commit 9d0d8e47af7f243afe9f090caa4decb510a6d385
author Preetam Singh Ranawat <apranawat@codeaurora.org> Mon Jul 15 12:27:25 2019 +0530
committer Preetam Singh Ranawat <apranawat@codeaurora.org> Tue Jul 16 14:42:54 2019 +0530
tree ebeb7d559465002ef5c52e600e4a01aee47ae54f
parent 007e5e9cd5028f9890d5995a3621a01ad7dd6839

audio: limit sampling rates to 192Khz for WCD9380 varient.

 -WCD9380 supports sampling rates upto 192Khz, hence limit
  SR > 192Khz to 192Khz.

Change-Id: I1435919320d784bedf4147a9e467867d777b594b

hal/audio_extn/audio_extn.h

diff --git a/hal/audio_extn/audio_extn.h b/hal/audio_extn/audio_extn.h
index b7942ae..17e0720 100644
--- a/hal/audio_extn/audio_extn.h
+++ b/hal/audio_extn/audio_extn.h
@@ -854,6 +854,7 @@
 int b64encode(uint8_t *inp, int ilen, char* outp);
 int read_line_from_file(const char *path, char *buf, size_t count);
 int audio_extn_utils_get_codec_version(const char *snd_card_name, int card_num, char *codec_version);
+int audio_extn_utils_get_codec_variant(int card_num, char *codec_variant);
 audio_format_t alsa_format_to_hal(uint32_t alsa_format);
 uint32_t hal_format_to_alsa(audio_format_t hal_format);
 audio_format_t pcm_format_to_hal(uint32_t pcm_format);

hal/audio_extn/utils.c

diff --git a/hal/audio_extn/utils.c b/hal/audio_extn/utils.c
index d66b368..0ea7d94 100644
--- a/hal/audio_extn/utils.c
+++ b/hal/audio_extn/utils.c
@@ -1772,6 +1772,27 @@
     return 0;
 }
 
+int audio_extn_utils_get_codec_variant(int card_num,
+                            char *codec_variant)
+{
+    char procfs_path[50];
+    FILE *fp;
+    snprintf(procfs_path, sizeof(procfs_path),
+             "/proc/asound/card%d/codecs/wcd938x/variant", card_num);
+    if ((fp = fopen(procfs_path, "r")) == NULL) {
+        snprintf(procfs_path, sizeof(procfs_path),
+                 "/proc/asound/card%d/codecs/wcd937x/variant", card_num);
+        if ((fp = fopen(procfs_path, "r")) == NULL) {
+            ALOGE("%s: ERROR. cannot open %s", __func__, procfs_path);
+            return -ENOENT;
+        }
+    }
+    fgets(codec_variant, CODEC_VARIANT_MAX_LENGTH, fp);
+    fclose(fp);
+    ALOGD("%s: codec variant is %s", __func__, codec_variant);
+    return 0;
+}
+
 
 #ifdef AUDIO_EXTERNAL_HDMI_ENABLED