From: Sugar Zhang sugar.zhang@rock-chips.com
stable inclusion from linux-4.19.207 commit 34a2e6704d55cec79c81bc84b8494430821db01f
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[ Upstream commit 53ca9b9777b95cdd689181d7c547e38dc79adad0 ]
API 'set_fmt' maybe called when PD is off, in the situation, any register access will hang the system. so, enable PD before r/w register.
Signed-off-by: Sugar Zhang sugar.zhang@rock-chips.com Link: https://lore.kernel.org/r/1629950520-14190-4-git-send-email-sugar.zhang@rock... Signed-off-by: Mark Brown broonie@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- sound/soc/rockchip/rockchip_i2s.c | 19 ++++++++++++++----- 1 file changed, 14 insertions(+), 5 deletions(-)
diff --git a/sound/soc/rockchip/rockchip_i2s.c b/sound/soc/rockchip/rockchip_i2s.c index b86f76c3598cd..cab381c9dea1c 100644 --- a/sound/soc/rockchip/rockchip_i2s.c +++ b/sound/soc/rockchip/rockchip_i2s.c @@ -189,7 +189,9 @@ static int rockchip_i2s_set_fmt(struct snd_soc_dai *cpu_dai, { struct rk_i2s_dev *i2s = to_info(cpu_dai); unsigned int mask = 0, val = 0; + int ret = 0;
+ pm_runtime_get_sync(cpu_dai->dev); mask = I2S_CKR_MSS_MASK; switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { case SND_SOC_DAIFMT_CBS_CFS: @@ -202,7 +204,8 @@ static int rockchip_i2s_set_fmt(struct snd_soc_dai *cpu_dai, i2s->is_master_mode = false; break; default: - return -EINVAL; + ret = -EINVAL; + goto err_pm_put; }
regmap_update_bits(i2s->regmap, I2S_CKR, mask, val); @@ -216,7 +219,8 @@ static int rockchip_i2s_set_fmt(struct snd_soc_dai *cpu_dai, val = I2S_CKR_CKP_POS; break; default: - return -EINVAL; + ret = -EINVAL; + goto err_pm_put; }
regmap_update_bits(i2s->regmap, I2S_CKR, mask, val); @@ -239,7 +243,8 @@ static int rockchip_i2s_set_fmt(struct snd_soc_dai *cpu_dai, val = I2S_TXCR_TFS_PCM | I2S_TXCR_PBM_MODE(1); break; default: - return -EINVAL; + ret = -EINVAL; + goto err_pm_put; }
regmap_update_bits(i2s->regmap, I2S_TXCR, mask, val); @@ -262,12 +267,16 @@ static int rockchip_i2s_set_fmt(struct snd_soc_dai *cpu_dai, val = I2S_RXCR_TFS_PCM | I2S_RXCR_PBM_MODE(1); break; default: - return -EINVAL; + ret = -EINVAL; + goto err_pm_put; }
regmap_update_bits(i2s->regmap, I2S_RXCR, mask, val);
- return 0; +err_pm_put: + pm_runtime_put(cpu_dai->dev); + + return ret; }
static int rockchip_i2s_hw_params(struct snd_pcm_substream *substream,