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
  35 #include <mach/hardware.h>
  36 #include <asm/irq.h>
  37 #include <asm/mach-types.h>
  38 #include <asm/hardware/arm_timer.h>
  39 #include <asm/hardware/icst.h>
  40
  41 #include <asm/mach/arch.h>
  42 #include <asm/mach/irq.h>
  43 #include <asm/mach/map.h>
  44
  45 #include <asm/hardware/gic.h>
  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_i2c_resource = {
 153         .start          = REALVIEW_I2C_BASE,
 154         .end            = REALVIEW_I2C_BASE + SZ_4K - 1,
 155         .flags          = IORESOURCE_MEM,
 156 };
 157
 158 struct platform_device realview_i2c_device = {
 159         .name           = "versatile-i2c",
 160         .id             = 0,
 161         .num_resources  = 1,
 162         .resource       = &realview_i2c_resource,
 163 };
 164
 165 static struct i2c_board_info realview_i2c_board_info[] = {
 166         {
 167                 I2C_BOARD_INFO("ds1338", 0xd0 >> 1),
 168         },
 169 };
 170
 171 static int __init realview_i2c_init(void)
 172 {
 173         return i2c_register_board_info(0, realview_i2c_board_info,
 174                                        ARRAY_SIZE(realview_i2c_board_info));
 175 }
 176 arch_initcall(realview_i2c_init);
 177
 178 #define REALVIEW_SYSMCI (__io_address(REALVIEW_SYS_BASE) + REALVIEW_SYS_MCI_OFFSET)
 179
 180 /*
 181  * This is only used if GPIOLIB support is disabled
 182  */
 183 static unsigned int realview_mmc_status(struct device *dev)
 184 {
 185         struct amba_device *adev = container_of(dev, struct amba_device, dev);
 186         u32 mask;
 187
 188         if (machine_is_realview_pb1176()) {
 189                 static bool inserted = false;
 190
 191                 /*
 192                  * The PB1176 does not have the status register,
 193                  * assume it is inserted at startup, then invert
 194                  * for each call so card insertion/removal will
 195                  * be detected anyway. This will not be called if
 196                  * GPIO on PL061 is active, which is the proper
 197                  * way to do this on the PB1176.
 198                  */
 199                 inserted = !inserted;
 200                 return inserted ? 0 : 1;
 201         }
 202
 203         if (adev->res.start == REALVIEW_MMCI0_BASE)
 204                 mask = 1;
 205         else
 206                 mask = 2;
 207
 208         return readl(REALVIEW_SYSMCI) & mask;
 209 }
 210
 211 struct mmci_platform_data realview_mmc0_plat_data = {
 212         .ocr_mask       = MMC_VDD_32_33|MMC_VDD_33_34,
 213         .status         = realview_mmc_status,
 214         .gpio_wp        = 17,
 215         .gpio_cd        = 16,
 216         .cd_invert      = true,
 217 };
 218
 219 struct mmci_platform_data realview_mmc1_plat_data = {
 220         .ocr_mask       = MMC_VDD_32_33|MMC_VDD_33_34,
 221         .status         = realview_mmc_status,
 222         .gpio_wp        = 19,
 223         .gpio_cd        = 18,
 224         .cd_invert      = true,
 225 };
 226
 227 void __init realview_init_early(void)
 228 {
 229         void __iomem *sys = __io_address(REALVIEW_SYS_BASE);
 230
 231         versatile_sched_clock_init(sys + REALVIEW_SYS_24MHz_OFFSET, 24000000);
 232 }
 233
 234 /*
 235  * CLCD support.
 236  */
 237 #define SYS_CLCD_NLCDIOON       (1 << 2)
 238 #define SYS_CLCD_VDDPOSSWITCH   (1 << 3)
 239 #define SYS_CLCD_PWR3V5SWITCH   (1 << 4)
 240 #define SYS_CLCD_ID_MASK        (0x1f << 8)
 241 #define SYS_CLCD_ID_SANYO_3_8   (0x00 << 8)
 242 #define SYS_CLCD_ID_UNKNOWN_8_4 (0x01 << 8)
 243 #define SYS_CLCD_ID_EPSON_2_2   (0x02 << 8)
 244 #define SYS_CLCD_ID_SANYO_2_5   (0x07 << 8)
 245 #define SYS_CLCD_ID_VGA         (0x1f << 8)
 246
 247 /*
 248  * Disable all display connectors on the interface module.
 249  */
 250 static void realview_clcd_disable(struct clcd_fb *fb)
 251 {
 252         void __iomem *sys_clcd = __io_address(REALVIEW_SYS_BASE) + REALVIEW_SYS_CLCD_OFFSET;
 253         u32 val;
 254
 255         val = readl(sys_clcd);
 256         val &= ~SYS_CLCD_NLCDIOON | SYS_CLCD_PWR3V5SWITCH;
 257         writel(val, sys_clcd);
 258 }
 259
 260 /*
 261  * Enable the relevant connector on the interface module.
 262  */
 263 static void realview_clcd_enable(struct clcd_fb *fb)
 264 {
 265         void __iomem *sys_clcd = __io_address(REALVIEW_SYS_BASE) + REALVIEW_SYS_CLCD_OFFSET;
 266         u32 val;
 267
 268         /*
 269          * Enable the PSUs
 270          */
 271         val = readl(sys_clcd);
 272         val |= SYS_CLCD_NLCDIOON | SYS_CLCD_PWR3V5SWITCH;
 273         writel(val, sys_clcd);
 274 }
 275
 276 /*
 277  * Detect which LCD panel is connected, and return the appropriate
 278  * clcd_panel structure.  Note: we do not have any information on
 279  * the required timings for the 8.4in panel, so we presently assume
 280  * VGA timings.
 281  */
 282 static int realview_clcd_setup(struct clcd_fb *fb)
 283 {
 284         void __iomem *sys_clcd = __io_address(REALVIEW_SYS_BASE) + REALVIEW_SYS_CLCD_OFFSET;
 285         const char *panel_name, *vga_panel_name;
 286         unsigned long framesize;
 287         u32 val;
 288
 289         if (machine_is_realview_eb()) {
 290                 /* VGA, 16bpp */
 291                 framesize = 640 * 480 * 2;
 292                 vga_panel_name = "VGA";
 293         } else {
 294                 /* XVGA, 16bpp */
 295                 framesize = 1024 * 768 * 2;
 296                 vga_panel_name = "XVGA";
 297         }
 298
 299         val = readl(sys_clcd) & SYS_CLCD_ID_MASK;
 300         if (val == SYS_CLCD_ID_SANYO_3_8)
 301                 panel_name = "Sanyo TM38QV67A02A";
 302         else if (val == SYS_CLCD_ID_SANYO_2_5)
 303                 panel_name = "Sanyo QVGA Portrait";
 304         else if (val == SYS_CLCD_ID_EPSON_2_2)
 305                 panel_name = "Epson L2F50113T00";
 306         else if (val == SYS_CLCD_ID_VGA)
 307                 panel_name = vga_panel_name;
 308         else {
 309                 pr_err("CLCD: unknown LCD panel ID 0x%08x, using VGA\n", val);
 310                 panel_name = vga_panel_name;
 311         }
 312
 313         fb->panel = versatile_clcd_get_panel(panel_name);
 314         if (!fb->panel)
 315                 return -EINVAL;
 316
 317         return versatile_clcd_setup_dma(fb, framesize);
 318 }
 319
 320 struct clcd_board clcd_plat_data = {
 321         .name           = "RealView",
 322         .caps           = CLCD_CAP_ALL,
 323         .check          = clcdfb_check,
 324         .decode         = clcdfb_decode,
 325         .disable        = realview_clcd_disable,
 326         .enable         = realview_clcd_enable,
 327         .setup          = realview_clcd_setup,
 328         .mmap           = versatile_clcd_mmap_dma,
 329         .remove         = versatile_clcd_remove_dma,
 330 };
 331
 332 /*
 333  * Where is the timer (VA)?
 334  */
 335 void __iomem *timer0_va_base;
 336 void __iomem *timer1_va_base;
 337 void __iomem *timer2_va_base;
 338 void __iomem *timer3_va_base;
 339
 340 /*
 341  * Set up the clock source and clock events devices
 342  */
 343 void __init realview_timer_init(unsigned int timer_irq)
 344 {
 345         u32 val;
 346
 347         /*
 348          * set clock frequency:
 349          *      REALVIEW_REFCLK is 32KHz
 350          *      REALVIEW_TIMCLK is 1MHz
 351          */
 352         val = readl(__io_address(REALVIEW_SCTL_BASE));
 353         writel((REALVIEW_TIMCLK << REALVIEW_TIMER1_EnSel) |
 354                (REALVIEW_TIMCLK << REALVIEW_TIMER2_EnSel) |
 355                (REALVIEW_TIMCLK << REALVIEW_TIMER3_EnSel) |
 356                (REALVIEW_TIMCLK << REALVIEW_TIMER4_EnSel) | val,
 357                __io_address(REALVIEW_SCTL_BASE));
 358
 359         /*
 360          * Initialise to a known state (all timers off)
 361          */
 362         writel(0, timer0_va_base + TIMER_CTRL);
 363         writel(0, timer1_va_base + TIMER_CTRL);
 364         writel(0, timer2_va_base + TIMER_CTRL);
 365         writel(0, timer3_va_base + TIMER_CTRL);
 366
 367         sp804_clocksource_init(timer3_va_base, "timer3");
 368         sp804_clockevents_init(timer0_va_base, timer_irq, "timer0");
 369 }
 370
 371 /*
 372  * Setup the memory banks.
 373  */
 374 void realview_fixup(struct tag *tags, char **from, struct meminfo *meminfo)
 375 {
 376         /*
 377          * Most RealView platforms have 512MB contiguous RAM at 0x70000000.
 378          * Half of this is mirrored at 0.
 379          */
 380 #ifdef CONFIG_REALVIEW_HIGH_PHYS_OFFSET
 381         meminfo->bank[0].start = 0x70000000;
 382         meminfo->bank[0].size = SZ_512M;
 383         meminfo->nr_banks = 1;
 384 #else
 385         meminfo->bank[0].start = 0;
 386         meminfo->bank[0].size = SZ_256M;
 387         meminfo->nr_banks = 1;
 388 #endif
 389 }