From: Himanshu Jha <himanshujha199640@gmail.com> To: jic23@kernel.org Cc: devel@driverdev.osuosl.org, daniel.baluta@gmail.com, lars@metafoo.de, Michael.Hennerich@analog.com, linux-iio@vger.kernel.org, gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, Himanshu Jha <himanshujha199640@gmail.com>, pmeerw@pmeerw.net, knaack.h@gmx.de Subject: [PATCH 10/11] Staging: iio: accel: Add comments about units in data read function Date: Mon, 5 Mar 2018 13:19:29 +0530 [thread overview] Message-ID: <1520236170-14668-11-git-send-email-himanshujha199640@gmail.com> (raw) In-Reply-To: <1520236170-14668-1-git-send-email-himanshujha199640@gmail.com> Clarify the conversion and formation of resultant data in the adis16201_read_raw() with sufficient comments. Signed-off-by: Himanshu Jha <himanshujha199640@gmail.com> --- drivers/staging/iio/accel/adis16201.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/staging/iio/accel/adis16201.c b/drivers/staging/iio/accel/adis16201.c index 8d795e2..946c7b1 100644 --- a/drivers/staging/iio/accel/adis16201.c +++ b/drivers/staging/iio/accel/adis16201.c @@ -130,6 +130,11 @@ static int adis16201_read_raw(struct iio_dev *indio_dev, *val2 = 0; return IIO_VAL_INT_PLUS_MICRO; case IIO_ACCEL: + /* + * IIO base unit for sensitivity of accelerometer + * is milli g. + * 1 LSB represents 0.244 mg. + */ *val = 0; *val2 = IIO_G_TO_M_S_2(462400); return IIO_VAL_INT_PLUS_NANO; @@ -142,6 +147,11 @@ static int adis16201_read_raw(struct iio_dev *indio_dev, } break; case IIO_CHAN_INFO_OFFSET: + /* + * The raw ADC value is 0x4FE when the temperature + * is 25 degrees and the scale factor per milli + * degree celcius is -470. + */ *val = 25000 / -470 - 1278; return IIO_VAL_INT; case IIO_CHAN_INFO_CALIBBIAS: -- 2.7.4 _______________________________________________ devel mailing list devel@linuxdriverproject.org http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
WARNING: multiple messages have this Message-ID (diff)
From: Himanshu Jha <himanshujha199640@gmail.com> To: jic23@kernel.org Cc: lars@metafoo.de, Michael.Hennerich@analog.com, knaack.h@gmx.de, pmeerw@pmeerw.net, gregkh@linuxfoundation.org, linux-iio@vger.kernel.org, devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org, daniel.baluta@gmail.com, Himanshu Jha <himanshujha199640@gmail.com> Subject: [PATCH 10/11] Staging: iio: accel: Add comments about units in data read function Date: Mon, 5 Mar 2018 13:19:29 +0530 [thread overview] Message-ID: <1520236170-14668-11-git-send-email-himanshujha199640@gmail.com> (raw) In-Reply-To: <1520236170-14668-1-git-send-email-himanshujha199640@gmail.com> Clarify the conversion and formation of resultant data in the adis16201_read_raw() with sufficient comments. Signed-off-by: Himanshu Jha <himanshujha199640@gmail.com> --- drivers/staging/iio/accel/adis16201.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/staging/iio/accel/adis16201.c b/drivers/staging/iio/accel/adis16201.c index 8d795e2..946c7b1 100644 --- a/drivers/staging/iio/accel/adis16201.c +++ b/drivers/staging/iio/accel/adis16201.c @@ -130,6 +130,11 @@ static int adis16201_read_raw(struct iio_dev *indio_dev, *val2 = 0; return IIO_VAL_INT_PLUS_MICRO; case IIO_ACCEL: + /* + * IIO base unit for sensitivity of accelerometer + * is milli g. + * 1 LSB represents 0.244 mg. + */ *val = 0; *val2 = IIO_G_TO_M_S_2(462400); return IIO_VAL_INT_PLUS_NANO; @@ -142,6 +147,11 @@ static int adis16201_read_raw(struct iio_dev *indio_dev, } break; case IIO_CHAN_INFO_OFFSET: + /* + * The raw ADC value is 0x4FE when the temperature + * is 25 degrees and the scale factor per milli + * degree celcius is -470. + */ *val = 25000 / -470 - 1278; return IIO_VAL_INT; case IIO_CHAN_INFO_CALIBBIAS: -- 2.7.4
next prev parent reply other threads:[~2018-03-05 7:49 UTC|newest] Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top 2018-03-05 7:49 [PATCH 00/11] staging: iio: accel: adis16201 driver cleanup Himanshu Jha 2018-03-05 7:49 ` Himanshu Jha 2018-03-05 7:49 ` [PATCH 01/11] Staging: iio: accel: Prefer alphabetical sequence of header files Himanshu Jha 2018-03-07 20:29 ` Jonathan Cameron 2018-03-05 7:49 ` [PATCH 02/11] Staging: iio: accel: Add a blank space before returns Himanshu Jha 2018-03-07 20:32 ` Jonathan Cameron 2018-03-07 20:32 ` Jonathan Cameron 2018-03-05 7:49 ` [PATCH 03/11] Staging: iio: accel: Remove unnecessary comments Himanshu Jha 2018-03-05 7:49 ` Himanshu Jha 2018-03-06 21:26 ` Shreeya Patel 2018-03-06 22:25 ` Himanshu Jha 2018-03-07 20:40 ` Jonathan Cameron 2018-03-07 20:40 ` Jonathan Cameron 2018-03-05 7:49 ` [PATCH 04/11] Staging: iio: accel: Rename few macro definitions Himanshu Jha 2018-03-05 7:49 ` Himanshu Jha 2018-03-07 20:42 ` Jonathan Cameron 2018-03-07 20:42 ` Jonathan Cameron 2018-03-05 7:49 ` [PATCH 05/11] Staging: iio: accel: Add _REG suffix to registers Himanshu Jha 2018-03-05 7:49 ` Himanshu Jha 2018-03-07 20:44 ` Jonathan Cameron 2018-03-05 7:49 ` [PATCH 06/11] Staging: iio: accel: Reverse christmas tree Himanshu Jha 2018-03-05 7:49 ` Himanshu Jha 2018-03-05 7:49 ` [PATCH 07/11] Staging: iio: accel: Adjust arguments to match open parentheses Himanshu Jha 2018-03-05 7:49 ` Himanshu Jha 2018-03-05 10:16 ` Dan Carpenter 2018-03-05 10:16 ` Dan Carpenter 2018-03-05 7:49 ` [PATCH 08/11] Staging: iio: accel: Use switch statement than if-else Himanshu Jha 2018-03-05 7:49 ` Himanshu Jha 2018-03-07 20:48 ` Jonathan Cameron 2018-03-07 20:48 ` Jonathan Cameron 2018-03-05 7:49 ` [PATCH 09/11] Staging: iio: accel: Use sign_extend32 function Himanshu Jha 2018-03-05 7:49 ` Himanshu Jha 2018-03-05 7:49 ` Himanshu Jha [this message] 2018-03-05 7:49 ` [PATCH 10/11] Staging: iio: accel: Add comments about units in data read function Himanshu Jha 2018-03-07 20:50 ` Jonathan Cameron 2018-03-07 20:50 ` Jonathan Cameron 2018-03-08 7:28 ` Himanshu Jha 2018-03-10 15:05 ` Jonathan Cameron 2018-03-10 15:05 ` Jonathan Cameron 2018-03-05 7:49 ` [PATCH 11/11] Staging: iio: accel: Move adis16201 driver out of staging subsystem Himanshu Jha 2018-03-05 7:49 ` Himanshu Jha 2018-03-07 20:58 ` Jonathan Cameron 2018-03-07 20:58 ` Jonathan Cameron
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=1520236170-14668-11-git-send-email-himanshujha199640@gmail.com \ --to=himanshujha199640@gmail.com \ --cc=Michael.Hennerich@analog.com \ --cc=daniel.baluta@gmail.com \ --cc=devel@driverdev.osuosl.org \ --cc=gregkh@linuxfoundation.org \ --cc=jic23@kernel.org \ --cc=knaack.h@gmx.de \ --cc=lars@metafoo.de \ --cc=linux-iio@vger.kernel.org \ --cc=linux-kernel@vger.kernel.org \ --cc=pmeerw@pmeerw.net \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: linkBe sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes, see mirroring instructions on how to clone and mirror all data and code used by this external index.