Copyright (C) 2005 Markus Rechberger <mrechberger@gmail.com>
Ludovico Cavedon <cavedon@sssup.it>
Mauro Carvalho Chehab <mchehab@infradead.org>
+ Copyright (C) 2012 Frank Schäfer <fschaefer.oss@googlemail.com>
Based on the em2800 driver from Sascha Sommer <saschasommer@freenet.de>
#define EM2874_BOARD_MAXMEDIA_UB425_TC 84
#define EM2884_BOARD_PCTV_510E 85
#define EM2884_BOARD_PCTV_520E 86
+#define EM2884_BOARD_TERRATEC_HTC_USB_XS 87
/* Limits minimum and default number of buffers */
#define EM28XX_MIN_BUF 4
#define EM28XX_NUM_BUFS 5
#define EM28XX_DVB_NUM_BUFS 5
-/* number of packets for each buffer
+/* isoc transfers: number of packets for each buffer
windows requests only 64 packets .. so we better do the same
this is what I found out for all alternate numbers there!
*/
-#define EM28XX_NUM_PACKETS 64
-#define EM28XX_DVB_MAX_PACKETS 64
+#define EM28XX_NUM_ISOC_PACKETS 64
+#define EM28XX_DVB_NUM_ISOC_PACKETS 64
+
+/* bulk transfers: transfer buffer size = packet size * packet multiplier
+ USB 2.0 spec says bulk packet size is always 512 bytes
+ */
+#define EM28XX_BULK_PACKET_MULTIPLIER 384
+#define EM28XX_DVB_BULK_PACKET_MULTIPLIER 384
#define EM28XX_INTERLACED_DEFAULT 1
Interval: 125us
*/
-/* time to wait when stopping the isoc transfer */
-#define EM28XX_URB_TIMEOUT \
- msecs_to_jiffies(EM28XX_NUM_BUFS * EM28XX_NUM_PACKETS)
-
/* time in msecs to wait for i2c writes to finish */
#define EM2800_I2C_WRITE_TIMEOUT 20
struct em28xx;
-struct em28xx_usb_isoc_bufs {
+struct em28xx_usb_bufs {
/* max packet size of isoc transaction */
int max_pkt_size;
/* number of allocated urbs */
int num_bufs;
- /* urb for isoc transfers */
+ /* urb for isoc/bulk transfers */
struct urb **urb;
- /* transfer buffers for isoc transfer */
+ /* transfer buffers for isoc/bulk transfer */
char **transfer_buffer;
};
-struct em28xx_usb_isoc_ctl {
- /* isoc transfer buffers for analog mode */
- struct em28xx_usb_isoc_bufs analog_bufs;
+struct em28xx_usb_ctl {
+ /* isoc/bulk transfer buffers for analog mode */
+ struct em28xx_usb_bufs analog_bufs;
- /* isoc transfer buffers for digital mode */
- struct em28xx_usb_isoc_bufs digital_bufs;
+ /* isoc/bulk transfer buffers for digital mode */
+ struct em28xx_usb_bufs digital_bufs;
/* Stores already requested buffers */
struct em28xx_buffer *vid_buf;
struct em28xx_buffer *vbi_buf;
- /* isoc urb callback */
- int (*isoc_copy) (struct em28xx *dev, struct urb *urb);
+ /* copy data from URB */
+ int (*urb_data_copy) (struct em28xx *dev, struct urb *urb);
};
int sensor_xres, sensor_yres;
int sensor_xtal;
- /* Allows progressive (e. g. non-interlaced) mode */
+ /* Progressive (non-interlaced) mode */
int progressive;
/* Vinmode/Vinctl used at the driver */
/* Isoc control struct */
struct em28xx_dmaqueue vidq;
struct em28xx_dmaqueue vbiq;
- struct em28xx_usb_isoc_ctl isoc_ctl;
+ struct em28xx_usb_ctl usb_ctl;
spinlock_t slock;
/* usb transfer */
struct usb_device *udev; /* the usb device */
- int alt; /* alternate */
- int max_pkt_size; /* max packet size of isoc transaction */
- int num_alt; /* Number of alternative settings */
- unsigned int *alt_max_pkt_size; /* array of wMaxPacketSize */
- int dvb_alt; /* alternate for DVB */
- unsigned int dvb_max_pkt_size; /* wMaxPacketSize for DVB */
+ u8 analog_ep_isoc; /* address of isoc endpoint for analog */
+ u8 analog_ep_bulk; /* address of bulk endpoint for analog */
+ u8 dvb_ep_isoc; /* address of isoc endpoint for DVB */
+ u8 dvb_ep_bulk; /* address of bulk endpoint for DVC */
+ int alt; /* alternate setting */
+ int max_pkt_size; /* max packet size of the selected ep at alt */
+ int packet_multiplier; /* multiplier for wMaxPacketSize, used for
+ URB buffer size definition */
+ int num_alt; /* number of alternative settings */
+ unsigned int *alt_max_pkt_size_isoc; /* array of isoc wMaxPacketSize */
+ unsigned int analog_xfer_bulk:1; /* use bulk instead of isoc
+ transfers for analog */
+ int dvb_alt_isoc; /* alternate setting for DVB isoc transfers */
+ unsigned int dvb_max_pkt_size_isoc; /* isoc max packet size of the
+ selected DVB ep at dvb_alt */
+ unsigned int dvb_xfer_bulk:1; /* use bulk instead of isoc
+ transfers for DVB */
char urb_buf[URB_MAX_CTRL_SIZE]; /* urb control msg buffer */
/* helper funcs that call usb_control_msg */
int em28xx_set_outfmt(struct em28xx *dev);
int em28xx_resolution_set(struct em28xx *dev);
int em28xx_set_alternate(struct em28xx *dev);
-int em28xx_alloc_isoc(struct em28xx *dev, enum em28xx_mode mode,
- int max_packets, int num_bufs, int max_pkt_size);
-int em28xx_init_isoc(struct em28xx *dev, enum em28xx_mode mode,
- int max_packets, int num_bufs, int max_pkt_size,
- int (*isoc_copy) (struct em28xx *dev, struct urb *urb));
-void em28xx_uninit_isoc(struct em28xx *dev, enum em28xx_mode mode);
+int em28xx_alloc_urbs(struct em28xx *dev, enum em28xx_mode mode, int xfer_bulk,
+ int num_bufs, int max_pkt_size, int packet_multiplier);
+int em28xx_init_usb_xfer(struct em28xx *dev, enum em28xx_mode mode,
+ int xfer_bulk,
+ int num_bufs, int max_pkt_size, int packet_multiplier,
+ int (*urb_data_copy)
+ (struct em28xx *dev, struct urb *urb));
+void em28xx_uninit_usb_xfer(struct em28xx *dev, enum em28xx_mode mode);
void em28xx_stop_urbs(struct em28xx *dev);
int em28xx_isoc_dvb_max_packetsize(struct em28xx *dev);
int em28xx_set_mode(struct em28xx *dev, enum em28xx_mode set_mode);
projects / mirror_ubuntu-artful-kernel.git / blobdiff