release/src-rt-6.x.4708/linux/linux-2.6.36/arch/arm/mach-mx3/mach-cpuimx35.c

   1 /*
   2  * Copyright (C) 2010 Eric Benard - eric@eukrea.com
   3  * Copyright (C) 2009 Sascha Hauer, Pengutronix
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  18  */
  19
  20 #include <linux/types.h>
  21 #include <linux/init.h>
  22
  23 #include <linux/platform_device.h>
  24 #include <linux/mtd/physmap.h>
  25 #include <linux/memory.h>
  26 #include <linux/gpio.h>
  27 #include <linux/interrupt.h>
  28 #include <linux/delay.h>
  29 #include <linux/i2c.h>
  30 #include <linux/i2c/tsc2007.h>
  31 #include <linux/usb/otg.h>
  32 #include <linux/usb/ulpi.h>
  33 #include <linux/fsl_devices.h>
  34
  35 #include <asm/mach-types.h>
  36 #include <asm/mach/arch.h>
  37 #include <asm/mach/time.h>
  38 #include <asm/mach/map.h>
  39
  40 #include <mach/eukrea-baseboards.h>
  41 #include <mach/hardware.h>
  42 #include <mach/common.h>
  43 #include <mach/iomux-mx35.h>
  44 #include <mach/mxc_nand.h>
  45 #include <mach/mxc_ehci.h>
  46 #include <mach/ulpi.h>
  47
  48 #include "devices-imx35.h"
  49 #include "devices.h"
  50
  51 static const struct imxuart_platform_data uart_pdata __initconst = {
  52         .flags = IMXUART_HAVE_RTSCTS,
  53 };
  54
  55 static const struct imxi2c_platform_data
  56 eukrea_cpuimx35_i2c0_data __initconst = {
  57         .bitrate = 50000,
  58 };
  59
  60 #define TSC2007_IRQGPIO         (2 * 32 + 2)
  61 static int ts_get_pendown_state(void)
  62 {
  63         int val = 0;
  64         gpio_free(TSC2007_IRQGPIO);
  65         gpio_request(TSC2007_IRQGPIO, NULL);
  66         gpio_direction_input(TSC2007_IRQGPIO);
  67
  68         val = gpio_get_value(TSC2007_IRQGPIO);
  69
  70         gpio_free(TSC2007_IRQGPIO);
  71         gpio_request(TSC2007_IRQGPIO, NULL);
  72
  73         return val ? 0 : 1;
  74 }
  75
  76 static int ts_init(void)
  77 {
  78         gpio_request(TSC2007_IRQGPIO, NULL);
  79         return 0;
  80 }
  81
  82 static struct tsc2007_platform_data tsc2007_info = {
  83         .model                  = 2007,
  84         .x_plate_ohms           = 180,
  85         .get_pendown_state      = ts_get_pendown_state,
  86         .init_platform_hw       = ts_init,
  87 };
  88
  89 static struct i2c_board_info eukrea_cpuimx35_i2c_devices[] = {
  90         {
  91                 I2C_BOARD_INFO("pcf8563", 0x51),
  92         }, {
  93                 I2C_BOARD_INFO("tsc2007", 0x48),
  94                 .type           = "tsc2007",
  95                 .platform_data  = &tsc2007_info,
  96                 .irq            = gpio_to_irq(TSC2007_IRQGPIO),
  97         },
  98 };
  99
 100 static struct platform_device *devices[] __initdata = {
 101         &mxc_fec_device,
 102         &imx_wdt_device0,
 103 };
 104
 105 static struct pad_desc eukrea_cpuimx35_pads[] = {
 106         /* UART1 */
 107         MX35_PAD_CTS1__UART1_CTS,
 108         MX35_PAD_RTS1__UART1_RTS,
 109         MX35_PAD_TXD1__UART1_TXD_MUX,
 110         MX35_PAD_RXD1__UART1_RXD_MUX,
 111         /* FEC */
 112         MX35_PAD_FEC_TX_CLK__FEC_TX_CLK,
 113         MX35_PAD_FEC_RX_CLK__FEC_RX_CLK,
 114         MX35_PAD_FEC_RX_DV__FEC_RX_DV,
 115         MX35_PAD_FEC_COL__FEC_COL,
 116         MX35_PAD_FEC_RDATA0__FEC_RDATA_0,
 117         MX35_PAD_FEC_TDATA0__FEC_TDATA_0,
 118         MX35_PAD_FEC_TX_EN__FEC_TX_EN,
 119         MX35_PAD_FEC_MDC__FEC_MDC,
 120         MX35_PAD_FEC_MDIO__FEC_MDIO,
 121         MX35_PAD_FEC_TX_ERR__FEC_TX_ERR,
 122         MX35_PAD_FEC_RX_ERR__FEC_RX_ERR,
 123         MX35_PAD_FEC_CRS__FEC_CRS,
 124         MX35_PAD_FEC_RDATA1__FEC_RDATA_1,
 125         MX35_PAD_FEC_TDATA1__FEC_TDATA_1,
 126         MX35_PAD_FEC_RDATA2__FEC_RDATA_2,
 127         MX35_PAD_FEC_TDATA2__FEC_TDATA_2,
 128         MX35_PAD_FEC_RDATA3__FEC_RDATA_3,
 129         MX35_PAD_FEC_TDATA3__FEC_TDATA_3,
 130         /* I2C1 */
 131         MX35_PAD_I2C1_CLK__I2C1_SCL,
 132         MX35_PAD_I2C1_DAT__I2C1_SDA,
 133         /* TSC2007 IRQ */
 134         MX35_PAD_ATA_DA2__GPIO3_2,
 135 };
 136
 137 static const struct mxc_nand_platform_data
 138 eukrea_cpuimx35_nand_board_info __initconst = {
 139         .width          = 1,
 140         .hw_ecc         = 1,
 141         .flash_bbt      = 1,
 142 };
 143
 144 static struct mxc_usbh_platform_data otg_pdata = {
 145         .portsc = MXC_EHCI_MODE_UTMI,
 146         .flags  = MXC_EHCI_INTERFACE_DIFF_UNI,
 147 };
 148
 149 static struct mxc_usbh_platform_data usbh1_pdata = {
 150         .portsc = MXC_EHCI_MODE_SERIAL,
 151         .flags  = MXC_EHCI_INTERFACE_SINGLE_UNI | MXC_EHCI_INTERNAL_PHY |
 152                   MXC_EHCI_IPPUE_DOWN,
 153 };
 154
 155 static struct fsl_usb2_platform_data otg_device_pdata = {
 156         .operating_mode = FSL_USB2_DR_DEVICE,
 157         .phy_mode       = FSL_USB2_PHY_UTMI,
 158 };
 159
 160 static int otg_mode_host;
 161
 162 static int __init eukrea_cpuimx35_otg_mode(char *options)
 163 {
 164         if (!strcmp(options, "host"))
 165                 otg_mode_host = 1;
 166         else if (!strcmp(options, "device"))
 167                 otg_mode_host = 0;
 168         else
 169                 pr_info("otg_mode neither \"host\" nor \"device\". "
 170                         "Defaulting to device\n");
 171         return 0;
 172 }
 173 __setup("otg_mode=", eukrea_cpuimx35_otg_mode);
 174
 175 /*
 176  * Board specific initialization.
 177  */
 178 static void __init mxc_board_init(void)
 179 {
 180         mxc_iomux_v3_setup_multiple_pads(eukrea_cpuimx35_pads,
 181                         ARRAY_SIZE(eukrea_cpuimx35_pads));
 182
 183         platform_add_devices(devices, ARRAY_SIZE(devices));
 184
 185         imx35_add_imx_uart0(&uart_pdata);
 186         imx35_add_mxc_nand(&eukrea_cpuimx35_nand_board_info);
 187
 188         i2c_register_board_info(0, eukrea_cpuimx35_i2c_devices,
 189                         ARRAY_SIZE(eukrea_cpuimx35_i2c_devices));
 190         imx35_add_imx_i2c0(&eukrea_cpuimx35_i2c0_data);
 191
 192 #if defined(CONFIG_USB_ULPI)
 193         if (otg_mode_host) {
 194                 otg_pdata.otg = otg_ulpi_create(&mxc_ulpi_access_ops,
 195                                 ULPI_OTG_DRVVBUS | ULPI_OTG_DRVVBUS_EXT);
 196
 197                 mxc_register_device(&mxc_otg_host, &otg_pdata);
 198         }
 199         mxc_register_device(&mxc_usbh1, &usbh1_pdata);
 200 #endif
 201         if (!otg_mode_host)
 202                 mxc_register_device(&mxc_otg_udc_device, &otg_device_pdata);
 203
 204 #ifdef CONFIG_MACH_EUKREA_MBIMXSD35_BASEBOARD
 205         eukrea_mbimxsd35_baseboard_init();
 206 #endif
 207 }
 208
 209 static void __init eukrea_cpuimx35_timer_init(void)
 210 {
 211         mx35_clocks_init();
 212 }
 213
 214 struct sys_timer eukrea_cpuimx35_timer = {
 215         .init   = eukrea_cpuimx35_timer_init,
 216 };
 217
 218 MACHINE_START(EUKREA_CPUIMX35, "Eukrea CPUIMX35")
 219         /* Maintainer: Eukrea Electromatique */
 220         .phys_io        = MX35_AIPS1_BASE_ADDR,
 221         .io_pg_offst    = ((MX35_AIPS1_BASE_ADDR_VIRT) >> 18) & 0xfffc,
 222         .boot_params    = MX3x_PHYS_OFFSET + 0x100,
 223         .map_io         = mx35_map_io,
 224         .init_irq       = mx35_init_irq,
 225         .init_machine   = mxc_board_init,
 226         .timer          = &eukrea_cpuimx35_timer,
 227 MACHINE_END