arch/arm/mach-realview/core.c

   1 /*
   2  *  linux/arch/arm/mach-realview/core.c
   3  *
   4  *  Copyright (C) 1999 - 2003 ARM Limited
   5  *  Copyright (C) 2000 Deep Blue Solutions Ltd
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  */
  21 #include <linux/init.h>
  22 #include <linux/platform_device.h>
  23 #include <linux/dma-mapping.h>
  24 #include <linux/device.h>
  25 #include <linux/interrupt.h>
  26 #include <linux/amba/bus.h>
  27 #include <linux/amba/clcd.h>
  28 #include <linux/io.h>
  29 #include <linux/smsc911x.h>
  30 #include <linux/ata_platform.h>
  31 #include <linux/amba/mmci.h>
  32 #include <linux/gfp.h>
  33 #include <linux/mtd/physmap.h>
  34 #include <linux/memblock.h>
  35
  36 #include <mach/hardware.h>
  37 #include <asm/irq.h>
  38 #include <asm/mach-types.h>
  39 #include <asm/hardware/arm_timer.h>
  40 #include <asm/hardware/icst.h>
  41
  42 #include <asm/mach/arch.h>
  43 #include <asm/mach/irq.h>
  44 #include <asm/mach/map.h>
  45
  46
  47 #include <mach/platform.h>
  48 #include <mach/irqs.h>
  49 #include <asm/hardware/timer-sp.h>
  50
  51 #include <plat/clcd.h>
  52 #include <plat/sched_clock.h>
  53
  54 #include "core.h"
  55
  56 #define REALVIEW_FLASHCTRL    (__io_address(REALVIEW_SYS_BASE) + REALVIEW_SYS_FLASH_OFFSET)
  57
  58 static void realview_flash_set_vpp(struct platform_device *pdev, int on)
  59 {
  60         u32 val;
  61
  62         val = __raw_readl(REALVIEW_FLASHCTRL);
  63         if (on)
  64                 val |= REALVIEW_FLASHPROG_FLVPPEN;
  65         else
  66                 val &= ~REALVIEW_FLASHPROG_FLVPPEN;
  67         __raw_writel(val, REALVIEW_FLASHCTRL);
  68 }
  69
  70 static struct physmap_flash_data realview_flash_data = {
  71         .width                  = 4,
  72         .set_vpp                = realview_flash_set_vpp,
  73 };
  74
  75 struct platform_device realview_flash_device = {
  76         .name                   = "physmap-flash",
  77         .id                     = 0,
  78         .dev                    = {
  79                 .platform_data  = &realview_flash_data,
  80         },
  81 };
  82
  83 int realview_flash_register(struct resource *res, u32 num)
  84 {
  85         realview_flash_device.resource = res;
  86         realview_flash_device.num_resources = num;
  87         return platform_device_register(&realview_flash_device);
  88 }
  89
  90 static struct smsc911x_platform_config smsc911x_config = {
  91         .flags          = SMSC911X_USE_32BIT,
  92         .irq_polarity   = SMSC911X_IRQ_POLARITY_ACTIVE_HIGH,
  93         .irq_type       = SMSC911X_IRQ_TYPE_PUSH_PULL,
  94         .phy_interface  = PHY_INTERFACE_MODE_MII,
  95 };
  96
  97 static struct platform_device realview_eth_device = {
  98         .name           = "smsc911x",
  99         .id             = 0,
 100         .num_resources  = 2,
 101 };
 102
 103 int realview_eth_register(const char *name, struct resource *res)
 104 {
 105         if (name)
 106                 realview_eth_device.name = name;
 107         realview_eth_device.resource = res;
 108         if (strcmp(realview_eth_device.name, "smsc911x") == 0)
 109                 realview_eth_device.dev.platform_data = &smsc911x_config;
 110
 111         return platform_device_register(&realview_eth_device);
 112 }
 113
 114 struct platform_device realview_usb_device = {
 115         .name                   = "isp1760",
 116         .num_resources          = 2,
 117 };
 118
 119 int realview_usb_register(struct resource *res)
 120 {
 121         realview_usb_device.resource = res;
 122         return platform_device_register(&realview_usb_device);
 123 }
 124
 125 static struct pata_platform_info pata_platform_data = {
 126         .ioport_shift           = 1,
 127 };
 128
 129 static struct resource pata_resources[] = {
 130         [0] = {
 131                 .start          = REALVIEW_CF_BASE,
 132                 .end            = REALVIEW_CF_BASE + 0xff,
 133                 .flags          = IORESOURCE_MEM,
 134         },
 135         [1] = {
 136                 .start          = REALVIEW_CF_BASE + 0x100,
 137                 .end            = REALVIEW_CF_BASE + SZ_4K - 1,
 138                 .flags          = IORESOURCE_MEM,
 139         },
 140 };
 141
 142 struct platform_device realview_cf_device = {
 143         .name                   = "pata_platform",
 144         .id                     = -1,
 145         .num_resources          = ARRAY_SIZE(pata_resources),
 146         .resource               = pata_resources,
 147         .dev                    = {
 148                 .platform_data  = &pata_platform_data,
 149         },
 150 };
 151
 152 static struct resource realview_leds_resources[] = {
 153         {
 154                 .start  = REALVIEW_SYS_BASE + REALVIEW_SYS_LED_OFFSET,
 155                 .end    = REALVIEW_SYS_BASE + REALVIEW_SYS_LED_OFFSET + 4,
 156                 .flags  = IORESOURCE_MEM,
 157         },
 158 };
 159
 160 struct platform_device realview_leds_device = {
 161         .name           = "versatile-leds",
 162         .id             = -1,
 163         .num_resources  = ARRAY_SIZE(realview_leds_resources),
 164         .resource       = realview_leds_resources,
 165 };
 166
 167 static struct resource realview_i2c_resource = {
 168         .start          = REALVIEW_I2C_BASE,
 169         .end            = REALVIEW_I2C_BASE + SZ_4K - 1,
 170         .flags          = IORESOURCE_MEM,
 171 };
 172
 173 struct platform_device realview_i2c_device = {
 174         .name           = "versatile-i2c",
 175         .id             = 0,
 176         .num_resources  = 1,
 177         .resource       = &realview_i2c_resource,
 178 };
 179
 180 static struct i2c_board_info realview_i2c_board_info[] = {
 181         {
 182                 I2C_BOARD_INFO("ds1338", 0xd0 >> 1),
 183         },
 184 };
 185
 186 static int __init realview_i2c_init(void)
 187 {
 188         return i2c_register_board_info(0, realview_i2c_board_info,
 189                                        ARRAY_SIZE(realview_i2c_board_info));
 190 }
 191 arch_initcall(realview_i2c_init);
 192
 193 #define REALVIEW_SYSMCI (__io_address(REALVIEW_SYS_BASE) + REALVIEW_SYS_MCI_OFFSET)
 194
 195 /*
 196  * This is only used if GPIOLIB support is disabled
 197  */
 198 static unsigned int realview_mmc_status(struct device *dev)
 199 {
 200         struct amba_device *adev = container_of(dev, struct amba_device, dev);
 201         u32 mask;
 202
 203         if (machine_is_realview_pb1176()) {
 204                 static bool inserted = false;
 205
 206                 /*
 207                  * The PB1176 does not have the status register,
 208                  * assume it is inserted at startup, then invert
 209                  * for each call so card insertion/removal will
 210                  * be detected anyway. This will not be called if
 211                  * GPIO on PL061 is active, which is the proper
 212                  * way to do this on the PB1176.
 213                  */
 214                 inserted = !inserted;
 215                 return inserted ? 0 : 1;
 216         }
 217
 218         if (adev->res.start == REALVIEW_MMCI0_BASE)
 219                 mask = 1;
 220         else
 221                 mask = 2;
 222
 223         return readl(REALVIEW_SYSMCI) & mask;
 224 }
 225
 226 struct mmci_platform_data realview_mmc0_plat_data = {
 227         .ocr_mask       = MMC_VDD_32_33|MMC_VDD_33_34,
 228         .status         = realview_mmc_status,
 229         .gpio_wp        = 17,
 230         .gpio_cd        = 16,
 231         .cd_invert      = true,
 232 };
 233
 234 struct mmci_platform_data realview_mmc1_plat_data = {
 235         .ocr_mask       = MMC_VDD_32_33|MMC_VDD_33_34,
 236         .status         = realview_mmc_status,
 237         .gpio_wp        = 19,
 238         .gpio_cd        = 18,
 239         .cd_invert      = true,
 240 };
 241
 242 void __init realview_init_early(void)
 243 {
 244         void __iomem *sys = __io_address(REALVIEW_SYS_BASE);
 245
 246         versatile_sched_clock_init(sys + REALVIEW_SYS_24MHz_OFFSET, 24000000);
 247 }
 248
 249 /*
 250  * CLCD support.
 251  */
 252 #define SYS_CLCD_NLCDIOON       (1 << 2)
 253 #define SYS_CLCD_VDDPOSSWITCH   (1 << 3)
 254 #define SYS_CLCD_PWR3V5SWITCH   (1 << 4)
 255 #define SYS_CLCD_ID_MASK        (0x1f << 8)
 256 #define SYS_CLCD_ID_SANYO_3_8   (0x00 << 8)
 257 #define SYS_CLCD_ID_UNKNOWN_8_4 (0x01 << 8)
 258 #define SYS_CLCD_ID_EPSON_2_2   (0x02 << 8)
 259 #define SYS_CLCD_ID_SANYO_2_5   (0x07 << 8)
 260 #define SYS_CLCD_ID_VGA         (0x1f << 8)
 261
 262 /*
 263  * Disable all display connectors on the interface module.
 264  */
 265 static void realview_clcd_disable(struct clcd_fb *fb)
 266 {
 267         void __iomem *sys_clcd = __io_address(REALVIEW_SYS_BASE) + REALVIEW_SYS_CLCD_OFFSET;
 268         u32 val;
 269
 270         val = readl(sys_clcd);
 271         val &= ~SYS_CLCD_NLCDIOON | SYS_CLCD_PWR3V5SWITCH;
 272         writel(val, sys_clcd);
 273 }
 274
 275 /*
 276  * Enable the relevant connector on the interface module.
 277  */
 278 static void realview_clcd_enable(struct clcd_fb *fb)
 279 {
 280         void __iomem *sys_clcd = __io_address(REALVIEW_SYS_BASE) + REALVIEW_SYS_CLCD_OFFSET;
 281         u32 val;
 282
 283         /*
 284          * Enable the PSUs
 285          */
 286         val = readl(sys_clcd);
 287         val |= SYS_CLCD_NLCDIOON | SYS_CLCD_PWR3V5SWITCH;
 288         writel(val, sys_clcd);
 289 }
 290
 291 /*
 292  * Detect which LCD panel is connected, and return the appropriate
 293  * clcd_panel structure.  Note: we do not have any information on
 294  * the required timings for the 8.4in panel, so we presently assume
 295  * VGA timings.
 296  */
 297 static int realview_clcd_setup(struct clcd_fb *fb)
 298 {
 299         void __iomem *sys_clcd = __io_address(REALVIEW_SYS_BASE) + REALVIEW_SYS_CLCD_OFFSET;
 300         const char *panel_name, *vga_panel_name;
 301         unsigned long framesize;
 302         u32 val;
 303
 304         if (machine_is_realview_eb()) {
 305                 /* VGA, 16bpp */
 306                 framesize = 640 * 480 * 2;
 307                 vga_panel_name = "VGA";
 308         } else {
 309                 /* XVGA, 16bpp */
 310                 framesize = 1024 * 768 * 2;
 311                 vga_panel_name = "XVGA";
 312         }
 313
 314         val = readl(sys_clcd) & SYS_CLCD_ID_MASK;
 315         if (val == SYS_CLCD_ID_SANYO_3_8)
 316                 panel_name = "Sanyo TM38QV67A02A";
 317         else if (val == SYS_CLCD_ID_SANYO_2_5)
 318                 panel_name = "Sanyo QVGA Portrait";
 319         else if (val == SYS_CLCD_ID_EPSON_2_2)
 320                 panel_name = "Epson L2F50113T00";
 321         else if (val == SYS_CLCD_ID_VGA)
 322                 panel_name = vga_panel_name;
 323         else {
 324                 pr_err("CLCD: unknown LCD panel ID 0x%08x, using VGA\n", val);
 325                 panel_name = vga_panel_name;
 326         }
 327
 328         fb->panel = versatile_clcd_get_panel(panel_name);
 329         if (!fb->panel)
 330                 return -EINVAL;
 331
 332         return versatile_clcd_setup_dma(fb, framesize);
 333 }
 334
 335 struct clcd_board clcd_plat_data = {
 336         .name           = "RealView",
 337         .caps           = CLCD_CAP_ALL,
 338         .check          = clcdfb_check,
 339         .decode         = clcdfb_decode,
 340         .disable        = realview_clcd_disable,
 341         .enable         = realview_clcd_enable,
 342         .setup          = realview_clcd_setup,
 343         .mmap           = versatile_clcd_mmap_dma,
 344         .remove         = versatile_clcd_remove_dma,
 345 };
 346
 347 /*
 348  * Where is the timer (VA)?
 349  */
 350 void __iomem *timer0_va_base;
 351 void __iomem *timer1_va_base;
 352 void __iomem *timer2_va_base;
 353 void __iomem *timer3_va_base;
 354
 355 /*
 356  * Set up the clock source and clock events devices
 357  */
 358 void __init realview_timer_init(unsigned int timer_irq)
 359 {
 360         u32 val;
 361
 362         /*
 363          * set clock frequency:
 364          *      REALVIEW_REFCLK is 32KHz
 365          *      REALVIEW_TIMCLK is 1MHz
 366          */
 367         val = readl(__io_address(REALVIEW_SCTL_BASE));
 368         writel((REALVIEW_TIMCLK << REALVIEW_TIMER1_EnSel) |
 369                (REALVIEW_TIMCLK << REALVIEW_TIMER2_EnSel) |
 370                (REALVIEW_TIMCLK << REALVIEW_TIMER3_EnSel) |
 371                (REALVIEW_TIMCLK << REALVIEW_TIMER4_EnSel) | val,
 372                __io_address(REALVIEW_SCTL_BASE));
 373
 374         /*
 375          * Initialise to a known state (all timers off)
 376          */
 377         writel(0, timer0_va_base + TIMER_CTRL);
 378         writel(0, timer1_va_base + TIMER_CTRL);
 379         writel(0, timer2_va_base + TIMER_CTRL);
 380         writel(0, timer3_va_base + TIMER_CTRL);
 381
 382         sp804_clocksource_init(timer3_va_base, "timer3");
 383         sp804_clockevents_init(timer0_va_base, timer_irq, "timer0");
 384 }
 385
 386 /*
 387  * Setup the memory banks.
 388  */
 389 void realview_fixup(struct tag *tags, char **from)
 390 {
 391         /*
 392          * Most RealView platforms have 512MB contiguous RAM at 0x70000000.
 393          * Half of this is mirrored at 0.
 394          */
 395 #ifdef CONFIG_REALVIEW_HIGH_PHYS_OFFSET
 396         memblock_add(0x70000000, SZ_512M);
 397 #else
 398         memblock_add(0, SZ_256M);
 399 #endif
 400 }