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/irqchip/arm-vic.h>
36 #include <linux/irqchip/versatile-fpga.h>
37 #include <linux/gfp.h>
38 #include <linux/clkdev.h>
39 #include <linux/mtd/physmap.h>
40 #include <linux/bitops.h>
41 #include <linux/reboot.h>
44 #include <asm/hardware/arm_timer.h>
45 #include <asm/hardware/icst.h>
46 #include <asm/mach-types.h>
48 #include <asm/mach/arch.h>
49 #include <asm/mach/irq.h>
50 #include <asm/mach/time.h>
51 #include <asm/mach/map.h>
52 #include <mach/hardware.h>
53 #include <mach/platform.h>
54 #include <asm/hardware/timer-sp.h>
56 #include <plat/clcd.h>
57 #include <plat/sched_clock.h>
62 * All IO addresses are mapped onto VA 0xFFFx.xxxx, where x.xxxx
65 * Setup a VA for the Versatile Vectored Interrupt Controller.
67 #define VA_VIC_BASE __io_address(VERSATILE_VIC_BASE)
68 #define VA_SIC_BASE __io_address(VERSATILE_SIC_BASE)
70 /* These PIC IRQs are valid in each configuration */
71 #define PIC_VALID_ALL BIT(SIC_INT_KMI0) | BIT(SIC_INT_KMI1) | \
72 BIT(SIC_INT_SCI3) | BIT(SIC_INT_UART3) | \
73 BIT(SIC_INT_CLCD) | BIT(SIC_INT_TOUCH) | \
74 BIT(SIC_INT_KEYPAD) | BIT(SIC_INT_DoC) | \
75 BIT(SIC_INT_USB) | BIT(SIC_INT_PCI0) | \
76 BIT(SIC_INT_PCI1) | BIT(SIC_INT_PCI2) | \
79 #define IRQ_MMCI0A IRQ_VICSOURCE22
80 #define IRQ_AACI IRQ_VICSOURCE24
81 #define IRQ_ETH IRQ_VICSOURCE25
82 #define PIC_MASK 0xFFD00000
83 #define PIC_VALID PIC_VALID_ALL
85 #define IRQ_MMCI0A IRQ_SIC_MMCI0A
86 #define IRQ_AACI IRQ_SIC_AACI
87 #define IRQ_ETH IRQ_SIC_ETH
89 #define PIC_VALID PIC_VALID_ALL | BIT(SIC_INT_MMCI0A) | \
90 BIT(SIC_INT_MMCI1A) | BIT(SIC_INT_AACI) | \
94 /* Lookup table for finding a DT node that represents the vic instance */
95 static const struct of_device_id vic_of_match
[] __initconst
= {
96 { .compatible
= "arm,versatile-vic", },
100 static const struct of_device_id sic_of_match
[] __initconst
= {
101 { .compatible
= "arm,versatile-sic", },
105 void __init
versatile_init_irq(void)
107 struct device_node
*np
;
109 np
= of_find_matching_node_by_address(NULL
, vic_of_match
,
111 __vic_init(VA_VIC_BASE
, IRQ_VIC_START
, ~0, 0, np
);
113 writel(~0, VA_SIC_BASE
+ SIC_IRQ_ENABLE_CLEAR
);
115 np
= of_find_matching_node_by_address(NULL
, sic_of_match
,
118 fpga_irq_init(VA_SIC_BASE
, "SIC", IRQ_SIC_START
,
119 IRQ_VICSOURCE31
, PIC_VALID
, np
);
122 * Interrupts on secondary controller from 0 to 8 are routed to
124 * Interrupts from 21 to 31 are routed directly to the VIC on
125 * the corresponding number on primary controller. This is controlled
126 * by setting PIC_ENABLEx.
128 writel(PIC_MASK
, VA_SIC_BASE
+ SIC_INT_PIC_ENABLE
);
131 static struct map_desc versatile_io_desc
[] __initdata __maybe_unused
= {
133 .virtual = IO_ADDRESS(VERSATILE_SYS_BASE
),
134 .pfn
= __phys_to_pfn(VERSATILE_SYS_BASE
),
138 .virtual = IO_ADDRESS(VERSATILE_SIC_BASE
),
139 .pfn
= __phys_to_pfn(VERSATILE_SIC_BASE
),
143 .virtual = IO_ADDRESS(VERSATILE_VIC_BASE
),
144 .pfn
= __phys_to_pfn(VERSATILE_VIC_BASE
),
148 .virtual = IO_ADDRESS(VERSATILE_SCTL_BASE
),
149 .pfn
= __phys_to_pfn(VERSATILE_SCTL_BASE
),
153 #ifdef CONFIG_MACH_VERSATILE_AB
155 .virtual = IO_ADDRESS(VERSATILE_IB2_BASE
),
156 .pfn
= __phys_to_pfn(VERSATILE_IB2_BASE
),
161 #ifdef CONFIG_DEBUG_LL
163 .virtual = IO_ADDRESS(VERSATILE_UART0_BASE
),
164 .pfn
= __phys_to_pfn(VERSATILE_UART0_BASE
),
171 .virtual = IO_ADDRESS(VERSATILE_PCI_CORE_BASE
),
172 .pfn
= __phys_to_pfn(VERSATILE_PCI_CORE_BASE
),
176 .virtual = (unsigned long)VERSATILE_PCI_VIRT_BASE
,
177 .pfn
= __phys_to_pfn(VERSATILE_PCI_BASE
),
178 .length
= VERSATILE_PCI_BASE_SIZE
,
181 .virtual = (unsigned long)VERSATILE_PCI_CFG_VIRT_BASE
,
182 .pfn
= __phys_to_pfn(VERSATILE_PCI_CFG_BASE
),
183 .length
= VERSATILE_PCI_CFG_BASE_SIZE
,
189 void __init
versatile_map_io(void)
191 iotable_init(versatile_io_desc
, ARRAY_SIZE(versatile_io_desc
));
195 #define VERSATILE_FLASHCTRL (__io_address(VERSATILE_SYS_BASE) + VERSATILE_SYS_FLASH_OFFSET)
197 static void versatile_flash_set_vpp(struct platform_device
*pdev
, int on
)
201 val
= __raw_readl(VERSATILE_FLASHCTRL
);
203 val
|= VERSATILE_FLASHPROG_FLVPPEN
;
205 val
&= ~VERSATILE_FLASHPROG_FLVPPEN
;
206 __raw_writel(val
, VERSATILE_FLASHCTRL
);
209 static struct physmap_flash_data versatile_flash_data
= {
211 .set_vpp
= versatile_flash_set_vpp
,
214 static struct resource versatile_flash_resource
= {
215 .start
= VERSATILE_FLASH_BASE
,
216 .end
= VERSATILE_FLASH_BASE
+ VERSATILE_FLASH_SIZE
- 1,
217 .flags
= IORESOURCE_MEM
,
220 static struct platform_device versatile_flash_device
= {
221 .name
= "physmap-flash",
224 .platform_data
= &versatile_flash_data
,
227 .resource
= &versatile_flash_resource
,
230 static struct resource smc91x_resources
[] = {
232 .start
= VERSATILE_ETH_BASE
,
233 .end
= VERSATILE_ETH_BASE
+ SZ_64K
- 1,
234 .flags
= IORESOURCE_MEM
,
239 .flags
= IORESOURCE_IRQ
,
243 static struct platform_device smc91x_device
= {
246 .num_resources
= ARRAY_SIZE(smc91x_resources
),
247 .resource
= smc91x_resources
,
250 static struct resource versatile_i2c_resource
= {
251 .start
= VERSATILE_I2C_BASE
,
252 .end
= VERSATILE_I2C_BASE
+ SZ_4K
- 1,
253 .flags
= IORESOURCE_MEM
,
256 static struct platform_device versatile_i2c_device
= {
257 .name
= "versatile-i2c",
260 .resource
= &versatile_i2c_resource
,
263 static struct i2c_board_info versatile_i2c_board_info
[] = {
265 I2C_BOARD_INFO("ds1338", 0xd0 >> 1),
269 static int __init
versatile_i2c_init(void)
271 return i2c_register_board_info(0, versatile_i2c_board_info
,
272 ARRAY_SIZE(versatile_i2c_board_info
));
274 arch_initcall(versatile_i2c_init
);
276 #define VERSATILE_SYSMCI (__io_address(VERSATILE_SYS_BASE) + VERSATILE_SYS_MCI_OFFSET)
278 unsigned int mmc_status(struct device
*dev
)
280 struct amba_device
*adev
= container_of(dev
, struct amba_device
, dev
);
283 if (adev
->res
.start
== VERSATILE_MMCI0_BASE
)
288 return readl(VERSATILE_SYSMCI
) & mask
;
291 static struct mmci_platform_data mmc0_plat_data
= {
292 .ocr_mask
= MMC_VDD_32_33
|MMC_VDD_33_34
,
293 .status
= mmc_status
,
298 static struct resource char_lcd_resources
[] = {
300 .start
= VERSATILE_CHAR_LCD_BASE
,
301 .end
= (VERSATILE_CHAR_LCD_BASE
+ SZ_4K
- 1),
302 .flags
= IORESOURCE_MEM
,
306 static struct platform_device char_lcd_device
= {
307 .name
= "arm-charlcd",
309 .num_resources
= ARRAY_SIZE(char_lcd_resources
),
310 .resource
= char_lcd_resources
,
316 static const struct icst_params versatile_oscvco_params
= {
318 .vco_max
= ICST307_VCO_MAX
,
319 .vco_min
= ICST307_VCO_MIN
,
324 .s2div
= icst307_s2div
,
325 .idx2s
= icst307_idx2s
,
328 static void versatile_oscvco_set(struct clk
*clk
, struct icst_vco vco
)
330 void __iomem
*sys_lock
= __io_address(VERSATILE_SYS_BASE
) + VERSATILE_SYS_LOCK_OFFSET
;
333 val
= readl(clk
->vcoreg
) & ~0x7ffff;
334 val
|= vco
.v
| (vco
.r
<< 9) | (vco
.s
<< 16);
336 writel(0xa05f, sys_lock
);
337 writel(val
, clk
->vcoreg
);
341 static const struct clk_ops osc4_clk_ops
= {
342 .round
= icst_clk_round
,
344 .setvco
= versatile_oscvco_set
,
347 static struct clk osc4_clk
= {
348 .ops
= &osc4_clk_ops
,
349 .params
= &versatile_oscvco_params
,
353 * These are fixed clocks.
355 static struct clk ref24_clk
= {
359 static struct clk sp804_clk
= {
363 static struct clk dummy_apb_pclk
;
365 static struct clk_lookup lookups
[] = {
366 { /* AMBA bus clock */
367 .con_id
= "apb_pclk",
368 .clk
= &dummy_apb_pclk
,
399 }, { /* SP804 timers */
408 #define SYS_CLCD_MODE_MASK (3 << 0)
409 #define SYS_CLCD_MODE_888 (0 << 0)
410 #define SYS_CLCD_MODE_5551 (1 << 0)
411 #define SYS_CLCD_MODE_565_RLSB (2 << 0)
412 #define SYS_CLCD_MODE_565_BLSB (3 << 0)
413 #define SYS_CLCD_NLCDIOON (1 << 2)
414 #define SYS_CLCD_VDDPOSSWITCH (1 << 3)
415 #define SYS_CLCD_PWR3V5SWITCH (1 << 4)
416 #define SYS_CLCD_ID_MASK (0x1f << 8)
417 #define SYS_CLCD_ID_SANYO_3_8 (0x00 << 8)
418 #define SYS_CLCD_ID_UNKNOWN_8_4 (0x01 << 8)
419 #define SYS_CLCD_ID_EPSON_2_2 (0x02 << 8)
420 #define SYS_CLCD_ID_SANYO_2_5 (0x07 << 8)
421 #define SYS_CLCD_ID_VGA (0x1f << 8)
423 static bool is_sanyo_2_5_lcd
;
426 * Disable all display connectors on the interface module.
428 static void versatile_clcd_disable(struct clcd_fb
*fb
)
430 void __iomem
*sys_clcd
= __io_address(VERSATILE_SYS_BASE
) + VERSATILE_SYS_CLCD_OFFSET
;
433 val
= readl(sys_clcd
);
434 val
&= ~SYS_CLCD_NLCDIOON
| SYS_CLCD_PWR3V5SWITCH
;
435 writel(val
, sys_clcd
);
437 #ifdef CONFIG_MACH_VERSATILE_AB
439 * If the LCD is Sanyo 2x5 in on the IB2 board, turn the back-light off
441 if (machine_is_versatile_ab() && is_sanyo_2_5_lcd
) {
442 void __iomem
*versatile_ib2_ctrl
= __io_address(VERSATILE_IB2_CTRL
);
445 ctrl
= readl(versatile_ib2_ctrl
);
447 writel(ctrl
, versatile_ib2_ctrl
);
453 * Enable the relevant connector on the interface module.
455 static void versatile_clcd_enable(struct clcd_fb
*fb
)
457 struct fb_var_screeninfo
*var
= &fb
->fb
.var
;
458 void __iomem
*sys_clcd
= __io_address(VERSATILE_SYS_BASE
) + VERSATILE_SYS_CLCD_OFFSET
;
461 val
= readl(sys_clcd
);
462 val
&= ~SYS_CLCD_MODE_MASK
;
464 switch (var
->green
.length
) {
466 val
|= SYS_CLCD_MODE_5551
;
469 if (var
->red
.offset
== 0)
470 val
|= SYS_CLCD_MODE_565_RLSB
;
472 val
|= SYS_CLCD_MODE_565_BLSB
;
475 val
|= SYS_CLCD_MODE_888
;
482 writel(val
, sys_clcd
);
485 * And now enable the PSUs
487 val
|= SYS_CLCD_NLCDIOON
| SYS_CLCD_PWR3V5SWITCH
;
488 writel(val
, sys_clcd
);
490 #ifdef CONFIG_MACH_VERSATILE_AB
492 * If the LCD is Sanyo 2x5 in on the IB2 board, turn the back-light on
494 if (machine_is_versatile_ab() && is_sanyo_2_5_lcd
) {
495 void __iomem
*versatile_ib2_ctrl
= __io_address(VERSATILE_IB2_CTRL
);
498 ctrl
= readl(versatile_ib2_ctrl
);
500 writel(ctrl
, versatile_ib2_ctrl
);
506 * Detect which LCD panel is connected, and return the appropriate
507 * clcd_panel structure. Note: we do not have any information on
508 * the required timings for the 8.4in panel, so we presently assume
511 static int versatile_clcd_setup(struct clcd_fb
*fb
)
513 void __iomem
*sys_clcd
= __io_address(VERSATILE_SYS_BASE
) + VERSATILE_SYS_CLCD_OFFSET
;
514 const char *panel_name
;
517 is_sanyo_2_5_lcd
= false;
519 val
= readl(sys_clcd
) & SYS_CLCD_ID_MASK
;
520 if (val
== SYS_CLCD_ID_SANYO_3_8
)
521 panel_name
= "Sanyo TM38QV67A02A";
522 else if (val
== SYS_CLCD_ID_SANYO_2_5
) {
523 panel_name
= "Sanyo QVGA Portrait";
524 is_sanyo_2_5_lcd
= true;
525 } else if (val
== SYS_CLCD_ID_EPSON_2_2
)
526 panel_name
= "Epson L2F50113T00";
527 else if (val
== SYS_CLCD_ID_VGA
)
530 printk(KERN_ERR
"CLCD: unknown LCD panel ID 0x%08x, using VGA\n",
535 fb
->panel
= versatile_clcd_get_panel(panel_name
);
539 return versatile_clcd_setup_dma(fb
, SZ_1M
);
542 static void versatile_clcd_decode(struct clcd_fb
*fb
, struct clcd_regs
*regs
)
544 clcdfb_decode(fb
, regs
);
546 /* Always clear BGR for RGB565: we do the routing externally */
547 if (fb
->fb
.var
.green
.length
== 6)
548 regs
->cntl
&= ~CNTL_BGR
;
551 static struct clcd_board clcd_plat_data
= {
553 .caps
= CLCD_CAP_5551
| CLCD_CAP_565
| CLCD_CAP_888
,
554 .check
= clcdfb_check
,
555 .decode
= versatile_clcd_decode
,
556 .disable
= versatile_clcd_disable
,
557 .enable
= versatile_clcd_enable
,
558 .setup
= versatile_clcd_setup
,
559 .mmap
= versatile_clcd_mmap_dma
,
560 .remove
= versatile_clcd_remove_dma
,
563 static struct pl061_platform_data gpio0_plat_data
= {
565 .irq_base
= IRQ_GPIO0_START
,
568 static struct pl061_platform_data gpio1_plat_data
= {
570 .irq_base
= IRQ_GPIO1_START
,
573 static struct pl022_ssp_controller ssp0_plat_data
= {
579 #define AACI_IRQ { IRQ_AACI }
580 #define MMCI0_IRQ { IRQ_MMCI0A,IRQ_SIC_MMCI0B }
581 #define KMI0_IRQ { IRQ_SIC_KMI0 }
582 #define KMI1_IRQ { IRQ_SIC_KMI1 }
585 * These devices are connected directly to the multi-layer AHB switch
589 #define CLCD_IRQ { IRQ_CLCDINT }
590 #define DMAC_IRQ { IRQ_DMAINT }
593 * These devices are connected via the core APB bridge
596 #define WATCHDOG_IRQ { IRQ_WDOGINT }
597 #define GPIO0_IRQ { IRQ_GPIOINT0 }
598 #define GPIO1_IRQ { IRQ_GPIOINT1 }
599 #define RTC_IRQ { IRQ_RTCINT }
602 * These devices are connected via the DMA APB bridge
604 #define SCI_IRQ { IRQ_SCIINT }
605 #define UART0_IRQ { IRQ_UARTINT0 }
606 #define UART1_IRQ { IRQ_UARTINT1 }
607 #define UART2_IRQ { IRQ_UARTINT2 }
608 #define SSP_IRQ { IRQ_SSPINT }
610 /* FPGA Primecells */
611 APB_DEVICE(aaci
, "fpga:04", AACI
, NULL
);
612 APB_DEVICE(mmc0
, "fpga:05", MMCI0
, &mmc0_plat_data
);
613 APB_DEVICE(kmi0
, "fpga:06", KMI0
, NULL
);
614 APB_DEVICE(kmi1
, "fpga:07", KMI1
, NULL
);
616 /* DevChip Primecells */
617 AHB_DEVICE(smc
, "dev:00", SMC
, NULL
);
618 AHB_DEVICE(mpmc
, "dev:10", MPMC
, NULL
);
619 AHB_DEVICE(clcd
, "dev:20", CLCD
, &clcd_plat_data
);
620 AHB_DEVICE(dmac
, "dev:30", DMAC
, NULL
);
621 APB_DEVICE(sctl
, "dev:e0", SCTL
, NULL
);
622 APB_DEVICE(wdog
, "dev:e1", WATCHDOG
, NULL
);
623 APB_DEVICE(gpio0
, "dev:e4", GPIO0
, &gpio0_plat_data
);
624 APB_DEVICE(gpio1
, "dev:e5", GPIO1
, &gpio1_plat_data
);
625 APB_DEVICE(rtc
, "dev:e8", RTC
, NULL
);
626 APB_DEVICE(sci0
, "dev:f0", SCI
, NULL
);
627 APB_DEVICE(uart0
, "dev:f1", UART0
, NULL
);
628 APB_DEVICE(uart1
, "dev:f2", UART1
, NULL
);
629 APB_DEVICE(uart2
, "dev:f3", UART2
, NULL
);
630 APB_DEVICE(ssp0
, "dev:f4", SSP
, &ssp0_plat_data
);
632 static struct amba_device
*amba_devs
[] __initdata
= {
655 * Lookup table for attaching a specific name and platform_data pointer to
656 * devices as they get created by of_platform_populate(). Ideally this table
657 * would not exist, but the current clock implementation depends on some devices
658 * having a specific name.
660 struct of_dev_auxdata versatile_auxdata_lookup
[] __initdata
= {
661 OF_DEV_AUXDATA("arm,primecell", VERSATILE_MMCI0_BASE
, "fpga:05", &mmc0_plat_data
),
662 OF_DEV_AUXDATA("arm,primecell", VERSATILE_KMI0_BASE
, "fpga:06", NULL
),
663 OF_DEV_AUXDATA("arm,primecell", VERSATILE_KMI1_BASE
, "fpga:07", NULL
),
664 OF_DEV_AUXDATA("arm,primecell", VERSATILE_UART3_BASE
, "fpga:09", NULL
),
665 /* FIXME: this is buggy, the platform data is needed for this MMC instance too */
666 OF_DEV_AUXDATA("arm,primecell", VERSATILE_MMCI1_BASE
, "fpga:0b", NULL
),
668 OF_DEV_AUXDATA("arm,primecell", VERSATILE_CLCD_BASE
, "dev:20", &clcd_plat_data
),
669 OF_DEV_AUXDATA("arm,primecell", VERSATILE_UART0_BASE
, "dev:f1", NULL
),
670 OF_DEV_AUXDATA("arm,primecell", VERSATILE_UART1_BASE
, "dev:f2", NULL
),
671 OF_DEV_AUXDATA("arm,primecell", VERSATILE_UART2_BASE
, "dev:f3", NULL
),
672 OF_DEV_AUXDATA("arm,primecell", VERSATILE_SSP_BASE
, "dev:f4", &ssp0_plat_data
),
676 * These entries are unnecessary because no clocks referencing
677 * them. I've left them in for now as place holders in case
678 * any of them need to be added back, but they should be
679 * removed before actually committing this patch. --gcl
681 OF_DEV_AUXDATA("arm,primecell", VERSATILE_AACI_BASE
, "fpga:04", NULL
),
682 OF_DEV_AUXDATA("arm,primecell", VERSATILE_SCI1_BASE
, "fpga:0a", NULL
),
683 OF_DEV_AUXDATA("arm,primecell", VERSATILE_SMC_BASE
, "dev:00", NULL
),
684 OF_DEV_AUXDATA("arm,primecell", VERSATILE_MPMC_BASE
, "dev:10", NULL
),
685 OF_DEV_AUXDATA("arm,primecell", VERSATILE_DMAC_BASE
, "dev:30", NULL
),
687 OF_DEV_AUXDATA("arm,primecell", VERSATILE_SCTL_BASE
, "dev:e0", NULL
),
688 OF_DEV_AUXDATA("arm,primecell", VERSATILE_WATCHDOG_BASE
, "dev:e1", NULL
),
689 OF_DEV_AUXDATA("arm,primecell", VERSATILE_GPIO0_BASE
, "dev:e4", NULL
),
690 OF_DEV_AUXDATA("arm,primecell", VERSATILE_GPIO1_BASE
, "dev:e5", NULL
),
691 OF_DEV_AUXDATA("arm,primecell", VERSATILE_GPIO2_BASE
, "dev:e6", NULL
),
692 OF_DEV_AUXDATA("arm,primecell", VERSATILE_GPIO3_BASE
, "dev:e7", NULL
),
693 OF_DEV_AUXDATA("arm,primecell", VERSATILE_RTC_BASE
, "dev:e8", NULL
),
694 OF_DEV_AUXDATA("arm,primecell", VERSATILE_SCI_BASE
, "dev:f0", NULL
),
701 #define VA_LEDS_BASE (__io_address(VERSATILE_SYS_BASE) + VERSATILE_SYS_LED_OFFSET)
703 static void versatile_leds_event(led_event_t ledevt
)
708 local_irq_save(flags
);
709 val
= readl(VA_LEDS_BASE
);
713 val
= val
& ~VERSATILE_SYS_LED0
;
717 val
= val
| VERSATILE_SYS_LED0
;
721 val
= val
^ VERSATILE_SYS_LED1
;
732 writel(val
, VA_LEDS_BASE
);
733 local_irq_restore(flags
);
735 #endif /* CONFIG_LEDS */
737 void versatile_restart(enum reboot_mode mode
, const char *cmd
)
739 void __iomem
*sys
= __io_address(VERSATILE_SYS_BASE
);
742 val
= __raw_readl(sys
+ VERSATILE_SYS_RESETCTL_OFFSET
);
745 __raw_writel(0xa05f, sys
+ VERSATILE_SYS_LOCK_OFFSET
);
746 __raw_writel(val
, sys
+ VERSATILE_SYS_RESETCTL_OFFSET
);
747 __raw_writel(0, sys
+ VERSATILE_SYS_LOCK_OFFSET
);
750 /* Early initializations */
751 void __init
versatile_init_early(void)
754 void __iomem
*sys
= __io_address(VERSATILE_SYS_BASE
);
756 osc4_clk
.vcoreg
= sys
+ VERSATILE_SYS_OSCCLCD_OFFSET
;
757 clkdev_add_table(lookups
, ARRAY_SIZE(lookups
));
759 versatile_sched_clock_init(sys
+ VERSATILE_SYS_24MHz_OFFSET
, 24000000);
762 * set clock frequency:
763 * VERSATILE_REFCLK is 32KHz
764 * VERSATILE_TIMCLK is 1MHz
766 val
= readl(__io_address(VERSATILE_SCTL_BASE
));
767 writel((VERSATILE_TIMCLK
<< VERSATILE_TIMER1_EnSel
) |
768 (VERSATILE_TIMCLK
<< VERSATILE_TIMER2_EnSel
) |
769 (VERSATILE_TIMCLK
<< VERSATILE_TIMER3_EnSel
) |
770 (VERSATILE_TIMCLK
<< VERSATILE_TIMER4_EnSel
) | val
,
771 __io_address(VERSATILE_SCTL_BASE
));
774 void __init
versatile_init(void)
778 platform_device_register(&versatile_flash_device
);
779 platform_device_register(&versatile_i2c_device
);
780 platform_device_register(&smc91x_device
);
781 platform_device_register(&char_lcd_device
);
783 for (i
= 0; i
< ARRAY_SIZE(amba_devs
); i
++) {
784 struct amba_device
*d
= amba_devs
[i
];
785 amba_device_register(d
, &iomem_resource
);
790 * Where is the timer (VA)?
792 #define TIMER0_VA_BASE __io_address(VERSATILE_TIMER0_1_BASE)
793 #define TIMER1_VA_BASE (__io_address(VERSATILE_TIMER0_1_BASE) + 0x20)
794 #define TIMER2_VA_BASE __io_address(VERSATILE_TIMER2_3_BASE)
795 #define TIMER3_VA_BASE (__io_address(VERSATILE_TIMER2_3_BASE) + 0x20)
798 * Set up timer interrupt, and return the current time in seconds.
800 void __init
versatile_timer_init(void)
804 * Initialise to a known state (all timers off)
806 writel(0, TIMER0_VA_BASE
+ TIMER_CTRL
);
807 writel(0, TIMER1_VA_BASE
+ TIMER_CTRL
);
808 writel(0, TIMER2_VA_BASE
+ TIMER_CTRL
);
809 writel(0, TIMER3_VA_BASE
+ TIMER_CTRL
);
811 sp804_clocksource_init(TIMER3_VA_BASE
, "timer3");
812 sp804_clockevents_init(TIMER0_VA_BASE
, IRQ_TIMERINT0_1
, "timer0");