diff options
| author | Antti Palosaari <crope@iki.fi> | 2012-07-20 01:28:56 (GMT) |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-10-01 20:07:05 (GMT) |
| commit | 13a5336e88b5b23047db643bb9cac2cef7548c6c (patch) | |
| tree | 2ea4ef2381e6f7cf2d0bbf2394d56635f37ac366 /drivers/media/usb | |
| parent | aa3c598b008782afd9b7c4ccef670d114786cece (diff) | |
| download | linux-13a5336e88b5b23047db643bb9cac2cef7548c6c.tar.xz | |
[media] em28xx: implement FE set_lna() callback
Make LNA run-time switching possible for PCTV nanoStick T2 290e!
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/usb')
| -rw-r--r-- | drivers/media/usb/em28xx/em28xx-dvb.c | 41 |
1 files changed, 36 insertions, 5 deletions
diff --git a/drivers/media/usb/em28xx/em28xx-dvb.c b/drivers/media/usb/em28xx/em28xx-dvb.c index 34c5ea9..3e5c42d 100644 --- a/drivers/media/usb/em28xx/em28xx-dvb.c +++ b/drivers/media/usb/em28xx/em28xx-dvb.c @@ -81,6 +81,7 @@ struct em28xx_dvb { int (*gate_ctrl)(struct dvb_frontend *, int); struct semaphore pll_mutex; bool dont_attach_fe1; + int lna_gpio; }; @@ -568,6 +569,33 @@ static void pctv_520e_init(struct em28xx *dev) i2c_master_send(&dev->i2c_client, regs[i].r, regs[i].len); }; +static int em28xx_pctv_290e_set_lna(struct dvb_frontend *fe, int val) +{ + struct em28xx *dev = fe->dvb->priv; +#ifdef CONFIG_GPIOLIB + struct em28xx_dvb *dvb = dev->dvb; + int ret; + unsigned long flags; + + if (val) + flags = GPIOF_OUT_INIT_LOW; + else + flags = GPIOF_OUT_INIT_HIGH; + + ret = gpio_request_one(dvb->lna_gpio, flags, NULL); + if (ret) + em28xx_errdev("gpio request failed %d\n", ret); + else + gpio_free(dvb->lna_gpio); + + return ret; +#else + dev_warn(&dev->udev->dev, "%s: LNA control is disabled\n", + KBUILD_MODNAME); + return 0; +#endif +} + static int em28xx_mt352_terratec_xs_init(struct dvb_frontend *fe) { /* Values extracted from a USB trace of the Terratec Windows driver */ @@ -809,7 +837,7 @@ static void em28xx_unregister_dvb(struct em28xx_dvb *dvb) static int em28xx_dvb_init(struct em28xx *dev) { - int result = 0, mfe_shared = 0, gpio_chip_base; + int result = 0, mfe_shared = 0; struct em28xx_dvb *dvb; if (!dev->board.has_dvb) { @@ -958,7 +986,7 @@ static int em28xx_dvb_init(struct em28xx *dev) dvb->fe[0] = dvb_attach(cxd2820r_attach, &em28xx_cxd2820r_config, &dev->i2c_adap, - &gpio_chip_base); + &dvb->lna_gpio); if (dvb->fe[0]) { /* FE 0 attach tuner */ if (!dvb_attach(tda18271_attach, @@ -973,15 +1001,18 @@ static int em28xx_dvb_init(struct em28xx *dev) } } +#ifdef CONFIG_GPIOLIB /* enable LNA for DVB-T, DVB-T2 and DVB-C */ - result = gpio_request_one(gpio_chip_base, GPIOF_INIT_LOW, - "LNA"); + result = gpio_request_one(dvb->lna_gpio, GPIOF_OUT_INIT_LOW, + NULL); if (result) em28xx_errdev("gpio request failed %d\n", result); else - gpio_free(gpio_chip_base); + gpio_free(dvb->lna_gpio); result = 0; /* continue even set LNA fails */ +#endif + dvb->fe[0]->ops.set_lna = em28xx_pctv_290e_set_lna; break; case EM2884_BOARD_HAUPPAUGE_WINTV_HVR_930C: { |