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[87.8.15.130]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4391dc9ffcdsm146637945e9.15.2025.02.10.08.12.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 10 Feb 2025 08:12:59 -0800 (PST) From: Angelo Dureghello X-Google-Original-From: Angelo Dureghello Date: Mon, 10 Feb 2025 17:10:59 +0100 Subject: [PATCH v4 9/9] iio: adc: ad7606: add support for writing registers when using backend Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20250210-wip-bl-ad7606_add_backend_sw_mode-v4-9-160df18b1da7@baylibre.com> References: <20250210-wip-bl-ad7606_add_backend_sw_mode-v4-0-160df18b1da7@baylibre.com> In-Reply-To: <20250210-wip-bl-ad7606_add_backend_sw_mode-v4-0-160df18b1da7@baylibre.com> To: Michael Hennerich , Lars-Peter Clausen , Jonathan Cameron , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Alexandru Ardelean , David Lechner Cc: Jonathan Cameron , linux-fbdev@vger.kernel.org, linux-iio@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Guillaume Stols , Angelo Dureghello X-Mailer: b4 0.14.1 From: Guillaume Stols Add the logic for effectively enabling the software mode for the iio-backend, i.e. enabling the software mode channel configuration and implementing the register writing functions. Signed-off-by: Guillaume Stols Co-developed-by: Angelo Dureghello Signed-off-by: Angelo Dureghello --- drivers/iio/adc/ad7606.h | 15 +++++++++++++ drivers/iio/adc/ad7606_par.c | 52 ++++++++++++++++++++++++++++++++++++++++= ---- 2 files changed, 63 insertions(+), 4 deletions(-) diff --git a/drivers/iio/adc/ad7606.h b/drivers/iio/adc/ad7606.h index a35b526f3915..71a30525eaab 100644 --- a/drivers/iio/adc/ad7606.h +++ b/drivers/iio/adc/ad7606.h @@ -96,6 +96,21 @@ BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO), \ 0, 0, 16) =20 +#define AD7606_BI_SW_CHANNEL(num) \ + AD760X_CHANNEL(num, \ + /* mask separate */ \ + BIT(IIO_CHAN_INFO_SCALE), \ + /* mask type */ \ + 0, \ + /* mask all */ \ + BIT(IIO_CHAN_INFO_SAMP_FREQ) | \ + BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO), \ + /* mask separate available */ \ + BIT(IIO_CHAN_INFO_SCALE), \ + /* mask all available */ \ + BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO), \ + 16) + struct ad7606_state; =20 typedef int (*ad7606_scale_setup_cb_t)(struct iio_dev *indio_dev, diff --git a/drivers/iio/adc/ad7606_par.c b/drivers/iio/adc/ad7606_par.c index 64733b607aa8..335fb481bfde 100644 --- a/drivers/iio/adc/ad7606_par.c +++ b/drivers/iio/adc/ad7606_par.c @@ -19,6 +19,7 @@ #include =20 #include "ad7606.h" +#include "ad7606_bus_iface.h" =20 static const struct iio_chan_spec ad7606b_bi_channels[] =3D { AD7606_BI_CHANNEL(0), @@ -31,7 +32,19 @@ static const struct iio_chan_spec ad7606b_bi_channels[] = =3D { AD7606_BI_CHANNEL(7), }; =20 -static int ad7606_bi_update_scan_mode(struct iio_dev *indio_dev, const uns= igned long *scan_mask) +static const struct iio_chan_spec ad7606b_bi_sw_channels[] =3D { + AD7606_BI_SW_CHANNEL(0), + AD7606_BI_SW_CHANNEL(1), + AD7606_BI_SW_CHANNEL(2), + AD7606_BI_SW_CHANNEL(3), + AD7606_BI_SW_CHANNEL(4), + AD7606_BI_SW_CHANNEL(5), + AD7606_BI_SW_CHANNEL(6), + AD7606_BI_SW_CHANNEL(7), +}; + +static int ad7606_par_bus_update_scan_mode(struct iio_dev *indio_dev, + const unsigned long *scan_mask) { struct ad7606_state *st =3D iio_priv(indio_dev); unsigned int c, ret; @@ -48,7 +61,8 @@ static int ad7606_bi_update_scan_mode(struct iio_dev *ind= io_dev, const unsigned return 0; } =20 -static int ad7606_bi_setup_iio_backend(struct device *dev, struct iio_dev = *indio_dev) +static int ad7606_par_bus_setup_iio_backend(struct device *dev, + struct iio_dev *indio_dev) { struct ad7606_state *st =3D iio_priv(indio_dev); unsigned int ret, c; @@ -86,9 +100,39 @@ static int ad7606_bi_setup_iio_backend(struct device *d= ev, struct iio_dev *indio return 0; } =20 +static int ad7606_par_bus_reg_read(struct ad7606_state *st, unsigned int a= ddr) +{ + struct ad7606_platform_data *pdata =3D st->dev->platform_data; + int val, ret; + + ret =3D pdata->bus_reg_read(st->back, addr, &val); + if (ret) + return ret; + + return val; +} + +static int ad7606_par_bus_reg_write(struct ad7606_state *st, unsigned int = addr, + unsigned int val) +{ + struct ad7606_platform_data *pdata =3D st->dev->platform_data; + + return pdata->bus_reg_write(st->back, addr, val); +} + +static int ad7606_par_bus_sw_mode_config(struct iio_dev *indio_dev) +{ + indio_dev->channels =3D ad7606b_bi_sw_channels; + + return 0; +} + static const struct ad7606_bus_ops ad7606_bi_bops =3D { - .iio_backend_config =3D ad7606_bi_setup_iio_backend, - .update_scan_mode =3D ad7606_bi_update_scan_mode, + .iio_backend_config =3D ad7606_par_bus_setup_iio_backend, + .update_scan_mode =3D ad7606_par_bus_update_scan_mode, + .reg_read =3D ad7606_par_bus_reg_read, + .reg_write =3D ad7606_par_bus_reg_write, + .sw_mode_config =3D ad7606_par_bus_sw_mode_config, }; =20 static int ad7606_par16_read_block(struct device *dev, --=20 2.47.0