Re: [PATCH 5/9] spi: spi-sun6i: sun6i_spi_drain_fifo(): introduce sun6i_spi_get_rx_fifo_count() and make use of it

[Marc Kleine-Budde <mkl@pengutronix.de>]

On 7/6/20 2:36 PM, Maxime Ripard wrote:
> On Mon, Jul 06, 2020 at 09:17:57AM +0200, Marc Kleine-Budde wrote:
>> This patch introduces the function sun6i_spi_get_rx_fifo_count(), similar to
>> the existing sun6i_spi_get_tx_fifo_count(), to make the sun6i_spi_drain_fifo()
>> function a bit easier to read.
>>
>> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
>> ---
>>  drivers/spi/spi-sun6i.c | 15 +++++++++++----
>>  1 file changed, 11 insertions(+), 4 deletions(-)
>>
>> diff --git a/drivers/spi/spi-sun6i.c b/drivers/spi/spi-sun6i.c
>> index 882492774986..f70d14229483 100644
>> --- a/drivers/spi/spi-sun6i.c
>> +++ b/drivers/spi/spi-sun6i.c
>> @@ -106,6 +106,15 @@ static inline void sun6i_spi_write(struct sun6i_spi *sspi, u32 reg, u32 value)
>>  	writel(value, sspi->base_addr + reg);
>>  }
>>  
>> +static inline u32 sun6i_spi_get_rx_fifo_count(struct sun6i_spi *sspi)
>> +{
>> +	u32 reg = sun6i_spi_read(sspi, SUN6I_FIFO_STA_REG);
>> +
>> +	reg >>= SUN6I_FIFO_STA_RF_CNT_BITS;
>> +
>> +	return reg & SUN6I_FIFO_STA_RF_CNT_MASK;
>> +}
>> +
> 
> I guess we could just use FIELD_GET here?
> 
> Looks good otherwise, thanks!

Will change in v2.

Marc

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