summaryrefslogtreecommitdiffstats
path: root/drivers/media/dvb-frontends/rtl2832.c
Commit message (Collapse)AuthorAgeFilesLines
* [media] dvb-frontends: Don't use dynamic static allocationMauro Carvalho Chehab2013-11-081-2/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | Dynamic static allocation is evil, as Kernel stack is too low, and compilation complains about it on some archs: drivers/media/dvb-frontends/af9013.c:77:1: warning: 'af9013_wr_regs_i2c' uses dynamic stack allocation [enabled by default] drivers/media/dvb-frontends/af9033.c:188:1: warning: 'af9033_wr_reg_val_tab' uses dynamic stack allocation [enabled by default] drivers/media/dvb-frontends/af9033.c:68:1: warning: 'af9033_wr_regs' uses dynamic stack allocation [enabled by default] drivers/media/dvb-frontends/bcm3510.c:230:1: warning: 'bcm3510_do_hab_cmd' uses dynamic stack allocation [enabled by default] drivers/media/dvb-frontends/cxd2820r_core.c:84:1: warning: 'cxd2820r_rd_regs_i2c.isra.1' uses dynamic stack allocation [enabled by default] drivers/media/dvb-frontends/rtl2830.c:56:1: warning: 'rtl2830_wr' uses dynamic stack allocation [enabled by default] drivers/media/dvb-frontends/rtl2832.c:187:1: warning: 'rtl2832_wr' uses dynamic stack allocation [enabled by default] drivers/media/dvb-frontends/tda10071.c:52:1: warning: 'tda10071_wr_regs' uses dynamic stack allocation [enabled by default] drivers/media/dvb-frontends/tda10071.c:84:1: warning: 'tda10071_rd_regs' uses dynamic stack allocation [enabled by default] Instead, let's enforce a limit for the buffer. Considering that I2C transfers are generally limited, and that devices used on USB has a max data length of 64 bytes for the control URBs. So, it seem safe to use 64 bytes as the hard limit for all those devices. On most cases, the limit is a way lower than that, but this limit is small enough to not affect the Kernel stack, and it is a no brain limit, as using smaller ones would require to either carefully each driver or to take a look on each datasheet. Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com> Reviewed-by: Hans Verkuil <hans.verkuil@cisco.com> Reviewed-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
* [media] rtl2832: add new tuner R828DAntti Palosaari2013-10-311-0/+1
| | | | | | | Use R820T config for R828D too as those are about same tuner. Signed-off-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
* [media] rtl2832: Fix IF calculusMauro Carvalho Chehab2013-04-161-0/+4
| | | | | | | | Spectrum is inverted. So, we need to invert it when calculating the value for the IF register Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com> Tested-by: Antti Palosaari <crope@iki.fi>
* [media] rtl2832: properly set en_bbin for r820tMauro Carvalho Chehab2013-04-161-32/+31
| | | | | | | | DVBT_EN_BBIN should be set on both places where IF is set. So, move it to a function and call it where needed. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com> Tested-by: Antti Palosaari <crope@iki.fi>
* [media] rtl2832: add code to bind r820t on itMauro Carvalho Chehab2013-04-161-17/+59
| | | | | | | | There are some init stuff to be done for each new tuner at the demod code. Add the code there for r820t. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com> Tested-by: Antti Palosaari <crope@iki.fi>
* [media] rtl2832: get rid of warning: no previous prototypeMauro Carvalho Chehab2012-10-271-3/+3
| | | | | | | | drivers/media/dvb-frontends/rtl2832.c:268:5: warning: no previous prototype for 'rtl2832_rd_demod_reg' [-Wmissing-prototypes] drivers/media/dvb-frontends/rtl2832.c:308:5: warning: no previous prototype for 'rtl2832_wr_demod_reg' [-Wmissing-prototypes] drivers/media/dvb-frontends/rtl2832.c:513:5: warning: no previous prototype for 'rtl2832_get_tune_settings' [-Wmissing-prototypes] Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* [media] rtl2832: add configuration for e4000 tunerAntti Palosaari2012-09-271-0/+4
| | | | | Signed-off-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* [media] rtl2832: use dev_foo() loggingAntti Palosaari2012-09-231-32/+32
| | | | | Signed-off-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* [media] rtl2832: support for tua9001 tunerAntti Palosaari2012-09-231-3/+5
| | | | | Signed-off-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* [media] rtl2832: separate tuner specific init from generalAntti Palosaari2012-09-231-35/+23
| | | | | | | It is first step closer to support multiple tuners. Signed-off-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* [media] rtl2832: implement .read_ber()Antti Palosaari2012-09-151-0/+19
| | | | | | | | Implementation taken from rtl2830. Cc: Thomas Mair <thomas.mair86@googlemail.com> Signed-off-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* [media] rtl2832: implement .read_snr()Antti Palosaari2012-09-151-3/+49
| | | | | | | | Based rtl2830 implementation. Cc: Thomas Mair <thomas.mair86@googlemail.com> Signed-off-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* [media] rtl2832: implement .get_frontend()Antti Palosaari2012-09-151-0/+113
| | | | | | | | Copied from rtl2830. Cc: Thomas Mair <thomas.mair86@googlemail.com> Signed-off-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* [media] rtl2832: remove dummy callback implementationsAntti Palosaari2012-09-101-29/+0
| | | | | | | Let the dvb-frontend return -ENOTTY for those unimplemented IOCTLs. Signed-off-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* [media] move the dvb/frontends to drivers/media/dvb-frontendsMauro Carvalho Chehab2012-08-131-0/+789
Raise the DVB frontends one level up, as the intention is to remove the drivers/media/dvb directory. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
OpenPOWER on IntegriCloud