From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932427Ab3LWRsv (ORCPT ); Mon, 23 Dec 2013 12:48:51 -0500 Received: from top.free-electrons.com ([176.31.233.9]:49438 "EHLO mail.free-electrons.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S932368Ab3LWRsT (ORCPT ); Mon, 23 Dec 2013 12:48:19 -0500 From: Alexandre Belloni To: Jonathan Cameron Cc: lars@metafoo.de, Marek Vasut , harald@ccbib.org, hector.palacios@digi.com, linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org, Alexandre Belloni Subject: [PATCHv5 RESEND 4/4] iio: mxs-lradc: convert is_divided to a bitmap Date: Mon, 23 Dec 2013 18:48:04 +0100 Message-Id: <1387820884-28140-5-git-send-email-alexandre.belloni@free-electrons.com> X-Mailer: git-send-email 1.8.3.2 In-Reply-To: <1387820884-28140-1-git-send-email-alexandre.belloni@free-electrons.com> References: <1387820884-28140-1-git-send-email-alexandre.belloni@free-electrons.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org mxs_lradc.is_divided was an unsigned long array. Convert it to a bitmap to save some memory. Signed-off-by: Alexandre Belloni --- drivers/staging/iio/adc/mxs-lradc.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/staging/iio/adc/mxs-lradc.c b/drivers/staging/iio/adc/mxs-lradc.c index a58c6aaa94d3..df71669bb60e 100644 --- a/drivers/staging/iio/adc/mxs-lradc.c +++ b/drivers/staging/iio/adc/mxs-lradc.c @@ -211,7 +211,7 @@ struct mxs_lradc { const uint32_t *vref_mv; struct mxs_lradc_scale scale_avail[LRADC_MAX_TOTAL_CHANS][2]; - unsigned int is_divided[LRADC_MAX_TOTAL_CHANS]; + unsigned long is_divided; /* * Touchscreen LRADC channels receives a private slot in the CTRL4 @@ -920,7 +920,7 @@ static int mxs_lradc_read_raw(struct iio_dev *iio_dev, *val = lradc->vref_mv[chan->channel]; *val2 = chan->scan_type.realbits - - lradc->is_divided[chan->channel]; + test_bit(chan->channel, &lradc->is_divided); return IIO_VAL_FRACTIONAL_LOG2; case IIO_CHAN_INFO_OFFSET: @@ -965,14 +965,14 @@ static int mxs_lradc_write_raw(struct iio_dev *iio_dev, /* divider by two disabled */ writel(1 << LRADC_CTRL2_DIVIDE_BY_TWO_OFFSET, lradc->base + LRADC_CTRL2 + STMP_OFFSET_REG_CLR); - lradc->is_divided[chan->channel] = 0; + clear_bit(chan->channel, &lradc->is_divided); ret = 0; } else if (val == scale_avail[MXS_LRADC_DIV_ENABLED].integer && val2 == scale_avail[MXS_LRADC_DIV_ENABLED].nano) { /* divider by two enabled */ writel(1 << LRADC_CTRL2_DIVIDE_BY_TWO_OFFSET, lradc->base + LRADC_CTRL2 + STMP_OFFSET_REG_SET); - lradc->is_divided[chan->channel] = 1; + set_bit(chan->channel, &lradc->is_divided); ret = 0; } -- 1.8.3.2