linux-kernel - [PATCH 1/5] soundwire: export sdw_update() and sdw_update_no

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Message-Id: <20210614180815.153711-2-pierre-louis.bossart@linux.intel.com>
Date:   Mon, 14 Jun 2021 13:08:11 -0500
From:   Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
To:     alsa-devel@...a-project.org, srinivas.kandagatla@...aro.org
Cc:     tiwai@...e.de, broonie@...nel.org, vkoul@...nel.org,
        gregkh@...uxfoundation.org,
        Bard liao <yung-chuan.liao@...ux.intel.com>,
        Rander Wang <rander.wang@...ux.intel.com>,
        Shuming Fan <shumingf@...ltek.com>,
        Jack Yu <jack.yu@...ltek.com>,
        Oder Chiou <oder_chiou@...ltek.com>,
        Jaroslav Kysela <perex@...ex.cz>,
        Hui Wang <hui.wang@...onical.com>,
        Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>,
        Bard Liao <bard.liao@...el.com>,
        Péter Ujfalusi <peter.ujfalusi@...ux.intel.com>,
        Sanyog Kale <sanyog.r.kale@...el.com>,
        linux-kernel@...r.kernel.org (open list)
Subject: [PATCH 1/5] soundwire: export sdw_update() and sdw_update_no_pm()

We currently export sdw_read() and sdw_write() but the sdw_update()
and sdw_update_no_pm() are currently available only to the bus
code. This was missed in an earlier contribution.

Export both functions so that codec drivers can perform
read-modify-write operations without duplicating the code.

Fixes: b04c975e654c ('soundwire: bus: use sdw_update_no_pm when initializing a device')
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
Reviewed-by: Bard Liao <bard.liao@...el.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@...ux.intel.com>
---
 drivers/soundwire/bus.c       | 17 ++++++++++++++++-
 drivers/soundwire/bus.h       | 13 -------------
 include/linux/soundwire/sdw.h |  3 +++
 3 files changed, 19 insertions(+), 14 deletions(-)

diff --git a/drivers/soundwire/bus.c b/drivers/soundwire/bus.c
index a9e0aa72654d..5d5b0bd59ae3 100644
--- a/drivers/soundwire/bus.c
+++ b/drivers/soundwire/bus.c
@@ -492,7 +492,7 @@ int sdw_read_no_pm(struct sdw_slave *slave, u32 addr)
 }
 EXPORT_SYMBOL(sdw_read_no_pm);
 
-static int sdw_update_no_pm(struct sdw_slave *slave, u32 addr, u8 mask, u8 val)
+int sdw_update_no_pm(struct sdw_slave *slave, u32 addr, u8 mask, u8 val)
 {
 	int tmp;
 
@@ -503,6 +503,21 @@ static int sdw_update_no_pm(struct sdw_slave *slave, u32 addr, u8 mask, u8 val)
 	tmp = (tmp & ~mask) | val;
 	return sdw_write_no_pm(slave, addr, tmp);
 }
+EXPORT_SYMBOL(sdw_update_no_pm);
+
+/* Read-Modify-Write Slave register */
+int sdw_update(struct sdw_slave *slave, u32 addr, u8 mask, u8 val)
+{
+	int tmp;
+
+	tmp = sdw_read(slave, addr);
+	if (tmp < 0)
+		return tmp;
+
+	tmp = (tmp & ~mask) | val;
+	return sdw_write(slave, addr, tmp);
+}
+EXPORT_SYMBOL(sdw_update);
 
 /**
  * sdw_nread() - Read "n" contiguous SDW Slave registers
diff --git a/drivers/soundwire/bus.h b/drivers/soundwire/bus.h
index 40354469860a..7631ef5e71fb 100644
--- a/drivers/soundwire/bus.h
+++ b/drivers/soundwire/bus.h
@@ -201,19 +201,6 @@ static inline void sdw_fill_port_params(struct sdw_port_params *params,
 	params->data_mode = data_mode;
 }
 
-/* Read-Modify-Write Slave register */
-static inline int sdw_update(struct sdw_slave *slave, u32 addr, u8 mask, u8 val)
-{
-	int tmp;
-
-	tmp = sdw_read(slave, addr);
-	if (tmp < 0)
-		return tmp;
-
-	tmp = (tmp & ~mask) | val;
-	return sdw_write(slave, addr, tmp);
-}
-
 /* broadcast read/write for tests */
 int sdw_bread_no_pm_unlocked(struct sdw_bus *bus, u16 dev_num, u32 addr);
 int sdw_bwrite_no_pm_unlocked(struct sdw_bus *bus, u16 dev_num, u32 addr, u8 value);
diff --git a/include/linux/soundwire/sdw.h b/include/linux/soundwire/sdw.h
index ced07f8fde87..de9802a24e7e 100644
--- a/include/linux/soundwire/sdw.h
+++ b/include/linux/soundwire/sdw.h
@@ -1041,6 +1041,9 @@ 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_update(struct sdw_slave *slave, u32 addr, u8 mask, u8 val);
+int sdw_update_no_pm(struct sdw_slave *slave, u32 addr, u8 mask, 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);
 
-- 
2.25.1