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 <clocksource/timer-sp804.h>
  39
  40 #include <mach/hardware.h>
  41 #include <asm/irq.h>
  42 #include <asm/mach-types.h>
  43 #include <asm/hardware/icst.h>
  44
  45 #include <asm/mach/arch.h>
  46 #include <asm/mach/irq.h>
  47 #include <asm/mach/map.h>
  48
  49 #include <mach/platform.h>
  50 #include <mach/irqs.h>
  51
  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 smc91x_platdata smc91x_platdata = {
  98         .flags = SMC91X_USE_32BIT | SMC91X_NOWAIT,
  99 };
 100
 101 static struct platform_device realview_eth_device = {
 102         .name           = "smsc911x",
 103         .id             = 0,
 104         .num_resources  = 2,
 105 };
 106
 107 int realview_eth_register(const char *name, struct resource *res)
 108 {
 109         if (name)
 110                 realview_eth_device.name = name;
 111         realview_eth_device.resource = res;
 112         if (strcmp(realview_eth_device.name, "smsc911x") == 0)
 113                 realview_eth_device.dev.platform_data = &smsc911x_config;
 114         else
 115                 realview_eth_device.dev.platform_data = &smc91x_platdata;
 116
 117         return platform_device_register(&realview_eth_device);
 118 }
 119
 120 struct platform_device realview_usb_device = {
 121         .name                   = "isp1760",
 122         .num_resources          = 2,
 123 };
 124
 125 int realview_usb_register(struct resource *res)
 126 {
 127         realview_usb_device.resource = res;
 128         return platform_device_register(&realview_usb_device);
 129 }
 130
 131 static struct pata_platform_info pata_platform_data = {
 132         .ioport_shift           = 1,
 133 };
 134
 135 static struct resource pata_resources[] = {
 136         [0] = {
 137                 .start          = REALVIEW_CF_BASE,
 138                 .end            = REALVIEW_CF_BASE + 0xff,
 139                 .flags          = IORESOURCE_MEM,
 140         },
 141         [1] = {
 142                 .start          = REALVIEW_CF_BASE + 0x100,
 143                 .end            = REALVIEW_CF_BASE + SZ_4K - 1,
 144                 .flags          = IORESOURCE_MEM,
 145         },
 146 };
 147
 148 struct platform_device realview_cf_device = {
 149         .name                   = "pata_platform",
 150         .id                     = -1,
 151         .num_resources          = ARRAY_SIZE(pata_resources),
 152         .resource               = pata_resources,
 153         .dev                    = {
 154                 .platform_data  = &pata_platform_data,
 155         },
 156 };
 157
 158 static struct resource realview_leds_resources[] = {
 159         {
 160                 .start  = REALVIEW_SYS_BASE + REALVIEW_SYS_LED_OFFSET,
 161                 .end    = REALVIEW_SYS_BASE + REALVIEW_SYS_LED_OFFSET + 4,
 162                 .flags  = IORESOURCE_MEM,
 163         },
 164 };
 165
 166 struct platform_device realview_leds_device = {
 167         .name           = "versatile-leds",
 168         .id             = -1,
 169         .num_resources  = ARRAY_SIZE(realview_leds_resources),
 170         .resource       = realview_leds_resources,
 171 };
 172
 173 static struct resource realview_i2c_resource = {
 174         .start          = REALVIEW_I2C_BASE,
 175         .end            = REALVIEW_I2C_BASE + SZ_4K - 1,
 176         .flags          = IORESOURCE_MEM,
 177 };
 178
 179 struct platform_device realview_i2c_device = {
 180         .name           = "versatile-i2c",
 181         .id             = 0,
 182         .num_resources  = 1,
 183         .resource       = &realview_i2c_resource,
 184 };
 185
 186 static struct i2c_board_info realview_i2c_board_info[] = {
 187         {
 188                 I2C_BOARD_INFO("ds1338", 0xd0 >> 1),
 189         },
 190 };
 191
 192 static int __init realview_i2c_init(void)
 193 {
 194         return i2c_register_board_info(0, realview_i2c_board_info,
 195                                        ARRAY_SIZE(realview_i2c_board_info));
 196 }
 197 arch_initcall(realview_i2c_init);
 198
 199 #define REALVIEW_SYSMCI (__io_address(REALVIEW_SYS_BASE) + REALVIEW_SYS_MCI_OFFSET)
 200
 201 /*
 202  * This is only used if GPIOLIB support is disabled
 203  */
 204 static unsigned int realview_mmc_status(struct device *dev)
 205 {
 206         struct amba_device *adev = container_of(dev, struct amba_device, dev);
 207         u32 mask;
 208
 209         if (machine_is_realview_pb1176()) {
 210                 static bool inserted = false;
 211
 212                 /*
 213                  * The PB1176 does not have the status register,
 214                  * assume it is inserted at startup, then invert
 215                  * for each call so card insertion/removal will
 216                  * be detected anyway. This will not be called if
 217                  * GPIO on PL061 is active, which is the proper
 218                  * way to do this on the PB1176.
 219                  */
 220                 inserted = !inserted;
 221                 return inserted ? 0 : 1;
 222         }
 223
 224         if (adev->res.start == REALVIEW_MMCI0_BASE)
 225                 mask = 1;
 226         else
 227                 mask = 2;
 228
 229         return readl(REALVIEW_SYSMCI) & mask;
 230 }
 231
 232 struct mmci_platform_data realview_mmc0_plat_data = {
 233         .ocr_mask       = MMC_VDD_32_33|MMC_VDD_33_34,
 234         .status         = realview_mmc_status,
 235         .gpio_wp        = 17,
 236         .gpio_cd        = 16,
 237         .cd_invert      = true,
 238 };
 239
 240 struct mmci_platform_data realview_mmc1_plat_data = {
 241         .ocr_mask       = MMC_VDD_32_33|MMC_VDD_33_34,
 242         .status         = realview_mmc_status,
 243         .gpio_wp        = 19,
 244         .gpio_cd        = 18,
 245         .cd_invert      = true,
 246 };
 247
 248 void __init realview_init_early(void)
 249 {
 250         void __iomem *sys = __io_address(REALVIEW_SYS_BASE);
 251
 252         versatile_sched_clock_init(sys + REALVIEW_SYS_24MHz_OFFSET, 24000000);
 253 }
 254
 255 /*
 256  * CLCD support.
 257  */
 258 #define SYS_CLCD_NLCDIOON       (1 << 2)
 259 #define SYS_CLCD_VDDPOSSWITCH   (1 << 3)
 260 #define SYS_CLCD_PWR3V5SWITCH   (1 << 4)
 261 #define SYS_CLCD_ID_MASK        (0x1f << 8)
 262 #define SYS_CLCD_ID_SANYO_3_8   (0x00 << 8)
 263 #define SYS_CLCD_ID_UNKNOWN_8_4 (0x01 << 8)
 264 #define SYS_CLCD_ID_EPSON_2_2   (0x02 << 8)
 265 #define SYS_CLCD_ID_SANYO_2_5   (0x07 << 8)
 266 #define SYS_CLCD_ID_VGA         (0x1f << 8)
 267
 268 /*
 269  * Disable all display connectors on the interface module.
 270  */
 271 static void realview_clcd_disable(struct clcd_fb *fb)
 272 {
 273         void __iomem *sys_clcd = __io_address(REALVIEW_SYS_BASE) + REALVIEW_SYS_CLCD_OFFSET;
 274         u32 val;
 275
 276         val = readl(sys_clcd);
 277         val &= ~SYS_CLCD_NLCDIOON | SYS_CLCD_PWR3V5SWITCH;
 278         writel(val, sys_clcd);
 279 }
 280
 281 /*
 282  * Enable the relevant connector on the interface module.
 283  */
 284 static void realview_clcd_enable(struct clcd_fb *fb)
 285 {
 286         void __iomem *sys_clcd = __io_address(REALVIEW_SYS_BASE) + REALVIEW_SYS_CLCD_OFFSET;
 287         u32 val;
 288
 289         /*
 290          * Enable the PSUs
 291          */
 292         val = readl(sys_clcd);
 293         val |= SYS_CLCD_NLCDIOON | SYS_CLCD_PWR3V5SWITCH;
 294         writel(val, sys_clcd);
 295 }
 296
 297 /*
 298  * Detect which LCD panel is connected, and return the appropriate
 299  * clcd_panel structure.  Note: we do not have any information on
 300  * the required timings for the 8.4in panel, so we presently assume
 301  * VGA timings.
 302  */
 303 static int realview_clcd_setup(struct clcd_fb *fb)
 304 {
 305         void __iomem *sys_clcd = __io_address(REALVIEW_SYS_BASE) + REALVIEW_SYS_CLCD_OFFSET;
 306         const char *panel_name, *vga_panel_name;
 307         unsigned long framesize;
 308         u32 val;
 309
 310         if (machine_is_realview_eb()) {
 311                 /* VGA, 16bpp */
 312                 framesize = 640 * 480 * 2;
 313                 vga_panel_name = "VGA";
 314         } else {
 315                 /* XVGA, 16bpp */
 316                 framesize = 1024 * 768 * 2;
 317                 vga_panel_name = "XVGA";
 318         }
 319
 320         val = readl(sys_clcd) & SYS_CLCD_ID_MASK;
 321         if (val == SYS_CLCD_ID_SANYO_3_8)
 322                 panel_name = "Sanyo TM38QV67A02A";
 323         else if (val == SYS_CLCD_ID_SANYO_2_5)
 324                 panel_name = "Sanyo QVGA Portrait";
 325         else if (val == SYS_CLCD_ID_EPSON_2_2)
 326                 panel_name = "Epson L2F50113T00";
 327         else if (val == SYS_CLCD_ID_VGA)
 328                 panel_name = vga_panel_name;
 329         else {
 330                 pr_err("CLCD: unknown LCD panel ID 0x%08x, using VGA\n", val);
 331                 panel_name = vga_panel_name;
 332         }
 333
 334         fb->panel = versatile_clcd_get_panel(panel_name);
 335         if (!fb->panel)
 336                 return -EINVAL;
 337
 338         return versatile_clcd_setup_dma(fb, framesize);
 339 }
 340
 341 struct clcd_board clcd_plat_data = {
 342         .name           = "RealView",
 343         .caps           = CLCD_CAP_ALL,
 344         .check          = clcdfb_check,
 345         .decode         = clcdfb_decode,
 346         .disable        = realview_clcd_disable,
 347         .enable         = realview_clcd_enable,
 348         .setup          = realview_clcd_setup,
 349         .mmap           = versatile_clcd_mmap_dma,
 350         .remove         = versatile_clcd_remove_dma,
 351 };
 352
 353 /*
 354  * Where is the timer (VA)?
 355  */
 356 void __iomem *timer0_va_base;
 357 void __iomem *timer1_va_base;
 358 void __iomem *timer2_va_base;
 359 void __iomem *timer3_va_base;
 360
 361 /*
 362  * Set up the clock source and clock events devices
 363  */
 364 void __init realview_timer_init(unsigned int timer_irq)
 365 {
 366         u32 val;
 367
 368         /*
 369          * set clock frequency:
 370          *      REALVIEW_REFCLK is 32KHz
 371          *      REALVIEW_TIMCLK is 1MHz
 372          */
 373         val = readl(__io_address(REALVIEW_SCTL_BASE));
 374         writel((REALVIEW_TIMCLK << REALVIEW_TIMER1_EnSel) |
 375                (REALVIEW_TIMCLK << REALVIEW_TIMER2_EnSel) |
 376                (REALVIEW_TIMCLK << REALVIEW_TIMER3_EnSel) |
 377                (REALVIEW_TIMCLK << REALVIEW_TIMER4_EnSel) | val,
 378                __io_address(REALVIEW_SCTL_BASE));
 379
 380         /*
 381          * Initialise to a known state (all timers off)
 382          */
 383         sp804_timer_disable(timer0_va_base);
 384         sp804_timer_disable(timer1_va_base);
 385         sp804_timer_disable(timer2_va_base);
 386         sp804_timer_disable(timer3_va_base);
 387
 388         sp804_clocksource_init(timer3_va_base, "timer3");
 389         sp804_clockevents_init(timer0_va_base, timer_irq, "timer0");
 390 }
 391
 392 /*
 393  * Setup the memory banks.
 394  */
 395 void realview_fixup(struct tag *tags, char **from)
 396 {
 397         /*
 398          * Most RealView platforms have 512MB contiguous RAM at 0x70000000.
 399          * Half of this is mirrored at 0.
 400          */
 401 #ifdef CONFIG_REALVIEW_HIGH_PHYS_OFFSET
 402         memblock_add(0x70000000, SZ_512M);
 403 #else
 404         memblock_add(0, SZ_256M);
 405 #endif
 406 }