[mirror_ubuntu-artful-kernel.git] / drivers / media / pci / tw686x / tw686x.h

/*
 * Copyright (C) 2015 VanguardiaSur - www.vanguardiasur.com.ar
 *
 * 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/mutex.h>
#include <linux/pci.h>
#include <linux/timer.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>
#include <media/videobuf2-v4l2.h>
#include <sound/pcm.h>

#include "tw686x-regs.h"

#define TYPE_MAX_CHANNELS	0x0f
#define TYPE_SECOND_GEN		0x10
#define TW686X_DEF_PHASE_REF	0x1518

#define TW686X_FIELD_MODE	0x3
#define TW686X_FRAME_MODE	0x2
/* 0x1 is reserved */
#define TW686X_SG_MODE		0x0

#define TW686X_AUDIO_PAGE_SZ		4096
#define TW686X_AUDIO_PAGE_MAX		16
#define TW686X_AUDIO_PERIODS_MIN	2
#define TW686X_AUDIO_PERIODS_MAX	TW686X_AUDIO_PAGE_MAX

struct tw686x_format {
	char *name;
	unsigned int fourcc;
	unsigned int depth;
	unsigned int mode;
};

struct tw686x_dma_desc {
	dma_addr_t phys;
	void *virt;
	unsigned int size;
};

struct tw686x_audio_buf {
	dma_addr_t dma;
	void *virt;
	struct list_head list;
};

struct tw686x_v4l2_buf {
	struct vb2_v4l2_buffer vb;
	struct list_head list;
};

struct tw686x_audio_channel {
	struct tw686x_dev *dev;
	struct snd_pcm_substream *ss;
	unsigned int ch;
	struct tw686x_audio_buf *curr_bufs[2];
	struct tw686x_dma_desc dma_descs[2];
	dma_addr_t ptr;

	struct tw686x_audio_buf buf[TW686X_AUDIO_PAGE_MAX];
	struct list_head buf_list;
	spinlock_t lock;
};

struct tw686x_video_channel {
	struct tw686x_dev *dev;

	struct vb2_queue vidq;
	struct list_head vidq_queued;
	struct video_device *device;
	struct tw686x_v4l2_buf *curr_bufs[2];
	struct tw686x_dma_desc dma_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;
	unsigned int h_halve, v_halve;
	unsigned int ch;
	unsigned int num;
	unsigned int fps;
	unsigned int input;
	unsigned int sequence;
	unsigned int pb;
	bool no_signal;
};

/**
 * struct tw686x_dev - global device status
 * @lock: spinlock controlling access to the
 *        shared device registers (DMA enable/disable).
 */
struct tw686x_dev {
	spinlock_t lock;

	struct v4l2_device v4l2_dev;
	struct snd_card *snd_card;

	char name[32];
	unsigned int type;
	struct pci_dev *pci_dev;
	__u32 __iomem *mmio;

	void *alloc_ctx;

	struct tw686x_video_channel *video_channels;
	struct tw686x_audio_channel *audio_channels;

	int audio_rate; /* per-device value */

	struct timer_list dma_delay_timer;
	u32 pending_dma_en; /* must be protected by lock */
	u32 pending_dma_cmd; /* must be protected by lock */
};

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 */
}

void tw686x_enable_channel(struct tw686x_dev *dev, unsigned int channel);
void tw686x_disable_channel(struct tw686x_dev *dev, unsigned int channel);

int tw686x_video_init(struct tw686x_dev *dev);
void tw686x_video_free(struct tw686x_dev *dev);
void tw686x_video_irq(struct tw686x_dev *dev, unsigned long requests,
		      unsigned int pb_status, unsigned int fifo_status,
		      unsigned int *reset_ch);

int tw686x_audio_init(struct tw686x_dev *dev);
void tw686x_audio_free(struct tw686x_dev *dev);
void tw686x_audio_irq(struct tw686x_dev *dev, unsigned long requests,
		      unsigned int pb_status);
Commit	Line	Data
704a84cc EG	1	/*
	2	* Copyright (C) 2015 VanguardiaSur - www.vanguardiasur.com.ar
	3	*
	4	* Copyright (C) 2015 Industrial Research Institute for Automation
	5	* and Measurements PIAP
	6	* Written by Krzysztof Ha?asa
	7	*
	8	* This program is free software; you can redistribute it and/or modify it
	9	* under the terms of version 2 of the GNU General Public License
	10	* as published by the Free Software Foundation.
	11	*/
	12
	13	#include <linux/mutex.h>
	14	#include <linux/pci.h>
	15	#include <linux/timer.h>
	16	#include <linux/videodev2.h>
	17	#include <media/v4l2-common.h>
	18	#include <media/v4l2-ctrls.h>
	19	#include <media/v4l2-device.h>
	20	#include <media/v4l2-ioctl.h>
	21	#include <media/videobuf2-v4l2.h>
	22	#include <sound/pcm.h>
	23
	24	#include "tw686x-regs.h"
	25
	26	#define TYPE_MAX_CHANNELS 0x0f
	27	#define TYPE_SECOND_GEN 0x10
	28	#define TW686X_DEF_PHASE_REF 0x1518
	29
	30	#define TW686X_FIELD_MODE 0x3
	31	#define TW686X_FRAME_MODE 0x2
	32	/* 0x1 is reserved */
	33	#define TW686X_SG_MODE 0x0
	34
	35	#define TW686X_AUDIO_PAGE_SZ 4096
	36	#define TW686X_AUDIO_PAGE_MAX 16
	37	#define TW686X_AUDIO_PERIODS_MIN 2
	38	#define TW686X_AUDIO_PERIODS_MAX TW686X_AUDIO_PAGE_MAX
	39
	40	struct tw686x_format {
	41	char *name;
	42	unsigned int fourcc;
	43	unsigned int depth;
	44	unsigned int mode;
	45	};
	46
	47	struct tw686x_dma_desc {
	48	dma_addr_t phys;
	49	void *virt;
	50	unsigned int size;
	51	};
	52
	53	struct tw686x_audio_buf {
	54	dma_addr_t dma;
	55	void *virt;
	56	struct list_head list;
	57	};
	58
	59	struct tw686x_v4l2_buf {
	60	struct vb2_v4l2_buffer vb;
	61	struct list_head list;
	62	};
	63
	64	struct tw686x_audio_channel {
65	struct tw686x_dev *dev;
66	struct snd_pcm_substream *ss;
67	unsigned int ch;
68	struct tw686x_audio_buf *curr_bufs[2];
69	struct tw686x_dma_desc dma_descs[2];
70	dma_addr_t ptr;
71
72	struct tw686x_audio_buf buf[TW686X_AUDIO_PAGE_MAX];
73	struct list_head buf_list;
74	spinlock_t lock;
75	};
76
77	struct tw686x_video_channel {
78	struct tw686x_dev *dev;
79
80	struct vb2_queue vidq;
81	struct list_head vidq_queued;
82	struct video_device *device;
83	struct tw686x_v4l2_buf *curr_bufs[2];
84	struct tw686x_dma_desc dma_descs[2];
85
86	struct v4l2_ctrl_handler ctrl_handler;
87	const struct tw686x_format *format;
88	struct mutex vb_mutex;
89	spinlock_t qlock;
90	v4l2_std_id video_standard;
91	unsigned int width, height;
92	unsigned int h_halve, v_halve;
93	unsigned int ch;
94	unsigned int num;
95	unsigned int fps;
96	unsigned int input;
97	unsigned int sequence;
98	unsigned int pb;
99	bool no_signal;
100	};
101
102	/**
103	* struct tw686x_dev - global device status
104	* @lock: spinlock controlling access to the
105	* shared device registers (DMA enable/disable).
106	*/
107	struct tw686x_dev {
108	spinlock_t lock;
109
110	struct v4l2_device v4l2_dev;
111	struct snd_card *snd_card;
112
113	char name[32];
114	unsigned int type;
115	struct pci_dev *pci_dev;
116	__u32 __iomem *mmio;
117
118	void *alloc_ctx;
119
120	struct tw686x_video_channel *video_channels;
121	struct tw686x_audio_channel *audio_channels;
122
123	int audio_rate; /* per-device value */
124
125	struct timer_list dma_delay_timer;
126	u32 pending_dma_en; /* must be protected by lock */
127	u32 pending_dma_cmd; /* must be protected by lock */
128	};
129
130	static inline uint32_t reg_read(struct tw686x_dev *dev, unsigned int reg)
131	{
132	return readl(dev->mmio + reg);
133	}
134
135	static inline void reg_write(struct tw686x_dev *dev, unsigned int reg,
136	uint32_t value)
137	{
138	writel(value, dev->mmio + reg);
139	}
140
141	static inline unsigned int max_channels(struct tw686x_dev *dev)
142	{
143	return dev->type & TYPE_MAX_CHANNELS; /* 4 or 8 channels */
144	}
145
146	void tw686x_enable_channel(struct tw686x_dev *dev, unsigned int channel);
147	void tw686x_disable_channel(struct tw686x_dev *dev, unsigned int channel);
148
149	int tw686x_video_init(struct tw686x_dev *dev);
150	void tw686x_video_free(struct tw686x_dev *dev);
151	void tw686x_video_irq(struct tw686x_dev *dev, unsigned long requests,
152	unsigned int pb_status, unsigned int fifo_status,
153	unsigned int *reset_ch);
154
155	int tw686x_audio_init(struct tw686x_dev *dev);
156	void tw686x_audio_free(struct tw686x_dev *dev);
157	void tw686x_audio_irq(struct tw686x_dev *dev, unsigned long requests,
158	unsigned int pb_status);