From: Michael Hennerich <michael.hennerich@xxxxxxxxxx>
Avoid additional addressing overhead incurred by word_data transfers.
Signed-off-by: Michael Hennerich <michael.hennerich@xxxxxxxxxx>
Signed-off-by: Mike Frysinger <vapier@xxxxxxxxxx>
---
drivers/input/touchscreen/ad7879-i2c.c | 6 +++++-
1 files changed, 5 insertions(+), 1 deletions(-)
diff --git a/drivers/input/touchscreen/ad7879-i2c.c b/drivers/input/touchscreen/ad7879-i2c.c
index 3742ca1..50ed9e4 100644
--- a/drivers/input/touchscreen/ad7879-i2c.c
+++ b/drivers/input/touchscreen/ad7879-i2c.c
@@ -41,8 +41,12 @@ static int ad7879_i2c_read(void *client, u8 reg)
static int ad7879_i2c_multi_read(void *client, u8 first_reg, u8 count, u16 *buf)
{
u8 idx;
+
+ i2c_smbus_read_i2c_block_data(client, first_reg, count * 2, (u8 *)buf);
+
for (idx = 0; idx < count; ++idx)
- buf[idx] = ad7879_i2c_read(client, first_reg + idx);
+ buf[idx] = swab16(buf[idx]);
+
return 0;
}
--
1.7.0.2
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