Thomas Gleixner | 2874c5f | 2019-05-27 08:55:01 +0200 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
David Brownell | 0931a4c | 2008-12-22 12:05:27 +0100 | [diff] [blame] | 2 | /* |
| 3 | * dm355evm_msp.c - driver for MSP430 firmware on DM355EVM board |
| 4 | * |
| 5 | * Copyright (C) 2008 David Brownell |
David Brownell | 0931a4c | 2008-12-22 12:05:27 +0100 | [diff] [blame] | 6 | */ |
| 7 | |
| 8 | #include <linux/init.h> |
| 9 | #include <linux/mutex.h> |
| 10 | #include <linux/platform_device.h> |
| 11 | #include <linux/clk.h> |
Paul Gortmaker | 4e36dd3 | 2011-07-03 15:13:27 -0400 | [diff] [blame] | 12 | #include <linux/module.h> |
David Brownell | 0931a4c | 2008-12-22 12:05:27 +0100 | [diff] [blame] | 13 | #include <linux/err.h> |
| 14 | #include <linux/gpio.h> |
Linus Walleij | b6d213f | 2020-08-26 22:21:49 +0200 | [diff] [blame] | 15 | #include <linux/gpio/machine.h> |
David Brownell | 0931a4c | 2008-12-22 12:05:27 +0100 | [diff] [blame] | 16 | #include <linux/leds.h> |
| 17 | #include <linux/i2c.h> |
Wolfram Sang | 0335a95 | 2017-08-14 18:34:22 +0200 | [diff] [blame] | 18 | #include <linux/mfd/dm355evm_msp.h> |
David Brownell | 0931a4c | 2008-12-22 12:05:27 +0100 | [diff] [blame] | 19 | |
| 20 | |
| 21 | /* |
| 22 | * The DM355 is a DaVinci chip with video support but no C64+ DSP. Its |
| 23 | * EVM board has an MSP430 programmed with firmware for various board |
| 24 | * support functions. This driver exposes some of them directly, and |
| 25 | * supports other drivers (e.g. RTC, input) for more complex access. |
| 26 | * |
| 27 | * Because this firmware is entirely board-specific, this file embeds |
| 28 | * knowledge that would be passed as platform_data in a generic driver. |
| 29 | * |
| 30 | * This driver was tested with firmware revision A4. |
| 31 | */ |
| 32 | |
Javier Martinez Canillas | 5eb519f | 2016-04-20 13:45:46 -0400 | [diff] [blame] | 33 | #if IS_ENABLED(CONFIG_INPUT_DM355EVM) |
David Brownell | 0931a4c | 2008-12-22 12:05:27 +0100 | [diff] [blame] | 34 | #define msp_has_keyboard() true |
| 35 | #else |
| 36 | #define msp_has_keyboard() false |
| 37 | #endif |
| 38 | |
Javier Martinez Canillas | 5eb519f | 2016-04-20 13:45:46 -0400 | [diff] [blame] | 39 | #if IS_ENABLED(CONFIG_LEDS_GPIO) |
David Brownell | 0931a4c | 2008-12-22 12:05:27 +0100 | [diff] [blame] | 40 | #define msp_has_leds() true |
| 41 | #else |
| 42 | #define msp_has_leds() false |
| 43 | #endif |
| 44 | |
Javier Martinez Canillas | 5eb519f | 2016-04-20 13:45:46 -0400 | [diff] [blame] | 45 | #if IS_ENABLED(CONFIG_RTC_DRV_DM355EVM) |
David Brownell | 0931a4c | 2008-12-22 12:05:27 +0100 | [diff] [blame] | 46 | #define msp_has_rtc() true |
| 47 | #else |
| 48 | #define msp_has_rtc() false |
| 49 | #endif |
| 50 | |
Javier Martinez Canillas | 5eb519f | 2016-04-20 13:45:46 -0400 | [diff] [blame] | 51 | #if IS_ENABLED(CONFIG_VIDEO_TVP514X) |
David Brownell | 0931a4c | 2008-12-22 12:05:27 +0100 | [diff] [blame] | 52 | #define msp_has_tvp() true |
| 53 | #else |
| 54 | #define msp_has_tvp() false |
| 55 | #endif |
| 56 | |
| 57 | |
| 58 | /*----------------------------------------------------------------------*/ |
| 59 | |
| 60 | /* REVISIT for paranoia's sake, retry reads/writes on error */ |
| 61 | |
| 62 | static struct i2c_client *msp430; |
| 63 | |
| 64 | /** |
| 65 | * dm355evm_msp_write - Writes a register in dm355evm_msp |
| 66 | * @value: the value to be written |
| 67 | * @reg: register address |
| 68 | * |
| 69 | * Returns result of operation - 0 is success, else negative errno |
| 70 | */ |
| 71 | int dm355evm_msp_write(u8 value, u8 reg) |
| 72 | { |
| 73 | return i2c_smbus_write_byte_data(msp430, reg, value); |
| 74 | } |
| 75 | EXPORT_SYMBOL(dm355evm_msp_write); |
| 76 | |
| 77 | /** |
| 78 | * dm355evm_msp_read - Reads a register from dm355evm_msp |
| 79 | * @reg: register address |
| 80 | * |
| 81 | * Returns result of operation - value, or negative errno |
| 82 | */ |
| 83 | int dm355evm_msp_read(u8 reg) |
| 84 | { |
| 85 | return i2c_smbus_read_byte_data(msp430, reg); |
| 86 | } |
| 87 | EXPORT_SYMBOL(dm355evm_msp_read); |
| 88 | |
| 89 | /*----------------------------------------------------------------------*/ |
| 90 | |
| 91 | /* |
| 92 | * Many of the msp430 pins are just used as fixed-direction GPIOs. |
| 93 | * We could export a few more of them this way, if we wanted. |
| 94 | */ |
Lee Jones | 016f421 | 2014-07-21 13:06:42 +0100 | [diff] [blame] | 95 | #define MSP_GPIO(bit, reg) ((DM355EVM_MSP_ ## reg) << 3 | (bit)) |
David Brownell | 0931a4c | 2008-12-22 12:05:27 +0100 | [diff] [blame] | 96 | |
| 97 | static const u8 msp_gpios[] = { |
| 98 | /* eight leds */ |
| 99 | MSP_GPIO(0, LED), MSP_GPIO(1, LED), |
| 100 | MSP_GPIO(2, LED), MSP_GPIO(3, LED), |
| 101 | MSP_GPIO(4, LED), MSP_GPIO(5, LED), |
| 102 | MSP_GPIO(6, LED), MSP_GPIO(7, LED), |
| 103 | /* SW6 and the NTSC/nPAL jumper */ |
| 104 | MSP_GPIO(0, SWITCH1), MSP_GPIO(1, SWITCH1), |
| 105 | MSP_GPIO(2, SWITCH1), MSP_GPIO(3, SWITCH1), |
| 106 | MSP_GPIO(4, SWITCH1), |
David Brownell | d1fdb4f | 2009-01-09 02:02:42 +0100 | [diff] [blame] | 107 | /* switches on MMC/SD sockets */ |
Vipin Bhandari | 89a99e7 | 2009-07-30 04:19:17 -0400 | [diff] [blame] | 108 | /* |
| 109 | * Note: EVMDM355_ECP_VA4.pdf suggests that Bit 2 and 4 should be |
| 110 | * checked for card detection. However on the EVM bit 1 and 3 gives |
| 111 | * this status, for 0 and 1 instance respectively. The pdf also |
| 112 | * suggests that Bit 1 and 3 should be checked for write protection. |
| 113 | * However on the EVM bit 2 and 4 gives this status,for 0 and 1 |
| 114 | * instance respectively. |
| 115 | */ |
| 116 | MSP_GPIO(2, SDMMC), MSP_GPIO(1, SDMMC), /* mmc0 WP, nCD */ |
| 117 | MSP_GPIO(4, SDMMC), MSP_GPIO(3, SDMMC), /* mmc1 WP, nCD */ |
David Brownell | 0931a4c | 2008-12-22 12:05:27 +0100 | [diff] [blame] | 118 | }; |
| 119 | |
Linus Walleij | b6d213f | 2020-08-26 22:21:49 +0200 | [diff] [blame] | 120 | static struct gpio_led evm_leds[] = { |
| 121 | { .name = "dm355evm::ds14", |
| 122 | .default_trigger = "heartbeat", }, |
| 123 | { .name = "dm355evm::ds15", |
| 124 | .default_trigger = "mmc0", }, |
| 125 | { .name = "dm355evm::ds16", |
| 126 | /* could also be a CE-ATA drive */ |
| 127 | .default_trigger = "mmc1", }, |
| 128 | { .name = "dm355evm::ds17", |
| 129 | .default_trigger = "nand-disk", }, |
| 130 | { .name = "dm355evm::ds18", }, |
| 131 | { .name = "dm355evm::ds19", }, |
| 132 | { .name = "dm355evm::ds20", }, |
| 133 | { .name = "dm355evm::ds21", }, |
| 134 | }; |
| 135 | |
| 136 | static struct gpio_led_platform_data evm_led_data = { |
| 137 | .num_leds = ARRAY_SIZE(evm_leds), |
| 138 | .leds = evm_leds, |
| 139 | }; |
| 140 | |
| 141 | static struct gpiod_lookup_table evm_leds_gpio_table = { |
| 142 | .dev_id = "leds-gpio", |
| 143 | .table = { |
| 144 | /* |
| 145 | * These GPIOs are on the dm355evm_msp |
| 146 | * GPIO chip at index 0..7 |
| 147 | */ |
| 148 | GPIO_LOOKUP_IDX("dm355evm_msp", 0, NULL, |
| 149 | 0, GPIO_ACTIVE_LOW), |
| 150 | GPIO_LOOKUP_IDX("dm355evm_msp", 1, NULL, |
| 151 | 1, GPIO_ACTIVE_LOW), |
| 152 | GPIO_LOOKUP_IDX("dm355evm_msp", 2, NULL, |
| 153 | 2, GPIO_ACTIVE_LOW), |
| 154 | GPIO_LOOKUP_IDX("dm355evm_msp", 3, NULL, |
| 155 | 3, GPIO_ACTIVE_LOW), |
| 156 | GPIO_LOOKUP_IDX("dm355evm_msp", 4, NULL, |
| 157 | 4, GPIO_ACTIVE_LOW), |
| 158 | GPIO_LOOKUP_IDX("dm355evm_msp", 5, NULL, |
| 159 | 5, GPIO_ACTIVE_LOW), |
| 160 | GPIO_LOOKUP_IDX("dm355evm_msp", 6, NULL, |
| 161 | 6, GPIO_ACTIVE_LOW), |
| 162 | GPIO_LOOKUP_IDX("dm355evm_msp", 7, NULL, |
| 163 | 7, GPIO_ACTIVE_LOW), |
| 164 | { }, |
| 165 | }, |
| 166 | }; |
| 167 | |
David Brownell | 0931a4c | 2008-12-22 12:05:27 +0100 | [diff] [blame] | 168 | #define MSP_GPIO_REG(offset) (msp_gpios[(offset)] >> 3) |
| 169 | #define MSP_GPIO_MASK(offset) BIT(msp_gpios[(offset)] & 0x07) |
| 170 | |
| 171 | static int msp_gpio_in(struct gpio_chip *chip, unsigned offset) |
| 172 | { |
| 173 | switch (MSP_GPIO_REG(offset)) { |
| 174 | case DM355EVM_MSP_SWITCH1: |
| 175 | case DM355EVM_MSP_SWITCH2: |
| 176 | case DM355EVM_MSP_SDMMC: |
| 177 | return 0; |
| 178 | default: |
| 179 | return -EINVAL; |
| 180 | } |
| 181 | } |
| 182 | |
| 183 | static u8 msp_led_cache; |
| 184 | |
| 185 | static int msp_gpio_get(struct gpio_chip *chip, unsigned offset) |
| 186 | { |
| 187 | int reg, status; |
| 188 | |
| 189 | reg = MSP_GPIO_REG(offset); |
| 190 | status = dm355evm_msp_read(reg); |
| 191 | if (status < 0) |
| 192 | return status; |
| 193 | if (reg == DM355EVM_MSP_LED) |
| 194 | msp_led_cache = status; |
Linus Walleij | fe0b486 | 2015-12-22 15:47:31 +0100 | [diff] [blame] | 195 | return !!(status & MSP_GPIO_MASK(offset)); |
David Brownell | 0931a4c | 2008-12-22 12:05:27 +0100 | [diff] [blame] | 196 | } |
| 197 | |
| 198 | static int msp_gpio_out(struct gpio_chip *chip, unsigned offset, int value) |
| 199 | { |
| 200 | int mask, bits; |
| 201 | |
| 202 | /* NOTE: there are some other signals that could be |
| 203 | * packaged as output GPIOs, but they aren't as useful |
| 204 | * as the LEDs ... so for now we don't. |
| 205 | */ |
| 206 | if (MSP_GPIO_REG(offset) != DM355EVM_MSP_LED) |
| 207 | return -EINVAL; |
| 208 | |
| 209 | mask = MSP_GPIO_MASK(offset); |
| 210 | bits = msp_led_cache; |
| 211 | |
| 212 | bits &= ~mask; |
| 213 | if (value) |
| 214 | bits |= mask; |
| 215 | msp_led_cache = bits; |
| 216 | |
| 217 | return dm355evm_msp_write(bits, DM355EVM_MSP_LED); |
| 218 | } |
| 219 | |
| 220 | static void msp_gpio_set(struct gpio_chip *chip, unsigned offset, int value) |
| 221 | { |
| 222 | msp_gpio_out(chip, offset, value); |
| 223 | } |
| 224 | |
| 225 | static struct gpio_chip dm355evm_msp_gpio = { |
| 226 | .label = "dm355evm_msp", |
| 227 | .owner = THIS_MODULE, |
| 228 | .direction_input = msp_gpio_in, |
| 229 | .get = msp_gpio_get, |
| 230 | .direction_output = msp_gpio_out, |
| 231 | .set = msp_gpio_set, |
| 232 | .base = -EINVAL, /* dynamic assignment */ |
| 233 | .ngpio = ARRAY_SIZE(msp_gpios), |
| 234 | .can_sleep = true, |
| 235 | }; |
| 236 | |
| 237 | /*----------------------------------------------------------------------*/ |
| 238 | |
| 239 | static struct device *add_child(struct i2c_client *client, const char *name, |
| 240 | void *pdata, unsigned pdata_len, |
| 241 | bool can_wakeup, int irq) |
| 242 | { |
| 243 | struct platform_device *pdev; |
| 244 | int status; |
| 245 | |
| 246 | pdev = platform_device_alloc(name, -1); |
Markus Elfring | d313cdd | 2016-06-26 13:40:35 +0200 | [diff] [blame] | 247 | if (!pdev) |
| 248 | return ERR_PTR(-ENOMEM); |
David Brownell | 0931a4c | 2008-12-22 12:05:27 +0100 | [diff] [blame] | 249 | |
| 250 | device_init_wakeup(&pdev->dev, can_wakeup); |
| 251 | pdev->dev.parent = &client->dev; |
| 252 | |
| 253 | if (pdata) { |
| 254 | status = platform_device_add_data(pdev, pdata, pdata_len); |
| 255 | if (status < 0) { |
| 256 | dev_dbg(&pdev->dev, "can't add platform_data\n"); |
Markus Elfring | 2909026 | 2016-08-11 13:30:32 +0200 | [diff] [blame] | 257 | goto put_device; |
David Brownell | 0931a4c | 2008-12-22 12:05:27 +0100 | [diff] [blame] | 258 | } |
| 259 | } |
| 260 | |
| 261 | if (irq) { |
| 262 | struct resource r = { |
| 263 | .start = irq, |
| 264 | .flags = IORESOURCE_IRQ, |
| 265 | }; |
| 266 | |
| 267 | status = platform_device_add_resources(pdev, &r, 1); |
| 268 | if (status < 0) { |
| 269 | dev_dbg(&pdev->dev, "can't add irq\n"); |
Markus Elfring | 2909026 | 2016-08-11 13:30:32 +0200 | [diff] [blame] | 270 | goto put_device; |
David Brownell | 0931a4c | 2008-12-22 12:05:27 +0100 | [diff] [blame] | 271 | } |
| 272 | } |
| 273 | |
| 274 | status = platform_device_add(pdev); |
Markus Elfring | 2909026 | 2016-08-11 13:30:32 +0200 | [diff] [blame] | 275 | if (status) |
| 276 | goto put_device; |
David Brownell | 0931a4c | 2008-12-22 12:05:27 +0100 | [diff] [blame] | 277 | |
David Brownell | 0931a4c | 2008-12-22 12:05:27 +0100 | [diff] [blame] | 278 | return &pdev->dev; |
Markus Elfring | 2909026 | 2016-08-11 13:30:32 +0200 | [diff] [blame] | 279 | |
| 280 | put_device: |
| 281 | platform_device_put(pdev); |
| 282 | dev_err(&client->dev, "failed to add device %s\n", name); |
| 283 | return ERR_PTR(status); |
David Brownell | 0931a4c | 2008-12-22 12:05:27 +0100 | [diff] [blame] | 284 | } |
| 285 | |
| 286 | static int add_children(struct i2c_client *client) |
| 287 | { |
| 288 | static const struct { |
| 289 | int offset; |
| 290 | char *label; |
| 291 | } config_inputs[] = { |
| 292 | /* 8 == right after the LEDs */ |
| 293 | { 8 + 0, "sw6_1", }, |
| 294 | { 8 + 1, "sw6_2", }, |
| 295 | { 8 + 2, "sw6_3", }, |
| 296 | { 8 + 3, "sw6_4", }, |
| 297 | { 8 + 4, "NTSC/nPAL", }, |
| 298 | }; |
| 299 | |
| 300 | struct device *child; |
| 301 | int status; |
| 302 | int i; |
| 303 | |
| 304 | /* GPIO-ish stuff */ |
Linus Walleij | 58383c78 | 2015-11-04 09:56:26 +0100 | [diff] [blame] | 305 | dm355evm_msp_gpio.parent = &client->dev; |
Linus Walleij | 4363765 | 2016-03-30 10:48:02 +0200 | [diff] [blame] | 306 | status = gpiochip_add_data(&dm355evm_msp_gpio, NULL); |
David Brownell | 0931a4c | 2008-12-22 12:05:27 +0100 | [diff] [blame] | 307 | if (status < 0) |
| 308 | return status; |
| 309 | |
| 310 | /* LED output */ |
| 311 | if (msp_has_leds()) { |
Linus Walleij | b6d213f | 2020-08-26 22:21:49 +0200 | [diff] [blame] | 312 | gpiod_add_lookup_table(&evm_leds_gpio_table); |
David Brownell | 0931a4c | 2008-12-22 12:05:27 +0100 | [diff] [blame] | 313 | /* NOTE: these are the only fully programmable LEDs |
| 314 | * on the board, since GPIO-61/ds22 (and many signals |
| 315 | * going to DC7) must be used for AEMIF address lines |
| 316 | * unless the top 1 GB of NAND is unused... |
| 317 | */ |
| 318 | child = add_child(client, "leds-gpio", |
| 319 | &evm_led_data, sizeof(evm_led_data), |
| 320 | false, 0); |
| 321 | if (IS_ERR(child)) |
| 322 | return PTR_ERR(child); |
| 323 | } |
| 324 | |
| 325 | /* configuration inputs */ |
| 326 | for (i = 0; i < ARRAY_SIZE(config_inputs); i++) { |
| 327 | int gpio = dm355evm_msp_gpio.base + config_inputs[i].offset; |
| 328 | |
Axel Lin | 97f2bf5 | 2011-12-01 09:49:07 +0800 | [diff] [blame] | 329 | gpio_request_one(gpio, GPIOF_IN, config_inputs[i].label); |
David Brownell | 0931a4c | 2008-12-22 12:05:27 +0100 | [diff] [blame] | 330 | |
| 331 | /* make it easy for userspace to see these */ |
| 332 | gpio_export(gpio, false); |
| 333 | } |
| 334 | |
David Brownell | d1fdb4f | 2009-01-09 02:02:42 +0100 | [diff] [blame] | 335 | /* MMC/SD inputs -- right after the last config input */ |
Jingoo Han | 334a41ce | 2013-07-30 17:10:05 +0900 | [diff] [blame] | 336 | if (dev_get_platdata(&client->dev)) { |
| 337 | void (*mmcsd_setup)(unsigned) = dev_get_platdata(&client->dev); |
David Brownell | d1fdb4f | 2009-01-09 02:02:42 +0100 | [diff] [blame] | 338 | |
| 339 | mmcsd_setup(dm355evm_msp_gpio.base + 8 + 5); |
| 340 | } |
| 341 | |
David Brownell | 0931a4c | 2008-12-22 12:05:27 +0100 | [diff] [blame] | 342 | /* RTC is a 32 bit counter, no alarm */ |
| 343 | if (msp_has_rtc()) { |
| 344 | child = add_child(client, "rtc-dm355evm", |
| 345 | NULL, 0, false, 0); |
| 346 | if (IS_ERR(child)) |
| 347 | return PTR_ERR(child); |
| 348 | } |
| 349 | |
| 350 | /* input from buttons and IR remote (uses the IRQ) */ |
| 351 | if (msp_has_keyboard()) { |
| 352 | child = add_child(client, "dm355evm_keys", |
| 353 | NULL, 0, true, client->irq); |
| 354 | if (IS_ERR(child)) |
| 355 | return PTR_ERR(child); |
| 356 | } |
| 357 | |
| 358 | return 0; |
| 359 | } |
| 360 | |
| 361 | /*----------------------------------------------------------------------*/ |
| 362 | |
| 363 | static void dm355evm_command(unsigned command) |
| 364 | { |
| 365 | int status; |
| 366 | |
| 367 | status = dm355evm_msp_write(command, DM355EVM_MSP_COMMAND); |
| 368 | if (status < 0) |
| 369 | dev_err(&msp430->dev, "command %d failure %d\n", |
| 370 | command, status); |
| 371 | } |
| 372 | |
| 373 | static void dm355evm_power_off(void) |
| 374 | { |
| 375 | dm355evm_command(MSP_COMMAND_POWEROFF); |
| 376 | } |
| 377 | |
| 378 | static int dm355evm_msp_remove(struct i2c_client *client) |
| 379 | { |
| 380 | pm_power_off = NULL; |
| 381 | msp430 = NULL; |
| 382 | return 0; |
| 383 | } |
| 384 | |
| 385 | static int |
| 386 | dm355evm_msp_probe(struct i2c_client *client, const struct i2c_device_id *id) |
| 387 | { |
| 388 | int status; |
| 389 | const char *video = msp_has_tvp() ? "TVP5146" : "imager"; |
| 390 | |
| 391 | if (msp430) |
| 392 | return -EBUSY; |
| 393 | msp430 = client; |
| 394 | |
| 395 | /* display revision status; doubles as sanity check */ |
| 396 | status = dm355evm_msp_read(DM355EVM_MSP_FIRMREV); |
| 397 | if (status < 0) |
| 398 | goto fail; |
| 399 | dev_info(&client->dev, "firmware v.%02X, %s as video-in\n", |
| 400 | status, video); |
| 401 | |
| 402 | /* mux video input: either tvp5146 or some external imager */ |
| 403 | status = dm355evm_msp_write(msp_has_tvp() ? 0 : MSP_VIDEO_IMAGER, |
| 404 | DM355EVM_MSP_VIDEO_IN); |
| 405 | if (status < 0) |
| 406 | dev_warn(&client->dev, "error %d muxing %s as video-in\n", |
| 407 | status, video); |
| 408 | |
| 409 | /* init LED cache, and turn off the LEDs */ |
| 410 | msp_led_cache = 0xff; |
| 411 | dm355evm_msp_write(msp_led_cache, DM355EVM_MSP_LED); |
| 412 | |
| 413 | /* export capabilities we support */ |
| 414 | status = add_children(client); |
| 415 | if (status < 0) |
| 416 | goto fail; |
| 417 | |
| 418 | /* PM hookup */ |
| 419 | pm_power_off = dm355evm_power_off; |
| 420 | |
| 421 | return 0; |
| 422 | |
| 423 | fail: |
| 424 | /* FIXME remove children ... */ |
| 425 | dm355evm_msp_remove(client); |
| 426 | return status; |
| 427 | } |
| 428 | |
| 429 | static const struct i2c_device_id dm355evm_msp_ids[] = { |
| 430 | { "dm355evm_msp", 0 }, |
| 431 | { /* end of list */ }, |
| 432 | }; |
| 433 | MODULE_DEVICE_TABLE(i2c, dm355evm_msp_ids); |
| 434 | |
| 435 | static struct i2c_driver dm355evm_msp_driver = { |
| 436 | .driver.name = "dm355evm_msp", |
| 437 | .id_table = dm355evm_msp_ids, |
| 438 | .probe = dm355evm_msp_probe, |
| 439 | .remove = dm355evm_msp_remove, |
| 440 | }; |
| 441 | |
| 442 | static int __init dm355evm_msp_init(void) |
| 443 | { |
| 444 | return i2c_add_driver(&dm355evm_msp_driver); |
| 445 | } |
| 446 | subsys_initcall(dm355evm_msp_init); |
| 447 | |
| 448 | static void __exit dm355evm_msp_exit(void) |
| 449 | { |
| 450 | i2c_del_driver(&dm355evm_msp_driver); |
| 451 | } |
| 452 | module_exit(dm355evm_msp_exit); |
| 453 | |
| 454 | MODULE_DESCRIPTION("Interface to MSP430 firmware on DM355EVM"); |
| 455 | MODULE_LICENSE("GPL"); |