Andrew Victor | 877d772 | 2007-05-11 20:49:56 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2007 Atmel Corporation |
| 3 | * |
| 4 | * This file is subject to the terms and conditions of the GNU General Public |
| 5 | * License. See the file COPYING in the main directory of this archive for |
| 6 | * more details. |
| 7 | */ |
| 8 | |
| 9 | #include <asm/mach/arch.h> |
| 10 | #include <asm/mach/map.h> |
| 11 | |
| 12 | #include <linux/platform_device.h> |
Andrew Victor | f230d3f | 2007-11-19 13:47:20 +0100 | [diff] [blame] | 13 | #include <linux/i2c-gpio.h> |
Andrew Victor | 877d772 | 2007-05-11 20:49:56 +0100 | [diff] [blame] | 14 | |
Andrew Victor | f230d3f | 2007-11-19 13:47:20 +0100 | [diff] [blame] | 15 | #include <linux/fb.h> |
Andrew Victor | 877d772 | 2007-05-11 20:49:56 +0100 | [diff] [blame] | 16 | #include <video/atmel_lcdc.h> |
| 17 | |
| 18 | #include <asm/arch/board.h> |
| 19 | #include <asm/arch/gpio.h> |
| 20 | #include <asm/arch/at91sam9rl.h> |
| 21 | #include <asm/arch/at91sam9rl_matrix.h> |
| 22 | #include <asm/arch/at91sam926x_mc.h> |
| 23 | |
| 24 | #include "generic.h" |
| 25 | |
Andrew Victor | 877d772 | 2007-05-11 20:49:56 +0100 | [diff] [blame] | 26 | |
| 27 | /* -------------------------------------------------------------------- |
| 28 | * MMC / SD |
| 29 | * -------------------------------------------------------------------- */ |
| 30 | |
| 31 | #if defined(CONFIG_MMC_AT91) || defined(CONFIG_MMC_AT91_MODULE) |
| 32 | static u64 mmc_dmamask = 0xffffffffUL; |
| 33 | static struct at91_mmc_data mmc_data; |
| 34 | |
| 35 | static struct resource mmc_resources[] = { |
| 36 | [0] = { |
| 37 | .start = AT91SAM9RL_BASE_MCI, |
| 38 | .end = AT91SAM9RL_BASE_MCI + SZ_16K - 1, |
| 39 | .flags = IORESOURCE_MEM, |
| 40 | }, |
| 41 | [1] = { |
| 42 | .start = AT91SAM9RL_ID_MCI, |
| 43 | .end = AT91SAM9RL_ID_MCI, |
| 44 | .flags = IORESOURCE_IRQ, |
| 45 | }, |
| 46 | }; |
| 47 | |
| 48 | static struct platform_device at91sam9rl_mmc_device = { |
| 49 | .name = "at91_mci", |
| 50 | .id = -1, |
| 51 | .dev = { |
| 52 | .dma_mask = &mmc_dmamask, |
| 53 | .coherent_dma_mask = 0xffffffff, |
| 54 | .platform_data = &mmc_data, |
| 55 | }, |
| 56 | .resource = mmc_resources, |
| 57 | .num_resources = ARRAY_SIZE(mmc_resources), |
| 58 | }; |
| 59 | |
| 60 | void __init at91_add_device_mmc(short mmc_id, struct at91_mmc_data *data) |
| 61 | { |
| 62 | if (!data) |
| 63 | return; |
| 64 | |
| 65 | /* input/irq */ |
| 66 | if (data->det_pin) { |
| 67 | at91_set_gpio_input(data->det_pin, 1); |
| 68 | at91_set_deglitch(data->det_pin, 1); |
| 69 | } |
| 70 | if (data->wp_pin) |
| 71 | at91_set_gpio_input(data->wp_pin, 1); |
| 72 | if (data->vcc_pin) |
| 73 | at91_set_gpio_output(data->vcc_pin, 0); |
| 74 | |
| 75 | /* CLK */ |
| 76 | at91_set_A_periph(AT91_PIN_PA2, 0); |
| 77 | |
| 78 | /* CMD */ |
| 79 | at91_set_A_periph(AT91_PIN_PA1, 1); |
| 80 | |
| 81 | /* DAT0, maybe DAT1..DAT3 */ |
| 82 | at91_set_A_periph(AT91_PIN_PA0, 1); |
| 83 | if (data->wire4) { |
| 84 | at91_set_A_periph(AT91_PIN_PA3, 1); |
| 85 | at91_set_A_periph(AT91_PIN_PA4, 1); |
| 86 | at91_set_A_periph(AT91_PIN_PA5, 1); |
| 87 | } |
| 88 | |
| 89 | mmc_data = *data; |
| 90 | platform_device_register(&at91sam9rl_mmc_device); |
| 91 | } |
| 92 | #else |
| 93 | void __init at91_add_device_mmc(short mmc_id, struct at91_mmc_data *data) {} |
| 94 | #endif |
| 95 | |
| 96 | |
| 97 | /* -------------------------------------------------------------------- |
| 98 | * NAND / SmartMedia |
| 99 | * -------------------------------------------------------------------- */ |
| 100 | |
| 101 | #if defined(CONFIG_MTD_NAND_AT91) || defined(CONFIG_MTD_NAND_AT91_MODULE) |
| 102 | static struct at91_nand_data nand_data; |
| 103 | |
| 104 | #define NAND_BASE AT91_CHIPSELECT_3 |
| 105 | |
| 106 | static struct resource nand_resources[] = { |
| 107 | { |
| 108 | .start = NAND_BASE, |
| 109 | .end = NAND_BASE + SZ_256M - 1, |
| 110 | .flags = IORESOURCE_MEM, |
| 111 | } |
| 112 | }; |
| 113 | |
| 114 | static struct platform_device at91_nand_device = { |
| 115 | .name = "at91_nand", |
| 116 | .id = -1, |
| 117 | .dev = { |
| 118 | .platform_data = &nand_data, |
| 119 | }, |
| 120 | .resource = nand_resources, |
| 121 | .num_resources = ARRAY_SIZE(nand_resources), |
| 122 | }; |
| 123 | |
| 124 | void __init at91_add_device_nand(struct at91_nand_data *data) |
| 125 | { |
| 126 | unsigned long csa; |
| 127 | |
| 128 | if (!data) |
| 129 | return; |
| 130 | |
| 131 | csa = at91_sys_read(AT91_MATRIX_EBICSA); |
| 132 | at91_sys_write(AT91_MATRIX_EBICSA, csa | AT91_MATRIX_CS3A_SMC_SMARTMEDIA); |
| 133 | |
| 134 | /* set the bus interface characteristics */ |
| 135 | at91_sys_write(AT91_SMC_SETUP(3), AT91_SMC_NWESETUP_(0) | AT91_SMC_NCS_WRSETUP_(0) |
| 136 | | AT91_SMC_NRDSETUP_(0) | AT91_SMC_NCS_RDSETUP_(0)); |
| 137 | |
| 138 | at91_sys_write(AT91_SMC_PULSE(3), AT91_SMC_NWEPULSE_(2) | AT91_SMC_NCS_WRPULSE_(5) |
| 139 | | AT91_SMC_NRDPULSE_(2) | AT91_SMC_NCS_RDPULSE_(5)); |
| 140 | |
| 141 | at91_sys_write(AT91_SMC_CYCLE(3), AT91_SMC_NWECYCLE_(7) | AT91_SMC_NRDCYCLE_(7)); |
| 142 | |
| 143 | at91_sys_write(AT91_SMC_MODE(3), AT91_SMC_DBW_8 | AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_TDF_(1)); |
| 144 | |
| 145 | /* enable pin */ |
| 146 | if (data->enable_pin) |
| 147 | at91_set_gpio_output(data->enable_pin, 1); |
| 148 | |
| 149 | /* ready/busy pin */ |
| 150 | if (data->rdy_pin) |
| 151 | at91_set_gpio_input(data->rdy_pin, 1); |
| 152 | |
| 153 | /* card detect pin */ |
| 154 | if (data->det_pin) |
| 155 | at91_set_gpio_input(data->det_pin, 1); |
| 156 | |
| 157 | at91_set_A_periph(AT91_PIN_PB4, 0); /* NANDOE */ |
| 158 | at91_set_A_periph(AT91_PIN_PB5, 0); /* NANDWE */ |
| 159 | |
| 160 | nand_data = *data; |
| 161 | platform_device_register(&at91_nand_device); |
| 162 | } |
| 163 | |
| 164 | #else |
| 165 | void __init at91_add_device_nand(struct at91_nand_data *data) {} |
| 166 | #endif |
| 167 | |
| 168 | |
| 169 | /* -------------------------------------------------------------------- |
| 170 | * TWI (i2c) |
| 171 | * -------------------------------------------------------------------- */ |
| 172 | |
Andrew Victor | f230d3f | 2007-11-19 13:47:20 +0100 | [diff] [blame] | 173 | /* |
| 174 | * Prefer the GPIO code since the TWI controller isn't robust |
| 175 | * (gets overruns and underruns under load) and can only issue |
| 176 | * repeated STARTs in one scenario (the driver doesn't yet handle them). |
| 177 | */ |
| 178 | #if defined(CONFIG_I2C_GPIO) || defined(CONFIG_I2C_GPIO_MODULE) |
| 179 | |
| 180 | static struct i2c_gpio_platform_data pdata = { |
| 181 | .sda_pin = AT91_PIN_PA23, |
| 182 | .sda_is_open_drain = 1, |
| 183 | .scl_pin = AT91_PIN_PA24, |
| 184 | .scl_is_open_drain = 1, |
| 185 | .udelay = 2, /* ~100 kHz */ |
| 186 | }; |
| 187 | |
| 188 | static struct platform_device at91sam9rl_twi_device = { |
| 189 | .name = "i2c-gpio", |
| 190 | .id = -1, |
| 191 | .dev.platform_data = &pdata, |
| 192 | }; |
| 193 | |
| 194 | void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices) |
| 195 | { |
| 196 | at91_set_GPIO_periph(AT91_PIN_PA23, 1); /* TWD (SDA) */ |
| 197 | at91_set_multi_drive(AT91_PIN_PA23, 1); |
| 198 | |
| 199 | at91_set_GPIO_periph(AT91_PIN_PA24, 1); /* TWCK (SCL) */ |
| 200 | at91_set_multi_drive(AT91_PIN_PA24, 1); |
| 201 | |
| 202 | i2c_register_board_info(0, devices, nr_devices); |
| 203 | platform_device_register(&at91sam9rl_twi_device); |
| 204 | } |
| 205 | |
| 206 | #elif defined(CONFIG_I2C_AT91) || defined(CONFIG_I2C_AT91_MODULE) |
Andrew Victor | 877d772 | 2007-05-11 20:49:56 +0100 | [diff] [blame] | 207 | |
| 208 | static struct resource twi_resources[] = { |
| 209 | [0] = { |
| 210 | .start = AT91SAM9RL_BASE_TWI0, |
| 211 | .end = AT91SAM9RL_BASE_TWI0 + SZ_16K - 1, |
| 212 | .flags = IORESOURCE_MEM, |
| 213 | }, |
| 214 | [1] = { |
| 215 | .start = AT91SAM9RL_ID_TWI0, |
| 216 | .end = AT91SAM9RL_ID_TWI0, |
| 217 | .flags = IORESOURCE_IRQ, |
| 218 | }, |
| 219 | }; |
| 220 | |
| 221 | static struct platform_device at91sam9rl_twi_device = { |
| 222 | .name = "at91_i2c", |
| 223 | .id = -1, |
| 224 | .resource = twi_resources, |
| 225 | .num_resources = ARRAY_SIZE(twi_resources), |
| 226 | }; |
| 227 | |
Andrew Victor | f230d3f | 2007-11-19 13:47:20 +0100 | [diff] [blame] | 228 | void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices) |
Andrew Victor | 877d772 | 2007-05-11 20:49:56 +0100 | [diff] [blame] | 229 | { |
| 230 | /* pins used for TWI interface */ |
| 231 | at91_set_A_periph(AT91_PIN_PA23, 0); /* TWD */ |
| 232 | at91_set_multi_drive(AT91_PIN_PA23, 1); |
| 233 | |
| 234 | at91_set_A_periph(AT91_PIN_PA24, 0); /* TWCK */ |
| 235 | at91_set_multi_drive(AT91_PIN_PA24, 1); |
| 236 | |
Andrew Victor | f230d3f | 2007-11-19 13:47:20 +0100 | [diff] [blame] | 237 | i2c_register_board_info(0, devices, nr_devices); |
Andrew Victor | 877d772 | 2007-05-11 20:49:56 +0100 | [diff] [blame] | 238 | platform_device_register(&at91sam9rl_twi_device); |
| 239 | } |
| 240 | #else |
Andrew Victor | f230d3f | 2007-11-19 13:47:20 +0100 | [diff] [blame] | 241 | void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices) {} |
Andrew Victor | 877d772 | 2007-05-11 20:49:56 +0100 | [diff] [blame] | 242 | #endif |
| 243 | |
| 244 | |
| 245 | /* -------------------------------------------------------------------- |
| 246 | * SPI |
| 247 | * -------------------------------------------------------------------- */ |
| 248 | |
| 249 | #if defined(CONFIG_SPI_ATMEL) || defined(CONFIG_SPI_ATMEL_MODULE) |
| 250 | static u64 spi_dmamask = 0xffffffffUL; |
| 251 | |
| 252 | static struct resource spi_resources[] = { |
| 253 | [0] = { |
| 254 | .start = AT91SAM9RL_BASE_SPI, |
| 255 | .end = AT91SAM9RL_BASE_SPI + SZ_16K - 1, |
| 256 | .flags = IORESOURCE_MEM, |
| 257 | }, |
| 258 | [1] = { |
| 259 | .start = AT91SAM9RL_ID_SPI, |
| 260 | .end = AT91SAM9RL_ID_SPI, |
| 261 | .flags = IORESOURCE_IRQ, |
| 262 | }, |
| 263 | }; |
| 264 | |
| 265 | static struct platform_device at91sam9rl_spi_device = { |
| 266 | .name = "atmel_spi", |
| 267 | .id = 0, |
| 268 | .dev = { |
| 269 | .dma_mask = &spi_dmamask, |
| 270 | .coherent_dma_mask = 0xffffffff, |
| 271 | }, |
| 272 | .resource = spi_resources, |
| 273 | .num_resources = ARRAY_SIZE(spi_resources), |
| 274 | }; |
| 275 | |
| 276 | static const unsigned spi_standard_cs[4] = { AT91_PIN_PA28, AT91_PIN_PB7, AT91_PIN_PD8, AT91_PIN_PD9 }; |
| 277 | |
| 278 | |
| 279 | void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices) |
| 280 | { |
| 281 | int i; |
| 282 | unsigned long cs_pin; |
| 283 | |
| 284 | at91_set_A_periph(AT91_PIN_PA25, 0); /* MISO */ |
| 285 | at91_set_A_periph(AT91_PIN_PA26, 0); /* MOSI */ |
| 286 | at91_set_A_periph(AT91_PIN_PA27, 0); /* SPCK */ |
| 287 | |
| 288 | /* Enable SPI chip-selects */ |
| 289 | for (i = 0; i < nr_devices; i++) { |
| 290 | if (devices[i].controller_data) |
| 291 | cs_pin = (unsigned long) devices[i].controller_data; |
| 292 | else |
| 293 | cs_pin = spi_standard_cs[devices[i].chip_select]; |
| 294 | |
| 295 | /* enable chip-select pin */ |
| 296 | at91_set_gpio_output(cs_pin, 1); |
| 297 | |
| 298 | /* pass chip-select pin to driver */ |
| 299 | devices[i].controller_data = (void *) cs_pin; |
| 300 | } |
| 301 | |
| 302 | spi_register_board_info(devices, nr_devices); |
| 303 | platform_device_register(&at91sam9rl_spi_device); |
| 304 | } |
| 305 | #else |
| 306 | void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices) {} |
| 307 | #endif |
| 308 | |
| 309 | |
| 310 | /* -------------------------------------------------------------------- |
| 311 | * LCD Controller |
| 312 | * -------------------------------------------------------------------- */ |
| 313 | |
| 314 | #if defined(CONFIG_FB_ATMEL) || defined(CONFIG_FB_ATMEL_MODULE) |
| 315 | static u64 lcdc_dmamask = 0xffffffffUL; |
| 316 | static struct atmel_lcdfb_info lcdc_data; |
| 317 | |
| 318 | static struct resource lcdc_resources[] = { |
| 319 | [0] = { |
| 320 | .start = AT91SAM9RL_LCDC_BASE, |
| 321 | .end = AT91SAM9RL_LCDC_BASE + SZ_4K - 1, |
| 322 | .flags = IORESOURCE_MEM, |
| 323 | }, |
| 324 | [1] = { |
| 325 | .start = AT91SAM9RL_ID_LCDC, |
| 326 | .end = AT91SAM9RL_ID_LCDC, |
| 327 | .flags = IORESOURCE_IRQ, |
| 328 | }, |
| 329 | #if defined(CONFIG_FB_INTSRAM) |
| 330 | [2] = { |
| 331 | .start = AT91SAM9RL_SRAM_BASE, |
| 332 | .end = AT91SAM9RL_SRAM_BASE + AT91SAM9RL_SRAM_SIZE - 1, |
| 333 | .flags = IORESOURCE_MEM, |
| 334 | }, |
| 335 | #endif |
| 336 | }; |
| 337 | |
| 338 | static struct platform_device at91_lcdc_device = { |
| 339 | .name = "atmel_lcdfb", |
| 340 | .id = 0, |
| 341 | .dev = { |
| 342 | .dma_mask = &lcdc_dmamask, |
| 343 | .coherent_dma_mask = 0xffffffff, |
| 344 | .platform_data = &lcdc_data, |
| 345 | }, |
| 346 | .resource = lcdc_resources, |
| 347 | .num_resources = ARRAY_SIZE(lcdc_resources), |
| 348 | }; |
| 349 | |
| 350 | void __init at91_add_device_lcdc(struct atmel_lcdfb_info *data) |
| 351 | { |
| 352 | if (!data) { |
| 353 | return; |
| 354 | } |
| 355 | |
| 356 | at91_set_B_periph(AT91_PIN_PC1, 0); /* LCDPWR */ |
| 357 | at91_set_A_periph(AT91_PIN_PC5, 0); /* LCDHSYNC */ |
| 358 | at91_set_A_periph(AT91_PIN_PC6, 0); /* LCDDOTCK */ |
| 359 | at91_set_A_periph(AT91_PIN_PC7, 0); /* LCDDEN */ |
| 360 | at91_set_A_periph(AT91_PIN_PC3, 0); /* LCDCC */ |
| 361 | at91_set_B_periph(AT91_PIN_PC9, 0); /* LCDD3 */ |
| 362 | at91_set_B_periph(AT91_PIN_PC10, 0); /* LCDD4 */ |
| 363 | at91_set_B_periph(AT91_PIN_PC11, 0); /* LCDD5 */ |
| 364 | at91_set_B_periph(AT91_PIN_PC12, 0); /* LCDD6 */ |
| 365 | at91_set_B_periph(AT91_PIN_PC13, 0); /* LCDD7 */ |
| 366 | at91_set_B_periph(AT91_PIN_PC15, 0); /* LCDD11 */ |
| 367 | at91_set_B_periph(AT91_PIN_PC16, 0); /* LCDD12 */ |
| 368 | at91_set_B_periph(AT91_PIN_PC17, 0); /* LCDD13 */ |
| 369 | at91_set_B_periph(AT91_PIN_PC18, 0); /* LCDD14 */ |
| 370 | at91_set_B_periph(AT91_PIN_PC19, 0); /* LCDD15 */ |
| 371 | at91_set_B_periph(AT91_PIN_PC20, 0); /* LCDD18 */ |
| 372 | at91_set_B_periph(AT91_PIN_PC21, 0); /* LCDD19 */ |
| 373 | at91_set_B_periph(AT91_PIN_PC22, 0); /* LCDD20 */ |
| 374 | at91_set_B_periph(AT91_PIN_PC23, 0); /* LCDD21 */ |
| 375 | at91_set_B_periph(AT91_PIN_PC24, 0); /* LCDD22 */ |
| 376 | at91_set_B_periph(AT91_PIN_PC25, 0); /* LCDD23 */ |
| 377 | |
| 378 | lcdc_data = *data; |
| 379 | platform_device_register(&at91_lcdc_device); |
| 380 | } |
| 381 | #else |
| 382 | void __init at91_add_device_lcdc(struct atmel_lcdfb_info *data) {} |
| 383 | #endif |
| 384 | |
| 385 | |
| 386 | /* -------------------------------------------------------------------- |
| 387 | * LEDs |
| 388 | * -------------------------------------------------------------------- */ |
| 389 | |
| 390 | #if defined(CONFIG_LEDS) |
| 391 | u8 at91_leds_cpu; |
| 392 | u8 at91_leds_timer; |
| 393 | |
| 394 | void __init at91_init_leds(u8 cpu_led, u8 timer_led) |
| 395 | { |
| 396 | /* Enable GPIO to access the LEDs */ |
| 397 | at91_set_gpio_output(cpu_led, 1); |
| 398 | at91_set_gpio_output(timer_led, 1); |
| 399 | |
| 400 | at91_leds_cpu = cpu_led; |
| 401 | at91_leds_timer = timer_led; |
| 402 | } |
| 403 | #else |
| 404 | void __init at91_init_leds(u8 cpu_led, u8 timer_led) {} |
| 405 | #endif |
| 406 | |
| 407 | |
| 408 | /* -------------------------------------------------------------------- |
| 409 | * UART |
| 410 | * -------------------------------------------------------------------- */ |
| 411 | |
| 412 | #if defined(CONFIG_SERIAL_ATMEL) |
| 413 | static struct resource dbgu_resources[] = { |
| 414 | [0] = { |
| 415 | .start = AT91_VA_BASE_SYS + AT91_DBGU, |
| 416 | .end = AT91_VA_BASE_SYS + AT91_DBGU + SZ_512 - 1, |
| 417 | .flags = IORESOURCE_MEM, |
| 418 | }, |
| 419 | [1] = { |
| 420 | .start = AT91_ID_SYS, |
| 421 | .end = AT91_ID_SYS, |
| 422 | .flags = IORESOURCE_IRQ, |
| 423 | }, |
| 424 | }; |
| 425 | |
| 426 | static struct atmel_uart_data dbgu_data = { |
| 427 | .use_dma_tx = 0, |
| 428 | .use_dma_rx = 0, /* DBGU not capable of receive DMA */ |
| 429 | .regs = (void __iomem *)(AT91_VA_BASE_SYS + AT91_DBGU), |
| 430 | }; |
| 431 | |
| 432 | static struct platform_device at91sam9rl_dbgu_device = { |
| 433 | .name = "atmel_usart", |
| 434 | .id = 0, |
| 435 | .dev = { |
| 436 | .platform_data = &dbgu_data, |
| 437 | .coherent_dma_mask = 0xffffffff, |
| 438 | }, |
| 439 | .resource = dbgu_resources, |
| 440 | .num_resources = ARRAY_SIZE(dbgu_resources), |
| 441 | }; |
| 442 | |
| 443 | static inline void configure_dbgu_pins(void) |
| 444 | { |
| 445 | at91_set_A_periph(AT91_PIN_PA21, 0); /* DRXD */ |
| 446 | at91_set_A_periph(AT91_PIN_PA22, 1); /* DTXD */ |
| 447 | } |
| 448 | |
| 449 | static struct resource uart0_resources[] = { |
| 450 | [0] = { |
| 451 | .start = AT91SAM9RL_BASE_US0, |
| 452 | .end = AT91SAM9RL_BASE_US0 + SZ_16K - 1, |
| 453 | .flags = IORESOURCE_MEM, |
| 454 | }, |
| 455 | [1] = { |
| 456 | .start = AT91SAM9RL_ID_US0, |
| 457 | .end = AT91SAM9RL_ID_US0, |
| 458 | .flags = IORESOURCE_IRQ, |
| 459 | }, |
| 460 | }; |
| 461 | |
| 462 | static struct atmel_uart_data uart0_data = { |
| 463 | .use_dma_tx = 1, |
| 464 | .use_dma_rx = 1, |
| 465 | }; |
| 466 | |
| 467 | static struct platform_device at91sam9rl_uart0_device = { |
| 468 | .name = "atmel_usart", |
| 469 | .id = 1, |
| 470 | .dev = { |
| 471 | .platform_data = &uart0_data, |
| 472 | .coherent_dma_mask = 0xffffffff, |
| 473 | }, |
| 474 | .resource = uart0_resources, |
| 475 | .num_resources = ARRAY_SIZE(uart0_resources), |
| 476 | }; |
| 477 | |
| 478 | static inline void configure_usart0_pins(void) |
| 479 | { |
| 480 | at91_set_A_periph(AT91_PIN_PA6, 1); /* TXD0 */ |
| 481 | at91_set_A_periph(AT91_PIN_PA7, 0); /* RXD0 */ |
| 482 | at91_set_A_periph(AT91_PIN_PA9, 0); /* RTS0 */ |
| 483 | at91_set_A_periph(AT91_PIN_PA10, 0); /* CTS0 */ |
| 484 | } |
| 485 | |
| 486 | static struct resource uart1_resources[] = { |
| 487 | [0] = { |
| 488 | .start = AT91SAM9RL_BASE_US1, |
| 489 | .end = AT91SAM9RL_BASE_US1 + SZ_16K - 1, |
| 490 | .flags = IORESOURCE_MEM, |
| 491 | }, |
| 492 | [1] = { |
| 493 | .start = AT91SAM9RL_ID_US1, |
| 494 | .end = AT91SAM9RL_ID_US1, |
| 495 | .flags = IORESOURCE_IRQ, |
| 496 | }, |
| 497 | }; |
| 498 | |
| 499 | static struct atmel_uart_data uart1_data = { |
| 500 | .use_dma_tx = 1, |
| 501 | .use_dma_rx = 1, |
| 502 | }; |
| 503 | |
| 504 | static struct platform_device at91sam9rl_uart1_device = { |
| 505 | .name = "atmel_usart", |
| 506 | .id = 2, |
| 507 | .dev = { |
| 508 | .platform_data = &uart1_data, |
| 509 | .coherent_dma_mask = 0xffffffff, |
| 510 | }, |
| 511 | .resource = uart1_resources, |
| 512 | .num_resources = ARRAY_SIZE(uart1_resources), |
| 513 | }; |
| 514 | |
| 515 | static inline void configure_usart1_pins(void) |
| 516 | { |
| 517 | at91_set_A_periph(AT91_PIN_PA11, 1); /* TXD1 */ |
| 518 | at91_set_A_periph(AT91_PIN_PA12, 0); /* RXD1 */ |
| 519 | } |
| 520 | |
| 521 | static struct resource uart2_resources[] = { |
| 522 | [0] = { |
| 523 | .start = AT91SAM9RL_BASE_US2, |
| 524 | .end = AT91SAM9RL_BASE_US2 + SZ_16K - 1, |
| 525 | .flags = IORESOURCE_MEM, |
| 526 | }, |
| 527 | [1] = { |
| 528 | .start = AT91SAM9RL_ID_US2, |
| 529 | .end = AT91SAM9RL_ID_US2, |
| 530 | .flags = IORESOURCE_IRQ, |
| 531 | }, |
| 532 | }; |
| 533 | |
| 534 | static struct atmel_uart_data uart2_data = { |
| 535 | .use_dma_tx = 1, |
| 536 | .use_dma_rx = 1, |
| 537 | }; |
| 538 | |
| 539 | static struct platform_device at91sam9rl_uart2_device = { |
| 540 | .name = "atmel_usart", |
| 541 | .id = 3, |
| 542 | .dev = { |
| 543 | .platform_data = &uart2_data, |
| 544 | .coherent_dma_mask = 0xffffffff, |
| 545 | }, |
| 546 | .resource = uart2_resources, |
| 547 | .num_resources = ARRAY_SIZE(uart2_resources), |
| 548 | }; |
| 549 | |
| 550 | static inline void configure_usart2_pins(void) |
| 551 | { |
| 552 | at91_set_A_periph(AT91_PIN_PA13, 1); /* TXD2 */ |
| 553 | at91_set_A_periph(AT91_PIN_PA14, 0); /* RXD2 */ |
| 554 | } |
| 555 | |
| 556 | static struct resource uart3_resources[] = { |
| 557 | [0] = { |
| 558 | .start = AT91SAM9RL_BASE_US3, |
| 559 | .end = AT91SAM9RL_BASE_US3 + SZ_16K - 1, |
| 560 | .flags = IORESOURCE_MEM, |
| 561 | }, |
| 562 | [1] = { |
| 563 | .start = AT91SAM9RL_ID_US3, |
| 564 | .end = AT91SAM9RL_ID_US3, |
| 565 | .flags = IORESOURCE_IRQ, |
| 566 | }, |
| 567 | }; |
| 568 | |
| 569 | static struct atmel_uart_data uart3_data = { |
| 570 | .use_dma_tx = 1, |
| 571 | .use_dma_rx = 1, |
| 572 | }; |
| 573 | |
| 574 | static struct platform_device at91sam9rl_uart3_device = { |
| 575 | .name = "atmel_usart", |
| 576 | .id = 4, |
| 577 | .dev = { |
| 578 | .platform_data = &uart3_data, |
| 579 | .coherent_dma_mask = 0xffffffff, |
| 580 | }, |
| 581 | .resource = uart3_resources, |
| 582 | .num_resources = ARRAY_SIZE(uart3_resources), |
| 583 | }; |
| 584 | |
| 585 | static inline void configure_usart3_pins(void) |
| 586 | { |
| 587 | at91_set_A_periph(AT91_PIN_PB0, 1); /* TXD3 */ |
| 588 | at91_set_A_periph(AT91_PIN_PB1, 0); /* RXD3 */ |
| 589 | } |
| 590 | |
| 591 | struct platform_device *at91_uarts[ATMEL_MAX_UART]; /* the UARTs to use */ |
| 592 | struct platform_device *atmel_default_console_device; /* the serial console device */ |
| 593 | |
| 594 | void __init at91_init_serial(struct at91_uart_config *config) |
| 595 | { |
| 596 | int i; |
| 597 | |
| 598 | /* Fill in list of supported UARTs */ |
| 599 | for (i = 0; i < config->nr_tty; i++) { |
| 600 | switch (config->tty_map[i]) { |
| 601 | case 0: |
| 602 | configure_usart0_pins(); |
| 603 | at91_uarts[i] = &at91sam9rl_uart0_device; |
| 604 | at91_clock_associate("usart0_clk", &at91sam9rl_uart0_device.dev, "usart"); |
| 605 | break; |
| 606 | case 1: |
| 607 | configure_usart1_pins(); |
| 608 | at91_uarts[i] = &at91sam9rl_uart1_device; |
| 609 | at91_clock_associate("usart1_clk", &at91sam9rl_uart1_device.dev, "usart"); |
| 610 | break; |
| 611 | case 2: |
| 612 | configure_usart2_pins(); |
| 613 | at91_uarts[i] = &at91sam9rl_uart2_device; |
| 614 | at91_clock_associate("usart2_clk", &at91sam9rl_uart2_device.dev, "usart"); |
| 615 | break; |
| 616 | case 3: |
| 617 | configure_usart3_pins(); |
| 618 | at91_uarts[i] = &at91sam9rl_uart3_device; |
| 619 | at91_clock_associate("usart3_clk", &at91sam9rl_uart3_device.dev, "usart"); |
| 620 | break; |
| 621 | case 4: |
| 622 | configure_dbgu_pins(); |
| 623 | at91_uarts[i] = &at91sam9rl_dbgu_device; |
| 624 | at91_clock_associate("mck", &at91sam9rl_dbgu_device.dev, "usart"); |
| 625 | break; |
| 626 | default: |
| 627 | continue; |
| 628 | } |
| 629 | at91_uarts[i]->id = i; /* update ID number to mapped ID */ |
| 630 | } |
| 631 | |
| 632 | /* Set serial console device */ |
| 633 | if (config->console_tty < ATMEL_MAX_UART) |
| 634 | atmel_default_console_device = at91_uarts[config->console_tty]; |
| 635 | if (!atmel_default_console_device) |
| 636 | printk(KERN_INFO "AT91: No default serial console defined.\n"); |
| 637 | } |
| 638 | |
| 639 | void __init at91_add_device_serial(void) |
| 640 | { |
| 641 | int i; |
| 642 | |
| 643 | for (i = 0; i < ATMEL_MAX_UART; i++) { |
| 644 | if (at91_uarts[i]) |
| 645 | platform_device_register(at91_uarts[i]); |
| 646 | } |
| 647 | } |
| 648 | #else |
| 649 | void __init at91_init_serial(struct at91_uart_config *config) {} |
| 650 | void __init at91_add_device_serial(void) {} |
| 651 | #endif |
| 652 | |
| 653 | |
| 654 | /* -------------------------------------------------------------------- */ |
| 655 | |
| 656 | /* |
| 657 | * These devices are always present and don't need any board-specific |
| 658 | * setup. |
| 659 | */ |
| 660 | static int __init at91_add_standard_devices(void) |
| 661 | { |
| 662 | return 0; |
| 663 | } |
| 664 | |
| 665 | arch_initcall(at91_add_standard_devices); |