1 /*
2 * linux/arch/arm/mach-sa1100/simpad.c
3 */
4
5 #include <linux/module.h>
6 #include <linux/init.h>
7 #include <linux/kernel.h>
8 #include <linux/tty.h>
9 #include <linux/proc_fs.h>
10 #include <linux/string.h>
11 #include <linux/pm.h>
12 #include <linux/platform_device.h>
13 #include <linux/mtd/mtd.h>
14 #include <linux/mtd/partitions.h>
15 #include <linux/io.h>
16
17 #include <asm/irq.h>
18 #include <mach/hardware.h>
19 #include <asm/setup.h>
20
21 #include <asm/mach-types.h>
22 #include <asm/mach/arch.h>
23 #include <asm/mach/flash.h>
24 #include <asm/mach/map.h>
25 #include <asm/mach/serial_sa1100.h>
26 #include <mach/mcp.h>
27 #include <mach/simpad.h>
28
29 #include <linux/serial_core.h>
30 #include <linux/ioport.h>
31
32 #include "generic.h"
33
34 long cs3_shadow;
35
36 long get_cs3_shadow(void)
37 {
38 return cs3_shadow;
39 }
40
41 void set_cs3(long value)
42 {
43 *(CS3BUSTYPE *)(CS3_BASE) = cs3_shadow = value;
44 }
45
46 void set_cs3_bit(int value)
47 {
48 cs3_shadow |= value;
49 *(CS3BUSTYPE *)(CS3_BASE) = cs3_shadow;
50 }
51
52 void clear_cs3_bit(int value)
53 {
54 cs3_shadow &= ~value;
55 *(CS3BUSTYPE *)(CS3_BASE) = cs3_shadow;
56 }
57
58 EXPORT_SYMBOL(set_cs3_bit);
59 EXPORT_SYMBOL(clear_cs3_bit);
60
61 static struct map_desc simpad_io_desc[] __initdata = {
62 { /* MQ200 */
63 .virtual = 0xf2800000,
64 .pfn = __phys_to_pfn(0x4b800000),
65 .length = 0x00800000,
66 .type = MT_DEVICE
67 }, { /* Paules CS3, write only */
68 .virtual = 0xf1000000,
69 .pfn = __phys_to_pfn(0x18000000),
70 .length = 0x00100000,
71 .type = MT_DEVICE
72 },
73 };
74
75
76 static void simpad_uart_pm(struct uart_port *port, u_int state, u_int oldstate)
77 {
78 if (port->mapbase == (u_int)&Ser1UTCR0) {
79 if (state)
80 {
81 clear_cs3_bit(RS232_ON);
82 clear_cs3_bit(DECT_POWER_ON);
83 }else
84 {
85 set_cs3_bit(RS232_ON);
86 set_cs3_bit(DECT_POWER_ON);
87 }
88 }
89 }
90
91 static struct sa1100_port_fns simpad_port_fns __initdata = {
92 .pm = simpad_uart_pm,
93 };
94
95
96 static struct mtd_partition simpad_partitions[] = {
97 {
98 .name = "SIMpad boot firmware",
99 .size = 0x00080000,
100 .offset = 0,
101 .mask_flags = MTD_WRITEABLE,
102 }, {
103 .name = "SIMpad kernel",
104 .size = 0x0010000,
105 .offset = MTDPART_OFS_APPEND,
106 }, {
107 .name = "SIMpad root jffs2",
108 .size = MTDPART_SIZ_FULL,
109 .offset = MTDPART_OFS_APPEND,
110 }
111 };
112
113 static struct flash_platform_data simpad_flash_data = {
114 .map_name = "cfi_probe",
115 .parts = simpad_partitions,
116 .nr_parts = ARRAY_SIZE(simpad_partitions),
117 };
118
119
120 static struct resource simpad_flash_resources [] = {
121 {
122 .start = SA1100_CS0_PHYS,
123 .end = SA1100_CS0_PHYS + SZ_16M -1,
124 .flags = IORESOURCE_MEM,
125 }, {
126 .start = SA1100_CS1_PHYS,
127 .end = SA1100_CS1_PHYS + SZ_16M -1,
128 .flags = IORESOURCE_MEM,
129 }
130 };
131
132 static struct mcp_plat_data simpad_mcp_data = {
133 .mccr0 = MCCR0_ADM,
134 .sclk_rate = 11981000,
135 };
136
137
138
139 static void __init simpad_map_io(void)
140 {
141 sa1100_map_io();
142
143 iotable_init(simpad_io_desc, ARRAY_SIZE(simpad_io_desc));
144
145 set_cs3_bit (EN1 | EN0 | LED2_ON | DISPLAY_ON | RS232_ON |
146 ENABLE_5V | RESET_SIMCARD | DECT_POWER_ON);
147
148
149 sa1100_register_uart_fns(&simpad_port_fns);
150 sa1100_register_uart(0, 3); /* serial interface */
151 sa1100_register_uart(1, 1); /* DECT */
152
153 // Reassign UART 1 pins
154 GAFR |= GPIO_UART_TXD | GPIO_UART_RXD;
155 GPDR |= GPIO_UART_TXD | GPIO_LDD13 | GPIO_LDD15;
156 GPDR &= ~GPIO_UART_RXD;
157 PPAR |= PPAR_UPR;
158
159 /*
160 * Set up registers for sleep mode.
161 */
162
163
164 PWER = PWER_GPIO0| PWER_RTC;
165 PGSR = 0x818;
166 PCFR = 0;
167 PSDR = 0;
168
169 sa11x0_set_flash_data(&simpad_flash_data, simpad_flash_resources,
170 ARRAY_SIZE(simpad_flash_resources));
171 sa11x0_set_mcp_data(&simpad_mcp_data);
172 }
173
174 static void simpad_power_off(void)
175 {
176 local_irq_disable(); // was cli
177 set_cs3(0x800); /* only SD_MEDIAQ */
178
179 /* disable internal oscillator, float CS lines */
180 PCFR = (PCFR_OPDE | PCFR_FP | PCFR_FS);
181 /* enable wake-up on GPIO0 (Assabet...) */
182 PWER = GFER = GRER = 1;
183 /*
184 * set scratchpad to zero, just in case it is used as a
185 * restart address by the bootloader.
186 */
187 PSPR = 0;
188 PGSR = 0;
189 /* enter sleep mode */
190 PMCR = PMCR_SF;
191 while(1);
192
193 local_irq_enable(); /* we won't ever call it */
194
195
196 }
197
198
199 /*
200 * MediaQ Video Device
201 */
202 static struct platform_device simpad_mq200fb = {
203 .name = "simpad-mq200",
204 .id = 0,
205 };
206
207 static struct platform_device *devices[] __initdata = {
208 &simpad_mq200fb
209 };
210
211
212
213 static int __init simpad_init(void)
214 {
215 int ret;
216
217 pm_power_off = simpad_power_off;
218
219 ret = platform_add_devices(devices, ARRAY_SIZE(devices));
220 if(ret)
221 printk(KERN_WARNING "simpad: Unable to register mq200 framebuffer device");
222
223 return 0;
224 }
225
226 arch_initcall(simpad_init);
227
228
229 MACHINE_START(SIMPAD, "Simpad")
230 /* Maintainer: Holger Freyther */
231 .phys_io = 0x80000000,
232 .io_pg_offst = ((0xf8000000) >> 18) & 0xfffc,
233 .boot_params = 0xc0000100,
234 .map_io = simpad_map_io,
235 .init_irq = sa1100_init_irq,
236 .timer = &sa1100_timer,
237 MACHINE_END
238
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