arch/arm/mach-s3c64xx/mach-real6410.c

   1 /* linux/arch/arm/mach-s3c64xx/mach-real6410.c
   2  *
   3  * Copyright 2010 Darius Augulis <augulis.darius@gmail.com>
   4  * Copyright 2008 Openmoko, Inc.
   5  * Copyright 2008 Simtec Electronics
   6  *      Ben Dooks <ben@simtec.co.uk>
   7  *      http://armlinux.simtec.co.uk/
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License version 2 as
  11  * published by the Free Software Foundation.
  12  *
  13 */
  14
  15 #include <linux/init.h>
  16 #include <linux/interrupt.h>
  17 #include <linux/fb.h>
  18 #include <linux/gpio.h>
  19 #include <linux/kernel.h>
  20 #include <linux/list.h>
  21 #include <linux/dm9000.h>
  22 #include <linux/mtd/mtd.h>
  23 #include <linux/mtd/partitions.h>
  24 #include <linux/platform_device.h>
  25 #include <linux/serial_core.h>
  26 #include <linux/types.h>
  27
  28 #include <asm/hardware/vic.h>
  29 #include <asm/mach-types.h>
  30 #include <asm/mach/arch.h>
  31 #include <asm/mach/map.h>
  32
  33 #include <mach/map.h>
  34 #include <mach/regs-gpio.h>
  35 #include <mach/regs-modem.h>
  36 #include <mach/regs-srom.h>
  37
  38 #include <plat/adc.h>
  39 #include <plat/cpu.h>
  40 #include <plat/devs.h>
  41 #include <plat/fb.h>
  42 #include <plat/nand.h>
  43 #include <plat/regs-serial.h>
  44 #include <plat/ts.h>
  45 #include <plat/regs-fb-v4.h>
  46
  47 #include <video/platform_lcd.h>
  48
  49 #include "common.h"
  50
  51 #define UCON S3C2410_UCON_DEFAULT
  52 #define ULCON (S3C2410_LCON_CS8 | S3C2410_LCON_PNONE | S3C2410_LCON_STOPB)
  53 #define UFCON (S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE)
  54
  55 static struct s3c2410_uartcfg real6410_uartcfgs[] __initdata = {
  56         [0] = {
  57                 .hwport = 0,
  58                 .flags  = 0,
  59                 .ucon   = UCON,
  60                 .ulcon  = ULCON,
  61                 .ufcon  = UFCON,
  62         },
  63         [1] = {
  64                 .hwport = 1,
  65                 .flags  = 0,
  66                 .ucon   = UCON,
  67                 .ulcon  = ULCON,
  68                 .ufcon  = UFCON,
  69         },
  70         [2] = {
  71                 .hwport = 2,
  72                 .flags  = 0,
  73                 .ucon   = UCON,
  74                 .ulcon  = ULCON,
  75                 .ufcon  = UFCON,
  76         },
  77         [3] = {
  78                 .hwport = 3,
  79                 .flags  = 0,
  80                 .ucon   = UCON,
  81                 .ulcon  = ULCON,
  82                 .ufcon  = UFCON,
  83         },
  84 };
  85
  86 /* DM9000AEP 10/100 ethernet controller */
  87
  88 static struct resource real6410_dm9k_resource[] = {
  89         [0] = DEFINE_RES_MEM(S3C64XX_PA_XM0CSN1, 2),
  90         [1] = DEFINE_RES_MEM(S3C64XX_PA_XM0CSN1 + 4, 2),
  91         [2] = DEFINE_RES_NAMED(S3C_EINT(7), 1, NULL, IORESOURCE_IRQ \
  92                                         | IORESOURCE_IRQ_HIGHLEVEL),
  93 };
  94
  95 static struct dm9000_plat_data real6410_dm9k_pdata = {
  96         .flags          = (DM9000_PLATF_16BITONLY | DM9000_PLATF_NO_EEPROM),
  97 };
  98
  99 static struct platform_device real6410_device_eth = {
 100         .name           = "dm9000",
 101         .id             = -1,
 102         .num_resources  = ARRAY_SIZE(real6410_dm9k_resource),
 103         .resource       = real6410_dm9k_resource,
 104         .dev            = {
 105                 .platform_data  = &real6410_dm9k_pdata,
 106         },
 107 };
 108
 109 static struct s3c_fb_pd_win real6410_fb_win[] = {
 110         {
 111                 .win_mode       = {     /* 4.3" 480x272 */
 112                         .left_margin    = 3,
 113                         .right_margin   = 2,
 114                         .upper_margin   = 1,
 115                         .lower_margin   = 1,
 116                         .hsync_len      = 40,
 117                         .vsync_len      = 1,
 118                         .xres           = 480,
 119                         .yres           = 272,
 120                 },
 121                 .max_bpp        = 32,
 122                 .default_bpp    = 16,
 123         }, {
 124                 .win_mode       = {     /* 7.0" 800x480 */
 125                         .left_margin    = 8,
 126                         .right_margin   = 13,
 127                         .upper_margin   = 7,
 128                         .lower_margin   = 5,
 129                         .hsync_len      = 3,
 130                         .vsync_len      = 1,
 131                         .xres           = 800,
 132                         .yres           = 480,
 133                 },
 134                 .max_bpp        = 32,
 135                 .default_bpp    = 16,
 136         },
 137 };
 138
 139 static struct s3c_fb_platdata real6410_lcd_pdata __initdata = {
 140         .setup_gpio     = s3c64xx_fb_gpio_setup_24bpp,
 141         .win[0]         = &real6410_fb_win[0],
 142         .vidcon0        = VIDCON0_VIDOUT_RGB | VIDCON0_PNRMODE_RGB,
 143         .vidcon1        = VIDCON1_INV_HSYNC | VIDCON1_INV_VSYNC,
 144 };
 145
 146 static struct mtd_partition real6410_nand_part[] = {
 147         [0] = {
 148                 .name   = "uboot",
 149                 .size   = SZ_1M,
 150                 .offset = 0,
 151         },
 152         [1] = {
 153                 .name   = "kernel",
 154                 .size   = SZ_2M,
 155                 .offset = SZ_1M,
 156         },
 157         [2] = {
 158                 .name   = "rootfs",
 159                 .size   = MTDPART_SIZ_FULL,
 160                 .offset = SZ_1M + SZ_2M,
 161         },
 162 };
 163
 164 static struct s3c2410_nand_set real6410_nand_sets[] = {
 165         [0] = {
 166                 .name           = "nand",
 167                 .nr_chips       = 1,
 168                 .nr_partitions  = ARRAY_SIZE(real6410_nand_part),
 169                 .partitions     = real6410_nand_part,
 170         },
 171 };
 172
 173 static struct s3c2410_platform_nand real6410_nand_info = {
 174         .tacls          = 25,
 175         .twrph0         = 55,
 176         .twrph1         = 40,
 177         .nr_sets        = ARRAY_SIZE(real6410_nand_sets),
 178         .sets           = real6410_nand_sets,
 179 };
 180
 181 static struct platform_device *real6410_devices[] __initdata = {
 182         &real6410_device_eth,
 183         &s3c_device_hsmmc0,
 184         &s3c_device_hsmmc1,
 185         &s3c_device_fb,
 186         &s3c_device_nand,
 187         &s3c_device_adc,
 188         &s3c_device_ts,
 189         &s3c_device_ohci,
 190 };
 191
 192 static void __init real6410_map_io(void)
 193 {
 194         u32 tmp;
 195
 196         s3c64xx_init_io(NULL, 0);
 197         s3c24xx_init_clocks(12000000);
 198         s3c24xx_init_uarts(real6410_uartcfgs, ARRAY_SIZE(real6410_uartcfgs));
 199
 200         /* set the LCD type */
 201         tmp = __raw_readl(S3C64XX_SPCON);
 202         tmp &= ~S3C64XX_SPCON_LCD_SEL_MASK;
 203         tmp |= S3C64XX_SPCON_LCD_SEL_RGB;
 204         __raw_writel(tmp, S3C64XX_SPCON);
 205
 206         /* remove the LCD bypass */
 207         tmp = __raw_readl(S3C64XX_MODEM_MIFPCON);
 208         tmp &= ~MIFPCON_LCD_BYPASS;
 209         __raw_writel(tmp, S3C64XX_MODEM_MIFPCON);
 210 }
 211
 212 /*
 213  * real6410_features string
 214  *
 215  * 0-9 LCD configuration
 216  *
 217  */
 218 static char real6410_features_str[12] __initdata = "0";
 219
 220 static int __init real6410_features_setup(char *str)
 221 {
 222         if (str)
 223                 strlcpy(real6410_features_str, str,
 224                         sizeof(real6410_features_str));
 225         return 1;
 226 }
 227
 228 __setup("real6410=", real6410_features_setup);
 229
 230 #define FEATURE_SCREEN (1 << 0)
 231
 232 struct real6410_features_t {
 233         int done;
 234         int lcd_index;
 235 };
 236
 237 static void real6410_parse_features(
 238                 struct real6410_features_t *features,
 239                 const char *features_str)
 240 {
 241         const char *fp = features_str;
 242
 243         features->done = 0;
 244         features->lcd_index = 0;
 245
 246         while (*fp) {
 247                 char f = *fp++;
 248
 249                 switch (f) {
 250                 case '0'...'9': /* tft screen */
 251                         if (features->done & FEATURE_SCREEN) {
 252                                 printk(KERN_INFO "REAL6410: '%c' ignored, "
 253                                         "screen type already set\n", f);
 254                         } else {
 255                                 int li = f - '0';
 256                                 if (li >= ARRAY_SIZE(real6410_fb_win))
 257                                         printk(KERN_INFO "REAL6410: '%c' out "
 258                                                 "of range LCD mode\n", f);
 259                                 else {
 260                                         features->lcd_index = li;
 261                                 }
 262                         }
 263                         features->done |= FEATURE_SCREEN;
 264                         break;
 265                 }
 266         }
 267 }
 268
 269 static void __init real6410_machine_init(void)
 270 {
 271         u32 cs1;
 272         struct real6410_features_t features = { 0 };
 273
 274         printk(KERN_INFO "REAL6410: Option string real6410=%s\n",
 275                         real6410_features_str);
 276
 277         /* Parse the feature string */
 278         real6410_parse_features(&features, real6410_features_str);
 279
 280         real6410_lcd_pdata.win[0] = &real6410_fb_win[features.lcd_index];
 281
 282         printk(KERN_INFO "REAL6410: selected LCD display is %dx%d\n",
 283                 real6410_lcd_pdata.win[0]->win_mode.xres,
 284                 real6410_lcd_pdata.win[0]->win_mode.yres);
 285
 286         s3c_fb_set_platdata(&real6410_lcd_pdata);
 287         s3c_nand_set_platdata(&real6410_nand_info);
 288         s3c24xx_ts_set_platdata(NULL);
 289
 290         /* configure nCS1 width to 16 bits */
 291
 292         cs1 = __raw_readl(S3C64XX_SROM_BW) &
 293                 ~(S3C64XX_SROM_BW__CS_MASK << S3C64XX_SROM_BW__NCS1__SHIFT);
 294         cs1 |= ((1 << S3C64XX_SROM_BW__DATAWIDTH__SHIFT) |
 295                 (1 << S3C64XX_SROM_BW__WAITENABLE__SHIFT) |
 296                 (1 << S3C64XX_SROM_BW__BYTEENABLE__SHIFT)) <<
 297                         S3C64XX_SROM_BW__NCS1__SHIFT;
 298         __raw_writel(cs1, S3C64XX_SROM_BW);
 299
 300         /* set timing for nCS1 suitable for ethernet chip */
 301
 302         __raw_writel((0 << S3C64XX_SROM_BCX__PMC__SHIFT) |
 303                 (6 << S3C64XX_SROM_BCX__TACP__SHIFT) |
 304                 (4 << S3C64XX_SROM_BCX__TCAH__SHIFT) |
 305                 (1 << S3C64XX_SROM_BCX__TCOH__SHIFT) |
 306                 (13 << S3C64XX_SROM_BCX__TACC__SHIFT) |
 307                 (4 << S3C64XX_SROM_BCX__TCOS__SHIFT) |
 308                 (0 << S3C64XX_SROM_BCX__TACS__SHIFT), S3C64XX_SROM_BC1);
 309
 310         gpio_request(S3C64XX_GPF(15), "LCD power");
 311
 312         platform_add_devices(real6410_devices, ARRAY_SIZE(real6410_devices));
 313 }
 314
 315 MACHINE_START(REAL6410, "REAL6410")
 316         /* Maintainer: Darius Augulis <augulis.darius@gmail.com> */
 317         .atag_offset    = 0x100,
 318
 319         .init_irq       = s3c6410_init_irq,
 320         .handle_irq     = vic_handle_irq,
 321         .map_io         = real6410_map_io,
 322         .init_machine   = real6410_machine_init,
 323         .timer          = &s3c24xx_timer,
 324         .restart        = s3c64xx_restart,
 325 MACHINE_END