From: Stefan Binding sbinding@opensource.cirrus.com
CS35L41 HDA Driver will support hibernation using DSP firmware, move the exit hibernate function into shared code so this can be reused.
Acked-by: Charles Keepax ckeepax@opensource.cirrus.com
Signed-off-by: Stefan Binding sbinding@opensource.cirrus.com Signed-off-by: Vitaly Rodionov vitalyr@opensource.cirrus.com --- include/sound/cs35l41.h | 1 + sound/soc/codecs/cs35l41-lib.c | 60 +++++++++++++++++++++++++++++++++ sound/soc/codecs/cs35l41.c | 61 +--------------------------------- 3 files changed, 62 insertions(+), 60 deletions(-)
diff --git a/include/sound/cs35l41.h b/include/sound/cs35l41.h index 8887087815a7..f848ba1e75b3 100644 --- a/include/sound/cs35l41.h +++ b/include/sound/cs35l41.h @@ -885,6 +885,7 @@ void cs35l41_configure_cs_dsp(struct device *dev, struct regmap *reg, struct cs_ int cs35l41_set_cspl_mbox_cmd(struct device *dev, struct regmap *regmap, enum cs35l41_cspl_mbox_cmd cmd); int cs35l41_write_fs_errata(struct device *dev, struct regmap *regmap); +int cs35l41_exit_hibernate(struct device *dev, struct regmap *regmap); int cs35l41_init_boost(struct device *dev, struct regmap *regmap, struct cs35l41_hw_cfg *hw_cfg); bool cs35l41_safe_reset(struct regmap *regmap, enum cs35l41_boost_type b_type); diff --git a/sound/soc/codecs/cs35l41-lib.c b/sound/soc/codecs/cs35l41-lib.c index 6d3070ea9e06..cc5366c8bdd6 100644 --- a/sound/soc/codecs/cs35l41-lib.c +++ b/sound/soc/codecs/cs35l41-lib.c @@ -1321,6 +1321,66 @@ int cs35l41_write_fs_errata(struct device *dev, struct regmap *regmap) } EXPORT_SYMBOL_GPL(cs35l41_write_fs_errata);
+static void cs35l41_wait_for_pwrmgt_sts(struct device *dev, struct regmap *regmap) +{ + const int pwrmgt_retries = 10; + unsigned int sts; + int i, ret; + + for (i = 0; i < pwrmgt_retries; i++) { + ret = regmap_read(regmap, CS35L41_PWRMGT_STS, &sts); + if (ret) + dev_err(dev, "Failed to read PWRMGT_STS: %d\n", ret); + else if (!(sts & CS35L41_WR_PEND_STS_MASK)) + return; + + udelay(20); + } + + dev_err(dev, "Timed out reading PWRMGT_STS\n"); +} + +int cs35l41_exit_hibernate(struct device *dev, struct regmap *regmap) +{ + const int wake_retries = 20; + const int sleep_retries = 5; + int ret, i, j; + + for (i = 0; i < sleep_retries; i++) { + dev_dbg(dev, "Exit hibernate\n"); + + for (j = 0; j < wake_retries; j++) { + ret = cs35l41_set_cspl_mbox_cmd(dev, regmap, + CSPL_MBOX_CMD_OUT_OF_HIBERNATE); + if (!ret) + break; + + usleep_range(100, 200); + } + + if (j < wake_retries) { + dev_dbg(dev, "Wake success at cycle: %d\n", j); + return 0; + } + + dev_err(dev, "Wake failed, re-enter hibernate: %d\n", ret); + + cs35l41_wait_for_pwrmgt_sts(dev, regmap); + regmap_write(regmap, CS35L41_WAKESRC_CTL, 0x0088); + + cs35l41_wait_for_pwrmgt_sts(dev, regmap); + regmap_write(regmap, CS35L41_WAKESRC_CTL, 0x0188); + + cs35l41_wait_for_pwrmgt_sts(dev, regmap); + regmap_write(regmap, CS35L41_PWRMGT_CTL, 0x3); + } + + dev_err(dev, "Timed out waking device\n"); + + return -ETIMEDOUT; +} +EXPORT_SYMBOL_GPL(cs35l41_exit_hibernate); + MODULE_DESCRIPTION("CS35L41 library"); MODULE_AUTHOR("David Rhodes, Cirrus Logic Inc, david.rhodes@cirrus.com"); MODULE_AUTHOR("Lucas Tanure, Cirrus Logic Inc, tanureal@opensource.cirrus.com"); diff --git a/sound/soc/codecs/cs35l41.c b/sound/soc/codecs/cs35l41.c index 5f0eca229dd3..0400c6e091d5 100644 --- a/sound/soc/codecs/cs35l41.c +++ b/sound/soc/codecs/cs35l41.c @@ -1349,65 +1349,6 @@ static int __maybe_unused cs35l41_runtime_suspend(struct device *dev) return 0; }
-static void cs35l41_wait_for_pwrmgt_sts(struct cs35l41_private *cs35l41) -{ - const int pwrmgt_retries = 10; - unsigned int sts; - int i, ret; - - for (i = 0; i < pwrmgt_retries; i++) { - ret = regmap_read(cs35l41->regmap, CS35L41_PWRMGT_STS, &sts); - if (ret) - dev_err(cs35l41->dev, "Failed to read PWRMGT_STS: %d\n", ret); - else if (!(sts & CS35L41_WR_PEND_STS_MASK)) - return; - - udelay(20); - } - - dev_err(cs35l41->dev, "Timed out reading PWRMGT_STS\n"); -} - -static int cs35l41_exit_hibernate(struct cs35l41_private *cs35l41) -{ - const int wake_retries = 20; - const int sleep_retries = 5; - int ret, i, j; - - for (i = 0; i < sleep_retries; i++) { - dev_dbg(cs35l41->dev, "Exit hibernate\n"); - - for (j = 0; j < wake_retries; j++) { - ret = cs35l41_set_cspl_mbox_cmd(cs35l41->dev, cs35l41->regmap, - CSPL_MBOX_CMD_OUT_OF_HIBERNATE); - if (!ret) - break; - - usleep_range(100, 200); - } - - if (j < wake_retries) { - dev_dbg(cs35l41->dev, "Wake success at cycle: %d\n", j); - return 0; - } - - dev_err(cs35l41->dev, "Wake failed, re-enter hibernate: %d\n", ret); - - cs35l41_wait_for_pwrmgt_sts(cs35l41); - regmap_write(cs35l41->regmap, CS35L41_WAKESRC_CTL, 0x0088); - - cs35l41_wait_for_pwrmgt_sts(cs35l41); - regmap_write(cs35l41->regmap, CS35L41_WAKESRC_CTL, 0x0188); - - cs35l41_wait_for_pwrmgt_sts(cs35l41); - regmap_write(cs35l41->regmap, CS35L41_PWRMGT_CTL, 0x3); - } - - dev_err(cs35l41->dev, "Timed out waking device\n"); - - return -ETIMEDOUT; -} - static int __maybe_unused cs35l41_runtime_resume(struct device *dev) { struct cs35l41_private *cs35l41 = dev_get_drvdata(dev); @@ -1420,7 +1361,7 @@ static int __maybe_unused cs35l41_runtime_resume(struct device *dev)
regcache_cache_only(cs35l41->regmap, false);
- ret = cs35l41_exit_hibernate(cs35l41); + ret = cs35l41_exit_hibernate(cs35l41->dev, cs35l41->regmap); if (ret) return ret;