From 057ca0da067c8c0c734088eba229ab06e21bc88c Mon Sep 17 00:00:00 2001 From: Frank Schaefer Date: Thu, 8 Nov 2012 14:11:42 -0300 Subject: [PATCH] [media] em28xx: create a common function for isoc and bulk USB transfer initialization MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit - rename em28xx_init_isoc to em28xx_init_usb_xfer - add parameter for isoc/bulk transfer selection which is passed to em28xx_alloc_urbs - rename local variable isoc_buf to usb_bufs Signed-off-by: Frank Schäfer Signed-off-by: Mauro Carvalho Chehab --- drivers/media/usb/em28xx/em28xx-core.c | 30 +++++++++++++------------ drivers/media/usb/em28xx/em28xx-dvb.c | 9 ++++---- drivers/media/usb/em28xx/em28xx-video.c | 20 ++++++++--------- drivers/media/usb/em28xx/em28xx.h | 8 ++++--- 4 files changed, 36 insertions(+), 31 deletions(-) diff --git a/drivers/media/usb/em28xx/em28xx-core.c b/drivers/media/usb/em28xx/em28xx-core.c index 42388dec5f32..d8a8e8bbb870 100644 --- a/drivers/media/usb/em28xx/em28xx-core.c +++ b/drivers/media/usb/em28xx/em28xx-core.c @@ -1141,33 +1141,35 @@ EXPORT_SYMBOL_GPL(em28xx_alloc_urbs); /* * Allocate URBs and start IRQ */ -int em28xx_init_isoc(struct em28xx *dev, enum em28xx_mode mode, - int num_packets, int num_bufs, int max_pkt_size, - int (*isoc_copy) (struct em28xx *dev, struct urb *urb)) +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)) { struct em28xx_dmaqueue *dma_q = &dev->vidq; struct em28xx_dmaqueue *vbi_dma_q = &dev->vbiq; - struct em28xx_usb_bufs *isoc_bufs; + struct em28xx_usb_bufs *usb_bufs; int i; int rc; int alloc; - em28xx_isocdbg("em28xx: called em28xx_init_isoc in mode %d\n", mode); + em28xx_isocdbg("em28xx: called em28xx_init_usb_xfer in mode %d\n", + mode); - dev->usb_ctl.urb_data_copy = isoc_copy; + dev->usb_ctl.urb_data_copy = urb_data_copy; if (mode == EM28XX_DIGITAL_MODE) { - isoc_bufs = &dev->usb_ctl.digital_bufs; - /* no need to free/alloc isoc buffers in digital mode */ + usb_bufs = &dev->usb_ctl.digital_bufs; + /* no need to free/alloc usb buffers in digital mode */ alloc = 0; } else { - isoc_bufs = &dev->usb_ctl.analog_bufs; + usb_bufs = &dev->usb_ctl.analog_bufs; alloc = 1; } if (alloc) { - rc = em28xx_alloc_urbs(dev, mode, 0, num_bufs, - max_pkt_size, num_packets); + rc = em28xx_alloc_urbs(dev, mode, xfer_bulk, num_bufs, + max_pkt_size, packet_multiplier); if (rc) return rc; } @@ -1178,8 +1180,8 @@ int em28xx_init_isoc(struct em28xx *dev, enum em28xx_mode mode, em28xx_capture_start(dev, 1); /* submit urbs and enables IRQ */ - for (i = 0; i < isoc_bufs->num_bufs; i++) { - rc = usb_submit_urb(isoc_bufs->urb[i], GFP_ATOMIC); + for (i = 0; i < usb_bufs->num_bufs; i++) { + rc = usb_submit_urb(usb_bufs->urb[i], GFP_ATOMIC); if (rc) { em28xx_err("submit of urb %i failed (error=%i)\n", i, rc); @@ -1190,7 +1192,7 @@ int em28xx_init_isoc(struct em28xx *dev, enum em28xx_mode mode, return 0; } -EXPORT_SYMBOL_GPL(em28xx_init_isoc); +EXPORT_SYMBOL_GPL(em28xx_init_usb_xfer); /* * em28xx_wake_i2c() diff --git a/drivers/media/usb/em28xx/em28xx-dvb.c b/drivers/media/usb/em28xx/em28xx-dvb.c index 581578f39133..fe4d11c67a4e 100644 --- a/drivers/media/usb/em28xx/em28xx-dvb.c +++ b/drivers/media/usb/em28xx/em28xx-dvb.c @@ -176,10 +176,11 @@ static int em28xx_start_streaming(struct em28xx_dvb *dvb) EM28XX_DVB_NUM_ISOC_PACKETS, max_dvb_packet_size); - return em28xx_init_isoc(dev, EM28XX_DIGITAL_MODE, - EM28XX_DVB_NUM_ISOC_PACKETS, - EM28XX_DVB_NUM_BUFS, - max_dvb_packet_size, em28xx_dvb_isoc_copy); + return em28xx_init_usb_xfer(dev, EM28XX_DIGITAL_MODE, 0, + EM28XX_DVB_NUM_BUFS, + max_dvb_packet_size, + EM28XX_DVB_NUM_ISOC_PACKETS, + em28xx_dvb_isoc_copy); } static int em28xx_stop_streaming(struct em28xx_dvb *dvb) diff --git a/drivers/media/usb/em28xx/em28xx-video.c b/drivers/media/usb/em28xx/em28xx-video.c index d61d4dcca626..a5c1a42f3923 100644 --- a/drivers/media/usb/em28xx/em28xx-video.c +++ b/drivers/media/usb/em28xx/em28xx-video.c @@ -763,17 +763,17 @@ buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb, if (urb_init) { if (em28xx_vbi_supported(dev) == 1) - rc = em28xx_init_isoc(dev, EM28XX_ANALOG_MODE, - EM28XX_NUM_ISOC_PACKETS, - EM28XX_NUM_BUFS, - dev->max_pkt_size, - em28xx_isoc_copy_vbi); + rc = em28xx_init_usb_xfer(dev, EM28XX_ANALOG_MODE, 0, + EM28XX_NUM_BUFS, + dev->max_pkt_size, + EM28XX_NUM_ISOC_PACKETS, + em28xx_isoc_copy_vbi); else - rc = em28xx_init_isoc(dev, EM28XX_ANALOG_MODE, - EM28XX_NUM_ISOC_PACKETS, - EM28XX_NUM_BUFS, - dev->max_pkt_size, - em28xx_isoc_copy); + rc = em28xx_init_usb_xfer(dev, EM28XX_ANALOG_MODE, 0, + EM28XX_NUM_BUFS, + dev->max_pkt_size, + EM28XX_NUM_ISOC_PACKETS, + em28xx_isoc_copy); if (rc < 0) goto fail; } diff --git a/drivers/media/usb/em28xx/em28xx.h b/drivers/media/usb/em28xx/em28xx.h index 7bc2ddd4dc0c..950a71786a14 100644 --- a/drivers/media/usb/em28xx/em28xx.h +++ b/drivers/media/usb/em28xx/em28xx.h @@ -664,9 +664,11 @@ int em28xx_resolution_set(struct em28xx *dev); int em28xx_set_alternate(struct em28xx *dev); 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_isoc(struct em28xx *dev, enum em28xx_mode mode, - int num_packets, int num_bufs, int max_pkt_size, - int (*isoc_copy) (struct em28xx *dev, struct urb *urb)); +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); -- 2.20.1