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/videodev2.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 #include "zoran_card.h"
52
53 #ifdef CONFIG_PROC_FS
54 struct procfs_params_zr36067 {
55 char *name;
56 short reg;
57 u32 mask;
58 short bit;
59 };
60
61 static const struct procfs_params_zr36067 zr67[] = {
62 {"HSPol", 0x000, 1, 30},
63 {"HStart", 0x000, 0x3ff, 10},
64 {"HEnd", 0x000, 0x3ff, 0},
65
66 {"VSPol", 0x004, 1, 30},
67 {"VStart", 0x004, 0x3ff, 10},
68 {"VEnd", 0x004, 0x3ff, 0},
69
70 {"ExtFl", 0x008, 1, 26},
71 {"TopField", 0x008, 1, 25},
72 {"VCLKPol", 0x008, 1, 24},
73 {"DupFld", 0x008, 1, 20},
74 {"LittleEndian", 0x008, 1, 0},
75
76 {"HsyncStart", 0x10c, 0xffff, 16},
77 {"LineTot", 0x10c, 0xffff, 0},
78
79 {"NAX", 0x110, 0xffff, 16},
80 {"PAX", 0x110, 0xffff, 0},
81
82 {"NAY", 0x114, 0xffff, 16},
83 {"PAY", 0x114, 0xffff, 0},
84
85 /* {"",,,}, */
86
87 {NULL, 0, 0, 0},
88 };
89
90 static void
setparam(struct zoran * zr,char * name,char * sval)91 setparam (struct zoran *zr,
92 char *name,
93 char *sval)
94 {
95 int i = 0, reg0, reg, val;
96
97 while (zr67[i].name != NULL) {
98 if (!strncmp(name, zr67[i].name, strlen(zr67[i].name))) {
99 reg = reg0 = btread(zr67[i].reg);
100 reg &= ~(zr67[i].mask << zr67[i].bit);
101 if (!isdigit(sval[0]))
102 break;
103 val = simple_strtoul(sval, NULL, 0);
104 if ((val & ~zr67[i].mask))
105 break;
106 reg |= (val & zr67[i].mask) << zr67[i].bit;
107 dprintk(4,
108 KERN_INFO
109 "%s: setparam: setting ZR36067 register 0x%03x: 0x%08x=>0x%08x %s=%d\n",
110 ZR_DEVNAME(zr), zr67[i].reg, reg0, reg,
111 zr67[i].name, val);
112 btwrite(reg, zr67[i].reg);
113 break;
114 }
115 i++;
116 }
117 }
118
zoran_show(struct seq_file * p,void * v)119 static int zoran_show(struct seq_file *p, void *v)
120 {
121 struct zoran *zr = p->private;
122 int i;
123
124 seq_printf(p, "ZR36067 registers:\n");
125 for (i = 0; i < 0x130; i += 16)
126 seq_printf(p, "%03X %08X %08X %08X %08X \n", i,
127 btread(i), btread(i+4), btread(i+8), btread(i+12));
128 return 0;
129 }
130
zoran_open(struct inode * inode,struct file * file)131 static int zoran_open(struct inode *inode, struct file *file)
132 {
133 struct zoran *data = PDE(inode)->data;
134 return single_open(file, zoran_show, data);
135 }
136
zoran_write(struct file * file,const char __user * buffer,size_t count,loff_t * ppos)137 static ssize_t zoran_write(struct file *file, const char __user *buffer,
138 size_t count, loff_t *ppos)
139 {
140 struct zoran *zr = PDE(file->f_path.dentry->d_inode)->data;
141 char *string, *sp;
142 char *line, *ldelim, *varname, *svar, *tdelim;
143
144 if (count > 32768) /* Stupidity filter */
145 return -EINVAL;
146
147 string = sp = vmalloc(count + 1);
148 if (!string) {
149 dprintk(1,
150 KERN_ERR
151 "%s: write_proc: can not allocate memory\n",
152 ZR_DEVNAME(zr));
153 return -ENOMEM;
154 }
155 if (copy_from_user(string, buffer, count)) {
156 vfree (string);
157 return -EFAULT;
158 }
159 string[count] = 0;
160 dprintk(4, KERN_INFO "%s: write_proc: name=%s count=%zu zr=%p\n",
161 ZR_DEVNAME(zr), file->f_path.dentry->d_name.name, count, zr);
162 ldelim = " \t\n";
163 tdelim = "=";
164 line = strpbrk(sp, ldelim);
165 while (line) {
166 *line = 0;
167 svar = strpbrk(sp, tdelim);
168 if (svar) {
169 *svar = 0;
170 varname = sp;
171 svar++;
172 setparam(zr, varname, svar);
173 }
174 sp = line + 1;
175 line = strpbrk(sp, ldelim);
176 }
177 vfree(string);
178
179 return count;
180 }
181
182 static const struct file_operations zoran_operations = {
183 .owner = THIS_MODULE,
184 .open = zoran_open,
185 .read = seq_read,
186 .write = zoran_write,
187 .llseek = seq_lseek,
188 .release = single_release,
189 };
190 #endif
191
192 int
zoran_proc_init(struct zoran * zr)193 zoran_proc_init (struct zoran *zr)
194 {
195 #ifdef CONFIG_PROC_FS
196 char name[8];
197
198 snprintf(name, 7, "zoran%d", zr->id);
199 zr->zoran_proc = proc_create_data(name, 0, NULL, &zoran_operations, zr);
200 if (zr->zoran_proc != NULL) {
201 dprintk(2,
202 KERN_INFO
203 "%s: procfs entry /proc/%s allocated. data=%p\n",
204 ZR_DEVNAME(zr), name, zr->zoran_proc->data);
205 } else {
206 dprintk(1, KERN_ERR "%s: Unable to initialise /proc/%s\n",
207 ZR_DEVNAME(zr), name);
208 return 1;
209 }
210 #endif
211 return 0;
212 }
213
214 void
zoran_proc_cleanup(struct zoran * zr)215 zoran_proc_cleanup (struct zoran *zr)
216 {
217 #ifdef CONFIG_PROC_FS
218 char name[8];
219
220 snprintf(name, 7, "zoran%d", zr->id);
221 if (zr->zoran_proc)
222 remove_proc_entry(name, NULL);
223 zr->zoran_proc = NULL;
224 #endif
225 }
226