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 = 0, /* Index in pcm037_spi1_cs[] */
54 .mode = SPI_CPHA,
55 },
56 };
57
58 /* Platform Data for MXC CSPI */
59 static int pcm037_spi1_cs[] = {MXC_SPI_CS(1), IOMUX_TO_GPIO(MX31_PIN_KEY_COL7)};
60
61 static 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 */
67 static 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
155 static 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
pcm037_eet_init_devices(void)162 int __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 }
178