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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_register_mtd(&simpad_flash_data, simpad_flash_resources, |
170 | ARRAY_SIZE(simpad_flash_resources)); |
171 | sa11x0_register_mcp(&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 | .boot_params = 0xc0000100, |
232 | .map_io = simpad_map_io, |
233 | .init_irq = sa1100_init_irq, |
234 | .timer = &sa1100_timer, |
235 | MACHINE_END |
236 |
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