On Wed, Dec 20, 2023 at 03:57:24PM +0100, Fabrice Gasnier wrote:
> Probe the number of capture compare channels, by writing CCER register bits
> and read them back. Take care to restore the register original value.
>
> This is a precursor patch to support capture channels.
>
> Signed-off-by: Fabrice Gasnier <fabrice.gasnier@xxxxxxxxxxx>
> ---
> Changes in v3:
> - New patch split from:
> "counter: stm32-timer-cnt: populate capture channels and check encoder"
> ---
> drivers/counter/stm32-timer-cnt.c | 17 +++++++++++++++++
> 1 file changed, 17 insertions(+)
>
> diff --git a/drivers/counter/stm32-timer-cnt.c b/drivers/counter/stm32-timer-cnt.c
> index 55eb6af34750..b5dc4378fecf 100644
> --- a/drivers/counter/stm32-timer-cnt.c
> +++ b/drivers/counter/stm32-timer-cnt.c
> @@ -43,6 +43,7 @@ struct stm32_timer_cnt {
> struct stm32_timer_regs bak;
> bool has_encoder;
> u32 idx;
> + unsigned int nchannels;
> };
>
> static const enum counter_function stm32_count_functions[] = {
> @@ -417,6 +418,20 @@ static struct counter_count stm32_counts = {
> .num_ext = ARRAY_SIZE(stm32_count_ext)
> };
>
> +static void stm32_timer_cnt_detect_channels(struct platform_device *pdev,
Like stm32_timer_cnt_probe_encoder() in one of the previous patches,
this function uses 'pdev' only to access 'dev'. Pass a reference to
'dev' directly instead.
William Breathitt Gray
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