V4L/DVB (12730): Add conexant cx25821 driver

GIT_BRANCH=devel
GIT_AUTHOR_DATE=1252851239
GIT_AUTHOR_NAME=Palash Bandyopadhyay
GIT_AUTHOR_EMAIL=Palash.Bandyopadhyay@conexant.com
Add conexant cx25821 driver release v106 of the Athena driver.

Signed-off-by: Palash Bandyopadhyay <palash.bandyopadhyay@conexant.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 589 insertions, 0 deletions

diff --git a/drivers/staging/cx25821/cx25821.h b/drivers/staging/cx25821/cx25821.h
new file mode 100644
index 000000000000..074ea34c3b25
--- /dev/null
+++ b/drivers/staging/cx25821/cx25821.h
@@ -0,0 +1,589 @@
+/*
+ *  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
+ *
+ *  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.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+
+#ifndef CX25821_H_
+#define CX25821_H_
+
+#include <linux/pci.h>
+#include <linux/i2c.h>
+#include <linux/i2c-algo-bit.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/tuner.h>
+#include <media/tveeprom.h>
+#include <media/videobuf-dma-sg.h>
+#include <media/videobuf-dvb.h>
+
+#include "btcx-risc.h"
+#include "cx25821-reg.h"
+#include "cx25821-medusa-reg.h"
+#include "cx25821-sram.h"
+#include "cx25821-audio.h"
+#include "media/cx2341x.h"
+
+#include <linux/version.h>
+#include <linux/mutex.h>
+
+#define CX25821_VERSION_CODE KERNEL_VERSION(0, 0, 106)
+
+#define UNSET (-1U)
+#define NO_SYNC_LINE (-1U)
+
+#define CX25821_MAXBOARDS 2
+
+#define TRUE    1
+#define FALSE   0
+#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 INPUT(nr) (&cx25821_boards[dev->board].input[nr])
+#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 RESOURCE_VIDEO_IOCTL  4096
+
+
+#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
+#define VID_CHANNEL_NUM 8
+
+struct cx25821_fmt {
+    char  *name;
+    u32   fourcc;          /* v4l2 format id */
+    int   depth;
+    int   flags;
+    u32   cxformat;
+};
+
+struct cx25821_ctrl {
+    struct v4l2_queryctrl v;
+    u32                   off;
+    u32                   reg;
+    u32                   mask;
+    u32                   shift;
+};
+
+struct cx25821_tvnorm {
+    char        *name;
+    v4l2_std_id id;
+    u32     cxiformat;
+    u32     cxoformat;
+};
+
+struct cx25821_fh {
+    struct cx25821_dev         *dev;
+    enum v4l2_buf_type         type;
+    int                        radio;
+    u32                        resources;
+
+    enum v4l2_priority	       prio;
+
+    /* video overlay */
+    struct v4l2_window         win;
+    struct v4l2_clip           *clips;
+    unsigned int               nclips;
+
+    /* video capture */
+    struct cx25821_fmt         *fmt;
+    unsigned int               width, height;
+
+    /* vbi capture */
+    struct videobuf_queue      vidq;
+    struct videobuf_queue      vbiq;
+
+    /* H264 Encoder specifics ONLY */
+    struct videobuf_queue      mpegq;
+    atomic_t                   v4l_reading;
+};
+
+enum cx25821_itype {
+    CX25821_VMUX_COMPOSITE = 1,
+    CX25821_VMUX_SVIDEO,
+    CX25821_VMUX_DEBUG,
+    CX25821_RADIO,
+};
+
+enum cx25821_src_sel_type {
+    CX25821_SRC_SEL_EXT_656_VIDEO = 0,
+    CX25821_SRC_SEL_PARALLEL_MPEG_VIDEO
+};
+
+/* buffer for one video frame */
+struct cx25821_buffer {
+    /* common v4l buffer stuff -- must be first */
+    struct videobuf_buffer vb;
+
+    /* cx25821 specific */
+    unsigned int           bpl;
+    struct btcx_riscmem    risc;
+    struct cx25821_fmt     *fmt;
+    u32                    count;
+};
+
+struct cx25821_input {
+    enum cx25821_itype type;
+    unsigned int    vmux;
+    u32             gpio0, gpio1, gpio2, gpio3;
+};
+
+typedef enum {
+    CX25821_UNDEFINED = 0,
+    CX25821_RAW,
+    CX25821_264
+} port_t;
+
+struct cx25821_board {
+    char                *name;
+    port_t              porta, portb, portc;
+    unsigned int        tuner_type;
+    unsigned int        radio_type;
+    unsigned char       tuner_addr;
+    unsigned char       radio_addr;
+
+    u32         clk_freq;
+    struct cx25821_input    input[2];
+};
+
+struct cx25821_subid {
+    u16     subvendor;
+    u16     subdevice;
+    u32     card;
+};
+
+struct cx25821_i2c {
+    struct cx25821_dev *dev;
+
+    int                        nr;
+
+    /* i2c i/o */
+    struct i2c_adapter         i2c_adap;
+    struct i2c_algo_bit_data   i2c_algo;
+    struct i2c_client          i2c_client;
+    u32                        i2c_rc;
+
+    /* cx25821 registers used for raw addess */
+    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;
+    struct list_head       queued;
+    struct timer_list      timeout;
+    struct btcx_riscmem    stopper;
+    u32                    count;
+};
+
+struct cx25821_data {
+       struct cx25821_dev *dev;
+       struct sram_channel *channel;
+};
+
+struct cx25821_dev {
+    struct list_head           devlist;
+    atomic_t                   refcount;
+    struct v4l2_device         v4l2_dev;
+
+    struct v4l2_prio_state     prio;
+
+    /* 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;
+
+    u32                        clk_freq;
+
+    /* I2C adapters: Master 1 & 2 (External) & Master 3 (Internal only) */
+    struct cx25821_i2c         i2c_bus[3];
+
+    int                        nr;
+    struct mutex               lock;
+
+    /* board details */
+    unsigned int               board;
+    char                       name[32];
+
+    /* sram configuration */
+    struct sram_channel        *sram_channels;
+
+    /* Analog video */
+    u32                        resources;
+    unsigned int               input;
+    u32                        tvaudio;
+    v4l2_std_id                tvnorm;
+    unsigned int               tuner_type;
+    unsigned char              tuner_addr;
+    unsigned int               radio_type;
+    unsigned char              radio_addr;
+    unsigned int               has_radio;
+    unsigned int               videc_type;
+    unsigned char              videc_addr;
+    unsigned short             _max_num_decoders;
+
+    int                        ctl_bright;
+    int                        ctl_contrast;
+    int                        ctl_hue;
+    int                        ctl_saturation;
+
+    struct cx25821_data        timeout_data[MAX_VID_CHANNEL_NUM];
+
+    /* 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_select;
+    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;           
+
+    /* V4l */
+    u32                        freq;
+    struct video_device        *video_dev[MAX_VID_CHANNEL_NUM];
+    struct video_device        *vbi_dev;
+    struct video_device        *radio_dev;
+    struct video_device        *ioctl_dev;
+
+    struct cx25821_dmaqueue    vidq[MAX_VID_CHANNEL_NUM];
+    spinlock_t                 slock;
+    
+    /* Video Upstream */
+    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;
+    int _channel_upstream_select;
+    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;
+    char * _filename;       
+    char * _defaultname;      
+
+
+    int _line_size_ch2;
+    int _prog_cnt_ch2;
+    int _pixel_format_ch2;
+    int _is_first_frame_ch2;
+    int _is_running_ch2;
+    int _file_status_ch2;
+    int _lines_count_ch2;
+    int _frame_count_ch2;
+    int _channel2_upstream_select;
+    unsigned int _risc_size_ch2;
+
+    __le32 *     _dma_virt_start_addr_ch2;
+    __le32 *     _dma_virt_addr_ch2;
+    dma_addr_t   _dma_phys_addr_ch2;
+    dma_addr_t   _dma_phys_start_addr_ch2;
+
+    unsigned int _data_buf_size_ch2;
+    __le32 *     _data_buf_virt_addr_ch2;
+    dma_addr_t   _data_buf_phys_addr_ch2;
+    char * _filename_ch2;    
+    char * _defaultname_ch2; 
+
+    /* MPEG Encoder ONLY settings */
+    u32                        cx23417_mailbox;
+    struct cx2341x_mpeg_params mpeg_params;
+    struct video_device        *v4l_device;
+    atomic_t                   v4l_reader_count;
+    struct cx25821_tvnorm      encodernorm;
+    
+    u32                        upstream_riscbuf_size;
+    u32                        upstream_databuf_size;
+    u32                        upstream_riscbuf_size_ch2;
+    u32                        upstream_databuf_size_ch2;
+    u32                        audio_upstream_riscbuf_size;
+    u32                        audio_upstream_databuf_size;
+    int                        _isNTSC;    
+    int                        _frame_index;     
+    int                        _audioframe_index;  
+    struct workqueue_struct *  _irq_queues;       
+    struct work_struct         _irq_work_entry;         
+    struct workqueue_struct *  _irq_queues_ch2;       
+    struct work_struct         _irq_work_entry_ch2;         
+    struct workqueue_struct *  _irq_audio_queues;       
+    struct work_struct         _audio_work_entry; 
+    char *input_filename;
+    char *input_filename_ch2;
+    int  _frame_index_ch2;  
+    int  _isNTSC_ch2;    
+    char *vid_stdname_ch2;
+    int pixel_format_ch2;
+    int channel_select_ch2;
+    int command_ch2;
+    char *input_audiofilename;
+    char *vid_stdname;
+    int pixel_format;
+    int channel_select;
+    int command;
+    int pixel_formats[VID_CHANNEL_NUM];
+    int use_cif_resolution[VID_CHANNEL_NUM];
+    int cif_width[VID_CHANNEL_NUM];
+    int channel_opened;
+};
+
+
+struct upstream_user_struct {
+    char *input_filename;
+    char *vid_stdname;
+    int pixel_format;
+    int channel_select;
+    int command;
+};
+
+struct downstream_user_struct {
+    char *vid_stdname;
+    int pixel_format;
+    int cif_resolution_enable;
+    int cif_width;
+    int decoder_select;
+    int command;
+    int reg_address;
+    int reg_data;
+};
+
+extern struct upstream_user_struct *up_data;
+
+static inline struct cx25821_dev *get_cx25821(struct v4l2_device *v4l2_dev)
+{
+    return container_of(v4l2_dev, struct cx25821_dev, v4l2_dev);
+}
+
+#define cx25821_call_all(dev, o, f, args...) \
+    v4l2_device_call_all(&dev->v4l2_dev, 0, o, f, ##args)
+    
+extern struct list_head cx25821_devlist;
+extern struct cx25821_board cx25821_boards[];
+extern struct cx25821_subid cx25821_subids[];
+
+#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
+#define VIDEO_IOCTL_CH  11
+
+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 struct sram_channel cx25821_sram_channels[];
+
+#define STATUS_SUCCESS         0
+#define STATUS_UNSUCCESSFUL    -1
+
+#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...)      printk(KERN_ERR  "cx25821(%d): " fmt, dev->board, ## args)
+#define CX25821_WARN(fmt, args...)     printk(KERN_WARNING "cx25821(%d): " fmt, dev->board , ## args)
+#define CX25821_INFO(fmt, args...)     printk(KERN_INFO "cx25821(%d): " fmt, dev->board , ## args)
+
+extern int  cx25821_i2c_register(struct cx25821_i2c *bus);
+extern void cx25821_card_setup(struct cx25821_dev *dev);
+extern int  cx25821_ir_init(struct cx25821_dev *dev);
+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, struct sram_channel *ch, unsigned int bpl, u32 risc);
+
+extern int cx25821_risc_buffer(struct pci_dev *pci, struct btcx_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 btcx_riscmem *risc,
+                   struct scatterlist *sglist,
+                   unsigned int bpl,
+                   unsigned int lines,
+                   unsigned int lpi);           
+extern void cx25821_free_buffer(struct videobuf_queue *q, struct cx25821_buffer *buf);
+extern int cx25821_risc_stopper(struct pci_dev *pci, struct btcx_riscmem *risc,u32 reg, u32 mask, u32 value);
+extern void cx25821_sram_channel_dump(struct cx25821_dev *dev, struct sram_channel *ch);
+extern void cx25821_sram_channel_dump_audio(struct cx25821_dev *dev, 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,
+                   struct sram_channel *ch,
+                   unsigned int bpl, u32 risc);
+                   
+extern int  cx25821_vidupstream_init_ch1(struct cx25821_dev *dev, int channel_select, int pixel_format);
+extern int  cx25821_vidupstream_init_ch2(struct cx25821_dev *dev, int channel_select, int pixel_format);
+extern int  cx25821_audio_upstream_init(struct cx25821_dev *dev, int channel_select);
+extern void cx25821_free_mem_upstream_ch1(struct cx25821_dev *dev);            
+extern void cx25821_free_mem_upstream_ch2(struct cx25821_dev *dev);             
+extern void cx25821_free_mem_upstream_audio(struct cx25821_dev *dev);   
+extern void cx25821_start_upstream_video_ch1(struct cx25821_dev *dev, struct upstream_user_struct *up_data);  
+extern void cx25821_start_upstream_video_ch2(struct cx25821_dev *dev, struct upstream_user_struct *up_data);  
+extern void cx25821_start_upstream_audio(struct cx25821_dev *dev, struct upstream_user_struct *up_data);    
+extern void cx25821_stop_upstream_video_ch1(struct cx25821_dev *dev);    
+extern void cx25821_stop_upstream_video_ch2(struct cx25821_dev *dev);  
+extern void cx25821_stop_upstream_audio(struct cx25821_dev *dev); 
+extern int  cx25821_sram_channel_setup_upstream( struct cx25821_dev *dev, struct sram_channel *ch, unsigned int bpl, u32 risc);
+extern void cx25821_set_pixel_format(struct cx25821_dev *dev, int channel, u32 format);
+extern void cx25821_videoioctl_unregister(struct cx25821_dev *dev);
+extern struct video_device *cx25821_vdev_init(struct cx25821_dev *dev,
+                    struct pci_dev *pci,
+                    struct video_device *template,
+                    char *type);
+#endif