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1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
234 lines
5.4 KiB
C
234 lines
5.4 KiB
C
/*
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* Zoran zr36057/zr36067 PCI controller driver, for the
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* Pinnacle/Miro DC10/DC10+/DC30/DC30+, Iomega Buz, Linux
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* Media Labs LML33/LML33R10.
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*
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* This part handles the procFS entries (/proc/ZORAN[%d])
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*
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* Copyright (C) 2000 Serguei Miridonov <mirsev@cicese.mx>
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*
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* Currently maintained by:
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* Ronald Bultje <rbultje@ronald.bitfreak.net>
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* Laurent Pinchart <laurent.pinchart@skynet.be>
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* Mailinglist <mjpeg-users@lists.sf.net>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <linux/config.h>
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#include <linux/types.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/vmalloc.h>
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#include <linux/proc_fs.h>
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#include <linux/pci.h>
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#include <linux/i2c.h>
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#include <linux/i2c-algo-bit.h>
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#include <linux/videodev.h>
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#include <linux/spinlock.h>
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#include <linux/sem.h>
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#include <linux/seq_file.h>
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#include <linux/ctype.h>
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#include <asm/io.h>
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#include "videocodec.h"
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#include "zoran.h"
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#include "zoran_procfs.h"
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extern int *zr_debug;
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#define dprintk(num, format, args...) \
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do { \
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if (*zr_debug >= num) \
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printk(format, ##args); \
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} while (0)
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#ifdef CONFIG_PROC_FS
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struct procfs_params_zr36067 {
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char *name;
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short reg;
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u32 mask;
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short bit;
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};
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static const struct procfs_params_zr36067 zr67[] = {
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{"HSPol", 0x000, 1, 30},
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{"HStart", 0x000, 0x3ff, 10},
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{"HEnd", 0x000, 0x3ff, 0},
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{"VSPol", 0x004, 1, 30},
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{"VStart", 0x004, 0x3ff, 10},
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{"VEnd", 0x004, 0x3ff, 0},
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{"ExtFl", 0x008, 1, 26},
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{"TopField", 0x008, 1, 25},
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{"VCLKPol", 0x008, 1, 24},
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{"DupFld", 0x008, 1, 20},
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{"LittleEndian", 0x008, 1, 0},
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{"HsyncStart", 0x10c, 0xffff, 16},
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{"LineTot", 0x10c, 0xffff, 0},
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{"NAX", 0x110, 0xffff, 16},
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{"PAX", 0x110, 0xffff, 0},
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{"NAY", 0x114, 0xffff, 16},
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{"PAY", 0x114, 0xffff, 0},
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/* {"",,,}, */
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{NULL, 0, 0, 0},
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};
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static void
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setparam (struct zoran *zr,
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char *name,
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char *sval)
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{
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int i = 0, reg0, reg, val;
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while (zr67[i].name != NULL) {
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if (!strncmp(name, zr67[i].name, strlen(zr67[i].name))) {
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reg = reg0 = btread(zr67[i].reg);
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reg &= ~(zr67[i].mask << zr67[i].bit);
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if (!isdigit(sval[0]))
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break;
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val = simple_strtoul(sval, NULL, 0);
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if ((val & ~zr67[i].mask))
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break;
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reg |= (val & zr67[i].mask) << zr67[i].bit;
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dprintk(4,
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KERN_INFO
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"%s: setparam: setting ZR36067 register 0x%03x: 0x%08x=>0x%08x %s=%d\n",
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ZR_DEVNAME(zr), zr67[i].reg, reg0, reg,
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zr67[i].name, val);
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btwrite(reg, zr67[i].reg);
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break;
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}
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i++;
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}
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}
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static int zoran_show(struct seq_file *p, void *v)
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{
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struct zoran *zr = p->private;
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int i;
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seq_printf(p, "ZR36067 registers:\n");
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for (i = 0; i < 0x130; i += 16)
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seq_printf(p, "%03X %08X %08X %08X %08X \n", i,
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btread(i), btread(i+4), btread(i+8), btread(i+12));
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return 0;
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}
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static int zoran_open(struct inode *inode, struct file *file)
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{
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struct zoran *data = PDE(inode)->data;
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return single_open(file, zoran_show, data);
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}
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static ssize_t zoran_write(struct file *file, const char __user *buffer,
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size_t count, loff_t *ppos)
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{
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struct zoran *zr = PDE(file->f_dentry->d_inode)->data;
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char *string, *sp;
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char *line, *ldelim, *varname, *svar, *tdelim;
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if (count > 32768) /* Stupidity filter */
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return -EINVAL;
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string = sp = vmalloc(count + 1);
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if (!string) {
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dprintk(1,
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KERN_ERR
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"%s: write_proc: can not allocate memory\n",
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ZR_DEVNAME(zr));
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return -ENOMEM;
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}
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if (copy_from_user(string, buffer, count)) {
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vfree (string);
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return -EFAULT;
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}
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string[count] = 0;
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dprintk(4, KERN_INFO "%s: write_proc: name=%s count=%zu zr=%p\n",
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ZR_DEVNAME(zr), file->f_dentry->d_name.name, count, zr);
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ldelim = " \t\n";
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tdelim = "=";
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line = strpbrk(sp, ldelim);
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while (line) {
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*line = 0;
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svar = strpbrk(sp, tdelim);
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if (svar) {
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*svar = 0;
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varname = sp;
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svar++;
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setparam(zr, varname, svar);
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}
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sp = line + 1;
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line = strpbrk(sp, ldelim);
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}
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vfree(string);
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return count;
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}
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static struct file_operations zoran_operations = {
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.open = zoran_open,
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.read = seq_read,
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.write = zoran_write,
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.llseek = seq_lseek,
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.release = single_release,
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};
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#endif
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int
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zoran_proc_init (struct zoran *zr)
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{
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#ifdef CONFIG_PROC_FS
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char name[8];
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snprintf(name, 7, "zoran%d", zr->id);
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if ((zr->zoran_proc = create_proc_entry(name, 0, NULL))) {
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zr->zoran_proc->data = zr;
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zr->zoran_proc->owner = THIS_MODULE;
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zr->zoran_proc->proc_fops = &zoran_operations;
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dprintk(2,
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KERN_INFO
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"%s: procfs entry /proc/%s allocated. data=%p\n",
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ZR_DEVNAME(zr), name, zr->zoran_proc->data);
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} else {
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dprintk(1, KERN_ERR "%s: Unable to initialise /proc/%s\n",
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ZR_DEVNAME(zr), name);
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return 1;
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}
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#endif
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return 0;
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}
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void
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zoran_proc_cleanup (struct zoran *zr)
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{
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#ifdef CONFIG_PROC_FS
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char name[8];
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snprintf(name, 7, "zoran%d", zr->id);
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if (zr->zoran_proc)
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remove_proc_entry(name, NULL);
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zr->zoran_proc = NULL;
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#endif
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}
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