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] = DEFINE_RES_MEM(BADGE4_SA1111_BASE, 0x2000),
43 [1] = DEFINE_RES_IRQ(BADGE4_IRQ_GPIO_SA1111),
44 };
45
badge4_sa1111_enable(void * data,unsigned devid)46 static int badge4_sa1111_enable(void *data, unsigned devid)
47 {
48 if (devid == SA1111_DEVID_USB)
49 badge4_set_5V(BADGE4_5V_USB, 1);
50 return 0;
51 }
52
badge4_sa1111_disable(void * data,unsigned devid)53 static void badge4_sa1111_disable(void *data, unsigned devid)
54 {
55 if (devid == SA1111_DEVID_USB)
56 badge4_set_5V(BADGE4_5V_USB, 0);
57 }
58
59 static struct sa1111_platform_data sa1111_info = {
60 .disable_devs = SA1111_DEVID_PS2_MSE,
61 .enable = badge4_sa1111_enable,
62 .disable = badge4_sa1111_disable,
63 };
64
65 static u64 sa1111_dmamask = 0xffffffffUL;
66
67 static struct platform_device sa1111_device = {
68 .name = "sa1111",
69 .id = 0,
70 .dev = {
71 .dma_mask = &sa1111_dmamask,
72 .coherent_dma_mask = 0xffffffff,
73 .platform_data = &sa1111_info,
74 },
75 .num_resources = ARRAY_SIZE(sa1111_resources),
76 .resource = sa1111_resources,
77 };
78
79 static struct platform_device *devices[] __initdata = {
80 &sa1111_device,
81 };
82
badge4_sa1111_init(void)83 static int __init badge4_sa1111_init(void)
84 {
85 /*
86 * Ensure that the memory bus request/grant signals are setup,
87 * and the grant is held in its inactive state
88 */
89 sa1110_mb_disable();
90
91 /*
92 * Probe for SA1111.
93 */
94 return platform_add_devices(devices, ARRAY_SIZE(devices));
95 }
96
97
98 /*
99 * 1 x Intel 28F320C3 Advanced+ Boot Block Flash (32 Mi bit)
100 * Eight 4 KiW Parameter Bottom Blocks (64 KiB)
101 * Sixty-three 32 KiW Main Blocks (4032 Ki b)
102 *
103 * <or>
104 *
105 * 1 x Intel 28F640C3 Advanced+ Boot Block Flash (64 Mi bit)
106 * Eight 4 KiW Parameter Bottom Blocks (64 KiB)
107 * One-hundred-twenty-seven 32 KiW Main Blocks (8128 Ki b)
108 */
109 static struct mtd_partition badge4_partitions[] = {
110 {
111 .name = "BLOB boot loader",
112 .offset = 0,
113 .size = 0x0000A000
114 }, {
115 .name = "params",
116 .offset = MTDPART_OFS_APPEND,
117 .size = 0x00006000
118 }, {
119 .name = "root",
120 .offset = MTDPART_OFS_APPEND,
121 .size = MTDPART_SIZ_FULL
122 }
123 };
124
125 static struct flash_platform_data badge4_flash_data = {
126 .map_name = "cfi_probe",
127 .parts = badge4_partitions,
128 .nr_parts = ARRAY_SIZE(badge4_partitions),
129 };
130
131 static struct resource badge4_flash_resource =
132 DEFINE_RES_MEM(SA1100_CS0_PHYS, SZ_64M);
133
134 static int five_v_on __initdata = 0;
135
five_v_on_setup(char * ignore)136 static int __init five_v_on_setup(char *ignore)
137 {
138 five_v_on = 1;
139 return 1;
140 }
141 __setup("five_v_on", five_v_on_setup);
142
143
badge4_init(void)144 static int __init badge4_init(void)
145 {
146 int ret;
147
148 if (!machine_is_badge4())
149 return -ENODEV;
150
151 /* LCD */
152 GPCR = (BADGE4_GPIO_LGP2 | BADGE4_GPIO_LGP3 |
153 BADGE4_GPIO_LGP4 | BADGE4_GPIO_LGP5 |
154 BADGE4_GPIO_LGP6 | BADGE4_GPIO_LGP7 |
155 BADGE4_GPIO_LGP8 | BADGE4_GPIO_LGP9 |
156 BADGE4_GPIO_GPA_VID | BADGE4_GPIO_GPB_VID |
157 BADGE4_GPIO_GPC_VID);
158 GPDR &= ~BADGE4_GPIO_INT_VID;
159 GPDR |= (BADGE4_GPIO_LGP2 | BADGE4_GPIO_LGP3 |
160 BADGE4_GPIO_LGP4 | BADGE4_GPIO_LGP5 |
161 BADGE4_GPIO_LGP6 | BADGE4_GPIO_LGP7 |
162 BADGE4_GPIO_LGP8 | BADGE4_GPIO_LGP9 |
163 BADGE4_GPIO_GPA_VID | BADGE4_GPIO_GPB_VID |
164 BADGE4_GPIO_GPC_VID);
165
166 /* SDRAM SPD i2c */
167 GPCR = (BADGE4_GPIO_SDSDA | BADGE4_GPIO_SDSCL);
168 GPDR |= (BADGE4_GPIO_SDSDA | BADGE4_GPIO_SDSCL);
169
170 /* uart */
171 GPCR = (BADGE4_GPIO_UART_HS1 | BADGE4_GPIO_UART_HS2);
172 GPDR |= (BADGE4_GPIO_UART_HS1 | BADGE4_GPIO_UART_HS2);
173
174 /* CPLD muxsel0 input for mux/adc chip select */
175 GPCR = BADGE4_GPIO_MUXSEL0;
176 GPDR |= BADGE4_GPIO_MUXSEL0;
177
178 /* test points: J5, J6 as inputs, J7 outputs */
179 GPDR &= ~(BADGE4_GPIO_TESTPT_J5 | BADGE4_GPIO_TESTPT_J6);
180 GPCR = BADGE4_GPIO_TESTPT_J7;
181 GPDR |= BADGE4_GPIO_TESTPT_J7;
182
183 /* 5V supply rail. */
184 GPCR = BADGE4_GPIO_PCMEN5V; /* initially off */
185 GPDR |= BADGE4_GPIO_PCMEN5V;
186
187 /* CPLD sdram type inputs; set up by blob */
188 //GPDR |= (BADGE4_GPIO_SDTYP1 | BADGE4_GPIO_SDTYP0);
189 printk(KERN_DEBUG __FILE__ ": SDRAM CPLD typ1=%d typ0=%d\n",
190 !!(GPLR & BADGE4_GPIO_SDTYP1),
191 !!(GPLR & BADGE4_GPIO_SDTYP0));
192
193 /* SA1111 reset pin; set up by blob */
194 //GPSR = BADGE4_GPIO_SA1111_NRST;
195 //GPDR |= BADGE4_GPIO_SA1111_NRST;
196
197
198 /* power management cruft */
199 PGSR = 0;
200 PWER = 0;
201 PCFR = 0;
202 PSDR = 0;
203
204 PWER |= PWER_GPIO26; /* wake up on an edge from TESTPT_J5 */
205 PWER |= PWER_RTC; /* wake up if rtc fires */
206
207 /* drive sa1111_nrst during sleep */
208 PGSR |= BADGE4_GPIO_SA1111_NRST;
209 /* drive CPLD as is during sleep */
210 PGSR |= (GPLR & (BADGE4_GPIO_SDTYP0|BADGE4_GPIO_SDTYP1));
211
212
213 /* Now bring up the SA-1111. */
214 ret = badge4_sa1111_init();
215 if (ret < 0)
216 printk(KERN_ERR
217 "%s: SA-1111 initialization failed (%d)\n",
218 __func__, ret);
219
220
221 /* maybe turn on 5v0 from the start */
222 badge4_set_5V(BADGE4_5V_INITIALLY, five_v_on);
223
224 sa11x0_register_mtd(&badge4_flash_data, &badge4_flash_resource, 1);
225
226 return 0;
227 }
228
229 arch_initcall(badge4_init);
230
231
232 static unsigned badge4_5V_bitmap = 0;
233
badge4_set_5V(unsigned subsystem,int on)234 void badge4_set_5V(unsigned subsystem, int on)
235 {
236 unsigned long flags;
237 unsigned old_5V_bitmap;
238
239 local_irq_save(flags);
240
241 old_5V_bitmap = badge4_5V_bitmap;
242
243 if (on) {
244 badge4_5V_bitmap |= subsystem;
245 } else {
246 badge4_5V_bitmap &= ~subsystem;
247 }
248
249 /* detect on->off and off->on transitions */
250 if ((!old_5V_bitmap) && (badge4_5V_bitmap)) {
251 /* was off, now on */
252 printk(KERN_INFO "%s: enabling 5V supply rail\n", __func__);
253 GPSR = BADGE4_GPIO_PCMEN5V;
254 } else if ((old_5V_bitmap) && (!badge4_5V_bitmap)) {
255 /* was on, now off */
256 printk(KERN_INFO "%s: disabling 5V supply rail\n", __func__);
257 GPCR = BADGE4_GPIO_PCMEN5V;
258 }
259
260 local_irq_restore(flags);
261 }
262 EXPORT_SYMBOL(badge4_set_5V);
263
264
265 static struct map_desc badge4_io_desc[] __initdata = {
266 { /* SRAM bank 1 */
267 .virtual = 0xf1000000,
268 .pfn = __phys_to_pfn(0x08000000),
269 .length = 0x00100000,
270 .type = MT_DEVICE
271 }, { /* SRAM bank 2 */
272 .virtual = 0xf2000000,
273 .pfn = __phys_to_pfn(0x10000000),
274 .length = 0x00100000,
275 .type = MT_DEVICE
276 }
277 };
278
279 static void
badge4_uart_pm(struct uart_port * port,u_int state,u_int oldstate)280 badge4_uart_pm(struct uart_port *port, u_int state, u_int oldstate)
281 {
282 if (!state) {
283 Ser1SDCR0 |= SDCR0_UART;
284 }
285 }
286
287 static struct sa1100_port_fns badge4_port_fns __initdata = {
288 //.get_mctrl = badge4_get_mctrl,
289 //.set_mctrl = badge4_set_mctrl,
290 .pm = badge4_uart_pm,
291 };
292
badge4_map_io(void)293 static void __init badge4_map_io(void)
294 {
295 sa1100_map_io();
296 iotable_init(badge4_io_desc, ARRAY_SIZE(badge4_io_desc));
297
298 sa1100_register_uart_fns(&badge4_port_fns);
299 sa1100_register_uart(0, 3);
300 sa1100_register_uart(1, 1);
301 }
302
303 MACHINE_START(BADGE4, "Hewlett-Packard Laboratories BadgePAD 4")
304 .atag_offset = 0x100,
305 .map_io = badge4_map_io,
306 .nr_irqs = SA1100_NR_IRQS,
307 .init_irq = sa1100_init_irq,
308 .timer = &sa1100_timer,
309 #ifdef CONFIG_SA1111
310 .dma_zone_size = SZ_1M,
311 #endif
312 .restart = sa11x0_restart,
313 MACHINE_END
314