From: Inha Song ideal.song@samsung.com

This patch adds LPASS driver. The LPASS (Low Power Audio Subsystem) is a special subsystem that supports audio playback with low power consumption. This is a minimal driver which prepares resources for IP blocks like I2S, audio DMA and UART. Also system power ops are added to ensure the Audio Subsystem is operational after system suspend/resume cycle.

Signed-off-by: Inha Song ideal.song@samsung.com Signed-off-by: Beomho Seo beomho.seo@samsung.com Signed-off-by: Sylwester Nawrocki s.nawrocki@samsung.com --- sound/soc/samsung/Makefile | 2 + sound/soc/samsung/lpass.c | 162 +++++++++++++++++++++++++++++++++++++++++++++ sound/soc/samsung/lpass.h | 47 +++++++++++++ 3 files changed, 211 insertions(+) create mode 100644 sound/soc/samsung/lpass.c create mode 100644 sound/soc/samsung/lpass.h

diff --git a/sound/soc/samsung/Makefile b/sound/soc/samsung/Makefile index 5d03f5c..2b919d5 100644 --- a/sound/soc/samsung/Makefile +++ b/sound/soc/samsung/Makefile @@ -8,6 +8,7 @@ snd-soc-s3c-i2s-v2-objs := s3c-i2s-v2.o snd-soc-samsung-spdif-objs := spdif.o snd-soc-pcm-objs := pcm.o snd-soc-i2s-objs := i2s.o +snd-soc-lpass-objs := lpass.o

obj-$(CONFIG_SND_SOC_SAMSUNG) += snd-soc-s3c-dma.o obj-$(CONFIG_SND_S3C24XX_I2S) += snd-soc-s3c24xx-i2s.o @@ -18,6 +19,7 @@ obj-$(CONFIG_SND_SAMSUNG_SPDIF) += snd-soc-samsung-spdif.o obj-$(CONFIG_SND_SAMSUNG_PCM) += snd-soc-pcm.o obj-$(CONFIG_SND_SAMSUNG_I2S) += snd-soc-i2s.o obj-$(CONFIG_SND_SAMSUNG_I2S) += snd-soc-idma.o +obj-$(CONFIG_SND_SAMSUNG_AUDSS) += snd-soc-lpass.o

# S3C24XX Machine Support snd-soc-jive-wm8750-objs := jive_wm8750.o diff --git a/sound/soc/samsung/lpass.c b/sound/soc/samsung/lpass.c new file mode 100644 index 0000000..57198cf --- /dev/null +++ b/sound/soc/samsung/lpass.c @@ -0,0 +1,162 @@ +/* + * Copyright (C) 2015 - 2016 Samsung Electronics Co., Ltd. + * Inha Song ideal.song@samsung.com + * + * Low Power Audio Subsystem driver for Samsung Exynos + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ + +#include <linux/delay.h> +#include <linux/io.h> +#include <linux/module.h> +#include <linux/of.h> +#include <sound/soc.h> +#include <linux/mfd/syscon.h> +#include <linux/regmap.h> + +#include "lpass.h" + +#define EXYNOS5433_PAD_RETENTION_AUD_OPTION_OFFSET 0x3028 +#define EXYNOS5433_INITIATE_WAKEUP_FROM_LOWPWR_MASK BIT(28) + +struct lpass_info { + struct platform_device *pdev; + void __iomem *reg_sfr; + struct regmap *reg_pmu; +}; + +static void lpass_core_sw_reset(struct lpass_info *lpass, int bit) +{ + unsigned int val; + + val = readl(lpass->reg_sfr + SFR_LPASS_CORE_SW_RESET); + + val &= ~(1 << bit); + writel(val, lpass->reg_sfr + SFR_LPASS_CORE_SW_RESET); + + udelay(100); + + val |= 1 << bit; + writel(val, lpass->reg_sfr + SFR_LPASS_CORE_SW_RESET); +} + +static void lpass_enable(struct lpass_info *lpass) +{ + if (!lpass->reg_pmu) + return; + + /* Unmasks SFR, DMA, I2S Interrupt */ + writel(LPASS_INTR_SFR | LPASS_INTR_DMA | LPASS_INTR_I2S, + lpass->reg_sfr + SFR_LPASS_INTR_CA5_MASK); + + writel(LPASS_INTR_DMA | LPASS_INTR_I2S | LPASS_INTR_SFR + | LPASS_INTR_UART, + lpass->reg_sfr + SFR_LPASS_INTR_CPU_MASK); + + /* Activate related PADs from retention state */ + regmap_write(lpass->reg_pmu, + EXYNOS5433_PAD_RETENTION_AUD_OPTION_OFFSET, + EXYNOS5433_INITIATE_WAKEUP_FROM_LOWPWR_MASK); + + lpass_core_sw_reset(lpass, SW_RESET_I2S); + lpass_core_sw_reset(lpass, SW_RESET_DMA); + lpass_core_sw_reset(lpass, SW_RESET_MEM); +} + +static void lpass_disable(struct lpass_info *lpass) +{ + if (!lpass->reg_pmu) + return; + + /* Masks SFR, DMA, I2S Interrupt */ + writel(0, lpass->reg_sfr + SFR_LPASS_INTR_CA5_MASK); + + writel(0, lpass->reg_sfr + SFR_LPASS_INTR_CPU_MASK); + + /* Deactivate related PADs from retention state */ + regmap_write(lpass->reg_pmu, + EXYNOS5433_PAD_RETENTION_AUD_OPTION_OFFSET, 0); +} + +static int lpass_probe(struct platform_device *pdev) +{ + struct lpass_info *lpass; + struct device *dev = &pdev->dev; + struct resource *res; + + if (!dev->of_node) { + dev_err(dev, "Failed to get DT node\n"); + return -ENODEV; + } + + lpass = devm_kzalloc(dev, sizeof(*lpass), GFP_KERNEL); + if (!lpass) + return -ENOMEM; + + lpass->pdev = pdev; + platform_set_drvdata(pdev, lpass); + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + lpass->reg_sfr = devm_ioremap_resource(dev, res); + if (IS_ERR(lpass->reg_sfr)) + return PTR_ERR(lpass->reg_sfr); + + lpass->reg_pmu = syscon_regmap_lookup_by_phandle(dev->of_node, + "samsung,pmu-syscon"); + if (IS_ERR(lpass->reg_pmu)) { + dev_err(dev, "Failed to lookup PMU regmap\n"); + return PTR_ERR(lpass->reg_pmu); + } + + lpass_enable(lpass); + + return 0; +} + +static int lpass_suspend(struct device *dev) +{ + struct lpass_info *lpass = dev_get_drvdata(dev); + + lpass_disable(lpass); + + return 0; +} + +static int lpass_resume(struct device *dev) +{ + struct lpass_info *lpass = dev_get_drvdata(dev); + + lpass_enable(lpass); + + return 0; +} + +static const struct of_device_id lpass_of_match[] = { + { .compatible = "samsung,exynos5433-lpass", }, + { }, +}; +MODULE_DEVICE_TABLE(of, lpass_of_match); + +static const struct dev_pm_ops lpass_pm_ops = { + .suspend = lpass_suspend, + .resume = lpass_resume, +}; + +static struct platform_driver lpass_driver = { + .driver = { + .name = "samsung-lpass", + .pm = &lpass_pm_ops, + .of_match_table = lpass_of_match, + }, + .probe = lpass_probe, +}; + +module_platform_driver(lpass_driver); + +MODULE_AUTHOR("Inha Song ideal.song@samsung.com"); +MODULE_DESCRIPTION("Samsung Low Power Audio Subsystem (LPASS) driver"); +MODULE_LICENSE("GPL v2"); diff --git a/sound/soc/samsung/lpass.h b/sound/soc/samsung/lpass.h new file mode 100644 index 0000000..59179d6 --- /dev/null +++ b/sound/soc/samsung/lpass.h @@ -0,0 +1,47 @@ +/* + * Copyright (C) 2015 - 2016 Samsung Electronics Co., Ltd. + * Inha Song ideal.song@samsung.com + * + * Low Power Audio Subsystem driver for Samsung Exynos + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ +#ifndef SND_SOC_SAMSUNG_LPASS_H_ +#define SND_SOC_SAMSUNG_LPASS_H_ + +/* SFR */ +#define SFR_LPASS_CORE_SW_RESET (0x08) +#define SFR_LPASS_INTR_CA5_MASK (0x48) +#define SFR_LPASS_INTR_CPU_MASK (0x58) + +/* SW_RESET */ +#define LPASS_SW_RESET_CA5 (1 << 0) +#define LPASS_SW_RESET_SB (1 << 11) + +/* Interrupt mask */ +#define LPASS_INTR_APM (1 << 9) +#define LPASS_INTR_MIF (1 << 8) +#define LPASS_INTR_TIMER (1 << 7) +#define LPASS_INTR_DMA (1 << 6) +#define LPASS_INTR_GPIO (1 << 5) +#define LPASS_INTR_I2S (1 << 4) +#define LPASS_INTR_PCM (1 << 3) +#define LPASS_INTR_SB (1 << 2) +#define LPASS_INTR_UART (1 << 1) +#define LPASS_INTR_SFR (1 << 0) + +/* SW Reset bit */ +enum { + SW_RESET_DMA = 0, + SW_RESET_MEM, + SW_RESET_TIMER, + SW_RESET_I2S = 8, + SW_RESET_PCM, + SW_RESET_UART, + SW_RESET_SLIMBUS, +}; + +#endif /* SND_SOC_SAMSUNG_LPASS_H_ */

This patch add documentation of the DT bindings for the Samsung Exynos SoC Low Power Audio Subsystem.

Signed-off-by: Sylwester Nawrocki s.nawrocki@samsung.com --- .../devicetree/bindings/sound/samsung,exynos5433-lpass.txt | 8 ++++++++ 1 file changed, 8 insertions(+) create mode 100644 Documentation/devicetree/bindings/sound/samsung,exynos5433-lpass.txt

diff --git a/Documentation/devicetree/bindings/sound/samsung,exynos5433-lpass.txt b/Documentation/devicetree/bindings/sound/samsung,exynos5433-lpass.txt new file mode 100644 index 0000000..4beef25 --- /dev/null +++ b/Documentation/devicetree/bindings/sound/samsung,exynos5433-lpass.txt @@ -0,0 +1,8 @@ + +Samsung Exynos SoC Low Power Audio Subsystem (LPASS) + +Required properties: + + - compatible : "samsung,exynos5433-lpass" + - reg : should contain the LPASS SFR region location and size + - samsung,pmu-syscon : the phandle to the Power Management Unit node

This patch adds driver for the MAX98504 speaker amplifier. The MAX98504 is a high efficiency mono class D amplifier that features an integrated boost converter with voltage and current sensing ADCs for Dynamic Speaker Management. This driver does not include support for the I2S DAI, as we wouldn't be able to test such code in a hardware configuration where the amplifier has only wired the analogue input.

Signed-off-by: Inha Song ideal.song@samsung.com [k.kozlowski: rebased on 4.1] Signed-off-by: Krzysztof Kozlowski k.kozlowski@samsung.com [s.nawrocki: removed unused macro definitions and regulator handling code, rewrote regmap config code, added support for speaker enable and global chip enable through DAPM, rewritten as component driver, redesigned DT bindings] Signed-off-by: Sylwester Nawrocki s.nawrocki@samsung.com --- sound/soc/codecs/Kconfig | 4 + sound/soc/codecs/Makefile | 2 + sound/soc/codecs/max98504.c | 241 ++++++++++++++++++++++++++++++++++++++++++++ sound/soc/codecs/max98504.h | 94 +++++++++++++++++ 4 files changed, 341 insertions(+) create mode 100644 sound/soc/codecs/max98504.c create mode 100644 sound/soc/codecs/max98504.h

diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig index c923c96..46853b2 100644 --- a/sound/soc/codecs/Kconfig +++ b/sound/soc/codecs/Kconfig @@ -552,6 +552,10 @@ config SND_SOC_MAX98357A config SND_SOC_MAX98371 tristate

+config SND_SOC_MAX98504 + tristate "Maxim MAX98504 speaker amplifier" + depends on I2C + config SND_SOC_MAX9867 tristate

diff --git a/sound/soc/codecs/Makefile b/sound/soc/codecs/Makefile index 1264fa4..09d581c 100644 --- a/sound/soc/codecs/Makefile +++ b/sound/soc/codecs/Makefile @@ -213,6 +213,7 @@ snd-soc-wm-hubs-objs := wm_hubs.o

# Amp snd-soc-max9877-objs := max9877.o +snd-soc-max98504-objs := max98504.o snd-soc-tpa6130a2-objs := tpa6130a2.o snd-soc-tas2552-objs := tas2552.o

@@ -429,4 +430,5 @@ obj-$(CONFIG_SND_SOC_WM_HUBS) += snd-soc-wm-hubs.o

# Amp obj-$(CONFIG_SND_SOC_MAX9877) += snd-soc-max9877.o +obj-$(CONFIG_SND_SOC_MAX98504) += snd-soc-max98504.o obj-$(CONFIG_SND_SOC_TPA6130A2) += snd-soc-tpa6130a2.o diff --git a/sound/soc/codecs/max98504.c b/sound/soc/codecs/max98504.c new file mode 100644 index 0000000..15035e1 --- /dev/null +++ b/sound/soc/codecs/max98504.c @@ -0,0 +1,241 @@ +/* + * MAX98504 ALSA SoC Audio driver + * + * Copyright 2013 - 2014 Maxim Integrated Products + * Copyright 2016 Samsung Electronics Co., Ltd. + * + * 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/i2c.h> +#include <sound/soc.h> +#include <linux/slab.h> +#include <linux/delay.h> + +#include "max98504.h" + +static struct reg_default max98504_reg_defaults[] = { + { 0x01, 0}, + { 0x02, 0}, + { 0x03, 0}, + { 0x04, 0}, + { 0x10, 0}, + { 0x11, 0}, + { 0x12, 0}, + { 0x13, 0}, + { 0x14, 0}, + { 0x15, 0}, + { 0x16, 0}, + { 0x17, 0}, + { 0x18, 0}, + { 0x19, 0}, + { 0x1A, 0}, + { 0x20, 0}, + { 0x21, 0}, + { 0x22, 0}, + { 0x23, 0}, + { 0x24, 0}, + { 0x25, 0}, + { 0x26, 0}, + { 0x27, 0}, + { 0x28, 0}, + { 0x30, 0}, + { 0x31, 0}, + { 0x32, 0}, + { 0x33, 0}, + { 0x34, 0}, + { 0x35, 0}, + { 0x36, 0}, + { 0x37, 0}, + { 0x38, 0}, + { 0x39, 0}, + { 0x40, 0}, + { 0x41, 0}, +}; + +static bool max98504_volatile_register(struct device *dev, unsigned int reg) +{ + switch (reg) { + case MAX98504_REG_INTERRUPT_STATUS: + case MAX98504_REG_INTERRUPT_FLAGS: + case MAX98504_REG_INTERRUPT_FLAG_CLEARS: + case MAX98504_REG_WATCHDOG_CLEAR: + case MAX98504_REG_GLOBAL_ENABLE: + case MAX98504_REG_SOFTWARE_RESET: + return true; + default: + return false; + } +} + +static bool max98504_readable_register(struct device *dev, unsigned int reg) +{ + switch (reg) { + case MAX98504_REG_SOFTWARE_RESET: + case MAX98504_REG_WATCHDOG_CLEAR: + case MAX98504_REG_INTERRUPT_FLAG_CLEARS: + return false; + default: + return true; + } +} + +static int max98504_probe(struct max98504_priv *max98504) +{ + struct regmap *map = max98504->regmap; + + /* Software reset */ + regmap_write(map, MAX98504_REG_SOFTWARE_RESET, 0x01); + msleep(20); + + /* DAI PCM/PDM Rx configuration */ + switch (max98504->rx_path) { + case MODE_RX_PCM: + regmap_write(map, MAX98504_REG_PCM_RX_ENABLE, + max98504->rx_ch_enable); + break; + case MODE_RX_PDM0...MODE_RX_PDM1: + regmap_write(map, MAX98504_REG_PDM_RX_ENABLE, + M98504_PDM_RX_EN_MASK); + break; + default: + /* Analog input, disable PCM, PDM Rx */ + regmap_write(map, MAX98504_REG_PCM_RX_ENABLE, 0); + regmap_write(map, MAX98504_REG_PDM_RX_ENABLE, 0); + } + + regmap_write(map, MAX98504_REG_SPEAKER_SOURCE_SELECT, + max98504->rx_path & M98504_SPK_SRC_SEL_MASK); + + /* DAI PCM/PDM Tx configuration */ + switch (max98504->tx_path) { + case MODE_TX_PCM: + regmap_write(map, MAX98504_REG_PCM_TX_ENABLE, + max98504->tx_ch_enable); + regmap_write(map, MAX98504_REG_PCM_TX_CHANNEL_SOURCES, + max98504->tx_ch_source); + break; + default: + /* PDM Tx */ + regmap_write(map, MAX98504_REG_PDM_TX_ENABLE, + max98504->tx_ch_enable); + regmap_write(map, MAX98504_REG_PDM_TX_CONTROL, + max98504->tx_ch_source); + } + + regmap_write(map, MAX98504_REG_MEASUREMENT_ENABLE, 0x3); + + /* Brownout protection */ + regmap_write(map, MAX98504_REG_PVDD_BROWNOUT_ENABLE, 0x1); + regmap_write(map, MAX98504_REG_PVDD_BROWNOUT_CONFIG(1), 0x33); + regmap_write(map, MAX98504_REG_PVDD_BROWNOUT_CONFIG(2), 0x0a); + regmap_write(map, MAX98504_REG_PVDD_BROWNOUT_CONFIG(3), 0xff); + regmap_write(map, MAX98504_REG_PVDD_BROWNOUT_CONFIG(4), 0xff); + + return 0; +} + +static const struct snd_soc_dapm_route max98504_dapm_routes[] = { + { "SPKOUT", NULL, "Global Enable" }, +}; + +static const struct snd_soc_dapm_widget max98504_dapm_widgets[] = { + SND_SOC_DAPM_SUPPLY("Global Enable", MAX98504_REG_GLOBAL_ENABLE, + 0, 0, NULL, 0), + SND_SOC_DAPM_REG(snd_soc_dapm_spk, "SPKOUT", + MAX98504_REG_SPEAKER_ENABLE, 0, 1, 1, 0), +}; + +static const struct snd_soc_component_driver max98504_component_driver = { + .dapm_widgets = max98504_dapm_widgets, + .num_dapm_widgets = ARRAY_SIZE(max98504_dapm_widgets), + .dapm_routes = max98504_dapm_routes, + .num_dapm_routes = ARRAY_SIZE(max98504_dapm_routes), +}; + +static const struct regmap_config max98504_regmap = { + .reg_bits = 16, + .val_bits = 8, + .max_register = MAX98504_MAX_REGISTER, + .reg_defaults = max98504_reg_defaults, + .num_reg_defaults = ARRAY_SIZE(max98504_reg_defaults), + .volatile_reg = max98504_volatile_register, + .readable_reg = max98504_readable_register, + .cache_type = REGCACHE_RBTREE, +}; + +static void max98504_parse_dt(struct max98504_priv *max98504, + struct device_node *of_node) +{ + of_property_read_u32(of_node, "maxim,rx-path", + &max98504->rx_path); + + of_property_read_u32(of_node, "maxim,tx-path", + &max98504->tx_path); + + of_property_read_u32(of_node, "maxim,rx-channel-mask", + &max98504->rx_ch_enable); + + of_property_read_u32(of_node, "maxim,tx-channel-mask", + &max98504->tx_ch_enable); + + of_property_read_u32(of_node, "maxim,tx-channel-source", + &max98504->tx_ch_source); +} + +static int max98504_i2c_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct max98504_priv *max98504; + int ret; + + max98504 = devm_kzalloc(&client->dev, sizeof(*max98504), GFP_KERNEL); + if (!max98504) + return -ENOMEM; + + if (client->dev.of_node) + max98504_parse_dt(max98504, client->dev.of_node); + + max98504->regmap = devm_regmap_init_i2c(client, &max98504_regmap); + if (IS_ERR(max98504->regmap)) { + ret = PTR_ERR(max98504->regmap); + dev_err(&client->dev, "regmap initialization failed: %d\n", ret); + return ret; + } + + ret = max98504_probe(max98504); + if (ret < 0) + return ret; + + return devm_snd_soc_register_component(&client->dev, + &max98504_component_driver, NULL, 0); +} + +#ifdef CONFIG_OF +static const struct of_device_id max98504_of_match[] = { + { .compatible = "maxim,max98504", }, + { }, +}; +MODULE_DEVICE_TABLE(of, rt5651_of_match); +#endif + +static const struct i2c_device_id max98504_i2c_id[] = { + { "max98504" }, + { } +}; +MODULE_DEVICE_TABLE(i2c, max98504_i2c_id); + +static struct i2c_driver max98504_i2c_driver = { + .driver = { + .name = "max98504", + .of_match_table = of_match_ptr(max98504_of_match), + }, + .probe = max98504_i2c_probe, + .id_table = max98504_i2c_id, +}; +module_i2c_driver(max98504_i2c_driver); + +MODULE_DESCRIPTION("ASoC MAX98504 driver"); +MODULE_LICENSE("GPL"); diff --git a/sound/soc/codecs/max98504.h b/sound/soc/codecs/max98504.h new file mode 100644 index 0000000..fa176ffd --- /dev/null +++ b/sound/soc/codecs/max98504.h @@ -0,0 +1,94 @@ +/* + * MAX98504 ALSA SoC Audio driver + * + * Copyright 2011 - 2012 Maxim Integrated Products + * Copyright 2016 Samsung Electronics Co., Ltd. + * + * 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. + */ +#ifndef MAX98504_H_ +#define MAX98504_H_ + +/* + * MAX98504 Register Definitions + */ +#define MAX98504_REG_INTERRUPT_STATUS 0x01 +#define MAX98504_REG_INTERRUPT_FLAGS 0x02 +#define MAX98504_REG_INTERRUPT_ENABLE 0x03 +#define MAX98504_REG_INTERRUPT_FLAG_CLEARS 0x04 +#define MAX98504_REG_GPIO_ENABLE 0x10 +#define MAX98504_REG_GPIO_CONFIG 0x11 +#define MAX98504_REG_WATCHDOG_ENABLE 0x12 +#define MAX98504_REG_WATCHDOG_CONFIG 0x13 +#define MAX98504_REG_WATCHDOG_CLEAR 0x14 +#define MAX98504_REG_CLOCK_MONITOR_ENABLE 0x15 +#define MAX98504_REG_PVDD_BROWNOUT_ENABLE 0x16 +/* n = 1...4 */ +#define MAX98504_REG_PVDD_BROWNOUT_CONFIG(n) (0x17 + (n) - 1) +#define MAX98504_REG_PCM_RX_ENABLE 0x20 +#define MAX98504_REG_PCM_TX_ENABLE 0x21 +#define MAX98504_REG_PCM_TX_HIZ_CONTROL 0x22 +#define MAX98504_REG_PCM_TX_CHANNEL_SOURCES 0x23 +#define MAX98504_REG_PCM_MODE_CONFIG 0x24 +#define MAX98504_REG_PCM_DSP_CONFIG 0x25 +#define MAX98504_REG_PCM_CLOCK_SETUP 0x26 +#define MAX98504_REG_PCM_SAMPLE_RATE_SETUP 0x27 +#define MAX98504_REG_PCM_TO_SPEAKER_MONOMIX 0x28 +#define MAX98504_REG_PDM_TX_ENABLE 0x30 +#define MAX98504_REG_PDM_TX_HIZ_CONTROL 0x31 +#define MAX98504_REG_PDM_TX_CONTROL 0x32 +#define MAX98504_REG_PDM_RX_ENABLE 0x33 +#define MAX98504_REG_SPEAKER_ENABLE 0x34 +#define MAX98504_REG_SPEAKER_SOURCE_SELECT 0x35 +#define MAX98504_REG_MEASUREMENT_ENABLE 0x36 +#define MAX98504_REG_ANALOGUE_INPUT_GAIN 0x37 +#define MAX98504_REG_TEMPERATURE_LIMIT_CONFIG 0x38 +#define MAX98504_REG_ANALOGUE_SPARE 0x39 +#define MAX98504_REG_GLOBAL_ENABLE 0x40 +#define MAX98504_REG_SOFTWARE_RESET 0x41 +#define MAX98504_REG_REV_ID 0x7fff + +#define MAX98504_MAX_REGISTER 0x7fff + +/* Register Bit Fields */ + +/* MAX98504_REG_PCM_DSP_CONFIG */ +#define M98504_PCM_DSP_CFG_TX_DITH_EN_MASK (1 << 7) +#define M98504_PCM_DSP_CFG_MEAS_DCBLK_EN_MASK (1 << 6) +#define M98504_PCM_DSP_CFG_RX_DITH_EN_MASK (1 << 5) +#define M98504_PCM_DSP_CFG_RX_FLT_MODE_MASK (1 << 4) + +/* MAX98504_REG_PDM_RX_ENABLE */ +#define M98504_PDM_RX_EN_MASK (1 << 0) + +/* MAX98504_REG_SPEAKER_SOURCE_SELECT */ +#define M98504_SPK_SRC_SEL_MASK (0x3 << 0) +#define M98504_SPK_SRC_SEL_PDM_CH1 (0x3 << 0) +#define M98504_SPK_SRC_SEL_PDM_CH0 (0x2 << 0) +#define M98504_SPK_SRC_SEL_ANALOG (0x1 << 0) +#define M98504_SPK_SRC_SEL_PCM_MONOMIX (0x0 << 0) + +enum max98504_rx_path { + MODE_RX_PCM, + MODE_RX_AIN, + MODE_RX_PDM0, + MODE_RX_PDM1, +}; + +enum max98504_tx_path { + MODE_TX_PCM, + MODE_TX_PDM, +}; + +struct max98504_priv { + struct regmap *regmap; + u32 rx_path; + u32 tx_path; + u32 rx_ch_enable; + u32 tx_ch_enable; + u32 tx_ch_source; +}; + +#endif /* MAX98504_H_ */

From: Inha Song ideal.song@samsung.com

This patch adds the sound machine driver for TM2 board. The codec operates in master mode. So, reference to the codec master clock must be set. This machine driver supports SPK playback and Main Mic capture, BT and Voice call and external accessory.

Signed-off-by: Inha Song ideal.song@samsung.com [k.kozlowski: rebased on 4.1] Signed-off-by: Krzysztof Kozlowski k.kozlowski@samsung.com [s.nawrocki: rebased to 4.7, adjustment to the ASoC core changes, removed unused ops and direct calls to the max98504 function, added parsing of "samsung,speaker-amplifier" property] Signed-off-by: Sylwester Nawrocki s.nawrocki@samsung.com --- sound/soc/samsung/Kconfig | 13 + sound/soc/samsung/Makefile | 2 + sound/soc/samsung/tm2_wm5110.c | 553 +++++++++++++++++++++++++++++++++++++++++ 3 files changed, 568 insertions(+) create mode 100644 sound/soc/samsung/tm2_wm5110.c

diff --git a/sound/soc/samsung/Kconfig b/sound/soc/samsung/Kconfig index 7b722b0..475b25c 100644 --- a/sound/soc/samsung/Kconfig +++ b/sound/soc/samsung/Kconfig @@ -31,6 +31,9 @@ config SND_SAMSUNG_SPDIF config SND_SAMSUNG_I2S tristate

+config SND_SAMSUNG_AUDSS + tristate + config SND_SOC_SAMSUNG_NEO1973_WM8753 tristate "Audio support for Openmoko Neo1973 Smartphones (GTA02)" depends on SND_SOC_SAMSUNG && MACH_NEO1973_GTA02 @@ -229,3 +232,13 @@ config SND_SOC_ARNDALE_RT5631_ALC5631 depends on SND_SOC_SAMSUNG && I2C select SND_SAMSUNG_I2S select SND_SOC_RT5631 + +config SND_SOC_SAMSUNG_TM2_WM5110 + tristate "SoC I2S Audio support for WM5110 on TM2 board" + depends on SND_SOC_SAMSUNG + select SND_SOC_MAX98504A + select SND_SOC_WM5110 + select SND_SAMSUNG_I2S + select SND_SAMSUNG_AUDSS + help + Say Y if you want to add support for SoC audio on the TM2 board. diff --git a/sound/soc/samsung/Makefile b/sound/soc/samsung/Makefile index 2b919d5..9332991 100644 --- a/sound/soc/samsung/Makefile +++ b/sound/soc/samsung/Makefile @@ -46,6 +46,7 @@ snd-soc-lowland-objs := lowland.o snd-soc-littlemill-objs := littlemill.o snd-soc-bells-objs := bells.o snd-soc-arndale-rt5631-objs := arndale_rt5631.o +snd-soc-tm2-wm5110-objs := tm2_wm5110.o

obj-$(CONFIG_SND_SOC_SAMSUNG_JIVE_WM8750) += snd-soc-jive-wm8750.o obj-$(CONFIG_SND_SOC_SAMSUNG_NEO1973_WM8753) += snd-soc-neo1973-wm8753.o @@ -71,3 +72,4 @@ obj-$(CONFIG_SND_SOC_LOWLAND) += snd-soc-lowland.o obj-$(CONFIG_SND_SOC_LITTLEMILL) += snd-soc-littlemill.o obj-$(CONFIG_SND_SOC_BELLS) += snd-soc-bells.o obj-$(CONFIG_SND_SOC_ARNDALE_RT5631_ALC5631) += snd-soc-arndale-rt5631.o +obj-$(CONFIG_SND_SOC_SAMSUNG_TM2_WM5110) += snd-soc-tm2-wm5110.o diff --git a/sound/soc/samsung/tm2_wm5110.c b/sound/soc/samsung/tm2_wm5110.c new file mode 100644 index 0000000..7150958 --- /dev/null +++ b/sound/soc/samsung/tm2_wm5110.c @@ -0,0 +1,553 @@ +/* + * Copyright (C) 2015 - 2016 Samsung Electronics Co., Ltd. + * + * Author: Inha Song ideal.song@samsung.com + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ + +#include <linux/of.h> +#include <linux/of_gpio.h> +#include <linux/gpio.h> +#include <linux/module.h> +#include <linux/clk.h> +#include <sound/soc.h> +#include <sound/pcm_params.h> + +#include "i2s.h" +#include "lpass.h" +#include "../codecs/wm5110.h" + +struct tm2_machine_priv { + struct snd_soc_codec *codec; + struct clk *codec_mclk1; + struct clk *codec_mclk2; + + unsigned int sysclk_rate; + + int mic_bias; +}; + +static int tm2_start_sysclk(struct snd_soc_card *card) +{ + struct tm2_machine_priv *priv = snd_soc_card_get_drvdata(card); + struct snd_soc_codec *codec = priv->codec; + unsigned long mclk_rate = clk_get_rate(priv->codec_mclk1); + int ret; + + ret = clk_prepare_enable(priv->codec_mclk1); + if (ret < 0) { + dev_err(card->dev, "Failed to enable mclk: %d\n", ret); + return ret; + } + + ret = snd_soc_codec_set_pll(codec, WM5110_FLL1, + ARIZONA_FLL_SRC_MCLK1, + mclk_rate, + priv->sysclk_rate); + if (ret < 0) { + dev_err(codec->dev, "Failed to start FLL: %d\n", ret); + return ret; + } + + ret = snd_soc_codec_set_pll(codec, WM5110_FLL1_REFCLK, + ARIZONA_FLL_SRC_MCLK1, + mclk_rate, + priv->sysclk_rate); + if (ret < 0) { + dev_err(codec->dev, "Failed to set FLL1 Source: %d\n", ret); + return ret; + } + + ret = snd_soc_codec_set_sysclk(codec, ARIZONA_CLK_SYSCLK, + ARIZONA_CLK_SRC_FLL1, + priv->sysclk_rate, + SND_SOC_CLOCK_IN); + if (ret < 0) { + dev_err(codec->dev, "Failed to set SYSCLK Source: %d\n", ret); + return ret; + } + + return 0; +} + +static int tm2_stop_sysclk(struct snd_soc_card *card) +{ + struct tm2_machine_priv *priv = snd_soc_card_get_drvdata(card); + struct snd_soc_codec *codec = priv->codec; + int ret; + + ret = snd_soc_codec_set_pll(codec, WM5110_FLL1, 0, 0, 0); + if (ret < 0) { + dev_err(codec->dev, "Failed to stop FLL: %d\n", ret); + return ret; + } + + ret = snd_soc_codec_set_sysclk(codec, ARIZONA_CLK_SYSCLK, + ARIZONA_CLK_SRC_FLL1, 0, 0); + if (ret < 0) { + dev_err(codec->dev, "Failed to stop SYSCLK: %d\n", ret); + return ret; + } + + clk_disable_unprepare(priv->codec_mclk1); + + return 0; +} + +static int tm2_aif1_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_codec *codec = rtd->codec; + struct tm2_machine_priv *priv = snd_soc_card_get_drvdata(rtd->card); + int ret; + + dev_dbg(codec->dev, "params_rate: %d\n", params_rate(params)); + + /* + * SYSCLK Frequency is dependent on the Sample Rate. According to + * the sample rate, valid SYSCLK frequency is defined in manual. + * The manual recommand to select the highest possible SYSCLK + * frequency. + */ + switch (params_rate(params)) { + case 4000: + case 8000: + case 12000: + case 16000: + case 24000: + case 32000: + case 48000: + case 96000: + case 192000: + /* highest possible SYSCLK frequency: 147.456MHz */ + priv->sysclk_rate = 147456000U; + break; + case 11025: + case 22050: + case 44100: + case 88200: + case 176400: + /* highest possible SYSCLK frequency: 135.4752 MHz */ + priv->sysclk_rate = 135475200U; + break; + default: + dev_err(codec->dev, "Not supported sample rate: %d\n", + params_rate(params)); + return -EINVAL; + } + + ret = snd_soc_dai_set_sysclk(codec_dai, ARIZONA_CLK_SYSCLK, 0, 0); + if (ret < 0) { + dev_err(codec_dai->dev, "Failed to set SYSCLK: %d\n", ret); + return ret; + } + + return tm2_start_sysclk(rtd->card); +} + +static struct snd_soc_ops tm2_aif1_ops = { + .hw_params = tm2_aif1_hw_params, +}; + +static int tm2_aif2_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_codec *codec = rtd->codec; + struct tm2_machine_priv *priv = snd_soc_card_get_drvdata(rtd->card); + unsigned long mclk_rate = clk_get_rate(priv->codec_mclk1); + unsigned int asyncclk_rate; + int ret; + + dev_dbg(codec->dev, "params_rate: %d\n", params_rate(params)); + + /* + * ASYNC Frequency is dependent on the Sample Rate. According to + * the sample rate, valid ASYNC frequency is defined in manual. + * The manual recommand to select the highest possible ASYNC + * frequency. + */ + switch (params_rate(params)) { + case 8000: + case 12000: + case 16000: + /* highest possible ASYNCCLK frequency: 49.152MHz */ + asyncclk_rate = 49152000U; + break; + case 11025: + /* highest possible ASYNCCLK frequency: 45.1584 MHz */ + asyncclk_rate = 45158400U; + break; + default: + dev_err(codec->dev, "Not supported sample rate: %d\n", + params_rate(params)); + return -EINVAL; + } + + ret = snd_soc_codec_set_pll(codec, WM5110_FLL2, + ARIZONA_FLL_SRC_MCLK1, + mclk_rate, + asyncclk_rate); + if (ret < 0) { + dev_err(codec->dev, "Failed to start FLL: %d\n", ret); + return ret; + } + + ret = snd_soc_codec_set_pll(codec, WM5110_FLL2_REFCLK, + ARIZONA_FLL_SRC_MCLK1, + mclk_rate, + asyncclk_rate); + if (ret < 0) { + dev_err(codec->dev, "Failed to set FLL1 Source: %d\n", ret); + return ret; + } + + ret = snd_soc_dai_set_sysclk(codec_dai, ARIZONA_CLK_ASYNCCLK, 0, 0); + + if (ret < 0) { + dev_err(codec_dai->dev, "Failed to set ASYNCCLK: %d\n", ret); + return ret; + } + + ret = snd_soc_codec_set_sysclk(codec, ARIZONA_CLK_ASYNCCLK, + ARIZONA_CLK_SRC_FLL2, + asyncclk_rate, + SND_SOC_CLOCK_IN); + if (ret < 0) { + dev_err(codec->dev, "Failed to set ASYNCCLK Source: %d\n", ret); + return ret; + } + + return 0; +} + +static struct snd_soc_ops tm2_aif2_ops = { + .hw_params = tm2_aif2_hw_params, +}; + +static int tm2_mic_bias(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *kcontrol, int event) +{ + struct snd_soc_card *card = w->dapm->card; + struct tm2_machine_priv *priv = snd_soc_card_get_drvdata(card); + + switch (event) { + case SND_SOC_DAPM_PRE_PMU: + gpio_set_value(priv->mic_bias, 1); + break; + case SND_SOC_DAPM_POST_PMD: + gpio_set_value(priv->mic_bias, 0); + break; + } + + return 0; +} + +static int tm2_set_bias_level(struct snd_soc_card *card, + struct snd_soc_dapm_context *dapm, + enum snd_soc_bias_level level) +{ + struct snd_soc_pcm_runtime *rtd; + + rtd = snd_soc_get_pcm_runtime(card, card->dai_link[0].name); + + if (dapm->dev != rtd->codec_dai->dev) + return 0; + + switch (level) { + case SND_SOC_BIAS_STANDBY: + if (card->dapm.bias_level == SND_SOC_BIAS_OFF) + tm2_start_sysclk(card); + break; + case SND_SOC_BIAS_OFF: + tm2_stop_sysclk(card); + break; + case SND_SOC_BIAS_PREPARE: + break; + default: + break; + } + + card->dapm.bias_level = level; + + dev_dbg(card->dev, "%s: %d\n", __func__, level); + + return 0; +} + +static int tm2_late_probe(struct snd_soc_card *card) +{ + struct tm2_machine_priv *priv = snd_soc_card_get_drvdata(card); + struct snd_soc_pcm_runtime *rtd; + int ret; + + rtd = snd_soc_get_pcm_runtime(card, card->dai_link[0].name); + priv->codec = rtd->codec; + + ret = devm_gpio_request_one(card->dev, priv->mic_bias, + GPIOF_OUT_INIT_LOW, "MICBIAS_EN_AP"); + if (ret < 0) { + dev_err(card->dev, + "Failed to request mic_bias_gpio: %d\n", ret); + return ret; + } + + /* 32 kHz must be enabled for jack detection */ + if (!IS_ERR(priv->codec_mclk2)) + clk_prepare_enable(priv->codec_mclk2); + + gpio_direction_output(priv->mic_bias, 0); + + return 0; +} + +static int tm2_suspend_post(struct snd_soc_card *card) +{ + return tm2_stop_sysclk(card); +} + +static int tm2_resume_pre(struct snd_soc_card *card) +{ + return tm2_start_sysclk(card); +} + +static const struct snd_kcontrol_new card_controls[] = { + SOC_DAPM_PIN_SWITCH("HP"), + SOC_DAPM_PIN_SWITCH("SPK"), + SOC_DAPM_PIN_SWITCH("RCV"), + SOC_DAPM_PIN_SWITCH("VPS"), + SOC_DAPM_PIN_SWITCH("HDMI"), + + SOC_DAPM_PIN_SWITCH("Main Mic"), + SOC_DAPM_PIN_SWITCH("Sub Mic"), + SOC_DAPM_PIN_SWITCH("Third Mic"), + + SOC_DAPM_PIN_SWITCH("Headset Mic"), +}; + +const struct snd_soc_dapm_widget machine_dapm_widgets[] = { + SND_SOC_DAPM_HP("HP", NULL), + SND_SOC_DAPM_SPK("SPK", NULL), + SND_SOC_DAPM_SPK("RCV", NULL), + SND_SOC_DAPM_LINE("VPS", NULL), + SND_SOC_DAPM_LINE("HDMI", NULL), + + SND_SOC_DAPM_MIC("Main Mic", tm2_mic_bias), + SND_SOC_DAPM_MIC("Sub Mic", NULL), + SND_SOC_DAPM_MIC("Third Mic", NULL), + + SND_SOC_DAPM_MIC("Headset Mic", NULL), +}; + +static const struct snd_soc_component_driver tm2_component = { + .name = "tm2-audio", +}; + +static struct snd_soc_dai_driver tm2_ext_dai[] = { + { + .name = "Voice call", + .playback = { + .channels_min = 1, + .channels_max = 4, + .rate_min = 8000, + .rate_max = 48000, + .rates = (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 | + SNDRV_PCM_RATE_48000), + .formats = SNDRV_PCM_FMTBIT_S16_LE, + }, + .capture = { + .channels_min = 1, + .channels_max = 4, + .rate_min = 8000, + .rate_max = 48000, + .rates = (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 | + SNDRV_PCM_RATE_48000), + .formats = SNDRV_PCM_FMTBIT_S16_LE, + }, + }, + { + .name = "Bluetooth", + .playback = { + .channels_min = 1, + .channels_max = 4, + .rate_min = 8000, + .rate_max = 16000, + .rates = (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000), + .formats = SNDRV_PCM_FMTBIT_S16_LE, + }, + .capture = { + .channels_min = 1, + .channels_max = 2, + .rate_min = 8000, + .rate_max = 16000, + .rates = (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000), + .formats = SNDRV_PCM_FMTBIT_S16_LE, + }, + }, +}; + +static struct snd_soc_dai_link machine_dai[] = { + { + .name = "WM5110 AIF1", + .stream_name = "HiFi Primary", + .codec_dai_name = "wm5110-aif1", + .codec_name = "wm5110-codec", + .ops = &tm2_aif1_ops, + .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | + SND_SOC_DAIFMT_CBM_CFM, + }, { + .name = "WM5110 Voice", + .stream_name = "Voice call", + .codec_dai_name = "wm5110-aif2", + .codec_name = "wm5110-codec", + .ops = &tm2_aif2_ops, + .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | + SND_SOC_DAIFMT_CBM_CFM, + .ignore_suspend = 1, + }, { + .name = "WM5110 BT", + .stream_name = "Bluetooth", + .codec_dai_name = "wm5110-aif3", + .codec_name = "wm5110-codec", + .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | + SND_SOC_DAIFMT_CBM_CFM, + .ignore_suspend = 1, + } +}; + +static struct snd_soc_aux_dev tm2_speaker_amp_dev; + +static struct snd_soc_card tm2_card = { + .owner = THIS_MODULE, + + .dai_link = machine_dai, + .num_links = ARRAY_SIZE(machine_dai), + .controls = card_controls, + .num_controls = ARRAY_SIZE(card_controls), + .dapm_widgets = machine_dapm_widgets, + .num_dapm_widgets = ARRAY_SIZE(machine_dapm_widgets), + + .aux_dev = &tm2_speaker_amp_dev, + .num_aux_devs = 1, + + .late_probe = tm2_late_probe, + + .set_bias_level = tm2_set_bias_level, + + .suspend_post = tm2_suspend_post, + .resume_pre = tm2_resume_pre, +}; + +static int tm2_wm5110_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct snd_soc_card *card = &tm2_card; + struct snd_soc_dai_link *dai_link = card->dai_link; + struct tm2_machine_priv *priv; + int ret, i; + + if (!dev->of_node) { + dev_err(dev, "DT node is missing\n"); + return -ENODEV; + } + + priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + snd_soc_card_set_drvdata(card, priv); + card->dev = dev; + + ret = snd_soc_of_parse_card_name(card, "samsung,model"); + if (ret < 0) { + dev_err(dev, "Card name is not provided\n"); + return ret; + } + + ret = snd_soc_of_parse_audio_routing(card, "samsung,audio-routing"); + if (ret < 0) { + dev_err(dev, "Audio routing is not provided\n"); + return ret; + } + + tm2_speaker_amp_dev.codec_of_node = of_parse_phandle(dev->of_node, + "samsung,speaker-amplifier", 0); + if (!tm2_speaker_amp_dev.codec_of_node) { + dev_err(dev, "speaker-amplifier property parse error\n"); + return -EINVAL; + } + + for (i = 0; i < card->num_links; i++) { + dai_link[i].cpu_dai_name = NULL; + dai_link[i].cpu_name = NULL; + dai_link[i].cpu_of_node = of_parse_phandle(dev->of_node, + "samsung,i2s-controller", 0); + if (!dai_link[i].cpu_of_node) { + dev_err(dev, "i2s-controller property parse error\n"); + return -EINVAL; + } + + dai_link[i].platform_name = NULL; + dai_link[i].platform_of_node = dai_link[i].cpu_of_node; + } + + priv->codec_mclk1 = devm_clk_get(dev, "mclk1"); + if (IS_ERR(priv->codec_mclk1)) { + dev_err(dev, "Failed to get out clock\n"); + return PTR_ERR(priv->codec_mclk1); + } + + /* mclk2 is optional */ + priv->codec_mclk2 = devm_clk_get(dev, "mclk2"); + if (IS_ERR(priv->codec_mclk2)) + dev_err(dev, "Failed to get mclk2 clock\n"); + + priv->mic_bias = of_get_named_gpio(dev->of_node, "mic_bias_gpio", 0); + if (!gpio_is_valid(priv->mic_bias)) { + dev_err(dev, "Failed to get mic_bias_gpio\n"); + return -EINVAL; + } + + ret = devm_snd_soc_register_component(dev, &tm2_component, + tm2_ext_dai, ARRAY_SIZE(tm2_ext_dai)); + if (ret < 0) { + dev_err(dev, "Failed to register component: %d\n", ret); + return ret; + } + + ret = devm_snd_soc_register_card(dev, card); + if (ret < 0) { + dev_err(dev, "Failed to register card: %d\n", ret); + return ret; + } + + return 0; +} + +static const struct of_device_id tm2_wm5110_of_match[] = { + { .compatible = "samsung,tm2-audio" }, + { }, +}; +MODULE_DEVICE_TABLE(of, tm2_wm5110_of_match); + +static struct platform_driver tm2_wm5110_driver = { + .driver = { + .name = "tm2-audio", + .pm = &snd_soc_pm_ops, + .of_match_table = tm2_wm5110_of_match, + }, + .probe = tm2_wm5110_probe, +}; + +module_platform_driver(tm2_wm5110_driver); + +MODULE_AUTHOR("Inha Song ideal.song@samsung.com"); +MODULE_DESCRIPTION("ALSA SoC TM2 Audio Support"); +MODULE_LICENSE("GPL v2");