Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
[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 <mach/hardware.h>
27 #include <asm/mach-types.h>
28 #include <asm/setup.h>
29 #include <mach/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 <mach/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 struct sa1111_platform_data sa1111_info = {
55         .irq_base       = IRQ_BOARD_END,
56 };
57
58 static u64 sa1111_dmamask = 0xffffffffUL;
59
60 static struct platform_device sa1111_device = {
61         .name           = "sa1111",
62         .id             = 0,
63         .dev            = {
64                 .dma_mask = &sa1111_dmamask,
65                 .coherent_dma_mask = 0xffffffff,
66                 .platform_data = &sa1111_info,
67         },
68         .num_resources  = ARRAY_SIZE(sa1111_resources),
69         .resource       = sa1111_resources,
70 };
71
72 static struct platform_device *devices[] __initdata = {
73         &sa1111_device,
74 };
75
76 static int __init badge4_sa1111_init(void)
77 {
78         /*
79          * Ensure that the memory bus request/grant signals are setup,
80          * and the grant is held in its inactive state
81          */
82         sa1110_mb_disable();
83
84         /*
85          * Probe for SA1111.
86          */
87         return platform_add_devices(devices, ARRAY_SIZE(devices));
88 }
89
90
91 /*
92  * 1 x Intel 28F320C3 Advanced+ Boot Block Flash (32 Mi bit)
93  *   Eight 4 KiW Parameter Bottom Blocks (64 KiB)
94  *   Sixty-three 32 KiW Main Blocks (4032 Ki b)
95  *
96  * <or>
97  *
98  * 1 x Intel 28F640C3 Advanced+ Boot Block Flash (64 Mi bit)
99  *   Eight 4 KiW Parameter Bottom Blocks (64 KiB)
100  *   One-hundred-twenty-seven 32 KiW Main Blocks (8128 Ki b)
101  */
102 static struct mtd_partition badge4_partitions[] = {
103         {
104                 .name   = "BLOB boot loader",
105                 .offset = 0,
106                 .size   = 0x0000A000
107         }, {
108                 .name   = "params",
109                 .offset = MTDPART_OFS_APPEND,
110                 .size   = 0x00006000
111         }, {
112                 .name   = "root",
113                 .offset = MTDPART_OFS_APPEND,
114                 .size   = MTDPART_SIZ_FULL
115         }
116 };
117
118 static struct flash_platform_data badge4_flash_data = {
119         .map_name       = "cfi_probe",
120         .parts          = badge4_partitions,
121         .nr_parts       = ARRAY_SIZE(badge4_partitions),
122 };
123
124 static struct resource badge4_flash_resource = {
125         .start          = SA1100_CS0_PHYS,
126         .end            = SA1100_CS0_PHYS + SZ_64M - 1,
127         .flags          = IORESOURCE_MEM,
128 };
129
130 static int five_v_on __initdata = 0;
131
132 static int __init five_v_on_setup(char *ignore)
133 {
134         five_v_on = 1;
135         return 1;
136 }
137 __setup("five_v_on", five_v_on_setup);
138
139
140 static int __init badge4_init(void)
141 {
142         int ret;
143
144         if (!machine_is_badge4())
145                 return -ENODEV;
146
147         /* LCD */
148         GPCR  = (BADGE4_GPIO_LGP2 | BADGE4_GPIO_LGP3 |
149                  BADGE4_GPIO_LGP4 | BADGE4_GPIO_LGP5 |
150                  BADGE4_GPIO_LGP6 | BADGE4_GPIO_LGP7 |
151                  BADGE4_GPIO_LGP8 | BADGE4_GPIO_LGP9 |
152                  BADGE4_GPIO_GPA_VID | BADGE4_GPIO_GPB_VID |
153                  BADGE4_GPIO_GPC_VID);
154         GPDR &= ~BADGE4_GPIO_INT_VID;
155         GPDR |= (BADGE4_GPIO_LGP2 | BADGE4_GPIO_LGP3 |
156                  BADGE4_GPIO_LGP4 | BADGE4_GPIO_LGP5 |
157                  BADGE4_GPIO_LGP6 | BADGE4_GPIO_LGP7 |
158                  BADGE4_GPIO_LGP8 | BADGE4_GPIO_LGP9 |
159                  BADGE4_GPIO_GPA_VID | BADGE4_GPIO_GPB_VID |
160                  BADGE4_GPIO_GPC_VID);
161
162         /* SDRAM SPD i2c */
163         GPCR  = (BADGE4_GPIO_SDSDA | BADGE4_GPIO_SDSCL);
164         GPDR |= (BADGE4_GPIO_SDSDA | BADGE4_GPIO_SDSCL);
165
166         /* uart */
167         GPCR  = (BADGE4_GPIO_UART_HS1 | BADGE4_GPIO_UART_HS2);
168         GPDR |= (BADGE4_GPIO_UART_HS1 | BADGE4_GPIO_UART_HS2);
169
170         /* CPLD muxsel0 input for mux/adc chip select */
171         GPCR  = BADGE4_GPIO_MUXSEL0;
172         GPDR |= BADGE4_GPIO_MUXSEL0;
173
174         /* test points: J5, J6 as inputs, J7 outputs */
175         GPDR &= ~(BADGE4_GPIO_TESTPT_J5 | BADGE4_GPIO_TESTPT_J6);
176         GPCR  = BADGE4_GPIO_TESTPT_J7;
177         GPDR |= BADGE4_GPIO_TESTPT_J7;
178
179         /* 5V supply rail. */
180         GPCR  = BADGE4_GPIO_PCMEN5V;            /* initially off */
181         GPDR |= BADGE4_GPIO_PCMEN5V;
182
183         /* CPLD sdram type inputs; set up by blob */
184         //GPDR |= (BADGE4_GPIO_SDTYP1 | BADGE4_GPIO_SDTYP0);
185         printk(KERN_DEBUG __FILE__ ": SDRAM CPLD typ1=%d typ0=%d\n",
186                 !!(GPLR & BADGE4_GPIO_SDTYP1),
187                 !!(GPLR & BADGE4_GPIO_SDTYP0));
188
189         /* SA1111 reset pin; set up by blob */
190         //GPSR  = BADGE4_GPIO_SA1111_NRST;
191         //GPDR |= BADGE4_GPIO_SA1111_NRST;
192
193
194         /* power management cruft */
195         PGSR = 0;
196         PWER = 0;
197         PCFR = 0;
198         PSDR = 0;
199
200         PWER |= PWER_GPIO26;    /* wake up on an edge from TESTPT_J5 */
201         PWER |= PWER_RTC;       /* wake up if rtc fires */
202
203         /* drive sa1111_nrst during sleep */
204         PGSR |= BADGE4_GPIO_SA1111_NRST;
205         /* drive CPLD as is during sleep */
206         PGSR |= (GPLR & (BADGE4_GPIO_SDTYP0|BADGE4_GPIO_SDTYP1));
207
208
209         /* Now bring up the SA-1111. */
210         ret = badge4_sa1111_init();
211         if (ret < 0)
212                 printk(KERN_ERR
213                         "%s: SA-1111 initialization failed (%d)\n",
214                         __func__, ret);
215
216
217         /* maybe turn on 5v0 from the start */
218         badge4_set_5V(BADGE4_5V_INITIALLY, five_v_on);
219
220         sa11x0_register_mtd(&badge4_flash_data, &badge4_flash_resource, 1);
221
222         return 0;
223 }
224
225 arch_initcall(badge4_init);
226
227
228 static unsigned badge4_5V_bitmap = 0;
229
230 void badge4_set_5V(unsigned subsystem, int on)
231 {
232         unsigned long flags;
233         unsigned old_5V_bitmap;
234
235         local_irq_save(flags);
236
237         old_5V_bitmap = badge4_5V_bitmap;
238
239         if (on) {
240                 badge4_5V_bitmap |= subsystem;
241         } else {
242                 badge4_5V_bitmap &= ~subsystem;
243         }
244
245         /* detect on->off and off->on transitions */
246         if ((!old_5V_bitmap) && (badge4_5V_bitmap)) {
247                 /* was off, now on */
248                 printk(KERN_INFO "%s: enabling 5V supply rail\n", __func__);
249                 GPSR = BADGE4_GPIO_PCMEN5V;
250         } else if ((old_5V_bitmap) && (!badge4_5V_bitmap)) {
251                 /* was on, now off */
252                 printk(KERN_INFO "%s: disabling 5V supply rail\n", __func__);
253                 GPCR = BADGE4_GPIO_PCMEN5V;
254         }
255
256         local_irq_restore(flags);
257 }
258 EXPORT_SYMBOL(badge4_set_5V);
259
260
261 static struct map_desc badge4_io_desc[] __initdata = {
262         {       /* SRAM  bank 1 */
263                 .virtual        = 0xf1000000,
264                 .pfn            = __phys_to_pfn(0x08000000),
265                 .length         = 0x00100000,
266                 .type           = MT_DEVICE
267         }, {    /* SRAM  bank 2 */
268                 .virtual        = 0xf2000000,
269                 .pfn            = __phys_to_pfn(0x10000000),
270                 .length         = 0x00100000,
271                 .type           = MT_DEVICE
272         }, {    /* SA-1111      */
273                 .virtual        = 0xf4000000,
274                 .pfn            = __phys_to_pfn(0x48000000),
275                 .length         = 0x00100000,
276                 .type           = MT_DEVICE
277         }
278 };
279
280 static void
281 badge4_uart_pm(struct uart_port *port, u_int state, u_int oldstate)
282 {
283         if (!state) {
284                 Ser1SDCR0 |= SDCR0_UART;
285         }
286 }
287
288 static struct sa1100_port_fns badge4_port_fns __initdata = {
289         //.get_mctrl    = badge4_get_mctrl,
290         //.set_mctrl    = badge4_set_mctrl,
291         .pm             = badge4_uart_pm,
292 };
293
294 static void __init badge4_map_io(void)
295 {
296         sa1100_map_io();
297         iotable_init(badge4_io_desc, ARRAY_SIZE(badge4_io_desc));
298
299         sa1100_register_uart_fns(&badge4_port_fns);
300         sa1100_register_uart(0, 3);
301         sa1100_register_uart(1, 1);
302 }
303
304 MACHINE_START(BADGE4, "Hewlett-Packard Laboratories BadgePAD 4")
305         .boot_params    = 0xc0000100,
306         .map_io         = badge4_map_io,
307         .init_irq       = sa1100_init_irq,
308         .timer          = &sa1100_timer,
309 #ifdef CONFIG_SA1111
310         .dma_zone_size  = SZ_1M,
311 #endif
312 MACHINE_END