/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 *  Driver for the Conexant CX25821 PCIe bridge
 *
 *  Copyright (C) 2009 Conexant Systems Inc.
 *  Authors  <shu.lin@conexant.com>, <hiep.huynh@conexant.com>
 *  Based on Steven Toth <stoth@linuxtv.org> cx23885 driver
 */

#ifndef CX25821_H_
#define CX25821_H_

#include <linux/pci.h>
#include <linux/i2c.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
#include <linux/sched.h>
#include <linux/kdev_t.h>

#include <media/v4l2-common.h>
#include <media/v4l2-device.h>
#include <media/v4l2-ctrls.h>
#include <media/videobuf2-v4l2.h>
#include <media/videobuf2-dma-sg.h>

#include "cx25821-reg.h"
#include "cx25821-medusa-reg.h"
#include "cx25821-sram.h"
#include "cx25821-audio.h"

#include <linux/mutex.h>

#define UNSET (-1U)
#define NO_SYNC_LINE (-1U)

#define CX25821_MAXBOARDS 2

#define LINE_SIZE_D1    1440

/* Number of decoders and encoders */
#define MAX_DECODERS            8
#define MAX_ENCODERS            2
#define QUAD_DECODERS           4
#define MAX_CAMERAS             16

/* Max number of inputs by card */
#define MAX_CX25821_INPUT     8
#define RESOURCE_VIDEO0       1
#define RESOURCE_VIDEO1       2
#define RESOURCE_VIDEO2       4
#define RESOURCE_VIDEO3       8
#define RESOURCE_VIDEO4       16
#define RESOURCE_VIDEO5       32
#define RESOURCE_VIDEO6       64
#define RESOURCE_VIDEO7       128
#define RESOURCE_VIDEO8       256
#define RESOURCE_VIDEO9       512
#define RESOURCE_VIDEO10      1024
#define RESOURCE_VIDEO11      2048

#define BUFFER_TIMEOUT     (HZ) /* 0.5 seconds */

#define UNKNOWN_BOARD        0
#define CX25821_BOARD        1

/* Currently supported by the driver */
#define CX25821_NORMS (\
        V4L2_STD_NTSC_M |  V4L2_STD_NTSC_M_JP | V4L2_STD_NTSC_M_KR | \
        V4L2_STD_PAL_BG |  V4L2_STD_PAL_DK    |  V4L2_STD_PAL_I    | \
        V4L2_STD_PAL_M  |  V4L2_STD_PAL_N     |  V4L2_STD_PAL_H    | \
        V4L2_STD_PAL_Nc)

#define CX25821_BOARD_CONEXANT_ATHENA10 1
#define MAX_VID_CHANNEL_NUM     12

/*
 * Maximum capture-only channels. This can go away once video/audio output
 * is fully supported in this driver.
 */
#define MAX_VID_CAP_CHANNEL_NUM     10

#define VID_CHANNEL_NUM 8

struct cx25821_fmt {
        u32 fourcc;             /* v4l2 format id */
        int depth;
        int flags;
        u32 cxformat;
};

struct cx25821_tvnorm {
        char *name;
        v4l2_std_id id;
        u32 cxiformat;
        u32 cxoformat;
};

enum cx25821_src_sel_type {
        CX25821_SRC_SEL_EXT_656_VIDEO = 0,
        CX25821_SRC_SEL_PARALLEL_MPEG_VIDEO
};

struct cx25821_riscmem {
        unsigned int   size;
        __le32         *cpu;
        __le32         *jmp;
        dma_addr_t     dma;
};

/* buffer for one video frame */
struct cx25821_buffer {
        /* common v4l buffer stuff -- must be first */
        struct vb2_v4l2_buffer vb;
        struct list_head queue;

        /* cx25821 specific */
        unsigned int bpl;
        struct cx25821_riscmem risc;
        const struct cx25821_fmt *fmt;
};

enum port {
        CX25821_UNDEFINED = 0,
        CX25821_RAW,
        CX25821_264
};

struct cx25821_board {
        const char *name;
        enum port porta;
        enum port portb;
        enum port portc;

        u32 clk_freq;
};

struct cx25821_i2c {
        struct cx25821_dev *dev;

        int nr;

        /* i2c i/o */
        struct i2c_adapter i2c_adap;
        struct i2c_client i2c_client;
        u32 i2c_rc;

        /* cx25821 registers used for raw address */
        u32 i2c_period;
        u32 reg_ctrl;
        u32 reg_stat;
        u32 reg_addr;
        u32 reg_rdata;
        u32 reg_wdata;
};

struct cx25821_dmaqueue {
        struct list_head active;
        u32 count;
};

struct cx25821_dev;

struct cx25821_channel;

struct cx25821_video_out_data {
        struct cx25821_channel *chan;
        int _line_size;
        int _prog_cnt;
        int _pixel_format;
        int _is_first_frame;
        int _is_running;
        int _file_status;
        int _lines_count;
        int _frame_count;
        unsigned int _risc_size;

        __le32 *_dma_virt_start_addr;
        __le32 *_dma_virt_addr;
        dma_addr_t _dma_phys_addr;
        dma_addr_t _dma_phys_start_addr;

        unsigned int _data_buf_size;
        __le32 *_data_buf_virt_addr;
        dma_addr_t _data_buf_phys_addr;

        u32 upstream_riscbuf_size;
        u32 upstream_databuf_size;
        int is_60hz;
        int _frame_index;
        int cur_frame_index;
        int curpos;
        wait_queue_head_t waitq;
};

struct cx25821_channel {
        unsigned id;
        struct cx25821_dev *dev;

        struct v4l2_ctrl_handler hdl;

        struct video_device vdev;
        struct cx25821_dmaqueue dma_vidq;
        struct vb2_queue vidq;

        const struct sram_channel *sram_channels;

        const struct cx25821_fmt *fmt;
        unsigned field;
        unsigned int width, height;
        int pixel_formats;
        int use_cif_resolution;
        int cif_width;

        /* video output data for the video output channel */
        struct cx25821_video_out_data *out;
};

struct snd_card;

struct cx25821_dev {
        struct v4l2_device v4l2_dev;

        /* pci stuff */
        struct pci_dev *pci;
        unsigned char pci_rev, pci_lat;
        int pci_bus, pci_slot;
        u32 base_io_addr;
        u32 __iomem *lmmio;
        u8 __iomem *bmmio;
        int pci_irqmask;
        int hwrevision;
        /* used by cx25821-alsa */
        struct snd_card *card;

        u32 clk_freq;

        /* I2C adapters: Master 1 & 2 (External) & Master 3 (Internal only) */
        struct cx25821_i2c i2c_bus[3];

        int nr;
        struct mutex lock;

        struct cx25821_channel channels[MAX_VID_CHANNEL_NUM];

        /* board details */
        unsigned int board;
        char name[32];

        /* Analog video */
        unsigned int input;
        v4l2_std_id tvnorm;
        unsigned short _max_num_decoders;

        /* Analog Audio Upstream */
        int _audio_is_running;
        int _audiopixel_format;
        int _is_first_audio_frame;
        int _audiofile_status;
        int _audio_lines_count;
        int _audioframe_count;
        int _audio_upstream_channel;
        int _last_index_irq;    /* The last interrupt index processed. */

        __le32 *_risc_audio_jmp_addr;
        __le32 *_risc_virt_start_addr;
        __le32 *_risc_virt_addr;
        dma_addr_t _risc_phys_addr;
        dma_addr_t _risc_phys_start_addr;

        unsigned int _audiorisc_size;
        unsigned int _audiodata_buf_size;
        __le32 *_audiodata_buf_virt_addr;
        dma_addr_t _audiodata_buf_phys_addr;
        char *_audiofilename;
        u32 audio_upstream_riscbuf_size;
        u32 audio_upstream_databuf_size;
        int _audioframe_index;
        struct work_struct _audio_work_entry;
        char *input_audiofilename;

        /* V4l */
        spinlock_t slock;

        /* Video Upstream */
        struct cx25821_video_out_data vid_out_data[2];
};

static inline struct cx25821_dev *get_cx25821(struct v4l2_device *v4l2_dev)
{
        return container_of(v4l2_dev, struct cx25821_dev, v4l2_dev);
}

extern struct cx25821_board cx25821_boards[];

#define SRAM_CH00  0            /* Video A */
#define SRAM_CH01  1            /* Video B */
#define SRAM_CH02  2            /* Video C */
#define SRAM_CH03  3            /* Video D */
#define SRAM_CH04  4            /* Video E */
#define SRAM_CH05  5            /* Video F */
#define SRAM_CH06  6            /* Video G */
#define SRAM_CH07  7            /* Video H */

#define SRAM_CH08  8            /* Audio A */
#define SRAM_CH09  9            /* Video Upstream I */
#define SRAM_CH10  10           /* Video Upstream J */
#define SRAM_CH11  11           /* Audio Upstream AUD_CHANNEL_B */

#define VID_UPSTREAM_SRAM_CHANNEL_I     SRAM_CH09
#define VID_UPSTREAM_SRAM_CHANNEL_J     SRAM_CH10
#define AUDIO_UPSTREAM_SRAM_CHANNEL_B   SRAM_CH11

struct sram_channel {
        char *name;
        u32 i;
        u32 cmds_start;
        u32 ctrl_start;
        u32 cdt;
        u32 fifo_start;
        u32 fifo_size;
        u32 ptr1_reg;
        u32 ptr2_reg;
        u32 cnt1_reg;
        u32 cnt2_reg;
        u32 int_msk;
        u32 int_stat;
        u32 int_mstat;
        u32 dma_ctl;
        u32 gpcnt_ctl;
        u32 gpcnt;
        u32 aud_length;
        u32 aud_cfg;
        u32 fld_aud_fifo_en;
        u32 fld_aud_risc_en;

        /* For Upstream Video */
        u32 vid_fmt_ctl;
        u32 vid_active_ctl1;
        u32 vid_active_ctl2;
        u32 vid_cdt_size;

        u32 vip_ctl;
        u32 pix_frmt;
        u32 jumponly;
        u32 irq_bit;
};

extern const struct sram_channel cx25821_sram_channels[];

#define cx_read(reg)             readl(dev->lmmio + ((reg)>>2))
#define cx_write(reg, value)     writel((value), dev->lmmio + ((reg)>>2))

#define cx_andor(reg, mask, value) \
        writel((readl(dev->lmmio+((reg)>>2)) & ~(mask)) |\
        ((value) & (mask)), dev->lmmio+((reg)>>2))

#define cx_set(reg, bit)          cx_andor((reg), (bit), (bit))
#define cx_clear(reg, bit)        cx_andor((reg), (bit), 0)

#define Set_GPIO_Bit(Bit)                       (1 << Bit)
#define Clear_GPIO_Bit(Bit)                     (~(1 << Bit))

#define CX25821_ERR(fmt, args...)                       \
        pr_err("(%d): " fmt, dev->board, ##args)
#define CX25821_WARN(fmt, args...)                      \
        pr_warn("(%d): " fmt, dev->board, ##args)
#define CX25821_INFO(fmt, args...)                      \
        pr_info("(%d): " fmt, dev->board, ##args)

extern int cx25821_i2c_register(struct cx25821_i2c *bus);
extern int cx25821_i2c_read(struct cx25821_i2c *bus, u16 reg_addr, int *value);
extern int cx25821_i2c_write(struct cx25821_i2c *bus, u16 reg_addr, int value);
extern int cx25821_i2c_unregister(struct cx25821_i2c *bus);
extern void cx25821_gpio_init(struct cx25821_dev *dev);
extern void cx25821_set_gpiopin_direction(struct cx25821_dev *dev,
                                          int pin_number, int pin_logic_value);

extern int medusa_video_init(struct cx25821_dev *dev);
extern int medusa_set_videostandard(struct cx25821_dev *dev);
extern void medusa_set_resolution(struct cx25821_dev *dev, int width,
                                  int decoder_select);
extern int medusa_set_brightness(struct cx25821_dev *dev, int brightness,
                                 int decoder);
extern int medusa_set_contrast(struct cx25821_dev *dev, int contrast,
                               int decoder);
extern int medusa_set_hue(struct cx25821_dev *dev, int hue, int decoder);
extern int medusa_set_saturation(struct cx25821_dev *dev, int saturation,
                                 int decoder);

extern int cx25821_sram_channel_setup(struct cx25821_dev *dev,
                                      const struct sram_channel *ch, unsigned int bpl,
                                      u32 risc);

extern int cx25821_riscmem_alloc(struct pci_dev *pci,
                                 struct cx25821_riscmem *risc,
                                 unsigned int size);
extern int cx25821_risc_buffer(struct pci_dev *pci, struct cx25821_riscmem *risc,
                               struct scatterlist *sglist,
                               unsigned int top_offset,
                               unsigned int bottom_offset,
                               unsigned int bpl,
                               unsigned int padding, unsigned int lines);
extern int cx25821_risc_databuffer_audio(struct pci_dev *pci,
                                         struct cx25821_riscmem *risc,
                                         struct scatterlist *sglist,
                                         unsigned int bpl,
                                         unsigned int lines, unsigned int lpi);
extern void cx25821_free_buffer(struct cx25821_dev *dev,
                                struct cx25821_buffer *buf);
extern void cx25821_sram_channel_dump(struct cx25821_dev *dev,
                                      const struct sram_channel *ch);
extern void cx25821_sram_channel_dump_audio(struct cx25821_dev *dev,
                                            const struct sram_channel *ch);

extern struct cx25821_dev *cx25821_dev_get(struct pci_dev *pci);
extern void cx25821_print_irqbits(char *name, char *tag, char **strings,
                                  int len, u32 bits, u32 mask);
extern void cx25821_dev_unregister(struct cx25821_dev *dev);
extern int cx25821_sram_channel_setup_audio(struct cx25821_dev *dev,
                                            const struct sram_channel *ch,
                                            unsigned int bpl, u32 risc);

extern void cx25821_set_pixel_format(struct cx25821_dev *dev, int channel,
                                     u32 format);

#endif