From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stefan Wahren Subject: [PATCH V10 1/6] of: base: Implement read function for s32 array Date: Fri, 3 Mar 2017 23:18:44 +0000 Message-ID: <1488583129-4159-2-git-send-email-stefan.wahren@i2se.com> References: <1488583129-4159-1-git-send-email-stefan.wahren@i2se.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1488583129-4159-1-git-send-email-stefan.wahren@i2se.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=m.gmane.org@lists.infradead.org To: Eric Anholt , Zhang Rui , Eduardo Valentin Cc: Stefan Wahren , devicetree@vger.kernel.org, Florian Fainelli , linux-pm@vger.kernel.org, Catalin Marinas , Will Deacon , Rob Herring , linux-rpi-kernel@lists.infradead.org, Martin Sperl , Frank Rowand , linux-arm-kernel@lists.infradead.org List-Id: devicetree@vger.kernel.org In order to read signed thermal coefficients from DT we need a proper function. Signed-off-by: Stefan Wahren --- include/linux/of.h | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) diff --git a/include/linux/of.h b/include/linux/of.h index 21e6323..98a046a 100644 --- a/include/linux/of.h +++ b/include/linux/of.h @@ -474,6 +474,34 @@ static inline int of_property_read_u32_array(const struct device_node *np, } /** + * of_property_read_s32_array - Find and read an array of 32 bit signed integers + * from a property. + * + * @np: device node from which the property value is to be read. + * @propname: name of the property to be searched. + * @out_values: pointer to return value, modified only if return value is 0. + * @sz: number of array elements to read + * + * Search for a property in a device node and read 32-bit value(s) from + * it. Returns 0 on success, -EINVAL if the property does not exist, + * -ENODATA if property does not have a value, and -EOVERFLOW if the + * property data isn't large enough. + * + * The out_values is modified only if a valid s32 value can be decoded. + */ +static inline int of_property_read_s32_array(const struct device_node *np, + const char *propname, + s32 *out_values, size_t sz) +{ + int ret = of_property_read_variable_u32_array(np, propname, out_values, + sz, 0); + if (ret >= 0) + return 0; + else + return ret; +} + +/** * of_property_read_u64_array - Find and read an array of 64 bit integers * from a property. * @@ -676,6 +704,13 @@ static inline int of_property_read_u32_array(const struct device_node *np, return -ENOSYS; } +static inline int of_property_read_s32_array(const struct device_node *np, + const char *propname, + s32 *out_values, size_t sz) +{ + return -ENOSYS; +} + static inline int of_property_read_u64_array(const struct device_node *np, const char *propname, u64 *out_values, size_t sz) -- 1.7.9.5