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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> | |
26 | ||
27 | #include <asm/hardware.h> | |
28 | #include <asm/irq.h> | |
29 | #include <asm/system.h> | |
30 | #include <asm/pgtable.h> | |
31 | #include <asm/mach/map.h> | |
32 | ||
33 | #include <asm/arch/pxa-regs.h> | |
34 | #include <asm/arch/udc.h> | |
35 | #include <asm/arch/pxafb.h> | |
36 | #include <asm/arch/mmc.h> | |
37 | ||
38 | #include "generic.h" | |
39 | ||
40 | /* | |
41 | * Handy function to set GPIO alternate functions | |
42 | */ | |
43 | ||
44 | void pxa_gpio_mode(int gpio_mode) | |
45 | { | |
46 | unsigned long flags; | |
47 | int gpio = gpio_mode & GPIO_MD_MASK_NR; | |
48 | int fn = (gpio_mode & GPIO_MD_MASK_FN) >> 8; | |
49 | int gafr; | |
50 | ||
51 | local_irq_save(flags); | |
52 | if (gpio_mode & GPIO_DFLT_LOW) | |
53 | GPCR(gpio) = GPIO_bit(gpio); | |
54 | else if (gpio_mode & GPIO_DFLT_HIGH) | |
55 | GPSR(gpio) = GPIO_bit(gpio); | |
56 | if (gpio_mode & GPIO_MD_MASK_DIR) | |
57 | GPDR(gpio) |= GPIO_bit(gpio); | |
58 | else | |
59 | GPDR(gpio) &= ~GPIO_bit(gpio); | |
60 | gafr = GAFR(gpio) & ~(0x3 << (((gpio) & 0xf)*2)); | |
61 | GAFR(gpio) = gafr | (fn << (((gpio) & 0xf)*2)); | |
62 | local_irq_restore(flags); | |
63 | } | |
64 | ||
65 | EXPORT_SYMBOL(pxa_gpio_mode); | |
66 | ||
67 | /* | |
68 | * Routine to safely enable or disable a clock in the CKEN | |
69 | */ | |
70 | void pxa_set_cken(int clock, int enable) | |
71 | { | |
72 | unsigned long flags; | |
73 | local_irq_save(flags); | |
74 | ||
75 | if (enable) | |
76 | CKEN |= clock; | |
77 | else | |
78 | CKEN &= ~clock; | |
79 | ||
80 | local_irq_restore(flags); | |
81 | } | |
82 | ||
83 | EXPORT_SYMBOL(pxa_set_cken); | |
84 | ||
85 | /* | |
86 | * Intel PXA2xx internal register mapping. | |
87 | * | |
88 | * Note 1: not all PXA2xx variants implement all those addresses. | |
89 | * | |
90 | * Note 2: virtual 0xfffe0000-0xffffffff is reserved for the vector table | |
91 | * and cache flush area. | |
92 | */ | |
93 | static struct map_desc standard_io_desc[] __initdata = { | |
94 | /* virtual physical length type */ | |
95 | { 0xf2000000, 0x40000000, 0x02000000, MT_DEVICE }, /* Devs */ | |
96 | { 0xf4000000, 0x44000000, 0x00100000, MT_DEVICE }, /* LCD */ | |
97 | { 0xf6000000, 0x48000000, 0x00100000, MT_DEVICE }, /* Mem Ctl */ | |
98 | { 0xf8000000, 0x4c000000, 0x00100000, MT_DEVICE }, /* USB host */ | |
99 | { 0xfa000000, 0x50000000, 0x00100000, MT_DEVICE }, /* Camera */ | |
100 | { 0xfe000000, 0x58000000, 0x00100000, MT_DEVICE }, /* IMem ctl */ | |
101 | { 0xff000000, 0x00000000, 0x00100000, MT_DEVICE } /* UNCACHED_PHYS_0 */ | |
102 | }; | |
103 | ||
104 | void __init pxa_map_io(void) | |
105 | { | |
106 | iotable_init(standard_io_desc, ARRAY_SIZE(standard_io_desc)); | |
107 | get_clk_frequency_khz(1); | |
108 | } | |
109 | ||
110 | ||
111 | static struct resource pxamci_resources[] = { | |
112 | [0] = { | |
113 | .start = 0x41100000, | |
114 | .end = 0x41100fff, | |
115 | .flags = IORESOURCE_MEM, | |
116 | }, | |
117 | [1] = { | |
118 | .start = IRQ_MMC, | |
119 | .end = IRQ_MMC, | |
120 | .flags = IORESOURCE_IRQ, | |
121 | }, | |
122 | }; | |
123 | ||
124 | static u64 pxamci_dmamask = 0xffffffffUL; | |
125 | ||
126 | static struct platform_device pxamci_device = { | |
127 | .name = "pxa2xx-mci", | |
128 | .id = -1, | |
129 | .dev = { | |
130 | .dma_mask = &pxamci_dmamask, | |
131 | .coherent_dma_mask = 0xffffffff, | |
132 | }, | |
133 | .num_resources = ARRAY_SIZE(pxamci_resources), | |
134 | .resource = pxamci_resources, | |
135 | }; | |
136 | ||
137 | void __init pxa_set_mci_info(struct pxamci_platform_data *info) | |
138 | { | |
139 | pxamci_device.dev.platform_data = info; | |
140 | } | |
141 | ||
142 | ||
143 | static struct pxa2xx_udc_mach_info pxa_udc_info; | |
144 | ||
145 | void __init pxa_set_udc_info(struct pxa2xx_udc_mach_info *info) | |
146 | { | |
147 | memcpy(&pxa_udc_info, info, sizeof *info); | |
148 | } | |
149 | ||
150 | static struct resource pxa2xx_udc_resources[] = { | |
151 | [0] = { | |
152 | .start = 0x40600000, | |
153 | .end = 0x4060ffff, | |
154 | .flags = IORESOURCE_MEM, | |
155 | }, | |
156 | [1] = { | |
157 | .start = IRQ_USB, | |
158 | .end = IRQ_USB, | |
159 | .flags = IORESOURCE_IRQ, | |
160 | }, | |
161 | }; | |
162 | ||
163 | static u64 udc_dma_mask = ~(u32)0; | |
164 | ||
165 | static struct platform_device udc_device = { | |
166 | .name = "pxa2xx-udc", | |
167 | .id = -1, | |
168 | .resource = pxa2xx_udc_resources, | |
169 | .num_resources = ARRAY_SIZE(pxa2xx_udc_resources), | |
170 | .dev = { | |
171 | .platform_data = &pxa_udc_info, | |
172 | .dma_mask = &udc_dma_mask, | |
173 | } | |
174 | }; | |
175 | ||
176 | static struct pxafb_mach_info pxa_fb_info; | |
177 | ||
178 | void __init set_pxa_fb_info(struct pxafb_mach_info *hard_pxa_fb_info) | |
179 | { | |
180 | memcpy(&pxa_fb_info,hard_pxa_fb_info,sizeof(struct pxafb_mach_info)); | |
181 | } | |
182 | ||
183 | static struct resource pxafb_resources[] = { | |
184 | [0] = { | |
185 | .start = 0x44000000, | |
186 | .end = 0x4400ffff, | |
187 | .flags = IORESOURCE_MEM, | |
188 | }, | |
189 | [1] = { | |
190 | .start = IRQ_LCD, | |
191 | .end = IRQ_LCD, | |
192 | .flags = IORESOURCE_IRQ, | |
193 | }, | |
194 | }; | |
195 | ||
196 | static u64 fb_dma_mask = ~(u64)0; | |
197 | ||
198 | static struct platform_device pxafb_device = { | |
199 | .name = "pxa2xx-fb", | |
200 | .id = -1, | |
201 | .dev = { | |
202 | .platform_data = &pxa_fb_info, | |
203 | .dma_mask = &fb_dma_mask, | |
204 | .coherent_dma_mask = 0xffffffff, | |
205 | }, | |
206 | .num_resources = ARRAY_SIZE(pxafb_resources), | |
207 | .resource = pxafb_resources, | |
208 | }; | |
209 | ||
210 | static struct platform_device ffuart_device = { | |
211 | .name = "pxa2xx-uart", | |
212 | .id = 0, | |
213 | }; | |
214 | static struct platform_device btuart_device = { | |
215 | .name = "pxa2xx-uart", | |
216 | .id = 1, | |
217 | }; | |
218 | static struct platform_device stuart_device = { | |
219 | .name = "pxa2xx-uart", | |
220 | .id = 2, | |
221 | }; | |
222 | ||
223 | static struct platform_device *devices[] __initdata = { | |
224 | &pxamci_device, | |
225 | &udc_device, | |
226 | &pxafb_device, | |
227 | &ffuart_device, | |
228 | &btuart_device, | |
229 | &stuart_device, | |
230 | }; | |
231 | ||
232 | static int __init pxa_init(void) | |
233 | { | |
234 | return platform_add_devices(devices, ARRAY_SIZE(devices)); | |
235 | } | |
236 | ||
237 | subsys_initcall(pxa_init); |