From 3b27591d4e0b455865969d9f9bfae0d19fd6e5c3 Mon Sep 17 00:00:00 2001 From: Adam Baker Date: Tue, 3 Mar 2009 20:20:47 -0300 Subject: [PATCH] V4L/DVB (10829): Support alternate resolutions for sq905 Add support for the alternate resolutions offered by SQ-905 based cameras. As well as 320x240 all cameras can do 160x120 and some can do 640x480. Signed-off-by: Adam Baker Signed-off-by: Theodore Kilgore Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/gspca/sq905.c | 100 ++++++++++++++++++------------ 1 file changed, 59 insertions(+), 41 deletions(-) diff --git a/drivers/media/video/gspca/sq905.c b/drivers/media/video/gspca/sq905.c index dafaed69e9d..da60eea51e4 100644 --- a/drivers/media/video/gspca/sq905.c +++ b/drivers/media/video/gspca/sq905.c @@ -60,23 +60,29 @@ MODULE_LICENSE("GPL"); #define SQ905_PING 0x07 /* when reading an "idling" command */ #define SQ905_READ_DONE 0xc0 /* ack bulk read completed */ +/* Any non-zero value in the bottom 2 bits of the 2nd byte of + * the ID appears to indicate the camera can do 640*480. If the + * LSB of that byte is set the image is just upside down, otherwise + * it is rotated 180 degrees. */ +#define SQ905_HIRES_MASK 0x00000300 +#define SQ905_ORIENTATION_MASK 0x00000100 + /* Some command codes. These go in the "index" slot. */ #define SQ905_ID 0xf0 /* asks for model string */ #define SQ905_CONFIG 0x20 /* gets photo alloc. table, not used here */ #define SQ905_DATA 0x30 /* accesses photo data, not used here */ #define SQ905_CLEAR 0xa0 /* clear everything */ -#define SQ905_CAPTURE_LOW 0x60 /* Starts capture at 160x120 */ -#define SQ905_CAPTURE_MED 0x61 /* Starts capture at 320x240 */ +#define SQ905_CAPTURE_LOW 0x60 /* Starts capture at 160x120 */ +#define SQ905_CAPTURE_MED 0x61 /* Starts capture at 320x240 */ +#define SQ905_CAPTURE_HIGH 0x62 /* Starts capture at 640x480 (some cams only) */ /* note that the capture command also controls the output dimensions */ -/* 0x60 -> 160x120, 0x61 -> 320x240 0x62 -> 640x480 depends on camera */ -/* 0x62 is not correct, at least for some cams. Should be 0x63 ? */ /* Structure to hold all of our device specific stuff */ struct sd { struct gspca_dev gspca_dev; /* !! must be the first item */ - u8 cam_type; + const struct v4l2_pix_format *cap_mode; /* * Driver stuff @@ -85,33 +91,24 @@ struct sd { struct workqueue_struct *work_thread; }; -/* The driver only supports 320x240 so far. */ -static struct v4l2_pix_format sq905_mode[1] = { +static struct v4l2_pix_format sq905_mode[] = { + { 160, 120, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE, + .bytesperline = 160, + .sizeimage = 160 * 120, + .colorspace = V4L2_COLORSPACE_SRGB, + .priv = 0}, { 320, 240, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE, .bytesperline = 320, .sizeimage = 320 * 240, .colorspace = V4L2_COLORSPACE_SRGB, + .priv = 0}, + { 640, 480, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE, + .bytesperline = 640, + .sizeimage = 640 * 480, + .colorspace = V4L2_COLORSPACE_SRGB, .priv = 0} }; -struct cam_type { - u32 ident_word; - char *name; - struct v4l2_pix_format *min_mode; - u8 num_modes; - u8 sensor_flags; -}; - -#define SQ905_FLIP_HORIZ (1 << 0) -#define SQ905_FLIP_VERT (1 << 1) - -/* Last entry is default if nothing else matches */ -static struct cam_type cam_types[] = { - { 0x19010509, "PocketCam", &sq905_mode[0], 1, SQ905_FLIP_HORIZ }, - { 0x32010509, "Magpix", &sq905_mode[0], 1, SQ905_FLIP_HORIZ }, - { 0, "Default", &sq905_mode[0], 1, SQ905_FLIP_HORIZ | SQ905_FLIP_VERT } -}; - /* * Send a command to the camera. */ @@ -240,7 +237,7 @@ static void sq905_dostream(struct work_struct *work) /* request some data and then read it until we have * a complete frame. */ - bytes_left = sq905_mode[0].sizeimage + FRAME_HEADER_LEN; + bytes_left = dev->cap_mode->sizeimage + FRAME_HEADER_LEN; header_read = 0; discarding = 0; @@ -272,11 +269,18 @@ static void sq905_dostream(struct work_struct *work) packet_type = INTER_PACKET; } frame = gspca_get_i_frame(gspca_dev); - if (frame && !discarding) + if (frame && !discarding) { gspca_frame_add(gspca_dev, packet_type, frame, data, data_len); - else + /* If entire frame fits in one packet we still + need to add a LAST_PACKET */ + if ((packet_type == FIRST_PACKET) && + (bytes_left == 0)) + gspca_frame_add(gspca_dev, LAST_PACKET, + frame, data, 0); + } else { discarding = 1; + } } /* acknowledge the frame */ mutex_lock(&gspca_dev->usb_lock); @@ -301,8 +305,6 @@ static int sd_config(struct gspca_dev *gspca_dev, struct cam *cam = &gspca_dev->cam; struct sd *dev = (struct sd *) gspca_dev; - cam->cam_mode = sq905_mode; - cam->nmodes = 1; /* We don't use the buffer gspca allocates so make it small. */ cam->bulk_size = 64; @@ -328,7 +330,6 @@ static void sd_stop0(struct gspca_dev *gspca_dev) /* this function is called at probe and resume time */ static int sd_init(struct gspca_dev *gspca_dev) { - struct sd *dev = (struct sd *) gspca_dev; u32 ident; int ret; @@ -344,17 +345,18 @@ static int sd_init(struct gspca_dev *gspca_dev) ret = sq905_read_data(gspca_dev, gspca_dev->usb_buf, 4); if (ret < 0) return ret; - /* usb_buf is allocated with kmalloc so is aligned. */ - ident = le32_to_cpup((u32 *)gspca_dev->usb_buf); + /* usb_buf is allocated with kmalloc so is aligned. + * Camera model number is the right way round if we assume this + * reverse engineered ID is supposed to be big endian. */ + ident = be32_to_cpup((__be32 *)gspca_dev->usb_buf); ret = sq905_command(gspca_dev, SQ905_CLEAR); if (ret < 0) return ret; - dev->cam_type = 0; - while (dev->cam_type < ARRAY_SIZE(cam_types) - 1 && - ident != cam_types[dev->cam_type].ident_word) - dev->cam_type++; - PDEBUG(D_CONF, "SQ905 camera %s, ID %08x detected", - cam_types[dev->cam_type].name, ident); + PDEBUG(D_CONF, "SQ905 camera ID %08x detected", ident); + gspca_dev->cam.cam_mode = sq905_mode; + gspca_dev->cam.nmodes = ARRAY_SIZE(sq905_mode); + if (!(ident & SQ905_HIRES_MASK)) + gspca_dev->cam.nmodes--; return 0; } @@ -364,13 +366,29 @@ static int sd_start(struct gspca_dev *gspca_dev) struct sd *dev = (struct sd *) gspca_dev; int ret; + /* Set capture mode based on selected resolution. */ + dev->cap_mode = gspca_dev->cam.cam_mode; /* "Open the shutter" and set size, to start capture */ - ret = sq905_command(&dev->gspca_dev, SQ905_CAPTURE_MED); + switch (gspca_dev->width) { + case 640: + PDEBUG(D_STREAM, "Start streaming at high resolution"); + dev->cap_mode += 2; + ret = sq905_command(&dev->gspca_dev, SQ905_CAPTURE_HIGH); + break; + case 320: + PDEBUG(D_STREAM, "Start streaming at medium resolution"); + dev->cap_mode++; + ret = sq905_command(&dev->gspca_dev, SQ905_CAPTURE_MED); + break; + default: + PDEBUG(D_STREAM, "Start streaming at low resolution"); + ret = sq905_command(&dev->gspca_dev, SQ905_CAPTURE_LOW); + } + if (ret < 0) { PDEBUG(D_ERR, "Start streaming command failed"); return ret; } - /* Start the workqueue function to do the streaming */ dev->work_thread = create_singlethread_workqueue(MODULE_NAME); queue_work(dev->work_thread, &dev->work_struct); -- 2.41.1