Re: [PATCH v3 14/24] iio: accel: kxcjk-1013: Get rid of enum kx_chipset

[Jonathan Cameron <jic23@kernel.org>]

On Thu, 24 Oct 2024 22:05:03 +0300
Andy Shevchenko <andriy.shevchenko@linux.intel.com> wrote:

> Instead of using enum, out of which only a couple of values
> are being actully used, make a comparisons against pointer
> to the respective chip_info structures.
> 
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Hmm. Maybe worth a revisit longer term to use callbacks for the
decisions instead of matching at all as this stuff tends not to end
up being specific to one version of a chip as more parts are added.

Anyhow, this is still an improvement so applied.

Jonathan

> ---
>  drivers/iio/accel/kxcjk-1013.c | 28 +++++-----------------------
>  1 file changed, 5 insertions(+), 23 deletions(-)
> 
> diff --git a/drivers/iio/accel/kxcjk-1013.c b/drivers/iio/accel/kxcjk-1013.c
> index 91f890275a18..a8c73e401f95 100644
> --- a/drivers/iio/accel/kxcjk-1013.c
> +++ b/drivers/iio/accel/kxcjk-1013.c
> @@ -169,15 +169,6 @@
>  
>  #define KXCJK1013_DEFAULT_WAKE_THRES	1
>  
> -enum kx_chipset {
> -	KXCJK1013,
> -	KXCJ91008,
> -	KXTJ21009,
> -	KXTF9,
> -	KX0231025,
> -	KX_MAX_CHIPS /* this must be last */
> -};
> -
>  /* Refer to section 4 of the specification */
>  struct kx_odr_start_up_time {
>  	int odr_bits;
> @@ -318,59 +309,50 @@ static const struct kx_chipset_regs kx0231025_regs = {
>  struct kx_chipset_info {
>  	const struct kx_chipset_regs *regs;
>  	const struct kx_odr_start_up_time *times;
> -	enum kx_chipset chipset;
>  	enum kx_acpi_type acpi_type;
>  };
>  
>  static const struct kx_chipset_info kxcjk1013_info = {
>  	.regs = &kxcjk1013_regs,
>  	.times = pm_ptr(kxcjk1013_odr_start_up_times),
> -	.chipset = KXCJK1013,
>  };
>  
>  static const struct kx_chipset_info kxcj91008_info = {
>  	.regs = &kxcjk1013_regs,
>  	.times = pm_ptr(kxcj91008_odr_start_up_times),
> -	.chipset = KXCJ91008,
>  };
>  
>  static const struct kx_chipset_info kxcj91008_kiox010a_info = {
>  	.regs = &kxcjk1013_regs,
>  	.times = pm_ptr(kxcj91008_odr_start_up_times),
> -	.chipset = KXCJ91008,
>  	.acpi_type = ACPI_KIOX010A,
>  };
>  
>  static const struct kx_chipset_info kxcj91008_kiox020a_info = {
>  	.regs = &kxcjk1013_regs,
>  	.times = pm_ptr(kxcj91008_odr_start_up_times),
> -	.chipset = KXCJ91008,
>  	.acpi_type = ACPI_GENERIC,
>  };
>  
>  static const struct kx_chipset_info kxcj91008_smo8500_info = {
>  	.regs = &kxcjk1013_regs,
>  	.times = pm_ptr(kxcj91008_odr_start_up_times),
> -	.chipset = KXCJ91008,
>  	.acpi_type = ACPI_SMO8500,
>  };
>  
>  static const struct kx_chipset_info kxtj21009_info = {
>  	.regs = &kxcjk1013_regs,
>  	.times = pm_ptr(kxtj21009_odr_start_up_times),
> -	.chipset = KXTJ21009,
>  };
>  
>  static const struct kx_chipset_info kxtf9_info = {
>  	.regs = &kxtf9_regs,
>  	.times = pm_ptr(kxtf9_odr_start_up_times),
> -	.chipset = KXTF9,
>  };
>  
>  static const struct kx_chipset_info kx0231025_info = {
>  	.regs = &kx0231025_regs,
>  	.times = pm_ptr(kx0231025_odr_start_up_times),
> -	.chipset = KX0231025,
>  };
>  
>  enum kxcjk1013_axis {
> @@ -647,7 +629,7 @@ static int kxcjk1013_chip_init(struct kxcjk1013_data *data)
>  	}
>  
>  	/* On KX023, route all used interrupts to INT1 for now */
> -	if (data->info->chipset == KX0231025 && data->client->irq > 0) {
> +	if (data->info == &kx0231025_info && data->client->irq > 0) {
>  		ret = i2c_smbus_write_byte_data(data->client, KX023_REG_INC4,
>  						KX023_REG_INC4_DRDY1 |
>  						KX023_REG_INC4_WUFI1);
> @@ -883,7 +865,7 @@ static int kxcjk1013_set_odr(struct kxcjk1013_data *data, int val, int val2)
>  	if (ret < 0)
>  		return ret;
>  
> -	if (data->info->chipset == KXTF9)
> +	if (data->info == &kxtf9_info)
>  		odr_setting = kxcjk1013_find_odr_value(kxtf9_samp_freq_table,
>  						       ARRAY_SIZE(kxtf9_samp_freq_table),
>  						       val, val2);
> @@ -927,7 +909,7 @@ static int kxcjk1013_set_odr(struct kxcjk1013_data *data, int val, int val2)
>  
>  static int kxcjk1013_get_odr(struct kxcjk1013_data *data, int *val, int *val2)
>  {
> -	if (data->info->chipset == KXTF9)
> +	if (data->info == &kxtf9_info)
>  		return kxcjk1013_convert_odr_value(kxtf9_samp_freq_table,
>  						   ARRAY_SIZE(kxtf9_samp_freq_table),
>  						   data->odr_bits, val, val2);
> @@ -1194,7 +1176,7 @@ static ssize_t kxcjk1013_get_samp_freq_avail(struct device *dev,
>  	struct kxcjk1013_data *data = iio_priv(indio_dev);
>  	const char *str;
>  
> -	if (data->info->chipset == KXTF9)
> +	if (data->info == &kxtf9_info)
>  		str = kxtf9_samp_freq_avail;
>  	else
>  		str = kxcjk1013_samp_freq_avail;
> @@ -1443,7 +1425,7 @@ static irqreturn_t kxcjk1013_event_handler(int irq, void *private)
>  	}
>  
>  	if (ret & KXCJK1013_REG_INT_SRC1_BIT_WUFS) {
> -		if (data->info->chipset == KXTF9)
> +		if (data->info == &kxtf9_info)
>  			iio_push_event(indio_dev,
>  				       IIO_MOD_EVENT_CODE(IIO_ACCEL,
>  				       0,