From 01c2819330b1e0ec6b53dcfac76ad75ff2c8ba4f Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Sun, 22 Dec 2013 13:27:02 -0300 Subject: [PATCH] [media] em28xx: make em28xx-video to be a separate module MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Now that all analog-specific code are at em28xx-video, convert it into an em28xx extension and load it as a separate module. Reviewed-by: Frank Schäfer Tested-by: Frank Schäfer Signed-off-by: Mauro Carvalho Chehab --- drivers/media/usb/em28xx/Kconfig | 6 +- drivers/media/usb/em28xx/Makefile | 5 +- drivers/media/usb/em28xx/em28xx-camera.c | 1 + drivers/media/usb/em28xx/em28xx-cards.c | 32 +++-------- drivers/media/usb/em28xx/em28xx-core.c | 12 ++++ drivers/media/usb/em28xx/em28xx-v4l.h | 20 +++++++ drivers/media/usb/em28xx/em28xx-vbi.c | 1 + drivers/media/usb/em28xx/em28xx-video.c | 71 +++++++++++++++++------- drivers/media/usb/em28xx/em28xx.h | 23 +------- 9 files changed, 102 insertions(+), 69 deletions(-) create mode 100644 drivers/media/usb/em28xx/em28xx-v4l.h diff --git a/drivers/media/usb/em28xx/Kconfig b/drivers/media/usb/em28xx/Kconfig index d6ba514d31eb..a1fccf3096de 100644 --- a/drivers/media/usb/em28xx/Kconfig +++ b/drivers/media/usb/em28xx/Kconfig @@ -1,8 +1,12 @@ config VIDEO_EM28XX - tristate "Empia EM28xx USB video capture support" + tristate "Empia EM28xx USB devices support" depends on VIDEO_DEV && I2C select VIDEO_TUNER select VIDEO_TVEEPROM + +config VIDEO_EM28XX_V4L2 + tristate "Empia EM28xx analog TV, video capture and/or webcam support" + depends on VIDEO_EM28XX select VIDEOBUF2_VMALLOC select VIDEO_SAA711X if MEDIA_SUBDRV_AUTOSELECT select VIDEO_TVP5150 if MEDIA_SUBDRV_AUTOSELECT diff --git a/drivers/media/usb/em28xx/Makefile b/drivers/media/usb/em28xx/Makefile index ad6d48557940..3f850d5063d0 100644 --- a/drivers/media/usb/em28xx/Makefile +++ b/drivers/media/usb/em28xx/Makefile @@ -1,10 +1,11 @@ -em28xx-y += em28xx-video.o em28xx-i2c.o em28xx-cards.o -em28xx-y += em28xx-core.o em28xx-vbi.o em28xx-camera.o +em28xx-y += em28xx-core.o em28xx-i2c.o em28xx-cards.o em28xx-camera.o +em28xx-v4l-objs := em28xx-video.o em28xx-vbi.o em28xx-alsa-objs := em28xx-audio.o em28xx-rc-objs := em28xx-input.o obj-$(CONFIG_VIDEO_EM28XX) += em28xx.o +obj-$(CONFIG_VIDEO_EM28XX_V4L2) += em28xx-v4l.o obj-$(CONFIG_VIDEO_EM28XX_ALSA) += em28xx-alsa.o obj-$(CONFIG_VIDEO_EM28XX_DVB) += em28xx-dvb.o obj-$(CONFIG_VIDEO_EM28XX_RC) += em28xx-rc.o diff --git a/drivers/media/usb/em28xx/em28xx-camera.c b/drivers/media/usb/em28xx/em28xx-camera.c index d666741797d4..c29f5c4e7b40 100644 --- a/drivers/media/usb/em28xx/em28xx-camera.c +++ b/drivers/media/usb/em28xx/em28xx-camera.c @@ -454,3 +454,4 @@ int em28xx_init_camera(struct em28xx *dev) return ret; } +EXPORT_SYMBOL_GPL(em28xx_init_camera); diff --git a/drivers/media/usb/em28xx/em28xx-cards.c b/drivers/media/usb/em28xx/em28xx-cards.c index dbce4dc421f9..b25869331284 100644 --- a/drivers/media/usb/em28xx/em28xx-cards.c +++ b/drivers/media/usb/em28xx/em28xx-cards.c @@ -2159,6 +2159,8 @@ struct em28xx_board em28xx_boards[] = { .ir_codes = RC_MAP_PINNACLE_PCTV_HD, }, }; +EXPORT_SYMBOL_GPL(em28xx_boards); + const unsigned int em28xx_bcount = ARRAY_SIZE(em28xx_boards); /* table of devices that work with this driver */ @@ -2780,11 +2782,12 @@ static void request_module_async(struct work_struct *work) em28xx_init_extension(dev); #if defined(CONFIG_MODULES) && defined(MODULE) + if (dev->has_video) + request_module("em28xx-v4l"); if (dev->has_audio_class) request_module("snd-usb-audio"); else if (dev->has_alsa_audio) request_module("em28xx-alsa"); - if (dev->board.has_dvb) request_module("em28xx-dvb"); if (dev->board.buttons || @@ -2813,18 +2816,12 @@ void em28xx_release_resources(struct em28xx *dev) { /*FIXME: I2C IR should be disconnected */ - em28xx_release_analog_resources(dev); - if (dev->def_i2c_bus) em28xx_i2c_unregister(dev, 1); em28xx_i2c_unregister(dev, 0); if (dev->clk) v4l2_clk_unregister_fixed(dev->clk); - v4l2_ctrl_handler_free(&dev->ctrl_handler); - - v4l2_device_unregister(&dev->v4l2_dev); - usb_put_dev(dev->udev); /* Mark device as unused */ @@ -2999,18 +2996,7 @@ static int em28xx_init_dev(struct em28xx *dev, struct usb_device *udev, /* Do board specific init and eeprom reading */ em28xx_card_setup(dev); - retval = em28xx_register_analog_devices(dev); - if (retval < 0) - goto fail; - return 0; - -fail: - if (dev->def_i2c_bus) - em28xx_i2c_unregister(dev, 1); - em28xx_i2c_unregister(dev, 0); - - return retval; } /* high bandwidth multiplier, as encoded in highspeed endpoint descriptors */ @@ -3213,6 +3199,7 @@ static int em28xx_usb_probe(struct usb_interface *interface, dev->alt = -1; dev->is_audio_only = has_audio && !(has_video || has_dvb); dev->has_alsa_audio = has_audio; + dev->has_video = has_video; dev->audio_ifnum = ifnum; /* Checks if audio is provided by some interface */ @@ -3252,10 +3239,9 @@ static int em28xx_usb_probe(struct usb_interface *interface, /* allocate device struct */ mutex_init(&dev->lock); - mutex_lock(&dev->lock); retval = em28xx_init_dev(dev, udev, interface, nr); if (retval) { - goto unlock_and_free; + goto err_free; } if (usb_xfer_mode < 0) { @@ -3298,7 +3284,7 @@ static int em28xx_usb_probe(struct usb_interface *interface, if (retval) { printk(DRIVER_NAME ": Failed to pre-allocate USB transfer buffers for DVB.\n"); - goto unlock_and_free; + goto err_free; } } @@ -3307,13 +3293,9 @@ static int em28xx_usb_probe(struct usb_interface *interface, /* Should be the last thing to do, to avoid newer udev's to open the device before fully initializing it */ - mutex_unlock(&dev->lock); return 0; -unlock_and_free: - mutex_unlock(&dev->lock); - err_free: kfree(dev->alt_max_pkt_size_isoc); kfree(dev); diff --git a/drivers/media/usb/em28xx/em28xx-core.c b/drivers/media/usb/em28xx/em28xx-core.c index f77301773aee..c416dd33af3f 100644 --- a/drivers/media/usb/em28xx/em28xx-core.c +++ b/drivers/media/usb/em28xx/em28xx-core.c @@ -33,6 +33,18 @@ #include "em28xx.h" +#define DRIVER_AUTHOR "Ludovico Cavedon , " \ + "Markus Rechberger , " \ + "Mauro Carvalho Chehab , " \ + "Sascha Sommer " + +#define DRIVER_DESC "Empia em28xx based USB core driver" + +MODULE_AUTHOR(DRIVER_AUTHOR); +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_LICENSE("GPL"); +MODULE_VERSION(EM28XX_VERSION); + /* #define ENABLE_DEBUG_ISOC_FRAMES */ static unsigned int core_debug; diff --git a/drivers/media/usb/em28xx/em28xx-v4l.h b/drivers/media/usb/em28xx/em28xx-v4l.h new file mode 100644 index 000000000000..bce438691e0e --- /dev/null +++ b/drivers/media/usb/em28xx/em28xx-v4l.h @@ -0,0 +1,20 @@ +/* + em28xx-video.c - driver for Empia EM2800/EM2820/2840 USB + video capture devices + + Copyright (C) 2013-2014 Mauro Carvalho Chehab + + 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 version 2 of the License. + + 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. + */ + + +int em28xx_start_analog_streaming(struct vb2_queue *vq, unsigned int count); +int em28xx_stop_vbi_streaming(struct vb2_queue *vq); +extern struct vb2_ops em28xx_vbi_qops; diff --git a/drivers/media/usb/em28xx/em28xx-vbi.c b/drivers/media/usb/em28xx/em28xx-vbi.c index 39f39c527c13..db3d655600df 100644 --- a/drivers/media/usb/em28xx/em28xx-vbi.c +++ b/drivers/media/usb/em28xx/em28xx-vbi.c @@ -27,6 +27,7 @@ #include #include "em28xx.h" +#include "em28xx-v4l.h" static unsigned int vbibufs = 5; module_param(vbibufs, int, 0644); diff --git a/drivers/media/usb/em28xx/em28xx-video.c b/drivers/media/usb/em28xx/em28xx-video.c index 3726af134f39..7d11a16e72b5 100644 --- a/drivers/media/usb/em28xx/em28xx-video.c +++ b/drivers/media/usb/em28xx/em28xx-video.c @@ -38,6 +38,7 @@ #include #include "em28xx.h" +#include "em28xx-v4l.h" #include #include #include @@ -141,7 +142,7 @@ static struct em28xx_fmt format[] = { }, }; -int em28xx_vbi_supported(struct em28xx *dev) +static int em28xx_vbi_supported(struct em28xx *dev) { /* Modprobe option to manually disable */ if (disable_vbi == 1) @@ -164,7 +165,7 @@ int em28xx_vbi_supported(struct em28xx *dev) * em28xx_wake_i2c() * configure i2c attached devices */ -void em28xx_wake_i2c(struct em28xx *dev) +static void em28xx_wake_i2c(struct em28xx *dev) { v4l2_device_call_all(&dev->v4l2_dev, 0, core, reset, 0); v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_routing, @@ -172,7 +173,7 @@ void em28xx_wake_i2c(struct em28xx *dev) v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_stream, 0); } -int em28xx_colorlevels_set_default(struct em28xx *dev) +static int em28xx_colorlevels_set_default(struct em28xx *dev) { em28xx_write_reg(dev, EM28XX_R20_YGAIN, CONTRAST_DEFAULT); em28xx_write_reg(dev, EM28XX_R21_YOFFSET, BRIGHTNESS_DEFAULT); @@ -190,7 +191,7 @@ int em28xx_colorlevels_set_default(struct em28xx *dev) return em28xx_write_reg(dev, EM28XX_R1A_BOFFSET, 0x00); } -int em28xx_set_outfmt(struct em28xx *dev) +static int em28xx_set_outfmt(struct em28xx *dev) { int ret; u8 fmt, vinctrl; @@ -297,7 +298,7 @@ static int em28xx_scaler_set(struct em28xx *dev, u16 h, u16 v) } /* FIXME: this only function read values from dev */ -int em28xx_resolution_set(struct em28xx *dev) +static int em28xx_resolution_set(struct em28xx *dev) { int width, height; width = norm_maxw(dev); @@ -330,7 +331,7 @@ int em28xx_resolution_set(struct em28xx *dev) } /* Set USB alternate setting for analog video */ -int em28xx_set_alternate(struct em28xx *dev) +static int em28xx_set_alternate(struct em28xx *dev) { int errCode; int i; @@ -1020,7 +1021,7 @@ static struct vb2_ops em28xx_video_qops = { .wait_finish = vb2_ops_wait_finish, }; -int em28xx_vb2_setup(struct em28xx *dev) +static int em28xx_vb2_setup(struct em28xx *dev) { int rc; struct vb2_queue *q; @@ -1088,7 +1089,7 @@ static void video_mux(struct em28xx *dev, int index) em28xx_audio_analog_set(dev); } -void em28xx_ctrl_notify(struct v4l2_ctrl *ctrl, void *priv) +static void em28xx_ctrl_notify(struct v4l2_ctrl *ctrl, void *priv) { struct em28xx *dev = priv; @@ -1625,7 +1626,7 @@ static int vidioc_g_register(struct file *file, void *priv, reg->val = ret; } else { __le16 val = 0; - ret = em28xx_read_reg_req_len(dev, USB_REQ_GET_STATUS, + ret = dev->em28xx_read_reg_req_len(dev, USB_REQ_GET_STATUS, reg->reg, (char *)&val, 2); if (ret < 0) return ret; @@ -1872,14 +1873,16 @@ static int em28xx_v4l2_open(struct file *filp) } /* - * em28xx_realease_resources() + * em28xx_v4l2_fini() * unregisters the v4l2,i2c and usb devices * called when the device gets disconected or at module unload */ -void em28xx_release_analog_resources(struct em28xx *dev) +static int em28xx_v4l2_fini(struct em28xx *dev) { - - /*FIXME: I2C IR should be disconnected */ + if (!dev->has_video) { + /* This device does not support the v4l2 extension */ + return 0; + } if (dev->radio_dev) { if (video_is_registered(dev->radio_dev)) @@ -1906,6 +1909,8 @@ void em28xx_release_analog_resources(struct em28xx *dev) video_device_release(dev->vdev); dev->vdev = NULL; } + + return 0; } /* @@ -1927,12 +1932,13 @@ static int em28xx_v4l2_close(struct file *filp) if (dev->users == 1) { /* the device is already disconnect, free the remaining resources */ + if (dev->disconnected) { em28xx_release_resources(dev); + v4l2_ctrl_handler_free(&dev->ctrl_handler); + v4l2_device_unregister(&dev->v4l2_dev); kfree(dev->alt_max_pkt_size_isoc); - mutex_unlock(&dev->lock); - kfree(dev); - return 0; + goto exit; } /* Save some power by putting tuner to sleep */ @@ -1951,6 +1957,7 @@ static int em28xx_v4l2_close(struct file *filp) } } +exit: dev->users--; mutex_unlock(&dev->lock); return 0; @@ -2065,8 +2072,6 @@ static unsigned short msp3400_addrs[] = { /******************************** usb interface ******************************/ - - static struct video_device *em28xx_vdev_init(struct em28xx *dev, const struct video_device *template, const char *type_name) @@ -2140,7 +2145,7 @@ static void em28xx_setup_xc3028(struct em28xx *dev, struct xc2028_ctrl *ctl) } } -void em28xx_tuner_setup(struct em28xx *dev) +static void em28xx_tuner_setup(struct em28xx *dev) { struct tuner_setup tun_setup; struct v4l2_frequency f; @@ -2199,14 +2204,14 @@ void em28xx_tuner_setup(struct em28xx *dev) v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, &f); } -int em28xx_register_analog_devices(struct em28xx *dev) +static int em28xx_v4l2_init(struct em28xx *dev) { u8 val; int ret; unsigned int maxw; struct v4l2_ctrl_handler *hdl = &dev->ctrl_handler; - if (dev->is_audio_only) { + if (!dev->has_video) { /* This device does not support the v4l2 extension */ return 0; } @@ -2214,6 +2219,8 @@ int em28xx_register_analog_devices(struct em28xx *dev) printk(KERN_INFO "%s: v4l2 driver version %s\n", dev->name, EM28XX_VERSION); + mutex_lock(&dev->lock); + ret = v4l2_device_register(&dev->udev->dev, &dev->v4l2_dev); if (ret < 0) { em28xx_errdev("Call to v4l2_device_register() failed!\n"); @@ -2492,11 +2499,33 @@ int em28xx_register_analog_devices(struct em28xx *dev) /* initialize videobuf2 stuff */ em28xx_vb2_setup(dev); + mutex_unlock(&dev->lock); return 0; unregister_dev: v4l2_ctrl_handler_free(&dev->ctrl_handler); v4l2_device_unregister(&dev->v4l2_dev); err: + mutex_unlock(&dev->lock); return ret; } + +static struct em28xx_ops v4l2_ops = { + .id = EM28XX_V4L2, + .name = "Em28xx v4l2 Extension", + .init = em28xx_v4l2_init, + .fini = em28xx_v4l2_fini, +}; + +static int __init em28xx_video_register(void) +{ + return em28xx_register_extension(&v4l2_ops); +} + +static void __exit em28xx_video_unregister(void) +{ + em28xx_unregister_extension(&v4l2_ops); +} + +module_init(em28xx_video_register); +module_exit(em28xx_video_unregister); diff --git a/drivers/media/usb/em28xx/em28xx.h b/drivers/media/usb/em28xx/em28xx.h index 7ae05ebc13c1..9d6f43e4681f 100644 --- a/drivers/media/usb/em28xx/em28xx.h +++ b/drivers/media/usb/em28xx/em28xx.h @@ -26,7 +26,7 @@ #ifndef _EM28XX_H #define _EM28XX_H -#define EM28XX_VERSION "0.2.0" +#define EM28XX_VERSION "0.2.1" #include #include @@ -474,6 +474,7 @@ struct em28xx_eeprom { #define EM28XX_AUDIO 0x10 #define EM28XX_DVB 0x20 #define EM28XX_RC 0x30 +#define EM28XX_V4L2 0x40 /* em28xx resource types (used for res_get/res_lock etc */ #define EM28XX_RESOURCE_VIDEO 0x01 @@ -527,6 +528,7 @@ struct em28xx { unsigned int is_em25xx:1; /* em25xx/em276x/7x/8x family bridge */ unsigned char disconnected:1; /* device has been diconnected */ + unsigned int has_video:1; unsigned int has_audio_class:1; unsigned int has_alsa_audio:1; unsigned int is_audio_only:1; @@ -723,14 +725,9 @@ int em28xx_write_ac97(struct em28xx *dev, u8 reg, u16 val); int em28xx_audio_analog_set(struct em28xx *dev); int em28xx_audio_setup(struct em28xx *dev); -int em28xx_colorlevels_set_default(struct em28xx *dev); const struct em28xx_led *em28xx_find_led(struct em28xx *dev, enum em28xx_led_role role); int em28xx_capture_start(struct em28xx *dev, int start); -int em28xx_vbi_supported(struct em28xx *dev); -int em28xx_set_outfmt(struct em28xx *dev); -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_usb_xfer(struct em28xx *dev, enum em28xx_mode mode, @@ -742,31 +739,17 @@ void em28xx_uninit_usb_xfer(struct em28xx *dev, enum em28xx_mode mode); void em28xx_stop_urbs(struct em28xx *dev); int em28xx_set_mode(struct em28xx *dev, enum em28xx_mode set_mode); int em28xx_gpio_set(struct em28xx *dev, struct em28xx_reg_seq *gpio); -void em28xx_wake_i2c(struct em28xx *dev); int em28xx_register_extension(struct em28xx_ops *dev); void em28xx_unregister_extension(struct em28xx_ops *dev); void em28xx_init_extension(struct em28xx *dev); void em28xx_close_extension(struct em28xx *dev); -/* Provided by em28xx-video.c */ -void em28xx_tuner_setup(struct em28xx *dev); -int em28xx_vb2_setup(struct em28xx *dev); -int em28xx_register_analog_devices(struct em28xx *dev); -void em28xx_release_analog_resources(struct em28xx *dev); -void em28xx_ctrl_notify(struct v4l2_ctrl *ctrl, void *priv); -int em28xx_start_analog_streaming(struct vb2_queue *vq, unsigned int count); -int em28xx_stop_vbi_streaming(struct vb2_queue *vq); -extern const struct v4l2_ctrl_ops em28xx_ctrl_ops; - /* Provided by em28xx-cards.c */ extern struct em28xx_board em28xx_boards[]; extern struct usb_device_id em28xx_id_table[]; int em28xx_tuner_callback(void *ptr, int component, int command, int arg); void em28xx_release_resources(struct em28xx *dev); -/* Provided by em28xx-vbi.c */ -extern struct vb2_ops em28xx_vbi_qops; - /* Provided by em28xx-camera.c */ int em28xx_detect_sensor(struct em28xx *dev); int em28xx_init_camera(struct em28xx *dev); -- 2.39.5