From 7fe5b83fbcefb100c4fcec034a4a55507cd493e2 Mon Sep 17 00:00:00 2001 From: Matti Vaittinen Date: Mon, 18 Aug 2025 11:12:39 +0300 Subject: [PATCH] iio: adc: adc128s052: Simplify matching chip_data The adc128s052 driver supports a few different ICs. IC specific configuration data is stored in an array. IC data, residing in a specific point of the array, is pointed from the SPI device match data. There is no need to have the chip config data structures in an array and splitting them out of an array has at least following benefits: - Chip-specific structures can be named after the chips they support. This makes referring them a tad cleaner, compared to using a generic array name with a numerical index. - Avoid all potential 'out of bounds' errors which can result if the array is changed. Split the chip configuration data array to individual structures. Signed-off-by: Matti Vaittinen Reviewed-by: David Lechner Link: https://patch.msgid.link/943b6f4852ff0944eeaa0366cbe3b5aaf440cf23.1755504346.git.mazziesaccount@gmail.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ti-adc128s052.c | 78 +++++++++++++++++---------------- 1 file changed, 41 insertions(+), 37 deletions(-) diff --git a/drivers/iio/adc/ti-adc128s052.c b/drivers/iio/adc/ti-adc128s052.c index 1b46a8155803c..81153253529e7 100644 --- a/drivers/iio/adc/ti-adc128s052.c +++ b/drivers/iio/adc/ti-adc128s052.c @@ -124,26 +124,30 @@ static const struct iio_chan_spec adc124s021_channels[] = { static const char * const bd79104_regulators[] = { "iovdd" }; -static const struct adc128_configuration adc128_config[] = { - { - .channels = adc128s052_channels, - .num_channels = ARRAY_SIZE(adc128s052_channels), - .refname = "vref", - }, { - .channels = adc122s021_channels, - .num_channels = ARRAY_SIZE(adc122s021_channels), - .refname = "vref", - }, { - .channels = adc124s021_channels, - .num_channels = ARRAY_SIZE(adc124s021_channels), - .refname = "vref", - }, { - .channels = adc128s052_channels, - .num_channels = ARRAY_SIZE(adc128s052_channels), - .refname = "vdd", - .other_regulators = &bd79104_regulators, - .num_other_regulators = 1, - }, +static const struct adc128_configuration adc122s_config = { + .channels = adc122s021_channels, + .num_channels = ARRAY_SIZE(adc122s021_channels), + .refname = "vref", +}; + +static const struct adc128_configuration adc124s_config = { + .channels = adc124s021_channels, + .num_channels = ARRAY_SIZE(adc124s021_channels), + .refname = "vref", +}; + +static const struct adc128_configuration adc128s_config = { + .channels = adc128s052_channels, + .num_channels = ARRAY_SIZE(adc128s052_channels), + .refname = "vref", +}; + +static const struct adc128_configuration bd79104_config = { + .channels = adc128s052_channels, + .num_channels = ARRAY_SIZE(adc128s052_channels), + .refname = "vdd", + .other_regulators = &bd79104_regulators, + .num_other_regulators = 1, }; static const struct iio_info adc128_info = { @@ -199,33 +203,33 @@ static int adc128_probe(struct spi_device *spi) } static const struct of_device_id adc128_of_match[] = { - { .compatible = "ti,adc128s052", .data = &adc128_config[0] }, - { .compatible = "ti,adc122s021", .data = &adc128_config[1] }, - { .compatible = "ti,adc122s051", .data = &adc128_config[1] }, - { .compatible = "ti,adc122s101", .data = &adc128_config[1] }, - { .compatible = "ti,adc124s021", .data = &adc128_config[2] }, - { .compatible = "ti,adc124s051", .data = &adc128_config[2] }, - { .compatible = "ti,adc124s101", .data = &adc128_config[2] }, - { .compatible = "rohm,bd79104", .data = &adc128_config[3] }, + { .compatible = "ti,adc128s052", .data = &adc128s_config }, + { .compatible = "ti,adc122s021", .data = &adc122s_config }, + { .compatible = "ti,adc122s051", .data = &adc122s_config }, + { .compatible = "ti,adc122s101", .data = &adc122s_config }, + { .compatible = "ti,adc124s021", .data = &adc124s_config }, + { .compatible = "ti,adc124s051", .data = &adc124s_config }, + { .compatible = "ti,adc124s101", .data = &adc124s_config }, + { .compatible = "rohm,bd79104", .data = &bd79104_config }, { } }; MODULE_DEVICE_TABLE(of, adc128_of_match); static const struct spi_device_id adc128_id[] = { - { "adc128s052", (kernel_ulong_t)&adc128_config[0] }, - { "adc122s021", (kernel_ulong_t)&adc128_config[1] }, - { "adc122s051", (kernel_ulong_t)&adc128_config[1] }, - { "adc122s101", (kernel_ulong_t)&adc128_config[1] }, - { "adc124s021", (kernel_ulong_t)&adc128_config[2] }, - { "adc124s051", (kernel_ulong_t)&adc128_config[2] }, - { "adc124s101", (kernel_ulong_t)&adc128_config[2] }, - { "bd79104", (kernel_ulong_t)&adc128_config[3] }, + { "adc128s052", (kernel_ulong_t)&adc128s_config }, + { "adc122s021", (kernel_ulong_t)&adc122s_config }, + { "adc122s051", (kernel_ulong_t)&adc122s_config }, + { "adc122s101", (kernel_ulong_t)&adc122s_config }, + { "adc124s021", (kernel_ulong_t)&adc124s_config }, + { "adc124s051", (kernel_ulong_t)&adc124s_config }, + { "adc124s101", (kernel_ulong_t)&adc124s_config }, + { "bd79104", (kernel_ulong_t)&bd79104_config }, { } }; MODULE_DEVICE_TABLE(spi, adc128_id); static const struct acpi_device_id adc128_acpi_match[] = { - { "AANT1280", (kernel_ulong_t)&adc128_config[2] }, + { "AANT1280", (kernel_ulong_t)&adc124s_config }, { } }; MODULE_DEVICE_TABLE(acpi, adc128_acpi_match); -- 2.47.3