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Add an ioctl to get/set the SPI transfer mode. Also, make the bus clock

Browse source 
frequency ioctl actually set the corresponding ivar instead of just storing
the value locally in the softc (and then not using it for anything).  Also,
return the correct error code if the ioctl cmd is not recognized.
This commit is contained in:
Ian Lepore 2018-04-07 20:38:01 +00:00
parent 948a7ee9d8
commit a0e911e097
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=332233
1 changed files with 11 additions and 12 deletions
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23
sys/dev/spibus/spigen.c
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@ -50,6 +50,7 @@ __FBSDID("$FreeBSD$");
#include <vm/vm_pager.h>
#include <dev/spibus/spi.h>
#include <dev/spibus/spibusvar.h>
#ifdef FDT
#include <dev/ofw/ofw_bus_subr.h>
@ -64,7 +65,6 @@ struct spigen_softc {
device_t sc_dev;
struct cdev *sc_cdev;
struct mtx sc_mtx;
uint32_t sc_clock_speed;
uint32_t sc_command_length_max; /* cannot change while mmapped */
uint32_t sc_data_length_max; /* cannot change while mmapped */
vm_object_t sc_mmap_buffer; /* command, then data */
@ -320,7 +320,6 @@ spigen_ioctl(struct cdev *cdev, u_long cmd, caddr_t data, int fflag,
struct thread *td)
{
device_t dev = cdev->si_drv1;
struct spigen_softc *sc = device_get_softc(dev);
int error;
switch (cmd) {
@ -331,20 +330,20 @@ spigen_ioctl(struct cdev *cdev, u_long cmd, caddr_t data, int fflag,
error = spigen_transfer_mmapped(cdev, (struct spigen_transfer_mmapped *)data);
break;
case SPIGENIOC_GET_CLOCK_SPEED:
mtx_lock(&sc->sc_mtx);
*(uint32_t *)data = sc->sc_clock_speed;
/* XXX TODO: implement spibus ivar call */
mtx_unlock(&sc->sc_mtx);
error = 0;
error = spibus_get_clock(dev, (uintptr_t *)data);
break;
case SPIGENIOC_SET_CLOCK_SPEED:
mtx_lock(&sc->sc_mtx);
sc->sc_clock_speed = *(uint32_t *)data;
mtx_unlock(&sc->sc_mtx);
error = 0;
error = spibus_set_clock(dev, *(uint32_t *)data);
break;
case SPIGENIOC_GET_SPI_MODE:
error = spibus_get_mode(dev, (uintptr_t *)data);
break;
case SPIGENIOC_SET_SPI_MODE:
error = spibus_set_mode(dev, *(uint32_t *)data);
break;
default:
error = EOPNOTSUPP;
error = ENOTTY;
break;
}
return (error);
}