From: Daniel Baluta <daniel.baluta@intel.com>
To: jic23@kernel.org
Cc: daniel.baluta@intel.com, pmeerw@pmeerw.net, knaack.h@gmx.de,
lars@metafoo.de, linux-kernel@vger.kernel.org,
linux-iio@vger.kernel.org
Subject: [PATCH 4/6] iio: magnetometer: mmc35240: Use a smaller sleep value
Date: Wed, 3 Jun 2015 11:33:56 +0300 [thread overview]
Message-ID: <1433320438-23870-5-git-send-email-daniel.baluta@intel.com> (raw)
In-Reply-To: <1433320438-23870-1-git-send-email-daniel.baluta@intel.com>
According to datasheet, Page 8, minimum wait time to complete
measurement is 10ms. Adjusting this value will increase the
userspace polling rate.
Fixes: abeb6b1e7b ("iio: magnetometer: Add support for MEMSIC MMC35240")
Signed-off-by: Daniel Baluta <daniel.baluta@intel.com>
---
drivers/iio/magnetometer/mmc35240.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/iio/magnetometer/mmc35240.c b/drivers/iio/magnetometer/mmc35240.c
index c520117..35eb6fd 100644
--- a/drivers/iio/magnetometer/mmc35240.c
+++ b/drivers/iio/magnetometer/mmc35240.c
@@ -219,7 +219,8 @@ static int mmc35240_take_measurement(struct mmc35240_data *data)
return ret;
if (reg_status & MMC35240_STATUS_MEAS_DONE_BIT)
break;
- msleep(20);
+ /* minimum wait time to complete measurement is 10 ms */
+ usleep_range(10000, 11000);
}
if (tries < 0) {
--
1.9.1
next prev parent reply other threads:[~2015-06-03 8:32 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-06-03 8:33 [PATCH 0/6] Memsic MMC35230 magnetometer fixes Daniel Baluta
2015-06-03 8:33 ` [PATCH 1/6] iio: magnetometer: mmc35240: i2c device name should be lower case Daniel Baluta
2015-06-03 8:33 ` [PATCH 2/6] iio: magnetometer: mmc35240: NULL terminate attribute array Daniel Baluta
2015-06-03 8:33 ` [PATCH 3/6] iio: magnetometer: mmc35240: Fix broken processed value Daniel Baluta
2015-06-03 8:44 ` Peter Meerwald
2015-06-03 8:33 ` Daniel Baluta [this message]
2015-06-03 8:33 ` [PATCH 5/6] iio: magnetometer: mmc35240: Fix sensitivity on z-axis Daniel Baluta
2015-06-03 8:33 ` [PATCH 6/6] iio: magnetometer: mmc35240: Add compensation for raw values Daniel Baluta
2015-06-03 8:42 ` Peter Meerwald
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