[RFC V1 1/8] smi2021: Add the header file

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This is the header file for the smi2021 module.

Signed-off-by: Jon Arne Jørgensen <jonarne@xxxxxxxxxx>
---
 drivers/media/usb/smi2021/smi2021.h | 228 ++++++++++++++++++++++++++++++++++++
 1 file changed, 228 insertions(+)
 create mode 100644 drivers/media/usb/smi2021/smi2021.h

diff --git a/drivers/media/usb/smi2021/smi2021.h b/drivers/media/usb/smi2021/smi2021.h
new file mode 100644
index 0000000..eba0fef
--- /dev/null
+++ b/drivers/media/usb/smi2021/smi2021.h
@@ -0,0 +1,228 @@
+/*******************************************************************************
+ * smi2021.h                                                                   *
+ *                                                                             *
+ * USB Driver for SMI2021 - EasyCap                                            *
+ * USB ID 1c88:003c                                                            *
+ *                                                                             *
+ * *****************************************************************************
+ *
+ * Copyright 2011-2013 Jon Arne Jørgensen
+ * <jonjon.arnearne--a.t--gmail.com>
+ *
+ * Copyright 2011, 2012 Tony Brown, Michal Demin, Jeffry Johnston
+ *
+ * This file is part of SMI2021
+ * http://code.google.com/p/easycap-somagic-linux/
+ *
+ * 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, see <http://www.gnu.org/licenses/>.
+ *
+ * This driver is heavily influensed by the STK1160 driver.
+ * Copyright (C) 2012 Ezequiel Garcia
+ * <elezegarcia--a.t--gmail.com>
+ *
+ */
+
+#ifndef SMI2021_H
+#define SMI2021_H
+
+#include <linux/module.h>
+#include <linux/usb.h>
+#include <linux/types.h>
+#include <linux/spinlock_types.h>
+#include <linux/slab.h>
+#include <linux/i2c.h>
+
+#include <media/v4l2-event.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-ioctl.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-chip-ident.h>
+#include <media/videobuf2-core.h>
+#include <media/videobuf2-vmalloc.h>
+#include <media/saa7115.h>
+
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/initval.h>
+
+#define SMI2021_DRIVER_VERSION "0.1"
+
+/* For ISOC */
+#define SMI2021_MAX_PKT_SIZE	3072
+#define SMI2021_ISOC_PACKETS	10	/* 64 */
+#define SMI2021_ISOC_BUFS	4	/* 16 */
+#define SMI2021_ISOC_EP		0x82
+
+/* The structure of the array we use to send i2c settings to the device */
+#define SMI2021_CTRL_HEAD 0x00
+#define	SMI2021_CTRL_ADDR 0x01
+#define SMI2021_CTRL_BM_DATA_TYPE 0x02
+#define	SMI2021_CTRL_BM_DATA_OFFSET 0x03
+#define	SMI2021_CTRL_DATA_SIZE 0x04
+
+#define SMI2021_CTRL_REG_HI 0x05
+#define SMI2021_CTRL_REG_LO 0x06
+#define SMI2021_CTRL_REG_VAL 0x07
+
+#define SMI2021_CTRL_I2C_REG 0x05
+#define SMI2021_CTRL_I2C_VAL 0x06
+#define SMI2021_CTRL_I2C_RCV_VAL 0x05
+
+/* General video constants */
+#define SMI2021_BYTES_PER_LINE	1440
+#define SMI2021_PAL_LINES	576
+#define SMI2021_NTSC_LINES	486
+
+/* Timing Referance Codes, see saa7113 datasheet */
+#define SMI2021_TRC_EAV		0x10
+#define SMI2021_TRC_VBI		0x20
+#define SMI2021_TRC_FIELD_2	0x40
+#define SMI2021_TRC		0x80
+
+#define DEBUG
+#ifdef DEBUG
+#define smi2021_dbg(fmt, args...)		\
+	pr_debug("smi2021::%s: " fmt, __func__, \
+			##args)
+#else
+#define smi2021_dbg(fmt, args...)
+#endif
+
+#define smi2021_info(fmt, args...)		\
+	pr_info("smi2021::%s: " fmt,		\
+		__func__, ##args)
+
+#define smi2021_warn(fmt, args...)		\
+	pr_warn("smi2021::%s: " fmt,		\
+		__func__, ##args)
+
+#define smi2021_err(fmt, args...)		\
+	pr_err("smi2021::%s: " fmt,		\
+		__func__, ##args)
+
+enum smi2021_sync {
+	HSYNC,
+	SYNCZ1,
+	SYNCZ2,
+	TRC
+};
+
+/* Buffer for one video frame */
+struct smi2021_buffer {
+	/* Common vb2 stuff, must be first */
+	struct vb2_buffer		vb;
+	struct list_head		list;
+
+	void				*mem;
+	unsigned int			length;
+
+	bool				second_field;
+	bool				in_blank;
+	unsigned int			pos;
+
+	/* ActiveVideo - Line counter */
+	u16				trc_av;
+};
+
+struct smi2021_isoc_ctl {
+	int max_pkt_size;
+	int num_bufs;
+	struct urb **urb;
+	char **transfer_buffer;
+	struct smi2021_buffer *buf;
+};
+
+
+struct smi2021_fmt {
+	char				*name;
+	u32				fourcc;
+	int				depth;
+};
+
+struct smi2021_input {
+	char				*name;
+	int				type;
+};
+
+struct smi2021_dev {
+	struct v4l2_device		v4l2_dev;
+	struct video_device		vdev;
+	struct v4l2_ctrl_handler	ctrl_handler;
+
+	struct v4l2_subdev		*sd_saa7113;
+
+	struct usb_device		*udev;
+	struct device			*dev;
+
+	/* Capture buffer queue */
+	struct vb2_queue		vb_vidq;
+
+	/* ISOC control struct */
+	struct list_head		avail_bufs;
+	struct smi2021_isoc_ctl		isoc_ctl;
+
+	int				width;		/* frame width */
+	int				height;		/* frame height */
+	unsigned int			ctl_input;	/* selected input */
+	v4l2_std_id			norm;		/* current norm */
+	struct smi2021_fmt		*fmt;		/* selected format */
+	unsigned int			buf_count;	/* for video buffers */
+
+	/* i2c i/o */
+	struct i2c_adapter		i2c_adap;
+	struct i2c_client		i2c_client;
+
+	struct mutex			v4l2_lock;
+	struct mutex			vb_queue_lock;
+	spinlock_t			buf_lock;
+
+	enum smi2021_sync		sync_state;
+
+	/* audio */
+	struct snd_card			*snd_card;
+	struct snd_pcm_substream	*pcm_substream;
+
+	unsigned int			pcm_write_ptr;
+	unsigned int			pcm_complete_samples;
+
+	u8				pcm_read_offset;
+	struct work_struct		adev_capture_trigger;
+	atomic_t			adev_capturing;
+};
+
+/* Provided by smi2021_main.c */
+int smi2021_write_reg(struct smi2021_dev *dev, u8 addr, u16 reg, u8 val);
+int smi2021_read_reg(struct smi2021_dev *dev, u8 addr, u16 reg, u8 *val);
+
+/* Provided by smi2021_v4l2.c */
+int smi2021_vb2_setup(struct smi2021_dev *dev);
+int smi2021_video_register(struct smi2021_dev *dev);
+void smi2021_clear_queue(struct smi2021_dev *dev);
+
+/* Provided by smi2021_video.c */
+int smi2021_alloc_isoc(struct smi2021_dev *dev);
+void smi2021_free_isoc(struct smi2021_dev *dev);
+void smi2021_cancel_isoc(struct smi2021_dev *dev);
+void smi2021_uninit_isoc(struct smi2021_dev *dev);
+
+/* Provided by smi2021_i2c.c */
+int smi2021_i2c_register(struct smi2021_dev *dev);
+int smi2021_i2c_unregister(struct smi2021_dev *dev);
+
+/* Provided by smi2021_audio.c */
+int smi2021_snd_register(struct smi2021_dev *dev);
+void smi2021_snd_unregister(struct smi2021_dev *dev);
+void smi2021_audio(struct smi2021_dev *dev, u8 *data, int len);
+#endif /* SMI2021_H */
-- 
1.8.1.1

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