diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-5.15/950-0456-ASoC-bcm-Add-chipdip-dac-driver.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-5.15/950-0456-ASoC-bcm-Add-chipdip-dac-driver.patch | 325 |
1 files changed, 325 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.15/950-0456-ASoC-bcm-Add-chipdip-dac-driver.patch b/target/linux/bcm27xx/patches-5.15/950-0456-ASoC-bcm-Add-chipdip-dac-driver.patch new file mode 100644 index 0000000000..de69367552 --- /dev/null +++ b/target/linux/bcm27xx/patches-5.15/950-0456-ASoC-bcm-Add-chipdip-dac-driver.patch @@ -0,0 +1,325 @@ +From 7da0da344225ec00f3070f9b4f6cb9dda06093ab Mon Sep 17 00:00:00 2001 +From: "chipdip.lab" <43340836+chipdipru@users.noreply.github.com> +Date: Mon, 26 Jul 2021 14:45:59 +0300 +Subject: [PATCH] ASoC: bcm: Add chipdip-dac driver + +Driver chipdip-dac.c added into sound/soc/bcm/, files +sound/soc/bcm/Kconfig and sound/soc/bcm/Makefile updated. + +Signed-off-by: Evgenij Sapunov <evgenij.sapunov@chipdip.ru> +--- + sound/soc/bcm/Kconfig | 6 + + sound/soc/bcm/Makefile | 3 +- + sound/soc/bcm/chipdip-dac.c | 275 ++++++++++++++++++++++++++++++++++++ + 3 files changed, 283 insertions(+), 1 deletion(-) + create mode 100644 sound/soc/bcm/chipdip-dac.c + +--- a/sound/soc/bcm/Kconfig ++++ b/sound/soc/bcm/Kconfig +@@ -27,6 +27,12 @@ config SND_BCM63XX_I2S_WHISTLER + + If you don't know what to do here, say N + ++config SND_BCM2708_SOC_CHIPDIP_DAC ++ tristate "Support for the ChipDip DAC" ++ depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S ++ help ++ Say Y or M if you want to add support for the ChipDip DAC soundcard ++ + config SND_BCM2708_SOC_GOOGLEVOICEHAT_SOUNDCARD + tristate "Support for Google voiceHAT soundcard" + depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S +--- a/sound/soc/bcm/Makefile ++++ b/sound/soc/bcm/Makefile +@@ -47,6 +47,7 @@ snd-soc-fe-pi-audio-objs := fe-pi-audio. + snd-soc-rpi-simple-soundcard-objs := rpi-simple-soundcard.o + snd-soc-rpi-wm8804-soundcard-objs := rpi-wm8804-soundcard.o + snd-soc-pifi-40-objs := pifi-40.o ++snd-soc-chipdip-dac-objs := chipdip-dac.o + + obj-$(CONFIG_SND_BCM2708_SOC_GOOGLEVOICEHAT_SOUNDCARD) += snd-soc-googlevoicehat-codec.o + obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUS) += snd-soc-hifiberry-dacplus.o +@@ -78,4 +79,4 @@ obj-$(CONFIG_SND_BCM2708_SOC_FE_PI_AUDIO + obj-$(CONFIG_SND_RPI_SIMPLE_SOUNDCARD) += snd-soc-rpi-simple-soundcard.o + obj-$(CONFIG_SND_RPI_WM8804_SOUNDCARD) += snd-soc-rpi-wm8804-soundcard.o + obj-$(CONFIG_SND_BCM2708_SOC_PIFI_40) += snd-soc-pifi-40.o +- ++obj-$(CONFIG_SND_BCM2708_SOC_CHIPDIP_DAC) += snd-soc-chipdip-dac.o +--- /dev/null ++++ b/sound/soc/bcm/chipdip-dac.c +@@ -0,0 +1,275 @@ ++/* ++ * ASoC Driver for ChipDip DAC ++ * ++ * Author: Evgenij Sapunov ++ * Copyright 2021 ++ * based on code by Milan Neskovic <info@justboom.co> ++ * based on code by Jaikumar <jaikumar@cem-solutions.net> ++ * ++ * Thanks to Phil Elwell (pelwell) for help. ++ * ++ * 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. ++ * ++ * This program is distributed in the hope that it will be useful, but ++ * WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU ++ * General Public License for more details. ++ */ ++ ++#include <linux/module.h> ++#include <linux/gpio/consumer.h> ++#include <linux/platform_device.h> ++#include <linux/delay.h> ++ ++#include <sound/core.h> ++#include <sound/pcm.h> ++#include <sound/pcm_params.h> ++#include <sound/soc.h> ++#include <sound/jack.h> ++ ++#define SR_BIT_0 0 //sample rate bits ++#define SR_BIT_1 1 ++#define SR_BIT_2 2 ++#define BD_BIT_0 3 //bit depth bits ++#define BD_BIT_1 4 ++ ++#define SAMPLE_RATE_MASK_44_1 0 ++#define SAMPLE_RATE_MASK_48 (1 << SR_BIT_0) ++#define SAMPLE_RATE_MASK_88_2 ((1 << SR_BIT_2) | (1 << SR_BIT_1)) ++#define SAMPLE_RATE_MASK_96 (1 << SR_BIT_1) ++#define SAMPLE_RATE_MASK_176_4 ((1 << SR_BIT_2) | (1 << SR_BIT_1) | (1 << SR_BIT_0)) ++#define SAMPLE_RATE_MASK_192 ((1 << SR_BIT_1) | (1 << SR_BIT_0)) ++#define SAMPLE_RATE_MASK ((1 << SR_BIT_2) | (1 << SR_BIT_1) | (1 << SR_BIT_0)) ++ ++#define BIT_DEPTH_MASK_16 0 ++#define BIT_DEPTH_MASK_24 (1 << BD_BIT_0) ++#define BIT_DEPTH_MASK_32 (1 << BD_BIT_1) ++#define BIT_DEPTH_MASK ((1 << BD_BIT_1) | (1 << BD_BIT_0)) ++ ++#define MUTE_ACTIVE 0 ++#define MUTE_NOT_ACTIVE 1 ++ ++#define HW_PARAMS_GPIO_COUNT 5 ++ ++static struct gpio_desc *mute_gpio; ++static struct gpio_desc *sdwn_gpio; ++static struct gpio_desc *hw_params_gpios[HW_PARAMS_GPIO_COUNT]; ++static int current_width; ++static int current_rate; ++ ++static void snd_rpi_chipdip_dac_gpio_array_set(int value); ++static void snd_rpi_chipdip_dac_gpio_set(struct gpio_desc *gpio_item, int value); ++ ++static void snd_rpi_chipdip_dac_gpio_array_set(int value) ++{ ++ int i = 0; ++ ++ for (i = 0; i < HW_PARAMS_GPIO_COUNT; i++) ++ snd_rpi_chipdip_dac_gpio_set(hw_params_gpios[i], ((value >> i) & 1)); ++} ++ ++static void snd_rpi_chipdip_dac_gpio_set(struct gpio_desc *gpio_item, int value) ++{ ++ if (gpio_item) ++ gpiod_set_value_cansleep(gpio_item, value); ++} ++ ++static int snd_rpi_chipdip_dac_init(struct snd_soc_pcm_runtime *rtd) ++{ ++ return 0; ++} ++ ++static int snd_rpi_chipdip_dac_hw_params(struct snd_pcm_substream *substream, ++ struct snd_pcm_hw_params *params) ++{ ++ int ret = 0; ++ int gpio_change_pending = 0; ++ int sample_rate_state = 0; ++ int bit_depth_state = 0; ++ int param_value = params_width(params); ++ struct snd_soc_pcm_runtime *rtd = substream->private_data; ++ ++ ret = snd_soc_dai_set_bclk_ratio(asoc_rtd_to_cpu(rtd, 0), 2 * 32); ++ ++ if (current_width != param_value) { ++ current_width = param_value; ++ gpio_change_pending = 1; ++ ++ switch (param_value) { ++ case 16: ++ bit_depth_state = BIT_DEPTH_MASK_16; ++ break; ++ case 24: ++ bit_depth_state = BIT_DEPTH_MASK_24; ++ break; ++ case 32: ++ bit_depth_state = BIT_DEPTH_MASK_32; ++ break; ++ default: ++ return -EINVAL; ++ } ++ } ++ ++ param_value = params_rate(params); ++ if (current_rate != param_value) { ++ current_rate = param_value; ++ gpio_change_pending = 1; ++ ++ switch (param_value) { ++ case 44100: ++ sample_rate_state = SAMPLE_RATE_MASK_44_1; ++ break; ++ case 48000: ++ sample_rate_state = SAMPLE_RATE_MASK_48; ++ break; ++ case 88200: ++ sample_rate_state = SAMPLE_RATE_MASK_88_2; ++ break; ++ case 96000: ++ sample_rate_state = SAMPLE_RATE_MASK_96; ++ break; ++ case 176400: ++ sample_rate_state = SAMPLE_RATE_MASK_176_4; ++ break; ++ case 192000: ++ sample_rate_state = SAMPLE_RATE_MASK_192; ++ break; ++ default: ++ return -EINVAL; ++ } ++ } ++ ++ if (gpio_change_pending) { ++ snd_rpi_chipdip_dac_gpio_set(mute_gpio, MUTE_ACTIVE); ++ snd_rpi_chipdip_dac_gpio_array_set(bit_depth_state | sample_rate_state); ++ msleep(300); ++ snd_rpi_chipdip_dac_gpio_set(mute_gpio, MUTE_NOT_ACTIVE); ++ } ++ ++ return ret; ++} ++ ++static int snd_rpi_chipdip_dac_startup(struct snd_pcm_substream *substream) ++{ ++ return 0; ++} ++ ++static void snd_rpi_chipdip_dac_shutdown(struct snd_pcm_substream *substream) ++{ ++ ++} ++ ++/* machine stream operations */ ++static struct snd_soc_ops snd_rpi_chipdip_dac_ops = { ++ .hw_params = snd_rpi_chipdip_dac_hw_params, ++ .startup = snd_rpi_chipdip_dac_startup, ++ .shutdown = snd_rpi_chipdip_dac_shutdown, ++}; ++ ++SND_SOC_DAILINK_DEFS(hifi, ++ DAILINK_COMP_ARRAY(COMP_CPU("bcm2708-i2s.0")), ++ DAILINK_COMP_ARRAY(COMP_CODEC("spdif-transmitter", "dit-hifi")), ++ DAILINK_COMP_ARRAY(COMP_PLATFORM("bcm2708-i2s.0"))); ++ ++static struct snd_soc_dai_link snd_rpi_chipdip_dac_dai[] = { ++{ ++ .name = "ChipDip DAC", ++ .stream_name = "ChipDip DAC HiFi", ++ .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | ++ SND_SOC_DAIFMT_CBM_CFM, ++ .ops = &snd_rpi_chipdip_dac_ops, ++ .init = snd_rpi_chipdip_dac_init, ++ SND_SOC_DAILINK_REG(hifi), ++}, ++}; ++ ++/* audio machine driver */ ++static struct snd_soc_card snd_rpi_chipdip_dac = { ++ .name = "ChipDipDAC", ++ .driver_name = "ChipdipDac", ++ .owner = THIS_MODULE, ++ .dai_link = snd_rpi_chipdip_dac_dai, ++ .num_links = ARRAY_SIZE(snd_rpi_chipdip_dac_dai), ++}; ++ ++static int snd_rpi_chipdip_dac_probe(struct platform_device *pdev) ++{ ++ int ret = 0; ++ int i = 0; ++ ++ snd_rpi_chipdip_dac.dev = &pdev->dev; ++ ++ if (pdev->dev.of_node) { ++ struct device_node *i2s_node; ++ struct snd_soc_dai_link *dai = &snd_rpi_chipdip_dac_dai[0]; ++ i2s_node = of_parse_phandle(pdev->dev.of_node, ++ "i2s-controller", 0); ++ ++ if (i2s_node) { ++ dai->cpus->dai_name = NULL; ++ dai->cpus->of_node = i2s_node; ++ dai->platforms->name = NULL; ++ dai->platforms->of_node = i2s_node; ++ } ++ } ++ ++ hw_params_gpios[SR_BIT_0] = devm_gpiod_get_optional(&pdev->dev, "sr0", GPIOD_OUT_LOW); ++ hw_params_gpios[SR_BIT_1] = devm_gpiod_get_optional(&pdev->dev, "sr1", GPIOD_OUT_LOW); ++ hw_params_gpios[SR_BIT_2] = devm_gpiod_get_optional(&pdev->dev, "sr2", GPIOD_OUT_LOW); ++ hw_params_gpios[BD_BIT_0] = devm_gpiod_get_optional(&pdev->dev, "res0", GPIOD_OUT_LOW); ++ hw_params_gpios[BD_BIT_1] = devm_gpiod_get_optional(&pdev->dev, "res1", GPIOD_OUT_LOW); ++ mute_gpio = devm_gpiod_get_optional(&pdev->dev, "mute", GPIOD_OUT_LOW); ++ sdwn_gpio = devm_gpiod_get_optional(&pdev->dev, "sdwn", GPIOD_OUT_HIGH); ++ ++ for (i = 0; i < HW_PARAMS_GPIO_COUNT; i++) { ++ if (IS_ERR(hw_params_gpios[i])) { ++ ret = PTR_ERR(hw_params_gpios[i]); ++ dev_err(&pdev->dev, "failed to get hw_params gpio: %d\n", ret); ++ return ret; ++ } ++ } ++ ++ if (IS_ERR(mute_gpio)) { ++ ret = PTR_ERR(mute_gpio); ++ dev_err(&pdev->dev, "failed to get mute gpio: %d\n", ret); ++ return ret; ++ } ++ ++ if (IS_ERR(sdwn_gpio)) { ++ ret = PTR_ERR(sdwn_gpio); ++ dev_err(&pdev->dev, "failed to get sdwn gpio: %d\n", ret); ++ return ret; ++ } ++ ++ snd_rpi_chipdip_dac_gpio_set(sdwn_gpio, 1); ++ ++ ret = devm_snd_soc_register_card(&pdev->dev, &snd_rpi_chipdip_dac); ++ if (ret && ret != -EPROBE_DEFER) ++ dev_err(&pdev->dev, ++ "snd_soc_register_card() failed: %d\n", ret); ++ ++ return ret; ++} ++ ++static const struct of_device_id snd_rpi_chipdip_dac_of_match[] = { ++ { .compatible = "chipdip,chipdip-dac", }, ++ {}, ++}; ++MODULE_DEVICE_TABLE(of, snd_rpi_chipdip_dac_of_match); ++ ++static struct platform_driver snd_rpi_chipdip_dac_driver = { ++ .driver = { ++ .name = "snd-rpi-chipdip-dac", ++ .owner = THIS_MODULE, ++ .of_match_table = snd_rpi_chipdip_dac_of_match, ++ }, ++ .probe = snd_rpi_chipdip_dac_probe, ++}; ++ ++module_platform_driver(snd_rpi_chipdip_dac_driver); ++ ++MODULE_AUTHOR("Evgenij Sapunov <evgenij.sapunov@chipdip.ru>"); ++MODULE_DESCRIPTION("ASoC Driver for ChipDip DAC"); ++MODULE_LICENSE("GPL v2"); |