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 #include "hardware.h"
  40 #include <asm/irq.h>
  41 #include <asm/mach-types.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 #include "platform.h"
  49
  50 #include <plat/sched_clock.h>
  51
  52 #include "core.h"
  53
  54 #define REALVIEW_FLASHCTRL    (__io_address(REALVIEW_SYS_BASE) + REALVIEW_SYS_FLASH_OFFSET)
  55
  56 static void realview_flash_set_vpp(struct platform_device *pdev, int on)
  57 {
  58         u32 val;
  59
  60         val = __raw_readl(REALVIEW_FLASHCTRL);
  61         if (on)
  62                 val |= REALVIEW_FLASHPROG_FLVPPEN;
  63         else
  64                 val &= ~REALVIEW_FLASHPROG_FLVPPEN;
  65         __raw_writel(val, REALVIEW_FLASHCTRL);
  66 }
  67
  68 static struct physmap_flash_data realview_flash_data = {
  69         .width                  = 4,
  70         .set_vpp                = realview_flash_set_vpp,
  71 };
  72
  73 struct platform_device realview_flash_device = {
  74         .name                   = "physmap-flash",
  75         .id                     = 0,
  76         .dev                    = {
  77                 .platform_data  = &realview_flash_data,
  78         },
  79 };
  80
  81 int realview_flash_register(struct resource *res, u32 num)
  82 {
  83         realview_flash_device.resource = res;
  84         realview_flash_device.num_resources = num;
  85         return platform_device_register(&realview_flash_device);
  86 }
  87
  88 static struct smsc911x_platform_config smsc911x_config = {
  89         .flags          = SMSC911X_USE_32BIT,
  90         .irq_polarity   = SMSC911X_IRQ_POLARITY_ACTIVE_HIGH,
  91         .irq_type       = SMSC911X_IRQ_TYPE_PUSH_PULL,
  92         .phy_interface  = PHY_INTERFACE_MODE_MII,
  93 };
  94
  95 static struct smc91x_platdata smc91x_platdata = {
  96         .flags = SMC91X_USE_8BIT | SMC91X_USE_16BIT | SMC91X_USE_32BIT |
  97                  SMC91X_NOWAIT,
  98 };
  99
 100 static struct platform_device realview_eth_device = {
 101         .name           = "smsc911x",
 102         .id             = 0,
 103         .num_resources  = 2,
 104 };
 105
 106 int realview_eth_register(const char *name, struct resource *res)
 107 {
 108         if (name)
 109                 realview_eth_device.name = name;
 110         realview_eth_device.resource = res;
 111         if (strcmp(realview_eth_device.name, "smsc911x") == 0)
 112                 realview_eth_device.dev.platform_data = &smsc911x_config;
 113         else
 114                 realview_eth_device.dev.platform_data = &smc91x_platdata;
 115
 116         return platform_device_register(&realview_eth_device);
 117 }
 118
 119 struct platform_device realview_usb_device = {
 120         .name                   = "isp1760",
 121         .num_resources          = 2,
 122 };
 123
 124 int realview_usb_register(struct resource *res)
 125 {
 126         realview_usb_device.resource = res;
 127         return platform_device_register(&realview_usb_device);
 128 }
 129
 130 static struct pata_platform_info pata_platform_data = {
 131         .ioport_shift           = 1,
 132 };
 133
 134 static struct resource pata_resources[] = {
 135         [0] = {
 136                 .start          = REALVIEW_CF_BASE,
 137                 .end            = REALVIEW_CF_BASE + 0xff,
 138                 .flags          = IORESOURCE_MEM,
 139         },
 140         [1] = {
 141                 .start          = REALVIEW_CF_BASE + 0x100,
 142                 .end            = REALVIEW_CF_BASE + SZ_4K - 1,
 143                 .flags          = IORESOURCE_MEM,
 144         },
 145 };
 146
 147 struct platform_device realview_cf_device = {
 148         .name                   = "pata_platform",
 149         .id                     = -1,
 150         .num_resources          = ARRAY_SIZE(pata_resources),
 151         .resource               = pata_resources,
 152         .dev                    = {
 153                 .platform_data  = &pata_platform_data,
 154         },
 155 };
 156
 157 static struct resource realview_leds_resources[] = {
 158         {
 159                 .start  = REALVIEW_SYS_BASE + REALVIEW_SYS_LED_OFFSET,
 160                 .end    = REALVIEW_SYS_BASE + REALVIEW_SYS_LED_OFFSET + 4,
 161                 .flags  = IORESOURCE_MEM,
 162         },
 163 };
 164
 165 struct platform_device realview_leds_device = {
 166         .name           = "versatile-leds",
 167         .id             = -1,
 168         .num_resources  = ARRAY_SIZE(realview_leds_resources),
 169         .resource       = realview_leds_resources,
 170 };
 171
 172 static struct resource realview_i2c_resource = {
 173         .start          = REALVIEW_I2C_BASE,
 174         .end            = REALVIEW_I2C_BASE + SZ_4K - 1,
 175         .flags          = IORESOURCE_MEM,
 176 };
 177
 178 struct platform_device realview_i2c_device = {
 179         .name           = "versatile-i2c",
 180         .id             = 0,
 181         .num_resources  = 1,
 182         .resource       = &realview_i2c_resource,
 183 };
 184
 185 static struct i2c_board_info realview_i2c_board_info[] = {
 186         {
 187                 I2C_BOARD_INFO("ds1338", 0xd0 >> 1),
 188         },
 189 };
 190
 191 static int __init realview_i2c_init(void)
 192 {
 193         return i2c_register_board_info(0, realview_i2c_board_info,
 194                                        ARRAY_SIZE(realview_i2c_board_info));
 195 }
 196 arch_initcall(realview_i2c_init);
 197
 198 #define REALVIEW_SYSMCI (__io_address(REALVIEW_SYS_BASE) + REALVIEW_SYS_MCI_OFFSET)
 199
 200 /*
 201  * This is only used if GPIOLIB support is disabled
 202  */
 203 static unsigned int realview_mmc_status(struct device *dev)
 204 {
 205         struct amba_device *adev = container_of(dev, struct amba_device, dev);
 206         u32 mask;
 207
 208         if (machine_is_realview_pb1176()) {
 209                 static bool inserted = false;
 210
 211                 /*
 212                  * The PB1176 does not have the status register,
 213                  * assume it is inserted at startup, then invert
 214                  * for each call so card insertion/removal will
 215                  * be detected anyway. This will not be called if
 216                  * GPIO on PL061 is active, which is the proper
 217                  * way to do this on the PB1176.
 218                  */
 219                 inserted = !inserted;
 220                 return inserted ? 0 : 1;
 221         }
 222
 223         if (adev->res.start == REALVIEW_MMCI0_BASE)
 224                 mask = 1;
 225         else
 226                 mask = 2;
 227
 228         return readl(REALVIEW_SYSMCI) & mask;
 229 }
 230
 231 struct mmci_platform_data realview_mmc0_plat_data = {
 232         .ocr_mask       = MMC_VDD_32_33|MMC_VDD_33_34,
 233         .status         = realview_mmc_status,
 234         .gpio_wp        = 17,
 235         .gpio_cd        = 16,
 236         .cd_invert      = true,
 237 };
 238
 239 struct mmci_platform_data realview_mmc1_plat_data = {
 240         .ocr_mask       = MMC_VDD_32_33|MMC_VDD_33_34,
 241         .status         = realview_mmc_status,
 242         .gpio_wp        = 19,
 243         .gpio_cd        = 18,
 244         .cd_invert      = true,
 245 };
 246
 247 void __init realview_init_early(void)
 248 {
 249         void __iomem *sys = __io_address(REALVIEW_SYS_BASE);
 250
 251         versatile_sched_clock_init(sys + REALVIEW_SYS_24MHz_OFFSET, 24000000);
 252 }
 253
 254 /*
 255  * CLCD support.
 256  */
 257 #define SYS_CLCD_NLCDIOON       (1 << 2)
 258 #define SYS_CLCD_VDDPOSSWITCH   (1 << 3)
 259 #define SYS_CLCD_PWR3V5SWITCH   (1 << 4)
 260 #define SYS_CLCD_ID_MASK        (0x1f << 8)
 261 #define SYS_CLCD_ID_SANYO_3_8   (0x00 << 8)
 262 #define SYS_CLCD_ID_UNKNOWN_8_4 (0x01 << 8)
 263 #define SYS_CLCD_ID_EPSON_2_2   (0x02 << 8)
 264 #define SYS_CLCD_ID_SANYO_2_5   (0x07 << 8)
 265 #define SYS_CLCD_ID_VGA         (0x1f << 8)
 266
 267 /*
 268  * Disable all display connectors on the interface module.
 269  */
 270 static void realview_clcd_disable(struct clcd_fb *fb)
 271 {
 272         void __iomem *sys_clcd = __io_address(REALVIEW_SYS_BASE) + REALVIEW_SYS_CLCD_OFFSET;
 273         u32 val;
 274
 275         val = readl(sys_clcd);
 276         val &= ~SYS_CLCD_NLCDIOON | SYS_CLCD_PWR3V5SWITCH;
 277         writel(val, sys_clcd);
 278 }
 279
 280 /*
 281  * Enable the relevant connector on the interface module.
 282  */
 283 static void realview_clcd_enable(struct clcd_fb *fb)
 284 {
 285         void __iomem *sys_clcd = __io_address(REALVIEW_SYS_BASE) + REALVIEW_SYS_CLCD_OFFSET;
 286         u32 val;
 287
 288         /*
 289          * Enable the PSUs
 290          */
 291         val = readl(sys_clcd);
 292         val |= SYS_CLCD_NLCDIOON | SYS_CLCD_PWR3V5SWITCH;
 293         writel(val, sys_clcd);
 294 }
 295
 296 /*
 297  * Detect which LCD panel is connected, and return the appropriate
 298  * clcd_panel structure.  Note: we do not have any information on
 299  * the required timings for the 8.4in panel, so we presently assume
 300  * VGA timings.
 301  */
 302 static int realview_clcd_setup(struct clcd_fb *fb)
 303 {
 304         void __iomem *sys_clcd = __io_address(REALVIEW_SYS_BASE) + REALVIEW_SYS_CLCD_OFFSET;
 305         const char *panel_name, *vga_panel_name;
 306         unsigned long framesize;
 307         u32 val;
 308
 309         if (machine_is_realview_eb()) {
 310                 /* VGA, 16bpp */
 311                 framesize = 640 * 480 * 2;
 312                 vga_panel_name = "VGA";
 313         } else {
 314                 /* XVGA, 16bpp */
 315                 framesize = 1024 * 768 * 2;
 316                 vga_panel_name = "XVGA";
 317         }
 318
 319         val = readl(sys_clcd) & SYS_CLCD_ID_MASK;
 320         if (val == SYS_CLCD_ID_SANYO_3_8)
 321                 panel_name = "Sanyo TM38QV67A02A";
 322         else if (val == SYS_CLCD_ID_SANYO_2_5)
 323                 panel_name = "Sanyo QVGA Portrait";
 324         else if (val == SYS_CLCD_ID_EPSON_2_2)
 325                 panel_name = "Epson L2F50113T00";
 326         else if (val == SYS_CLCD_ID_VGA)
 327                 panel_name = vga_panel_name;
 328         else {
 329                 pr_err("CLCD: unknown LCD panel ID 0x%08x, using VGA\n", val);
 330                 panel_name = vga_panel_name;
 331         }
 332
 333         fb->panel = versatile_clcd_get_panel(panel_name);
 334         if (!fb->panel)
 335                 return -EINVAL;
 336
 337         return versatile_clcd_setup_dma(fb, framesize);
 338 }
 339
 340 struct clcd_board clcd_plat_data = {
 341         .name           = "RealView",
 342         .caps           = CLCD_CAP_ALL,
 343         .check          = clcdfb_check,
 344         .decode         = clcdfb_decode,
 345         .disable        = realview_clcd_disable,
 346         .enable         = realview_clcd_enable,
 347         .setup          = realview_clcd_setup,
 348         .mmap           = versatile_clcd_mmap_dma,
 349         .remove         = versatile_clcd_remove_dma,
 350 };
 351
 352 /*
 353  * Where is the timer (VA)?
 354  */
 355 void __iomem *timer0_va_base;
 356 void __iomem *timer1_va_base;
 357 void __iomem *timer2_va_base;
 358 void __iomem *timer3_va_base;
 359
 360 /*
 361  * Set up the clock source and clock events devices
 362  */
 363 void __init realview_timer_init(unsigned int timer_irq)
 364 {
 365         u32 val;
 366
 367         /*
 368          * set clock frequency:
 369          *      REALVIEW_REFCLK is 32KHz
 370          *      REALVIEW_TIMCLK is 1MHz
 371          */
 372         val = readl(__io_address(REALVIEW_SCTL_BASE));
 373         writel((REALVIEW_TIMCLK << REALVIEW_TIMER1_EnSel) |
 374                (REALVIEW_TIMCLK << REALVIEW_TIMER2_EnSel) |
 375                (REALVIEW_TIMCLK << REALVIEW_TIMER3_EnSel) |
 376                (REALVIEW_TIMCLK << REALVIEW_TIMER4_EnSel) | val,
 377                __io_address(REALVIEW_SCTL_BASE));
 378
 379         /*
 380          * Initialise to a known state (all timers off)
 381          */
 382         sp804_timer_disable(timer0_va_base);
 383         sp804_timer_disable(timer1_va_base);
 384         sp804_timer_disable(timer2_va_base);
 385         sp804_timer_disable(timer3_va_base);
 386
 387         sp804_clocksource_init(timer3_va_base, "timer3");
 388         sp804_clockevents_init(timer0_va_base, timer_irq, "timer0");
 389 }
 390
 391 /*
 392  * Setup the memory banks.
 393  */
 394 void realview_fixup(struct tag *tags, char **from)
 395 {
 396         /*
 397          * Most RealView platforms have 512MB contiguous RAM at 0x70000000.
 398          * Half of this is mirrored at 0.
 399          */
 400 #ifdef CONFIG_REALVIEW_HIGH_PHYS_OFFSET
 401         memblock_add(0x70000000, SZ_512M);
 402 #else
 403         memblock_add(0, SZ_256M);
 404 #endif
 405 }