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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-lh7a40x/arch-lpd7a40x.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-lh7a40x/arch-lpd7a40x.c')
-rw-r--r--arch/arm/mach-lh7a40x/arch-lpd7a40x.c286
1 files changed, 286 insertions, 0 deletions
diff --git a/arch/arm/mach-lh7a40x/arch-lpd7a40x.c b/arch/arm/mach-lh7a40x/arch-lpd7a40x.c
new file mode 100644
index 000000000000..c823447a150f
--- /dev/null
+++ b/arch/arm/mach-lh7a40x/arch-lpd7a40x.c
@@ -0,0 +1,286 @@
1/* arch/arm/mach-lh7a40x/arch-lpd7a40x.c
2 *
3 * Copyright (C) 2004 Logic Product Development
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * version 2 as published by the Free Software Foundation.
8 *
9 */
10
11#include <linux/tty.h>
12#include <linux/init.h>
13#include <linux/device.h>
14#include <linux/interrupt.h>
15
16#include <asm/hardware.h>
17#include <asm/setup.h>
18#include <asm/mach-types.h>
19#include <asm/mach/arch.h>
20#include <asm/irq.h>
21#include <asm/mach/irq.h>
22#include <asm/mach/map.h>
23
24#include "common.h"
25
26static struct resource smc91x_resources[] = {
27 [0] = {
28 .start = CPLD00_PHYS,
29 .end = CPLD00_PHYS + CPLD00_SIZE - 1, /* Only needs 16B */
30 .flags = IORESOURCE_MEM,
31 },
32
33 [1] = {
34 .start = IRQ_LPD7A40X_ETH_INT,
35 .end = IRQ_LPD7A40X_ETH_INT,
36 .flags = IORESOURCE_IRQ,
37 },
38
39};
40
41static struct platform_device smc91x_device = {
42 .name = "smc91x",
43 .id = 0,
44 .num_resources = ARRAY_SIZE(smc91x_resources),
45 .resource = smc91x_resources,
46};
47
48static struct resource lh7a40x_usbclient_resources[] = {
49 [0] = {
50 .start = USB_PHYS,
51 .end = (USB_PHYS + 0xFF),
52 .flags = IORESOURCE_MEM,
53 },
54 [1] = {
55 .start = IRQ_USBINTR,
56 .end = IRQ_USBINTR,
57 .flags = IORESOURCE_IRQ,
58 },
59};
60
61static u64 lh7a40x_usbclient_dma_mask = 0xffffffffUL;
62
63static struct platform_device lh7a40x_usbclient_device = {
64 .name = "lh7a40x_udc",
65 .id = 0,
66 .dev = {
67 .dma_mask = &lh7a40x_usbclient_dma_mask,
68 .coherent_dma_mask = 0xffffffffUL,
69 },
70 .num_resources = ARRAY_SIZE (lh7a40x_usbclient_resources),
71 .resource = lh7a40x_usbclient_resources,
72};
73
74#if defined (CONFIG_ARCH_LH7A404)
75
76static struct resource lh7a404_usbhost_resources [] = {
77 [0] = {
78 .start = USBH_PHYS,
79 .end = (USBH_PHYS + 0xFF),
80 .flags = IORESOURCE_MEM,
81 },
82 [1] = {
83 .start = IRQ_USHINTR,
84 .end = IRQ_USHINTR,
85 .flags = IORESOURCE_IRQ,
86 },
87};
88
89static u64 lh7a404_usbhost_dma_mask = 0xffffffffUL;
90
91static struct platform_device lh7a404_usbhost_device = {
92 .name = "lh7a404-ohci",
93 .id = 0,
94 .dev = {
95 .dma_mask = &lh7a404_usbhost_dma_mask,
96 .coherent_dma_mask = 0xffffffffUL,
97 },
98 .num_resources = ARRAY_SIZE (lh7a404_usbhost_resources),
99 .resource = lh7a404_usbhost_resources,
100};
101
102#endif
103
104static struct platform_device *lpd7a40x_devs[] __initdata = {
105 &smc91x_device,
106 &lh7a40x_usbclient_device,
107#if defined (CONFIG_ARCH_LH7A404)
108 &lh7a404_usbhost_device,
109#endif
110};
111
112extern void lpd7a400_map_io (void);
113
114static void __init lpd7a40x_init (void)
115{
116 CPLD_CONTROL |= (1<<6); /* Mask USB1 connection IRQ */
117 CPLD_CONTROL &= ~(0
118 | (1<<1) /* Disable LCD */
119 | (1<<0) /* Enable WLAN */
120 );
121
122 platform_add_devices (lpd7a40x_devs, ARRAY_SIZE (lpd7a40x_devs));
123}
124
125static void lh7a40x_ack_cpld_irq (u32 irq)
126{
127 /* CPLD doesn't have ack capability */
128}
129
130static void lh7a40x_mask_cpld_irq (u32 irq)
131{
132 switch (irq) {
133 case IRQ_LPD7A40X_ETH_INT:
134 CPLD_INTERRUPTS = CPLD_INTERRUPTS | 0x4;
135 break;
136 case IRQ_LPD7A400_TS:
137 CPLD_INTERRUPTS = CPLD_INTERRUPTS | 0x8;
138 break;
139 }
140}
141
142static void lh7a40x_unmask_cpld_irq (u32 irq)
143{
144 switch (irq) {
145 case IRQ_LPD7A40X_ETH_INT:
146 CPLD_INTERRUPTS = CPLD_INTERRUPTS & ~ 0x4;
147 break;
148 case IRQ_LPD7A400_TS:
149 CPLD_INTERRUPTS = CPLD_INTERRUPTS & ~ 0x8;
150 break;
151 }
152}
153
154static struct irqchip lpd7a40x_cpld_chip = {
155 .ack = lh7a40x_ack_cpld_irq,
156 .mask = lh7a40x_mask_cpld_irq,
157 .unmask = lh7a40x_unmask_cpld_irq,
158};
159
160static void lpd7a40x_cpld_handler (unsigned int irq, struct irqdesc *desc,
161 struct pt_regs *regs)
162{
163 unsigned int mask = CPLD_INTERRUPTS;
164
165 desc->chip->ack (irq);
166
167 if ((mask & 0x1) == 0) /* WLAN */
168 IRQ_DISPATCH (IRQ_LPD7A40X_ETH_INT);
169
170 if ((mask & 0x2) == 0) /* Touch */
171 IRQ_DISPATCH (IRQ_LPD7A400_TS);
172
173 desc->chip->unmask (irq); /* Level-triggered need this */
174}
175
176
177void __init lh7a40x_init_board_irq (void)
178{
179 int irq;
180
181 /* Rev A (v2.8): PF0, PF1, PF2, and PF3 are available IRQs.
182 PF7 supports the CPLD.
183 Rev B (v3.4): PF0, PF1, and PF2 are available IRQs.
184 PF3 supports the CPLD.
185 (Some) LPD7A404 prerelease boards report a version
186 number of 0x16, but we force an override since the
187 hardware is of the newer variety.
188 */
189
190 unsigned char cpld_version = CPLD_REVISION;
191 int pinCPLD = (cpld_version == 0x28) ? 7 : 3;
192
193#if defined CONFIG_MACH_LPD7A404
194 cpld_version = 0x34; /* Coerce LPD7A404 to RevB */
195#endif
196
197 /* First, configure user controlled GPIOF interrupts */
198
199 GPIO_PFDD &= ~0x0f; /* PF0-3 are inputs */
200 GPIO_INTTYPE1 &= ~0x0f; /* PF0-3 are level triggered */
201 GPIO_INTTYPE2 &= ~0x0f; /* PF0-3 are active low */
202 barrier ();
203 GPIO_GPIOFINTEN |= 0x0f; /* Enable PF0, PF1, PF2, and PF3 IRQs */
204
205 /* Then, configure CPLD interrupt */
206
207 CPLD_INTERRUPTS = 0x9c; /* Disable all CPLD interrupts */
208 GPIO_PFDD &= ~(1 << pinCPLD); /* Make input */
209 GPIO_INTTYPE1 |= (1 << pinCPLD); /* Edge triggered */
210 GPIO_INTTYPE2 &= ~(1 << pinCPLD); /* Active low */
211 barrier ();
212 GPIO_GPIOFINTEN |= (1 << pinCPLD); /* Enable */
213
214 /* Cascade CPLD interrupts */
215
216 for (irq = IRQ_BOARD_START;
217 irq < IRQ_BOARD_START + NR_IRQ_BOARD; ++irq) {
218 set_irq_chip (irq, &lpd7a40x_cpld_chip);
219 set_irq_handler (irq, do_edge_IRQ);
220 set_irq_flags (irq, IRQF_VALID);
221 }
222
223 set_irq_chained_handler ((cpld_version == 0x28)
224 ? IRQ_CPLD_V28
225 : IRQ_CPLD_V34,
226 lpd7a40x_cpld_handler);
227}
228
229static struct map_desc lpd7a400_io_desc[] __initdata = {
230 { IO_VIRT, IO_PHYS, IO_SIZE, MT_DEVICE },
231 /* Mapping added to work around chip select problems */
232 { IOBARRIER_VIRT, IOBARRIER_PHYS, IOBARRIER_SIZE, MT_DEVICE },
233 { CF_VIRT, CF_PHYS, CF_SIZE, MT_DEVICE },
234 /* This mapping is redundant since the smc driver performs another. */
235/* { CPLD00_VIRT, CPLD00_PHYS, CPLD00_SIZE, MT_DEVICE }, */
236 { CPLD02_VIRT, CPLD02_PHYS, CPLD02_SIZE, MT_DEVICE },
237 { CPLD06_VIRT, CPLD06_PHYS, CPLD06_SIZE, MT_DEVICE },
238 { CPLD08_VIRT, CPLD08_PHYS, CPLD08_SIZE, MT_DEVICE },
239 { CPLD0C_VIRT, CPLD0C_PHYS, CPLD0C_SIZE, MT_DEVICE },
240 { CPLD0E_VIRT, CPLD0E_PHYS, CPLD0E_SIZE, MT_DEVICE },
241 { CPLD10_VIRT, CPLD10_PHYS, CPLD10_SIZE, MT_DEVICE },
242 { CPLD12_VIRT, CPLD12_PHYS, CPLD12_SIZE, MT_DEVICE },
243 { CPLD14_VIRT, CPLD14_PHYS, CPLD14_SIZE, MT_DEVICE },
244 { CPLD16_VIRT, CPLD16_PHYS, CPLD16_SIZE, MT_DEVICE },
245 { CPLD18_VIRT, CPLD18_PHYS, CPLD18_SIZE, MT_DEVICE },
246 { CPLD1A_VIRT, CPLD1A_PHYS, CPLD1A_SIZE, MT_DEVICE },
247};
248
249void __init
250lpd7a400_map_io(void)
251{
252 iotable_init (lpd7a400_io_desc, ARRAY_SIZE (lpd7a400_io_desc));
253
254 /* Fixup (improve) Static Memory Controller settings */
255 SMC_BCR0 = 0x200039af; /* Boot Flash */
256 SMC_BCR6 = 0x1000fbe0; /* CPLD */
257 SMC_BCR7 = 0x1000b2c2; /* Compact Flash */
258}
259
260#ifdef CONFIG_MACH_LPD7A400
261
262MACHINE_START (LPD7A400, "Logic Product Development LPD7A400-10")
263 MAINTAINER ("Marc Singer")
264 BOOT_MEM (0xc0000000, 0x80000000, io_p2v (0x80000000))
265 BOOT_PARAMS (0xc0000100)
266 MAPIO (lpd7a400_map_io)
267 INITIRQ (lh7a400_init_irq)
268 .timer = &lh7a40x_timer,
269 INIT_MACHINE (lpd7a40x_init)
270MACHINE_END
271
272#endif
273
274#ifdef CONFIG_MACH_LPD7A404
275
276MACHINE_START (LPD7A404, "Logic Product Development LPD7A404-10")
277 MAINTAINER ("Marc Singer")
278 BOOT_MEM (0xc0000000, 0x80000000, io_p2v (0x80000000))
279 BOOT_PARAMS (0xc0000100)
280 MAPIO (lpd7a400_map_io)
281 INITIRQ (lh7a404_init_irq)
282 .timer = &lh7a40x_timer,
283 INIT_MACHINE (lpd7a40x_init)
284MACHINE_END
285
286#endif