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
  33 #include <asm/mach/arch.h>
  34 #include <asm/mach-types.h>
  35 #include <asm/mach/time.h>
  36
  37 #include "common.h"
  38 #include "devices-imx27.h"
  39 #include "hardware.h"
  40 #include "iomux-mx27.h"
  41 #include "ulpi.h"
  42
  43 #define OTG_PHY_CS_GPIO (GPIO_PORTB + 23)
  44 #define USBH2_PHY_CS_GPIO (GPIO_PORTB + 24)
  45 #define SPI1_SS0 (GPIO_PORTD + 28)
  46 #define SPI1_SS1 (GPIO_PORTD + 27)
  47 #define SD2_CD (GPIO_PORTC + 29)
  48
  49 static const int pca100_pins[] __initconst = {
  50         /* UART1 */
  51         PE12_PF_UART1_TXD,
  52         PE13_PF_UART1_RXD,
  53         PE14_PF_UART1_CTS,
  54         PE15_PF_UART1_RTS,
  55         /* SDHC */
  56         PB4_PF_SD2_D0,
  57         PB5_PF_SD2_D1,
  58         PB6_PF_SD2_D2,
  59         PB7_PF_SD2_D3,
  60         PB8_PF_SD2_CMD,
  61         PB9_PF_SD2_CLK,
  62         SD2_CD | GPIO_GPIO | GPIO_IN,
  63         /* FEC */
  64         PD0_AIN_FEC_TXD0,
  65         PD1_AIN_FEC_TXD1,
  66         PD2_AIN_FEC_TXD2,
  67         PD3_AIN_FEC_TXD3,
  68         PD4_AOUT_FEC_RX_ER,
  69         PD5_AOUT_FEC_RXD1,
  70         PD6_AOUT_FEC_RXD2,
  71         PD7_AOUT_FEC_RXD3,
  72         PD8_AF_FEC_MDIO,
  73         PD9_AIN_FEC_MDC,
  74         PD10_AOUT_FEC_CRS,
  75         PD11_AOUT_FEC_TX_CLK,
  76         PD12_AOUT_FEC_RXD0,
  77         PD13_AOUT_FEC_RX_DV,
  78         PD14_AOUT_FEC_RX_CLK,
  79         PD15_AOUT_FEC_COL,
  80         PD16_AIN_FEC_TX_ER,
  81         PF23_AIN_FEC_TX_EN,
  82         /* SSI1 */
  83         PC20_PF_SSI1_FS,
  84         PC21_PF_SSI1_RXD,
  85         PC22_PF_SSI1_TXD,
  86         PC23_PF_SSI1_CLK,
  87         /* onboard I2C */
  88         PC5_PF_I2C2_SDA,
  89         PC6_PF_I2C2_SCL,
  90         /* external I2C */
  91         PD17_PF_I2C_DATA,
  92         PD18_PF_I2C_CLK,
  93         /* SPI1 */
  94         PD25_PF_CSPI1_RDY,
  95         PD29_PF_CSPI1_SCLK,
  96         PD30_PF_CSPI1_MISO,
  97         PD31_PF_CSPI1_MOSI,
  98         /* OTG */
  99         OTG_PHY_CS_GPIO | GPIO_GPIO | GPIO_OUT,
 100         PC7_PF_USBOTG_DATA5,
 101         PC8_PF_USBOTG_DATA6,
 102         PC9_PF_USBOTG_DATA0,
 103         PC10_PF_USBOTG_DATA2,
 104         PC11_PF_USBOTG_DATA1,
 105         PC12_PF_USBOTG_DATA4,
 106         PC13_PF_USBOTG_DATA3,
 107         PE0_PF_USBOTG_NXT,
 108         PE1_PF_USBOTG_STP,
 109         PE2_PF_USBOTG_DIR,
 110         PE24_PF_USBOTG_CLK,
 111         PE25_PF_USBOTG_DATA7,
 112         /* USBH2 */
 113         USBH2_PHY_CS_GPIO | GPIO_GPIO | GPIO_OUT,
 114         PA0_PF_USBH2_CLK,
 115         PA1_PF_USBH2_DIR,
 116         PA2_PF_USBH2_DATA7,
 117         PA3_PF_USBH2_NXT,
 118         PA4_PF_USBH2_STP,
 119         PD19_AF_USBH2_DATA4,
 120         PD20_AF_USBH2_DATA3,
 121         PD21_AF_USBH2_DATA6,
 122         PD22_AF_USBH2_DATA0,
 123         PD23_AF_USBH2_DATA2,
 124         PD24_AF_USBH2_DATA1,
 125         PD26_AF_USBH2_DATA5,
 126         /* display */
 127         PA5_PF_LSCLK,
 128         PA6_PF_LD0,
 129         PA7_PF_LD1,
 130         PA8_PF_LD2,
 131         PA9_PF_LD3,
 132         PA10_PF_LD4,
 133         PA11_PF_LD5,
 134         PA12_PF_LD6,
 135         PA13_PF_LD7,
 136         PA14_PF_LD8,
 137         PA15_PF_LD9,
 138         PA16_PF_LD10,
 139         PA17_PF_LD11,
 140         PA18_PF_LD12,
 141         PA19_PF_LD13,
 142         PA20_PF_LD14,
 143         PA21_PF_LD15,
 144         PA22_PF_LD16,
 145         PA23_PF_LD17,
 146         PA26_PF_PS,
 147         PA28_PF_HSYNC,
 148         PA29_PF_VSYNC,
 149         PA31_PF_OE_ACD,
 150         /* free GPIO */
 151         GPIO_PORTC | 31 | GPIO_GPIO | GPIO_IN, /* GPIO0_IRQ */
 152         GPIO_PORTC | 25 | GPIO_GPIO | GPIO_IN, /* GPIO1_IRQ */
 153         GPIO_PORTE | 5 | GPIO_GPIO | GPIO_IN, /* GPIO2_IRQ */
 154 };
 155
 156 static const struct imxuart_platform_data uart_pdata __initconst = {
 157         .flags = IMXUART_HAVE_RTSCTS,
 158 };
 159
 160 static const struct mxc_nand_platform_data
 161 pca100_nand_board_info __initconst = {
 162         .width = 1,
 163         .hw_ecc = 1,
 164 };
 165
 166 static const struct imxi2c_platform_data pca100_i2c1_data __initconst = {
 167         .bitrate = 100000,
 168 };
 169
 170 static struct at24_platform_data board_eeprom = {
 171         .byte_len = 4096,
 172         .page_size = 32,
 173         .flags = AT24_FLAG_ADDR16,
 174 };
 175
 176 static struct i2c_board_info pca100_i2c_devices[] = {
 177         {
 178                 I2C_BOARD_INFO("at24", 0x52), /* E0=0, E1=1, E2=0 */
 179                 .platform_data = &board_eeprom,
 180         }, {
 181                 I2C_BOARD_INFO("pcf8563", 0x51),
 182         }, {
 183                 I2C_BOARD_INFO("lm75", 0x4a),
 184         }
 185 };
 186
 187 static struct spi_eeprom at25320 = {
 188         .name           = "at25320an",
 189         .byte_len       = 4096,
 190         .page_size      = 32,
 191         .flags          = EE_ADDR2,
 192 };
 193
 194 static struct spi_board_info pca100_spi_board_info[] __initdata = {
 195         {
 196                 .modalias = "at25",
 197                 .max_speed_hz = 30000,
 198                 .bus_num = 0,
 199                 .chip_select = 1,
 200                 .platform_data = &at25320,
 201         },
 202 };
 203
 204 static int pca100_spi_cs[] = {SPI1_SS0, SPI1_SS1};
 205
 206 static const struct spi_imx_master pca100_spi0_data __initconst = {
 207         .chipselect     = pca100_spi_cs,
 208         .num_chipselect = ARRAY_SIZE(pca100_spi_cs),
 209 };
 210
 211 static void pca100_ac97_warm_reset(struct snd_ac97 *ac97)
 212 {
 213         mxc_gpio_mode(GPIO_PORTC | 20 | GPIO_GPIO | GPIO_OUT);
 214         gpio_set_value(GPIO_PORTC + 20, 1);
 215         udelay(2);
 216         gpio_set_value(GPIO_PORTC + 20, 0);
 217         mxc_gpio_mode(PC20_PF_SSI1_FS);
 218         msleep(2);
 219 }
 220
 221 static void pca100_ac97_cold_reset(struct snd_ac97 *ac97)
 222 {
 223         mxc_gpio_mode(GPIO_PORTC | 20 | GPIO_GPIO | GPIO_OUT);  /* FS */
 224         gpio_set_value(GPIO_PORTC + 20, 0);
 225         mxc_gpio_mode(GPIO_PORTC | 22 | GPIO_GPIO | GPIO_OUT);  /* TX */
 226         gpio_set_value(GPIO_PORTC + 22, 0);
 227         mxc_gpio_mode(GPIO_PORTC | 28 | GPIO_GPIO | GPIO_OUT);  /* reset */
 228         gpio_set_value(GPIO_PORTC + 28, 0);
 229         udelay(10);
 230         gpio_set_value(GPIO_PORTC + 28, 1);
 231         mxc_gpio_mode(PC20_PF_SSI1_FS);
 232         mxc_gpio_mode(PC22_PF_SSI1_TXD);
 233         msleep(2);
 234 }
 235
 236 static const struct imx_ssi_platform_data pca100_ssi_pdata __initconst = {
 237         .ac97_reset             = pca100_ac97_cold_reset,
 238         .ac97_warm_reset        = pca100_ac97_warm_reset,
 239         .flags                  = IMX_SSI_USE_AC97,
 240 };
 241
 242 static int pca100_sdhc2_init(struct device *dev, irq_handler_t detect_irq,
 243                 void *data)
 244 {
 245         int ret;
 246
 247         ret = request_irq(gpio_to_irq(IMX_GPIO_NR(3, 29)), detect_irq,
 248                           IRQF_DISABLED | IRQF_TRIGGER_FALLING,
 249                           "imx-mmc-detect", data);
 250         if (ret)
 251                 printk(KERN_ERR
 252                         "pca100: Failed to reuest irq for sd/mmc detection\n");
 253
 254         return ret;
 255 }
 256
 257 static void pca100_sdhc2_exit(struct device *dev, void *data)
 258 {
 259         free_irq(gpio_to_irq(IMX_GPIO_NR(3, 29)), data);
 260 }
 261
 262 static const struct imxmmc_platform_data sdhc_pdata __initconst = {
 263         .init = pca100_sdhc2_init,
 264         .exit = pca100_sdhc2_exit,
 265 };
 266
 267 static int otg_phy_init(struct platform_device *pdev)
 268 {
 269         gpio_set_value(OTG_PHY_CS_GPIO, 0);
 270
 271         mdelay(10);
 272
 273         return mx27_initialize_usb_hw(pdev->id, MXC_EHCI_INTERFACE_DIFF_UNI);
 274 }
 275
 276 static struct mxc_usbh_platform_data otg_pdata __initdata = {
 277         .init   = otg_phy_init,
 278         .portsc = MXC_EHCI_MODE_ULPI,
 279 };
 280
 281 static int usbh2_phy_init(struct platform_device *pdev)
 282 {
 283         gpio_set_value(USBH2_PHY_CS_GPIO, 0);
 284
 285         mdelay(10);
 286
 287         return mx27_initialize_usb_hw(pdev->id, MXC_EHCI_INTERFACE_DIFF_UNI);
 288 }
 289
 290 static struct mxc_usbh_platform_data usbh2_pdata __initdata = {
 291         .init   = usbh2_phy_init,
 292         .portsc = MXC_EHCI_MODE_ULPI,
 293 };
 294
 295 static const struct fsl_usb2_platform_data otg_device_pdata __initconst = {
 296         .operating_mode = FSL_USB2_DR_DEVICE,
 297         .phy_mode       = FSL_USB2_PHY_ULPI,
 298 };
 299
 300 static bool otg_mode_host __initdata;
 301
 302 static int __init pca100_otg_mode(char *options)
 303 {
 304         if (!strcmp(options, "host"))
 305                 otg_mode_host = true;
 306         else if (!strcmp(options, "device"))
 307                 otg_mode_host = false;
 308         else
 309                 pr_info("otg_mode neither \"host\" nor \"device\". "
 310                         "Defaulting to device\n");
 311         return 1;
 312 }
 313 __setup("otg_mode=", pca100_otg_mode);
 314
 315 /* framebuffer info */
 316 static struct imx_fb_videomode pca100_fb_modes[] = {
 317         {
 318                 .mode = {
 319                         .name           = "EMERGING-ETV570G0DHU",
 320                         .refresh        = 60,
 321                         .xres           = 640,
 322                         .yres           = 480,
 323                         .pixclock       = 39722, /* in ps (25.175 MHz) */
 324                         .hsync_len      = 30,
 325                         .left_margin    = 114,
 326                         .right_margin   = 16,
 327                         .vsync_len      = 3,
 328                         .upper_margin   = 32,
 329                         .lower_margin   = 0,
 330                 },
 331                 /*
 332                  * TFT
 333                  * Pixel pol active high
 334                  * HSYNC active low
 335                  * VSYNC active low
 336                  * use HSYNC for ACD count
 337                  * line clock disable while idle
 338                  * always enable line clock even if no data
 339                  */
 340                 .pcr = 0xf0c08080,
 341                 .bpp = 16,
 342         },
 343 };
 344
 345 static const struct imx_fb_platform_data pca100_fb_data __initconst = {
 346         .mode = pca100_fb_modes,
 347         .num_modes = ARRAY_SIZE(pca100_fb_modes),
 348
 349         .pwmr           = 0x00A903FF,
 350         .lscr1          = 0x00120300,
 351         .dmacr          = 0x00020010,
 352 };
 353
 354 static void __init pca100_init(void)
 355 {
 356         int ret;
 357
 358         imx27_soc_init();
 359
 360         ret = mxc_gpio_setup_multiple_pins(pca100_pins,
 361                         ARRAY_SIZE(pca100_pins), "PCA100");
 362         if (ret)
 363                 printk(KERN_ERR "pca100: Failed to setup pins (%d)\n", ret);
 364
 365         imx27_add_imx_ssi(0, &pca100_ssi_pdata);
 366
 367         imx27_add_imx_uart0(&uart_pdata);
 368
 369         imx27_add_mxc_mmc(1, &sdhc_pdata);
 370
 371         imx27_add_mxc_nand(&pca100_nand_board_info);
 372
 373         /* only the i2c master 1 is used on this CPU card */
 374         i2c_register_board_info(1, pca100_i2c_devices,
 375                                 ARRAY_SIZE(pca100_i2c_devices));
 376
 377         imx27_add_imx_i2c(1, &pca100_i2c1_data);
 378
 379         mxc_gpio_mode(GPIO_PORTD | 28 | GPIO_GPIO | GPIO_IN);
 380         mxc_gpio_mode(GPIO_PORTD | 27 | GPIO_GPIO | GPIO_IN);
 381         spi_register_board_info(pca100_spi_board_info,
 382                                 ARRAY_SIZE(pca100_spi_board_info));
 383         imx27_add_spi_imx0(&pca100_spi0_data);
 384
 385         gpio_request(OTG_PHY_CS_GPIO, "usb-otg-cs");
 386         gpio_direction_output(OTG_PHY_CS_GPIO, 1);
 387         gpio_request(USBH2_PHY_CS_GPIO, "usb-host2-cs");
 388         gpio_direction_output(USBH2_PHY_CS_GPIO, 1);
 389
 390         if (otg_mode_host) {
 391                 otg_pdata.otg = imx_otg_ulpi_create(ULPI_OTG_DRVVBUS |
 392                                 ULPI_OTG_DRVVBUS_EXT);
 393
 394                 if (otg_pdata.otg)
 395                         imx27_add_mxc_ehci_otg(&otg_pdata);
 396         } else {
 397                 gpio_set_value(OTG_PHY_CS_GPIO, 0);
 398                 imx27_add_fsl_usb2_udc(&otg_device_pdata);
 399         }
 400
 401         usbh2_pdata.otg = otg_ulpi_create(&mxc_ulpi_access_ops,
 402                                 ULPI_OTG_DRVVBUS | ULPI_OTG_DRVVBUS_EXT);
 403
 404         if (usbh2_pdata.otg)
 405                 imx27_add_mxc_ehci_hs(2, &usbh2_pdata);
 406
 407         imx27_add_imx_fb(&pca100_fb_data);
 408
 409         imx27_add_fec(NULL);
 410         imx27_add_imx2_wdt();
 411         imx27_add_mxc_w1();
 412 }
 413
 414 static void __init pca100_timer_init(void)
 415 {
 416         mx27_clocks_init(26000000);
 417 }
 418
 419 static struct sys_timer pca100_timer = {
 420         .init = pca100_timer_init,
 421 };
 422
 423 MACHINE_START(PCA100, "phyCARD-i.MX27")
 424         .atag_offset = 0x100,
 425         .map_io = mx27_map_io,
 426         .init_early = imx27_init_early,
 427         .init_irq = mx27_init_irq,
 428         .handle_irq = imx27_handle_irq,
 429         .init_machine = pca100_init,
 430         .timer = &pca100_timer,
 431         .restart        = mxc_restart,
 432 MACHINE_END