diff options
Diffstat (limited to 'drivers/staging/greybus/spilib.c')
| -rw-r--r-- | drivers/staging/greybus/spilib.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/drivers/staging/greybus/spilib.c b/drivers/staging/greybus/spilib.c index 527909b..e4c82e0 100644 --- a/drivers/staging/greybus/spilib.c +++ b/drivers/staging/greybus/spilib.c @@ -15,6 +15,7 @@ #include "greybus.h" #include "spilib.h" +#include "gbphy.h" struct gb_spilib { struct gb_connection *connection; @@ -372,6 +373,26 @@ out: return ret; } +#ifndef SPI_CORE_SUPPORT_PM +static int gb_spi_prepare_transfer_hardware(struct spi_master *master) +{ + struct gb_spilib *spi = spi_master_get_devdata(master); + struct gbphy_device *gbphy_dev = to_gbphy_dev(spi->parent); + + return gbphy_runtime_get_sync(gbphy_dev); +} + +static int gb_spi_unprepare_transfer_hardware(struct spi_master *master) +{ + struct gb_spilib *spi = spi_master_get_devdata(master); + struct gbphy_device *gbphy_dev = to_gbphy_dev(spi->parent); + + gbphy_runtime_put_autosuspend(gbphy_dev); + + return 0; +} +#endif + static int gb_spi_setup(struct spi_device *spi) { /* Nothing to do for now */ @@ -497,6 +518,14 @@ int gb_spilib_master_init(struct gb_connection *connection, struct device *dev) master->setup = gb_spi_setup; master->transfer_one_message = gb_spi_transfer_one_message; +#ifndef SPI_CORE_SUPPORT_PM + master->prepare_transfer_hardware = gb_spi_prepare_transfer_hardware; + master->unprepare_transfer_hardware = + gb_spi_unprepare_transfer_hardware; +#else + master->auto_runtime_pm = true; +#endif + ret = spi_register_master(master); if (ret < 0) goto exit_spi_put; |
