From a45c2994d5980ad53234589935df15e4f6682704 Mon Sep 17 00:00:00 2001 From: Olli Salonen Date: Thu, 21 Aug 2014 09:05:01 -0300 Subject: [PATCH] [media] cxusb: Add read_mac_address for TT CT2-4400 and CT2-4650 Read MAC address from the EEPROM. This version two corrects a flaw in the result code returning that did exist in the first version. Signed-off-by: Olli Salonen Reviewed-by: Antti Palosaari Signed-off-by: Antti Palosaari Signed-off-by: Mauro Carvalho Chehab --- drivers/media/usb/dvb-usb/cxusb.c | 35 +++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) diff --git a/drivers/media/usb/dvb-usb/cxusb.c b/drivers/media/usb/dvb-usb/cxusb.c index 4ab34590c2c7..187d52942ebb 100644 --- a/drivers/media/usb/dvb-usb/cxusb.c +++ b/drivers/media/usb/dvb-usb/cxusb.c @@ -673,6 +673,39 @@ static struct rc_map_table rc_map_d680_dmb_table[] = { { 0x0025, KEY_POWER }, }; +static int cxusb_tt_ct2_4400_read_mac_address(struct dvb_usb_device *d, u8 mac[6]) +{ + u8 wbuf[2]; + u8 rbuf[6]; + int ret; + struct i2c_msg msg[] = { + { + .addr = 0x51, + .flags = 0, + .buf = wbuf, + .len = 2, + }, { + .addr = 0x51, + .flags = I2C_M_RD, + .buf = rbuf, + .len = 6, + } + }; + + wbuf[0] = 0x1e; + wbuf[1] = 0x00; + ret = cxusb_i2c_xfer(&d->i2c_adap, msg, 2); + + if (ret == 2) { + memcpy(mac, rbuf, 6); + return 0; + } else { + if (ret < 0) + return ret; + return -EIO; + } +} + static int cxusb_tt_ct2_4650_ci_ctrl(void *priv, u8 read, int addr, u8 data, int *mem) { @@ -2316,6 +2349,8 @@ static struct dvb_usb_device_properties cxusb_tt_ct2_4400_properties = { .size_of_priv = sizeof(struct cxusb_state), .num_adapters = 1, + .read_mac_address = cxusb_tt_ct2_4400_read_mac_address, + .adapter = { { .num_frontends = 1, -- 2.20.1