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 <mach/common.h>
  36 #include <mach/hardware.h>
  37 #include <mach/iomux-mx27.h>
  38 #include <asm/mach/time.h>
  39 #include <mach/audmux.h>
  40 #include <mach/mxc_nand.h>
  41 #include <mach/irqs.h>
  42 #include <mach/ulpi.h>
  43
  44 #include "devices-imx27.h"
  45
  46 #define OTG_PHY_CS_GPIO (GPIO_PORTB + 23)
  47 #define USBH2_PHY_CS_GPIO (GPIO_PORTB + 24)
  48 #define SPI1_SS0 (GPIO_PORTD + 28)
  49 #define SPI1_SS1 (GPIO_PORTD + 27)
  50 #define SD2_CD (GPIO_PORTC + 29)
  51
  52 static const int pca100_pins[] __initconst = {
  53         /* UART1 */
  54         PE12_PF_UART1_TXD,
  55         PE13_PF_UART1_RXD,
  56         PE14_PF_UART1_CTS,
  57         PE15_PF_UART1_RTS,
  58         /* SDHC */
  59         PB4_PF_SD2_D0,
  60         PB5_PF_SD2_D1,
  61         PB6_PF_SD2_D2,
  62         PB7_PF_SD2_D3,
  63         PB8_PF_SD2_CMD,
  64         PB9_PF_SD2_CLK,
  65         SD2_CD | GPIO_GPIO | GPIO_IN,
  66         /* FEC */
  67         PD0_AIN_FEC_TXD0,
  68         PD1_AIN_FEC_TXD1,
  69         PD2_AIN_FEC_TXD2,
  70         PD3_AIN_FEC_TXD3,
  71         PD4_AOUT_FEC_RX_ER,
  72         PD5_AOUT_FEC_RXD1,
  73         PD6_AOUT_FEC_RXD2,
  74         PD7_AOUT_FEC_RXD3,
  75         PD8_AF_FEC_MDIO,
  76         PD9_AIN_FEC_MDC,
  77         PD10_AOUT_FEC_CRS,
  78         PD11_AOUT_FEC_TX_CLK,
  79         PD12_AOUT_FEC_RXD0,
  80         PD13_AOUT_FEC_RX_DV,
  81         PD14_AOUT_FEC_RX_CLK,
  82         PD15_AOUT_FEC_COL,
  83         PD16_AIN_FEC_TX_ER,
  84         PF23_AIN_FEC_TX_EN,
  85         /* SSI1 */
  86         PC20_PF_SSI1_FS,
  87         PC21_PF_SSI1_RXD,
  88         PC22_PF_SSI1_TXD,
  89         PC23_PF_SSI1_CLK,
  90         /* onboard I2C */
  91         PC5_PF_I2C2_SDA,
  92         PC6_PF_I2C2_SCL,
  93         /* external I2C */
  94         PD17_PF_I2C_DATA,
  95         PD18_PF_I2C_CLK,
  96         /* SPI1 */
  97         PD25_PF_CSPI1_RDY,
  98         PD29_PF_CSPI1_SCLK,
  99         PD30_PF_CSPI1_MISO,
 100         PD31_PF_CSPI1_MOSI,
 101         /* OTG */
 102         OTG_PHY_CS_GPIO | GPIO_GPIO | GPIO_OUT,
 103         PC7_PF_USBOTG_DATA5,
 104         PC8_PF_USBOTG_DATA6,
 105         PC9_PF_USBOTG_DATA0,
 106         PC10_PF_USBOTG_DATA2,
 107         PC11_PF_USBOTG_DATA1,
 108         PC12_PF_USBOTG_DATA4,
 109         PC13_PF_USBOTG_DATA3,
 110         PE0_PF_USBOTG_NXT,
 111         PE1_PF_USBOTG_STP,
 112         PE2_PF_USBOTG_DIR,
 113         PE24_PF_USBOTG_CLK,
 114         PE25_PF_USBOTG_DATA7,
 115         /* USBH2 */
 116         USBH2_PHY_CS_GPIO | GPIO_GPIO | GPIO_OUT,
 117         PA0_PF_USBH2_CLK,
 118         PA1_PF_USBH2_DIR,
 119         PA2_PF_USBH2_DATA7,
 120         PA3_PF_USBH2_NXT,
 121         PA4_PF_USBH2_STP,
 122         PD19_AF_USBH2_DATA4,
 123         PD20_AF_USBH2_DATA3,
 124         PD21_AF_USBH2_DATA6,
 125         PD22_AF_USBH2_DATA0,
 126         PD23_AF_USBH2_DATA2,
 127         PD24_AF_USBH2_DATA1,
 128         PD26_AF_USBH2_DATA5,
 129         /* display */
 130         PA5_PF_LSCLK,
 131         PA6_PF_LD0,
 132         PA7_PF_LD1,
 133         PA8_PF_LD2,
 134         PA9_PF_LD3,
 135         PA10_PF_LD4,
 136         PA11_PF_LD5,
 137         PA12_PF_LD6,
 138         PA13_PF_LD7,
 139         PA14_PF_LD8,
 140         PA15_PF_LD9,
 141         PA16_PF_LD10,
 142         PA17_PF_LD11,
 143         PA18_PF_LD12,
 144         PA19_PF_LD13,
 145         PA20_PF_LD14,
 146         PA21_PF_LD15,
 147         PA22_PF_LD16,
 148         PA23_PF_LD17,
 149         PA26_PF_PS,
 150         PA28_PF_HSYNC,
 151         PA29_PF_VSYNC,
 152         PA31_PF_OE_ACD,
 153         /* free GPIO */
 154         GPIO_PORTC | 31 | GPIO_GPIO | GPIO_IN, /* GPIO0_IRQ */
 155         GPIO_PORTC | 25 | GPIO_GPIO | GPIO_IN, /* GPIO1_IRQ */
 156         GPIO_PORTE | 5 | GPIO_GPIO | GPIO_IN, /* GPIO2_IRQ */
 157 };
 158
 159 static const struct imxuart_platform_data uart_pdata __initconst = {
 160         .flags = IMXUART_HAVE_RTSCTS,
 161 };
 162
 163 static const struct mxc_nand_platform_data
 164 pca100_nand_board_info __initconst = {
 165         .width = 1,
 166         .hw_ecc = 1,
 167 };
 168
 169 static const struct imxi2c_platform_data pca100_i2c1_data __initconst = {
 170         .bitrate = 100000,
 171 };
 172
 173 static struct at24_platform_data board_eeprom = {
 174         .byte_len = 4096,
 175         .page_size = 32,
 176         .flags = AT24_FLAG_ADDR16,
 177 };
 178
 179 static struct i2c_board_info pca100_i2c_devices[] = {
 180         {
 181                 I2C_BOARD_INFO("at24", 0x52), /* E0=0, E1=1, E2=0 */
 182                 .platform_data = &board_eeprom,
 183         }, {
 184                 I2C_BOARD_INFO("pcf8563", 0x51),
 185         }, {
 186                 I2C_BOARD_INFO("lm75", 0x4a),
 187         }
 188 };
 189
 190 static struct spi_eeprom at25320 = {
 191         .name           = "at25320an",
 192         .byte_len       = 4096,
 193         .page_size      = 32,
 194         .flags          = EE_ADDR2,
 195 };
 196
 197 static struct spi_board_info pca100_spi_board_info[] __initdata = {
 198         {
 199                 .modalias = "at25",
 200                 .max_speed_hz = 30000,
 201                 .bus_num = 0,
 202                 .chip_select = 1,
 203                 .platform_data = &at25320,
 204         },
 205 };
 206
 207 static int pca100_spi_cs[] = {SPI1_SS0, SPI1_SS1};
 208
 209 static const struct spi_imx_master pca100_spi0_data __initconst = {
 210         .chipselect     = pca100_spi_cs,
 211         .num_chipselect = ARRAY_SIZE(pca100_spi_cs),
 212 };
 213
 214 static void pca100_ac97_warm_reset(struct snd_ac97 *ac97)
 215 {
 216         mxc_gpio_mode(GPIO_PORTC | 20 | GPIO_GPIO | GPIO_OUT);
 217         gpio_set_value(GPIO_PORTC + 20, 1);
 218         udelay(2);
 219         gpio_set_value(GPIO_PORTC + 20, 0);
 220         mxc_gpio_mode(PC20_PF_SSI1_FS);
 221         msleep(2);
 222 }
 223
 224 static void pca100_ac97_cold_reset(struct snd_ac97 *ac97)
 225 {
 226         mxc_gpio_mode(GPIO_PORTC | 20 | GPIO_GPIO | GPIO_OUT);  /* FS */
 227         gpio_set_value(GPIO_PORTC + 20, 0);
 228         mxc_gpio_mode(GPIO_PORTC | 22 | GPIO_GPIO | GPIO_OUT);  /* TX */
 229         gpio_set_value(GPIO_PORTC + 22, 0);
 230         mxc_gpio_mode(GPIO_PORTC | 28 | GPIO_GPIO | GPIO_OUT);  /* reset */
 231         gpio_set_value(GPIO_PORTC + 28, 0);
 232         udelay(10);
 233         gpio_set_value(GPIO_PORTC + 28, 1);
 234         mxc_gpio_mode(PC20_PF_SSI1_FS);
 235         mxc_gpio_mode(PC22_PF_SSI1_TXD);
 236         msleep(2);
 237 }
 238
 239 static const struct imx_ssi_platform_data pca100_ssi_pdata __initconst = {
 240         .ac97_reset             = pca100_ac97_cold_reset,
 241         .ac97_warm_reset        = pca100_ac97_warm_reset,
 242         .flags                  = IMX_SSI_USE_AC97,
 243 };
 244
 245 static int pca100_sdhc2_init(struct device *dev, irq_handler_t detect_irq,
 246                 void *data)
 247 {
 248         int ret;
 249
 250         ret = request_irq(IRQ_GPIOC(29), detect_irq,
 251                           IRQF_DISABLED | IRQF_TRIGGER_FALLING,
 252                           "imx-mmc-detect", data);
 253         if (ret)
 254                 printk(KERN_ERR
 255                         "pca100: Failed to reuest irq for sd/mmc detection\n");
 256
 257         return ret;
 258 }
 259
 260 static void pca100_sdhc2_exit(struct device *dev, void *data)
 261 {
 262         free_irq(IRQ_GPIOC(29), data);
 263 }
 264
 265 static const struct imxmmc_platform_data sdhc_pdata __initconst = {
 266         .init = pca100_sdhc2_init,
 267         .exit = pca100_sdhc2_exit,
 268 };
 269
 270 #if defined(CONFIG_USB_ULPI)
 271 static int otg_phy_init(struct platform_device *pdev)
 272 {
 273         gpio_set_value(OTG_PHY_CS_GPIO, 0);
 274
 275         mdelay(10);
 276
 277         return mx27_initialize_usb_hw(pdev->id, MXC_EHCI_INTERFACE_DIFF_UNI);
 278 }
 279
 280 static struct mxc_usbh_platform_data otg_pdata __initdata = {
 281         .init   = otg_phy_init,
 282         .portsc = MXC_EHCI_MODE_ULPI,
 283 };
 284
 285 static int usbh2_phy_init(struct platform_device *pdev)
 286 {
 287         gpio_set_value(USBH2_PHY_CS_GPIO, 0);
 288
 289         mdelay(10);
 290
 291         return mx27_initialize_usb_hw(pdev->id, MXC_EHCI_INTERFACE_DIFF_UNI);
 292 }
 293
 294 static struct mxc_usbh_platform_data usbh2_pdata __initdata = {
 295         .init   = usbh2_phy_init,
 296         .portsc = MXC_EHCI_MODE_ULPI,
 297 };
 298 #endif
 299
 300 static const struct fsl_usb2_platform_data otg_device_pdata __initconst = {
 301         .operating_mode = FSL_USB2_DR_DEVICE,
 302         .phy_mode       = FSL_USB2_PHY_ULPI,
 303 };
 304
 305 static int otg_mode_host;
 306
 307 static int __init pca100_otg_mode(char *options)
 308 {
 309         if (!strcmp(options, "host"))
 310                 otg_mode_host = 1;
 311         else if (!strcmp(options, "device"))
 312                 otg_mode_host = 0;
 313         else
 314                 pr_info("otg_mode neither \"host\" nor \"device\". "
 315                         "Defaulting to device\n");
 316         return 0;
 317 }
 318 __setup("otg_mode=", pca100_otg_mode);
 319
 320 /* framebuffer info */
 321 static struct imx_fb_videomode pca100_fb_modes[] = {
 322         {
 323                 .mode = {
 324                         .name           = "EMERGING-ETV570G0DHU",
 325                         .refresh        = 60,
 326                         .xres           = 640,
 327                         .yres           = 480,
 328                         .pixclock       = 39722, /* in ps (25.175 MHz) */
 329                         .hsync_len      = 30,
 330                         .left_margin    = 114,
 331                         .right_margin   = 16,
 332                         .vsync_len      = 3,
 333                         .upper_margin   = 32,
 334                         .lower_margin   = 0,
 335                 },
 336                 /*
 337                  * TFT
 338                  * Pixel pol active high
 339                  * HSYNC active low
 340                  * VSYNC active low
 341                  * use HSYNC for ACD count
 342                  * line clock disable while idle
 343                  * always enable line clock even if no data
 344                  */
 345                 .pcr = 0xf0c08080,
 346                 .bpp = 16,
 347         },
 348 };
 349
 350 static const struct imx_fb_platform_data pca100_fb_data __initconst = {
 351         .mode = pca100_fb_modes,
 352         .num_modes = ARRAY_SIZE(pca100_fb_modes),
 353
 354         .pwmr           = 0x00A903FF,
 355         .lscr1          = 0x00120300,
 356         .dmacr          = 0x00020010,
 357 };
 358
 359 static void __init pca100_init(void)
 360 {
 361         int ret;
 362
 363         /* SSI unit */
 364         mxc_audmux_v1_configure_port(MX27_AUDMUX_HPCR1_SSI0,
 365                                   MXC_AUDMUX_V1_PCR_SYN | /* 4wire mode */
 366                                   MXC_AUDMUX_V1_PCR_TFCSEL(3) |
 367                                   MXC_AUDMUX_V1_PCR_TCLKDIR | /* clock is output */
 368                                   MXC_AUDMUX_V1_PCR_RXDSEL(3));
 369         mxc_audmux_v1_configure_port(3,
 370                                   MXC_AUDMUX_V1_PCR_SYN | /* 4wire mode */
 371                                   MXC_AUDMUX_V1_PCR_TFCSEL(0) |
 372                                   MXC_AUDMUX_V1_PCR_TFSDIR |
 373                                   MXC_AUDMUX_V1_PCR_RXDSEL(0));
 374
 375         ret = mxc_gpio_setup_multiple_pins(pca100_pins,
 376                         ARRAY_SIZE(pca100_pins), "PCA100");
 377         if (ret)
 378                 printk(KERN_ERR "pca100: Failed to setup pins (%d)\n", ret);
 379
 380         imx27_add_imx_ssi(0, &pca100_ssi_pdata);
 381
 382         imx27_add_imx_uart0(&uart_pdata);
 383
 384         imx27_add_mxc_mmc(1, &sdhc_pdata);
 385
 386         imx27_add_mxc_nand(&pca100_nand_board_info);
 387
 388         /* only the i2c master 1 is used on this CPU card */
 389         i2c_register_board_info(1, pca100_i2c_devices,
 390                                 ARRAY_SIZE(pca100_i2c_devices));
 391
 392         imx27_add_imx_i2c(1, &pca100_i2c1_data);
 393
 394         mxc_gpio_mode(GPIO_PORTD | 28 | GPIO_GPIO | GPIO_IN);
 395         mxc_gpio_mode(GPIO_PORTD | 27 | GPIO_GPIO | GPIO_IN);
 396         spi_register_board_info(pca100_spi_board_info,
 397                                 ARRAY_SIZE(pca100_spi_board_info));
 398         imx27_add_spi_imx0(&pca100_spi0_data);
 399
 400         gpio_request(OTG_PHY_CS_GPIO, "usb-otg-cs");
 401         gpio_direction_output(OTG_PHY_CS_GPIO, 1);
 402         gpio_request(USBH2_PHY_CS_GPIO, "usb-host2-cs");
 403         gpio_direction_output(USBH2_PHY_CS_GPIO, 1);
 404
 405 #if defined(CONFIG_USB_ULPI)
 406         if (otg_mode_host) {
 407                 otg_pdata.otg = otg_ulpi_create(&mxc_ulpi_access_ops,
 408                                 ULPI_OTG_DRVVBUS | ULPI_OTG_DRVVBUS_EXT);
 409
 410                 imx27_add_mxc_ehci_otg(&otg_pdata);
 411         }
 412
 413         usbh2_pdata.otg = otg_ulpi_create(&mxc_ulpi_access_ops,
 414                                 ULPI_OTG_DRVVBUS | ULPI_OTG_DRVVBUS_EXT);
 415
 416         imx27_add_mxc_ehci_hs(2, &usbh2_pdata);
 417 #endif
 418         if (!otg_mode_host) {
 419                 gpio_set_value(OTG_PHY_CS_GPIO, 0);
 420                 imx27_add_fsl_usb2_udc(&otg_device_pdata);
 421         }
 422
 423         imx27_add_imx_fb(&pca100_fb_data);
 424
 425         imx27_add_fec(NULL);
 426         imx27_add_imx2_wdt(NULL);
 427         imx27_add_mxc_w1(NULL);
 428 }
 429
 430 static void __init pca100_timer_init(void)
 431 {
 432         mx27_clocks_init(26000000);
 433 }
 434
 435 static struct sys_timer pca100_timer = {
 436         .init = pca100_timer_init,
 437 };
 438
 439 MACHINE_START(PCA100, "phyCARD-i.MX27")
 440         .boot_params = MX27_PHYS_OFFSET + 0x100,
 441         .map_io = mx27_map_io,
 442         .init_early = imx27_init_early,
 443         .init_irq = mx27_init_irq,
 444         .init_machine = pca100_init,
 445         .timer = &pca100_timer,
 446 MACHINE_END