diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/arm/mach-sa1100/badge4.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-sa1100/badge4.c')
-rw-r--r-- | arch/arm/mach-sa1100/badge4.c | 293 |
1 files changed, 293 insertions, 0 deletions
diff --git a/arch/arm/mach-sa1100/badge4.c b/arch/arm/mach-sa1100/badge4.c new file mode 100644 index 000000000000..6a60b497ab42 --- /dev/null +++ b/arch/arm/mach-sa1100/badge4.c | |||
@@ -0,0 +1,293 @@ | |||
1 | /* | ||
2 | * linux/arch/arm/mach-sa1100/badge4.c | ||
3 | * | ||
4 | * BadgePAD 4 specific initialization | ||
5 | * | ||
6 | * Tim Connors <connors@hpl.hp.com> | ||
7 | * Christopher Hoover <ch@hpl.hp.com> | ||
8 | * | ||
9 | * Copyright (C) 2002 Hewlett-Packard Company | ||
10 | * | ||
11 | * This program is free software; you can redistribute it and/or modify | ||
12 | * it under the terms of the GNU General Public License version 2 as | ||
13 | * published by the Free Software Foundation. | ||
14 | * | ||
15 | */ | ||
16 | #include <linux/module.h> | ||
17 | #include <linux/init.h> | ||
18 | #include <linux/kernel.h> | ||
19 | #include <linux/device.h> | ||
20 | #include <linux/delay.h> | ||
21 | #include <linux/tty.h> | ||
22 | #include <linux/mtd/mtd.h> | ||
23 | #include <linux/mtd/partitions.h> | ||
24 | #include <linux/errno.h> | ||
25 | |||
26 | #include <asm/hardware.h> | ||
27 | #include <asm/mach-types.h> | ||
28 | #include <asm/setup.h> | ||
29 | #include <asm/arch/irqs.h> | ||
30 | |||
31 | #include <asm/mach/arch.h> | ||
32 | #include <asm/mach/flash.h> | ||
33 | #include <asm/mach/map.h> | ||
34 | #include <asm/hardware/sa1111.h> | ||
35 | #include <asm/mach/serial_sa1100.h> | ||
36 | |||
37 | #include <asm/arch/badge4.h> | ||
38 | |||
39 | #include "generic.h" | ||
40 | |||
41 | static struct resource sa1111_resources[] = { | ||
42 | [0] = { | ||
43 | .start = BADGE4_SA1111_BASE, | ||
44 | .end = BADGE4_SA1111_BASE + 0x00001fff, | ||
45 | .flags = IORESOURCE_MEM, | ||
46 | }, | ||
47 | [1] = { | ||
48 | .start = BADGE4_IRQ_GPIO_SA1111, | ||
49 | .end = BADGE4_IRQ_GPIO_SA1111, | ||
50 | .flags = IORESOURCE_IRQ, | ||
51 | }, | ||
52 | }; | ||
53 | |||
54 | static u64 sa1111_dmamask = 0xffffffffUL; | ||
55 | |||
56 | static struct platform_device sa1111_device = { | ||
57 | .name = "sa1111", | ||
58 | .id = 0, | ||
59 | .dev = { | ||
60 | .dma_mask = &sa1111_dmamask, | ||
61 | .coherent_dma_mask = 0xffffffff, | ||
62 | }, | ||
63 | .num_resources = ARRAY_SIZE(sa1111_resources), | ||
64 | .resource = sa1111_resources, | ||
65 | }; | ||
66 | |||
67 | static struct platform_device *devices[] __initdata = { | ||
68 | &sa1111_device, | ||
69 | }; | ||
70 | |||
71 | static int __init badge4_sa1111_init(void) | ||
72 | { | ||
73 | /* | ||
74 | * Ensure that the memory bus request/grant signals are setup, | ||
75 | * and the grant is held in its inactive state | ||
76 | */ | ||
77 | sa1110_mb_disable(); | ||
78 | |||
79 | /* | ||
80 | * Probe for SA1111. | ||
81 | */ | ||
82 | return platform_add_devices(devices, ARRAY_SIZE(devices)); | ||
83 | } | ||
84 | |||
85 | |||
86 | /* | ||
87 | * 1 x Intel 28F320C3 Advanced+ Boot Block Flash (32 Mi bit) | ||
88 | * Eight 4 KiW Parameter Bottom Blocks (64 KiB) | ||
89 | * Sixty-three 32 KiW Main Blocks (4032 Ki b) | ||
90 | * | ||
91 | * <or> | ||
92 | * | ||
93 | * 1 x Intel 28F640C3 Advanced+ Boot Block Flash (64 Mi bit) | ||
94 | * Eight 4 KiW Parameter Bottom Blocks (64 KiB) | ||
95 | * One-hundred-twenty-seven 32 KiW Main Blocks (8128 Ki b) | ||
96 | */ | ||
97 | static struct mtd_partition badge4_partitions[] = { | ||
98 | { | ||
99 | .name = "BLOB boot loader", | ||
100 | .offset = 0, | ||
101 | .size = 0x0000A000 | ||
102 | }, { | ||
103 | .name = "params", | ||
104 | .offset = MTDPART_OFS_APPEND, | ||
105 | .size = 0x00006000 | ||
106 | }, { | ||
107 | .name = "root", | ||
108 | .offset = MTDPART_OFS_APPEND, | ||
109 | .size = MTDPART_SIZ_FULL | ||
110 | } | ||
111 | }; | ||
112 | |||
113 | static struct flash_platform_data badge4_flash_data = { | ||
114 | .map_name = "cfi_probe", | ||
115 | .parts = badge4_partitions, | ||
116 | .nr_parts = ARRAY_SIZE(badge4_partitions), | ||
117 | }; | ||
118 | |||
119 | static struct resource badge4_flash_resource = { | ||
120 | .start = SA1100_CS0_PHYS, | ||
121 | .end = SA1100_CS0_PHYS + SZ_64M - 1, | ||
122 | .flags = IORESOURCE_MEM, | ||
123 | }; | ||
124 | |||
125 | static int five_v_on __initdata = 0; | ||
126 | |||
127 | static int __init five_v_on_setup(char *ignore) | ||
128 | { | ||
129 | five_v_on = 1; | ||
130 | return 1; | ||
131 | } | ||
132 | __setup("five_v_on", five_v_on_setup); | ||
133 | |||
134 | |||
135 | static int __init badge4_init(void) | ||
136 | { | ||
137 | int ret; | ||
138 | |||
139 | if (!machine_is_badge4()) | ||
140 | return -ENODEV; | ||
141 | |||
142 | /* LCD */ | ||
143 | GPCR = (BADGE4_GPIO_LGP2 | BADGE4_GPIO_LGP3 | | ||
144 | BADGE4_GPIO_LGP4 | BADGE4_GPIO_LGP5 | | ||
145 | BADGE4_GPIO_LGP6 | BADGE4_GPIO_LGP7 | | ||
146 | BADGE4_GPIO_LGP8 | BADGE4_GPIO_LGP9 | | ||
147 | BADGE4_GPIO_GPA_VID | BADGE4_GPIO_GPB_VID | | ||
148 | BADGE4_GPIO_GPC_VID); | ||
149 | GPDR &= ~BADGE4_GPIO_INT_VID; | ||
150 | GPDR |= (BADGE4_GPIO_LGP2 | BADGE4_GPIO_LGP3 | | ||
151 | BADGE4_GPIO_LGP4 | BADGE4_GPIO_LGP5 | | ||
152 | BADGE4_GPIO_LGP6 | BADGE4_GPIO_LGP7 | | ||
153 | BADGE4_GPIO_LGP8 | BADGE4_GPIO_LGP9 | | ||
154 | BADGE4_GPIO_GPA_VID | BADGE4_GPIO_GPB_VID | | ||
155 | BADGE4_GPIO_GPC_VID); | ||
156 | |||
157 | /* SDRAM SPD i2c */ | ||
158 | GPCR = (BADGE4_GPIO_SDSDA | BADGE4_GPIO_SDSCL); | ||
159 | GPDR |= (BADGE4_GPIO_SDSDA | BADGE4_GPIO_SDSCL); | ||
160 | |||
161 | /* uart */ | ||
162 | GPCR = (BADGE4_GPIO_UART_HS1 | BADGE4_GPIO_UART_HS2); | ||
163 | GPDR |= (BADGE4_GPIO_UART_HS1 | BADGE4_GPIO_UART_HS2); | ||
164 | |||
165 | /* CPLD muxsel0 input for mux/adc chip select */ | ||
166 | GPCR = BADGE4_GPIO_MUXSEL0; | ||
167 | GPDR |= BADGE4_GPIO_MUXSEL0; | ||
168 | |||
169 | /* test points: J5, J6 as inputs, J7 outputs */ | ||
170 | GPDR &= ~(BADGE4_GPIO_TESTPT_J5 | BADGE4_GPIO_TESTPT_J6); | ||
171 | GPCR = BADGE4_GPIO_TESTPT_J7; | ||
172 | GPDR |= BADGE4_GPIO_TESTPT_J7; | ||
173 | |||
174 | /* 5V supply rail. */ | ||
175 | GPCR = BADGE4_GPIO_PCMEN5V; /* initially off */ | ||
176 | GPDR |= BADGE4_GPIO_PCMEN5V; | ||
177 | |||
178 | /* CPLD sdram type inputs; set up by blob */ | ||
179 | //GPDR |= (BADGE4_GPIO_SDTYP1 | BADGE4_GPIO_SDTYP0); | ||
180 | printk(KERN_DEBUG __FILE__ ": SDRAM CPLD typ1=%d typ0=%d\n", | ||
181 | !!(GPLR & BADGE4_GPIO_SDTYP1), | ||
182 | !!(GPLR & BADGE4_GPIO_SDTYP0)); | ||
183 | |||
184 | /* SA1111 reset pin; set up by blob */ | ||
185 | //GPSR = BADGE4_GPIO_SA1111_NRST; | ||
186 | //GPDR |= BADGE4_GPIO_SA1111_NRST; | ||
187 | |||
188 | |||
189 | /* power management cruft */ | ||
190 | PGSR = 0; | ||
191 | PWER = 0; | ||
192 | PCFR = 0; | ||
193 | PSDR = 0; | ||
194 | |||
195 | PWER |= PWER_GPIO26; /* wake up on an edge from TESTPT_J5 */ | ||
196 | PWER |= PWER_RTC; /* wake up if rtc fires */ | ||
197 | |||
198 | /* drive sa1111_nrst during sleep */ | ||
199 | PGSR |= BADGE4_GPIO_SA1111_NRST; | ||
200 | /* drive CPLD as is during sleep */ | ||
201 | PGSR |= (GPLR & (BADGE4_GPIO_SDTYP0|BADGE4_GPIO_SDTYP1)); | ||
202 | |||
203 | |||
204 | /* Now bring up the SA-1111. */ | ||
205 | ret = badge4_sa1111_init(); | ||
206 | if (ret < 0) | ||
207 | printk(KERN_ERR | ||
208 | "%s: SA-1111 initialization failed (%d)\n", | ||
209 | __FUNCTION__, ret); | ||
210 | |||
211 | |||
212 | /* maybe turn on 5v0 from the start */ | ||
213 | badge4_set_5V(BADGE4_5V_INITIALLY, five_v_on); | ||
214 | |||
215 | sa11x0_set_flash_data(&badge4_flash_data, &badge4_flash_resource, 1); | ||
216 | |||
217 | return 0; | ||
218 | } | ||
219 | |||
220 | arch_initcall(badge4_init); | ||
221 | |||
222 | |||
223 | static unsigned badge4_5V_bitmap = 0; | ||
224 | |||
225 | void badge4_set_5V(unsigned subsystem, int on) | ||
226 | { | ||
227 | unsigned long flags; | ||
228 | unsigned old_5V_bitmap; | ||
229 | |||
230 | local_irq_save(flags); | ||
231 | |||
232 | old_5V_bitmap = badge4_5V_bitmap; | ||
233 | |||
234 | if (on) { | ||
235 | badge4_5V_bitmap |= subsystem; | ||
236 | } else { | ||
237 | badge4_5V_bitmap &= ~subsystem; | ||
238 | } | ||
239 | |||
240 | /* detect on->off and off->on transitions */ | ||
241 | if ((!old_5V_bitmap) && (badge4_5V_bitmap)) { | ||
242 | /* was off, now on */ | ||
243 | printk(KERN_INFO "%s: enabling 5V supply rail\n", __FUNCTION__); | ||
244 | GPSR = BADGE4_GPIO_PCMEN5V; | ||
245 | } else if ((old_5V_bitmap) && (!badge4_5V_bitmap)) { | ||
246 | /* was on, now off */ | ||
247 | printk(KERN_INFO "%s: disabling 5V supply rail\n", __FUNCTION__); | ||
248 | GPCR = BADGE4_GPIO_PCMEN5V; | ||
249 | } | ||
250 | |||
251 | local_irq_restore(flags); | ||
252 | } | ||
253 | EXPORT_SYMBOL(badge4_set_5V); | ||
254 | |||
255 | |||
256 | static struct map_desc badge4_io_desc[] __initdata = { | ||
257 | /* virtual physical length type */ | ||
258 | {0xf1000000, 0x08000000, 0x00100000, MT_DEVICE },/* SRAM bank 1 */ | ||
259 | {0xf2000000, 0x10000000, 0x00100000, MT_DEVICE },/* SRAM bank 2 */ | ||
260 | {0xf4000000, 0x48000000, 0x00100000, MT_DEVICE } /* SA-1111 */ | ||
261 | }; | ||
262 | |||
263 | static void | ||
264 | badge4_uart_pm(struct uart_port *port, u_int state, u_int oldstate) | ||
265 | { | ||
266 | if (!state) { | ||
267 | Ser1SDCR0 |= SDCR0_UART; | ||
268 | } | ||
269 | } | ||
270 | |||
271 | static struct sa1100_port_fns badge4_port_fns __initdata = { | ||
272 | //.get_mctrl = badge4_get_mctrl, | ||
273 | //.set_mctrl = badge4_set_mctrl, | ||
274 | .pm = badge4_uart_pm, | ||
275 | }; | ||
276 | |||
277 | static void __init badge4_map_io(void) | ||
278 | { | ||
279 | sa1100_map_io(); | ||
280 | iotable_init(badge4_io_desc, ARRAY_SIZE(badge4_io_desc)); | ||
281 | |||
282 | sa1100_register_uart_fns(&badge4_port_fns); | ||
283 | sa1100_register_uart(0, 3); | ||
284 | sa1100_register_uart(1, 1); | ||
285 | } | ||
286 | |||
287 | MACHINE_START(BADGE4, "Hewlett-Packard Laboratories BadgePAD 4") | ||
288 | BOOT_MEM(0xc0000000, 0x80000000, 0xf8000000) | ||
289 | BOOT_PARAMS(0xc0000100) | ||
290 | MAPIO(badge4_map_io) | ||
291 | INITIRQ(sa1100_init_irq) | ||
292 | .timer = &sa1100_timer, | ||
293 | MACHINE_END | ||