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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/arm/mach-pxa/generic.c
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'arch/arm/mach-pxa/generic.c')
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1 files changed, 237 insertions, 0 deletions
diff --git a/arch/arm/mach-pxa/generic.c b/arch/arm/mach-pxa/generic.c
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+++ b/arch/arm/mach-pxa/generic.c
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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
44void 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
65EXPORT_SYMBOL(pxa_gpio_mode);
66
67/*
68 * Routine to safely enable or disable a clock in the CKEN
69 */
70void 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
83EXPORT_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 */
93static 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
104void __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
111static 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
124static u64 pxamci_dmamask = 0xffffffffUL;
125
126static 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
137void __init pxa_set_mci_info(struct pxamci_platform_data *info)
138{
139 pxamci_device.dev.platform_data = info;
140}
141
142
143static struct pxa2xx_udc_mach_info pxa_udc_info;
144
145void __init pxa_set_udc_info(struct pxa2xx_udc_mach_info *info)
146{
147 memcpy(&pxa_udc_info, info, sizeof *info);
148}
149
150static 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
163static u64 udc_dma_mask = ~(u32)0;
164
165static 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
176static struct pxafb_mach_info pxa_fb_info;
177
178void __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
183static 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
196static u64 fb_dma_mask = ~(u64)0;
197
198static 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
210static struct platform_device ffuart_device = {
211 .name = "pxa2xx-uart",
212 .id = 0,
213};
214static struct platform_device btuart_device = {
215 .name = "pxa2xx-uart",
216 .id = 1,
217};
218static struct platform_device stuart_device = {
219 .name = "pxa2xx-uart",
220 .id = 2,
221};
222
223static 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
232static int __init pxa_init(void)
233{
234 return platform_add_devices(devices, ARRAY_SIZE(devices));
235}
236
237subsys_initcall(pxa_init);