[PATCH v2 07/10] iio: adc: ad7606: Add compatibility to fw_nodes

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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 <gstols@xxxxxxxxxxxx>
---
 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 <linux/mod_devicetable.h>
 #include <linux/module.h>
 #include <linux/platform_device.h>
+#include <linux/property.h>
 #include <linux/types.h>
 
 #include <linux/iio/iio.h>
@@ -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);

-- 
2.34.1





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