[alsa-devel] [PATCH v2 2/2] ASoC: adau17x1: Implemented safeload support
Robert Rosengren
robert.rosengren at axis.com
Mon Aug 13 09:33:59 CEST 2018
From: Danny Smith <dannys at axis.com>
Safeload support has been implemented which is used
when updating for instance filter parameters using
alsa controls. Without safeload support audio can
become distorted during update.
Signed-off-by: Danny Smith <dannys at axis.com>
Signed-off-by: Robert Rosengren <robertr at axis.com>
---
sound/soc/codecs/adau17x1.c | 68 +++++++++++++++++++++++++++++++++++++++++++--
1 file changed, 66 insertions(+), 2 deletions(-)
diff --git a/sound/soc/codecs/adau17x1.c b/sound/soc/codecs/adau17x1.c
index 2f2afb4c0c88..6d0b2261c959 100644
--- a/sound/soc/codecs/adau17x1.c
+++ b/sound/soc/codecs/adau17x1.c
@@ -26,6 +26,10 @@
#include "adau17x1.h"
#include "adau-utils.h"
+#define ADAU17X1_SAFELOAD_TARGET_ADDRESS 0x0006
+#define ADAU17X1_SAFELOAD_TRIGGER 0x0007
+#define ADAU17X1_SAFELOAD_DATA(i) (0x0001 + (i))
+
static const char * const adau17x1_capture_mixer_boost_text[] = {
"Normal operation", "Boost Level 1", "Boost Level 2", "Boost Level 3",
};
@@ -328,6 +332,17 @@ static bool adau17x1_has_dsp(struct adau *adau)
}
}
+static bool adau17x1_has_safeload(struct adau *adau)
+{
+ switch (adau->type) {
+ case ADAU1761:
+ case ADAU1781:
+ return true;
+ default:
+ return false;
+ }
+}
+
static int adau17x1_set_dai_pll(struct snd_soc_dai *dai, int pll_id,
int source, unsigned int freq_in, unsigned int freq_out)
{
@@ -958,6 +973,50 @@ int adau17x1_resume(struct snd_soc_component *component)
}
EXPORT_SYMBOL_GPL(adau17x1_resume);
+static int adau17x1_safeload(struct sigmadsp *sigmadsp, unsigned int addr,
+ const uint8_t bytes[], size_t len)
+{
+ uint8_t buf[4];
+ unsigned int i;
+ int ret;
+
+ /* target address is offset by 1 */
+ unsigned int addr_offset = addr - 1;
+
+ /* write safeload addresses */
+ for (i = 0; i < len / 4; i++) {
+ memcpy(buf, bytes + i * 4, 4);
+ ret = regmap_raw_write(sigmadsp->control_data,
+ ADAU17X1_SAFELOAD_DATA(i), buf, 4);
+ if (ret < 0)
+ return ret;
+ }
+
+ /* write target address */
+ buf[0] = (addr_offset >> 24) & 0xff;
+ buf[1] = (addr_offset >> 16) & 0xff;
+ buf[2] = (addr_offset >> 8) & 0xff;
+ buf[3] = (addr_offset) & 0xff;
+ ret = regmap_raw_write(sigmadsp->control_data,
+ ADAU17X1_SAFELOAD_TARGET_ADDRESS, buf, 4);
+ if (ret < 0)
+ return ret;
+
+ /* write nbr of words to trigger address */
+ buf[0] = 0x00;
+ buf[1] = 0x00;
+ buf[2] = 0x00;
+ buf[3] = i & 0xff;
+ ret = regmap_raw_write(sigmadsp->control_data,
+ ADAU17X1_SAFELOAD_TRIGGER, buf, 4);
+
+ return ret;
+}
+
+static const struct sigmadsp_ops adau17x1_sigmadsp_ops = {
+ .safeload = adau17x1_safeload,
+};
+
int adau17x1_probe(struct device *dev, struct regmap *regmap,
enum adau17x1_type type, void (*switch_mode)(struct device *dev),
const char *firmware_name)
@@ -1003,8 +1062,13 @@ int adau17x1_probe(struct device *dev, struct regmap *regmap,
dev_set_drvdata(dev, adau);
if (firmware_name) {
- adau->sigmadsp = devm_sigmadsp_init_regmap(dev, regmap, NULL,
- firmware_name);
+ if (adau17x1_has_safeload(adau)) {
+ adau->sigmadsp = devm_sigmadsp_init_regmap(dev, regmap,
+ &adau17x1_sigmadsp_ops, firmware_name);
+ } else {
+ adau->sigmadsp = devm_sigmadsp_init_regmap(dev, regmap,
+ NULL, firmware_name);
+ }
if (IS_ERR(adau->sigmadsp)) {
dev_warn(dev, "Could not find firmware file: %ld\n",
PTR_ERR(adau->sigmadsp));
--
2.11.0
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