From: Jean Delvare <khali@linux-fr.org>
Date: Thu, 28 Oct 2010 18:31:47 +0000 (+0200)
Subject: hwmon: (w83795) Get rid of VRLSB_SHIFT
X-Git-Tag: v3.0~2964^2~26
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=a654b9d4e7152b06557e2f22bcf0a245bc88bc98;p=platform%2Fkernel%2Flinux-amlogic.git

hwmon: (w83795) Get rid of VRLSB_SHIFT

VRLSB_SHIFT is a non-sense, the actual shift depends on the sensor
type (fans need 4, other sensors need 6). Get rid of it to prevent
any confusion. Also get rid of the useless masking, the meaningful
bits are always the MSb so there's nothing to mask out after
shifting.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
---

diff --git a/drivers/hwmon/w83795.c b/drivers/hwmon/w83795.c
index aea3275..71b7a25 100644
--- a/drivers/hwmon/w83795.c
+++ b/drivers/hwmon/w83795.c
@@ -127,7 +127,6 @@ static const u16 W83795_REG_IN[][3] = {
 	{0x24, 0xa2, 0xa3},	/* VSEN17 */
 };
 #define W83795_REG_VRLSB		0x3C
-#define VRLSB_SHIFT			6
 
 static const u8 W83795_REG_IN_HL_LSB[] = {
 	0x8e,	/* VSEN1-4 */
@@ -485,8 +484,7 @@ static struct w83795_data *w83795_update_device(struct device *dev)
 		if (!(data->has_in & (1 << i)))
 			continue;
 		tmp = w83795_read(client, W83795_REG_IN[i][IN_READ]) << 2;
-		tmp |= (w83795_read(client, W83795_REG_VRLSB)
-			>> VRLSB_SHIFT) & 0x03;
+		tmp |= w83795_read(client, W83795_REG_VRLSB) >> 6;
 		data->in[i][IN_READ] = tmp;
 	}
 
@@ -1140,8 +1138,7 @@ show_temp(struct device *dev, struct device_attribute *attr, char *buf)
 	long temp = temp_from_reg(data->temp[index][nr]);
 
 	if (TEMP_READ == nr)
-		temp += ((data->temp_read_vrlsb[index] >> VRLSB_SHIFT) & 0x03)
-			* 250;
+		temp += (data->temp_read_vrlsb[index] >> 6) * 250;
 	return sprintf(buf, "%ld\n", temp);
 }
 
@@ -1202,7 +1199,7 @@ show_dts(struct device *dev, struct device_attribute *attr, char *buf)
 	struct w83795_data *data = w83795_update_device(dev);
 	long temp = temp_from_reg(data->dts[index]);
 
-	temp += ((data->dts_read_vrlsb[index] >> VRLSB_SHIFT) & 0x03) * 250;
+	temp += (data->dts_read_vrlsb[index] >> 6) * 250;
 	return sprintf(buf, "%ld\n", temp);
 }
 
@@ -1981,8 +1978,7 @@ static int w83795_probe(struct i2c_client *client,
 		data->in[i][IN_LOW] =
 			w83795_read(client, W83795_REG_IN[i][IN_LOW]);
 		tmp = w83795_read(client, W83795_REG_IN[i][IN_READ]) << 2;
-		tmp |= (w83795_read(client, W83795_REG_VRLSB)
-			>> VRLSB_SHIFT) & 0x03;
+		tmp |= w83795_read(client, W83795_REG_VRLSB) >> 6;
 		data->in[i][IN_READ] = tmp;
 	}
 	for (i = 0; i < IN_LSB_REG_NUM; i++) {
@@ -2010,8 +2006,7 @@ static int w83795_probe(struct i2c_client *client,
 		data->fan_min[i] |=
 			(tmp >> W83795_REG_FAN_MIN_LSB_SHIFT(i)) & 0x0F;
 		data->fan[i] = w83795_read(client, W83795_REG_FAN(i)) << 4;
-		data->fan[i] |=
-		  (w83795_read(client, W83795_REG_VRLSB) >> 4) & 0x0F;
+		data->fan[i] |= w83795_read(client, W83795_REG_VRLSB) >> 4;
 	}
 
 	/* temperature and limits */