arch/arm/mach-imx/mach-mx27ads.c

   1 /*
   2  *  Copyright (C) 2000 Deep Blue Solutions Ltd
   3  *  Copyright (C) 2002 Shane Nay (shane@minirl.com)
   4  *  Copyright 2006-2007 Freescale Semiconductor, Inc. All Rights Reserved.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  */
  16 #include <linux/gpio.h>
  17 #include <linux/platform_device.h>
  18 #include <linux/mtd/mtd.h>
  19 #include <linux/mtd/map.h>
  20 #include <linux/mtd/partitions.h>
  21 #include <linux/mtd/physmap.h>
  22 #include <linux/i2c.h>
  23 #include <linux/irq.h>
  24 #include <mach/common.h>
  25 #include <mach/hardware.h>
  26 #include <asm/mach-types.h>
  27 #include <asm/mach/arch.h>
  28 #include <asm/mach/time.h>
  29 #include <asm/mach/map.h>
  30 #include <mach/iomux-mx27.h>
  31
  32 #include "devices-imx27.h"
  33
  34 /*
  35  * Base address of PBC controller, CS4
  36  */
  37 #define PBC_BASE_ADDRESS        0xf4300000
  38 #define PBC_REG_ADDR(offset)    (void __force __iomem *) \
  39                 (PBC_BASE_ADDRESS + (offset))
  40
  41 /* When the PBC address connection is fixed in h/w, defined as 1 */
  42 #define PBC_ADDR_SH             0
  43
  44 /* Offsets for the PBC Controller register */
  45 /*
  46  * PBC Board version register offset
  47  */
  48 #define PBC_VERSION_REG         PBC_REG_ADDR(0x00000 >> PBC_ADDR_SH)
  49 /*
  50  * PBC Board control register 1 set address.
  51  */
  52 #define PBC_BCTRL1_SET_REG      PBC_REG_ADDR(0x00008 >> PBC_ADDR_SH)
  53 /*
  54  * PBC Board control register 1 clear address.
  55  */
  56 #define PBC_BCTRL1_CLEAR_REG    PBC_REG_ADDR(0x0000C >> PBC_ADDR_SH)
  57
  58 /* PBC Board Control Register 1 bit definitions */
  59 #define PBC_BCTRL1_LCDON        0x0800  /* Enable the LCD */
  60
  61 /* to determine the correct external crystal reference */
  62 #define CKIH_27MHZ_BIT_SET      (1 << 3)
  63
  64 static const int mx27ads_pins[] __initconst = {
  65         /* UART0 */
  66         PE12_PF_UART1_TXD,
  67         PE13_PF_UART1_RXD,
  68         PE14_PF_UART1_CTS,
  69         PE15_PF_UART1_RTS,
  70         /* UART1 */
  71         PE3_PF_UART2_CTS,
  72         PE4_PF_UART2_RTS,
  73         PE6_PF_UART2_TXD,
  74         PE7_PF_UART2_RXD,
  75         /* UART2 */
  76         PE8_PF_UART3_TXD,
  77         PE9_PF_UART3_RXD,
  78         PE10_PF_UART3_CTS,
  79         PE11_PF_UART3_RTS,
  80         /* UART3 */
  81         PB26_AF_UART4_RTS,
  82         PB28_AF_UART4_TXD,
  83         PB29_AF_UART4_CTS,
  84         PB31_AF_UART4_RXD,
  85         /* UART4 */
  86         PB18_AF_UART5_TXD,
  87         PB19_AF_UART5_RXD,
  88         PB20_AF_UART5_CTS,
  89         PB21_AF_UART5_RTS,
  90         /* UART5 */
  91         PB10_AF_UART6_TXD,
  92         PB12_AF_UART6_CTS,
  93         PB11_AF_UART6_RXD,
  94         PB13_AF_UART6_RTS,
  95         /* FEC */
  96         PD0_AIN_FEC_TXD0,
  97         PD1_AIN_FEC_TXD1,
  98         PD2_AIN_FEC_TXD2,
  99         PD3_AIN_FEC_TXD3,
 100         PD4_AOUT_FEC_RX_ER,
 101         PD5_AOUT_FEC_RXD1,
 102         PD6_AOUT_FEC_RXD2,
 103         PD7_AOUT_FEC_RXD3,
 104         PD8_AF_FEC_MDIO,
 105         PD9_AIN_FEC_MDC,
 106         PD10_AOUT_FEC_CRS,
 107         PD11_AOUT_FEC_TX_CLK,
 108         PD12_AOUT_FEC_RXD0,
 109         PD13_AOUT_FEC_RX_DV,
 110         PD14_AOUT_FEC_RX_CLK,
 111         PD15_AOUT_FEC_COL,
 112         PD16_AIN_FEC_TX_ER,
 113         PF23_AIN_FEC_TX_EN,
 114         /* I2C2 */
 115         PC5_PF_I2C2_SDA,
 116         PC6_PF_I2C2_SCL,
 117         /* FB */
 118         PA5_PF_LSCLK,
 119         PA6_PF_LD0,
 120         PA7_PF_LD1,
 121         PA8_PF_LD2,
 122         PA9_PF_LD3,
 123         PA10_PF_LD4,
 124         PA11_PF_LD5,
 125         PA12_PF_LD6,
 126         PA13_PF_LD7,
 127         PA14_PF_LD8,
 128         PA15_PF_LD9,
 129         PA16_PF_LD10,
 130         PA17_PF_LD11,
 131         PA18_PF_LD12,
 132         PA19_PF_LD13,
 133         PA20_PF_LD14,
 134         PA21_PF_LD15,
 135         PA22_PF_LD16,
 136         PA23_PF_LD17,
 137         PA24_PF_REV,
 138         PA25_PF_CLS,
 139         PA26_PF_PS,
 140         PA27_PF_SPL_SPR,
 141         PA28_PF_HSYNC,
 142         PA29_PF_VSYNC,
 143         PA30_PF_CONTRAST,
 144         PA31_PF_OE_ACD,
 145         /* OWIRE */
 146         PE16_AF_OWIRE,
 147         /* SDHC1*/
 148         PE18_PF_SD1_D0,
 149         PE19_PF_SD1_D1,
 150         PE20_PF_SD1_D2,
 151         PE21_PF_SD1_D3,
 152         PE22_PF_SD1_CMD,
 153         PE23_PF_SD1_CLK,
 154         /* SDHC2*/
 155         PB4_PF_SD2_D0,
 156         PB5_PF_SD2_D1,
 157         PB6_PF_SD2_D2,
 158         PB7_PF_SD2_D3,
 159         PB8_PF_SD2_CMD,
 160         PB9_PF_SD2_CLK,
 161 };
 162
 163 static const struct mxc_nand_platform_data
 164 mx27ads_nand_board_info __initconst = {
 165         .width = 1,
 166         .hw_ecc = 1,
 167 };
 168
 169 /* ADS's NOR flash */
 170 static struct physmap_flash_data mx27ads_flash_data = {
 171         .width = 2,
 172 };
 173
 174 static struct resource mx27ads_flash_resource = {
 175         .start = 0xc0000000,
 176         .end = 0xc0000000 + 0x02000000 - 1,
 177         .flags = IORESOURCE_MEM,
 178
 179 };
 180
 181 static struct platform_device mx27ads_nor_mtd_device = {
 182         .name = "physmap-flash",
 183         .id = 0,
 184         .dev = {
 185                 .platform_data = &mx27ads_flash_data,
 186         },
 187         .num_resources = 1,
 188         .resource = &mx27ads_flash_resource,
 189 };
 190
 191 static const struct imxi2c_platform_data mx27ads_i2c1_data __initconst = {
 192         .bitrate = 100000,
 193 };
 194
 195 static struct i2c_board_info mx27ads_i2c_devices[] = {
 196 };
 197
 198 void lcd_power(int on)
 199 {
 200         if (on)
 201                 __raw_writew(PBC_BCTRL1_LCDON, PBC_BCTRL1_SET_REG);
 202         else
 203                 __raw_writew(PBC_BCTRL1_LCDON, PBC_BCTRL1_CLEAR_REG);
 204 }
 205
 206 static struct imx_fb_videomode mx27ads_modes[] = {
 207         {
 208                 .mode = {
 209                         .name           = "Sharp-LQ035Q7",
 210                         .refresh        = 60,
 211                         .xres           = 240,
 212                         .yres           = 320,
 213                         .pixclock       = 188679, /* in ps (5.3MHz) */
 214                         .hsync_len      = 1,
 215                         .left_margin    = 9,
 216                         .right_margin   = 16,
 217                         .vsync_len      = 1,
 218                         .upper_margin   = 7,
 219                         .lower_margin   = 9,
 220                 },
 221                 .bpp            = 16,
 222                 .pcr            = 0xFB008BC0,
 223         },
 224 };
 225
 226 static const struct imx_fb_platform_data mx27ads_fb_data __initconst = {
 227         .mode = mx27ads_modes,
 228         .num_modes = ARRAY_SIZE(mx27ads_modes),
 229
 230         /*
 231          * - HSYNC active high
 232          * - VSYNC active high
 233          * - clk notenabled while idle
 234          * - clock inverted
 235          * - data not inverted
 236          * - data enable low active
 237          * - enable sharp mode
 238          */
 239         .pwmr           = 0x00A903FF,
 240         .lscr1          = 0x00120300,
 241         .dmacr          = 0x00020010,
 242
 243         .lcd_power      = lcd_power,
 244 };
 245
 246 static int mx27ads_sdhc1_init(struct device *dev, irq_handler_t detect_irq,
 247                               void *data)
 248 {
 249         return request_irq(IRQ_GPIOE(21), detect_irq, IRQF_TRIGGER_RISING,
 250                            "sdhc1-card-detect", data);
 251 }
 252
 253 static int mx27ads_sdhc2_init(struct device *dev, irq_handler_t detect_irq,
 254                               void *data)
 255 {
 256         return request_irq(IRQ_GPIOB(7), detect_irq, IRQF_TRIGGER_RISING,
 257                            "sdhc2-card-detect", data);
 258 }
 259
 260 static void mx27ads_sdhc1_exit(struct device *dev, void *data)
 261 {
 262         free_irq(IRQ_GPIOE(21), data);
 263 }
 264
 265 static void mx27ads_sdhc2_exit(struct device *dev, void *data)
 266 {
 267         free_irq(IRQ_GPIOB(7), data);
 268 }
 269
 270 static const struct imxmmc_platform_data sdhc1_pdata __initconst = {
 271         .init = mx27ads_sdhc1_init,
 272         .exit = mx27ads_sdhc1_exit,
 273 };
 274
 275 static const struct imxmmc_platform_data sdhc2_pdata __initconst = {
 276         .init = mx27ads_sdhc2_init,
 277         .exit = mx27ads_sdhc2_exit,
 278 };
 279
 280 static struct platform_device *platform_devices[] __initdata = {
 281         &mx27ads_nor_mtd_device,
 282 };
 283
 284 static const struct imxuart_platform_data uart_pdata __initconst = {
 285         .flags = IMXUART_HAVE_RTSCTS,
 286 };
 287
 288 static void __init mx27ads_board_init(void)
 289 {
 290         imx27_soc_init();
 291
 292         mxc_gpio_setup_multiple_pins(mx27ads_pins, ARRAY_SIZE(mx27ads_pins),
 293                         "mx27ads");
 294
 295         imx27_add_imx_uart0(&uart_pdata);
 296         imx27_add_imx_uart1(&uart_pdata);
 297         imx27_add_imx_uart2(&uart_pdata);
 298         imx27_add_imx_uart3(&uart_pdata);
 299         imx27_add_imx_uart4(&uart_pdata);
 300         imx27_add_imx_uart5(&uart_pdata);
 301         imx27_add_mxc_nand(&mx27ads_nand_board_info);
 302
 303         /* only the i2c master 1 is used on this CPU card */
 304         i2c_register_board_info(1, mx27ads_i2c_devices,
 305                                 ARRAY_SIZE(mx27ads_i2c_devices));
 306         imx27_add_imx_i2c(1, &mx27ads_i2c1_data);
 307         imx27_add_imx_fb(&mx27ads_fb_data);
 308         imx27_add_mxc_mmc(0, &sdhc1_pdata);
 309         imx27_add_mxc_mmc(1, &sdhc2_pdata);
 310
 311         imx27_add_fec(NULL);
 312         platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
 313         imx27_add_mxc_w1(NULL);
 314 }
 315
 316 static void __init mx27ads_timer_init(void)
 317 {
 318         unsigned long fref = 26000000;
 319
 320         if ((__raw_readw(PBC_VERSION_REG) & CKIH_27MHZ_BIT_SET) == 0)
 321                 fref = 27000000;
 322
 323         mx27_clocks_init(fref);
 324 }
 325
 326 static struct sys_timer mx27ads_timer = {
 327         .init   = mx27ads_timer_init,
 328 };
 329
 330 static struct map_desc mx27ads_io_desc[] __initdata = {
 331         {
 332                 .virtual = PBC_BASE_ADDRESS,
 333                 .pfn = __phys_to_pfn(MX27_CS4_BASE_ADDR),
 334                 .length = SZ_1M,
 335                 .type = MT_DEVICE,
 336         },
 337 };
 338
 339 static void __init mx27ads_map_io(void)
 340 {
 341         mx27_map_io();
 342         iotable_init(mx27ads_io_desc, ARRAY_SIZE(mx27ads_io_desc));
 343 }
 344
 345 MACHINE_START(MX27ADS, "Freescale i.MX27ADS")
 346         /* maintainer: Freescale Semiconductor, Inc. */
 347         .atag_offset = 0x100,
 348         .map_io = mx27ads_map_io,
 349         .init_early = imx27_init_early,
 350         .init_irq = mx27_init_irq,
 351         .handle_irq = imx27_handle_irq,
 352         .timer = &mx27ads_timer,
 353         .init_machine = mx27ads_board_init,
 354 MACHINE_END