En/na Luca Olivetti ha escrit:
En/na Olaf Titz ha escrit:
(Btw. once tuned, the actual hardware seems to not care about the tuner
module at all, I can stop tzap, lose lock due to disconnected antenna,
etc. and the demuxer doesn't stop streaming. Is this intentional,
hardware limitation, or what?)
I have no idea. I can only say that I have a af9005_fe_sleep function
that supposedly turns off the tuner, though I never turn it on again and
it still works.
I also see from the reference code that there's a power control function
that I didn't implement (don't ask me why, I don't remember). I can try
to implement it but not today.
Well, the reference code doesn't work at all: as soon as I write to any
of these register the usb communication stops (bulk timeout), and I
tried one by one. Here's the code for you to play with, disabled with an
#ifdef 0
Bye
--
Luca
diff -r 76b92a337aec linux/drivers/media/dvb/dvb-usb/af9005.c
--- a/linux/drivers/media/dvb/dvb-usb/af9005.c Wed Jun 13 15:11:15 2007 -0300
+++ b/linux/drivers/media/dvb/dvb-usb/af9005.c Fri Jun 15 21:17:34 2007 +0200
@@ -921,7 +921,73 @@ static int af9005_rc_query(struct dvb_us
static int af9005_power_ctrl(struct dvb_usb_device *d, int onoff)
{
-
+#if 0
+ /* as soon as any of these register is written to, either for powering
+ up or down, the sticks stops responding to usb bulk messages */
+ int ret;
+ u8 temp;
+ deb_info("af9005_power_ctrl %d\n", onoff);
+ if (onoff) {
+ /* resume OFSM clock */
+ ret = af9005_write_ofdm_register(d, xd_g_reg_ofsm_clk, 0);
+ if (ret)
+ return ret;
+ /* power on ADC */
+ ret = af9005_write_ofdm_register(d, 0xb200, 0xa1);
+ if (ret)
+ return ret;
+ /* release OFSM reset */
+ ret =
+ af9005_write_register_bits(d, xd_I2C_reg_ofdm_rst,
+ reg_ofdm_rst_pos,
+ reg_ofdm_rst_len, 0);
+ if (ret)
+ return ret;
+ /* disable OFDM reset */
+ ret =
+ af9005_write_register_bits(d, xd_I2C_reg_ofdm_rst_en,
+ reg_ofdm_rst_en_pos,
+ reg_ofdm_rst_en_len, 0);
+ if (ret)
+ return ret;
+
+ } else {
+ /* enable OFDM reset */
+ ret =
+ af9005_write_register_bits(d, xd_I2C_reg_ofdm_rst_en,
+ reg_ofdm_rst_en_pos,
+ reg_ofdm_rst_en_len, 1);
+ if (ret)
+ return ret;
+ /* OFSM reset */
+ ret = af9005_write_ofdm_register(d, 0xaeff, 0);
+ if (ret)
+ return ret;
+ */
+ /* wait for OFSM reset completed */
+ while (1) {
+ ret =
+ af9005_read_register_bits(d, xd_I2C_reg_ofdm_rst,
+ reg_ofdm_rst_pos,
+ reg_ofdm_rst_len, &temp);
+ if (ret)
+ return ret;
+ if (temp)
+ break;
+ msleep(10);
+ }
+ /* power down ADC */
+ ret = af9005_write_ofdm_register(d, 0xb200, 0xa9);
+ if (ret)
+ return ret;
+ /* slow down OFSM clock */
+ printk("slow down ofsm clock");
+ ret = af9005_write_ofdm_register(d, xd_g_reg_ofsm_clk, 7);
+ if (ret)
+ return ret;
+ }
+ deb_info("af9005_power_ctrl ok\n");
+#endif
return 0;
}
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