1
2
3
4
5#include <linux/kernel.h>
6#include <linux/init.h>
7#include <linux/tty.h>
8#include <linux/ioport.h>
9#include <linux/serial_core.h>
10#include <linux/platform_device.h>
11#include <linux/slab.h>
12
13#include <mach/hardware.h>
14#include <asm/mach-types.h>
15#include <asm/irq.h>
16#include <asm/mach/map.h>
17#include <asm/mach/irq.h>
18#include <asm/mach/serial_sa1100.h>
19#include <mach/assabet.h>
20#include <mach/neponset.h>
21#include <asm/hardware/sa1111.h>
22#include <asm/sizes.h>
23
24
25
26
27
28
29
30static void
31neponset_irq_handler(unsigned int irq, struct irq_desc *desc)
32{
33 unsigned int irr;
34
35 while (1) {
36
37
38
39 desc->chip->ack(irq);
40
41
42
43
44
45
46 irr = IRR ^ (IRR_ETHERNET | IRR_USAR);
47
48 if ((irr & (IRR_ETHERNET | IRR_USAR | IRR_SA1111)) == 0)
49 break;
50
51
52
53
54
55
56 if (irr & (IRR_ETHERNET | IRR_USAR)) {
57 desc->chip->mask(irq);
58
59
60
61
62
63
64
65 desc->chip->ack(irq);
66
67 if (irr & IRR_ETHERNET) {
68 generic_handle_irq(IRQ_NEPONSET_SMC9196);
69 }
70
71 if (irr & IRR_USAR) {
72 generic_handle_irq(IRQ_NEPONSET_USAR);
73 }
74
75 desc->chip->unmask(irq);
76 }
77
78 if (irr & IRR_SA1111) {
79 generic_handle_irq(IRQ_NEPONSET_SA1111);
80 }
81 }
82}
83
84static void neponset_set_mctrl(struct uart_port *port, u_int mctrl)
85{
86 u_int mdm_ctl0 = MDM_CTL_0;
87
88 if (port->mapbase == _Ser1UTCR0) {
89 if (mctrl & TIOCM_RTS)
90 mdm_ctl0 &= ~MDM_CTL0_RTS2;
91 else
92 mdm_ctl0 |= MDM_CTL0_RTS2;
93
94 if (mctrl & TIOCM_DTR)
95 mdm_ctl0 &= ~MDM_CTL0_DTR2;
96 else
97 mdm_ctl0 |= MDM_CTL0_DTR2;
98 } else if (port->mapbase == _Ser3UTCR0) {
99 if (mctrl & TIOCM_RTS)
100 mdm_ctl0 &= ~MDM_CTL0_RTS1;
101 else
102 mdm_ctl0 |= MDM_CTL0_RTS1;
103
104 if (mctrl & TIOCM_DTR)
105 mdm_ctl0 &= ~MDM_CTL0_DTR1;
106 else
107 mdm_ctl0 |= MDM_CTL0_DTR1;
108 }
109
110 MDM_CTL_0 = mdm_ctl0;
111}
112
113static u_int neponset_get_mctrl(struct uart_port *port)
114{
115 u_int ret = TIOCM_CD | TIOCM_CTS | TIOCM_DSR;
116 u_int mdm_ctl1 = MDM_CTL_1;
117
118 if (port->mapbase == _Ser1UTCR0) {
119 if (mdm_ctl1 & MDM_CTL1_DCD2)
120 ret &= ~TIOCM_CD;
121 if (mdm_ctl1 & MDM_CTL1_CTS2)
122 ret &= ~TIOCM_CTS;
123 if (mdm_ctl1 & MDM_CTL1_DSR2)
124 ret &= ~TIOCM_DSR;
125 } else if (port->mapbase == _Ser3UTCR0) {
126 if (mdm_ctl1 & MDM_CTL1_DCD1)
127 ret &= ~TIOCM_CD;
128 if (mdm_ctl1 & MDM_CTL1_CTS1)
129 ret &= ~TIOCM_CTS;
130 if (mdm_ctl1 & MDM_CTL1_DSR1)
131 ret &= ~TIOCM_DSR;
132 }
133
134 return ret;
135}
136
137static struct sa1100_port_fns neponset_port_fns __devinitdata = {
138 .set_mctrl = neponset_set_mctrl,
139 .get_mctrl = neponset_get_mctrl,
140};
141
142static int __devinit neponset_probe(struct platform_device *dev)
143{
144 sa1100_register_uart_fns(&neponset_port_fns);
145
146
147
148
149 set_irq_type(IRQ_GPIO25, IRQ_TYPE_EDGE_RISING);
150 set_irq_chained_handler(IRQ_GPIO25, neponset_irq_handler);
151
152
153
154
155
156
157#if 0
158 enable_irq_wake(IRQ_GPIO25);
159#endif
160
161
162
163
164
165 set_irq_handler(IRQ_NEPONSET_SMC9196, handle_simple_irq);
166 set_irq_flags(IRQ_NEPONSET_SMC9196, IRQF_VALID | IRQF_PROBE);
167 set_irq_handler(IRQ_NEPONSET_USAR, handle_simple_irq);
168 set_irq_flags(IRQ_NEPONSET_USAR, IRQF_VALID | IRQF_PROBE);
169
170
171
172
173 NCR_0 = NCR_GP01_OFF;
174
175 return 0;
176}
177
178#ifdef CONFIG_PM
179
180
181
182
183static unsigned int neponset_saved_state;
184
185static int neponset_suspend(struct platform_device *dev, pm_message_t state)
186{
187
188
189
190 neponset_saved_state = NCR_0;
191
192 return 0;
193}
194
195static int neponset_resume(struct platform_device *dev)
196{
197 NCR_0 = neponset_saved_state;
198
199 return 0;
200}
201
202#else
203#define neponset_suspend NULL
204#define neponset_resume NULL
205#endif
206
207static struct platform_driver neponset_device_driver = {
208 .probe = neponset_probe,
209 .suspend = neponset_suspend,
210 .resume = neponset_resume,
211 .driver = {
212 .name = "neponset",
213 },
214};
215
216static struct resource neponset_resources[] = {
217 [0] = {
218 .start = 0x10000000,
219 .end = 0x17ffffff,
220 .flags = IORESOURCE_MEM,
221 },
222};
223
224static struct platform_device neponset_device = {
225 .name = "neponset",
226 .id = 0,
227 .num_resources = ARRAY_SIZE(neponset_resources),
228 .resource = neponset_resources,
229};
230
231static struct resource sa1111_resources[] = {
232 [0] = {
233 .start = 0x40000000,
234 .end = 0x40001fff,
235 .flags = IORESOURCE_MEM,
236 },
237 [1] = {
238 .start = IRQ_NEPONSET_SA1111,
239 .end = IRQ_NEPONSET_SA1111,
240 .flags = IORESOURCE_IRQ,
241 },
242};
243
244static u64 sa1111_dmamask = 0xffffffffUL;
245
246static struct platform_device sa1111_device = {
247 .name = "sa1111",
248 .id = 0,
249 .dev = {
250 .dma_mask = &sa1111_dmamask,
251 .coherent_dma_mask = 0xffffffff,
252 },
253 .num_resources = ARRAY_SIZE(sa1111_resources),
254 .resource = sa1111_resources,
255};
256
257static struct resource smc91x_resources[] = {
258 [0] = {
259 .name = "smc91x-regs",
260 .start = SA1100_CS3_PHYS,
261 .end = SA1100_CS3_PHYS + 0x01ffffff,
262 .flags = IORESOURCE_MEM,
263 },
264 [1] = {
265 .start = IRQ_NEPONSET_SMC9196,
266 .end = IRQ_NEPONSET_SMC9196,
267 .flags = IORESOURCE_IRQ,
268 },
269 [2] = {
270 .name = "smc91x-attrib",
271 .start = SA1100_CS3_PHYS + 0x02000000,
272 .end = SA1100_CS3_PHYS + 0x03ffffff,
273 .flags = IORESOURCE_MEM,
274 },
275};
276
277static struct platform_device smc91x_device = {
278 .name = "smc91x",
279 .id = 0,
280 .num_resources = ARRAY_SIZE(smc91x_resources),
281 .resource = smc91x_resources,
282};
283
284static struct platform_device *devices[] __initdata = {
285 &neponset_device,
286 &sa1111_device,
287 &smc91x_device,
288};
289
290extern void sa1110_mb_disable(void);
291
292static int __init neponset_init(void)
293{
294 platform_driver_register(&neponset_device_driver);
295
296
297
298
299 if (!machine_is_assabet())
300 return -ENODEV;
301
302
303
304
305
306
307 sa1110_mb_disable();
308
309 if (!machine_has_neponset()) {
310 printk(KERN_DEBUG "Neponset expansion board not present\n");
311 return -ENODEV;
312 }
313
314 if (WHOAMI != 0x11) {
315 printk(KERN_WARNING "Neponset board detected, but "
316 "wrong ID: %02x\n", WHOAMI);
317 return -ENODEV;
318 }
319
320 return platform_add_devices(devices, ARRAY_SIZE(devices));
321}
322
323subsys_initcall(neponset_init);
324
325static struct map_desc neponset_io_desc[] __initdata = {
326 {
327 .virtual = 0xf3000000,
328 .pfn = __phys_to_pfn(0x10000000),
329 .length = SZ_1M,
330 .type = MT_DEVICE
331 }, {
332 .virtual = 0xf4000000,
333 .pfn = __phys_to_pfn(0x40000000),
334 .length = SZ_1M,
335 .type = MT_DEVICE
336 }
337};
338
339void __init neponset_map_io(void)
340{
341 iotable_init(neponset_io_desc, ARRAY_SIZE(neponset_io_desc));
342}
343