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/irqs.h>
  41 #include <mach/ulpi.h>
  42
  43 #include "devices-imx27.h"
  44
  45 #define OTG_PHY_CS_GPIO (GPIO_PORTB + 23)
  46 #define USBH2_PHY_CS_GPIO (GPIO_PORTB + 24)
  47 #define SPI1_SS0 (GPIO_PORTD + 28)
  48 #define SPI1_SS1 (GPIO_PORTD + 27)
  49 #define SD2_CD (GPIO_PORTC + 29)
  50
  51 static const int pca100_pins[] __initconst = {
  52         /* UART1 */
  53         PE12_PF_UART1_TXD,
  54         PE13_PF_UART1_RXD,
  55         PE14_PF_UART1_CTS,
  56         PE15_PF_UART1_RTS,
  57         /* SDHC */
  58         PB4_PF_SD2_D0,
  59         PB5_PF_SD2_D1,
  60         PB6_PF_SD2_D2,
  61         PB7_PF_SD2_D3,
  62         PB8_PF_SD2_CMD,
  63         PB9_PF_SD2_CLK,
  64         SD2_CD | GPIO_GPIO | GPIO_IN,
  65         /* FEC */
  66         PD0_AIN_FEC_TXD0,
  67         PD1_AIN_FEC_TXD1,
  68         PD2_AIN_FEC_TXD2,
  69         PD3_AIN_FEC_TXD3,
  70         PD4_AOUT_FEC_RX_ER,
  71         PD5_AOUT_FEC_RXD1,
  72         PD6_AOUT_FEC_RXD2,
  73         PD7_AOUT_FEC_RXD3,
  74         PD8_AF_FEC_MDIO,
  75         PD9_AIN_FEC_MDC,
  76         PD10_AOUT_FEC_CRS,
  77         PD11_AOUT_FEC_TX_CLK,
  78         PD12_AOUT_FEC_RXD0,
  79         PD13_AOUT_FEC_RX_DV,
  80         PD14_AOUT_FEC_RX_CLK,
  81         PD15_AOUT_FEC_COL,
  82         PD16_AIN_FEC_TX_ER,
  83         PF23_AIN_FEC_TX_EN,
  84         /* SSI1 */
  85         PC20_PF_SSI1_FS,
  86         PC21_PF_SSI1_RXD,
  87         PC22_PF_SSI1_TXD,
  88         PC23_PF_SSI1_CLK,
  89         /* onboard I2C */
  90         PC5_PF_I2C2_SDA,
  91         PC6_PF_I2C2_SCL,
  92         /* external I2C */
  93         PD17_PF_I2C_DATA,
  94         PD18_PF_I2C_CLK,
  95         /* SPI1 */
  96         PD25_PF_CSPI1_RDY,
  97         PD29_PF_CSPI1_SCLK,
  98         PD30_PF_CSPI1_MISO,
  99         PD31_PF_CSPI1_MOSI,
 100         /* OTG */
 101         OTG_PHY_CS_GPIO | GPIO_GPIO | GPIO_OUT,
 102         PC7_PF_USBOTG_DATA5,
 103         PC8_PF_USBOTG_DATA6,
 104         PC9_PF_USBOTG_DATA0,
 105         PC10_PF_USBOTG_DATA2,
 106         PC11_PF_USBOTG_DATA1,
 107         PC12_PF_USBOTG_DATA4,
 108         PC13_PF_USBOTG_DATA3,
 109         PE0_PF_USBOTG_NXT,
 110         PE1_PF_USBOTG_STP,
 111         PE2_PF_USBOTG_DIR,
 112         PE24_PF_USBOTG_CLK,
 113         PE25_PF_USBOTG_DATA7,
 114         /* USBH2 */
 115         USBH2_PHY_CS_GPIO | GPIO_GPIO | GPIO_OUT,
 116         PA0_PF_USBH2_CLK,
 117         PA1_PF_USBH2_DIR,
 118         PA2_PF_USBH2_DATA7,
 119         PA3_PF_USBH2_NXT,
 120         PA4_PF_USBH2_STP,
 121         PD19_AF_USBH2_DATA4,
 122         PD20_AF_USBH2_DATA3,
 123         PD21_AF_USBH2_DATA6,
 124         PD22_AF_USBH2_DATA0,
 125         PD23_AF_USBH2_DATA2,
 126         PD24_AF_USBH2_DATA1,
 127         PD26_AF_USBH2_DATA5,
 128         /* display */
 129         PA5_PF_LSCLK,
 130         PA6_PF_LD0,
 131         PA7_PF_LD1,
 132         PA8_PF_LD2,
 133         PA9_PF_LD3,
 134         PA10_PF_LD4,
 135         PA11_PF_LD5,
 136         PA12_PF_LD6,
 137         PA13_PF_LD7,
 138         PA14_PF_LD8,
 139         PA15_PF_LD9,
 140         PA16_PF_LD10,
 141         PA17_PF_LD11,
 142         PA18_PF_LD12,
 143         PA19_PF_LD13,
 144         PA20_PF_LD14,
 145         PA21_PF_LD15,
 146         PA22_PF_LD16,
 147         PA23_PF_LD17,
 148         PA26_PF_PS,
 149         PA28_PF_HSYNC,
 150         PA29_PF_VSYNC,
 151         PA31_PF_OE_ACD,
 152         /* free GPIO */
 153         GPIO_PORTC | 31 | GPIO_GPIO | GPIO_IN, /* GPIO0_IRQ */
 154         GPIO_PORTC | 25 | GPIO_GPIO | GPIO_IN, /* GPIO1_IRQ */
 155         GPIO_PORTE | 5 | GPIO_GPIO | GPIO_IN, /* GPIO2_IRQ */
 156 };
 157
 158 static const struct imxuart_platform_data uart_pdata __initconst = {
 159         .flags = IMXUART_HAVE_RTSCTS,
 160 };
 161
 162 static const struct mxc_nand_platform_data
 163 pca100_nand_board_info __initconst = {
 164         .width = 1,
 165         .hw_ecc = 1,
 166 };
 167
 168 static const struct imxi2c_platform_data pca100_i2c1_data __initconst = {
 169         .bitrate = 100000,
 170 };
 171
 172 static struct at24_platform_data board_eeprom = {
 173         .byte_len = 4096,
 174         .page_size = 32,
 175         .flags = AT24_FLAG_ADDR16,
 176 };
 177
 178 static struct i2c_board_info pca100_i2c_devices[] = {
 179         {
 180                 I2C_BOARD_INFO("at24", 0x52), /* E0=0, E1=1, E2=0 */
 181                 .platform_data = &board_eeprom,
 182         }, {
 183                 I2C_BOARD_INFO("pcf8563", 0x51),
 184         }, {
 185                 I2C_BOARD_INFO("lm75", 0x4a),
 186         }
 187 };
 188
 189 static struct spi_eeprom at25320 = {
 190         .name           = "at25320an",
 191         .byte_len       = 4096,
 192         .page_size      = 32,
 193         .flags          = EE_ADDR2,
 194 };
 195
 196 static struct spi_board_info pca100_spi_board_info[] __initdata = {
 197         {
 198                 .modalias = "at25",
 199                 .max_speed_hz = 30000,
 200                 .bus_num = 0,
 201                 .chip_select = 1,
 202                 .platform_data = &at25320,
 203         },
 204 };
 205
 206 static int pca100_spi_cs[] = {SPI1_SS0, SPI1_SS1};
 207
 208 static const struct spi_imx_master pca100_spi0_data __initconst = {
 209         .chipselect     = pca100_spi_cs,
 210         .num_chipselect = ARRAY_SIZE(pca100_spi_cs),
 211 };
 212
 213 static void pca100_ac97_warm_reset(struct snd_ac97 *ac97)
 214 {
 215         mxc_gpio_mode(GPIO_PORTC | 20 | GPIO_GPIO | GPIO_OUT);
 216         gpio_set_value(GPIO_PORTC + 20, 1);
 217         udelay(2);
 218         gpio_set_value(GPIO_PORTC + 20, 0);
 219         mxc_gpio_mode(PC20_PF_SSI1_FS);
 220         msleep(2);
 221 }
 222
 223 static void pca100_ac97_cold_reset(struct snd_ac97 *ac97)
 224 {
 225         mxc_gpio_mode(GPIO_PORTC | 20 | GPIO_GPIO | GPIO_OUT);  /* FS */
 226         gpio_set_value(GPIO_PORTC + 20, 0);
 227         mxc_gpio_mode(GPIO_PORTC | 22 | GPIO_GPIO | GPIO_OUT);  /* TX */
 228         gpio_set_value(GPIO_PORTC + 22, 0);
 229         mxc_gpio_mode(GPIO_PORTC | 28 | GPIO_GPIO | GPIO_OUT);  /* reset */
 230         gpio_set_value(GPIO_PORTC + 28, 0);
 231         udelay(10);
 232         gpio_set_value(GPIO_PORTC + 28, 1);
 233         mxc_gpio_mode(PC20_PF_SSI1_FS);
 234         mxc_gpio_mode(PC22_PF_SSI1_TXD);
 235         msleep(2);
 236 }
 237
 238 static const struct imx_ssi_platform_data pca100_ssi_pdata __initconst = {
 239         .ac97_reset             = pca100_ac97_cold_reset,
 240         .ac97_warm_reset        = pca100_ac97_warm_reset,
 241         .flags                  = IMX_SSI_USE_AC97,
 242 };
 243
 244 static int pca100_sdhc2_init(struct device *dev, irq_handler_t detect_irq,
 245                 void *data)
 246 {
 247         int ret;
 248
 249         ret = request_irq(IRQ_GPIOC(29), detect_irq,
 250                           IRQF_DISABLED | IRQF_TRIGGER_FALLING,
 251                           "imx-mmc-detect", data);
 252         if (ret)
 253                 printk(KERN_ERR
 254                         "pca100: Failed to reuest irq for sd/mmc detection\n");
 255
 256         return ret;
 257 }
 258
 259 static void pca100_sdhc2_exit(struct device *dev, void *data)
 260 {
 261         free_irq(IRQ_GPIOC(29), data);
 262 }
 263
 264 static const struct imxmmc_platform_data sdhc_pdata __initconst = {
 265         .init = pca100_sdhc2_init,
 266         .exit = pca100_sdhc2_exit,
 267 };
 268
 269 static int otg_phy_init(struct platform_device *pdev)
 270 {
 271         gpio_set_value(OTG_PHY_CS_GPIO, 0);
 272
 273         mdelay(10);
 274
 275         return mx27_initialize_usb_hw(pdev->id, MXC_EHCI_INTERFACE_DIFF_UNI);
 276 }
 277
 278 static struct mxc_usbh_platform_data otg_pdata __initdata = {
 279         .init   = otg_phy_init,
 280         .portsc = MXC_EHCI_MODE_ULPI,
 281 };
 282
 283 static int usbh2_phy_init(struct platform_device *pdev)
 284 {
 285         gpio_set_value(USBH2_PHY_CS_GPIO, 0);
 286
 287         mdelay(10);
 288
 289         return mx27_initialize_usb_hw(pdev->id, MXC_EHCI_INTERFACE_DIFF_UNI);
 290 }
 291
 292 static struct mxc_usbh_platform_data usbh2_pdata __initdata = {
 293         .init   = usbh2_phy_init,
 294         .portsc = MXC_EHCI_MODE_ULPI,
 295 };
 296
 297 static const struct fsl_usb2_platform_data otg_device_pdata __initconst = {
 298         .operating_mode = FSL_USB2_DR_DEVICE,
 299         .phy_mode       = FSL_USB2_PHY_ULPI,
 300 };
 301
 302 static int otg_mode_host;
 303
 304 static int __init pca100_otg_mode(char *options)
 305 {
 306         if (!strcmp(options, "host"))
 307                 otg_mode_host = 1;
 308         else if (!strcmp(options, "device"))
 309                 otg_mode_host = 0;
 310         else
 311                 pr_info("otg_mode neither \"host\" nor \"device\". "
 312                         "Defaulting to device\n");
 313         return 0;
 314 }
 315 __setup("otg_mode=", pca100_otg_mode);
 316
 317 /* framebuffer info */
 318 static struct imx_fb_videomode pca100_fb_modes[] = {
 319         {
 320                 .mode = {
 321                         .name           = "EMERGING-ETV570G0DHU",
 322                         .refresh        = 60,
 323                         .xres           = 640,
 324                         .yres           = 480,
 325                         .pixclock       = 39722, /* in ps (25.175 MHz) */
 326                         .hsync_len      = 30,
 327                         .left_margin    = 114,
 328                         .right_margin   = 16,
 329                         .vsync_len      = 3,
 330                         .upper_margin   = 32,
 331                         .lower_margin   = 0,
 332                 },
 333                 /*
 334                  * TFT
 335                  * Pixel pol active high
 336                  * HSYNC active low
 337                  * VSYNC active low
 338                  * use HSYNC for ACD count
 339                  * line clock disable while idle
 340                  * always enable line clock even if no data
 341                  */
 342                 .pcr = 0xf0c08080,
 343                 .bpp = 16,
 344         },
 345 };
 346
 347 static const struct imx_fb_platform_data pca100_fb_data __initconst = {
 348         .mode = pca100_fb_modes,
 349         .num_modes = ARRAY_SIZE(pca100_fb_modes),
 350
 351         .pwmr           = 0x00A903FF,
 352         .lscr1          = 0x00120300,
 353         .dmacr          = 0x00020010,
 354 };
 355
 356 static void __init pca100_init(void)
 357 {
 358         int ret;
 359
 360         imx27_soc_init();
 361
 362         /* SSI unit */
 363         mxc_audmux_v1_configure_port(MX27_AUDMUX_HPCR1_SSI0,
 364                                   MXC_AUDMUX_V1_PCR_SYN | /* 4wire mode */
 365                                   MXC_AUDMUX_V1_PCR_TFCSEL(3) |
 366                                   MXC_AUDMUX_V1_PCR_TCLKDIR | /* clock is output */
 367                                   MXC_AUDMUX_V1_PCR_RXDSEL(3));
 368         mxc_audmux_v1_configure_port(3,
 369                                   MXC_AUDMUX_V1_PCR_SYN | /* 4wire mode */
 370                                   MXC_AUDMUX_V1_PCR_TFCSEL(0) |
 371                                   MXC_AUDMUX_V1_PCR_TFSDIR |
 372                                   MXC_AUDMUX_V1_PCR_RXDSEL(0));
 373
 374         ret = mxc_gpio_setup_multiple_pins(pca100_pins,
 375                         ARRAY_SIZE(pca100_pins), "PCA100");
 376         if (ret)
 377                 printk(KERN_ERR "pca100: Failed to setup pins (%d)\n", ret);
 378
 379         imx27_add_imx_ssi(0, &pca100_ssi_pdata);
 380
 381         imx27_add_imx_uart0(&uart_pdata);
 382
 383         imx27_add_mxc_mmc(1, &sdhc_pdata);
 384
 385         imx27_add_mxc_nand(&pca100_nand_board_info);
 386
 387         /* only the i2c master 1 is used on this CPU card */
 388         i2c_register_board_info(1, pca100_i2c_devices,
 389                                 ARRAY_SIZE(pca100_i2c_devices));
 390
 391         imx27_add_imx_i2c(1, &pca100_i2c1_data);
 392
 393         mxc_gpio_mode(GPIO_PORTD | 28 | GPIO_GPIO | GPIO_IN);
 394         mxc_gpio_mode(GPIO_PORTD | 27 | GPIO_GPIO | GPIO_IN);
 395         spi_register_board_info(pca100_spi_board_info,
 396                                 ARRAY_SIZE(pca100_spi_board_info));
 397         imx27_add_spi_imx0(&pca100_spi0_data);
 398
 399         gpio_request(OTG_PHY_CS_GPIO, "usb-otg-cs");
 400         gpio_direction_output(OTG_PHY_CS_GPIO, 1);
 401         gpio_request(USBH2_PHY_CS_GPIO, "usb-host2-cs");
 402         gpio_direction_output(USBH2_PHY_CS_GPIO, 1);
 403
 404         if (otg_mode_host) {
 405                 otg_pdata.otg = imx_otg_ulpi_create(ULPI_OTG_DRVVBUS |
 406                                 ULPI_OTG_DRVVBUS_EXT);
 407
 408                 if (otg_pdata.otg)
 409                         imx27_add_mxc_ehci_otg(&otg_pdata);
 410         } else {
 411                 gpio_set_value(OTG_PHY_CS_GPIO, 0);
 412                 imx27_add_fsl_usb2_udc(&otg_device_pdata);
 413         }
 414
 415         usbh2_pdata.otg = otg_ulpi_create(&mxc_ulpi_access_ops,
 416                                 ULPI_OTG_DRVVBUS | ULPI_OTG_DRVVBUS_EXT);
 417
 418         if (usbh2_pdata.otg)
 419                 imx27_add_mxc_ehci_hs(2, &usbh2_pdata);
 420
 421         imx27_add_imx_fb(&pca100_fb_data);
 422
 423         imx27_add_fec(NULL);
 424         imx27_add_imx2_wdt(NULL);
 425         imx27_add_mxc_w1(NULL);
 426 }
 427
 428 static void __init pca100_timer_init(void)
 429 {
 430         mx27_clocks_init(26000000);
 431 }
 432
 433 static struct sys_timer pca100_timer = {
 434         .init = pca100_timer_init,
 435 };
 436
 437 MACHINE_START(PCA100, "phyCARD-i.MX27")
 438         .atag_offset = 0x100,
 439         .map_io = mx27_map_io,
 440         .init_early = imx27_init_early,
 441         .init_irq = mx27_init_irq,
 442         .handle_irq = imx27_handle_irq,
 443         .init_machine = pca100_init,
 444         .timer = &pca100_timer,
 445         .restart        = mxc_restart,
 446 MACHINE_END