Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754083AbbERNXF (ORCPT ); Mon, 18 May 2015 09:23:05 -0400 Received: from bytesatwork.ch ([91.135.72.15]:33476 "EHLO bytesatwork.ch" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752807AbbERNWu (ORCPT ); Mon, 18 May 2015 09:22:50 -0400 From: =?UTF-8?q?Urs=20F=C3=A4ssler?= To: jic23@kernel.org, angelo.compagnucci@gmail.com, urs.fassler@bytesatwork.ch Cc: iivanov@mm-sol.com, ezequiel.garcia@imgtec.com, jacob.jun.pan@linux.intel.com, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-iio@vger.kernel.org Subject: [PATCH] iio: adc128s052: add support for adc122s021 Date: Mon, 18 May 2015 15:22:44 +0200 Message-Id: <1431955364-25059-2-git-send-email-urs.fassler@bytesatwork.ch> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1431955364-25059-1-git-send-email-urs.fassler@bytesatwork.ch> References: <1431955364-25059-1-git-send-email-urs.fassler@bytesatwork.ch> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 4584 Lines: 131 Signed-off-by: Urs Fässler --- .../devicetree/bindings/iio/adc/ti-adc128s052.txt | 4 +-- drivers/iio/adc/Kconfig | 4 +-- drivers/iio/adc/ti-adc128s052.c | 30 +++++++++++++++++----- 3 files changed, 28 insertions(+), 10 deletions(-) diff --git a/Documentation/devicetree/bindings/iio/adc/ti-adc128s052.txt b/Documentation/devicetree/bindings/iio/adc/ti-adc128s052.txt index 42ca7de..15ca6b4 100644 --- a/Documentation/devicetree/bindings/iio/adc/ti-adc128s052.txt +++ b/Documentation/devicetree/bindings/iio/adc/ti-adc128s052.txt @@ -1,7 +1,7 @@ -* Texas Instruments' ADC128S052 ADC chip +* Texas Instruments' ADC128S052 and ADC122S021 ADC chip Required properties: - - compatible: Should be "ti,adc128s052" + - compatible: Should be "ti,adc128s052" or "ti,adc122s021" - reg: spi chip select number for the device - vref-supply: The regulator supply for ADC reference voltage diff --git a/drivers/iio/adc/Kconfig b/drivers/iio/adc/Kconfig index e36a73e..92c319c 100644 --- a/drivers/iio/adc/Kconfig +++ b/drivers/iio/adc/Kconfig @@ -285,11 +285,11 @@ config TI_ADC081C called ti-adc081c. config TI_ADC128S052 - tristate "Texas Instruments ADC128S052" + tristate "Texas Instruments ADC128S052/ADC122S021" depends on SPI help If you say yes here you get support for Texas Instruments ADC128S052 - chip. + and ADC122S021 chip. This driver can also be built as a module. If so, the module will be called ti-adc128s052. diff --git a/drivers/iio/adc/ti-adc128s052.c b/drivers/iio/adc/ti-adc128s052.c index 655cb56..915be6b 100644 --- a/drivers/iio/adc/ti-adc128s052.c +++ b/drivers/iio/adc/ti-adc128s052.c @@ -1,9 +1,10 @@ /* * Copyright (C) 2014 Angelo Compagnucci * - * Driver for Texas Instruments' ADC128S052 ADC chip. - * Datasheet can be found here: + * Driver for Texas Instruments' ADC128S052 and ADC122S021 ADC chip. + * Datasheets can be found here: * http://www.ti.com/lit/ds/symlink/adc128s052.pdf + * http://www.ti.com/lit/ds/symlink/adc122s021.pdf * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as @@ -16,6 +17,11 @@ #include #include +struct adc128_configuration { + const struct iio_chan_spec *channels; + u8 num_channels; +}; + struct adc128 { struct spi_device *spi; @@ -92,7 +98,7 @@ static int adc128_read_raw(struct iio_dev *indio_dev, .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE) \ } -static const struct iio_chan_spec adc128_channels[] = { +static const struct iio_chan_spec adc128s052_channels[] = { ADC128_VOLTAGE_CHANNEL(0), ADC128_VOLTAGE_CHANNEL(1), ADC128_VOLTAGE_CHANNEL(2), @@ -103,6 +109,16 @@ static const struct iio_chan_spec adc128_channels[] = { ADC128_VOLTAGE_CHANNEL(7), }; +static const struct iio_chan_spec adc122s021_channels[] = { + ADC128_VOLTAGE_CHANNEL(0), + ADC128_VOLTAGE_CHANNEL(1), +}; + +static const struct adc128_configuration adc128_config[] = { + { adc128s052_channels, ARRAY_SIZE(adc128s052_channels) }, + { adc122s021_channels, ARRAY_SIZE(adc122s021_channels) }, +}; + static const struct iio_info adc128_info = { .read_raw = adc128_read_raw, .driver_module = THIS_MODULE, @@ -112,6 +128,7 @@ static int adc128_probe(struct spi_device *spi) { struct iio_dev *indio_dev; struct adc128 *adc; + int config = spi_get_device_id(spi)->driver_data; int ret; indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*adc)); @@ -128,8 +145,8 @@ static int adc128_probe(struct spi_device *spi) indio_dev->modes = INDIO_DIRECT_MODE; indio_dev->info = &adc128_info; - indio_dev->channels = adc128_channels; - indio_dev->num_channels = ARRAY_SIZE(adc128_channels); + indio_dev->channels = adc128_config[config].channels; + indio_dev->num_channels = adc128_config[config].num_channels; adc->reg = devm_regulator_get(&spi->dev, "vref"); if (IS_ERR(adc->reg)) @@ -158,7 +175,8 @@ static int adc128_remove(struct spi_device *spi) } static const struct spi_device_id adc128_id[] = { - { "adc128s052", 0}, + { "adc128s052", 0}, /* index into adc128_config */ + { "adc122s021", 1}, { } }; MODULE_DEVICE_TABLE(spi, adc128_id); -- 2.1.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/