bus: fsl-mc: add root dprc rescan attribute
Introduce the rescan attribute as a device attribute to synchronize the fsl-mc bus objects and the MC firmware. To rescan the root dprc only, e.g. echo 1 > /sys/bus/fsl-mc/devices/dprc.1/rescan Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>5.4-rM2-2.2.x-imx-squashed
parent
672699a389
commit
959a22bedb
|
@ -0,0 +1,9 @@
|
||||||
|
What: /sys/bus/fsl-mc/devices/dprc.*/rescan
|
||||||
|
Date: November 2018
|
||||||
|
KernelVersion: 5.0
|
||||||
|
Contact: Ioana Ciornei <ioana.ciornei@nxp.com>
|
||||||
|
Description: Writing a non-zero value to this attribute will
|
||||||
|
force a rescan of dprc.X container in the system and
|
||||||
|
synchronize the objects under dprc.X and the
|
||||||
|
Management Complex firmware.
|
||||||
|
Users: Userspace drivers and management tools
|
|
@ -13448,6 +13448,7 @@ F: Documentation/devicetree/bindings/misc/fsl,qoriq-mc.txt
|
||||||
F: Documentation/networking/device_drivers/freescale/dpaa2/overview.rst
|
F: Documentation/networking/device_drivers/freescale/dpaa2/overview.rst
|
||||||
F: Documentation/networking/dpaa2/overview.rst
|
F: Documentation/networking/dpaa2/overview.rst
|
||||||
F: include/uapi/linux/fsl_mc.h
|
F: include/uapi/linux/fsl_mc.h
|
||||||
|
F: Documentation/ABI/stable/sysfs-bus-fsl-mc
|
||||||
|
|
||||||
QT1010 MEDIA DRIVER
|
QT1010 MEDIA DRIVER
|
||||||
M: Antti Palosaari <crope@iki.fi>
|
M: Antti Palosaari <crope@iki.fi>
|
||||||
|
|
|
@ -354,6 +354,33 @@ static int dprc_scan_container(struct fsl_mc_device *mc_bus_dev)
|
||||||
return 0;
|
return 0;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
static ssize_t rescan_store(struct device *dev,
|
||||||
|
struct device_attribute *attr,
|
||||||
|
const char *buf, size_t count)
|
||||||
|
{
|
||||||
|
struct fsl_mc_device *root_mc_dev;
|
||||||
|
struct fsl_mc_bus *root_mc_bus;
|
||||||
|
unsigned long val;
|
||||||
|
|
||||||
|
if (!fsl_mc_is_root_dprc(dev))
|
||||||
|
return -EINVAL;
|
||||||
|
|
||||||
|
root_mc_dev = to_fsl_mc_device(dev);
|
||||||
|
root_mc_bus = to_fsl_mc_bus(root_mc_dev);
|
||||||
|
|
||||||
|
if (kstrtoul(buf, 0, &val) < 0)
|
||||||
|
return -EINVAL;
|
||||||
|
|
||||||
|
if (val) {
|
||||||
|
mutex_lock(&root_mc_bus->scan_mutex);
|
||||||
|
dprc_scan_objects(root_mc_dev, NULL);
|
||||||
|
mutex_unlock(&root_mc_bus->scan_mutex);
|
||||||
|
}
|
||||||
|
|
||||||
|
return count;
|
||||||
|
}
|
||||||
|
static DEVICE_ATTR_WO(rescan);
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* dprc_irq0_handler - Regular ISR for DPRC interrupt 0
|
* dprc_irq0_handler - Regular ISR for DPRC interrupt 0
|
||||||
*
|
*
|
||||||
|
@ -692,6 +719,13 @@ static int dprc_probe(struct fsl_mc_device *mc_dev)
|
||||||
|
|
||||||
mutex_init(&mc_bus->scan_mutex);
|
mutex_init(&mc_bus->scan_mutex);
|
||||||
|
|
||||||
|
error = device_create_file(&mc_dev->dev, &dev_attr_rescan);
|
||||||
|
if (error < 0) {
|
||||||
|
dev_err(&mc_dev->dev, "device_create_file() failed: %d\n",
|
||||||
|
error);
|
||||||
|
goto error_cleanup_open;
|
||||||
|
}
|
||||||
|
|
||||||
/*
|
/*
|
||||||
* Discover MC objects in DPRC object:
|
* Discover MC objects in DPRC object:
|
||||||
*/
|
*/
|
||||||
|
@ -788,6 +822,8 @@ static int dprc_remove(struct fsl_mc_device *mc_dev)
|
||||||
fsl_mc_uapi_remove_device_file(mc_bus);
|
fsl_mc_uapi_remove_device_file(mc_bus);
|
||||||
}
|
}
|
||||||
|
|
||||||
|
device_remove_file(&mc_dev->dev, &dev_attr_rescan);
|
||||||
|
|
||||||
dev_info(&mc_dev->dev, "DPRC device unbound from driver");
|
dev_info(&mc_dev->dev, "DPRC device unbound from driver");
|
||||||
return 0;
|
return 0;
|
||||||
}
|
}
|
||||||
|
|
Loading…
Reference in New Issue