From ff5c31d41db38338ec44dcd88e2a9a1bfe95a0fb Mon Sep 17 00:00:00 2001
From: Vijay Kumar <vijaykumar@bravegnu.org>
Date: Mon, 21 Sep 2009 11:23:57 +0530
Subject: [PATCH] --- yaml --- r: 175162 b: refs/heads/master c:
 dad1740133ffe49ae44044f97e4cbfcb42f037b1 h: refs/heads/master v: v3

---
 [refs]                            |  2 +-
 trunk/drivers/staging/poch/poch.c | 16 +++++++++++++---
 2 files changed, 14 insertions(+), 4 deletions(-)

diff --git a/[refs] b/[refs]
index 32ce7f83a7c7..df60c7736637 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 7e72a85e07cab448a5779cf1ee851b850930ec9f
+refs/heads/master: dad1740133ffe49ae44044f97e4cbfcb42f037b1
diff --git a/trunk/drivers/staging/poch/poch.c b/trunk/drivers/staging/poch/poch.c
index 1637c281ea3c..babd881809a9 100644
--- a/trunk/drivers/staging/poch/poch.c
+++ b/trunk/drivers/staging/poch/poch.c
@@ -252,6 +252,11 @@ module_param(synth_rx, bool, 0600);
 MODULE_PARM_DESC(synth_rx,
 		"Synthesize received values using a counter. Default: No");
 
+static int loopback;
+module_param(loopback, bool, 0600);
+MODULE_PARM_DESC(loopback,
+		"Enable hardware loopback of trasnmitted data. Default: No");
+
 static dev_t poch_first_dev;
 static struct class *poch_cls;
 static DEFINE_IDR(poch_ids);
@@ -830,9 +835,14 @@ static int poch_open(struct inode *inode, struct file *filp)
 
 	if (channel->dir == CHANNEL_DIR_TX) {
 		/* Flush TX FIFO and output data from cardbus. */
-		iowrite32(FPGA_TX_CTL_FIFO_FLUSH
-			  | FPGA_TX_CTL_OUTPUT_CARDBUS,
-			  fpga + FPGA_TX_CTL_REG);
+		u32 ctl_val = 0;
+
+		ctl_val |= FPGA_TX_CTL_FIFO_FLUSH;
+		ctl_val |= FPGA_TX_CTL_OUTPUT_CARDBUS;
+		if (loopback)
+			ctl_val |= FPGA_TX_CTL_LOOPBACK;
+
+		iowrite32(ctl_val, fpga + FPGA_TX_CTL_REG);
 	} else {
 		/* Flush RX FIFO and output data to cardbus. */
 		u32 ctl_val = FPGA_RX_CTL_CONT_CAP | FPGA_RX_CTL_FIFO_FLUSH;