Re: [PATCH] hwmon:change sht15_reverse()
On 08/10/2015 07:41 AM, yalin wang wrote: This change sht15_reverse() to be generic bitrev8(). Signed-off-by: yalin wang Applied to hwmon-next. Thanks, Guenter -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
[PATCH] hwmon:change sht15_reverse()
This change sht15_reverse() to be generic bitrev8(). Signed-off-by: yalin wang --- drivers/hwmon/sht15.c | 20 1 file changed, 4 insertions(+), 16 deletions(-) diff --git a/drivers/hwmon/sht15.c b/drivers/hwmon/sht15.c index 497a7f8..a2fdbb7 100644 --- a/drivers/hwmon/sht15.c +++ b/drivers/hwmon/sht15.c @@ -33,6 +33,7 @@ #include #include #include +#include /* Commands */ #define SHT15_MEASURE_TEMP 0x03 @@ -173,19 +174,6 @@ struct sht15_data { }; /** - * sht15_reverse() - reverse a byte - * @byte:byte to reverse. - */ -static u8 sht15_reverse(u8 byte) -{ - u8 i, c; - - for (c = 0, i = 0; i < 8; i++) - c |= (!!(byte & (1 << i))) << (7 - i); - return c; -} - -/** * sht15_crc8() - compute crc8 * @data: sht15 specific data. * @value: sht15 retrieved data. @@ -196,7 +184,7 @@ static u8 sht15_crc8(struct sht15_data *data, const u8 *value, int len) { - u8 crc = sht15_reverse(data->val_status & 0x0F); + u8 crc = bitrev8(data->val_status & 0x0F); while (len--) { crc = sht15_crc8_table[*value ^ crc]; @@ -477,7 +465,7 @@ static int sht15_update_status(struct sht15_data *data) if (data->checksumming) { sht15_ack(data); - dev_checksum = sht15_reverse(sht15_read_byte(data)); + dev_checksum = bitrev8(sht15_read_byte(data)); checksum_vals[0] = SHT15_READ_STATUS; checksum_vals[1] = status; data->checksum_ok = (sht15_crc8(data, checksum_vals, 2) @@ -864,7 +852,7 @@ static void sht15_bh_read_data(struct work_struct *work_s) */ if (sht15_ack(data)) goto wakeup; - dev_checksum = sht15_reverse(sht15_read_byte(data)); + dev_checksum = bitrev8(sht15_read_byte(data)); checksum_vals[0] = (data->state == SHT15_READING_TEMP) ? SHT15_MEASURE_TEMP : SHT15_MEASURE_RH; checksum_vals[1] = (u8) (val >> 8); -- 1.9.1 yalin@ubuntu:~/linux-next$ -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
[PATCH] hwmon:change sht15_reverse()
This change sht15_reverse() to be generic bitrev8(). Signed-off-by: yalin wang yalin.wang2...@gmail.com --- drivers/hwmon/sht15.c | 20 1 file changed, 4 insertions(+), 16 deletions(-) diff --git a/drivers/hwmon/sht15.c b/drivers/hwmon/sht15.c index 497a7f8..a2fdbb7 100644 --- a/drivers/hwmon/sht15.c +++ b/drivers/hwmon/sht15.c @@ -33,6 +33,7 @@ #include linux/regulator/consumer.h #include linux/slab.h #include linux/atomic.h +#include linux/bitrev.h /* Commands */ #define SHT15_MEASURE_TEMP 0x03 @@ -173,19 +174,6 @@ struct sht15_data { }; /** - * sht15_reverse() - reverse a byte - * @byte:byte to reverse. - */ -static u8 sht15_reverse(u8 byte) -{ - u8 i, c; - - for (c = 0, i = 0; i 8; i++) - c |= (!!(byte (1 i))) (7 - i); - return c; -} - -/** * sht15_crc8() - compute crc8 * @data: sht15 specific data. * @value: sht15 retrieved data. @@ -196,7 +184,7 @@ static u8 sht15_crc8(struct sht15_data *data, const u8 *value, int len) { - u8 crc = sht15_reverse(data-val_status 0x0F); + u8 crc = bitrev8(data-val_status 0x0F); while (len--) { crc = sht15_crc8_table[*value ^ crc]; @@ -477,7 +465,7 @@ static int sht15_update_status(struct sht15_data *data) if (data-checksumming) { sht15_ack(data); - dev_checksum = sht15_reverse(sht15_read_byte(data)); + dev_checksum = bitrev8(sht15_read_byte(data)); checksum_vals[0] = SHT15_READ_STATUS; checksum_vals[1] = status; data-checksum_ok = (sht15_crc8(data, checksum_vals, 2) @@ -864,7 +852,7 @@ static void sht15_bh_read_data(struct work_struct *work_s) */ if (sht15_ack(data)) goto wakeup; - dev_checksum = sht15_reverse(sht15_read_byte(data)); + dev_checksum = bitrev8(sht15_read_byte(data)); checksum_vals[0] = (data-state == SHT15_READING_TEMP) ? SHT15_MEASURE_TEMP : SHT15_MEASURE_RH; checksum_vals[1] = (u8) (val 8); -- 1.9.1 yalin@ubuntu:~/linux-next$ -- To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: [PATCH] hwmon:change sht15_reverse()
On 08/10/2015 07:41 AM, yalin wang wrote: This change sht15_reverse() to be generic bitrev8(). Signed-off-by: yalin wang yalin.wang2...@gmail.com Applied to hwmon-next. Thanks, Guenter -- To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/