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mtd: spi-nor: Rework hwcaps selection for the spi-mem case

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The spi-mem layer provides a spi_mem_supports_op() function to check
whether a specific operation is supported by the controller or not.
This is much more accurate than the hwcaps selection logic based on
SPI_{RX,TX}_ flags.

Rework the hwcaps selection logic to use spi_mem_supports_op() when
nor->spimem != NULL.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
This commit is contained in:
Boris Brezillon 2019-08-06 10:40:41 +05:30 • committed by Tudor Ambarus
parent b35b9a1036
commit c76f508979
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2 changed files with 161 additions and 36 deletions
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14
include/linux/mtd/spi-nor.h
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@ -524,6 +524,20 @@ struct spi_nor_hwcaps {
#define SNOR_HWCAPS_PP_1_8_8 BIT(21)
#define SNOR_HWCAPS_PP_8_8_8 BIT(22)
#define SNOR_HWCAPS_X_X_X (SNOR_HWCAPS_READ_2_2_2 | \
SNOR_HWCAPS_READ_4_4_4 | \
SNOR_HWCAPS_READ_8_8_8 | \
SNOR_HWCAPS_PP_4_4_4 | \
SNOR_HWCAPS_PP_8_8_8)
#define SNOR_HWCAPS_DTR (SNOR_HWCAPS_READ_1_1_1_DTR | \
SNOR_HWCAPS_READ_1_2_2_DTR | \
SNOR_HWCAPS_READ_1_4_4_DTR | \
SNOR_HWCAPS_READ_1_8_8_DTR)
#define SNOR_HWCAPS_ALL (SNOR_HWCAPS_READ_MASK | \
SNOR_HWCAPS_PP_MASK)
/**
* spi_nor_scan() - scan the SPI NOR
* @nor: the spi_nor structure