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authorManivannan Sadhasivam <manivannan.sadhasivam@linaro.org>2020-02-20 12:58:50 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2020-03-19 09:41:05 +0300
commite6b0de469c5babfe29a86be289408ba2070ea44a (patch)
tree134a586497353c5875d07e14467a7e21f7364b36 /scripts
parent189ff97cca53e3fe2d8b38d64105040ce17fc62d (diff)
downloadlinux-e6b0de469c5babfe29a86be289408ba2070ea44a.tar.xz
bus: mhi: core: Add uevent support for module autoloading
Add uevent support to MHI bus so that the client drivers can be autoloaded by udev when the MHI devices gets created. The client drivers are expected to provide MODULE_DEVICE_TABLE with the MHI id_table struct so that the alias can be exported. Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Reviewed-by: Jeffrey Hugo <jhugo@codeaurora.org> Tested-by: Jeffrey Hugo <jhugo@codeaurora.org> Link: https://lore.kernel.org/r/20200220095854.4804-13-manivannan.sadhasivam@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'scripts')
-rw-r--r--scripts/mod/devicetable-offsets.c3
-rw-r--r--scripts/mod/file2alias.c10
2 files changed, 13 insertions, 0 deletions
diff --git a/scripts/mod/devicetable-offsets.c b/scripts/mod/devicetable-offsets.c
index 054405b90ba4..fe3f4a95cb21 100644
--- a/scripts/mod/devicetable-offsets.c
+++ b/scripts/mod/devicetable-offsets.c
@@ -231,5 +231,8 @@ int main(void)
DEVID(wmi_device_id);
DEVID_FIELD(wmi_device_id, guid_string);
+ DEVID(mhi_device_id);
+ DEVID_FIELD(mhi_device_id, chan);
+
return 0;
}
diff --git a/scripts/mod/file2alias.c b/scripts/mod/file2alias.c
index c91eba751804..cae6a4e471b5 100644
--- a/scripts/mod/file2alias.c
+++ b/scripts/mod/file2alias.c
@@ -1335,6 +1335,15 @@ static int do_wmi_entry(const char *filename, void *symval, char *alias)
return 1;
}
+/* Looks like: mhi:S */
+static int do_mhi_entry(const char *filename, void *symval, char *alias)
+{
+ DEF_FIELD_ADDR(symval, mhi_device_id, chan);
+ sprintf(alias, MHI_DEVICE_MODALIAS_FMT, *chan);
+
+ return 1;
+}
+
/* Does namelen bytes of name exactly match the symbol? */
static bool sym_is(const char *name, unsigned namelen, const char *symbol)
{
@@ -1407,6 +1416,7 @@ static const struct devtable devtable[] = {
{"typec", SIZE_typec_device_id, do_typec_entry},
{"tee", SIZE_tee_client_device_id, do_tee_entry},
{"wmi", SIZE_wmi_device_id, do_wmi_entry},
+ {"mhi", SIZE_mhi_device_id, do_mhi_entry},
};
/* Create MODULE_ALIAS() statements.