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[185.246.87.17]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-378e780e029sm18111177f8f.116.2024.09.20.10.33.31 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 20 Sep 2024 10:33:31 -0700 (PDT) From: Guillaume Stols Date: Fri, 20 Sep 2024 17:33:27 +0000 Subject: [PATCH v2 07/10] iio: adc: ad7606: Add compatibility to fw_nodes Precedence: bulk X-Mailing-List: linux-fbdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20240920-ad7606_add_iio_backend_support-v2-7-0e78782ae7d0@baylibre.com> References: <20240920-ad7606_add_iio_backend_support-v2-0-0e78782ae7d0@baylibre.com> In-Reply-To: <20240920-ad7606_add_iio_backend_support-v2-0-0e78782ae7d0@baylibre.com> To: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= , Lars-Peter Clausen , Michael Hennerich , Jonathan Cameron , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Greg Kroah-Hartman , "Rafael J. Wysocki" , Jonathan Corbet , Michal Marek Cc: linux-pwm@vger.kernel.org, linux-kernel@vger.kernel.org, Michael Hennerich , linux-fbdev@vger.kernel.org, linux-iio@vger.kernel.org, devicetree@vger.kernel.org, linux-doc@vger.kernel.org, aardelean@baylibre.com, dlechner@baylibre.com, Guillaume Stols , jstephan@baylibre.com X-Mailer: b4 0.14.1 X-Developer-Signature: v=1; a=ed25519-sha256; t=1726853604; l=14598; i=gstols@baylibre.com; s=20240417; h=from:subject:message-id; bh=fuWeZdZAtXd8rMGyPZJvoL1he1KOv88DgrMKYX9gf5A=; b=dbMIwK0lwOnaaMdTebmlSP9dy4cLxLrx9/I8U1qI/hBlefobVsgli89cD96H91ZdchZJPxhik 5cmLe6R7qozDRWGrCGMcseX9pBF0dBx5Bvge0212Q2Xky88dJkEdb+w X-Developer-Key: i=gstols@baylibre.com; a=ed25519; pk=XvMm5WHuV67sGYOJZqIYzXndbaJOlNd8Q6li6vnb4Cs= On the parallel version, the current implementation is only compatible with id tables and won't work with fw_nodes, this commit intends to fix it. Also, chip info is moved in the .h file so to be accessible to all the driver files that can set a pointer to the corresponding chip as the driver data. Signed-off-by: Guillaume Stols --- drivers/iio/adc/ad7606.c | 208 ++++++++++++++++++++++++------------------- drivers/iio/adc/ad7606.h | 34 +++++-- drivers/iio/adc/ad7606_par.c | 29 +++--- drivers/iio/adc/ad7606_spi.c | 31 ++++--- 4 files changed, 173 insertions(+), 129 deletions(-) diff --git a/drivers/iio/adc/ad7606.c b/drivers/iio/adc/ad7606.c index b98057138295..7f2ff1674638 100644 --- a/drivers/iio/adc/ad7606.c +++ b/drivers/iio/adc/ad7606.c @@ -51,6 +51,116 @@ static const unsigned int ad7616_oversampling_avail[8] = { 1, 2, 4, 8, 16, 32, 64, 128, }; +static const struct iio_chan_spec ad7605_channels[] = { + IIO_CHAN_SOFT_TIMESTAMP(4), + AD7605_CHANNEL(0), + AD7605_CHANNEL(1), + AD7605_CHANNEL(2), + AD7605_CHANNEL(3), +}; + +static const struct iio_chan_spec ad7606_channels[] = { + IIO_CHAN_SOFT_TIMESTAMP(8), + AD7606_CHANNEL(0), + AD7606_CHANNEL(1), + AD7606_CHANNEL(2), + AD7606_CHANNEL(3), + AD7606_CHANNEL(4), + AD7606_CHANNEL(5), + AD7606_CHANNEL(6), + AD7606_CHANNEL(7), +}; + +/* + * The current assumption that this driver makes for AD7616, is that it's + * working in Hardware Mode with Serial, Burst and Sequencer modes activated. + * To activate them, following pins must be pulled high: + * -SER/PAR + * -SEQEN + * And following pins must be pulled low: + * -WR/BURST + * -DB4/SER1W + */ +static const struct iio_chan_spec ad7616_channels[] = { + IIO_CHAN_SOFT_TIMESTAMP(16), + AD7606_CHANNEL(0), + AD7606_CHANNEL(1), + AD7606_CHANNEL(2), + AD7606_CHANNEL(3), + AD7606_CHANNEL(4), + AD7606_CHANNEL(5), + AD7606_CHANNEL(6), + AD7606_CHANNEL(7), + AD7606_CHANNEL(8), + AD7606_CHANNEL(9), + AD7606_CHANNEL(10), + AD7606_CHANNEL(11), + AD7606_CHANNEL(12), + AD7606_CHANNEL(13), + AD7606_CHANNEL(14), + AD7606_CHANNEL(15), +}; + +const struct ad7606_chip_info ad7605_4_info = { + .channels = ad7605_channels, + .num_channels = 5, + .name = "ad7605-4", + .id = ID_AD7605_4, +}; +EXPORT_SYMBOL_NS_GPL(ad7605_4_info, IIO_AD7606); + +const struct ad7606_chip_info ad7606_8_info = { + .channels = ad7606_channels, + .num_channels = 9, + .oversampling_avail = ad7606_oversampling_avail, + .oversampling_num = ARRAY_SIZE(ad7606_oversampling_avail), + .name = "ad7606-8", + .id = ID_AD7606_8, +}; +EXPORT_SYMBOL_NS_GPL(ad7606_8_info, IIO_AD7606); + +const struct ad7606_chip_info ad7606_6_info = { + .channels = ad7606_channels, + .num_channels = 7, + .oversampling_avail = ad7606_oversampling_avail, + .oversampling_num = ARRAY_SIZE(ad7606_oversampling_avail), + .name = "ad7606-6", + .id = ID_AD7606_6, +}; +EXPORT_SYMBOL_NS_GPL(ad7606_6_info, IIO_AD7606); + +const struct ad7606_chip_info ad7606_4_info = { + .channels = ad7606_channels, + .num_channels = 5, + .oversampling_avail = ad7606_oversampling_avail, + .oversampling_num = ARRAY_SIZE(ad7606_oversampling_avail), + .name = "ad7606-4", + .id = ID_AD7606_4, +}; +EXPORT_SYMBOL_NS_GPL(ad7606_4_info, IIO_AD7606); + +const struct ad7606_chip_info ad7606b_info = { + .channels = ad7606_channels, + .num_channels = 9, + .oversampling_avail = ad7606_oversampling_avail, + .oversampling_num = ARRAY_SIZE(ad7606_oversampling_avail), + .name = "ad7606B", + .id = ID_AD7606B, +}; +EXPORT_SYMBOL_NS_GPL(ad7606b_info, IIO_AD7606); + +const struct ad7606_chip_info ad7616_info = { + .channels = ad7616_channels, + .num_channels = 17, + .oversampling_avail = ad7616_oversampling_avail, + .oversampling_num = ARRAY_SIZE(ad7616_oversampling_avail), + .os_req_reset = true, + .init_delay_ms = 15, + .name = "ad7616", + .id = ID_AD7616, +}; +EXPORT_SYMBOL_NS_GPL(ad7616_info, IIO_AD7606); + int ad7606_reset(struct ad7606_state *st) { if (st->gpio_reset) { @@ -395,96 +505,6 @@ static const struct attribute_group ad7606_attribute_group_range = { .attrs = ad7606_attributes_range, }; -static const struct iio_chan_spec ad7605_channels[] = { - IIO_CHAN_SOFT_TIMESTAMP(4), - AD7605_CHANNEL(0), - AD7605_CHANNEL(1), - AD7605_CHANNEL(2), - AD7605_CHANNEL(3), -}; - -static const struct iio_chan_spec ad7606_channels[] = { - IIO_CHAN_SOFT_TIMESTAMP(8), - AD7606_CHANNEL(0), - AD7606_CHANNEL(1), - AD7606_CHANNEL(2), - AD7606_CHANNEL(3), - AD7606_CHANNEL(4), - AD7606_CHANNEL(5), - AD7606_CHANNEL(6), - AD7606_CHANNEL(7), -}; - -/* - * The current assumption that this driver makes for AD7616, is that it's - * working in Hardware Mode with Serial, Burst and Sequencer modes activated. - * To activate them, following pins must be pulled high: - * -SER/PAR - * -SEQEN - * And following pins must be pulled low: - * -WR/BURST - * -DB4/SER1W - */ -static const struct iio_chan_spec ad7616_channels[] = { - IIO_CHAN_SOFT_TIMESTAMP(16), - AD7606_CHANNEL(0), - AD7606_CHANNEL(1), - AD7606_CHANNEL(2), - AD7606_CHANNEL(3), - AD7606_CHANNEL(4), - AD7606_CHANNEL(5), - AD7606_CHANNEL(6), - AD7606_CHANNEL(7), - AD7606_CHANNEL(8), - AD7606_CHANNEL(9), - AD7606_CHANNEL(10), - AD7606_CHANNEL(11), - AD7606_CHANNEL(12), - AD7606_CHANNEL(13), - AD7606_CHANNEL(14), - AD7606_CHANNEL(15), -}; - -static const struct ad7606_chip_info ad7606_chip_info_tbl[] = { - /* More devices added in future */ - [ID_AD7605_4] = { - .channels = ad7605_channels, - .num_channels = 5, - }, - [ID_AD7606_8] = { - .channels = ad7606_channels, - .num_channels = 9, - .oversampling_avail = ad7606_oversampling_avail, - .oversampling_num = ARRAY_SIZE(ad7606_oversampling_avail), - }, - [ID_AD7606_6] = { - .channels = ad7606_channels, - .num_channels = 7, - .oversampling_avail = ad7606_oversampling_avail, - .oversampling_num = ARRAY_SIZE(ad7606_oversampling_avail), - }, - [ID_AD7606_4] = { - .channels = ad7606_channels, - .num_channels = 5, - .oversampling_avail = ad7606_oversampling_avail, - .oversampling_num = ARRAY_SIZE(ad7606_oversampling_avail), - }, - [ID_AD7606B] = { - .channels = ad7606_channels, - .num_channels = 9, - .oversampling_avail = ad7606_oversampling_avail, - .oversampling_num = ARRAY_SIZE(ad7606_oversampling_avail), - }, - [ID_AD7616] = { - .channels = ad7616_channels, - .num_channels = 17, - .oversampling_avail = ad7616_oversampling_avail, - .oversampling_num = ARRAY_SIZE(ad7616_oversampling_avail), - .os_req_reset = true, - .init_delay_ms = 15, - }, -}; - static int ad7606_request_gpios(struct ad7606_state *st) { struct device *dev = st->dev; @@ -624,7 +644,7 @@ static void ad7606_pwm_disable(void *data) } int ad7606_probe(struct device *dev, int irq, void __iomem *base_address, - const char *name, unsigned int id, + const struct ad7606_chip_info *chip_info, const struct ad7606_bus_ops *bops) { struct ad7606_state *st; @@ -653,7 +673,7 @@ int ad7606_probe(struct device *dev, int irq, void __iomem *base_address, return dev_err_probe(dev, ret, "Failed to enable specified AVcc supply\n"); - st->chip_info = &ad7606_chip_info_tbl[id]; + st->chip_info = chip_info; if (st->chip_info->oversampling_num) { st->oversampling_avail = st->chip_info->oversampling_avail; @@ -676,7 +696,7 @@ int ad7606_probe(struct device *dev, int irq, void __iomem *base_address, indio_dev->info = &ad7606_info_no_os_or_range; } indio_dev->modes = INDIO_DIRECT_MODE; - indio_dev->name = name; + indio_dev->name = chip_info->name; indio_dev->channels = st->chip_info->channels; indio_dev->num_channels = st->chip_info->num_channels; @@ -758,7 +778,7 @@ int ad7606_probe(struct device *dev, int irq, void __iomem *base_address, NULL, &ad7606_interrupt, IRQF_TRIGGER_FALLING | IRQF_ONESHOT, - name, indio_dev); + chip_info->name, indio_dev); if (ret) return ret; diff --git a/drivers/iio/adc/ad7606.h b/drivers/iio/adc/ad7606.h index c13dda444526..18c87fe9a41a 100644 --- a/drivers/iio/adc/ad7606.h +++ b/drivers/iio/adc/ad7606.h @@ -38,8 +38,19 @@ AD760X_CHANNEL(num, BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),\ 0, BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO)) +enum ad7606_supported_device_ids { + ID_AD7605_4, + ID_AD7606_8, + ID_AD7606_6, + ID_AD7606_4, + ID_AD7606B, + ID_AD7616, +}; + /** * struct ad7606_chip_info - chip specific information + * @name device name + * @id device id * @channels: channel specification * @num_channels: number of channels * @oversampling_avail pointer to the array which stores the available @@ -50,6 +61,8 @@ * after a restart */ struct ad7606_chip_info { + enum ad7606_supported_device_ids id; + const char *name; const struct iio_chan_spec *channels; unsigned int num_channels; const unsigned int *oversampling_avail; @@ -150,19 +163,22 @@ struct ad7606_bus_ops { }; int ad7606_probe(struct device *dev, int irq, void __iomem *base_address, - const char *name, unsigned int id, + const struct ad7606_chip_info *info, const struct ad7606_bus_ops *bops); int ad7606_reset(struct ad7606_state *st); -enum ad7606_supported_device_ids { - ID_AD7605_4, - ID_AD7606_8, - ID_AD7606_6, - ID_AD7606_4, - ID_AD7606B, - ID_AD7616, -}; +extern const struct ad7606_chip_info ad7605_4_info; + +extern const struct ad7606_chip_info ad7606_8_info; + +extern const struct ad7606_chip_info ad7606_6_info; + +extern const struct ad7606_chip_info ad7606_4_info; + +extern const struct ad7606_chip_info ad7606b_info; + +extern const struct ad7606_chip_info ad7616_info; #ifdef CONFIG_PM_SLEEP extern const struct dev_pm_ops ad7606_pm_ops; diff --git a/drivers/iio/adc/ad7606_par.c b/drivers/iio/adc/ad7606_par.c index d651639c45eb..7bac39033955 100644 --- a/drivers/iio/adc/ad7606_par.c +++ b/drivers/iio/adc/ad7606_par.c @@ -11,6 +11,7 @@ #include #include #include +#include #include #include @@ -89,12 +90,20 @@ static const struct ad7606_bus_ops ad7606_par8_bops = { static int ad7606_par_probe(struct platform_device *pdev) { - const struct platform_device_id *id = platform_get_device_id(pdev); + const struct ad7606_chip_info *chip_info; + const struct platform_device_id *id; struct resource *res; void __iomem *addr; resource_size_t remap_size; int irq; + if (dev_fwnode(&pdev->dev)) { + chip_info = device_get_match_data(&pdev->dev); + } else { + id = platform_get_device_id(pdev); + chip_info = (const struct ad7606_chip_info *)id->driver_data; + } + irq = platform_get_irq(pdev, 0); if (irq < 0) return irq; @@ -106,25 +115,25 @@ static int ad7606_par_probe(struct platform_device *pdev) remap_size = resource_size(res); return ad7606_probe(&pdev->dev, irq, addr, - id->name, id->driver_data, + chip_info, remap_size > 1 ? &ad7606_par16_bops : &ad7606_par8_bops); } static const struct platform_device_id ad7606_driver_ids[] = { - { .name = "ad7605-4", .driver_data = ID_AD7605_4, }, - { .name = "ad7606-4", .driver_data = ID_AD7606_4, }, - { .name = "ad7606-6", .driver_data = ID_AD7606_6, }, - { .name = "ad7606-8", .driver_data = ID_AD7606_8, }, + { .name = "ad7605-4", .driver_data = (kernel_ulong_t)&ad7605_4_info, }, + { .name = "ad7606-4", .driver_data = (kernel_ulong_t)&ad7606_4_info, }, + { .name = "ad7606-6", .driver_data = (kernel_ulong_t)&ad7606_6_info, }, + { .name = "ad7606-8", .driver_data = (kernel_ulong_t)&ad7606_8_info, }, { } }; MODULE_DEVICE_TABLE(platform, ad7606_driver_ids); static const struct of_device_id ad7606_of_match[] = { - { .compatible = "adi,ad7605-4" }, - { .compatible = "adi,ad7606-4" }, - { .compatible = "adi,ad7606-6" }, - { .compatible = "adi,ad7606-8" }, + { .compatible = "adi,ad7605-4", .data = &ad7605_4_info }, + { .compatible = "adi,ad7606-4", .data = &ad7606_4_info }, + { .compatible = "adi,ad7606-6", .data = &ad7606_6_info }, + { .compatible = "adi,ad7606-8", .data = &ad7606_8_info }, { } }; MODULE_DEVICE_TABLE(of, ad7606_of_match); diff --git a/drivers/iio/adc/ad7606_spi.c b/drivers/iio/adc/ad7606_spi.c index d3fbc7c7a823..719f9e09a5f7 100644 --- a/drivers/iio/adc/ad7606_spi.c +++ b/drivers/iio/adc/ad7606_spi.c @@ -307,10 +307,10 @@ static const struct ad7606_bus_ops ad7606B_spi_bops = { static int ad7606_spi_probe(struct spi_device *spi) { - const struct spi_device_id *id = spi_get_device_id(spi); + const struct ad7606_chip_info *chip_info = spi_get_device_match_data(spi); const struct ad7606_bus_ops *bops; - switch (id->driver_data) { + switch (chip_info->id) { case ID_AD7616: bops = &ad7616_spi_bops; break; @@ -323,28 +323,27 @@ static int ad7606_spi_probe(struct spi_device *spi) } return ad7606_probe(&spi->dev, spi->irq, NULL, - id->name, id->driver_data, - bops); + chip_info, bops); } static const struct spi_device_id ad7606_id_table[] = { - { "ad7605-4", ID_AD7605_4 }, - { "ad7606-4", ID_AD7606_4 }, - { "ad7606-6", ID_AD7606_6 }, - { "ad7606-8", ID_AD7606_8 }, - { "ad7606b", ID_AD7606B }, - { "ad7616", ID_AD7616 }, + { "ad7605-4", (kernel_ulong_t)&ad7605_4_info }, + { "ad7606-4", (kernel_ulong_t)&ad7606_4_info }, + { "ad7606-6", (kernel_ulong_t)&ad7606_6_info }, + { "ad7606-8", (kernel_ulong_t)&ad7606_8_info }, + { "ad7606b", (kernel_ulong_t)&ad7606b_info }, + { "ad7616", (kernel_ulong_t)&ad7616_info }, { } }; MODULE_DEVICE_TABLE(spi, ad7606_id_table); static const struct of_device_id ad7606_of_match[] = { - { .compatible = "adi,ad7605-4" }, - { .compatible = "adi,ad7606-4" }, - { .compatible = "adi,ad7606-6" }, - { .compatible = "adi,ad7606-8" }, - { .compatible = "adi,ad7606b" }, - { .compatible = "adi,ad7616" }, + { .compatible = "adi,ad7605-4", &ad7605_4_info }, + { .compatible = "adi,ad7606-4", &ad7606_4_info }, + { .compatible = "adi,ad7606-6", &ad7606_6_info }, + { .compatible = "adi,ad7606-8", &ad7606_8_info }, + { .compatible = "adi,ad7606b", &ad7606b_info }, + { .compatible = "adi,ad7616", &ad7616_info }, { } }; MODULE_DEVICE_TABLE(of, ad7606_of_match);