Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc
[linux-2.6] / arch / mips / basler / excite / excite_device.c
1 /*
2  *  Copyright (C) 2004 by Basler Vision Technologies AG
3  *  Author: Thomas Koeller <thomas.koeller@baslerweb.com>
4  *
5  *  This program is free software; you can redistribute it and/or modify
6  *  it under the terms of the GNU General Public License as published by
7  *  the Free Software Foundation; either version 2 of the License, or
8  *  (at your option) any later version.
9  *
10  *  This program is distributed in the hope that it will be useful,
11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13  *  GNU General Public License for more details.
14  *
15  *  You should have received a copy of the GNU General Public License
16  *  along with this program; if not, write to the Free Software
17  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
18  */
19
20 #include <linux/kernel.h>
21 #include <linux/init.h>
22 #include <linux/platform_device.h>
23 #include <linux/ioport.h>
24 #include <linux/err.h>
25 #include <linux/jiffies.h>
26 #include <linux/sched.h>
27 #include <asm/types.h>
28 #include <asm/rm9k-ocd.h>
29
30 #include <excite.h>
31 #include <rm9k_eth.h>
32 #include <rm9k_wdt.h>
33 #include <rm9k_xicap.h>
34 #include <excite_nandflash.h>
35
36 #include "excite_iodev.h"
37
38 #define RM9K_GE_UNIT    0
39 #define XICAP_UNIT      0
40 #define NAND_UNIT       0
41
42 #define DLL_TIMEOUT     3               /* seconds */
43
44
45 #define RINIT(__start__, __end__, __name__, __parent__) {       \
46         .name   = __name__ "_0",                                \
47         .start  = (__start__),                                  \
48         .end    = (__end__),                                    \
49         .flags  = 0,                                            \
50         .parent = (__parent__)                                  \
51 }
52
53 #define RINIT_IRQ(__irq__, __name__) {  \
54         .name   = __name__ "_0",        \
55         .start  = (__irq__),            \
56         .end    = (__irq__),            \
57         .flags  = IORESOURCE_IRQ,       \
58         .parent = NULL                  \
59 }
60
61
62
63 enum {
64         slice_xicap,
65         slice_eth
66 };
67
68
69
70 static struct resource
71         excite_ctr_resource __maybe_unused = {
72                 .name           = "GPI counters",
73                 .start          = 0,
74                 .end            = 5,
75                 .flags          = 0,
76                 .parent         = NULL,
77                 .sibling        = NULL,
78                 .child          = NULL
79         },
80         excite_gpislice_resource __maybe_unused = {
81                 .name           = "GPI slices",
82                 .start          = 0,
83                 .end            = 1,
84                 .flags          = 0,
85                 .parent         = NULL,
86                 .sibling        = NULL,
87                 .child          = NULL
88         },
89         excite_mdio_channel_resource __maybe_unused = {
90                 .name           = "MDIO channels",
91                 .start          = 0,
92                 .end            = 1,
93                 .flags          = 0,
94                 .parent         = NULL,
95                 .sibling        = NULL,
96                 .child          = NULL
97         },
98         excite_fifomem_resource __maybe_unused = {
99                 .name           = "FIFO memory",
100                 .start          = 0,
101                 .end            = 767,
102                 .flags          = 0,
103                 .parent         = NULL,
104                 .sibling        = NULL,
105                 .child          = NULL
106         },
107         excite_scram_resource __maybe_unused = {
108                 .name           = "Scratch RAM",
109                 .start          = EXCITE_PHYS_SCRAM,
110                 .end            = EXCITE_PHYS_SCRAM + EXCITE_SIZE_SCRAM - 1,
111                 .flags          = IORESOURCE_MEM,
112                 .parent         = NULL,
113                 .sibling        = NULL,
114                 .child          = NULL
115         },
116         excite_fpga_resource __maybe_unused = {
117                 .name           = "System FPGA",
118                 .start          = EXCITE_PHYS_FPGA,
119                 .end            = EXCITE_PHYS_FPGA + EXCITE_SIZE_FPGA - 1,
120                 .flags          = IORESOURCE_MEM,
121                 .parent         = NULL,
122                 .sibling        = NULL,
123                 .child          = NULL
124         },
125         excite_nand_resource __maybe_unused = {
126                 .name           = "NAND flash control",
127                 .start          = EXCITE_PHYS_NAND,
128                 .end            = EXCITE_PHYS_NAND + EXCITE_SIZE_NAND - 1,
129                 .flags          = IORESOURCE_MEM,
130                 .parent         = NULL,
131                 .sibling        = NULL,
132                 .child          = NULL
133         },
134         excite_titan_resource __maybe_unused = {
135                 .name           = "TITAN registers",
136                 .start          = EXCITE_PHYS_TITAN,
137                 .end            = EXCITE_PHYS_TITAN + EXCITE_SIZE_TITAN - 1,
138                 .flags          = IORESOURCE_MEM,
139                 .parent         = NULL,
140                 .sibling        = NULL,
141                 .child          = NULL
142         };
143
144
145
146 static void adjust_resources(struct resource *res, unsigned int n)
147 {
148         struct resource *p;
149         const unsigned long mask = IORESOURCE_IO | IORESOURCE_MEM
150                                    | IORESOURCE_IRQ | IORESOURCE_DMA;
151
152         for (p = res; p < res + n; p++) {
153                 const struct resource * const parent = p->parent;
154                 if (parent) {
155                         p->start += parent->start;
156                         p->end   += parent->start;
157                         p->flags =  parent->flags & mask;
158                 }
159         }
160 }
161
162
163
164 #if defined(CONFIG_EXCITE_FCAP_GPI) || defined(CONFIG_EXCITE_FCAP_GPI_MODULE)
165 static struct resource xicap_rsrc[] = {
166         RINIT(0x4840, 0x486f, XICAP_RESOURCE_FIFO_RX, &excite_titan_resource),
167         RINIT(0x4940, 0x494b, XICAP_RESOURCE_FIFO_TX, &excite_titan_resource),
168         RINIT(0x5040, 0x5127, XICAP_RESOURCE_XDMA, &excite_titan_resource),
169         RINIT(0x1000, 0x112f, XICAP_RESOURCE_PKTPROC, &excite_titan_resource),
170         RINIT(0x1100, 0x110f, XICAP_RESOURCE_PKT_STREAM, &excite_fpga_resource),
171         RINIT(0x0800, 0x0bff, XICAP_RESOURCE_DMADESC, &excite_scram_resource),
172         RINIT(slice_xicap, slice_xicap, XICAP_RESOURCE_GPI_SLICE, &excite_gpislice_resource),
173         RINIT(0x0100, 0x02ff, XICAP_RESOURCE_FIFO_BLK, &excite_fifomem_resource),
174         RINIT_IRQ(TITAN_IRQ,  XICAP_RESOURCE_IRQ)
175 };
176
177 static struct platform_device xicap_pdev = {
178         .name           = XICAP_NAME,
179         .id             = XICAP_UNIT,
180         .num_resources  = ARRAY_SIZE(xicap_rsrc),
181         .resource       = xicap_rsrc
182 };
183
184 /*
185  * Create a platform device for the GPI port that receives the
186  * image data from the embedded camera.
187  */
188 static int __init xicap_devinit(void)
189 {
190         unsigned long tend;
191         u32 reg;
192         int retval;
193
194         adjust_resources(xicap_rsrc, ARRAY_SIZE(xicap_rsrc));
195
196         /* Power up the slice and configure it. */
197         reg = titan_readl(CPTC1R);
198         reg &= ~(0x11100 << slice_xicap);
199         titan_writel(reg, CPTC1R);
200
201         /* Enable slice & DLL. */
202         reg= titan_readl(CPRR);
203         reg &= ~(0x00030003 << (slice_xicap * 2));
204         titan_writel(reg, CPRR);
205
206         /* Wait for DLLs to lock */
207         tend = jiffies + DLL_TIMEOUT * HZ;
208         while (time_before(jiffies, tend)) {
209                 if (!(~titan_readl(CPDSR) & (0x1 << (slice_xicap * 4))))
210                         break;
211                 yield();
212         }
213
214         if (~titan_readl(CPDSR) & (0x1 << (slice_xicap * 4))) {
215                 printk(KERN_ERR "%s: DLL not locked after %u seconds\n",
216                        xicap_pdev.name, DLL_TIMEOUT);
217                 retval = -ETIME;
218         } else {
219                 /* Register platform device */
220                 retval = platform_device_register(&xicap_pdev);
221         }
222
223         return retval;
224 }
225
226 device_initcall(xicap_devinit);
227 #endif /* defined(CONFIG_EXCITE_FCAP_GPI) || defined(CONFIG_EXCITE_FCAP_GPI_MODULE) */
228
229
230
231 #if defined(CONFIG_WDT_RM9K_GPI) || defined(CONFIG_WDT_RM9K_GPI_MODULE)
232 static struct resource wdt_rsrc[] = {
233         RINIT(0, 0, WDT_RESOURCE_COUNTER, &excite_ctr_resource),
234         RINIT(0x0084, 0x008f, WDT_RESOURCE_REGS, &excite_titan_resource),
235         RINIT_IRQ(TITAN_IRQ,  WDT_RESOURCE_IRQ)
236 };
237
238 static struct platform_device wdt_pdev = {
239         .name           = WDT_NAME,
240         .id             = -1,
241         .num_resources  = ARRAY_SIZE(wdt_rsrc),
242         .resource       = wdt_rsrc
243 };
244
245 /*
246  * Create a platform device for the GPI port that receives the
247  * image data from the embedded camera.
248  */
249 static int __init wdt_devinit(void)
250 {
251         adjust_resources(wdt_rsrc, ARRAY_SIZE(wdt_rsrc));
252         return platform_device_register(&wdt_pdev);
253 }
254
255 device_initcall(wdt_devinit);
256 #endif /* defined(CONFIG_WDT_RM9K_GPI) || defined(CONFIG_WDT_RM9K_GPI_MODULE) */
257
258
259
260 static struct resource excite_nandflash_rsrc[] = {
261         RINIT(0x2000, 0x201f, EXCITE_NANDFLASH_RESOURCE_REGS,  &excite_nand_resource)
262 };
263
264 static struct platform_device excite_nandflash_pdev = {
265         .name           = "excite_nand",
266         .id             = NAND_UNIT,
267         .num_resources  = ARRAY_SIZE(excite_nandflash_rsrc),
268         .resource       = excite_nandflash_rsrc
269 };
270
271 /*
272  * Create a platform device for the access to the nand-flash
273  * port
274  */
275 static int __init excite_nandflash_devinit(void)
276 {
277         adjust_resources(excite_nandflash_rsrc, ARRAY_SIZE(excite_nandflash_rsrc));
278
279         /* nothing to be done here */
280
281         /* Register platform device */
282         return platform_device_register(&excite_nandflash_pdev);
283 }
284
285 device_initcall(excite_nandflash_devinit);
286
287
288
289 static struct resource iodev_rsrc[] = {
290         RINIT_IRQ(FPGA1_IRQ,  IODEV_RESOURCE_IRQ)
291 };
292
293 static struct platform_device io_pdev = {
294         .name           = IODEV_NAME,
295         .id             = -1,
296         .num_resources  = ARRAY_SIZE(iodev_rsrc),
297         .resource       = iodev_rsrc
298 };
299
300 /*
301  * Create a platform device for the external I/O ports.
302  */
303 static int __init io_devinit(void)
304 {
305         adjust_resources(iodev_rsrc, ARRAY_SIZE(iodev_rsrc));
306         return platform_device_register(&io_pdev);
307 }
308
309 device_initcall(io_devinit);
310
311
312
313
314 #if defined(CONFIG_RM9K_GE) || defined(CONFIG_RM9K_GE_MODULE)
315 static struct resource rm9k_ge_rsrc[] = {
316         RINIT(0x2200, 0x27ff, RM9K_GE_RESOURCE_MAC, &excite_titan_resource),
317         RINIT(0x1800, 0x1fff, RM9K_GE_RESOURCE_MSTAT, &excite_titan_resource),
318         RINIT(0x2000, 0x212f, RM9K_GE_RESOURCE_PKTPROC, &excite_titan_resource),
319         RINIT(0x5140, 0x5227, RM9K_GE_RESOURCE_XDMA, &excite_titan_resource),
320         RINIT(0x4870, 0x489f, RM9K_GE_RESOURCE_FIFO_RX, &excite_titan_resource),
321         RINIT(0x494c, 0x4957, RM9K_GE_RESOURCE_FIFO_TX, &excite_titan_resource),
322         RINIT(0x0000, 0x007f, RM9K_GE_RESOURCE_FIFOMEM_RX, &excite_fifomem_resource),
323         RINIT(0x0080, 0x00ff, RM9K_GE_RESOURCE_FIFOMEM_TX, &excite_fifomem_resource),
324         RINIT(0x0180, 0x019f, RM9K_GE_RESOURCE_PHY, &excite_titan_resource),
325         RINIT(0x0000, 0x03ff, RM9K_GE_RESOURCE_DMADESC_RX, &excite_scram_resource),
326         RINIT(0x0400, 0x07ff, RM9K_GE_RESOURCE_DMADESC_TX, &excite_scram_resource),
327         RINIT(slice_eth, slice_eth, RM9K_GE_RESOURCE_GPI_SLICE, &excite_gpislice_resource),
328         RINIT(0, 0, RM9K_GE_RESOURCE_MDIO_CHANNEL, &excite_mdio_channel_resource),
329         RINIT_IRQ(TITAN_IRQ,  RM9K_GE_RESOURCE_IRQ_MAIN),
330         RINIT_IRQ(PHY_IRQ, RM9K_GE_RESOURCE_IRQ_PHY)
331 };
332
333 static struct platform_device rm9k_ge_pdev = {
334         .name           = RM9K_GE_NAME,
335         .id             = RM9K_GE_UNIT,
336         .num_resources  = ARRAY_SIZE(rm9k_ge_rsrc),
337         .resource       = rm9k_ge_rsrc
338 };
339
340
341
342 /*
343  * Create a platform device for the Ethernet port.
344  */
345 static int __init rm9k_ge_devinit(void)
346 {
347         u32 reg;
348
349         adjust_resources(rm9k_ge_rsrc, ARRAY_SIZE(rm9k_ge_rsrc));
350
351         /* Power up the slice and configure it. */
352         reg = titan_readl(CPTC1R);
353         reg &= ~(0x11000 << slice_eth);
354         reg |= 0x100 << slice_eth;
355         titan_writel(reg, CPTC1R);
356
357         /* Take the MAC out of reset, reset the DLLs. */
358         reg = titan_readl(CPRR);
359         reg &= ~(0x00030000 << (slice_eth * 2));
360         reg |= 0x3 << (slice_eth * 2);
361         titan_writel(reg, CPRR);
362
363         return platform_device_register(&rm9k_ge_pdev);
364 }
365
366 device_initcall(rm9k_ge_devinit);
367 #endif /* defined(CONFIG_RM9K_GE) || defined(CONFIG_RM9K_GE_MODULE) */
368
369
370
371 static int __init excite_setup_devs(void)
372 {
373         int res;
374         u32 reg;
375
376         /* Enable xdma and fifo interrupts */
377         reg = titan_readl(0x0050);
378         titan_writel(reg | 0x18000000, 0x0050);
379
380         res = request_resource(&iomem_resource, &excite_titan_resource);
381         if (res)
382                 return res;
383         res = request_resource(&iomem_resource, &excite_scram_resource);
384         if (res)
385                 return res;
386         res = request_resource(&iomem_resource, &excite_fpga_resource);
387         if (res)
388                 return res;
389         res = request_resource(&iomem_resource, &excite_nand_resource);
390         if (res)
391                 return res;
392         excite_fpga_resource.flags = excite_fpga_resource.parent->flags &
393                                    ( IORESOURCE_IO | IORESOURCE_MEM
394                                    | IORESOURCE_IRQ | IORESOURCE_DMA);
395         excite_nand_resource.flags = excite_nand_resource.parent->flags &
396                                    ( IORESOURCE_IO | IORESOURCE_MEM
397                                    | IORESOURCE_IRQ | IORESOURCE_DMA);
398
399         return 0;
400 }
401
402 arch_initcall(excite_setup_devs);
403