From: Fabrice Gasnier <fabrice.gasnier@st.com>
To: <jic23@kernel.org>, <linux@armlinux.org.uk>, <robh+dt@kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>
Cc: <linux-iio@vger.kernel.org>, <mark.rutland@arm.com>,
<mcoquelin.stm32@gmail.com>, <alexandre.torgue@st.com>,
<lars@metafoo.de>, <knaack.h@gmx.de>, <pmeerw@pmeerw.net>,
<fabrice.gasnier@st.com>, <benjamin.gaignard@linaro.org>,
<benjamin.gaignard@st.com>
Subject: [PATCH v2 2/5] iio: adc: stm32: add dt option to set default trigger polarity
Date: Mon, 30 Jan 2017 15:33:57 +0100 [thread overview]
Message-ID: <1485786840-4557-3-git-send-email-fabrice.gasnier@st.com> (raw)
In-Reply-To: <1485786840-4557-1-git-send-email-fabrice.gasnier@st.com>
STM32 ADC trigger polarity can be set to either rising, falling
or both edges. Add dt option to configure it.
Note: default value may be overridden later via trigger_polarity
sysfs attribute.
Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
---
drivers/iio/adc/stm32-adc.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/drivers/iio/adc/stm32-adc.c b/drivers/iio/adc/stm32-adc.c
index 9b49a6ad..be0e457 100644
--- a/drivers/iio/adc/stm32-adc.c
+++ b/drivers/iio/adc/stm32-adc.c
@@ -997,6 +997,13 @@ static int stm32_adc_probe(struct platform_device *pdev)
return -EINVAL;
}
+ of_property_read_u32(pdev->dev.of_node, "st,trigger-polarity",
+ &adc->trigger_polarity);
+ if (adc->trigger_polarity >= ARRAY_SIZE(stm32_trig_pol_items)) {
+ dev_err(&pdev->dev, "Invalid st,trigger-polarity property\n");
+ return -EINVAL;
+ }
+
adc->irq = platform_get_irq(pdev, 0);
if (adc->irq < 0) {
dev_err(&pdev->dev, "failed to get irq\n");
--
1.9.1
next prev parent reply other threads:[~2017-01-30 14:35 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-30 14:33 [PATCH v2 0/5] Add EXTI GPIO trigger support to STM32 ADC Fabrice Gasnier
2017-01-30 14:33 ` [PATCH v2 1/5] Documentation: dt: iio: document stm32 adc trigger polarity Fabrice Gasnier
2017-02-05 9:56 ` Jonathan Cameron
2017-01-30 14:33 ` Fabrice Gasnier [this message]
2017-01-30 14:33 ` [PATCH v2 3/5] Documentation: dt: iio: document stm32 exti trigger Fabrice Gasnier
2017-01-30 14:33 ` [PATCH v2 4/5] iio: trigger: add support for STM32 EXTI triggers Fabrice Gasnier
2017-02-03 19:40 ` Linus Walleij
2017-02-04 11:39 ` Jonathan Cameron
2017-02-04 20:03 ` Linus Walleij
2017-02-05 10:00 ` Jonathan Cameron
2017-02-06 16:01 ` Fabrice Gasnier
2017-02-11 10:29 ` Jonathan Cameron
2017-02-17 16:05 ` Fabrice Gasnier
2017-02-19 12:49 ` Jonathan Cameron
2017-01-30 14:34 ` [PATCH v2 5/5] iio: adc: stm32: add exti gpio trigger source Fabrice Gasnier
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=1485786840-4557-3-git-send-email-fabrice.gasnier@st.com \
--to=fabrice.gasnier@st.com \
--cc=alexandre.torgue@st.com \
--cc=benjamin.gaignard@linaro.org \
--cc=benjamin.gaignard@st.com \
--cc=devicetree@vger.kernel.org \
--cc=jic23@kernel.org \
--cc=knaack.h@gmx.de \
--cc=lars@metafoo.de \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-iio@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux@armlinux.org.uk \
--cc=mark.rutland@arm.com \
--cc=mcoquelin.stm32@gmail.com \
--cc=pmeerw@pmeerw.net \
--cc=robh+dt@kernel.org \
/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: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).