From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from ns.pmeerw.net ([87.118.82.44]:58636 "EHLO pmeerw.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934012AbaFCWm2 (ORCPT ); Tue, 3 Jun 2014 18:42:28 -0400 From: Peter Meerwald To: linux-iio@vger.kernel.org Cc: lars@metafoo.de, knaack.h@gmx.de, Peter Meerwald Subject: [PATCH 11/15] iio:adc:ad799x: Add helper function to read/write config register Date: Wed, 4 Jun 2014 00:42:11 +0200 Message-Id: <1401835335-29969-12-git-send-email-pmeerw@pmeerw.net> In-Reply-To: <1401835335-29969-1-git-send-email-pmeerw@pmeerw.net> References: <1401835335-29969-1-git-send-email-pmeerw@pmeerw.net> Sender: linux-iio-owner@vger.kernel.org List-Id: linux-iio@vger.kernel.org 16-bit on ad7997/ad7998, 8-bit elsewhere Signed-off-by: Peter Meerwald --- drivers/iio/adc/ad799x.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/drivers/iio/adc/ad799x.c b/drivers/iio/adc/ad799x.c index dbc7c2b..0219970 100644 --- a/drivers/iio/adc/ad799x.c +++ b/drivers/iio/adc/ad799x.c @@ -136,6 +136,30 @@ struct ad799x_state { unsigned int transfer_size; }; +static int ad799x_write_config(struct ad799x_state *st, u16 val) +{ + switch (st->id) { + case ad7997: + case ad7998: + return i2c_smbus_write_word_swapped(st->client, AD7998_CONF_REG, + val); + default: + return i2c_smbus_write_byte_data(st->client, AD7998_CONF_REG, + val); + } +} + +static int ad799x_read_config(struct ad799x_state *st) +{ + switch (st->id) { + case ad7997: + case ad7998: + return i2c_smbus_read_word_swapped(st->client, AD7998_CONF_REG); + default: + return i2c_smbus_read_byte_data(st->client, AD7998_CONF_REG); + } +} + /** * ad799x_trigger_handler() bh of trigger launched polling to ring buffer * -- 1.9.1