diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.4/0076-Add-driver-for-rpi-proto.patch')
-rw-r--r-- | target/linux/brcm2708/patches-4.4/0076-Add-driver-for-rpi-proto.patch | 210 |
1 files changed, 0 insertions, 210 deletions
diff --git a/target/linux/brcm2708/patches-4.4/0076-Add-driver-for-rpi-proto.patch b/target/linux/brcm2708/patches-4.4/0076-Add-driver-for-rpi-proto.patch deleted file mode 100644 index deef6b6ba7..0000000000 --- a/target/linux/brcm2708/patches-4.4/0076-Add-driver-for-rpi-proto.patch +++ /dev/null @@ -1,210 +0,0 @@ -From 660d2fba0483aafc4a1ce678016620c0871bb759 Mon Sep 17 00:00:00 2001 -From: Waldemar Brodkorb <wbrodkorb@conet.de> -Date: Wed, 25 Mar 2015 09:26:17 +0100 -Subject: [PATCH 076/170] Add driver for rpi-proto - -Forward port of 3.10.x driver from https://github.com/koalo -We are using a custom board and would like to use rpi 3.18.x -kernel. Patch works fine for our embedded system. - -URL to the audio chip: -http://www.mikroe.com/add-on-boards/audio-voice/audio-codec-proto/ - -Playback tested with devicetree enabled. - -Signed-off-by: Waldemar Brodkorb <wbrodkorb@conet.de> ---- - sound/soc/bcm/Kconfig | 7 +++ - sound/soc/bcm/Makefile | 2 + - sound/soc/bcm/rpi-proto.c | 153 ++++++++++++++++++++++++++++++++++++++++++++++ - 3 files changed, 162 insertions(+) - create mode 100644 sound/soc/bcm/rpi-proto.c - ---- a/sound/soc/bcm/Kconfig -+++ b/sound/soc/bcm/Kconfig -@@ -43,6 +43,13 @@ config SND_BCM2708_SOC_RPI_DAC - help - Say Y or M if you want to add support for RPi-DAC. - -+config SND_BCM2708_SOC_RPI_PROTO -+ tristate "Support for Rpi-PROTO" -+ depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S -+ select SND_SOC_WM8731 -+ help -+ Say Y or M if you want to add support for Audio Codec Board PROTO (WM8731). -+ - config SND_BCM2708_SOC_IQAUDIO_DAC - tristate "Support for IQaudIO-DAC" - depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S ---- a/sound/soc/bcm/Makefile -+++ b/sound/soc/bcm/Makefile -@@ -9,6 +9,7 @@ snd-soc-hifiberry-dacplus-objs := hifibe - snd-soc-hifiberry-digi-objs := hifiberry_digi.o - snd-soc-hifiberry-amp-objs := hifiberry_amp.o - snd-soc-rpi-dac-objs := rpi-dac.o -+snd-soc-rpi-proto-objs := rpi-proto.o - snd-soc-iqaudio-dac-objs := iqaudio-dac.o - - obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DAC) += snd-soc-hifiberry-dac.o -@@ -16,4 +17,5 @@ obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_D - obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DIGI) += snd-soc-hifiberry-digi.o - obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_AMP) += snd-soc-hifiberry-amp.o - obj-$(CONFIG_SND_BCM2708_SOC_RPI_DAC) += snd-soc-rpi-dac.o -+obj-$(CONFIG_SND_BCM2708_SOC_RPI_PROTO) += snd-soc-rpi-proto.o - obj-$(CONFIG_SND_BCM2708_SOC_IQAUDIO_DAC) += snd-soc-iqaudio-dac.o ---- /dev/null -+++ b/sound/soc/bcm/rpi-proto.c -@@ -0,0 +1,153 @@ -+/* -+ * ASoC driver for PROTO AudioCODEC (with a WM8731) -+ * connected to a Raspberry Pi -+ * -+ * Author: Florian Meier, <koalo@koalo.de> -+ * Copyright 2013 -+ * -+ * This program is free software; you can redistribute it and/or modify -+ * it under the terms of the GNU General Public License version 2 as -+ * published by the Free Software Foundation. -+ */ -+ -+#include <linux/module.h> -+#include <linux/platform_device.h> -+ -+#include <sound/core.h> -+#include <sound/pcm.h> -+#include <sound/soc.h> -+#include <sound/jack.h> -+ -+#include "../codecs/wm8731.h" -+ -+static const unsigned int wm8731_rates_12288000[] = { -+ 8000, 32000, 48000, 96000, -+}; -+ -+static struct snd_pcm_hw_constraint_list wm8731_constraints_12288000 = { -+ .list = wm8731_rates_12288000, -+ .count = ARRAY_SIZE(wm8731_rates_12288000), -+}; -+ -+static int snd_rpi_proto_startup(struct snd_pcm_substream *substream) -+{ -+ /* Setup constraints, because there is a 12.288 MHz XTAL on the board */ -+ snd_pcm_hw_constraint_list(substream->runtime, 0, -+ SNDRV_PCM_HW_PARAM_RATE, -+ &wm8731_constraints_12288000); -+ return 0; -+} -+ -+static int snd_rpi_proto_hw_params(struct snd_pcm_substream *substream, -+ struct snd_pcm_hw_params *params) -+{ -+ struct snd_soc_pcm_runtime *rtd = substream->private_data; -+ struct snd_soc_codec *codec = rtd->codec; -+ struct snd_soc_dai *codec_dai = rtd->codec_dai; -+ struct snd_soc_dai *cpu_dai = rtd->cpu_dai; -+ int sysclk = 12288000; /* This is fixed on this board */ -+ -+ /* Set proto bclk */ -+ int ret = snd_soc_dai_set_bclk_ratio(cpu_dai,32*2); -+ if (ret < 0){ -+ dev_err(codec->dev, -+ "Failed to set BCLK ratio %d\n", ret); -+ return ret; -+ } -+ -+ /* Set proto sysclk */ -+ ret = snd_soc_dai_set_sysclk(codec_dai, WM8731_SYSCLK_XTAL, -+ sysclk, SND_SOC_CLOCK_IN); -+ if (ret < 0) { -+ dev_err(codec->dev, -+ "Failed to set WM8731 SYSCLK: %d\n", ret); -+ return ret; -+ } -+ -+ return 0; -+} -+ -+/* machine stream operations */ -+static struct snd_soc_ops snd_rpi_proto_ops = { -+ .startup = snd_rpi_proto_startup, -+ .hw_params = snd_rpi_proto_hw_params, -+}; -+ -+static struct snd_soc_dai_link snd_rpi_proto_dai[] = { -+{ -+ .name = "WM8731", -+ .stream_name = "WM8731 HiFi", -+ .cpu_dai_name = "bcm2708-i2s.0", -+ .codec_dai_name = "wm8731-hifi", -+ .platform_name = "bcm2708-i2s.0", -+ .codec_name = "wm8731.1-001a", -+ .dai_fmt = SND_SOC_DAIFMT_I2S -+ | SND_SOC_DAIFMT_NB_NF -+ | SND_SOC_DAIFMT_CBM_CFM, -+ .ops = &snd_rpi_proto_ops, -+}, -+}; -+ -+/* audio machine driver */ -+static struct snd_soc_card snd_rpi_proto = { -+ .name = "snd_rpi_proto", -+ .dai_link = snd_rpi_proto_dai, -+ .num_links = ARRAY_SIZE(snd_rpi_proto_dai), -+}; -+ -+static int snd_rpi_proto_probe(struct platform_device *pdev) -+{ -+ int ret = 0; -+ -+ snd_rpi_proto.dev = &pdev->dev; -+ -+ if (pdev->dev.of_node) { -+ struct device_node *i2s_node; -+ struct snd_soc_dai_link *dai = &snd_rpi_proto_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_proto); -+ if (ret) { -+ dev_err(&pdev->dev, -+ "snd_soc_register_card() failed: %d\n", ret); -+ } -+ -+ return ret; -+} -+ -+ -+static int snd_rpi_proto_remove(struct platform_device *pdev) -+{ -+ return snd_soc_unregister_card(&snd_rpi_proto); -+} -+ -+static const struct of_device_id snd_rpi_proto_of_match[] = { -+ { .compatible = "rpi,rpi-proto", }, -+ {}, -+}; -+MODULE_DEVICE_TABLE(of, snd_rpi_proto_of_match); -+ -+static struct platform_driver snd_rpi_proto_driver = { -+ .driver = { -+ .name = "snd-rpi-proto", -+ .owner = THIS_MODULE, -+ .of_match_table = snd_rpi_proto_of_match, -+ }, -+ .probe = snd_rpi_proto_probe, -+ .remove = snd_rpi_proto_remove, -+}; -+ -+module_platform_driver(snd_rpi_proto_driver); -+ -+MODULE_AUTHOR("Florian Meier"); -+MODULE_DESCRIPTION("ASoC Driver for Raspberry Pi connected to PROTO board (WM8731)"); -+MODULE_LICENSE("GPL"); |