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ASoC: ssm4567: Add driver for Analog Devices SSM4567 amplifier
Analog Devices SSM4567 is a boost class-D audio amplifier. Signed-off-by: Anatol Pomozov <anatol.pomozov@gmail.com> Acked-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Anatol Pomozov
Mark Brown
parent
7d1311b93e
commit
1ee44ce030
15
Documentation/devicetree/bindings/sound/ssm4567.txt
Normal file
15
Documentation/devicetree/bindings/sound/ssm4567.txt
Normal file
@ -0,0 +1,15 @@
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Analog Devices SSM4567 audio amplifier
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This device supports I2C only.
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Required properties:
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- compatible : Must be "adi,ssm4567"
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- reg : the I2C address of the device. This will either be 0x34 (LR_SEL/ADDR connected to AGND),
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0x35 (LR_SEL/ADDR connected to IOVDD) or 0x36 (LR_SEL/ADDR open).
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Example:
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ssm4567: ssm4567@34 {
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compatible = "adi,ssm4567";
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reg = <0x34>;
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};
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@ -90,6 +90,7 @@ config SND_SOC_ALL_CODECS
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select SND_SOC_SSM2518 if I2C
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select SND_SOC_SSM2602_SPI if SPI_MASTER
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select SND_SOC_SSM2602_I2C if I2C
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select SND_SOC_SSM4567 if I2C
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select SND_SOC_STA32X if I2C
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select SND_SOC_STA350 if I2C
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select SND_SOC_STA529 if I2C
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@ -527,6 +528,10 @@ config SND_SOC_SSM2602_I2C
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select SND_SOC_SSM2602
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tristate
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config SND_SOC_SSM4567
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tristate "Analog Devices ssm4567 amplifier driver support"
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depends on I2C
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config SND_SOC_STA32X
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tristate
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@ -91,6 +91,7 @@ snd-soc-ssm2518-objs := ssm2518.o
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snd-soc-ssm2602-objs := ssm2602.o
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snd-soc-ssm2602-spi-objs := ssm2602-spi.o
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snd-soc-ssm2602-i2c-objs := ssm2602-i2c.o
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snd-soc-ssm4567-objs := ssm4567.o
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snd-soc-sta32x-objs := sta32x.o
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snd-soc-sta350-objs := sta350.o
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snd-soc-sta529-objs := sta529.o
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@ -258,6 +259,7 @@ obj-$(CONFIG_SND_SOC_SSM2518) += snd-soc-ssm2518.o
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obj-$(CONFIG_SND_SOC_SSM2602) += snd-soc-ssm2602.o
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obj-$(CONFIG_SND_SOC_SSM2602_SPI) += snd-soc-ssm2602-spi.o
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obj-$(CONFIG_SND_SOC_SSM2602_I2C) += snd-soc-ssm2602-i2c.o
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obj-$(CONFIG_SND_SOC_SSM4567) += snd-soc-ssm4567.o
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obj-$(CONFIG_SND_SOC_STA32X) += snd-soc-sta32x.o
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obj-$(CONFIG_SND_SOC_STA350) += snd-soc-sta350.o
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obj-$(CONFIG_SND_SOC_STA529) += snd-soc-sta529.o
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345
sound/soc/codecs/ssm4567.c
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345
sound/soc/codecs/ssm4567.c
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@ -0,0 +1,345 @@
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/*
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* SSM4567 amplifier audio driver
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*
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* Copyright 2014 Google Chromium project.
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* Author: Anatol Pomozov <anatol@chromium.org>
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*
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* Based on code copyright/by:
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* Copyright 2013 Analog Devices Inc.
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*
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* Licensed under the GPL-2.
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*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/i2c.h>
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#include <linux/regmap.h>
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#include <linux/slab.h>
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#include <sound/core.h>
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#include <sound/pcm.h>
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#include <sound/pcm_params.h>
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#include <sound/soc.h>
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#include <sound/initval.h>
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#include <sound/tlv.h>
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#define SSM4567_REG_POWER_CTRL 0x00
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#define SSM4567_REG_AMP_SNS_CTRL 0x01
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#define SSM4567_REG_DAC_CTRL 0x02
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#define SSM4567_REG_DAC_VOLUME 0x03
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#define SSM4567_REG_SAI_CTRL_1 0x04
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#define SSM4567_REG_SAI_CTRL_2 0x05
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#define SSM4567_REG_SAI_PLACEMENT_1 0x06
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#define SSM4567_REG_SAI_PLACEMENT_2 0x07
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#define SSM4567_REG_SAI_PLACEMENT_3 0x08
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#define SSM4567_REG_SAI_PLACEMENT_4 0x09
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#define SSM4567_REG_SAI_PLACEMENT_5 0x0a
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#define SSM4567_REG_SAI_PLACEMENT_6 0x0b
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#define SSM4567_REG_BATTERY_V_OUT 0x0c
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#define SSM4567_REG_LIMITER_CTRL_1 0x0d
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#define SSM4567_REG_LIMITER_CTRL_2 0x0e
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#define SSM4567_REG_LIMITER_CTRL_3 0x0f
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#define SSM4567_REG_STATUS_1 0x10
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#define SSM4567_REG_STATUS_2 0x11
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#define SSM4567_REG_FAULT_CTRL 0x12
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#define SSM4567_REG_PDM_CTRL 0x13
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#define SSM4567_REG_MCLK_RATIO 0x14
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#define SSM4567_REG_BOOST_CTRL_1 0x15
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#define SSM4567_REG_BOOST_CTRL_2 0x16
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#define SSM4567_REG_SOFT_RESET 0xff
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/* POWER_CTRL */
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#define SSM4567_POWER_APWDN_EN BIT(7)
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#define SSM4567_POWER_BSNS_PWDN BIT(6)
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#define SSM4567_POWER_VSNS_PWDN BIT(5)
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#define SSM4567_POWER_ISNS_PWDN BIT(4)
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#define SSM4567_POWER_BOOST_PWDN BIT(3)
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#define SSM4567_POWER_AMP_PWDN BIT(2)
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#define SSM4567_POWER_VBAT_ONLY BIT(1)
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#define SSM4567_POWER_SPWDN BIT(0)
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/* DAC_CTRL */
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#define SSM4567_DAC_HV BIT(7)
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#define SSM4567_DAC_MUTE BIT(6)
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#define SSM4567_DAC_HPF BIT(5)
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#define SSM4567_DAC_LPM BIT(4)
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#define SSM4567_DAC_FS_MASK 0x7
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#define SSM4567_DAC_FS_8000_12000 0x0
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#define SSM4567_DAC_FS_16000_24000 0x1
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#define SSM4567_DAC_FS_32000_48000 0x2
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#define SSM4567_DAC_FS_64000_96000 0x3
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#define SSM4567_DAC_FS_128000_192000 0x4
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struct ssm4567 {
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struct regmap *regmap;
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};
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static const struct reg_default ssm4567_reg_defaults[] = {
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{ SSM4567_REG_POWER_CTRL, 0x81 },
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{ SSM4567_REG_AMP_SNS_CTRL, 0x09 },
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{ SSM4567_REG_DAC_CTRL, 0x32 },
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{ SSM4567_REG_DAC_VOLUME, 0x40 },
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{ SSM4567_REG_SAI_CTRL_1, 0x00 },
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{ SSM4567_REG_SAI_CTRL_2, 0x08 },
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{ SSM4567_REG_SAI_PLACEMENT_1, 0x01 },
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{ SSM4567_REG_SAI_PLACEMENT_2, 0x20 },
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{ SSM4567_REG_SAI_PLACEMENT_3, 0x32 },
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{ SSM4567_REG_SAI_PLACEMENT_4, 0x07 },
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{ SSM4567_REG_SAI_PLACEMENT_5, 0x07 },
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{ SSM4567_REG_SAI_PLACEMENT_6, 0x07 },
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{ SSM4567_REG_BATTERY_V_OUT, 0x00 },
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{ SSM4567_REG_LIMITER_CTRL_1, 0xa4 },
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{ SSM4567_REG_LIMITER_CTRL_2, 0x73 },
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{ SSM4567_REG_LIMITER_CTRL_3, 0x00 },
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{ SSM4567_REG_STATUS_1, 0x00 },
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{ SSM4567_REG_STATUS_2, 0x00 },
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{ SSM4567_REG_FAULT_CTRL, 0x30 },
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{ SSM4567_REG_PDM_CTRL, 0x40 },
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{ SSM4567_REG_MCLK_RATIO, 0x11 },
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{ SSM4567_REG_BOOST_CTRL_1, 0x03 },
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{ SSM4567_REG_BOOST_CTRL_2, 0x00 },
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{ SSM4567_REG_SOFT_RESET, 0x00 },
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};
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static bool ssm4567_readable_reg(struct device *dev, unsigned int reg)
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{
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switch (reg) {
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case SSM4567_REG_POWER_CTRL ... SSM4567_REG_BOOST_CTRL_2:
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return true;
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default:
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return false;
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}
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}
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static bool ssm4567_writeable_reg(struct device *dev, unsigned int reg)
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{
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switch (reg) {
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case SSM4567_REG_POWER_CTRL ... SSM4567_REG_SAI_PLACEMENT_6:
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case SSM4567_REG_LIMITER_CTRL_1 ... SSM4567_REG_LIMITER_CTRL_3:
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case SSM4567_REG_FAULT_CTRL ... SSM4567_REG_BOOST_CTRL_2:
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/* The datasheet states that soft reset register is read-only,
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* but logically it is write-only. */
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case SSM4567_REG_SOFT_RESET:
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return true;
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default:
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return false;
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}
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}
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static bool ssm4567_volatile_reg(struct device *dev, unsigned int reg)
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{
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switch (reg) {
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case SSM4567_REG_BATTERY_V_OUT:
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case SSM4567_REG_STATUS_1 ... SSM4567_REG_STATUS_2:
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case SSM4567_REG_SOFT_RESET:
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return true;
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default:
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return false;
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}
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}
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static const DECLARE_TLV_DB_MINMAX_MUTE(ssm4567_vol_tlv, -7125, 2400);
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static const struct snd_kcontrol_new ssm4567_snd_controls[] = {
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SOC_SINGLE_TLV("Master Playback Volume", SSM4567_REG_DAC_VOLUME, 0,
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0xff, 1, ssm4567_vol_tlv),
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SOC_SINGLE("DAC Low Power Mode Switch", SSM4567_REG_DAC_CTRL, 4, 1, 0),
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};
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static const struct snd_soc_dapm_widget ssm4567_dapm_widgets[] = {
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SND_SOC_DAPM_DAC("DAC", "HiFi Playback", SSM4567_REG_POWER_CTRL, 2, 1),
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SND_SOC_DAPM_OUTPUT("OUT"),
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};
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static const struct snd_soc_dapm_route ssm4567_routes[] = {
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{ "OUT", NULL, "DAC" },
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};
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static int ssm4567_hw_params(struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
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{
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struct snd_soc_codec *codec = dai->codec;
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struct ssm4567 *ssm4567 = snd_soc_codec_get_drvdata(codec);
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unsigned int rate = params_rate(params);
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unsigned int dacfs;
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if (rate >= 8000 && rate <= 12000)
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dacfs = SSM4567_DAC_FS_8000_12000;
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else if (rate >= 16000 && rate <= 24000)
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dacfs = SSM4567_DAC_FS_16000_24000;
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else if (rate >= 32000 && rate <= 48000)
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dacfs = SSM4567_DAC_FS_32000_48000;
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else if (rate >= 64000 && rate <= 96000)
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dacfs = SSM4567_DAC_FS_64000_96000;
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else if (rate >= 64000 && rate <= 96000)
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dacfs = SSM4567_DAC_FS_64000_96000;
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else if (rate >= 128000 && rate <= 192000)
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dacfs = SSM4567_DAC_FS_128000_192000;
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else
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return -EINVAL;
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return regmap_update_bits(ssm4567->regmap, SSM4567_REG_DAC_CTRL,
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SSM4567_DAC_FS_MASK, dacfs);
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}
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static int ssm4567_mute(struct snd_soc_dai *dai, int mute)
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{
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struct ssm4567 *ssm4567 = snd_soc_codec_get_drvdata(dai->codec);
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unsigned int val;
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val = mute ? SSM4567_DAC_MUTE : 0;
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return regmap_update_bits(ssm4567->regmap, SSM4567_REG_DAC_CTRL,
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SSM4567_DAC_MUTE, val);
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}
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static int ssm4567_set_power(struct ssm4567 *ssm4567, bool enable)
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{
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int ret = 0;
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if (!enable) {
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ret = regmap_update_bits(ssm4567->regmap,
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SSM4567_REG_POWER_CTRL,
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SSM4567_POWER_SPWDN, SSM4567_POWER_SPWDN);
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regcache_mark_dirty(ssm4567->regmap);
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}
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regcache_cache_only(ssm4567->regmap, !enable);
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if (enable) {
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ret = regmap_update_bits(ssm4567->regmap,
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SSM4567_REG_POWER_CTRL,
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SSM4567_POWER_SPWDN, 0x00);
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regcache_sync(ssm4567->regmap);
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}
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return ret;
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}
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static int ssm4567_set_bias_level(struct snd_soc_codec *codec,
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enum snd_soc_bias_level level)
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{
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struct ssm4567 *ssm4567 = snd_soc_codec_get_drvdata(codec);
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int ret = 0;
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switch (level) {
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case SND_SOC_BIAS_ON:
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break;
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case SND_SOC_BIAS_PREPARE:
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break;
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case SND_SOC_BIAS_STANDBY:
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if (codec->dapm.bias_level == SND_SOC_BIAS_OFF)
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ret = ssm4567_set_power(ssm4567, true);
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break;
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case SND_SOC_BIAS_OFF:
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ret = ssm4567_set_power(ssm4567, false);
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break;
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}
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if (ret)
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return ret;
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codec->dapm.bias_level = level;
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return 0;
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}
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static const struct snd_soc_dai_ops ssm4567_dai_ops = {
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.hw_params = ssm4567_hw_params,
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.digital_mute = ssm4567_mute,
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};
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static struct snd_soc_dai_driver ssm4567_dai = {
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.name = "ssm4567-hifi",
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.playback = {
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.stream_name = "Playback",
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.channels_min = 1,
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.channels_max = 1,
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.rates = SNDRV_PCM_RATE_8000_192000,
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.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE |
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SNDRV_PCM_FMTBIT_S32,
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},
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.ops = &ssm4567_dai_ops,
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};
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static struct snd_soc_codec_driver ssm4567_codec_driver = {
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.set_bias_level = ssm4567_set_bias_level,
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.idle_bias_off = true,
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.controls = ssm4567_snd_controls,
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.num_controls = ARRAY_SIZE(ssm4567_snd_controls),
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.dapm_widgets = ssm4567_dapm_widgets,
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.num_dapm_widgets = ARRAY_SIZE(ssm4567_dapm_widgets),
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.dapm_routes = ssm4567_routes,
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.num_dapm_routes = ARRAY_SIZE(ssm4567_routes),
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};
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static const struct regmap_config ssm4567_regmap_config = {
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.val_bits = 8,
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.reg_bits = 8,
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.max_register = SSM4567_REG_SOFT_RESET,
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.readable_reg = ssm4567_readable_reg,
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.writeable_reg = ssm4567_writeable_reg,
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.volatile_reg = ssm4567_volatile_reg,
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.cache_type = REGCACHE_RBTREE,
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.reg_defaults = ssm4567_reg_defaults,
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.num_reg_defaults = ARRAY_SIZE(ssm4567_reg_defaults),
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};
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static int ssm4567_i2c_probe(struct i2c_client *i2c,
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const struct i2c_device_id *id)
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{
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struct ssm4567 *ssm4567;
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int ret;
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ssm4567 = devm_kzalloc(&i2c->dev, sizeof(*ssm4567), GFP_KERNEL);
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if (ssm4567 == NULL)
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return -ENOMEM;
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i2c_set_clientdata(i2c, ssm4567);
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ssm4567->regmap = devm_regmap_init_i2c(i2c, &ssm4567_regmap_config);
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if (IS_ERR(ssm4567->regmap))
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return PTR_ERR(ssm4567->regmap);
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ret = regmap_write(ssm4567->regmap, SSM4567_REG_SOFT_RESET, 0x00);
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if (ret)
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return ret;
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ret = ssm4567_set_power(ssm4567, false);
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if (ret)
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return ret;
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return snd_soc_register_codec(&i2c->dev, &ssm4567_codec_driver,
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&ssm4567_dai, 1);
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}
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static int ssm4567_i2c_remove(struct i2c_client *client)
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{
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snd_soc_unregister_codec(&client->dev);
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return 0;
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}
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static const struct i2c_device_id ssm4567_i2c_ids[] = {
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{ "ssm4567", 0 },
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{ }
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};
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MODULE_DEVICE_TABLE(i2c, ssm4567_i2c_ids);
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static struct i2c_driver ssm4567_driver = {
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.driver = {
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.name = "ssm4567",
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.owner = THIS_MODULE,
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},
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.probe = ssm4567_i2c_probe,
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.remove = ssm4567_i2c_remove,
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.id_table = ssm4567_i2c_ids,
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};
|
||||
module_i2c_driver(ssm4567_driver);
|
||||
|
||||
MODULE_DESCRIPTION("ASoC SSM4567 driver");
|
||||
MODULE_AUTHOR("Anatol Pomozov <anatol@chromium.org>");
|
||||
MODULE_LICENSE("GPL");
|
||||
Loading…
Reference in New Issue
Block a user