2b1c6b21b5
As usual these patches were extracted and rebased from the raspberry pi repo: https://github.com/raspberrypi/linux/tree/rpi-4.4.y Also adds support for Raspberry Pi Compute Module 3 (untested). Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
187 lines
5.2 KiB
Diff
187 lines
5.2 KiB
Diff
From e528c5d3f8cffca37abf9c69f7178f0221974225 Mon Sep 17 00:00:00 2001
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From: "Daniel Matuschek (HiFiBerry)" <daniel@hifiberry.com>
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Date: Tue, 26 Jul 2016 19:16:25 +0200
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Subject: [PATCH] Added HiFiBerry Digi+ Pro driver
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Signed-off-by: Daniel Matuschek <daniel@hifiberry.com>
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---
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arch/arm/boot/dts/overlays/Makefile | 1 +
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arch/arm/boot/dts/overlays/README | 8 +++-
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.../dts/overlays/hifiberry-digi-pro-overlay.dts | 41 +++++++++++++++++
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sound/soc/bcm/hifiberry_digi.c | 51 ++++++++++++++++++++++
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4 files changed, 100 insertions(+), 1 deletion(-)
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create mode 100644 arch/arm/boot/dts/overlays/hifiberry-digi-pro-overlay.dts
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--- a/arch/arm/boot/dts/overlays/Makefile
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+++ b/arch/arm/boot/dts/overlays/Makefile
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@@ -31,6 +31,7 @@ dtbo-$(RPI_DT_OVERLAYS) += hifiberry-amp
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dtbo-$(RPI_DT_OVERLAYS) += hifiberry-dac.dtbo
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dtbo-$(RPI_DT_OVERLAYS) += hifiberry-dacplus.dtbo
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dtbo-$(RPI_DT_OVERLAYS) += hifiberry-digi.dtbo
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+dtbo-$(RPI_DT_OVERLAYS) += hifiberry-digi-pro.dtbo
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dtbo-$(RPI_DT_OVERLAYS) += hy28a.dtbo
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dtbo-$(RPI_DT_OVERLAYS) += hy28b.dtbo
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dtbo-$(RPI_DT_OVERLAYS) += i2c-gpio.dtbo
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--- a/arch/arm/boot/dts/overlays/README
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+++ b/arch/arm/boot/dts/overlays/README
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@@ -377,11 +377,17 @@ Params: 24db_digital_gain Allow ga
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Name: hifiberry-digi
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-Info: Configures the HifiBerry Digi audio card
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+Info: Configures the HifiBerry Digi and Digi+ audio card
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Load: dtoverlay=hifiberry-digi
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Params: <None>
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+Name: hifiberry-digi-pro
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+Info: Configures the HifiBerry Digi+ Pro audio card
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+Load: dtoverlay=hifiberry-digi-pro
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+Params: <None>
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+
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+
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Name: hy28a
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Info: HY28A - 2.8" TFT LCD Display Module by HAOYU Electronics
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Default values match Texy's display shield
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--- /dev/null
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+++ b/arch/arm/boot/dts/overlays/hifiberry-digi-pro-overlay.dts
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@@ -0,0 +1,41 @@
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+// Definitions for HiFiBerry Digi Pro
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+/dts-v1/;
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+/plugin/;
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+
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+/ {
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+ compatible = "brcm,bcm2708";
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+
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+ fragment@0 {
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+ target = <&i2s>;
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+ __overlay__ {
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+ status = "okay";
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+ };
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+ };
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+
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+ fragment@1 {
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+ target = <&i2c1>;
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+ __overlay__ {
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+ #address-cells = <1>;
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+ #size-cells = <0>;
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+ status = "okay";
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+
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+ wm8804@3b {
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+ #sound-dai-cells = <0>;
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+ compatible = "wlf,wm8804";
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+ reg = <0x3b>;
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+ status = "okay";
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+ };
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+ };
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+ };
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+
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+ fragment@2 {
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+ target = <&sound>;
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+ __overlay__ {
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+ compatible = "hifiberry,hifiberry-digi";
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+ i2s-controller = <&i2s>;
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+ status = "okay";
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+ clock44-gpio = <&gpio 5 0>;
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+ clock48-gpio = <&gpio 6 0>;
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+ };
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+ };
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+};
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--- a/sound/soc/bcm/hifiberry_digi.c
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+++ b/sound/soc/bcm/hifiberry_digi.c
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@@ -23,6 +23,7 @@
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#include <sound/pcm_params.h>
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#include <sound/soc.h>
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#include <sound/jack.h>
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+#include <linux/gpio/consumer.h>
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#include "../codecs/wm8804.h"
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@@ -30,9 +31,34 @@ static short int auto_shutdown_output =
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module_param(auto_shutdown_output, short, S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP);
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MODULE_PARM_DESC(auto_shutdown_output, "Shutdown SP/DIF output if playback is stopped");
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+#define CLK_44EN_RATE 22579200UL
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+#define CLK_48EN_RATE 24576000UL
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+
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+static bool snd_rpi_hifiberry_is_digipro;
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+static struct gpio_desc *snd_rpi_hifiberry_clk44gpio;
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+static struct gpio_desc *snd_rpi_hifiberry_clk48gpio;
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static int samplerate=44100;
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+static uint32_t snd_rpi_hifiberry_digi_enable_clock(int sample_rate)
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+{
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+ switch (sample_rate) {
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+ case 11025:
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+ case 22050:
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+ case 44100:
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+ case 88200:
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+ case 176400:
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+ gpiod_set_value_cansleep(snd_rpi_hifiberry_clk44gpio, 1);
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+ gpiod_set_value_cansleep(snd_rpi_hifiberry_clk48gpio, 0);
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+ return CLK_44EN_RATE;
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+ default:
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+ gpiod_set_value_cansleep(snd_rpi_hifiberry_clk48gpio, 1);
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+ gpiod_set_value_cansleep(snd_rpi_hifiberry_clk44gpio, 0);
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+ return CLK_48EN_RATE;
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+ }
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+}
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+
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+
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static int snd_rpi_hifiberry_digi_init(struct snd_soc_pcm_runtime *rtd)
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{
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struct snd_soc_codec *codec = rtd->codec;
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@@ -40,6 +66,14 @@ static int snd_rpi_hifiberry_digi_init(s
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/* enable TX output */
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snd_soc_update_bits(codec, WM8804_PWRDN, 0x4, 0x0);
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+ /* Initialize Digi+ Pro hardware */
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+ if (snd_rpi_hifiberry_is_digipro) {
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+ struct snd_soc_dai_link *dai = rtd->dai_link;
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+
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+ dai->name = "HiFiBerry Digi+ Pro";
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+ dai->stream_name = "HiFiBerry Digi+ Pro HiFi";
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+ }
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+
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return 0;
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}
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@@ -87,6 +121,9 @@ static int snd_rpi_hifiberry_digi_hw_par
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mclk_freq=samplerate*128;
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mclk_div=WM8804_MCLKDIV_128FS;
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}
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+
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+ if (snd_rpi_hifiberry_is_digipro)
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+ sysclk = snd_rpi_hifiberry_digi_enable_clock(samplerate);
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switch (samplerate) {
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case 32000:
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@@ -121,6 +158,7 @@ static int snd_rpi_hifiberry_digi_hw_par
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ret = snd_soc_dai_set_sysclk(codec_dai, WM8804_TX_CLKSRC_PLL,
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sysclk, SND_SOC_CLOCK_OUT);
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+
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if (ret < 0) {
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dev_err(codec->dev,
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"Failed to set WM8804 SYSCLK: %d\n", ret);
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@@ -187,6 +225,19 @@ static int snd_rpi_hifiberry_digi_probe(
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dai->platform_name = NULL;
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dai->platform_of_node = i2s_node;
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}
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+
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+ snd_rpi_hifiberry_is_digipro = 1;
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+
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+ snd_rpi_hifiberry_clk44gpio =
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+ devm_gpiod_get(&pdev->dev, "clock44", GPIOD_OUT_LOW);
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+ if (IS_ERR(snd_rpi_hifiberry_clk44gpio))
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+ snd_rpi_hifiberry_is_digipro = 0;
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+
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+ snd_rpi_hifiberry_clk48gpio =
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+ devm_gpiod_get(&pdev->dev, "clock48", GPIOD_OUT_LOW);
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+ if (IS_ERR(snd_rpi_hifiberry_clk48gpio))
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+ snd_rpi_hifiberry_is_digipro = 0;
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+
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}
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ret = snd_soc_register_card(&snd_rpi_hifiberry_digi);
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