iio: adc: ad7606: Add compatibility to fw_nodes

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.

Doing so required to declare ad7606_chip_info structures in the .h file
so to make them 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@baylibre.com>
Link: https://patch.msgid.link/20241015-ad7606_add_iio_backend_support-v5-5-654faf1ae08c@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Guillaume Stols 2024-10-15 13:56:18 +00:00 committed by Jonathan Cameron
parent 29121b825e
commit bc69e9fffd
4 changed files with 254 additions and 187 deletions

View File

@ -78,6 +78,155 @@ 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_16bit[] = {
IIO_CHAN_SOFT_TIMESTAMP(8),
AD7606_CHANNEL(0, 16),
AD7606_CHANNEL(1, 16),
AD7606_CHANNEL(2, 16),
AD7606_CHANNEL(3, 16),
AD7606_CHANNEL(4, 16),
AD7606_CHANNEL(5, 16),
AD7606_CHANNEL(6, 16),
AD7606_CHANNEL(7, 16),
};
static const struct iio_chan_spec ad7606_channels_18bit[] = {
IIO_CHAN_SOFT_TIMESTAMP(8),
AD7606_CHANNEL(0, 18),
AD7606_CHANNEL(1, 18),
AD7606_CHANNEL(2, 18),
AD7606_CHANNEL(3, 18),
AD7606_CHANNEL(4, 18),
AD7606_CHANNEL(5, 18),
AD7606_CHANNEL(6, 18),
AD7606_CHANNEL(7, 18),
};
/*
* 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, 16),
AD7606_CHANNEL(1, 16),
AD7606_CHANNEL(2, 16),
AD7606_CHANNEL(3, 16),
AD7606_CHANNEL(4, 16),
AD7606_CHANNEL(5, 16),
AD7606_CHANNEL(6, 16),
AD7606_CHANNEL(7, 16),
AD7606_CHANNEL(8, 16),
AD7606_CHANNEL(9, 16),
AD7606_CHANNEL(10, 16),
AD7606_CHANNEL(11, 16),
AD7606_CHANNEL(12, 16),
AD7606_CHANNEL(13, 16),
AD7606_CHANNEL(14, 16),
AD7606_CHANNEL(15, 16),
};
static int ad7606c_18bit_chan_scale_setup(struct ad7606_state *st,
struct iio_chan_spec *chan, int ch);
static int ad7606c_16bit_chan_scale_setup(struct ad7606_state *st,
struct iio_chan_spec *chan, int ch);
static int ad7606_16bit_chan_scale_setup(struct ad7606_state *st,
struct iio_chan_spec *chan, int ch);
const struct ad7606_chip_info ad7605_4_info = {
.channels = ad7605_channels,
.name = "ad7605-4",
.num_channels = 5,
.scale_setup_cb = ad7606_16bit_chan_scale_setup,
};
EXPORT_SYMBOL_NS_GPL(ad7605_4_info, IIO_AD7606);
const struct ad7606_chip_info ad7606_8_info = {
.channels = ad7606_channels_16bit,
.name = "ad7606-8",
.num_channels = 9,
.oversampling_avail = ad7606_oversampling_avail,
.oversampling_num = ARRAY_SIZE(ad7606_oversampling_avail),
.scale_setup_cb = ad7606_16bit_chan_scale_setup,
};
EXPORT_SYMBOL_NS_GPL(ad7606_8_info, IIO_AD7606);
const struct ad7606_chip_info ad7606_6_info = {
.channels = ad7606_channels_16bit,
.name = "ad7606-6",
.num_channels = 7,
.oversampling_avail = ad7606_oversampling_avail,
.oversampling_num = ARRAY_SIZE(ad7606_oversampling_avail),
.scale_setup_cb = ad7606_16bit_chan_scale_setup,
};
EXPORT_SYMBOL_NS_GPL(ad7606_6_info, IIO_AD7606);
const struct ad7606_chip_info ad7606_4_info = {
.channels = ad7606_channels_16bit,
.name = "ad7606-4",
.num_channels = 5,
.oversampling_avail = ad7606_oversampling_avail,
.oversampling_num = ARRAY_SIZE(ad7606_oversampling_avail),
.scale_setup_cb = ad7606_16bit_chan_scale_setup,
};
EXPORT_SYMBOL_NS_GPL(ad7606_4_info, IIO_AD7606);
const struct ad7606_chip_info ad7606b_info = {
.channels = ad7606_channels_16bit,
.name = "ad7606b",
.num_channels = 9,
.oversampling_avail = ad7606_oversampling_avail,
.oversampling_num = ARRAY_SIZE(ad7606_oversampling_avail),
.scale_setup_cb = ad7606_16bit_chan_scale_setup,
};
EXPORT_SYMBOL_NS_GPL(ad7606b_info, IIO_AD7606);
const struct ad7606_chip_info ad7606c_16_info = {
.channels = ad7606_channels_16bit,
.name = "ad7606c16",
.num_channels = 9,
.oversampling_avail = ad7606_oversampling_avail,
.oversampling_num = ARRAY_SIZE(ad7606_oversampling_avail),
.scale_setup_cb = ad7606c_16bit_chan_scale_setup,
};
EXPORT_SYMBOL_NS_GPL(ad7606c_16_info, IIO_AD7606);
const struct ad7606_chip_info ad7606c_18_info = {
.channels = ad7606_channels_18bit,
.name = "ad7606c18",
.num_channels = 9,
.oversampling_avail = ad7606_oversampling_avail,
.oversampling_num = ARRAY_SIZE(ad7606_oversampling_avail),
.scale_setup_cb = ad7606c_18bit_chan_scale_setup,
};
EXPORT_SYMBOL_NS_GPL(ad7606c_18_info, IIO_AD7606);
const struct ad7606_chip_info ad7616_info = {
.channels = ad7616_channels,
.init_delay_ms = 15,
.name = "ad7616",
.num_channels = 17,
.oversampling_avail = ad7616_oversampling_avail,
.oversampling_num = ARRAY_SIZE(ad7616_oversampling_avail),
.os_req_reset = true,
.scale_setup_cb = ad7606_16bit_chan_scale_setup,
};
EXPORT_SYMBOL_NS_GPL(ad7616_info, IIO_AD7606);
int ad7606_reset(struct ad7606_state *st)
{
if (st->gpio_reset) {
@ -622,128 +771,6 @@ 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_16bit[] = {
IIO_CHAN_SOFT_TIMESTAMP(8),
AD7606_CHANNEL(0, 16),
AD7606_CHANNEL(1, 16),
AD7606_CHANNEL(2, 16),
AD7606_CHANNEL(3, 16),
AD7606_CHANNEL(4, 16),
AD7606_CHANNEL(5, 16),
AD7606_CHANNEL(6, 16),
AD7606_CHANNEL(7, 16),
};
static const struct iio_chan_spec ad7606_channels_18bit[] = {
IIO_CHAN_SOFT_TIMESTAMP(8),
AD7606_CHANNEL(0, 18),
AD7606_CHANNEL(1, 18),
AD7606_CHANNEL(2, 18),
AD7606_CHANNEL(3, 18),
AD7606_CHANNEL(4, 18),
AD7606_CHANNEL(5, 18),
AD7606_CHANNEL(6, 18),
AD7606_CHANNEL(7, 18),
};
/*
* 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, 16),
AD7606_CHANNEL(1, 16),
AD7606_CHANNEL(2, 16),
AD7606_CHANNEL(3, 16),
AD7606_CHANNEL(4, 16),
AD7606_CHANNEL(5, 16),
AD7606_CHANNEL(6, 16),
AD7606_CHANNEL(7, 16),
AD7606_CHANNEL(8, 16),
AD7606_CHANNEL(9, 16),
AD7606_CHANNEL(10, 16),
AD7606_CHANNEL(11, 16),
AD7606_CHANNEL(12, 16),
AD7606_CHANNEL(13, 16),
AD7606_CHANNEL(14, 16),
AD7606_CHANNEL(15, 16),
};
static const struct ad7606_chip_info ad7606_chip_info_tbl[] = {
/* More devices added in future */
[ID_AD7605_4] = {
.channels = ad7605_channels,
.num_channels = 5,
.scale_setup_cb = ad7606_16bit_chan_scale_setup,
},
[ID_AD7606_8] = {
.channels = ad7606_channels_16bit,
.num_channels = 9,
.scale_setup_cb = ad7606_16bit_chan_scale_setup,
.oversampling_avail = ad7606_oversampling_avail,
.oversampling_num = ARRAY_SIZE(ad7606_oversampling_avail),
},
[ID_AD7606_6] = {
.channels = ad7606_channels_16bit,
.num_channels = 7,
.scale_setup_cb = ad7606_16bit_chan_scale_setup,
.oversampling_avail = ad7606_oversampling_avail,
.oversampling_num = ARRAY_SIZE(ad7606_oversampling_avail),
},
[ID_AD7606_4] = {
.channels = ad7606_channels_16bit,
.num_channels = 5,
.scale_setup_cb = ad7606_16bit_chan_scale_setup,
.oversampling_avail = ad7606_oversampling_avail,
.oversampling_num = ARRAY_SIZE(ad7606_oversampling_avail),
},
[ID_AD7606B] = {
.channels = ad7606_channels_16bit,
.num_channels = 9,
.scale_setup_cb = ad7606_16bit_chan_scale_setup,
.oversampling_avail = ad7606_oversampling_avail,
.oversampling_num = ARRAY_SIZE(ad7606_oversampling_avail),
},
[ID_AD7606C_16] = {
.channels = ad7606_channels_16bit,
.num_channels = 9,
.scale_setup_cb = ad7606c_16bit_chan_scale_setup,
.oversampling_avail = ad7606_oversampling_avail,
.oversampling_num = ARRAY_SIZE(ad7606_oversampling_avail),
},
[ID_AD7606C_18] = {
.channels = ad7606_channels_18bit,
.num_channels = 9,
.scale_setup_cb = ad7606c_18bit_chan_scale_setup,
.oversampling_avail = ad7606_oversampling_avail,
.oversampling_num = ARRAY_SIZE(ad7606_oversampling_avail),
},
[ID_AD7616] = {
.channels = ad7616_channels,
.num_channels = 17,
.scale_setup_cb = ad7606_16bit_chan_scale_setup,
.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;
@ -922,7 +949,7 @@ static const struct iio_trigger_ops ad7606_trigger_ops = {
.validate_device = iio_trigger_validate_own_device,
};
static int ad7606_sw_mode_setup(struct iio_dev *indio_dev, unsigned int id)
static int ad7606_sw_mode_setup(struct iio_dev *indio_dev)
{
struct ad7606_state *st = iio_priv(indio_dev);
@ -983,7 +1010,7 @@ 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;
@ -1008,7 +1035,7 @@ 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;
@ -1031,7 +1058,7 @@ 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;
@ -1050,7 +1077,7 @@ int ad7606_probe(struct device *dev, int irq, void __iomem *base_address,
st->write_scale = ad7606_write_scale_hw;
st->write_os = ad7606_write_os_hw;
ret = ad7606_sw_mode_setup(indio_dev, id);
ret = ad7606_sw_mode_setup(indio_dev);
if (ret)
return ret;
@ -1101,7 +1128,7 @@ 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;

View File

@ -69,6 +69,7 @@ typedef int (*ad7606_scale_setup_cb_t)(struct ad7606_state *st,
/**
* struct ad7606_chip_info - chip specific information
* @channels: channel specification
* @name device name
* @num_channels: number of channels
* @scale_setup_cb: callback to setup the scales for each channel
* @oversampling_avail pointer to the array which stores the available
@ -80,6 +81,7 @@ typedef int (*ad7606_scale_setup_cb_t)(struct ad7606_state *st,
*/
struct ad7606_chip_info {
const struct iio_chan_spec *channels;
const char *name;
unsigned int num_channels;
ad7606_scale_setup_cb_t scale_setup_cb;
const unsigned int *oversampling_avail;
@ -199,22 +201,30 @@ struct ad7606_bus_ops {
u16 (*rd_wr_cmd)(int addr, char isWriteOp);
};
/**
* struct ad7606_bus_info - agregate ad7606_chip_info and ad7606_bus_ops
* @chip_info entry in the table of chips that describes this device
* @bops bus operations (SPI or parallel)
*/
struct ad7606_bus_info {
const struct ad7606_chip_info *chip_info;
const struct ad7606_bus_ops *bops;
};
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_AD7606C_16,
ID_AD7606C_18,
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 ad7606c_16_info;
extern const struct ad7606_chip_info ad7606c_18_info;
extern const struct ad7606_chip_info ad7616_info;
#ifdef CONFIG_PM_SLEEP
extern const struct dev_pm_ops ad7606_pm_ops;

View File

@ -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;
@ -105,26 +114,25 @@ 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,
return ad7606_probe(&pdev->dev, irq, addr, 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);

View File

@ -334,7 +334,7 @@ static const struct ad7606_bus_ops ad7616_spi_bops = {
.sw_mode_config = ad7616_sw_mode_config,
};
static const struct ad7606_bus_ops ad7606B_spi_bops = {
static const struct ad7606_bus_ops ad7606b_spi_bops = {
.read_block = ad7606_spi_read_block,
.reg_read = ad7606_spi_reg_read,
.reg_write = ad7606_spi_reg_write,
@ -352,54 +352,76 @@ static const struct ad7606_bus_ops ad7606c_18_spi_bops = {
.sw_mode_config = ad7606c_18_sw_mode_config,
};
static const struct ad7606_bus_info ad7605_4_bus_info = {
.chip_info = &ad7605_4_info,
.bops = &ad7606_spi_bops,
};
static const struct ad7606_bus_info ad7606_8_bus_info = {
.chip_info = &ad7606_8_info,
.bops = &ad7606_spi_bops,
};
static const struct ad7606_bus_info ad7606_6_bus_info = {
.chip_info = &ad7606_6_info,
.bops = &ad7606_spi_bops,
};
static const struct ad7606_bus_info ad7606_4_bus_info = {
.chip_info = &ad7606_4_info,
.bops = &ad7606_spi_bops,
};
static const struct ad7606_bus_info ad7606b_bus_info = {
.chip_info = &ad7606b_info,
.bops = &ad7606b_spi_bops,
};
static const struct ad7606_bus_info ad7606c_16_bus_info = {
.chip_info = &ad7606c_16_info,
.bops = &ad7606b_spi_bops,
};
static const struct ad7606_bus_info ad7606c_18_bus_info = {
.chip_info = &ad7606c_18_info,
.bops = &ad7606c_18_spi_bops,
};
static const struct ad7606_bus_info ad7616_bus_info = {
.chip_info = &ad7616_info,
.bops = &ad7616_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_bus_ops *bops;
switch (id->driver_data) {
case ID_AD7616:
bops = &ad7616_spi_bops;
break;
case ID_AD7606B:
case ID_AD7606C_16:
bops = &ad7606B_spi_bops;
break;
case ID_AD7606C_18:
bops = &ad7606c_18_spi_bops;
break;
default:
bops = &ad7606_spi_bops;
break;
}
const struct ad7606_bus_info *bus_info = spi_get_device_match_data(spi);
return ad7606_probe(&spi->dev, spi->irq, NULL,
id->name, id->driver_data,
bops);
bus_info->chip_info, bus_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 },
{ "ad7606c-16", ID_AD7606C_16 },
{ "ad7606c-18", ID_AD7606C_18 },
{ "ad7616", ID_AD7616 },
{ "ad7605-4", (kernel_ulong_t)&ad7605_4_bus_info },
{ "ad7606-4", (kernel_ulong_t)&ad7606_4_bus_info },
{ "ad7606-6", (kernel_ulong_t)&ad7606_6_bus_info },
{ "ad7606-8", (kernel_ulong_t)&ad7606_8_bus_info },
{ "ad7606b", (kernel_ulong_t)&ad7606b_bus_info },
{ "ad7606c-16", (kernel_ulong_t)&ad7606c_16_bus_info },
{ "ad7606c-18", (kernel_ulong_t)&ad7606c_18_bus_info },
{ "ad7616", (kernel_ulong_t)&ad7616_bus_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,ad7606c-16" },
{ .compatible = "adi,ad7606c-18" },
{ .compatible = "adi,ad7616" },
{ .compatible = "adi,ad7605-4", .data = &ad7605_4_bus_info },
{ .compatible = "adi,ad7606-4", .data = &ad7606_4_bus_info },
{ .compatible = "adi,ad7606-6", .data = &ad7606_6_bus_info },
{ .compatible = "adi,ad7606-8", .data = &ad7606_8_bus_info },
{ .compatible = "adi,ad7606b", .data = &ad7606b_bus_info },
{ .compatible = "adi,ad7606c-16", .data = &ad7606c_16_bus_info },
{ .compatible = "adi,ad7606c-18", .data = &ad7606c_18_bus_info },
{ .compatible = "adi,ad7616", .data = &ad7616_bus_info },
{ }
};
MODULE_DEVICE_TABLE(of, ad7606_of_match);