From 639e5eb3c7d67e407f2a71fccd95323751398f6f Mon Sep 17 00:00:00 2001 From: Charles Keepax Date: Tue, 19 Mar 2019 11:52:04 +0000 Subject: [PATCH 1/4] ASoC: wm_adsp: Correct handling of compressed streams that restart Previously support was added to allow streams to be stopped and started again without the DSP being power cycled and this was done by clearing the buffer state in trigger start. Another supported use-case is using the DSP for a trigger event then opening the compressed stream later to receive the audio, unfortunately clearing the buffer state in trigger start destroys the data received from such a trigger. Correct this issue by moving the call to wm_adsp_buffer_clear to be in trigger stop instead. Fixes: 61fc060c40e6 ("ASoC: wm_adsp: Support streams which can start/stop with DSP active") Signed-off-by: Charles Keepax Signed-off-by: Mark Brown --- sound/soc/codecs/wm_adsp.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/sound/soc/codecs/wm_adsp.c b/sound/soc/codecs/wm_adsp.c index b93fdc8d2d6f..0de36b7eeeb2 100644 --- a/sound/soc/codecs/wm_adsp.c +++ b/sound/soc/codecs/wm_adsp.c @@ -3571,8 +3571,6 @@ int wm_adsp_compr_trigger(struct snd_compr_stream *stream, int cmd) if (ret < 0) break; - wm_adsp_buffer_clear(compr->buf); - /* Trigger the IRQ at one fragment of data */ ret = wm_adsp_buffer_write(compr->buf, HOST_BUFFER_FIELD(high_water_mark), @@ -3584,6 +3582,7 @@ int wm_adsp_compr_trigger(struct snd_compr_stream *stream, int cmd) } break; case SNDRV_PCM_TRIGGER_STOP: + wm_adsp_buffer_clear(compr->buf); break; default: ret = -EINVAL; From 48ead31ce247dc8c0b01ad99d1a97da35421493b Mon Sep 17 00:00:00 2001 From: Charles Keepax Date: Tue, 19 Mar 2019 11:52:05 +0000 Subject: [PATCH 2/4] ASoC: wm_adsp: Correct error messages in wm_adsp_buffer_get_error During recent logging improvements it seems two error messages lost their updates during patch application/rebasing. Add these back in. Fixes: 0d3fba3e7a56 ("ASoC: wm_adsp: Improve logging messages") Signed-off-by: Charles Keepax Signed-off-by: Mark Brown --- sound/soc/codecs/wm_adsp.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/sound/soc/codecs/wm_adsp.c b/sound/soc/codecs/wm_adsp.c index 0de36b7eeeb2..b3348a213c18 100644 --- a/sound/soc/codecs/wm_adsp.c +++ b/sound/soc/codecs/wm_adsp.c @@ -3535,11 +3535,11 @@ static int wm_adsp_buffer_get_error(struct wm_adsp_compr_buf *buf) ret = wm_adsp_buffer_read(buf, HOST_BUFFER_FIELD(error), &buf->error); if (ret < 0) { - adsp_err(buf->dsp, "Failed to check buffer error: %d\n", ret); + compr_err(buf, "Failed to check buffer error: %d\n", ret); return ret; } if (buf->error != 0) { - adsp_err(buf->dsp, "Buffer error occurred: %d\n", buf->error); + compr_err(buf, "Buffer error occurred: %d\n", buf->error); return -EIO; } From a2225a6d155fcb247fe4c6d87f7c91807462966d Mon Sep 17 00:00:00 2001 From: Charles Keepax Date: Tue, 19 Mar 2019 11:52:06 +0000 Subject: [PATCH 3/4] ASoC: wm_adsp: Add locking to wm_adsp2_bus_error Best to lock across handling the bus error to ensure the DSP doesn't change power state as we are reading the status registers. Signed-off-by: Charles Keepax Signed-off-by: Mark Brown --- sound/soc/codecs/wm_adsp.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff --git a/sound/soc/codecs/wm_adsp.c b/sound/soc/codecs/wm_adsp.c index b3348a213c18..c19a8a041d4d 100644 --- a/sound/soc/codecs/wm_adsp.c +++ b/sound/soc/codecs/wm_adsp.c @@ -3922,11 +3922,13 @@ irqreturn_t wm_adsp2_bus_error(struct wm_adsp *dsp) struct regmap *regmap = dsp->regmap; int ret = 0; + mutex_lock(&dsp->pwr_lock); + ret = regmap_read(regmap, dsp->base + ADSP2_LOCK_REGION_CTRL, &val); if (ret) { adsp_err(dsp, "Failed to read Region Lock Ctrl register: %d\n", ret); - return IRQ_HANDLED; + goto error; } if (val & ADSP2_WDT_TIMEOUT_STS_MASK) { @@ -3945,7 +3947,7 @@ irqreturn_t wm_adsp2_bus_error(struct wm_adsp *dsp) adsp_err(dsp, "Failed to read Bus Err Addr register: %d\n", ret); - return IRQ_HANDLED; + goto error; } adsp_err(dsp, "bus error address = 0x%x\n", @@ -3958,7 +3960,7 @@ irqreturn_t wm_adsp2_bus_error(struct wm_adsp *dsp) adsp_err(dsp, "Failed to read Pmem Xmem Err Addr register: %d\n", ret); - return IRQ_HANDLED; + goto error; } adsp_err(dsp, "xmem error address = 0x%x\n", @@ -3971,6 +3973,9 @@ irqreturn_t wm_adsp2_bus_error(struct wm_adsp *dsp) regmap_update_bits(regmap, dsp->base + ADSP2_LOCK_REGION_CTRL, ADSP2_CTRL_ERR_EINT, ADSP2_CTRL_ERR_EINT); +error: + mutex_unlock(&dsp->pwr_lock); + return IRQ_HANDLED; } EXPORT_SYMBOL_GPL(wm_adsp2_bus_error); From a2bcbc1b9ac2f982a438081a9f1b5d823332d514 Mon Sep 17 00:00:00 2001 From: Charles Keepax Date: Tue, 19 Mar 2019 11:52:07 +0000 Subject: [PATCH 4/4] ASoC: wm_adsp: Shutdown any compressed streams on DSP watchdog timeout If a watchdog timeout is received from the DSP it is safe to assume the DSP is not functioning anymore and as such any active compressed streams should be put into an error state. Signed-off-by: Charles Keepax Signed-off-by: Mark Brown --- sound/soc/codecs/wm_adsp.c | 21 +++++++++++++++++++++ sound/soc/codecs/wm_adsp.h | 1 + 2 files changed, 22 insertions(+) diff --git a/sound/soc/codecs/wm_adsp.c b/sound/soc/codecs/wm_adsp.c index c19a8a041d4d..5608ed5decca 100644 --- a/sound/soc/codecs/wm_adsp.c +++ b/sound/soc/codecs/wm_adsp.c @@ -2905,6 +2905,8 @@ int wm_adsp2_event(struct snd_soc_dapm_widget *w, if (wm_adsp_fw[dsp->fw].num_caps != 0) wm_adsp_buffer_free(dsp); + dsp->fatal_error = false; + mutex_unlock(&dsp->pwr_lock); adsp_dbg(dsp, "Execution stopped\n"); @@ -3000,6 +3002,9 @@ static int wm_adsp_compr_attach(struct wm_adsp_compr *compr) { struct wm_adsp_compr_buf *buf = NULL, *tmp; + if (compr->dsp->fatal_error) + return -EINVAL; + list_for_each_entry(tmp, &compr->dsp->buffer_list, list) { if (!tmp->name || !strcmp(compr->name, tmp->name)) { buf = tmp; @@ -3916,6 +3921,21 @@ int wm_adsp2_lock(struct wm_adsp *dsp, unsigned int lock_regions) } EXPORT_SYMBOL_GPL(wm_adsp2_lock); +static void wm_adsp_fatal_error(struct wm_adsp *dsp) +{ + struct wm_adsp_compr *compr; + + dsp->fatal_error = true; + + list_for_each_entry(compr, &dsp->compr_list, list) { + if (compr->stream) { + snd_compr_stop_error(compr->stream, + SNDRV_PCM_STATE_XRUN); + snd_compr_fragment_elapsed(compr->stream); + } + } +} + irqreturn_t wm_adsp2_bus_error(struct wm_adsp *dsp) { unsigned int val; @@ -3934,6 +3954,7 @@ irqreturn_t wm_adsp2_bus_error(struct wm_adsp *dsp) if (val & ADSP2_WDT_TIMEOUT_STS_MASK) { adsp_err(dsp, "watchdog timeout error\n"); wm_adsp_stop_watchdog(dsp); + wm_adsp_fatal_error(dsp); } if (val & (ADSP2_SLAVE_ERR_MASK | ADSP2_REGION_LOCK_ERR_MASK)) { diff --git a/sound/soc/codecs/wm_adsp.h b/sound/soc/codecs/wm_adsp.h index 59e07ad16329..8f09b4419a91 100644 --- a/sound/soc/codecs/wm_adsp.h +++ b/sound/soc/codecs/wm_adsp.h @@ -85,6 +85,7 @@ struct wm_adsp { bool preloaded; bool booted; bool running; + bool fatal_error; struct list_head ctl_list;