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
21 static 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 */
48 static struct spi_board_info pcm037_spi_dev[] = {
49 {
50 .modalias = "dac124s085",
51 .max_speed_hz = 400000,
52 .bus_num = 0,
53 .chip_select = 1, /* Index in pcm037_spi1_cs[] */
54 .mode = SPI_CPHA,
55 },
56 };
57
58 /* Platform Data for MXC CSPI */
59 static const struct spi_imx_master pcm037_spi1_pdata __initconst = {
60 .num_chipselect = 2,
61 };
62
63 /* GPIO-keys input device */
64 static struct gpio_keys_button pcm037_gpio_keys[] = {
65 {
66 .type = EV_KEY,
67 .code = KEY_L,
68 .gpio = 0,
69 .desc = "Wheel Manual",
70 .wakeup = 0,
71 }, {
72 .type = EV_KEY,
73 .code = KEY_A,
74 .gpio = 1,
75 .desc = "Wheel AF",
76 .wakeup = 0,
77 }, {
78 .type = EV_KEY,
79 .code = KEY_V,
80 .gpio = 2,
81 .desc = "Wheel View",
82 .wakeup = 0,
83 }, {
84 .type = EV_KEY,
85 .code = KEY_M,
86 .gpio = 3,
87 .desc = "Wheel Menu",
88 .wakeup = 0,
89 }, {
90 .type = EV_KEY,
91 .code = KEY_UP,
92 .gpio = 32,
93 .desc = "Nav Pad Up",
94 .wakeup = 0,
95 }, {
96 .type = EV_KEY,
97 .code = KEY_RIGHT,
98 .gpio = 33,
99 .desc = "Nav Pad Right",
100 .wakeup = 0,
101 }, {
102 .type = EV_KEY,
103 .code = KEY_DOWN,
104 .gpio = 34,
105 .desc = "Nav Pad Down",
106 .wakeup = 0,
107 }, {
108 .type = EV_KEY,
109 .code = KEY_LEFT,
110 .gpio = 35,
111 .desc = "Nav Pad Left",
112 .wakeup = 0,
113 }, {
114 .type = EV_KEY,
115 .code = KEY_ENTER,
116 .gpio = 38,
117 .desc = "Nav Pad Ok",
118 .wakeup = 0,
119 }, {
120 .type = EV_KEY,
121 .code = KEY_O,
122 .gpio = 39,
123 .desc = "Wheel Off",
124 .wakeup = 0,
125 }, {
126 .type = EV_KEY,
127 .code = BTN_FORWARD,
128 .gpio = 50,
129 .desc = "Focus Forward",
130 .wakeup = 0,
131 }, {
132 .type = EV_KEY,
133 .code = BTN_BACK,
134 .gpio = 51,
135 .desc = "Focus Backward",
136 .wakeup = 0,
137 }, {
138 .type = EV_KEY,
139 .code = BTN_MIDDLE,
140 .gpio = 52,
141 .desc = "Release Half",
142 .wakeup = 0,
143 }, {
144 .type = EV_KEY,
145 .code = BTN_EXTRA,
146 .gpio = 53,
147 .desc = "Release Full",
148 .wakeup = 0,
149 },
150 };
151
152 static const struct gpio_keys_platform_data
153 pcm037_gpio_keys_platform_data __initconst = {
154 .buttons = pcm037_gpio_keys,
155 .nbuttons = ARRAY_SIZE(pcm037_gpio_keys),
156 .rep = 0, /* No auto-repeat */
157 };
158
pcm037_eet_init_devices(void)159 int __init pcm037_eet_init_devices(void)
160 {
161 if (pcm037_variant() != PCM037_EET)
162 return 0;
163
164 mxc_iomux_setup_multiple_pins(pcm037_eet_pins,
165 ARRAY_SIZE(pcm037_eet_pins), "pcm037_eet");
166
167 /* SPI */
168 spi_register_board_info(pcm037_spi_dev, ARRAY_SIZE(pcm037_spi_dev));
169 imx31_add_spi_imx0(&pcm037_spi1_pdata);
170
171 imx_add_gpio_keys(&pcm037_gpio_keys_platform_data);
172
173 return 0;
174 }
175
