[PATCH] v4l: 716: support for em28xx board family

- Added support for em28xx board family

Signed-off-by: Ludovico Cavedon <cavedon@sssup.it>
Signed-off-by: Markus Rechberger <mrechberger@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@brturbo.com.br>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 479 insertions, 0 deletions

diff --git a/drivers/media/video/em28xx/em28xx.h b/drivers/media/video/em28xx/em28xx.h
new file mode 100644
index 00000000000..7779121a3de
--- /dev/null
+++ b/drivers/media/video/em28xx/em28xx.h
@@ -0,0 +1,479 @@
+/*
+   em2820-cards.c - driver for Empia EM2820/2840 USB video capture devices
+
+   Copyright (C) 2005 Markus Rechberger <mrechberger@gmail.com>
+                      Ludovico Cavedon <cavedon@sssup.it>
+                      Mauro Carvalho Chehab <mchehab@brturbo.com.br>
+
+   Based on the em2800 driver from Sascha Sommer <saschasommer@freenet.de>
+
+   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, write to the Free Software
+   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#ifndef _EM2820_H
+#define _EM2820_H
+
+#include <linux/videodev.h>
+#include <linux/i2c.h>
+
+/* maximum number of frames that can be queued */
+#define EM2820_NUM_FRAMES 5
+/* number of frames that get used for v4l2_read() */
+#define EM2820_NUM_READ_FRAMES 2
+
+/* number of buffers for isoc transfers */
+#define EM2820_NUM_BUFS 5
+
+/* number of packets for each buffer */
+// windows requests only 40 packets .. so we better do the same
+// this is what I found out for all alternate numbers there!
+
+#define EM2820_NUM_PACKETS 40
+
+/* packet size for each packet */
+/* no longer needed: read from endpoint descriptor */
+//#define EM2820_MAX_PACKET_SIZE 3072 //7
+//#define EM2820_MAX_PACKET_SIZE 2892 //6
+//#define EM2820_MAX_PACKET_SIZE 2580 //5
+//#define EM2820_MAX_PACKET_SIZE 1448 //2
+
+/* default alternate; 0 means choose the best */
+#define EM2820_PINOUT 0
+#define EM2820_MAX_ALT 7
+
+#define EM2820_INTERLACED_DEFAULT 1
+
+/*
+#define (use usbview if you want to get the other alternate number infos)
+#define
+#define alternate number 2
+#define 			Endpoint Address: 82
+			Direction: in
+			Attribute: 1
+			Type: Isoc
+			Max Packet Size: 1448
+			Interval: 125us
+
+  alternate number 7
+
+			Endpoint Address: 82
+			Direction: in
+			Attribute: 1
+			Type: Isoc
+			Max Packet Size: 3072
+			Interval: 125us
+*/
+
+/* time to wait when stopping the isoc transfer */
+#define EM2820_URB_TIMEOUT       msecs_to_jiffies(EM2820_NUM_BUFS * EM2820_NUM_PACKETS)
+
+/* the various frame states */
+enum em2820_frame_state {
+	F_UNUSED = 0,
+	F_QUEUED,
+	F_GRABBING,
+	F_DONE,
+	F_ERROR,
+};
+
+/* stream states */
+enum em2820_stream_state {
+	STREAM_OFF,
+	STREAM_INTERRUPT,
+	STREAM_ON,
+};
+
+/* frames */
+struct em2820_frame_t {
+	void *bufmem;
+	struct v4l2_buffer buf;
+	enum em2820_frame_state state;
+	struct list_head frame;
+	unsigned long vma_use_count;
+	int top_field;
+	int fieldbytesused;
+};
+
+/* io methods */
+enum em2820_io_method {
+	IO_NONE,
+	IO_READ,
+	IO_MMAP,
+};
+
+/* inputs */
+
+#define MAX_EM2820_INPUT 4
+enum enum2820_itype {
+	EM2820_VMUX_COMPOSITE1 = 1,
+	EM2820_VMUX_COMPOSITE2,
+	EM2820_VMUX_COMPOSITE3,
+	EM2820_VMUX_COMPOSITE4,
+	EM2820_VMUX_SVIDEO,
+	EM2820_VMUX_TELEVISION,
+	EM2820_VMUX_CABLE,
+	EM2820_VMUX_DVB,
+	EM2820_VMUX_DEBUG,
+	EM2820_RADIO,
+};
+
+struct em2820_input {
+	enum enum2820_itype type;
+	unsigned int vmux;
+	unsigned int amux;
+};
+
+#define INPUT(nr) (&em2820_boards[dev->model].input[nr])
+
+enum em2820_decoder {
+	EM2820_TVP5150,
+	EM2820_SAA7113,
+	EM2820_SAA7114
+};
+
+struct em2820_board {
+	char *name;
+
+	int vchannels;
+	int norm;
+	int tuner_type;
+
+	/* i2c flags */
+	unsigned int tda9887_conf;
+
+	unsigned int has_tuner:1;
+	unsigned int has_msp34xx:1;
+
+	enum em2820_decoder decoder;
+
+	struct em2820_input       input[MAX_EM2820_INPUT];
+};
+
+struct em2820_eeprom {
+	u32 id;			/* 0x9567eb1a */
+	u16 vendor_ID;
+	u16 product_ID;
+
+	u16 chip_conf;
+
+	u16 board_conf;
+
+	u16 string1, string2, string3;
+
+	u8 string_idx_table;
+};
+
+/* device states */
+enum em2820_dev_state {
+	DEV_INITIALIZED = 0x01,
+	DEV_DISCONNECTED = 0x02,
+	DEV_MISCONFIGURED = 0x04,
+};
+
+/* tvnorms */
+struct em2820_tvnorm {
+	char *name;
+	v4l2_std_id id;
+	/* mode for saa7113h */
+	int mode;
+};
+
+/* main device struct */
+struct em2820 {
+	/* generic device properties */
+	char name[30];		/* name (including minor) of the device */
+	int model;		/* index in the device_data struct */
+	int video_inputs;	/* number of video inputs */
+	unsigned int has_tuner:1;
+	unsigned int has_msp34xx:1;
+	unsigned int has_tda9887:1;
+
+	enum em2820_decoder decoder;
+
+	int tuner_type;		/* type of the tuner */
+	int tuner_addr;		/* tuner address */
+	int tda9887_conf;
+	/* i2c i/o */
+	struct i2c_adapter i2c_adap;
+	struct i2c_client i2c_client;
+	/* video for linux */
+	int users;		/* user count for exclusive use */
+	struct video_device *vdev;	/* video for linux device struct */
+	struct video_picture vpic;	/* picture settings only used to init saa7113h */
+	struct em2820_tvnorm *tvnorm;	/* selected tv norm */
+	int ctl_freq;		/* selected frequency */
+	unsigned int ctl_input;	/* selected input */
+	unsigned int ctl_ainput;	/* slected audio input */
+	int mute;
+	int volume;
+	/* frame properties */
+	struct em2820_frame_t frame[EM2820_NUM_FRAMES];	/* list of frames */
+	int num_frames;		/* number of frames currently in use */
+	unsigned int frame_count;	/* total number of transfered frames */
+	struct em2820_frame_t *frame_current;	/* the frame that is being filled */
+	int width;		/* current frame width */
+	int height;		/* current frame height */
+	int frame_size;		/* current frame size */
+	int field_size;		/* current field size */
+	int bytesperline;
+	int hscale;		/* horizontal scale factor (see datasheet) */
+	int vscale;		/* vertical scale factor (see datasheet) */
+	int interlaced;		/* 1=interlace fileds, 0=just top fileds */
+	int type;
+
+	/* states */
+	enum em2820_dev_state state;
+	enum em2820_stream_state stream;
+	enum em2820_io_method io;
+	/* locks */
+	struct semaphore lock, fileop_lock;
+	spinlock_t queue_lock;
+	struct list_head inqueue, outqueue;
+	wait_queue_head_t open, wait_frame, wait_stream;
+	struct video_device *vbi_dev;
+
+	unsigned char eedata[256];
+
+	/* usb transfer */
+	struct usb_device *udev;	/* the usb device */
+	int alt;		/* alternate */
+	int max_pkt_size;	/* max packet size of isoc transaction */
+	unsigned int alt_max_pkt_size[EM2820_MAX_ALT + 1];	/* array of wMaxPacketSize */
+	struct urb *urb[EM2820_NUM_BUFS];	/* urb for isoc transfers */
+	char *transfer_buffer[EM2820_NUM_BUFS];	/* transfer buffers for isoc transfer */
+	/* helper funcs that call usb_control_msg */
+	int (*em2820_write_regs) (struct em2820 * dev, u16 reg, char *buf,
+				  int len);
+	int (*em2820_read_reg) (struct em2820 * dev, u16 reg);
+	int (*em2820_read_reg_req_len) (struct em2820 * dev, u8 req, u16 reg,
+					char *buf, int len);
+	int (*em2820_write_regs_req) (struct em2820 * dev, u8 req, u16 reg,
+				      char *buf, int len);
+	int (*em2820_read_reg_req) (struct em2820 * dev, u8 req, u16 reg);
+};
+
+/* Provided by em2820-i2c.c */
+
+void em2820_i2c_call_clients(struct em2820 *dev, unsigned int cmd, void *arg);
+int em2820_i2c_register(struct em2820 *dev);
+int em2820_i2c_unregister(struct em2820 *dev);
+
+/* Provided by em2820-core.c */
+
+void em2820_print_ioctl(char *name, unsigned int cmd);
+
+u32 em2820_request_buffers(struct em2820 *dev, u32 count);
+void em2820_queue_unusedframes(struct em2820 *dev);
+void em2820_release_buffers(struct em2820 *dev);
+
+int em2820_read_reg_req_len(struct em2820 *dev, u8 req, u16 reg,
+			    char *buf, int len);
+int em2820_read_reg_req(struct em2820 *dev, u8 req, u16 reg);
+int em2820_read_reg(struct em2820 *dev, u16 reg);
+int em2820_write_regs_req(struct em2820 *dev, u8 req, u16 reg, char *buf,
+			  int len);
+int em2820_write_regs(struct em2820 *dev, u16 reg, char *buf, int len);
+int em2820_write_reg_bits(struct em2820 *dev, u16 reg, u8 val,
+			  u8 bitmask);
+int em2820_write_ac97(struct em2820 *dev, u8 reg, u8 * val);
+int em2820_audio_analog_set(struct em2820 *dev);
+int em2820_colorlevels_set_default(struct em2820 *dev);
+int em2820_capture_start(struct em2820 *dev, int start);
+int em2820_outfmt_set_yuv422(struct em2820 *dev);
+int em2820_accumulator_set(struct em2820 *dev, u8 xmin, u8 xmax, u8 ymin,
+			   u8 ymax);
+int em2820_capture_area_set(struct em2820 *dev, u8 hstart, u8 vstart,
+			    u16 width, u16 height);
+int em2820_scaler_set(struct em2820 *dev, u16 h, u16 v);
+int em2820_resolution_set(struct em2820 *dev);
+void em2820_isocIrq(struct urb *urb, struct pt_regs *regs);
+int em2820_init_isoc(struct em2820 *dev);
+void em2820_uninit_isoc(struct em2820 *dev);
+int em2820_set_alternate(struct em2820 *dev);
+
+/* Provided by em2820-cards.c */
+extern void em2820_card_setup(struct em2820 *dev);
+extern struct em2820_board em2820_boards[];
+extern struct usb_device_id em2820_id_table[];
+
+/* em2820 registers */
+#define USBSUSP_REG	0x0c	/* */
+
+#define AUDIOSRC_REG	0x0e
+#define XCLK_REG	0x0f
+
+#define VINMODE_REG	0x10
+#define VINCTRL_REG	0x11
+#define VINENABLE_REG	0x12	/* */
+
+#define GAMMA_REG	0x14
+#define RGAIN_REG	0x15
+#define GGAIN_REG	0x16
+#define BGAIN_REG	0x17
+#define ROFFSET_REG	0x18
+#define GOFFSET_REG	0x19
+#define BOFFSET_REG	0x1a
+
+#define OFLOW_REG	0x1b
+#define HSTART_REG	0x1c
+#define VSTART_REG	0x1d
+#define CWIDTH_REG	0x1e
+#define CHEIGHT_REG	0x1f
+
+#define YGAIN_REG	0x20
+#define YOFFSET_REG	0x21
+#define UVGAIN_REG	0x22
+#define UOFFSET_REG	0x23
+#define VOFFSET_REG	0x24
+#define SHARPNESS_REG	0x25
+
+#define COMPR_REG	0x26
+#define OUTFMT_REG	0x27
+
+#define XMIN_REG	0x28
+#define XMAX_REG	0x29
+#define YMIN_REG	0x2a
+#define YMAX_REG	0x2b
+
+#define HSCALELOW_REG	0x30
+#define HSCALEHIGH_REG	0x31
+#define VSCALELOW_REG	0x32
+#define VSCALEHIGH_REG	0x33
+
+#define AC97LSB_REG	0x40
+#define AC97MSB_REG	0x41
+#define AC97ADDR_REG	0x42
+#define AC97BUSY_REG	0x43
+
+/* em202 registers */
+#define MASTER_AC97	0x02
+#define VIDEO_AC97	0x14
+
+/* register settings */
+#define EM2820_AUDIO_SRC_TUNER	0xc0
+#define EM2820_AUDIO_SRC_LINE	0x80
+
+/* printk macros */
+
+#define em2820_err(fmt, arg...) do {\
+        printk(KERN_ERR fmt , ##arg); } while (0)
+
+#define em2820_errdev(fmt, arg...) do {\
+        printk(KERN_ERR "%s: "fmt,\
+			dev->name , ##arg); } while (0)
+
+#define em2820_info(fmt, arg...) do {\
+        printk(KERN_INFO "%s: "fmt,\
+			dev->name , ##arg); } while (0)
+#define em2820_warn(fmt, arg...) do {\
+        printk(KERN_WARNING "%s: "fmt,\
+			dev->name , ##arg); } while (0)
+
+inline static int em2820_audio_source(struct em2820 *dev, int input)
+{
+	return em2820_write_reg_bits(dev, AUDIOSRC_REG, input, 0xc0);
+}
+
+inline static int em2820_audio_usb_mute(struct em2820 *dev, int mute)
+{
+	return em2820_write_reg_bits(dev, XCLK_REG, mute ? 0x00 : 0x80, 0x80);
+}
+
+inline static int em2820_audio_analog_setup(struct em2820 *dev)
+{
+	/* unmute video mixer with default volume level */
+	return em2820_write_ac97(dev, VIDEO_AC97, "\x08\x08");
+}
+
+inline static int em2820_compression_disable(struct em2820 *dev)
+{
+	/* side effect of disabling scaler and mixer */
+	return em2820_write_regs(dev, COMPR_REG, "\x00", 1);
+}
+
+inline static int em2820_contrast_get(struct em2820 *dev)
+{
+	return em2820_read_reg(dev, YGAIN_REG) & 0x1f;
+}
+
+inline static int em2820_brightness_get(struct em2820 *dev)
+{
+	return em2820_read_reg(dev, YOFFSET_REG);
+}
+
+inline static int em2820_saturation_get(struct em2820 *dev)
+{
+	return em2820_read_reg(dev, UVGAIN_REG) & 0x1f;
+}
+
+inline static int em2820_u_balance_get(struct em2820 *dev)
+{
+	return em2820_read_reg(dev, UOFFSET_REG);
+}
+
+inline static int em2820_v_balance_get(struct em2820 *dev)
+{
+	return em2820_read_reg(dev, VOFFSET_REG);
+}
+
+inline static int em2820_gamma_get(struct em2820 *dev)
+{
+	return em2820_read_reg(dev, GAMMA_REG) & 0x3f;
+}
+
+inline static int em2820_contrast_set(struct em2820 *dev, s32 val)
+{
+	u8 tmp = (u8) val;
+	return em2820_write_regs(dev, YGAIN_REG, &tmp, 1);
+}
+
+inline static int em2820_brightness_set(struct em2820 *dev, s32 val)
+{
+	u8 tmp = (u8) val;
+	return em2820_write_regs(dev, YOFFSET_REG, &tmp, 1);
+}
+
+inline static int em2820_saturation_set(struct em2820 *dev, s32 val)
+{
+	u8 tmp = (u8) val;
+	return em2820_write_regs(dev, UVGAIN_REG, &tmp, 1);
+}
+
+inline static int em2820_u_balance_set(struct em2820 *dev, s32 val)
+{
+	u8 tmp = (u8) val;
+	return em2820_write_regs(dev, UOFFSET_REG, &tmp, 1);
+}
+
+inline static int em2820_v_balance_set(struct em2820 *dev, s32 val)
+{
+	u8 tmp = (u8) val;
+	return em2820_write_regs(dev, VOFFSET_REG, &tmp, 1);
+}
+
+inline static int em2820_gamma_set(struct em2820 *dev, s32 val)
+{
+	u8 tmp = (u8) val;
+	return em2820_write_regs(dev, GAMMA_REG, &tmp, 1);
+}
+
+/*FIXME: maxw should be dependent of alt mode */
+#define norm_maxw(dev) 720
+inline static unsigned int norm_maxh(struct em2820 *dev)
+{
+	return (dev->tvnorm->id & V4L2_STD_625_50) ? 576 : 480;
+}
+
+#endif