MX31_PIN_KEY_ROW4, IOMUX_CONFIG_GPIO), /* 50 */
37 IOMUX_MODE(MX31_PIN_KEY_ROW5, IOMUX_CONFIG_GPIO), /* 51 */
38 IOMUX_MODE(MX31_PIN_KEY_ROW6, IOMUX_CONFIG_GPIO), /* 52 */
39 IOMUX_MODE(MX31_PIN_KEY_ROW7, IOMUX_CONFIG_GPIO), /* 53 */
40
41 /* LEDs */
42 IOMUX_MODE(MX31_PIN_DTR_DTE1, IOMUX_CONFIG_GPIO), /* 44 */
43 IOMUX_MODE(MX31_PIN_DSR_DTE1, IOMUX_CONFIG_GPIO), /* 45 */
44 IOMUX_MODE(MX31_PIN_KEY_COL5, IOMUX_CONFIG_GPIO), /* 55 */
45 IOMUX_MODE(MX31_PIN_KEY_COL6, IOMUX_CONFIG_GPIO), /* 56 */
46 };
47
48 /* SPI */
49 static struct spi_board_info pcm037_spi_dev[] = {
50 {
51 .modalias = "dac124s085",
52 .max_speed_hz = 400000,
53 .bus_num = 0,
54 .chip_select = 0, /* Index in pcm037_spi1_cs[] */
55 .mode = SPI_CPHA,
56 },
57 };
58
59 /* Platform Data for MXC CSPI */
60 static int pcm037_spi1_cs[] = {MXC_SPI_CS(1), IOMUX_TO_GPIO(MX31_PIN_KEY_COL7)};
61
62 static const struct spi_imx_master pcm037_spi1_pdata __initconst = {
63 .chipselect = pcm037_spi1_cs,
64 .num_chipselect = ARRAY_SIZE(pcm037_spi1_cs),
65 };
66
67 /* GPIO-keys input device */
68 static struct gpio_keys_button pcm037_gpio_keys[] = {
69 {
70 .type = EV_KEY,
71 .code = KEY_L,
72 .gpio = 0,
73 .desc = "Wheel Manual",
74 .wakeup = 0,
75 }, {
76 .type = EV_KEY,
77 .code = KEY_A,
78 .gpio = 1,
79 .desc = "Wheel AF",
80 .wakeup = 0,
81 }, {
82 .type = EV_KEY,
83 .code = KEY_V,
84 .gpio = 2,
85 .desc = "Wheel View",
86 .wakeup = 0,
87 }, {
88 .type = EV_KEY,
89 .code = KEY_M,
90 .gpio = 3,
91 .desc = "Wheel Menu",
92 .wakeup = 0,
93 }, {
94 .type = EV_KEY,
95 .code = KEY_UP,
96 .gpio = 32,
97 .desc = "Nav Pad Up",
98 .wakeup = 0,
99 }, {
100 .type = EV_KEY,
101 .code = KEY_RIGHT,
102 .gpio = 33,
103 .desc = "Nav Pad Right",
104 .wakeup = 0,
105 }, {
106 .type = EV_KEY,
107 .code = KEY_DOWN,
108 .gpio = 34,
109 .desc = "Nav Pad Down",
110 .wakeup = 0,
111 }, {
112 .type = EV_KEY,
113 .code = KEY_LEFT,
114 .gpio = 35,
115 .desc = "Nav Pad Left",
116 .wakeup = 0,
117 }, {
118 .type = EV_KEY,
119 .code = KEY_ENTER,
120 .gpio = 38,
121 .desc = "Nav Pad Ok",
122 .wakeup = 0,
123 }, {
124 .type = EV_KEY,
125 .code = KEY_O,
126 .gpio = 39,
127 .desc = "Wheel Off",
128 .wakeup = 0,
129 }, {
130 .type = EV_KEY,
131 .code = BTN_FORWARD,
132 .gpio = 50,
133 .desc = "Focus Forward",
134 .wakeup = 0,
135 }, {
136 .type = EV_KEY,
137 .code = BTN_BACK,
138 .gpio = 51,
139 .desc = "Focus Backward",
140 .wakeup = 0,
141 }, {
142 .type = EV_KEY,
143 .code = BTN_MIDDLE,
144 .gpio = 52,
145 .desc = "Release Half",
146 .wakeup = 0,
147 }, {
148 .type = EV_KEY,
149 .code = BTN_EXTRA,
150 .gpio = 53,
151 .desc = "Release Full",
152 .wakeup = 0,
153 },
154 };
155
156 static const struct gpio_keys_platform_data
157 pcm037_gpio_keys_platform_data __initconst = {
158 .buttons = pcm037_gpio_keys,
159 .nbuttons = ARRAY_SIZE(pcm037_gpio_keys),
160 .rep = 0, /* No auto-repeat */
161 };
162
eet_init_devices(void)163 static int __init eet_init_devices(void)
164 {
165 if (!machine_is_pcm037() || pcm037_variant() != PCM037_EET)
166 return 0;
167
168 mxc_iomux_setup_multiple_pins(pcm037_eet_pins,
169 ARRAY_SIZE(pcm037_eet_pins), "pcm037_eet");
170
171 /* SPI */
172 spi_register_board_info(pcm037_spi_dev, ARRAY_SIZE(pcm037_spi_dev));
173 imx31_add_spi_imx0(&pcm037_spi1_pdata);
174
175 imx_add_gpio_keys(&pcm037_gpio_keys_platform_data);
176
177 return 0;
178 }
179 late_initcall(eet_init_devices);
180