diff options
Diffstat (limited to 'drivers/staging/media/tw686x-kh/tw686x-kh.h')
| -rw-r--r-- | drivers/staging/media/tw686x-kh/tw686x-kh.h | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/drivers/staging/media/tw686x-kh/tw686x-kh.h b/drivers/staging/media/tw686x-kh/tw686x-kh.h new file mode 100644 index 000000000000..dc257967dbc7 --- /dev/null +++ b/drivers/staging/media/tw686x-kh/tw686x-kh.h @@ -0,0 +1,118 @@ +/* + * Copyright (C) 2015 Industrial Research Institute for Automation + * and Measurements PIAP + * + * Written by Krzysztof Ha?asa. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of version 2 of the GNU General Public License + * as published by the Free Software Foundation. + */ + +#include <linux/delay.h> +#include <linux/freezer.h> +#include <linux/interrupt.h> +#include <linux/kthread.h> +#include <linux/mutex.h> +#include <linux/pci.h> +#include <media/videobuf2-dma-sg.h> +#include <linux/videodev2.h> +#include <media/v4l2-common.h> +#include <media/v4l2-ctrls.h> +#include <media/v4l2-device.h> +#include <media/v4l2-ioctl.h> + +#define TYPE_MAX_CHANNELS 0x0F +#define TYPE_SECOND_GEN 0x10 + +struct tw686x_format { + char *name; + unsigned int fourcc; + unsigned int depth; + unsigned int mode; +}; + +struct dma_desc { + dma_addr_t phys; + void *virt; + unsigned int size; +}; + +struct vdma_desc { + __le32 flags_length; /* 3 MSBits for flags, 13 LSBits for length */ + __le32 phys; +}; + +struct tw686x_vb2_buf { + struct vb2_v4l2_buffer vb; + struct list_head list; +}; + +struct tw686x_video_channel { + struct tw686x_dev *dev; + + struct vb2_queue vidq; + struct list_head vidq_queued; + struct video_device *device; + struct dma_desc sg_tables[2]; + struct tw686x_vb2_buf *curr_bufs[2]; + void *alloc_ctx; + struct vdma_desc *sg_descs[2]; + + struct v4l2_ctrl_handler ctrl_handler; + const struct tw686x_format *format; + struct mutex vb_mutex; + spinlock_t qlock; + v4l2_std_id video_standard; + unsigned int width, height; + enum v4l2_field field; /* supported TOP, BOTTOM, SEQ_TB and SEQ_BT */ + unsigned int seq; /* video field or frame counter */ + unsigned int ch; +}; + +/* global device status */ +struct tw686x_dev { + spinlock_t irq_lock; + + struct v4l2_device v4l2_dev; + struct snd_card *card; /* sound card */ + + unsigned int video_active; /* active video channel mask */ + + char name[32]; + unsigned int type; + struct pci_dev *pci_dev; + __u32 __iomem *mmio; + + struct task_struct *video_thread; + wait_queue_head_t video_thread_wait; + u32 dma_requests; + + struct tw686x_video_channel video_channels[0]; +}; + +static inline uint32_t reg_read(struct tw686x_dev *dev, unsigned int reg) +{ + return readl(dev->mmio + reg); +} + +static inline void reg_write(struct tw686x_dev *dev, unsigned int reg, + uint32_t value) +{ + writel(value, dev->mmio + reg); +} + +static inline unsigned int max_channels(struct tw686x_dev *dev) +{ + return dev->type & TYPE_MAX_CHANNELS; /* 4 or 8 channels */ +} + +static inline unsigned int is_second_gen(struct tw686x_dev *dev) +{ + /* each channel has its own DMA SG table */ + return dev->type & TYPE_SECOND_GEN; +} + +int tw686x_kh_video_irq(struct tw686x_dev *dev); +int tw686x_kh_video_init(struct tw686x_dev *dev); +void tw686x_kh_video_free(struct tw686x_dev *dev); |