From patchwork Tue Jan 23 15:14:30 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nuno Sa via B4 Relay X-Patchwork-Id: 765387 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 844865FEF5; Tue, 23 Jan 2024 15:14:34 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706022874; cv=none; b=hO1bczKHTkiRKvi2xT+7H+nypihnVCvwsE2u39JFPYR2M+KyaI9oYxdFBkrtd0vtgoATCtf9cfY3TISNAULoe9qzG/sL+HkybcpTYBz70dnbM98b9nTzlbMpRkqjbTJnVAOdjjN1DENIkGXIHNdhkbKxjyipAxJBz7zXZe9dsRc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706022874; c=relaxed/simple; bh=2Z+0nCFmYdGubogZPMYXdqlK11PHPFycjvHz8D5ZVns=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=g/LbiNi0mrEHT4WpDqwasB1CfsAdK8pmX3EWCqZbdZwIev/V585rZ0TyF/VAh7rp1FvfTXKl2feEsR+mQFmaKrD1+PFtmeW3SE6a/rlyrll5RON5P9Dcj6Hj719qmsgo9QNhOahyt3nmQiqPDbjxGrVejFZ+XfUDOMnbSdzH6Ao= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=JTSGKayX; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="JTSGKayX" Received: by smtp.kernel.org (Postfix) with ESMTPS id 11576C32785; Tue, 23 Jan 2024 15:14:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1706022874; bh=2Z+0nCFmYdGubogZPMYXdqlK11PHPFycjvHz8D5ZVns=; h=From:Date:Subject:References:In-Reply-To:To:Cc:Reply-To:From; b=JTSGKayXYuarh2d4dAp5TF6bzAO/G8jkkxBFHUsKGndKmn5MvSRnLt/6kZtJM8QuY 9tUVAUAlibMr7w6ta6RHdtqc/fSKu2q4R02eshwkcbny3cZC/z6/0bbJDq7bm5xW4i WMdNi9FoKAeOi411jPAHL9cafVF0f9ecB1Io3oT6Ef6L7D6NfVcS6FdLRzX3ThZTg8 2swQIfW5R/iiNlzAMgr3MKn0Xj0E7ZnUnB0ZVUPszTmBdXUkB91azlShXqBVzpvY1h L4XM1YOF6RAH4Pb54hXZxVCt+Z4Kg2SoAiWKiHdFdZ8PQFc7nHjHH8btErTXbbgUL1 G4hPZOZQtaMIw== Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id F4114C47DDF; Tue, 23 Jan 2024 15:14:33 +0000 (UTC) From: Nuno Sa via B4 Relay Date: Tue, 23 Jan 2024 16:14:30 +0100 Subject: [PATCH v7 9/9] iio: adc: adi-axi-adc: move to backend framework Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20240123-iio-backend-v7-9-1bff236b8693@analog.com> References: <20240123-iio-backend-v7-0-1bff236b8693@analog.com> In-Reply-To: <20240123-iio-backend-v7-0-1bff236b8693@analog.com> To: linux-iio@vger.kernel.org, devicetree@vger.kernel.org Cc: Lars-Peter Clausen , Michael Hennerich , Jonathan Cameron , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Greg Kroah-Hartman , "Rafael J. Wysocki" , Frank Rowand , Olivier Moysan , Saravana Kannan X-Mailer: b4 0.12.3 X-Developer-Signature: v=1; a=ed25519-sha256; t=1706022871; l=18591; i=nuno.sa@analog.com; s=20231116; h=from:subject:message-id; bh=4bn+vELGCYbT9SA7PrWRtNuyXAcG10OvVFbwuulwbhM=; b=w8qMqoJgkwxsIJ7EK43EfpAtdv5MyetQTkKVMT1MdW+nW/EibsgwkVxkFcqaeBtROylHdn8nD E+mjJL3T9pLCvlvUzIYwvTDyj9oZQqot4XhJ4Fips/mXlU7j0Gxi5Zx X-Developer-Key: i=nuno.sa@analog.com; a=ed25519; pk=3NQwYA013OUYZsmDFBf8rmyyr5iQlxV/9H4/Df83o1E= X-Endpoint-Received: by B4 Relay for nuno.sa@analog.com/20231116 with auth_id=100 X-Original-From: Nuno Sa Reply-To: From: Nuno Sa Move to the IIO backend framework. Devices supported by adi-axi-adc now register themselves as backend devices. Signed-off-by: Nuno Sa --- drivers/iio/adc/Kconfig | 2 +- drivers/iio/adc/adi-axi-adc.c | 382 +++++++++--------------------------- include/linux/iio/adc/adi-axi-adc.h | 68 ------- 3 files changed, 94 insertions(+), 358 deletions(-) diff --git a/drivers/iio/adc/Kconfig b/drivers/iio/adc/Kconfig index 61736dc21d2a..977832d797e1 100644 --- a/drivers/iio/adc/Kconfig +++ b/drivers/iio/adc/Kconfig @@ -325,7 +325,7 @@ config ADI_AXI_ADC select IIO_BUFFER_HW_CONSUMER select IIO_BUFFER_DMAENGINE select REGMAP_MMIO - depends on OF + select IIO_BACKEND help Say yes here to build support for Analog Devices Generic AXI ADC IP core. The IP core is used for interfacing with diff --git a/drivers/iio/adc/adi-axi-adc.c b/drivers/iio/adc/adi-axi-adc.c index 0f21d1d98b9f..05b33b1d1608 100644 --- a/drivers/iio/adc/adi-axi-adc.c +++ b/drivers/iio/adc/adi-axi-adc.c @@ -8,6 +8,7 @@ #include #include +#include #include #include #include @@ -17,13 +18,11 @@ #include #include -#include -#include -#include -#include - #include -#include +#include +#include +#include +#include /* * Register definitions: @@ -44,6 +43,7 @@ #define ADI_AXI_REG_CHAN_CTRL_PN_SEL_OWR BIT(10) #define ADI_AXI_REG_CHAN_CTRL_IQCOR_EN BIT(9) #define ADI_AXI_REG_CHAN_CTRL_DCFILT_EN BIT(8) +#define ADI_AXI_REG_CHAN_CTRL_FMT_MASK GENMASK(6, 4) #define ADI_AXI_REG_CHAN_CTRL_FMT_SIGNEXT BIT(6) #define ADI_AXI_REG_CHAN_CTRL_FMT_TYPE BIT(5) #define ADI_AXI_REG_CHAN_CTRL_FMT_EN BIT(4) @@ -55,286 +55,100 @@ ADI_AXI_REG_CHAN_CTRL_FMT_EN | \ ADI_AXI_REG_CHAN_CTRL_ENABLE) -struct adi_axi_adc_core_info { - unsigned int version; -}; - struct adi_axi_adc_state { - struct mutex lock; - - struct adi_axi_adc_client *client; struct regmap *regmap; -}; - -struct adi_axi_adc_client { - struct list_head entry; - struct adi_axi_adc_conv conv; - struct adi_axi_adc_state *state; struct device *dev; - const struct adi_axi_adc_core_info *info; }; -static LIST_HEAD(registered_clients); -static DEFINE_MUTEX(registered_clients_lock); - -static struct adi_axi_adc_client *conv_to_client(struct adi_axi_adc_conv *conv) -{ - return container_of(conv, struct adi_axi_adc_client, conv); -} - -void *adi_axi_adc_conv_priv(struct adi_axi_adc_conv *conv) -{ - struct adi_axi_adc_client *cl = conv_to_client(conv); - - return (char *)cl + ALIGN(sizeof(struct adi_axi_adc_client), - IIO_DMA_MINALIGN); -} -EXPORT_SYMBOL_NS_GPL(adi_axi_adc_conv_priv, IIO_ADI_AXI); - -static int adi_axi_adc_config_dma_buffer(struct device *dev, - struct iio_dev *indio_dev) -{ - const char *dma_name; - - if (!device_property_present(dev, "dmas")) - return 0; - - if (device_property_read_string(dev, "dma-names", &dma_name)) - dma_name = "rx"; - - return devm_iio_dmaengine_buffer_setup(indio_dev->dev.parent, - indio_dev, dma_name); -} - -static int adi_axi_adc_read_raw(struct iio_dev *indio_dev, - struct iio_chan_spec const *chan, - int *val, int *val2, long mask) -{ - struct adi_axi_adc_state *st = iio_priv(indio_dev); - struct adi_axi_adc_conv *conv = &st->client->conv; - - if (!conv->read_raw) - return -EOPNOTSUPP; - - return conv->read_raw(conv, chan, val, val2, mask); -} - -static int adi_axi_adc_write_raw(struct iio_dev *indio_dev, - struct iio_chan_spec const *chan, - int val, int val2, long mask) -{ - struct adi_axi_adc_state *st = iio_priv(indio_dev); - struct adi_axi_adc_conv *conv = &st->client->conv; - - if (!conv->write_raw) - return -EOPNOTSUPP; - - return conv->write_raw(conv, chan, val, val2, mask); -} - -static int adi_axi_adc_read_avail(struct iio_dev *indio_dev, - struct iio_chan_spec const *chan, - const int **vals, int *type, int *length, - long mask) +static int axi_adc_enable(struct iio_backend *back) { - struct adi_axi_adc_state *st = iio_priv(indio_dev); - struct adi_axi_adc_conv *conv = &st->client->conv; - - if (!conv->read_avail) - return -EOPNOTSUPP; - - return conv->read_avail(conv, chan, vals, type, length, mask); -} - -static int adi_axi_adc_update_scan_mode(struct iio_dev *indio_dev, - const unsigned long *scan_mask) -{ - struct adi_axi_adc_state *st = iio_priv(indio_dev); - struct adi_axi_adc_conv *conv = &st->client->conv; - unsigned int i; + struct adi_axi_adc_state *st = iio_backend_get_priv(back); int ret; - for (i = 0; i < conv->chip_info->num_channels; i++) { - if (test_bit(i, scan_mask)) - ret = regmap_set_bits(st->regmap, - ADI_AXI_REG_CHAN_CTRL(i), - ADI_AXI_REG_CHAN_CTRL_ENABLE); - else - ret = regmap_clear_bits(st->regmap, - ADI_AXI_REG_CHAN_CTRL(i), - ADI_AXI_REG_CHAN_CTRL_ENABLE); - if (ret) - return ret; - } + ret = regmap_set_bits(st->regmap, ADI_AXI_REG_RSTN, + ADI_AXI_REG_RSTN_MMCM_RSTN); + if (ret) + return ret; - return 0; + fsleep(10); + return regmap_set_bits(st->regmap, ADI_AXI_REG_RSTN, + ADI_AXI_REG_RSTN_RSTN | ADI_AXI_REG_RSTN_MMCM_RSTN); } -static struct adi_axi_adc_conv *adi_axi_adc_conv_register(struct device *dev, - size_t sizeof_priv) +static void axi_adc_disable(struct iio_backend *back) { - struct adi_axi_adc_client *cl; - size_t alloc_size; - - alloc_size = ALIGN(sizeof(struct adi_axi_adc_client), IIO_DMA_MINALIGN); - if (sizeof_priv) - alloc_size += ALIGN(sizeof_priv, IIO_DMA_MINALIGN); + struct adi_axi_adc_state *st = iio_backend_get_priv(back); - cl = kzalloc(alloc_size, GFP_KERNEL); - if (!cl) - return ERR_PTR(-ENOMEM); - - mutex_lock(®istered_clients_lock); - - cl->dev = get_device(dev); - - list_add_tail(&cl->entry, ®istered_clients); - - mutex_unlock(®istered_clients_lock); - - return &cl->conv; + regmap_write(st->regmap, ADI_AXI_REG_RSTN, 0); } -static void adi_axi_adc_conv_unregister(struct adi_axi_adc_conv *conv) +static int axi_adc_data_format_set(struct iio_backend *back, unsigned int chan, + const struct iio_backend_data_fmt *data) { - struct adi_axi_adc_client *cl = conv_to_client(conv); - - mutex_lock(®istered_clients_lock); + struct adi_axi_adc_state *st = iio_backend_get_priv(back); + u32 val; - list_del(&cl->entry); - put_device(cl->dev); + if (!data->enable) + return regmap_clear_bits(st->regmap, + ADI_AXI_REG_CHAN_CTRL(chan), + ADI_AXI_REG_CHAN_CTRL_FMT_EN); - mutex_unlock(®istered_clients_lock); + val = FIELD_PREP(ADI_AXI_REG_CHAN_CTRL_FMT_EN, true); + if (data->sign_extend) + val |= FIELD_PREP(ADI_AXI_REG_CHAN_CTRL_FMT_SIGNEXT, true); + if (data->type == IIO_BACKEND_OFFSET_BINARY) + val |= FIELD_PREP(ADI_AXI_REG_CHAN_CTRL_FMT_TYPE, true); - kfree(cl); + return regmap_update_bits(st->regmap, ADI_AXI_REG_CHAN_CTRL(chan), + ADI_AXI_REG_CHAN_CTRL_FMT_MASK, val); } -static void devm_adi_axi_adc_conv_release(void *conv) +static int axi_adc_chan_enable(struct iio_backend *back, unsigned int chan) { - adi_axi_adc_conv_unregister(conv); -} - -struct adi_axi_adc_conv *devm_adi_axi_adc_conv_register(struct device *dev, - size_t sizeof_priv) -{ - struct adi_axi_adc_conv *conv; - int ret; - - conv = adi_axi_adc_conv_register(dev, sizeof_priv); - if (IS_ERR(conv)) - return conv; - - ret = devm_add_action_or_reset(dev, devm_adi_axi_adc_conv_release, - conv); - if (ret) - return ERR_PTR(ret); + struct adi_axi_adc_state *st = iio_backend_get_priv(back); - return conv; + return regmap_set_bits(st->regmap, ADI_AXI_REG_CHAN_CTRL(chan), + ADI_AXI_REG_CHAN_CTRL_ENABLE); } -EXPORT_SYMBOL_NS_GPL(devm_adi_axi_adc_conv_register, IIO_ADI_AXI); - -static const struct iio_info adi_axi_adc_info = { - .read_raw = &adi_axi_adc_read_raw, - .write_raw = &adi_axi_adc_write_raw, - .update_scan_mode = &adi_axi_adc_update_scan_mode, - .read_avail = &adi_axi_adc_read_avail, -}; -static const struct adi_axi_adc_core_info adi_axi_adc_10_0_a_info = { - .version = ADI_AXI_PCORE_VER(10, 0, 'a'), -}; - -static struct adi_axi_adc_client *adi_axi_adc_attach_client(struct device *dev) +static int axi_adc_chan_disable(struct iio_backend *back, unsigned int chan) { - const struct adi_axi_adc_core_info *info; - struct adi_axi_adc_client *cl; - struct device_node *cln; - - info = of_device_get_match_data(dev); - if (!info) - return ERR_PTR(-ENODEV); - - cln = of_parse_phandle(dev->of_node, "adi,adc-dev", 0); - if (!cln) { - dev_err(dev, "No 'adi,adc-dev' node defined\n"); - return ERR_PTR(-ENODEV); - } - - mutex_lock(®istered_clients_lock); + struct adi_axi_adc_state *st = iio_backend_get_priv(back); - list_for_each_entry(cl, ®istered_clients, entry) { - if (!cl->dev) - continue; - - if (cl->dev->of_node != cln) - continue; - - if (!try_module_get(cl->dev->driver->owner)) { - mutex_unlock(®istered_clients_lock); - of_node_put(cln); - return ERR_PTR(-ENODEV); - } - - get_device(cl->dev); - cl->info = info; - mutex_unlock(®istered_clients_lock); - of_node_put(cln); - return cl; - } - - mutex_unlock(®istered_clients_lock); - of_node_put(cln); - - return ERR_PTR(-EPROBE_DEFER); + return regmap_clear_bits(st->regmap, ADI_AXI_REG_CHAN_CTRL(chan), + ADI_AXI_REG_CHAN_CTRL_ENABLE); } -static int adi_axi_adc_setup_channels(struct device *dev, - struct adi_axi_adc_state *st) +static struct iio_buffer *axi_adc_request_buffer(struct iio_backend *back, + struct iio_dev *indio_dev) { - struct adi_axi_adc_conv *conv = &st->client->conv; - int i, ret; + struct adi_axi_adc_state *st = iio_backend_get_priv(back); + struct iio_buffer *buffer; + const char *dma_name; + int ret; - if (conv->preenable_setup) { - ret = conv->preenable_setup(conv); - if (ret) - return ret; - } + if (device_property_read_string(st->dev, "dma-names", &dma_name)) + dma_name = "rx"; - for (i = 0; i < conv->chip_info->num_channels; i++) { - ret = regmap_write(st->regmap, ADI_AXI_REG_CHAN_CTRL(i), - ADI_AXI_REG_CHAN_CTRL_DEFAULTS); - if (ret) - return ret; + buffer = iio_dmaengine_buffer_alloc(st->dev, dma_name); + if (IS_ERR(buffer)) { + dev_err(st->dev, "Could not get DMA buffer, %ld\n", + PTR_ERR(buffer)); + return ERR_CAST(buffer); } - return 0; -} - -static int axi_adc_reset(struct adi_axi_adc_state *st) -{ - int ret; - - ret = regmap_write(st->regmap, ADI_AXI_REG_RSTN, 0); - if (ret) - return ret; - - mdelay(10); - ret = regmap_write(st->regmap, ADI_AXI_REG_RSTN, - ADI_AXI_REG_RSTN_MMCM_RSTN); + indio_dev->modes |= INDIO_BUFFER_HARDWARE; + ret = iio_device_attach_buffer(indio_dev, buffer); if (ret) - return ret; + return ERR_PTR(ret); - mdelay(10); - return regmap_write(st->regmap, ADI_AXI_REG_RSTN, - ADI_AXI_REG_RSTN_RSTN | ADI_AXI_REG_RSTN_MMCM_RSTN); + return buffer; } -static void adi_axi_adc_cleanup(void *data) +static void axi_adc_free_buffer(struct iio_backend *back, + struct iio_buffer *buffer) { - struct adi_axi_adc_client *cl = data; - - put_device(cl->dev); - module_put(cl->dev->driver->owner); + iio_dmaengine_buffer_free(buffer); } static const struct regmap_config axi_adc_regmap_config = { @@ -344,45 +158,46 @@ static const struct regmap_config axi_adc_regmap_config = { .max_register = 0x0800, }; +static const struct iio_backend_ops adi_axi_adc_generic = { + .enable = axi_adc_enable, + .disable = axi_adc_disable, + .data_format_set = axi_adc_data_format_set, + .chan_enable = axi_adc_chan_enable, + .chan_disable = axi_adc_chan_disable, + .request_buffer = axi_adc_request_buffer, + .free_buffer = axi_adc_free_buffer, +}; + static int adi_axi_adc_probe(struct platform_device *pdev) { - struct adi_axi_adc_conv *conv; - struct iio_dev *indio_dev; - struct adi_axi_adc_client *cl; struct adi_axi_adc_state *st; void __iomem *base; - unsigned int ver; + unsigned int ver, *expected_ver; int ret; - cl = adi_axi_adc_attach_client(&pdev->dev); - if (IS_ERR(cl)) - return PTR_ERR(cl); - - ret = devm_add_action_or_reset(&pdev->dev, adi_axi_adc_cleanup, cl); - if (ret) - return ret; - - indio_dev = devm_iio_device_alloc(&pdev->dev, sizeof(*st)); - if (indio_dev == NULL) + st = devm_kzalloc(&pdev->dev, sizeof(*st), GFP_KERNEL); + if (!st) return -ENOMEM; - st = iio_priv(indio_dev); - st->client = cl; - cl->state = st; - mutex_init(&st->lock); - base = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(base)) return PTR_ERR(base); + st->dev = &pdev->dev; st->regmap = devm_regmap_init_mmio(&pdev->dev, base, &axi_adc_regmap_config); if (IS_ERR(st->regmap)) return PTR_ERR(st->regmap); - conv = &st->client->conv; + expected_ver = (unsigned int *)device_get_match_data(&pdev->dev); + if (!expected_ver) + return -ENODEV; - ret = axi_adc_reset(st); + /* + * Force disable the core. Up to the frontend to enable us. And we can + * still read/write registers... + */ + ret = regmap_write(st->regmap, ADI_AXI_REG_RSTN, 0); if (ret) return ret; @@ -390,37 +205,23 @@ static int adi_axi_adc_probe(struct platform_device *pdev) if (ret) return ret; - if (cl->info->version > ver) { + if (*expected_ver > ver) { dev_err(&pdev->dev, - "IP core version is too old. Expected %d.%.2d.%c, Reported %d.%.2d.%c\n", - ADI_AXI_PCORE_VER_MAJOR(cl->info->version), - ADI_AXI_PCORE_VER_MINOR(cl->info->version), - ADI_AXI_PCORE_VER_PATCH(cl->info->version), + "IP core version is too old. Expected %d.%.2d.%d, Reported %d.%.2d.%c\n", + ADI_AXI_PCORE_VER_MAJOR(*expected_ver), + ADI_AXI_PCORE_VER_MINOR(*expected_ver), + ADI_AXI_PCORE_VER_PATCH(*expected_ver), ADI_AXI_PCORE_VER_MAJOR(ver), ADI_AXI_PCORE_VER_MINOR(ver), ADI_AXI_PCORE_VER_PATCH(ver)); return -ENODEV; } - indio_dev->info = &adi_axi_adc_info; - indio_dev->name = "adi-axi-adc"; - indio_dev->modes = INDIO_DIRECT_MODE; - indio_dev->num_channels = conv->chip_info->num_channels; - indio_dev->channels = conv->chip_info->channels; - - ret = adi_axi_adc_config_dma_buffer(&pdev->dev, indio_dev); + ret = devm_iio_backend_register(&pdev->dev, &adi_axi_adc_generic, st); if (ret) return ret; - ret = adi_axi_adc_setup_channels(&pdev->dev, st); - if (ret) - return ret; - - ret = devm_iio_device_register(&pdev->dev, indio_dev); - if (ret) - return ret; - - dev_info(&pdev->dev, "AXI ADC IP core (%d.%.2d.%c) probed\n", + dev_info(&pdev->dev, "AXI ADC IP core (%d.%.2d.%d) probed\n", ADI_AXI_PCORE_VER_MAJOR(ver), ADI_AXI_PCORE_VER_MINOR(ver), ADI_AXI_PCORE_VER_PATCH(ver)); @@ -428,6 +229,8 @@ static int adi_axi_adc_probe(struct platform_device *pdev) return 0; } +static unsigned int adi_axi_adc_10_0_a_info = ADI_AXI_PCORE_VER(10, 0, 'a'); + /* Match table for of_platform binding */ static const struct of_device_id adi_axi_adc_of_match[] = { { .compatible = "adi,axi-adc-10.0.a", .data = &adi_axi_adc_10_0_a_info }, @@ -448,3 +251,4 @@ MODULE_AUTHOR("Michael Hennerich "); MODULE_DESCRIPTION("Analog Devices Generic AXI ADC IP core driver"); MODULE_LICENSE("GPL v2"); MODULE_IMPORT_NS(IIO_DMAENGINE_BUFFER); +MODULE_IMPORT_NS(IIO_BACKEND); diff --git a/include/linux/iio/adc/adi-axi-adc.h b/include/linux/iio/adc/adi-axi-adc.h deleted file mode 100644 index b7904992d561..000000000000 --- a/include/linux/iio/adc/adi-axi-adc.h +++ /dev/null @@ -1,68 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -/* - * Analog Devices Generic AXI ADC IP core driver/library - * Link: https://wiki.analog.com/resources/fpga/docs/axi_adc_ip - * - * Copyright 2012-2020 Analog Devices Inc. - */ -#ifndef __ADI_AXI_ADC_H__ -#define __ADI_AXI_ADC_H__ - -struct device; -struct iio_chan_spec; - -/** - * struct adi_axi_adc_chip_info - Chip specific information - * @name Chip name - * @id Chip ID (usually product ID) - * @channels Channel specifications of type @struct iio_chan_spec - * @num_channels Number of @channels - * @scale_table Supported scales by the chip; tuples of 2 ints - * @num_scales Number of scales in the table - * @max_rate Maximum sampling rate supported by the device - */ -struct adi_axi_adc_chip_info { - const char *name; - unsigned int id; - - const struct iio_chan_spec *channels; - unsigned int num_channels; - - const unsigned int (*scale_table)[2]; - int num_scales; - - unsigned long max_rate; -}; - -/** - * struct adi_axi_adc_conv - data of the ADC attached to the AXI ADC - * @chip_info chip info details for the client ADC - * @preenable_setup op to run in the client before enabling the AXI ADC - * @reg_access IIO debugfs_reg_access hook for the client ADC - * @read_raw IIO read_raw hook for the client ADC - * @write_raw IIO write_raw hook for the client ADC - * @read_avail IIO read_avail hook for the client ADC - */ -struct adi_axi_adc_conv { - const struct adi_axi_adc_chip_info *chip_info; - - int (*preenable_setup)(struct adi_axi_adc_conv *conv); - int (*reg_access)(struct adi_axi_adc_conv *conv, unsigned int reg, - unsigned int writeval, unsigned int *readval); - int (*read_raw)(struct adi_axi_adc_conv *conv, - struct iio_chan_spec const *chan, - int *val, int *val2, long mask); - int (*write_raw)(struct adi_axi_adc_conv *conv, - struct iio_chan_spec const *chan, - int val, int val2, long mask); - int (*read_avail)(struct adi_axi_adc_conv *conv, - struct iio_chan_spec const *chan, - const int **val, int *type, int *length, long mask); -}; - -struct adi_axi_adc_conv *devm_adi_axi_adc_conv_register(struct device *dev, - size_t sizeof_priv); - -void *adi_axi_adc_conv_priv(struct adi_axi_adc_conv *conv); - -#endif