spi: pxa2xx: Extract clear_SSCR1_bits() helper

There are few places that repeat the logic of "clear some bits in SSCR1".
Extract clear_SSCR1_bits() helper to deduplicate that.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20210510124134.24638-12-andriy.shevchenko@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

drivers/spi/spi-pxa2xx-dma.c

@@ -41,9 +41,7 @@ static void pxa2xx_spi_dma_transfer_complete(struct driver_data *drv_data,
 		}
 
 		/* Clear status & disable interrupts */
-		pxa2xx_spi_write(drv_data, SSCR1,
-				 pxa2xx_spi_read(drv_data, SSCR1)
-				 & ~drv_data->dma_cr1);
+		clear_SSCR1_bits(drv_data, drv_data->dma_cr1);
 		write_SSSR_CS(drv_data, drv_data->clear_sr);
 		if (!pxa25x_ssp_comp(drv_data))
 			pxa2xx_spi_write(drv_data, SSTO, 0);

drivers/spi/spi-pxa2xx.c

@@ -733,8 +733,7 @@ static irqreturn_t interrupt_transfer(struct driver_data *drv_data)
 static void handle_bad_msg(struct driver_data *drv_data)
 {
 	pxa2xx_spi_off(drv_data);
-	pxa2xx_spi_write(drv_data, SSCR1,
-			 pxa2xx_spi_read(drv_data, SSCR1) & ~drv_data->int_cr1);
+	clear_SSCR1_bits(drv_data, drv_data->int_cr1);
 	if (!pxa25x_ssp_comp(drv_data))
 		pxa2xx_spi_write(drv_data, SSTO, 0);
 	write_SSSR_CS(drv_data, drv_data->clear_sr);
@@ -1161,9 +1160,7 @@ static void pxa2xx_spi_handle_err(struct spi_controller *controller,
 	pxa2xx_spi_off(drv_data);
 	/* Clear and disable interrupts and service requests */
 	write_SSSR_CS(drv_data, drv_data->clear_sr);
-	pxa2xx_spi_write(drv_data, SSCR1,
-			 pxa2xx_spi_read(drv_data, SSCR1)
-			 & ~(drv_data->int_cr1 | drv_data->dma_cr1));
+	clear_SSCR1_bits(drv_data, drv_data->int_cr1 | drv_data->dma_cr1);
 	if (!pxa25x_ssp_comp(drv_data))
 		pxa2xx_spi_write(drv_data, SSTO, 0);
 

drivers/spi/spi-pxa2xx.h

@@ -105,6 +105,11 @@ static inline int pxa25x_ssp_comp(struct driver_data *drv_data)
 	}
 }
 
+static inline void clear_SSCR1_bits(const struct driver_data *drv_data, u32 bits)
+{
+	pxa2xx_spi_write(drv_data, SSCR1, pxa2xx_spi_read(drv_data, SSCR1) & ~bits);
+}
+
 static inline void write_SSSR_CS(struct driver_data *drv_data, u32 val)
 {
 	if (drv_data->ssp_type == CE4100_SSP ||