335 lines
12 KiB
C
335 lines
12 KiB
C
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/*
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* Copyright (C) 2014 NXP Semiconductors, All Rights Reserved.
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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 version 2 as
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* published by the Free Software Foundation.
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*
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*/
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/**\file
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*
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* The tfa_device interface controls a single I2C device instance by
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* referencing to the device specific context provided by means of the
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* tfa_device structure pointer.
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* Multiple instances of tfa_device structures will be created and maintained
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* by the caller.
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*
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* The API is functionally grouped as:
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* - tfa_dev basic codec interface to probe, start/stop and control the device
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* state
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* - access to internal MTP storage
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* - abstraction for interrupt bits and handling
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* - container reading support
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*/
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#ifndef __TFA_DEVICE_H__
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#define __TFA_DEVICE_H__
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#include "config.h"
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struct tfa_device;
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/*
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* hw/sw feature bit settings in MTP
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*/
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enum featureSupport {
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supportNotSet, /**< default means not set yet */
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supportNo, /**< no support */
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supportYes /**< supported */
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};
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/*
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* supported Digital Audio Interfaces bitmap
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*/
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enum Tfa98xx_DAI {
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Tfa98xx_DAI_I2S = 0x01, /**< I2S only */
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Tfa98xx_DAI_TDM = 0x02, /**< TDM, I2S */
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Tfa98xx_DAI_PDM = 0x04, /**< PDM */
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};
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/*
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* device ops function structure
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*/
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struct tfa_device_ops {
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enum Tfa98xx_Error (*dsp_msg)(struct tfa_device *tfa, int length,
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const char *buf);
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enum Tfa98xx_Error (*dsp_msg_read)(struct tfa_device *tfa, int length,
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unsigned char *bytes);
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enum Tfa98xx_Error (*reg_read)(struct tfa_device *tfa,
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unsigned char subaddress,
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unsigned short *value);
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enum Tfa98xx_Error (*reg_write)(struct tfa_device *tfa,
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unsigned char subaddress,
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unsigned short value);
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enum Tfa98xx_Error (*mem_read)(struct tfa_device *tfa,
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unsigned int start_offset, int num_words,
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int *pValues);
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enum Tfa98xx_Error (*mem_write)(struct tfa_device *tfa,
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unsigned short address, int value,
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int memtype);
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// init typically for loading optimal settings
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enum Tfa98xx_Error (*tfa_init)(struct tfa_device *tfa);
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// reset the coolflux dsp
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enum Tfa98xx_Error (*dsp_reset)(struct tfa_device *tfa, int state);
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// ready when clocks are stable to allow DSP subsystem access
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enum Tfa98xx_Error (*dsp_system_stable)(struct tfa_device *tfa,
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int *ready);
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// write the device/type specific delaytables
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enum Tfa98xx_Error (*dsp_write_tables)(struct tfa_device *tfa,
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int sample_rate);
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// Set auto_copy_mtp_to_iic
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enum Tfa98xx_Error (*auto_copy_mtp_to_iic)(struct tfa_device *tfa);
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// Factory trimming for the Boost converter
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enum Tfa98xx_Error (*factory_trimmer)(struct tfa_device *tfa);
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// Set the sw profile in the struct and the hw register
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int (*set_swprof)(struct tfa_device *tfa, unsigned short new_value);
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// Get the sw profile from the hw register
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int (*get_swprof)(struct tfa_device *tfa);
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// Set the sw vstep in the struct and the hw register
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int (*set_swvstep)(struct tfa_device *tfa, unsigned short new_value);
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// Get the sw vstep from the hw register
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int (*get_swvstep)(struct tfa_device *tfa);
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// get status of MTB busy bit
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int (*get_mtpb)(struct tfa_device *tfa);
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// set mute
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enum Tfa98xx_Error (*set_mute)(struct tfa_device *tfa, int mute);
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// Protect FAIM from being corrupted
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enum Tfa98xx_Error (*faim_protect)(struct tfa_device *tfa, int state);
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// Allow to change internal osc. gating settings
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enum Tfa98xx_Error (*set_osc_powerdown)(struct tfa_device *tfa,
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int state);
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};
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/**
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* Device states and modifier flags to allow a device/type independent fine
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* grained control of the internal state.\n
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* Values below 0x10 are referred to as base states which can be or-ed with
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* state modifiers, from 0x10 and higher.
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*
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*/
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enum tfa_state {
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TFA_STATE_UNKNOWN, /**< unknown or invalid */
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TFA_STATE_POWERDOWN, /**< PLL in powerdown, Algo is up/warm */
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TFA_STATE_INIT_HW, // load I2C/PLL hardware setting (~wait2srcsettings)
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TFA_STATE_INIT_CF, /**< coolflux HW access possible (~initcf) */
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TFA_STATE_INIT_FW, /**< DSP framework active (~patch loaded) */
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TFA_STATE_OPERATING, /**< Amp and Algo running */
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TFA_STATE_FAULT, /**< An alarm or error occurred */
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TFA_STATE_RESET, /**< I2C reset and ACS set */
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/* --sticky state modifiers-- */
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TFA_STATE_MUTE = 0x10, /**< Algo & Amp mute */
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TFA_STATE_UNMUTE = 0x20, /**< Algo & Amp unmute */
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TFA_STATE_CLOCK_ALWAYS = 0x40, // PLL connect to internal oscillator
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TFA_STATE_CLOCK_AUDIO = 0x80, // PLL connect to audio clock (BCK/FS)
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TFA_STATE_LOW_POWER = 0x100, /**< lowest possible power state */
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};
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/**
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* This is the main tfa device context structure, it will carry all information
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* that is needed to handle a single I2C device instance.
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* All functions dealing with the device will need access to the fields herein.
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*/
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struct tfa_device {
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int dev_idx; /**< device container index */
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int in_use;
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int buffer_size; /**< lowest level max buffer size */
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int has_msg; /**< support direct dsp messaging */
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unsigned char slave_address; /**< I2C slave address (not shifted) */
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unsigned short rev; /**< full revid of this device */
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unsigned char tfa_family; /**< tfa1/tfa2 */
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enum featureSupport supportDrc;
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enum featureSupport supportFramework;
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enum featureSupport support_saam;
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int sw_feature_bits[2]; /**< cached copy of sw feature bits */
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int hw_feature_bits; /**< cached copy of hw feature bits */
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int profile; /**< active profile */
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int vstep; /**< active vstep */
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unsigned char spkr_count;
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unsigned char spkr_select;
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unsigned char support_tcoef; /**< legacy tfa9887, will be removed */
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enum Tfa98xx_DAI daimap; /**< supported audio interface types */
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int mohm[3]; // speaker calibration values in milli ohms -1 is error
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struct tfa_device_ops dev_ops;
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uint16_t interrupt_enable[3];
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uint16_t interrupt_status[3];
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int ext_dsp; // respond to external DSP: -1:none, 0:no_dsp, 1:cold,
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// 2:warm
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int bus; /* TODO fix ext_dsp and bus handling */
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int tfadsp_event; /**< enum tfadsp_event_en is for external registry */
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int verbose; /**< verbosity level for debug print output */
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enum tfa_state state; // last known state or-ed with optional
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// state_modifier
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struct nxpTfaContainer *cnt; /**< the loaded container file */
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struct nxpTfaVolumeStepRegisterInfo *p_regInfo; // remember vstep for
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// partial updates
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int partial_enable; /**< enable partial updates */
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void *data; // typically pointing to Linux driver structure owning this
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// device
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int convert_dsp32; /**< convert 24 bit DSP messages to 32 bit */
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int sync_iv_delay; /**< synchronize I/V delay at cold start */
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int is_probus_device; /**< probus device: device without internal DSP */
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int needs_reset; // add the reset trigger for SetAlgoParams and SetMBDrc
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// commands
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struct kmem_cache *cachep; /**< Memory allocator handle */
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};
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/**
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* The tfa_dev_probe is called before accessing any device accessing functions.
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* Access to the tfa device register 3 is attempted and will record the
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* returned id for further use. If no device responds the function will abort.
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* The recorded id will by used by the query functions to fill the remaining
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* relevant data fields of the device structure.
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* Data such as MTP features that requires device access will only be read when
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* explicitly called and the result will be then cached in the struct.
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*
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* A structure pointer passed to this device needs to refer to existing memory
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* space allocated by the caller.
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*
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* @param slave = I2C slave address of the target device (not shifted)
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* @param tfa struct = points to memory that holds the context for this device
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* instance
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*
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* @return
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* - 0 if the I2C device responded to a read of register address 3\n
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* when the device responds but with an unknown id a warning will be
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* printed
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* - -1 if no response from the I2C device
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*
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*/
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int tfa_dev_probe(int slave, struct tfa_device *tfa);
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/**
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* Start this instance at the profile and vstep as provided.
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* The profile and vstep will be loaded first in case the current value differs
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* from the requested values.
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* Note that this call will not change the mute state of the tfa, which means
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* that of this instance was called in muted state the caller will have to
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* unmute in order to get audio.
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*
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* @param tfa struct = pointer to context of this device instance
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* @param profile the selected profile to run
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* @param vstep the selected vstep to use
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* @return tfa_error enum
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*/
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enum tfa_error tfa_dev_start(struct tfa_device *tfa, int profile, int vstep);
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/**
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* Stop audio for this instance as gracefully as possible.
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* Audio will be muted and the PLL will be shutdown together with any other
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* device/type specific settings needed to prevent audio artifacts or
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* workarounds.
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*
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* Note that this call will change state of the tfa to mute and powered down.
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*
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* @param tfa struct = pointer to context of this device instance
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* @return tfa_error enum
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*/
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enum tfa_error tfa_dev_stop(struct tfa_device *tfa);
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/**
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* This interface allows a device/type independent fine grained control of the
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* internal state of the instance.
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* Whenever a base state is requested an attempt is made to actively bring the
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* device into this state. However this may depend on external conditions beyond
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* control of this software layer. Therefore in case the state cannot be set an
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* erro will be returned and the current state remains unchanged. The base
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* states, lower values below 0x10, are all mutually exclusive, they higher ones
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* can also function as a sticky modifier which means for example that operating
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* state could be in either muted or unmuted state. Or in case of init_cf it can
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* be internal clock (always) or external audio clock. This function is intended
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* to be used for device mute/unmute synchronization when called from higher
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* layers. Mostly internal calls will use this to control the startup and
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* profile transitions in a device/type independent way.
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*
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* @param tfa struct = pointer to context of this device instance
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* @param state struct = desired device state after function return
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* @return tfa_error enum
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*/
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enum tfa_error tfa_dev_set_state(struct tfa_device *tfa, enum tfa_state state,
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int is_calibration);
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/**
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* Retrieve the current state of this instance in an active way.
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* The state field in tfa structure will reflect the result unless an error is
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* returned.
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* Note that the hardware state may change on external events an as such this
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* field should be treated as volatile.
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*
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* @param tfa struct = pointer to context of this device instance
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* @return tfa_error enum
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*
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*/
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enum tfa_state tfa_dev_get_state(struct tfa_device *tfa);
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/*****************************************************************************/
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/*****************************************************************************/
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/**
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* MTP support functions
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*/
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enum tfa_mtp {
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TFA_MTP_OTC, /**< */
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TFA_MTP_EX, /**< */
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TFA_MTP_RE25, /**< */
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TFA_MTP_RE25_PRIM, /**< */
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TFA_MTP_RE25_SEC, /**< */
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TFA_MTP_LOCK, /**< */
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};
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/**
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*
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*/
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int tfa_dev_mtp_get(struct tfa_device *tfa, enum tfa_mtp item);
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/**
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*
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*/
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enum tfa_error tfa_dev_mtp_set(struct tfa_device *tfa, enum tfa_mtp item,
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int value);
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// irq
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/* tfa2 interrupt support
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* !!! enum tfa9912_irq !!!
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*/
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/*
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* interrupt bit function to clear
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*/
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int tfa_irq_clear(struct tfa_device *tfa, int bit);
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/*
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* return state of irq or -1 if illegal bit
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*/
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int tfa_irq_get(struct tfa_device *tfa, int bit);
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/*
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* interrupt bit function that operates on the shadow regs in the handle
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*/
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int tfa_irq_ena(struct tfa_device *tfa, int bit, int state);
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/*
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* interrupt bit function that sets the polarity
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*/
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int tfa_irq_set_pol(struct tfa_device *tfa, int bit, int state);
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/*
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* mask interrupts by disabling them
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*/
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int tfa_irq_mask(struct tfa_device *tfa);
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/*
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* unmask interrupts by enabling them again
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*/
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int tfa_irq_unmask(struct tfa_device *tfa);
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// cnt read
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// debug?
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void tfanone_ops(struct tfa_device_ops *ops);
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void tfa9872_ops(struct tfa_device_ops *ops);
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void tfa9874_ops(struct tfa_device_ops *ops);
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void tfa9912_ops(struct tfa_device_ops *ops);
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void tfa9888_ops(struct tfa_device_ops *ops);
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void tfa9891_ops(struct tfa_device_ops *ops);
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void tfa9897_ops(struct tfa_device_ops *ops);
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void tfa9896_ops(struct tfa_device_ops *ops);
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void tfa9890_ops(struct tfa_device_ops *ops);
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void tfa9895_ops(struct tfa_device_ops *ops);
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void tfa9894_ops(struct tfa_device_ops *ops);
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#endif /* __TFA_DEVICE_H__ */
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