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// SPDX-License-Identifier: GPL-2.0+
/*
* Faraday FOTG210 USB OTG controller
*
* Copyright (C) 2013 Faraday Technology Corporation
* Author: Yuan-Hsin Chen <yhchen@faraday-tech.com>
*
* 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.
*/
#include <linux/kernel.h>
#define FOTG210_MAX_NUM_EP 5 /* ep0...ep4 */
#define FOTG210_MAX_FIFO_NUM 4 /* fifo0...fifo4 */
/* Global Mask of HC/OTG/DEV interrupt Register(0xC4) */
#define FOTG210_GMIR 0xC4
#define GMIR_INT_POLARITY 0x8 /*Active High*/
#define GMIR_MHC_INT 0x4
#define GMIR_MOTG_INT 0x2
#define GMIR_MDEV_INT 0x1
/* Device Main Control Register(0x100) */
#define FOTG210_DMCR 0x100
#define DMCR_HS_EN (1 << 6)
#define DMCR_CHIP_EN (1 << 5)
#define DMCR_SFRST (1 << 4)
#define DMCR_GOSUSP (1 << 3)
#define DMCR_GLINT_EN (1 << 2)
#define DMCR_HALF_SPEED (1 << 1)
#define DMCR_CAP_RMWAKUP (1 << 0)
/* Device Address Register(0x104) */
#define FOTG210_DAR 0x104
#define DAR_AFT_CONF (1 << 7)
/* Device Test Register(0x108) */
#define FOTG210_DTR 0x108
#define DTR_TST_CLRFF (1 << 0)
/* PHY Test Mode Selector register(0x114) */
#define FOTG210_PHYTMSR 0x114
#define PHYTMSR_TST_PKT (1 << 4)
#define PHYTMSR_TST_SE0NAK (1 << 3)
#define PHYTMSR_TST_KSTA (1 << 2)
#define PHYTMSR_TST_JSTA (1 << 1)
#define PHYTMSR_UNPLUG (1 << 0)
/* Cx configuration and FIFO Empty Status register(0x120) */
#define FOTG210_DCFESR 0x120
#define DCFESR_FIFO_EMPTY(fifo) (1 << 8 << (fifo))
#define DCFESR_CX_EMP (1 << 5)
#define DCFESR_CX_CLR (1 << 3)
#define DCFESR_CX_STL (1 << 2)
#define DCFESR_TST_PKDONE (1 << 1)
#define DCFESR_CX_DONE (1 << 0)
/* Device IDLE Counter Register(0x124) */
#define FOTG210_DICR 0x124
/* Device Mask of Interrupt Group Register (0x130) */
#define FOTG210_DMIGR 0x130
#define DMIGR_MINT_G0 (1 << 0)
/* Device Mask of Interrupt Source Group 0(0x134) */
#define FOTG210_DMISGR0 0x134
#define DMISGR0_MCX_COMEND (1 << 3)
#define DMISGR0_MCX_OUT_INT (1 << 2)
#define DMISGR0_MCX_IN_INT (1 << 1)
#define DMISGR0_MCX_SETUP_INT (1 << 0)
/* Device Mask of Interrupt Source Group 1 Register(0x138)*/
#define FOTG210_DMISGR1 0x138
#define DMISGR1_MF3_IN_INT (1 << 19)
#define DMISGR1_MF2_IN_INT (1 << 18)
#define DMISGR1_MF1_IN_INT (1 << 17)
#define DMISGR1_MF0_IN_INT (1 << 16)
#define DMISGR1_MF_IN_INT(fifo) (1 << (16 + (fifo)))
#define DMISGR1_MF3_SPK_INT (1 << 7)
#define DMISGR1_MF3_OUT_INT (1 << 6)
#define DMISGR1_MF2_SPK_INT (1 << 5)
#define DMISGR1_MF2_OUT_INT (1 << 4)
#define DMISGR1_MF1_SPK_INT (1 << 3)
#define DMISGR1_MF1_OUT_INT (1 << 2)
#define DMISGR1_MF0_SPK_INT (1 << 1)
#define DMISGR1_MF0_OUT_INT (1 << 0)
#define DMISGR1_MF_OUTSPK_INT(fifo) (0x3 << (fifo) * 2)
/* Device Mask of Interrupt Source Group 2 Register (0x13C) */
#define FOTG210_DMISGR2 0x13C
#define DMISGR2_MDMA_ERROR (1 << 8)
#define DMISGR2_MDMA_CMPLT (1 << 7)
/* Device Interrupt group Register (0x140) */
#define FOTG210_DIGR 0x140
#define DIGR_INT_G2 (1 << 2)
#define DIGR_INT_G1 (1 << 1)
#define DIGR_INT_G0 (1 << 0)
/* Device Interrupt Source Group 0 Register (0x144) */
#define FOTG210_DISGR0 0x144
#define DISGR0_CX_COMABT_INT (1 << 5)
#define DISGR0_CX_COMFAIL_INT (1 << 4)
#define DISGR0_CX_COMEND_INT (1 << 3)
#define DISGR0_CX_OUT_INT (1 << 2)
#define DISGR0_CX_IN_INT (1 << 1)
#define DISGR0_CX_SETUP_INT (1 << 0)
/* Device Interrupt Source Group 1 Register (0x148) */
#define FOTG210_DISGR1 0x148
#define DISGR1_OUT_INT(fifo) (1 << ((fifo) * 2))
#define DISGR1_SPK_INT(fifo) (1 << 1 << ((fifo) * 2))
#define DISGR1_IN_INT(fifo) (1 << 16 << (fifo))
/* Device Interrupt Source Group 2 Register (0x14C) */
#define FOTG210_DISGR2 0x14C
#define DISGR2_DMA_ERROR (1 << 8)
#define DISGR2_DMA_CMPLT (1 << 7)
#define DISGR2_RX0BYTE_INT (1 << 6)
#define DISGR2_TX0BYTE_INT (1 << 5)
#define DISGR2_ISO_SEQ_ABORT_INT (1 << 4)
#define DISGR2_ISO_SEQ_ERR_INT (1 << 3)
#define DISGR2_RESM_INT (1 << 2)
#define DISGR2_SUSP_INT (1 << 1)
#define DISGR2_USBRST_INT (1 << 0)
/* Device Receive Zero-Length Data Packet Register (0x150)*/
#define FOTG210_RX0BYTE 0x150
#define RX0BYTE_EP8 (1 << 7)
#define RX0BYTE_EP7 (1 << 6)
#define RX0BYTE_EP6 (1 << 5)
#define RX0BYTE_EP5 (1 << 4)
#define RX0BYTE_EP4 (1 << 3)
#define RX0BYTE_EP3 (1 << 2)
#define RX0BYTE_EP2 (1 << 1)
#define RX0BYTE_EP1 (1 << 0)
/* Device Transfer Zero-Length Data Packet Register (0x154)*/
#define FOTG210_TX0BYTE 0x154
#define TX0BYTE_EP8 (1 << 7)
#define TX0BYTE_EP7 (1 << 6)
#define TX0BYTE_EP6 (1 << 5)
#define TX0BYTE_EP5 (1 << 4)
#define TX0BYTE_EP4 (1 << 3)
#define TX0BYTE_EP3 (1 << 2)
#define TX0BYTE_EP2 (1 << 1)
#define TX0BYTE_EP1 (1 << 0)
/* Device IN Endpoint x MaxPacketSize Register(0x160+4*(x-1)) */
#define FOTG210_INEPMPSR(ep) (0x160 + 4 * ((ep) - 1))
#define INOUTEPMPSR_MPS(mps) ((mps) & 0x2FF)
#define INOUTEPMPSR_STL_EP (1 << 11)
#define INOUTEPMPSR_RESET_TSEQ (1 << 12)
/* Device OUT Endpoint x MaxPacketSize Register(0x180+4*(x-1)) */
#define FOTG210_OUTEPMPSR(ep) (0x180 + 4 * ((ep) - 1))
/* Device Endpoint 1~4 Map Register (0x1A0) */
#define FOTG210_EPMAP 0x1A0
#define EPMAP_FIFONO(ep, dir) \
((((ep) - 1) << ((ep) - 1) * 8) << ((dir) ? 0 : 4))
#define EPMAP_FIFONOMSK(ep, dir) \
((3 << ((ep) - 1) * 8) << ((dir) ? 0 : 4))
/* Device FIFO Map Register (0x1A8) */
#define FOTG210_FIFOMAP 0x1A8
#define FIFOMAP_DIROUT(fifo) (0x0 << 4 << (fifo) * 8)
#define FIFOMAP_DIRIN(fifo) (0x1 << 4 << (fifo) * 8)
#define FIFOMAP_BIDIR(fifo) (0x2 << 4 << (fifo) * 8)
#define FIFOMAP_NA(fifo) (0x3 << 4 << (fifo) * 8)
#define FIFOMAP_EPNO(ep) ((ep) << ((ep) - 1) * 8)
#define FIFOMAP_EPNOMSK(ep) (0xF << ((ep) - 1) * 8)
/* Device FIFO Confuguration Register (0x1AC) */
#define FOTG210_FIFOCF 0x1AC
#define FIFOCF_TYPE(type, fifo) ((type) << (fifo) * 8)
#define FIFOCF_BLK_SIN(fifo) (0x0 << (fifo) * 8 << 2)
#define FIFOCF_BLK_DUB(fifo) (0x1 << (fifo) * 8 << 2)
#define FIFOCF_BLK_TRI(fifo) (0x2 << (fifo) * 8 << 2)
#define FIFOCF_BLKSZ_512(fifo) (0x0 << (fifo) * 8 << 4)
#define FIFOCF_BLKSZ_1024(fifo) (0x1 << (fifo) * 8 << 4)
#define FIFOCF_FIFO_EN(fifo) (0x1 << (fifo) * 8 << 5)
/* Device FIFO n Instruction and Byte Count Register (0x1B0+4*n) */
#define FOTG210_FIBCR(fifo) (0x1B0 + (fifo) * 4)
#define FIBCR_BCFX 0x7FF
#define FIBCR_FFRST (1 << 12)
/* Device DMA Target FIFO Number Register (0x1C0) */
#define FOTG210_DMATFNR 0x1C0
#define DMATFNR_ACC_CXF (1 << 4)
#define DMATFNR_ACC_F3 (1 << 3)
#define DMATFNR_ACC_F2 (1 << 2)
#define DMATFNR_ACC_F1 (1 << 1)
#define DMATFNR_ACC_F0 (1 << 0)
#define DMATFNR_ACC_FN(fifo) (1 << (fifo))
#define DMATFNR_DISDMA 0
/* Device DMA Controller Parameter setting 1 Register (0x1C8) */
#define FOTG210_DMACPSR1 0x1C8
#define DMACPSR1_DMA_LEN(len) (((len) & 0xFFFF) << 8)
#define DMACPSR1_DMA_ABORT (1 << 3)
#define DMACPSR1_DMA_TYPE(dir_in) (((dir_in) ? 1 : 0) << 1)
#define DMACPSR1_DMA_START (1 << 0)
/* Device DMA Controller Parameter setting 2 Register (0x1CC) */
#define FOTG210_DMACPSR2 0x1CC
/* Device DMA Controller Parameter setting 3 Register (0x1CC) */
#define FOTG210_CXPORT 0x1D0
struct fotg210_request {
struct usb_request req;
struct list_head queue;
};
struct fotg210_ep {
struct usb_ep ep;
struct fotg210_udc *fotg210;
struct list_head queue;
unsigned stall:1;
unsigned wedged:1;
unsigned use_dma:1;
unsigned char epnum;
unsigned char type;
unsigned char dir_in;
unsigned int maxp;
const struct usb_endpoint_descriptor *desc;
};
struct fotg210_udc {
spinlock_t lock; /* protect the struct */
void __iomem *reg;
unsigned long irq_trigger;
struct usb_gadget gadget;
struct usb_gadget_driver *driver;
struct fotg210_ep *ep[FOTG210_MAX_NUM_EP];
struct usb_request *ep0_req; /* for internal request */
__le16 ep0_data;
u8 ep0_dir; /* 0/0x80 out/in */
u8 reenum; /* if re-enumeration */
};
#define gadget_to_fotg210(g) container_of((g), struct fotg210_udc, gadget)
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