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| author | James Bottomley <James.Bottomley@HansenPartnership.com> | 2016-07-06 17:25:55 +0300 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@HansenPartnership.com> | 2016-07-06 17:25:55 +0300 |
| commit | ea1a25c3348abc33d7d94db28501766adf3d1c7d (patch) | |
| tree | ca3c5c8b72532117034dd2d57a2a85eead13db7b /include/linux/spi/spi.h | |
| parent | 5e7ff2ca7f2da55fe777167849d0c93403bd0dc8 (diff) | |
| parent | 262e2bfd7d1e1f1ee48b870e5dfabb87c06b975e (diff) | |
| download | linux-ea1a25c3348abc33d7d94db28501766adf3d1c7d.tar.xz | |
Merge branch 'jejb-fixes' into fixes
Diffstat (limited to 'include/linux/spi/spi.h')
| -rw-r--r-- | include/linux/spi/spi.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h index 857a9a1d82b5..1f03483f61e5 100644 --- a/include/linux/spi/spi.h +++ b/include/linux/spi/spi.h @@ -372,6 +372,7 @@ static inline void spi_unregister_driver(struct spi_driver *sdrv) * @unprepare_message: undo any work done by prepare_message(). * @spi_flash_read: to support spi-controller hardwares that provide * accelerated interface to read from flash devices. + * @flash_read_supported: spi device supports flash read * @cs_gpios: Array of GPIOs to use as chip select lines; one per CS * number. Any individual value may be -ENOENT for CS lines that * are not GPIOs (driven by the SPI controller itself). @@ -529,6 +530,7 @@ struct spi_master { struct spi_message *message); int (*spi_flash_read)(struct spi_device *spi, struct spi_flash_read_message *msg); + bool (*flash_read_supported)(struct spi_device *spi); /* * These hooks are for drivers that use a generic implementation @@ -1158,7 +1160,9 @@ struct spi_flash_read_message { /* SPI core interface for flash read support */ static inline bool spi_flash_read_supported(struct spi_device *spi) { - return spi->master->spi_flash_read ? true : false; + return spi->master->spi_flash_read && + (!spi->master->flash_read_supported || + spi->master->flash_read_supported(spi)); } int spi_flash_read(struct spi_device *spi, |