From patchwork Wed Oct 31 15:55:45 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pantelis Antoniou X-Patchwork-Id: 1671931 Return-Path: X-Original-To: patchwork-linux-omap@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork2.kernel.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by patchwork2.kernel.org (Postfix) with ESMTP id 7F6F4DFB7B for ; Tue, 30 Oct 2012 18:14:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965251Ab2J3SNy (ORCPT ); Tue, 30 Oct 2012 14:13:54 -0400 Received: from li42-95.members.linode.com ([209.123.162.95]:59049 "EHLO li42-95.members.linode.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934095Ab2J3SMq (ORCPT ); Tue, 30 Oct 2012 14:12:46 -0400 Received: from sles11esa.localdomain (unknown [195.97.110.117]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) (Authenticated sender: panto) by li42-95.members.linode.com (Postfix) with ESMTPSA id B8A2D9C1DE; Tue, 30 Oct 2012 18:02:37 +0000 (UTC) From: Pantelis Antoniou To: Jonathan Cameron Cc: Pantelis Antoniou , "Patil, Rachna" , linux-iio@vger.kernel.org, linux-input@vger.kernel.org, linux-kernel@vger.kernel.org, Koen Kooi , Matt Porter , Russ Dill , linux-omap@vger.kernel.org Subject: [PATCH] ti_tscadc: Match mfd sub devices to regmap interface Date: Wed, 31 Oct 2012 17:55:45 +0200 Message-Id: <1351698945-3881-1-git-send-email-panto@antoniou-consulting.com> X-Mailer: git-send-email 1.7.12 Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org The MFD parent device now uses a regmap, instead of direct memory access. Use the same method in the sub devices to avoid nasty surprises. Also rework the channel initialization of tiadc a bit. Signed-off-by: Pantelis Antoniou --- drivers/iio/adc/ti_am335x_adc.c | 27 +++++++++++++++++++-------- drivers/input/touchscreen/ti_am335x_tsc.c | 16 +++++++++++++--- drivers/mfd/ti_am335x_tscadc.c | 7 +++++-- 3 files changed, 37 insertions(+), 13 deletions(-) diff --git a/drivers/iio/adc/ti_am335x_adc.c b/drivers/iio/adc/ti_am335x_adc.c index d48fd79..5f325c1 100644 --- a/drivers/iio/adc/ti_am335x_adc.c +++ b/drivers/iio/adc/ti_am335x_adc.c @@ -23,7 +23,9 @@ #include #include #include +#include +#include #include #include @@ -36,13 +38,17 @@ struct tiadc_device { static unsigned int tiadc_readl(struct tiadc_device *adc, unsigned int reg) { - return readl(adc->mfd_tscadc->tscadc_base + reg); + unsigned int val; + + val = (unsigned int)-1; + regmap_read(adc->mfd_tscadc->regmap_tscadc, reg, &val); + return val; } static void tiadc_writel(struct tiadc_device *adc, unsigned int reg, unsigned int val) { - writel(val, adc->mfd_tscadc->tscadc_base + reg); + regmap_write(adc->mfd_tscadc->regmap_tscadc, reg, val); } static void tiadc_step_config(struct tiadc_device *adc_dev) @@ -75,22 +81,24 @@ static void tiadc_step_config(struct tiadc_device *adc_dev) tiadc_writel(adc_dev, REG_SE, STPENB_STEPENB); } -static int tiadc_channel_init(struct iio_dev *indio_dev, int channels) +static int tiadc_channel_init(struct iio_dev *indio_dev, + struct tiadc_device *adc_dev) { struct iio_chan_spec *chan_array; struct iio_chan_spec *chan; char *s; int i, len, size, ret; + int channels = adc_dev->channels; - size = indio_dev->num_channels * (sizeof(struct iio_chan_spec) + 6); + size = channels * (sizeof(struct iio_chan_spec) + 6); chan_array = kzalloc(size, GFP_KERNEL); if (chan_array == NULL) return -ENOMEM; /* buffer space is after the array */ - s = (char *)(chan_array + indio_dev->num_channels); + s = (char *)(chan_array + channels); chan = chan_array; - for (i = 0; i < indio_dev->num_channels; i++, chan++, s += len + 1) { + for (i = 0; i < channels; i++, chan++, s += len + 1) { len = sprintf(s, "AIN%d", i); @@ -105,8 +113,9 @@ static int tiadc_channel_init(struct iio_dev *indio_dev, int channels) } indio_dev->channels = chan_array; + indio_dev->num_channels = channels; - size = (indio_dev->num_channels + 1) * sizeof(struct iio_map); + size = (channels + 1) * sizeof(struct iio_map); adc_dev->map = kzalloc(size, GFP_KERNEL); if (adc_dev->map == NULL) { kfree(chan_array); @@ -203,7 +212,7 @@ static int __devinit tiadc_probe(struct platform_device *pdev) tiadc_step_config(adc_dev); - err = tiadc_channel_init(indio_dev, adc_dev->channels); + err = tiadc_channel_init(indio_dev, adc_dev); if (err < 0) goto err_free_device; @@ -213,6 +222,8 @@ static int __devinit tiadc_probe(struct platform_device *pdev) platform_set_drvdata(pdev, indio_dev); + dev_info(&pdev->dev, "Initialized\n"); + return 0; err_free_channels: diff --git a/drivers/input/touchscreen/ti_am335x_tsc.c b/drivers/input/touchscreen/ti_am335x_tsc.c index 7a26810..d09e1a7 100644 --- a/drivers/input/touchscreen/ti_am335x_tsc.c +++ b/drivers/input/touchscreen/ti_am335x_tsc.c @@ -26,6 +26,7 @@ #include #include #include +#include #include @@ -64,13 +65,17 @@ struct titsc { static unsigned int titsc_readl(struct titsc *ts, unsigned int reg) { - return readl(ts->mfd_tscadc->tscadc_base + reg); + unsigned int val; + + val = (unsigned int)-1; + regmap_read(ts->mfd_tscadc->regmap_tscadc, reg, &val); + return val; } static void titsc_writel(struct titsc *tsc, unsigned int reg, unsigned int val) { - writel(val, tsc->mfd_tscadc->tscadc_base + reg); + regmap_write(tsc->mfd_tscadc->regmap_tscadc, reg, val); } /* @@ -455,10 +460,15 @@ static int __devinit titsc_probe(struct platform_device *pdev) /* register to the input system */ err = input_register_device(input_dev); - if (err) + if (err) { + dev_err(&pdev->dev, "Failed to register input device\n"); goto err_free_irq; + } platform_set_drvdata(pdev, ts_dev); + + dev_info(&pdev->dev, "Initialized OK\n"); + return 0; err_free_irq: diff --git a/drivers/mfd/ti_am335x_tscadc.c b/drivers/mfd/ti_am335x_tscadc.c index cbb8b70c..4a7041c 100644 --- a/drivers/mfd/ti_am335x_tscadc.c +++ b/drivers/mfd/ti_am335x_tscadc.c @@ -31,6 +31,7 @@ static unsigned int tscadc_readl(struct ti_tscadc_dev *tsadc, unsigned int reg) { unsigned int val; + val = (unsigned int)-1; regmap_read(tsadc->regmap_tscadc, reg, &val); return val; } @@ -68,7 +69,7 @@ static int __devinit ti_tscadc_probe(struct platform_device *pdev) int irq; int err, ctrl; int clk_value, clock_rate; - int tsc_wires, adc_channels = 0, total_channels; + int tsc_wires = 0, adc_channels = 0, total_channels; if (!pdata) { dev_err(&pdev->dev, "Could not find platform data\n"); @@ -78,7 +79,9 @@ static int __devinit ti_tscadc_probe(struct platform_device *pdev) if (pdata->adc_init) adc_channels = pdata->adc_init->adc_channels; - tsc_wires = pdata->tsc_init->wires; + if (pdata->tsc_init) + tsc_wires = pdata->tsc_init->wires; + total_channels = tsc_wires + adc_channels; if (total_channels > 8) {