V4L/DVB (7535): saa717x: add new audio/video decoder i2c driver

Added the last remaining out-of-tree kernel driver from the ivtv project.
The saa717x is used in several Japanese cards and a Russian card. The
driver is not complete in that only NTSC is supported and no PAL/SECAM.

Hopefully this will be added in the future.

Signed-off-by: Takahiro Adachi <tadachi@tadachi-net.com>
Signed-off-by: Kyuma Ohta <whatisthis@jcom.home.ne.jp>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

1 files changed, 1516 insertions, 0 deletions

diff --git a/drivers/media/video/saa717x.c b/drivers/media/video/saa717x.c
new file mode 100644
index 0000000..53c5edb
--- /dev/null
+++ b/drivers/media/video/saa717x.c
@@ -0,0 +1,1516 @@
+/*
+ * saa717x - Philips SAA717xHL video decoder driver
+ *
+ * Based on the saa7115 driver
+ *
+ * Changes by Ohta Kyuma <alpha292@bremen.or.jp>
+ *    - Apply to SAA717x,NEC uPD64031,uPD64083. (1/31/2004)
+ *
+ * Changes by T.Adachi (tadachi@tadachi-net.com)
+ *    - support audio, video scaler etc, and checked the initialize sequence.
+ *
+ * Cleaned up by Hans Verkuil <hverkuil@xs4all.nl>
+ *
+ * Note: this is a reversed engineered driver based on captures from
+ * the I2C bus under Windows. This chip is very similar to the saa7134,
+ * though. Unfortunately, this driver is currently only working for NTSC.
+ *
+ * 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/version.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+
+#include <linux/videodev.h>
+#include <linux/videodev2.h>
+#include <linux/i2c.h>
+#include <media/v4l2-common.h>
+#include <media/v4l2-i2c-drv.h>
+
+MODULE_DESCRIPTION("Philips SAA717x audio/video decoder driver");
+MODULE_AUTHOR("K. Ohta, T. Adachi, Hans Verkuil");
+MODULE_LICENSE("GPL");
+
+static int debug;
+module_param(debug, int, 0644);
+MODULE_PARM_DESC(debug, "Debug level (0-1)");
+
+/*
+ * Generic i2c probe
+ * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1'
+ */
+
+struct saa717x_state {
+	v4l2_std_id std;
+	int input;
+	int enable;
+	int radio;
+	int bright;
+	int contrast;
+	int hue;
+	int sat;
+	int playback;
+	int audio;
+	int tuner_audio_mode;
+	int audio_main_mute;
+	int audio_main_vol_r;
+	int audio_main_vol_l;
+	u16 audio_main_bass;
+	u16 audio_main_treble;
+	u16 audio_main_volume;
+	u16 audio_main_balance;
+	int audio_input;
+};
+
+/* ----------------------------------------------------------------------- */
+
+/* for audio mode */
+#define TUNER_AUDIO_MONO   	0  /* LL */
+#define TUNER_AUDIO_STEREO 	1  /* LR */
+#define TUNER_AUDIO_LANG1  	2  /* LL */
+#define TUNER_AUDIO_LANG2  	3  /* RR */
+
+#define SAA717X_NTSC_WIDTH   	(704)
+#define SAA717X_NTSC_HEIGHT  	(480)
+
+/* ----------------------------------------------------------------------- */
+
+static int saa717x_write(struct i2c_client *client, u32 reg, u32 value)
+{
+	struct i2c_adapter *adap = client->adapter;
+	int fw_addr = reg == 0x454 || (reg >= 0x464 && reg <= 0x478) || reg == 0x480 || reg == 0x488;
+	unsigned char mm1[6];
+	struct i2c_msg msg;
+
+	msg.flags = 0;
+	msg.addr = client->addr;
+	mm1[0] = (reg >> 8) & 0xff;
+	mm1[1] = reg & 0xff;
+
+	if (fw_addr) {
+		mm1[4] = (value >> 16) & 0xff;
+		mm1[3] = (value >> 8) & 0xff;
+		mm1[2] = value & 0xff;
+	} else {
+		mm1[2] = value & 0xff;
+	}
+	msg.len = fw_addr ? 5 : 3; /* Long Registers have *only* three bytes! */
+	msg.buf = mm1;
+	v4l_dbg(2, debug, client, "wrote:  reg 0x%03x=%08x\n", reg, value);
+	return i2c_transfer(adap, &msg, 1) == 1;
+}
+
+static void saa717x_write_regs(struct i2c_client *client, u32 *data)
+{
+	while (data[0] || data[1]) {
+		saa717x_write(client, data[0], data[1]);
+		data += 2;
+	}
+}
+
+static u32 saa717x_read(struct i2c_client *client, u32 reg)
+{
+	struct i2c_adapter *adap = client->adapter;
+	int fw_addr = (reg >= 0x404 && reg <= 0x4b8) || reg == 0x528;
+	unsigned char mm1[2];
+	unsigned char mm2[4] = { 0, 0, 0, 0 };
+	struct i2c_msg msgs[2];
+	u32 value;
+
+	msgs[0].flags = 0;
+	msgs[1].flags = I2C_M_RD;
+	msgs[0].addr = msgs[1].addr = client->addr;
+	mm1[0] = (reg >> 8) & 0xff;
+	mm1[1] = reg & 0xff;
+	msgs[0].len = 2;
+	msgs[0].buf = mm1;
+	msgs[1].len = fw_addr ? 3 : 1; /* Multibyte Registers contains *only* 3 bytes */
+	msgs[1].buf = mm2;
+	i2c_transfer(adap, msgs, 2);
+
+	if (fw_addr)
+		value = (mm2[2] & 0xff)  | ((mm2[1] & 0xff) >> 8) | ((mm2[0] & 0xff) >> 16);
+	else
+		value = mm2[0] & 0xff;
+
+	v4l_dbg(2, debug, client, "read:  reg 0x%03x=0x%08x\n", reg, value);
+	return value;
+}
+
+/* ----------------------------------------------------------------------- */
+
+static u32 reg_init_initialize[] =
+{
+	/* from linux driver */
+	0x101, 0x008, /* Increment delay */
+
+	0x103, 0x000, /* Analog input control 2 */
+	0x104, 0x090, /* Analog input control 3 */
+	0x105, 0x090, /* Analog input control 4 */
+	0x106, 0x0eb, /* Horizontal sync start */
+	0x107, 0x0e0, /* Horizontal sync stop */
+	0x109, 0x055, /* Luminance control */
+
+	0x10f, 0x02a, /* Chroma gain control */
+	0x110, 0x000, /* Chroma control 2 */
+
+	0x114, 0x045, /* analog/ADC */
+
+	0x118, 0x040, /* RAW data gain */
+	0x119, 0x080, /* RAW data offset */
+
+	0x044, 0x000, /* VBI horizontal input window start (L) TASK A */
+	0x045, 0x000, /* VBI horizontal input window start (H) TASK A */
+	0x046, 0x0cf, /* VBI horizontal input window stop (L) TASK A */
+	0x047, 0x002, /* VBI horizontal input window stop (H) TASK A */
+
+	0x049, 0x000, /* VBI vertical input window start (H) TASK A */
+
+	0x04c, 0x0d0, /* VBI horizontal output length (L) TASK A */
+	0x04d, 0x002, /* VBI horizontal output length (H) TASK A */
+
+	0x064, 0x080, /* Lumina brightness TASK A */
+	0x065, 0x040, /* Luminance contrast TASK A */
+	0x066, 0x040, /* Chroma saturation TASK A */
+	/* 067H: Reserved */
+	0x068, 0x000, /* VBI horizontal scaling increment (L) TASK A */
+	0x069, 0x004, /* VBI horizontal scaling increment (H) TASK A */
+	0x06a, 0x000, /* VBI phase offset TASK A */
+
+	0x06e, 0x000, /* Horizontal phase offset Luma TASK A */
+	0x06f, 0x000, /* Horizontal phase offset Chroma TASK A */
+
+	0x072, 0x000, /* Vertical filter mode TASK A */
+
+	0x084, 0x000, /* VBI horizontal input window start (L) TAKS B */
+	0x085, 0x000, /* VBI horizontal input window start (H) TAKS B */
+	0x086, 0x0cf, /* VBI horizontal input window stop (L) TAKS B */
+	0x087, 0x002, /* VBI horizontal input window stop (H) TAKS B */
+
+	0x089, 0x000, /* VBI vertical input window start (H) TAKS B */
+
+	0x08c, 0x0d0, /* VBI horizontal output length (L) TASK B */
+	0x08d, 0x002, /* VBI horizontal output length (H) TASK B */
+
+	0x0a4, 0x080, /* Lumina brightness TASK B */
+	0x0a5, 0x040, /* Luminance contrast TASK B */
+	0x0a6, 0x040, /* Chroma saturation TASK B */
+	/* 0A7H reserved */
+	0x0a8, 0x000, /* VBI horizontal scaling increment (L) TASK B */
+	0x0a9, 0x004, /* VBI horizontal scaling increment (H) TASK B */
+	0x0aa, 0x000, /* VBI phase offset TASK B */
+
+	0x0ae, 0x000, /* Horizontal phase offset Luma TASK B */
+	0x0af, 0x000, /*Horizontal phase offset Chroma TASK B */
+
+	0x0b2, 0x000, /* Vertical filter mode TASK B */
+
+	0x00c, 0x000, /* Start point GREEN path */
+	0x00d, 0x000, /* Start point BLUE path */
+	0x00e, 0x000, /* Start point RED path */
+
+	0x010, 0x010, /* GREEN path gamma curve --- */
+	0x011, 0x020,
+	0x012, 0x030,
+	0x013, 0x040,
+	0x014, 0x050,
+	0x015, 0x060,
+	0x016, 0x070,
+	0x017, 0x080,
+	0x018, 0x090,
+	0x019, 0x0a0,
+	0x01a, 0x0b0,
+	0x01b, 0x0c0,
+	0x01c, 0x0d0,
+	0x01d, 0x0e0,
+	0x01e, 0x0f0,
+	0x01f, 0x0ff, /* --- GREEN path gamma curve */
+
+	0x020, 0x010, /* BLUE path gamma curve --- */
+	0x021, 0x020,
+	0x022, 0x030,
+	0x023, 0x040,
+	0x024, 0x050,
+	0x025, 0x060,
+	0x026, 0x070,
+	0x027, 0x080,
+	0x028, 0x090,
+	0x029, 0x0a0,
+	0x02a, 0x0b0,
+	0x02b, 0x0c0,
+	0x02c, 0x0d0,
+	0x02d, 0x0e0,
+	0x02e, 0x0f0,
+	0x02f, 0x0ff, /* --- BLUE path gamma curve */
+
+	0x030, 0x010, /* RED path gamma curve --- */
+	0x031, 0x020,
+	0x032, 0x030,
+	0x033, 0x040,
+	0x034, 0x050,
+	0x035, 0x060,
+	0x036, 0x070,
+	0x037, 0x080,
+	0x038, 0x090,
+	0x039, 0x0a0,
+	0x03a, 0x0b0,
+	0x03b, 0x0c0,
+	0x03c, 0x0d0,
+	0x03d, 0x0e0,
+	0x03e, 0x0f0,
+	0x03f, 0x0ff, /* --- RED path gamma curve */
+
+	0x109, 0x085, /* Luminance control  */
+
+	/**** from app start ****/
+	0x584, 0x000, /* AGC gain control */
+	0x585, 0x000, /* Program count */
+	0x586, 0x003, /* Status reset */
+	0x588, 0x0ff, /* Number of audio samples (L) */
+	0x589, 0x00f, /* Number of audio samples (M) */
+	0x58a, 0x000, /* Number of audio samples (H) */
+	0x58b, 0x000, /* Audio select */
+	0x58c, 0x010, /* Audio channel assign1 */
+	0x58d, 0x032, /* Audio channel assign2 */
+	0x58e, 0x054, /* Audio channel assign3 */
+	0x58f, 0x023, /* Audio format */
+	0x590, 0x000, /* SIF control */
+
+	0x595, 0x000, /* ?? */
+	0x596, 0x000, /* ?? */
+	0x597, 0x000, /* ?? */
+
+	0x464, 0x00, /* Digital input crossbar1 */
+
+	0x46c, 0xbbbb10, /* Digital output selection1-3 */
+	0x470, 0x101010, /* Digital output selection4-6 */
+
+	0x478, 0x00, /* Sound feature control */
+
+	0x474, 0x18, /* Softmute control */
+
+	0x454, 0x0425b9, /* Sound Easy programming(reset) */
+	0x454, 0x042539, /* Sound Easy programming(reset) */
+
+
+	/**** common setting( of DVD play, including scaler commands) ****/
+	0x042, 0x003, /* Data path configuration for VBI (TASK A) */
+
+	0x082, 0x003, /* Data path configuration for VBI (TASK B) */
+
+	0x108, 0x0f8, /* Sync control */
+	0x2a9, 0x0fd, /* ??? */
+	0x102, 0x089, /* select video input "mode 9" */
+	0x111, 0x000, /* Mode/delay control */
+
+	0x10e, 0x00a, /* Chroma control 1 */
+
+	0x594, 0x002, /* SIF, analog I/O select */
+
+	0x454, 0x0425b9, /* Sound  */
+	0x454, 0x042539,
+
+	0x111, 0x000,
+	0x10e, 0x00a,
+	0x464, 0x000,
+	0x300, 0x000,
+	0x301, 0x006,
+	0x302, 0x000,
+	0x303, 0x006,
+	0x308, 0x040,
+	0x309, 0x000,
+	0x30a, 0x000,
+	0x30b, 0x000,
+	0x000, 0x002,
+	0x001, 0x000,
+	0x002, 0x000,
+	0x003, 0x000,
+	0x004, 0x033,
+	0x040, 0x01d,
+	0x041, 0x001,
+	0x042, 0x004,
+	0x043, 0x000,
+	0x080, 0x01e,
+	0x081, 0x001,
+	0x082, 0x004,
+	0x083, 0x000,
+	0x190, 0x018,
+	0x115, 0x000,
+	0x116, 0x012,
+	0x117, 0x018,
+	0x04a, 0x011,
+	0x08a, 0x011,
+	0x04b, 0x000,
+	0x08b, 0x000,
+	0x048, 0x000,
+	0x088, 0x000,
+	0x04e, 0x012,
+	0x08e, 0x012,
+	0x058, 0x012,
+	0x098, 0x012,
+	0x059, 0x000,
+	0x099, 0x000,
+	0x05a, 0x003,
+	0x09a, 0x003,
+	0x05b, 0x001,
+	0x09b, 0x001,
+	0x054, 0x008,
+	0x094, 0x008,
+	0x055, 0x000,
+	0x095, 0x000,
+	0x056, 0x0c7,
+	0x096, 0x0c7,
+	0x057, 0x002,
+	0x097, 0x002,
+	0x0ff, 0x0ff,
+	0x060, 0x001,
+	0x0a0, 0x001,
+	0x061, 0x000,
+	0x0a1, 0x000,
+	0x062, 0x000,
+	0x0a2, 0x000,
+	0x063, 0x000,
+	0x0a3, 0x000,
+	0x070, 0x000,
+	0x0b0, 0x000,
+	0x071, 0x004,
+	0x0b1, 0x004,
+	0x06c, 0x0e9,
+	0x0ac, 0x0e9,
+	0x06d, 0x003,
+	0x0ad, 0x003,
+	0x05c, 0x0d0,
+	0x09c, 0x0d0,
+	0x05d, 0x002,
+	0x09d, 0x002,
+	0x05e, 0x0f2,
+	0x09e, 0x0f2,
+	0x05f, 0x000,
+	0x09f, 0x000,
+	0x074, 0x000,
+	0x0b4, 0x000,
+	0x075, 0x000,
+	0x0b5, 0x000,
+	0x076, 0x000,
+	0x0b6, 0x000,
+	0x077, 0x000,
+	0x0b7, 0x000,
+	0x195, 0x008,
+	0x0ff, 0x0ff,
+	0x108, 0x0f8,
+	0x111, 0x000,
+	0x10e, 0x00a,
+	0x2a9, 0x0fd,
+	0x464, 0x001,
+	0x454, 0x042135,
+	0x598, 0x0e7,
+	0x599, 0x07d,
+	0x59a, 0x018,
+	0x59c, 0x066,
+	0x59d, 0x090,
+	0x59e, 0x001,
+	0x584, 0x000,
+	0x585, 0x000,
+	0x586, 0x003,
+	0x588, 0x0ff,
+	0x589, 0x00f,
+	0x58a, 0x000,
+	0x58b, 0x000,
+	0x58c, 0x010,
+	0x58d, 0x032,
+	0x58e, 0x054,
+	0x58f, 0x023,
+	0x590, 0x000,
+	0x595, 0x000,
+	0x596, 0x000,
+	0x597, 0x000,
+	0x464, 0x000,
+	0x46c, 0xbbbb10,
+	0x470, 0x101010,
+
+
+	0x478, 0x000,
+	0x474, 0x018,
+	0x454, 0x042135,
+	0x598, 0x0e7,
+	0x599, 0x07d,
+	0x59a, 0x018,
+	0x59c, 0x066,
+	0x59d, 0x090,
+	0x59e, 0x001,
+	0x584, 0x000,
+	0x585, 0x000,
+	0x586, 0x003,
+	0x588, 0x0ff,
+	0x589, 0x00f,
+	0x58a, 0x000,
+	0x58b, 0x000,
+	0x58c, 0x010,
+	0x58d, 0x032,
+	0x58e, 0x054,
+	0x58f, 0x023,
+	0x590, 0x000,
+	0x595, 0x000,
+	0x596, 0x000,
+	0x597, 0x000,
+	0x464, 0x000,
+	0x46c, 0xbbbb10,
+	0x470, 0x101010,
+
+	0x478, 0x000,
+	0x474, 0x018,
+	0x454, 0x042135,
+	0x598, 0x0e7,
+	0x599, 0x07d,
+	0x59a, 0x018,
+	0x59c, 0x066,
+	0x59d, 0x090,
+	0x59e, 0x001,
+	0x584, 0x000,
+	0x585, 0x000,
+	0x586, 0x003,
+	0x588, 0x0ff,
+	0x589, 0x00f,
+	0x58a, 0x000,
+	0x58b, 0x000,
+	0x58c, 0x010,
+	0x58d, 0x032,
+	0x58e, 0x054,
+	0x58f, 0x023,
+	0x590, 0x000,
+	0x595, 0x000,
+	0x596, 0x000,
+	0x597, 0x000,
+	0x464, 0x000,
+	0x46c, 0xbbbb10,
+	0x470, 0x101010,
+	0x478, 0x000,
+	0x474, 0x018,
+	0x454, 0x042135,
+	0x193, 0x000,
+	0x300, 0x000,
+	0x301, 0x006,
+	0x302, 0x000,
+	0x303, 0x006,
+	0x308, 0x040,
+	0x309, 0x000,
+	0x30a, 0x000,
+	0x30b, 0x000,
+	0x000, 0x002,
+	0x001, 0x000,
+	0x002, 0x000,
+	0x003, 0x000,
+	0x004, 0x033,
+	0x040, 0x01d,
+	0x041, 0x001,
+	0x042, 0x004,
+	0x043, 0x000,
+	0x080, 0x01e,
+	0x081, 0x001,
+	0x082, 0x004,
+	0x083, 0x000,
+	0x190, 0x018,
+	0x115, 0x000,
+	0x116, 0x012,
+	0x117, 0x018,
+	0x04a, 0x011,
+	0x08a, 0x011,
+	0x04b, 0x000,
+	0x08b, 0x000,
+	0x048, 0x000,
+	0x088, 0x000,
+	0x04e, 0x012,
+	0x08e, 0x012,
+	0x058, 0x012,
+	0x098, 0x012,
+	0x059, 0x000,
+	0x099, 0x000,
+	0x05a, 0x003,
+	0x09a, 0x003,
+	0x05b, 0x001,
+	0x09b, 0x001,
+	0x054, 0x008,
+	0x094, 0x008,
+	0x055, 0x000,
+	0x095, 0x000,
+	0x056, 0x0c7,
+	0x096, 0x0c7,
+	0x057, 0x002,
+	0x097, 0x002,
+	0x060, 0x001,
+	0x0a0, 0x001,
+	0x061, 0x000,
+	0x0a1, 0x000,
+	0x062, 0x000,
+	0x0a2, 0x000,
+	0x063, 0x000,
+	0x0a3, 0x000,
+	0x070, 0x000,
+	0x0b0, 0x000,
+	0x071, 0x004,
+	0x0b1, 0x004,
+	0x06c, 0x0e9,
+	0x0ac, 0x0e9,
+	0x06d, 0x003,
+	0x0ad, 0x003,
+	0x05c, 0x0d0,
+	0x09c, 0x0d0,
+	0x05d, 0x002,
+	0x09d, 0x002,
+	0x05e, 0x0f2,
+	0x09e, 0x0f2,
+	0x05f, 0x000,
+	0x09f, 0x000,
+	0x074, 0x000,
+	0x0b4, 0x000,
+	0x075, 0x000,
+	0x0b5, 0x000,
+	0x076, 0x000,
+	0x0b6, 0x000,
+	0x077, 0x000,
+	0x0b7, 0x000,
+	0x195, 0x008,
+	0x598, 0x0e7,
+	0x599, 0x07d,
+	0x59a, 0x018,
+	0x59c, 0x066,
+	0x59d, 0x090,
+	0x59e, 0x001,
+	0x584, 0x000,
+	0x585, 0x000,
+	0x586, 0x003,
+	0x588, 0x0ff,
+	0x589, 0x00f,
+	0x58a, 0x000,
+	0x58b, 0x000,
+	0x58c, 0x010,
+	0x58d, 0x032,
+	0x58e, 0x054,
+	0x58f, 0x023,
+	0x590, 0x000,
+	0x595, 0x000,
+	0x596, 0x000,
+	0x597, 0x000,
+	0x464, 0x000,
+	0x46c, 0xbbbb10,
+	0x470, 0x101010,
+	0x478, 0x000,
+	0x474, 0x018,
+	0x454, 0x042135,
+	0x193, 0x0a6,
+	0x108, 0x0f8,
+	0x042, 0x003,
+	0x082, 0x003,
+	0x454, 0x0425b9,
+	0x454, 0x042539,
+	0x193, 0x000,
+	0x193, 0x0a6,
+	0x464, 0x000,
+
+	0, 0
+};
+
+/* Tuner */
+static u32 reg_init_tuner_input[] = {
+	0x108, 0x0f8, /* Sync control */
+	0x111, 0x000, /* Mode/delay control */
+	0x10e, 0x00a, /* Chroma control 1 */
+	0, 0
+};
+
+/* Composite */
+static u32 reg_init_composite_input[] = {
+	0x108, 0x0e8, /* Sync control */
+	0x111, 0x000, /* Mode/delay control */
+	0x10e, 0x04a, /* Chroma control 1 */
+	0, 0
+};
+
+/* S-Video */
+static u32 reg_init_svideo_input[] = {
+	0x108, 0x0e8, /* Sync control */
+	0x111, 0x000, /* Mode/delay control */
+	0x10e, 0x04a, /* Chroma control 1 */
+	0, 0
+};
+
+static u32 reg_set_audio_template[4][2] =
+{
+	{ /* for MONO
+		tadachi 6/29 DMA audio output select?
+		Register 0x46c
+		7-4: DMA2, 3-0: DMA1 ch. DMA4, DMA3 DMA2, DMA1
+		0: MAIN left,  1: MAIN right
+		2: AUX1 left,  3: AUX1 right
+		4: AUX2 left,  5: AUX2 right
+		6: DPL left,   7: DPL  right
+		8: DPL center, 9: DPL surround
+		A: monitor output, B: digital sense */
+		0xbbbb00,
+
+		/* tadachi 6/29 DAC and I2S output select?
+		   Register 0x470
+		   7-4:DAC right ch. 3-0:DAC left ch.
+		   I2S1 right,left  I2S2 right,left */
+		0x00,
+	},
+	{ /* for STEREO */
+		0xbbbb10, 0x101010,
+	},
+	{ /* for LANG1 */
+		0xbbbb00, 0x00,
+	},
+	{ /* for LANG2/SAP */
+		0xbbbb11, 0x111111,
+	}
+};
+
+
+/* Get detected audio flags (from saa7134 driver) */
+static void get_inf_dev_status(struct i2c_client *client,
+		int *dual_flag, int *stereo_flag)
+{
+	u32 reg_data3;
+
+	static char *stdres[0x20] = {
+		[0x00] = "no standard detected",
+		[0x01] = "B/G (in progress)",
+		[0x02] = "D/K (in progress)",
+		[0x03] = "M (in progress)",
+
+		[0x04] = "B/G A2",
+		[0x05] = "B/G NICAM",
+		[0x06] = "D/K A2 (1)",
+		[0x07] = "D/K A2 (2)",
+		[0x08] = "D/K A2 (3)",
+		[0x09] = "D/K NICAM",
+		[0x0a] = "L NICAM",
+		[0x0b] = "I NICAM",
+
+		[0x0c] = "M Korea",
+		[0x0d] = "M BTSC ",
+		[0x0e] = "M EIAJ",
+
+		[0x0f] = "FM radio / IF 10.7 / 50 deemp",
+		[0x10] = "FM radio / IF 10.7 / 75 deemp",
+		[0x11] = "FM radio / IF sel / 50 deemp",
+		[0x12] = "FM radio / IF sel / 75 deemp",
+
+		[0x13 ... 0x1e] = "unknown",
+		[0x1f] = "??? [in progress]",
+	};
+
+
+	*dual_flag = *stereo_flag = 0;
+
+	/* (demdec status: 0x528) */
+
+	/* read current status */
+	reg_data3 = saa717x_read(client, 0x0528);
+
+	v4l_dbg(1, debug, client, "tvaudio thread status: 0x%x [%s%s%s]\n",
+		reg_data3, stdres[reg_data3 & 0x1f],
+		(reg_data3 & 0x000020) ? ",stereo" : "",
+		(reg_data3 & 0x000040) ? ",dual"   : "");
+	v4l_dbg(1, debug, client, "detailed status: "
+		"%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s\n",
+		(reg_data3 & 0x000080) ? " A2/EIAJ pilot tone "     : "",
+		(reg_data3 & 0x000100) ? " A2/EIAJ dual "           : "",
+		(reg_data3 & 0x000200) ? " A2/EIAJ stereo "         : "",
+		(reg_data3 & 0x000400) ? " A2/EIAJ noise mute "     : "",
+
+		(reg_data3 & 0x000800) ? " BTSC/FM radio pilot "    : "",
+		(reg_data3 & 0x001000) ? " SAP carrier "            : "",
+		(reg_data3 & 0x002000) ? " BTSC stereo noise mute " : "",
+		(reg_data3 & 0x004000) ? " SAP noise mute "         : "",
+		(reg_data3 & 0x008000) ? " VDSP "                   : "",
+
+		(reg_data3 & 0x010000) ? " NICST "                  : "",
+		(reg_data3 & 0x020000) ? " NICDU "                  : "",
+		(reg_data3 & 0x040000) ? " NICAM muted "            : "",
+		(reg_data3 & 0x080000) ? " NICAM reserve sound "    : "",
+
+		(reg_data3 & 0x100000) ? " init done "              : "");
+
+	if (reg_data3 & 0x000220) {
+		v4l_dbg(1, debug, client, "ST!!!\n");
+		*stereo_flag = 1;
+	}
+
+	if (reg_data3 & 0x000140) {
+		v4l_dbg(1, debug, client, "DUAL!!!\n");
+		*dual_flag = 1;
+	}
+}
+
+/* regs write to set audio mode */
+static void set_audio_mode(struct i2c_client *client, int audio_mode)
+{
+	v4l_dbg(1, debug, client, "writing registers to set audio mode by set %d\n",
+			audio_mode);
+
+	saa717x_write(client, 0x46c, reg_set_audio_template[audio_mode][0]);
+	saa717x_write(client, 0x470, reg_set_audio_template[audio_mode][1]);
+}
+
+/* write regs to video output level (bright,contrast,hue,sat) */
+static void set_video_output_level_regs(struct i2c_client *client,
+		struct saa717x_state *decoder)
+{
+	/* brightness ffh (bright) - 80h (ITU level) - 00h (dark) */
+	saa717x_write(client, 0x10a, decoder->bright);
+
+	/* contrast 7fh (max: 1.984) - 44h (ITU) - 40h (1.0) -
+	   0h (luminance off) 40: i2c dump
+	   c0h (-1.0 inverse chrominance)
+	   80h (-2.0 inverse chrominance) */
+	saa717x_write(client, 0x10b, decoder->contrast);
+
+	/* saturation? 7fh(max)-40h(ITU)-0h(color off)
+	   c0h (-1.0 inverse chrominance)
+	   80h (-2.0 inverse chrominance) */
+	saa717x_write(client, 0x10c, decoder->sat);
+
+	/* color hue (phase) control
+	   7fh (+178.6) - 0h (0 normal) - 80h (-180.0) */
+	saa717x_write(client, 0x10d, decoder->hue);
+}
+
+/* write regs to set audio volume, bass and treble */
+static int set_audio_regs(struct i2c_client *client,
+		struct saa717x_state *decoder)
+{
+	u8 mute = 0xac; /* -84 dB */
+	u32 val;
+	unsigned int work_l, work_r;
+
+	/* set SIF analog I/O select */
+	saa717x_write(client, 0x0594, decoder->audio_input);
+	v4l_dbg(1, debug, client, "set audio input %d\n",
+			decoder->audio_input);
+
+	/* normalize ( 65535 to 0 -> 24 to -40 (not -84)) */
+	work_l = (min(65536 - decoder->audio_main_balance, 32768) * decoder->audio_main_volume) / 32768;
+	work_r = (min(decoder->audio_main_balance, (u16)32768) * decoder->audio_main_volume) / 32768;
+	decoder->audio_main_vol_l = (long)work_l * (24 - (-40)) / 65535 - 40;
+	decoder->audio_main_vol_r = (long)work_r * (24 - (-40)) / 65535 - 40;
+
+	/* set main volume */
+	/* main volume L[7-0],R[7-0],0x00  24=24dB,-83dB, -84(mute) */
+	/*    def:0dB->6dB(MPG600GR) */
+	/* if mute is on, set mute */
+	if (decoder->audio_main_mute) {
+		val = mute | (mute << 8);
+	} else {
+		val = (u8)decoder->audio_main_vol_l |
+			((u8)decoder->audio_main_vol_r << 8);
+	}
+
+	saa717x_write(client, 0x480, val);
+
+	/* bass and treble; go to another function */
+	/* set bass and treble */
+	val = decoder->audio_main_bass | (decoder->audio_main_treble << 8);
+	saa717x_write(client, 0x488, val);
+	return 0;
+}
+
+/********** scaling staff ***********/
+static void set_h_prescale(struct i2c_client *client,
+		int task, int prescale)
+{
+	static const struct {
+		int xpsc;
+		int xacl;
+		int xc2_1;
+		int xdcg;
+		int vpfy;
+	} vals[] = {
+		/* XPSC XACL XC2_1 XDCG VPFY */
+		{    1,   0,    0,    0,   0 },
+		{    2,   2,    1,    2,   2 },
+		{    3,   4,    1,    3,   2 },
+		{    4,   8,    1,    4,   2 },
+		{    5,   8,    1,    4,   2 },
+		{    6,   8,    1,    4,   3 },
+		{    7,   8,    1,    4,   3 },
+		{    8,  15,    0,    4,   3 },
+		{    9,  15,    0,    4,   3 },
+		{   10,  16,    1,    5,   3 },
+	};
+	static const int count = ARRAY_SIZE(vals);
+	int i, task_shift;
+
+	task_shift = task * 0x40;
+	for (i = 0; i < count; i++)
+		if (vals[i].xpsc == prescale)
+			break;
+	if (i == count)
+		return;
+
+	/* horizonal prescaling */
+	saa717x_write(client, 0x60 + task_shift, vals[i].xpsc);
+	/* accumulation length */
+	saa717x_write(client, 0x61 + task_shift, vals[i].xacl);
+	/* level control */
+	saa717x_write(client, 0x62 + task_shift,
+			(vals[i].xc2_1 << 3) | vals[i].xdcg);
+	/*FIR prefilter control */
+	saa717x_write(client, 0x63 + task_shift,
+			(vals[i].vpfy << 2) | vals[i].vpfy);
+}
+
+/********** scaling staff ***********/
+static void set_v_scale(struct i2c_client *client, int task, int yscale)
+{
+	int task_shift;
+
+	task_shift = task * 0x40;
+	/* Vertical scaling ratio (LOW) */
+	saa717x_write(client, 0x70 + task_shift, yscale & 0xff);
+	/* Vertical scaling ratio (HI) */
+	saa717x_write(client, 0x71 + task_shift, yscale >> 8);
+}
+
+static int saa717x_set_audio_clock_freq(struct i2c_client *client, u32 freq)
+{
+	/* not yet implament, so saa717x_cfg_??hz_??_audio is not defined. */
+	return 0;
+}
+
+static int saa717x_set_v4lctrl(struct i2c_client *client, struct v4l2_control *ctrl)
+{
+	struct saa717x_state *state = i2c_get_clientdata(client);
+
+	switch (ctrl->id) {
+	case V4L2_CID_BRIGHTNESS:
+		if (ctrl->value < 0 || ctrl->value > 255) {
+			v4l_err(client, "invalid brightness setting %d\n", ctrl->value);
+			return -ERANGE;
+		}
+
+		state->bright = ctrl->value;
+		v4l_dbg(1, debug, client, "bright:%d\n", state->bright);
+		saa717x_write(client, 0x10a, state->bright);
+		break;
+
+	case V4L2_CID_CONTRAST:
+		if (ctrl->value < 0 || ctrl->value > 127) {
+			v4l_err(client, "invalid contrast setting %d\n", ctrl->value);
+			return -ERANGE;
+		}
+
+		state->contrast = ctrl->value;
+		v4l_dbg(1, debug, client, "contrast:%d\n", state->contrast);
+		saa717x_write(client, 0x10b, state->contrast);
+		break;
+
+	case V4L2_CID_SATURATION:
+		if (ctrl->value < 0 || ctrl->value > 127) {
+			v4l_err(client, "invalid saturation setting %d\n", ctrl->value);
+			return -ERANGE;
+		}
+
+		state->sat = ctrl->value;
+		v4l_dbg(1, debug, client, "sat:%d\n", state->sat);
+		saa717x_write(client, 0x10c, state->sat);
+		break;
+
+	case V4L2_CID_HUE:
+		if (ctrl->value < -127 || ctrl->value > 127) {
+			v4l_err(client, "invalid hue setting %d\n", ctrl->value);
+			return -ERANGE;
+		}
+
+		state->hue = ctrl->value;
+		v4l_dbg(1, debug, client, "hue:%d\n", state->hue);
+		saa717x_write(client, 0x10d, state->hue);
+		break;
+
+	case V4L2_CID_AUDIO_MUTE:
+		state->audio_main_mute = ctrl->value;
+		set_audio_regs(client, state);
+		break;
+
+	case V4L2_CID_AUDIO_VOLUME:
+		state->audio_main_volume = ctrl->value;
+		set_audio_regs(client, state);
+		break;
+
+	case V4L2_CID_AUDIO_BALANCE:
+		state->audio_main_balance = ctrl->value;
+		set_audio_regs(client, state);
+		break;
+
+	case V4L2_CID_AUDIO_TREBLE:
+		state->audio_main_treble = ctrl->value;
+		set_audio_regs(client, state);
+		break;
+
+	case V4L2_CID_AUDIO_BASS:
+		state->audio_main_bass = ctrl->value;
+		set_audio_regs(client, state);
+		break;
+
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int saa717x_get_v4lctrl(struct i2c_client *client, struct v4l2_control *ctrl)
+{
+	struct saa717x_state *state = i2c_get_clientdata(client);
+
+	switch (ctrl->id) {
+	case V4L2_CID_BRIGHTNESS:
+		ctrl->value = state->bright;
+		break;
+
+	case V4L2_CID_CONTRAST:
+		ctrl->value = state->contrast;
+		break;
+
+	case V4L2_CID_SATURATION:
+		ctrl->value = state->sat;
+		break;
+
+	case V4L2_CID_HUE:
+		ctrl->value = state->hue;
+		break;
+
+	case V4L2_CID_AUDIO_MUTE:
+		ctrl->value = state->audio_main_mute;
+		break;
+
+	case V4L2_CID_AUDIO_VOLUME:
+		ctrl->value = state->audio_main_volume;
+		break;
+
+	case V4L2_CID_AUDIO_BALANCE:
+		ctrl->value = state->audio_main_balance;
+		break;
+
+	case V4L2_CID_AUDIO_TREBLE:
+		ctrl->value = state->audio_main_treble;
+		break;
+
+	case V4L2_CID_AUDIO_BASS:
+		ctrl->value = state->audio_main_bass;
+		break;
+
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static struct v4l2_queryctrl saa717x_qctrl[] = {
+	{
+		.id            = V4L2_CID_BRIGHTNESS,
+		.type          = V4L2_CTRL_TYPE_INTEGER,
+		.name          = "Brightness",
+		.minimum       = 0,
+		.maximum       = 255,
+		.step          = 1,
+		.default_value = 128,
+		.flags         = 0,
+	}, {
+		.id            = V4L2_CID_CONTRAST,
+		.type          = V4L2_CTRL_TYPE_INTEGER,
+		.name          = "Contrast",
+		.minimum       = 0,
+		.maximum       = 255,
+		.step          = 1,
+		.default_value = 64,
+		.flags         = 0,
+	}, {
+		.id            = V4L2_CID_SATURATION,
+		.type          = V4L2_CTRL_TYPE_INTEGER,
+		.name          = "Saturation",
+		.minimum       = 0,
+		.maximum       = 255,
+		.step          = 1,
+		.default_value = 64,
+		.flags         = 0,
+	}, {
+		.id            = V4L2_CID_HUE,
+		.type          = V4L2_CTRL_TYPE_INTEGER,
+		.name          = "Hue",
+		.minimum       = -128,
+		.maximum       = 127,
+		.step          = 1,
+		.default_value = 0,
+		.flags 	       = 0,
+	}, {
+		.id            = V4L2_CID_AUDIO_VOLUME,
+		.type          = V4L2_CTRL_TYPE_INTEGER,
+		.name          = "Volume",
+		.minimum       = 0,
+		.maximum       = 65535,
+		.step          = 65535 / 100,
+		.default_value = 58880,
+		.flags         = 0,
+	}, {
+		.id            = V4L2_CID_AUDIO_BALANCE,
+		.type          = V4L2_CTRL_TYPE_INTEGER,
+		.name          = "Balance",
+		.minimum       = 0,
+		.maximum       = 65535,
+		.step          = 65535 / 100,
+		.default_value = 32768,
+		.flags         = 0,
+	}, {
+		.id            = V4L2_CID_AUDIO_MUTE,
+		.type          = V4L2_CTRL_TYPE_BOOLEAN,
+		.name          = "Mute",
+		.minimum       = 0,
+		.maximum       = 1,
+		.step          = 1,
+		.default_value = 1,
+		.flags         = 0,
+	}, {
+		.id            = V4L2_CID_AUDIO_BASS,
+		.type          = V4L2_CTRL_TYPE_INTEGER,
+		.name          = "Bass",
+		.minimum       = 0,
+		.maximum       = 65535,
+		.step          = 65535 / 100,
+		.default_value = 32768,
+	}, {
+		.id            = V4L2_CID_AUDIO_TREBLE,
+		.type          = V4L2_CTRL_TYPE_INTEGER,
+		.name          = "Treble",
+		.minimum       = 0,
+		.maximum       = 65535,
+		.step          = 65535 / 100,
+		.default_value = 32768,
+	},
+};
+
+static int saa717x_set_video_input(struct i2c_client *client, struct saa717x_state *decoder, int inp)
+{
+	int is_tuner = inp & 0x80;  /* tuner input flag */
+
+	inp &= 0x7f;
+
+	v4l_dbg(1, debug, client, "decoder set input (%d)\n", inp);
+	/* inputs from 0-9 are available*/
+	/* saa717x have mode0-mode9 but mode5 is reserved. */
+	if (inp < 0 || inp > 9 || inp == 5)
+		return -EINVAL;
+
+	if (decoder->input != inp) {
+		int input_line = inp;
+
+		decoder->input = input_line;
+		v4l_dbg(1, debug, client,  "now setting %s input %d\n",
+				input_line >= 6 ? "S-Video" : "Composite",
+				input_line);
+
+		/* select mode */
+		saa717x_write(client, 0x102,
+				(saa717x_read(client, 0x102) & 0xf0) |
+				input_line);
+
+		/* bypass chrominance trap for modes 6..9 */
+		saa717x_write(client, 0x109,
+				(saa717x_read(client, 0x109) & 0x7f) |
+				(input_line < 6 ? 0x0 : 0x80));
+
+		/* change audio_mode */
+		if (is_tuner) {
+			/* tuner */
+			set_audio_mode(client, decoder->tuner_audio_mode);
+		} else {
+			/* Force to STEREO mode if Composite or
+			 * S-Video were chosen */
+			set_audio_mode(client, TUNER_AUDIO_STEREO);
+		}
+		/* change initialize procedure (Composite/S-Video) */
+		if (is_tuner)
+			saa717x_write_regs(client, reg_init_tuner_input);
+		else if (input_line >= 6)
+			saa717x_write_regs(client, reg_init_svideo_input);
+		else
+			saa717x_write_regs(client, reg_init_composite_input);
+	}
+
+	return 0;
+}
+
+static int saa717x_command(struct i2c_client *client, unsigned cmd, void *arg)
+{
+	struct saa717x_state *decoder = i2c_get_clientdata(client);
+
+	v4l_dbg(1, debug, client, "IOCTL: %08x\n", cmd);
+
+	switch (cmd) {
+	case VIDIOC_INT_AUDIO_CLOCK_FREQ:
+		return saa717x_set_audio_clock_freq(client, *(u32 *)arg);
+
+	case VIDIOC_G_CTRL:
+		return saa717x_get_v4lctrl(client, (struct v4l2_control *)arg);
+
+	case VIDIOC_S_CTRL:
+		return saa717x_set_v4lctrl(client, (struct v4l2_control *)arg);
+
+	case VIDIOC_QUERYCTRL: {
+		struct v4l2_queryctrl *qc = arg;
+		int i;
+
+		for (i = 0; i < ARRAY_SIZE(saa717x_qctrl); i++)
+			if (qc->id && qc->id == saa717x_qctrl[i].id) {
+				memcpy(qc, &saa717x_qctrl[i], sizeof(*qc));
+				return 0;
+			}
+		return -EINVAL;
+	}
+
+#ifdef CONFIG_VIDEO_ADV_DEBUG
+	case VIDIOC_DBG_G_REGISTER: {
+		struct v4l2_register *reg = arg;
+
+		if (!v4l2_chip_match_i2c_client(client, reg->match_type, reg->match_chip))
+			return -EINVAL;
+		if (!capable(CAP_SYS_ADMIN))
+			return -EPERM;
+		reg->val = saa717x_read(client, reg->reg);
+		break;
+	}
+
+	case VIDIOC_DBG_S_REGISTER: {
+		struct v4l2_register *reg = arg;
+		u16 addr = reg->reg & 0xffff;
+		u8 val = reg->val & 0xff;
+
+		if (!v4l2_chip_match_i2c_client(client, reg->match_type, reg->match_chip))
+			return -EINVAL;
+		if (!capable(CAP_SYS_ADMIN))
+			return -EPERM;
+		saa717x_write(client, addr, val);
+		break;
+	}
+#endif
+
+	case VIDIOC_S_FMT: {
+		struct v4l2_format *fmt = (struct v4l2_format *)arg;
+		struct v4l2_pix_format *pix;
+		int prescale, h_scale, v_scale;
+
+		pix = &fmt->fmt.pix;
+		v4l_dbg(1, debug, client, "decoder set size\n");
+
+		/* FIXME need better bounds checking here */
+		if (pix->width < 1 || pix->width > 1440)
+			return -EINVAL;
+		if (pix->height < 1 || pix->height > 960)
+			return -EINVAL;
+
+		/* scaling setting */
+		/* NTSC and interlace only */
+		prescale = SAA717X_NTSC_WIDTH / pix->width;
+		if (prescale == 0)
+			prescale = 1;
+		h_scale = 1024 * SAA717X_NTSC_WIDTH / prescale / pix->width;
+		/* interlace */
+		v_scale = 512 * 2 * SAA717X_NTSC_HEIGHT / pix->height;
+
+		/* Horizontal prescaling etc */
+		set_h_prescale(client, 0, prescale);
+		set_h_prescale(client, 1, prescale);
+
+		/* Horizontal scaling increment */
+		/* TASK A */
+		saa717x_write(client, 0x6C, (u8)(h_scale & 0xFF));
+		saa717x_write(client, 0x6D, (u8)((h_scale >> 8) & 0xFF));
+		/* TASK B */
+		saa717x_write(client, 0xAC, (u8)(h_scale & 0xFF));
+		saa717x_write(client, 0xAD, (u8)((h_scale >> 8) & 0xFF));
+
+		/* Vertical prescaling etc */
+		set_v_scale(client, 0, v_scale);
+		set_v_scale(client, 1, v_scale);
+
+		/* set video output size */
+		/* video number of pixels at output */
+		/* TASK A */
+		saa717x_write(client, 0x5C, (u8)(pix->width & 0xFF));
+		saa717x_write(client, 0x5D, (u8)((pix->width >> 8) & 0xFF));
+		/* TASK B */
+		saa717x_write(client, 0x9C, (u8)(pix->width & 0xFF));
+		saa717x_write(client, 0x9D, (u8)((pix->width >> 8) & 0xFF));
+
+		/* video number of lines at output */
+		/* TASK A */
+		saa717x_write(client, 0x5E, (u8)(pix->height & 0xFF));
+		saa717x_write(client, 0x5F, (u8)((pix->height >> 8) & 0xFF));
+		/* TASK B */
+		saa717x_write(client, 0x9E, (u8)(pix->height & 0xFF));
+		saa717x_write(client, 0x9F, (u8)((pix->height >> 8) & 0xFF));
+		break;
+	}
+
+	case AUDC_SET_RADIO:
+		decoder->radio = 1;
+		break;
+
+	case VIDIOC_S_STD: {
+		v4l2_std_id std = *(v4l2_std_id *) arg;
+
+		v4l_dbg(1, debug, client, "decoder set norm ");
+		v4l_dbg(1, debug, client, "(not yet implementd)\n");
+
+		decoder->radio = 0;
+		decoder->std = std;
+		break;
+	}
+
+	case VIDIOC_INT_G_AUDIO_ROUTING: {
+		struct v4l2_routing *route = arg;
+
+		route->input = decoder->audio_input;
+		route->output = 0;
+		break;
+	}
+
+	case VIDIOC_INT_S_AUDIO_ROUTING: {
+		struct v4l2_routing *route = arg;
+
+		if (route->input < 3) { /* FIXME! --tadachi */
+			decoder->audio_input = route->input;
+			v4l_dbg(1, debug, client,
+				"set decoder audio input to %d\n",
+				decoder->audio_input);
+			set_audio_regs(client, decoder);
+			break;
+		}
+		return -ERANGE;
+	}
+
+	case VIDIOC_INT_S_VIDEO_ROUTING: {
+		struct v4l2_routing *route = arg;
+		int inp = route->input;
+
+		return saa717x_set_video_input(client, decoder, inp);
+	}
+
+	case VIDIOC_STREAMON: {
+		v4l_dbg(1, debug, client, "decoder enable output\n");
+		decoder->enable = 1;
+		saa717x_write(client, 0x193, 0xa6);
+		break;
+	}
+
+	case VIDIOC_STREAMOFF: {
+		v4l_dbg(1, debug, client, "decoder disable output\n");
+		decoder->enable = 0;
+		saa717x_write(client, 0x193, 0x26); /* right? FIXME!--tadachi */
+		break;
+	}
+
+		/* change audio mode */
+	case VIDIOC_S_TUNER: {
+		struct v4l2_tuner *vt = (struct v4l2_tuner *)arg;
+		int audio_mode;
+		char *mes[4] = {
+			"MONO", "STEREO", "LANG1", "LANG2/SAP"
+		};
+
+		audio_mode = V4L2_TUNER_MODE_STEREO;
+
+		switch (vt->audmode) {
+		case V4L2_TUNER_MODE_MONO:
+			audio_mode = TUNER_AUDIO_MONO;
+			break;
+		case V4L2_TUNER_MODE_STEREO:
+			audio_mode = TUNER_AUDIO_STEREO;
+			break;
+		case V4L2_TUNER_MODE_LANG2:
+			audio_mode = TUNER_AUDIO_LANG2;
+			break;
+		case V4L2_TUNER_MODE_LANG1:
+			audio_mode = TUNER_AUDIO_LANG1;
+			break;
+		}
+
+		v4l_dbg(1, debug, client, "change audio mode to %s\n",
+				mes[audio_mode]);
+		decoder->tuner_audio_mode = audio_mode;
+		/* The registers are not changed here. */
+		/* See DECODER_ENABLE_OUTPUT section. */
+		set_audio_mode(client, decoder->tuner_audio_mode);
+		break;
+	}
+
+	case VIDIOC_G_TUNER: {
+		struct v4l2_tuner *vt = (struct v4l2_tuner *)arg;
+		int dual_f, stereo_f;
+
+		if (decoder->radio)
+			break;
+		get_inf_dev_status(client, &dual_f, &stereo_f);
+
+		v4l_dbg(1, debug, client, "DETECT==st:%d dual:%d\n",
+				stereo_f, dual_f);
+
+		/* mono */
+		if ((dual_f == 0) && (stereo_f == 0)) {
+			vt->rxsubchans = V4L2_TUNER_SUB_MONO;
+			v4l_dbg(1, debug, client, "DETECT==MONO\n");
+		}
+
+		/* stereo */
+		if (stereo_f == 1) {
+			if (vt->audmode == V4L2_TUNER_MODE_STEREO ||
+			    vt->audmode == V4L2_TUNER_MODE_LANG1) {
+				vt->rxsubchans = V4L2_TUNER_SUB_STEREO;
+				v4l_dbg(1, debug, client, "DETECT==ST(ST)\n");
+			} else {
+				vt->rxsubchans = V4L2_TUNER_SUB_MONO;
+				v4l_dbg(1, debug, client, "DETECT==ST(MONO)\n");
+			}
+		}
+
+		/* dual */
+		if (dual_f == 1) {
+			if (vt->audmode == V4L2_TUNER_MODE_LANG2) {
+				vt->rxsubchans = V4L2_TUNER_SUB_LANG2 | V4L2_TUNER_SUB_MONO;
+				v4l_dbg(1, debug, client, "DETECT==DUAL1\n");
+			} else {
+				vt->rxsubchans = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_MONO;
+				v4l_dbg(1, debug, client, "DETECT==DUAL2\n");
+			}
+		}
+		break;
+	}
+
+	case VIDIOC_LOG_STATUS:
+		/* not yet implemented */
+		break;
+
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+/* ----------------------------------------------------------------------- */
+
+
+/* i2c implementation */
+
+/* ----------------------------------------------------------------------- */
+static int saa717x_probe(struct i2c_client *client)
+{
+	struct saa717x_state *decoder;
+	u8 id = 0;
+	char *p = "";
+
+	/* Check if the adapter supports the needed features */
+	if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
+		return -EIO;
+
+	snprintf(client->name, sizeof(client->name) - 1, "saa717x");
+
+	if (saa717x_write(client, 0x5a4, 0xfe) &&
+			saa717x_write(client, 0x5a5, 0x0f) &&
+			saa717x_write(client, 0x5a6, 0x00) &&
+			saa717x_write(client, 0x5a7, 0x01))
+		id = saa717x_read(client, 0x5a0);
+	if (id != 0xc2 && id != 0x32 && id != 0xf2 && id != 0x6c) {
+		v4l_dbg(1, debug, client, "saa717x not found (id=%02x)\n", id);
+		return -ENODEV;
+	}
+	if (id == 0xc2)
+		p = "saa7173";
+	else if (id == 0x32)
+		p = "saa7174A";
+	else if (id == 0x6c)
+		p = "saa7174HL";
+	else
+		p = "saa7171";
+	v4l_info(client, "%s found @ 0x%x (%s)\n", p,
+			client->addr << 1, client->adapter->name);
+
+	decoder = kzalloc(sizeof(struct saa717x_state), GFP_KERNEL);
+	i2c_set_clientdata(client, decoder);
+
+	if (decoder == NULL)
+		return -ENOMEM;
+	decoder->std = V4L2_STD_NTSC;
+	decoder->input = -1;
+	decoder->enable = 1;
+
+	/* tune these parameters */
+	decoder->bright = 0x80;
+	decoder->contrast = 0x44;
+	decoder->sat = 0x40;
+	decoder->hue = 0x00;
+
+	/* FIXME!! */
+	decoder->playback = 0;	/* initially capture mode used */
+	decoder->audio = 1; /* DECODER_AUDIO_48_KHZ */
+
+	decoder->audio_input = 2; /* FIXME!! */
+
+	decoder->tuner_audio_mode = TUNER_AUDIO_STEREO;
+	/* set volume, bass and treble */
+	decoder->audio_main_vol_l = 6;
+	decoder->audio_main_vol_r = 6;
+	decoder->audio_main_bass = 0;
+	decoder->audio_main_treble = 0;
+	decoder->audio_main_mute = 0;
+	decoder->audio_main_balance = 32768;
+	/* normalize (24 to -40 (not -84) -> 65535 to 0) */
+	decoder->audio_main_volume =
+		(decoder->audio_main_vol_r + 41) * 65535 / (24 - (-40));
+
+	v4l_dbg(1, debug, client, "writing init values\n");
+
+	/* FIXME!! */
+	saa717x_write_regs(client, reg_init_initialize);
+	set_video_output_level_regs(client, decoder);
+	/* set bass,treble to 0db 20041101 K.Ohta */
+	decoder->audio_main_bass = 0;
+	decoder->audio_main_treble = 0;
+	set_audio_regs(client, decoder);
+
+	set_current_state(TASK_INTERRUPTIBLE);
+	schedule_timeout(2*HZ);
+	return 0;
+}
+
+static int saa717x_remove(struct i2c_client *client)
+{
+	kfree(i2c_get_clientdata(client));
+	return 0;
+}
+
+/* ----------------------------------------------------------------------- */
+
+static struct v4l2_i2c_driver_data v4l2_i2c_data = {
+	.name = "saa717x",
+	.driverid = I2C_DRIVERID_SAA717X,
+	.command = saa717x_command,
+	.probe = saa717x_probe,
+	.remove = saa717x_remove,
+	.legacy_class = I2C_CLASS_TV_ANALOG | I2C_CLASS_TV_DIGITAL,
+};