From 3aefb79af8d41c85e11da7109d62038849421bb6 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Thu, 17 Apr 2008 21:36:41 -0300 Subject: [PATCH] V4L/DVB (7593): em28xx: add a module to handle dvb This patch adds em28xx-dvb. This driver is highly based on cx88-dvb and saa7134-dvb. This code currently loads and unloads successfully. However, some changes are needed to properly support the mpeg streams and to setup em28xx to work on DVB mode. Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/em28xx/Kconfig | 8 ++ drivers/media/video/em28xx/Makefile | 1 + drivers/media/video/em28xx/em28xx-cards.c | 21 +-- drivers/media/video/em28xx/em28xx-dvb.c | 157 ++++++++++++++++++++++ drivers/media/video/em28xx/em28xx-video.c | 12 +- drivers/media/video/em28xx/em28xx.h | 43 ++++++ 6 files changed, 218 insertions(+), 24 deletions(-) create mode 100644 drivers/media/video/em28xx/em28xx-dvb.c diff --git a/drivers/media/video/em28xx/Kconfig b/drivers/media/video/em28xx/Kconfig index 0f7a0bd86ff..11a2759ecbc 100644 --- a/drivers/media/video/em28xx/Kconfig +++ b/drivers/media/video/em28xx/Kconfig @@ -27,3 +27,11 @@ config VIDEO_EM28XX_ALSA To compile this driver as a module, choose M here: the module will be called em28xx-alsa +config VIDEO_EM28XX_DVB + tristate "DVB/ATSC Support for em28xx based TV cards" + depends on VIDEO_EM28XX && DVB_CORE + select VIDEOBUF_DVB + select FW_LOADER + ---help--- + This adds support for DVB cards based on the + Empiatech em28xx chips. diff --git a/drivers/media/video/em28xx/Makefile b/drivers/media/video/em28xx/Makefile index 0924550992d..3d1c3cc337f 100644 --- a/drivers/media/video/em28xx/Makefile +++ b/drivers/media/video/em28xx/Makefile @@ -5,6 +5,7 @@ em28xx-alsa-objs := em28xx-audio.o obj-$(CONFIG_VIDEO_EM28XX) += em28xx.o obj-$(CONFIG_VIDEO_EM28XX_ALSA) += em28xx-alsa.o +obj-$(CONFIG_VIDEO_EM28XX_DVB) += em28xx-dvb.o EXTRA_CFLAGS += -Idrivers/media/video EXTRA_CFLAGS += -Idrivers/media/dvb/dvb-core diff --git a/drivers/media/video/em28xx/em28xx-cards.c b/drivers/media/video/em28xx/em28xx-cards.c index 94aed008f83..bbd75bd3ff1 100644 --- a/drivers/media/video/em28xx/em28xx-cards.c +++ b/drivers/media/video/em28xx/em28xx-cards.c @@ -52,26 +52,6 @@ struct em28xx_hash_table { unsigned int tuner; }; -/* Boards supported by driver */ - -#define EM2800_BOARD_UNKNOWN 0 -#define EM2820_BOARD_UNKNOWN 1 -#define EM2820_BOARD_TERRATEC_CINERGY_250 2 -#define EM2820_BOARD_PINNACLE_USB_2 3 -#define EM2820_BOARD_HAUPPAUGE_WINTV_USB_2 4 -#define EM2820_BOARD_MSI_VOX_USB_2 5 -#define EM2800_BOARD_TERRATEC_CINERGY_200 6 -#define EM2800_BOARD_LEADTEK_WINFAST_USBII 7 -#define EM2800_BOARD_KWORLD_USB2800 8 -#define EM2820_BOARD_PINNACLE_DVC_90 9 -#define EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900 10 -#define EM2880_BOARD_TERRATEC_HYBRID_XS 11 -#define EM2820_BOARD_KWORLD_PVRTV2800RF 12 -#define EM2880_BOARD_TERRATEC_PRODIGY_XS 13 -#define EM2820_BOARD_PROLINK_PLAYTV_USB2 14 -#define EM2800_BOARD_VGEAR_POCKETTV 15 -#define EM2880_BOARD_HAUPPAUGE_WINTV_HVR_950 16 - struct em28xx_board em28xx_boards[] = { [EM2800_BOARD_UNKNOWN] = { .name = "Unknown EM2800 video grabber", @@ -665,6 +645,7 @@ static void em28xx_set_model(struct em28xx *dev) dev->analog_gpio = em28xx_boards[dev->model].analog_gpio; dev->has_12mhz_i2s = em28xx_boards[dev->model].has_12mhz_i2s; dev->max_range_640_480 = em28xx_boards[dev->model].max_range_640_480; + dev->has_dvb = em28xx_boards[dev->model].has_dvb; } /* ----------------------------------------------------------------------- */ diff --git a/drivers/media/video/em28xx/em28xx-dvb.c b/drivers/media/video/em28xx/em28xx-dvb.c new file mode 100644 index 00000000000..1ffe64f6209 --- /dev/null +++ b/drivers/media/video/em28xx/em28xx-dvb.c @@ -0,0 +1,157 @@ +/* + DVB device driver for em28xx + + (c) 2008 Mauro Carvalho Chehab + + Based on cx88-dvb and saa7134-dvb originally written by: + (c) 2004, 2005 Chris Pascoe + (c) 2004 Gerd Knorr [SuSE Labs] + + 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. + */ + +#include +#include + +#include "em28xx.h" +#include +#include + +#include "lgdt330x.h" +#include "tuner-xc2028.h" +#include "tuner-xc2028-types.h" + +MODULE_DESCRIPTION("driver for em28xx based DVB cards"); +MODULE_AUTHOR("Mauro Carvalho Chehab "); +MODULE_LICENSE("GPL"); + +static unsigned int debug; +module_param(debug, int, 0644); +MODULE_PARM_DESC(debug, "enable debug messages [dvb]"); + +DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr); + +#define dprintk(level, fmt, arg...) do { \ +if (debug >= level) \ + printk(KERN_DEBUG "%s/2-dvb: " fmt, dev->name, ## arg) \ +} while (0) + +static int +buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size) +{ + struct em28xx_fh *fh = vq->priv_data; + struct em28xx *dev = fh->dev; + + *size = 16 * fh->dev->width * fh->dev->height >> 3; + if (0 == *count) + *count = EM28XX_DEF_BUF; + + if (*count < EM28XX_MIN_BUF) + *count = EM28XX_MIN_BUF; + + dev->mode = EM28XX_DIGITAL_MODE; + + return 0; +} + +/* ------------------------------------------------------------------ */ + +/* Add demods here */ + +/* ------------------------------------------------------------------ */ + +static int attach_xc3028(u8 addr, struct em28xx *dev) +{ + struct dvb_frontend *fe; + struct xc2028_ctrl ctl; + struct xc2028_config cfg = { + .i2c_adap = &dev->i2c_adap, + .i2c_addr = addr, + .ctrl = &ctl, + }; + + if (!dev->dvb.frontend) { + printk(KERN_ERR "%s/2: dvb frontend not attached. " + "Can't attach xc3028\n", + dev->name); + return -EINVAL; + } + + fe = dvb_attach(xc2028_attach, dev->dvb.frontend, &cfg); + if (!fe) { + printk(KERN_ERR "%s/2: xc3028 attach failed\n", + dev->name); + dvb_frontend_detach(dev->dvb.frontend); + dvb_unregister_frontend(dev->dvb.frontend); + dev->dvb.frontend = NULL; + return -EINVAL; + } + + printk(KERN_INFO "%s/2: xc3028 attached\n", dev->name); + + return 0; +} + +static int dvb_init(struct em28xx *dev) +{ + /* init struct videobuf_dvb */ + dev->dvb.name = dev->name; + + dev->qops->buf_setup = buffer_setup; + + videobuf_queue_vmalloc_init(&dev->dvb.dvbq, dev->qops, + &dev->udev->dev, &dev->slock, + V4L2_BUF_TYPE_VIDEO_CAPTURE, + V4L2_FIELD_ALTERNATE, + sizeof(struct em28xx_buffer), dev); + + /* init frontend */ + switch (dev->model) { + default: + printk(KERN_ERR "%s/2: The frontend of your DVB/ATSC card" + " isn't supported yet\n", + dev->name); + break; + } + if (NULL == dev->dvb.frontend) { + printk(KERN_ERR + "%s/2: frontend initialization failed\n", + dev->name); + return -EINVAL; + } + + /* register everything */ + return videobuf_dvb_register(&dev->dvb, THIS_MODULE, dev, + &dev->udev->dev, + adapter_nr); +} + +static int dvb_fini(struct em28xx *dev) +{ + if (dev->dvb.frontend) + videobuf_dvb_unregister(&dev->dvb); + + return 0; +} + +static struct em28xx_ops dvb_ops = { + .id = EM28XX_DVB, + .name = "Em28xx dvb Extension", + .init = dvb_init, + .fini = dvb_fini, +}; + +static int __init em28xx_dvb_register(void) +{ + return em28xx_register_extension(&dvb_ops); +} + +static void __exit em28xx_dvb_unregister(void) +{ + em28xx_unregister_extension(&dvb_ops); +} + +module_init(em28xx_dvb_register); +module_exit(em28xx_dvb_unregister); diff --git a/drivers/media/video/em28xx/em28xx-video.c b/drivers/media/video/em28xx/em28xx-video.c index 6084f8452b2..362251838d4 100644 --- a/drivers/media/video/em28xx/em28xx-video.c +++ b/drivers/media/video/em28xx/em28xx-video.c @@ -63,10 +63,6 @@ MODULE_PARM_DESC(isoc_debug, "enable debug messages [isoc transfers]"); printk(KERN_INFO "%s %s :"fmt, \ dev->name, __func__ , ##arg); } while (0) -/* Limits minimum and default number of buffers */ -#define EM28XX_MIN_BUF 4 -#define EM28XX_DEF_BUF 8 - MODULE_AUTHOR(DRIVER_AUTHOR); MODULE_DESCRIPTION(DRIVER_DESC); MODULE_LICENSE("GPL"); @@ -2237,6 +2233,9 @@ static void request_module_async(struct work_struct *work) request_module("snd-usb-audio"); else request_module("em28xx-alsa"); + + if (dev->has_dvb) + request_module("em28xx-dvb"); } static void request_modules(struct em28xx *dev) @@ -2368,6 +2367,11 @@ static int em28xx_usb_probe(struct usb_interface *interface, /* save our data pointer in this interface device */ usb_set_intfdata(interface, dev); +#if defined(CONFIG_VIDEO_EM28XX_DVB) || defined(CONFIG_VIDEO_EM28XX_DVB_MODULE) + dev->qops = kmalloc(sizeof(em28xx_video_qops), GFP_KERNEL); + memcpy(dev->qops, &em28xx_video_qops, sizeof(em28xx_video_qops)); +#endif + request_modules(dev); return 0; diff --git a/drivers/media/video/em28xx/em28xx.h b/drivers/media/video/em28xx/em28xx.h index 0080a09860d..96a56faeb77 100644 --- a/drivers/media/video/em28xx/em28xx.h +++ b/drivers/media/video/em28xx/em28xx.h @@ -31,6 +31,32 @@ #include #include #include +#if defined(CONFIG_VIDEO_EM28XX_DVB) || defined(CONFIG_VIDEO_EM28XX_DVB_MODULE) +#include +#endif + +/* Boards supported by driver */ +#define EM2800_BOARD_UNKNOWN 0 +#define EM2820_BOARD_UNKNOWN 1 +#define EM2820_BOARD_TERRATEC_CINERGY_250 2 +#define EM2820_BOARD_PINNACLE_USB_2 3 +#define EM2820_BOARD_HAUPPAUGE_WINTV_USB_2 4 +#define EM2820_BOARD_MSI_VOX_USB_2 5 +#define EM2800_BOARD_TERRATEC_CINERGY_200 6 +#define EM2800_BOARD_LEADTEK_WINFAST_USBII 7 +#define EM2800_BOARD_KWORLD_USB2800 8 +#define EM2820_BOARD_PINNACLE_DVC_90 9 +#define EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900 10 +#define EM2880_BOARD_TERRATEC_HYBRID_XS 11 +#define EM2820_BOARD_KWORLD_PVRTV2800RF 12 +#define EM2880_BOARD_TERRATEC_PRODIGY_XS 13 +#define EM2820_BOARD_PROLINK_PLAYTV_USB2 14 +#define EM2800_BOARD_VGEAR_POCKETTV 15 +#define EM2880_BOARD_HAUPPAUGE_WINTV_HVR_950 16 + +/* Limits minimum and default number of buffers */ +#define EM28XX_MIN_BUF 4 +#define EM28XX_DEF_BUF 8 /* maximum number of em28xx boards */ #define EM28XX_MAXBOARDS 4 /*FIXME: should be bigger */ @@ -81,6 +107,11 @@ /* time in msecs to wait for i2c writes to finish */ #define EM2800_I2C_WRITE_TIMEOUT 20 +enum em28xx_mode { + EM28XX_ANALOG_MODE, + EM28XX_DIGITAL_MODE, +}; + enum em28xx_stream_state { STREAM_OFF, STREAM_INTERRUPT, @@ -200,6 +231,7 @@ struct em28xx_board { unsigned int mts_firmware:1; unsigned int has_12mhz_i2s:1; unsigned int max_range_640_480:1; + unsigned int has_dvb:1; unsigned int analog_gpio; @@ -234,7 +266,10 @@ enum em28xx_dev_state { #define EM28XX_NUM_AUDIO_PACKETS 64 #define EM28XX_AUDIO_MAX_PACKET_SIZE 196 /* static value */ #define EM28XX_CAPTURE_STREAM_EN 1 + +/* em28xx extensions */ #define EM28XX_AUDIO 0x10 +#define EM28XX_DVB 0x20 struct em28xx_audio { char name[50]; @@ -266,6 +301,7 @@ struct em28xx { unsigned int has_audio_class:1; unsigned int has_12mhz_i2s:1; unsigned int max_range_640_480:1; + unsigned int has_dvb:1; int video_inputs; /* number of video inputs */ struct list_head devlist; @@ -340,6 +376,13 @@ struct em28xx { int (*em28xx_write_regs_req) (struct em28xx * dev, u8 req, u16 reg, char *buf, int len); int (*em28xx_read_reg_req) (struct em28xx * dev, u8 req, u16 reg); + + enum em28xx_mode mode; + +#if defined(CONFIG_VIDEO_EM28XX_DVB) || defined(CONFIG_VIDEO_EM28XX_DVB_MODULE) + struct videobuf_dvb dvb; + struct videobuf_queue_ops *qops; +#endif }; struct em28xx_fh { -- 2.41.1