linux-kernel - [PATCH 1/3] soundwire: export sdw_compare_devid() and sdw_extract_slave

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Message-Id: <20210226170250.9067-2-srinivas.kandagatla@linaro.org>
Date:   Fri, 26 Feb 2021 17:02:48 +0000
From:   Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
To:     vkoul@...nel.org
Cc:     yung-chuan.liao@...ux.intel.com,
        pierre-louis.bossart@...ux.intel.com, sanyog.r.kale@...el.com,
        linux-kernel@...r.kernel.org, alsa-devel@...a-project.org,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
Subject: [PATCH 1/3] soundwire: export sdw_compare_devid() and sdw_extract_slave_id()

Exporting these two functions makes sense as it can be used by
other controllers like Qualcomm during auto-enumeration!

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
---
 drivers/soundwire/bus.c       | 4 +++-
 include/linux/soundwire/sdw.h | 2 ++
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/soundwire/bus.c b/drivers/soundwire/bus.c
index 48577b78f282..46d3407c097f 100644
--- a/drivers/soundwire/bus.c
+++ b/drivers/soundwire/bus.c
@@ -608,7 +608,7 @@ static struct sdw_slave *sdw_get_slave(struct sdw_bus *bus, int i)
 	return NULL;
 }
 
-static int sdw_compare_devid(struct sdw_slave *slave, struct sdw_slave_id id)
+int sdw_compare_devid(struct sdw_slave *slave, struct sdw_slave_id id)
 {
 	if (slave->id.mfg_id != id.mfg_id ||
 	    slave->id.part_id != id.part_id ||
@@ -619,6 +619,7 @@ static int sdw_compare_devid(struct sdw_slave *slave, struct sdw_slave_id id)
 
 	return 0;
 }
+EXPORT_SYMBOL(sdw_compare_devid);
 
 /* called with bus_lock held */
 static int sdw_get_device_num(struct sdw_slave *slave)
@@ -703,6 +704,7 @@ void sdw_extract_slave_id(struct sdw_bus *bus,
 		"SDW Slave class_id 0x%02x, mfg_id 0x%04x, part_id 0x%04x, unique_id 0x%x, version 0x%x\n",
 		id->class_id, id->mfg_id, id->part_id, id->unique_id, id->sdw_version);
 }
+EXPORT_SYMBOL(sdw_extract_slave_id);
 
 static int sdw_program_device_num(struct sdw_bus *bus)
 {
diff --git a/include/linux/soundwire/sdw.h b/include/linux/soundwire/sdw.h
index d08039d65825..8478a1f5f833 100644
--- a/include/linux/soundwire/sdw.h
+++ b/include/linux/soundwire/sdw.h
@@ -1009,5 +1009,7 @@ int sdw_write_no_pm(struct sdw_slave *slave, u32 addr, u8 value);
 int sdw_read_no_pm(struct sdw_slave *slave, u32 addr);
 int sdw_nread(struct sdw_slave *slave, u32 addr, size_t count, u8 *val);
 int sdw_nwrite(struct sdw_slave *slave, u32 addr, size_t count, u8 *val);
+int sdw_compare_devid(struct sdw_slave *slave, struct sdw_slave_id id);
+void sdw_extract_slave_id(struct sdw_bus *bus, u64 addr, struct sdw_slave_id *id);
 
 #endif /* __SOUNDWIRE_H */
-- 
2.21.0