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authorYoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>2006-09-29 05:27:07 -0400
committerRalf Baechle <ralf@linux-mips.org>2006-10-01 18:16:59 -0400
commitb00f3774f2e073d399ffbd0475337466938e9273 (patch)
tree4919b5422f979dd1e296b61a38d2173842602908 /arch/mips/basler/excite
parentaa400804e0181d9c451b3b4ddba25f0a088e8c13 (diff)
[MIPS] Remove excite_flash.c
excite_flashtest.c is unused. Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/basler/excite')
-rw-r--r--arch/mips/basler/excite/excite_flashtest.c294
1 files changed, 0 insertions, 294 deletions
diff --git a/arch/mips/basler/excite/excite_flashtest.c b/arch/mips/basler/excite/excite_flashtest.c
deleted file mode 100644
index f0024a8e3294..000000000000
--- a/arch/mips/basler/excite/excite_flashtest.c
+++ /dev/null
@@ -1,294 +0,0 @@
1/*
2* Copyright (C) 2005 by Basler Vision Technologies AG
3* Author: Thies Moeller <thies.moeller@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/module.h>
21#include <linux/types.h>
22#include <linux/init.h>
23#include <linux/kernel.h>
24#include <linux/string.h>
25#include <linux/ioport.h>
26#include <linux/device.h>
27#include <linux/delay.h>
28#include <linux/err.h>
29#include <linux/kernel.h>
30
31#include <excite.h>
32
33#include <asm/io.h>
34
35#include <linux/mtd/mtd.h>
36#include <linux/mtd/nand.h>
37#include <linux/mtd/nand_ecc.h>
38#include <linux/mtd/partitions.h>
39#include <asm/rm9k-ocd.h> // for ocd_write
40#include <linux/workqueue.h> // for queue
41
42#include "excite_nandflash.h"
43#include "nandflash.h"
44
45#define PFX "excite flashtest: "
46typedef void __iomem *io_reg_t;
47
48#define io_readb(__a__) __raw_readb((__a__))
49#define io_writeb(__v__, __a__) __raw_writeb((__v__), (__a__))
50
51
52
53static inline const struct resource *excite_nandflash_get_resource(
54 struct platform_device *d, unsigned long flags, const char *basename)
55{
56 const char fmt[] = "%s_%u";
57 char buf[80];
58
59 if (unlikely(snprintf(buf, sizeof buf, fmt, basename, d->id) >= sizeof buf))
60 return NULL;
61
62 return platform_get_resource_byname(d, flags, buf);
63}
64
65static inline io_reg_t
66excite_nandflash_map_regs(struct platform_device *d, const char *basename)
67{
68 void *result = NULL;
69 const struct resource *const r =
70 excite_nandflash_get_resource(d, IORESOURCE_MEM, basename);
71 if (r)
72 result = ioremap_nocache(r->start, r->end + 1 - r->start);
73 return result;
74}
75
76/* controller and mtd information */
77
78struct excite_nandflash_drvdata {
79 struct mtd_info board_mtd;
80 struct nand_chip board_chip;
81 io_reg_t regs;
82};
83
84
85/* command and control functions */
86static void excite_nandflash_hwcontrol(struct mtd_info *mtd, int cmd)
87{
88 struct nand_chip *this = mtd->priv;
89 io_reg_t regs = container_of(mtd,struct excite_nandflash_drvdata,board_mtd)->regs;
90
91 switch (cmd) {
92 /* Select the command latch */
93 case NAND_CTL_SETCLE: this->IO_ADDR_W = regs + EXCITE_NANDFLASH_CMD;
94 break;
95 /* Deselect the command latch */
96 case NAND_CTL_CLRCLE: this->IO_ADDR_W = regs + EXCITE_NANDFLASH_DATA;
97 break;
98 /* Select the address latch */
99 case NAND_CTL_SETALE: this->IO_ADDR_W = regs + EXCITE_NANDFLASH_ADDR;
100 break;
101 /* Deselect the address latch */
102 case NAND_CTL_CLRALE: this->IO_ADDR_W = regs + EXCITE_NANDFLASH_DATA;
103 break;
104 /* Select the chip -- not used */
105 case NAND_CTL_SETNCE:
106 break;
107 /* Deselect the chip -- not used */
108 case NAND_CTL_CLRNCE:
109 break;
110 }
111
112 this->IO_ADDR_R = this->IO_ADDR_W;
113}
114
115/* excite_nandflash_devready()
116 *
117 * returns 0 if the nand is busy, 1 if it is ready
118 */
119static int excite_nandflash_devready(struct mtd_info *mtd)
120{
121 struct excite_nandflash_drvdata *drvdata =
122 container_of(mtd, struct excite_nandflash_drvdata, board_mtd);
123
124 return io_readb(drvdata->regs + EXCITE_NANDFLASH_STATUS);
125}
126
127/* device management functions */
128
129/* excite_nandflash_remove
130 *
131 * called by device layer to remove the driver
132 * the binding to the mtd and all allocated
133 * resources are released
134 */
135static int excite_nandflash_remove(struct device *dev)
136{
137 struct excite_nandflash_drvdata *this = dev_get_drvdata(dev);
138
139 pr_info(PFX "remove");
140
141 dev_set_drvdata(dev, NULL);
142
143 if (this == NULL) {
144 pr_debug(PFX "call remove without private data!!");
145 return 0;
146 }
147
148
149 /* free the common resources */
150 if (this->regs != NULL) {
151 iounmap(this->regs);
152 this->regs = NULL;
153 }
154
155 kfree(this);
156
157 return 0;
158}
159
160static int elapsed;
161
162void my_workqueue_handler(void *arg)
163{
164 elapsed = 1;
165}
166
167DECLARE_WORK(sigElapsed, my_workqueue_handler, 0);
168
169
170/* excite_nandflash_probe
171 *
172 * called by device layer when it finds a device matching
173 * one our driver can handled. This code checks to see if
174 * it can allocate all necessary resources then calls the
175 * nand layer to look for devices
176*/
177static int excite_nandflash_probe(struct device *dev)
178{
179 struct platform_device *pdev = to_platform_device(dev);
180
181 struct excite_nandflash_drvdata *drvdata; /* private driver data */
182 struct nand_chip *board_chip; /* private flash chip data */
183 struct mtd_info *board_mtd; /* mtd info for this board */
184
185 int err = 0;
186 int count = 0;
187 struct timeval tv,endtv;
188 unsigned int dt;
189
190 pr_info(PFX "probe dev: (%p)\n", dev);
191
192 pr_info(PFX "adjust LB timing\n");
193 ocd_writel(0x00000330, LDP2);
194
195 drvdata = kmalloc(sizeof(*drvdata), GFP_KERNEL);
196 if (unlikely(!drvdata)) {
197 printk(KERN_ERR PFX "no memory for drvdata\n");
198 err = -ENOMEM;
199 goto mem_error;
200 }
201
202 /* Initialize structures */
203 memset(drvdata, 0, sizeof(*drvdata));
204
205 /* bind private data into driver */
206 dev_set_drvdata(dev, drvdata);
207
208 /* allocate and map the resource */
209 drvdata->regs =
210 excite_nandflash_map_regs(pdev, EXCITE_NANDFLASH_RESOURCE_REGS);
211
212 if (unlikely(!drvdata->regs)) {
213 printk(KERN_ERR PFX "cannot reserve register region\n");
214 err = -ENXIO;
215 goto io_error;
216 }
217
218 /* initialise our chip */
219 board_chip = &drvdata->board_chip;
220
221 board_chip->IO_ADDR_R = drvdata->regs + EXCITE_NANDFLASH_DATA;
222 board_chip->IO_ADDR_W = drvdata->regs + EXCITE_NANDFLASH_DATA;
223
224 board_chip->hwcontrol = excite_nandflash_hwcontrol;
225 board_chip->dev_ready = excite_nandflash_devready;
226
227 board_chip->chip_delay = 25;
228 #if 0
229 /* TODO: speedup the initial scan */
230 board_chip->options = NAND_USE_FLASH_BBT;
231 #endif
232 board_chip->eccmode = NAND_ECC_SOFT;
233
234 /* link chip to mtd */
235 board_mtd = &drvdata->board_mtd;
236 board_mtd->priv = board_chip;
237
238
239 pr_info(PFX "FlashTest\n");
240 elapsed = 0;
241/* schedule_delayed_work(&sigElapsed, 1*HZ);
242 while (!elapsed) {
243 io_readb(drvdata->regs + EXCITE_NANDFLASH_STATUS);
244 count++;
245 }
246 pr_info(PFX "reads in 1 sec --> %d\n",count);
247*/
248 do_gettimeofday(&tv);
249 for (count = 0 ; count < 1000000; count ++) {
250 io_readb(drvdata->regs + EXCITE_NANDFLASH_STATUS);
251 }
252 do_gettimeofday(&endtv);
253 dt = (endtv.tv_sec - tv.tv_sec) * 1000000 + endtv.tv_usec - tv.tv_usec;
254 pr_info(PFX "%8d us timeval\n",dt);
255 pr_info(PFX "EndFlashTest\n");
256
257/* return with error to unload everything
258*/
259io_error:
260 iounmap(drvdata->regs);
261
262mem_error:
263 kfree(drvdata);
264
265 if (err == 0)
266 err = -EINVAL;
267 return err;
268}
269
270static struct device_driver excite_nandflash_driver = {
271 .name = "excite_nand",
272 .bus = &platform_bus_type,
273 .probe = excite_nandflash_probe,
274 .remove = excite_nandflash_remove,
275};
276
277static int __init excite_nandflash_init(void)
278{
279 pr_info(PFX "register Driver (Rev: $Revision:$)\n");
280 return driver_register(&excite_nandflash_driver);
281}
282
283static void __exit excite_nandflash_exit(void)
284{
285 driver_unregister(&excite_nandflash_driver);
286 pr_info(PFX "Driver unregistered");
287}
288
289module_init(excite_nandflash_init);
290module_exit(excite_nandflash_exit);
291
292MODULE_AUTHOR("Thies Moeller <thies.moeller@baslerweb.com>");
293MODULE_DESCRIPTION("Basler eXcite NAND-Flash driver");
294MODULE_LICENSE("GPL");
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-30 23:01:49 -0500