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path: root/drivers/hwmon/ads7871.c
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Diffstat (limited to 'drivers/hwmon/ads7871.c')
-rw-r--r--drivers/hwmon/ads7871.c39
1 files changed, 18 insertions, 21 deletions
diff --git a/drivers/hwmon/ads7871.c b/drivers/hwmon/ads7871.c
index 04450f8bf5da..e65c6e45d36b 100644
--- a/drivers/hwmon/ads7871.c
+++ b/drivers/hwmon/ads7871.c
@@ -34,9 +34,11 @@
#define REG_SER_CONTROL 24 /*Serial Interface Control Register*/
#define REG_ID 31 /*ID Register*/
-/*From figure 17 in the datasheet
-* These bits get ORed with the address to form
-* the instruction byte */
+/*
+ * From figure 17 in the datasheet
+ * These bits get ORed with the address to form
+ * the instruction byte
+ */
/*Instruction Bit masks*/
#define INST_MODE_bm (1<<7)
#define INST_READ_bm (1<<6)
@@ -105,8 +107,10 @@ static ssize_t show_voltage(struct device *dev,
uint8_t channel, mux_cnv;
channel = attr->index;
- /*TODO: add support for conversions
- *other than single ended with a gain of 1*/
+ /*
+ * TODO: add support for conversions
+ * other than single ended with a gain of 1
+ */
/*MUX_M3_bm forces single ended*/
/*This is also where the gain of the PGA would be set*/
ads7871_write_reg8(spi, REG_GAIN_MUX,
@@ -114,8 +118,10 @@ static ssize_t show_voltage(struct device *dev,
ret = ads7871_read_reg8(spi, REG_GAIN_MUX);
mux_cnv = ((ret & MUX_CNV_bm)>>MUX_CNV_bv);
- /*on 400MHz arm9 platform the conversion
- *is already done when we do this test*/
+ /*
+ * on 400MHz arm9 platform the conversion
+ * is already done when we do this test
+ */
while ((i < 2) && mux_cnv) {
i++;
ret = ads7871_read_reg8(spi, REG_GAIN_MUX);
@@ -179,8 +185,10 @@ static int __devinit ads7871_probe(struct spi_device *spi)
ret = ads7871_read_reg8(spi, REG_OSC_CONTROL);
dev_dbg(&spi->dev, "REG_OSC_CONTROL write:%x, read:%x\n", val, ret);
- /*because there is no other error checking on an SPI bus
- we need to make sure we really have a chip*/
+ /*
+ * because there is no other error checking on an SPI bus
+ * we need to make sure we really have a chip
+ */
if (val != ret) {
err = -ENODEV;
goto exit;
@@ -234,18 +242,7 @@ static struct spi_driver ads7871_driver = {
.remove = __devexit_p(ads7871_remove),
};
-static int __init ads7871_init(void)
-{
- return spi_register_driver(&ads7871_driver);
-}
-
-static void __exit ads7871_exit(void)
-{
- spi_unregister_driver(&ads7871_driver);
-}
-
-module_init(ads7871_init);
-module_exit(ads7871_exit);
+module_spi_driver(ads7871_driver);
MODULE_AUTHOR("Paul Thomas <pthomas8589@gmail.com>");
MODULE_DESCRIPTION("TI ADS7871 A/D driver");