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
26 #include <linux/types.h>
27 #include <linux/kernel.h>
28 #include <linux/module.h>
29 #include <linux/vmalloc.h>
30
31 #include <linux/proc_fs.h>
32 #include <linux/pci.h>
33 #include <linux/i2c.h>
34 #include <linux/i2c-algo-bit.h>
35 #include <linux/videodev2.h>
36 #include <linux/spinlock.h>
37 #include <linux/sem.h>
38 #include <linux/seq_file.h>
39
40 #include <linux/ctype.h>
41 #include <linux/poll.h>
42 #include <asm/io.h>
43
44 #include "videocodec.h"
45 #include "zoran.h"
46 #include "zoran_procfs.h"
47 #include "zoran_card.h"
48
49 #ifdef CONFIG_PROC_FS
50 struct procfs_params_zr36067 {
51 char *name;
52 short reg;
53 u32 mask;
54 short bit;
55 };
56
57 static const struct procfs_params_zr36067 zr67[] = {
58 {"HSPol", 0x000, 1, 30},
59 {"HStart", 0x000, 0x3ff, 10},
60 {"HEnd", 0x000, 0x3ff, 0},
61
62 {"VSPol", 0x004, 1, 30},
63 {"VStart", 0x004, 0x3ff, 10},
64 {"VEnd", 0x004, 0x3ff, 0},
65
66 {"ExtFl", 0x008, 1, 26},
67 {"TopField", 0x008, 1, 25},
68 {"VCLKPol", 0x008, 1, 24},
69 {"DupFld", 0x008, 1, 20},
70 {"LittleEndian", 0x008, 1, 0},
71
72 {"HsyncStart", 0x10c, 0xffff, 16},
73 {"LineTot", 0x10c, 0xffff, 0},
74
75 {"NAX", 0x110, 0xffff, 16},
76 {"PAX", 0x110, 0xffff, 0},
77
78 {"NAY", 0x114, 0xffff, 16},
79 {"PAY", 0x114, 0xffff, 0},
80
81 /* {"",,,}, */
82
83 {NULL, 0, 0, 0},
84 };
85
86 static void
setparam(struct zoran * zr,char * name,char * sval)87 setparam (struct zoran *zr,
88 char *name,
89 char *sval)
90 {
91 int i = 0, reg0, reg, val;
92
93 while (zr67[i].name != NULL) {
94 if (!strncmp(name, zr67[i].name, strlen(zr67[i].name))) {
95 reg = reg0 = btread(zr67[i].reg);
96 reg &= ~(zr67[i].mask << zr67[i].bit);
97 if (!isdigit(sval[0]))
98 break;
99 val = simple_strtoul(sval, NULL, 0);
100 if ((val & ~zr67[i].mask))
101 break;
102 reg |= (val & zr67[i].mask) << zr67[i].bit;
103 dprintk(4,
104 KERN_INFO
105 "%s: setparam: setting ZR36067 register 0x%03x: 0x%08x=>0x%08x %s=%d\n",
106 ZR_DEVNAME(zr), zr67[i].reg, reg0, reg,
107 zr67[i].name, val);
108 btwrite(reg, zr67[i].reg);
109 break;
110 }
111 i++;
112 }
113 }
114
zoran_show(struct seq_file * p,void * v)115 static int zoran_show(struct seq_file *p, void *v)
116 {
117 struct zoran *zr = p->private;
118 int i;
119
120 seq_printf(p, "ZR36067 registers:\n");
121 for (i = 0; i < 0x130; i += 16)
122 seq_printf(p, "%03X %08X %08X %08X %08X \n", i,
123 btread(i), btread(i+4), btread(i+8), btread(i+12));
124 return 0;
125 }
126
zoran_open(struct inode * inode,struct file * file)127 static int zoran_open(struct inode *inode, struct file *file)
128 {
129 struct zoran *data = PDE_DATA(inode);
130 return single_open(file, zoran_show, data);
131 }
132
zoran_write(struct file * file,const char __user * buffer,size_t count,loff_t * ppos)133 static ssize_t zoran_write(struct file *file, const char __user *buffer,
134 size_t count, loff_t *ppos)
135 {
136 struct zoran *zr = PDE_DATA(file_inode(file));
137 char *string, *sp;
138 char *line, *ldelim, *varname, *svar, *tdelim;
139
140 if (count > 32768) /* Stupidity filter */
141 return -EINVAL;
142
143 string = sp = vmalloc(count + 1);
144 if (!string) {
145 dprintk(1,
146 KERN_ERR
147 "%s: write_proc: can not allocate memory\n",
148 ZR_DEVNAME(zr));
149 return -ENOMEM;
150 }
151 if (copy_from_user(string, buffer, count)) {
152 vfree (string);
153 return -EFAULT;
154 }
155 string[count] = 0;
156 dprintk(4, KERN_INFO "%s: write_proc: name=%pD count=%zu zr=%p\n",
157 ZR_DEVNAME(zr), file, count, zr);
158 ldelim = " \t\n";
159 tdelim = "=";
160 line = strpbrk(sp, ldelim);
161 while (line) {
162 *line = 0;
163 svar = strpbrk(sp, tdelim);
164 if (svar) {
165 *svar = 0;
166 varname = sp;
167 svar++;
168 setparam(zr, varname, svar);
169 }
170 sp = line + 1;
171 line = strpbrk(sp, ldelim);
172 }
173 vfree(string);
174
175 return count;
176 }
177
178 static const struct file_operations zoran_operations = {
179 .owner = THIS_MODULE,
180 .open = zoran_open,
181 .read = seq_read,
182 .write = zoran_write,
183 .llseek = seq_lseek,
184 .release = single_release,
185 };
186 #endif
187
188 int
zoran_proc_init(struct zoran * zr)189 zoran_proc_init (struct zoran *zr)
190 {
191 #ifdef CONFIG_PROC_FS
192 char name[8];
193
194 snprintf(name, 7, "zoran%d", zr->id);
195 zr->zoran_proc = proc_create_data(name, 0, NULL, &zoran_operations, zr);
196 if (zr->zoran_proc != NULL) {
197 dprintk(2,
198 KERN_INFO
199 "%s: procfs entry /proc/%s allocated. data=%p\n",
200 ZR_DEVNAME(zr), name, zr);
201 } else {
202 dprintk(1, KERN_ERR "%s: Unable to initialise /proc/%s\n",
203 ZR_DEVNAME(zr), name);
204 return 1;
205 }
206 #endif
207 return 0;
208 }
209
210 void
zoran_proc_cleanup(struct zoran * zr)211 zoran_proc_cleanup (struct zoran *zr)
212 {
213 #ifdef CONFIG_PROC_FS
214 char name[8];
215
216 snprintf(name, 7, "zoran%d", zr->id);
217 if (zr->zoran_proc)
218 remove_proc_entry(name, NULL);
219 zr->zoran_proc = NULL;
220 #endif
221 }
222
