1/* 2 * linux/arch/arm/mach-omap1/board-osk.c 3 * 4 * Board specific init for OMAP5912 OSK 5 * 6 * Written by Dirk Behme <dirk.behme@de.bosch.com> 7 * 8 * This program is free software; you can redistribute it and/or modify it 9 * under the terms of the GNU General Public License as published by the 10 * Free Software Foundation; either version 2 of the License, or (at your 11 * option) any later version. 12 * 13 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED 14 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 15 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN 16 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 17 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 18 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 19 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON 20 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 22 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 23 * 24 * You should have received a copy of the GNU General Public License along 25 * with this program; if not, write to the Free Software Foundation, Inc., 26 * 675 Mass Ave, Cambridge, MA 02139, USA. 27 */ 28#include <linux/gpio/consumer.h> 29#include <linux/gpio/driver.h> 30#include <linux/gpio/machine.h> 31#include <linux/kernel.h> 32#include <linux/init.h> 33#include <linux/platform_device.h> 34#include <linux/interrupt.h> 35#include <linux/irq.h> 36#include <linux/i2c.h> 37#include <linux/leds.h> 38#include <linux/smc91x.h> 39#include <linux/omapfb.h> 40#include <linux/mtd/mtd.h> 41#include <linux/mtd/partitions.h> 42#include <linux/mtd/physmap.h> 43#include <linux/mfd/tps65010.h> 44#include <linux/platform_data/gpio-omap.h> 45#include <linux/platform_data/omap1_bl.h> 46#include <linux/soc/ti/omap1-io.h> 47 48#include <asm/mach-types.h> 49#include <asm/mach/arch.h> 50#include <asm/mach/map.h> 51 52#include "tc.h" 53#include "flash.h" 54#include "mux.h" 55#include "hardware.h" 56#include "usb.h" 57#include "common.h" 58 59/* Name of the GPIO chip used by the OMAP for GPIOs 0..15 */ 60#define OMAP_GPIO_LABEL "gpio-0-15" 61 62/* At OMAP5912 OSK the Ethernet is directly connected to CS1 */ 63#define OMAP_OSK_ETHR_START 0x04800300 64 65/* TPS65010 has four GPIOs. nPG and LED2 can be treated like GPIOs with 66 * alternate pin configurations for hardware-controlled blinking. 67 */ 68#define OSK_TPS_GPIO_USB_PWR_EN 0 69#define OSK_TPS_GPIO_LED_D3 1 70#define OSK_TPS_GPIO_LAN_RESET 2 71#define OSK_TPS_GPIO_DSP_PWR_EN 3 72#define OSK_TPS_GPIO_LED_D9 4 73#define OSK_TPS_GPIO_LED_D2 5 74 75static struct mtd_partition osk_partitions[] = { 76 /* bootloader (U-Boot, etc) in first sector */ 77 { 78 .name = "bootloader", 79 .offset = 0, 80 .size = SZ_128K, 81 .mask_flags = MTD_WRITEABLE, /* force read-only */ 82 }, 83 /* bootloader params in the next sector */ 84 { 85 .name = "params", 86 .offset = MTDPART_OFS_APPEND, 87 .size = SZ_128K, 88 .mask_flags = 0, 89 }, { 90 .name = "kernel", 91 .offset = MTDPART_OFS_APPEND, 92 .size = SZ_2M, 93 .mask_flags = 0 94 }, { 95 .name = "filesystem", 96 .offset = MTDPART_OFS_APPEND, 97 .size = MTDPART_SIZ_FULL, 98 .mask_flags = 0 99 } 100}; 101 102static struct physmap_flash_data osk_flash_data = { 103 .width = 2, 104 .set_vpp = omap1_set_vpp, 105 .parts = osk_partitions, 106 .nr_parts = ARRAY_SIZE(osk_partitions), 107}; 108 109static struct resource osk_flash_resource = { 110 /* this is on CS3, wherever it's mapped */ 111 .flags = IORESOURCE_MEM, 112}; 113 114static struct platform_device osk5912_flash_device = { 115 .name = "physmap-flash", 116 .id = 0, 117 .dev = { 118 .platform_data = &osk_flash_data, 119 }, 120 .num_resources = 1, 121 .resource = &osk_flash_resource, 122}; 123 124static struct smc91x_platdata osk5912_smc91x_info = { 125 .flags = SMC91X_USE_16BIT | SMC91X_NOWAIT, 126 .leda = RPC_LED_100_10, 127 .ledb = RPC_LED_TX_RX, 128}; 129 130static struct resource osk5912_smc91x_resources[] = { 131 [0] = { 132 .start = OMAP_OSK_ETHR_START, /* Physical */ 133 .end = OMAP_OSK_ETHR_START + 0xf, 134 .flags = IORESOURCE_MEM, 135 }, 136 [1] = { 137 .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE, 138 }, 139}; 140 141static struct platform_device osk5912_smc91x_device = { 142 .name = "smc91x", 143 .id = -1, 144 .dev = { 145 .platform_data = &osk5912_smc91x_info, 146 }, 147 .num_resources = ARRAY_SIZE(osk5912_smc91x_resources), 148 .resource = osk5912_smc91x_resources, 149}; 150 151static struct resource osk5912_cf_resources[] = { 152 [0] = { 153 .flags = IORESOURCE_IRQ, 154 }, 155 [1] = { 156 .flags = IORESOURCE_MEM, 157 }, 158}; 159 160static struct platform_device osk5912_cf_device = { 161 .name = "omap_cf", 162 .id = -1, 163 .num_resources = ARRAY_SIZE(osk5912_cf_resources), 164 .resource = osk5912_cf_resources, 165}; 166 167static struct platform_device *osk5912_devices[] __initdata = { 168 &osk5912_flash_device, 169 &osk5912_smc91x_device, 170 &osk5912_cf_device, 171}; 172 173static const struct gpio_led tps_leds[] = { 174 /* NOTE: D9 and D2 have hardware blink support. 175 * Also, D9 requires non-battery power. 176 */ 177 { .name = "d9", .default_trigger = "disk-activity", }, 178 { .name = "d2", }, 179 { .name = "d3", .default_trigger = "heartbeat", }, 180}; 181 182static struct gpiod_lookup_table tps_leds_gpio_table = { 183 .dev_id = "leds-gpio", 184 .table = { 185 /* Use local offsets on TPS65010 */ 186 GPIO_LOOKUP_IDX("tps65010", OSK_TPS_GPIO_LED_D9, NULL, 0, GPIO_ACTIVE_HIGH), 187 GPIO_LOOKUP_IDX("tps65010", OSK_TPS_GPIO_LED_D2, NULL, 1, GPIO_ACTIVE_HIGH), 188 GPIO_LOOKUP_IDX("tps65010", OSK_TPS_GPIO_LED_D3, NULL, 2, GPIO_ACTIVE_LOW), 189 { } 190 }, 191}; 192 193static struct gpio_led_platform_data tps_leds_data = { 194 .num_leds = 3, 195 .leds = tps_leds, 196}; 197 198static struct platform_device osk5912_tps_leds = { 199 .name = "leds-gpio", 200 .id = 0, 201 .dev.platform_data = &tps_leds_data, 202}; 203 204/* The board just hold these GPIOs hogged from setup to teardown */ 205static struct gpio_desc *eth_reset; 206static struct gpio_desc *vdd_dsp; 207 208static int osk_tps_setup(struct i2c_client *client, struct gpio_chip *gc) 209{ 210 struct gpio_desc *d; 211 if (!IS_BUILTIN(CONFIG_TPS65010)) 212 return -ENOSYS; 213 214 /* Set GPIO 1 HIGH to disable VBUS power supply; 215 * OHCI driver powers it up/down as needed. 216 */ 217 d = gpiochip_request_own_desc(gc, OSK_TPS_GPIO_USB_PWR_EN, "n_vbus_en", 218 GPIO_ACTIVE_HIGH, GPIOD_OUT_HIGH); 219 /* Free the GPIO again as the driver will request it */ 220 gpiochip_free_own_desc(d); 221 222 /* Set GPIO 2 high so LED D3 is off by default */ 223 tps65010_set_gpio_out_value(GPIO2, HIGH); 224 225 /* Set GPIO 3 low to take ethernet out of reset */ 226 eth_reset = gpiochip_request_own_desc(gc, OSK_TPS_GPIO_LAN_RESET, "smc_reset", 227 GPIO_ACTIVE_HIGH, GPIOD_OUT_LOW); 228 229 /* GPIO4 is VDD_DSP */ 230 vdd_dsp = gpiochip_request_own_desc(gc, OSK_TPS_GPIO_DSP_PWR_EN, "dsp_power", 231 GPIO_ACTIVE_HIGH, GPIOD_OUT_HIGH); 232 /* REVISIT if DSP support isn't configured, power it off ... */ 233 234 /* Let LED1 (D9) blink; leds-gpio may override it */ 235 tps65010_set_led(LED1, BLINK); 236 237 /* Set LED2 off by default */ 238 tps65010_set_led(LED2, OFF); 239 240 /* Enable LOW_PWR handshake */ 241 tps65010_set_low_pwr(ON); 242 243 /* Switch VLDO2 to 3.0V for AIC23 */ 244 tps65010_config_vregs1(TPS_LDO2_ENABLE | TPS_VLDO2_3_0V 245 | TPS_LDO1_ENABLE); 246 247 /* register these three LEDs */ 248 osk5912_tps_leds.dev.parent = &client->dev; 249 gpiod_add_lookup_table(&tps_leds_gpio_table); 250 platform_device_register(&osk5912_tps_leds); 251 252 return 0; 253} 254 255static void osk_tps_teardown(struct i2c_client *client, struct gpio_chip *gc) 256{ 257 gpiochip_free_own_desc(eth_reset); 258 gpiochip_free_own_desc(vdd_dsp); 259} 260 261static struct tps65010_board tps_board = { 262 .outmask = 0x0f, 263 .setup = osk_tps_setup, 264 .teardown = osk_tps_teardown, 265}; 266 267static struct i2c_board_info __initdata osk_i2c_board_info[] = { 268 { 269 /* This device will get the name "i2c-tps65010" */ 270 I2C_BOARD_INFO("tps65010", 0x48), 271 .dev_name = "tps65010", 272 .platform_data = &tps_board, 273 274 }, 275 { 276 I2C_BOARD_INFO("tlv320aic23", 0x1B), 277 }, 278 /* TODO when driver support is ready: 279 * - optionally on Mistral, ov9640 camera sensor at 0x30 280 */ 281}; 282 283static void __init osk_init_smc91x(void) 284{ 285 u32 l; 286 287 /* Check EMIFS wait states to fix errors with SMC_GET_PKT_HDR */ 288 l = omap_readl(EMIFS_CCS(1)); 289 l |= 0x3; 290 omap_writel(l, EMIFS_CCS(1)); 291} 292 293static void __init osk_init_cf(int seg) 294{ 295 struct resource *res = &osk5912_cf_resources[1]; 296 297 omap_cfg_reg(M7_1610_GPIO62); 298 299 switch (seg) { 300 /* NOTE: CS0 could be configured too ... */ 301 case 1: 302 res->start = OMAP_CS1_PHYS; 303 break; 304 case 2: 305 res->start = OMAP_CS2_PHYS; 306 break; 307 case 3: 308 res->start = omap_cs3_phys(); 309 break; 310 } 311 312 res->end = res->start + SZ_8K - 1; 313 osk5912_cf_device.dev.platform_data = (void *)(uintptr_t)seg; 314 315 /* NOTE: better EMIFS setup might support more cards; but the 316 * TRM only shows how to affect regular flash signals, not their 317 * CF/PCMCIA variants... 318 */ 319 pr_debug("%s: cs%d, previous ccs %08x acs %08x\n", __func__, 320 seg, omap_readl(EMIFS_CCS(seg)), omap_readl(EMIFS_ACS(seg))); 321 omap_writel(0x0004a1b3, EMIFS_CCS(seg)); /* synch mode 4 etc */ 322 omap_writel(0x00000000, EMIFS_ACS(seg)); /* OE hold/setup */ 323} 324 325static struct gpiod_lookup_table osk_usb_gpio_table = { 326 .dev_id = "ohci", 327 .table = { 328 /* Power GPIO on the I2C-attached TPS65010 */ 329 GPIO_LOOKUP("tps65010", OSK_TPS_GPIO_USB_PWR_EN, "power", 330 GPIO_ACTIVE_HIGH), 331 GPIO_LOOKUP(OMAP_GPIO_LABEL, 9, "overcurrent", 332 GPIO_ACTIVE_HIGH), 333 { } 334 }, 335}; 336 337static struct omap_usb_config osk_usb_config __initdata = { 338 /* has usb host connector (A) ... for development it can also 339 * be used, with a NONSTANDARD gender-bending cable/dongle, as 340 * a peripheral. 341 */ 342#if IS_ENABLED(CONFIG_USB_OMAP) 343 .register_dev = 1, 344 .hmc_mode = 0, 345#else 346 .register_host = 1, 347 .hmc_mode = 16, 348 .rwc = 1, 349#endif 350 .pins[0] = 2, 351}; 352 353#define EMIFS_CS3_VAL (0x88013141) 354 355static struct gpiod_lookup_table osk_irq_gpio_table = { 356 .dev_id = NULL, 357 .table = { 358 /* GPIO used for SMC91x IRQ */ 359 GPIO_LOOKUP(OMAP_GPIO_LABEL, 0, "smc_irq", 360 GPIO_ACTIVE_HIGH), 361 /* GPIO used for CF IRQ */ 362 GPIO_LOOKUP("gpio-48-63", 14, "cf_irq", 363 GPIO_ACTIVE_HIGH), 364 /* GPIO used by the TPS65010 chip */ 365 GPIO_LOOKUP("mpuio", 1, "tps65010", 366 GPIO_ACTIVE_HIGH), 367 /* GPIOs used for serial wakeup IRQs */ 368 GPIO_LOOKUP_IDX("gpio-32-47", 5, "wakeup", 0, 369 GPIO_ACTIVE_HIGH), 370 GPIO_LOOKUP_IDX("gpio-16-31", 2, "wakeup", 1, 371 GPIO_ACTIVE_HIGH), 372 GPIO_LOOKUP_IDX("gpio-48-63", 1, "wakeup", 2, 373 GPIO_ACTIVE_HIGH), 374 { } 375 }, 376}; 377 378static void __init osk_init(void) 379{ 380 struct gpio_desc *d; 381 u32 l; 382 383 osk_init_smc91x(); 384 osk_init_cf(2); /* CS2 */ 385 386 /* Workaround for wrong CS3 (NOR flash) timing 387 * There are some U-Boot versions out there which configure 388 * wrong CS3 memory timings. This mainly leads to CRC 389 * or similar errors if you use NOR flash (e.g. with JFFS2) 390 */ 391 l = omap_readl(EMIFS_CCS(3)); 392 if (l != EMIFS_CS3_VAL) 393 omap_writel(EMIFS_CS3_VAL, EMIFS_CCS(3)); 394 395 osk_flash_resource.end = osk_flash_resource.start = omap_cs3_phys(); 396 osk_flash_resource.end += SZ_32M - 1; 397 398 /* 399 * Add the GPIOs to be used as IRQs and immediately look them up 400 * to be passed as an IRQ resource. This is ugly but should work 401 * until the day we convert to device tree. 402 */ 403 gpiod_add_lookup_table(&osk_irq_gpio_table); 404 405 d = gpiod_get(NULL, "smc_irq", GPIOD_IN); 406 if (IS_ERR(d)) { 407 pr_err("Unable to get SMC IRQ GPIO descriptor\n"); 408 } else { 409 irq_set_irq_type(gpiod_to_irq(d), IRQ_TYPE_EDGE_RISING); 410 osk5912_smc91x_resources[1] = DEFINE_RES_IRQ(gpiod_to_irq(d)); 411 } 412 413 d = gpiod_get(NULL, "cf_irq", GPIOD_IN); 414 if (IS_ERR(d)) { 415 pr_err("Unable to get CF IRQ GPIO descriptor\n"); 416 } else { 417 /* the CF I/O IRQ is really active-low */ 418 irq_set_irq_type(gpiod_to_irq(d), IRQ_TYPE_EDGE_FALLING); 419 osk5912_cf_resources[0] = DEFINE_RES_IRQ(gpiod_to_irq(d)); 420 } 421 422 platform_add_devices(osk5912_devices, ARRAY_SIZE(osk5912_devices)); 423 424 l = omap_readl(USB_TRANSCEIVER_CTRL); 425 l |= (3 << 1); 426 omap_writel(l, USB_TRANSCEIVER_CTRL); 427 428 gpiod_add_lookup_table(&osk_usb_gpio_table); 429 omap1_usb_init(&osk_usb_config); 430 431 omap_serial_init(); 432 433 /* irq for tps65010 chip */ 434 /* bootloader effectively does: omap_cfg_reg(U19_1610_MPUIO1); */ 435 d = gpiod_get(NULL, "tps65010", GPIOD_IN); 436 if (IS_ERR(d)) 437 pr_err("Unable to get TPS65010 IRQ GPIO descriptor\n"); 438 else 439 osk_i2c_board_info[0].irq = gpiod_to_irq(d); 440 omap_register_i2c_bus(1, 400, osk_i2c_board_info, 441 ARRAY_SIZE(osk_i2c_board_info)); 442} 443 444MACHINE_START(OMAP_OSK, "TI-OSK") 445 /* Maintainer: Dirk Behme <dirk.behme@de.bosch.com> */ 446 .atag_offset = 0x100, 447 .map_io = omap1_map_io, 448 .init_early = omap1_init_early, 449 .init_irq = omap1_init_irq, 450 .init_machine = osk_init, 451 .init_late = omap1_init_late, 452 .init_time = omap1_timer_init, 453 .restart = omap1_restart, 454MACHINE_END 455