v2m.c 10.0 KB
Newer Older
1 2 3 4 5 6 7 8 9
/*
 * Versatile Express V2M Motherboard Support
 */
#include <linux/device.h>
#include <linux/amba/bus.h>
#include <linux/amba/mmci.h>
#include <linux/io.h>
#include <linux/init.h>
#include <linux/platform_device.h>
10
#include <linux/ata_platform.h>
11 12
#include <linux/smsc911x.h>
#include <linux/spinlock.h>
K
Kay Sievers 已提交
13
#include <linux/device.h>
14
#include <linux/usb/isp1760.h>
15
#include <linux/clkdev.h>
16
#include <linux/mtd/physmap.h>
17

18
#include <asm/mach-types.h>
19
#include <asm/sizes.h>
20
#include <asm/mach/arch.h>
21 22 23
#include <asm/mach/map.h>
#include <asm/mach/time.h>
#include <asm/hardware/arm_timer.h>
R
Russell King 已提交
24
#include <asm/hardware/timer-sp.h>
25
#include <asm/hardware/sp810.h>
26
#include <asm/hardware/gic.h>
27

28
#include <mach/ct-ca9x4.h>
29 30
#include <mach/motherboard.h>

31
#include <plat/sched_clock.h>
32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49

#include "core.h"

#define V2M_PA_CS0	0x40000000
#define V2M_PA_CS1	0x44000000
#define V2M_PA_CS2	0x48000000
#define V2M_PA_CS3	0x4c000000
#define V2M_PA_CS7	0x10000000

static struct map_desc v2m_io_desc[] __initdata = {
	{
		.virtual	= __MMIO_P2V(V2M_PA_CS7),
		.pfn		= __phys_to_pfn(V2M_PA_CS7),
		.length		= SZ_128K,
		.type		= MT_DEVICE,
	},
};

50
static void __init v2m_timer_init(void)
51
{
52 53 54 55 56 57 58 59
	u32 scctrl;

	/* Select 1MHz TIMCLK as the reference clock for SP804 timers */
	scctrl = readl(MMIO_P2V(V2M_SYSCTL + SCCTRL));
	scctrl |= SCCTRL_TIMEREN0SEL_TIMCLK;
	scctrl |= SCCTRL_TIMEREN1SEL_TIMCLK;
	writel(scctrl, MMIO_P2V(V2M_SYSCTL + SCCTRL));

60 61 62
	writel(0, MMIO_P2V(V2M_TIMER0) + TIMER_CTRL);
	writel(0, MMIO_P2V(V2M_TIMER1) + TIMER_CTRL);

63
	sp804_clocksource_init(MMIO_P2V(V2M_TIMER1), "v2m-timer1");
64 65
	sp804_clockevents_init(MMIO_P2V(V2M_TIMER0), IRQ_V2M_TIMER0,
		"v2m-timer0");
66 67
}

68
static struct sys_timer v2m_timer = {
69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204
	.init	= v2m_timer_init,
};


static DEFINE_SPINLOCK(v2m_cfg_lock);

int v2m_cfg_write(u32 devfn, u32 data)
{
	/* Configuration interface broken? */
	u32 val;

	printk("%s: writing %08x to %08x\n", __func__, data, devfn);

	devfn |= SYS_CFG_START | SYS_CFG_WRITE;

	spin_lock(&v2m_cfg_lock);
	val = readl(MMIO_P2V(V2M_SYS_CFGSTAT));
	writel(val & ~SYS_CFG_COMPLETE, MMIO_P2V(V2M_SYS_CFGSTAT));

	writel(data, MMIO_P2V(V2M_SYS_CFGDATA));
	writel(devfn, MMIO_P2V(V2M_SYS_CFGCTRL));

	do {
		val = readl(MMIO_P2V(V2M_SYS_CFGSTAT));
	} while (val == 0);
	spin_unlock(&v2m_cfg_lock);

	return !!(val & SYS_CFG_ERR);
}

int v2m_cfg_read(u32 devfn, u32 *data)
{
	u32 val;

	devfn |= SYS_CFG_START;

	spin_lock(&v2m_cfg_lock);
	writel(0, MMIO_P2V(V2M_SYS_CFGSTAT));
	writel(devfn, MMIO_P2V(V2M_SYS_CFGCTRL));

	mb();

	do {
		cpu_relax();
		val = readl(MMIO_P2V(V2M_SYS_CFGSTAT));
	} while (val == 0);

	*data = readl(MMIO_P2V(V2M_SYS_CFGDATA));
	spin_unlock(&v2m_cfg_lock);

	return !!(val & SYS_CFG_ERR);
}


static struct resource v2m_pcie_i2c_resource = {
	.start	= V2M_SERIAL_BUS_PCI,
	.end	= V2M_SERIAL_BUS_PCI + SZ_4K - 1,
	.flags	= IORESOURCE_MEM,
};

static struct platform_device v2m_pcie_i2c_device = {
	.name		= "versatile-i2c",
	.id		= 0,
	.num_resources	= 1,
	.resource	= &v2m_pcie_i2c_resource,
};

static struct resource v2m_ddc_i2c_resource = {
	.start	= V2M_SERIAL_BUS_DVI,
	.end	= V2M_SERIAL_BUS_DVI + SZ_4K - 1,
	.flags	= IORESOURCE_MEM,
};

static struct platform_device v2m_ddc_i2c_device = {
	.name		= "versatile-i2c",
	.id		= 1,
	.num_resources	= 1,
	.resource	= &v2m_ddc_i2c_resource,
};

static struct resource v2m_eth_resources[] = {
	{
		.start	= V2M_LAN9118,
		.end	= V2M_LAN9118 + SZ_64K - 1,
		.flags	= IORESOURCE_MEM,
	}, {
		.start	= IRQ_V2M_LAN9118,
		.end	= IRQ_V2M_LAN9118,
		.flags	= IORESOURCE_IRQ,
	},
};

static struct smsc911x_platform_config v2m_eth_config = {
	.flags		= SMSC911X_USE_32BIT,
	.irq_polarity	= SMSC911X_IRQ_POLARITY_ACTIVE_HIGH,
	.irq_type	= SMSC911X_IRQ_TYPE_PUSH_PULL,
	.phy_interface	= PHY_INTERFACE_MODE_MII,
};

static struct platform_device v2m_eth_device = {
	.name		= "smsc911x",
	.id		= -1,
	.resource	= v2m_eth_resources,
	.num_resources	= ARRAY_SIZE(v2m_eth_resources),
	.dev.platform_data = &v2m_eth_config,
};

static struct resource v2m_usb_resources[] = {
	{
		.start	= V2M_ISP1761,
		.end	= V2M_ISP1761 + SZ_128K - 1,
		.flags	= IORESOURCE_MEM,
	}, {
		.start	= IRQ_V2M_ISP1761,
		.end	= IRQ_V2M_ISP1761,
		.flags	= IORESOURCE_IRQ,
	},
};

static struct isp1760_platform_data v2m_usb_config = {
	.is_isp1761		= true,
	.bus_width_16		= false,
	.port1_otg		= true,
	.analog_oc		= false,
	.dack_polarity_high	= false,
	.dreq_polarity_high	= false,
};

static struct platform_device v2m_usb_device = {
	.name		= "isp1760",
	.id		= -1,
	.resource	= v2m_usb_resources,
	.num_resources	= ARRAY_SIZE(v2m_usb_resources),
	.dev.platform_data = &v2m_usb_config,
};

205
static void v2m_flash_set_vpp(struct platform_device *pdev, int on)
206 207 208 209
{
	writel(on != 0, MMIO_P2V(V2M_SYS_FLASH));
}

210
static struct physmap_flash_data v2m_flash_data = {
211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227
	.width		= 4,
	.set_vpp	= v2m_flash_set_vpp,
};

static struct resource v2m_flash_resources[] = {
	{
		.start	= V2M_NOR0,
		.end	= V2M_NOR0 + SZ_64M - 1,
		.flags	= IORESOURCE_MEM,
	}, {
		.start	= V2M_NOR1,
		.end	= V2M_NOR1 + SZ_64M - 1,
		.flags	= IORESOURCE_MEM,
	},
};

static struct platform_device v2m_flash_device = {
228
	.name		= "physmap-flash",
229 230 231 232 233 234
	.id		= -1,
	.resource	= v2m_flash_resources,
	.num_resources	= ARRAY_SIZE(v2m_flash_resources),
	.dev.platform_data = &v2m_flash_data,
};

235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257
static struct pata_platform_info v2m_pata_data = {
	.ioport_shift	= 2,
};

static struct resource v2m_pata_resources[] = {
	{
		.start	= V2M_CF,
		.end	= V2M_CF + 0xff,
		.flags	= IORESOURCE_MEM,
	}, {
		.start	= V2M_CF + 0x100,
		.end	= V2M_CF + SZ_4K - 1,
		.flags	= IORESOURCE_MEM,
	},
};

static struct platform_device v2m_cf_device = {
	.name		= "pata_platform",
	.id		= -1,
	.resource	= v2m_pata_resources,
	.num_resources	= ARRAY_SIZE(v2m_pata_resources),
	.dev.platform_data = &v2m_pata_data,
};
258 259 260

static unsigned int v2m_mmci_status(struct device *dev)
{
261
	return readl(MMIO_P2V(V2M_SYS_MCI)) & (1 << 0);
262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317
}

static struct mmci_platform_data v2m_mmci_data = {
	.ocr_mask	= MMC_VDD_32_33|MMC_VDD_33_34,
	.status		= v2m_mmci_status,
};

static AMBA_DEVICE(aaci,  "mb:aaci",  V2M_AACI, NULL);
static AMBA_DEVICE(mmci,  "mb:mmci",  V2M_MMCI, &v2m_mmci_data);
static AMBA_DEVICE(kmi0,  "mb:kmi0",  V2M_KMI0, NULL);
static AMBA_DEVICE(kmi1,  "mb:kmi1",  V2M_KMI1, NULL);
static AMBA_DEVICE(uart0, "mb:uart0", V2M_UART0, NULL);
static AMBA_DEVICE(uart1, "mb:uart1", V2M_UART1, NULL);
static AMBA_DEVICE(uart2, "mb:uart2", V2M_UART2, NULL);
static AMBA_DEVICE(uart3, "mb:uart3", V2M_UART3, NULL);
static AMBA_DEVICE(wdt,   "mb:wdt",   V2M_WDT, NULL);
static AMBA_DEVICE(rtc,   "mb:rtc",   V2M_RTC, NULL);

static struct amba_device *v2m_amba_devs[] __initdata = {
	&aaci_device,
	&mmci_device,
	&kmi0_device,
	&kmi1_device,
	&uart0_device,
	&uart1_device,
	&uart2_device,
	&uart3_device,
	&wdt_device,
	&rtc_device,
};


static long v2m_osc_round(struct clk *clk, unsigned long rate)
{
	return rate;
}

static int v2m_osc1_set(struct clk *clk, unsigned long rate)
{
	return v2m_cfg_write(SYS_CFG_OSC | SYS_CFG_SITE_MB | 1, rate);
}

static const struct clk_ops osc1_clk_ops = {
	.round	= v2m_osc_round,
	.set	= v2m_osc1_set,
};

static struct clk osc1_clk = {
	.ops	= &osc1_clk_ops,
	.rate	= 24000000,
};

static struct clk osc2_clk = {
	.rate	= 24000000,
};

318 319 320 321
static struct clk v2m_sp804_clk = {
	.rate	= 1000000,
};

322 323 324 325
static struct clk v2m_ref_clk = {
	.rate   = 32768,
};

326 327
static struct clk dummy_apb_pclk;

328
static struct clk_lookup v2m_lookups[] = {
329 330 331 332
	{	/* AMBA bus clock */
		.con_id		= "apb_pclk",
		.clk		= &dummy_apb_pclk,
	}, {	/* UART0 */
333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355
		.dev_id		= "mb:uart0",
		.clk		= &osc2_clk,
	}, {	/* UART1 */
		.dev_id		= "mb:uart1",
		.clk		= &osc2_clk,
	}, {	/* UART2 */
		.dev_id		= "mb:uart2",
		.clk		= &osc2_clk,
	}, {	/* UART3 */
		.dev_id		= "mb:uart3",
		.clk		= &osc2_clk,
	}, {	/* KMI0 */
		.dev_id		= "mb:kmi0",
		.clk		= &osc2_clk,
	}, {	/* KMI1 */
		.dev_id		= "mb:kmi1",
		.clk		= &osc2_clk,
	}, {	/* MMC0 */
		.dev_id		= "mb:mmci",
		.clk		= &osc2_clk,
	}, {	/* CLCD */
		.dev_id		= "mb:clcd",
		.clk		= &osc1_clk,
356 357 358
	}, {	/* SP805 WDT */
		.dev_id		= "mb:wdt",
		.clk		= &v2m_ref_clk,
359 360 361 362
	}, {	/* SP804 timers */
		.dev_id		= "sp804",
		.con_id		= "v2m-timer0",
		.clk		= &v2m_sp804_clk,
363 364 365 366
	}, {	/* SP804 timers */
		.dev_id		= "sp804",
		.con_id		= "v2m-timer1",
		.clk		= &v2m_sp804_clk,
367 368 369
	},
};

370 371 372 373 374 375 376
static void __init v2m_init_early(void)
{
	ct_desc->init_early();
	clkdev_add_table(v2m_lookups, ARRAY_SIZE(v2m_lookups));
	versatile_sched_clock_init(MMIO_P2V(V2M_SYS_24MHZ), 24000000);
}

377 378 379 380 381 382 383 384 385 386 387 388
static void v2m_power_off(void)
{
	if (v2m_cfg_write(SYS_CFG_SHUTDOWN | SYS_CFG_SITE_MB, 0))
		printk(KERN_EMERG "Unable to shutdown\n");
}

static void v2m_restart(char str, const char *cmd)
{
	if (v2m_cfg_write(SYS_CFG_REBOOT | SYS_CFG_SITE_MB, 0))
		printk(KERN_EMERG "Unable to reboot\n");
}

389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426
struct ct_desc *ct_desc;

static struct ct_desc *ct_descs[] __initdata = {
#ifdef CONFIG_ARCH_VEXPRESS_CA9X4
	&ct_ca9x4_desc,
#endif
};

static void __init v2m_populate_ct_desc(void)
{
	int i;
	u32 current_tile_id;

	ct_desc = NULL;
	current_tile_id = readl(MMIO_P2V(V2M_SYS_PROCID0)) & V2M_CT_ID_MASK;

	for (i = 0; i < ARRAY_SIZE(ct_descs) && !ct_desc; ++i)
		if (ct_descs[i]->id == current_tile_id)
			ct_desc = ct_descs[i];

	if (!ct_desc)
		panic("vexpress: failed to populate core tile description "
		      "for tile ID 0x%8x\n", current_tile_id);
}

static void __init v2m_map_io(void)
{
	iotable_init(v2m_io_desc, ARRAY_SIZE(v2m_io_desc));
	v2m_populate_ct_desc();
	ct_desc->map_io();
}

static void __init v2m_init_irq(void)
{
	ct_desc->init_irq();
}

static void __init v2m_init(void)
427 428 429 430 431 432
{
	int i;

	platform_device_register(&v2m_pcie_i2c_device);
	platform_device_register(&v2m_ddc_i2c_device);
	platform_device_register(&v2m_flash_device);
433
	platform_device_register(&v2m_cf_device);
434 435 436 437 438 439 440 441
	platform_device_register(&v2m_eth_device);
	platform_device_register(&v2m_usb_device);

	for (i = 0; i < ARRAY_SIZE(v2m_amba_devs); i++)
		amba_device_register(v2m_amba_devs[i], &iomem_resource);

	pm_power_off = v2m_power_off;

442
	ct_desc->init_tile();
443
}
444 445

MACHINE_START(VEXPRESS, "ARM-Versatile Express")
446
	.atag_offset	= 0x100,
447 448 449 450
	.map_io		= v2m_map_io,
	.init_early	= v2m_init_early,
	.init_irq	= v2m_init_irq,
	.timer		= &v2m_timer,
451
	.handle_irq	= gic_handle_irq,
452
	.init_machine	= v2m_init,
453
	.restart	= v2m_restart,
454
MACHINE_END