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1da177e4 LT |
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/config.h> | |
31 | #include <linux/types.h> | |
32 | #include <linux/kernel.h> | |
33 | #include <linux/module.h> | |
34 | #include <linux/vmalloc.h> | |
35 | ||
36 | #include <linux/proc_fs.h> | |
37 | #include <linux/pci.h> | |
38 | #include <linux/i2c.h> | |
39 | #include <linux/i2c-algo-bit.h> | |
40 | #include <linux/videodev.h> | |
41 | #include <linux/spinlock.h> | |
42 | #include <linux/sem.h> | |
43 | #include <linux/seq_file.h> | |
44 | ||
45 | #include <linux/ctype.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 | } |