2008-02-16 00:53:09 +00:00
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/*
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* Copyright (C) 2005-2006 Micronas USA Inc.
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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 (Version 2) as
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* published by the Free Software Foundation.
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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 Foundation,
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* Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
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*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/i2c.h>
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2008-09-30 02:36:24 +00:00
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#include <linux/videodev2.h>
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2008-02-16 00:53:09 +00:00
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#include <linux/ioctl.h>
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#include "wis-i2c.h"
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struct wis_tw9903 {
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int norm;
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int brightness;
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int contrast;
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int hue;
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};
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static u8 initial_registers[] =
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{
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0x02, 0x44, /* input 1, composite */
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0x03, 0x92, /* correct digital format */
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0x04, 0x00,
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0x05, 0x80, /* or 0x00 for PAL */
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0x06, 0x40, /* second internal current reference */
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0x07, 0x02, /* window */
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0x08, 0x14, /* window */
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0x09, 0xf0, /* window */
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0x0a, 0x81, /* window */
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0x0b, 0xd0, /* window */
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0x0c, 0x8c,
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0x0d, 0x00, /* scaling */
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0x0e, 0x11, /* scaling */
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0x0f, 0x00, /* scaling */
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0x10, 0x00, /* brightness */
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0x11, 0x60, /* contrast */
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0x12, 0x01, /* sharpness */
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0x13, 0x7f, /* U gain */
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0x14, 0x5a, /* V gain */
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0x15, 0x00, /* hue */
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0x16, 0xc3, /* sharpness */
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0x18, 0x00,
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0x19, 0x58, /* vbi */
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0x1a, 0x80,
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0x1c, 0x0f, /* video norm */
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0x1d, 0x7f, /* video norm */
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0x20, 0xa0, /* clamping gain (working 0x50) */
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0x21, 0x22,
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0x22, 0xf0,
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0x23, 0xfe,
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0x24, 0x3c,
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0x25, 0x38,
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0x26, 0x44,
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0x27, 0x20,
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0x28, 0x00,
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0x29, 0x15,
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0x2a, 0xa0,
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0x2b, 0x44,
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0x2c, 0x37,
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0x2d, 0x00,
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0x2e, 0xa5, /* burst PLL control (working: a9) */
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0x2f, 0xe0, /* 0xea is blue test frame -- 0xe0 for normal */
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0x31, 0x00,
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0x33, 0x22,
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0x34, 0x11,
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0x35, 0x35,
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0x3b, 0x05,
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0x06, 0xc0, /* reset device */
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0x00, 0x00, /* Terminator (reg 0x00 is read-only) */
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};
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static int write_reg(struct i2c_client *client, u8 reg, u8 value)
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{
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return i2c_smbus_write_byte_data(client, reg, value);
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}
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static int write_regs(struct i2c_client *client, u8 *regs)
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{
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int i;
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for (i = 0; regs[i] != 0x00; i += 2)
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if (i2c_smbus_write_byte_data(client, regs[i], regs[i + 1]) < 0)
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return -1;
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return 0;
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}
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static int wis_tw9903_command(struct i2c_client *client,
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unsigned int cmd, void *arg)
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{
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struct wis_tw9903 *dec = i2c_get_clientdata(client);
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switch (cmd) {
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2008-09-30 02:36:24 +00:00
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case VIDIOC_S_INPUT:
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2008-02-16 00:53:09 +00:00
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{
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int *input = arg;
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i2c_smbus_write_byte_data(client, 0x02, 0x40 | (*input << 1));
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break;
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}
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2009-09-15 14:06:04 +00:00
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#if 0
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/* The scaler on this thing seems to be horribly broken */
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2008-02-16 00:53:09 +00:00
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case DECODER_SET_RESOLUTION:
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{
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struct video_decoder_resolution *res = arg;
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/*int hscale = 256 * 720 / res->width;*/
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int hscale = 256 * 720 / (res->width - (res->width > 704 ? 0 : 8));
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2008-09-30 02:36:24 +00:00
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int vscale = 256 * (dec->norm & V4L2_STD_NTSC ? 240 : 288)
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2008-02-16 00:53:09 +00:00
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/ res->height;
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u8 regs[] = {
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0x0d, vscale & 0xff,
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0x0f, hscale & 0xff,
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0x0e, ((vscale & 0xf00) >> 4) | ((hscale & 0xf00) >> 8),
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0x06, 0xc0, /* reset device */
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0, 0,
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};
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printk(KERN_DEBUG "vscale is %04x, hscale is %04x\n",
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vscale, hscale);
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/*write_regs(client, regs);*/
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break;
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}
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#endif
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2008-09-30 02:36:24 +00:00
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case VIDIOC_S_STD:
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2008-02-16 00:53:09 +00:00
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{
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2008-09-30 02:36:24 +00:00
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v4l2_std_id *input = arg;
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2008-02-16 00:53:09 +00:00
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u8 regs[] = {
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2008-09-30 02:36:24 +00:00
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0x05, *input & V4L2_STD_NTSC ? 0x80 : 0x00,
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0x07, *input & V4L2_STD_NTSC ? 0x02 : 0x12,
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0x08, *input & V4L2_STD_NTSC ? 0x14 : 0x18,
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0x09, *input & V4L2_STD_NTSC ? 0xf0 : 0x20,
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2008-02-16 00:53:09 +00:00
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0, 0,
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};
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write_regs(client, regs);
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dec->norm = *input;
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break;
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}
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case VIDIOC_QUERYCTRL:
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{
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struct v4l2_queryctrl *ctrl = arg;
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switch (ctrl->id) {
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case V4L2_CID_BRIGHTNESS:
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ctrl->type = V4L2_CTRL_TYPE_INTEGER;
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strncpy(ctrl->name, "Brightness", sizeof(ctrl->name));
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ctrl->minimum = -128;
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ctrl->maximum = 127;
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ctrl->step = 1;
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ctrl->default_value = 0x00;
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ctrl->flags = 0;
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break;
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case V4L2_CID_CONTRAST:
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ctrl->type = V4L2_CTRL_TYPE_INTEGER;
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strncpy(ctrl->name, "Contrast", sizeof(ctrl->name));
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ctrl->minimum = 0;
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ctrl->maximum = 255;
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ctrl->step = 1;
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ctrl->default_value = 0x60;
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ctrl->flags = 0;
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break;
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#if 0
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/* I don't understand how the Chroma Gain registers work... */
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case V4L2_CID_SATURATION:
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ctrl->type = V4L2_CTRL_TYPE_INTEGER;
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strncpy(ctrl->name, "Saturation", sizeof(ctrl->name));
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ctrl->minimum = 0;
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ctrl->maximum = 127;
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ctrl->step = 1;
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ctrl->default_value = 64;
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ctrl->flags = 0;
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break;
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#endif
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case V4L2_CID_HUE:
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ctrl->type = V4L2_CTRL_TYPE_INTEGER;
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strncpy(ctrl->name, "Hue", sizeof(ctrl->name));
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ctrl->minimum = -128;
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ctrl->maximum = 127;
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ctrl->step = 1;
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ctrl->default_value = 0;
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ctrl->flags = 0;
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break;
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}
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break;
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}
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case VIDIOC_S_CTRL:
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{
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struct v4l2_control *ctrl = arg;
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switch (ctrl->id) {
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case V4L2_CID_BRIGHTNESS:
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if (ctrl->value > 127)
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dec->brightness = 127;
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else if (ctrl->value < -128)
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dec->brightness = -128;
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else
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dec->brightness = ctrl->value;
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write_reg(client, 0x10, dec->brightness);
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break;
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case V4L2_CID_CONTRAST:
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if (ctrl->value > 255)
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dec->contrast = 255;
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else if (ctrl->value < 0)
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dec->contrast = 0;
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else
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dec->contrast = ctrl->value;
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write_reg(client, 0x11, dec->contrast);
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break;
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#if 0
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case V4L2_CID_SATURATION:
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if (ctrl->value > 127)
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dec->saturation = 127;
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else if (ctrl->value < 0)
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dec->saturation = 0;
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else
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dec->saturation = ctrl->value;
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/*write_reg(client, 0x0c, dec->saturation);*/
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break;
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#endif
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case V4L2_CID_HUE:
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if (ctrl->value > 127)
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dec->hue = 127;
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else if (ctrl->value < -128)
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dec->hue = -128;
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else
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dec->hue = ctrl->value;
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write_reg(client, 0x15, dec->hue);
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break;
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}
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break;
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}
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case VIDIOC_G_CTRL:
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{
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struct v4l2_control *ctrl = arg;
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switch (ctrl->id) {
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case V4L2_CID_BRIGHTNESS:
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ctrl->value = dec->brightness;
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break;
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case V4L2_CID_CONTRAST:
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ctrl->value = dec->contrast;
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break;
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#if 0
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case V4L2_CID_SATURATION:
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ctrl->value = dec->saturation;
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break;
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#endif
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case V4L2_CID_HUE:
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ctrl->value = dec->hue;
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break;
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}
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break;
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}
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default:
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break;
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}
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return 0;
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}
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2009-04-21 19:47:22 +00:00
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static int wis_tw9903_probe(struct i2c_client *client,
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const struct i2c_device_id *id)
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2008-02-16 00:53:09 +00:00
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{
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2009-04-21 19:47:22 +00:00
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struct i2c_adapter *adapter = client->adapter;
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2008-02-16 00:53:09 +00:00
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struct wis_tw9903 *dec;
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if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
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2009-04-21 19:47:22 +00:00
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return -ENODEV;
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2008-02-16 00:53:09 +00:00
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dec = kmalloc(sizeof(struct wis_tw9903), GFP_KERNEL);
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2009-04-21 19:47:22 +00:00
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if (dec == NULL)
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2008-02-16 00:53:09 +00:00
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return -ENOMEM;
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2009-04-21 19:47:22 +00:00
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2008-09-30 02:36:24 +00:00
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dec->norm = V4L2_STD_NTSC;
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2008-02-16 00:53:09 +00:00
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dec->brightness = 0;
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dec->contrast = 0x60;
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dec->hue = 0;
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i2c_set_clientdata(client, dec);
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printk(KERN_DEBUG
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"wis-tw9903: initializing TW9903 at address %d on %s\n",
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2009-04-21 19:47:22 +00:00
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client->addr, adapter->name);
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2008-02-16 00:53:09 +00:00
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if (write_regs(client, initial_registers) < 0) {
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printk(KERN_ERR "wis-tw9903: error initializing TW9903\n");
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kfree(dec);
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2009-04-21 19:47:22 +00:00
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return -ENODEV;
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2008-02-16 00:53:09 +00:00
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}
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return 0;
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}
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2009-04-21 19:47:22 +00:00
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static int wis_tw9903_remove(struct i2c_client *client)
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2008-02-16 00:53:09 +00:00
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{
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struct wis_tw9903 *dec = i2c_get_clientdata(client);
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2009-04-21 19:47:22 +00:00
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i2c_set_clientdata(client, NULL);
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2008-02-16 00:53:09 +00:00
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kfree(dec);
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return 0;
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}
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2009-04-21 19:47:22 +00:00
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static struct i2c_device_id wis_tw9903_id[] = {
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{ "wis_tw9903", 0 },
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{ }
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};
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2008-02-16 00:53:09 +00:00
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static struct i2c_driver wis_tw9903_driver = {
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.driver = {
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.name = "WIS TW9903 I2C driver",
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},
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2009-04-21 19:47:22 +00:00
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.probe = wis_tw9903_probe,
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.remove = wis_tw9903_remove,
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2008-02-16 00:53:09 +00:00
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.command = wis_tw9903_command,
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2009-04-21 19:47:22 +00:00
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.id_table = wis_tw9903_id,
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2008-02-16 00:53:09 +00:00
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};
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static int __init wis_tw9903_init(void)
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{
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2009-04-21 19:47:22 +00:00
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return i2c_add_driver(&wis_tw9903_driver);
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2008-02-16 00:53:09 +00:00
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}
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static void __exit wis_tw9903_cleanup(void)
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{
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i2c_del_driver(&wis_tw9903_driver);
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}
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module_init(wis_tw9903_init);
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module_exit(wis_tw9903_cleanup);
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MODULE_LICENSE("GPL v2");
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