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authorMichael Krufky <mkrufky@m1k.net>2005-11-08 21:35:49 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2005-11-09 07:56:05 -0800
commitf0fa86a574843264bdcbed4c84b41a2778861fde (patch)
treef3974c580155375183ef8283620d89b40462d39f /drivers/media/dvb
parent6d35ae3d1137c92a315b7ff10aecd45b1f37d99e (diff)
[PATCH] dvb: determine tuner write method based on nxt chip
- 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>
Diffstat (limited to 'drivers/media/dvb')
-rw-r--r--drivers/media/dvb/frontends/nxt200x.c82
1 files changed, 44 insertions, 38 deletions
diff --git a/drivers/media/dvb/frontends/nxt200x.c b/drivers/media/dvb/frontends/nxt200x.c
index 97ee8017dac..aee170805ca 100644
--- a/drivers/media/dvb/frontends/nxt200x.c
+++ b/drivers/media/dvb/frontends/nxt200x.c
@@ -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)