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Staging: poch: Parameter to enable synthetic counter

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Adds a parameter that causes the hardware to synthesize Rx values
using a counter.

Signed-off-by: Vijay Kumar B. <vijaykumar@bravegnu.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Vijay Kumar B 2009-09-21 11:23:54 +05:30 committed by Greg Kroah-Hartman
parent e1bc58459a
commit 16fbf4cba0
1 changed files with 10 additions and 3 deletions
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13
drivers/staging/poch/poch.c
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@ -245,6 +245,11 @@ struct poch_dev {
struct device *dev;
};
static int synth_rx;
module_param(synth_rx, bool, 0600);
MODULE_PARM_DESC(synth_rx,
"Synthesize received values using a counter. Default: No");
static dev_t poch_first_dev;
static struct class *poch_cls;
static DEFINE_IDR(poch_ids);
@ -827,9 +832,11 @@ static int poch_open(struct inode *inode, struct file *filp)
fpga + FPGA_TX_CTL_REG);
} else {
/* Flush RX FIFO and output data to cardbus. */
iowrite32(FPGA_RX_CTL_CONT_CAP
| FPGA_RX_CTL_FIFO_FLUSH,
fpga + FPGA_RX_CTL_REG);
u32 ctl_val = FPGA_RX_CTL_CONT_CAP | FPGA_RX_CTL_FIFO_FLUSH;
if (synth_rx)
ctl_val |= FPGA_RX_CTL_SYNTH_DATA;
iowrite32(ctl_val, fpga + FPGA_RX_CTL_REG);
}
atomic_inc(&channel->inited);