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 <[email protected]>
   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.h>
  29 #include <linux/gpio/machine.h>
  30 #include <linux/kernel.h>
  31 #include <linux/init.h>
  32 #include <linux/platform_device.h>
  33 #include <linux/interrupt.h>
  34 #include <linux/irq.h>
  35 #include <linux/i2c.h>
  36 #include <linux/leds.h>
  37 #include <linux/smc91x.h>
  38 #include <linux/omapfb.h>
  39 #include <linux/mtd/mtd.h>
  40 #include <linux/mtd/partitions.h>
  41 #include <linux/mtd/physmap.h>
  42 #include <linux/mfd/tps65010.h>
  43 #include <linux/platform_data/gpio-omap.h>
  44 #include <linux/platform_data/omap1_bl.h>
  45 #include <linux/soc/ti/omap1-io.h>
  46
  47 #include <asm/mach-types.h>
  48 #include <asm/mach/arch.h>
  49 #include <asm/mach/map.h>
  50
  51 #include "tc.h"
  52 #include "flash.h"
  53 #include "mux.h"
  54 #include "hardware.h"
  55 #include "usb.h"
  56 #include "common.h"
  57
  58 /* Name of the GPIO chip used by the OMAP for GPIOs 0..15 */
  59 #define OMAP_GPIO_LABEL         "gpio-0-15"
  60
  61 /* At OMAP5912 OSK the Ethernet is directly connected to CS1 */
  62 #define OMAP_OSK_ETHR_START             0x04800300
  63
  64 /* TPS65010 has four GPIOs.  nPG and LED2 can be treated like GPIOs with
  65  * alternate pin configurations for hardware-controlled blinking.
  66  */
  67 #define OSK_TPS_GPIO_BASE               (OMAP_MAX_GPIO_LINES + 16 /* MPUIO */)
  68 #       define OSK_TPS_GPIO_USB_PWR_EN  (OSK_TPS_GPIO_BASE + 0)
  69 #       define OSK_TPS_GPIO_LED_D3      (OSK_TPS_GPIO_BASE + 1)
  70 #       define OSK_TPS_GPIO_LAN_RESET   (OSK_TPS_GPIO_BASE + 2)
  71 #       define OSK_TPS_GPIO_DSP_PWR_EN  (OSK_TPS_GPIO_BASE + 3)
  72 #       define OSK_TPS_GPIO_LED_D9      (OSK_TPS_GPIO_BASE + 4)
  73 #       define OSK_TPS_GPIO_LED_D2      (OSK_TPS_GPIO_BASE + 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         { .gpio = OSK_TPS_GPIO_LED_D9, .name = "d9",
 178                         .default_trigger = "disk-activity", },
 179         { .gpio = OSK_TPS_GPIO_LED_D2, .name = "d2", },
 180         { .gpio = OSK_TPS_GPIO_LED_D3, .name = "d3", .active_low = 1,
 181                         .default_trigger = "heartbeat", },
 182 };
 183
 184 static struct gpio_led_platform_data tps_leds_data = {
 185         .num_leds       = 3,
 186         .leds           = tps_leds,
 187 };
 188
 189 static struct platform_device osk5912_tps_leds = {
 190         .name                   = "leds-gpio",
 191         .id                     = 0,
 192         .dev.platform_data      = &tps_leds_data,
 193 };
 194
 195 static int osk_tps_setup(struct i2c_client *client, void *context)
 196 {
 197         if (!IS_BUILTIN(CONFIG_TPS65010))
 198                 return -ENOSYS;
 199
 200         /* Set GPIO 1 HIGH to disable VBUS power supply;
 201          * OHCI driver powers it up/down as needed.
 202          */
 203         gpio_request(OSK_TPS_GPIO_USB_PWR_EN, "n_vbus_en");
 204         gpio_direction_output(OSK_TPS_GPIO_USB_PWR_EN, 1);
 205         /* Free the GPIO again as the driver will request it */
 206         gpio_free(OSK_TPS_GPIO_USB_PWR_EN);
 207
 208         /* Set GPIO 2 high so LED D3 is off by default */
 209         tps65010_set_gpio_out_value(GPIO2, HIGH);
 210
 211         /* Set GPIO 3 low to take ethernet out of reset */
 212         gpio_request(OSK_TPS_GPIO_LAN_RESET, "smc_reset");
 213         gpio_direction_output(OSK_TPS_GPIO_LAN_RESET, 0);
 214
 215         /* GPIO4 is VDD_DSP */
 216         gpio_request(OSK_TPS_GPIO_DSP_PWR_EN, "dsp_power");
 217         gpio_direction_output(OSK_TPS_GPIO_DSP_PWR_EN, 1);
 218         /* REVISIT if DSP support isn't configured, power it off ... */
 219
 220         /* Let LED1 (D9) blink; leds-gpio may override it */
 221         tps65010_set_led(LED1, BLINK);
 222
 223         /* Set LED2 off by default */
 224         tps65010_set_led(LED2, OFF);
 225
 226         /* Enable LOW_PWR handshake */
 227         tps65010_set_low_pwr(ON);
 228
 229         /* Switch VLDO2 to 3.0V for AIC23 */
 230         tps65010_config_vregs1(TPS_LDO2_ENABLE | TPS_VLDO2_3_0V
 231                         | TPS_LDO1_ENABLE);
 232
 233         /* register these three LEDs */
 234         osk5912_tps_leds.dev.parent = &client->dev;
 235         platform_device_register(&osk5912_tps_leds);
 236
 237         return 0;
 238 }
 239
 240 static struct tps65010_board tps_board = {
 241         .base           = OSK_TPS_GPIO_BASE,
 242         .outmask        = 0x0f,
 243         .setup          = osk_tps_setup,
 244 };
 245
 246 static struct i2c_board_info __initdata osk_i2c_board_info[] = {
 247         {
 248                 /* This device will get the name "i2c-tps65010" */
 249                 I2C_BOARD_INFO("tps65010", 0x48),
 250                 .dev_name = "tps65010",
 251                 .platform_data  = &tps_board,
 252
 253         },
 254         {
 255                 I2C_BOARD_INFO("tlv320aic23", 0x1B),
 256         },
 257         /* TODO when driver support is ready:
 258          *  - optionally on Mistral, ov9640 camera sensor at 0x30
 259          */
 260 };
 261
 262 static void __init osk_init_smc91x(void)
 263 {
 264         u32 l;
 265
 266         if ((gpio_request(0, "smc_irq")) < 0) {
 267                 printk("Error requesting gpio 0 for smc91x irq\n");
 268                 return;
 269         }
 270
 271         /* Check EMIFS wait states to fix errors with SMC_GET_PKT_HDR */
 272         l = omap_readl(EMIFS_CCS(1));
 273         l |= 0x3;
 274         omap_writel(l, EMIFS_CCS(1));
 275 }
 276
 277 static void __init osk_init_cf(int seg)
 278 {
 279         struct resource *res = &osk5912_cf_resources[1];
 280
 281         omap_cfg_reg(M7_1610_GPIO62);
 282         if ((gpio_request(62, "cf_irq")) < 0) {
 283                 printk("Error requesting gpio 62 for CF irq\n");
 284                 return;
 285         }
 286
 287         switch (seg) {
 288         /* NOTE: CS0 could be configured too ... */
 289         case 1:
 290                 res->start = OMAP_CS1_PHYS;
 291                 break;
 292         case 2:
 293                 res->start = OMAP_CS2_PHYS;
 294                 break;
 295         case 3:
 296                 res->start = omap_cs3_phys();
 297                 break;
 298         }
 299
 300         res->end = res->start + SZ_8K - 1;
 301         osk5912_cf_device.dev.platform_data = (void *)(uintptr_t)seg;
 302
 303         /* NOTE:  better EMIFS setup might support more cards; but the
 304          * TRM only shows how to affect regular flash signals, not their
 305          * CF/PCMCIA variants...
 306          */
 307         pr_debug("%s: cs%d, previous ccs %08x acs %08x\n", __func__,
 308                 seg, omap_readl(EMIFS_CCS(seg)), omap_readl(EMIFS_ACS(seg)));
 309         omap_writel(0x0004a1b3, EMIFS_CCS(seg));        /* synch mode 4 etc */
 310         omap_writel(0x00000000, EMIFS_ACS(seg));        /* OE hold/setup */
 311
 312         /* the CF I/O IRQ is really active-low */
 313         irq_set_irq_type(gpio_to_irq(62), IRQ_TYPE_EDGE_FALLING);
 314 }
 315
 316 static struct gpiod_lookup_table osk_usb_gpio_table = {
 317         .dev_id = "ohci",
 318         .table = {
 319                 /* Power GPIO on the I2C-attached TPS65010 */
 320                 GPIO_LOOKUP("tps65010", 0, "power", GPIO_ACTIVE_HIGH),
 321                 GPIO_LOOKUP(OMAP_GPIO_LABEL, 9, "overcurrent",
 322                             GPIO_ACTIVE_HIGH),
 323         },
 324 };
 325
 326 static struct omap_usb_config osk_usb_config __initdata = {
 327         /* has usb host connector (A) ... for development it can also
 328          * be used, with a NONSTANDARD gender-bending cable/dongle, as
 329          * a peripheral.
 330          */
 331 #if IS_ENABLED(CONFIG_USB_OMAP)
 332         .register_dev   = 1,
 333         .hmc_mode       = 0,
 334 #else
 335         .register_host  = 1,
 336         .hmc_mode       = 16,
 337         .rwc            = 1,
 338 #endif
 339         .pins[0]        = 2,
 340 };
 341
 342 #define EMIFS_CS3_VAL   (0x88013141)
 343
 344 static void __init osk_init(void)
 345 {
 346         u32 l;
 347
 348         osk_init_smc91x();
 349         osk_init_cf(2); /* CS2 */
 350
 351         /* Workaround for wrong CS3 (NOR flash) timing
 352          * There are some U-Boot versions out there which configure
 353          * wrong CS3 memory timings. This mainly leads to CRC
 354          * or similar errors if you use NOR flash (e.g. with JFFS2)
 355          */
 356         l = omap_readl(EMIFS_CCS(3));
 357         if (l != EMIFS_CS3_VAL)
 358                 omap_writel(EMIFS_CS3_VAL, EMIFS_CCS(3));
 359
 360         osk_flash_resource.end = osk_flash_resource.start = omap_cs3_phys();
 361         osk_flash_resource.end += SZ_32M - 1;
 362         osk5912_smc91x_resources[1].start = gpio_to_irq(0);
 363         osk5912_smc91x_resources[1].end = gpio_to_irq(0);
 364         osk5912_cf_resources[0].start = gpio_to_irq(62);
 365         osk5912_cf_resources[0].end = gpio_to_irq(62);
 366         platform_add_devices(osk5912_devices, ARRAY_SIZE(osk5912_devices));
 367
 368         l = omap_readl(USB_TRANSCEIVER_CTRL);
 369         l |= (3 << 1);
 370         omap_writel(l, USB_TRANSCEIVER_CTRL);
 371
 372         gpiod_add_lookup_table(&osk_usb_gpio_table);
 373         omap1_usb_init(&osk_usb_config);
 374
 375         /* irq for tps65010 chip */
 376         /* bootloader effectively does:  omap_cfg_reg(U19_1610_MPUIO1); */
 377         if (gpio_request(OMAP_MPUIO(1), "tps65010") == 0)
 378                 gpio_direction_input(OMAP_MPUIO(1));
 379
 380         omap_serial_init();
 381         osk_i2c_board_info[0].irq = gpio_to_irq(OMAP_MPUIO(1));
 382         omap_register_i2c_bus(1, 400, osk_i2c_board_info,
 383                               ARRAY_SIZE(osk_i2c_board_info));
 384 }
 385
 386 MACHINE_START(OMAP_OSK, "TI-OSK")
 387         /* Maintainer: Dirk Behme <[email protected]> */
 388         .atag_offset    = 0x100,
 389         .map_io         = omap1_map_io,
 390         .init_early     = omap1_init_early,
 391         .init_irq       = omap1_init_irq,
 392         .handle_irq     = omap1_handle_irq,
 393         .init_machine   = osk_init,
 394         .init_late      = omap1_init_late,
 395         .init_time      = omap1_timer_init,
 396         .restart        = omap1_restart,
 397 MACHINE_END