From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Patil, Rachna" Subject: [PATCH RESEND 7/7] IIO: ti_am335x_adc: Add DT support Date: Wed, 7 Nov 2012 12:22:04 +0530 Message-ID: <1352271124-5513-8-git-send-email-rachna@ti.com> References: <1352271124-5513-1-git-send-email-rachna@ti.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: In-Reply-To: <1352271124-5513-1-git-send-email-rachna@ti.com> Sender: linux-kernel-owner@vger.kernel.org To: linux-doc@vger.kernel.org, devicetree-discuss@lists.ozlabs.org, linux-kernel@vger.kernel.org, linux-input@vger.kernel.org, linux-iio@vger.kernel.org Cc: Rob Landley , Grant Likely , Rob Herring , Samuel Ortiz , Dmitry Torokhov , Dmitry Torokhov , Jonathan Cameron , "Patil, Rachna" List-Id: devicetree@vger.kernel.org Add DT support for client ADC driver. Signed-off-by: Patil, Rachna --- drivers/iio/adc/ti_am335x_adc.c | 24 ++++++++++++++++++++---- 1 files changed, 20 insertions(+), 4 deletions(-) diff --git a/drivers/iio/adc/ti_am335x_adc.c b/drivers/iio/adc/ti_am335x_adc.c index 02a43c8..1f1ec0c 100644 --- a/drivers/iio/adc/ti_am335x_adc.c +++ b/drivers/iio/adc/ti_am335x_adc.c @@ -22,6 +22,8 @@ #include #include #include +#include +#include #include #include @@ -141,11 +143,18 @@ static int __devinit tiadc_probe(struct platform_device *pdev) struct iio_dev *indio_dev; struct tiadc_device *adc_dev; struct ti_tscadc_dev *tscadc_dev = pdev->dev.platform_data; - struct mfd_tscadc_board *pdata; + struct mfd_tscadc_board *pdata = NULL; + struct device_node *node = NULL; int err; + u32 val32; - pdata = tscadc_dev->dev->platform_data; - if (!pdata || !pdata->adc_init) { + if (tscadc_dev->dev->of_node) { + node = tscadc_dev->dev->of_node; + node = of_find_node_by_name(node, "adc"); + } else + pdata = tscadc_dev->dev->platform_data; + + if (!pdata && !node) { dev_err(&pdev->dev, "Could not find platform data\n"); return -EINVAL; } @@ -159,7 +168,14 @@ static int __devinit tiadc_probe(struct platform_device *pdev) adc_dev = iio_priv(indio_dev); adc_dev->mfd_tscadc = tscadc_dev; - adc_dev->channels = pdata->adc_init->adc_channels; + if (node) { + err = of_property_read_u32(node, "adc-channels", &val32); + if (err < 0) + goto err_free_device; + else + adc_dev->channels = val32; + } else + adc_dev->channels = pdata->adc_init->adc_channels; indio_dev->dev.parent = &pdev->dev; indio_dev->name = dev_name(&pdev->dev); -- 1.7.0.4