arch/arm/mach-omap1/board-osk.c

   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
  75 static 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
 102 static 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
 109 static struct resource osk_flash_resource = {
 110         /* this is on CS3, wherever it's mapped */
 111         .flags          = IORESOURCE_MEM,
 112 };
 113
 114 static 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
 124 static 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
 130 static 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
 141 static 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
 151 static struct resource osk5912_cf_resources[] = {
 152         [0] = {
 153                 .flags  = IORESOURCE_IRQ,
 154         },
 155         [1] = {
 156                 .flags = IORESOURCE_MEM,
 157         },
 158 };
 159
 160 static 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
 167 static struct platform_device *osk5912_devices[] __initdata = {
 168         &osk5912_flash_device,
 169         &osk5912_smc91x_device,
 170         &osk5912_cf_device,
 171 };
 172
 173 static 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
 182 static 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
 193 static struct gpio_led_platform_data tps_leds_data = {
 194         .num_leds       = 3,
 195         .leds           = tps_leds,
 196 };
 197
 198 static 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 */
 205 static struct gpio_desc *eth_reset;
 206 static struct gpio_desc *vdd_dsp;
 207
 208 static 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
 255 static 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
 261 static struct tps65010_board tps_board = {
 262         .outmask        = 0x0f,
 263         .setup          = osk_tps_setup,
 264         .teardown       = osk_tps_teardown,
 265 };
 266
 267 static 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
 283 static 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
 293 static 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
 325 static 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
 337 static 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
 355 static 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
 378 static 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
 444 MACHINE_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,
 454 MACHINE_END