Merge branch '83xx' into for_paulus
[linux-2.6] / drivers / media / video / zoran_procfs.c
1 /*
2  * Zoran zr36057/zr36067 PCI controller driver, for the
3  * Pinnacle/Miro DC10/DC10+/DC30/DC30+, Iomega Buz, Linux
4  * Media Labs LML33/LML33R10.
5  *
6  * This part handles the procFS entries (/proc/ZORAN[%d])
7  *
8  * Copyright (C) 2000 Serguei Miridonov <mirsev@cicese.mx>
9  *
10  * Currently maintained by:
11  *   Ronald Bultje    <rbultje@ronald.bitfreak.net>
12  *   Laurent Pinchart <laurent.pinchart@skynet.be>
13  *   Mailinglist      <mjpeg-users@lists.sf.net>
14  *
15  * This program is free software; you can redistribute it and/or modify
16  * it under the terms of the GNU General Public License as published by
17  * the Free Software Foundation; either version 2 of the License, or
18  * (at your option) any later version.
19  *
20  * This program is distributed in the hope that it will be useful,
21  * but WITHOUT ANY WARRANTY; without even the implied warranty of
22  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
23  * GNU General Public License for more details.
24  *
25  * You should have received a copy of the GNU General Public License
26  * along with this program; if not, write to the Free Software
27  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
28  */
29
30 #include <linux/types.h>
31 #include <linux/kernel.h>
32 #include <linux/module.h>
33 #include <linux/vmalloc.h>
34
35 #include <linux/proc_fs.h>
36 #include <linux/pci.h>
37 #include <linux/i2c.h>
38 #include <linux/i2c-algo-bit.h>
39 #include <linux/videodev.h>
40 #include <linux/spinlock.h>
41 #include <linux/sem.h>
42 #include <linux/seq_file.h>
43
44 #include <linux/ctype.h>
45 #include <linux/poll.h>
46 #include <asm/io.h>
47
48 #include "videocodec.h"
49 #include "zoran.h"
50 #include "zoran_procfs.h"
51
52 extern int *zr_debug;
53
54 #define dprintk(num, format, args...) \
55         do { \
56                 if (*zr_debug >= num) \
57                         printk(format, ##args); \
58         } while (0)
59
60 #ifdef CONFIG_PROC_FS
61 struct procfs_params_zr36067 {
62         char *name;
63         short reg;
64         u32 mask;
65         short bit;
66 };
67
68 static const struct procfs_params_zr36067 zr67[] = {
69         {"HSPol", 0x000, 1, 30},
70         {"HStart", 0x000, 0x3ff, 10},
71         {"HEnd", 0x000, 0x3ff, 0},
72
73         {"VSPol", 0x004, 1, 30},
74         {"VStart", 0x004, 0x3ff, 10},
75         {"VEnd", 0x004, 0x3ff, 0},
76
77         {"ExtFl", 0x008, 1, 26},
78         {"TopField", 0x008, 1, 25},
79         {"VCLKPol", 0x008, 1, 24},
80         {"DupFld", 0x008, 1, 20},
81         {"LittleEndian", 0x008, 1, 0},
82
83         {"HsyncStart", 0x10c, 0xffff, 16},
84         {"LineTot", 0x10c, 0xffff, 0},
85
86         {"NAX", 0x110, 0xffff, 16},
87         {"PAX", 0x110, 0xffff, 0},
88
89         {"NAY", 0x114, 0xffff, 16},
90         {"PAY", 0x114, 0xffff, 0},
91
92         /* {"",,,}, */
93
94         {NULL, 0, 0, 0},
95 };
96
97 static void
98 setparam (struct zoran *zr,
99           char         *name,
100           char         *sval)
101 {
102         int i = 0, reg0, reg, val;
103
104         while (zr67[i].name != NULL) {
105                 if (!strncmp(name, zr67[i].name, strlen(zr67[i].name))) {
106                         reg = reg0 = btread(zr67[i].reg);
107                         reg &= ~(zr67[i].mask << zr67[i].bit);
108                         if (!isdigit(sval[0]))
109                                 break;
110                         val = simple_strtoul(sval, NULL, 0);
111                         if ((val & ~zr67[i].mask))
112                                 break;
113                         reg |= (val & zr67[i].mask) << zr67[i].bit;
114                         dprintk(4,
115                                 KERN_INFO
116                                 "%s: setparam: setting ZR36067 register 0x%03x: 0x%08x=>0x%08x %s=%d\n",
117                                 ZR_DEVNAME(zr), zr67[i].reg, reg0, reg,
118                                 zr67[i].name, val);
119                         btwrite(reg, zr67[i].reg);
120                         break;
121                 }
122                 i++;
123         }
124 }
125
126 static int zoran_show(struct seq_file *p, void *v)
127 {
128         struct zoran *zr = p->private;
129         int i;
130
131         seq_printf(p, "ZR36067 registers:\n");
132         for (i = 0; i < 0x130; i += 16)
133                 seq_printf(p, "%03X %08X  %08X  %08X  %08X \n", i,
134                            btread(i), btread(i+4), btread(i+8), btread(i+12));
135         return 0;
136 }
137
138 static int zoran_open(struct inode *inode, struct file *file)
139 {
140         struct zoran *data = PDE(inode)->data;
141         return single_open(file, zoran_show, data);
142 }
143
144 static ssize_t zoran_write(struct file *file, const char __user *buffer,
145                         size_t count, loff_t *ppos)
146 {
147         struct zoran *zr = PDE(file->f_dentry->d_inode)->data;
148         char *string, *sp;
149         char *line, *ldelim, *varname, *svar, *tdelim;
150
151         if (count > 32768)      /* Stupidity filter */
152                 return -EINVAL;
153
154         string = sp = vmalloc(count + 1);
155         if (!string) {
156                 dprintk(1,
157                         KERN_ERR
158                         "%s: write_proc: can not allocate memory\n",
159                         ZR_DEVNAME(zr));
160                 return -ENOMEM;
161         }
162         if (copy_from_user(string, buffer, count)) {
163                 vfree (string);
164                 return -EFAULT;
165         }
166         string[count] = 0;
167         dprintk(4, KERN_INFO "%s: write_proc: name=%s count=%zu zr=%p\n",
168                 ZR_DEVNAME(zr), file->f_dentry->d_name.name, count, zr);
169         ldelim = " \t\n";
170         tdelim = "=";
171         line = strpbrk(sp, ldelim);
172         while (line) {
173                 *line = 0;
174                 svar = strpbrk(sp, tdelim);
175                 if (svar) {
176                         *svar = 0;
177                         varname = sp;
178                         svar++;
179                         setparam(zr, varname, svar);
180                 }
181                 sp = line + 1;
182                 line = strpbrk(sp, ldelim);
183         }
184         vfree(string);
185
186         return count;
187 }
188
189 static struct file_operations zoran_operations = {
190         .open           = zoran_open,
191         .read           = seq_read,
192         .write          = zoran_write,
193         .llseek         = seq_lseek,
194         .release        = single_release,
195 };
196 #endif
197
198 int
199 zoran_proc_init (struct zoran *zr)
200 {
201 #ifdef CONFIG_PROC_FS
202         char name[8];
203
204         snprintf(name, 7, "zoran%d", zr->id);
205         if ((zr->zoran_proc = create_proc_entry(name, 0, NULL))) {
206                 zr->zoran_proc->data = zr;
207                 zr->zoran_proc->owner = THIS_MODULE;
208                 zr->zoran_proc->proc_fops = &zoran_operations;
209                 dprintk(2,
210                         KERN_INFO
211                         "%s: procfs entry /proc/%s allocated. data=%p\n",
212                         ZR_DEVNAME(zr), name, zr->zoran_proc->data);
213         } else {
214                 dprintk(1, KERN_ERR "%s: Unable to initialise /proc/%s\n",
215                         ZR_DEVNAME(zr), name);
216                 return 1;
217         }
218 #endif
219         return 0;
220 }
221
222 void
223 zoran_proc_cleanup (struct zoran *zr)
224 {
225 #ifdef CONFIG_PROC_FS
226         char name[8];
227
228         snprintf(name, 7, "zoran%d", zr->id);
229         if (zr->zoran_proc)
230                 remove_proc_entry(name, NULL);
231         zr->zoran_proc = NULL;
232 #endif
233 }