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191 lines
4.5 KiB
191 lines
4.5 KiB
/* SPDX-License-Identifier: GPL-2.0-or-later */ |
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/* |
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* STK1160 driver |
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* |
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* Copyright (C) 2012 Ezequiel Garcia |
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* <elezegarcia--a.t--gmail.com> |
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* |
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* Based on Easycap driver by R.M. Thomas |
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* Copyright (C) 2010 R.M. Thomas |
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* <rmthomas--a.t--sciolus.org> |
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*/ |
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#include <linux/i2c.h> |
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#include <sound/core.h> |
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#include <sound/ac97_codec.h> |
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#include <media/videobuf2-v4l2.h> |
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#include <media/v4l2-device.h> |
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#include <media/v4l2-ctrls.h> |
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#define STK1160_VERSION "0.9.5" |
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#define STK1160_VERSION_NUM 0x000905 |
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/* Decide on number of packets for each buffer */ |
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#define STK1160_NUM_PACKETS 64 |
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/* Number of buffers for isoc transfers */ |
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#define STK1160_NUM_BUFS 16 |
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#define STK1160_MIN_BUFS 1 |
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/* TODO: This endpoint address should be retrieved */ |
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#define STK1160_EP_VIDEO 0x82 |
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#define STK1160_EP_AUDIO 0x81 |
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/* Max and min video buffers */ |
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#define STK1160_MIN_VIDEO_BUFFERS 8 |
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#define STK1160_MAX_VIDEO_BUFFERS 32 |
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#define STK1160_MIN_PKT_SIZE 3072 |
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#define STK1160_MAX_INPUT 4 |
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#define STK1160_SVIDEO_INPUT 4 |
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#define STK1160_AC97_TIMEOUT 50 |
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#define STK1160_I2C_TIMEOUT 100 |
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/* TODO: Print helpers |
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* I could use dev_xxx, pr_xxx, v4l2_xxx or printk. |
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* However, there isn't a solid consensus on which |
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* new drivers should use. |
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* |
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*/ |
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#ifdef DEBUG |
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#define stk1160_dbg(fmt, args...) \ |
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printk(KERN_DEBUG "stk1160: " fmt, ## args) |
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#else |
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#define stk1160_dbg(fmt, args...) |
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#endif |
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#define stk1160_info(fmt, args...) \ |
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pr_info("stk1160: " fmt, ## args) |
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#define stk1160_warn(fmt, args...) \ |
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pr_warn("stk1160: " fmt, ## args) |
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#define stk1160_err(fmt, args...) \ |
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pr_err("stk1160: " fmt, ## args) |
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/* Buffer for one video frame */ |
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struct stk1160_buffer { |
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/* common v4l buffer stuff -- must be first */ |
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struct vb2_v4l2_buffer vb; |
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struct list_head list; |
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void *mem; |
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unsigned int length; /* buffer length */ |
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unsigned int bytesused; /* bytes written */ |
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int odd; /* current oddity */ |
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/* |
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* Since we interlace two fields per frame, |
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* this is different from bytesused. |
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*/ |
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unsigned int pos; /* current pos inside buffer */ |
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}; |
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struct stk1160_isoc_ctl { |
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/* max packet size of isoc transaction */ |
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int max_pkt_size; |
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/* number of allocated urbs */ |
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int num_bufs; |
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/* urb for isoc transfers */ |
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struct urb **urb; |
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/* transfer buffers for isoc transfer */ |
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char **transfer_buffer; |
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/* current buffer */ |
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struct stk1160_buffer *buf; |
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}; |
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struct stk1160_fmt { |
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u32 fourcc; /* v4l2 format id */ |
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int depth; |
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}; |
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struct stk1160 { |
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struct v4l2_device v4l2_dev; |
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struct video_device vdev; |
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struct v4l2_ctrl_handler ctrl_handler; |
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struct device *dev; |
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struct usb_device *udev; |
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/* saa7115 subdev */ |
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struct v4l2_subdev *sd_saa7115; |
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/* isoc control struct */ |
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struct list_head avail_bufs; |
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/* video capture */ |
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struct vb2_queue vb_vidq; |
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/* max packet size of isoc transaction */ |
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int max_pkt_size; |
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/* array of wMaxPacketSize */ |
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unsigned int *alt_max_pkt_size; |
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/* alternate */ |
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int alt; |
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/* Number of alternative settings */ |
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int num_alt; |
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struct stk1160_isoc_ctl isoc_ctl; |
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/* frame properties */ |
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int width; /* current frame width */ |
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int height; /* current frame height */ |
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unsigned int ctl_input; /* selected input */ |
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v4l2_std_id norm; /* current norm */ |
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struct stk1160_fmt *fmt; /* selected format */ |
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unsigned int sequence; |
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/* i2c i/o */ |
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struct i2c_adapter i2c_adap; |
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struct i2c_client i2c_client; |
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struct mutex v4l_lock; |
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struct mutex vb_queue_lock; |
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spinlock_t buf_lock; |
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struct file *fh_owner; /* filehandle ownership */ |
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/* EXPERIMENTAL */ |
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struct snd_card *snd_card; |
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}; |
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struct regval { |
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u16 reg; |
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u16 val; |
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}; |
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/* Provided by stk1160-v4l.c */ |
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int stk1160_vb2_setup(struct stk1160 *dev); |
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int stk1160_video_register(struct stk1160 *dev); |
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void stk1160_video_unregister(struct stk1160 *dev); |
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void stk1160_clear_queue(struct stk1160 *dev); |
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/* Provided by stk1160-video.c */ |
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int stk1160_alloc_isoc(struct stk1160 *dev); |
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void stk1160_free_isoc(struct stk1160 *dev); |
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void stk1160_cancel_isoc(struct stk1160 *dev); |
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void stk1160_uninit_isoc(struct stk1160 *dev); |
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/* Provided by stk1160-i2c.c */ |
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int stk1160_i2c_register(struct stk1160 *dev); |
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int stk1160_i2c_unregister(struct stk1160 *dev); |
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/* Provided by stk1160-core.c */ |
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int stk1160_read_reg(struct stk1160 *dev, u16 reg, u8 *value); |
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int stk1160_write_reg(struct stk1160 *dev, u16 reg, u16 value); |
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int stk1160_write_regs_req(struct stk1160 *dev, u8 req, u16 reg, |
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char *buf, int len); |
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int stk1160_read_reg_req_len(struct stk1160 *dev, u8 req, u16 reg, |
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char *buf, int len); |
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void stk1160_select_input(struct stk1160 *dev); |
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/* Provided by stk1160-ac97.c */ |
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void stk1160_ac97_setup(struct stk1160 *dev);
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