Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes...
[pandora-kernel.git] / arch / arm / mach-sa1100 / simpad.c
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 }
170
171 static void simpad_power_off(void)
172 {
173         local_irq_disable(); // was cli
174         set_cs3(0x800);        /* only SD_MEDIAQ */
175
176         /* disable internal oscillator, float CS lines */
177         PCFR = (PCFR_OPDE | PCFR_FP | PCFR_FS);
178         /* enable wake-up on GPIO0 (Assabet...) */
179         PWER = GFER = GRER = 1;
180         /*
181          * set scratchpad to zero, just in case it is used as a
182          * restart address by the bootloader.
183          */
184         PSPR = 0;
185         PGSR = 0;
186         /* enter sleep mode */
187         PMCR = PMCR_SF;
188         while(1);
189
190         local_irq_enable(); /* we won't ever call it */
191
192
193 }
194
195
196 /*
197  * MediaQ Video Device
198  */
199 static struct platform_device simpad_mq200fb = {
200         .name = "simpad-mq200",
201         .id   = 0,
202 };
203
204 static struct platform_device *devices[] __initdata = {
205         &simpad_mq200fb
206 };
207
208
209
210 static int __init simpad_init(void)
211 {
212         int ret;
213
214         pm_power_off = simpad_power_off;
215
216         sa11x0_register_mtd(&simpad_flash_data, simpad_flash_resources,
217                               ARRAY_SIZE(simpad_flash_resources));
218         sa11x0_register_mcp(&simpad_mcp_data);
219
220         ret = platform_add_devices(devices, ARRAY_SIZE(devices));
221         if(ret)
222                 printk(KERN_WARNING "simpad: Unable to register mq200 framebuffer device");
223
224         return 0;
225 }
226
227 arch_initcall(simpad_init);
228
229
230 MACHINE_START(SIMPAD, "Simpad")
231         /* Maintainer: Holger Freyther */
232         .boot_params    = 0xc0000100,
233         .map_io         = simpad_map_io,
234         .init_irq       = sa1100_init_irq,
235         .timer          = &sa1100_timer,
236 MACHINE_END