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spi: sandbox_spi: Implement speed/mode setup

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Implement sandbox_spi_set_{speed, mode} routines, to be able to keep track
of the current bus speed/mode. This will help determine whether the values
passed from dm_spi_claim_bus() are valid.

Signed-off-by: Ovidiu Panait <ovidiu.panait@windriver.com>
This commit is contained in:
Ovidiu Panait 2020-12-14 19:06:48 +02:00 • committed by Simon Glass
parent 1dc53ce71d
commit 2da1800456
1 changed files with 26 additions and 0 deletions
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26
drivers/spi/sandbox_spi.c
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@ -28,6 +28,23 @@
# define CONFIG_SPI_IDLE_VAL 0xFF
#endif
/**
* struct sandbox_spi_priv - Sandbox SPI private data
*
* Helper struct to keep track of the sandbox SPI bus internal state. It is
* used in unit tests to verify that dm spi functions update the bus
* speed/mode properly (for instance, when jumping back and forth between spi
* slaves claiming the bus, we need to make sure that the bus speed is updated
* accordingly for each slave).
*
* @speed: Current bus speed.
* @mode: Current bus mode.
*/
struct sandbox_spi_priv {
uint speed;
uint mode;
};
__weak int sandbox_spi_get_emul(struct sandbox_state *state,
struct udevice *bus, struct udevice *slave,
struct udevice **emulp)
@ -90,11 +107,19 @@ static int sandbox_spi_xfer(struct udevice *slave, unsigned int bitlen,
static int sandbox_spi_set_speed(struct udevice *bus, uint speed)
{
struct sandbox_spi_priv *priv = dev_get_priv(bus);
priv->speed = speed;
return 0;
}
static int sandbox_spi_set_mode(struct udevice *bus, uint mode)
{
struct sandbox_spi_priv *priv = dev_get_priv(bus);
priv->mode = mode;
return 0;
}
@ -136,4 +161,5 @@ U_BOOT_DRIVER(sandbox_spi) = {
.id = UCLASS_SPI,
.of_match = sandbox_spi_ids,
.ops = &sandbox_spi_ops,
.priv_auto = sizeof(struct sandbox_spi_priv),
};