#ifndef __MSM_ADC_H
#define __MSM_ADC_H

#include <uapi/linux/msm_adc.h>

#define MSM_ADC_MAX_NUM_DEVS		3

enum {
	ADC_CONFIG_TYPE1,
	ADC_CONFIG_TYPE2,
	ADC_CONFIG_NONE = 0xffffffff
};

enum {
	ADC_CALIB_CONFIG_TYPE1,
	ADC_CALIB_CONFIG_TYPE2,
	ADC_CALIB_CONFIG_TYPE3,
	ADC_CALIB_CONFIG_TYPE4,
	ADC_CALIB_CONFIG_TYPE5,
	ADC_CALIB_CONFIG_TYPE6,
	ADC_CALIB_CONFIG_TYPE7,
	ADC_CALIB_CONFIG_NONE = 0xffffffff
};

enum {
	/* CHAN_PATH_TYPEn is specific for each ADC driver
	and can be used however way it wants*/
	CHAN_PATH_TYPE1,
	CHAN_PATH_TYPE2,
	CHAN_PATH_TYPE3,
	CHAN_PATH_TYPE4,
	CHAN_PATH_TYPE5,
	CHAN_PATH_TYPE6,
	CHAN_PATH_TYPE7,
	CHAN_PATH_TYPE8,
	CHAN_PATH_TYPE9,
	CHAN_PATH_TYPE10,
	CHAN_PATH_TYPE11,
	CHAN_PATH_TYPE12,
	CHAN_PATH_TYPE13,
	CHAN_PATH_TYPE14,
	CHAN_PATH_TYPE15,
	CHAN_PATH_TYPE16,
	/* A given channel connects directly to the ADC */
	CHAN_PATH_TYPE_NONE = 0xffffffff
};

#define CHANNEL_ADC_BATT_ID     0
#define CHANNEL_ADC_BATT_THERM  1
#define CHANNEL_ADC_BATT_AMON   2
#define CHANNEL_ADC_VBATT       3
#define CHANNEL_ADC_VCOIN       4
#define CHANNEL_ADC_VCHG        5
#define CHANNEL_ADC_CHG_MONITOR 6
#define CHANNEL_ADC_VPH_PWR     7
#define CHANNEL_ADC_USB_VBUS    8
#define CHANNEL_ADC_DIE_TEMP    9
#define CHANNEL_ADC_DIE_TEMP_4K 0xa
#define CHANNEL_ADC_XOTHERM     0xb
#define CHANNEL_ADC_XOTHERM_4K  0xc
#define CHANNEL_ADC_HDSET       0xd
#define CHANNEL_ADC_MSM_THERM	0xe
#define CHANNEL_ADC_625_REF	0xf
#define CHANNEL_ADC_1250_REF	0x10
#define CHANNEL_ADC_325_REF	0x11
#define CHANNEL_ADC_FSM_THERM	0x12
#define CHANNEL_ADC_PA_THERM	0x13

enum {
	CALIB_STARTED,
	CALIB_NOT_REQUIRED = 0xffffffff,
};

struct linear_graph {
	int32_t offset;
	int32_t dy; /* Slope numerator */
	int32_t dx; /* Slope denominator */
};

struct adc_map_pt {
	int32_t x;
	int32_t y;
};

struct adc_properties {
	uint32_t adc_reference; /* milli-voltage for this adc */
	uint32_t bitresolution;
	bool bipolar;
	uint32_t conversiontime;
};

struct chan_properties {
	uint32_t gain_numerator;
	uint32_t gain_denominator;
	struct linear_graph *adc_graph;
/* this maybe the same as adc_properties.ConversionTime
   if channel does not change the adc properties */
	uint32_t chan_conv_time;
};

struct msm_adc_channels {
	char *name;
	uint32_t channel_name;
	uint32_t adc_dev_instance;
	struct adc_access_fn *adc_access_fn;
	uint32_t chan_path_type;
	uint32_t adc_config_type;
	uint32_t adc_calib_type;
	int32_t (*chan_processor)(int32_t, const struct adc_properties *,
		const struct chan_properties *, struct adc_chan_result *);

};

struct msm_adc_platform_data {
	struct msm_adc_channels *channel;
	uint32_t num_chan_supported;
	uint32_t num_adc;
	uint32_t chan_per_adc;
	char **dev_names;
	uint32_t target_hw;
	uint32_t gpio_config;
	u32 (*adc_gpio_enable) (int);
	u32 (*adc_gpio_disable) (int);
	u32 (*adc_fluid_enable) (void);
	u32 (*adc_fluid_disable) (void);
};

enum hw_type {
	MSM_7x30,
	MSM_8x60,
	FSM_9xxx,
	MSM_8x25,
};

enum epm_gpio_config {
	MPROC_CONFIG,
	APROC_CONFIG
};

enum adc_request {
	START_OF_CONV,
	END_OF_CONV,
	START_OF_CALIBRATION,
	END_OF_CALIBRATION,
};

struct adc_dev_spec {
	uint32_t			hwmon_dev_idx;
	struct dal_dev_spec {
		uint32_t		dev_idx;
		uint32_t		chan_idx;
	} dal;
};

struct dal_conv_request {
	struct dal_dev_spec		target;
	void				*cb_h;
};

struct dal_adc_result {
	uint32_t			status;
	uint32_t			token;
	uint32_t			dev_idx;
	uint32_t			chan_idx;
	int				physical;
	uint32_t			percent;
	uint32_t			microvolts;
	uint32_t			reserved;
};

struct dal_conv_slot {
	void				*cb_h;
	struct dal_adc_result		result;
	struct completion		comp;
	struct list_head		list;
	uint32_t			idx;
	uint32_t			chan_idx;
	bool				blocking;
	struct msm_client_data		*client;
};

struct dal_translation {
	uint32_t			dal_dev_idx;
	uint32_t			hwmon_dev_idx;
	uint32_t			hwmon_start;
	uint32_t			hwmon_end;
};

struct msm_client_data {
	struct list_head		complete_list;
	bool				online;
	int32_t				adc_chan;
	uint32_t			num_complete;
	uint32_t			num_outstanding;
	wait_queue_head_t		data_wait;
	wait_queue_head_t		outst_wait;
	struct mutex lock;
};

struct adc_conv_slot {
	void				*cb_h;
	union {
		struct adc_chan_result		result;
		struct dal_adc_result		dal_result;
	} conv;
	struct completion		comp;
	struct completion		*compk;
	struct list_head		list;
	uint32_t			idx;
	enum adc_request		adc_request;
	bool				blocking;
	struct msm_client_data		*client;
	struct work_struct		work;
	struct chan_properties		chan_properties;
	uint32_t			chan_path;
	uint32_t			chan_adc_config;
	uint32_t			chan_adc_calib;
};

struct adc_access_fn {
	int32_t (*adc_select_chan_and_start_conv)(uint32_t,
				struct adc_conv_slot*);
	int32_t (*adc_read_adc_code)(uint32_t dev_instance, int32_t *data);
	struct adc_properties *(*adc_get_properties)(uint32_t dev_instance);
	void (*adc_slot_request)(uint32_t dev_instance,
				struct adc_conv_slot **);
	void (*adc_restore_slot)(uint32_t dev_instance,
				struct adc_conv_slot *slot);
	int32_t (*adc_calibrate)(uint32_t dev_instance, struct adc_conv_slot*,
		int *);
};

void msm_adc_wq_work(struct work_struct *work);
void msm_adc_conv_cb(void *context, u32 param, void *evt_buf, u32 len);
#ifdef CONFIG_SENSORS_MSM_ADC
int32_t adc_channel_open(uint32_t channel, void **h);
int32_t adc_channel_close(void *h);
int32_t adc_channel_request_conv(void *h, struct completion *conv_complete_evt);
int32_t adc_channel_read_result(void *h, struct adc_chan_result *chan_result);
#else
static inline int32_t adc_channel_open(uint32_t channel, void **h)
{
	pr_err("%s.not supported.\n", __func__);
	return -ENODEV;
}
static inline int32_t adc_channel_close(void *h)
{
	pr_err("%s.not supported.\n", __func__);
	return -ENODEV;
}
static inline int32_t
adc_channel_request_conv(void *h, struct completion *conv_complete_evt)
{
	pr_err("%s.not supported.\n", __func__);
	return -ENODEV;
}
static inline int32_t
adc_channel_read_result(void *h, struct adc_chan_result *chan_result)
{
	pr_err("%s.not supported.\n", __func__);
	return -ENODEV;
}
#endif /* CONFIG_SENSORS_MSM_ADC */
#endif /* __MSM_ADC_H */