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authorPierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>2021-07-14 05:22:06 +0200
committerVinod Koul <vkoul@kernel.org>2021-08-02 07:38:22 +0200
commit7fae3cfb7007038a320db43ddffb7688388a0260 (patch)
tree0caec51126987985af8bfe2b8618a22120d145f9 /drivers/soundwire
parentsoundwire: add flag to ignore all command/control for mockup devices (diff)
downloadlinux-7fae3cfb7007038a320db43ddffb7688388a0260.tar.xz
linux-7fae3cfb7007038a320db43ddffb7688388a0260.zip
soundwire: bus: squelch error returned by mockup devices
All read and writes from/to SoundWire mockup devices will return -ENODATA/Command_Ignored, this patch forces a Command_OK result to let the bus perform the required configurations, e.g. for the Data Ports, which will only have an effect on the Master side. Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Rander Wang <rander.wang@intel.com> Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com> Link: https://lore.kernel.org/r/20210714032209.11284-8-yung-chuan.liao@linux.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/soundwire')
-rw-r--r--drivers/soundwire/bus.c10
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/soundwire/bus.c b/drivers/soundwire/bus.c
index b3ed0123ed27..1b115734a8f6 100644
--- a/drivers/soundwire/bus.c
+++ b/drivers/soundwire/bus.c
@@ -390,7 +390,10 @@ sdw_nread_no_pm(struct sdw_slave *slave, u32 addr, size_t count, u8 *val)
if (ret < 0)
return ret;
- return sdw_transfer(slave->bus, &msg);
+ ret = sdw_transfer(slave->bus, &msg);
+ if (slave->is_mockup_device)
+ ret = 0;
+ return ret;
}
static int
@@ -404,7 +407,10 @@ sdw_nwrite_no_pm(struct sdw_slave *slave, u32 addr, size_t count, const u8 *val)
if (ret < 0)
return ret;
- return sdw_transfer(slave->bus, &msg);
+ ret = sdw_transfer(slave->bus, &msg);
+ if (slave->is_mockup_device)
+ ret = 0;
+ return ret;
}
int sdw_write_no_pm(struct sdw_slave *slave, u32 addr, u8 value)