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/*
* Copyright (c) 2012, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#ifndef __ARCH_ARM_MACH_MSM_CPR_H
#define __ARCH_ARM_MACH_MSM_CPR_H
/* Register Offsets for RBCPR */
/* RBCPR Gate Count and Target Registers */
#define RBCPR_GCNT_TARGET(n) (0x60 + 4 * n)
/* RBCPR Timer Control */
#define RBCPR_TIMER_INTERVAL 0x44
#define RBIF_TIMER_ADJUST 0x4C
/* RBCPR Config Register */
#define RBIF_LIMIT 0x48
#define RBCPR_STEP_QUOT 0X80
#define RBCPR_CTL 0x90
#define RBIF_SW_VLEVEL 0x94
#define RBIF_CONT_ACK_CMD 0x98
#define RBIF_CONT_NACK_CMD 0x9C
/* RBCPR Result status Register */
#define RBCPR_RESULT_0 0xA0
#define RBCPR_RESULT_1 0xA4
#define RBCPR_QUOT_AVG 0x118
/* RBCPR DEBUG Register */
#define RBCPR_DEBUG1 0x120
/* RBCPR Interrupt Control Register */
#define RBIF_IRQ_EN(n) (0x100 + 4 * n)
#define RBIF_IRQ_CLEAR 0x110
#define RBIF_IRQ_STATUS 0x114
/* Bit Mask Values */
#define GCNT_M 0x003FF000
#define TARGET_M 0x00000FFF
#define SW_VLEVEL_M 0x0000003F
#define UP_FLAG_M 0x00000010
#define DOWN_FLAG_M 0x00000004
#define CEILING_M 0x00000FC0
#define FLOOR_M 0x0000003F
#define LOOP_EN_M 0x00000001
#define TIMER_M 0x00000008
#define SW_AUTO_CONT_ACK_EN_M 0x00000020
#define SW_AUTO_CONT_NACK_DN_EN_M 0x00000040
#define HW_TO_PMIC_EN_M BIT(4)
#define BUSY_M BIT(19)
#define QUOT_SLOW_M 0x00FFF000
#define UP_THRESHOLD_M 0x0F000000
#define DN_THRESHOLD_M 0xF0000000
/* Bit Values */
#define ENABLE_CPR BIT(0)
#define DISABLE_CPR 0x0
#define ENABLE_TIMER BIT(3)
#define DISABLE_TIMER 0x0
#define SW_MODE 0x0
#define SW_AUTO_CONT_ACK_EN BIT(5)
#define SW_AUTO_CONT_NACK_DN_EN BIT(6)
/* Shift Values */
#define RBIF_CONS_DN_SHIFT (0x4)
/* Test values for RBCPR RUMI Testing */
#define GNT_CNT 0xC0
#define TARGET 0xEFF
#define CEILING_V 0x30
#define FLOOR_V 0x15
#define SW_LEVEL 0x20
/* Interrupt Mask for All interrupt flags */
#define INT_MASK (MIN_INT | DOWN_INT | MID_INT | UP_INT | MAX_INT)
/* Number of oscilator in each sensor */
#define NUM_OSC 8
#define CPR_MODE 2
/**
* enum cpr_mode - Modes in which cpr is used
*/
enum cpr_mode {
NORMAL_MODE = 0,
TURBO_MODE,
SVS_MODE,
};
/**
* enum cpr_action - Cpr actions to be taken
*/
enum cpr_action {
DOWN = 0,
UP,
};
/**
* enum cpr_interrupt
*/
enum cpr_interrupt {
DONE_INT = BIT(0),
MIN_INT = BIT(1),
DOWN_INT = BIT(2),
MID_INT = BIT(3),
UP_INT = BIT(4),
MAX_INT = BIT(5),
};
/**
* struct msm_cpr_osc - Data for CPR ring oscillator
* @gcnt: gate count value for the oscillator
* @quot: target value for ring oscillator
*/
struct msm_cpr_osc {
int gcnt;
uint32_t quot;
};
/**
* struct msm_cpr_mode - Data for CPR modes of operation
* @msm_cpr_osc: structure for oscillator data
* @ring_osc: ring oscillator of the sensor
* @tgt_volt_offset: inital voltage offset from default value
* @step_quot: step Quot for CPR calcuation
*/
struct msm_cpr_mode {
struct msm_cpr_osc ring_osc_data[NUM_OSC];
int ring_osc;
int32_t tgt_volt_offset;
uint32_t step_quot;
uint32_t turbo_Vmax;
uint32_t turbo_Vmin;
uint32_t nom_Vmax;
uint32_t nom_Vmin;
uint32_t calibrated_uV;
};
/**
* struct msm_cpr_config - Platform data for CPR configuration
* @ref_clk_khz: clock value of CPR in KHz
* @delay_us: timer delay in micro second
* @irq_line: irq line to be use (0 or 1 or 2)
* @msm_cpr_mode: structure for CPR mode data
*/
struct msm_cpr_config {
unsigned long ref_clk_khz;
unsigned long delay_us;
int irq_line;
struct msm_cpr_mode *cpr_mode_data;
int min_down_step;
uint32_t tgt_count_div_N; /* Target Cnt(Nom) = Target Cnt(Turbo) / N */
uint32_t floor;
uint32_t ceiling;
uint32_t sw_vlevel;
uint32_t up_threshold;
uint32_t dn_threshold;
uint32_t up_margin;
uint32_t dn_margin;
uint32_t max_nom_freq;
uint32_t max_freq;
uint32_t max_quot;
bool disable_cpr;
uint32_t step_size;
uint32_t (*get_quot)(uint32_t max_quot, uint32_t max_freq,
uint32_t new_freq);
void (*clk_enable)(void);
};
/**
* struct msm_cpr_config - CPR Registers
*/
struct msm_cpr_reg {
uint32_t rbif_timer_interval;
uint32_t rbif_int_en;
uint32_t rbif_limit;
uint32_t rbif_timer_adjust;
uint32_t rbcpr_gcnt_target;
uint32_t rbcpr_step_quot;
uint32_t rbif_sw_level;
uint32_t rbcpr_ctl;
};
#if defined(CONFIG_MSM_CPR) || defined(CONFIG_MSM_CPR_MODULE)
/* msm_cpr_pm_resume: Used by Power Manager for Idle Power Collapse */
void msm_cpr_pm_resume(void);
/* msm_cpr_pm_suspend: Used by Power Manager for Idle Power Collapse */
void msm_cpr_pm_suspend(void);
/* msm_cpr_enable: Used by Power Manager for GDFS */
void msm_cpr_enable(void);
/* msm_cpr_disable: Used by Power Manager for GDFS */
void msm_cpr_disable(void);
#else
/* msm_cpr_pm_resume: Used by Power Manager for Idle Power Collapse */
void msm_cpr_pm_resume(void) { }
/* msm_cpr_pm_suspend: Used by Power Manager for Idle Power Collapse */
void msm_cpr_pm_suspend(void) { }
/* msm_cpr_enable: Used by Power Manager for GDFS */
void msm_cpr_enable(void) { }
/* msm_cpr_disable: Used by Power Manager for GDFS */
void msm_cpr_disable(void) { }
#endif
#ifdef CONFIG_DEBUG_FS
int msm_cpr_debug_init(void *);
#else
static inline int msm_cpr_debug_init(void *) { return 0; }
#endif
#endif /* __ARCH_ARM_MACH_MSM_CPR_H */