arch/arm/mach-omap2/board-cm-t3517.c

   1 /*
   2  * linux/arch/arm/mach-omap2/board-cm-t3517.c
   3  *
   4  * Support for the CompuLab CM-T3517 modules
   5  *
   6  * Copyright (C) 2010 CompuLab, Ltd.
   7  * Author: Igor Grinberg <grinberg@compulab.co.il>
   8  *
   9  * This program is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU General Public License
  11  * version 2 as published by the Free Software Foundation.
  12  *
  13  * This program is distributed in the hope that it will be useful, but
  14  * WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  21  * 02110-1301 USA
  22  *
  23  */
  24
  25 #include <linux/kernel.h>
  26 #include <linux/init.h>
  27 #include <linux/platform_device.h>
  28 #include <linux/delay.h>
  29 #include <linux/gpio.h>
  30 #include <linux/leds.h>
  31 #include <linux/rtc-v3020.h>
  32 #include <linux/mtd/mtd.h>
  33 #include <linux/mtd/nand.h>
  34 #include <linux/mtd/partitions.h>
  35 #include <linux/can/platform/ti_hecc.h>
  36
  37 #include <asm/mach-types.h>
  38 #include <asm/mach/arch.h>
  39 #include <asm/mach/map.h>
  40
  41 #include <plat/board.h>
  42 #include <plat/common.h>
  43 #include <plat/usb.h>
  44 #include <plat/nand.h>
  45 #include <plat/gpmc.h>
  46
  47 #include <mach/am35xx.h>
  48
  49 #include "mux.h"
  50 #include "control.h"
  51
  52 #if defined(CONFIG_LEDS_GPIO) || defined(CONFIG_LEDS_GPIO_MODULE)
  53 static struct gpio_led cm_t3517_leds[] = {
  54         [0] = {
  55                 .gpio                   = 186,
  56                 .name                   = "cm-t3517:green",
  57                 .default_trigger        = "heartbeat",
  58                 .active_low             = 0,
  59         },
  60 };
  61
  62 static struct gpio_led_platform_data cm_t3517_led_pdata = {
  63         .num_leds       = ARRAY_SIZE(cm_t3517_leds),
  64         .leds           = cm_t3517_leds,
  65 };
  66
  67 static struct platform_device cm_t3517_led_device = {
  68         .name           = "leds-gpio",
  69         .id             = -1,
  70         .dev            = {
  71                 .platform_data  = &cm_t3517_led_pdata,
  72         },
  73 };
  74
  75 static void __init cm_t3517_init_leds(void)
  76 {
  77         platform_device_register(&cm_t3517_led_device);
  78 }
  79 #else
  80 static inline void cm_t3517_init_leds(void) {}
  81 #endif
  82
  83 #if defined(CONFIG_CAN_TI_HECC) || defined(CONFIG_CAN_TI_HECC_MODULE)
  84 static struct resource cm_t3517_hecc_resources[] = {
  85         {
  86                 .start  = AM35XX_IPSS_HECC_BASE,
  87                 .end    = AM35XX_IPSS_HECC_BASE + SZ_16K - 1,
  88                 .flags  = IORESOURCE_MEM,
  89         },
  90         {
  91                 .start  = INT_35XX_HECC0_IRQ,
  92                 .end    = INT_35XX_HECC0_IRQ,
  93                 .flags  = IORESOURCE_IRQ,
  94         },
  95 };
  96
  97 static struct ti_hecc_platform_data cm_t3517_hecc_pdata = {
  98         .scc_hecc_offset        = AM35XX_HECC_SCC_HECC_OFFSET,
  99         .scc_ram_offset         = AM35XX_HECC_SCC_RAM_OFFSET,
 100         .hecc_ram_offset        = AM35XX_HECC_RAM_OFFSET,
 101         .mbx_offset             = AM35XX_HECC_MBOX_OFFSET,
 102         .int_line               = AM35XX_HECC_INT_LINE,
 103         .version                = AM35XX_HECC_VERSION,
 104 };
 105
 106 static struct platform_device cm_t3517_hecc_device = {
 107         .name           = "ti_hecc",
 108         .id             = 1,
 109         .num_resources  = ARRAY_SIZE(cm_t3517_hecc_resources),
 110         .resource       = cm_t3517_hecc_resources,
 111         .dev            = {
 112                 .platform_data  = &cm_t3517_hecc_pdata,
 113         },
 114 };
 115
 116 static void cm_t3517_init_hecc(void)
 117 {
 118         platform_device_register(&cm_t3517_hecc_device);
 119 }
 120 #else
 121 static inline void cm_t3517_init_hecc(void) {}
 122 #endif
 123
 124 #if defined(CONFIG_RTC_DRV_V3020) || defined(CONFIG_RTC_DRV_V3020_MODULE)
 125 #define RTC_IO_GPIO             (153)
 126 #define RTC_WR_GPIO             (154)
 127 #define RTC_RD_GPIO             (53)
 128 #define RTC_CS_GPIO             (163)
 129 #define RTC_CS_EN_GPIO          (160)
 130
 131 struct v3020_platform_data cm_t3517_v3020_pdata = {
 132         .use_gpio       = 1,
 133         .gpio_cs        = RTC_CS_GPIO,
 134         .gpio_wr        = RTC_WR_GPIO,
 135         .gpio_rd        = RTC_RD_GPIO,
 136         .gpio_io        = RTC_IO_GPIO,
 137 };
 138
 139 static struct platform_device cm_t3517_rtc_device = {
 140         .name           = "v3020",
 141         .id             = -1,
 142         .dev            = {
 143                 .platform_data = &cm_t3517_v3020_pdata,
 144         }
 145 };
 146
 147 static void __init cm_t3517_init_rtc(void)
 148 {
 149         int err;
 150
 151         err = gpio_request(RTC_CS_EN_GPIO, "rtc cs en");
 152         if (err) {
 153                 pr_err("CM-T3517: rtc cs en gpio request failed: %d\n", err);
 154                 return;
 155         }
 156
 157         gpio_direction_output(RTC_CS_EN_GPIO, 1);
 158
 159         platform_device_register(&cm_t3517_rtc_device);
 160 }
 161 #else
 162 static inline void cm_t3517_init_rtc(void) {}
 163 #endif
 164
 165 #if defined(CONFIG_USB_EHCI_HCD) || defined(CONFIG_USB_EHCI_HCD_MODULE)
 166 #define HSUSB1_RESET_GPIO       (146)
 167 #define HSUSB2_RESET_GPIO       (147)
 168 #define USB_HUB_RESET_GPIO      (152)
 169
 170 static struct ehci_hcd_omap_platform_data cm_t3517_ehci_pdata __initdata = {
 171         .port_mode[0] = EHCI_HCD_OMAP_MODE_PHY,
 172         .port_mode[1] = EHCI_HCD_OMAP_MODE_PHY,
 173         .port_mode[2] = EHCI_HCD_OMAP_MODE_UNKNOWN,
 174
 175         .phy_reset  = true,
 176         .reset_gpio_port[0]  = HSUSB1_RESET_GPIO,
 177         .reset_gpio_port[1]  = HSUSB2_RESET_GPIO,
 178         .reset_gpio_port[2]  = -EINVAL,
 179 };
 180
 181 static int cm_t3517_init_usbh(void)
 182 {
 183         int err;
 184
 185         err = gpio_request(USB_HUB_RESET_GPIO, "usb hub rst");
 186         if (err) {
 187                 pr_err("CM-T3517: usb hub rst gpio request failed: %d\n", err);
 188         } else {
 189                 gpio_direction_output(USB_HUB_RESET_GPIO, 0);
 190                 udelay(10);
 191                 gpio_set_value(USB_HUB_RESET_GPIO, 1);
 192                 msleep(1);
 193         }
 194
 195         usb_ehci_init(&cm_t3517_ehci_pdata);
 196
 197         return 0;
 198 }
 199 #else
 200 static inline int cm_t3517_init_usbh(void)
 201 {
 202         return 0;
 203 }
 204 #endif
 205
 206 #if defined(CONFIG_MTD_NAND_OMAP2) || defined(CONFIG_MTD_NAND_OMAP2_MODULE)
 207 #define NAND_BLOCK_SIZE         SZ_128K
 208
 209 static struct mtd_partition cm_t3517_nand_partitions[] = {
 210         {
 211                 .name           = "xloader",
 212                 .offset         = 0,                    /* Offset = 0x00000 */
 213                 .size           = 4 * NAND_BLOCK_SIZE,
 214                 .mask_flags     = MTD_WRITEABLE
 215         },
 216         {
 217                 .name           = "uboot",
 218                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x80000 */
 219                 .size           = 15 * NAND_BLOCK_SIZE,
 220         },
 221         {
 222                 .name           = "uboot environment",
 223                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x260000 */
 224                 .size           = 2 * NAND_BLOCK_SIZE,
 225         },
 226         {
 227                 .name           = "linux",
 228                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x2A0000 */
 229                 .size           = 32 * NAND_BLOCK_SIZE,
 230         },
 231         {
 232                 .name           = "rootfs",
 233                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x6A0000 */
 234                 .size           = MTDPART_SIZ_FULL,
 235         },
 236 };
 237
 238 static struct omap_nand_platform_data cm_t3517_nand_data = {
 239         .parts                  = cm_t3517_nand_partitions,
 240         .nr_parts               = ARRAY_SIZE(cm_t3517_nand_partitions),
 241         .dma_channel            = -1,   /* disable DMA in OMAP NAND driver */
 242         .cs                     = 0,
 243 };
 244
 245 static void __init cm_t3517_init_nand(void)
 246 {
 247         if (gpmc_nand_init(&cm_t3517_nand_data) < 0)
 248                 pr_err("CM-T3517: NAND initialization failed\n");
 249 }
 250 #else
 251 static inline void cm_t3517_init_nand(void) {}
 252 #endif
 253
 254 static struct omap_board_config_kernel cm_t3517_config[] __initdata = {
 255 };
 256
 257 static void __init cm_t3517_init_irq(void)
 258 {
 259         omap_board_config = cm_t3517_config;
 260         omap_board_config_size = ARRAY_SIZE(cm_t3517_config);
 261
 262         omap2_init_common_infrastructure();
 263         omap2_init_common_devices(NULL, NULL);
 264         omap_init_irq();
 265 }
 266
 267 static struct omap_board_mux board_mux[] __initdata = {
 268         /* GPIO186 - Green LED */
 269         OMAP3_MUX(SYS_CLKOUT2, OMAP_MUX_MODE4 | OMAP_PIN_OUTPUT),
 270
 271         /* RTC GPIOs: */
 272         /* IO - GPIO153 */
 273         OMAP3_MUX(MCBSP4_DR, OMAP_MUX_MODE4 | OMAP_PIN_INPUT),
 274         /* WR# - GPIO154 */
 275         OMAP3_MUX(MCBSP4_DX, OMAP_MUX_MODE4 | OMAP_PIN_INPUT),
 276         /* RD# - GPIO53 */
 277         OMAP3_MUX(GPMC_NCS2, OMAP_MUX_MODE4 | OMAP_PIN_INPUT),
 278         /* CS# - GPIO163 */
 279         OMAP3_MUX(UART3_CTS_RCTX, OMAP_MUX_MODE4 | OMAP_PIN_INPUT),
 280         /* CS EN - GPIO160 */
 281         OMAP3_MUX(MCBSP_CLKS, OMAP_MUX_MODE4 | OMAP_PIN_INPUT),
 282
 283         /* HSUSB1 RESET */
 284         OMAP3_MUX(UART2_TX, OMAP_MUX_MODE4 | OMAP_PIN_OUTPUT),
 285         /* HSUSB2 RESET */
 286         OMAP3_MUX(UART2_RX, OMAP_MUX_MODE4 | OMAP_PIN_OUTPUT),
 287         /* CM-T3517 USB HUB nRESET */
 288         OMAP3_MUX(MCBSP4_CLKX, OMAP_MUX_MODE4 | OMAP_PIN_OUTPUT),
 289
 290         { .reg_offset = OMAP_MUX_TERMINATOR },
 291 };
 292
 293 static void __init cm_t3517_init(void)
 294 {
 295         omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
 296         omap_serial_init();
 297         cm_t3517_init_leds();
 298         cm_t3517_init_nand();
 299         cm_t3517_init_rtc();
 300         cm_t3517_init_usbh();
 301         cm_t3517_init_hecc();
 302 }
 303
 304 MACHINE_START(CM_T3517, "Compulab CM-T3517")
 305         .boot_params    = 0x80000100,
 306         .map_io         = omap3_map_io,
 307         .reserve        = omap_reserve,
 308         .init_irq       = cm_t3517_init_irq,
 309         .init_machine   = cm_t3517_init,
 310         .timer          = &omap_timer,
 311 MACHINE_END