Rather than dumping out hex values, lets print the actual calculated frequency and period the hardware has been configured for. After this change: [ 2643.276215] mceusb 3-1:1.0: tx data: 9f 07 (length=2) [ 2643.276218] mceusb 3-1:1.0: Get carrier mode and freq [ 2643.277206] mceusb 3-1:1.0: rx data: 9f 06 01 42 (length=4) [ 2643.277209] mceusb 3-1:1.0: Got carrier of 37037 Hz (period 27us) Matches up perfectly with the table in Microsoft's docs. Of course, I've noticed on one of my devices that the MS-recommended default value of 1 for carrier pre-scaler and 66 for carrier period was butchered, and instead of converting 66 to hex (0x42 like above), they put in 0x66, so the hardware reports a default carrier of 24390Hz. Fortunately, I guess, this particular device is rx-only, but I wouldn't put it past other hw to screw up here too. Signed-off-by: Jarod Wilson <jarod@xxxxxxxxxx> --- drivers/media/rc/mceusb.c | 16 +++++++++++----- 1 files changed, 11 insertions(+), 5 deletions(-) diff --git a/drivers/media/rc/mceusb.c b/drivers/media/rc/mceusb.c index 160409e..b0c8bd2 100644 --- a/drivers/media/rc/mceusb.c +++ b/drivers/media/rc/mceusb.c @@ -516,6 +516,7 @@ static void mceusb_dev_printdata(struct mceusb_dev *ir, char *buf, u8 cmd, subcmd, data1, data2, data3, data4, data5; struct device *dev = ir->dev; int i, start, skip = 0; + u32 carrier, period; if (!debug) return; @@ -613,9 +614,14 @@ static void mceusb_dev_printdata(struct mceusb_dev *ir, char *buf, dev_info(dev, "Resp to 9f 05 of 0x%02x 0x%02x\n", data1, data2); break; - case MCE_CMD_SETIRCFS: - dev_info(dev, "%s carrier mode and freq of " - "0x%02x 0x%02x\n", inout, data1, data2); + case MCE_RSP_EQIRCFS: + period = DIV_ROUND_CLOSEST( + (1 << data1 * 2) * (data2 + 1), 10); + if (!period) + break; + carrier = (1000 * 1000) / period; + dev_info(dev, "%s carrier of %u Hz (period %uus)\n", + inout, carrier, period); break; case MCE_CMD_GETIRCFS: dev_info(dev, "Get carrier mode and freq\n"); @@ -626,9 +632,9 @@ static void mceusb_dev_printdata(struct mceusb_dev *ir, char *buf, break; case MCE_RSP_EQIRTIMEOUT: /* value is in units of 50us, so x*50/1000 ms */ + period = ((data1 << 8) | data2) * MCE_TIME_UNIT / 1000; dev_info(dev, "%s receive timeout of %d ms\n", - inout, - ((data1 << 8) | data2) * MCE_TIME_UNIT / 1000); + inout, period); break; case MCE_CMD_GETIRTIMEOUT: dev_info(dev, "Get receive timeout\n"); -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
