8bf2f8e747
Cleanup audio input handling in bttv and tvaudio: - inputs were specified that were never used - mute was handled as a special input which led to confusing code - confusing naming made it difficult to see if the setting was for i2c or gpio. The old audiochip.h input names moved to tvaudio.h. Currently this is used both by tvaudio and msp3400 until the msp3400 implements the new msp3400-specific inputs. Detect in bttv the tvaudio and msp3400 i2c clients and use these client pointers to set the inputs directly instead of broadcasting the command. Removed AUDC_SET_INPUT. Now replaced by VIDIOC_S_AUDIO. This will be replaced again later by the new ROUTING commands. Removed VIDIOC_G_AUDIO implementations in i2c drivers: this command is a user level command and not to be used internally. It wasn't called at all anyway. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
265 lines
6.3 KiB
C
265 lines
6.3 KiB
C
/* Driver for Bt832 CMOS Camera Video Processor
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i2c-addresses: 0x88 or 0x8a
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The BT832 interfaces to a Quartzsight Digital Camera (352x288, 25 or 30 fps)
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via a 9 pin connector ( 4-wire SDATA, 2-wire i2c, SCLK, VCC, GND).
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It outputs an 8-bit 4:2:2 YUV or YCrCb video signal which can be directly
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connected to bt848/bt878 GPIO pins on this purpose.
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(see: VLSI Vision Ltd. www.vvl.co.uk for camera datasheets)
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Supported Cards:
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- Pixelview Rev.4E: 0x8a
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GPIO 0x400000 toggles Bt832 RESET, and the chip changes to i2c 0x88 !
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(c) Gunther Mayer, 2002
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STATUS:
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- detect chip and hexdump
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- reset chip and leave low power mode
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- detect camera present
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TODO:
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- make it work (find correct setup for Bt832 and Bt878)
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/i2c.h>
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#include <linux/types.h>
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#include <linux/videodev.h>
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#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/slab.h>
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#include <media/v4l2-common.h>
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#include "bttv.h"
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#include "bt832.h"
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MODULE_LICENSE("GPL");
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/* Addresses to scan */
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static unsigned short normal_i2c[] = { I2C_ADDR_BT832_ALT1>>1, I2C_ADDR_BT832_ALT2>>1,
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I2C_CLIENT_END };
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I2C_CLIENT_INSMOD;
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int debug; /* debug output */
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module_param(debug, int, 0644);
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/* ---------------------------------------------------------------------- */
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static int bt832_detach(struct i2c_client *client);
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static struct i2c_driver driver;
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static struct i2c_client client_template;
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struct bt832 {
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struct i2c_client client;
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};
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int bt832_hexdump(struct i2c_client *i2c_client_s, unsigned char *buf)
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{
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int i,rc;
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buf[0]=0x80; // start at register 0 with auto-increment
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if (1 != (rc = i2c_master_send(i2c_client_s,buf,1)))
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v4l_err(i2c_client_s,"i2c i/o error: rc == %d (should be 1)\n",rc);
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for(i=0;i<65;i++)
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buf[i]=0;
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if (65 != (rc=i2c_master_recv(i2c_client_s,buf,65)))
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v4l_err(i2c_client_s,"i2c i/o error: rc == %d (should be 65)\n",rc);
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// Note: On READ the first byte is the current index
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// (e.g. 0x80, what we just wrote)
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if(debug>1) {
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int i;
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v4l_dbg(2, debug,i2c_client_s,"hexdump:");
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for(i=1;i<65;i++) {
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if(i!=1) {
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if(((i-1)%8)==0) printk(" ");
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if(((i-1)%16)==0) {
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printk("\n");
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v4l_dbg(2, debug,i2c_client_s,"hexdump:");
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}
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}
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printk(" %02x",buf[i]);
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}
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printk("\n");
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}
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return 0;
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}
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// Return: 1 (is a bt832), 0 (No bt832 here)
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int bt832_init(struct i2c_client *i2c_client_s)
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{
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unsigned char *buf;
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int rc;
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buf=kmalloc(65,GFP_KERNEL);
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bt832_hexdump(i2c_client_s,buf);
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if(buf[0x40] != 0x31) {
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v4l_err(i2c_client_s,"This i2c chip is no bt832 (id=%02x). Detaching.\n",buf[0x40]);
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kfree(buf);
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return 0;
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}
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v4l_err(i2c_client_s,"Write 0 tp VPSTATUS\n");
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buf[0]=BT832_VP_STATUS; // Reg.52
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buf[1]= 0x00;
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if (2 != (rc = i2c_master_send(i2c_client_s,buf,2)))
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v4l_err(i2c_client_s,"i2c i/o error VPS: rc == %d (should be 2)\n",rc);
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bt832_hexdump(i2c_client_s,buf);
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// Leave low power mode:
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v4l_err(i2c_client_s,"leave low power mode.\n");
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buf[0]=BT832_CAM_SETUP0; //0x39 57
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buf[1]=0x08;
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if (2 != (rc = i2c_master_send(i2c_client_s,buf,2)))
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v4l_err(i2c_client_s,"i2c i/o error LLPM: rc == %d (should be 2)\n",rc);
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bt832_hexdump(i2c_client_s,buf);
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v4l_info(i2c_client_s,"Write 0 tp VPSTATUS\n");
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buf[0]=BT832_VP_STATUS; // Reg.52
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buf[1]= 0x00;
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if (2 != (rc = i2c_master_send(i2c_client_s,buf,2)))
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v4l_err(i2c_client_s,"i2c i/o error VPS: rc == %d (should be 2)\n",rc);
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bt832_hexdump(i2c_client_s,buf);
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// Enable Output
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v4l_info(i2c_client_s,"Enable Output\n");
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buf[0]=BT832_VP_CONTROL1; // Reg.40
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buf[1]= 0x27 & (~0x01); // Default | !skip
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if (2 != (rc = i2c_master_send(i2c_client_s,buf,2)))
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v4l_err(i2c_client_s,"i2c i/o error EO: rc == %d (should be 2)\n",rc);
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bt832_hexdump(i2c_client_s,buf);
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// for testing (even works when no camera attached)
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v4l_info(i2c_client_s,"*** Generate NTSC M Bars *****\n");
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buf[0]=BT832_VP_TESTCONTROL0; // Reg. 42
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buf[1]=3; // Generate NTSC System M bars, Generate Frame timing internally
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if (2 != (rc = i2c_master_send(i2c_client_s,buf,2)))
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v4l_info(i2c_client_s,"i2c i/o error MBAR: rc == %d (should be 2)\n",rc);
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v4l_info(i2c_client_s,"Camera Present: %s\n",
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(buf[1+BT832_CAM_STATUS] & BT832_56_CAMERA_PRESENT) ? "yes":"no");
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bt832_hexdump(i2c_client_s,buf);
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kfree(buf);
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return 1;
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}
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static int bt832_attach(struct i2c_adapter *adap, int addr, int kind)
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{
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struct bt832 *t;
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client_template.adapter = adap;
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client_template.addr = addr;
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if (NULL == (t = kzalloc(sizeof(*t), GFP_KERNEL)))
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return -ENOMEM;
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t->client = client_template;
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i2c_set_clientdata(&t->client, t);
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i2c_attach_client(&t->client);
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v4l_info(&t->client,"chip found @ 0x%x\n", addr<<1);
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if(! bt832_init(&t->client)) {
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bt832_detach(&t->client);
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return -1;
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}
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return 0;
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}
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static int bt832_probe(struct i2c_adapter *adap)
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{
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if (adap->class & I2C_CLASS_TV_ANALOG)
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return i2c_probe(adap, &addr_data, bt832_attach);
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return 0;
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}
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static int bt832_detach(struct i2c_client *client)
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{
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struct bt832 *t = i2c_get_clientdata(client);
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v4l_info(&t->client,"dettach\n");
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i2c_detach_client(client);
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kfree(t);
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return 0;
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}
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static int
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bt832_command(struct i2c_client *client, unsigned int cmd, void *arg)
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{
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struct bt832 *t = i2c_get_clientdata(client);
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if (debug>1)
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v4l_i2c_print_ioctl(&t->client,cmd);
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switch (cmd) {
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case BT832_HEXDUMP: {
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unsigned char *buf;
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buf=kmalloc(65,GFP_KERNEL);
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bt832_hexdump(&t->client,buf);
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kfree(buf);
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}
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break;
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case BT832_REATTACH:
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v4l_info(&t->client,"re-attach\n");
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i2c_del_driver(&driver);
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i2c_add_driver(&driver);
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break;
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}
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return 0;
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}
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/* ----------------------------------------------------------------------- */
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static struct i2c_driver driver = {
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.driver = {
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.name = "bt832",
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},
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.id = 0, /* FIXME */
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.attach_adapter = bt832_probe,
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.detach_client = bt832_detach,
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.command = bt832_command,
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};
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static struct i2c_client client_template =
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{
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.name = "bt832",
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.driver = &driver,
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};
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static int __init bt832_init_module(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 bt832_cleanup_module(void)
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{
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i2c_del_driver(&driver);
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}
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module_init(bt832_init_module);
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module_exit(bt832_cleanup_module);
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/*
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* Overrides for Emacs so that we follow Linus's tabbing style.
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* ---------------------------------------------------------------------------
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* Local variables:
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* c-basic-offset: 8
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* End:
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*/
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