/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 * STK1135 registers
 *
 * Copyright (c) 2013 Ondrej Zary
 */

#define STK1135_REG_GCTRL       0x000   /* GPIO control */
#define STK1135_REG_ICTRL       0x004   /* Interrupt control */
#define STK1135_REG_IDATA       0x008   /* Interrupt data */
#define STK1135_REG_RMCTL       0x00c   /* Remote wakeup control */
#define STK1135_REG_POSVA       0x010   /* Power-on strapping data */

#define STK1135_REG_SENSO       0x018   /* Sensor select options */
#define STK1135_REG_PLLFD       0x01c   /* PLL frequency divider */

#define STK1135_REG_SCTRL       0x100   /* Sensor control register */
#define STK1135_REG_DCTRL       0x104   /* Decimation control register */
#define STK1135_REG_CISPO       0x110   /* Capture image starting position */
#define STK1135_REG_CIEPO       0x114   /* Capture image ending position */
#define STK1135_REG_TCTRL       0x120   /* Test data control */

#define STK1135_REG_SICTL       0x200   /* Serial interface control register */
#define STK1135_REG_SBUSW       0x204   /* Serial bus write */
#define STK1135_REG_SBUSR       0x208   /* Serial bus read */
#define STK1135_REG_SCSI        0x20c   /* Software control serial interface */
#define STK1135_REG_GSBWP       0x210   /* General serial bus write port */
#define STK1135_REG_GSBRP       0x214   /* General serial bus read port */
#define STK1135_REG_ASIC        0x2fc   /* Alternate serial interface control */

#define STK1135_REG_TMGEN       0x300   /* Timing generator */
#define STK1135_REG_TCP1        0x350   /* Timing control parameter 1 */

struct stk1135_pkt_header {
        u8 flags;
        u8 seq;
        __le16 gpio;
} __packed;

#define STK1135_HDR_FRAME_START (1 << 7)
#define STK1135_HDR_ODD         (1 << 6)
#define STK1135_HDR_I2C_VBLANK  (1 << 5)

#define STK1135_HDR_SEQ_MASK    0x3f