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Diffstat (limited to 'drivers/media/video/tda9875.c')
-rw-r--r--drivers/media/video/tda9875.c423
1 files changed, 423 insertions, 0 deletions
diff --git a/drivers/media/video/tda9875.c b/drivers/media/video/tda9875.c
new file mode 100644
index 000000000000..4f1114c033a1
--- /dev/null
+++ b/drivers/media/video/tda9875.c
@@ -0,0 +1,423 @@
+/*
+ * For the TDA9875 chip
+ * (The TDA9875 is used on the Diamond DTV2000 french version
+ * Other cards probably use these chips as well.)
+ * This driver will not complain if used with any
+ * other i2c device with the same address.
+ *
+ * Copyright (c) 2000 Guillaume Delvit based on Gerd Knorr source and
+ * Eric Sandeen
+ * This code is placed under the terms of the GNU General Public License
+ * Based on tda9855.c by Steve VanDeBogart (vandebo@uclink.berkeley.edu)
+ * Which was based on tda8425.c by Greg Alexander (c) 1998
+ *
+ * OPTIONS:
+ * debug - set to 1 if you'd like to see debug messages
+ *
+ * Revision: 0.1 - original version
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/string.h>
+#include <linux/timer.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <linux/slab.h>
+#include <linux/videodev.h>
+#include <linux/i2c.h>
+#include <linux/i2c-algo-bit.h>
+#include <linux/init.h>
+
+#include "bttv.h"
+#include <media/audiochip.h>
+#include <media/id.h>
+
+static int debug; /* insmod parameter */
+module_param(debug, int, S_IRUGO | S_IWUSR);
+MODULE_LICENSE("GPL");
+
+
+/* Addresses to scan */
+static unsigned short normal_i2c[] = {
+ I2C_TDA9875 >> 1,
+ I2C_CLIENT_END
+};
+static unsigned short normal_i2c_range[] = {I2C_CLIENT_END};
+I2C_CLIENT_INSMOD;
+
+/* This is a superset of the TDA9875 */
+struct tda9875 {
+ int mode;
+ int rvol, lvol;
+ int bass, treble;
+ struct i2c_client c;
+};
+
+static struct i2c_driver driver;
+static struct i2c_client client_template;
+
+#define dprintk if (debug) printk
+
+/* The TDA9875 is made by Philips Semiconductor
+ * http://www.semiconductors.philips.com
+ * TDA9875: I2C-bus controlled DSP audio processor, FM demodulator
+ *
+ */
+
+ /* subaddresses for TDA9875 */
+#define TDA9875_MUT 0x12 /*General mute (value --> 0b11001100*/
+#define TDA9875_CFG 0x01 /* Config register (value --> 0b00000000 */
+#define TDA9875_DACOS 0x13 /*DAC i/o select (ADC) 0b0000100*/
+#define TDA9875_LOSR 0x16 /*Line output select regirter 0b0100 0001*/
+
+#define TDA9875_CH1V 0x0c /*Channel 1 volume (mute)*/
+#define TDA9875_CH2V 0x0d /*Channel 2 volume (mute)*/
+#define TDA9875_SC1 0x14 /*SCART 1 in (mono)*/
+#define TDA9875_SC2 0x15 /*SCART 2 in (mono)*/
+
+#define TDA9875_ADCIS 0x17 /*ADC input select (mono) 0b0110 000*/
+#define TDA9875_AER 0x19 /*Audio effect (AVL+Pseudo) 0b0000 0110*/
+#define TDA9875_MCS 0x18 /*Main channel select (DAC) 0b0000100*/
+#define TDA9875_MVL 0x1a /* Main volume gauche */
+#define TDA9875_MVR 0x1b /* Main volume droite */
+#define TDA9875_MBA 0x1d /* Main Basse */
+#define TDA9875_MTR 0x1e /* Main treble */
+#define TDA9875_ACS 0x1f /* Auxilary channel select (FM) 0b0000000*/
+#define TDA9875_AVL 0x20 /* Auxilary volume gauche */
+#define TDA9875_AVR 0x21 /* Auxilary volume droite */
+#define TDA9875_ABA 0x22 /* Auxilary Basse */
+#define TDA9875_ATR 0x23 /* Auxilary treble */
+
+#define TDA9875_MSR 0x02 /* Monitor select register */
+#define TDA9875_C1MSB 0x03 /* Carrier 1 (FM) frequency register MSB */
+#define TDA9875_C1MIB 0x04 /* Carrier 1 (FM) frequency register (16-8]b */
+#define TDA9875_C1LSB 0x05 /* Carrier 1 (FM) frequency register LSB */
+#define TDA9875_C2MSB 0x06 /* Carrier 2 (nicam) frequency register MSB */
+#define TDA9875_C2MIB 0x07 /* Carrier 2 (nicam) frequency register (16-8]b */
+#define TDA9875_C2LSB 0x08 /* Carrier 2 (nicam) frequency register LSB */
+#define TDA9875_DCR 0x09 /* Demodulateur configuration regirter*/
+#define TDA9875_DEEM 0x0a /* FM de-emphasis regirter*/
+#define TDA9875_FMAT 0x0b /* FM Matrix regirter*/
+
+/* values */
+#define TDA9875_MUTE_ON 0xff /* general mute */
+#define TDA9875_MUTE_OFF 0xcc /* general no mute */
+
+
+
+/* Begin code */
+
+static int tda9875_write(struct i2c_client *client, int subaddr, unsigned char val)
+{
+ unsigned char buffer[2];
+ dprintk("In tda9875_write\n");
+ dprintk("Writing %d 0x%x\n", subaddr, val);
+ buffer[0] = subaddr;
+ buffer[1] = val;
+ if (2 != i2c_master_send(client,buffer,2)) {
+ printk(KERN_WARNING "tda9875: I/O error, trying (write %d 0x%x)\n",
+ subaddr, val);
+ return -1;
+ }
+ return 0;
+}
+
+#if 0
+static int tda9875_read(struct i2c_client *client)
+{
+ unsigned char buffer;
+ dprintk("In tda9875_read\n");
+ if (1 != i2c_master_recv(client,&buffer,1)) {
+ printk(KERN_WARNING "tda9875: I/O error, trying (read)\n");
+ return -1;
+ }
+ dprintk("Read 0x%02x\n", buffer);
+ return buffer;
+}
+#endif
+
+static int i2c_read_register(struct i2c_adapter *adap, int addr, int reg)
+{
+ unsigned char write[1];
+ unsigned char read[1];
+ struct i2c_msg msgs[2] = {
+ { addr, 0, 1, write },
+ { addr, I2C_M_RD, 1, read }
+ };
+ write[0] = reg;
+
+ if (2 != i2c_transfer(adap,msgs,2)) {
+ printk(KERN_WARNING "tda9875: I/O error (read2)\n");
+ return -1;
+ }
+ dprintk("tda9875: chip_read2: reg%d=0x%x\n",reg,read[0]);
+ return read[0];
+}
+
+static void tda9875_set(struct i2c_client *client)
+{
+ struct tda9875 *tda = i2c_get_clientdata(client);
+ unsigned char a;
+
+ dprintk(KERN_DEBUG "tda9875_set(%04x,%04x,%04x,%04x)\n",
+ tda->lvol,tda->rvol,tda->bass,tda->treble);
+
+
+ a = tda->lvol & 0xff;
+ tda9875_write(client, TDA9875_MVL, a);
+ a =tda->rvol & 0xff;
+ tda9875_write(client, TDA9875_MVR, a);
+ a =tda->bass & 0xff;
+ tda9875_write(client, TDA9875_MBA, a);
+ a =tda->treble & 0xff;
+ tda9875_write(client, TDA9875_MTR, a);
+}
+
+static void do_tda9875_init(struct i2c_client *client)
+{
+ struct tda9875 *t = i2c_get_clientdata(client);
+ dprintk("In tda9875_init\n");
+ tda9875_write(client, TDA9875_CFG, 0xd0 ); /*reg de config 0 (reset)*/
+ tda9875_write(client, TDA9875_MSR, 0x03 ); /* Monitor 0b00000XXX*/
+ tda9875_write(client, TDA9875_C1MSB, 0x00 ); /*Car1(FM) MSB XMHz*/
+ tda9875_write(client, TDA9875_C1MIB, 0x00 ); /*Car1(FM) MIB XMHz*/
+ tda9875_write(client, TDA9875_C1LSB, 0x00 ); /*Car1(FM) LSB XMHz*/
+ tda9875_write(client, TDA9875_C2MSB, 0x00 ); /*Car2(NICAM) MSB XMHz*/
+ tda9875_write(client, TDA9875_C2MIB, 0x00 ); /*Car2(NICAM) MIB XMHz*/
+ tda9875_write(client, TDA9875_C2LSB, 0x00 ); /*Car2(NICAM) LSB XMHz*/
+ tda9875_write(client, TDA9875_DCR, 0x00 ); /*Demod config 0x00*/
+ tda9875_write(client, TDA9875_DEEM, 0x44 ); /*DE-Emph 0b0100 0100*/
+ tda9875_write(client, TDA9875_FMAT, 0x00 ); /*FM Matrix reg 0x00*/
+ tda9875_write(client, TDA9875_SC1, 0x00 ); /* SCART 1 (SC1)*/
+ tda9875_write(client, TDA9875_SC2, 0x01 ); /* SCART 2 (sc2)*/
+
+ tda9875_write(client, TDA9875_CH1V, 0x10 ); /* Channel volume 1 mute*/
+ tda9875_write(client, TDA9875_CH2V, 0x10 ); /* Channel volume 2 mute */
+ tda9875_write(client, TDA9875_DACOS, 0x02 ); /* sig DAC i/o(in:nicam)*/
+ tda9875_write(client, TDA9875_ADCIS, 0x6f ); /* sig ADC input(in:mono)*/
+ tda9875_write(client, TDA9875_LOSR, 0x00 ); /* line out (in:mono)*/
+ tda9875_write(client, TDA9875_AER, 0x00 ); /*06 Effect (AVL+PSEUDO) */
+ tda9875_write(client, TDA9875_MCS, 0x44 ); /* Main ch select (DAC) */
+ tda9875_write(client, TDA9875_MVL, 0x03 ); /* Vol Main left 10dB */
+ tda9875_write(client, TDA9875_MVR, 0x03 ); /* Vol Main right 10dB*/
+ tda9875_write(client, TDA9875_MBA, 0x00 ); /* Main Bass Main 0dB*/
+ tda9875_write(client, TDA9875_MTR, 0x00 ); /* Main Treble Main 0dB*/
+ tda9875_write(client, TDA9875_ACS, 0x44 ); /* Aux chan select (dac)*/
+ tda9875_write(client, TDA9875_AVL, 0x00 ); /* Vol Aux left 0dB*/
+ tda9875_write(client, TDA9875_AVR, 0x00 ); /* Vol Aux right 0dB*/
+ tda9875_write(client, TDA9875_ABA, 0x00 ); /* Aux Bass Main 0dB*/
+ tda9875_write(client, TDA9875_ATR, 0x00 ); /* Aux Aigus Main 0dB*/
+
+ tda9875_write(client, TDA9875_MUT, 0xcc ); /* General mute */
+
+ t->mode=AUDIO_UNMUTE;
+ t->lvol=t->rvol =0; /* 0dB */
+ t->bass=0; /* 0dB */
+ t->treble=0; /* 0dB */
+ tda9875_set(client);
+
+}
+
+
+/* *********************** *
+ * i2c interface functions *
+ * *********************** */
+
+static int tda9875_checkit(struct i2c_adapter *adap, int addr)
+{
+ int dic,rev;
+
+ dic=i2c_read_register(adap,addr,254);
+ rev=i2c_read_register(adap,addr,255);
+
+ if(dic==0 || dic==2) { // tda9875 and tda9875A
+ printk("tda9875: TDA9875%s Rev.%d detected at 0x%x\n",
+ dic==0?"":"A", rev,addr<<1);
+ return 1;
+ }
+ printk("tda9875: no such chip at 0x%x (dic=0x%x rev=0x%x)\n",addr<<1,dic,rev);
+ return(0);
+}
+
+static int tda9875_attach(struct i2c_adapter *adap, int addr, int kind)
+{
+ struct tda9875 *t;
+ struct i2c_client *client;
+ dprintk("In tda9875_attach\n");
+
+ t = kmalloc(sizeof *t,GFP_KERNEL);
+ if (!t)
+ return -ENOMEM;
+ memset(t,0,sizeof *t);
+
+ client = &t->c;
+ memcpy(client,&client_template,sizeof(struct i2c_client));
+ client->adapter = adap;
+ client->addr = addr;
+ i2c_set_clientdata(client, t);
+
+ if(!tda9875_checkit(adap,addr)) {
+ kfree(t);
+ return 1;
+ }
+
+ do_tda9875_init(client);
+ printk(KERN_INFO "tda9875: init\n");
+
+ i2c_attach_client(client);
+ return 0;
+}
+
+static int tda9875_probe(struct i2c_adapter *adap)
+{
+#ifdef I2C_CLASS_TV_ANALOG
+ if (adap->class & I2C_CLASS_TV_ANALOG)
+ return i2c_probe(adap, &addr_data, tda9875_attach);
+#else
+ if (adap->id == (I2C_ALGO_BIT | I2C_HW_B_BT848))
+ return i2c_probe(adap, &addr_data, tda9875_attach);
+#endif
+ return 0;
+}
+
+static int tda9875_detach(struct i2c_client *client)
+{
+ struct tda9875 *t = i2c_get_clientdata(client);
+
+ do_tda9875_init(client);
+ i2c_detach_client(client);
+
+ kfree(t);
+ return 0;
+}
+
+static int tda9875_command(struct i2c_client *client,
+ unsigned int cmd, void *arg)
+{
+ struct tda9875 *t = i2c_get_clientdata(client);
+
+ dprintk("In tda9875_command...\n");
+
+ switch (cmd) {
+ /* --- v4l ioctls --- */
+ /* take care: bttv does userspace copying, we'll get a
+ kernel pointer here... */
+ case VIDIOCGAUDIO:
+ {
+ struct video_audio *va = arg;
+ int left,right;
+
+ dprintk("VIDIOCGAUDIO\n");
+
+ va->flags |= VIDEO_AUDIO_VOLUME |
+ VIDEO_AUDIO_BASS |
+ VIDEO_AUDIO_TREBLE;
+
+ /* min is -84 max is 24 */
+ left = (t->lvol+84)*606;
+ right = (t->rvol+84)*606;
+ va->volume=max(left,right);
+ va->balance=(32768*min(left,right))/
+ (va->volume ? va->volume : 1);
+ va->balance=(left<right)?
+ (65535-va->balance) : va->balance;
+ va->bass = (t->bass+12)*2427; /* min -12 max +15 */
+ va->treble = (t->treble+12)*2730;/* min -12 max +12 */
+ va->mode |= VIDEO_SOUND_MONO;
+
+ break; /* VIDIOCGAUDIO case */
+ }
+
+ case VIDIOCSAUDIO:
+ {
+ struct video_audio *va = arg;
+ int left,right;
+
+ dprintk("VIDEOCSAUDIO...\n");
+ left = (min(65536 - va->balance,32768) *
+ va->volume) / 32768;
+ right = (min(va->balance,(__u16)32768) *
+ va->volume) / 32768;
+ t->lvol = ((left/606)-84) & 0xff;
+ if (t->lvol > 24)
+ t->lvol = 24;
+ if (t->lvol < -84)
+ t->lvol = -84 & 0xff;
+
+ t->rvol = ((right/606)-84) & 0xff;
+ if (t->rvol > 24)
+ t->rvol = 24;
+ if (t->rvol < -84)
+ t->rvol = -84 & 0xff;
+
+ t->bass = ((va->bass/2400)-12) & 0xff;
+ if (t->bass > 15)
+ t->bass = 15;
+ if (t->bass < -12)
+ t->bass = -12 & 0xff;
+
+ t->treble = ((va->treble/2700)-12) & 0xff;
+ if (t->treble > 12)
+ t->treble = 12;
+ if (t->treble < -12)
+ t->treble = -12 & 0xff;
+
+
+
+//printk("tda9875 bal:%04x vol:%04x bass:%04x treble:%04x\n",va->balance,va->volume,va->bass,va->treble);
+
+
+ tda9875_set(client);
+
+ break;
+
+ } /* end of VIDEOCSAUDIO case */
+
+ default: /* Not VIDEOCGAUDIO or VIDEOCSAUDIO */
+
+ /* nothing */
+ dprintk("Default\n");
+
+ } /* end of (cmd) switch */
+
+ return 0;
+}
+
+
+static struct i2c_driver driver = {
+ .owner = THIS_MODULE,
+ .name = "i2c tda9875 driver",
+ .id = I2C_DRIVERID_TDA9875,
+ .flags = I2C_DF_NOTIFY,
+ .attach_adapter = tda9875_probe,
+ .detach_client = tda9875_detach,
+ .command = tda9875_command,
+};
+
+static struct i2c_client client_template =
+{
+ I2C_DEVNAME("tda9875"),
+ .driver = &driver,
+};
+
+static int __init tda9875_init(void)
+{
+ return i2c_add_driver(&driver);
+}
+
+static void __exit tda9875_fini(void)
+{
+ i2c_del_driver(&driver);
+}
+
+module_init(tda9875_init);
+module_exit(tda9875_fini);
+
+/*
+ * Local variables:
+ * c-basic-offset: 8
+ * End:
+ */
+
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