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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: Jaewon Kim <jaewon02.kim@samsung.com
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org
Link: https://lore.kernel.org/r/20230502062813.112434-2-jaewon02.kim@samsung.com
Signed-off-by: Mark Brown <broonie@kernel.org
This commit is contained in:
Jaewon Kim 2023-05-02 15:28:11 +09:00 committed by Mark Brown
parent ac9a78681b
commit d1a7718ee8
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GPG Key ID: 24D68B725D5487D0
2 changed files with 3 additions and 2 deletions
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4
drivers/spi/spi-s3c64xx.c
View File

@ -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;
}

1
include/linux/platform_data/spi-s3c64xx.h
View File

@ -36,6 +36,7 @@ struct s3c64xx_spi_info {
int src_clk_nr;
int num_cs;
bool no_cs;
bool polling;
int (*cfg_gpio)(void);
};