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/*
* Copyright (c) 2012-2014, NVIDIA CORPORATION. All rights reserved.
*
* Description:
* High-speed USB device controller driver.
* USB device/endpoint management registers.
* The driver is previously named as fsl_udc_core. Based on Freescale driver
* code from Li Yang and Jiang Bo.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*/
#ifndef __TEGRA_UDC_H
#define __TEGRA_UDC_H
#ifdef VERBOSE
#define VDBG(fmt, args...) printk(KERN_DEBUG "[%s] " fmt "\n", \
__func__, ## args)
#else
#define VDBG(fmt, args...) do {} while (0)
#endif
#ifdef DEBUG
#define DBG(stuff...) pr_info("tegra_udc: " stuff)
#else
#define DBG(stuff...) do {} while (0)
#endif
#define ERR(stuff...) pr_err("tegra_udc: " stuff)
#define WARNING(stuff...) pr_warning("tegra_udc: " stuff)
#define DMA_ADDR_INVALID (~(dma_addr_t)0)
#define STATUS_BUFFER_SIZE 8
#define USB_MAX_CTRL_PAYLOAD 64
/* Charger current limit=1500mA, as per BC1.2 spec */
#define USB_CHARGING_DCP_CURRENT_LIMIT_UA 1500000u
#define USB_CHARGING_CDP_CURRENT_LIMIT_UA 1500000u
#define USB_CHARGING_SDP_CURRENT_LIMIT_UA 500000u
#define USB_CHARGING_NV_CHARGER_CURRENT_LIMIT_UA 2000000u
#define USB_CHARGING_NON_STANDARD_CHARGER_CURRENT_LIMIT_UA 500000u
#define USB_CHARGING_APPLE_CHARGER_500mA_CURRENT_LIMIT_UA 500000u
#define USB_CHARGING_APPLE_CHARGER_1000mA_CURRENT_LIMIT_UA 1000000u
#define USB_CHARGING_APPLE_CHARGER_2000mA_CURRENT_LIMIT_UA 2000000u
#define USB_CHARGING_TEST_MODE_CURRENT_LIMIT_MA 100u
/* 1 sec wait time for non-std charger detection after vbus is detected */
#define NON_STD_CHARGER_DET_TIME_MS 1000
#define BOOST_TRIGGER_SIZE 4096
#define UDC_RESET_TIMEOUT_MS 1000
#define UDC_RUN_TIMEOUT_MS 1000
#define UDC_FLUSH_TIMEOUT_MS 1000
/* ep0 transfer state */
#define WAIT_FOR_SETUP 0
#define DATA_STATE_XMIT 1
#define DATA_STATE_NEED_ZLP 2
#define WAIT_FOR_OUT_STATUS 3
#define DATA_STATE_RECV 4
/*
* ### pipe direction macro from device view
*/
#define USB_RECV 0 /* OUT EP */
#define USB_SEND 1 /* IN EP */
/* Device Controller Capability Parameter register */
#define DCCPARAMS_REG_OFFSET 0x124
#define DCCPARAMS_DC 0x00000080
#define DCCPARAMS_DEN_MASK 0x0000001f
/* USB CMD Register Bit Masks */
#define USB_CMD_REG_OFFSET ((udc->has_hostpc) ? 0x130 : 0x140)
#define USB_CMD_RUN_STOP 0x00000001
#define USB_CMD_CTRL_RESET 0x00000002
#define USB_CMD_PERIODIC_SCHEDULE_EN 0x00000010
#define USB_CMD_ASYNC_SCHEDULE_EN 0x00000020
#define USB_CMD_INT_AA_DOORBELL 0x00000040
#define USB_CMD_ASP 0x00000300
#define USB_CMD_ASYNC_SCH_PARK_EN 0x00000800
#define USB_CMD_SUTW 0x00002000
#define USB_CMD_ATDTW 0x00004000
#define USB_CMD_ITC 0x00FF0000
/* bit 15,3,2 are frame list size */
#define USB_CMD_FRAME_SIZE_1024 0x00000000
#define USB_CMD_FRAME_SIZE_512 0x00000004
#define USB_CMD_FRAME_SIZE_256 0x00000008
#define USB_CMD_FRAME_SIZE_128 0x0000000C
#define USB_CMD_FRAME_SIZE_64 0x00008000
#define USB_CMD_FRAME_SIZE_32 0x00008004
#define USB_CMD_FRAME_SIZE_16 0x00008008
#define USB_CMD_FRAME_SIZE_8 0x0000800C
/* bit 9-8 are async schedule park mode count */
#define USB_CMD_ASP_00 0x00000000
#define USB_CMD_ASP_01 0x00000100
#define USB_CMD_ASP_10 0x00000200
#define USB_CMD_ASP_11 0x00000300
#define USB_CMD_ASP_BIT_POS 8
/* bit 23-16 are interrupt threshold control */
#define USB_CMD_ITC_NO_THRESHOLD 0x00000000
#define USB_CMD_ITC_1_MICRO_FRM 0x00010000
#define USB_CMD_ITC_2_MICRO_FRM 0x00020000
#define USB_CMD_ITC_4_MICRO_FRM 0x00040000
#define USB_CMD_ITC_8_MICRO_FRM 0x00080000
#define USB_CMD_ITC_16_MICRO_FRM 0x00100000
#define USB_CMD_ITC_32_MICRO_FRM 0x00200000
#define USB_CMD_ITC_64_MICRO_FRM 0x00400000
#define USB_CMD_ITC_BIT_POS 16
/* USB STS Register Bit Masks */
#define USB_STS_REG_OFFSET ((udc->has_hostpc) ? 0x134 : 0x144)
#define USB_STS_INT 0x00000001
#define USB_STS_ERR 0x00000002
#define USB_STS_PORT_CHANGE 0x00000004
#define USB_STS_FRM_LST_ROLL 0x00000008
#define USB_STS_SYS_ERR 0x00000010
#define USB_STS_IAA 0x00000020
#define USB_STS_RESET 0x00000040
#define USB_STS_SOF 0x00000080
#define USB_STS_SUSPEND 0x00000100
#define USB_STS_HC_HALTED 0x00001000
#define USB_STS_RCL 0x00002000
#define USB_STS_PERIODIC_SCHEDULE 0x00004000
#define USB_STS_ASYNC_SCHEDULE 0x00008000
/* USB INTR Register Bit Masks */
#define USB_INTR_REG_OFFSET ((udc->has_hostpc) ? 0x138 : 0x148)
#define USB_INTR_INT_EN 0x00000001
#define USB_INTR_ERR_INT_EN 0x00000002
#define USB_INTR_PTC_DETECT_EN 0x00000004
#define USB_INTR_FRM_LST_ROLL_EN 0x00000008
#define USB_INTR_SYS_ERR_EN 0x00000010
#define USB_INTR_ASYN_ADV_EN 0x00000020
#define USB_INTR_RESET_EN 0x00000040
#define USB_INTR_SOF_EN 0x00000080
#define USB_INTR_DEVICE_SUSPEND 0x00000100
/* Frame Index Register Bit Masks */
#define USB_FRINDEX_REG_OFFSET ((udc->has_hostpc) ? 0x13c : 0x14c)
#define USB_FRINDEX_MASKS 0x3fff
/* Device Address bit masks */
#define USB_DEVICE_ADDR_REG_OFFSET ((udc->has_hostpc) ? 0x144 : 0x154)
#define USB_DEVICE_ADDRESS_MASK 0xFE000000
#define USB_DEVICE_ADDRESS_BIT_POS 25
/* endpoint list address bit masks */
#define USB_EP_LIST_ADDRESS_REG_OFFSET ((udc->has_hostpc) ? 0x148 : 0x158)
#define USB_EP_LIST_ADDRESS_MASK 0xfffff800
/* PORTSCX Register Bit Masks */
#define PORTSCX_REG_OFFSET ((udc->has_hostpc) ? 0x174 : 0x184)
#define PORTSCX_CURRENT_CONNECT_STATUS 0x00000001
#define PORTSCX_CONNECT_STATUS_CHANGE 0x00000002
#define PORTSCX_PORT_ENABLE 0x00000004
#define PORTSCX_PORT_EN_DIS_CHANGE 0x00000008
#define PORTSCX_OVER_CURRENT_ACT 0x00000010
#define PORTSCX_OVER_CURRENT_CHG 0x00000020
#define PORTSCX_PORT_FORCE_RESUME 0x00000040
#define PORTSCX_PORT_SUSPEND 0x00000080
#define PORTSCX_PORT_RESET 0x00000100
#define PORTSCX_LINE_STATUS_BITS 0x00000C00
#define PORTSCX_LINE_STATUS_DP_BIT 0x00000800
#define PORTSCX_LINE_STATUS_DM_BIT 0x00000400
#define PORTSCX_PORT_POWER 0x00001000
#define PORTSCX_PORT_INDICTOR_CTRL 0x0000C000
#define PORTSCX_PORT_TEST_CTRL 0x000F0000
#define PORTSCX_WAKE_ON_CONNECT_EN 0x00100000
#define PORTSCX_WAKE_ON_CONNECT_DIS 0x00200000
#define PORTSCX_WAKE_ON_OVER_CURRENT 0x00400000
#define PORTSCX_PHY_LOW_POWER_SPD 0x00800000
/* In tegra3 the following fields have moved to new HOSTPC1_DEVLC reg and
* their offsets have changed.
* Keeping the name of bit masks same as before (PORTSCX_*) to have
* minimum changes to code */
#define USB_HOSTPCX_DEVLC_REG_OFFSET 0x1b4
#define HOSTPC1_DEVLC_ASUS 0x00020000
#define PORTSCX_PORT_FORCE_FULL_SPEED ((udc->has_hostpc) ? 0x00800000 \
: 0x01000000)
#define PORTSCX_PORT_SPEED_MASK ((udc->has_hostpc) ? 0x06000000 : 0x0C000000)
#define PORTSCX_PORT_WIDTH ((udc->has_hostpc) ? 0x08000000 : 0x10000000)
#define PORTSCX_PHY_TYPE_SEL ((udc->has_hostpc) ? 0xE0000000 : 0xC0000000)
/* bits for port speed */
#define PORTSCX_PORT_SPEED_FULL ((udc->has_hostpc) ? 0x00000000 : 0x00000000)
#define PORTSCX_PORT_SPEED_LOW ((udc->has_hostpc) ? 0x02000000 : 0x04000000)
#define PORTSCX_PORT_SPEED_HIGH ((udc->has_hostpc) ? 0x04000000 : 0x08000000)
#define PORTSCX_PORT_SPEED_UNDEF ((udc->has_hostpc) ? 0x06000000 : 0x0C000000)
#define PORTSCX_SPEED_BIT_POS ((udc->has_hostpc) ? 25 : 26)
/* bits for parallel transceiver width for UTMI interface */
#define PORTSCX_PTW ((udc->has_hostpc) ? 0x08000000 : 0x10000000)
#define PORTSCX_PTW_8BIT ((udc->has_hostpc) ? 0x00000000 : 0x00000000)
#define PORTSCX_PTW_16BIT ((udc->has_hostpc) ? 0x08000000 : 0x10000000)
/* bits for port transceiver select */
#define PORTSCX_PTS_UTMI ((udc->has_hostpc) ? 0x00000000 : 0x00000000)
#define PORTSCX_PTS_ULPI ((udc->has_hostpc) ? 0x40000000 : 0x80000000)
#define PORTSCX_PTS_FSLS ((udc->has_hostpc) ? 0x60000000 : 0xC0000000)
#define PORTSCX_PTS_BIT_POS ((udc->has_hostpc) ? 29 : 30)
/* bit 11-10 are line status */
#define PORTSCX_LINE_STATUS_SE0 0x00000000
#define PORTSCX_LINE_STATUS_JSTATE 0x00000400
#define PORTSCX_LINE_STATUS_KSTATE 0x00000800
#define PORTSCX_LINE_STATUS_UNDEF 0x00000C00
#define PORTSCX_LINE_STATUS_BIT_POS 10
/* bit 15-14 are port indicator control */
#define PORTSCX_PIC_OFF 0x00000000
#define PORTSCX_PIC_AMBER 0x00004000
#define PORTSCX_PIC_GREEN 0x00008000
#define PORTSCX_PIC_UNDEF 0x0000C000
#define PORTSCX_PIC_BIT_POS 14
/* bit 19-16 are port test control */
#define PORTSCX_PTC_DISABLE 0x00000000
#define PORTSCX_PTC_JSTATE 0x00010000
#define PORTSCX_PTC_KSTATE 0x00020000
#define PORTSCX_PTC_SEQNAK 0x00030000
#define PORTSCX_PTC_PACKET 0x00040000
#define PORTSCX_PTC_FORCE_EN 0x00050000
#define PORTSCX_PTC_BIT_POS 16
/* USB MODE Register Bit Masks */
#define USB_MODE_REG_OFFSET ((udc->has_hostpc) ? 0x1f8 : 0x1a8)
#define USB_MODE_CTRL_MODE_IDLE 0x00000000
#define USB_MODE_CTRL_MODE_DEVICE 0x00000002
#define USB_MODE_CTRL_MODE_HOST 0x00000003
#define USB_MODE_CTRL_MODE_RSV 0x00000001
#define USB_MODE_SETUP_LOCK_OFF 0x00000008
#define USB_MODE_STREAM_DISABLE 0x00000010
/* Endpoint Setup Status bit masks */
#define EP_SETUP_STATUS_REG_OFFSET ((udc->has_hostpc) ? 0x208 : 0x1ac)
#define EP_SETUP_STATUS_MASK 0x0000003F
#define EP_SETUP_STATUS_EP0 0x00000001
/* Endpoint Prime Register */
#define EP_PRIME_REG_OFFSET ((udc->has_hostpc) ? 0x20c : 0x1b0)
/* Endpoint Flush Register */
#define EPFLUSH_REG_OFFSET ((udc->has_hostpc) ? 0x210 : 0x1b4)
#define EPFLUSH_TX_OFFSET 0x00010000
#define EPFLUSH_RX_OFFSET 0x00000000
/* Endpoint Status Register */
#define EP_STATUS_REG_OFFSET ((udc->has_hostpc) ? 0x214 : 0x1b8)
/* Endpoint Complete Register */
#define EP_COMPLETE_REG_OFFSET ((udc->has_hostpc) ? 0x218 : 0x1bc)
/* Endpoint Control Registers */
#define EP_CONTROL_REG_OFFSET ((udc->has_hostpc) ? 0x21c : 0x1c0)
/* ENDPOINTCTRLx Register Bit Masks */
#define EPCTRL_TX_ENABLE 0x00800000
#define EPCTRL_TX_DATA_TOGGLE_RST 0x00400000 /* Not EP0 */
#define EPCTRL_TX_DATA_TOGGLE_INH 0x00200000 /* Not EP0 */
#define EPCTRL_TX_TYPE 0x000C0000
#define EPCTRL_TX_DATA_SOURCE 0x00020000 /* Not EP0 */
#define EPCTRL_TX_EP_STALL 0x00010000
#define EPCTRL_RX_ENABLE 0x00000080
#define EPCTRL_RX_DATA_TOGGLE_RST 0x00000040 /* Not EP0 */
#define EPCTRL_RX_DATA_TOGGLE_INH 0x00000020 /* Not EP0 */
#define EPCTRL_RX_TYPE 0x0000000C
#define EPCTRL_RX_DATA_SINK 0x00000002 /* Not EP0 */
#define EPCTRL_RX_EP_STALL 0x00000001
/* bit 19-18 and 3-2 are endpoint type */
#define EPCTRL_EP_TYPE_CONTROL 0
#define EPCTRL_EP_TYPE_ISO 1
#define EPCTRL_EP_TYPE_BULK 2
#define EPCTRL_EP_TYPE_INTERRUPT 3
#define EPCTRL_TX_EP_TYPE_SHIFT 18
#define EPCTRL_RX_EP_TYPE_SHIFT 2
#define VBUS_SENSOR_REG_OFFSET 0x404
#define VBUS_WAKEUP_REG_OFFSET 0x408
#define USB_SYS_VBUS_A_VLD_SW_VALUE BIT(28)
#define USB_SYS_VBUS_A_VLD_SW_EN BIT(27)
#define USB_SYS_VBUS_ASESSION_VLD_SW_VALUE BIT(20)
#define USB_SYS_VBUS_ASESSION_VLD_SW_EN BIT(19)
#define USB_SYS_VBUS_ASESSION_INT_EN 0x10000
#define USB_SYS_VBUS_ASESSION_CHANGED 0x20000
#define USB_SYS_VBUS_ASESSION 0x40000
#define USB_SYS_VBUS_WAKEUP_ENABLE 0x40000000
#define USB_SYS_VBUS_WAKEUP_INT_ENABLE 0x100
#define USB_SYS_VBUS_WAKEUP_INT_STATUS 0x200
#define USB_SYS_VBUS_STATUS 0x400
#define USB_SYS_ID_PIN_STATUS 0x4
/* Endpoint Queue Head Bit Masks */
#define EP_QUEUE_HEAD_MULT_POS 30
#define EP_QUEUE_HEAD_ZLT_SEL 0x20000000
#define EP_QUEUE_HEAD_MAX_PKT_LEN_POS 16
#define EP_QUEUE_HEAD_MAX_PKT_LEN(ep_info) (((ep_info)>>16)&0x07ff)
#define EP_QUEUE_HEAD_IOS 0x00008000
#define EP_QUEUE_HEAD_NEXT_TERMINATE 0x00000001
#define EP_QUEUE_HEAD_IOC 0x00008000
#define EP_QUEUE_HEAD_MULTO 0x00000C00
#define EP_QUEUE_HEAD_STATUS_HALT 0x00000040
#define EP_QUEUE_HEAD_STATUS_ACTIVE 0x00000080
#define EP_QUEUE_CURRENT_OFFSET_MASK 0x00000FFF
#define EP_QUEUE_HEAD_NEXT_POINTER_MASK 0xFFFFFFE0
#define EP_QUEUE_FRINDEX_MASK 0x000007FF
#define EP_MAX_LENGTH_TRANSFER 0x4000
/* Endpoint Transfer Descriptor bit Masks */
#define DTD_NEXT_TERMINATE 0x00000001
#define DTD_IOC 0x00008000
#define DTD_STATUS_ACTIVE 0x00000080
#define DTD_STATUS_HALTED 0x00000040
#define DTD_STATUS_DATA_BUFF_ERR 0x00000020
#define DTD_STATUS_TRANSACTION_ERR 0x00000008
#define DTD_RESERVED_FIELDS 0x80007300
#define DTD_ADDR_MASK 0xFFFFFFE0
#define DTD_PACKET_SIZE 0x7FFF0000
#define DTD_LENGTH_BIT_POS 16
#define DTD_ERROR_MASK (DTD_STATUS_HALTED | \
DTD_STATUS_DATA_BUFF_ERR | \
DTD_STATUS_TRANSACTION_ERR)
/* Alignment requirements; must be a power of two */
#define DTD_ALIGNMENT 0x80
#define QH_ALIGNMENT 2048
#define QH_OFFSET 0x1000
/* Controller dma boundary */
#define UDC_DMA_BOUNDARY 0x1000
#define REQ_UNCOMPLETE 1
#define EP_DIR_IN 1
#define EP_DIR_OUT 0
/*
* Endpoint Queue Head data struct
* Rem: all the variables of qh are LittleEndian Mode
* and NEXT_POINTER_MASK should operate on a LittleEndian, Phy Addr
*/
struct ep_queue_head {
u32 max_pkt_length; /* Mult(31-30), Zlt(29), Max Pkt len and IOS(15) */
u32 curr_dtd_ptr; /* Current dTD Pointer(31-5) */
u32 next_dtd_ptr; /* Next dTD Pointer(31-5), T(0) */
u32 size_ioc_int_sts; /* Total bytes (30-16), IOC (15),
MultO(11-10), STS (7-0) */
u32 buff_ptr0; /* Buffer pointer Page 0 (31-12) */
u32 buff_ptr1; /* Buffer pointer Page 1 (31-12) */
u32 buff_ptr2; /* Buffer pointer Page 2 (31-12) */
u32 buff_ptr3; /* Buffer pointer Page 3 (31-12) */
u32 buff_ptr4; /* Buffer pointer Page 4 (31-12) */
u32 res1;
u8 setup_buffer[8]; /* Setup data 8 bytes */
u32 res2[4];
};
/* Endpoint Transfer Descriptor data struct */
/* Rem: all the variables of td are LittleEndian Mode */
struct ep_td_struct {
u32 next_td_ptr; /* Next TD pointer(31-5), T(0) set
indicate invalid */
u32 size_ioc_sts; /* Total bytes (30-16), IOC (15),
MultO(11-10), STS (7-0) */
u32 buff_ptr0; /* Buffer pointer Page 0 */
u32 buff_ptr1; /* Buffer pointer Page 1 */
u32 buff_ptr2; /* Buffer pointer Page 2 */
u32 buff_ptr3; /* Buffer pointer Page 3 */
u32 buff_ptr4; /* Buffer pointer Page 4 */
u32 res;
/* 32 bytes */
dma_addr_t td_dma; /* dma address for this td */
/* virtual address of next td specified in next_td_ptr */
struct ep_td_struct *next_td_virt;
};
struct tegra_req {
struct usb_request req;
struct list_head queue;
/* ep_queue() func will add
a request->queue into a udc_ep->queue 'd tail */
struct tegra_ep *ep;
unsigned mapped:1;
struct ep_td_struct *head, *tail; /* For dTD List
cpu endian Virtual addr */
unsigned int dtd_count;
};
struct tegra_ep {
struct usb_ep ep;
struct list_head queue;
struct tegra_udc *udc;
struct ep_queue_head *qh;
const struct usb_endpoint_descriptor *desc;
struct usb_gadget *gadget;
struct ep_td_struct *last_td;
int last_dtd_count;
char name[14];
unsigned stopped:1;
};
enum tegra_connect_type {
CONNECT_TYPE_NONE,
CONNECT_TYPE_SDP,
CONNECT_TYPE_DCP,
CONNECT_TYPE_DCP_MAXIM,
CONNECT_TYPE_DCP_QC2,
CONNECT_TYPE_CDP,
CONNECT_TYPE_NV_CHARGER,
CONNECT_TYPE_NON_STANDARD_CHARGER,
CONNECT_TYPE_APPLE_500MA,
CONNECT_TYPE_APPLE_1000MA,
CONNECT_TYPE_APPLE_2000MA
};
struct tegra_udc {
struct usb_gadget gadget;
struct usb_gadget_driver *driver;
struct completion *done; /* to make sure release() is done */
struct tegra_ep *eps;
struct platform_device *pdev;
struct tegra_usb_phy *phy;
struct usb_ctrlrequest local_setup_buff;
struct usb_phy *transceiver;
struct ep_queue_head *ep_qh; /* Endpoints Queue-Head */
struct tegra_req *status_req; /* ep0 status request */
struct dma_pool *td_pool; /* dma pool for DTD */
struct regulator *vbus_reg; /* regulator for drawing VBUS */
/* delayed work for non standard charger detection */
struct delayed_work non_std_charger_work;
/* work for setting regulator current limit */
struct work_struct current_work;
/* work for boosting cpu frequency */
struct work_struct boost_cpufreq_work;
/* irq work for controlling the usb power */
struct work_struct irq_work;
enum tegra_connect_type connect_type;
enum tegra_connect_type prev_connect_type;
enum tegra_connect_type connect_type_lp0;
enum tegra_usb_qc2_voltage qc2_voltage;
void __iomem *regs;
size_t ep_qh_size; /* size after alignment adjustment*/
dma_addr_t ep_qh_dma; /* dma address of QH */
unsigned int max_ep;
unsigned int irq;
u32 max_pipes; /* Device max pipes */
u32 resume_state; /* USB state to resume */
u32 usb_state; /* USB current state */
u32 ep0_state; /* Endpoint zero state */
u32 ep0_dir; /* Endpoint zero direction: USB_DIR_IN/USB_DIR_OUT */
u8 device_address; /* Device USB address */
u32 current_limit;
u32 dcp_current_limit;
u32 qc2_current_limit;
spinlock_t lock;
struct mutex sync_lock;
unsigned softconnect:1;
unsigned vbus_active:1;
unsigned stopped:1;
unsigned remote_wakeup:1;
unsigned selfpowered:1;
bool has_hostpc;
bool support_pmu_vbus;
bool fence_read;
bool vbus_in_lp0;
bool charging_supported;
struct extcon_dev *edev;
struct extcon_dev *vbus_extcon_dev;
};
#endif /* __TEGRA_UDC_H */
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