2 * linux/arch/arm/mach-integrator/integrator_cp.c
4 * Copyright (C) 2003 Deep Blue Solutions Ltd
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License.
10 #include <linux/types.h>
11 #include <linux/kernel.h>
12 #include <linux/init.h>
13 #include <linux/list.h>
14 #include <linux/platform_device.h>
15 #include <linux/dma-mapping.h>
16 #include <linux/slab.h>
17 #include <linux/string.h>
18 #include <linux/sysdev.h>
19 #include <linux/amba/bus.h>
20 #include <linux/amba/kmi.h>
21 #include <linux/amba/clcd.h>
22 #include <linux/amba/mmci.h>
25 #include <asm/clkdev.h>
26 #include <mach/clkdev.h>
27 #include <mach/hardware.h>
28 #include <mach/platform.h>
30 #include <asm/setup.h>
31 #include <asm/mach-types.h>
32 #include <asm/hardware/icst.h>
37 #include <asm/mach/arch.h>
38 #include <asm/mach/flash.h>
39 #include <asm/mach/irq.h>
40 #include <asm/mach/map.h>
41 #include <asm/mach/time.h>
45 #define INTCP_PA_FLASH_BASE 0x24000000
46 #define INTCP_FLASH_SIZE SZ_32M
48 #define INTCP_PA_CLCD_BASE 0xc0000000
50 #define INTCP_VA_CIC_BASE IO_ADDRESS(INTEGRATOR_HDR_BASE + 0x40)
51 #define INTCP_VA_PIC_BASE IO_ADDRESS(INTEGRATOR_IC_BASE)
52 #define INTCP_VA_SIC_BASE IO_ADDRESS(INTEGRATOR_CP_SIC_BASE)
54 #define INTCP_ETH_SIZE 0x10
56 #define INTCP_VA_CTRL_BASE IO_ADDRESS(INTEGRATOR_CP_CTL_BASE)
57 #define INTCP_FLASHPROG 0x04
58 #define CINTEGRATOR_FLASHPROG_FLVPPEN (1 << 0)
59 #define CINTEGRATOR_FLASHPROG_FLWREN (1 << 1)
63 * f1000000 10000000 Core module registers
64 * f1100000 11000000 System controller registers
65 * f1200000 12000000 EBI registers
66 * f1300000 13000000 Counter/Timer
67 * f1400000 14000000 Interrupt controller
68 * f1600000 16000000 UART 0
69 * f1700000 17000000 UART 1
70 * f1a00000 1a000000 Debug LEDs
71 * fc900000 c9000000 GPIO
72 * fca00000 ca000000 SIC
73 * fcb00000 cb000000 CP system control
76 static struct map_desc intcp_io_desc
[] __initdata
= {
78 .virtual = IO_ADDRESS(INTEGRATOR_HDR_BASE
),
79 .pfn
= __phys_to_pfn(INTEGRATOR_HDR_BASE
),
83 .virtual = IO_ADDRESS(INTEGRATOR_SC_BASE
),
84 .pfn
= __phys_to_pfn(INTEGRATOR_SC_BASE
),
88 .virtual = IO_ADDRESS(INTEGRATOR_EBI_BASE
),
89 .pfn
= __phys_to_pfn(INTEGRATOR_EBI_BASE
),
93 .virtual = IO_ADDRESS(INTEGRATOR_CT_BASE
),
94 .pfn
= __phys_to_pfn(INTEGRATOR_CT_BASE
),
98 .virtual = IO_ADDRESS(INTEGRATOR_IC_BASE
),
99 .pfn
= __phys_to_pfn(INTEGRATOR_IC_BASE
),
103 .virtual = IO_ADDRESS(INTEGRATOR_UART0_BASE
),
104 .pfn
= __phys_to_pfn(INTEGRATOR_UART0_BASE
),
108 .virtual = IO_ADDRESS(INTEGRATOR_UART1_BASE
),
109 .pfn
= __phys_to_pfn(INTEGRATOR_UART1_BASE
),
113 .virtual = IO_ADDRESS(INTEGRATOR_DBG_BASE
),
114 .pfn
= __phys_to_pfn(INTEGRATOR_DBG_BASE
),
118 .virtual = IO_ADDRESS(INTEGRATOR_CP_GPIO_BASE
),
119 .pfn
= __phys_to_pfn(INTEGRATOR_CP_GPIO_BASE
),
123 .virtual = IO_ADDRESS(INTEGRATOR_CP_SIC_BASE
),
124 .pfn
= __phys_to_pfn(INTEGRATOR_CP_SIC_BASE
),
128 .virtual = IO_ADDRESS(INTEGRATOR_CP_CTL_BASE
),
129 .pfn
= __phys_to_pfn(INTEGRATOR_CP_CTL_BASE
),
135 static void __init
intcp_map_io(void)
137 iotable_init(intcp_io_desc
, ARRAY_SIZE(intcp_io_desc
));
140 #define cic_writel __raw_writel
141 #define cic_readl __raw_readl
142 #define pic_writel __raw_writel
143 #define pic_readl __raw_readl
144 #define sic_writel __raw_writel
145 #define sic_readl __raw_readl
147 static void cic_mask_irq(unsigned int irq
)
149 irq
-= IRQ_CIC_START
;
150 cic_writel(1 << irq
, INTCP_VA_CIC_BASE
+ IRQ_ENABLE_CLEAR
);
153 static void cic_unmask_irq(unsigned int irq
)
155 irq
-= IRQ_CIC_START
;
156 cic_writel(1 << irq
, INTCP_VA_CIC_BASE
+ IRQ_ENABLE_SET
);
159 static struct irq_chip cic_chip
= {
162 .mask
= cic_mask_irq
,
163 .unmask
= cic_unmask_irq
,
166 static void pic_mask_irq(unsigned int irq
)
168 irq
-= IRQ_PIC_START
;
169 pic_writel(1 << irq
, INTCP_VA_PIC_BASE
+ IRQ_ENABLE_CLEAR
);
172 static void pic_unmask_irq(unsigned int irq
)
174 irq
-= IRQ_PIC_START
;
175 pic_writel(1 << irq
, INTCP_VA_PIC_BASE
+ IRQ_ENABLE_SET
);
178 static struct irq_chip pic_chip
= {
181 .mask
= pic_mask_irq
,
182 .unmask
= pic_unmask_irq
,
185 static void sic_mask_irq(unsigned int irq
)
187 irq
-= IRQ_SIC_START
;
188 sic_writel(1 << irq
, INTCP_VA_SIC_BASE
+ IRQ_ENABLE_CLEAR
);
191 static void sic_unmask_irq(unsigned int irq
)
193 irq
-= IRQ_SIC_START
;
194 sic_writel(1 << irq
, INTCP_VA_SIC_BASE
+ IRQ_ENABLE_SET
);
197 static struct irq_chip sic_chip
= {
200 .mask
= sic_mask_irq
,
201 .unmask
= sic_unmask_irq
,
205 sic_handle_irq(unsigned int irq
, struct irq_desc
*desc
)
207 unsigned long status
= sic_readl(INTCP_VA_SIC_BASE
+ IRQ_STATUS
);
210 do_bad_IRQ(irq
, desc
);
215 irq
= ffs(status
) - 1;
216 status
&= ~(1 << irq
);
218 irq
+= IRQ_SIC_START
;
220 generic_handle_irq(irq
);
224 static void __init
intcp_init_irq(void)
229 * Disable all interrupt sources
231 pic_writel(0xffffffff, INTCP_VA_PIC_BASE
+ IRQ_ENABLE_CLEAR
);
232 pic_writel(0xffffffff, INTCP_VA_PIC_BASE
+ FIQ_ENABLE_CLEAR
);
234 for (i
= IRQ_PIC_START
; i
<= IRQ_PIC_END
; i
++) {
239 set_irq_chip(i
, &pic_chip
);
240 set_irq_handler(i
, handle_level_irq
);
241 set_irq_flags(i
, IRQF_VALID
| IRQF_PROBE
);
244 cic_writel(0xffffffff, INTCP_VA_CIC_BASE
+ IRQ_ENABLE_CLEAR
);
245 cic_writel(0xffffffff, INTCP_VA_CIC_BASE
+ FIQ_ENABLE_CLEAR
);
247 for (i
= IRQ_CIC_START
; i
<= IRQ_CIC_END
; i
++) {
248 set_irq_chip(i
, &cic_chip
);
249 set_irq_handler(i
, handle_level_irq
);
250 set_irq_flags(i
, IRQF_VALID
);
253 sic_writel(0x00000fff, INTCP_VA_SIC_BASE
+ IRQ_ENABLE_CLEAR
);
254 sic_writel(0x00000fff, INTCP_VA_SIC_BASE
+ FIQ_ENABLE_CLEAR
);
256 for (i
= IRQ_SIC_START
; i
<= IRQ_SIC_END
; i
++) {
257 set_irq_chip(i
, &sic_chip
);
258 set_irq_handler(i
, handle_level_irq
);
259 set_irq_flags(i
, IRQF_VALID
| IRQF_PROBE
);
262 set_irq_chained_handler(IRQ_CP_CPPLDINT
, sic_handle_irq
);
268 #define CM_LOCK IO_ADDRESS(INTEGRATOR_HDR_LOCK)
269 #define CM_AUXOSC IO_ADDRESS(INTEGRATOR_HDR_BASE + 0x1c)
271 static const struct icst_params cp_auxvco_params
= {
273 .vco_max
= ICST525_VCO_MAX_5V
,
274 .vco_min
= ICST525_VCO_MIN
,
279 .s2div
= icst525_s2div
,
280 .idx2s
= icst525_idx2s
,
283 static void cp_auxvco_set(struct clk
*clk
, struct icst_vco vco
)
287 val
= readl(CM_AUXOSC
) & ~0x7ffff;
288 val
|= vco
.v
| (vco
.r
<< 9) | (vco
.s
<< 16);
290 writel(0xa05f, CM_LOCK
);
291 writel(val
, CM_AUXOSC
);
295 static struct clk cp_auxclk
= {
296 .params
= &cp_auxvco_params
,
297 .setvco
= cp_auxvco_set
,
300 static struct clk_lookup cp_lookups
[] = {
310 static int intcp_flash_init(void)
314 val
= readl(INTCP_VA_CTRL_BASE
+ INTCP_FLASHPROG
);
315 val
|= CINTEGRATOR_FLASHPROG_FLWREN
;
316 writel(val
, INTCP_VA_CTRL_BASE
+ INTCP_FLASHPROG
);
321 static void intcp_flash_exit(void)
325 val
= readl(INTCP_VA_CTRL_BASE
+ INTCP_FLASHPROG
);
326 val
&= ~(CINTEGRATOR_FLASHPROG_FLVPPEN
|CINTEGRATOR_FLASHPROG_FLWREN
);
327 writel(val
, INTCP_VA_CTRL_BASE
+ INTCP_FLASHPROG
);
330 static void intcp_flash_set_vpp(int on
)
334 val
= readl(INTCP_VA_CTRL_BASE
+ INTCP_FLASHPROG
);
336 val
|= CINTEGRATOR_FLASHPROG_FLVPPEN
;
338 val
&= ~CINTEGRATOR_FLASHPROG_FLVPPEN
;
339 writel(val
, INTCP_VA_CTRL_BASE
+ INTCP_FLASHPROG
);
342 static struct flash_platform_data intcp_flash_data
= {
343 .map_name
= "cfi_probe",
345 .init
= intcp_flash_init
,
346 .exit
= intcp_flash_exit
,
347 .set_vpp
= intcp_flash_set_vpp
,
350 static struct resource intcp_flash_resource
= {
351 .start
= INTCP_PA_FLASH_BASE
,
352 .end
= INTCP_PA_FLASH_BASE
+ INTCP_FLASH_SIZE
- 1,
353 .flags
= IORESOURCE_MEM
,
356 static struct platform_device intcp_flash_device
= {
360 .platform_data
= &intcp_flash_data
,
363 .resource
= &intcp_flash_resource
,
366 static struct resource smc91x_resources
[] = {
368 .start
= INTEGRATOR_CP_ETH_BASE
,
369 .end
= INTEGRATOR_CP_ETH_BASE
+ INTCP_ETH_SIZE
- 1,
370 .flags
= IORESOURCE_MEM
,
373 .start
= IRQ_CP_ETHINT
,
374 .end
= IRQ_CP_ETHINT
,
375 .flags
= IORESOURCE_IRQ
,
379 static struct platform_device smc91x_device
= {
382 .num_resources
= ARRAY_SIZE(smc91x_resources
),
383 .resource
= smc91x_resources
,
386 static struct platform_device
*intcp_devs
[] __initdata
= {
392 * It seems that the card insertion interrupt remains active after
393 * we've acknowledged it. We therefore ignore the interrupt, and
394 * rely on reading it from the SIC. This also means that we must
395 * clear the latched interrupt.
397 static unsigned int mmc_status(struct device
*dev
)
399 unsigned int status
= readl(IO_ADDRESS(0xca000000 + 4));
400 writel(8, IO_ADDRESS(INTEGRATOR_CP_CTL_BASE
+ 8));
405 static struct mmci_platform_data mmc_data
= {
406 .ocr_mask
= MMC_VDD_32_33
|MMC_VDD_33_34
,
407 .status
= mmc_status
,
412 static struct amba_device mmc_device
= {
414 .init_name
= "mb:1c",
415 .platform_data
= &mmc_data
,
418 .start
= INTEGRATOR_CP_MMC_BASE
,
419 .end
= INTEGRATOR_CP_MMC_BASE
+ SZ_4K
- 1,
420 .flags
= IORESOURCE_MEM
,
422 .irq
= { IRQ_CP_MMCIINT0
, IRQ_CP_MMCIINT1
},
426 static struct amba_device aaci_device
= {
428 .init_name
= "mb:1d",
431 .start
= INTEGRATOR_CP_AACI_BASE
,
432 .end
= INTEGRATOR_CP_AACI_BASE
+ SZ_4K
- 1,
433 .flags
= IORESOURCE_MEM
,
435 .irq
= { IRQ_CP_AACIINT
, NO_IRQ
},
443 static struct clcd_panel vga
= {
457 .vmode
= FB_VMODE_NONINTERLACED
,
461 .tim2
= TIM2_BCD
| TIM2_IPC
,
462 .cntl
= CNTL_LCDTFT
| CNTL_LCDVCOMP(1),
468 * Ensure VGA is selected.
470 static void cp_clcd_enable(struct clcd_fb
*fb
)
474 if (fb
->fb
.var
.bits_per_pixel
<= 8)
475 val
= CM_CTRL_LCDMUXSEL_VGA_8421BPP
;
476 else if (fb
->fb
.var
.bits_per_pixel
<= 16)
477 val
= CM_CTRL_LCDMUXSEL_VGA_16BPP
478 | CM_CTRL_LCDEN0
| CM_CTRL_LCDEN1
479 | CM_CTRL_STATIC1
| CM_CTRL_STATIC2
;
481 val
= 0; /* no idea for this, don't trust the docs */
483 cm_control(CM_CTRL_LCDMUXSEL_MASK
|
489 CM_CTRL_n24BITEN
, val
);
492 static unsigned long framesize
= SZ_1M
;
494 static int cp_clcd_setup(struct clcd_fb
*fb
)
500 fb
->fb
.screen_base
= dma_alloc_writecombine(&fb
->dev
->dev
, framesize
,
502 if (!fb
->fb
.screen_base
) {
503 printk(KERN_ERR
"CLCD: unable to map framebuffer\n");
507 fb
->fb
.fix
.smem_start
= dma
;
508 fb
->fb
.fix
.smem_len
= framesize
;
513 static int cp_clcd_mmap(struct clcd_fb
*fb
, struct vm_area_struct
*vma
)
515 return dma_mmap_writecombine(&fb
->dev
->dev
, vma
,
517 fb
->fb
.fix
.smem_start
,
518 fb
->fb
.fix
.smem_len
);
521 static void cp_clcd_remove(struct clcd_fb
*fb
)
523 dma_free_writecombine(&fb
->dev
->dev
, fb
->fb
.fix
.smem_len
,
524 fb
->fb
.screen_base
, fb
->fb
.fix
.smem_start
);
527 static struct clcd_board clcd_data
= {
528 .name
= "Integrator/CP",
529 .check
= clcdfb_check
,
530 .decode
= clcdfb_decode
,
531 .enable
= cp_clcd_enable
,
532 .setup
= cp_clcd_setup
,
533 .mmap
= cp_clcd_mmap
,
534 .remove
= cp_clcd_remove
,
537 static struct amba_device clcd_device
= {
539 .init_name
= "mb:c0",
540 .coherent_dma_mask
= ~0,
541 .platform_data
= &clcd_data
,
544 .start
= INTCP_PA_CLCD_BASE
,
545 .end
= INTCP_PA_CLCD_BASE
+ SZ_4K
- 1,
546 .flags
= IORESOURCE_MEM
,
549 .irq
= { IRQ_CP_CLCDCINT
, NO_IRQ
},
553 static struct amba_device
*amba_devs
[] __initdata
= {
559 static void __init
intcp_init(void)
563 clkdev_add_table(cp_lookups
, ARRAY_SIZE(cp_lookups
));
564 platform_add_devices(intcp_devs
, ARRAY_SIZE(intcp_devs
));
566 for (i
= 0; i
< ARRAY_SIZE(amba_devs
); i
++) {
567 struct amba_device
*d
= amba_devs
[i
];
568 amba_device_register(d
, &iomem_resource
);
572 #define TIMER_CTRL_IE (1 << 5) /* Interrupt Enable */
574 static void __init
intcp_timer_init(void)
576 integrator_time_init(1000, TIMER_CTRL_IE
);
579 static struct sys_timer cp_timer
= {
580 .init
= intcp_timer_init
,
583 MACHINE_START(CINTEGRATOR
, "ARM-IntegratorCP")
584 /* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
585 .phys_io
= 0x16000000,
586 .io_pg_offst
= ((0xf1600000) >> 18) & 0xfffc,
587 .boot_params
= 0x00000100,
588 .map_io
= intcp_map_io
,
589 .init_irq
= intcp_init_irq
,
591 .init_machine
= intcp_init
,