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