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/platform_data/video-clcd-versatile.h>
  29 #include <linux/io.h>
  30 #include <linux/smsc911x.h>
  31 #include <linux/smc91x.h>
  32 #include <linux/ata_platform.h>
  33 #include <linux/amba/mmci.h>
  34 #include <linux/gfp.h>
  35 #include <linux/mtd/physmap.h>
  36 #include <linux/memblock.h>
  37
  38 #include <mach/hardware.h>
  39 #include <asm/irq.h>
  40 #include <asm/mach-types.h>
  41 #include <asm/hardware/arm_timer.h>
  42 #include <asm/hardware/icst.h>
  43
  44 #include <asm/mach/arch.h>
  45 #include <asm/mach/irq.h>
  46 #include <asm/mach/map.h>
  47
  48
  49 #include <mach/platform.h>
  50 #include <mach/irqs.h>
  51 #include <asm/hardware/timer-sp.h>
  52
  53 #include <plat/sched_clock.h>
  54
  55 #include "core.h"
  56
  57 #define REALVIEW_FLASHCTRL    (__io_address(REALVIEW_SYS_BASE) + REALVIEW_SYS_FLASH_OFFSET)
  58
  59 static void realview_flash_set_vpp(struct platform_device *pdev, int on)
  60 {
  61         u32 val;
  62
  63         val = __raw_readl(REALVIEW_FLASHCTRL);
  64         if (on)
  65                 val |= REALVIEW_FLASHPROG_FLVPPEN;
  66         else
  67                 val &= ~REALVIEW_FLASHPROG_FLVPPEN;
  68         __raw_writel(val, REALVIEW_FLASHCTRL);
  69 }
  70
  71 static struct physmap_flash_data realview_flash_data = {
  72         .width                  = 4,
  73         .set_vpp                = realview_flash_set_vpp,
  74 };
  75
  76 struct platform_device realview_flash_device = {
  77         .name                   = "physmap-flash",
  78         .id                     = 0,
  79         .dev                    = {
  80                 .platform_data  = &realview_flash_data,
  81         },
  82 };
  83
  84 int realview_flash_register(struct resource *res, u32 num)
  85 {
  86         realview_flash_device.resource = res;
  87         realview_flash_device.num_resources = num;
  88         return platform_device_register(&realview_flash_device);
  89 }
  90
  91 static struct smsc911x_platform_config smsc911x_config = {
  92         .flags          = SMSC911X_USE_32BIT,
  93         .irq_polarity   = SMSC911X_IRQ_POLARITY_ACTIVE_HIGH,
  94         .irq_type       = SMSC911X_IRQ_TYPE_PUSH_PULL,
  95         .phy_interface  = PHY_INTERFACE_MODE_MII,
  96 };
  97
  98 static struct smc91x_platdata smc91x_platdata = {
  99         .flags = SMC91X_USE_32BIT | SMC91X_NOWAIT,
 100 };
 101
 102 static struct platform_device realview_eth_device = {
 103         .name           = "smsc911x",
 104         .id             = 0,
 105         .num_resources  = 2,
 106 };
 107
 108 int realview_eth_register(const char *name, struct resource *res)
 109 {
 110         if (name)
 111                 realview_eth_device.name = name;
 112         realview_eth_device.resource = res;
 113         if (strcmp(realview_eth_device.name, "smsc911x") == 0)
 114                 realview_eth_device.dev.platform_data = &smsc911x_config;
 115         else
 116                 realview_eth_device.dev.platform_data = &smc91x_platdata;
 117
 118         return platform_device_register(&realview_eth_device);
 119 }
 120
 121 struct platform_device realview_usb_device = {
 122         .name                   = "isp1760",
 123         .num_resources          = 2,
 124 };
 125
 126 int realview_usb_register(struct resource *res)
 127 {
 128         realview_usb_device.resource = res;
 129         return platform_device_register(&realview_usb_device);
 130 }
 131
 132 static struct pata_platform_info pata_platform_data = {
 133         .ioport_shift           = 1,
 134 };
 135
 136 static struct resource pata_resources[] = {
 137         [0] = {
 138                 .start          = REALVIEW_CF_BASE,
 139                 .end            = REALVIEW_CF_BASE + 0xff,
 140                 .flags          = IORESOURCE_MEM,
 141         },
 142         [1] = {
 143                 .start          = REALVIEW_CF_BASE + 0x100,
 144                 .end            = REALVIEW_CF_BASE + SZ_4K - 1,
 145                 .flags          = IORESOURCE_MEM,
 146         },
 147 };
 148
 149 struct platform_device realview_cf_device = {
 150         .name                   = "pata_platform",
 151         .id                     = -1,
 152         .num_resources          = ARRAY_SIZE(pata_resources),
 153         .resource               = pata_resources,
 154         .dev                    = {
 155                 .platform_data  = &pata_platform_data,
 156         },
 157 };
 158
 159 static struct resource realview_leds_resources[] = {
 160         {
 161                 .start  = REALVIEW_SYS_BASE + REALVIEW_SYS_LED_OFFSET,
 162                 .end    = REALVIEW_SYS_BASE + REALVIEW_SYS_LED_OFFSET + 4,
 163                 .flags  = IORESOURCE_MEM,
 164         },
 165 };
 166
 167 struct platform_device realview_leds_device = {
 168         .name           = "versatile-leds",
 169         .id             = -1,
 170         .num_resources  = ARRAY_SIZE(realview_leds_resources),
 171         .resource       = realview_leds_resources,
 172 };
 173
 174 static struct resource realview_i2c_resource = {
 175         .start          = REALVIEW_I2C_BASE,
 176         .end            = REALVIEW_I2C_BASE + SZ_4K - 1,
 177         .flags          = IORESOURCE_MEM,
 178 };
 179
 180 struct platform_device realview_i2c_device = {
 181         .name           = "versatile-i2c",
 182         .id             = 0,
 183         .num_resources  = 1,
 184         .resource       = &realview_i2c_resource,
 185 };
 186
 187 static struct i2c_board_info realview_i2c_board_info[] = {
 188         {
 189                 I2C_BOARD_INFO("ds1338", 0xd0 >> 1),
 190         },
 191 };
 192
 193 static int __init realview_i2c_init(void)
 194 {
 195         return i2c_register_board_info(0, realview_i2c_board_info,
 196                                        ARRAY_SIZE(realview_i2c_board_info));
 197 }
 198 arch_initcall(realview_i2c_init);
 199
 200 #define REALVIEW_SYSMCI (__io_address(REALVIEW_SYS_BASE) + REALVIEW_SYS_MCI_OFFSET)
 201
 202 /*
 203  * This is only used if GPIOLIB support is disabled
 204  */
 205 static unsigned int realview_mmc_status(struct device *dev)
 206 {
 207         struct amba_device *adev = container_of(dev, struct amba_device, dev);
 208         u32 mask;
 209
 210         if (machine_is_realview_pb1176()) {
 211                 static bool inserted = false;
 212
 213                 /*
 214                  * The PB1176 does not have the status register,
 215                  * assume it is inserted at startup, then invert
 216                  * for each call so card insertion/removal will
 217                  * be detected anyway. This will not be called if
 218                  * GPIO on PL061 is active, which is the proper
 219                  * way to do this on the PB1176.
 220                  */
 221                 inserted = !inserted;
 222                 return inserted ? 0 : 1;
 223         }
 224
 225         if (adev->res.start == REALVIEW_MMCI0_BASE)
 226                 mask = 1;
 227         else
 228                 mask = 2;
 229
 230         return readl(REALVIEW_SYSMCI) & mask;
 231 }
 232
 233 struct mmci_platform_data realview_mmc0_plat_data = {
 234         .ocr_mask       = MMC_VDD_32_33|MMC_VDD_33_34,
 235         .status         = realview_mmc_status,
 236         .gpio_wp        = 17,
 237         .gpio_cd        = 16,
 238         .cd_invert      = true,
 239 };
 240
 241 struct mmci_platform_data realview_mmc1_plat_data = {
 242         .ocr_mask       = MMC_VDD_32_33|MMC_VDD_33_34,
 243         .status         = realview_mmc_status,
 244         .gpio_wp        = 19,
 245         .gpio_cd        = 18,
 246         .cd_invert      = true,
 247 };
 248
 249 void __init realview_init_early(void)
 250 {
 251         void __iomem *sys = __io_address(REALVIEW_SYS_BASE);
 252
 253         versatile_sched_clock_init(sys + REALVIEW_SYS_24MHz_OFFSET, 24000000);
 254 }
 255
 256 /*
 257  * CLCD support.
 258  */
 259 #define SYS_CLCD_NLCDIOON       (1 << 2)
 260 #define SYS_CLCD_VDDPOSSWITCH   (1 << 3)
 261 #define SYS_CLCD_PWR3V5SWITCH   (1 << 4)
 262 #define SYS_CLCD_ID_MASK        (0x1f << 8)
 263 #define SYS_CLCD_ID_SANYO_3_8   (0x00 << 8)
 264 #define SYS_CLCD_ID_UNKNOWN_8_4 (0x01 << 8)
 265 #define SYS_CLCD_ID_EPSON_2_2   (0x02 << 8)
 266 #define SYS_CLCD_ID_SANYO_2_5   (0x07 << 8)
 267 #define SYS_CLCD_ID_VGA         (0x1f << 8)
 268
 269 /*
 270  * Disable all display connectors on the interface module.
 271  */
 272 static void realview_clcd_disable(struct clcd_fb *fb)
 273 {
 274         void __iomem *sys_clcd = __io_address(REALVIEW_SYS_BASE) + REALVIEW_SYS_CLCD_OFFSET;
 275         u32 val;
 276
 277         val = readl(sys_clcd);
 278         val &= ~SYS_CLCD_NLCDIOON | SYS_CLCD_PWR3V5SWITCH;
 279         writel(val, sys_clcd);
 280 }
 281
 282 /*
 283  * Enable the relevant connector on the interface module.
 284  */
 285 static void realview_clcd_enable(struct clcd_fb *fb)
 286 {
 287         void __iomem *sys_clcd = __io_address(REALVIEW_SYS_BASE) + REALVIEW_SYS_CLCD_OFFSET;
 288         u32 val;
 289
 290         /*
 291          * Enable the PSUs
 292          */
 293         val = readl(sys_clcd);
 294         val |= SYS_CLCD_NLCDIOON | SYS_CLCD_PWR3V5SWITCH;
 295         writel(val, sys_clcd);
 296 }
 297
 298 /*
 299  * Detect which LCD panel is connected, and return the appropriate
 300  * clcd_panel structure.  Note: we do not have any information on
 301  * the required timings for the 8.4in panel, so we presently assume
 302  * VGA timings.
 303  */
 304 static int realview_clcd_setup(struct clcd_fb *fb)
 305 {
 306         void __iomem *sys_clcd = __io_address(REALVIEW_SYS_BASE) + REALVIEW_SYS_CLCD_OFFSET;
 307         const char *panel_name, *vga_panel_name;
 308         unsigned long framesize;
 309         u32 val;
 310
 311         if (machine_is_realview_eb()) {
 312                 /* VGA, 16bpp */
 313                 framesize = 640 * 480 * 2;
 314                 vga_panel_name = "VGA";
 315         } else {
 316                 /* XVGA, 16bpp */
 317                 framesize = 1024 * 768 * 2;
 318                 vga_panel_name = "XVGA";
 319         }
 320
 321         val = readl(sys_clcd) & SYS_CLCD_ID_MASK;
 322         if (val == SYS_CLCD_ID_SANYO_3_8)
 323                 panel_name = "Sanyo TM38QV67A02A";
 324         else if (val == SYS_CLCD_ID_SANYO_2_5)
 325                 panel_name = "Sanyo QVGA Portrait";
 326         else if (val == SYS_CLCD_ID_EPSON_2_2)
 327                 panel_name = "Epson L2F50113T00";
 328         else if (val == SYS_CLCD_ID_VGA)
 329                 panel_name = vga_panel_name;
 330         else {
 331                 pr_err("CLCD: unknown LCD panel ID 0x%08x, using VGA\n", val);
 332                 panel_name = vga_panel_name;
 333         }
 334
 335         fb->panel = versatile_clcd_get_panel(panel_name);
 336         if (!fb->panel)
 337                 return -EINVAL;
 338
 339         return versatile_clcd_setup_dma(fb, framesize);
 340 }
 341
 342 struct clcd_board clcd_plat_data = {
 343         .name           = "RealView",
 344         .caps           = CLCD_CAP_ALL,
 345         .check          = clcdfb_check,
 346         .decode         = clcdfb_decode,
 347         .disable        = realview_clcd_disable,
 348         .enable         = realview_clcd_enable,
 349         .setup          = realview_clcd_setup,
 350         .mmap           = versatile_clcd_mmap_dma,
 351         .remove         = versatile_clcd_remove_dma,
 352 };
 353
 354 /*
 355  * Where is the timer (VA)?
 356  */
 357 void __iomem *timer0_va_base;
 358 void __iomem *timer1_va_base;
 359 void __iomem *timer2_va_base;
 360 void __iomem *timer3_va_base;
 361
 362 /*
 363  * Set up the clock source and clock events devices
 364  */
 365 void __init realview_timer_init(unsigned int timer_irq)
 366 {
 367         u32 val;
 368
 369         /*
 370          * set clock frequency:
 371          *      REALVIEW_REFCLK is 32KHz
 372          *      REALVIEW_TIMCLK is 1MHz
 373          */
 374         val = readl(__io_address(REALVIEW_SCTL_BASE));
 375         writel((REALVIEW_TIMCLK << REALVIEW_TIMER1_EnSel) |
 376                (REALVIEW_TIMCLK << REALVIEW_TIMER2_EnSel) |
 377                (REALVIEW_TIMCLK << REALVIEW_TIMER3_EnSel) |
 378                (REALVIEW_TIMCLK << REALVIEW_TIMER4_EnSel) | val,
 379                __io_address(REALVIEW_SCTL_BASE));
 380
 381         /*
 382          * Initialise to a known state (all timers off)
 383          */
 384         writel(0, timer0_va_base + TIMER_CTRL);
 385         writel(0, timer1_va_base + TIMER_CTRL);
 386         writel(0, timer2_va_base + TIMER_CTRL);
 387         writel(0, timer3_va_base + TIMER_CTRL);
 388
 389         sp804_clocksource_init(timer3_va_base, "timer3");
 390         sp804_clockevents_init(timer0_va_base, timer_irq, "timer0");
 391 }
 392
 393 /*
 394  * Setup the memory banks.
 395  */
 396 void realview_fixup(struct tag *tags, char **from)
 397 {
 398         /*
 399          * Most RealView platforms have 512MB contiguous RAM at 0x70000000.
 400          * Half of this is mirrored at 0.
 401          */
 402 #ifdef CONFIG_REALVIEW_HIGH_PHYS_OFFSET
 403         memblock_add(0x70000000, SZ_512M);
 404 #else
 405         memblock_add(0, SZ_256M);
 406 #endif
 407 }