alsa-devel.alsa-project.org archive mirror
 help / color / mirror / Atom feed
* [alsa-devel] [PATCH 1/4] ASoC: wm_adsp: Correct cache handling of new kernel control API
@ 2020-01-14 16:18 Charles Keepax
  2020-01-14 16:18 ` [alsa-devel] [PATCH 2/4] ASoC: madera: Correct DMIC only input hook ups Charles Keepax
                   ` (3 more replies)
  0 siblings, 4 replies; 8+ messages in thread
From: Charles Keepax @ 2020-01-14 16:18 UTC (permalink / raw)
  To: broonie; +Cc: li.xu, patches, alsa-devel, lgirdwood, david.rhodes

The recently added API that exposes firmware mixer controls to the
kernel is missing cache handling and all writes bypass the cache, this
obviously causes the cache to get out of sync with the hardware. Factor
out the cache handling into two new helper functions and call those from
both the normal ALSA control handlers and the new kernel API.

Fixes: eb65ccdb0836 ("ASoC: wm_adsp: Expose mixer control API")
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
---
 sound/soc/codecs/wm_adsp.c | 98 ++++++++++++++++++++++++----------------------
 1 file changed, 51 insertions(+), 47 deletions(-)

diff --git a/sound/soc/codecs/wm_adsp.c b/sound/soc/codecs/wm_adsp.c
index 2a9b610f6d435..d3d32b501acae 100644
--- a/sound/soc/codecs/wm_adsp.c
+++ b/sound/soc/codecs/wm_adsp.c
@@ -1030,8 +1030,8 @@ static int wm_coeff_write_acked_control(struct wm_coeff_ctl *ctl,
 	return -ETIMEDOUT;
 }
 
-static int wm_coeff_write_control(struct wm_coeff_ctl *ctl,
-				  const void *buf, size_t len)
+static int wm_coeff_write_ctrl_raw(struct wm_coeff_ctl *ctl,
+				   const void *buf, size_t len)
 {
 	struct wm_adsp *dsp = ctl->dsp;
 	void *scratch;
@@ -1061,6 +1061,23 @@ static int wm_coeff_write_control(struct wm_coeff_ctl *ctl,
 	return 0;
 }
 
+static int wm_coeff_write_ctrl(struct wm_coeff_ctl *ctl,
+			       const void *buf, size_t len)
+{
+	int ret = 0;
+
+	if (ctl->flags & WMFW_CTL_FLAG_VOLATILE)
+		ret = -EPERM;
+	else if (buf != ctl->cache)
+		memcpy(ctl->cache, buf, len);
+
+	ctl->set = 1;
+	if (ctl->enabled && ctl->dsp->running)
+		ret = wm_coeff_write_ctrl_raw(ctl, buf, len);
+
+	return ret;
+}
+
 static int wm_coeff_put(struct snd_kcontrol *kctl,
 			struct snd_ctl_elem_value *ucontrol)
 {
@@ -1071,16 +1088,7 @@ static int wm_coeff_put(struct snd_kcontrol *kctl,
 	int ret = 0;
 
 	mutex_lock(&ctl->dsp->pwr_lock);
-
-	if (ctl->flags & WMFW_CTL_FLAG_VOLATILE)
-		ret = -EPERM;
-	else
-		memcpy(ctl->cache, p, ctl->len);
-
-	ctl->set = 1;
-	if (ctl->enabled && ctl->dsp->running)
-		ret = wm_coeff_write_control(ctl, p, ctl->len);
-
+	ret = wm_coeff_write_ctrl(ctl, p, ctl->len);
 	mutex_unlock(&ctl->dsp->pwr_lock);
 
 	return ret;
@@ -1096,15 +1104,10 @@ static int wm_coeff_tlv_put(struct snd_kcontrol *kctl,
 
 	mutex_lock(&ctl->dsp->pwr_lock);
 
-	if (copy_from_user(ctl->cache, bytes, size)) {
+	if (copy_from_user(ctl->cache, bytes, size))
 		ret = -EFAULT;
-	} else {
-		ctl->set = 1;
-		if (ctl->enabled && ctl->dsp->running)
-			ret = wm_coeff_write_control(ctl, ctl->cache, size);
-		else if (ctl->flags & WMFW_CTL_FLAG_VOLATILE)
-			ret = -EPERM;
-	}
+	else
+		ret = wm_coeff_write_ctrl(ctl, ctl->cache, size);
 
 	mutex_unlock(&ctl->dsp->pwr_lock);
 
@@ -1135,8 +1138,8 @@ static int wm_coeff_put_acked(struct snd_kcontrol *kctl,
 	return ret;
 }
 
-static int wm_coeff_read_control(struct wm_coeff_ctl *ctl,
-				 void *buf, size_t len)
+static int wm_coeff_read_ctrl_raw(struct wm_coeff_ctl *ctl,
+				  void *buf, size_t len)
 {
 	struct wm_adsp *dsp = ctl->dsp;
 	void *scratch;
@@ -1166,29 +1169,37 @@ static int wm_coeff_read_control(struct wm_coeff_ctl *ctl,
 	return 0;
 }
 
-static int wm_coeff_get(struct snd_kcontrol *kctl,
-			struct snd_ctl_elem_value *ucontrol)
+static int wm_coeff_read_ctrl(struct wm_coeff_ctl *ctl, void *buf, size_t len)
 {
-	struct soc_bytes_ext *bytes_ext =
-		(struct soc_bytes_ext *)kctl->private_value;
-	struct wm_coeff_ctl *ctl = bytes_ext_to_ctl(bytes_ext);
-	char *p = ucontrol->value.bytes.data;
 	int ret = 0;
 
-	mutex_lock(&ctl->dsp->pwr_lock);
-
 	if (ctl->flags & WMFW_CTL_FLAG_VOLATILE) {
 		if (ctl->enabled && ctl->dsp->running)
-			ret = wm_coeff_read_control(ctl, p, ctl->len);
+			return wm_coeff_read_ctrl_raw(ctl, buf, len);
 		else
-			ret = -EPERM;
+			return -EPERM;
 	} else {
 		if (!ctl->flags && ctl->enabled && ctl->dsp->running)
-			ret = wm_coeff_read_control(ctl, ctl->cache, ctl->len);
+			ret = wm_coeff_read_ctrl_raw(ctl, ctl->cache, ctl->len);
 
-		memcpy(p, ctl->cache, ctl->len);
+		if (buf != ctl->cache)
+			memcpy(buf, ctl->cache, len);
 	}
 
+	return ret;
+}
+
+static int wm_coeff_get(struct snd_kcontrol *kctl,
+			struct snd_ctl_elem_value *ucontrol)
+{
+	struct soc_bytes_ext *bytes_ext =
+		(struct soc_bytes_ext *)kctl->private_value;
+	struct wm_coeff_ctl *ctl = bytes_ext_to_ctl(bytes_ext);
+	char *p = ucontrol->value.bytes.data;
+	int ret;
+
+	mutex_lock(&ctl->dsp->pwr_lock);
+	ret = wm_coeff_read_ctrl(ctl, p, ctl->len);
 	mutex_unlock(&ctl->dsp->pwr_lock);
 
 	return ret;
@@ -1204,15 +1215,7 @@ static int wm_coeff_tlv_get(struct snd_kcontrol *kctl,
 
 	mutex_lock(&ctl->dsp->pwr_lock);
 
-	if (ctl->flags & WMFW_CTL_FLAG_VOLATILE) {
-		if (ctl->enabled && ctl->dsp->running)
-			ret = wm_coeff_read_control(ctl, ctl->cache, size);
-		else
-			ret = -EPERM;
-	} else {
-		if (!ctl->flags && ctl->enabled && ctl->dsp->running)
-			ret = wm_coeff_read_control(ctl, ctl->cache, size);
-	}
+	ret = wm_coeff_read_ctrl_raw(ctl, ctl->cache, size);
 
 	if (!ret && copy_to_user(bytes, ctl->cache, size))
 		ret = -EFAULT;
@@ -1340,7 +1343,7 @@ static int wm_coeff_init_control_caches(struct wm_adsp *dsp)
 		 * 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);
+			ret = wm_coeff_read_ctrl_raw(ctl, ctl->cache, ctl->len);
 			if (ret < 0)
 				return ret;
 		}
@@ -1358,7 +1361,8 @@ static int wm_coeff_sync_controls(struct wm_adsp *dsp)
 		if (!ctl->enabled)
 			continue;
 		if (ctl->set && !(ctl->flags & WMFW_CTL_FLAG_VOLATILE)) {
-			ret = wm_coeff_write_control(ctl, ctl->cache, ctl->len);
+			ret = wm_coeff_write_ctrl_raw(ctl, ctl->cache,
+						      ctl->len);
 			if (ret < 0)
 				return ret;
 		}
@@ -2048,7 +2052,7 @@ int wm_adsp_write_ctl(struct wm_adsp *dsp, const char *name, int type,
 	if (len > ctl->len)
 		return -EINVAL;
 
-	ret = wm_coeff_write_control(ctl, buf, len);
+	ret = wm_coeff_write_ctrl(ctl, buf, len);
 
 	kcontrol = snd_soc_card_get_kcontrol(dsp->component->card, ctl->name);
 	snd_ctl_notify(dsp->component->card->snd_card,
@@ -2070,7 +2074,7 @@ int wm_adsp_read_ctl(struct wm_adsp *dsp, const char *name, int type,
 	if (len > ctl->len)
 		return -EINVAL;
 
-	return wm_coeff_read_control(ctl, buf, len);
+	return wm_coeff_read_ctrl(ctl, buf, len);
 }
 EXPORT_SYMBOL_GPL(wm_adsp_read_ctl);
 
-- 
2.11.0

_______________________________________________
Alsa-devel mailing list
Alsa-devel@alsa-project.org
https://mailman.alsa-project.org/mailman/listinfo/alsa-devel

^ permalink raw reply related	[flat|nested] 8+ messages in thread
end of thread, other threads:[~2020-01-17 15:55 UTC | newest]

Thread overview: 8+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-01-14 16:18 [alsa-devel] [PATCH 1/4] ASoC: wm_adsp: Correct cache handling of new kernel control API Charles Keepax
2020-01-14 16:18 ` [alsa-devel] [PATCH 2/4] ASoC: madera: Correct DMIC only input hook ups Charles Keepax
2020-01-17 11:02   ` Charles Keepax
2020-01-14 16:18 ` [alsa-devel] [PATCH 3/4] ASoC: madera: Correct error path handling in madera_out1_demux_put Charles Keepax
2020-01-17 15:44   ` [alsa-devel] Applied "ASoC: madera: Correct error path handling in madera_out1_demux_put" to the asoc tree Mark Brown
2020-01-14 16:18 ` [alsa-devel] [PATCH 4/4] ASoC: madera: Update handling of DAPM routes for mono muxed outputs Charles Keepax
2020-01-17 15:44   ` [alsa-devel] Applied "ASoC: madera: Update handling of DAPM routes for mono muxed outputs" to the asoc tree Mark Brown
2020-01-17 15:44 ` [alsa-devel] Applied "ASoC: wm_adsp: Correct cache handling of new kernel control API" " Mark Brown

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).