diff options
Diffstat (limited to 'target/arm/bcm28xx/patches/3.18.8/0001-add-support-for-rpi-proto-hardware.patch')
| -rw-r--r-- | target/arm/bcm28xx/patches/3.18.8/0001-add-support-for-rpi-proto-hardware.patch | 282 |
1 files changed, 282 insertions, 0 deletions
diff --git a/target/arm/bcm28xx/patches/3.18.8/0001-add-support-for-rpi-proto-hardware.patch b/target/arm/bcm28xx/patches/3.18.8/0001-add-support-for-rpi-proto-hardware.patch new file mode 100644 index 000000000..d2c72cdd5 --- /dev/null +++ b/target/arm/bcm28xx/patches/3.18.8/0001-add-support-for-rpi-proto-hardware.patch @@ -0,0 +1,282 @@ +diff -Nur linux-rpi/arch/arm/boot/dts/Makefile linux-rpi-rpi-proto/arch/arm/boot/dts/Makefile +--- linux-rpi/arch/arm/boot/dts/Makefile 2015-02-09 04:39:42.000000000 +0100 ++++ linux-rpi-rpi-proto/arch/arm/boot/dts/Makefile 2015-02-09 04:59:22.000000000 +0100 +@@ -71,6 +71,7 @@ + dtb-$(RPI_DT_OVERLAYS) += hifiberry-amp-overlay.dtb + dtb-$(RPI_DT_OVERLAYS) += iqaudio-dac-overlay.dtb + dtb-$(RPI_DT_OVERLAYS) += iqaudio-dacplus-overlay.dtb ++dtb-$(RPI_DT_OVERLAYS) += rpi-proto-overlay.dtb + dtb-$(RPI_DT_OVERLAYS) += lirc-rpi-overlay.dtb + dtb-$(RPI_DT_OVERLAYS) += pcf2127-rtc-overlay.dtb + dtb-$(RPI_DT_OVERLAYS) += pcf8523-rtc-overlay.dtb +diff -Nur linux-rpi/arch/arm/boot/dts/rpi-proto-overlay.dts linux-rpi-rpi-proto/arch/arm/boot/dts/rpi-proto-overlay.dts +--- linux-rpi/arch/arm/boot/dts/rpi-proto-overlay.dts 1970-01-01 01:00:00.000000000 +0100 ++++ linux-rpi-rpi-proto/arch/arm/boot/dts/rpi-proto-overlay.dts 2015-02-09 04:58:32.000000000 +0100 +@@ -0,0 +1,39 @@ ++// Definitions for Rpi-Proto ++/dts-v1/; ++/plugin/; ++ ++/ { ++ compatible = "brcm,bcm2708"; ++ ++ fragment@0 { ++ target = <&sound>; ++ __overlay__ { ++ compatible = "rpi,rpi-proto"; ++ 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"; ++ ++ wm8731@1a { ++ #sound-dai-cells = <0>; ++ compatible = "wlf,wm8731"; ++ reg = <0x1a>; ++ status = "okay"; ++ }; ++ }; ++ }; ++}; +diff -Nur linux-rpi/arch/arm/mach-bcm2708/bcm2708.c linux-rpi-rpi-proto/arch/arm/mach-bcm2708/bcm2708.c +--- linux-rpi/arch/arm/mach-bcm2708/bcm2708.c 2015-02-09 04:39:42.000000000 +0100 ++++ linux-rpi-rpi-proto/arch/arm/mach-bcm2708/bcm2708.c 2015-02-09 04:58:32.000000000 +0100 +@@ -703,6 +703,21 @@ + }; + #endif + ++#if defined(CONFIG_SND_BCM2708_SOC_RPI_PROTO) || defined(CONFIG_SND_BCM2708_SOC_RPI_PROTO_MODULE) ++static struct platform_device snd_rpi_proto_device = { ++ .name = "snd-rpi-proto", ++ .id = 0, ++ .num_resources = 0, ++}; ++ ++static struct i2c_board_info __initdata snd_wm8731_i2c_devices[] = { ++ { ++ I2C_BOARD_INFO("wm8731", 0x1a) ++ }, ++}; ++ ++#endif ++ + #if defined(CONFIG_SND_BCM2708_SOC_RPI_DAC) || defined(CONFIG_SND_BCM2708_SOC_RPI_DAC_MODULE) + static struct platform_device snd_rpi_dac_device = { + .name = "snd-rpi-dac", +@@ -922,6 +937,11 @@ + i2c_register_board_info_dt(1, snd_tas5713_i2c_devices, ARRAY_SIZE(snd_tas5713_i2c_devices)); + #endif + ++#if defined(CONFIG_SND_BCM2708_SOC_RPI_PROTO) || defined(CONFIG_SND_BCM2708_SOC_RPI_PROTO_MODULE) ++ bcm_register_device_dt(&snd_rpi_proto_device); ++ i2c_register_board_info_dt(1, snd_wm8731_i2c_devices, ARRAY_SIZE(snd_wm8731_i2c_devices)); ++#endif ++ + #if defined(CONFIG_SND_BCM2708_SOC_RPI_DAC) || defined(CONFIG_SND_BCM2708_SOC_RPI_DAC_MODULE) + bcm_register_device_dt(&snd_rpi_dac_device); + bcm_register_device_dt(&snd_pcm1794a_codec_device); +diff -Nur linux-rpi/sound/soc/bcm/Kconfig linux-rpi-rpi-proto/sound/soc/bcm/Kconfig +--- linux-rpi/sound/soc/bcm/Kconfig 2015-02-09 04:40:48.000000000 +0100 ++++ linux-rpi-rpi-proto/sound/soc/bcm/Kconfig 2015-02-09 04:58:32.000000000 +0100 +@@ -54,6 +54,14 @@ + 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 ++ select SND_SOC_WM8731 ++ help ++ Say Y 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 +diff -Nur linux-rpi/sound/soc/bcm/Makefile linux-rpi-rpi-proto/sound/soc/bcm/Makefile +--- linux-rpi/sound/soc/bcm/Makefile 2015-02-09 04:40:48.000000000 +0100 ++++ linux-rpi-rpi-proto/sound/soc/bcm/Makefile 2015-02-09 04:58:32.000000000 +0100 +@@ -14,6 +14,7 @@ + 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 +@@ -21,4 +22,5 @@ + 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 +diff -Nur linux-rpi/sound/soc/bcm/rpi-proto.c linux-rpi-rpi-proto/sound/soc/bcm/rpi-proto.c +--- linux-rpi/sound/soc/bcm/rpi-proto.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-rpi-rpi-proto/sound/soc/bcm/rpi-proto.c 2015-02-09 04:58:32.000000000 +0100 +@@ -0,0 +1,152 @@ ++/* ++ * 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_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(substream->pcm->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(substream->pcm->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"); |