2 * linux/arch/arm/mach-pxa/generic.c
4 * Author: Nicolas Pitre
5 * Created: Jun 15, 2001
6 * Copyright: MontaVista Software Inc.
8 * Code common to all PXA machines.
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
14 * Since this file should be linked before any other machine specific file,
15 * the __initcall() here will be executed first. This serves as default
16 * initialization stuff for PXA machines which can be overridden later if
19 #include <linux/module.h>
20 #include <linux/kernel.h>
21 #include <linux/init.h>
22 #include <linux/delay.h>
23 #include <linux/platform_device.h>
24 #include <linux/ioport.h>
26 #include <linux/string.h>
28 #include <asm/hardware.h>
30 #include <asm/system.h>
31 #include <asm/pgtable.h>
32 #include <asm/mach/map.h>
34 #include <asm/arch/pxa-regs.h>
35 #include <asm/arch/udc.h>
36 #include <asm/arch/pxafb.h>
37 #include <asm/arch/mmc.h>
38 #include <asm/arch/irda.h>
39 #include <asm/arch/i2c.h>
44 * Handy function to set GPIO alternate functions
47 void pxa_gpio_mode(int gpio_mode
)
50 int gpio
= gpio_mode
& GPIO_MD_MASK_NR
;
51 int fn
= (gpio_mode
& GPIO_MD_MASK_FN
) >> 8;
54 local_irq_save(flags
);
55 if (gpio_mode
& GPIO_DFLT_LOW
)
56 GPCR(gpio
) = GPIO_bit(gpio
);
57 else if (gpio_mode
& GPIO_DFLT_HIGH
)
58 GPSR(gpio
) = GPIO_bit(gpio
);
59 if (gpio_mode
& GPIO_MD_MASK_DIR
)
60 GPDR(gpio
) |= GPIO_bit(gpio
);
62 GPDR(gpio
) &= ~GPIO_bit(gpio
);
63 gafr
= GAFR(gpio
) & ~(0x3 << (((gpio
) & 0xf)*2));
64 GAFR(gpio
) = gafr
| (fn
<< (((gpio
) & 0xf)*2));
65 local_irq_restore(flags
);
68 EXPORT_SYMBOL(pxa_gpio_mode
);
71 * Routine to safely enable or disable a clock in the CKEN
73 void pxa_set_cken(int clock
, int enable
)
76 local_irq_save(flags
);
83 local_irq_restore(flags
);
86 EXPORT_SYMBOL(pxa_set_cken
);
89 * Intel PXA2xx internal register mapping.
91 * Note 1: not all PXA2xx variants implement all those addresses.
93 * Note 2: virtual 0xfffe0000-0xffffffff is reserved for the vector table
94 * and cache flush area.
96 static struct map_desc standard_io_desc
[] __initdata
= {
98 .virtual = 0xf2000000,
99 .pfn
= __phys_to_pfn(0x40000000),
100 .length
= 0x02000000,
103 .virtual = 0xf4000000,
104 .pfn
= __phys_to_pfn(0x44000000),
105 .length
= 0x00100000,
108 .virtual = 0xf6000000,
109 .pfn
= __phys_to_pfn(0x48000000),
110 .length
= 0x00100000,
113 .virtual = 0xf8000000,
114 .pfn
= __phys_to_pfn(0x4c000000),
115 .length
= 0x00100000,
118 .virtual = 0xfa000000,
119 .pfn
= __phys_to_pfn(0x50000000),
120 .length
= 0x00100000,
123 .virtual = 0xfe000000,
124 .pfn
= __phys_to_pfn(0x58000000),
125 .length
= 0x00100000,
127 }, { /* UNCACHED_PHYS_0 */
128 .virtual = 0xff000000,
129 .pfn
= __phys_to_pfn(0x00000000),
130 .length
= 0x00100000,
135 void __init
pxa_map_io(void)
137 iotable_init(standard_io_desc
, ARRAY_SIZE(standard_io_desc
));
138 get_clk_frequency_khz(1);
142 static struct resource pxamci_resources
[] = {
146 .flags
= IORESOURCE_MEM
,
151 .flags
= IORESOURCE_IRQ
,
155 static u64 pxamci_dmamask
= 0xffffffffUL
;
157 static struct platform_device pxamci_device
= {
158 .name
= "pxa2xx-mci",
161 .dma_mask
= &pxamci_dmamask
,
162 .coherent_dma_mask
= 0xffffffff,
164 .num_resources
= ARRAY_SIZE(pxamci_resources
),
165 .resource
= pxamci_resources
,
168 void __init
pxa_set_mci_info(struct pxamci_platform_data
*info
)
170 pxamci_device
.dev
.platform_data
= info
;
174 static struct pxa2xx_udc_mach_info pxa_udc_info
;
176 void __init
pxa_set_udc_info(struct pxa2xx_udc_mach_info
*info
)
178 memcpy(&pxa_udc_info
, info
, sizeof *info
);
181 static struct resource pxa2xx_udc_resources
[] = {
185 .flags
= IORESOURCE_MEM
,
190 .flags
= IORESOURCE_IRQ
,
194 static u64 udc_dma_mask
= ~(u32
)0;
196 static struct platform_device udc_device
= {
197 .name
= "pxa2xx-udc",
199 .resource
= pxa2xx_udc_resources
,
200 .num_resources
= ARRAY_SIZE(pxa2xx_udc_resources
),
202 .platform_data
= &pxa_udc_info
,
203 .dma_mask
= &udc_dma_mask
,
207 static struct resource pxafb_resources
[] = {
211 .flags
= IORESOURCE_MEM
,
216 .flags
= IORESOURCE_IRQ
,
220 static u64 fb_dma_mask
= ~(u64
)0;
222 static struct platform_device pxafb_device
= {
226 .dma_mask
= &fb_dma_mask
,
227 .coherent_dma_mask
= 0xffffffff,
229 .num_resources
= ARRAY_SIZE(pxafb_resources
),
230 .resource
= pxafb_resources
,
233 void __init
set_pxa_fb_info(struct pxafb_mach_info
*info
)
235 pxafb_device
.dev
.platform_data
= info
;
238 void __init
set_pxa_fb_parent(struct device
*parent_dev
)
240 pxafb_device
.dev
.parent
= parent_dev
;
243 static struct platform_device ffuart_device
= {
244 .name
= "pxa2xx-uart",
247 static struct platform_device btuart_device
= {
248 .name
= "pxa2xx-uart",
251 static struct platform_device stuart_device
= {
252 .name
= "pxa2xx-uart",
255 static struct platform_device hwuart_device
= {
256 .name
= "pxa2xx-uart",
260 static struct resource i2c_resources
[] = {
264 .flags
= IORESOURCE_MEM
,
268 .flags
= IORESOURCE_IRQ
,
272 static struct platform_device i2c_device
= {
273 .name
= "pxa2xx-i2c",
275 .resource
= i2c_resources
,
276 .num_resources
= ARRAY_SIZE(i2c_resources
),
279 void __init
pxa_set_i2c_info(struct i2c_pxa_platform_data
*info
)
281 i2c_device
.dev
.platform_data
= info
;
284 static struct resource i2s_resources
[] = {
288 .flags
= IORESOURCE_MEM
,
292 .flags
= IORESOURCE_IRQ
,
296 static struct platform_device i2s_device
= {
297 .name
= "pxa2xx-i2s",
299 .resource
= i2s_resources
,
300 .num_resources
= ARRAY_SIZE(i2s_resources
),
303 static u64 pxaficp_dmamask
= ~(u32
)0;
305 static struct platform_device pxaficp_device
= {
309 .dma_mask
= &pxaficp_dmamask
,
310 .coherent_dma_mask
= 0xffffffff,
314 void __init
pxa_set_ficp_info(struct pxaficp_platform_data
*info
)
316 pxaficp_device
.dev
.platform_data
= info
;
319 static struct platform_device pxartc_device
= {
320 .name
= "sa1100-rtc",
324 static struct platform_device
*devices
[] __initdata
= {
337 static int __init
pxa_init(void)
341 ret
= platform_add_devices(devices
, ARRAY_SIZE(devices
));
345 /* Only add HWUART for PXA255/26x; PXA210/250/27x do not have it. */
346 cpuid
= read_cpuid(CPUID_ID
);
347 if (((cpuid
>> 4) & 0xfff) == 0x2d0 ||
348 ((cpuid
>> 4) & 0xfff) == 0x290)
349 ret
= platform_device_register(&hwuart_device
);
354 subsys_initcall(pxa_init
);