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openwrt/target/linux/brcm2708/patches-3.18/0064-Adding-Device-Tree-sup...

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From 5f17e24bea60b696815d2c6cb578e1e23f61cd57 Mon Sep 17 00:00:00 2001
From: Phil Elwell <phil@raspberrypi.org>
Date: Wed, 12 Nov 2014 17:07:02 +0000
Subject: [PATCH 064/114] Adding Device Tree support for some RPi audio cards
---
arch/arm/boot/dts/Makefile | 2 +
arch/arm/boot/dts/bcm2708-rpi-b-plus.dts | 81 +++++++++++++++++++++++++
arch/arm/boot/dts/bcm2708-rpi-b.dts | 19 +++++-
arch/arm/boot/dts/bcm2708.dtsi | 18 ++++--
arch/arm/boot/dts/hifiberry-dac-overlay.dts | 34 +++++++++++
arch/arm/boot/dts/hifiberry-dacplus-overlay.dts | 39 ++++++++++++
arch/arm/boot/dts/hifiberry-digi-overlay.dts | 39 ++++++++++++
arch/arm/boot/dts/iqaudio-dac-overlay.dts | 39 ++++++++++++
arch/arm/boot/dts/iqaudio-dacplus-overlay.dts | 39 ++++++++++++
sound/soc/bcm/hifiberry_dac.c | 22 +++++++
sound/soc/bcm/hifiberry_dacplus.c | 22 +++++++
sound/soc/bcm/hifiberry_digi.c | 22 +++++++
sound/soc/bcm/iqaudio-dac.c | 16 +++++
sound/soc/codecs/pcm5102a.c | 7 +++
14 files changed, 393 insertions(+), 6 deletions(-)
create mode 100644 arch/arm/boot/dts/bcm2708-rpi-b-plus.dts
create mode 100644 arch/arm/boot/dts/hifiberry-dac-overlay.dts
create mode 100644 arch/arm/boot/dts/hifiberry-dacplus-overlay.dts
create mode 100644 arch/arm/boot/dts/hifiberry-digi-overlay.dts
create mode 100644 arch/arm/boot/dts/iqaudio-dac-overlay.dts
create mode 100644 arch/arm/boot/dts/iqaudio-dacplus-overlay.dts
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -54,6 +54,7 @@ dtb-$(CONFIG_ARCH_AT91) += at91-sama5d4e
dtb-$(CONFIG_ARCH_ATLAS6) += atlas6-evb.dtb
dtb-$(CONFIG_ARCH_AXXIA) += axm5516-amarillo.dtb
dtb-$(CONFIG_BCM2708_DT) += bcm2708-rpi-b.dtb
+dtb-$(CONFIG_BCM2708_DT) += bcm2708-rpi-b-plus.dtb
dtb-$(CONFIG_ARCH_BCM2835) += bcm2835-rpi-b.dtb
dtb-$(CONFIG_ARCH_BCM_5301X) += bcm4708-netgear-r6250.dtb
dtb-$(CONFIG_ARCH_BCM_63XX) += bcm963138dvt.dtb
@@ -520,6 +521,7 @@ dtb-$(CONFIG_ARCH_MEDIATEK) += mt6589-aq
targets += dtbs dtbs_install
targets += $(dtb-y)
+
endif
# *.dtb used to be generated in the directory above. Clean out the
--- /dev/null
+++ b/arch/arm/boot/dts/bcm2708-rpi-b-plus.dts
@@ -0,0 +1,81 @@
+/dts-v1/;
+
+/include/ "bcm2708.dtsi"
+
+/ {
+ compatible = "brcm,bcm2708";
+ model = "Raspberry Pi Model B+";
+
+ aliases {
+ spi0 = &spi0;
+ i2c0 = &i2c0;
+ i2c1 = &i2c1;
+ i2s = &i2s;
+ gpio = &gpio;
+ sound = &sound;
+ };
+
+ sound: sound {
+ };
+};
+
+&gpio {
+ spi0_pins: spi0_pins {
+ brcm,pins = <7 8 9 10 11>;
+ brcm,function = <4>; /* alt0 */
+ };
+
+ i2c0_pins: i2c0 {
+ brcm,pins = <0 1>;
+ brcm,function = <4>;
+ };
+
+ i2c1_pins: i2c1 {
+ brcm,pins = <2 3>;
+ brcm,function = <4>;
+ };
+
+ i2s_pins: i2s {
+ brcm,pins = <18 19 20 21>;
+ brcm,function = <4>; /* alt0 */
+ };
+};
+
+&spi0 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&spi0_pins>;
+
+ spidev@0{
+ compatible = "spidev";
+ reg = <0>; /* CE0 */
+ #address-cells = <1>;
+ #size-cells = <0>;
+ spi-max-frequency = <500000>;
+ };
+
+ spidev@1{
+ compatible = "spidev";
+ reg = <1>; /* CE1 */
+ #address-cells = <1>;
+ #size-cells = <0>;
+ spi-max-frequency = <500000>;
+ };
+};
+
+&i2c0 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&i2c0_pins>;
+ clock-frequency = <100000>;
+};
+
+&i2c1 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&i2c1_pins>;
+ clock-frequency = <100000>;
+};
+
+&i2s {
+ #sound-dai-cells = <0>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&i2s_pins>;
+};
--- a/arch/arm/boot/dts/bcm2708-rpi-b.dts
+++ b/arch/arm/boot/dts/bcm2708-rpi-b.dts
@@ -4,12 +4,18 @@
/ {
compatible = "brcm,bcm2708";
- model = "Raspberry Pi";
+ model = "Raspberry Pi Model B";
aliases {
spi0 = &spi0;
i2c0 = &i2c0;
i2c1 = &i2c1;
+ i2s = &i2s;
+ gpio = &gpio;
+ sound = &sound;
+ };
+
+ sound: sound {
};
};
@@ -28,6 +34,11 @@
brcm,pins = <2 3>;
brcm,function = <4>;
};
+
+ i2s_pins: i2s {
+ brcm,pins = <28 29 30 31>;
+ brcm,function = <4>; /* alt0 */
+ };
};
&spi0 {
@@ -62,3 +73,9 @@
pinctrl-0 = <&i2c1_pins>;
clock-frequency = <100000>;
};
+
+&i2s {
+ #sound-dai-cells = <0>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&i2s_pins>;
+};
--- a/arch/arm/boot/dts/bcm2708.dtsi
+++ b/arch/arm/boot/dts/bcm2708.dtsi
@@ -7,11 +7,8 @@
interrupt-parent = <&intc>;
chosen {
- /*
- bootargs must be 1024 characters long because the
- VC bootloader can't expand it
- */
- bootargs = "console=ttyAMA0 ";
+ /* No padding required - the boot loader can do that. */
+ bootargs = "";
};
soc {
@@ -39,6 +36,17 @@
#interrupt-cells = <2>;
};
+ i2s: i2s@7e203000 {
+ compatible = "brcm,bcm2708-i2s";
+ reg = <0x7e203000 0x20>,
+ <0x7e101098 0x02>;
+
+ //dmas = <&dma 2>,
+ // <&dma 3>;
+ dma-names = "tx", "rx";
+ status = "disabled";
+ };
+
spi0: spi@7e204000 {
compatible = "brcm,bcm2708-spi";
reg = <0x7e204000 0x1000>;
--- /dev/null
+++ b/arch/arm/boot/dts/hifiberry-dac-overlay.dts
@@ -0,0 +1,34 @@
+// Definitions for HiFiBerry DAC
+/dts-v1/;
+/plugin/;
+
+/ {
+ compatible = "brcm,bcm2708";
+
+ fragment@0 {
+ target = <&sound>;
+ __overlay__ {
+ compatible = "hifiberry,hifiberry-dac";
+ i2s-controller = <&i2s>;
+ status = "okay";
+ };
+ };
+
+ fragment@1 {
+ target = <&i2s>;
+ __overlay__ {
+ status = "okay";
+ };
+ };
+
+ fragment@2 {
+ target-path = "/";
+ __overlay__ {
+ pcm5102a-codec {
+ #sound-dai-cells = <0>;
+ compatible = "ti,pcm5102a";
+ status = "okay";
+ };
+ };
+ };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/hifiberry-dacplus-overlay.dts
@@ -0,0 +1,39 @@
+// Definitions for HiFiBerry DAC+
+/dts-v1/;
+/plugin/;
+
+/ {
+ compatible = "brcm,bcm2708";
+
+ fragment@0 {
+ target = <&sound>;
+ __overlay__ {
+ compatible = "hifiberry,hifiberry-dacplus";
+ i2s-controller = <&i2s>;
+ status = "okay";
+ };
+ };
+
+ fragment@1 {
+ target = <&i2s>;
+ __overlay__ {
+ status = "okay";
+ };
+ };
+
+ fragment@2 {
+ target = <&i2c1>;
+ __overlay__ {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ status = "okay";
+
+ pcm5122@4d {
+ #sound-dai-cells = <0>;
+ compatible = "ti,pcm5122";
+ reg = <0x4d>;
+ status = "okay";
+ };
+ };
+ };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/hifiberry-digi-overlay.dts
@@ -0,0 +1,39 @@
+// Definitions for HiFiBerry Digi
+/dts-v1/;
+/plugin/;
+
+/ {
+ compatible = "brcm,bcm2708";
+
+ fragment@0 {
+ target = <&sound>;
+ __overlay__ {
+ compatible = "hifiberry,hifiberry-digi";
+ i2s-controller = <&i2s>;
+ status = "okay";
+ };
+ };
+
+ fragment@1 {
+ target = <&i2s>;
+ __overlay__ {
+ status = "okay";
+ };
+ };
+
+ fragment@2 {
+ target = <&i2c1>;
+ __overlay__ {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ status = "okay";
+
+ wm8804@3b {
+ #sound-dai-cells = <0>;
+ compatible = "wlf,wm8804";
+ reg = <0x3b>;
+ status = "okay";
+ };
+ };
+ };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/iqaudio-dac-overlay.dts
@@ -0,0 +1,39 @@
+// Definitions for IQaudIO DAC
+/dts-v1/;
+/plugin/;
+
+/ {
+ compatible = "brcm,bcm2708";
+
+ fragment@0 {
+ target = <&sound>;
+ __overlay__ {
+ compatible = "iqaudio,iqaudio-dac";
+ i2s-controller = <&i2s>;
+ status = "okay";
+ };
+ };
+
+ fragment@1 {
+ target = <&i2s>;
+ __overlay__ {
+ status = "okay";
+ };
+ };
+
+ fragment@2 {
+ target = <&i2c1>;
+ __overlay__ {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ status = "okay";
+
+ pcm5122@4c {
+ #sound-dai-cells = <0>;
+ compatible = "ti,pcm5122";
+ reg = <0x4c>;
+ status = "okay";
+ };
+ };
+ };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/iqaudio-dacplus-overlay.dts
@@ -0,0 +1,39 @@
+// Definitions for IQaudIO DAC+
+/dts-v1/;
+/plugin/;
+
+/ {
+ compatible = "brcm,bcm2708";
+
+ fragment@0 {
+ target = <&sound>;
+ __overlay__ {
+ compatible = "iqaudio,iqaudio-dac";
+ i2s-controller = <&i2s>;
+ status = "okay";
+ };
+ };
+
+ fragment@1 {
+ target = <&i2s>;
+ __overlay__ {
+ status = "okay";
+ };
+ };
+
+ fragment@2 {
+ target = <&i2c1>;
+ __overlay__ {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ status = "okay";
+
+ pcm5122@4c {
+ #sound-dai-cells = <0>;
+ compatible = "ti,pcm5122";
+ reg = <0x4c>;
+ status = "okay";
+ };
+ };
+ };
+};
--- a/sound/soc/bcm/hifiberry_dac.c
+++ b/sound/soc/bcm/hifiberry_dac.c
@@ -72,6 +72,21 @@ static int snd_rpi_hifiberry_dac_probe(s
int ret = 0;
snd_rpi_hifiberry_dac.dev = &pdev->dev;
+
+ if (pdev->dev.of_node) {
+ struct device_node *i2s_node;
+ struct snd_soc_dai_link *dai = &snd_rpi_hifiberry_dac_dai[0];
+ i2s_node = of_parse_phandle(pdev->dev.of_node,
+ "i2s-controller", 0);
+
+ if (i2s_node) {
+ dai->cpu_dai_name = NULL;
+ dai->cpu_of_node = i2s_node;
+ dai->platform_name = NULL;
+ dai->platform_of_node = i2s_node;
+ }
+ }
+
ret = snd_soc_register_card(&snd_rpi_hifiberry_dac);
if (ret)
dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n", ret);
@@ -84,10 +99,17 @@ static int snd_rpi_hifiberry_dac_remove(
return snd_soc_unregister_card(&snd_rpi_hifiberry_dac);
}
+static const struct of_device_id snd_rpi_hifiberry_dac_of_match[] = {
+ { .compatible = "hifiberry,hifiberry-dac", },
+ {},
+};
+MODULE_DEVICE_TABLE(of, snd_rpi_hifiberry_dac_of_match);
+
static struct platform_driver snd_rpi_hifiberry_dac_driver = {
.driver = {
.name = "snd-hifiberry-dac",
.owner = THIS_MODULE,
+ .of_match_table = snd_rpi_hifiberry_dac_of_match,
},
.probe = snd_rpi_hifiberry_dac_probe,
.remove = snd_rpi_hifiberry_dac_remove,
--- a/sound/soc/bcm/hifiberry_dacplus.c
+++ b/sound/soc/bcm/hifiberry_dacplus.c
@@ -90,6 +90,21 @@ static int snd_rpi_hifiberry_dacplus_pro
int ret = 0;
snd_rpi_hifiberry_dacplus.dev = &pdev->dev;
+
+ if (pdev->dev.of_node) {
+ struct device_node *i2s_node;
+ struct snd_soc_dai_link *dai = &snd_rpi_hifiberry_dacplus_dai[0];
+ i2s_node = of_parse_phandle(pdev->dev.of_node,
+ "i2s-controller", 0);
+
+ if (i2s_node) {
+ dai->cpu_dai_name = NULL;
+ dai->cpu_of_node = i2s_node;
+ dai->platform_name = NULL;
+ dai->platform_of_node = i2s_node;
+ }
+ }
+
ret = snd_soc_register_card(&snd_rpi_hifiberry_dacplus);
if (ret)
dev_err(&pdev->dev,
@@ -103,10 +118,17 @@ static int snd_rpi_hifiberry_dacplus_rem
return snd_soc_unregister_card(&snd_rpi_hifiberry_dacplus);
}
+static const struct of_device_id snd_rpi_hifiberry_dacplus_of_match[] = {
+ { .compatible = "hifiberry,hifiberry-dacplus", },
+ {},
+};
+MODULE_DEVICE_TABLE(of, snd_rpi_hifiberry_dacplus_of_match);
+
static struct platform_driver snd_rpi_hifiberry_dacplus_driver = {
.driver = {
.name = "snd-rpi-hifiberry-dacplus",
.owner = THIS_MODULE,
+ .of_match_table = snd_rpi_hifiberry_dacplus_of_match,
},
.probe = snd_rpi_hifiberry_dacplus_probe,
.remove = snd_rpi_hifiberry_dacplus_remove,
--- a/sound/soc/bcm/hifiberry_digi.c
+++ b/sound/soc/bcm/hifiberry_digi.c
@@ -125,6 +125,21 @@ static int snd_rpi_hifiberry_digi_probe(
int ret = 0;
snd_rpi_hifiberry_digi.dev = &pdev->dev;
+
+ if (pdev->dev.of_node) {
+ struct device_node *i2s_node;
+ struct snd_soc_dai_link *dai = &snd_rpi_hifiberry_digi_dai[0];
+ i2s_node = of_parse_phandle(pdev->dev.of_node,
+ "i2s-controller", 0);
+
+ if (i2s_node) {
+ dai->cpu_dai_name = NULL;
+ dai->cpu_of_node = i2s_node;
+ dai->platform_name = NULL;
+ dai->platform_of_node = i2s_node;
+ }
+ }
+
ret = snd_soc_register_card(&snd_rpi_hifiberry_digi);
if (ret)
dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n", ret);
@@ -137,10 +152,17 @@ static int snd_rpi_hifiberry_digi_remove
return snd_soc_unregister_card(&snd_rpi_hifiberry_digi);
}
+static const struct of_device_id snd_rpi_hifiberry_digi_of_match[] = {
+ { .compatible = "hifiberry,hifiberry-digi", },
+ {},
+};
+MODULE_DEVICE_TABLE(of, snd_rpi_hifiberry_digi_of_match);
+
static struct platform_driver snd_rpi_hifiberry_digi_driver = {
.driver = {
.name = "snd-hifiberry-digi",
.owner = THIS_MODULE,
+ .of_match_table = snd_rpi_hifiberry_digi_of_match,
},
.probe = snd_rpi_hifiberry_digi_probe,
.remove = snd_rpi_hifiberry_digi_remove,
--- a/sound/soc/bcm/iqaudio-dac.c
+++ b/sound/soc/bcm/iqaudio-dac.c
@@ -76,6 +76,21 @@ static int snd_rpi_iqaudio_dac_probe(str
int ret = 0;
snd_rpi_iqaudio_dac.dev = &pdev->dev;
+
+ if (pdev->dev.of_node) {
+ struct device_node *i2s_node;
+ struct snd_soc_dai_link *dai = &snd_rpi_iqaudio_dac_dai[0];
+ i2s_node = of_parse_phandle(pdev->dev.of_node,
+ "i2s-controller", 0);
+
+ if (i2s_node) {
+ dai->cpu_dai_name = NULL;
+ dai->cpu_of_node = i2s_node;
+ dai->platform_name = NULL;
+ dai->platform_of_node = i2s_node;
+ }
+ }
+
ret = snd_soc_register_card(&snd_rpi_iqaudio_dac);
if (ret)
dev_err(&pdev->dev,
@@ -93,6 +108,7 @@ static const struct of_device_id iqaudio
{ .compatible = "iqaudio,iqaudio-dac", },
{},
};
+MODULE_DEVICE_TABLE(of, iqaudio_of_match);
static struct platform_driver snd_rpi_iqaudio_dac_driver = {
.driver = {
--- a/sound/soc/codecs/pcm5102a.c
+++ b/sound/soc/codecs/pcm5102a.c
@@ -47,12 +47,19 @@ static int pcm5102a_remove(struct platfo
return 0;
}
+static const struct of_device_id pcm5102a_of_match[] = {
+ { .compatible = "ti,pcm5102a", },
+ { }
+};
+MODULE_DEVICE_TABLE(of, pcm5102a_of_match);
+
static struct platform_driver pcm5102a_codec_driver = {
.probe = pcm5102a_probe,
.remove = pcm5102a_remove,
.driver = {
.name = "pcm5102a-codec",
.owner = THIS_MODULE,
+ .of_match_table = pcm5102a_of_match,
},
};
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