| Message ID | 20231026150558.2105827-9-sbinding@opensource.cirrus.com (mailing list archive) |
|---|---|
| State | Accepted |
| Commit | 76c121821a3128eb9d0183a525cf334beb9ccc47 |
| Headers | show |
| Series | System Suspend fixes and improvements for CS35L41 HDA | expand |
On Thu, Oct 26, 2023 at 04:05:58PM +0100, Stefan Binding wrote: > The existing code checks for the correct state transition after sending > a command. However, it is possible for the message box to return -1, > which indicates an error, if an error has occurred in the firmware. > We can detect if the error has occurred, and return a different error. > In addition, there is no recovering from a CSPL error, so the retry > mechanism is not needed in this case, and we can return immediately. Acked-by: Mark Brown <broonie@kernel.org>
diff --git a/include/sound/cs35l41.h b/include/sound/cs35l41.h index 80df80fe31e2..043f8ac65dbf 100644 --- a/include/sound/cs35l41.h +++ b/include/sound/cs35l41.h @@ -816,6 +816,8 @@ struct cs35l41_otp_map_element_t { }; enum cs35l41_cspl_mbox_status { + CSPL_MBOX_STS_ERROR = U32_MAX, + CSPL_MBOX_STS_ERROR2 = 0x00ffffff, // firmware not always sign-extending 24-bit value CSPL_MBOX_STS_RUNNING = 0, CSPL_MBOX_STS_PAUSED = 1, CSPL_MBOX_STS_RDY_FOR_REINIT = 2, diff --git a/sound/soc/codecs/cs35l41-lib.c b/sound/soc/codecs/cs35l41-lib.c index ddedb7e63cb6..4569e4f7cf7e 100644 --- a/sound/soc/codecs/cs35l41-lib.c +++ b/sound/soc/codecs/cs35l41-lib.c @@ -1474,6 +1474,11 @@ int cs35l41_set_cspl_mbox_cmd(struct device *dev, struct regmap *regmap, continue; } + if (sts == CSPL_MBOX_STS_ERROR || sts == CSPL_MBOX_STS_ERROR2) { + dev_err(dev, "CSPL Error Detected\n"); + return -EINVAL; + } + if (!cs35l41_check_cspl_mbox_sts(cmd, sts)) dev_dbg(dev, "[%u] cmd %u returned invalid sts %u", i, cmd, sts); else
The existing code checks for the correct state transition after sending a command. However, it is possible for the message box to return -1, which indicates an error, if an error has occurred in the firmware. We can detect if the error has occurred, and return a different error. In addition, there is no recovering from a CSPL error, so the retry mechanism is not needed in this case, and we can return immediately. Signed-off-by: Stefan Binding <sbinding@opensource.cirrus.com> --- include/sound/cs35l41.h | 2 ++ sound/soc/codecs/cs35l41-lib.c | 5 +++++ 2 files changed, 7 insertions(+)