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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next prev parent reply other threads:[~2017-10-10 6:00 UTC|newest]
Thread overview: 7+ 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 ` [PATCH v7 1/3] dt-bindings: add eeprom "size" property Divagar Mohandass
2017-10-17 21:35 ` Wolfram Sang
[not found] ` <1507615237-21744-1-git-send-email-divagar.mohandass-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2017-10-10 6:00 ` Divagar Mohandass [this message]
2017-10-17 21:36 ` [PATCH v7 2/3] eeprom: at24: add support to fetch eeprom device property "size" 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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