diff options
Diffstat (limited to 'include/spi.h')
| -rw-r--r-- | include/spi.h | 41 |
1 files changed, 25 insertions, 16 deletions
diff --git a/include/spi.h b/include/spi.h index 2d34e4af11..dc3b21132a 100644 --- a/include/spi.h +++ b/include/spi.h @@ -39,17 +39,30 @@ #define SPI_DEFAULT_WORDLEN 8 -/* TODO(sjg@chromium.org): Remove this and use max_hz from struct spi_slave */ +/** + * struct dm_spi_bus - SPI bus info + * + * This contains information about a SPI bus. To obtain this structure, use + * dev_get_uclass_priv(bus) where bus is the SPI bus udevice. + * + * @max_hz: Maximum speed that the bus can tolerate. + * @speed: Current bus speed. This is 0 until the bus is first claimed. + * @mode: Current bus mode. This is 0 until the bus is first claimed. + * + * TODO(sjg@chromium.org): Remove this and use max_hz from struct spi_slave. + */ struct dm_spi_bus { uint max_hz; + uint speed; + uint mode; }; /** - * struct dm_spi_platdata - platform data for all SPI slaves + * struct dm_spi_plat - platform data for all SPI slaves * * This describes a SPI slave, a child device of the SPI bus. To obtain this - * struct from a spi_slave, use dev_get_parent_platdata(dev) or - * dev_get_parent_platdata(slave->dev). + * struct from a spi_slave, use dev_get_parent_plat(dev) or + * dev_get_parent_plat(slave->dev). * * This data is immutable. Each time the device is probed, @max_hz and @mode * will be copied to struct spi_slave. @@ -58,7 +71,7 @@ struct dm_spi_bus { * @max_hz: Maximum bus speed that this slave can tolerate * @mode: SPI mode to use for this device (see SPI mode flags) */ -struct dm_spi_slave_platdata { +struct dm_spi_slave_plat { unsigned int cs; uint max_hz; uint mode; @@ -102,7 +115,7 @@ enum spi_polarity { * * For driver model this is the per-child data used by the SPI bus. It can * be accessed using dev_get_parent_priv() on the slave device. The SPI uclass - * sets uip per_child_auto_alloc_size to sizeof(struct spi_slave), and the + * sets up per_child_auto to sizeof(struct spi_slave), and the * driver should not override it. Two platform data fields (max_hz and mode) * are copied into this structure to provide an initial value. This allows * them to be changed, since we should never change platform data in drivers. @@ -112,11 +125,9 @@ enum spi_polarity { * * @dev: SPI slave device * @max_hz: Maximum speed for this slave - * @speed: Current bus speed. This is 0 until the bus is first - * claimed. * @bus: ID of the bus that the slave is attached to. For * driver model this is the sequence number of the SPI - * bus (bus->seq) so does not need to be stored + * bus (dev_seq(bus)) so does not need to be stored * @cs: ID of the chip select connected to the slave. * @mode: SPI mode to use for this slave (see SPI mode flags) * @wordlen: Size of SPI word in number of bits @@ -131,7 +142,6 @@ struct spi_slave { #if CONFIG_IS_ENABLED(DM_SPI) struct udevice *dev; /* struct spi_slave is dev->parentdata */ uint max_hz; - uint speed; #else unsigned int bus; unsigned int cs; @@ -566,12 +576,12 @@ int spi_find_bus_and_cs(int busnum, int cs, struct udevice **busp, * is automatically bound on this chip select with requested speed and mode. * * Ths new slave device is probed ready for use with the speed and mode - * from platdata when available or the requested values. + * from plat when available or the requested values. * * @busnum: SPI bus number * @cs: Chip select to look for - * @speed: SPI speed to use for this slave when not available in platdata - * @mode: SPI mode to use for this slave when not available in platdata + * @speed: SPI speed to use for this slave when not available in plat + * @mode: SPI mode to use for this slave when not available in plat * @drv_name: Name of driver to attach to this chip select * @dev_name: Name of the new device thus created * @busp: Returns bus device @@ -601,7 +611,7 @@ int spi_chip_select(struct udevice *slave); int spi_find_chip_select(struct udevice *bus, int cs, struct udevice **devp); /** - * spi_slave_ofdata_to_platdata() - decode standard SPI platform data + * spi_slave_of_to_plat() - decode standard SPI platform data * * This decodes the speed and mode for a slave from a device tree node * @@ -609,8 +619,7 @@ int spi_find_chip_select(struct udevice *bus, int cs, struct udevice **devp); * @node: Node offset to read from * @plat: Place to put the decoded information */ -int spi_slave_ofdata_to_platdata(struct udevice *dev, - struct dm_spi_slave_platdata *plat); +int spi_slave_of_to_plat(struct udevice *dev, struct dm_spi_slave_plat *plat); /** * spi_cs_info() - Check information on a chip select |