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From:   Stephan Gerhold <stephan@gerhold.net>
Date:   Tue, 03 Oct 2023 15:18:23 +0200
Subject: [PATCH v2 05/14] arm64: dts: qcom: msm8916-samsung-a2015: Add
 sound and modem
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Message-Id: <20231003-msm8916-modem-v2-5-61b684be55c0@gerhold.net>
References: <20231003-msm8916-modem-v2-0-61b684be55c0@gerhold.net>
In-Reply-To: <20231003-msm8916-modem-v2-0-61b684be55c0@gerhold.net>
To:     Bjorn Andersson <andersson@kernel.org>
Cc:     Andy Gross <agross@kernel.org>,
        Konrad Dybcio <konrad.dybcio@linaro.org>,
        linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org,
        linux-kernel@vger.kernel.org, phone-devel@vger.kernel.org,
        ~postmarketos/upstreaming@lists.sr.ht,
        Bryan O'Donoghue <bryan.odonoghue@linaro.org>,
        Stephan Gerhold <stephan@gerhold.net>,
        "Lin, Meng-Bo" <linmengbo0689@protonmail.com>
Precedence: bulk

Enable sound and modem for the Samsung A2015 based devices (A3, A5, E5,
E7, Grand Max). The setup is similar to most MSM8916 devices, i.e.:

 - QDSP6 audio
 - Earpiece/headphones/microphones via digital/analog codec in
   MSM8916/PM8916
 - WWAN Internet via BAM-DMUX

except:

 - NXP TFA9895 codec for speaker on Quaternary MI2S
 - Samsung-specific audio jack detection (not supported yet)

[Lin: Add e2015 and grandmax]
Co-developed-by: "Lin, Meng-Bo" <linmengbo0689@protonmail.com>
Signed-off-by: "Lin, Meng-Bo" <linmengbo0689@protonmail.com>
Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
---
 .../dts/qcom/msm8916-samsung-a2015-common.dtsi     | 71 ++++++++++++++++++++++
 .../dts/qcom/msm8916-samsung-e2015-common.dtsi     |  4 ++
 .../boot/dts/qcom/msm8916-samsung-grandmax.dts     |  4 ++
 3 files changed, 79 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/msm8916-samsung-a2015-common.dtsi b/arch/arm64/boot/dts/qcom/msm8916-samsung-a2015-common.dtsi
index 0b29132b74e1..2937495940ea 100644
--- a/arch/arm64/boot/dts/qcom/msm8916-samsung-a2015-common.dtsi
+++ b/arch/arm64/boot/dts/qcom/msm8916-samsung-a2015-common.dtsi
@@ -1,10 +1,13 @@
 // SPDX-License-Identifier: GPL-2.0-only
 
 #include "msm8916-pm8916.dtsi"
+#include "msm8916-modem-qdsp6.dtsi"
+
 #include <dt-bindings/gpio/gpio.h>
 #include <dt-bindings/input/input.h>
 #include <dt-bindings/interrupt-controller/irq.h>
 #include <dt-bindings/pinctrl/qcom,pmic-gpio.h>
+#include <dt-bindings/sound/apq8016-lpass.h>
 
 / {
 	aliases {
@@ -196,6 +199,18 @@ vibrator: vibrator {
 	};
 };
 
+&blsp_i2c1 {
+	status = "okay";
+
+	speaker_codec: audio-codec@34 {
+		compatible = "nxp,tfa9895";
+		reg = <0x34>;
+		vddd-supply = <&pm8916_l5>;
+		sound-name-prefix = "Speaker";
+		#sound-dai-cells = <0>;
+	};
+};
+
 &blsp_i2c2 {
 	status = "okay";
 
@@ -243,6 +258,25 @@ &gpu {
 	status = "okay";
 };
 
+/*
+ * For some reason the speaker amplifier is connected to the second SD line
+ * (MI2S_2_D1) instead of the first (MI2S_2_D0). This must be configured in the
+ * device tree, otherwise audio will seemingly play fine on the wrong SD line
+ * but the speaker stays silent.
+ *
+ * When routing audio via QDSP6 (the default) the &lpass node is reserved and
+ * the definitions from &q6afedai are used. When the modem is disabled audio can
+ * be alternatively routed directly to the LPASS hardware with reduced latency.
+ * The definitions for &lpass are here for completeness to simplify changing the
+ * setup with minor changes to the DT (either manually or with DT overlays).
+ */
+&lpass {
+	dai-link@3 {
+		reg = <MI2S_QUATERNARY>;
+		qcom,playback-sd-lines = <1>;
+	};
+};
+
 &mdss {
 	status = "okay";
 };
@@ -253,6 +287,10 @@ &mdss_dsi0 {
 	pinctrl-1 = <&mdss_sleep>;
 };
 
+&mpss_mem {
+	reg = <0x0 0x86800000 0x0 0x5400000>;
+};
+
 &pm8916_resin {
 	status = "okay";
 	linux,code = <KEY_VOLUMEDOWN>;
@@ -265,6 +303,13 @@ pm8916_l17: l17 {
 	};
 };
 
+&q6afedai {
+	dai@22 {
+		reg = <QUATERNARY_MI2S_RX>;
+		qcom,sd-lines = <1>;
+	};
+};
+
 &sdhc_1 {
 	status = "okay";
 };
@@ -279,6 +324,32 @@ &sdhc_2 {
 	cd-gpios = <&tlmm 38 GPIO_ACTIVE_LOW>;
 };
 
+&sound {
+	model = "samsung-a2015";
+	audio-routing =
+		"AMIC1", "MIC BIAS External1",
+		"AMIC2", "MIC BIAS Internal2",
+		"AMIC3", "MIC BIAS External1";
+
+	pinctrl-0 = <&cdc_pdm_default &sec_mi2s_default>;
+	pinctrl-1 = <&cdc_pdm_sleep &sec_mi2s_sleep>;
+	pinctrl-names = "default", "sleep";
+
+	sound_link_backend2: backend2-dai-link {
+		link-name = "Quaternary MI2S";
+
+		cpu {
+			sound-dai = <&q6afedai QUATERNARY_MI2S_RX>;
+		};
+		platform {
+			sound-dai = <&q6routing>;
+		};
+		codec {
+			sound-dai = <&speaker_codec>;
+		};
+	};
+};
+
 &usb {
 	status = "okay";
 	extcon = <&muic>, <&muic>;
diff --git a/arch/arm64/boot/dts/qcom/msm8916-samsung-e2015-common.dtsi b/arch/arm64/boot/dts/qcom/msm8916-samsung-e2015-common.dtsi
index 0824ab041d80..3c49dac92d2d 100644
--- a/arch/arm64/boot/dts/qcom/msm8916-samsung-e2015-common.dtsi
+++ b/arch/arm64/boot/dts/qcom/msm8916-samsung-e2015-common.dtsi
@@ -65,6 +65,10 @@ accelerometer@1d {
 	};
 };
 
+&mpss_mem {
+	reg = <0x0 0x86800000 0x0 0x5a00000>;
+};
+
 &reg_motor_vdd {
 	regulator-min-microvolt = <3300000>;
 	regulator-max-microvolt = <3300000>;
diff --git a/arch/arm64/boot/dts/qcom/msm8916-samsung-grandmax.dts b/arch/arm64/boot/dts/qcom/msm8916-samsung-grandmax.dts
index 3f145dde4059..5882b3a593b8 100644
--- a/arch/arm64/boot/dts/qcom/msm8916-samsung-grandmax.dts
+++ b/arch/arm64/boot/dts/qcom/msm8916-samsung-grandmax.dts
@@ -49,6 +49,10 @@ &reg_touch_key {
 	status = "disabled";
 };
 
+&sound {
+	model = "samsung-gmax"; /* No secondary microphone */
+};
+
 &tlmm {
 	gpio_leds_default: gpio-led-default-state {
 		pins = "gpio60";

-- 
2.42.0