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-rw-r--r--target/linux/brcm2708/patches-4.19/950-0442-Fixed-48k-timing-issue.patch95
1 files changed, 95 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.19/950-0442-Fixed-48k-timing-issue.patch b/target/linux/brcm2708/patches-4.19/950-0442-Fixed-48k-timing-issue.patch
new file mode 100644
index 0000000000..541e18ac06
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.19/950-0442-Fixed-48k-timing-issue.patch
@@ -0,0 +1,95 @@
+From 539e2eef7dbfb58ab028a5530430611973dd4c84 Mon Sep 17 00:00:00 2001
+From: IQaudIO <gordon@iqaudio.com>
+Date: Thu, 6 Jun 2019 10:20:55 +0100
+Subject: [PATCH] Fixed 48k timing issue
+
+---
+ sound/soc/bcm/iqaudio-codec.c | 33 ++++++++++++++++++++++++++++-----
+ 1 file changed, 28 insertions(+), 5 deletions(-)
+
+--- a/sound/soc/bcm/iqaudio-codec.c
++++ b/sound/soc/bcm/iqaudio-codec.c
+@@ -45,11 +45,15 @@ static int snd_rpi_iqaudio_pll_control(s
+ 0);
+ if (ret)
+ dev_err(card->dev, "Failed to bypass PLL: %d\n", ret);
++ /* Allow PLL time to bypass */
++ msleep(100);
+ } else if (SND_SOC_DAPM_EVENT_ON(event)) {
+ ret = snd_soc_dai_set_pll(codec_dai, 0, DA7213_SYSCLK_PLL, 0,
+ pll_out);
+ if (ret)
+ dev_err(card->dev, "Failed to enable PLL: %d\n", ret);
++ /* Allow PLL time to lock */
++ msleep(100);
+ }
+
+ return ret;
+@@ -71,6 +75,13 @@ static int snd_rpi_iqaudio_post_dapm_eve
+ return 0;
+ }
+
++static const struct snd_kcontrol_new dapm_controls[] = {
++ SOC_DAPM_PIN_SWITCH("HP Jack"),
++ SOC_DAPM_PIN_SWITCH("MIC Jack"),
++ SOC_DAPM_PIN_SWITCH("Onboard MIC"),
++ SOC_DAPM_PIN_SWITCH("AUX Jack"),
++};
++
+ static const struct snd_soc_dapm_widget dapm_widgets[] = {
+ SND_SOC_DAPM_HP("HP Jack", NULL),
+ SND_SOC_DAPM_MIC("MIC Jack", NULL),
+@@ -87,14 +98,14 @@ static const struct snd_soc_dapm_route a
+ {"HP Jack", NULL, "HPR"},
+ {"HP Jack", NULL, "PLL Control"},
+
+- {"AUX Jack", NULL, "AUXR"},
+- {"AUX Jack", NULL, "AUXL"},
++ {"AUXR", NULL, "AUX Jack"},
++ {"AUXL", NULL, "AUX Jack"},
+ {"AUX Jack", NULL, "PLL Control"},
+
+ /* Assume Mic1 is linked to Headset and Mic2 to on-board mic */
+- {"MIC Jack", NULL, "MIC1"},
++ {"MIC1", NULL, "MIC Jack"},
+ {"MIC Jack", NULL, "PLL Control"},
+- {"Onboard MIC", NULL, "MIC2"},
++ {"MIC2", NULL, "Onboard MIC"},
+ {"Onboard MIC", NULL, "PLL Control"},
+ };
+
+@@ -106,6 +117,16 @@ static int snd_rpi_iqaudio_codec_init(st
+ struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
+ int ret;
+
++ /*
++ * Disable AUX Jack Pin by default to prevent PLL being enabled at
++ * startup. This avoids holding the PLL to a fixed SR config for
++ * subsequent streams.
++ *
++ * This pin can still be enabled later, as required by user-space.
++ */
++ snd_soc_dapm_disable_pin(&rtd->card->dapm, "AUX Jack");
++ snd_soc_dapm_sync(&rtd->card->dapm);
++
+ /* Set bclk ratio to align with codec's BCLK rate */
+ ret = snd_soc_dai_set_bclk_ratio(cpu_dai, 64);
+ if (ret) {
+@@ -168,6 +189,8 @@ static struct snd_soc_card snd_rpi_iqaud
+ .owner = THIS_MODULE,
+ .dai_link = snd_rpi_iqaudio_codec_dai,
+ .num_links = ARRAY_SIZE(snd_rpi_iqaudio_codec_dai),
++ .controls = dapm_controls,
++ .num_controls = ARRAY_SIZE(dapm_controls),
+ .dapm_widgets = dapm_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(dapm_widgets),
+ .dapm_routes = audio_map,
+@@ -204,7 +227,7 @@ static int snd_rpi_iqaudio_codec_probe(s
+
+ if (of_property_read_string(pdev->dev.of_node,
+ "dai_stream_name", &dai->stream_name))
+- dai->stream_name = "IQaudIO CODEC HiFi v1.1";
++ dai->stream_name = "IQaudIO CODEC HiFi v1.2";
+
+ }
+