rtsx_usb.h
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/* SPDX-License-Identifier: GPL-2.0-only */
/* Driver for Realtek RTS5139 USB card reader
*
* Copyright(c) 2009-2013 Realtek Semiconductor Corp. All rights reserved.
*
* Author:
* Roger Tseng <rogerable@realtek.com>
*/
#ifndef __RTSX_USB_H
#define __RTSX_USB_H
#include <linux/usb.h>
/* related module names */
#define RTSX_USB_SD_CARD 0
#define RTSX_USB_MS_CARD 1
/* endpoint numbers */
#define EP_BULK_OUT 1
#define EP_BULK_IN 2
#define EP_INTR_IN 3
/* USB vendor requests */
#define RTSX_USB_REQ_REG_OP 0x00
#define RTSX_USB_REQ_POLL 0x02
/* miscellaneous parameters */
#define MIN_DIV_N 60
#define MAX_DIV_N 120
#define MAX_PHASE 15
#define RX_TUNING_CNT 3
#define QFN24 0
#define LQFP48 1
#define CHECK_PKG(ucr, pkg) ((ucr)->package == (pkg))
/* data structures */
struct rtsx_ucr {
u16 vendor_id;
u16 product_id;
int package;
u8 ic_version;
bool is_rts5179;
unsigned int cur_clk;
u8 *cmd_buf;
unsigned int cmd_idx;
u8 *rsp_buf;
struct usb_device *pusb_dev;
struct usb_interface *pusb_intf;
struct usb_sg_request current_sg;
unsigned char *iobuf;
dma_addr_t iobuf_dma;
struct timer_list sg_timer;
struct mutex dev_mutex;
};
/* buffer size */
#define IOBUF_SIZE 1024
/* prototypes of exported functions */
extern int rtsx_usb_get_card_status(struct rtsx_ucr *ucr, u16 *status);
extern int rtsx_usb_read_register(struct rtsx_ucr *ucr, u16 addr, u8 *data);
extern int rtsx_usb_write_register(struct rtsx_ucr *ucr, u16 addr, u8 mask,
u8 data);
extern int rtsx_usb_ep0_write_register(struct rtsx_ucr *ucr, u16 addr, u8 mask,
u8 data);
extern int rtsx_usb_ep0_read_register(struct rtsx_ucr *ucr, u16 addr,
u8 *data);
extern void rtsx_usb_add_cmd(struct rtsx_ucr *ucr, u8 cmd_type,
u16 reg_addr, u8 mask, u8 data);
extern int rtsx_usb_send_cmd(struct rtsx_ucr *ucr, u8 flag, int timeout);
extern int rtsx_usb_get_rsp(struct rtsx_ucr *ucr, int rsp_len, int timeout);
extern int rtsx_usb_transfer_data(struct rtsx_ucr *ucr, unsigned int pipe,
void *buf, unsigned int len, int use_sg,
unsigned int *act_len, int timeout);
extern int rtsx_usb_read_ppbuf(struct rtsx_ucr *ucr, u8 *buf, int buf_len);
extern int rtsx_usb_write_ppbuf(struct rtsx_ucr *ucr, u8 *buf, int buf_len);
extern int rtsx_usb_switch_clock(struct rtsx_ucr *ucr, unsigned int card_clock,
u8 ssc_depth, bool initial_mode, bool double_clk, bool vpclk);
extern int rtsx_usb_card_exclusive_check(struct rtsx_ucr *ucr, int card);
/* card status */
#define SD_CD 0x01
#define MS_CD 0x02
#define XD_CD 0x04
#define CD_MASK (SD_CD | MS_CD | XD_CD)
#define SD_WP 0x08
/* reader command field offset & parameters */
#define READ_REG_CMD 0
#define WRITE_REG_CMD 1
#define CHECK_REG_CMD 2
#define PACKET_TYPE 4
#define CNT_H 5
#define CNT_L 6
#define STAGE_FLAG 7
#define CMD_OFFSET 8
#define SEQ_WRITE_DATA_OFFSET 12
#define BATCH_CMD 0
#define SEQ_READ 1
#define SEQ_WRITE 2
#define STAGE_R 0x01
#define STAGE_DI 0x02
#define STAGE_DO 0x04
#define STAGE_MS_STATUS 0x08
#define STAGE_XD_STATUS 0x10
#define MODE_C 0x00
#define MODE_CR (STAGE_R)
#define MODE_CDIR (STAGE_R | STAGE_DI)
#define MODE_CDOR (STAGE_R | STAGE_DO)
#define EP0_OP_SHIFT 14
#define EP0_READ_REG_CMD 2
#define EP0_WRITE_REG_CMD 3
#define rtsx_usb_cmd_hdr_tag(ucr) \
do { \
ucr->cmd_buf[0] = 'R'; \
ucr->cmd_buf[1] = 'T'; \
ucr->cmd_buf[2] = 'C'; \
ucr->cmd_buf[3] = 'R'; \
} while (0)
static inline void rtsx_usb_init_cmd(struct rtsx_ucr *ucr)
{
rtsx_usb_cmd_hdr_tag(ucr);
ucr->cmd_idx = 0;
ucr->cmd_buf[PACKET_TYPE] = BATCH_CMD;
}
/* internal register address */
#define FPDCTL 0xFC00
#define SSC_DIV_N_0 0xFC07
#define SSC_CTL1 0xFC09
#define SSC_CTL2 0xFC0A
#define CFG_MODE 0xFC0E
#define CFG_MODE_1 0xFC0F
#define RCCTL 0xFC14
#define SOF_WDOG 0xFC28
#define SYS_DUMMY0 0xFC30
#define MS_BLKEND 0xFD30
#define MS_READ_START 0xFD31
#define MS_READ_COUNT 0xFD32
#define MS_WRITE_START 0xFD33
#define MS_WRITE_COUNT 0xFD34
#define MS_COMMAND 0xFD35
#define MS_OLD_BLOCK_0 0xFD36
#define MS_OLD_BLOCK_1 0xFD37
#define MS_NEW_BLOCK_0 0xFD38
#define MS_NEW_BLOCK_1 0xFD39
#define MS_LOG_BLOCK_0 0xFD3A
#define MS_LOG_BLOCK_1 0xFD3B
#define MS_BUS_WIDTH 0xFD3C
#define MS_PAGE_START 0xFD3D
#define MS_PAGE_LENGTH 0xFD3E
#define MS_CFG 0xFD40
#define MS_TPC 0xFD41
#define MS_TRANS_CFG 0xFD42
#define MS_TRANSFER 0xFD43
#define MS_INT_REG 0xFD44
#define MS_BYTE_CNT 0xFD45
#define MS_SECTOR_CNT_L 0xFD46
#define MS_SECTOR_CNT_H 0xFD47
#define MS_DBUS_H 0xFD48
#define CARD_DMA1_CTL 0xFD5C
#define CARD_PULL_CTL1 0xFD60
#define CARD_PULL_CTL2 0xFD61
#define CARD_PULL_CTL3 0xFD62
#define CARD_PULL_CTL4 0xFD63
#define CARD_PULL_CTL5 0xFD64
#define CARD_PULL_CTL6 0xFD65
#define CARD_EXIST 0xFD6F
#define CARD_INT_PEND 0xFD71
#define LDO_POWER_CFG 0xFD7B
#define SD_CFG1 0xFDA0
#define SD_CFG2 0xFDA1
#define SD_CFG3 0xFDA2
#define SD_STAT1 0xFDA3
#define SD_STAT2 0xFDA4
#define SD_BUS_STAT 0xFDA5
#define SD_PAD_CTL 0xFDA6
#define SD_SAMPLE_POINT_CTL 0xFDA7
#define SD_PUSH_POINT_CTL 0xFDA8
#define SD_CMD0 0xFDA9
#define SD_CMD1 0xFDAA
#define SD_CMD2 0xFDAB
#define SD_CMD3 0xFDAC
#define SD_CMD4 0xFDAD
#define SD_CMD5 0xFDAE
#define SD_BYTE_CNT_L 0xFDAF
#define SD_BYTE_CNT_H 0xFDB0
#define SD_BLOCK_CNT_L 0xFDB1
#define SD_BLOCK_CNT_H 0xFDB2
#define SD_TRANSFER 0xFDB3
#define SD_CMD_STATE 0xFDB5
#define SD_DATA_STATE 0xFDB6
#define SD_VPCLK0_CTL 0xFC2A
#define SD_VPCLK1_CTL 0xFC2B
#define SD_DCMPS0_CTL 0xFC2C
#define SD_DCMPS1_CTL 0xFC2D
#define CARD_DMA1_CTL 0xFD5C
#define HW_VERSION 0xFC01
#define SSC_CLK_FPGA_SEL 0xFC02
#define CLK_DIV 0xFC03
#define SFSM_ED 0xFC04
#define CD_DEGLITCH_WIDTH 0xFC20
#define CD_DEGLITCH_EN 0xFC21
#define AUTO_DELINK_EN 0xFC23
#define FPGA_PULL_CTL 0xFC1D
#define CARD_CLK_SOURCE 0xFC2E
#define CARD_SHARE_MODE 0xFD51
#define CARD_DRIVE_SEL 0xFD52
#define CARD_STOP 0xFD53
#define CARD_OE 0xFD54
#define CARD_AUTO_BLINK 0xFD55
#define CARD_GPIO 0xFD56
#define SD30_DRIVE_SEL 0xFD57
#define CARD_DATA_SOURCE 0xFD5D
#define CARD_SELECT 0xFD5E
#define CARD_CLK_EN 0xFD79
#define CARD_PWR_CTL 0xFD7A
#define OCPCTL 0xFD80
#define OCPPARA1 0xFD81
#define OCPPARA2 0xFD82
#define OCPSTAT 0xFD83
#define HS_USB_STAT 0xFE01
#define HS_VCONTROL 0xFE26
#define HS_VSTAIN 0xFE27
#define HS_VLOADM 0xFE28
#define HS_VSTAOUT 0xFE29
#define MC_IRQ 0xFF00
#define MC_IRQEN 0xFF01
#define MC_FIFO_CTL 0xFF02
#define MC_FIFO_BC0 0xFF03
#define MC_FIFO_BC1 0xFF04
#define MC_FIFO_STAT 0xFF05
#define MC_FIFO_MODE 0xFF06
#define MC_FIFO_RD_PTR0 0xFF07
#define MC_FIFO_RD_PTR1 0xFF08
#define MC_DMA_CTL 0xFF10
#define MC_DMA_TC0 0xFF11
#define MC_DMA_TC1 0xFF12
#define MC_DMA_TC2 0xFF13
#define MC_DMA_TC3 0xFF14
#define MC_DMA_RST 0xFF15
#define RBUF_SIZE_MASK 0xFBFF
#define RBUF_BASE 0xF000
#define PPBUF_BASE1 0xF800
#define PPBUF_BASE2 0xFA00
/* internal register value macros */
#define POWER_OFF 0x03
#define PARTIAL_POWER_ON 0x02
#define POWER_ON 0x00
#define POWER_MASK 0x03
#define LDO3318_PWR_MASK 0x0C
#define LDO_ON 0x00
#define LDO_SUSPEND 0x08
#define LDO_OFF 0x0C
#define DV3318_AUTO_PWR_OFF 0x10
#define FORCE_LDO_POWERB 0x60
/* LDO_POWER_CFG */
#define TUNE_SD18_MASK 0x1C
#define TUNE_SD18_1V7 0x00
#define TUNE_SD18_1V8 (0x01 << 2)
#define TUNE_SD18_1V9 (0x02 << 2)
#define TUNE_SD18_2V0 (0x03 << 2)
#define TUNE_SD18_2V7 (0x04 << 2)
#define TUNE_SD18_2V8 (0x05 << 2)
#define TUNE_SD18_2V9 (0x06 << 2)
#define TUNE_SD18_3V3 (0x07 << 2)
/* CLK_DIV */
#define CLK_CHANGE 0x80
#define CLK_DIV_1 0x00
#define CLK_DIV_2 0x01
#define CLK_DIV_4 0x02
#define CLK_DIV_8 0x03
#define SSC_POWER_MASK 0x01
#define SSC_POWER_DOWN 0x01
#define SSC_POWER_ON 0x00
#define FPGA_VER 0x80
#define HW_VER_MASK 0x0F
#define EXTEND_DMA1_ASYNC_SIGNAL 0x02
/* CFG_MODE*/
#define XTAL_FREE 0x80
#define CLK_MODE_MASK 0x03
#define CLK_MODE_12M_XTAL 0x00
#define CLK_MODE_NON_XTAL 0x01
#define CLK_MODE_24M_OSC 0x02
#define CLK_MODE_48M_OSC 0x03
/* CFG_MODE_1*/
#define RTS5179 0x02
#define NYET_EN 0x01
#define NYET_MSAK 0x01
#define SD30_DRIVE_MASK 0x07
#define SD20_DRIVE_MASK 0x03
#define DISABLE_SD_CD 0x08
#define DISABLE_MS_CD 0x10
#define DISABLE_XD_CD 0x20
#define SD_CD_DEGLITCH_EN 0x01
#define MS_CD_DEGLITCH_EN 0x02
#define XD_CD_DEGLITCH_EN 0x04
#define CARD_SHARE_LQFP48 0x04
#define CARD_SHARE_QFN24 0x00
#define CARD_SHARE_LQFP_SEL 0x04
#define CARD_SHARE_XD 0x00
#define CARD_SHARE_SD 0x01
#define CARD_SHARE_MS 0x02
#define CARD_SHARE_MASK 0x03
/* SD30_DRIVE_SEL */
#define DRIVER_TYPE_A 0x05
#define DRIVER_TYPE_B 0x03
#define DRIVER_TYPE_C 0x02
#define DRIVER_TYPE_D 0x01
/* SD_BUS_STAT */
#define SD_CLK_TOGGLE_EN 0x80
#define SD_CLK_FORCE_STOP 0x40
#define SD_DAT3_STATUS 0x10
#define SD_DAT2_STATUS 0x08
#define SD_DAT1_STATUS 0x04
#define SD_DAT0_STATUS 0x02
#define SD_CMD_STATUS 0x01
/* SD_PAD_CTL */
#define SD_IO_USING_1V8 0x80
#define SD_IO_USING_3V3 0x7F
#define TYPE_A_DRIVING 0x00
#define TYPE_B_DRIVING 0x01
#define TYPE_C_DRIVING 0x02
#define TYPE_D_DRIVING 0x03
/* CARD_CLK_EN */
#define SD_CLK_EN 0x04
#define MS_CLK_EN 0x08
/* CARD_SELECT */
#define SD_MOD_SEL 2
#define MS_MOD_SEL 3
/* CARD_SHARE_MODE */
#define CARD_SHARE_LQFP48 0x04
#define CARD_SHARE_QFN24 0x00
#define CARD_SHARE_LQFP_SEL 0x04
#define CARD_SHARE_XD 0x00
#define CARD_SHARE_SD 0x01
#define CARD_SHARE_MS 0x02
#define CARD_SHARE_MASK 0x03
/* SSC_CTL1 */
#define SSC_RSTB 0x80
#define SSC_8X_EN 0x40
#define SSC_FIX_FRAC 0x20
#define SSC_SEL_1M 0x00
#define SSC_SEL_2M 0x08
#define SSC_SEL_4M 0x10
#define SSC_SEL_8M 0x18
/* SSC_CTL2 */
#define SSC_DEPTH_MASK 0x03
#define SSC_DEPTH_DISALBE 0x00
#define SSC_DEPTH_2M 0x01
#define SSC_DEPTH_1M 0x02
#define SSC_DEPTH_512K 0x03
/* SD_VPCLK0_CTL */
#define PHASE_CHANGE 0x80
#define PHASE_NOT_RESET 0x40
/* SD_TRANSFER */
#define SD_TRANSFER_START 0x80
#define SD_TRANSFER_END 0x40
#define SD_STAT_IDLE 0x20
#define SD_TRANSFER_ERR 0x10
#define SD_TM_NORMAL_WRITE 0x00
#define SD_TM_AUTO_WRITE_3 0x01
#define SD_TM_AUTO_WRITE_4 0x02
#define SD_TM_AUTO_READ_3 0x05
#define SD_TM_AUTO_READ_4 0x06
#define SD_TM_CMD_RSP 0x08
#define SD_TM_AUTO_WRITE_1 0x09
#define SD_TM_AUTO_WRITE_2 0x0A
#define SD_TM_NORMAL_READ 0x0C
#define SD_TM_AUTO_READ_1 0x0D
#define SD_TM_AUTO_READ_2 0x0E
#define SD_TM_AUTO_TUNING 0x0F
/* SD_CFG1 */
#define SD_CLK_DIVIDE_0 0x00
#define SD_CLK_DIVIDE_256 0xC0
#define SD_CLK_DIVIDE_128 0x80
#define SD_CLK_DIVIDE_MASK 0xC0
#define SD_BUS_WIDTH_1BIT 0x00
#define SD_BUS_WIDTH_4BIT 0x01
#define SD_BUS_WIDTH_8BIT 0x02
#define SD_ASYNC_FIFO_RST 0x10
#define SD_20_MODE 0x00
#define SD_DDR_MODE 0x04
#define SD_30_MODE 0x08
/* SD_CFG2 */
#define SD_CALCULATE_CRC7 0x00
#define SD_NO_CALCULATE_CRC7 0x80
#define SD_CHECK_CRC16 0x00
#define SD_NO_CHECK_CRC16 0x40
#define SD_WAIT_CRC_TO_EN 0x20
#define SD_WAIT_BUSY_END 0x08
#define SD_NO_WAIT_BUSY_END 0x00
#define SD_CHECK_CRC7 0x00
#define SD_NO_CHECK_CRC7 0x04
#define SD_RSP_LEN_0 0x00
#define SD_RSP_LEN_6 0x01
#define SD_RSP_LEN_17 0x02
#define SD_RSP_TYPE_R0 0x04
#define SD_RSP_TYPE_R1 0x01
#define SD_RSP_TYPE_R1b 0x09
#define SD_RSP_TYPE_R2 0x02
#define SD_RSP_TYPE_R3 0x05
#define SD_RSP_TYPE_R4 0x05
#define SD_RSP_TYPE_R5 0x01
#define SD_RSP_TYPE_R6 0x01
#define SD_RSP_TYPE_R7 0x01
/* SD_STAT1 */
#define SD_CRC7_ERR 0x80
#define SD_CRC16_ERR 0x40
#define SD_CRC_WRITE_ERR 0x20
#define SD_CRC_WRITE_ERR_MASK 0x1C
#define GET_CRC_TIME_OUT 0x02
#define SD_TUNING_COMPARE_ERR 0x01
/* SD_DATA_STATE */
#define SD_DATA_IDLE 0x80
/* CARD_DATA_SOURCE */
#define PINGPONG_BUFFER 0x01
#define RING_BUFFER 0x00
/* CARD_OE */
#define SD_OUTPUT_EN 0x04
#define MS_OUTPUT_EN 0x08
/* CARD_STOP */
#define SD_STOP 0x04
#define MS_STOP 0x08
#define SD_CLR_ERR 0x40
#define MS_CLR_ERR 0x80
/* CARD_CLK_SOURCE */
#define CRC_FIX_CLK (0x00 << 0)
#define CRC_VAR_CLK0 (0x01 << 0)
#define CRC_VAR_CLK1 (0x02 << 0)
#define SD30_FIX_CLK (0x00 << 2)
#define SD30_VAR_CLK0 (0x01 << 2)
#define SD30_VAR_CLK1 (0x02 << 2)
#define SAMPLE_FIX_CLK (0x00 << 4)
#define SAMPLE_VAR_CLK0 (0x01 << 4)
#define SAMPLE_VAR_CLK1 (0x02 << 4)
/* SD_SAMPLE_POINT_CTL */
#define DDR_FIX_RX_DAT 0x00
#define DDR_VAR_RX_DAT 0x80
#define DDR_FIX_RX_DAT_EDGE 0x00
#define DDR_FIX_RX_DAT_14_DELAY 0x40
#define DDR_FIX_RX_CMD 0x00
#define DDR_VAR_RX_CMD 0x20
#define DDR_FIX_RX_CMD_POS_EDGE 0x00
#define DDR_FIX_RX_CMD_14_DELAY 0x10
#define SD20_RX_POS_EDGE 0x00
#define SD20_RX_14_DELAY 0x08
#define SD20_RX_SEL_MASK 0x08
/* SD_PUSH_POINT_CTL */
#define DDR_FIX_TX_CMD_DAT 0x00
#define DDR_VAR_TX_CMD_DAT 0x80
#define DDR_FIX_TX_DAT_14_TSU 0x00
#define DDR_FIX_TX_DAT_12_TSU 0x40
#define DDR_FIX_TX_CMD_NEG_EDGE 0x00
#define DDR_FIX_TX_CMD_14_AHEAD 0x20
#define SD20_TX_NEG_EDGE 0x00
#define SD20_TX_14_AHEAD 0x10
#define SD20_TX_SEL_MASK 0x10
#define DDR_VAR_SDCLK_POL_SWAP 0x01
/* MS_CFG */
#define SAMPLE_TIME_RISING 0x00
#define SAMPLE_TIME_FALLING 0x80
#define PUSH_TIME_DEFAULT 0x00
#define PUSH_TIME_ODD 0x40
#define NO_EXTEND_TOGGLE 0x00
#define EXTEND_TOGGLE_CHK 0x20
#define MS_BUS_WIDTH_1 0x00
#define MS_BUS_WIDTH_4 0x10
#define MS_BUS_WIDTH_8 0x18
#define MS_2K_SECTOR_MODE 0x04
#define MS_512_SECTOR_MODE 0x00
#define MS_TOGGLE_TIMEOUT_EN 0x00
#define MS_TOGGLE_TIMEOUT_DISEN 0x01
#define MS_NO_CHECK_INT 0x02
/* MS_TRANS_CFG */
#define WAIT_INT 0x80
#define NO_WAIT_INT 0x00
#define NO_AUTO_READ_INT_REG 0x00
#define AUTO_READ_INT_REG 0x40
#define MS_CRC16_ERR 0x20
#define MS_RDY_TIMEOUT 0x10
#define MS_INT_CMDNK 0x08
#define MS_INT_BREQ 0x04
#define MS_INT_ERR 0x02
#define MS_INT_CED 0x01
/* MS_TRANSFER */
#define MS_TRANSFER_START 0x80
#define MS_TRANSFER_END 0x40
#define MS_TRANSFER_ERR 0x20
#define MS_BS_STATE 0x10
#define MS_TM_READ_BYTES 0x00
#define MS_TM_NORMAL_READ 0x01
#define MS_TM_WRITE_BYTES 0x04
#define MS_TM_NORMAL_WRITE 0x05
#define MS_TM_AUTO_READ 0x08
#define MS_TM_AUTO_WRITE 0x0C
#define MS_TM_SET_CMD 0x06
#define MS_TM_COPY_PAGE 0x07
#define MS_TM_MULTI_READ 0x02
#define MS_TM_MULTI_WRITE 0x03
/* MC_FIFO_CTL */
#define FIFO_FLUSH 0x01
/* MC_DMA_RST */
#define DMA_RESET 0x01
/* MC_DMA_CTL */
#define DMA_TC_EQ_0 0x80
#define DMA_DIR_TO_CARD 0x00
#define DMA_DIR_FROM_CARD 0x02
#define DMA_EN 0x01
#define DMA_128 (0 << 2)
#define DMA_256 (1 << 2)
#define DMA_512 (2 << 2)
#define DMA_1024 (3 << 2)
#define DMA_PACK_SIZE_MASK 0x0C
/* CARD_INT_PEND */
#define XD_INT 0x10
#define MS_INT 0x08
#define SD_INT 0x04
/* LED operations*/
static inline int rtsx_usb_turn_on_led(struct rtsx_ucr *ucr)
{
return rtsx_usb_ep0_write_register(ucr, CARD_GPIO, 0x03, 0x02);
}
static inline int rtsx_usb_turn_off_led(struct rtsx_ucr *ucr)
{
return rtsx_usb_ep0_write_register(ucr, CARD_GPIO, 0x03, 0x03);
}
/* HW error clearing */
static inline void rtsx_usb_clear_fsm_err(struct rtsx_ucr *ucr)
{
rtsx_usb_ep0_write_register(ucr, SFSM_ED, 0xf8, 0xf8);
}
static inline void rtsx_usb_clear_dma_err(struct rtsx_ucr *ucr)
{
rtsx_usb_ep0_write_register(ucr, MC_FIFO_CTL,
FIFO_FLUSH, FIFO_FLUSH);
rtsx_usb_ep0_write_register(ucr, MC_DMA_RST, DMA_RESET, DMA_RESET);
}
#endif /* __RTS51139_H */