2 * linux/arch/arm/mach-versatile/core.c
4 * Copyright (C) 1999 - 2003 ARM Limited
5 * Copyright (C) 2000 Deep Blue Solutions Ltd
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.
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.
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
21 #include <linux/init.h>
22 #include <linux/device.h>
23 #include <linux/dma-mapping.h>
24 #include <linux/platform_device.h>
25 #include <linux/interrupt.h>
26 #include <linux/irqdomain.h>
27 #include <linux/of_address.h>
28 #include <linux/of_platform.h>
29 #include <linux/amba/bus.h>
30 #include <linux/amba/clcd.h>
31 #include <linux/amba/pl061.h>
32 #include <linux/amba/mmci.h>
33 #include <linux/amba/pl022.h>
35 #include <linux/gfp.h>
36 #include <linux/clkdev.h>
37 #include <linux/mtd/physmap.h>
41 #include <asm/hardware/arm_timer.h>
42 #include <asm/hardware/icst.h>
43 #include <asm/hardware/vic.h>
44 #include <asm/mach-types.h>
46 #include <asm/mach/arch.h>
47 #include <asm/mach/irq.h>
48 #include <asm/mach/time.h>
49 #include <asm/mach/map.h>
50 #include <mach/hardware.h>
51 #include <mach/platform.h>
52 #include <asm/hardware/timer-sp.h>
54 #include <plat/clcd.h>
55 #include <plat/fpga-irq.h>
56 #include <plat/sched_clock.h>
61 * All IO addresses are mapped onto VA 0xFFFx.xxxx, where x.xxxx
64 * Setup a VA for the Versatile Vectored Interrupt Controller.
66 #define VA_VIC_BASE __io_address(VERSATILE_VIC_BASE)
67 #define VA_SIC_BASE __io_address(VERSATILE_SIC_BASE)
70 #define IRQ_MMCI0A IRQ_VICSOURCE22
71 #define IRQ_AACI IRQ_VICSOURCE24
72 #define IRQ_ETH IRQ_VICSOURCE25
73 #define PIC_MASK 0xFFD00000
75 #define IRQ_MMCI0A IRQ_SIC_MMCI0A
76 #define IRQ_AACI IRQ_SIC_AACI
77 #define IRQ_ETH IRQ_SIC_ETH
81 /* Lookup table for finding a DT node that represents the vic instance */
82 static const struct of_device_id vic_of_match[] __initconst = {
83 { .compatible = "arm,versatile-vic", },
87 static const struct of_device_id sic_of_match[] __initconst = {
88 { .compatible = "arm,versatile-sic", },
92 void __init versatile_init_irq(void)
94 struct device_node *np;
96 np = of_find_matching_node_by_address(NULL, vic_of_match,
98 __vic_init(VA_VIC_BASE, IRQ_VIC_START, ~0, 0, np);
100 writel(~0, VA_SIC_BASE + SIC_IRQ_ENABLE_CLEAR);
102 np = of_find_matching_node_by_address(NULL, sic_of_match,
105 fpga_irq_init(VA_SIC_BASE, "SIC", IRQ_SIC_START,
106 IRQ_VICSOURCE31, ~PIC_MASK, np);
109 * Interrupts on secondary controller from 0 to 8 are routed to
111 * Interrupts from 21 to 31 are routed directly to the VIC on
112 * the corresponding number on primary controller. This is controlled
113 * by setting PIC_ENABLEx.
115 writel(PIC_MASK, VA_SIC_BASE + SIC_INT_PIC_ENABLE);
118 static struct map_desc versatile_io_desc[] __initdata = {
120 .virtual = IO_ADDRESS(VERSATILE_SYS_BASE),
121 .pfn = __phys_to_pfn(VERSATILE_SYS_BASE),
125 .virtual = IO_ADDRESS(VERSATILE_SIC_BASE),
126 .pfn = __phys_to_pfn(VERSATILE_SIC_BASE),
130 .virtual = IO_ADDRESS(VERSATILE_VIC_BASE),
131 .pfn = __phys_to_pfn(VERSATILE_VIC_BASE),
135 .virtual = IO_ADDRESS(VERSATILE_SCTL_BASE),
136 .pfn = __phys_to_pfn(VERSATILE_SCTL_BASE),
140 #ifdef CONFIG_MACH_VERSATILE_AB
142 .virtual = IO_ADDRESS(VERSATILE_IB2_BASE),
143 .pfn = __phys_to_pfn(VERSATILE_IB2_BASE),
148 #ifdef CONFIG_DEBUG_LL
150 .virtual = IO_ADDRESS(VERSATILE_UART0_BASE),
151 .pfn = __phys_to_pfn(VERSATILE_UART0_BASE),
158 .virtual = IO_ADDRESS(VERSATILE_PCI_CORE_BASE),
159 .pfn = __phys_to_pfn(VERSATILE_PCI_CORE_BASE),
163 .virtual = (unsigned long)VERSATILE_PCI_VIRT_BASE,
164 .pfn = __phys_to_pfn(VERSATILE_PCI_BASE),
165 .length = VERSATILE_PCI_BASE_SIZE,
168 .virtual = (unsigned long)VERSATILE_PCI_CFG_VIRT_BASE,
169 .pfn = __phys_to_pfn(VERSATILE_PCI_CFG_BASE),
170 .length = VERSATILE_PCI_CFG_BASE_SIZE,
175 .virtual = VERSATILE_PCI_VIRT_MEM_BASE0,
176 .pfn = __phys_to_pfn(VERSATILE_PCI_MEM_BASE0),
180 .virtual = VERSATILE_PCI_VIRT_MEM_BASE1,
181 .pfn = __phys_to_pfn(VERSATILE_PCI_MEM_BASE1),
185 .virtual = VERSATILE_PCI_VIRT_MEM_BASE2,
186 .pfn = __phys_to_pfn(VERSATILE_PCI_MEM_BASE2),
194 void __init versatile_map_io(void)
196 iotable_init(versatile_io_desc, ARRAY_SIZE(versatile_io_desc));
200 #define VERSATILE_FLASHCTRL (__io_address(VERSATILE_SYS_BASE) + VERSATILE_SYS_FLASH_OFFSET)
202 static void versatile_flash_set_vpp(struct platform_device *pdev, int on)
206 val = __raw_readl(VERSATILE_FLASHCTRL);
208 val |= VERSATILE_FLASHPROG_FLVPPEN;
210 val &= ~VERSATILE_FLASHPROG_FLVPPEN;
211 __raw_writel(val, VERSATILE_FLASHCTRL);
214 static struct physmap_flash_data versatile_flash_data = {
216 .set_vpp = versatile_flash_set_vpp,
219 static struct resource versatile_flash_resource = {
220 .start = VERSATILE_FLASH_BASE,
221 .end = VERSATILE_FLASH_BASE + VERSATILE_FLASH_SIZE - 1,
222 .flags = IORESOURCE_MEM,
225 static struct platform_device versatile_flash_device = {
226 .name = "physmap-flash",
229 .platform_data = &versatile_flash_data,
232 .resource = &versatile_flash_resource,
235 static struct resource smc91x_resources[] = {
237 .start = VERSATILE_ETH_BASE,
238 .end = VERSATILE_ETH_BASE + SZ_64K - 1,
239 .flags = IORESOURCE_MEM,
244 .flags = IORESOURCE_IRQ,
248 static struct platform_device smc91x_device = {
251 .num_resources = ARRAY_SIZE(smc91x_resources),
252 .resource = smc91x_resources,
255 static struct resource versatile_i2c_resource = {
256 .start = VERSATILE_I2C_BASE,
257 .end = VERSATILE_I2C_BASE + SZ_4K - 1,
258 .flags = IORESOURCE_MEM,
261 static struct platform_device versatile_i2c_device = {
262 .name = "versatile-i2c",
265 .resource = &versatile_i2c_resource,
268 static struct i2c_board_info versatile_i2c_board_info[] = {
270 I2C_BOARD_INFO("ds1338", 0xd0 >> 1),
274 static int __init versatile_i2c_init(void)
276 return i2c_register_board_info(0, versatile_i2c_board_info,
277 ARRAY_SIZE(versatile_i2c_board_info));
279 arch_initcall(versatile_i2c_init);
281 #define VERSATILE_SYSMCI (__io_address(VERSATILE_SYS_BASE) + VERSATILE_SYS_MCI_OFFSET)
283 unsigned int mmc_status(struct device *dev)
285 struct amba_device *adev = container_of(dev, struct amba_device, dev);
288 if (adev->res.start == VERSATILE_MMCI0_BASE)
293 return readl(VERSATILE_SYSMCI) & mask;
296 static struct mmci_platform_data mmc0_plat_data = {
297 .ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34,
298 .status = mmc_status,
303 static struct resource char_lcd_resources[] = {
305 .start = VERSATILE_CHAR_LCD_BASE,
306 .end = (VERSATILE_CHAR_LCD_BASE + SZ_4K - 1),
307 .flags = IORESOURCE_MEM,
311 static struct platform_device char_lcd_device = {
312 .name = "arm-charlcd",
314 .num_resources = ARRAY_SIZE(char_lcd_resources),
315 .resource = char_lcd_resources,
321 static const struct icst_params versatile_oscvco_params = {
323 .vco_max = ICST307_VCO_MAX,
324 .vco_min = ICST307_VCO_MIN,
329 .s2div = icst307_s2div,
330 .idx2s = icst307_idx2s,
333 static void versatile_oscvco_set(struct clk *clk, struct icst_vco vco)
335 void __iomem *sys_lock = __io_address(VERSATILE_SYS_BASE) + VERSATILE_SYS_LOCK_OFFSET;
338 val = readl(clk->vcoreg) & ~0x7ffff;
339 val |= vco.v | (vco.r << 9) | (vco.s << 16);
341 writel(0xa05f, sys_lock);
342 writel(val, clk->vcoreg);
346 static const struct clk_ops osc4_clk_ops = {
347 .round = icst_clk_round,
349 .setvco = versatile_oscvco_set,
352 static struct clk osc4_clk = {
353 .ops = &osc4_clk_ops,
354 .params = &versatile_oscvco_params,
358 * These are fixed clocks.
360 static struct clk ref24_clk = {
364 static struct clk sp804_clk = {
368 static struct clk dummy_apb_pclk;
370 static struct clk_lookup lookups[] = {
371 { /* AMBA bus clock */
372 .con_id = "apb_pclk",
373 .clk = &dummy_apb_pclk,
404 }, { /* SP804 timers */
413 #define SYS_CLCD_MODE_MASK (3 << 0)
414 #define SYS_CLCD_MODE_888 (0 << 0)
415 #define SYS_CLCD_MODE_5551 (1 << 0)
416 #define SYS_CLCD_MODE_565_RLSB (2 << 0)
417 #define SYS_CLCD_MODE_565_BLSB (3 << 0)
418 #define SYS_CLCD_NLCDIOON (1 << 2)
419 #define SYS_CLCD_VDDPOSSWITCH (1 << 3)
420 #define SYS_CLCD_PWR3V5SWITCH (1 << 4)
421 #define SYS_CLCD_ID_MASK (0x1f << 8)
422 #define SYS_CLCD_ID_SANYO_3_8 (0x00 << 8)
423 #define SYS_CLCD_ID_UNKNOWN_8_4 (0x01 << 8)
424 #define SYS_CLCD_ID_EPSON_2_2 (0x02 << 8)
425 #define SYS_CLCD_ID_SANYO_2_5 (0x07 << 8)
426 #define SYS_CLCD_ID_VGA (0x1f << 8)
428 static bool is_sanyo_2_5_lcd;
431 * Disable all display connectors on the interface module.
433 static void versatile_clcd_disable(struct clcd_fb *fb)
435 void __iomem *sys_clcd = __io_address(VERSATILE_SYS_BASE) + VERSATILE_SYS_CLCD_OFFSET;
438 val = readl(sys_clcd);
439 val &= ~SYS_CLCD_NLCDIOON | SYS_CLCD_PWR3V5SWITCH;
440 writel(val, sys_clcd);
442 #ifdef CONFIG_MACH_VERSATILE_AB
444 * If the LCD is Sanyo 2x5 in on the IB2 board, turn the back-light off
446 if (machine_is_versatile_ab() && is_sanyo_2_5_lcd) {
447 void __iomem *versatile_ib2_ctrl = __io_address(VERSATILE_IB2_CTRL);
450 ctrl = readl(versatile_ib2_ctrl);
452 writel(ctrl, versatile_ib2_ctrl);
458 * Enable the relevant connector on the interface module.
460 static void versatile_clcd_enable(struct clcd_fb *fb)
462 struct fb_var_screeninfo *var = &fb->fb.var;
463 void __iomem *sys_clcd = __io_address(VERSATILE_SYS_BASE) + VERSATILE_SYS_CLCD_OFFSET;
466 val = readl(sys_clcd);
467 val &= ~SYS_CLCD_MODE_MASK;
469 switch (var->green.length) {
471 val |= SYS_CLCD_MODE_5551;
474 if (var->red.offset == 0)
475 val |= SYS_CLCD_MODE_565_RLSB;
477 val |= SYS_CLCD_MODE_565_BLSB;
480 val |= SYS_CLCD_MODE_888;
487 writel(val, sys_clcd);
490 * And now enable the PSUs
492 val |= SYS_CLCD_NLCDIOON | SYS_CLCD_PWR3V5SWITCH;
493 writel(val, sys_clcd);
495 #ifdef CONFIG_MACH_VERSATILE_AB
497 * If the LCD is Sanyo 2x5 in on the IB2 board, turn the back-light on
499 if (machine_is_versatile_ab() && is_sanyo_2_5_lcd) {
500 void __iomem *versatile_ib2_ctrl = __io_address(VERSATILE_IB2_CTRL);
503 ctrl = readl(versatile_ib2_ctrl);
505 writel(ctrl, versatile_ib2_ctrl);
511 * Detect which LCD panel is connected, and return the appropriate
512 * clcd_panel structure. Note: we do not have any information on
513 * the required timings for the 8.4in panel, so we presently assume
516 static int versatile_clcd_setup(struct clcd_fb *fb)
518 void __iomem *sys_clcd = __io_address(VERSATILE_SYS_BASE) + VERSATILE_SYS_CLCD_OFFSET;
519 const char *panel_name;
522 is_sanyo_2_5_lcd = false;
524 val = readl(sys_clcd) & SYS_CLCD_ID_MASK;
525 if (val == SYS_CLCD_ID_SANYO_3_8)
526 panel_name = "Sanyo TM38QV67A02A";
527 else if (val == SYS_CLCD_ID_SANYO_2_5) {
528 panel_name = "Sanyo QVGA Portrait";
529 is_sanyo_2_5_lcd = true;
530 } else if (val == SYS_CLCD_ID_EPSON_2_2)
531 panel_name = "Epson L2F50113T00";
532 else if (val == SYS_CLCD_ID_VGA)
535 printk(KERN_ERR "CLCD: unknown LCD panel ID 0x%08x, using VGA\n",
540 fb->panel = versatile_clcd_get_panel(panel_name);
544 return versatile_clcd_setup_dma(fb, SZ_1M);
547 static void versatile_clcd_decode(struct clcd_fb *fb, struct clcd_regs *regs)
549 clcdfb_decode(fb, regs);
551 /* Always clear BGR for RGB565: we do the routing externally */
552 if (fb->fb.var.green.length == 6)
553 regs->cntl &= ~CNTL_BGR;
556 static struct clcd_board clcd_plat_data = {
558 .caps = CLCD_CAP_5551 | CLCD_CAP_565 | CLCD_CAP_888,
559 .check = clcdfb_check,
560 .decode = versatile_clcd_decode,
561 .disable = versatile_clcd_disable,
562 .enable = versatile_clcd_enable,
563 .setup = versatile_clcd_setup,
564 .mmap = versatile_clcd_mmap_dma,
565 .remove = versatile_clcd_remove_dma,
568 static struct pl061_platform_data gpio0_plat_data = {
570 .irq_base = IRQ_GPIO0_START,
573 static struct pl061_platform_data gpio1_plat_data = {
575 .irq_base = IRQ_GPIO1_START,
578 static struct pl022_ssp_controller ssp0_plat_data = {
584 #define AACI_IRQ { IRQ_AACI }
585 #define MMCI0_IRQ { IRQ_MMCI0A,IRQ_SIC_MMCI0B }
586 #define KMI0_IRQ { IRQ_SIC_KMI0 }
587 #define KMI1_IRQ { IRQ_SIC_KMI1 }
590 * These devices are connected directly to the multi-layer AHB switch
594 #define CLCD_IRQ { IRQ_CLCDINT }
595 #define DMAC_IRQ { IRQ_DMAINT }
598 * These devices are connected via the core APB bridge
601 #define WATCHDOG_IRQ { IRQ_WDOGINT }
602 #define GPIO0_IRQ { IRQ_GPIOINT0 }
603 #define GPIO1_IRQ { IRQ_GPIOINT1 }
604 #define RTC_IRQ { IRQ_RTCINT }
607 * These devices are connected via the DMA APB bridge
609 #define SCI_IRQ { IRQ_SCIINT }
610 #define UART0_IRQ { IRQ_UARTINT0 }
611 #define UART1_IRQ { IRQ_UARTINT1 }
612 #define UART2_IRQ { IRQ_UARTINT2 }
613 #define SSP_IRQ { IRQ_SSPINT }
615 /* FPGA Primecells */
616 APB_DEVICE(aaci, "fpga:04", AACI, NULL);
617 APB_DEVICE(mmc0, "fpga:05", MMCI0, &mmc0_plat_data);
618 APB_DEVICE(kmi0, "fpga:06", KMI0, NULL);
619 APB_DEVICE(kmi1, "fpga:07", KMI1, NULL);
621 /* DevChip Primecells */
622 AHB_DEVICE(smc, "dev:00", SMC, NULL);
623 AHB_DEVICE(mpmc, "dev:10", MPMC, NULL);
624 AHB_DEVICE(clcd, "dev:20", CLCD, &clcd_plat_data);
625 AHB_DEVICE(dmac, "dev:30", DMAC, NULL);
626 APB_DEVICE(sctl, "dev:e0", SCTL, NULL);
627 APB_DEVICE(wdog, "dev:e1", WATCHDOG, NULL);
628 APB_DEVICE(gpio0, "dev:e4", GPIO0, &gpio0_plat_data);
629 APB_DEVICE(gpio1, "dev:e5", GPIO1, &gpio1_plat_data);
630 APB_DEVICE(rtc, "dev:e8", RTC, NULL);
631 APB_DEVICE(sci0, "dev:f0", SCI, NULL);
632 APB_DEVICE(uart0, "dev:f1", UART0, NULL);
633 APB_DEVICE(uart1, "dev:f2", UART1, NULL);
634 APB_DEVICE(uart2, "dev:f3", UART2, NULL);
635 APB_DEVICE(ssp0, "dev:f4", SSP, &ssp0_plat_data);
637 static struct amba_device *amba_devs[] __initdata = {
660 * Lookup table for attaching a specific name and platform_data pointer to
661 * devices as they get created by of_platform_populate(). Ideally this table
662 * would not exist, but the current clock implementation depends on some devices
663 * having a specific name.
665 struct of_dev_auxdata versatile_auxdata_lookup[] __initdata = {
666 OF_DEV_AUXDATA("arm,primecell", VERSATILE_MMCI0_BASE, "fpga:05", &mmc0_plat_data),
667 OF_DEV_AUXDATA("arm,primecell", VERSATILE_KMI0_BASE, "fpga:06", NULL),
668 OF_DEV_AUXDATA("arm,primecell", VERSATILE_KMI1_BASE, "fpga:07", NULL),
669 OF_DEV_AUXDATA("arm,primecell", VERSATILE_UART3_BASE, "fpga:09", NULL),
670 /* FIXME: this is buggy, the platform data is needed for this MMC instance too */
671 OF_DEV_AUXDATA("arm,primecell", VERSATILE_MMCI1_BASE, "fpga:0b", NULL),
673 OF_DEV_AUXDATA("arm,primecell", VERSATILE_CLCD_BASE, "dev:20", &clcd_plat_data),
674 OF_DEV_AUXDATA("arm,primecell", VERSATILE_UART0_BASE, "dev:f1", NULL),
675 OF_DEV_AUXDATA("arm,primecell", VERSATILE_UART1_BASE, "dev:f2", NULL),
676 OF_DEV_AUXDATA("arm,primecell", VERSATILE_UART2_BASE, "dev:f3", NULL),
677 OF_DEV_AUXDATA("arm,primecell", VERSATILE_SSP_BASE, "dev:f4", &ssp0_plat_data),
681 * These entries are unnecessary because no clocks referencing
682 * them. I've left them in for now as place holders in case
683 * any of them need to be added back, but they should be
684 * removed before actually committing this patch. --gcl
686 OF_DEV_AUXDATA("arm,primecell", VERSATILE_AACI_BASE, "fpga:04", NULL),
687 OF_DEV_AUXDATA("arm,primecell", VERSATILE_SCI1_BASE, "fpga:0a", NULL),
688 OF_DEV_AUXDATA("arm,primecell", VERSATILE_SMC_BASE, "dev:00", NULL),
689 OF_DEV_AUXDATA("arm,primecell", VERSATILE_MPMC_BASE, "dev:10", NULL),
690 OF_DEV_AUXDATA("arm,primecell", VERSATILE_DMAC_BASE, "dev:30", NULL),
692 OF_DEV_AUXDATA("arm,primecell", VERSATILE_SCTL_BASE, "dev:e0", NULL),
693 OF_DEV_AUXDATA("arm,primecell", VERSATILE_WATCHDOG_BASE, "dev:e1", NULL),
694 OF_DEV_AUXDATA("arm,primecell", VERSATILE_GPIO0_BASE, "dev:e4", NULL),
695 OF_DEV_AUXDATA("arm,primecell", VERSATILE_GPIO1_BASE, "dev:e5", NULL),
696 OF_DEV_AUXDATA("arm,primecell", VERSATILE_GPIO2_BASE, "dev:e6", NULL),
697 OF_DEV_AUXDATA("arm,primecell", VERSATILE_GPIO3_BASE, "dev:e7", NULL),
698 OF_DEV_AUXDATA("arm,primecell", VERSATILE_RTC_BASE, "dev:e8", NULL),
699 OF_DEV_AUXDATA("arm,primecell", VERSATILE_SCI_BASE, "dev:f0", NULL),
706 #define VA_LEDS_BASE (__io_address(VERSATILE_SYS_BASE) + VERSATILE_SYS_LED_OFFSET)
708 static void versatile_leds_event(led_event_t ledevt)
713 local_irq_save(flags);
714 val = readl(VA_LEDS_BASE);
718 val = val & ~VERSATILE_SYS_LED0;
722 val = val | VERSATILE_SYS_LED0;
726 val = val ^ VERSATILE_SYS_LED1;
737 writel(val, VA_LEDS_BASE);
738 local_irq_restore(flags);
740 #endif /* CONFIG_LEDS */
742 void versatile_restart(char mode, const char *cmd)
744 void __iomem *sys = __io_address(VERSATILE_SYS_BASE);
747 val = __raw_readl(sys + VERSATILE_SYS_RESETCTL_OFFSET);
750 __raw_writel(0xa05f, sys + VERSATILE_SYS_LOCK_OFFSET);
751 __raw_writel(val, sys + VERSATILE_SYS_RESETCTL_OFFSET);
752 __raw_writel(0, sys + VERSATILE_SYS_LOCK_OFFSET);
755 /* Early initializations */
756 void __init versatile_init_early(void)
758 void __iomem *sys = __io_address(VERSATILE_SYS_BASE);
760 osc4_clk.vcoreg = sys + VERSATILE_SYS_OSCCLCD_OFFSET;
761 clkdev_add_table(lookups, ARRAY_SIZE(lookups));
763 versatile_sched_clock_init(sys + VERSATILE_SYS_24MHz_OFFSET, 24000000);
766 void __init versatile_init(void)
770 platform_device_register(&versatile_flash_device);
771 platform_device_register(&versatile_i2c_device);
772 platform_device_register(&smc91x_device);
773 platform_device_register(&char_lcd_device);
775 for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
776 struct amba_device *d = amba_devs[i];
777 amba_device_register(d, &iomem_resource);
781 leds_event = versatile_leds_event;
786 * Where is the timer (VA)?
788 #define TIMER0_VA_BASE __io_address(VERSATILE_TIMER0_1_BASE)
789 #define TIMER1_VA_BASE (__io_address(VERSATILE_TIMER0_1_BASE) + 0x20)
790 #define TIMER2_VA_BASE __io_address(VERSATILE_TIMER2_3_BASE)
791 #define TIMER3_VA_BASE (__io_address(VERSATILE_TIMER2_3_BASE) + 0x20)
794 * Set up timer interrupt, and return the current time in seconds.
796 static void __init versatile_timer_init(void)
801 * set clock frequency:
802 * VERSATILE_REFCLK is 32KHz
803 * VERSATILE_TIMCLK is 1MHz
805 val = readl(__io_address(VERSATILE_SCTL_BASE));
806 writel((VERSATILE_TIMCLK << VERSATILE_TIMER1_EnSel) |
807 (VERSATILE_TIMCLK << VERSATILE_TIMER2_EnSel) |
808 (VERSATILE_TIMCLK << VERSATILE_TIMER3_EnSel) |
809 (VERSATILE_TIMCLK << VERSATILE_TIMER4_EnSel) | val,
810 __io_address(VERSATILE_SCTL_BASE));
813 * Initialise to a known state (all timers off)
815 writel(0, TIMER0_VA_BASE + TIMER_CTRL);
816 writel(0, TIMER1_VA_BASE + TIMER_CTRL);
817 writel(0, TIMER2_VA_BASE + TIMER_CTRL);
818 writel(0, TIMER3_VA_BASE + TIMER_CTRL);
820 sp804_clocksource_init(TIMER3_VA_BASE, "timer3");
821 sp804_clockevents_init(TIMER0_VA_BASE, IRQ_TIMERINT0_1, "timer0");
824 struct sys_timer versatile_timer = {
825 .init = versatile_timer_init,