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
  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/gpio.h>
  31 #include <mach/iomux-mx27.h>
  32 #include <mach/mxc_nand.h>
  33
  34 #include "devices-imx27.h"
  35
  36 /*
  37  * Base address of PBC controller, CS4
  38  */
  39 #define PBC_BASE_ADDRESS        0xf4300000
  40 #define PBC_REG_ADDR(offset)    (void __force __iomem *) \
  41                 (PBC_BASE_ADDRESS + (offset))
  42
  43 /* When the PBC address connection is fixed in h/w, defined as 1 */
  44 #define PBC_ADDR_SH             0
  45
  46 /* Offsets for the PBC Controller register */
  47 /*
  48  * PBC Board version register offset
  49  */
  50 #define PBC_VERSION_REG         PBC_REG_ADDR(0x00000 >> PBC_ADDR_SH)
  51 /*
  52  * PBC Board control register 1 set address.
  53  */
  54 #define PBC_BCTRL1_SET_REG      PBC_REG_ADDR(0x00008 >> PBC_ADDR_SH)
  55 /*
  56  * PBC Board control register 1 clear address.
  57  */
  58 #define PBC_BCTRL1_CLEAR_REG    PBC_REG_ADDR(0x0000C >> PBC_ADDR_SH)
  59
  60 /* PBC Board Control Register 1 bit definitions */
  61 #define PBC_BCTRL1_LCDON        0x0800  /* Enable the LCD */
  62
  63 /* to determine the correct external crystal reference */
  64 #define CKIH_27MHZ_BIT_SET      (1 << 3)
  65
  66 static const int mx27ads_pins[] __initconst = {
  67         /* UART0 */
  68         PE12_PF_UART1_TXD,
  69         PE13_PF_UART1_RXD,
  70         PE14_PF_UART1_CTS,
  71         PE15_PF_UART1_RTS,
  72         /* UART1 */
  73         PE3_PF_UART2_CTS,
  74         PE4_PF_UART2_RTS,
  75         PE6_PF_UART2_TXD,
  76         PE7_PF_UART2_RXD,
  77         /* UART2 */
  78         PE8_PF_UART3_TXD,
  79         PE9_PF_UART3_RXD,
  80         PE10_PF_UART3_CTS,
  81         PE11_PF_UART3_RTS,
  82         /* UART3 */
  83         PB26_AF_UART4_RTS,
  84         PB28_AF_UART4_TXD,
  85         PB29_AF_UART4_CTS,
  86         PB31_AF_UART4_RXD,
  87         /* UART4 */
  88         PB18_AF_UART5_TXD,
  89         PB19_AF_UART5_RXD,
  90         PB20_AF_UART5_CTS,
  91         PB21_AF_UART5_RTS,
  92         /* UART5 */
  93         PB10_AF_UART6_TXD,
  94         PB12_AF_UART6_CTS,
  95         PB11_AF_UART6_RXD,
  96         PB13_AF_UART6_RTS,
  97         /* FEC */
  98         PD0_AIN_FEC_TXD0,
  99         PD1_AIN_FEC_TXD1,
 100         PD2_AIN_FEC_TXD2,
 101         PD3_AIN_FEC_TXD3,
 102         PD4_AOUT_FEC_RX_ER,
 103         PD5_AOUT_FEC_RXD1,
 104         PD6_AOUT_FEC_RXD2,
 105         PD7_AOUT_FEC_RXD3,
 106         PD8_AF_FEC_MDIO,
 107         PD9_AIN_FEC_MDC,
 108         PD10_AOUT_FEC_CRS,
 109         PD11_AOUT_FEC_TX_CLK,
 110         PD12_AOUT_FEC_RXD0,
 111         PD13_AOUT_FEC_RX_DV,
 112         PD14_AOUT_FEC_RX_CLK,
 113         PD15_AOUT_FEC_COL,
 114         PD16_AIN_FEC_TX_ER,
 115         PF23_AIN_FEC_TX_EN,
 116         /* I2C2 */
 117         PC5_PF_I2C2_SDA,
 118         PC6_PF_I2C2_SCL,
 119         /* FB */
 120         PA5_PF_LSCLK,
 121         PA6_PF_LD0,
 122         PA7_PF_LD1,
 123         PA8_PF_LD2,
 124         PA9_PF_LD3,
 125         PA10_PF_LD4,
 126         PA11_PF_LD5,
 127         PA12_PF_LD6,
 128         PA13_PF_LD7,
 129         PA14_PF_LD8,
 130         PA15_PF_LD9,
 131         PA16_PF_LD10,
 132         PA17_PF_LD11,
 133         PA18_PF_LD12,
 134         PA19_PF_LD13,
 135         PA20_PF_LD14,
 136         PA21_PF_LD15,
 137         PA22_PF_LD16,
 138         PA23_PF_LD17,
 139         PA24_PF_REV,
 140         PA25_PF_CLS,
 141         PA26_PF_PS,
 142         PA27_PF_SPL_SPR,
 143         PA28_PF_HSYNC,
 144         PA29_PF_VSYNC,
 145         PA30_PF_CONTRAST,
 146         PA31_PF_OE_ACD,
 147         /* OWIRE */
 148         PE16_AF_OWIRE,
 149         /* SDHC1*/
 150         PE18_PF_SD1_D0,
 151         PE19_PF_SD1_D1,
 152         PE20_PF_SD1_D2,
 153         PE21_PF_SD1_D3,
 154         PE22_PF_SD1_CMD,
 155         PE23_PF_SD1_CLK,
 156         /* SDHC2*/
 157         PB4_PF_SD2_D0,
 158         PB5_PF_SD2_D1,
 159         PB6_PF_SD2_D2,
 160         PB7_PF_SD2_D3,
 161         PB8_PF_SD2_CMD,
 162         PB9_PF_SD2_CLK,
 163 };
 164
 165 static const struct mxc_nand_platform_data
 166 mx27ads_nand_board_info __initconst = {
 167         .width = 1,
 168         .hw_ecc = 1,
 169 };
 170
 171 /* ADS's NOR flash */
 172 static struct physmap_flash_data mx27ads_flash_data = {
 173         .width = 2,
 174 };
 175
 176 static struct resource mx27ads_flash_resource = {
 177         .start = 0xc0000000,
 178         .end = 0xc0000000 + 0x02000000 - 1,
 179         .flags = IORESOURCE_MEM,
 180
 181 };
 182
 183 static struct platform_device mx27ads_nor_mtd_device = {
 184         .name = "physmap-flash",
 185         .id = 0,
 186         .dev = {
 187                 .platform_data = &mx27ads_flash_data,
 188         },
 189         .num_resources = 1,
 190         .resource = &mx27ads_flash_resource,
 191 };
 192
 193 static const struct imxi2c_platform_data mx27ads_i2c1_data __initconst = {
 194         .bitrate = 100000,
 195 };
 196
 197 static struct i2c_board_info mx27ads_i2c_devices[] = {
 198 };
 199
 200 void lcd_power(int on)
 201 {
 202         if (on)
 203                 __raw_writew(PBC_BCTRL1_LCDON, PBC_BCTRL1_SET_REG);
 204         else
 205                 __raw_writew(PBC_BCTRL1_LCDON, PBC_BCTRL1_CLEAR_REG);
 206 }
 207
 208 static struct imx_fb_videomode mx27ads_modes[] = {
 209         {
 210                 .mode = {
 211                         .name           = "Sharp-LQ035Q7",
 212                         .refresh        = 60,
 213                         .xres           = 240,
 214                         .yres           = 320,
 215                         .pixclock       = 188679, /* in ps (5.3MHz) */
 216                         .hsync_len      = 1,
 217                         .left_margin    = 9,
 218                         .right_margin   = 16,
 219                         .vsync_len      = 1,
 220                         .upper_margin   = 7,
 221                         .lower_margin   = 9,
 222                 },
 223                 .bpp            = 16,
 224                 .pcr            = 0xFB008BC0,
 225         },
 226 };
 227
 228 static const struct imx_fb_platform_data mx27ads_fb_data __initconst = {
 229         .mode = mx27ads_modes,
 230         .num_modes = ARRAY_SIZE(mx27ads_modes),
 231
 232         /*
 233          * - HSYNC active high
 234          * - VSYNC active high
 235          * - clk notenabled while idle
 236          * - clock inverted
 237          * - data not inverted
 238          * - data enable low active
 239          * - enable sharp mode
 240          */
 241         .pwmr           = 0x00A903FF,
 242         .lscr1          = 0x00120300,
 243         .dmacr          = 0x00020010,
 244
 245         .lcd_power      = lcd_power,
 246 };
 247
 248 static int mx27ads_sdhc1_init(struct device *dev, irq_handler_t detect_irq,
 249                               void *data)
 250 {
 251         return request_irq(IRQ_GPIOE(21), detect_irq, IRQF_TRIGGER_RISING,
 252                            "sdhc1-card-detect", data);
 253 }
 254
 255 static int mx27ads_sdhc2_init(struct device *dev, irq_handler_t detect_irq,
 256                               void *data)
 257 {
 258         return request_irq(IRQ_GPIOB(7), detect_irq, IRQF_TRIGGER_RISING,
 259                            "sdhc2-card-detect", data);
 260 }
 261
 262 static void mx27ads_sdhc1_exit(struct device *dev, void *data)
 263 {
 264         free_irq(IRQ_GPIOE(21), data);
 265 }
 266
 267 static void mx27ads_sdhc2_exit(struct device *dev, void *data)
 268 {
 269         free_irq(IRQ_GPIOB(7), data);
 270 }
 271
 272 static const struct imxmmc_platform_data sdhc1_pdata __initconst = {
 273         .init = mx27ads_sdhc1_init,
 274         .exit = mx27ads_sdhc1_exit,
 275 };
 276
 277 static const struct imxmmc_platform_data sdhc2_pdata __initconst = {
 278         .init = mx27ads_sdhc2_init,
 279         .exit = mx27ads_sdhc2_exit,
 280 };
 281
 282 static struct platform_device *platform_devices[] __initdata = {
 283         &mx27ads_nor_mtd_device,
 284 };
 285
 286 static const struct imxuart_platform_data uart_pdata __initconst = {
 287         .flags = IMXUART_HAVE_RTSCTS,
 288 };
 289
 290 static void __init mx27ads_board_init(void)
 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         .boot_params = MX27_PHYS_OFFSET + 0x100,
 348         .map_io = mx27ads_map_io,
 349         .init_early = imx27_init_early,
 350         .init_irq = mx27_init_irq,
 351         .timer = &mx27ads_timer,
 352         .init_machine = mx27ads_board_init,
 353 MACHINE_END