Unverified Commit d1a7718e authored by Jaewon Kim's avatar Jaewon Kim Committed by Mark Brown
Browse files

spi: s3c64xx: change polling mode to optional 



Previously, Polling mode was supported as quirk for SOC without DMA.
To provide more flexible support for polling mode, it changed to polling
mode when the 'dmas' property is not present in the devicetree, rather than
using a quirk.

Signed-off-by: default avatarJaewon Kim <jaewon02.kim@samsung.com>
Reviewed-by: default avatarKrzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230502062813.112434-2-jaewon02.kim@samsung.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent ac9a7868

drivers/spi/spi-s3c64xx.c

+2 −2
Original line number Diff line number Diff line
@@ -19,7 +19,6 @@ 
#include <linux/platform_data/spi-s3c64xx.h>



#define MAX_SPI_PORTS		12

#define S3C64XX_SPI_QUIRK_POLL		(1 << 0)

#define S3C64XX_SPI_QUIRK_CS_AUTO	(1 << 1)

#define AUTOSUSPEND_TIMEOUT	2000
@@ -116,7 +115,7 @@ 
#define S3C64XX_SPI_TRAILCNT		S3C64XX_SPI_MAX_TRAILCNT



#define msecs_to_loops(t) (loops_per_jiffy / 1000 * HZ * t)

#define is_polling(x)	(x->port_conf->quirks & S3C64XX_SPI_QUIRK_POLL)

#define is_polling(x)	(x->cntrlr_info->polling)



#define RXBUSY    (1<<2)

#define TXBUSY    (1<<3)
@@ -1068,6 +1067,7 @@ static struct s3c64xx_spi_info *s3c64xx_spi_parse_dt(struct device *dev) 
	}



	sci->no_cs = of_property_read_bool(dev->of_node, "no-cs-readback");

	sci->polling = !of_property_present(dev->of_node, "dmas");



	return sci;

}

include/linux/platform_data/spi-s3c64xx.h

+1 −0
Original line number Diff line number Diff line
@@ -36,6 +36,7 @@ struct s3c64xx_spi_info { 
	int src_clk_nr;

	int num_cs;

	bool no_cs;

	bool polling;

	int (*cfg_gpio)(void);

};