projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 0ff59f31 KH |
1 | /* |
| 2 | * Copyright (C) 2015 Industrial Research Institute for Automation | |
| 3 | * and Measurements PIAP | |
| 4 | * | |
| 5 | * Written by Krzysztof Ha?asa. | |
| 6 | * | |
| 7 | * This program is free software; you can redistribute it and/or modify it | |
| 8 | * under the terms of version 2 of the GNU General Public License | |
| 9 | * as published by the Free Software Foundation. | |
| 10 | */ | |
| 11 | ||
| 12 | #include <linux/delay.h> | |
| 13 | #include <linux/freezer.h> | |
| 14 | #include <linux/interrupt.h> | |
| 15 | #include <linux/kthread.h> | |
| 16 | #include <linux/mutex.h> | |
| 17 | #include <linux/pci.h> | |
| 18 | #include <media/videobuf2-dma-sg.h> | |
| 19 | #include <linux/videodev2.h> | |
| 20 | #include <media/v4l2-common.h> | |
| 21 | #include <media/v4l2-ctrls.h> | |
| 22 | #include <media/v4l2-device.h> | |
| 23 | #include <media/v4l2-ioctl.h> | |
| 24 | ||
| 25 | #define TYPE_MAX_CHANNELS 0x0F | |
| 26 | #define TYPE_SECOND_GEN 0x10 | |
| 27 | ||
| 28 | struct tw686x_format { | |
| 29 | char *name; | |
| 30 | unsigned int fourcc; | |
| 31 | unsigned int depth; | |
| 32 | unsigned int mode; | |
| 33 | }; | |
| 34 | ||
| 35 | struct dma_desc { | |
| 36 | dma_addr_t phys; | |
| 37 | void *virt; | |
| 38 | unsigned int size; | |
| 39 | }; | |
| 40 | ||
| 41 | struct vdma_desc { | |
| 42 | __le32 flags_length; /* 3 MSBits for flags, 13 LSBits for length */ | |
| 43 | __le32 phys; | |
| 44 | }; | |
| 45 | ||
| 46 | struct tw686x_vb2_buf { | |
| 47 | struct vb2_v4l2_buffer vb; | |
| 48 | struct list_head list; | |
| 49 | }; | |
| 50 | ||
| 51 | struct tw686x_video_channel { | |
| 52 | struct tw686x_dev *dev; | |
| 53 | ||
| 54 | struct vb2_queue vidq; | |
| 55 | struct list_head vidq_queued; | |
| 56 | struct video_device *device; | |
| 57 | struct dma_desc sg_tables[2]; | |
| 58 | struct tw686x_vb2_buf *curr_bufs[2]; | |
| 0ff59f31 KH |
59 | struct vdma_desc *sg_descs[2]; |
| 60 | ||
| 61 | struct v4l2_ctrl_handler ctrl_handler; | |
| 62 | const struct tw686x_format *format; | |
| 63 | struct mutex vb_mutex; | |
| 64 | spinlock_t qlock; | |
| 65 | v4l2_std_id video_standard; | |
| 66 | unsigned int width, height; | |
| 67 | enum v4l2_field field; /* supported TOP, BOTTOM, SEQ_TB and SEQ_BT */ | |
| 68 | unsigned int seq; /* video field or frame counter */ | |
| 69 | unsigned int ch; | |
| 70 | }; | |
| 71 | ||
| 72 | /* global device status */ | |
| 73 | struct tw686x_dev { | |
| 74 | spinlock_t irq_lock; | |
| 75 | ||
| 76 | struct v4l2_device v4l2_dev; | |
| 77 | struct snd_card *card; /* sound card */ | |
| 78 | ||
| 79 | unsigned int video_active; /* active video channel mask */ | |
| 80 | ||
| 81 | char name[32]; | |
| 82 | unsigned int type; | |
| 83 | struct pci_dev *pci_dev; | |
| 84 | __u32 __iomem *mmio; | |
| 85 | ||
| 86 | struct task_struct *video_thread; | |
| 87 | wait_queue_head_t video_thread_wait; | |
| 88 | u32 dma_requests; | |
| 89 | ||
| 90 | struct tw686x_video_channel video_channels[0]; | |
| 91 | }; | |
| 92 | ||
| 93 | static inline uint32_t reg_read(struct tw686x_dev *dev, unsigned int reg) | |
| 94 | { | |
| 95 | return readl(dev->mmio + reg); | |
| 96 | } | |
| 97 | ||
| 98 | static inline void reg_write(struct tw686x_dev *dev, unsigned int reg, | |
| 99 | uint32_t value) | |
| 100 | { | |
| 101 | writel(value, dev->mmio + reg); | |
| 102 | } | |
| 103 | ||
| 104 | static inline unsigned int max_channels(struct tw686x_dev *dev) | |
| 105 | { | |
| 106 | return dev->type & TYPE_MAX_CHANNELS; /* 4 or 8 channels */ | |
| 107 | } | |
| 108 | ||
| 109 | static inline unsigned int is_second_gen(struct tw686x_dev *dev) | |
| 110 | { | |
| 111 | /* each channel has its own DMA SG table */ | |
| 112 | return dev->type & TYPE_SECOND_GEN; | |
| 113 | } | |
| 114 | ||
| e3a900a8 HV |
115 | int tw686x_kh_video_irq(struct tw686x_dev *dev); |
| 116 | int tw686x_kh_video_init(struct tw686x_dev *dev); | |
| 117 | void tw686x_kh_video_free(struct tw686x_dev *dev); |