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1da177e4 LT |
1 | /* |
2 | * linux/arch/arm/mach-pxa/generic.c | |
3 | * | |
4 | * Author: Nicolas Pitre | |
5 | * Created: Jun 15, 2001 | |
6 | * Copyright: MontaVista Software Inc. | |
7 | * | |
8 | * Code common to all PXA machines. | |
9 | * | |
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. | |
13 | * | |
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 | |
17 | * need be. | |
18 | */ | |
19 | #include <linux/module.h> | |
20 | #include <linux/kernel.h> | |
21 | #include <linux/init.h> | |
22 | #include <linux/delay.h> | |
23 | #include <linux/device.h> | |
24 | #include <linux/ioport.h> | |
25 | #include <linux/pm.h> | |
4e57b681 | 26 | #include <linux/string.h> |
1da177e4 LT |
27 | |
28 | #include <asm/hardware.h> | |
29 | #include <asm/irq.h> | |
30 | #include <asm/system.h> | |
31 | #include <asm/pgtable.h> | |
32 | #include <asm/mach/map.h> | |
33 | ||
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> | |
6f475c01 | 38 | #include <asm/arch/irda.h> |
eb9181a2 | 39 | #include <asm/arch/i2c.h> |
1da177e4 LT |
40 | |
41 | #include "generic.h" | |
42 | ||
43 | /* | |
44 | * Handy function to set GPIO alternate functions | |
45 | */ | |
46 | ||
47 | void pxa_gpio_mode(int gpio_mode) | |
48 | { | |
49 | unsigned long flags; | |
50 | int gpio = gpio_mode & GPIO_MD_MASK_NR; | |
51 | int fn = (gpio_mode & GPIO_MD_MASK_FN) >> 8; | |
52 | int gafr; | |
53 | ||
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); | |
61 | else | |
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); | |
66 | } | |
67 | ||
68 | EXPORT_SYMBOL(pxa_gpio_mode); | |
69 | ||
70 | /* | |
71 | * Routine to safely enable or disable a clock in the CKEN | |
72 | */ | |
73 | void pxa_set_cken(int clock, int enable) | |
74 | { | |
75 | unsigned long flags; | |
76 | local_irq_save(flags); | |
77 | ||
78 | if (enable) | |
79 | CKEN |= clock; | |
80 | else | |
81 | CKEN &= ~clock; | |
82 | ||
83 | local_irq_restore(flags); | |
84 | } | |
85 | ||
86 | EXPORT_SYMBOL(pxa_set_cken); | |
87 | ||
88 | /* | |
89 | * Intel PXA2xx internal register mapping. | |
90 | * | |
91 | * Note 1: not all PXA2xx variants implement all those addresses. | |
92 | * | |
93 | * Note 2: virtual 0xfffe0000-0xffffffff is reserved for the vector table | |
94 | * and cache flush area. | |
95 | */ | |
96 | static struct map_desc standard_io_desc[] __initdata = { | |
6f9182eb DS |
97 | { /* Devs */ |
98 | .virtual = 0xf2000000, | |
99 | .pfn = __phys_to_pfn(0x40000000), | |
100 | .length = 0x02000000, | |
101 | .type = MT_DEVICE | |
102 | }, { /* LCD */ | |
103 | .virtual = 0xf4000000, | |
104 | .pfn = __phys_to_pfn(0x44000000), | |
105 | .length = 0x00100000, | |
106 | .type = MT_DEVICE | |
107 | }, { /* Mem Ctl */ | |
108 | .virtual = 0xf6000000, | |
109 | .pfn = __phys_to_pfn(0x48000000), | |
110 | .length = 0x00100000, | |
111 | .type = MT_DEVICE | |
112 | }, { /* USB host */ | |
113 | .virtual = 0xf8000000, | |
114 | .pfn = __phys_to_pfn(0x4c000000), | |
115 | .length = 0x00100000, | |
116 | .type = MT_DEVICE | |
117 | }, { /* Camera */ | |
118 | .virtual = 0xfa000000, | |
119 | .pfn = __phys_to_pfn(0x50000000), | |
120 | .length = 0x00100000, | |
121 | .type = MT_DEVICE | |
122 | }, { /* IMem ctl */ | |
123 | .virtual = 0xfe000000, | |
124 | .pfn = __phys_to_pfn(0x58000000), | |
125 | .length = 0x00100000, | |
126 | .type = MT_DEVICE | |
127 | }, { /* UNCACHED_PHYS_0 */ | |
128 | .virtual = 0xff000000, | |
129 | .pfn = __phys_to_pfn(0x00000000), | |
130 | .length = 0x00100000, | |
131 | .type = MT_DEVICE | |
132 | } | |
1da177e4 LT |
133 | }; |
134 | ||
135 | void __init pxa_map_io(void) | |
136 | { | |
137 | iotable_init(standard_io_desc, ARRAY_SIZE(standard_io_desc)); | |
138 | get_clk_frequency_khz(1); | |
139 | } | |
140 | ||
141 | ||
142 | static struct resource pxamci_resources[] = { | |
143 | [0] = { | |
144 | .start = 0x41100000, | |
145 | .end = 0x41100fff, | |
146 | .flags = IORESOURCE_MEM, | |
147 | }, | |
148 | [1] = { | |
149 | .start = IRQ_MMC, | |
150 | .end = IRQ_MMC, | |
151 | .flags = IORESOURCE_IRQ, | |
152 | }, | |
153 | }; | |
154 | ||
155 | static u64 pxamci_dmamask = 0xffffffffUL; | |
156 | ||
157 | static struct platform_device pxamci_device = { | |
158 | .name = "pxa2xx-mci", | |
159 | .id = -1, | |
160 | .dev = { | |
161 | .dma_mask = &pxamci_dmamask, | |
162 | .coherent_dma_mask = 0xffffffff, | |
163 | }, | |
164 | .num_resources = ARRAY_SIZE(pxamci_resources), | |
165 | .resource = pxamci_resources, | |
166 | }; | |
167 | ||
168 | void __init pxa_set_mci_info(struct pxamci_platform_data *info) | |
169 | { | |
170 | pxamci_device.dev.platform_data = info; | |
171 | } | |
172 | ||
173 | ||
174 | static struct pxa2xx_udc_mach_info pxa_udc_info; | |
175 | ||
176 | void __init pxa_set_udc_info(struct pxa2xx_udc_mach_info *info) | |
177 | { | |
178 | memcpy(&pxa_udc_info, info, sizeof *info); | |
179 | } | |
180 | ||
181 | static struct resource pxa2xx_udc_resources[] = { | |
182 | [0] = { | |
183 | .start = 0x40600000, | |
184 | .end = 0x4060ffff, | |
185 | .flags = IORESOURCE_MEM, | |
186 | }, | |
187 | [1] = { | |
188 | .start = IRQ_USB, | |
189 | .end = IRQ_USB, | |
190 | .flags = IORESOURCE_IRQ, | |
191 | }, | |
192 | }; | |
193 | ||
194 | static u64 udc_dma_mask = ~(u32)0; | |
195 | ||
196 | static struct platform_device udc_device = { | |
197 | .name = "pxa2xx-udc", | |
198 | .id = -1, | |
199 | .resource = pxa2xx_udc_resources, | |
200 | .num_resources = ARRAY_SIZE(pxa2xx_udc_resources), | |
201 | .dev = { | |
202 | .platform_data = &pxa_udc_info, | |
203 | .dma_mask = &udc_dma_mask, | |
204 | } | |
205 | }; | |
206 | ||
207 | static struct pxafb_mach_info pxa_fb_info; | |
208 | ||
209 | void __init set_pxa_fb_info(struct pxafb_mach_info *hard_pxa_fb_info) | |
210 | { | |
211 | memcpy(&pxa_fb_info,hard_pxa_fb_info,sizeof(struct pxafb_mach_info)); | |
212 | } | |
213 | ||
214 | static struct resource pxafb_resources[] = { | |
215 | [0] = { | |
216 | .start = 0x44000000, | |
217 | .end = 0x4400ffff, | |
218 | .flags = IORESOURCE_MEM, | |
219 | }, | |
220 | [1] = { | |
221 | .start = IRQ_LCD, | |
222 | .end = IRQ_LCD, | |
223 | .flags = IORESOURCE_IRQ, | |
224 | }, | |
225 | }; | |
226 | ||
227 | static u64 fb_dma_mask = ~(u64)0; | |
228 | ||
229 | static struct platform_device pxafb_device = { | |
230 | .name = "pxa2xx-fb", | |
231 | .id = -1, | |
232 | .dev = { | |
233 | .platform_data = &pxa_fb_info, | |
234 | .dma_mask = &fb_dma_mask, | |
235 | .coherent_dma_mask = 0xffffffff, | |
236 | }, | |
237 | .num_resources = ARRAY_SIZE(pxafb_resources), | |
238 | .resource = pxafb_resources, | |
239 | }; | |
240 | ||
cb38c569 RP |
241 | void __init set_pxa_fb_parent(struct device *parent_dev) |
242 | { | |
243 | pxafb_device.dev.parent = parent_dev; | |
244 | } | |
245 | ||
1da177e4 LT |
246 | static struct platform_device ffuart_device = { |
247 | .name = "pxa2xx-uart", | |
248 | .id = 0, | |
249 | }; | |
250 | static struct platform_device btuart_device = { | |
251 | .name = "pxa2xx-uart", | |
252 | .id = 1, | |
253 | }; | |
254 | static struct platform_device stuart_device = { | |
255 | .name = "pxa2xx-uart", | |
256 | .id = 2, | |
257 | }; | |
d9e29649 MR |
258 | static struct platform_device hwuart_device = { |
259 | .name = "pxa2xx-uart", | |
260 | .id = 3, | |
261 | }; | |
1da177e4 | 262 | |
bb9bffcb RK |
263 | static struct resource i2c_resources[] = { |
264 | { | |
265 | .start = 0x40301680, | |
266 | .end = 0x403016a3, | |
267 | .flags = IORESOURCE_MEM, | |
268 | }, { | |
269 | .start = IRQ_I2C, | |
270 | .end = IRQ_I2C, | |
271 | .flags = IORESOURCE_IRQ, | |
272 | }, | |
273 | }; | |
274 | ||
275 | static struct platform_device i2c_device = { | |
276 | .name = "pxa2xx-i2c", | |
277 | .id = 0, | |
278 | .resource = i2c_resources, | |
279 | .num_resources = ARRAY_SIZE(i2c_resources), | |
280 | }; | |
281 | ||
282 | void __init pxa_set_i2c_info(struct i2c_pxa_platform_data *info) | |
283 | { | |
284 | i2c_device.dev.platform_data = info; | |
285 | } | |
286 | ||
b2640b42 MR |
287 | static struct resource i2s_resources[] = { |
288 | { | |
289 | .start = 0x40400000, | |
290 | .end = 0x40400083, | |
291 | .flags = IORESOURCE_MEM, | |
292 | }, { | |
293 | .start = IRQ_I2S, | |
294 | .end = IRQ_I2S, | |
295 | .flags = IORESOURCE_IRQ, | |
296 | }, | |
297 | }; | |
298 | ||
299 | static struct platform_device i2s_device = { | |
300 | .name = "pxa2xx-i2s", | |
301 | .id = -1, | |
b5723521 | 302 | .resource = i2s_resources, |
b2640b42 MR |
303 | .num_resources = ARRAY_SIZE(i2s_resources), |
304 | }; | |
305 | ||
6f475c01 NP |
306 | static u64 pxaficp_dmamask = ~(u32)0; |
307 | ||
308 | static struct platform_device pxaficp_device = { | |
309 | .name = "pxa2xx-ir", | |
310 | .id = -1, | |
311 | .dev = { | |
312 | .dma_mask = &pxaficp_dmamask, | |
313 | .coherent_dma_mask = 0xffffffff, | |
314 | }, | |
315 | }; | |
316 | ||
317 | void __init pxa_set_ficp_info(struct pxaficp_platform_data *info) | |
318 | { | |
319 | pxaficp_device.dev.platform_data = info; | |
320 | } | |
321 | ||
1da177e4 LT |
322 | static struct platform_device *devices[] __initdata = { |
323 | &pxamci_device, | |
324 | &udc_device, | |
325 | &pxafb_device, | |
326 | &ffuart_device, | |
327 | &btuart_device, | |
328 | &stuart_device, | |
6f475c01 | 329 | &pxaficp_device, |
bb9bffcb | 330 | &i2c_device, |
b2640b42 | 331 | &i2s_device, |
1da177e4 LT |
332 | }; |
333 | ||
334 | static int __init pxa_init(void) | |
335 | { | |
d9e29649 MR |
336 | int cpuid, ret; |
337 | ||
338 | ret = platform_add_devices(devices, ARRAY_SIZE(devices)); | |
339 | if (ret) | |
340 | return ret; | |
341 | ||
342 | /* Only add HWUART for PXA255/26x; PXA210/250/27x do not have it. */ | |
343 | cpuid = read_cpuid(CPUID_ID); | |
344 | if (((cpuid >> 4) & 0xfff) == 0x2d0 || | |
345 | ((cpuid >> 4) & 0xfff) == 0x290) | |
346 | ret = platform_device_register(&hwuart_device); | |
347 | ||
348 | return ret; | |
1da177e4 LT |
349 | } |
350 | ||
351 | subsys_initcall(pxa_init); |