brcm2708: update to latest patches from RPi foundation

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

1 files changed, 95 insertions, 0 deletions

diff --git a/target/linux/brcm2708/patches-4.19/950-0440-Fixed-48k-timing-issue.patch b/target/linux/brcm2708/patches-4.19/950-0440-Fixed-48k-timing-issue.patch
new file mode 100644
index 0000000000..541e18ac06
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.19/950-0440-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";
+ 
+ 	}
+