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xfree86: add platform bus hotplug support (v3)

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This provides add/remove support for platform devices at xfree86 ddx level.

v2: cleanup properly if no driver found.

v3: load the modesetting driver before checking driver list.

Reviewed-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Dave Airlie
2012-06-05 17:30:39 +01:00
parent b27cf30995
commit ef6686480a
3 changed files with 157 additions and 0 deletions
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49
hw/xfree86/os-support/linux/lnx_platform.c
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@@ -15,6 +15,8 @@
#include "xf86platformBus.h"
#include "xf86Bus.h"
#include "hotplug.h"
static Bool
get_drm_info(struct OdevAttributes *attribs, char *path)
{
@@ -127,4 +129,51 @@ out_free:
config_odev_free_attribute_list(attribs);
}
void NewGPUDeviceRequest(struct OdevAttributes *attribs)
{
int old_num = xf86_num_platform_devices;
int ret;
xf86PlatformDeviceProbe(attribs);
if (old_num == xf86_num_platform_devices)
return;
ret = xf86platformAddDevice(xf86_num_platform_devices-1);
if (ret == -1)
xf86_remove_platform_device(xf86_num_platform_devices-1);
ErrorF("xf86: found device %d\n", xf86_num_platform_devices);
return;
}
void DeleteGPUDeviceRequest(struct OdevAttributes *attribs)
{
struct OdevAttribute *attrib;
int index;
char *syspath = NULL;
xorg_list_for_each_entry(attrib, &attribs->list, member) {
if (attrib->attrib_id == ODEV_ATTRIB_SYSPATH) {
syspath = attrib->attrib_name;
break;
}
}
for (index = 0; index < xf86_num_platform_devices; index++) {
char *dspath;
dspath = xf86_get_platform_attrib(index, ODEV_ATTRIB_SYSPATH);
if (!strcmp(syspath, dspath))
break;
}
if (index == xf86_num_platform_devices)
goto out;
ErrorF("xf86: remove device %d %s\n", index, syspath);
xf86platformRemoveDevice(index);
out:
config_odev_free_attribute_list(attribs);
}
#endif