[media] em28xx: support for 2013:0251 PCTV QuatroStick nano (520e)
Hardware is based of:
Empia EM2884
Micronas DRX 3926K
NXP TDA18271HDC2
... + analog parts.
Analog is not supported currently. Only DVB-T and DVB-C.
There seems to be still problems for locking DVB-C channels which have
strong signal. Attenuator helps. I think it is demodulator IF/RF AGC
issue. Lets fix it later. Patches are welcome.
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/video/em28xx/em28xx-dvb.c b/drivers/media/video/em28xx/em28xx-dvb.c
index 0b3e301..398d713 100644
--- a/drivers/media/video/em28xx/em28xx-dvb.c
+++ b/drivers/media/video/em28xx/em28xx-dvb.c
@@ -331,6 +331,13 @@
.no_i2c_bridge = 1,
};
+struct drxk_config pctv_520e_drxk = {
+ .adr = 0x29,
+ .single_master = 1,
+ .microcode_name = "dvb-demod-drxk-pctv.fw",
+ .chunk_size = 58,
+};
+
static int drxk_gate_ctrl(struct dvb_frontend *fe, int enable)
{
struct em28xx_dvb *dvb = fe->sec_priv;
@@ -464,6 +471,33 @@
em28xx_gpio_set(dev, terratec_h5_end);
};
+static void pctv_520e_init(struct em28xx *dev)
+{
+ /*
+ * Init TDA8295(?) analog demodulator. Looks like I2C traffic to
+ * digital demodulator and tuner are routed via TDA8295.
+ */
+ int i;
+ struct {
+ unsigned char r[4];
+ int len;
+ } regs[] = {
+ {{ 0x06, 0x02, 0x00, 0x31 }, 4},
+ {{ 0x01, 0x02 }, 2},
+ {{ 0x01, 0x02, 0x00, 0xc6 }, 4},
+ {{ 0x01, 0x00 }, 2},
+ {{ 0x01, 0x00, 0xff, 0xaf }, 4},
+ {{ 0x01, 0x00, 0x03, 0xa0 }, 4},
+ {{ 0x01, 0x00 }, 2},
+ {{ 0x01, 0x00, 0x73, 0xaf }, 4},
+ };
+
+ dev->i2c_client.addr = 0x82 >> 1; /* 0x41 */
+
+ for (i = 0; i < ARRAY_SIZE(regs); i++)
+ i2c_master_send(&dev->i2c_client, regs[i].r, regs[i].len);
+};
+
static int em28xx_mt352_terratec_xs_init(struct dvb_frontend *fe)
{
/* Values extracted from a USB trace of the Terratec Windows driver */
@@ -965,6 +999,24 @@
"driver version\n");
break;
+ case EM2884_BOARD_PCTV_520E:
+ pctv_520e_init(dev);
+
+ /* attach demodulator */
+ dvb->fe[0] = dvb_attach(drxk_attach, &pctv_520e_drxk,
+ &dev->i2c_adap);
+
+ if (dvb->fe[0]) {
+ /* attach tuner */
+ if (!dvb_attach(tda18271_attach, dvb->fe[0], 0x60,
+ &dev->i2c_adap,
+ &em28xx_cxd2820r_tda18271_config)) {
+ dvb_frontend_detach(dvb->fe[0]);
+ result = -EINVAL;
+ goto out_free;
+ }
+ }
+ break;
default:
em28xx_errdev("/2: The frontend of your DVB/ATSC card"
" isn't supported yet\n");