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From: Divagar Mohandass <divagar.mohandass@intel.com>
To: robh+dt@kernel.org, mark.rutland@arm.com, wsa@the-dreams.de,
	sakari.ailus@iki.fi, tfiga@chromium.org
Cc: devicetree@vger.kernel.org, linux-i2c@vger.kernel.org,
	linux-kernel@vger.kernel.org, rajmohan.mani@intel.com,
	mika.westerberg@linux.intel.com, linux-pm@vger.kernel.org,
	Divagar Mohandass <divagar.mohandass@intel.com>
Subject: [PATCH v7 2/3] eeprom: at24: add support to fetch eeprom device property "size"
Date: Tue, 10 Oct 2017 11:30:36 +0530	[thread overview]
Message-ID: <1507615237-21744-3-git-send-email-divagar.mohandass@intel.com> (raw)
In-Reply-To: <1507615237-21744-1-git-send-email-divagar.mohandass@intel.com>

Obtain the size of the EEPROM chip from DT if the "size" property is
specified for the device.

Suggested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Divagar Mohandass <divagar.mohandass@intel.com>
---
 drivers/misc/eeprom/at24.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/misc/eeprom/at24.c b/drivers/misc/eeprom/at24.c
index 764ff5df..2199c42 100644
--- a/drivers/misc/eeprom/at24.c
+++ b/drivers/misc/eeprom/at24.c
@@ -570,6 +570,10 @@ static void at24_get_pdata(struct device *dev, struct at24_platform_data *chip)
 	if (device_property_present(dev, "read-only"))
 		chip->flags |= AT24_FLAG_READONLY;
 
+	err = device_property_read_u32(dev, "size", &val);
+	if (!err)
+		chip->byte_len = val;
+
 	err = device_property_read_u32(dev, "pagesize", &val);
 	if (!err) {
 		chip->page_size = val;
-- 
1.9.1

WARNING: multiple messages have this Message-ID (diff)
From: Divagar Mohandass <divagar.mohandass-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
To: robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org,
	mark.rutland-5wv7dgnIgG8@public.gmane.org,
	wsa-z923LK4zBo2bacvFa/9K2g@public.gmane.org,
	sakari.ailus-X3B1VOXEql0@public.gmane.org,
	tfiga-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org
Cc: devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	linux-i2c-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	rajmohan.mani-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org,
	mika.westerberg-VuQAYsv1563Yd54FQh9/CA@public.gmane.org,
	linux-pm-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	Divagar Mohandass
	<divagar.mohandass-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Subject: [PATCH v7 2/3] eeprom: at24: add support to fetch eeprom device property "size"
Date: Tue, 10 Oct 2017 11:30:36 +0530	[thread overview]
Message-ID: <1507615237-21744-3-git-send-email-divagar.mohandass@intel.com> (raw)
In-Reply-To: <1507615237-21744-1-git-send-email-divagar.mohandass-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>

Obtain the size of the EEPROM chip from DT if the "size" property is
specified for the device.

Suggested-by: Andy Shevchenko <andriy.shevchenko-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
Reviewed-by: Andy Shevchenko <andy.shevchenko-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Reviewed-by: Sakari Ailus <sakari.ailus-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
Signed-off-by: Divagar Mohandass <divagar.mohandass-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
---
 drivers/misc/eeprom/at24.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/misc/eeprom/at24.c b/drivers/misc/eeprom/at24.c
index 764ff5df..2199c42 100644
--- a/drivers/misc/eeprom/at24.c
+++ b/drivers/misc/eeprom/at24.c
@@ -570,6 +570,10 @@ static void at24_get_pdata(struct device *dev, struct at24_platform_data *chip)
 	if (device_property_present(dev, "read-only"))
 		chip->flags |= AT24_FLAG_READONLY;
 
+	err = device_property_read_u32(dev, "size", &val);
+	if (!err)
+		chip->byte_len = val;
+
 	err = device_property_read_u32(dev, "pagesize", &val);
 	if (!err) {
 		chip->page_size = val;
-- 
1.9.1

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  parent reply	other threads:[~2017-10-10  6:00 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-10-10  6:00 [PATCH v7 0/3] enable eeprom "size" property and runtime pm Divagar Mohandass
2017-10-10  6:00 ` Divagar Mohandass
2017-10-10  6:00 ` [PATCH v7 1/3] dt-bindings: add eeprom "size" property Divagar Mohandass
2017-10-17 21:35   ` Wolfram Sang
2017-10-10  6:00 ` Divagar Mohandass [this message]
2017-10-10  6:00   ` [PATCH v7 2/3] eeprom: at24: add support to fetch eeprom device property "size" Divagar Mohandass
2017-10-17 21:36   ` Wolfram Sang
2017-10-10  6:00 ` [PATCH v7 3/3] eeprom: at24: enable runtime pm support Divagar Mohandass
2017-10-17 21:36   ` Wolfram Sang

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