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>
23 #include <asm/hardware.h>
26 #include <asm/setup.h>
27 #include <asm/mach-types.h>
28 #include <asm/hardware/icst525.h>
30 #include <asm/arch/cm.h>
31 #include <asm/arch/lm.h>
33 #include <asm/mach/arch.h>
34 #include <asm/mach/flash.h>
35 #include <asm/mach/irq.h>
36 #include <asm/mach/mmc.h>
37 #include <asm/mach/map.h>
38 #include <asm/mach/time.h>
43 #define INTCP_PA_MMC_BASE 0x1c000000
44 #define INTCP_PA_AACI_BASE 0x1d000000
46 #define INTCP_PA_FLASH_BASE 0x24000000
47 #define INTCP_FLASH_SIZE SZ_32M
49 #define INTCP_PA_CLCD_BASE 0xc0000000
51 #define INTCP_VA_CIC_BASE 0xf1000040
52 #define INTCP_VA_PIC_BASE 0xf1400000
53 #define INTCP_VA_SIC_BASE 0xfca00000
55 #define INTCP_PA_ETH_BASE 0xc8000000
56 #define INTCP_ETH_SIZE 0x10
58 #define INTCP_VA_CTRL_BASE 0xfcb00000
59 #define INTCP_FLASHPROG 0x04
60 #define CINTEGRATOR_FLASHPROG_FLVPPEN (1 << 0)
61 #define CINTEGRATOR_FLASHPROG_FLWREN (1 << 1)
65 * f1000000 10000000 Core module registers
66 * f1100000 11000000 System controller registers
67 * f1200000 12000000 EBI registers
68 * f1300000 13000000 Counter/Timer
69 * f1400000 14000000 Interrupt controller
70 * f1600000 16000000 UART 0
71 * f1700000 17000000 UART 1
72 * f1a00000 1a000000 Debug LEDs
73 * f1b00000 1b000000 GPIO
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_GPIO_BASE
),
119 .pfn
= __phys_to_pfn(INTEGRATOR_GPIO_BASE
),
123 .virtual = 0xfca00000,
124 .pfn
= __phys_to_pfn(0xca000000),
128 .virtual = 0xfcb00000,
129 .pfn
= __phys_to_pfn(0xcb000000),
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 irqchip cic_chip
= {
161 .mask
= cic_mask_irq
,
162 .unmask
= cic_unmask_irq
,
165 static void pic_mask_irq(unsigned int irq
)
167 irq
-= IRQ_PIC_START
;
168 pic_writel(1 << irq
, INTCP_VA_PIC_BASE
+ IRQ_ENABLE_CLEAR
);
171 static void pic_unmask_irq(unsigned int irq
)
173 irq
-= IRQ_PIC_START
;
174 pic_writel(1 << irq
, INTCP_VA_PIC_BASE
+ IRQ_ENABLE_SET
);
177 static struct irqchip pic_chip
= {
179 .mask
= pic_mask_irq
,
180 .unmask
= pic_unmask_irq
,
183 static void sic_mask_irq(unsigned int irq
)
185 irq
-= IRQ_SIC_START
;
186 sic_writel(1 << irq
, INTCP_VA_SIC_BASE
+ IRQ_ENABLE_CLEAR
);
189 static void sic_unmask_irq(unsigned int irq
)
191 irq
-= IRQ_SIC_START
;
192 sic_writel(1 << irq
, INTCP_VA_SIC_BASE
+ IRQ_ENABLE_SET
);
195 static struct irqchip sic_chip
= {
197 .mask
= sic_mask_irq
,
198 .unmask
= sic_unmask_irq
,
202 sic_handle_irq(unsigned int irq
, struct irqdesc
*desc
, struct pt_regs
*regs
)
204 unsigned long status
= sic_readl(INTCP_VA_SIC_BASE
+ IRQ_STATUS
);
207 do_bad_IRQ(irq
, desc
, regs
);
212 irq
= ffs(status
) - 1;
213 status
&= ~(1 << irq
);
215 irq
+= IRQ_SIC_START
;
217 desc
= irq_desc
+ irq
;
218 desc_handle_irq(irq
, desc
, regs
);
222 static void __init
intcp_init_irq(void)
227 * Disable all interrupt sources
229 pic_writel(0xffffffff, INTCP_VA_PIC_BASE
+ IRQ_ENABLE_CLEAR
);
230 pic_writel(0xffffffff, INTCP_VA_PIC_BASE
+ FIQ_ENABLE_CLEAR
);
232 for (i
= IRQ_PIC_START
; i
<= IRQ_PIC_END
; i
++) {
235 if (i
== IRQ_CP_CPPLDINT
)
239 set_irq_chip(i
, &pic_chip
);
240 set_irq_handler(i
, do_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
, do_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
, do_level_IRQ
);
259 set_irq_flags(i
, IRQF_VALID
| IRQF_PROBE
);
262 set_irq_handler(IRQ_CP_CPPLDINT
, sic_handle_irq
);
263 pic_unmask_irq(IRQ_CP_CPPLDINT
);
269 #define CM_LOCK (IO_ADDRESS(INTEGRATOR_HDR_BASE)+INTEGRATOR_HDR_LOCK_OFFSET)
270 #define CM_AUXOSC (IO_ADDRESS(INTEGRATOR_HDR_BASE)+0x1c)
272 static const struct icst525_params cp_auxvco_params
= {
281 static void cp_auxvco_set(struct clk
*clk
, struct icst525_vco vco
)
285 val
= readl(CM_AUXOSC
) & ~0x7ffff;
286 val
|= vco
.v
| (vco
.r
<< 9) | (vco
.s
<< 16);
288 writel(0xa05f, CM_LOCK
);
289 writel(val
, CM_AUXOSC
);
293 static struct clk cp_clcd_clk
= {
295 .params
= &cp_auxvco_params
,
296 .setvco
= cp_auxvco_set
,
299 static struct clk cp_mmci_clk
= {
307 static int intcp_flash_init(void)
311 val
= readl(INTCP_VA_CTRL_BASE
+ INTCP_FLASHPROG
);
312 val
|= CINTEGRATOR_FLASHPROG_FLWREN
;
313 writel(val
, INTCP_VA_CTRL_BASE
+ INTCP_FLASHPROG
);
318 static void intcp_flash_exit(void)
322 val
= readl(INTCP_VA_CTRL_BASE
+ INTCP_FLASHPROG
);
323 val
&= ~(CINTEGRATOR_FLASHPROG_FLVPPEN
|CINTEGRATOR_FLASHPROG_FLWREN
);
324 writel(val
, INTCP_VA_CTRL_BASE
+ INTCP_FLASHPROG
);
327 static void intcp_flash_set_vpp(int on
)
331 val
= readl(INTCP_VA_CTRL_BASE
+ INTCP_FLASHPROG
);
333 val
|= CINTEGRATOR_FLASHPROG_FLVPPEN
;
335 val
&= ~CINTEGRATOR_FLASHPROG_FLVPPEN
;
336 writel(val
, INTCP_VA_CTRL_BASE
+ INTCP_FLASHPROG
);
339 static struct flash_platform_data intcp_flash_data
= {
340 .map_name
= "cfi_probe",
342 .init
= intcp_flash_init
,
343 .exit
= intcp_flash_exit
,
344 .set_vpp
= intcp_flash_set_vpp
,
347 static struct resource intcp_flash_resource
= {
348 .start
= INTCP_PA_FLASH_BASE
,
349 .end
= INTCP_PA_FLASH_BASE
+ INTCP_FLASH_SIZE
- 1,
350 .flags
= IORESOURCE_MEM
,
353 static struct platform_device intcp_flash_device
= {
357 .platform_data
= &intcp_flash_data
,
360 .resource
= &intcp_flash_resource
,
363 static struct resource smc91x_resources
[] = {
365 .start
= INTCP_PA_ETH_BASE
,
366 .end
= INTCP_PA_ETH_BASE
+ INTCP_ETH_SIZE
- 1,
367 .flags
= IORESOURCE_MEM
,
370 .start
= IRQ_CP_ETHINT
,
371 .end
= IRQ_CP_ETHINT
,
372 .flags
= IORESOURCE_IRQ
,
376 static struct platform_device smc91x_device
= {
379 .num_resources
= ARRAY_SIZE(smc91x_resources
),
380 .resource
= smc91x_resources
,
383 static struct platform_device
*intcp_devs
[] __initdata
= {
389 * It seems that the card insertion interrupt remains active after
390 * we've acknowledged it. We therefore ignore the interrupt, and
391 * rely on reading it from the SIC. This also means that we must
392 * clear the latched interrupt.
394 static unsigned int mmc_status(struct device
*dev
)
396 unsigned int status
= readl(0xfca00004);
397 writel(8, 0xfcb00008);
402 static struct mmc_platform_data mmc_data
= {
403 .ocr_mask
= MMC_VDD_32_33
|MMC_VDD_33_34
,
404 .status
= mmc_status
,
407 static struct amba_device mmc_device
= {
410 .platform_data
= &mmc_data
,
413 .start
= INTCP_PA_MMC_BASE
,
414 .end
= INTCP_PA_MMC_BASE
+ SZ_4K
- 1,
415 .flags
= IORESOURCE_MEM
,
417 .irq
= { IRQ_CP_MMCIINT0
, IRQ_CP_MMCIINT1
},
421 static struct amba_device aaci_device
= {
426 .start
= INTCP_PA_AACI_BASE
,
427 .end
= INTCP_PA_AACI_BASE
+ SZ_4K
- 1,
428 .flags
= IORESOURCE_MEM
,
430 .irq
= { IRQ_CP_AACIINT
, NO_IRQ
},
438 static struct clcd_panel vga
= {
452 .vmode
= FB_VMODE_NONINTERLACED
,
456 .tim2
= TIM2_BCD
| TIM2_IPC
,
457 .cntl
= CNTL_LCDTFT
| CNTL_LCDVCOMP(1),
463 * Ensure VGA is selected.
465 static void cp_clcd_enable(struct clcd_fb
*fb
)
469 if (fb
->fb
.var
.bits_per_pixel
<= 8)
470 val
= CM_CTRL_LCDMUXSEL_VGA_8421BPP
;
471 else if (fb
->fb
.var
.bits_per_pixel
<= 16)
472 val
= CM_CTRL_LCDMUXSEL_VGA_16BPP
;
474 val
= 0; /* no idea for this, don't trust the docs */
476 cm_control(CM_CTRL_LCDMUXSEL_MASK
|
482 CM_CTRL_n24BITEN
, val
);
485 static unsigned long framesize
= SZ_1M
;
487 static int cp_clcd_setup(struct clcd_fb
*fb
)
493 fb
->fb
.screen_base
= dma_alloc_writecombine(&fb
->dev
->dev
, framesize
,
495 if (!fb
->fb
.screen_base
) {
496 printk(KERN_ERR
"CLCD: unable to map framebuffer\n");
500 fb
->fb
.fix
.smem_start
= dma
;
501 fb
->fb
.fix
.smem_len
= framesize
;
506 static int cp_clcd_mmap(struct clcd_fb
*fb
, struct vm_area_struct
*vma
)
508 return dma_mmap_writecombine(&fb
->dev
->dev
, vma
,
510 fb
->fb
.fix
.smem_start
,
511 fb
->fb
.fix
.smem_len
);
514 static void cp_clcd_remove(struct clcd_fb
*fb
)
516 dma_free_writecombine(&fb
->dev
->dev
, fb
->fb
.fix
.smem_len
,
517 fb
->fb
.screen_base
, fb
->fb
.fix
.smem_start
);
520 static struct clcd_board clcd_data
= {
521 .name
= "Integrator/CP",
522 .check
= clcdfb_check
,
523 .decode
= clcdfb_decode
,
524 .enable
= cp_clcd_enable
,
525 .setup
= cp_clcd_setup
,
526 .mmap
= cp_clcd_mmap
,
527 .remove
= cp_clcd_remove
,
530 static struct amba_device clcd_device
= {
533 .coherent_dma_mask
= ~0,
534 .platform_data
= &clcd_data
,
537 .start
= INTCP_PA_CLCD_BASE
,
538 .end
= INTCP_PA_CLCD_BASE
+ SZ_4K
- 1,
539 .flags
= IORESOURCE_MEM
,
542 .irq
= { IRQ_CP_CLCDCINT
, NO_IRQ
},
546 static struct amba_device
*amba_devs
[] __initdata
= {
552 static void __init
intcp_init(void)
556 clk_register(&cp_clcd_clk
);
557 clk_register(&cp_mmci_clk
);
559 platform_add_devices(intcp_devs
, ARRAY_SIZE(intcp_devs
));
561 for (i
= 0; i
< ARRAY_SIZE(amba_devs
); i
++) {
562 struct amba_device
*d
= amba_devs
[i
];
563 amba_device_register(d
, &iomem_resource
);
567 #define TIMER_CTRL_IE (1 << 5) /* Interrupt Enable */
569 static void __init
intcp_timer_init(void)
571 integrator_time_init(1000000 / HZ
, TIMER_CTRL_IE
);
574 static struct sys_timer cp_timer
= {
575 .init
= intcp_timer_init
,
576 .offset
= integrator_gettimeoffset
,
579 MACHINE_START(CINTEGRATOR
, "ARM-IntegratorCP")
580 /* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
581 .phys_io
= 0x16000000,
582 .io_pg_offst
= ((0xf1600000) >> 18) & 0xfffc,
583 .boot_params
= 0x00000100,
584 .map_io
= intcp_map_io
,
585 .init_irq
= intcp_init_irq
,
587 .init_machine
= intcp_init
,