On Fri, Oct 02, 2020 at 01:28:11AM +0300, Serge Semin wrote: > Indeed there is no point in detecting the SPI peripheral device parameters > and initializing the CR0 register fields each time an SPI transfer is > executed. Instead let's define a dedicated CR0 chip-data member, which > will be initialized in accordance with the SPI device settings at the > moment of setting it up. > > By doing so we'll finally make the SPI device chip_data serving as it's > supposed to - to preserve the SPI device specific DW SPI configuration. > See spi-fsl-dspi.c, spi-pl022.c, spi-pxa2xx.c drivers for example of the > way the chip data is utilized.
> +static void dw_spi_update_cr0(struct dw_spi *dws, struct spi_device *spi, > + struct spi_transfer *transfer) Yep, why not to place this in previous patch exactly here? > + /* > + * Update CR0 data each time the setup callback is invoked since > + * the device parameters could have been changed, for instance, by > + * the MMC SPI driver or something else. > + */ > + chip->cr0 = dw_spi_get_cr0(dws, spi); I would rather name it prepare or alike. 'get' assumes getting value or something like that. -- With Best Regards, Andy Shevchenko
