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unplugged-kernel/drivers/misc/mediatek/usb20/musb_core.h

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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (C) 2017 MediaTek Inc.
*/
#ifndef __MUSB_CORE_H__
#define __MUSB_CORE_H__
#include <linux/slab.h>
#include <linux/list.h>
#include <linux/interrupt.h>
#include <linux/errno.h>
#include <linux/timer.h>
#include <linux/device.h>
#include <linux/usb/ch9.h>
#include <linux/usb/gadget.h>
#include <linux/usb.h>
#include <linux/usb/otg.h>
#include <linux/usb/role.h>
#include <musb.h>
#include <musb_dr.h>
#include <linux/pm_wakeup.h>
#include <linux/version.h>
#include <linux/clk.h>
#if defined(CONFIG_MTK_CHARGER)
extern enum charger_type mt_get_charger_type(void);
#endif
/* to prevent 32 bit project misuse */
#if defined(CONFIG_MTK_MUSB_DRV_36BIT) && !defined(CONFIG_64BIT)
#error
#endif
#ifdef CONFIG_MTK_MUSB_QMU_SUPPORT
#include "mtk_qmu.h"
#endif
#define SHARE_IRQ -1
struct musb;
struct musb_hw_ep;
struct musb_ep;
extern int musb_fake_CDP;
extern int musb_force_on;
extern int musb_host_dynamic_fifo;
extern int musb_host_dynamic_fifo_usage_msk;
extern unsigned int musb_uart_debug;
extern bool musb_host_db_enable;
extern bool musb_host_db_workaround1;
extern bool musb_host_db_workaround2;
extern long musb_host_db_delay_ns;
extern long musb_host_db_workaround_cnt;
extern int mtk_host_audio_free_ep_udelay;
extern bool mtk_usb_power;
extern ktime_t ktime_ready;
extern int ep_config_from_table_for_host(struct musb *musb);
extern int polling_vbus_value(void *data);
#if defined(CONFIG_USBIF_COMPLIANCE)
extern bool polling_vbus;
extern struct task_struct *vbus_polling_tsk;
extern void musb_set_host_request_flag(struct musb *musb, unsigned int value);
extern void pmic_bvalid_det_int_en(int i);
#define CONFIG_USBIF_COMPLIANCE_PMIC
#if defined(CONFIG_USBIF_COMPLIANCE_PMIC)
extern int PMIC_IMM_GetOneChannelValue(int dwChannel, int deCount, int trimd);
#define MT6328_AUX_VCDT_AP 2 /* include/mach/upmu_sw.h */
#define AUX_VCDT_AP MT6328_AUX_VCDT_AP /* include/mach/upmu_sw.h */
#define R_CHARGER_1 330
#define R_CHARGER_2 39
#else
extern signed_int battery_meter_get_charger_voltage(void);
#endif
extern void send_otg_event(enum usb_otg_event event);
#endif
extern void musb_bug(void);
/* Helper defines for struct musb->hwvers */
#define MUSB_HWVERS_MAJOR(x) ((x >> 10) & 0x1f)
#define MUSB_HWVERS_MINOR(x) (x & 0x3ff)
#define MUSB_HWVERS_RC 0x8000
#define MUSB_HWVERS_1300 0x52C
#define MUSB_HWVERS_1400 0x590
#define MUSB_HWVERS_1800 0x720
#define MUSB_HWVERS_1900 0x784
#define MUSB_HWVERS_2000 0x800
#define MUSB_HUB_SUPPORT 0x4000
#include "mtk_musb.h"
#include "musb_debug.h"
#include "musb_dma.h"
#include "musb_io.h"
#include "mtk_musb_reg.h"
#include "musb_gadget.h"
#include <linux/usb/hcd.h>
#include "musb_host.h"
/* NOTE: otg and peripheral-only state machines start at B_IDLE.
* OTG or host-only go to A_IDLE when ID is sensed.
*/
#define is_peripheral_active(m) (!(m)->is_host)
#define is_host_active(m) ((m)->is_host)
#ifdef CONFIG_PROC_FS
#include <linux/fs.h>
#define MUSB_CONFIG_PROC_FS
#endif
/****************************** PERIPHERAL ROLE *****************************/
extern irqreturn_t musb_g_ep0_irq(struct musb *musb);
extern void musb_g_tx(struct musb *musb, u8 epnum);
extern void musb_g_rx(struct musb *musb, u8 epnum);
extern void musb_g_reset(struct musb *musb);
extern void musb_g_suspend(struct musb *musb);
extern void musb_g_resume(struct musb *musb);
extern void musb_g_wakeup(struct musb *musb);
extern void musb_g_disconnect(struct musb *musb);
/****************************** HOST ROLE ***********************************/
extern irqreturn_t musb_h_ep0_irq(struct musb *musb);
extern void musb_host_tx(struct musb *musb, u8 epnum);
extern void musb_host_rx(struct musb *musb, u8 epnum);
/****************************** CONSTANTS ********************************/
#ifdef CONFIG_MTK_MUSB_CARPLAY_SUPPORT
extern bool apple;
extern void musb_id_pin_work_device(void);
extern void musb_id_pin_work_host(struct work_struct *data);
extern int send_switch_cmd(void);
#endif
#ifndef MUSB_C_NUM_EPS
#define MUSB_C_NUM_EPS ((u8)16)
#endif
#ifndef MUSB_MAX_END0_PACKET
#define MUSB_MAX_END0_PACKET ((u16)MUSB_EP0_FIFOSIZE)
#endif
/* host side ep0 states */
enum musb_h_ep0_state {
MUSB_EP0_IDLE,
MUSB_EP0_START, /* expect ack of setup */
MUSB_EP0_IN, /* expect IN DATA */
MUSB_EP0_OUT, /* expect ack of OUT DATA */
MUSB_EP0_STATUS, /* expect ack of STATUS */
} __packed;
/* peripheral side ep0 states */
enum musb_g_ep0_state {
MUSB_EP0_STAGE_IDLE, /* idle, waiting for SETUP */
MUSB_EP0_STAGE_SETUP, /* received SETUP */
MUSB_EP0_STAGE_TX, /* IN data */
MUSB_EP0_STAGE_RX, /* OUT data */
MUSB_EP0_STAGE_STATUSIN, /* (after OUT data) */
MUSB_EP0_STAGE_STATUSOUT, /* (after IN data) */
MUSB_EP0_STAGE_ACKWAIT, /* after zlp, before statusin */
} __packed;
/*
* OTG protocol constants. See USB OTG 1.3 spec,
* sections 5.5 "Device Timings" and 6.6.5 "Timers".
*/
#define OTG_TIME_A_WAIT_VRISE 100 /* msec (max) */
/* when switch host to device within min 1 second, the otg state can't*/
/* switch to b-idle successfully, then connect to host and can't run */
/* gadget rest in BUS_RESET, so need to decrease min 1 second to 600ms*/
#define OTG_TIME_A_WAIT_BCON 600 /* min 1 second */
#define OTG_TIME_A_AIDL_BDIS 200 /* min 200 msec */
#if defined(CONFIG_USBIF_COMPLIANCE)
#define OTG_TIME_B_ASE0_BRST 155 /* min 3.125 ms */
#else
#define OTG_TIME_B_ASE0_BRST 100 /* min 3.125 ms */
#endif
/*************************** REGISTER ACCESS ********************************/
#define musb_ep_select(_mbase, _epnum) \
musb_writeb((_mbase), MUSB_INDEX, (_epnum))
#define MUSB_EP_OFFSET MUSB_INDEXED_OFFSET
/****************************** FUNCTIONS ********************************/
#define MUSB_HST_MODE(_musb)\
{ (_musb)->is_host = true; }
#define MUSB_DEV_MODE(_musb) \
{ (_musb)->is_host = false; }
#define test_devctl_hst_mode(_x) \
(musb_readb((_x)->mregs, MUSB_DEVCTL)&MUSB_DEVCTL_HM)
#define MUSB_MODE(musb) ((musb)->is_host ? "Host" : "Peripheral")
enum writeFunc_enum {
funcWriteb = 0,
funcWritew,
funcWritel,
funcInterrupt
};
void dumpTime(enum writeFunc_enum func, int epnum);
/******************************** TYPES *************************************/
/**
* struct musb_platform_ops - Operations passed to musb_core by HW glue layer
* @init: turns on clocks, sets up platform-specific registers, etc
* @exit: undoes @init
* @set_mode: forcefully changes operating mode
* @try_ilde: tries to idle the IP
* @vbus_status: returns vbus status if possible
* @set_vbus: forces vbus status
* @adjust_channel_params: pre check for standard dma channel_program func
*/
struct musb_platform_ops {
int (*init)(struct musb *musb);
int (*exit)(struct musb *musb);
void (*enable)(struct musb *musb);
void (*disable)(struct musb *musb);
int (*set_mode)(struct musb *musb, u8 mode);
void (*try_idle)(struct musb *musb, unsigned long timeout);
int (*vbus_status)(struct musb *musb);
void (*set_vbus)(struct musb *musb, int on);
int (*adjust_channel_params)(struct dma_channel *channel,
u16 packet_sz, u8 *mode, dma_addr_t *dma_addr, u32 *len);
void (*enable_clk)(struct musb *musb);
void (*disable_clk)(struct musb *musb);
void (*prepare_clk)(struct musb *musb);
void (*unprepare_clk)(struct musb *musb);
void (*enable_wakeup)(struct musb *musb, bool enable);
};
/*
* struct musb_hw_ep - endpoint hardware (bidirectional)
*
* Ordered slightly for better cacheline locality.
*/
struct musb_hw_ep {
struct musb *musb;
void __iomem *fifo;
void __iomem *regs;
/* index in musb->endpoints[] */
u8 epnum;
enum musb_ep_mode ep_mode;
/* hardware configuration, possibly dynamic */
bool is_shared_fifo;
bool tx_double_buffered;
bool rx_double_buffered;
u16 max_packet_sz_tx;
u16 max_packet_sz_rx;
struct dma_channel *tx_channel;
struct dma_channel *rx_channel;
void __iomem *target_regs;
/* currently scheduled peripheral endpoint */
struct musb_qh *in_qh;
struct musb_qh *out_qh;
u8 rx_reinit;
u8 tx_reinit;
/* peripheral side */
struct musb_ep ep_in; /* TX */
struct musb_ep ep_out; /* RX */
};
static inline struct musb_request *next_in_request(struct musb_hw_ep *hw_ep)
{
return next_request(&hw_ep->ep_in);
}
static inline struct musb_request *next_out_request(struct musb_hw_ep *hw_ep)
{
return next_request(&hw_ep->ep_out);
}
struct musb_csr_regs {
/* FIFO registers */
u16 txmaxp, txcsr, rxmaxp, rxcsr;
u16 rxfifoadd, txfifoadd;
u8 txtype, txinterval, rxtype, rxinterval;
u8 rxfifosz, txfifosz;
u8 txfunaddr, txhubaddr, txhubport;
u8 rxfunaddr, rxhubaddr, rxhubport;
};
struct musb_context_registers {
u8 power;
u8 intrusbe;
u16 frame;
u8 index, testmode;
u8 devctl, busctl, misc;
u32 otg_interfsel;
u32 l1_int;
struct musb_csr_regs index_regs[MUSB_C_NUM_EPS];
};
/*
* struct musb - Driver instance data.
*/
struct musb {
struct semaphore musb_lock;
/* device lock */
spinlock_t lock;
const struct musb_platform_ops *ops;
struct musb_context_registers context;
irqreturn_t (*isr)(int irq, void *private_data);
struct work_struct irq_work;
struct work_struct otg_notifier_work;
u16 hwvers;
struct delayed_work id_pin_work;
#ifdef CONFIG_MTK_MUSB_CARPLAY_SUPPORT
struct delayed_work carplay_work;
#endif
struct musb_fifo_cfg *fifo_cfg;
unsigned int fifo_cfg_size;
struct musb_fifo_cfg *fifo_cfg_host;
unsigned int fifo_cfg_host_size;
u32 fifo_size;
u16 intrrxe;
u16 intrtxe;
/* this hub status bit is reserved by USB 2.0 and not seen by usbcore */
#define MUSB_PORT_STAT_RESUME (1 << 31)
u32 port1_status;
unsigned long rh_timer;
enum musb_h_ep0_state ep0_stage;
/* bulk traffic normally dedicates endpoint hardware, and each
* direction has its own ring of host side endpoints.
* we try to progress the transfer at the head of each endpoint's
* queue until it completes or NAKs too much; then we try the next
* endpoint.
*/
struct musb_hw_ep *bulk_ep;
struct list_head control; /* of musb_qh */
struct list_head in_bulk; /* of musb_qh */
struct list_head out_bulk; /* of musb_qh */
struct timer_list otg_timer;
struct timer_list idle_timer;
#if defined(CONFIG_USBIF_COMPLIANCE)
struct timer_list otg_vbus_polling_timer;
#endif
struct notifier_block nb;
struct dma_controller *dma_controller;
struct device *controller;
void __iomem *ctrl_base;
void __iomem *mregs;
/* passed down from chip/board specific irq handlers */
u8 int_usb;
u16 int_rx;
u16 int_tx;
#ifdef CONFIG_MTK_MUSB_QMU_SUPPORT
u32 int_queue;
#endif
struct usb_phy *xceiv;
struct phy *phy;
u8 xceiv_event;
int nIrq;
int dma_irq;
unsigned irq_wake:1;
struct musb_hw_ep endpoints[MUSB_C_NUM_EPS];
#define control_ep endpoints
#define VBUSERR_RETRY_COUNT 3
u16 vbuserr_retry;
u16 epmask;
u8 nr_endpoints;
int (*board_set_power)(int state);
u8 min_power; /* vbus for periph, in mA/2 */
bool is_host;
bool in_ipo_off;
int a_wait_bcon; /* VBUS timeout in msecs */
unsigned long idle_timeout; /* Next timeout in jiffies */
/* active means connected and not suspended */
unsigned is_active:1;
unsigned is_multipoint:1;
unsigned ignore_disconnect:1; /* during bus resets */
unsigned hb_iso_rx:1; /* high bandwidth iso rx? */
unsigned hb_iso_tx:1; /* high bandwidth iso tx? */
unsigned dyn_fifo:1; /* dynamic FIFO supported? */
unsigned bulk_split:1;
#define can_bulk_split(musb, type) \
(((type) == USB_ENDPOINT_XFER_BULK) && (musb)->bulk_split)
unsigned bulk_combine:1;
#define can_bulk_combine(musb, type) \
(((type) == USB_ENDPOINT_XFER_BULK) && (musb)->bulk_combine)
/* is_suspended means USB B_PERIPHERAL suspend */
unsigned is_suspended:1;
/* may_wakeup means remote wakeup is enabled */
unsigned may_wakeup:1;
/* is_self_powered is reported in device status and the
* config descriptor. is_bus_powered means B_PERIPHERAL
* draws some VBUS current; both can be true.
*/
unsigned is_self_powered:1;
unsigned is_bus_powered:1;
unsigned set_address:1;
unsigned test_mode:1;
unsigned softconnect:1;
u8 address;
u8 test_mode_nr;
u16 ackpend; /* ep0 */
enum musb_g_ep0_state ep0_state;
struct usb_gadget g; /* the gadget */
struct usb_gadget_driver *gadget_driver; /* its driver */
struct wakeup_source *usb_lock;
/*
* FIXME: Remove this flag.
*
* This is only added to allow Blackfin to work
* with current driver. For some unknown reason
* Blackfin doesn't work with double buffering
* and that's enabled by default.
*
* We added this flag to forcefully disable double
* buffering until we get it working.
*/
unsigned double_buffer_not_ok:1;
struct musb_hdrc_config *config;
#ifdef MUSB_CONFIG_PROC_FS
struct proc_dir_entry *proc_entry;
#endif
int xceiv_old_state;
#ifdef CONFIG_DEBUG_FS
struct dentry *debugfs_root;
#endif
bool power;
unsigned is_ready:1;
bool usb_if;
u16 fifo_addr;
#if defined(CONFIG_USBIF_COMPLIANCE)
bool srp_drvvbus;
enum usb_otg_event otg_event;
#endif
struct workqueue_struct *st_wq;
struct power_supply *usb_psy;
struct notifier_block psy_nb;
#if defined(CONFIG_USB_ROLE_SWITCH)
struct otg_switch_mtk *otg_sx;
#endif
struct mt_usb_glue *glue;
/* host suspend */
bool host_suspend;
bool usb_connected;
};
static inline struct musb *gadget_to_musb(struct usb_gadget *g)
{
return container_of(g, struct musb, g);
}
static inline int musb_read_fifosize
(struct musb *musb, struct musb_hw_ep *hw_ep, u8 epnum)
{
void __iomem *mbase = musb->mregs;
u8 reg = 0;
/* read from core using indexed model */
reg = musb_readb(mbase, MUSB_EP_OFFSET(epnum, MUSB_FIFOSIZE));
/* 0's returned when no more endpoints */
if (!reg)
return -ENODEV;
musb->nr_endpoints++;
musb->epmask |= (1 << epnum);
hw_ep->max_packet_sz_tx = 1 << (reg & 0x0f);
/* shared TX/RX FIFO? */
if ((reg & 0xf0) == 0xf0) {
hw_ep->max_packet_sz_rx = hw_ep->max_packet_sz_tx;
hw_ep->is_shared_fifo = true;
return 0;
}
hw_ep->max_packet_sz_rx = 1 << ((reg & 0xf0) >> 4);
hw_ep->is_shared_fifo = false;
return 0;
}
static inline void musb_configure_ep0(struct musb *musb)
{
musb->endpoints[0].max_packet_sz_tx = MUSB_EP0_FIFOSIZE;
musb->endpoints[0].max_packet_sz_rx = MUSB_EP0_FIFOSIZE;
musb->endpoints[0].is_shared_fifo = true;
}
/***************************** Glue it together *****************************/
extern const char musb_driver_name[];
extern void musb_start(struct musb *musb);
extern void musb_stop(struct musb *musb);
extern int musb_get_id(struct device *dev, gfp_t gfp_mask);
extern void musb_put_id(struct device *dev, int id);
extern void musb_write_fifo(struct musb_hw_ep *ep, u16 len, const u8 *src);
extern void musb_read_fifo(struct musb_hw_ep *ep, u16 len, u8 *dst);
extern void musb_load_testpacket(struct musb *musb);
extern void musb_generic_disable(struct musb *musb);
extern irqreturn_t musb_interrupt(struct musb *musb);
extern irqreturn_t dma_controller_irq(int irq, void *private_data);
extern void musb_hnp_stop(struct musb *musb);
static inline void musb_platform_set_vbus(struct musb *musb, int is_on)
{
if (musb->ops->set_vbus)
musb->ops->set_vbus(musb, is_on);
}
static inline void musb_platform_enable(struct musb *musb)
{
if (musb->ops->enable)
musb->ops->enable(musb);
}
static inline void musb_platform_disable(struct musb *musb)
{
if (musb->ops->disable)
musb->ops->disable(musb);
}
static inline int musb_platform_set_mode(struct musb *musb, u8 mode)
{
if (!musb->ops->set_mode)
return 0;
return musb->ops->set_mode(musb, mode);
}
static inline void
musb_platform_try_idle(struct musb *musb, unsigned long timeout)
{
if (musb->ops->try_idle)
musb->ops->try_idle(musb, timeout);
}
static inline int musb_platform_get_vbus_status(struct musb *musb)
{
if (!musb->ops->vbus_status)
return 0;
return musb->ops->vbus_status(musb);
}
static inline int musb_platform_init(struct musb *musb)
{
if (!musb->ops->init)
return -EINVAL;
return musb->ops->init(musb);
}
static inline int musb_platform_exit(struct musb *musb)
{
if (!musb->ops->exit)
return -EINVAL;
return musb->ops->exit(musb);
}
static inline void musb_platform_enable_clk(struct musb *musb)
{
if (musb->ops->enable_clk)
musb->ops->enable_clk(musb);
}
static inline void musb_platform_disable_clk(struct musb *musb)
{
if (musb->ops->disable_clk)
musb->ops->disable_clk(musb);
}
static inline void musb_platform_prepare_clk(struct musb *musb)
{
if (musb->ops->prepare_clk)
musb->ops->prepare_clk(musb);
}
static inline void musb_platform_unprepare_clk(struct musb *musb)
{
if (musb->ops->unprepare_clk)
musb->ops->unprepare_clk(musb);
}
static inline void musb_platform_enable_wakeup(struct musb *musb)
{
if (musb->ops->enable_wakeup)
musb->ops->enable_wakeup(musb, true);
}
static inline void musb_platform_disable_wakeup(struct musb *musb)
{
if (musb->ops->enable_wakeup)
musb->ops->enable_wakeup(musb, false);
}
/* #if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 10, 0) */
static inline const char *otg_state_string(enum usb_otg_state state)
{
return usb_otg_state_string(state);
}
enum {
USB_DPIDLE_ALLOWED = 0,
USB_DPIDLE_FORBIDDEN,
USB_DPIDLE_SRAM,
USB_DPIDLE_TIMER,
USB_DPIDLE_SUSPEND,
USB_DPIDLE_RESUME
};
extern void usb_hal_dpidle_request(int mode);
extern void register_usb_hal_dpidle_request(void (*function)(int));
extern void usb_hal_disconnect_check(void);
extern void register_usb_hal_disconnect_check(void (*function)(void));
extern void wake_up_bat(void);
extern void wait_tx_done(u8 epnum, unsigned int timeout_ns);
extern int host_tx_refcnt_inc(int epnum);
extern int host_tx_refcnt_dec(int epnum);
extern void host_tx_refcnt_reset(int epnum);
extern void dump_tx_ops(u8 ep_num);
#endif /* __MUSB_CORE_H__ */
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