diff options
| author | Simon Trimmer <simont@opensource.cirrus.com> | 2023-07-21 16:21:18 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2023-07-24 01:40:22 +0300 |
| commit | 444dfa0912639fb2431553e8e54d2b35fdf590c2 (patch) | |
| tree | abb5ec6610dc5b7ccab5c0945a7327f18b37b6fa /sound/soc/codecs/cs35l56-shared.c | |
| parent | f32a2bcbc092d60ba8a1b00a22607b220d53a25e (diff) | |
| download | linux-444dfa0912639fb2431553e8e54d2b35fdf590c2.tar.xz | |
ASoC: cs35l56: Make a common function to shutdown the DSP
Move issuing of a CS35L56_MBOX_CMD_SHUTDOWN command and then waiting for
the DSP to reach CS35L56_HALO_STATE_SHUTDOWN in the register appropriate
for the hardware revision into a common function.
Signed-off-by: Simon Trimmer <simont@opensource.cirrus.com>
Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Acked-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20230721132120.5523-10-rf@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/codecs/cs35l56-shared.c')
| -rw-r--r-- | sound/soc/codecs/cs35l56-shared.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/sound/soc/codecs/cs35l56-shared.c b/sound/soc/codecs/cs35l56-shared.c index 4e3becb9581d..ae373f335ea8 100644 --- a/sound/soc/codecs/cs35l56-shared.c +++ b/sound/soc/codecs/cs35l56-shared.c @@ -213,6 +213,32 @@ int cs35l56_mbox_send(struct cs35l56_base *cs35l56_base, unsigned int command) } EXPORT_SYMBOL_NS_GPL(cs35l56_mbox_send, SND_SOC_CS35L56_SHARED); +int cs35l56_firmware_shutdown(struct cs35l56_base *cs35l56_base) +{ + int ret; + unsigned int reg; + unsigned int val; + + ret = cs35l56_mbox_send(cs35l56_base, CS35L56_MBOX_CMD_SHUTDOWN); + if (ret) + return ret; + + if (cs35l56_base->rev < CS35L56_REVID_B0) + reg = CS35L56_DSP1_PM_CUR_STATE_A1; + else + reg = CS35L56_DSP1_PM_CUR_STATE; + + ret = regmap_read_poll_timeout(cs35l56_base->regmap, reg, + val, (val == CS35L56_HALO_STATE_SHUTDOWN), + CS35L56_HALO_STATE_POLL_US, + CS35L56_HALO_STATE_TIMEOUT_US); + if (ret < 0) + dev_err(cs35l56_base->dev, "Failed to poll PM_CUR_STATE to 1 is %d (ret %d)\n", + val, ret); + return ret; +} +EXPORT_SYMBOL_NS_GPL(cs35l56_firmware_shutdown, SND_SOC_CS35L56_SHARED); + int cs35l56_wait_for_firmware_boot(struct cs35l56_base *cs35l56_base) { unsigned int reg; |