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c924dc68f7
There are a few known (minor) problems with having the support code for both I2C
and SPI in the same module:
* We need to be extra careful to make sure to not build the driver into the
kernel if one of the subsystems is build as a module (Currently only I2C
can be build as a module).
* The module init path error handling is rather ugly. E.g. what should be
done if either the SPI or the I2C driver fails to register? Most drivers
that implement SPI and I2C in the same module currently fallback to
undefined behavior in that case. Splitting the the driver into two
modules, one for each bus allows the registration of the other bus driver
to continue without problems if one of them fails.
This patch splits the ssm2602 driver into 3 modules. One core module that
implements the device logic, but is independent of the bus method used. And one
module for SPI and I2C each that registers the drivers and sets up the regmap
struct for the bus.
While we are at it also cleanup the include section of the ssm2602 driver and
remove unneeded includes.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@linaro.org>
140 lines
7.1 KiB
C
140 lines
7.1 KiB
C
/*
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* File: sound/soc/codecs/ssm2602.h
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* Author: Cliff Cai <Cliff.Cai@analog.com>
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*
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* Created: Tue June 06 2008
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*
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* Modified:
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* Copyright 2008 Analog Devices Inc.
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*
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* Bugs: Enter bugs at http://blackfin.uclinux.org/
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see the file COPYING, or write
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* to the Free Software Foundation, Inc.,
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* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef _SSM2602_H
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#define _SSM2602_H
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#include <linux/regmap.h>
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struct device;
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enum ssm2602_type {
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SSM2602,
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SSM2604,
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};
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extern const struct regmap_config ssm2602_regmap_config;
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int ssm2602_probe(struct device *dev, enum ssm2602_type type,
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struct regmap *regmap);
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/* SSM2602 Codec Register definitions */
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#define SSM2602_LINVOL 0x00
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#define SSM2602_RINVOL 0x01
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#define SSM2602_LOUT1V 0x02
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#define SSM2602_ROUT1V 0x03
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#define SSM2602_APANA 0x04
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#define SSM2602_APDIGI 0x05
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#define SSM2602_PWR 0x06
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#define SSM2602_IFACE 0x07
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#define SSM2602_SRATE 0x08
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#define SSM2602_ACTIVE 0x09
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#define SSM2602_RESET 0x0f
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/*SSM2602 Codec Register Field definitions
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*(Mask value to extract the corresponding Register field)
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*/
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/*Left ADC Volume Control (SSM2602_REG_LEFT_ADC_VOL)*/
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#define LINVOL_LIN_VOL 0x01F /* Left Channel PGA Volume control */
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#define LINVOL_LIN_ENABLE_MUTE 0x080 /* Left Channel Input Mute */
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#define LINVOL_LRIN_BOTH 0x100 /* Left Channel Line Input Volume update */
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/*Right ADC Volume Control (SSM2602_REG_RIGHT_ADC_VOL)*/
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#define RINVOL_RIN_VOL 0x01F /* Right Channel PGA Volume control */
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#define RINVOL_RIN_ENABLE_MUTE 0x080 /* Right Channel Input Mute */
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#define RINVOL_RLIN_BOTH 0x100 /* Right Channel Line Input Volume update */
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/*Left DAC Volume Control (SSM2602_REG_LEFT_DAC_VOL)*/
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#define LOUT1V_LHP_VOL 0x07F /* Left Channel Headphone volume control */
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#define LOUT1V_ENABLE_LZC 0x080 /* Left Channel Zero cross detect enable */
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#define LOUT1V_LRHP_BOTH 0x100 /* Left Channel Headphone volume update */
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/*Right DAC Volume Control (SSM2602_REG_RIGHT_DAC_VOL)*/
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#define ROUT1V_RHP_VOL 0x07F /* Right Channel Headphone volume control */
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#define ROUT1V_ENABLE_RZC 0x080 /* Right Channel Zero cross detect enable */
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#define ROUT1V_RLHP_BOTH 0x100 /* Right Channel Headphone volume update */
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/*Analogue Audio Path Control (SSM2602_REG_ANALOGUE_PATH)*/
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#define APANA_ENABLE_MIC_BOOST 0x001 /* Primary Microphone Amplifier gain booster control */
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#define APANA_ENABLE_MIC_MUTE 0x002 /* Microphone Mute Control */
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#define APANA_ADC_IN_SELECT 0x004 /* Microphone/Line IN select to ADC (1=MIC, 0=Line In) */
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#define APANA_ENABLE_BYPASS 0x008 /* Line input bypass to line output */
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#define APANA_SELECT_DAC 0x010 /* Select DAC (1=Select DAC, 0=Don't Select DAC) */
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#define APANA_ENABLE_SIDETONE 0x020 /* Enable/Disable Side Tone */
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#define APANA_SIDETONE_ATTN 0x0C0 /* Side Tone Attenuation */
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#define APANA_ENABLE_MIC_BOOST2 0x100 /* Secondary Microphone Amplifier gain booster control */
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/*Digital Audio Path Control (SSM2602_REG_DIGITAL_PATH)*/
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#define APDIGI_ENABLE_ADC_HPF 0x001 /* Enable/Disable ADC Highpass Filter */
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#define APDIGI_DE_EMPHASIS 0x006 /* De-Emphasis Control */
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#define APDIGI_ENABLE_DAC_MUTE 0x008 /* DAC Mute Control */
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#define APDIGI_STORE_OFFSET 0x010 /* Store/Clear DC offset when HPF is disabled */
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/*Power Down Control (SSM2602_REG_POWER)
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*(1=Enable PowerDown, 0=Disable PowerDown)
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*/
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#define PWR_LINE_IN_PDN 0x001 /* Line Input Power Down */
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#define PWR_MIC_PDN 0x002 /* Microphone Input & Bias Power Down */
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#define PWR_ADC_PDN 0x004 /* ADC Power Down */
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#define PWR_DAC_PDN 0x008 /* DAC Power Down */
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#define PWR_OUT_PDN 0x010 /* Outputs Power Down */
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#define PWR_OSC_PDN 0x020 /* Oscillator Power Down */
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#define PWR_CLK_OUT_PDN 0x040 /* CLKOUT Power Down */
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#define PWR_POWER_OFF 0x080 /* POWEROFF Mode */
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/*Digital Audio Interface Format (SSM2602_REG_DIGITAL_IFACE)*/
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#define IFACE_IFACE_FORMAT 0x003 /* Digital Audio input format control */
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#define IFACE_AUDIO_DATA_LEN 0x00C /* Audio Data word length control */
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#define IFACE_DAC_LR_POLARITY 0x010 /* Polarity Control for clocks in RJ,LJ and I2S modes */
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#define IFACE_DAC_LR_SWAP 0x020 /* Swap DAC data control */
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#define IFACE_ENABLE_MASTER 0x040 /* Enable/Disable Master Mode */
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#define IFACE_BCLK_INVERT 0x080 /* Bit Clock Inversion control */
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/*Sampling Control (SSM2602_REG_SAMPLING_CTRL)*/
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#define SRATE_ENABLE_USB_MODE 0x001 /* Enable/Disable USB Mode */
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#define SRATE_BOS_RATE 0x002 /* Base Over-Sampling rate */
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#define SRATE_SAMPLE_RATE 0x03C /* Clock setting condition (Sampling rate control) */
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#define SRATE_CORECLK_DIV2 0x040 /* Core Clock divider select */
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#define SRATE_CLKOUT_DIV2 0x080 /* Clock Out divider select */
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/*Active Control (SSM2602_REG_ACTIVE_CTRL)*/
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#define ACTIVE_ACTIVATE_CODEC 0x001 /* Activate Codec Digital Audio Interface */
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/*********************************************************************/
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#define SSM2602_CACHEREGNUM 10
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enum ssm2602_clk {
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SSM2602_SYSCLK,
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SSM2602_CLK_CLKOUT,
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SSM2602_CLK_XTO
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};
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#endif
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