I have been working on the driver over the past days and been making some progress. Right now I am stuck with a small problem that I have no idea how to deal with.
It seems that the fc0012 tuner supports V-Band and U-Band. To switch between those modes a GPIO output value needs to be changed. In the original Realtek driver this is done at the beginning of the set_parameters callback. Is there a different callback that can be used for this or is it ok to write a RTL2832u register from the demodulator code? Regards Thomas 2012/4/12 Antti Palosaari <cr...@iki.fi>: > On 12.04.2012 15:54, Thomas Mair wrote: >> >> It is not my driver ;) And at the beginning it looks quite scary but >> it may help together with the dump. You can find it >> >> here:https://github.com/tmair/DVB-Realtek-RTL2832U-2.2.2-10tuner-mod_kernel-3.0.0/blob/master/RTL2832-2.2.2_kernel-3.0.0/tuner_fc2580.c >> >> 2012/4/12 Oliver Schinagl<oliver+l...@schinagl.nl>: >>> >>> I accept the challenge :p but where is your fc2580 driver? And in that >>> thought, where is antti's stub driver :) >>> >>> That might help me get started :) >>> >>> On 12-04-12 14:18, Thomas Mair wrote: >>>> >>>> >>>> Hi Oliver, >>>> >>>> the Realtek driver sources I have also contain a fc2580 driver. Maybe >>>> the source code will help you together with the usb sniff. >>>> >>>> 2012/4/12 Oliver Schinagl<oliver+l...@schinagl.nl>: >>>>> >>>>> >>>>> Would love to, even tried a bit, but don't really know how to start, >>>>> what >>>>> to use as a template. I think I can extract the i2c messages from the >>>>> dreaded ugly af903 driver however, using src or usbsniff. >>>>> >>>>> On 11-04-12 23:57, Antti Palosaari wrote: >>>>>> >>>>>> >>>>>> On 12.04.2012 00:33, Oliver Schinagl wrote: >>>>>>> >>>>>>> >>>>>>> On 04/11/12 21:12, Antti Palosaari wrote: >>>>>>>> >>>>>>>> >>>>>>>> I have some old stubbed drivers that just works for one frequency >>>>>>>> using >>>>>>>> combination of RTL2832U + FC2580. Also I have rather well commented >>>>>>>> USB >>>>>>>> sniff from that device. I can sent those if you wish. >>>>>>>> >>>>>>> FC2580? Do you have anything for/from that driver? My USB stick as an >>>>>>> AFA9035 based one, using that specific tuner. >>>>>> >>>>>> >>>>>> >>>>>> Nothing but stubbed driver that contains static register values taken >>>>>> from >>>>>> the sniff and it just tunes to one channel (IIRC 634 MHz / 8 MHz BW). >>>>>> >>>>>> Feel free to contribute new tuner driver in order to add support for >>>>>> your >>>>>> AF9035 device. > > > Here are my sniffs and stubbed driver etc. what I found from the HD. Those > well commented sniffs, both RTL2831U and RTL2832U, are surely most valuable > material. > > http://palosaari.fi/linux/v4l-dvb/rtl283xu/ > > FC2580 can be found from both AF9035 and RTL2832U codes. > > Generally, as coding new demod driver for example, you want to use that kind > of stubbed tuner "driver" for example: > > > /* FC0011: 634 MHz / BW 8 MHz */ > struct { > u8 r[8]; > int len; > } regs[] = { > {{ 0x07, 0x0f }, 2 }, > {{ 0x08, 0x3e }, 2 }, > {{ 0x0a, 0xb8 }, 2 }, > {{ 0x0b, 0x80 }, 2 }, > {{ 0x0d, 0x04 }, 2 }, > {{ 0x00, 0x00, 0x05, 0x11, 0xf1, 0xc7, 0x0a, 0x30 }, 8 }, > {{ 0x0e, 0x80 }, 2 }, > {{ 0x0e, 0x00 }, 2 }, > {{ 0x0e, 0x00 }, 2 }, > {{ 0x0e }, 1 }, > {{ 0x06, 0x30 }, 2 }, > {{ 0x0d }, 1 }, > {{ 0x0d, 0x14 }, 2 }, > {{ 0x10, 0x0b }, 2 }, > }; > > for (i = 0; i < ARRAY_SIZE(regs); i++) { > pr_debug("%s: i=%d len=%d data=%02x\n", __func__, i, > regs[i].len, regs[i].r[0]); > struct i2c_msg msg[1] = { > { > .addr = 0x60, > .flags = 0, > .len = regs[i].len, > .buf = regs[i].r, > } > }; > ret = i2c_transfer(state->i2c, msg, 1); > if (ret != 1) > pr_debug("%s: I2C write failed i=%d len=%d > data=%02x\n", __func__, i, regs[i].len, regs[i].r[0]); > } > > > regards > Antti > -- > http://palosaari.fi/ -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
