linux-kernel - [PATCH 4/4] slimbus: generate MODULE_ALIAS() from MODULE_DEVICE

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Message-Id: <20240902141004.70048-5-srinivas.kandagatla@linaro.org>
Date: Mon,  2 Sep 2024 15:10:04 +0100
From: srinivas.kandagatla@...aro.org
To: gregkh@...uxfoundation.org
Cc: linux-kernel@...r.kernel.org,
	Masahiro Yamada <masahiroy@...nel.org>,
	Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
Subject: [PATCH 4/4] slimbus: generate MODULE_ALIAS() from MODULE_DEVICE_TABLE()

From: Masahiro Yamada <masahiroy@...nel.org>

Commit 9e663f4811c6 ("slimbus: core: add support to uevent") added the
MODALIAS=slim:* uevent variable, but modpost does not generate the
corresponding MODULE_ALIAS().

To support automatic module loading, slimbus drivers still need to
manually add MODULE_ALIAS("slim:<manf_id>:<prod_code>:*"), as seen in
sound/soc/codecs/wcd9335.c.

To automate this, make modpost generate the proper MODULE_ALIAS() from
MODULE_DEVICE_TABLE(slim, ).

Signed-off-by: Masahiro Yamada <masahiroy@...nel.org>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
---
 scripts/mod/devicetable-offsets.c |  4 ++++
 scripts/mod/file2alias.c          | 11 +++++++++++
 2 files changed, 15 insertions(+)

diff --git a/scripts/mod/devicetable-offsets.c b/scripts/mod/devicetable-offsets.c
index 518200813d4e..9c7b404defbd 100644
--- a/scripts/mod/devicetable-offsets.c
+++ b/scripts/mod/devicetable-offsets.c
@@ -153,6 +153,10 @@ int main(void)
 	DEVID_FIELD(i3c_device_id, part_id);
 	DEVID_FIELD(i3c_device_id, extra_info);
 
+	DEVID(slim_device_id);
+	DEVID_FIELD(slim_device_id, manf_id);
+	DEVID_FIELD(slim_device_id, prod_code);
+
 	DEVID(spi_device_id);
 	DEVID_FIELD(spi_device_id, name);
 
diff --git a/scripts/mod/file2alias.c b/scripts/mod/file2alias.c
index 5d1c61fa5a55..99dce93a4188 100644
--- a/scripts/mod/file2alias.c
+++ b/scripts/mod/file2alias.c
@@ -960,6 +960,16 @@ static int do_i3c_entry(const char *filename, void *symval,
 	return 1;
 }
 
+static int do_slim_entry(const char *filename, void *symval, char *alias)
+{
+	DEF_FIELD(symval, slim_device_id, manf_id);
+	DEF_FIELD(symval, slim_device_id, prod_code);
+
+	sprintf(alias, "slim:%x:%x:*", manf_id, prod_code);
+
+	return 1;
+}
+
 /* Looks like: spi:S */
 static int do_spi_entry(const char *filename, void *symval,
 			char *alias)
@@ -1555,6 +1565,7 @@ static const struct devtable devtable[] = {
 	{"rpmsg", SIZE_rpmsg_device_id, do_rpmsg_entry},
 	{"i2c", SIZE_i2c_device_id, do_i2c_entry},
 	{"i3c", SIZE_i3c_device_id, do_i3c_entry},
+	{"slim", SIZE_slim_device_id, do_slim_entry},
 	{"spi", SIZE_spi_device_id, do_spi_entry},
 	{"dmi", SIZE_dmi_system_id, do_dmi_entry},
 	{"platform", SIZE_platform_device_id, do_platform_entry},
-- 
2.25.1