From 04ff40a983e864b586f189b4c3503b6f61263643 Mon Sep 17 00:00:00 2001 From: Richard Fitzgerald Date: Mon, 5 Feb 2018 11:38:17 +0000 Subject: ASoC: wm_adsp: Don't init cache from DSP memory if control is write-only For controls marked write-only don't initialize the cache from the content of the DSP memory. We stil need the cache for any new data that is written to this control, and we need to return something for a read of the ALSA control because most user-side code assumes all ALSA controls are readable. The cache is already created zero- filled so the only change needed is to skip populating it from DSP memory if the control isn't readable. Signed-off-by: Richard Fitzgerald Signed-off-by: Mark Brown --- sound/soc/codecs/wm_adsp.c | 13 ++++++++++--- 1 file changed, 10 insertions(+), 3 deletions(-) (limited to 'sound/soc/codecs/wm_adsp.c') diff --git a/sound/soc/codecs/wm_adsp.c b/sound/soc/codecs/wm_adsp.c index 66e32f5d2917..0060aeb63a9f 100644 --- a/sound/soc/codecs/wm_adsp.c +++ b/sound/soc/codecs/wm_adsp.c @@ -1237,9 +1237,16 @@ static int wm_coeff_init_control_caches(struct wm_adsp *dsp) if (ctl->flags & WMFW_CTL_FLAG_VOLATILE) continue; - ret = wm_coeff_read_control(ctl, ctl->cache, ctl->len); - if (ret < 0) - return ret; + /* + * For readable controls populate the cache from the DSP memory. + * For non-readable controls the cache was zero-filled when + * created so we don't need to do anything. + */ + if (!ctl->flags || (ctl->flags & WMFW_CTL_FLAG_READABLE)) { + ret = wm_coeff_read_control(ctl, ctl->cache, ctl->len); + if (ret < 0) + return ret; + } } return 0; -- cgit v1.2.3 From 61fc060c40e6b92350c08a210619fc7d93c61e42 Mon Sep 17 00:00:00 2001 From: Charles Keepax Date: Mon, 26 Feb 2018 10:49:47 +0000 Subject: ASoC: wm_adsp: Support streams which can start/stop with DSP active Clear the buffer data structure on each trigger start such that the buffer is in a sensible state even if the DSP itself didn't restart. This is necessary to support voice control streams which can trigger multiple times without reloading the firmware. Signed-off-by: Charles Keepax Signed-off-by: Mark Brown --- sound/soc/codecs/wm_adsp.c | 28 ++++++++++++++++++---------- 1 file changed, 18 insertions(+), 10 deletions(-) (limited to 'sound/soc/codecs/wm_adsp.c') diff --git a/sound/soc/codecs/wm_adsp.c b/sound/soc/codecs/wm_adsp.c index 0060aeb63a9f..ab91f1320ad5 100644 --- a/sound/soc/codecs/wm_adsp.c +++ b/sound/soc/codecs/wm_adsp.c @@ -3258,6 +3258,13 @@ static int wm_adsp_buffer_populate(struct wm_adsp_compr_buf *buf) return 0; } +static void wm_adsp_buffer_clear(struct wm_adsp_compr_buf *buf) +{ + buf->irq_count = 0xFFFFFFFF; + buf->read_index = -1; + buf->avail = 0; +} + static int wm_adsp_buffer_init(struct wm_adsp *dsp) { struct wm_adsp_compr_buf *buf; @@ -3268,8 +3275,8 @@ static int wm_adsp_buffer_init(struct wm_adsp *dsp) return -ENOMEM; buf->dsp = dsp; - buf->read_index = -1; - buf->irq_count = 0xFFFFFFFF; + + wm_adsp_buffer_clear(buf); ret = wm_adsp_buffer_locate(buf); if (ret < 0) { @@ -3327,16 +3334,17 @@ int wm_adsp_compr_trigger(struct snd_compr_stream *stream, int cmd) switch (cmd) { case SNDRV_PCM_TRIGGER_START: - if (wm_adsp_compr_attached(compr)) - break; - - ret = wm_adsp_compr_attach(compr); - if (ret < 0) { - adsp_err(dsp, "Failed to link buffer and stream: %d\n", - ret); - break; + if (!wm_adsp_compr_attached(compr)) { + ret = wm_adsp_compr_attach(compr); + if (ret < 0) { + adsp_err(dsp, "Failed to link buffer and stream: %d\n", + ret); + 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), -- cgit v1.2.3