arch/arm/mach-imx/mach-pca100.c

   1 /*
   2  * Copyright 2007 Robert Schwebel <r.schwebel@pengutronix.de>, Pengutronix
   3  * Copyright (C) 2009 Sascha Hauer (kernel@pengutronix.de)
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License
   7  * as published by the Free Software Foundation; either version 2
   8  * of the License, or (at your option) any later version.
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
  17  * MA 02110-1301, USA.
  18  */
  19
  20 #include <linux/platform_device.h>
  21 #include <linux/io.h>
  22 #include <linux/i2c.h>
  23 #include <linux/i2c/at24.h>
  24 #include <linux/dma-mapping.h>
  25 #include <linux/spi/spi.h>
  26 #include <linux/spi/eeprom.h>
  27 #include <linux/irq.h>
  28 #include <linux/delay.h>
  29 #include <linux/gpio.h>
  30 #include <linux/usb/otg.h>
  31 #include <linux/usb/ulpi.h>
  32 #include <linux/fsl_devices.h>
  33
  34 #include <asm/mach/arch.h>
  35 #include <asm/mach-types.h>
  36 #include <mach/common.h>
  37 #include <mach/hardware.h>
  38 #include <mach/iomux-mx27.h>
  39 #include <mach/i2c.h>
  40 #include <asm/mach/time.h>
  41 #if defined(CONFIG_SPI_IMX) || defined(CONFIG_SPI_IMX_MODULE)
  42 #include <mach/spi.h>
  43 #endif
  44 #include <mach/imx-uart.h>
  45 #include <mach/audmux.h>
  46 #include <mach/ssi.h>
  47 #include <mach/mxc_nand.h>
  48 #include <mach/irqs.h>
  49 #include <mach/mmc.h>
  50 #include <mach/mxc_ehci.h>
  51 #include <mach/ulpi.h>
  52
  53 #include "devices.h"
  54
  55 #define OTG_PHY_CS_GPIO (GPIO_PORTB + 23)
  56 #define USBH2_PHY_CS_GPIO (GPIO_PORTB + 24)
  57
  58 static int pca100_pins[] = {
  59         /* UART1 */
  60         PE12_PF_UART1_TXD,
  61         PE13_PF_UART1_RXD,
  62         PE14_PF_UART1_CTS,
  63         PE15_PF_UART1_RTS,
  64         /* SDHC */
  65         PB4_PF_SD2_D0,
  66         PB5_PF_SD2_D1,
  67         PB6_PF_SD2_D2,
  68         PB7_PF_SD2_D3,
  69         PB8_PF_SD2_CMD,
  70         PB9_PF_SD2_CLK,
  71         /* FEC */
  72         PD0_AIN_FEC_TXD0,
  73         PD1_AIN_FEC_TXD1,
  74         PD2_AIN_FEC_TXD2,
  75         PD3_AIN_FEC_TXD3,
  76         PD4_AOUT_FEC_RX_ER,
  77         PD5_AOUT_FEC_RXD1,
  78         PD6_AOUT_FEC_RXD2,
  79         PD7_AOUT_FEC_RXD3,
  80         PD8_AF_FEC_MDIO,
  81         PD9_AIN_FEC_MDC,
  82         PD10_AOUT_FEC_CRS,
  83         PD11_AOUT_FEC_TX_CLK,
  84         PD12_AOUT_FEC_RXD0,
  85         PD13_AOUT_FEC_RX_DV,
  86         PD14_AOUT_FEC_RX_CLK,
  87         PD15_AOUT_FEC_COL,
  88         PD16_AIN_FEC_TX_ER,
  89         PF23_AIN_FEC_TX_EN,
  90         /* SSI1 */
  91         PC20_PF_SSI1_FS,
  92         PC21_PF_SSI1_RXD,
  93         PC22_PF_SSI1_TXD,
  94         PC23_PF_SSI1_CLK,
  95         /* onboard I2C */
  96         PC5_PF_I2C2_SDA,
  97         PC6_PF_I2C2_SCL,
  98         /* external I2C */
  99         PD17_PF_I2C_DATA,
 100         PD18_PF_I2C_CLK,
 101         /* SPI1 */
 102         PD25_PF_CSPI1_RDY,
 103         PD29_PF_CSPI1_SCLK,
 104         PD30_PF_CSPI1_MISO,
 105         PD31_PF_CSPI1_MOSI,
 106         /* OTG */
 107         OTG_PHY_CS_GPIO | GPIO_GPIO | GPIO_OUT,
 108         PC7_PF_USBOTG_DATA5,
 109         PC8_PF_USBOTG_DATA6,
 110         PC9_PF_USBOTG_DATA0,
 111         PC10_PF_USBOTG_DATA2,
 112         PC11_PF_USBOTG_DATA1,
 113         PC12_PF_USBOTG_DATA4,
 114         PC13_PF_USBOTG_DATA3,
 115         PE0_PF_USBOTG_NXT,
 116         PE1_PF_USBOTG_STP,
 117         PE2_PF_USBOTG_DIR,
 118         PE24_PF_USBOTG_CLK,
 119         PE25_PF_USBOTG_DATA7,
 120         /* USBH2 */
 121         USBH2_PHY_CS_GPIO | GPIO_GPIO | GPIO_OUT,
 122         PA0_PF_USBH2_CLK,
 123         PA1_PF_USBH2_DIR,
 124         PA2_PF_USBH2_DATA7,
 125         PA3_PF_USBH2_NXT,
 126         PA4_PF_USBH2_STP,
 127         PD19_AF_USBH2_DATA4,
 128         PD20_AF_USBH2_DATA3,
 129         PD21_AF_USBH2_DATA6,
 130         PD22_AF_USBH2_DATA0,
 131         PD23_AF_USBH2_DATA2,
 132         PD24_AF_USBH2_DATA1,
 133         PD26_AF_USBH2_DATA5,
 134 };
 135
 136 static struct imxuart_platform_data uart_pdata = {
 137         .flags = IMXUART_HAVE_RTSCTS,
 138 };
 139
 140 static struct mxc_nand_platform_data pca100_nand_board_info = {
 141         .width = 1,
 142         .hw_ecc = 1,
 143 };
 144
 145 static struct platform_device *platform_devices[] __initdata = {
 146         &mxc_w1_master_device,
 147         &mxc_fec_device,
 148         &mxc_wdt,
 149 };
 150
 151 static struct imxi2c_platform_data pca100_i2c_1_data = {
 152         .bitrate = 100000,
 153 };
 154
 155 static struct at24_platform_data board_eeprom = {
 156         .byte_len = 4096,
 157         .page_size = 32,
 158         .flags = AT24_FLAG_ADDR16,
 159 };
 160
 161 static struct i2c_board_info pca100_i2c_devices[] = {
 162         {
 163                 I2C_BOARD_INFO("at24", 0x52), /* E0=0, E1=1, E2=0 */
 164                 .platform_data = &board_eeprom,
 165         }, {
 166                 I2C_BOARD_INFO("rtc-pcf8563", 0x51),
 167                 .type = "pcf8563"
 168         }, {
 169                 I2C_BOARD_INFO("lm75", 0x4a),
 170                 .type = "lm75"
 171         }
 172 };
 173
 174 #if defined(CONFIG_SPI_IMX) || defined(CONFIG_SPI_IMX_MODULE)
 175 static struct spi_eeprom at25320 = {
 176         .name           = "at25320an",
 177         .byte_len       = 4096,
 178         .page_size      = 32,
 179         .flags          = EE_ADDR2,
 180 };
 181
 182 static struct spi_board_info pca100_spi_board_info[] __initdata = {
 183         {
 184                 .modalias = "at25",
 185                 .max_speed_hz = 30000,
 186                 .bus_num = 0,
 187                 .chip_select = 1,
 188                 .platform_data = &at25320,
 189         },
 190 };
 191
 192 static int pca100_spi_cs[] = {GPIO_PORTD + 28, GPIO_PORTD + 27};
 193
 194 static struct spi_imx_master pca100_spi_0_data = {
 195         .chipselect     = pca100_spi_cs,
 196         .num_chipselect = ARRAY_SIZE(pca100_spi_cs),
 197 };
 198 #endif
 199
 200 static void pca100_ac97_warm_reset(struct snd_ac97 *ac97)
 201 {
 202         mxc_gpio_mode(GPIO_PORTC | 20 | GPIO_GPIO | GPIO_OUT);
 203         gpio_set_value(GPIO_PORTC + 20, 1);
 204         udelay(2);
 205         gpio_set_value(GPIO_PORTC + 20, 0);
 206         mxc_gpio_mode(PC20_PF_SSI1_FS);
 207         msleep(2);
 208 }
 209
 210 static void pca100_ac97_cold_reset(struct snd_ac97 *ac97)
 211 {
 212         mxc_gpio_mode(GPIO_PORTC | 20 | GPIO_GPIO | GPIO_OUT);  /* FS */
 213         gpio_set_value(GPIO_PORTC + 20, 0);
 214         mxc_gpio_mode(GPIO_PORTC | 22 | GPIO_GPIO | GPIO_OUT);  /* TX */
 215         gpio_set_value(GPIO_PORTC + 22, 0);
 216         mxc_gpio_mode(GPIO_PORTC | 28 | GPIO_GPIO | GPIO_OUT);  /* reset */
 217         gpio_set_value(GPIO_PORTC + 28, 0);
 218         udelay(10);
 219         gpio_set_value(GPIO_PORTC + 28, 1);
 220         mxc_gpio_mode(PC20_PF_SSI1_FS);
 221         mxc_gpio_mode(PC22_PF_SSI1_TXD);
 222         msleep(2);
 223 }
 224
 225 static struct imx_ssi_platform_data pca100_ssi_pdata = {
 226         .ac97_reset             = pca100_ac97_cold_reset,
 227         .ac97_warm_reset        = pca100_ac97_warm_reset,
 228         .flags                  = IMX_SSI_USE_AC97,
 229 };
 230
 231 static int pca100_sdhc2_init(struct device *dev, irq_handler_t detect_irq,
 232                 void *data)
 233 {
 234         int ret;
 235
 236         ret = request_irq(IRQ_GPIOC(29), detect_irq,
 237                           IRQF_DISABLED | IRQF_TRIGGER_FALLING,
 238                           "imx-mmc-detect", data);
 239         if (ret)
 240                 printk(KERN_ERR
 241                         "pca100: Failed to reuest irq for sd/mmc detection\n");
 242
 243         return ret;
 244 }
 245
 246 static void pca100_sdhc2_exit(struct device *dev, void *data)
 247 {
 248         free_irq(IRQ_GPIOC(29), data);
 249 }
 250
 251 static struct imxmmc_platform_data sdhc_pdata = {
 252         .init = pca100_sdhc2_init,
 253         .exit = pca100_sdhc2_exit,
 254 };
 255
 256 static int otg_phy_init(struct platform_device *pdev)
 257 {
 258         gpio_set_value(OTG_PHY_CS_GPIO, 0);
 259         return 0;
 260 }
 261
 262 static struct mxc_usbh_platform_data otg_pdata = {
 263         .init   = otg_phy_init,
 264         .portsc = MXC_EHCI_MODE_ULPI,
 265         .flags  = MXC_EHCI_INTERFACE_DIFF_UNI,
 266 };
 267
 268 static int usbh2_phy_init(struct platform_device *pdev)
 269 {
 270         gpio_set_value(USBH2_PHY_CS_GPIO, 0);
 271         return 0;
 272 }
 273
 274 static struct mxc_usbh_platform_data usbh2_pdata = {
 275         .init   = usbh2_phy_init,
 276         .portsc = MXC_EHCI_MODE_ULPI,
 277         .flags  = MXC_EHCI_INTERFACE_DIFF_UNI,
 278 };
 279
 280 static struct fsl_usb2_platform_data otg_device_pdata = {
 281         .operating_mode = FSL_USB2_DR_DEVICE,
 282         .phy_mode       = FSL_USB2_PHY_ULPI,
 283 };
 284
 285 static int otg_mode_host;
 286
 287 static int __init pca100_otg_mode(char *options)
 288 {
 289         if (!strcmp(options, "host"))
 290                 otg_mode_host = 1;
 291         else if (!strcmp(options, "device"))
 292                 otg_mode_host = 0;
 293         else
 294                 pr_info("otg_mode neither \"host\" nor \"device\". "
 295                         "Defaulting to device\n");
 296         return 0;
 297 }
 298 __setup("otg_mode=", pca100_otg_mode);
 299
 300 static void __init pca100_init(void)
 301 {
 302         int ret;
 303
 304         /* SSI unit */
 305         mxc_audmux_v1_configure_port(MX27_AUDMUX_HPCR1_SSI0,
 306                                   MXC_AUDMUX_V1_PCR_SYN | /* 4wire mode */
 307                                   MXC_AUDMUX_V1_PCR_TFCSEL(3) |
 308                                   MXC_AUDMUX_V1_PCR_TCLKDIR | /* clock is output */
 309                                   MXC_AUDMUX_V1_PCR_RXDSEL(3));
 310         mxc_audmux_v1_configure_port(3,
 311                                   MXC_AUDMUX_V1_PCR_SYN | /* 4wire mode */
 312                                   MXC_AUDMUX_V1_PCR_TFCSEL(0) |
 313                                   MXC_AUDMUX_V1_PCR_TFSDIR |
 314                                   MXC_AUDMUX_V1_PCR_RXDSEL(0));
 315
 316         ret = mxc_gpio_setup_multiple_pins(pca100_pins,
 317                         ARRAY_SIZE(pca100_pins), "PCA100");
 318         if (ret)
 319                 printk(KERN_ERR "pca100: Failed to setup pins (%d)\n", ret);
 320
 321         mxc_register_device(&imx_ssi_device0, &pca100_ssi_pdata);
 322
 323         mxc_register_device(&mxc_uart_device0, &uart_pdata);
 324
 325         mxc_gpio_mode(GPIO_PORTC | 29 | GPIO_GPIO | GPIO_IN);
 326         mxc_register_device(&mxc_sdhc_device1, &sdhc_pdata);
 327
 328         mxc_register_device(&imx27_nand_device, &pca100_nand_board_info);
 329
 330         /* only the i2c master 1 is used on this CPU card */
 331         i2c_register_board_info(1, pca100_i2c_devices,
 332                                 ARRAY_SIZE(pca100_i2c_devices));
 333
 334         mxc_register_device(&mxc_i2c_device1, &pca100_i2c_1_data);
 335
 336         mxc_gpio_mode(GPIO_PORTD | 28 | GPIO_GPIO | GPIO_OUT);
 337         mxc_gpio_mode(GPIO_PORTD | 27 | GPIO_GPIO | GPIO_OUT);
 338
 339         /* GPIO0_IRQ */
 340         mxc_gpio_mode(GPIO_PORTC | 31 | GPIO_GPIO | GPIO_IN);
 341         /* GPIO1_IRQ */
 342         mxc_gpio_mode(GPIO_PORTC | 25 | GPIO_GPIO | GPIO_IN);
 343         /* GPIO2_IRQ */
 344         mxc_gpio_mode(GPIO_PORTE | 5 | GPIO_GPIO | GPIO_IN);
 345
 346 #if defined(CONFIG_SPI_IMX) || defined(CONFIG_SPI_IMX_MODULE)
 347         spi_register_board_info(pca100_spi_board_info,
 348                                 ARRAY_SIZE(pca100_spi_board_info));
 349         mxc_register_device(&mxc_spi_device0, &pca100_spi_0_data);
 350 #endif
 351
 352         gpio_request(OTG_PHY_CS_GPIO, "usb-otg-cs");
 353         gpio_direction_output(OTG_PHY_CS_GPIO, 1);
 354         gpio_request(USBH2_PHY_CS_GPIO, "usb-host2-cs");
 355         gpio_direction_output(USBH2_PHY_CS_GPIO, 1);
 356
 357 #if defined(CONFIG_USB_ULPI)
 358         if (otg_mode_host) {
 359                 otg_pdata.otg = otg_ulpi_create(&mxc_ulpi_access_ops,
 360                                 USB_OTG_DRV_VBUS | USB_OTG_DRV_VBUS_EXT);
 361
 362                 mxc_register_device(&mxc_otg_host, &otg_pdata);
 363         }
 364
 365         usbh2_pdata.otg = otg_ulpi_create(&mxc_ulpi_access_ops,
 366                                 USB_OTG_DRV_VBUS | USB_OTG_DRV_VBUS_EXT);
 367
 368         mxc_register_device(&mxc_usbh2, &usbh2_pdata);
 369 #endif
 370         if (!otg_mode_host) {
 371                 gpio_set_value(OTG_PHY_CS_GPIO, 0);
 372                 mxc_register_device(&mxc_otg_udc_device, &otg_device_pdata);
 373         }
 374
 375         platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
 376 }
 377
 378 static void __init pca100_timer_init(void)
 379 {
 380         mx27_clocks_init(26000000);
 381 }
 382
 383 static struct sys_timer pca100_timer = {
 384         .init = pca100_timer_init,
 385 };
 386
 387 MACHINE_START(PCA100, "phyCARD-i.MX27")
 388         .phys_io        = MX27_AIPI_BASE_ADDR,
 389         .io_pg_offst    = ((MX27_AIPI_BASE_ADDR_VIRT) >> 18) & 0xfffc,
 390         .boot_params    = MX27_PHYS_OFFSET + 0x100,
 391         .map_io         = mx27_map_io,
 392         .init_irq       = mx27_init_irq,
 393         .init_machine   = pca100_init,
 394         .timer          = &pca100_timer,
 395 MACHINE_END
 396