path: root/include
diff options
authorSamu Onkalo <samu.p.onkalo@nokia.com>2010-10-22 07:57:31 -0400
committerGuenter Roeck <guenter.roeck@ericsson.com>2010-10-25 14:11:39 -0700
commitf10a5407b58603fb3b084d7fbdbd50f47d010c82 (patch)
tree121a730685dab830c412f7c09027b0b04917d307 /include
parent477bc918c2323a51f577cd892ca49376f6feb5d5 (diff)
hwmon: lis3: use block read to access data registers
Add optional blockread function to interface driver. If available the chip driver uses it for data register access. For 12 bit device it reads 6 bytes to get 3*16bit data. For 8 bit device it reads out 5 bytes since every second byte is dummy. This optimizes bus usage and reduces number of operations and interrupts needed for one data update. Signed-off-by: Samu Onkalo <samu.p.onkalo@nokia.com> Acked-by: Jonathan Cameron <jic23@cam.ac.uk> Acked-by: Eric Piel <eric.piel@tremplin-utc.net> Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Diffstat (limited to 'include')
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/lis3lv02d.h b/include/linux/lis3lv02d.h
index 18d578f08120..c949612ac841 100644
--- a/include/linux/lis3lv02d.h
+++ b/include/linux/lis3lv02d.h
@@ -68,6 +68,7 @@ struct lis3lv02d_platform_data {
s8 axis_y;
s8 axis_z;
+#define LIS3_USE_BLOCK_READ 0x02
u16 driver_features;
int default_rate;
int (*setup_resources)(void);

Privacy Policy