linux-kernel - [PATCH v6 6/6] hwmon: (fam15h_power) Add platform check function

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Message-ID: <1459928655-6071-7-git-send-email-ray.huang@amd.com>
Date:	Wed, 6 Apr 2016 15:44:15 +0800
From:	Huang Rui <ray.huang@....com>
To:	Guenter Roeck <linux@...ck-us.net>, Jean Delvare <jdelvare@...e.de>
CC:	<linux-hwmon@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	"Borislav Petkov" <bp@...en8.de>,
	Sherry Hurwitz <sherry.hurwitz@....com>,
	Huang Rui <ray.huang@....com>
Subject: [PATCH v6 6/6] hwmon: (fam15h_power) Add platform check function

This patch adds a platform check function to make code more readable.

Signed-off-by: Huang Rui <ray.huang@....com>
---
 drivers/hwmon/fam15h_power.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/drivers/hwmon/fam15h_power.c b/drivers/hwmon/fam15h_power.c
index 7d9d697..eb97a92 100644
--- a/drivers/hwmon/fam15h_power.c
+++ b/drivers/hwmon/fam15h_power.c
@@ -78,6 +78,11 @@ struct fam15h_power_data {
 	unsigned long power_period;
 };
 
+static bool is_carrizo_or_later(void)
+{
+	return boot_cpu_data.x86 == 0x15 && boot_cpu_data.x86_model >= 0x60;
+}
+
 static ssize_t show_power(struct device *dev,
 			  struct device_attribute *attr, char *buf)
 {
@@ -94,7 +99,7 @@ static ssize_t show_power(struct device *dev,
 	 * On Carrizo and later platforms, TdpRunAvgAccCap bit field
 	 * is extended to 4:31 from 4:25.
 	 */
-	if (boot_cpu_data.x86 == 0x15 && boot_cpu_data.x86_model >= 0x60) {
+	if (is_carrizo_or_later()) {
 		running_avg_capture = val >> 4;
 		running_avg_capture = sign_extend32(running_avg_capture, 27);
 	} else {
@@ -111,7 +116,7 @@ static ssize_t show_power(struct device *dev,
 	 * On Carrizo and later platforms, ApmTdpLimit bit field
 	 * is extended to 16:31 from 16:28.
 	 */
-	if (boot_cpu_data.x86 == 0x15 && boot_cpu_data.x86_model >= 0x60)
+	if (is_carrizo_or_later())
 		tdp_limit = val >> 16;
 	else
 		tdp_limit = (val >> 16) & 0x1fff;
-- 
1.9.1