| 1 | /* |
| 2 | * arch/ubicom32/mach-ip7k/board-ip7160dpf.c |
| 3 | * Platform initialization for ip7160dpf board. |
| 4 | * |
| 5 | * (C) Copyright 2009, Ubicom, Inc. |
| 6 | * |
| 7 | * This file is part of the Ubicom32 Linux Kernel Port. |
| 8 | * |
| 9 | * The Ubicom32 Linux Kernel Port is free software: you can redistribute |
| 10 | * it and/or modify it under the terms of the GNU General Public License |
| 11 | * as published by the Free Software Foundation, either version 2 of the |
| 12 | * License, or (at your option) any later version. |
| 13 | * |
| 14 | * The Ubicom32 Linux Kernel Port is distributed in the hope that it |
| 15 | * will be useful, but WITHOUT ANY WARRANTY; without even the implied |
| 16 | * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See |
| 17 | * the GNU General Public License for more details. |
| 18 | * |
| 19 | * You should have received a copy of the GNU General Public License |
| 20 | * along with the Ubicom32 Linux Kernel Port. If not, |
| 21 | * see <http://www.gnu.org/licenses/>. |
| 22 | * |
| 23 | * Ubicom32 implementation derived from (with many thanks): |
| 24 | * arch/m68knommu |
| 25 | * arch/blackfin |
| 26 | * arch/parisc |
| 27 | */ |
| 28 | #include <linux/device.h> |
| 29 | #include <linux/platform_device.h> |
| 30 | #include <linux/delay.h> |
| 31 | #include <linux/gpio.h> |
| 32 | |
| 33 | #include <linux/i2c.h> |
| 34 | #include <linux/i2c-gpio.h> |
| 35 | |
| 36 | #include <linux/input.h> |
| 37 | |
| 38 | #include <asm/board.h> |
| 39 | #include <asm/machdep.h> |
| 40 | #include <asm/ubicom32hid.h> |
| 41 | #include <asm/vdc_tio.h> |
| 42 | #include <asm/audio.h> |
| 43 | |
| 44 | /* |
| 45 | * Backlight on the board PD0, hardware PWM |
| 46 | */ |
| 47 | static const struct ubicom32hid_button ip7160dpf_ubicom32hid_buttons[] = { |
| 48 | { |
| 49 | .type = EV_KEY, |
| 50 | .code = KEY_UP, |
| 51 | .bit = 0, |
| 52 | }, |
| 53 | { |
| 54 | .type = EV_KEY, |
| 55 | .code = KEY_LEFT, |
| 56 | .bit = 1, |
| 57 | }, |
| 58 | { |
| 59 | .type = EV_KEY, |
| 60 | .code = KEY_RIGHT, |
| 61 | .bit = 2, |
| 62 | }, |
| 63 | { |
| 64 | .type = EV_KEY, |
| 65 | .code = KEY_DOWN, |
| 66 | .bit = 3, |
| 67 | }, |
| 68 | { |
| 69 | .type = EV_KEY, |
| 70 | .code = KEY_ENTER, |
| 71 | .bit = 4, |
| 72 | }, |
| 73 | { |
| 74 | .type = EV_KEY, |
| 75 | .code = KEY_MENU, |
| 76 | .bit = 5, |
| 77 | }, |
| 78 | { |
| 79 | .type = EV_KEY, |
| 80 | .code = KEY_ESC, |
| 81 | .bit = 7, |
| 82 | }, |
| 83 | }; |
| 84 | |
| 85 | static const struct ubicom32hid_ir ip7160dpf_ubicom32hid_ircodes[] = { |
| 86 | { |
| 87 | .type = EV_KEY, |
| 88 | .code = KEY_UP, |
| 89 | .ir_code = 0xF807916E |
| 90 | }, |
| 91 | { |
| 92 | .type = EV_KEY, |
| 93 | .code = KEY_DOWN, |
| 94 | .ir_code = 0xF20D916E |
| 95 | }, |
| 96 | { |
| 97 | .type = EV_KEY, |
| 98 | .code = KEY_LEFT, |
| 99 | .ir_code = 0xF609916E |
| 100 | }, |
| 101 | { |
| 102 | .type = EV_KEY, |
| 103 | .code = KEY_RIGHT, |
| 104 | .ir_code = 0xF40B916E |
| 105 | }, |
| 106 | { |
| 107 | .type = EV_KEY, |
| 108 | .code = KEY_ENTER, |
| 109 | .ir_code = 0xF50A916E |
| 110 | }, |
| 111 | { /* rotate */ |
| 112 | .type = EV_KEY, |
| 113 | .code = KEY_FN_F1, |
| 114 | .ir_code = 0xF906916E |
| 115 | }, |
| 116 | { |
| 117 | .type = EV_KEY, |
| 118 | .code = KEY_MENU, |
| 119 | .ir_code = 0xF708916E |
| 120 | }, |
| 121 | { /* font size */ |
| 122 | .type = EV_KEY, |
| 123 | .code = KEY_FN_F2, |
| 124 | .ir_code = 0xF30C916E |
| 125 | }, |
| 126 | { |
| 127 | .type = EV_KEY, |
| 128 | .code = KEY_ESC, |
| 129 | .ir_code = 0xF10E916E |
| 130 | }, |
| 131 | { |
| 132 | .type = EV_KEY, |
| 133 | .code = KEY_VOLUMEUP, |
| 134 | .ir_code = 0xF00F916E |
| 135 | }, |
| 136 | { |
| 137 | .type = EV_KEY, |
| 138 | .code = KEY_VOLUMEDOWN, |
| 139 | .ir_code = 0xED12916E |
| 140 | }, |
| 141 | { |
| 142 | .type = EV_KEY, |
| 143 | .code = KEY_MUTE, |
| 144 | .ir_code = 0xEA15916E |
| 145 | }, |
| 146 | { |
| 147 | .type = EV_KEY, |
| 148 | .code = KEY_INFO, |
| 149 | .ir_code = 0xEF10916E |
| 150 | }, |
| 151 | { /* Like */ |
| 152 | .type = EV_KEY, |
| 153 | .code = KEY_FN_F3, |
| 154 | .ir_code = 0xEE11916E |
| 155 | }, |
| 156 | { /* Dislike */ |
| 157 | .type = EV_KEY, |
| 158 | .code = KEY_FN_F4, |
| 159 | .ir_code = 0xEB14916E |
| 160 | }, |
| 161 | { |
| 162 | .type = EV_KEY, |
| 163 | .code = KEY_POWER, |
| 164 | .ir_code = 0xFD02916E |
| 165 | }, |
| 166 | }; |
| 167 | |
| 168 | static struct ubicom32hid_platform_data ip7160dpf_ubicom32hid_platform_data = { |
| 169 | .gpio_reset = GPIO_RI_5, |
| 170 | .gpio_reset_polarity = 0, |
| 171 | .type = UBICOM32HID_BL_TYPE_PWM, |
| 172 | .invert = 0, |
| 173 | .default_intensity = 128, |
| 174 | .buttons = ip7160dpf_ubicom32hid_buttons, |
| 175 | .nbuttons = ARRAY_SIZE(ip7160dpf_ubicom32hid_buttons), |
| 176 | .ircodes = ip7160dpf_ubicom32hid_ircodes, |
| 177 | .nircodes = ARRAY_SIZE(ip7160dpf_ubicom32hid_ircodes), |
| 178 | }; |
| 179 | |
| 180 | /* |
| 181 | * Devices on the I2C bus |
| 182 | * This board has a "bus 2" which is isolated from the main bus by U47 |
| 183 | * and pin RI0. It should be safe to always enable bus 2 by setting |
| 184 | * RI0 to low, however, it should be noted that on all existing configurations |
| 185 | * of this board, U49 and U51 are not populated. |
| 186 | */ |
| 187 | static struct i2c_board_info __initdata ip7160dpf_i2c_board_info[] = { |
| 188 | /* |
| 189 | * U37, CS4350 DAC, address 0x4B, bus 2 |
| 190 | * THIS ENTRY MUST BE FIRST |
| 191 | */ |
| 192 | { |
| 193 | .type = "cs4350", |
| 194 | .addr = 0x4B, |
| 195 | } |
| 196 | |
| 197 | /* |
| 198 | * U24, ubicom32hid |
| 199 | */ |
| 200 | { |
| 201 | .type = "ubicom32hid", |
| 202 | .addr = 0x08, |
| 203 | .platform_data = &ip7160dpf_ubicom32hid_platform_data, |
| 204 | }, |
| 205 | |
| 206 | /* |
| 207 | * U49, ISL29001 Ambient Light Sensor, address 0x44, bus 2 (may not be stuffed) |
| 208 | */ |
| 209 | |
| 210 | /* |
| 211 | * U51, S35390A RTC, address 0x30, bus 2 (may not be stuffed) |
| 212 | */ |
| 213 | #ifdef CONFIG_RTC_DRV_S35390A |
| 214 | { |
| 215 | .type = "s35390a", |
| 216 | .addr = 0x30, |
| 217 | }, |
| 218 | #endif |
| 219 | }; |
| 220 | |
| 221 | /* |
| 222 | * I2C bus on the board, SDA PI1, SCL PI2 |
| 223 | */ |
| 224 | static struct i2c_gpio_platform_data ip7160dpf_i2c_data = { |
| 225 | .sda_pin = GPIO_RI_1, |
| 226 | .scl_pin = GPIO_RI_2, |
| 227 | .sda_is_open_drain = 0, |
| 228 | .scl_is_open_drain = 0, |
| 229 | .scl_is_output_only = 1, |
| 230 | .udelay = 6, |
| 231 | }; |
| 232 | |
| 233 | static struct platform_device ip7160dpf_i2c_device = { |
| 234 | .name = "i2c-gpio", |
| 235 | .id = 0, |
| 236 | .dev = { |
| 237 | .platform_data = &ip7160dpf_i2c_data, |
| 238 | }, |
| 239 | }; |
| 240 | |
| 241 | /* |
| 242 | * List of all devices in our system |
| 243 | */ |
| 244 | static struct platform_device *ip7160dpf_devices[] __initdata = { |
| 245 | &ip7160dpf_i2c_device, |
| 246 | }; |
| 247 | |
| 248 | /* |
| 249 | * ip7160dpf_power_off |
| 250 | * Called to turn the power off for this board |
| 251 | */ |
| 252 | static void ip7160dpf_power_off(void) |
| 253 | { |
| 254 | gpio_set_value(GPIO_RF_14, 0); |
| 255 | } |
| 256 | |
| 257 | /* |
| 258 | * ip7160dpf_init |
| 259 | * Called to add the devices which we have on this board |
| 260 | */ |
| 261 | static int __init ip7160dpf_init(void) |
| 262 | { |
| 263 | int ret; |
| 264 | struct platform_device *audio_dev; |
| 265 | |
| 266 | ubi_gpio_init(); |
| 267 | |
| 268 | /* |
| 269 | * Hold the POWER_HOLD line |
| 270 | */ |
| 271 | ret = gpio_request(GPIO_RF_14, "POWER_HOLD"); |
| 272 | if (ret) { |
| 273 | printk(KERN_ERR "%s: could not request POWER_HOLD GPIO\n", __FUNCTION__); |
| 274 | } |
| 275 | gpio_direction_output(GPIO_RF_14, 1); |
| 276 | mach_power_off = ip7160dpf_power_off; |
| 277 | |
| 278 | /* |
| 279 | * USB SEL_HOST_USB line |
| 280 | */ |
| 281 | ret = gpio_request(GPIO_RI_13, "SEL_HOST_USB"); |
| 282 | if (ret) { |
| 283 | printk(KERN_ERR "%s: could not request SEL_HOST_USB GPIO\n", __FUNCTION__); |
| 284 | } |
| 285 | gpio_direction_output(GPIO_RI_13, 0); |
| 286 | |
| 287 | /* |
| 288 | * USB/DAC nRESET line |
| 289 | */ |
| 290 | ret = gpio_request(GPIO_RI_3, "USB_DAC_nRESET"); |
| 291 | if (ret) { |
| 292 | printk(KERN_ERR "%s: could not request USB_DAC_nRESET GPIO\n", __FUNCTION__); |
| 293 | } |
| 294 | gpio_direction_output(GPIO_RI_3, 0); |
| 295 | udelay(1); |
| 296 | gpio_direction_output(GPIO_RI_3, 1); |
| 297 | |
| 298 | /* |
| 299 | * I2C BUS2 Disable line |
| 300 | */ |
| 301 | ret = gpio_request(GPIO_RI_0, "DISABLE_BUS2"); |
| 302 | if (ret) { |
| 303 | printk(KERN_ERR "%s: could not request DISABLE_BUS2 GPIO\n", __FUNCTION__); |
| 304 | } |
| 305 | gpio_direction_output(GPIO_RI_0, 0); |
| 306 | |
| 307 | vdc_tio_init(); |
| 308 | |
| 309 | printk(KERN_INFO "%s: registering device resources\n", __FUNCTION__); |
| 310 | platform_add_devices(ip7160dpf_devices, ARRAY_SIZE(ip7160dpf_devices)); |
| 311 | |
| 312 | /* |
| 313 | * Allocate the audio driver if we can |
| 314 | */ |
| 315 | audio_dev = audio_device_alloc("snd-ubi32-cs4350", "audio-i2sout", 0); |
| 316 | if (audio_dev) { |
| 317 | ip7160dpf_i2c_board_info[0].platform_data = audio_dev; |
| 318 | } |
| 319 | |
| 320 | printk(KERN_INFO "%s: registering i2c resources\n", __FUNCTION__); |
| 321 | i2c_register_board_info(0, ip7160dpf_i2c_board_info, ARRAY_SIZE(ip7160dpf_i2c_board_info)); |
| 322 | |
| 323 | return 0; |
| 324 | } |
| 325 | |
| 326 | arch_initcall(ip7160dpf_init); |
| 327 | |
