[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>

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)) {