7400516ab4
Move the go7007 driver away from the legacy i2c binding model, which is going away really soon now. The I2C addresses of the audio and video chips in s2250-board didn't look quite right, apparently they were left-aligned values when Linux wants right-aligned values, so I fixed them too. Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: Greg Kroah-Hartman <gregkh@suse.de>
359 lines
7.7 KiB
C
359 lines
7.7 KiB
C
/*
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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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#include <linux/videodev2.h>
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#include <linux/ioctl.h>
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#include "wis-i2c.h"
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struct wis_tw2804 {
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int channel;
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int norm;
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int brightness;
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int contrast;
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int saturation;
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int hue;
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};
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static u8 global_registers[] =
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{
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0x39, 0x00,
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0x3a, 0xff,
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0x3b, 0x84,
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0x3c, 0x80,
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0x3d, 0x80,
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0x3e, 0x82,
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0x3f, 0x82,
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0xff, 0xff, /* Terminator (reg 0xff does not exist) */
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};
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static u8 channel_registers[] =
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{
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0x01, 0xc4,
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0x02, 0xa5,
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0x03, 0x20,
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0x04, 0xd0,
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0x05, 0x20,
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0x06, 0xd0,
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0x07, 0x88,
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0x08, 0x20,
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0x09, 0x07,
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0x0a, 0xf0,
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0x0b, 0x07,
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0x0c, 0xf0,
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0x0d, 0x40,
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0x0e, 0xd2,
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0x0f, 0x80,
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0x10, 0x80,
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0x11, 0x80,
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0x12, 0x80,
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0x13, 0x1f,
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0x14, 0x00,
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0x15, 0x00,
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0x16, 0x00,
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0x17, 0x00,
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0x18, 0xff,
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0x19, 0xff,
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0x1a, 0xff,
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0x1b, 0xff,
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0x1c, 0xff,
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0x1d, 0xff,
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0x1e, 0xff,
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0x1f, 0xff,
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0x20, 0x07,
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0x21, 0x07,
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0x22, 0x00,
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0x23, 0x91,
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0x24, 0x51,
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0x25, 0x03,
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0x26, 0x00,
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0x27, 0x00,
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0x28, 0x00,
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0x29, 0x00,
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0x2a, 0x00,
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0x2b, 0x00,
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0x2c, 0x00,
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0x2d, 0x00,
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0x2e, 0x00,
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0x2f, 0x00,
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0x30, 0x00,
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0x31, 0x00,
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0x32, 0x00,
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0x33, 0x00,
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0x34, 0x00,
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0x35, 0x00,
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0x36, 0x00,
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0x37, 0x00,
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0xff, 0xff, /* Terminator (reg 0xff does not exist) */
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};
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static int write_reg(struct i2c_client *client, u8 reg, u8 value, int channel)
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{
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return i2c_smbus_write_byte_data(client, reg | (channel << 6), value);
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}
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static int write_regs(struct i2c_client *client, u8 *regs, int channel)
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{
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int i;
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for (i = 0; regs[i] != 0xff; i += 2)
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if (i2c_smbus_write_byte_data(client,
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regs[i] | (channel << 6), 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_tw2804_command(struct i2c_client *client,
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unsigned int cmd, void *arg)
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{
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struct wis_tw2804 *dec = i2c_get_clientdata(client);
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if (cmd == DECODER_SET_CHANNEL) {
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int *input = arg;
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if (*input < 0 || *input > 3) {
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printk(KERN_ERR "wis-tw2804: channel %d is not "
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"between 0 and 3!\n", *input);
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return 0;
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}
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dec->channel = *input;
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printk(KERN_DEBUG "wis-tw2804: initializing TW2804 "
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"channel %d\n", dec->channel);
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if (dec->channel == 0 &&
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write_regs(client, global_registers, 0) < 0) {
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printk(KERN_ERR "wis-tw2804: error initializing "
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"TW2804 global registers\n");
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return 0;
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}
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if (write_regs(client, channel_registers, dec->channel) < 0) {
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printk(KERN_ERR "wis-tw2804: error initializing "
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"TW2804 channel %d\n", dec->channel);
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return 0;
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}
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return 0;
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}
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if (dec->channel < 0) {
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printk(KERN_DEBUG "wis-tw2804: ignoring command %08x until "
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"channel number is set\n", cmd);
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return 0;
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}
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switch (cmd) {
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case VIDIOC_S_STD:
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{
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v4l2_std_id *input = arg;
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u8 regs[] = {
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0x01, *input & V4L2_STD_NTSC ? 0xc4 : 0x84,
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0x09, *input & V4L2_STD_NTSC ? 0x07 : 0x04,
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0x0a, *input & V4L2_STD_NTSC ? 0xf0 : 0x20,
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0x0b, *input & V4L2_STD_NTSC ? 0x07 : 0x04,
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0x0c, *input & V4L2_STD_NTSC ? 0xf0 : 0x20,
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0x0d, *input & V4L2_STD_NTSC ? 0x40 : 0x4a,
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0x16, *input & V4L2_STD_NTSC ? 0x00 : 0x40,
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0x17, *input & V4L2_STD_NTSC ? 0x00 : 0x40,
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0x20, *input & V4L2_STD_NTSC ? 0x07 : 0x0f,
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0x21, *input & V4L2_STD_NTSC ? 0x07 : 0x0f,
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0xff, 0xff,
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};
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write_regs(client, regs, dec->channel);
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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 = 0;
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ctrl->maximum = 255;
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ctrl->step = 1;
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ctrl->default_value = 128;
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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 = 128;
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ctrl->flags = 0;
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break;
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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 = 255;
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ctrl->step = 1;
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ctrl->default_value = 128;
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ctrl->flags = 0;
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break;
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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 = 0;
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ctrl->maximum = 255;
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ctrl->step = 1;
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ctrl->default_value = 128;
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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 > 255)
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dec->brightness = 255;
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else if (ctrl->value < 0)
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dec->brightness = 0;
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else
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dec->brightness = ctrl->value;
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write_reg(client, 0x12, dec->brightness, dec->channel);
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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, dec->channel);
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break;
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case V4L2_CID_SATURATION:
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if (ctrl->value > 255)
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dec->saturation = 255;
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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, 0x10, dec->saturation, dec->channel);
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break;
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case V4L2_CID_HUE:
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if (ctrl->value > 255)
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dec->hue = 255;
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else if (ctrl->value < 0)
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dec->hue = 0;
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else
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dec->hue = ctrl->value;
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write_reg(client, 0x0f, dec->hue, dec->channel);
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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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case V4L2_CID_SATURATION:
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ctrl->value = dec->saturation;
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break;
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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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static int wis_tw2804_probe(struct i2c_client *client,
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const struct i2c_device_id *id)
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{
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struct i2c_adapter *adapter = client->adapter;
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struct wis_tw2804 *dec;
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if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
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return -ENODEV;
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dec = kmalloc(sizeof(struct wis_tw2804), GFP_KERNEL);
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if (dec == NULL)
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return -ENOMEM;
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dec->channel = -1;
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dec->norm = V4L2_STD_NTSC;
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dec->brightness = 128;
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dec->contrast = 128;
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dec->saturation = 128;
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dec->hue = 128;
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i2c_set_clientdata(client, dec);
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printk(KERN_DEBUG "wis-tw2804: creating TW2804 at address %d on %s\n",
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client->addr, adapter->name);
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return 0;
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}
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static int wis_tw2804_remove(struct i2c_client *client)
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{
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struct wis_tw2804 *dec = i2c_get_clientdata(client);
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i2c_set_clientdata(client, NULL);
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kfree(dec);
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return 0;
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}
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static struct i2c_device_id wis_tw2804_id[] = {
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{ "wis_tw2804", 0 },
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{ }
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};
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static struct i2c_driver wis_tw2804_driver = {
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.driver = {
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.name = "WIS TW2804 I2C driver",
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},
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.probe = wis_tw2804_probe,
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.remove = wis_tw2804_remove,
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.command = wis_tw2804_command,
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.id_table = wis_tw2804_id,
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};
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static int __init wis_tw2804_init(void)
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{
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return i2c_add_driver(&wis_tw2804_driver);
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}
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static void __exit wis_tw2804_cleanup(void)
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{
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i2c_del_driver(&wis_tw2804_driver);
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}
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module_init(wis_tw2804_init);
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module_exit(wis_tw2804_cleanup);
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MODULE_LICENSE("GPL v2");
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