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/*

 * Zoran zr36057/zr36067 PCI controller driver, for the

 * Pinnacle/Miro DC10/DC10+/DC30/DC30+, Iomega Buz, Linux

 * Media Labs LML33/LML33R10.

 *

 * This part handles the procFS entries (/proc/ZORAN[%d])

 *

 * Copyright (C) 2000 Serguei Miridonov <mirsev@cicese.mx>

 *

 * Currently maintained by:

 *   Ronald Bultje    <rbultje@ronald.bitfreak.net>

 *   Laurent Pinchart <laurent.pinchart@skynet.be>

 *   Mailinglist      <mjpeg-users@lists.sf.net>

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation; either version 2 of the License, or

 * (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

 */

#include <linux/types.h>

#include <linux/kernel.h>

#include <linux/module.h>

#include <linux/vmalloc.h>

#include <linux/proc_fs.h>

#include <linux/pci.h>

#include <linux/i2c.h>

#include <linux/i2c-algo-bit.h>

#include <linux/videodev.h>

#include <linux/spinlock.h>

#include <linux/sem.h>

#include <linux/seq_file.h>

#include <linux/ctype.h>

#include <linux/poll.h>

#include <asm/io.h>

#include "videocodec.h"

#include "zoran.h"

#include "zoran_procfs.h"

#include "zoran_card.h"

#ifdef CONFIG_PROC_FS

struct procfs_params_zr36067 {

        char *name;

        short reg;

        u32 mask;

        short bit;

};

static const struct procfs_params_zr36067 zr67[] = {

        {"HSPol", 0x000, 1, 30},

        {"HStart", 0x000, 0x3ff, 10},

        {"HEnd", 0x000, 0x3ff, 0},

        {"VSPol", 0x004, 1, 30},

        {"VStart", 0x004, 0x3ff, 10},

        {"VEnd", 0x004, 0x3ff, 0},

        {"ExtFl", 0x008, 1, 26},

        {"TopField", 0x008, 1, 25},

        {"VCLKPol", 0x008, 1, 24},

        {"DupFld", 0x008, 1, 20},

        {"LittleEndian", 0x008, 1, 0},

        {"HsyncStart", 0x10c, 0xffff, 16},

        {"LineTot", 0x10c, 0xffff, 0},

        {"NAX", 0x110, 0xffff, 16},

        {"PAX", 0x110, 0xffff, 0},

        {"NAY", 0x114, 0xffff, 16},

        {"PAY", 0x114, 0xffff, 0},

        /* {"",,,}, */

        {NULL, 0, 0, 0},

};

static void

setparam (struct zoran *zr,

          char         *name,

          char         *sval)

{

        int i = 0, reg0, reg, val;

        while (zr67[i].name != NULL) {

                if (!strncmp(name, zr67[i].name, strlen(zr67[i].name))) {

                        reg = reg0 = btread(zr67[i].reg);

                        reg &= ~(zr67[i].mask << zr67[i].bit);

                        if (!isdigit(sval[0]))

                                break;

                        val = simple_strtoul(sval, NULL, 0);

                        if ((val & ~zr67[i].mask))

                                break;

                        reg |= (val & zr67[i].mask) << zr67[i].bit;

                        dprintk(4,

                                KERN_INFO

                                "%s: setparam: setting ZR36067 register 0x%03x: 0x%08x=>0x%08x %s=%d\n",

                                ZR_DEVNAME(zr), zr67[i].reg, reg0, reg,

                                zr67[i].name, val);

                        btwrite(reg, zr67[i].reg);

                        break;

                }

                i++;

        }

}

static int zoran_show(struct seq_file *p, void *v)

{

        struct zoran *zr = p->private;

        int i;

        seq_printf(p, "ZR36067 registers:\n");

        for (i = 0; i < 0x130; i += 16)

                seq_printf(p, "%03X %08X  %08X  %08X  %08X \n", i,

                           btread(i), btread(i+4), btread(i+8), btread(i+12));

        return 0;

}

static int zoran_open(struct inode *inode, struct file *file)

{

        struct zoran *data = PDE(inode)->data;

        return single_open(file, zoran_show, data);

}

static ssize_t zoran_write(struct file *file, const char __user *buffer,

                        size_t count, loff_t *ppos)

{

        struct zoran *zr = PDE(file->f_path.dentry->d_inode)->data;

        char *string, *sp;

        char *line, *ldelim, *varname, *svar, *tdelim;

        if (count > 32768)      /* Stupidity filter */

                return -EINVAL;

        string = sp = vmalloc(count + 1);

        if (!string) {

                dprintk(1,

                        KERN_ERR

                        "%s: write_proc: can not allocate memory\n",

                        ZR_DEVNAME(zr));

                return -ENOMEM;

        }

        if (copy_from_user(string, buffer, count)) {

                vfree (string);

                return -EFAULT;

        }

        string[count] = 0;

        dprintk(4, KERN_INFO "%s: write_proc: name=%s count=%zu zr=%p\n",

                ZR_DEVNAME(zr), file->f_path.dentry->d_name.name, count, zr);

        ldelim = " \t\n";

        tdelim = "=";

        line = strpbrk(sp, ldelim);

        while (line) {

                *line = 0;

                svar = strpbrk(sp, tdelim);

                if (svar) {

                        *svar = 0;

                        varname = sp;

                        svar++;

                        setparam(zr, varname, svar);

                }

                sp = line + 1;

                line = strpbrk(sp, ldelim);

        }

        vfree(string);

        return count;

}

static const struct file_operations zoran_operations = {

        .open           = zoran_open,

        .read           = seq_read,

        .write          = zoran_write,

        .llseek         = seq_lseek,

        .release        = single_release,

};

#endif

int

zoran_proc_init (struct zoran *zr)

{

#ifdef CONFIG_PROC_FS

        char name[8];

        snprintf(name, 7, "zoran%d", zr->id);

        if ((zr->zoran_proc = create_proc_entry(name, 0, NULL))) {

                zr->zoran_proc->data = zr;

                zr->zoran_proc->owner = THIS_MODULE;

                zr->zoran_proc->proc_fops = &zoran_operations;

                dprintk(2,

                        KERN_INFO

                        "%s: procfs entry /proc/%s allocated. data=%p\n",

                        ZR_DEVNAME(zr), name, zr->zoran_proc->data);

        } else {

                dprintk(1, KERN_ERR "%s: Unable to initialise /proc/%s\n",

                        ZR_DEVNAME(zr), name);

                return 1;

        }

#endif

        return 0;

}

void

zoran_proc_cleanup (struct zoran *zr)

{

#ifdef CONFIG_PROC_FS

        char name[8];

        snprintf(name, 7, "zoran%d", zr->id);

        if (zr->zoran_proc)

                remove_proc_entry(name, NULL);

        zr->zoran_proc = NULL;

#endif

}