[GIT PULL FINAL 09/21] cxusb: Add read_mac_address for TT CT2-4400 and CT2-4650

Antti Palosaari
2014-08-22T10:58:29Z

From: Olli Salonen <olli.salonen@iki.fi>

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 <olli.salonen@iki.fi>
Reviewed-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Antti Palosaari <crope@iki.fi>
---
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 4ab3459..187d529 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,