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authorSean Young <sean@mess.org>2012-10-25 00:22:41 +0400
committerMauro Carvalho Chehab <mchehab@redhat.com>2012-11-21 23:05:18 +0400
commitc496e716e0a7e3c486b99edbab5a6db7649824b1 (patch)
treeefa290979247880c6298013cff2d8ce30863de2e /drivers/media/rc/winbond-cir.c
parente5eda7faea23c28836f17487962c6539fd3b3e27 (diff)
downloadlinux-c496e716e0a7e3c486b99edbab5a6db7649824b1.tar.xz
[media] winbond-cir: increase IR receiver resolution
This is needed for carrier reporting. Signed-off-by: Sean Young <sean@mess.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/rc/winbond-cir.c')
-rw-r--r--drivers/media/rc/winbond-cir.c14
1 files changed, 9 insertions, 5 deletions
diff --git a/drivers/media/rc/winbond-cir.c b/drivers/media/rc/winbond-cir.c
index 16ba38e8183f..f040bbfd2100 100644
--- a/drivers/media/rc/winbond-cir.c
+++ b/drivers/media/rc/winbond-cir.c
@@ -358,7 +358,7 @@ wbcir_irq_rx(struct wbcir_data *data, struct pnp_dev *device)
if (data->rxstate == WBCIR_RXSTATE_ERROR)
continue;
rawir.pulse = irdata & 0x80 ? false : true;
- rawir.duration = US_TO_NS(((irdata & 0x7F) + 1) * 10);
+ rawir.duration = US_TO_NS(((irdata & 0x7F) + 1) * 2);
ir_raw_event_store_with_filter(data->dev, &rawir);
}
@@ -862,8 +862,8 @@ wbcir_init_hw(struct wbcir_data *data)
/* prescaler 1.0, tx/rx fifo lvl 16 */
outb(0x30, data->sbase + WBCIR_REG_SP3_EXCR2);
- /* Set baud divisor to sample every 10 us */
- outb(0x0F, data->sbase + WBCIR_REG_SP3_BGDL);
+ /* Set baud divisor to sample every 2 ns */
+ outb(0x03, data->sbase + WBCIR_REG_SP3_BGDL);
outb(0x00, data->sbase + WBCIR_REG_SP3_BGDH);
/* Set CEIR mode */
@@ -872,9 +872,12 @@ wbcir_init_hw(struct wbcir_data *data)
inb(data->sbase + WBCIR_REG_SP3_LSR); /* Clear LSR */
inb(data->sbase + WBCIR_REG_SP3_MSR); /* Clear MSR */
- /* Disable RX demod, enable run-length enc/dec, set freq span */
+ /*
+ * Disable RX demod, enable run-length enc/dec, set freq span and
+ * enable over-sampling
+ */
wbcir_select_bank(data, WBCIR_BANK_7);
- outb(0x90, data->sbase + WBCIR_REG_SP3_RCCFG);
+ outb(0xd0, data->sbase + WBCIR_REG_SP3_RCCFG);
/* Disable timer */
wbcir_select_bank(data, WBCIR_BANK_4);
@@ -1017,6 +1020,7 @@ wbcir_probe(struct pnp_dev *device, const struct pnp_device_id *dev_id)
data->dev->priv = data;
data->dev->dev.parent = &device->dev;
data->dev->timeout = MS_TO_NS(100);
+ data->dev->rx_resolution = US_TO_NS(2);
data->dev->allowed_protos = RC_BIT_ALL;
if (!request_region(data->wbase, WAKEUP_IOMEM_LEN, DRVNAME)) {