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ANDROID: gunyah: Add support for Gunyah vendor modules

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Add support for further vendor features of Gunyah. To probe the vendor
features, add auxiliary device and export gunyah_rm_call to all the vendor
features to make not-yet-upstreamed RM RPC calls.

Bug: 338347082
Change-Id: I13de37b7c0d5d6c85bdd32a20c39fdde99cffbdd
Signed-off-by: Sreenad Menon <quic_sreemeno@quicinc.com>
Signed-off-by: Elliot Berman <elliot.berman@oss.qualcomm.com>
This commit is contained in:
Sreenad Menon
2024-05-02 08:33:18 -07:00
committed by Treehugger Robot
parent 91fe754984
commit 8c11dcc79b
2 changed files with 41 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/virt/gunyah/Kconfig
+1
View File
@@ -4,6 +4,7 @@ config GUNYAH
tristate "Gunyah Virtualization drivers"
depends on ARM64
select GUNYAH_PLATFORM_HOOKS
select AUXILIARY_BUS
imply GUNYAH_QCOM_PLATFORM if ARCH_QCOM
help
The Gunyah drivers are the helper interfaces that run in a guest VM
drivers/virt/gunyah/rsc_mgr.c
+40 -1
View File
@@ -12,6 +12,7 @@
#include <linux/of_irq.h>
#include <linux/platform_device.h>
#include <linux/miscdevice.h>
#include <linux/auxiliary_bus.h>
#include <asm/gunyah.h>
@@ -141,6 +142,7 @@ struct gunyah_rm {
struct completion send_ready;
struct blocking_notifier_head nh;
struct auxiliary_device adev;
struct miscdevice miscdev;
struct fwnode_handle *parent_fwnode;
};
@@ -653,6 +655,7 @@ out:
xa_erase(&rm->call_xarray, message.reply.seq);
return ret;
}
EXPORT_SYMBOL_GPL(gunyah_rm_call);
int gunyah_rm_notifier_register(struct gunyah_rm *rm, struct notifier_block *nb)
{
@@ -754,6 +757,32 @@ static int gunyah_rm_probe_rx_msgq(struct gunyah_rm *rm,
"gunyah_rm_rx", rm);
}
static void gunyah_adev_release(struct device *dev)
{
/* no-op */
}
static int gunyah_adev_init(struct gunyah_rm *rm, const char *name)
{
struct auxiliary_device *adev = &rm->adev;
int ret = 0;
adev->name = name;
adev->dev.parent = rm->dev;
adev->dev.release = gunyah_adev_release;
ret = auxiliary_device_init(adev);
if (ret)
return ret;
ret = auxiliary_device_add(adev);
if (ret) {
auxiliary_device_uninit(adev);
return ret;
}
return ret;
}
static int gunyah_rm_probe(struct platform_device *pdev)
{
struct device_node *parent_irq_node;
@@ -803,7 +832,17 @@ static int gunyah_rm_probe(struct platform_device *pdev)
rm->miscdev.minor = MISC_DYNAMIC_MINOR;
rm->miscdev.fops = &gunyah_dev_fops;
return misc_register(&rm->miscdev);
ret = misc_register(&rm->miscdev);
if (ret) {
dev_err(&pdev->dev, "Failed to register gunyah misc device\n");
} else {
ret = gunyah_adev_init(rm, "gh_rm_core");
if (ret) {
dev_err(&pdev->dev, "Failed to add gh_rm_core device\n");
return ret;
}
}
return 0;
}
static void gunyah_rm_remove(struct platform_device *pdev)