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https://github.com/adulau/aha.git
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V4L/DVB (8630): First mxb cleanup phase
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Hans Verkuil
Mauro Carvalho Chehab
parent
7d341a6a52
commit
a832781cd3
4 changed files with 169 additions and 316 deletions
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@ -466,15 +466,15 @@ static int mxb_attach(struct saa7146_dev* dev, struct saa7146_pci_extension_data
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/* checking for i2c-devices can be omitted here, because we
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already did this in "mxb_vl42_probe" */
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saa7146_vv_init(dev,&vv_data);
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if( 0 != saa7146_register_device(&mxb->video_dev, dev, "mxb", VFL_TYPE_GRABBER)) {
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saa7146_vv_init(dev, &vv_data);
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if (saa7146_register_device(&mxb->video_dev, dev, "mxb", VFL_TYPE_GRABBER)) {
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ERR(("cannot register capture v4l2 device. skipping.\n"));
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return -1;
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}
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/* initialization stuff (vbi) (only for revision > 0 and for extensions which want it)*/
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if( 0 != MXB_BOARD_CAN_DO_VBI(dev)) {
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if( 0 != saa7146_register_device(&mxb->vbi_dev, dev, "mxb", VFL_TYPE_VBI)) {
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if (MXB_BOARD_CAN_DO_VBI(dev)) {
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if (saa7146_register_device(&mxb->vbi_dev, dev, "mxb", VFL_TYPE_VBI)) {
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ERR(("cannot register vbi v4l2 device. skipping.\n"));
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}
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}
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@ -486,7 +486,7 @@ static int mxb_attach(struct saa7146_dev* dev, struct saa7146_pci_extension_data
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i2c_use_client(mxb->saa7111a);
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i2c_use_client(mxb->tuner);
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printk("mxb: found 'Multimedia eXtension Board'-%d.\n",mxb_num);
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printk("mxb: found Multimedia eXtension Board #%d.\n", mxb_num);
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mxb_num++;
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mxb_init_done(dev);
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@ -737,8 +737,8 @@ static int mxb_ioctl(struct saa7146_fh *fh, unsigned int cmd, void *arg)
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DEB_EE(("VIDIOC_G_TUNER: %d\n", t->index));
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memset(t,0,sizeof(*t));
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strcpy(t->name, "Television");
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strlcpy(t->name, "Television", sizeof(t->name));
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t->type = V4L2_TUNER_ANALOG_TV;
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t->capability = V4L2_TUNER_CAP_NORM | V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_LANG1 | V4L2_TUNER_CAP_LANG2 | V4L2_TUNER_CAP_SAP;
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t->rangelow = 772; /* 48.25 MHZ / 62.5 kHz = 772, see fi1216mk2-specs, page 2 */
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@ -746,7 +746,6 @@ static int mxb_ioctl(struct saa7146_fh *fh, unsigned int cmd, void *arg)
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/* FIXME: add the real signal strength here */
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t->signal = 0xffff;
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t->afc = 0;
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mxb->tda9840->driver->command(mxb->tda9840,TDA9840_DETECT, &byte);
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t->audmode = mxb->cur_mode;
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@ -2,6 +2,7 @@
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tda9840 - i2c-driver for the tda9840 by SGS Thomson
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Copyright (C) 1998-2003 Michael Hunold <michael@mihu.de>
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Copyright (C) 2008 Hans Verkuil <hverkuil@xs4all.nl>
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The tda9840 is a stereo/dual sound processor with digital
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identification. It can be found at address 0x84 on the i2c-bus.
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@ -28,15 +29,18 @@
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#include <linux/module.h>
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#include <linux/ioctl.h>
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#include <linux/i2c.h>
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#include <media/v4l2-common.h>
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#include <media/v4l2-i2c-drv-legacy.h>
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#include "tda9840.h"
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static int debug; /* insmod parameter */
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module_param(debug, int, 0644);
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MODULE_PARM_DESC(debug, "Turn on/off device debugging (default:off).");
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MODULE_AUTHOR("Michael Hunold <michael@mihu.de>");
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MODULE_DESCRIPTION("tda9840 driver");
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MODULE_LICENSE("GPL");
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#define dprintk(args...) \
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do { if (debug) { printk("%s: %s()[%d]: ", KBUILD_MODNAME, __func__, __LINE__); printk(args); } } while (0)
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static int debug;
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module_param(debug, int, 0644);
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MODULE_PARM_DESC(debug, "Debug level (0-1)");
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#define SWITCH 0x00
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#define LEVEL_ADJUST 0x02
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@ -49,18 +53,21 @@ static unsigned short normal_i2c[] = { I2C_ADDR_TDA9840, I2C_CLIENT_END };
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/* magic definition of all other variables and things */
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I2C_CLIENT_INSMOD;
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static struct i2c_driver driver;
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static struct i2c_client client_template;
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static void tda9840_write(struct i2c_client *client, u8 reg, u8 val)
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{
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if (i2c_smbus_write_byte_data(client, reg, val))
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v4l_dbg(1, debug, client, "error writing %02x to %02x\n",
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val, reg);
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}
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static int command(struct i2c_client *client, unsigned int cmd, void *arg)
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static int tda9840_command(struct i2c_client *client, unsigned cmd, void *arg)
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{
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int result;
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int byte = *(int *)arg;
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switch (cmd) {
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case TDA9840_SWITCH:
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dprintk("TDA9840_SWITCH: 0x%02x\n", byte);
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v4l_dbg(1, debug, client, "TDA9840_SWITCH: 0x%02x\n", byte);
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if (byte != TDA9840_SET_MONO
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&& byte != TDA9840_SET_MUTE
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@ -73,14 +80,11 @@ static int command(struct i2c_client *client, unsigned int cmd, void *arg)
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return -EINVAL;
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}
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result = i2c_smbus_write_byte_data(client, SWITCH, byte);
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if (result)
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dprintk("i2c_smbus_write_byte() failed, ret:%d\n", result);
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tda9840_write(client, SWITCH, byte);
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break;
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case TDA9840_LEVEL_ADJUST:
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dprintk("TDA9840_LEVEL_ADJUST: %d\n", byte);
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v4l_dbg(1, debug, client, "TDA9840_LEVEL_ADJUST: %d\n", byte);
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/* check for correct range */
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if (byte > 25 || byte < -20)
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@ -92,15 +96,11 @@ static int command(struct i2c_client *client, unsigned int cmd, void *arg)
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byte += 0x8;
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else
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byte = -byte;
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result = i2c_smbus_write_byte_data(client, LEVEL_ADJUST, byte);
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if (result)
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dprintk("i2c_smbus_write_byte() failed, ret:%d\n", result);
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tda9840_write(client, LEVEL_ADJUST, byte);
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break;
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case TDA9840_STEREO_ADJUST:
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dprintk("TDA9840_STEREO_ADJUST: %d\n", byte);
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v4l_dbg(1, debug, client, "TDA9840_STEREO_ADJUST: %d\n", byte);
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/* check for correct range */
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if (byte > 25 || byte < -24)
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@ -113,9 +113,7 @@ static int command(struct i2c_client *client, unsigned int cmd, void *arg)
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else
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byte = -byte;
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result = i2c_smbus_write_byte_data(client, STEREO_ADJUST, byte);
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if (result)
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dprintk("i2c_smbus_write_byte() failed, ret:%d\n", result);
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tda9840_write(client, STEREO_ADJUST, byte);
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break;
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case TDA9840_DETECT: {
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@ -123,29 +121,29 @@ static int command(struct i2c_client *client, unsigned int cmd, void *arg)
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byte = i2c_smbus_read_byte_data(client, STEREO_ADJUST);
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if (byte == -1) {
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dprintk("i2c_smbus_read_byte_data() failed\n");
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v4l_dbg(1, debug, client,
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"i2c_smbus_read_byte_data() failed\n");
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return -EIO;
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}
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if (0 != (byte & 0x80)) {
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dprintk("TDA9840_DETECT: register contents invalid\n");
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if (byte & 0x80) {
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v4l_dbg(1, debug, client,
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"TDA9840_DETECT: register contents invalid\n");
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return -EINVAL;
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}
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dprintk("TDA9840_DETECT: byte: 0x%02x\n", byte);
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*ret = ((byte & 0x60) >> 5);
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v4l_dbg(1, debug, client, "TDA9840_DETECT: byte: 0x%02x\n", byte);
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*ret = (byte & 0x60) >> 5;
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result = 0;
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break;
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}
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case TDA9840_TEST:
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dprintk("TDA9840_TEST: 0x%02x\n", byte);
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v4l_dbg(1, debug, client, "TDA9840_TEST: 0x%02x\n", byte);
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/* mask out irrelevant bits */
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byte &= 0x3;
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result = i2c_smbus_write_byte_data(client, TEST, byte);
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if (result)
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dprintk("i2c_smbus_write_byte() failed, ret:%d\n", result);
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tda9840_write(client, TEST, byte);
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break;
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default:
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return -ENOIOCTLCMD;
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@ -157,99 +155,51 @@ static int command(struct i2c_client *client, unsigned int cmd, void *arg)
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return 0;
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}
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static int detect(struct i2c_adapter *adapter, int address, int kind)
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static int tda9840_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_client *client;
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int result = 0;
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int byte = 0x0;
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int result;
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int byte;
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/* let's see whether this adapter can support what we need */
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if (0 == i2c_check_functionality(adapter,
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I2C_FUNC_SMBUS_READ_BYTE_DATA |
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I2C_FUNC_SMBUS_WRITE_BYTE_DATA)) {
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if (!i2c_check_functionality(client->adapter,
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I2C_FUNC_SMBUS_READ_BYTE_DATA |
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I2C_FUNC_SMBUS_WRITE_BYTE_DATA))
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return 0;
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}
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/* allocate memory for client structure */
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client = kmalloc(sizeof(struct i2c_client), GFP_KERNEL);
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if (!client) {
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printk("not enough kernel memory\n");
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return -ENOMEM;
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}
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/* fill client structure */
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memcpy(client, &client_template, sizeof(struct i2c_client));
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client->addr = address;
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client->adapter = adapter;
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/* tell the i2c layer a new client has arrived */
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if (0 != (result = i2c_attach_client(client))) {
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kfree(client);
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return result;
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}
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v4l_info(client, "chip found @ 0x%x (%s)\n",
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client->addr << 1, client->adapter->name);
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/* set initial values for level & stereo - adjustment, mode */
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byte = 0;
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result = command(client, TDA9840_LEVEL_ADJUST, &byte);
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result += command(client, TDA9840_STEREO_ADJUST, &byte);
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result = tda9840_command(client, TDA9840_LEVEL_ADJUST, &byte);
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result += tda9840_command(client, TDA9840_STEREO_ADJUST, &byte);
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byte = TDA9840_SET_MONO;
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result = command(client, TDA9840_SWITCH, &byte);
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result = tda9840_command(client, TDA9840_SWITCH, &byte);
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if (result) {
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dprintk("could not initialize tda9840\n");
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v4l_dbg(1, debug, client, "could not initialize tda9840\n");
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return -ENODEV;
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}
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printk("tda9840: detected @ 0x%02x on adapter %s\n", address, &client->adapter->name[0]);
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return 0;
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}
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static int attach(struct i2c_adapter *adapter)
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static int tda9840_legacy_probe(struct i2c_adapter *adapter)
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{
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/* let's see whether this is a know adapter we can attach to */
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if (adapter->id != I2C_HW_SAA7146) {
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dprintk("refusing to probe on unknown adapter [name='%s',id=0x%x]\n", adapter->name, adapter->id);
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return -ENODEV;
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}
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return i2c_probe(adapter, &addr_data, &detect);
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/* Let's see whether this is a known adapter we can attach to.
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Prevents conflicts with tvaudio.c. */
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return adapter->id == I2C_HW_SAA7146;
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}
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static int detach(struct i2c_client *client)
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{
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int ret = i2c_detach_client(client);
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kfree(client);
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return ret;
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}
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static struct i2c_driver driver = {
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.driver = {
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.name = "tda9840",
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},
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.id = I2C_DRIVERID_TDA9840,
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.attach_adapter = attach,
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.detach_client = detach,
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.command = command,
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static const struct i2c_device_id tda9840_id[] = {
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{ "tda9840", 0 },
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{ }
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};
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MODULE_DEVICE_TABLE(i2c, tda9840_id);
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static struct i2c_client client_template = {
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static struct v4l2_i2c_driver_data v4l2_i2c_data = {
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.name = "tda9840",
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.driver = &driver,
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.driverid = I2C_DRIVERID_TDA9840,
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.command = tda9840_command,
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.probe = tda9840_probe,
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.legacy_probe = tda9840_legacy_probe,
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.id_table = tda9840_id,
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};
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static int __init this_module_init(void)
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{
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return i2c_add_driver(&driver);
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}
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static void __exit this_module_exit(void)
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{
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i2c_del_driver(&driver);
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}
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module_init(this_module_init);
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module_exit(this_module_exit);
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MODULE_AUTHOR("Michael Hunold <michael@mihu.de>");
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MODULE_DESCRIPTION("tda9840 driver");
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MODULE_LICENSE("GPL");
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@ -2,6 +2,7 @@
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tea6415c - i2c-driver for the tea6415c by SGS Thomson
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Copyright (C) 1998-2003 Michael Hunold <michael@mihu.de>
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Copyright (C) 2008 Hans Verkuil <hverkuil@xs4all.nl>
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The tea6415c is a bus controlled video-matrix-switch
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with 8 inputs and 6 outputs.
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@ -30,18 +31,18 @@
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#include <linux/module.h>
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#include <linux/ioctl.h>
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#include <linux/i2c.h>
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#include <media/v4l2-common.h>
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#include <media/v4l2-i2c-drv-legacy.h>
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#include "tea6415c.h"
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static int debug; /* insmod parameter */
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MODULE_AUTHOR("Michael Hunold <michael@mihu.de>");
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MODULE_DESCRIPTION("tea6415c driver");
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MODULE_LICENSE("GPL");
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static int debug;
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module_param(debug, int, 0644);
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MODULE_PARM_DESC(debug, "Turn on/off device debugging (default:off).");
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#define dprintk(args...) \
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do { if (debug) { printk("%s: %s()[%d]: ", KBUILD_MODNAME, __func__, __LINE__); printk(args); } } while (0)
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#define TEA6415C_NUM_INPUTS 8
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#define TEA6415C_NUM_OUTPUTS 6
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MODULE_PARM_DESC(debug, "Debug level (0-1)");
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/* addresses to scan, found only at 0x03 and/or 0x43 (7-bit) */
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static unsigned short normal_i2c[] = { I2C_TEA6415C_1, I2C_TEA6415C_2, I2C_CLIENT_END };
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@ -49,60 +50,6 @@ static unsigned short normal_i2c[] = { I2C_TEA6415C_1, I2C_TEA6415C_2, I2C_CLIEN
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/* magic definition of all other variables and things */
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I2C_CLIENT_INSMOD;
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static struct i2c_driver driver;
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static struct i2c_client client_template;
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/* this function is called by i2c_probe */
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static int detect(struct i2c_adapter *adapter, int address, int kind)
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{
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struct i2c_client *client = NULL;
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int err = 0;
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/* let's see whether this adapter can support what we need */
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if (0 == i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WRITE_BYTE)) {
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return 0;
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}
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/* allocate memory for client structure */
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client = kmalloc(sizeof(struct i2c_client), GFP_KERNEL);
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if (!client) {
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return -ENOMEM;
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}
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/* fill client structure */
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memcpy(client, &client_template, sizeof(struct i2c_client));
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client->addr = address;
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client->adapter = adapter;
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/* tell the i2c layer a new client has arrived */
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if (0 != (err = i2c_attach_client(client))) {
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kfree(client);
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return err;
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}
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printk("tea6415c: detected @ 0x%02x on adapter %s\n", address, &client->adapter->name[0]);
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return 0;
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}
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static int attach(struct i2c_adapter *adapter)
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{
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/* let's see whether this is a know adapter we can attach to */
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if (adapter->id != I2C_HW_SAA7146) {
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dprintk("refusing to probe on unknown adapter [name='%s',id=0x%x]\n", adapter->name, adapter->id);
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return -ENODEV;
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}
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||||
return i2c_probe(adapter, &addr_data, &detect);
|
||||
}
|
||||
|
||||
static int detach(struct i2c_client *client)
|
||||
{
|
||||
int ret = i2c_detach_client(client);
|
||||
kfree(client);
|
||||
return ret;
|
||||
}
|
||||
|
||||
/* makes a connection between the input-pin 'i' and the output-pin 'o'
|
||||
for the tea6415c-client 'client' */
|
||||
static int switch_matrix(struct i2c_client *client, int i, int o)
|
||||
|
|
@ -110,7 +57,7 @@ static int switch_matrix(struct i2c_client *client, int i, int o)
|
|||
u8 byte = 0;
|
||||
int ret;
|
||||
|
||||
dprintk("adr:0x%02x, i:%d, o:%d\n", client->addr, i, o);
|
||||
v4l_dbg(1, debug, client, "i=%d, o=%d\n", i, o);
|
||||
|
||||
/* check if the pins are valid */
|
||||
if (0 == ((1 == i || 3 == i || 5 == i || 6 == i || 8 == i || 10 == i || 20 == i || 11 == i)
|
||||
|
|
@ -168,14 +115,14 @@ static int switch_matrix(struct i2c_client *client, int i, int o)
|
|||
|
||||
ret = i2c_smbus_write_byte(client, byte);
|
||||
if (ret) {
|
||||
dprintk("i2c_smbus_write_byte() failed, ret:%d\n", ret);
|
||||
v4l_dbg(1, debug, client,
|
||||
"i2c_smbus_write_byte() failed, ret:%d\n", ret);
|
||||
return -EIO;
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int command(struct i2c_client *client, unsigned int cmd, void *arg)
|
||||
static int tea6415c_command(struct i2c_client *client, unsigned cmd, void *arg)
|
||||
{
|
||||
struct tea6415c_multiplex *v = (struct tea6415c_multiplex *)arg;
|
||||
int result = 0;
|
||||
|
|
@ -187,38 +134,40 @@ static int command(struct i2c_client *client, unsigned int cmd, void *arg)
|
|||
default:
|
||||
return -ENOIOCTLCMD;
|
||||
}
|
||||
|
||||
return result;
|
||||
}
|
||||
|
||||
static struct i2c_driver driver = {
|
||||
.driver = {
|
||||
.name = "tea6415c",
|
||||
},
|
||||
.id = I2C_DRIVERID_TEA6415C,
|
||||
.attach_adapter = attach,
|
||||
.detach_client = detach,
|
||||
.command = command,
|
||||
};
|
||||
/* this function is called by i2c_probe */
|
||||
static int tea6415c_probe(struct i2c_client *client,
|
||||
const struct i2c_device_id *id)
|
||||
{
|
||||
/* let's see whether this adapter can support what we need */
|
||||
if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_WRITE_BYTE))
|
||||
return 0;
|
||||
|
||||
static struct i2c_client client_template = {
|
||||
v4l_info(client, "chip found @ 0x%x (%s)\n",
|
||||
client->addr << 1, client->adapter->name);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int tea6415c_legacy_probe(struct i2c_adapter *adapter)
|
||||
{
|
||||
/* Let's see whether this is a known adapter we can attach to.
|
||||
Prevents conflicts with tvaudio.c. */
|
||||
return adapter->id == I2C_HW_SAA7146;
|
||||
}
|
||||
|
||||
static const struct i2c_device_id tea6415c_id[] = {
|
||||
{ "tea6415c", 0 },
|
||||
{ }
|
||||
};
|
||||
MODULE_DEVICE_TABLE(i2c, tea6415c_id);
|
||||
|
||||
static struct v4l2_i2c_driver_data v4l2_i2c_data = {
|
||||
.name = "tea6415c",
|
||||
.driver = &driver,
|
||||
.driverid = I2C_DRIVERID_TEA6415C,
|
||||
.command = tea6415c_command,
|
||||
.probe = tea6415c_probe,
|
||||
.legacy_probe = tea6415c_legacy_probe,
|
||||
.id_table = tea6415c_id,
|
||||
};
|
||||
|
||||
static int __init this_module_init(void)
|
||||
{
|
||||
return i2c_add_driver(&driver);
|
||||
}
|
||||
|
||||
static void __exit this_module_exit(void)
|
||||
{
|
||||
i2c_del_driver(&driver);
|
||||
}
|
||||
|
||||
module_init(this_module_init);
|
||||
module_exit(this_module_exit);
|
||||
|
||||
MODULE_AUTHOR("Michael Hunold <michael@mihu.de>");
|
||||
MODULE_DESCRIPTION("tea6415c driver");
|
||||
MODULE_LICENSE("GPL");
|
||||
|
|
|
|||
|
|
@ -2,6 +2,7 @@
|
|||
tea6420 - i2c-driver for the tea6420 by SGS Thomson
|
||||
|
||||
Copyright (C) 1998-2003 Michael Hunold <michael@mihu.de>
|
||||
Copyright (C) 2008 Hans Verkuil <hverkuil@xs4all.nl>
|
||||
|
||||
The tea6420 is a bus controlled audio-matrix with 5 stereo inputs,
|
||||
4 stereo outputs and gain control for each output.
|
||||
|
|
@ -30,15 +31,18 @@
|
|||
#include <linux/module.h>
|
||||
#include <linux/ioctl.h>
|
||||
#include <linux/i2c.h>
|
||||
|
||||
#include <media/v4l2-common.h>
|
||||
#include <media/v4l2-i2c-drv-legacy.h>
|
||||
#include "tea6420.h"
|
||||
|
||||
static int debug; /* insmod parameter */
|
||||
module_param(debug, int, 0644);
|
||||
MODULE_PARM_DESC(debug, "Turn on/off device debugging (default:off).");
|
||||
MODULE_AUTHOR("Michael Hunold <michael@mihu.de>");
|
||||
MODULE_DESCRIPTION("tea6420 driver");
|
||||
MODULE_LICENSE("GPL");
|
||||
|
||||
#define dprintk(args...) \
|
||||
do { if (debug) { printk("%s: %s()[%d]: ", KBUILD_MODNAME, __func__, __LINE__); printk(args); } } while (0)
|
||||
static int debug;
|
||||
module_param(debug, int, 0644);
|
||||
|
||||
MODULE_PARM_DESC(debug, "Debug level (0-1)");
|
||||
|
||||
/* addresses to scan, found only at 0x4c and/or 0x4d (7-Bit) */
|
||||
static unsigned short normal_i2c[] = { I2C_ADDR_TEA6420_1, I2C_ADDR_TEA6420_2, I2C_CLIENT_END };
|
||||
|
|
@ -46,23 +50,20 @@ static unsigned short normal_i2c[] = { I2C_ADDR_TEA6420_1, I2C_ADDR_TEA6420_2, I
|
|||
/* magic definition of all other variables and things */
|
||||
I2C_CLIENT_INSMOD;
|
||||
|
||||
static struct i2c_driver driver;
|
||||
static struct i2c_client client_template;
|
||||
|
||||
/* make a connection between the input 'i' and the output 'o'
|
||||
with gain 'g' for the tea6420-client 'client' (note: i = 6 means 'mute') */
|
||||
static int tea6420_switch(struct i2c_client *client, int i, int o, int g)
|
||||
{
|
||||
u8 byte = 0;
|
||||
u8 byte;
|
||||
int ret;
|
||||
|
||||
dprintk("adr:0x%02x, i:%d, o:%d, g:%d\n", client->addr, i, o, g);
|
||||
v4l_dbg(1, debug, client, "i=%d, o=%d, g=%d\n", i, o, g);
|
||||
|
||||
/* check if the parameters are valid */
|
||||
if (i < 1 || i > 6 || o < 1 || o > 4 || g < 0 || g > 6 || g % 2 != 0)
|
||||
return -1;
|
||||
|
||||
byte = ((o - 1) << 5);
|
||||
byte = ((o - 1) << 5);
|
||||
byte |= (i - 1);
|
||||
|
||||
/* to understand this, have a look at the tea6420-specs (p.5) */
|
||||
|
|
@ -82,76 +83,14 @@ static int tea6420_switch(struct i2c_client *client, int i, int o, int g)
|
|||
|
||||
ret = i2c_smbus_write_byte(client, byte);
|
||||
if (ret) {
|
||||
dprintk("i2c_smbus_write_byte() failed, ret:%d\n", ret);
|
||||
v4l_dbg(1, debug, client,
|
||||
"i2c_smbus_write_byte() failed, ret:%d\n", ret);
|
||||
return -EIO;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* this function is called by i2c_probe */
|
||||
static int tea6420_detect(struct i2c_adapter *adapter, int address, int kind)
|
||||
{
|
||||
struct i2c_client *client;
|
||||
int err = 0, i = 0;
|
||||
|
||||
/* let's see whether this adapter can support what we need */
|
||||
if (0 == i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WRITE_BYTE)) {
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* allocate memory for client structure */
|
||||
client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
|
||||
if (!client) {
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
/* fill client structure */
|
||||
memcpy(client, &client_template, sizeof(struct i2c_client));
|
||||
client->addr = address;
|
||||
client->adapter = adapter;
|
||||
|
||||
/* tell the i2c layer a new client has arrived */
|
||||
if (0 != (err = i2c_attach_client(client))) {
|
||||
kfree(client);
|
||||
return err;
|
||||
}
|
||||
|
||||
/* set initial values: set "mute"-input to all outputs at gain 0 */
|
||||
err = 0;
|
||||
for (i = 1; i < 5; i++) {
|
||||
err += tea6420_switch(client, 6, i, 0);
|
||||
}
|
||||
if (err) {
|
||||
dprintk("could not initialize tea6420\n");
|
||||
kfree(client);
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
printk("tea6420: detected @ 0x%02x on adapter %s\n", address, &client->adapter->name[0]);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int attach(struct i2c_adapter *adapter)
|
||||
{
|
||||
/* let's see whether this is a know adapter we can attach to */
|
||||
if (adapter->id != I2C_HW_SAA7146) {
|
||||
dprintk("refusing to probe on unknown adapter [name='%s',id=0x%x]\n", adapter->name, adapter->id);
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
return i2c_probe(adapter, &addr_data, &tea6420_detect);
|
||||
}
|
||||
|
||||
static int detach(struct i2c_client *client)
|
||||
{
|
||||
int ret = i2c_detach_client(client);
|
||||
kfree(client);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int command(struct i2c_client *client, unsigned int cmd, void *arg)
|
||||
static int tea6420_command(struct i2c_client *client, unsigned cmd, void *arg)
|
||||
{
|
||||
struct tea6420_multiplex *a = (struct tea6420_multiplex *)arg;
|
||||
int result = 0;
|
||||
|
|
@ -167,34 +106,50 @@ static int command(struct i2c_client *client, unsigned int cmd, void *arg)
|
|||
return result;
|
||||
}
|
||||
|
||||
static struct i2c_driver driver = {
|
||||
.driver = {
|
||||
.name = "tea6420",
|
||||
},
|
||||
.id = I2C_DRIVERID_TEA6420,
|
||||
.attach_adapter = attach,
|
||||
.detach_client = detach,
|
||||
.command = command,
|
||||
};
|
||||
/* this function is called by i2c_probe */
|
||||
static int tea6420_probe(struct i2c_client *client,
|
||||
const struct i2c_device_id *id)
|
||||
{
|
||||
int err, i;
|
||||
|
||||
static struct i2c_client client_template = {
|
||||
/* let's see whether this adapter can support what we need */
|
||||
if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_WRITE_BYTE))
|
||||
return -EIO;
|
||||
|
||||
v4l_info(client, "chip found @ 0x%x (%s)\n",
|
||||
client->addr << 1, client->adapter->name);
|
||||
|
||||
/* set initial values: set "mute"-input to all outputs at gain 0 */
|
||||
err = 0;
|
||||
for (i = 1; i < 5; i++) {
|
||||
err += tea6420_switch(client, 6, i, 0);
|
||||
}
|
||||
if (err) {
|
||||
v4l_dbg(1, debug, client, "could not initialize tea6420\n");
|
||||
kfree(client);
|
||||
return -ENODEV;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int tea6420_legacy_probe(struct i2c_adapter *adapter)
|
||||
{
|
||||
/* Let's see whether this is a known adapter we can attach to.
|
||||
Prevents conflicts with tvaudio.c. */
|
||||
return adapter->id == I2C_HW_SAA7146;
|
||||
}
|
||||
|
||||
static const struct i2c_device_id tea6420_id[] = {
|
||||
{ "tea6420", 0 },
|
||||
{ }
|
||||
};
|
||||
MODULE_DEVICE_TABLE(i2c, tea6420_id);
|
||||
|
||||
static struct v4l2_i2c_driver_data v4l2_i2c_data = {
|
||||
.name = "tea6420",
|
||||
.driver = &driver,
|
||||
.driverid = I2C_DRIVERID_TEA6420,
|
||||
.command = tea6420_command,
|
||||
.probe = tea6420_probe,
|
||||
.legacy_probe = tea6420_legacy_probe,
|
||||
.id_table = tea6420_id,
|
||||
};
|
||||
|
||||
static int __init this_module_init(void)
|
||||
{
|
||||
return i2c_add_driver(&driver);
|
||||
}
|
||||
|
||||
static void __exit this_module_exit(void)
|
||||
{
|
||||
i2c_del_driver(&driver);
|
||||
}
|
||||
|
||||
module_init(this_module_init);
|
||||
module_exit(this_module_exit);
|
||||
|
||||
MODULE_AUTHOR("Michael Hunold <michael@mihu.de>");
|
||||
MODULE_DESCRIPTION("tea6420 driver");
|
||||
MODULE_LICENSE("GPL");
|
||||
|
|
|
|||
Loading…
Reference in a new issue