From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from ns.pmeerw.net ([87.118.82.44]:47800 "EHLO pmeerw.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750909AbaFLEy3 (ORCPT ); Thu, 12 Jun 2014 00:54:29 -0400 From: Peter Meerwald To: linux-iio@vger.kernel.org Cc: jic23@kernel.org, Peter Meerwald Subject: [PATCH v3 08/12] iio:adc:ad799x: Add helper function to read/write config register Date: Thu, 12 Jun 2014 06:54:12 +0200 Message-Id: <1402548856-3564-9-git-send-email-pmeerw@pmeerw.net> In-Reply-To: <1402548856-3564-1-git-send-email-pmeerw@pmeerw.net> References: <1402548856-3564-1-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 Acked-by: Lars-Peter Clausen --- 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 92401c9..fe2a9b1 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