f60b7a66dfa022bc66699a7e26b151cb8c1f1c58
[linux-2.6.git] / arch / arm / mach-sa1100 / badge4.c
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/platform_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         {       /* SRAM  bank 1 */
258                 .virtual        = 0xf1000000,
259                 .pfn            = __phys_to_pfn(0x08000000),
260                 .length         = 0x00100000,
261                 .type           = MT_DEVICE
262         }, {    /* SRAM  bank 2 */
263                 .virtual        = 0xf2000000,
264                 .pfn            = __phys_to_pfn(0x10000000),
265                 .length         = 0x00100000,
266                 .type           = MT_DEVICE
267         }, {    /* SA-1111      */
268                 .virtual        = 0xf4000000,
269                 .pfn            = __phys_to_pfn(0x48000000),
270                 .length         = 0x00100000,
271                 .type           = MT_DEVICE
272         }
273 };
274
275 static void
276 badge4_uart_pm(struct uart_port *port, u_int state, u_int oldstate)
277 {
278         if (!state) {
279                 Ser1SDCR0 |= SDCR0_UART;
280         }
281 }
282
283 static struct sa1100_port_fns badge4_port_fns __initdata = {
284         //.get_mctrl    = badge4_get_mctrl,
285         //.set_mctrl    = badge4_set_mctrl,
286         .pm             = badge4_uart_pm,
287 };
288
289 static void __init badge4_map_io(void)
290 {
291         sa1100_map_io();
292         iotable_init(badge4_io_desc, ARRAY_SIZE(badge4_io_desc));
293
294         sa1100_register_uart_fns(&badge4_port_fns);
295         sa1100_register_uart(0, 3);
296         sa1100_register_uart(1, 1);
297 }
298
299 MACHINE_START(BADGE4, "Hewlett-Packard Laboratories BadgePAD 4")
300         .phys_io        = 0x80000000,
301         .io_pg_offst    = ((0xf8000000) >> 18) & 0xfffc,
302         .boot_params    = 0xc0000100,
303         .map_io         = badge4_map_io,
304         .init_irq       = sa1100_init_irq,
305         .timer          = &sa1100_timer,
306 MACHINE_END