| 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 | } |