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/*
* Copyright ST-Ericsson 2011.
*
* Author: Jarmo K. Kuronen <jarmo.kuronen@symbio.com> for ST Ericsson.
* Licensed under GPLv2.
*/
#ifndef _ABx500_ACCDET_H
#define _ABx500_ACCDET_H
/*
* Debounce times for AccDet1 input
* @0x880 [2:0]
*/
#define ACCDET1_DB_0ms 0x00
#define ACCDET1_DB_10ms 0x01
#define ACCDET1_DB_20ms 0x02
#define ACCDET1_DB_30ms 0x03
#define ACCDET1_DB_40ms 0x04
#define ACCDET1_DB_50ms 0x05
#define ACCDET1_DB_60ms 0x06
#define ACCDET1_DB_70ms 0x07
/*
* Voltage threshold for AccDet1 input
* @0x880 [6:3]
*/
#define ACCDET1_TH_1100mV 0x40
#define ACCDET1_TH_1200mV 0x48
#define ACCDET1_TH_1300mV 0x50
#define ACCDET1_TH_1400mV 0x58
#define ACCDET1_TH_1500mV 0x60
#define ACCDET1_TH_1600mV 0x68
#define ACCDET1_TH_1700mV 0x70
#define ACCDET1_TH_1800mV 0x78
/*
* Voltage threshold for AccDet21 input
* @0x881 [3:0]
*/
#define ACCDET21_TH_300mV 0x00
#define ACCDET21_TH_400mV 0x01
#define ACCDET21_TH_500mV 0x02
#define ACCDET21_TH_600mV 0x03
#define ACCDET21_TH_700mV 0x04
#define ACCDET21_TH_800mV 0x05
#define ACCDET21_TH_900mV 0x06
#define ACCDET21_TH_1000mV 0x07
#define ACCDET21_TH_1100mV 0x08
#define ACCDET21_TH_1200mV 0x09
#define ACCDET21_TH_1300mV 0x0a
#define ACCDET21_TH_1400mV 0x0b
#define ACCDET21_TH_1500mV 0x0c
#define ACCDET21_TH_1600mV 0x0d
#define ACCDET21_TH_1700mV 0x0e
#define ACCDET21_TH_1800mV 0x0f
/*
* Voltage threshold for AccDet22 input
* @0x881 [7:4]
*/
#define ACCDET22_TH_300mV 0x00
#define ACCDET22_TH_400mV 0x10
#define ACCDET22_TH_500mV 0x20
#define ACCDET22_TH_600mV 0x30
#define ACCDET22_TH_700mV 0x40
#define ACCDET22_TH_800mV 0x50
#define ACCDET22_TH_900mV 0x60
#define ACCDET22_TH_1000mV 0x70
#define ACCDET22_TH_1100mV 0x80
#define ACCDET22_TH_1200mV 0x90
#define ACCDET22_TH_1300mV 0xa0
#define ACCDET22_TH_1400mV 0xb0
#define ACCDET22_TH_1500mV 0xc0
#define ACCDET22_TH_1600mV 0xd0
#define ACCDET22_TH_1700mV 0xe0
#define ACCDET22_TH_1800mV 0xf0
/*
* Voltage threshold for AccDet1 input
* @0x880 [6:3]
*/
#define ACCDET1_TH_300mV 0x00
#define ACCDET1_TH_400mV 0x01
#define ACCDET1_TH_500mV 0x02
#define ACCDET1_TH_600mV 0x03
#define ACCDET1_TH_700mV 0x04
#define ACCDET1_TH_800mV 0x05
#define ACCDET1_TH_900mV 0x06
#define ACCDET1_TH_1000mV 0x07
#define MAX_DET_COUNT 10
#define MAX_VOLT_DIFF 30
#define MIN_MIC_POWER -100
/**
* struct abx500_accdet_platform_data - AV Accessory detection specific
* platform data
* @btn_keycode Keycode to be sent when accessory button is pressed.
* @accdet1_dbth Debounce time + voltage threshold for accdet 1 input.
* @accdet2122_th Voltage thresholds for accdet21 and accdet22 inputs.
* @is_detection_inverted Whether the accessory insert/removal, button
* press/release irq's are inverted.
* @mic_ctrl Gpio to select between CVBS and MIC.
*/
struct abx500_accdet_platform_data {
int btn_keycode;
u8 accdet1_dbth;
u8 accdet2122_th;
unsigned int video_ctrl_gpio;
bool is_detection_inverted;
unsigned int mic_ctrl;
};
/* Enumerations */
/**
* @JACK_TYPE_UNSPECIFIED Not known whether any accessories are connected.
* @JACK_TYPE_DISCONNECTED No accessories connected.
* @JACK_TYPE_CONNECTED Accessory is connected but functionality was unable to
* detect the actual type. In this mode, possible button events are reported.
* @JACK_TYPE_HEADPHONE Headphone type of accessory (spkrs only) connected
* @JACK_TYPE_HEADSET Headset type of accessory (mic+spkrs) connected
* @JACK_TYPE_UNSUPPORTED_HEADSET Unsupported headset of type accessory connected
* @JACK_TYPE_CARKIT Carkit type of accessory connected
* @JACK_TYPE_OPENCABLE Open cable connected
* @JACK_TYPE_CVIDEO CVideo type of accessory connected.
*/
enum accessory_jack_type {
JACK_TYPE_UNSPECIFIED,
JACK_TYPE_DISCONNECTED,
JACK_TYPE_CONNECTED,
JACK_TYPE_HEADPHONE,
JACK_TYPE_HEADSET,
JACK_TYPE_UNSUPPORTED_HEADSET,
JACK_TYPE_CARKIT,
JACK_TYPE_OPENCABLE,
JACK_TYPE_CVIDEO
};
/**
* @BUTTON_UNK Button state not known
* @BUTTON_PRESSED Button "down"
* @BUTTON_RELEASED Button "up"
*/
enum accessory_button_state {
BUTTON_UNK,
BUTTON_PRESSED,
BUTTON_RELEASED
};
/**
* @PLUG_IRQ Interrupt gen. when accessory plugged in
* @UNPLUG_IRQ Interrupt gen. when accessory plugged out
* @BUTTON_PRESS_IRQ Interrupt gen. when accessory button pressed.
* @BUTTON_RELEASE_IRQ Interrupt gen. when accessory button released.
*/
enum accessory_irq {
PLUG_IRQ,
UNPLUG_IRQ,
BUTTON_PRESS_IRQ,
BUTTON_RELEASE_IRQ,
};
/**
* Enumerates the op. modes of the avcontrol switch
* @AUDIO_IN Audio input is selected
* @VIDEO_OUT Video output is selected
* @NOT_SET The av-switch control signal is disconnected.
*/
enum accessory_avcontrol_dir {
AUDIO_IN,
VIDEO_OUT,
NOT_SET,
};
/**
* @REGULATOR_VAUDIO v-audio regulator
* @REGULATOR_VAMIC1 v-amic1 regulator
* @REGULATOR_AVSWITCH Audio/Video select switch regulator
* @REGULATOR_ALL All regulators combined
*/
enum accessory_regulator {
REGULATOR_NONE = 0x0,
REGULATOR_VAUDIO = 0x1,
REGULATOR_VAMIC1 = 0x2,
REGULATOR_AVSWITCH = 0x4,
REGULATOR_ALL = 0xFF
};
/* Structures */
/**
* Describes an interrupt
* @irq interrupt identifier
* @name name of the irq in platform data
* @isr interrupt service routine
* @register are we currently registered to receive interrupts from this source.
*/
struct accessory_irq_descriptor {
enum accessory_irq irq;
const char *name;
irq_handler_t isr;
int registered;
};
/**
* Encapsulates info of single regulator.
* @id regulator identifier
* @name name of the regulator
* @enabled flag indicating whether regu is currently enabled.
* @handle regulator handle
*/
struct accessory_regu_descriptor {
enum accessory_regulator id;
const char *name;
int enabled;
struct regulator *handle;
};
/**
* Defines attributes for accessory detection operation.
* @typename type as string
* @type Type of accessory this task tests
* @req_det_count How many times this particular type of accessory
* needs to be detected in sequence in order to accept. Multidetection
* implemented to avoid false detections during plug-in.
* @meas_mv Should ACCDETECT2 input voltage be measured just before
* making the decision or can cached voltage be used instead.
* @minvol minimum voltage (mV) for decision
* @maxvol maximum voltage (mV) for decision
* @alt_minvol minimum alternative voltage (mV) for decision
* @alt_maxvol maximum alternative voltage (mV) for decision
*/
struct accessory_detect_task {
const char *typename;
enum accessory_jack_type type;
int req_det_count;
int meas_mv;
int minvol;
int maxvol;
int alt_minvol;
int alt_maxvol;
};
/**
* Device data, capsulates all relevant device data structures.
*
* @pdev: pointer to platform device
* @pdata: Platform data
* @gpadc: interface for ADC data
* @irq_work_queue: Work queue for deferred interrupt processing
* @detect_work: work item to perform detection work
* @unplug_irq_work: work item to process unplug event
* @init_work: work item to process initialization work.
* @btn_input_dev: button input device used to report btn presses
* @btn_state: Current state of accessory button
* @jack_type: type of currently connected accessory
* @reported_jack_type: previously reported jack type.
* @jack_type_temp: temporary storage for currently connected accessory
* @jack_det_count: counter how many times in sequence the accessory
* type detection has produced same result.
* @total_jack_det_count: after plug-in irq, how many times detection
* has totally been made in order to detect the accessory type
* @detect_jiffies: Used to save timestamp when detection was made. Timestamp
* used to filter out spurious button presses that might occur during the
* plug-in procedure.
* @accdet1_th_set: flag to indicate whether accdet1 threshold and debounce
* times are configured
* @accdet2_th_set: flag to indicate whether accdet2 thresholds are configured
* @gpio35_dir_set: flag to indicate whether GPIO35 (VIDEOCTRL) direction
* has been configured.
* @irq_desc_norm: irq's as specified in the initial versions of ab
* @irq_desc_inverted: irq's inverted as seen in the latest versions of ab
* @no_irqs: Total number of irq's
* @regu_desc: Pointer to the regulator descriptors.
* @no_of_regu_desc: Total nummber of descriptors.
* @config_accdetect2_hw: Callback for configuring accdet2 comparator.
* @config_accdetect1_hw: Callback for configuring accdet1 comparator.
* @detect_plugged_in: Callback to detect type of accessory connected.
* @meas_voltage_stable: Callback to read present accdet voltage.
* @meas_alt_voltage_stable: Callback to read present alt accdet voltage.
* @config_hw_test_basic_carkit: Callback to configure hw for carkit
* detect.
* @turn_of_accdet_comparator: Call back to turn off comparators.
* @turn_on_accdet_comparator: Call back to turn ON comparators.
* @accdet_abx500_gpadc_get Call back to get a instance of the
* GPADC convertor.
* @config_hw_test_plug_connected: Call back to configure the hw for
* accessory detection.
* @set_av_switch: Call back to configure the switch for tvout or audioout.
* @get_platform_data: call to get platform specific data.
*/
struct abx500_ad {
struct platform_device *pdev;
struct abx500_accdet_platform_data *pdata;
void *gpadc;
struct workqueue_struct *irq_work_queue;
struct delayed_work detect_work;
struct delayed_work unplug_irq_work;
struct delayed_work init_work;
struct input_dev *btn_input_dev;
enum accessory_button_state btn_state;
enum accessory_jack_type jack_type;
enum accessory_jack_type reported_jack_type;
enum accessory_jack_type jack_type_temp;
int jack_det_count;
int total_jack_det_count;
unsigned long detect_jiffies;
int accdet1_th_set;
int accdet2_th_set;
int gpio35_dir_set;
struct accessory_irq_descriptor *irq_desc_norm;
struct accessory_irq_descriptor *irq_desc_inverted;
int no_irqs;
struct accessory_regu_descriptor *regu_desc;
int no_of_regu_desc;
void (*config_accdetect2_hw)(struct abx500_ad *, int);
void (*config_accdetect1_hw)(struct abx500_ad *, int);
int (*detect_plugged_in)(struct abx500_ad *);
int (*meas_voltage_stable)(struct abx500_ad *);
int (*meas_alt_voltage_stable)(struct abx500_ad *);
void (*config_hw_test_basic_carkit)(struct abx500_ad *, int);
void (*turn_off_accdet_comparator)(struct platform_device *pdev);
void (*turn_on_accdet_comparator)(struct platform_device *pdev);
void* (*accdet_abx500_gpadc_get)(void);
void (*config_hw_test_plug_connected)(struct abx500_ad *dd, int enable);
void (*set_av_switch)(struct abx500_ad *dd,
enum accessory_avcontrol_dir dir);
struct abx500_accdet_platform_data *
(*get_platform_data)(struct platform_device *pdev);
};
/* Forward declarations */
extern irqreturn_t unplug_irq_handler(int irq, void *_userdata);
extern irqreturn_t plug_irq_handler(int irq, void *_userdata);
extern irqreturn_t button_press_irq_handler(int irq, void *_userdata);
extern irqreturn_t button_release_irq_handler(int irq, void *_userdata);
extern void accessory_regulator_enable(struct abx500_ad *dd,
enum accessory_regulator reg);
extern void accessory_regulator_disable(struct abx500_ad *dd,
enum accessory_regulator reg);
extern void report_jack_status(struct abx500_ad *dd);
#ifdef CONFIG_INPUT_AB5500_ACCDET
extern struct abx500_ad ab5500_accessory_det_callbacks;
#endif
#ifdef CONFIG_INPUT_AB8500_ACCDET
extern struct abx500_ad ab8500_accessory_det_callbacks;
#endif
#endif /* _ABx500_ACCDET_H */
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