[PATCH 06/12] spi: add support to handle cs-gpios

[Marco Felsch]

On 24-11-25, Sascha Hauer wrote:
> On Fri, Nov 15, 2024 at 08:57:41PM +0100, Marco Felsch wrote:
> > At the moment all drivers have to parse the cs-gpios on their own and
> > have to implement the mapping. By this commit we add the support to
> > handle this within the core and if there is a valid CS GPIO for a device
> > we assign it accordingly.
> > 
> 
> ...
> 
> >  	 * likely need more hooks for more protocol options affecting how
> > @@ -156,6 +158,9 @@ static inline void spi_set_ctldata(struct spi_device *spi, void *state)
> >   *	the device whose settings are being modified.
> >   * @transfer: adds a message to the controller's transfer queue.
> >   * @cleanup: frees controller-specific state
> > + * @cs_gpiods: Array of GPIO descriptors to use as chip select lines; one per CS
> > + *	number. Any individual value may be NULL for CS lines that
> > + *	are not GPIOs (driven by the SPI controller itself).
> >   * @list: link with the global spi_controller list
> >   *
> >   * Each SPI controller can communicate with one or more @spi_device
> > @@ -233,6 +238,10 @@ struct spi_controller {
> >  	/* called on release() to free memory provided by spi_controller */
> >  	void			(*cleanup)(struct spi_device *spi);
> >  
> > +	/* GPIO chip select */
> > +	struct gpio_desc	**cs_gpiods;
> > +	bool			use_gpio_descriptors;
> 
> You forgot to copy the documentation for this member.

Sure, I will fix this.

Regards,
  Marco

> 
> Sascha
> 
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