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[PATCH] dvb: determine tuner write method based on nxt chip

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- Add support for AVerTVHD MCE a180.
- Instead of determining how to write to the tuner based on which NIM
  is being used, make this determination based on whether the chip is a
  NXT2002 or NXT2004.
- If NXT2004, write directly to tuner. If NXT2002, write through NXT chip.

Signed-off-by: Michael Krufky <mkrufky@m1k.net>
Cc: Johannes Stezenbach <js@linuxtv.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Michael Krufky 2005-11-08 21:35:49 -08:00 committed by Linus Torvalds
parent 6d35ae3d11
commit f0fa86a574
1 changed files with 44 additions and 38 deletions
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82
drivers/media/dvb/frontends/nxt200x.c
View file

@ -342,50 +342,56 @@ static int nxt200x_writetuner (struct nxt200x_state* state, u8* data)
dprintk("Tuner Bytes: %02X %02X %02X %02X\n", data[0], data[1], data[2], data[3]);
/* if pll is a Philips TUV1236D then write directly to tuner */
if (strcmp(state->config->pll_desc->name, "Philips TUV1236D") == 0) {
if (i2c_writebytes(state, state->config->pll_address, data, 4))
printk(KERN_WARNING "nxt200x: error writing to tuner\n");
/* wait until we have a lock */
while (count < 20) {
i2c_readbytes(state, state->config->pll_address, &buf, 1);
if (buf & 0x40)
return 0;
msleep(100);
count++;
}
printk("nxt200x: timeout waiting for tuner lock\n");
return 0;
} else {
/* set the i2c transfer speed to the tuner */
buf = 0x03;
nxt200x_writebytes(state, 0x20, &buf, 1);
/* if NXT2004, write directly to tuner. if NXT2002, write through NXT chip.
* direct write is required for Philips TUV1236D and ALPS TDHU2 */
switch (state->demod_chip) {
case NXT2004:
if (i2c_writebytes(state, state->config->pll_address, data, 4))
printk(KERN_WARNING "nxt200x: error writing to tuner\n");
/* wait until we have a lock */
while (count < 20) {
i2c_readbytes(state, state->config->pll_address, &buf, 1);
if (buf & 0x40)
return 0;
msleep(100);
count++;
}
printk("nxt2004: timeout waiting for tuner lock\n");
break;
case NXT2002:
/* set the i2c transfer speed to the tuner */
buf = 0x03;
nxt200x_writebytes(state, 0x20, &buf, 1);
/* setup to transfer 4 bytes via i2c */
buf = 0x04;
nxt200x_writebytes(state, 0x34, &buf, 1);
/* setup to transfer 4 bytes via i2c */
buf = 0x04;
nxt200x_writebytes(state, 0x34, &buf, 1);
/* write actual tuner bytes */
nxt200x_writebytes(state, 0x36, data, 4);
/* write actual tuner bytes */
nxt200x_writebytes(state, 0x36, data, 4);
/* set tuner i2c address */
buf = state->config->pll_address;
nxt200x_writebytes(state, 0x35, &buf, 1);
/* set tuner i2c address */
buf = state->config->pll_address;
nxt200x_writebytes(state, 0x35, &buf, 1);
/* write UC Opmode to begin transfer */
buf = 0x80;
nxt200x_writebytes(state, 0x21, &buf, 1);
/* write UC Opmode to begin transfer */
buf = 0x80;
nxt200x_writebytes(state, 0x21, &buf, 1);
while (count < 20) {
nxt200x_readbytes(state, 0x21, &buf, 1);
if ((buf & 0x80)== 0x00)
return 0;
msleep(100);
count++;
}
printk("nxt200x: timeout error writing tuner\n");
return 0;
while (count < 20) {
nxt200x_readbytes(state, 0x21, &buf, 1);
if ((buf & 0x80)== 0x00)
return 0;
msleep(100);
count++;
}
printk("nxt2002: timeout error writing tuner\n");
break;
default:
return -EINVAL;
break;
}
return 0;
}
static void nxt200x_agc_reset(struct nxt200x_state* state)