diff options
Diffstat (limited to 'drivers/media/pci/bt8xx/bttv-driver.c')
| -rw-r--r-- | drivers/media/pci/bt8xx/bttv-driver.c | 4630 |
1 files changed, 4630 insertions, 0 deletions
diff --git a/drivers/media/pci/bt8xx/bttv-driver.c b/drivers/media/pci/bt8xx/bttv-driver.c new file mode 100644 index 000000000000..16f5ca23698c --- /dev/null +++ b/drivers/media/pci/bt8xx/bttv-driver.c @@ -0,0 +1,4630 @@ +/* + + bttv - Bt848 frame grabber driver + + Copyright (C) 1996,97,98 Ralph Metzler <rjkm@thp.uni-koeln.de> + & Marcus Metzler <mocm@thp.uni-koeln.de> + (c) 1999-2002 Gerd Knorr <kraxel@bytesex.org> + + some v4l2 code lines are taken from Justin's bttv2 driver which is + (c) 2000 Justin Schoeman <justin@suntiger.ee.up.ac.za> + + V4L1 removal from: + (c) 2005-2006 Nickolay V. Shmyrev <nshmyrev@yandex.ru> + + Fixes to be fully V4L2 compliant by + (c) 2006 Mauro Carvalho Chehab <mchehab@infradead.org> + + Cropping and overscan support + Copyright (C) 2005, 2006 Michael H. Schimek <mschimek@gmx.at> + Sponsored by OPQ Systems AB + + 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, or + (at your option) any later version. + + 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. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. +*/ + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#include <linux/init.h> +#include <linux/module.h> +#include <linux/delay.h> +#include <linux/slab.h> +#include <linux/errno.h> +#include <linux/fs.h> +#include <linux/kernel.h> +#include <linux/sched.h> +#include <linux/interrupt.h> +#include <linux/kdev_t.h> +#include "bttvp.h" +#include <media/v4l2-common.h> +#include <media/v4l2-ioctl.h> +#include <media/tvaudio.h> +#include <media/msp3400.h> + +#include <linux/dma-mapping.h> + +#include <asm/io.h> +#include <asm/byteorder.h> + +#include <media/saa6588.h> + +#define BTTV_VERSION "0.9.19" + +unsigned int bttv_num; /* number of Bt848s in use */ +struct bttv *bttvs[BTTV_MAX]; + +unsigned int bttv_debug; +unsigned int bttv_verbose = 1; +unsigned int bttv_gpio; + +/* config variables */ +#ifdef __BIG_ENDIAN +static unsigned int bigendian=1; +#else +static unsigned int bigendian; +#endif +static unsigned int radio[BTTV_MAX]; +static unsigned int irq_debug; +static unsigned int gbuffers = 8; +static unsigned int gbufsize = 0x208000; +static unsigned int reset_crop = 1; + +static int video_nr[BTTV_MAX] = { [0 ... (BTTV_MAX-1)] = -1 }; +static int radio_nr[BTTV_MAX] = { [0 ... (BTTV_MAX-1)] = -1 }; +static int vbi_nr[BTTV_MAX] = { [0 ... (BTTV_MAX-1)] = -1 }; +static int debug_latency; +static int disable_ir; + +static unsigned int fdsr; + +/* options */ +static unsigned int combfilter; +static unsigned int lumafilter; +static unsigned int automute = 1; +static unsigned int chroma_agc; +static unsigned int adc_crush = 1; +static unsigned int whitecrush_upper = 0xCF; +static unsigned int whitecrush_lower = 0x7F; +static unsigned int vcr_hack; +static unsigned int irq_iswitch; +static unsigned int uv_ratio = 50; +static unsigned int full_luma_range; +static unsigned int coring; + +/* API features (turn on/off stuff for testing) */ +static unsigned int v4l2 = 1; + +/* insmod args */ +module_param(bttv_verbose, int, 0644); +module_param(bttv_gpio, int, 0644); +module_param(bttv_debug, int, 0644); +module_param(irq_debug, int, 0644); +module_param(debug_latency, int, 0644); +module_param(disable_ir, int, 0444); + +module_param(fdsr, int, 0444); +module_param(gbuffers, int, 0444); +module_param(gbufsize, int, 0444); +module_param(reset_crop, int, 0444); + +module_param(v4l2, int, 0644); +module_param(bigendian, int, 0644); +module_param(irq_iswitch, int, 0644); +module_param(combfilter, int, 0444); +module_param(lumafilter, int, 0444); +module_param(automute, int, 0444); +module_param(chroma_agc, int, 0444); +module_param(adc_crush, int, 0444); +module_param(whitecrush_upper, int, 0444); +module_param(whitecrush_lower, int, 0444); +module_param(vcr_hack, int, 0444); +module_param(uv_ratio, int, 0444); +module_param(full_luma_range, int, 0444); +module_param(coring, int, 0444); + +module_param_array(radio, int, NULL, 0444); +module_param_array(video_nr, int, NULL, 0444); +module_param_array(radio_nr, int, NULL, 0444); +module_param_array(vbi_nr, int, NULL, 0444); + +MODULE_PARM_DESC(radio,"The TV card supports radio, default is 0 (no)"); +MODULE_PARM_DESC(bigendian,"byte order of the framebuffer, default is native endian"); +MODULE_PARM_DESC(bttv_verbose,"verbose startup messages, default is 1 (yes)"); +MODULE_PARM_DESC(bttv_gpio,"log gpio changes, default is 0 (no)"); +MODULE_PARM_DESC(bttv_debug,"debug messages, default is 0 (no)"); +MODULE_PARM_DESC(irq_debug,"irq handler debug messages, default is 0 (no)"); +MODULE_PARM_DESC(disable_ir, "disable infrared remote support"); +MODULE_PARM_DESC(gbuffers,"number of capture buffers. range 2-32, default 8"); +MODULE_PARM_DESC(gbufsize,"size of the capture buffers, default is 0x208000"); +MODULE_PARM_DESC(reset_crop,"reset cropping parameters at open(), default " + "is 1 (yes) for compatibility with older applications"); +MODULE_PARM_DESC(automute,"mute audio on bad/missing video signal, default is 1 (yes)"); +MODULE_PARM_DESC(chroma_agc,"enables the AGC of chroma signal, default is 0 (no)"); +MODULE_PARM_DESC(adc_crush,"enables the luminance ADC crush, default is 1 (yes)"); +MODULE_PARM_DESC(whitecrush_upper,"sets the white crush upper value, default is 207"); +MODULE_PARM_DESC(whitecrush_lower,"sets the white crush lower value, default is 127"); +MODULE_PARM_DESC(vcr_hack,"enables the VCR hack (improves synch on poor VCR tapes), default is 0 (no)"); +MODULE_PARM_DESC(irq_iswitch,"switch inputs in irq handler"); +MODULE_PARM_DESC(uv_ratio,"ratio between u and v gains, default is 50"); +MODULE_PARM_DESC(full_luma_range,"use the full luma range, default is 0 (no)"); +MODULE_PARM_DESC(coring,"set the luma coring level, default is 0 (no)"); +MODULE_PARM_DESC(video_nr, "video device numbers"); +MODULE_PARM_DESC(vbi_nr, "vbi device numbers"); +MODULE_PARM_DESC(radio_nr, "radio device numbers"); + +MODULE_DESCRIPTION("bttv - v4l/v4l2 driver module for bt848/878 based cards"); +MODULE_AUTHOR("Ralph Metzler & Marcus Metzler & Gerd Knorr"); +MODULE_LICENSE("GPL"); +MODULE_VERSION(BTTV_VERSION); + +/* ----------------------------------------------------------------------- */ +/* sysfs */ + +static ssize_t show_card(struct device *cd, + struct device_attribute *attr, char *buf) +{ + struct video_device *vfd = container_of(cd, struct video_device, dev); + struct bttv *btv = video_get_drvdata(vfd); + return sprintf(buf, "%d\n", btv ? btv->c.type : UNSET); +} +static DEVICE_ATTR(card, S_IRUGO, show_card, NULL); + +/* ----------------------------------------------------------------------- */ +/* dvb auto-load setup */ +#if defined(CONFIG_MODULES) && defined(MODULE) +static void request_module_async(struct work_struct *work) +{ + request_module("dvb-bt8xx"); +} + +static void request_modules(struct bttv *dev) +{ + INIT_WORK(&dev->request_module_wk, request_module_async); + schedule_work(&dev->request_module_wk); +} + +static void flush_request_modules(struct bttv *dev) +{ + flush_work_sync(&dev->request_module_wk); +} +#else +#define request_modules(dev) +#define flush_request_modules(dev) +#endif /* CONFIG_MODULES */ + + +/* ----------------------------------------------------------------------- */ +/* static data */ + +/* special timing tables from conexant... */ +static u8 SRAM_Table[][60] = +{ + /* PAL digital input over GPIO[7:0] */ + { + 45, // 45 bytes following + 0x36,0x11,0x01,0x00,0x90,0x02,0x05,0x10,0x04,0x16, + 0x12,0x05,0x11,0x00,0x04,0x12,0xC0,0x00,0x31,0x00, + 0x06,0x51,0x08,0x03,0x89,0x08,0x07,0xC0,0x44,0x00, + 0x81,0x01,0x01,0xA9,0x0D,0x02,0x02,0x50,0x03,0x37, + 0x37,0x00,0xAF,0x21,0x00 + }, + /* NTSC digital input over GPIO[7:0] */ + { + 51, // 51 bytes following + 0x0C,0xC0,0x00,0x00,0x90,0x02,0x03,0x10,0x03,0x06, + 0x10,0x04,0x12,0x12,0x05,0x02,0x13,0x04,0x19,0x00, + 0x04,0x39,0x00,0x06,0x59,0x08,0x03,0x83,0x08,0x07, + 0x03,0x50,0x00,0xC0,0x40,0x00,0x86,0x01,0x01,0xA6, + 0x0D,0x02,0x03,0x11,0x01,0x05,0x37,0x00,0xAC,0x21, + 0x00, + }, + // TGB_NTSC392 // quartzsight + // This table has been modified to be used for Fusion Rev D + { + 0x2A, // size of table = 42 + 0x06, 0x08, 0x04, 0x0a, 0xc0, 0x00, 0x18, 0x08, 0x03, 0x24, + 0x08, 0x07, 0x02, 0x90, 0x02, 0x08, 0x10, 0x04, 0x0c, 0x10, + 0x05, 0x2c, 0x11, 0x04, 0x55, 0x48, 0x00, 0x05, 0x50, 0x00, + 0xbf, 0x0c, 0x02, 0x2f, 0x3d, 0x00, 0x2f, 0x3f, 0x00, 0xc3, + 0x20, 0x00 + } +}; + +/* minhdelayx1 first video pixel we can capture on a line and + hdelayx1 start of active video, both relative to rising edge of + /HRESET pulse (0H) in 1 / fCLKx1. + swidth width of active video and + totalwidth total line width, both in 1 / fCLKx1. + sqwidth total line width in square pixels. + vdelay start of active video in 2 * field lines relative to + trailing edge of /VRESET pulse (VDELAY register). + sheight height of active video in 2 * field lines. + videostart0 ITU-R frame line number of the line corresponding + to vdelay in the first field. */ +#define CROPCAP(minhdelayx1, hdelayx1, swidth, totalwidth, sqwidth, \ + vdelay, sheight, videostart0) \ + .cropcap.bounds.left = minhdelayx1, \ + /* * 2 because vertically we count field lines times two, */ \ + /* e.g. 23 * 2 to 23 * 2 + 576 in PAL-BGHI defrect. */ \ + .cropcap.bounds.top = (videostart0) * 2 - (vdelay) + MIN_VDELAY, \ + /* 4 is a safety margin at the end of the line. */ \ + .cropcap.bounds.width = (totalwidth) - (minhdelayx1) - 4, \ + .cropcap.bounds.height = (sheight) + (vdelay) - MIN_VDELAY, \ + .cropcap.defrect.left = hdelayx1, \ + .cropcap.defrect.top = (videostart0) * 2, \ + .cropcap.defrect.width = swidth, \ + .cropcap.defrect.height = sheight, \ + .cropcap.pixelaspect.numerator = totalwidth, \ + .cropcap.pixelaspect.denominator = sqwidth, + +const struct bttv_tvnorm bttv_tvnorms[] = { + /* PAL-BDGHI */ + /* max. active video is actually 922, but 924 is divisible by 4 and 3! */ + /* actually, max active PAL with HSCALE=0 is 948, NTSC is 768 - nil */ + { + .v4l2_id = V4L2_STD_PAL, + .name = "PAL", + .Fsc = 35468950, + .swidth = 924, + .sheight = 576, + .totalwidth = 1135, + .adelay = 0x7f, + .bdelay = 0x72, + .iform = (BT848_IFORM_PAL_BDGHI|BT848_IFORM_XT1), + .scaledtwidth = 1135, + .hdelayx1 = 186, + .hactivex1 = 924, + .vdelay = 0x20, + .vbipack = 255, /* min (2048 / 4, 0x1ff) & 0xff */ + .sram = 0, + /* ITU-R frame line number of the first VBI line + we can capture, of the first and second field. + The last line is determined by cropcap.bounds. */ + .vbistart = { 7, 320 }, + CROPCAP(/* minhdelayx1 */ 68, + /* hdelayx1 */ 186, + /* Should be (768 * 1135 + 944 / 2) / 944. + cropcap.defrect is used for image width + checks, so we keep the old value 924. */ + /* swidth */ 924, + /* totalwidth */ 1135, + /* sqwidth */ 944, + /* vdelay */ 0x20, + /* sheight */ 576, + /* videostart0 */ 23) + /* bt878 (and bt848?) can capture another + line below active video. */ + .cropcap.bounds.height = (576 + 2) + 0x20 - 2, + },{ + .v4l2_id = V4L2_STD_NTSC_M | V4L2_STD_NTSC_M_KR, + .name = "NTSC", + .Fsc = 28636363, + .swidth = 768, + .sheight = 480, + .totalwidth = 910, + .adelay = 0x68, + .bdelay = 0x5d, + .iform = (BT848_IFORM_NTSC|BT848_IFORM_XT0), + .scaledtwidth = 910, + .hdelayx1 = 128, + .hactivex1 = 910, + .vdelay = 0x1a, + .vbipack = 144, /* min (1600 / 4, 0x1ff) & 0xff */ + .sram = 1, + .vbistart = { 10, 273 }, + CROPCAP(/* minhdelayx1 */ 68, + /* hdelayx1 */ 128, + /* Should be (640 * 910 + 780 / 2) / 780? */ + /* swidth */ 768, + /* totalwidth */ 910, + /* sqwidth */ 780, + /* vdelay */ 0x1a, + /* sheight */ 480, + /* videostart0 */ 23) + },{ + .v4l2_id = V4L2_STD_SECAM, + .name = "SECAM", + .Fsc = 35468950, + .swidth = 924, + .sheight = 576, + .totalwidth = 1135, + .adelay = 0x7f, + .bdelay = 0xb0, + .iform = (BT848_IFORM_SECAM|BT848_IFORM_XT1), + .scaledtwidth = 1135, + .hdelayx1 = 186, + .hactivex1 = 922, + .vdelay = 0x20, + .vbipack = 255, + .sram = 0, /* like PAL, correct? */ + .vbistart = { 7, 320 }, + CROPCAP(/* minhdelayx1 */ 68, + /* hdelayx1 */ 186, + /* swidth */ 924, + /* totalwidth */ 1135, + /* sqwidth */ 944, + /* vdelay */ 0x20, + /* sheight */ 576, + /* videostart0 */ 23) + },{ + .v4l2_id = V4L2_STD_PAL_Nc, + .name = "PAL-Nc", + .Fsc = 28636363, + .swidth = 640, + .sheight = 576, + .totalwidth = 910, + .adelay = 0x68, + .bdelay = 0x5d, + .iform = (BT848_IFORM_PAL_NC|BT848_IFORM_XT0), + .scaledtwidth = 780, + .hdelayx1 = 130, + .hactivex1 = 734, + .vdelay = 0x1a, + .vbipack = 144, + .sram = -1, + .vbistart = { 7, 320 }, + CROPCAP(/* minhdelayx1 */ 68, + /* hdelayx1 */ 130, + /* swidth */ (640 * 910 + 780 / 2) / 780, + /* totalwidth */ 910, + /* sqwidth */ 780, + /* vdelay */ 0x1a, + /* sheight */ 576, + /* videostart0 */ 23) + },{ + .v4l2_id = V4L2_STD_PAL_M, + .name = "PAL-M", + .Fsc = 28636363, + .swidth = 640, + .sheight = 480, + .totalwidth = 910, + .adelay = 0x68, + .bdelay = 0x5d, + .iform = (BT848_IFORM_PAL_M|BT848_IFORM_XT0), + .scaledtwidth = 780, + .hdelayx1 = 135, + .hactivex1 = 754, + .vdelay = 0x1a, + .vbipack = 144, + .sram = -1, + .vbistart = { 10, 273 }, + CROPCAP(/* minhdelayx1 */ 68, + /* hdelayx1 */ 135, + /* swidth */ (640 * 910 + 780 / 2) / 780, + /* totalwidth */ 910, + /* sqwidth */ 780, + /* vdelay */ 0x1a, + /* sheight */ 480, + /* videostart0 */ 23) + },{ + .v4l2_id = V4L2_STD_PAL_N, + .name = "PAL-N", + .Fsc = 35468950, + .swidth = 768, + .sheight = 576, + .totalwidth = 1135, + .adelay = 0x7f, + .bdelay = 0x72, + .iform = (BT848_IFORM_PAL_N|BT848_IFORM_XT1), + .scaledtwidth = 944, + .hdelayx1 = 186, + .hactivex1 = 922, + .vdelay = 0x20, + .vbipack = 144, + .sram = -1, + .vbistart = { 7, 320 }, + CROPCAP(/* minhdelayx1 */ 68, + /* hdelayx1 */ 186, + /* swidth */ (768 * 1135 + 944 / 2) / 944, + /* totalwidth */ 1135, + /* sqwidth */ 944, + /* vdelay */ 0x20, + /* sheight */ 576, + /* videostart0 */ 23) + },{ + .v4l2_id = V4L2_STD_NTSC_M_JP, + .name = "NTSC-JP", + .Fsc = 28636363, + .swidth = 640, + .sheight = 480, + .totalwidth = 910, + .adelay = 0x68, + .bdelay = 0x5d, + .iform = (BT848_IFORM_NTSC_J|BT848_IFORM_XT0), + .scaledtwidth = 780, + .hdelayx1 = 135, + .hactivex1 = 754, + .vdelay = 0x16, + .vbipack = 144, + .sram = -1, + .vbistart = { 10, 273 }, + CROPCAP(/* minhdelayx1 */ 68, + /* hdelayx1 */ 135, + /* swidth */ (640 * 910 + 780 / 2) / 780, + /* totalwidth */ 910, + /* sqwidth */ 780, + /* vdelay */ 0x16, + /* sheight */ 480, + /* videostart0 */ 23) + },{ + /* that one hopefully works with the strange timing + * which video recorders produce when playing a NTSC + * tape on a PAL TV ... */ + .v4l2_id = V4L2_STD_PAL_60, + .name = "PAL-60", + .Fsc = 35468950, + .swidth = 924, + .sheight = 480, + .totalwidth = 1135, + .adelay = 0x7f, + .bdelay = 0x72, + .iform = (BT848_IFORM_PAL_BDGHI|BT848_IFORM_XT1), + .scaledtwidth = 1135, + .hdelayx1 = 186, + .hactivex1 = 924, + .vdelay = 0x1a, + .vbipack = 255, + .vtotal = 524, + .sram = -1, + .vbistart = { 10, 273 }, + CROPCAP(/* minhdelayx1 */ 68, + /* hdelayx1 */ 186, + /* swidth */ 924, + /* totalwidth */ 1135, + /* sqwidth */ 944, + /* vdelay */ 0x1a, + /* sheight */ 480, + /* videostart0 */ 23) + } +}; +static const unsigned int BTTV_TVNORMS = ARRAY_SIZE(bttv_tvnorms); + +/* ----------------------------------------------------------------------- */ +/* bttv format list + packed pixel formats must come first */ +static const struct bttv_format formats[] = { + { + .name = "8 bpp, gray", + .fourcc = V4L2_PIX_FMT_GREY, + .btformat = BT848_COLOR_FMT_Y8, + .depth = 8, + .flags = FORMAT_FLAGS_PACKED, + },{ + .name = "8 bpp, dithered color", + .fourcc = V4L2_PIX_FMT_HI240, + .btformat = BT848_COLOR_FMT_RGB8, + .depth = 8, + .flags = FORMAT_FLAGS_PACKED | FORMAT_FLAGS_DITHER, + },{ + .name = "15 bpp RGB, le", + .fourcc = V4L2_PIX_FMT_RGB555, + .btformat = BT848_COLOR_FMT_RGB15, + .depth = 16, + .flags = FORMAT_FLAGS_PACKED, + },{ + .name = "15 bpp RGB, be", + .fourcc = V4L2_PIX_FMT_RGB555X, + .btformat = BT848_COLOR_FMT_RGB15, + .btswap = 0x03, /* byteswap */ + .depth = 16, + .flags = FORMAT_FLAGS_PACKED, + },{ + .name = "16 bpp RGB, le", + .fourcc = V4L2_PIX_FMT_RGB565, + .btformat = BT848_COLOR_FMT_RGB16, + .depth = 16, + .flags = FORMAT_FLAGS_PACKED, + },{ + .name = "16 bpp RGB, be", + .fourcc = V4L2_PIX_FMT_RGB565X, + .btformat = BT848_COLOR_FMT_RGB16, + .btswap = 0x03, /* byteswap */ + .depth = 16, + .flags = FORMAT_FLAGS_PACKED, + },{ + .name = "24 bpp RGB, le", + .fourcc = V4L2_PIX_FMT_BGR24, + .btformat = BT848_COLOR_FMT_RGB24, + .depth = 24, + .flags = FORMAT_FLAGS_PACKED, + },{ + .name = "32 bpp RGB, le", + .fourcc = V4L2_PIX_FMT_BGR32, + .btformat = BT848_COLOR_FMT_RGB32, + .depth = 32, + .flags = FORMAT_FLAGS_PACKED, + },{ + .name = "32 bpp RGB, be", + .fourcc = V4L2_PIX_FMT_RGB32, + .btformat = BT848_COLOR_FMT_RGB32, + .btswap = 0x0f, /* byte+word swap */ + .depth = 32, + .flags = FORMAT_FLAGS_PACKED, + },{ + .name = "4:2:2, packed, YUYV", + .fourcc = V4L2_PIX_FMT_YUYV, + .btformat = BT848_COLOR_FMT_YUY2, + .depth = 16, + .flags = FORMAT_FLAGS_PACKED, + },{ + .name = "4:2:2, packed, UYVY", + .fourcc = V4L2_PIX_FMT_UYVY, + .btformat = BT848_COLOR_FMT_YUY2, + .btswap = 0x03, /* byteswap */ + .depth = 16, + .flags = FORMAT_FLAGS_PACKED, + },{ + .name = "4:2:2, planar, Y-Cb-Cr", + .fourcc = V4L2_PIX_FMT_YUV422P, + .btformat = BT848_COLOR_FMT_YCrCb422, + .depth = 16, + .flags = FORMAT_FLAGS_PLANAR, + .hshift = 1, + .vshift = 0, + },{ + .name = "4:2:0, planar, Y-Cb-Cr", + .fourcc = V4L2_PIX_FMT_YUV420, + .btformat = BT848_COLOR_FMT_YCrCb422, + .depth = 12, + .flags = FORMAT_FLAGS_PLANAR, + .hshift = 1, + .vshift = 1, + },{ + .name = "4:2:0, planar, Y-Cr-Cb", + .fourcc = V4L2_PIX_FMT_YVU420, + .btformat = BT848_COLOR_FMT_YCrCb422, + .depth = 12, + .flags = FORMAT_FLAGS_PLANAR | FORMAT_FLAGS_CrCb, + .hshift = 1, + .vshift = 1, + },{ + .name = "4:1:1, planar, Y-Cb-Cr", + .fourcc = V4L2_PIX_FMT_YUV411P, + .btformat = BT848_COLOR_FMT_YCrCb411, + .depth = 12, + .flags = FORMAT_FLAGS_PLANAR, + .hshift = 2, + .vshift = 0, + },{ + .name = "4:1:0, planar, Y-Cb-Cr", + .fourcc = V4L2_PIX_FMT_YUV410, + .btformat = BT848_COLOR_FMT_YCrCb411, + .depth = 9, + .flags = FORMAT_FLAGS_PLANAR, + .hshift = 2, + .vshift = 2, + },{ + .name = "4:1:0, planar, Y-Cr-Cb", + .fourcc = V4L2_PIX_FMT_YVU410, + .btformat = BT848_COLOR_FMT_YCrCb411, + .depth = 9, + .flags = FORMAT_FLAGS_PLANAR | FORMAT_FLAGS_CrCb, + .hshift = 2, + .vshift = 2, + },{ + .name = "raw scanlines", + .fourcc = -1, + .btformat = BT848_COLOR_FMT_RAW, + .depth = 8, + .flags = FORMAT_FLAGS_RAW, + } +}; +static const unsigned int FORMATS = ARRAY_SIZE(formats); + +/* ----------------------------------------------------------------------- */ + +#define V4L2_CID_PRIVATE_CHROMA_AGC (V4L2_CID_PRIVATE_BASE + 0) +#define V4L2_CID_PRIVATE_COMBFILTER (V4L2_CID_PRIVATE_BASE + 1) +#define V4L2_CID_PRIVATE_AUTOMUTE (V4L2_CID_PRIVATE_BASE + 2) +#define V4L2_CID_PRIVATE_LUMAFILTER (V4L2_CID_PRIVATE_BASE + 3) +#define V4L2_CID_PRIVATE_AGC_CRUSH (V4L2_CID_PRIVATE_BASE + 4) +#define V4L2_CID_PRIVATE_VCR_HACK (V4L2_CID_PRIVATE_BASE + 5) +#define V4L2_CID_PRIVATE_WHITECRUSH_UPPER (V4L2_CID_PRIVATE_BASE + 6) +#define V4L2_CID_PRIVATE_WHITECRUSH_LOWER (V4L2_CID_PRIVATE_BASE + 7) +#define V4L2_CID_PRIVATE_UV_RATIO (V4L2_CID_PRIVATE_BASE + 8) +#define V4L2_CID_PRIVATE_FULL_LUMA_RANGE (V4L2_CID_PRIVATE_BASE + 9) +#define V4L2_CID_PRIVATE_CORING (V4L2_CID_PRIVATE_BASE + 10) +#define V4L2_CID_PRIVATE_LASTP1 (V4L2_CID_PRIVATE_BASE + 11) + +static const struct v4l2_queryctrl no_ctl = { + .name = "42", + .flags = V4L2_CTRL_FLAG_DISABLED, +}; +static const struct v4l2_queryctrl bttv_ctls[] = { + /* --- video --- */ + { + .id = V4L2_CID_BRIGHTNESS, + .name = "Brightness", + .minimum = 0, + .maximum = 65535, + .step = 256, + .default_value = 32768, + .type = V4L2_CTRL_TYPE_INTEGER, + },{ + .id = V4L2_CID_CONTRAST, + .name = "Contrast", + .minimum = 0, + .maximum = 65535, + .step = 128, + .default_value = 27648, + .type = V4L2_CTRL_TYPE_INTEGER, + },{ + .id = V4L2_CID_SATURATION, + .name = "Saturation", + .minimum = 0, + .maximum = 65535, + .step = 128, + .default_value = 32768, + .type = V4L2_CTRL_TYPE_INTEGER, + },{ + .id = V4L2_CID_HUE, + .name = "Hue", + .minimum = 0, + .maximum = 65535, + .step = 256, + .default_value = 32768, + .type = V4L2_CTRL_TYPE_INTEGER, + }, + /* --- audio --- */ + { + .id = V4L2_CID_AUDIO_MUTE, + .name = "Mute", + .minimum = 0, + .maximum = 1, + .type = V4L2_CTRL_TYPE_BOOLEAN, + },{ + .id = V4L2_CID_AUDIO_VOLUME, + .name = "Volume", + .minimum = 0, + .maximum = 65535, + .step = 65535/100, + .default_value = 65535, + .type = V4L2_CTRL_TYPE_INTEGER, + },{ + .id = V4L2_CID_AUDIO_BALANCE, + .name = "Balance", + .minimum = 0, + .maximum = 65535, + .step = 65535/100, + .default_value = 32768, + .type = V4L2_CTRL_TYPE_INTEGER, + },{ + .id = V4L2_CID_AUDIO_BASS, + .name = "Bass", + .minimum = 0, + .maximum = 65535, + .step = 65535/100, + .default_value = 32768, + .type = V4L2_CTRL_TYPE_INTEGER, + },{ + .id = V4L2_CID_AUDIO_TREBLE, + .name = "Treble", + .minimum = 0, + .maximum = 65535, + .step = 65535/100, + .default_value = 32768, + .type = V4L2_CTRL_TYPE_INTEGER, + }, + /* --- private --- */ + { + .id = V4L2_CID_PRIVATE_CHROMA_AGC, + .name = "chroma agc", + .minimum = 0, + .maximum = 1, + .type = V4L2_CTRL_TYPE_BOOLEAN, + },{ + .id = V4L2_CID_PRIVATE_COMBFILTER, + .name = "combfilter", + .minimum = 0, + .maximum = 1, + .type = V4L2_CTRL_TYPE_BOOLEAN, + },{ + .id = V4L2_CID_PRIVATE_AUTOMUTE, + .name = "automute", + .minimum = 0, + .maximum = 1, + .type = V4L2_CTRL_TYPE_BOOLEAN, + },{ + .id = V4L2_CID_PRIVATE_LUMAFILTER, + .name = "luma decimation filter", + .minimum = 0, + .maximum = 1, + .type = V4L2_CTRL_TYPE_BOOLEAN, + },{ + .id = V4L2_CID_PRIVATE_AGC_CRUSH, + .name = "agc crush", + .minimum = 0, + .maximum = 1, + .type = V4L2_CTRL_TYPE_BOOLEAN, + },{ + .id = V4L2_CID_PRIVATE_VCR_HACK, + .name = "vcr hack", + .minimum = 0, + .maximum = 1, + .type = V4L2_CTRL_TYPE_BOOLEAN, + },{ + .id = V4L2_CID_PRIVATE_WHITECRUSH_UPPER, + .name = "whitecrush upper", + .minimum = 0, + .maximum = 255, + .step = 1, + .default_value = 0xCF, + .type = V4L2_CTRL_TYPE_INTEGER, + },{ + .id = V4L2_CID_PRIVATE_WHITECRUSH_LOWER, + .name = "whitecrush lower", + .minimum = 0, + .maximum = 255, + .step = 1, + .default_value = 0x7F, + .type = V4L2_CTRL_TYPE_INTEGER, + },{ + .id = V4L2_CID_PRIVATE_UV_RATIO, + .name = "uv ratio", + .minimum = 0, + .maximum = 100, + .step = 1, + .default_value = 50, + .type = V4L2_CTRL_TYPE_INTEGER, + },{ + .id = V4L2_CID_PRIVATE_FULL_LUMA_RANGE, + .name = "full luma range", + .minimum = 0, + .maximum = 1, + .type = V4L2_CTRL_TYPE_BOOLEAN, + },{ + .id = V4L2_CID_PRIVATE_CORING, + .name = "coring", + .minimum = 0, + .maximum = 3, + .step = 1, + .default_value = 0, + .type = V4L2_CTRL_TYPE_INTEGER, + } + + + +}; + +static const struct v4l2_queryctrl *ctrl_by_id(int id) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(bttv_ctls); i++) + if (bttv_ctls[i].id == id) + return bttv_ctls+i; + + return NULL; +} + +/* ----------------------------------------------------------------------- */ +/* resource management */ + +/* + RESOURCE_ allocated by freed by + + VIDEO_READ bttv_read 1) bttv_read 2) + + VIDEO_STREAM VIDIOC_STREAMON VIDIOC_STREAMOFF + VIDIOC_QBUF 1) bttv_release + VIDIOCMCAPTURE 1) + + OVERLAY VIDIOCCAPTURE on VIDIOCCAPTURE off + VIDIOC_OVERLAY on VIDIOC_OVERLAY off + 3) bttv_release + + VBI VIDIOC_STREAMON VIDIOC_STREAMOFF + VIDIOC_QBUF 1) bttv_release + bttv_read, bttv_poll 1) 4) + + 1) The resource must be allocated when we enter buffer prepare functions + and remain allocated while buffers are in the DMA queue. + 2) This is a single frame read. + 3) VIDIOC_S_FBUF and VIDIOC_S_FMT (OVERLAY) still work when + RESOURCE_OVERLAY is allocated. + 4) This is a continuous read, implies VIDIOC_STREAMON. + + Note this driver permits video input and standard changes regardless if + resources are allocated. +*/ + +#define VBI_RESOURCES (RESOURCE_VBI) +#define VIDEO_RESOURCES (RESOURCE_VIDEO_READ | \ + RESOURCE_VIDEO_STREAM | \ + RESOURCE_OVERLAY) + +static +int check_alloc_btres_lock(struct bttv *btv, struct bttv_fh *fh, int bit) +{ + int xbits; /* mutual exclusive resources */ + + if (fh->resources & bit) + /* have it already allocated */ + return 1; + + xbits = bit; + if (bit & (RESOURCE_VIDEO_READ | RESOURCE_VIDEO_STREAM)) + xbits |= RESOURCE_VIDEO_READ | RESOURCE_VIDEO_STREAM; + + /* is it free? */ + if (btv->resources & xbits) { + /* no, someone else uses it */ + goto fail; + } + + if ((bit & VIDEO_RESOURCES) + && 0 == (btv->resources & VIDEO_RESOURCES)) { + /* Do crop - use current, don't - use default parameters. */ + __s32 top = btv->crop[!!fh->do_crop].rect.top; + + if (btv->vbi_end > top) + goto fail; + + /* We cannot capture the same line as video and VBI data. + Claim scan lines crop[].rect.top to bottom. */ + btv->crop_start = top; + } else if (bit & VBI_RESOURCES) { + __s32 end = fh->vbi_fmt.end; + + if (end > btv->crop_start) + goto fail; + + /* Claim scan lines above fh->vbi_fmt.end. */ + btv->vbi_end = end; + } + + /* it's free, grab it */ + fh->resources |= bit; + btv->resources |= bit; + return 1; + + fail: + return 0; +} + +static +int check_btres(struct bttv_fh *fh, int bit) +{ + return (fh->resources & bit); +} + +static +int locked_btres(struct bttv *btv, int bit) +{ + return (btv->resources & bit); +} + +/* Call with btv->lock down. */ +static void +disclaim_vbi_lines(struct bttv *btv) +{ + btv->vbi_end = 0; +} + +/* Call with btv->lock down. */ +static void +disclaim_video_lines(struct bttv *btv) +{ + const struct bttv_tvnorm *tvnorm; + u8 crop; + + tvnorm = &bttv_tvnorms[btv->tvnorm]; + btv->crop_start = tvnorm->cropcap.bounds.top + + tvnorm->cropcap.bounds.height; + + /* VBI capturing ends at VDELAY, start of video capturing, no + matter how many lines the VBI RISC program expects. When video + capturing is off, it shall no longer "preempt" VBI capturing, + so we set VDELAY to maximum. */ + crop = btread(BT848_E_CROP) | 0xc0; + btwrite(crop, BT848_E_CROP); + btwrite(0xfe, BT848_E_VDELAY_LO); + btwrite(crop, BT848_O_CROP); + btwrite(0xfe, BT848_O_VDELAY_LO); +} + +static +void free_btres_lock(struct bttv *btv, struct bttv_fh *fh, int bits) +{ + if ((fh->resources & bits) != bits) { + /* trying to free resources not allocated by us ... */ + pr_err("BUG! (btres)\n"); + } + fh->resources &= ~bits; + btv->resources &= ~bits; + + bits = btv->resources; + + if (0 == (bits & VIDEO_RESOURCES)) + disclaim_video_lines(btv); + + if (0 == (bits & VBI_RESOURCES)) + disclaim_vbi_lines(btv); +} + +/* ----------------------------------------------------------------------- */ +/* If Bt848a or Bt849, use PLL for PAL/SECAM and crystal for NTSC */ + +/* Frequency = (F_input / PLL_X) * PLL_I.PLL_F/PLL_C + PLL_X = Reference pre-divider (0=1, 1=2) + PLL_C = Post divider (0=6, 1=4) + PLL_I = Integer input + PLL_F = Fractional input + + F_input = 28.636363 MHz: + PAL (CLKx2 = 35.46895 MHz): PLL_X = 1, PLL_I = 0x0E, PLL_F = 0xDCF9, PLL_C = 0 +*/ + +static void set_pll_freq(struct bttv *btv, unsigned int fin, unsigned int fout) +{ + unsigned char fl, fh, fi; + + /* prevent overflows */ + fin/=4; + fout/=4; + + fout*=12; + fi=fout/fin; + + fout=(fout%fin)*256; + fh=fout/fin; + + fout=(fout%fin)*256; + fl=fout/fin; + + btwrite(fl, BT848_PLL_F_LO); + btwrite(fh, BT848_PLL_F_HI); + btwrite(fi|BT848_PLL_X, BT848_PLL_XCI); +} + +static void set_pll(struct bttv *btv) +{ + int i; + + if (!btv->pll.pll_crystal) + return; + + if (btv->pll.pll_ofreq == btv->pll.pll_current) { + dprintk("%d: PLL: no change required\n", btv->c.nr); + return; + } + + if (btv->pll.pll_ifreq == btv->pll.pll_ofreq) { + /* no PLL needed */ + if (btv->pll.pll_current == 0) + return; + if (bttv_verbose) + pr_info("%d: PLL can sleep, using XTAL (%d)\n", + btv->c.nr, btv->pll.pll_ifreq); + btwrite(0x00,BT848_TGCTRL); + btwrite(0x00,BT848_PLL_XCI); + btv->pll.pll_current = 0; + return; + } + + if (bttv_verbose) + pr_info("%d: Setting PLL: %d => %d (needs up to 100ms)\n", + btv->c.nr, + btv->pll.pll_ifreq, btv->pll.pll_ofreq); + set_pll_freq(btv, btv->pll.pll_ifreq, btv->pll.pll_ofreq); + + for (i=0; i<10; i++) { + /* Let other people run while the PLL stabilizes */ + msleep(10); + + if (btread(BT848_DSTATUS) & BT848_DSTATUS_PLOCK) { + btwrite(0,BT848_DSTATUS); + } else { + btwrite(0x08,BT848_TGCTRL); + btv->pll.pll_current = btv->pll.pll_ofreq; + if (bttv_verbose) + pr_info("PLL set ok\n"); + return; + } + } + btv->pll.pll_current = -1; + if (bttv_verbose) + pr_info("Setting PLL failed\n"); + return; +} + +/* used to switch between the bt848's analog/digital video capture modes */ +static void bt848A_set_timing(struct bttv *btv) +{ + int i, len; + int table_idx = bttv_tvnorms[btv->tvnorm].sram; + int fsc = bttv_tvnorms[btv->tvnorm].Fsc; + + if (btv->input == btv->dig) { + dprintk("%d: load digital timing table (table_idx=%d)\n", + btv->c.nr,table_idx); + + /* timing change...reset timing generator address */ + btwrite(0x00, BT848_TGCTRL); + btwrite(0x02, BT848_TGCTRL); + btwrite(0x00, BT848_TGCTRL); + + len=SRAM_Table[table_idx][0]; + for(i = 1; i <= len; i++) + btwrite(SRAM_Table[table_idx][i],BT848_TGLB); + btv->pll.pll_ofreq = 27000000; + + set_pll(btv); + btwrite(0x11, BT848_TGCTRL); + btwrite(0x41, BT848_DVSIF); + } else { + btv->pll.pll_ofreq = fsc; + set_pll(btv); + btwrite(0x0, BT848_DVSIF); + } +} + +/* ----------------------------------------------------------------------- */ + +static void bt848_bright(struct bttv *btv, int bright) +{ + int value; + + // printk("set bright: %d\n", bright); // DEBUG + btv->bright = bright; + + /* We want -128 to 127 we get 0-65535 */ + value = (bright >> 8) - 128; + btwrite(value & 0xff, BT848_BRIGHT); +} + +static void bt848_hue(struct bttv *btv, int hue) +{ + int value; + + btv->hue = hue; + + /* -128 to 127 */ + value = (hue >> 8) - 128; + btwrite(value & 0xff, BT848_HUE); +} + +static void bt848_contrast(struct bttv *btv, int cont) +{ + int value,hibit; + + btv->contrast = cont; + + /* 0-511 */ + value = (cont >> 7); + hibit = (value >> 6) & 4; + btwrite(value & 0xff, BT848_CONTRAST_LO); + btaor(hibit, ~4, BT848_E_CONTROL); + btaor(hibit, ~4, BT848_O_CONTROL); +} + +static void bt848_sat(struct bttv *btv, int color) +{ + int val_u,val_v,hibits; + + btv->saturation = color; + + /* 0-511 for the color */ + val_u = ((color * btv->opt_uv_ratio) / 50) >> 7; + val_v = (((color * (100 - btv->opt_uv_ratio) / 50) >>7)*180L)/254; + hibits = (val_u >> 7) & 2; + hibits |= (val_v >> 8) & 1; + btwrite(val_u & 0xff, BT848_SAT_U_LO); + btwrite(val_v & 0xff, BT848_SAT_V_LO); + btaor(hibits, ~3, BT848_E_CONTROL); + btaor(hibits, ~3, BT848_O_CONTROL); +} + +/* ----------------------------------------------------------------------- */ + +static int +video_mux(struct bttv *btv, unsigned int input) +{ + int mux,mask2; + + if (input >= bttv_tvcards[btv->c.type].video_inputs) + return -EINVAL; + + /* needed by RemoteVideo MX */ + mask2 = bttv_tvcards[btv->c.type].gpiomask2; + if (mask2) + gpio_inout(mask2,mask2); + + if (input == btv->svhs) { + btor(BT848_CONTROL_COMP, BT848_E_CONTROL); + btor(BT848_CONTROL_COMP, BT848_O_CONTROL); + } else { + btand(~BT848_CONTROL_COMP, BT848_E_CONTROL); + btand(~BT848_CONTROL_COMP, BT848_O_CONTROL); + } + mux = bttv_muxsel(btv, input); + btaor(mux<<5, ~(3<<5), BT848_IFORM); + dprintk("%d: video mux: input=%d mux=%d\n", btv->c.nr, input, mux); + + /* card specific hook */ + if(bttv_tvcards[btv->c.type].muxsel_hook) + bttv_tvcards[btv->c.type].muxsel_hook (btv, input); + return 0; +} + +static char *audio_modes[] = { + "audio: tuner", "audio: radio", "audio: extern", + "audio: intern", "audio: mute" +}; + +static int +audio_mux(struct bttv *btv, int input, int mute) +{ + int gpio_val, signal; + struct v4l2_control ctrl; + + gpio_inout(bttv_tvcards[btv->c.type].gpiomask, + bttv_tvcards[btv->c.type].gpiomask); + signal = btread(BT848_DSTATUS) & BT848_DSTATUS_HLOC; + + btv->mute = mute; + btv->audio = input; + + /* automute */ + mute = mute || (btv->opt_automute && !signal && !btv->radio_user); + + if (mute) + gpio_val = bttv_tvcards[btv->c.type].gpiomute; + else + gpio_val = bttv_tvcards[btv->c.type].gpiomux[input]; + + switch (btv->c.type) { + case BTTV_BOARD_VOODOOTV_FM: + case BTTV_BOARD_VOODOOTV_200: + gpio_val = bttv_tda9880_setnorm(btv, gpio_val); + break; + + default: + gpio_bits(bttv_tvcards[btv->c.type].gpiomask, gpio_val); + } + + if (bttv_gpio) + bttv_gpio_tracking(btv, audio_modes[mute ? 4 : input]); + if (in_interrupt()) + return 0; + + ctrl.id = V4L2_CID_AUDIO_MUTE; + ctrl.value = btv->mute; + bttv_call_all(btv, core, s_ctrl, &ctrl); + if (btv->sd_msp34xx) { + u32 in; + + /* Note: the inputs tuner/radio/extern/intern are translated + to msp routings. This assumes common behavior for all msp3400 + based TV cards. When this assumption fails, then the + specific MSP routing must be added to the card table. + For now this is sufficient. */ + switch (input) { + case TVAUDIO_INPUT_RADIO: + /* Some boards need the msp do to the radio demod */ + if (btv->radio_uses_msp_demodulator) { + in = MSP_INPUT_DEFAULT; + break; + } + in = MSP_INPUT(MSP_IN_SCART2, MSP_IN_TUNER1, + MSP_DSP_IN_SCART, MSP_DSP_IN_SCART); + break; + case TVAUDIO_INPUT_EXTERN: + in = MSP_INPUT(MSP_IN_SCART1, MSP_IN_TUNER1, + MSP_DSP_IN_SCART, MSP_DSP_IN_SCART); + break; + case TVAUDIO_INPUT_INTERN: + /* Yes, this is the same input as for RADIO. I doubt + if this is ever used. The only board with an INTERN + input is the BTTV_BOARD_AVERMEDIA98. I wonder how + that was tested. My guess is that the whole INTERN + input does not work. */ + in = MSP_INPUT(MSP_IN_SCART2, MSP_IN_TUNER1, + MSP_DSP_IN_SCART, MSP_DSP_IN_SCART); + break; + case TVAUDIO_INPUT_TUNER: + default: + /* This is the only card that uses TUNER2, and afaik, + is the only difference between the VOODOOTV_FM + and VOODOOTV_200 */ + if (btv->c.type == BTTV_BOARD_VOODOOTV_200) + in = MSP_INPUT(MSP_IN_SCART1, MSP_IN_TUNER2, \ + MSP_DSP_IN_TUNER, MSP_DSP_IN_TUNER); + else + in = MSP_INPUT_DEFAULT; + break; + } + v4l2_subdev_call(btv->sd_msp34xx, audio, s_routing, + in, MSP_OUTPUT_DEFAULT, 0); + } + if (btv->sd_tvaudio) { + v4l2_subdev_call(btv->sd_tvaudio, audio, s_routing, + input, 0, 0); + } + return 0; +} + +static inline int +audio_mute(struct bttv *btv, int mute) +{ + return audio_mux(btv, btv->audio, mute); +} + +static inline int +audio_input(struct bttv *btv, int input) +{ + return audio_mux(btv, input, btv->mute); +} + +static void +bttv_crop_calc_limits(struct bttv_crop *c) +{ + /* Scale factor min. 1:1, max. 16:1. Min. image size + 48 x 32. Scaled width must be a multiple of 4. */ + + if (1) { + /* For bug compatibility with VIDIOCGCAP and image + size checks in earlier driver versions. */ + c->min_scaled_width = 48; + c->min_scaled_height = 32; + } else { + c->min_scaled_width = + (max(48, c->rect.width >> 4) + 3) & ~3; + c->min_scaled_height = + max(32, c->rect.height >> 4); + } + + c->max_scaled_width = c->rect.width & ~3; + c->max_scaled_height = c->rect.height; +} + +static void +bttv_crop_reset(struct bttv_crop *c, unsigned int norm) +{ + c->rect = bttv_tvnorms[norm].cropcap.defrect; + bttv_crop_calc_limits(c); +} + +/* Call with btv->lock down. */ +static int +set_tvnorm(struct bttv *btv, unsigned int norm) +{ + const struct bttv_tvnorm *tvnorm; + v4l2_std_id id; + + BUG_ON(norm >= BTTV_TVNORMS); + BUG_ON(btv->tvnorm >= BTTV_TVNORMS); + + tvnorm = &bttv_tvnorms[norm]; + + if (memcmp(&bttv_tvnorms[btv->tvnorm].cropcap, &tvnorm->cropcap, + sizeof (tvnorm->cropcap))) { + bttv_crop_reset(&btv->crop[0], norm); + btv->crop[1] = btv->crop[0]; /* current = default */ + + if (0 == (btv->resources & VIDEO_RESOURCES)) { + btv->crop_start = tvnorm->cropcap.bounds.top + + tvnorm->cropcap.bounds.height; + } + } + + btv->tvnorm = norm; + + btwrite(tvnorm->adelay, BT848_ADELAY); + btwrite(tvnorm->bdelay, BT848_BDELAY); + btaor(tvnorm->iform,~(BT848_IFORM_NORM|BT848_IFORM_XTBOTH), + BT848_IFORM); + btwrite(tvnorm->vbipack, BT848_VBI_PACK_SIZE); + btwrite(1, BT848_VBI_PACK_DEL); + bt848A_set_timing(btv); + + switch (btv->c.type) { + case BTTV_BOARD_VOODOOTV_FM: + case BTTV_BOARD_VOODOOTV_200: + bttv_tda9880_setnorm(btv, gpio_read()); + break; + } + id = tvnorm->v4l2_id; + bttv_call_all(btv, core, s_std, id); + + return 0; +} + +/* Call with btv->lock down. */ +static void +set_input(struct bttv *btv, unsigned int input, unsigned int norm) +{ + unsigned long flags; + + btv->input = input; + if (irq_iswitch) { + spin_lock_irqsave(&btv->s_lock,flags); + if (btv->curr.frame_irq) { + /* active capture -> delayed input switch */ + btv->new_input = input; + } else { + video_mux(btv,input); + } + spin_unlock_irqrestore(&btv->s_lock,flags); + } else { + video_mux(btv,input); + } + audio_input(btv, (btv->tuner_type != TUNER_ABSENT && input == 0) ? + TVAUDIO_INPUT_TUNER : TVAUDIO_INPUT_EXTERN); + set_tvnorm(btv, norm); +} + +static void init_irqreg(struct bttv *btv) +{ + /* clear status */ + btwrite(0xfffffUL, BT848_INT_STAT); + + if (bttv_tvcards[btv->c.type].no_video) { + /* i2c only */ + btwrite(BT848_INT_I2CDONE, + BT848_INT_MASK); + } else { + /* full video */ + btwrite((btv->triton1) | + (btv->gpioirq ? BT848_INT_GPINT : 0) | + BT848_INT_SCERR | + (fdsr ? BT848_INT_FDSR : 0) | + BT848_INT_RISCI | BT848_INT_OCERR | + BT848_INT_FMTCHG|BT848_INT_HLOCK| + BT848_INT_I2CDONE, + BT848_INT_MASK); + } +} + +static void init_bt848(struct bttv *btv) +{ + int val; + + if (bttv_tvcards[btv->c.type].no_video) { + /* very basic init only */ + init_irqreg(btv); + return; + } + + btwrite(0x00, BT848_CAP_CTL); + btwrite(BT848_COLOR_CTL_GAMMA, BT848_COLOR_CTL); + btwrite(BT848_IFORM_XTAUTO | BT848_IFORM_AUTO, BT848_IFORM); + + /* set planar and packed mode trigger points and */ + /* set rising edge of inverted GPINTR pin as irq trigger */ + btwrite(BT848_GPIO_DMA_CTL_PKTP_32| + BT848_GPIO_DMA_CTL_PLTP1_16| + BT848_GPIO_DMA_CTL_PLTP23_16| + BT848_GPIO_DMA_CTL_GPINTC| + BT848_GPIO_DMA_CTL_GPINTI, + BT848_GPIO_DMA_CTL); + + val = btv->opt_chroma_agc ? BT848_SCLOOP_CAGC : 0; + btwrite(val, BT848_E_SCLOOP); + btwrite(val, BT848_O_SCLOOP); + + btwrite(0x20, BT848_E_VSCALE_HI); + btwrite(0x20, BT848_O_VSCALE_HI); + btwrite(BT848_ADC_RESERVED | (btv->opt_adc_crush ? BT848_ADC_CRUSH : 0), + BT848_ADC); + + btwrite(whitecrush_upper, BT848_WC_UP); + btwrite(whitecrush_lower, BT848_WC_DOWN); + + if (btv->opt_lumafilter) { + btwrite(0, BT848_E_CONTROL); + btwrite(0, BT848_O_CONTROL); + } else { + btwrite(BT848_CONTROL_LDEC, BT848_E_CONTROL); + btwrite(BT848_CONTROL_LDEC, BT848_O_CONTROL); + } + + bt848_bright(btv, btv->bright); + bt848_hue(btv, btv->hue); + bt848_contrast(btv, btv->contrast); + bt848_sat(btv, btv->saturation); + + /* interrupt */ + init_irqreg(btv); +} + +static void bttv_reinit_bt848(struct bttv *btv) +{ + unsigned long flags; + + if (bttv_verbose) + pr_info("%d: reset, reinitialize\n", btv->c.nr); + spin_lock_irqsave(&btv->s_lock,flags); + btv->errors=0; + bttv_set_dma(btv,0); + spin_unlock_irqrestore(&btv->s_lock,flags); + + init_bt848(btv); + btv->pll.pll_current = -1; + set_input(btv, btv->input, btv->tvnorm); +} + +static int bttv_g_ctrl(struct file *file, void *priv, + struct v4l2_control *c) +{ + struct bttv_fh *fh = priv; + struct bttv *btv = fh->btv; + + switch (c->id) { + case V4L2_CID_BRIGHTNESS: + c->value = btv->bright; + break; + case V4L2_CID_HUE: + c->value = btv->hue; + break; + case V4L2_CID_CONTRAST: + c->value = btv->contrast; + break; + case V4L2_CID_SATURATION: + c->value = btv->saturation; + break; + + case V4L2_CID_AUDIO_MUTE: + case V4L2_CID_AUDIO_VOLUME: + case V4L2_CID_AUDIO_BALANCE: + case V4L2_CID_AUDIO_BASS: + case V4L2_CID_AUDIO_TREBLE: + bttv_call_all(btv, core, g_ctrl, c); + break; + + case V4L2_CID_PRIVATE_CHROMA_AGC: + c->value = btv->opt_chroma_agc; + break; + case V4L2_CID_PRIVATE_COMBFILTER: + c->value = btv->opt_combfilter; + break; + case V4L2_CID_PRIVATE_LUMAFILTER: + c->value = btv->opt_lumafilter; + break; + case V4L2_CID_PRIVATE_AUTOMUTE: + c->value = btv->opt_automute; + break; + case V4L2_CID_PRIVATE_AGC_CRUSH: + c->value = btv->opt_adc_crush; + break; + case V4L2_CID_PRIVATE_VCR_HACK: + c->value = btv->opt_vcr_hack; + break; + case V4L2_CID_PRIVATE_WHITECRUSH_UPPER: + c->value = btv->opt_whitecrush_upper; + break; + case V4L2_CID_PRIVATE_WHITECRUSH_LOWER: + c->value = btv->opt_whitecrush_lower; + break; + case V4L2_CID_PRIVATE_UV_RATIO: + c->value = btv->opt_uv_ratio; + break; + case V4L2_CID_PRIVATE_FULL_LUMA_RANGE: + c->value = btv->opt_full_luma_range; + break; + case V4L2_CID_PRIVATE_CORING: + c->value = btv->opt_coring; + break; + default: + return -EINVAL; + } + return 0; +} + +static int bttv_s_ctrl(struct file *file, void *f, + struct v4l2_control *c) +{ + int err; + int val; + struct bttv_fh *fh = f; + struct bttv *btv = fh->btv; + + err = v4l2_prio_check(&btv->prio, fh->prio); + if (0 != err) + return err; + + switch (c->id) { + case V4L2_CID_BRIGHTNESS: + bt848_bright(btv, c->value); + break; + case V4L2_CID_HUE: + bt848_hue(btv, c->value); + break; + case V4L2_CID_CONTRAST: + bt848_contrast(btv, c->value); + break; + case V4L2_CID_SATURATION: + bt848_sat(btv, c->value); + break; + case V4L2_CID_AUDIO_MUTE: + audio_mute(btv, c->value); + /* fall through */ + case V4L2_CID_AUDIO_VOLUME: + if (btv->volume_gpio) + btv->volume_gpio(btv, c->value); + + bttv_call_all(btv, core, s_ctrl, c); + break; + case V4L2_CID_AUDIO_BALANCE: + case V4L2_CID_AUDIO_BASS: + case V4L2_CID_AUDIO_TREBLE: + bttv_call_all(btv, core, s_ctrl, c); + break; + + case V4L2_CID_PRIVATE_CHROMA_AGC: + btv->opt_chroma_agc = c->value; + val = btv->opt_chroma_agc ? BT848_SCLOOP_CAGC : 0; + btwrite(val, BT848_E_SCLOOP); + btwrite(val, BT848_O_SCLOOP); + break; + case V4L2_CID_PRIVATE_COMBFILTER: + btv->opt_combfilter = c->value; + break; + case V4L2_CID_PRIVATE_LUMAFILTER: + btv->opt_lumafilter = c->value; + if (btv->opt_lumafilter) { + btand(~BT848_CONTROL_LDEC, BT848_E_CONTROL); + btand(~BT848_CONTROL_LDEC, BT848_O_CONTROL); + } else { + btor(BT848_CONTROL_LDEC, BT848_E_CONTROL); + btor(BT848_CONTROL_LDEC, BT848_O_CONTROL); + } + break; + case V4L2_CID_PRIVATE_AUTOMUTE: + btv->opt_automute = c->value; + break; + case V4L2_CID_PRIVATE_AGC_CRUSH: + btv->opt_adc_crush = c->value; + btwrite(BT848_ADC_RESERVED | + (btv->opt_adc_crush ? BT848_ADC_CRUSH : 0), + BT848_ADC); + break; + case V4L2_CID_PRIVATE_VCR_HACK: + btv->opt_vcr_hack = c->value; + break; + case V4L2_CID_PRIVATE_WHITECRUSH_UPPER: + btv->opt_whitecrush_upper = c->value; + btwrite(c->value, BT848_WC_UP); + break; + case V4L2_CID_PRIVATE_WHITECRUSH_LOWER: + btv->opt_whitecrush_lower = c->value; + btwrite(c->value, BT848_WC_DOWN); + break; + case V4L2_CID_PRIVATE_UV_RATIO: + btv->opt_uv_ratio = c->value; + bt848_sat(btv, btv->saturation); + break; + case V4L2_CID_PRIVATE_FULL_LUMA_RANGE: + btv->opt_full_luma_range = c->value; + btaor((c->value<<7), ~BT848_OFORM_RANGE, BT848_OFORM); + break; + case V4L2_CID_PRIVATE_CORING: + btv->opt_coring = c->value; + btaor((c->value<<5), ~BT848_OFORM_CORE32, BT848_OFORM); + break; + default: + return -EINVAL; + } + return 0; +} + +/* ----------------------------------------------------------------------- */ + +void bttv_gpio_tracking(struct bttv *btv, char *comment) +{ + unsigned int outbits, data; + outbits = btread(BT848_GPIO_OUT_EN); + data = btread(BT848_GPIO_DATA); + pr_debug("%d: gpio: en=%08x, out=%08x in=%08x [%s]\n", + btv->c.nr, outbits, data & outbits, data & ~outbits, comment); +} + +static void bttv_field_count(struct bttv *btv) +{ + int need_count = 0; + + if (btv->users) + need_count++; + + if (need_count) { + /* start field counter */ + btor(BT848_INT_VSYNC,BT848_INT_MASK); + } else { + /* stop field counter */ + btand(~BT848_INT_VSYNC,BT848_INT_MASK); + btv->field_count = 0; + } +} + +static const struct bttv_format* +format_by_fourcc(int fourcc) +{ + unsigned int i; + + for (i = 0; i < FORMATS; i++) { + if (-1 == formats[i].fourcc) + continue; + if (formats[i].fourcc == fourcc) + return formats+i; + } + return NULL; +} + +/* ----------------------------------------------------------------------- */ +/* misc helpers */ + +static int +bttv_switch_overlay(struct bttv *btv, struct bttv_fh *fh, + struct bttv_buffer *new) +{ + struct bttv_buffer *old; + unsigned long flags; + int retval = 0; + + dprintk("switch_overlay: enter [new=%p]\n", new); + if (new) + new->vb.state = VIDEOBUF_DONE; + spin_lock_irqsave(&btv->s_lock,flags); + old = btv->screen; + btv->screen = new; + btv->loop_irq |= 1; + bttv_set_dma(btv, 0x03); + spin_unlock_irqrestore(&btv->s_lock,flags); + if (NULL != old) { + dprintk("switch_overlay: old=%p state is %d\n", + old, old->vb.state); + bttv_dma_free(&fh->cap,btv, old); + kfree(old); + } + if (NULL == new) + free_btres_lock(btv,fh,RESOURCE_OVERLAY); + dprintk("switch_overlay: done\n"); + return retval; +} + +/* ----------------------------------------------------------------------- */ +/* video4linux (1) interface */ + +static int bttv_prepare_buffer(struct videobuf_queue *q,struct bttv *btv, + struct bttv_buffer *buf, + const struct bttv_format *fmt, + unsigned int width, unsigned int height, + enum v4l2_field field) +{ + struct bttv_fh *fh = q->priv_data; + int redo_dma_risc = 0; + struct bttv_crop c; + int norm; + int rc; + + /* check settings */ + if (NULL == fmt) + return -EINVAL; + if (fmt->btformat == BT848_COLOR_FMT_RAW) { + width = RAW_BPL; + height = RAW_LINES*2; + if (width*height > buf->vb.bsize) + return -EINVAL; + buf->vb.size = buf->vb.bsize; + + /* Make sure tvnorm and vbi_end remain consistent + until we're done. */ + + norm = btv->tvnorm; + + /* In this mode capturing always starts at defrect.top + (default VDELAY), ignoring cropping parameters. */ + if (btv->vbi_end > bttv_tvnorms[norm].cropcap.defrect.top) { + return -EINVAL; + } + + c.rect = bttv_tvnorms[norm].cropcap.defrect; + } else { + norm = btv->tvnorm; + c = btv->crop[!!fh->do_crop]; + + if (width < c.min_scaled_width || + width > c.max_scaled_width || + height < c.min_scaled_height) + return -EINVAL; + + switch (field) { + case V4L2_FIELD_TOP: + case V4L2_FIELD_BOTTOM: + case V4L2_FIELD_ALTERNATE: + /* btv->crop counts frame lines. Max. scale + factor is 16:1 for frames, 8:1 for fields. */ + if (height * 2 > c.max_scaled_height) + return -EINVAL; + break; + + default: + if (height > c.max_scaled_height) + return -EINVAL; + break; + } + + buf->vb.size = (width * height * fmt->depth) >> 3; + if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size) + return -EINVAL; + } + + /* alloc + fill struct bttv_buffer (if changed) */ + if (buf->vb.width != width || buf->vb.height != height || + buf->vb.field != field || + buf->tvnorm != norm || buf->fmt != fmt || + buf->crop.top != c.rect.top || + buf->crop.left != c.rect.left || + buf->crop.width != c.rect.width || + buf->crop.height != c.rect.height) { + buf->vb.width = width; + buf->vb.height = height; + buf->vb.field = field; + buf->tvnorm = norm; + buf->fmt = fmt; + buf->crop = c.rect; + redo_dma_risc = 1; + } + + /* alloc risc memory */ + if (VIDEOBUF_NEEDS_INIT == buf->vb.state) { + redo_dma_risc = 1; + if (0 != (rc = videobuf_iolock(q,&buf->vb,&btv->fbuf))) + goto fail; + } + + if (redo_dma_risc) + if (0 != (rc = bttv_buffer_risc(btv,buf))) + goto fail; + + buf->vb.state = VIDEOBUF_PREPARED; + return 0; + + fail: + bttv_dma_free(q,btv,buf); + return rc; +} + +static int +buffer_setup(struct videobuf_queue *q, unsigned int *count, unsigned int *size) +{ + struct bttv_fh *fh = q->priv_data; + + *size = fh->fmt->depth*fh->width*fh->height >> 3; + if (0 == *count) + *count = gbuffers; + if (*size * *count > gbuffers * gbufsize) + *count = (gbuffers * gbufsize) / *size; + return 0; +} + +static int +buffer_prepare(struct videobuf_queue *q, struct videobuf_buffer *vb, + enum v4l2_field field) +{ + struct bttv_buffer *buf = container_of(vb,struct bttv_buffer,vb); + struct bttv_fh *fh = q->priv_data; + + return bttv_prepare_buffer(q,fh->btv, buf, fh->fmt, + fh->width, fh->height, field); +} + +static void +buffer_queue(struct videobuf_queue *q, struct videobuf_buffer *vb) +{ + struct bttv_buffer *buf = container_of(vb,struct bttv_buffer,vb); + struct bttv_fh *fh = q->priv_data; + struct bttv *btv = fh->btv; + + buf->vb.state = VIDEOBUF_QUEUED; + list_add_tail(&buf->vb.queue,&btv->capture); + if (!btv->curr.frame_irq) { + btv->loop_irq |= 1; + bttv_set_dma(btv, 0x03); + } +} + +static void buffer_release(struct videobuf_queue *q, struct videobuf_buffer *vb) +{ + struct bttv_buffer *buf = container_of(vb,struct bttv_buffer,vb); + struct bttv_fh *fh = q->priv_data; + + bttv_dma_free(q,fh->btv,buf); +} + +static struct videobuf_queue_ops bttv_video_qops = { + .buf_setup = buffer_setup, + .buf_prepare = buffer_prepare, + .buf_queue = buffer_queue, + .buf_release = buffer_release, +}; + +static int bttv_s_std(struct file *file, void *priv, v4l2_std_id *id) +{ + struct bttv_fh *fh = priv; + struct bttv *btv = fh->btv; + unsigned int i; + int err; + + err = v4l2_prio_check(&btv->prio, fh->prio); + if (err) + goto err; + + for (i = 0; i < BTTV_TVNORMS; i++) + if (*id & bttv_tvnorms[i].v4l2_id) + break; + if (i == BTTV_TVNORMS) { + err = -EINVAL; + goto err; + } + + set_tvnorm(btv, i); + +err: + + return err; +} + +static int bttv_querystd(struct file *file, void *f, v4l2_std_id *id) +{ + struct bttv_fh *fh = f; + struct bttv *btv = fh->btv; + + if (btread(BT848_DSTATUS) & BT848_DSTATUS_NUML) + *id = V4L2_STD_625_50; + else + *id = V4L2_STD_525_60; + return 0; +} + +static int bttv_enum_input(struct file *file, void *priv, + struct v4l2_input *i) +{ + struct bttv_fh *fh = priv; + struct bttv *btv = fh->btv; + int rc = 0; + + if (i->index >= bttv_tvcards[btv->c.type].video_inputs) { + rc = -EINVAL; + goto err; + } + + i->type = V4L2_INPUT_TYPE_CAMERA; + i->audioset = 1; + + if (btv->tuner_type != TUNER_ABSENT && i->index == 0) { + sprintf(i->name, "Television"); + i->type = V4L2_INPUT_TYPE_TUNER; + i->tuner = 0; + } else if (i->index == btv->svhs) { + sprintf(i->name, "S-Video"); + } else { + sprintf(i->name, "Composite%d", i->index); + } + + if (i->index == btv->input) { + __u32 dstatus = btread(BT848_DSTATUS); + if (0 == (dstatus & BT848_DSTATUS_PRES)) + i->status |= V4L2_IN_ST_NO_SIGNAL; + if (0 == (dstatus & BT848_DSTATUS_HLOC)) + i->status |= V4L2_IN_ST_NO_H_LOCK; + } + + i->std = BTTV_NORMS; + +err: + + return rc; +} + +static int bttv_g_input(struct file *file, void *priv, unsigned int *i) +{ + struct bttv_fh *fh = priv; + struct bttv *btv = fh->btv; + + *i = btv->input; + + return 0; +} + +static int bttv_s_input(struct file *file, void *priv, unsigned int i) +{ + struct bttv_fh *fh = priv; + struct bttv *btv = fh->btv; + + int err; + + err = v4l2_prio_check(&btv->prio, fh->prio); + if (unlikely(err)) + goto err; + + if (i > bttv_tvcards[btv->c.type].video_inputs) { + err = -EINVAL; + goto err; + } + + set_input(btv, i, btv->tvnorm); + +err: + return 0; +} + +static int bttv_s_tuner(struct file *file, void *priv, + struct v4l2_tuner *t) +{ + struct bttv_fh *fh = priv; + struct bttv *btv = fh->btv; + int err; + + if (unlikely(0 != t->index)) + return -EINVAL; + + if (unlikely(btv->tuner_type == TUNER_ABSENT)) { + err = -EINVAL; + goto err; + } + + err = v4l2_prio_check(&btv->prio, fh->prio); + if (unlikely(err)) + goto err; + + bttv_call_all(btv, tuner, s_tuner, t); + + if (btv->audio_mode_gpio) + btv->audio_mode_gpio(btv, t, 1); + +err: + + return 0; +} + +static int bttv_g_frequency(struct file *file, void *priv, + struct v4l2_frequency *f) +{ + struct bttv_fh *fh = priv; + struct bttv *btv = fh->btv; + + f->type = btv->radio_user ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; + f->frequency = btv->freq; + + return 0; +} + +static int bttv_s_frequency(struct file *file, void *priv, + struct v4l2_frequency *f) +{ + struct bttv_fh *fh = priv; + struct bttv *btv = fh->btv; + int err; + + if (unlikely(f->tuner != 0)) + return -EINVAL; + + err = v4l2_prio_check(&btv->prio, fh->prio); + if (unlikely(err)) + goto err; + + if (unlikely(f->type != (btv->radio_user + ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV))) { + err = -EINVAL; + goto err; + } + btv->freq = f->frequency; + bttv_call_all(btv, tuner, s_frequency, f); + if (btv->has_matchbox && btv->radio_user) + tea5757_set_freq(btv, btv->freq); +err: + + return 0; +} + +static int bttv_log_status(struct file *file, void *f) +{ + struct bttv_fh *fh = f; + struct bttv *btv = fh->btv; + + bttv_call_all(btv, core, log_status); + return 0; +} + +#ifdef CONFIG_VIDEO_ADV_DEBUG +static int bttv_g_register(struct file *file, void *f, + struct v4l2_dbg_register *reg) +{ + struct bttv_fh *fh = f; + struct bttv *btv = fh->btv; + + if (!capable(CAP_SYS_ADMIN)) + return -EPERM; + + if (!v4l2_chip_match_host(®->match)) + return -EINVAL; + + /* bt848 has a 12-bit register space */ + reg->reg &= 0xfff; + reg->val = btread(reg->reg); + reg->size = 1; + + return 0; +} + +static int bttv_s_register(struct file *file, void *f, + struct v4l2_dbg_register *reg) +{ + struct bttv_fh *fh = f; + struct bttv *btv = fh->btv; + + if (!capable(CAP_SYS_ADMIN)) + return -EPERM; + + if (!v4l2_chip_match_host(®->match)) + return -EINVAL; + + /* bt848 has a 12-bit register space */ + reg->reg &= 0xfff; + btwrite(reg->val, reg->reg); + + return 0; +} +#endif + +/* Given cropping boundaries b and the scaled width and height of a + single field or frame, which must not exceed hardware limits, this + function adjusts the cropping parameters c. */ +static void +bttv_crop_adjust (struct bttv_crop * c, + const struct v4l2_rect * b, + __s32 width, + __s32 height, + enum v4l2_field field) +{ + __s32 frame_height = height << !V4L2_FIELD_HAS_BOTH(field); + __s32 max_left; + __s32 max_top; + + if (width < c->min_scaled_width) { + /* Max. hor. scale factor 16:1. */ + c->rect.width = width * 16; + } else if (width > c->max_scaled_width) { + /* Min. hor. scale factor 1:1. */ + c->rect.width = width; + + max_left = b->left + b->width - width; + max_left = min(max_left, (__s32) MAX_HDELAY); + if (c->rect.left > max_left) + c->rect.left = max_left; + } + + if (height < c->min_scaled_height) { + /* Max. vert. scale factor 16:1, single fields 8:1. */ + c->rect.height = height * 16; + } else if (frame_height > c->max_scaled_height) { + /* Min. vert. scale factor 1:1. + Top and height count field lines times two. */ + c->rect.height = (frame_height + 1) & ~1; + + max_top = b->top + b->height - c->rect.height; + if (c->rect.top > max_top) + c->rect.top = max_top; + } + + bttv_crop_calc_limits(c); +} + +/* Returns an error if scaling to a frame or single field with the given + width and height is not possible with the current cropping parameters + and width aligned according to width_mask. If adjust_size is TRUE the + function may adjust the width and/or height instead, rounding width + to (width + width_bias) & width_mask. If adjust_crop is TRUE it may + also adjust the current cropping parameters to get closer to the + desired image size. */ +static int +limit_scaled_size_lock (struct bttv_fh * fh, + __s32 * width, + __s32 * height, + enum v4l2_field field, + unsigned int width_mask, + unsigned int width_bias, + int adjust_size, + int adjust_crop) +{ + struct bttv *btv = fh->btv; + const struct v4l2_rect *b; + struct bttv_crop *c; + __s32 min_width; + __s32 min_height; + __s32 max_width; + __s32 max_height; + int rc; + + BUG_ON((int) width_mask >= 0 || + width_bias >= (unsigned int) -width_mask); + + /* Make sure tvnorm, vbi_end and the current cropping parameters + remain consistent until we're done. */ + + b = &bttv_tvnorms[btv->tvnorm].cropcap.bounds; + + /* Do crop - use current, don't - use default parameters. */ + c = &btv->crop[!!fh->do_crop]; + + if (fh->do_crop + && adjust_size + && adjust_crop + && !locked_btres(btv, VIDEO_RESOURCES)) { + min_width = 48; + min_height = 32; + + /* We cannot scale up. When the scaled image is larger + than crop.rect we adjust the crop.rect as required + by the V4L2 spec, hence cropcap.bounds are our limit. */ + max_width = min(b->width, (__s32) MAX_HACTIVE); + max_height = b->height; + + /* We cannot capture the same line as video and VBI data. + Note btv->vbi_end is really a minimum, see + bttv_vbi_try_fmt(). */ + if (btv->vbi_end > b->top) { + max_height -= btv->vbi_end - b->top; + rc = -EBUSY; + if (min_height > max_height) + goto fail; + } + } else { + rc = -EBUSY; + if (btv->vbi_end > c->rect.top) + goto fail; + + min_width = c->min_scaled_width; + min_height = c->min_scaled_height; + max_width = c->max_scaled_width; + max_height = c->max_scaled_height; + + adjust_crop = 0; + } + + min_width = (min_width - width_mask - 1) & width_mask; + max_width = max_width & width_mask; + + /* Max. scale factor is 16:1 for frames, 8:1 for fields. */ + min_height = min_height; + /* Min. scale factor is 1:1. */ + max_height >>= !V4L2_FIELD_HAS_BOTH(field); + + if (adjust_size) { + *width = clamp(*width, min_width, max_width); + *height = clamp(*height, min_height, max_height); + + /* Round after clamping to avoid overflow. */ + *width = (*width + width_bias) & width_mask; + + if (adjust_crop) { + bttv_crop_adjust(c, b, *width, *height, field); + + if (btv->vbi_end > c->rect.top) { + /* Move the crop window out of the way. */ + c->rect.top = btv->vbi_end; + } + } + } else { + rc = -EINVAL; + if (*width < min_width || + *height < min_height || + *width > max_width || + *height > max_height || + 0 != (*width & ~width_mask)) + goto fail; + } + + rc = 0; /* success */ + + fail: + + return rc; +} + +/* Returns an error if the given overlay window dimensions are not + possible with the current cropping parameters. If adjust_size is + TRUE the function may adjust the window width and/or height + instead, however it always rounds the horizontal position and + width as btcx_align() does. If adjust_crop is TRUE the function + may also adjust the current cropping parameters to get closer + to the desired window size. */ +static int +verify_window_lock (struct bttv_fh * fh, + struct v4l2_window * win, + int adjust_size, + int adjust_crop) +{ + enum v4l2_field field; + unsigned int width_mask; + int rc; + + if (win->w.width < 48 || win->w.height < 32) + return -EINVAL; + if (win->clipcount > 2048) + return -EINVAL; + + field = win->field; + + if (V4L2_FIELD_ANY == field) { + __s32 height2; + + height2 = fh->btv->crop[!!fh->do_crop].rect.height >> 1; + field = (win->w.height > height2) + ? V4L2_FIELD_INTERLACED + : V4L2_FIELD_TOP; + } + switch (field) { + case V4L2_FIELD_TOP: + case V4L2_FIELD_BOTTOM: + case V4L2_FIELD_INTERLACED: + break; + default: + return -EINVAL; + } + + /* 4-byte alignment. */ + if (NULL == fh->ovfmt) + return -EINVAL; + width_mask = ~0; + switch (fh->ovfmt->depth) { + case 8: + case 24: + width_mask = ~3; + break; + case 16: + width_mask = ~1; + break; + case 32: + break; + default: + BUG(); + } + + win->w.width -= win->w.left & ~width_mask; + win->w.left = (win->w.left - width_mask - 1) & width_mask; + + rc = limit_scaled_size_lock(fh, &win->w.width, &win->w.height, + field, width_mask, + /* width_bias: round down */ 0, + adjust_size, adjust_crop); + if (0 != rc) + return rc; + + win->field = field; + return 0; +} + +static int setup_window_lock(struct bttv_fh *fh, struct bttv *btv, + struct v4l2_window *win, int fixup) +{ + struct v4l2_clip *clips = NULL; + int n,size,retval = 0; + + if (NULL == fh->ovfmt) + return -EINVAL; + if (!(fh->ovfmt->flags & FORMAT_FLAGS_PACKED)) + return -EINVAL; + retval = verify_window_lock(fh, win, + /* adjust_size */ fixup, + /* adjust_crop */ fixup); + if (0 != retval) + return retval; + + /* copy clips -- luckily v4l1 + v4l2 are binary + compatible here ...*/ + n = win->clipcount; + size = sizeof(*clips)*(n+4); + clips = kmalloc(size,GFP_KERNEL); + if (NULL == clips) + return -ENOMEM; + if (n > 0) { + if (copy_from_user(clips,win->clips,sizeof(struct v4l2_clip)*n)) { + kfree(clips); + return -EFAULT; + } + } + + /* clip against screen */ + if (NULL != btv->fbuf.base) + n = btcx_screen_clips(btv->fbuf.fmt.width, btv->fbuf.fmt.height, + &win->w, clips, n); + btcx_sort_clips(clips,n); + + /* 4-byte alignments */ + switch (fh->ovfmt->depth) { + case 8: + case 24: + btcx_align(&win->w, clips, n, 3); + break; + case 16: + btcx_align(&win->w, clips, n, 1); + break; + case 32: + /* no alignment fixups needed */ + break; + default: + BUG(); + } + + kfree(fh->ov.clips); + fh->ov.clips = clips; + fh->ov.nclips = n; + + fh->ov.w = win->w; + fh->ov.field = win->field; + fh->ov.setup_ok = 1; + + btv->init.ov.w.width = win->w.width; + btv->init.ov.w.height = win->w.height; + btv->init.ov.field = win->field; + + /* update overlay if needed */ + retval = 0; + if (check_btres(fh, RESOURCE_OVERLAY)) { + struct bttv_buffer *new; + + new = videobuf_sg_alloc(sizeof(*new)); + new->crop = btv->crop[!!fh->do_crop].rect; + bttv_overlay_risc(btv, &fh->ov, fh->ovfmt, new); + retval = bttv_switch_overlay(btv,fh,new); + } + return retval; +} + +/* ----------------------------------------------------------------------- */ + +static struct videobuf_queue* bttv_queue(struct bttv_fh *fh) +{ + struct videobuf_queue* q = NULL; + + switch (fh->type) { + case V4L2_BUF_TYPE_VIDEO_CAPTURE: + q = &fh->cap; + break; + case V4L2_BUF_TYPE_VBI_CAPTURE: + q = &fh->vbi; + break; + default: + BUG(); + } + return q; +} + +static int bttv_resource(struct bttv_fh *fh) +{ + int res = 0; + + switch (fh->type) { + case V4L2_BUF_TYPE_VIDEO_CAPTURE: + res = RESOURCE_VIDEO_STREAM; + break; + case V4L2_BUF_TYPE_VBI_CAPTURE: + res = RESOURCE_VBI; + break; + default: + BUG(); + } + return res; +} + +static int bttv_switch_type(struct bttv_fh *fh, enum v4l2_buf_type type) +{ + struct videobuf_queue *q = bttv_queue(fh); + int res = bttv_resource(fh); + + if (check_btres(fh,res)) + return -EBUSY; + if (videobuf_queue_is_busy(q)) + return -EBUSY; + fh->type = type; + return 0; +} + +static void +pix_format_set_size (struct v4l2_pix_format * f, + const struct bttv_format * fmt, + unsigned int width, + unsigned int height) +{ + f->width = width; + f->height = height; + + if (fmt->flags & FORMAT_FLAGS_PLANAR) { + f->bytesperline = width; /* Y plane */ + f->sizeimage = (width * height * fmt->depth) >> 3; + } else { + f->bytesperline = (width * fmt->depth) >> 3; + f->sizeimage = height * f->bytesperline; + } +} + +static int bttv_g_fmt_vid_cap(struct file *file, void *priv, + struct v4l2_format *f) +{ + struct bttv_fh *fh = priv; + + pix_format_set_size(&f->fmt.pix, fh->fmt, + fh->width, fh->height); + f->fmt.pix.field = fh->cap.field; + f->fmt.pix.pixelformat = fh->fmt->fourcc; + + return 0; +} + +static int bttv_g_fmt_vid_overlay(struct file *file, void *priv, + struct v4l2_format *f) +{ + struct bttv_fh *fh = priv; + + f->fmt.win.w = fh->ov.w; + f->fmt.win.field = fh->ov.field; + + return 0; +} + +static int bttv_try_fmt_vid_cap(struct file *file, void *priv, + struct v4l2_format *f) +{ + const struct bttv_format *fmt; + struct bttv_fh *fh = priv; + struct bttv *btv = fh->btv; + enum v4l2_field field; + __s32 width, height; + int rc; + + fmt = format_by_fourcc(f->fmt.pix.pixelformat); + if (NULL == fmt) + return -EINVAL; + + field = f->fmt.pix.field; + + if (V4L2_FIELD_ANY == field) { + __s32 height2; + + height2 = btv->crop[!!fh->do_crop].rect.height >> 1; + field = (f->fmt.pix.height > height2) + ? V4L2_FIELD_INTERLACED + : V4L2_FIELD_BOTTOM; + } + + if (V4L2_FIELD_SEQ_BT == field) + field = V4L2_FIELD_SEQ_TB; + + switch (field) { + case V4L2_FIELD_TOP: + case V4L2_FIELD_BOTTOM: + case V4L2_FIELD_ALTERNATE: + case V4L2_FIELD_INTERLACED: + break; + case V4L2_FIELD_SEQ_TB: + if (fmt->flags & FORMAT_FLAGS_PLANAR) + return -EINVAL; + break; + default: + return -EINVAL; + } + + width = f->fmt.pix.width; + height = f->fmt.pix.height; + + rc = limit_scaled_size_lock(fh, &width, &height, field, + /* width_mask: 4 pixels */ ~3, + /* width_bias: nearest */ 2, + /* adjust_size */ 1, + /* adjust_crop */ 0); + if (0 != rc) + return rc; + + /* update data for the application */ + f->fmt.pix.field = field; + pix_format_set_size(&f->fmt.pix, fmt, width, height); + + return 0; +} + +static int bttv_try_fmt_vid_overlay(struct file *file, void *priv, + struct v4l2_format *f) +{ + struct bttv_fh *fh = priv; + + return verify_window_lock(fh, &f->fmt.win, + /* adjust_size */ 1, + /* adjust_crop */ 0); +} + +static int bttv_s_fmt_vid_cap(struct file *file, void *priv, + struct v4l2_format *f) +{ + int retval; + const struct bttv_format *fmt; + struct bttv_fh *fh = priv; + struct bttv *btv = fh->btv; + __s32 width, height; + enum v4l2_field field; + + retval = bttv_switch_type(fh, f->type); + if (0 != retval) + return retval; + + retval = bttv_try_fmt_vid_cap(file, priv, f); + if (0 != retval) + return retval; + + width = f->fmt.pix.width; + height = f->fmt.pix.height; + field = f->fmt.pix.field; + + retval = limit_scaled_size_lock(fh, &width, &height, f->fmt.pix.field, + /* width_mask: 4 pixels */ ~3, + /* width_bias: nearest */ 2, + /* adjust_size */ 1, + /* adjust_crop */ 1); + if (0 != retval) + return retval; + + f->fmt.pix.field = field; + + fmt = format_by_fourcc(f->fmt.pix.pixelformat); + + /* update our state informations */ + fh->fmt = fmt; + fh->cap.field = f->fmt.pix.field; + fh->cap.last = V4L2_FIELD_NONE; + fh->width = f->fmt.pix.width; + fh->height = f->fmt.pix.height; + btv->init.fmt = fmt; + btv->init.width = f->fmt.pix.width; + btv->init.height = f->fmt.pix.height; + + return 0; +} + +static int bttv_s_fmt_vid_overlay(struct file *file, void *priv, + struct v4l2_format *f) +{ + struct bttv_fh *fh = priv; + struct bttv *btv = fh->btv; + + if (no_overlay > 0) { + pr_err("V4L2_BUF_TYPE_VIDEO_OVERLAY: no_overlay\n"); + return -EINVAL; + } + + return setup_window_lock(fh, btv, &f->fmt.win, 1); +} + +static int bttv_querycap(struct file *file, void *priv, + struct v4l2_capability *cap) +{ + struct bttv_fh *fh = priv; + struct bttv *btv = fh->btv; + + if (0 == v4l2) + return -EINVAL; + + strlcpy(cap->driver, "bttv", sizeof(cap->driver)); + strlcpy(cap->card, btv->video_dev->name, sizeof(cap->card)); + snprintf(cap->bus_info, sizeof(cap->bus_info), + "PCI:%s", pci_name(btv->c.pci)); + cap->capabilities = + V4L2_CAP_VIDEO_CAPTURE | + V4L2_CAP_VBI_CAPTURE | + V4L2_CAP_READWRITE | + V4L2_CAP_STREAMING; + if (no_overlay <= 0) + cap->capabilities |= V4L2_CAP_VIDEO_OVERLAY; + + /* + * No need to lock here: those vars are initialized during board + * probe and remains untouched during the rest of the driver lifecycle + */ + if (btv->has_saa6588) + cap->capabilities |= V4L2_CAP_RDS_CAPTURE; + if (btv->tuner_type != TUNER_ABSENT) + cap->capabilities |= V4L2_CAP_TUNER; + return 0; +} + +static int bttv_enum_fmt_cap_ovr(struct v4l2_fmtdesc *f) +{ + int index = -1, i; + + for (i = 0; i < FORMATS; i++) { + if (formats[i].fourcc != -1) + index++; + if ((unsigned int)index == f->index) + break; + } + if (FORMATS == i) + return -EINVAL; + + f->pixelformat = formats[i].fourcc; + strlcpy(f->description, formats[i].name, sizeof(f->description)); + + return i; +} + +static int bttv_enum_fmt_vid_cap(struct file *file, void *priv, + struct v4l2_fmtdesc *f) +{ + int rc = bttv_enum_fmt_cap_ovr(f); + + if (rc < 0) + return rc; + + return 0; +} + +static int bttv_enum_fmt_vid_overlay(struct file *file, void *priv, + struct v4l2_fmtdesc *f) +{ + int rc; + + if (no_overlay > 0) { + pr_err("V4L2_BUF_TYPE_VIDEO_OVERLAY: no_overlay\n"); + return -EINVAL; + } + + rc = bttv_enum_fmt_cap_ovr(f); + + if (rc < 0) + return rc; + + if (!(formats[rc].flags & FORMAT_FLAGS_PACKED)) + return -EINVAL; + + return 0; +} + +static int bttv_g_fbuf(struct file *file, void *f, + struct v4l2_framebuffer *fb) +{ + struct bttv_fh *fh = f; + struct bttv *btv = fh->btv; + + *fb = btv->fbuf; + fb->capability = V4L2_FBUF_CAP_LIST_CLIPPING; + if (fh->ovfmt) + fb->fmt.pixelformat = fh->ovfmt->fourcc; + return 0; +} + +static int bttv_overlay(struct file *file, void *f, unsigned int on) +{ + struct bttv_fh *fh = f; + struct bttv *btv = fh->btv; + struct bttv_buffer *new; + int retval = 0; + + if (on) { + /* verify args */ + if (unlikely(!btv->fbuf.base)) { + return -EINVAL; + } + if (unlikely(!fh->ov.setup_ok)) { + dprintk("%d: overlay: !setup_ok\n", btv->c.nr); + retval = -EINVAL; + } + if (retval) + return retval; + } + + if (!check_alloc_btres_lock(btv, fh, RESOURCE_OVERLAY)) + return -EBUSY; + + if (on) { + fh->ov.tvnorm = btv->tvnorm; + new = videobuf_sg_alloc(sizeof(*new)); + new->crop = btv->crop[!!fh->do_crop].rect; + bttv_overlay_risc(btv, &fh->ov, fh->ovfmt, new); + } else { + new = NULL; + } + + /* switch over */ + retval = bttv_switch_overlay(btv, fh, new); + return retval; +} + +static int bttv_s_fbuf(struct file *file, void *f, + const struct v4l2_framebuffer *fb) +{ + struct bttv_fh *fh = f; + struct bttv *btv = fh->btv; + const struct bttv_format *fmt; + int retval; + + if (!capable(CAP_SYS_ADMIN) && + !capable(CAP_SYS_RAWIO)) + return -EPERM; + + /* check args */ + fmt = format_by_fourcc(fb->fmt.pixelformat); + if (NULL == fmt) + return -EINVAL; + if (0 == (fmt->flags & FORMAT_FLAGS_PACKED)) + return -EINVAL; + + retval = -EINVAL; + if (fb->flags & V4L2_FBUF_FLAG_OVERLAY) { + __s32 width = fb->fmt.width; + __s32 height = fb->fmt.height; + + retval = limit_scaled_size_lock(fh, &width, &height, + V4L2_FIELD_INTERLACED, + /* width_mask */ ~3, + /* width_bias */ 2, + /* adjust_size */ 0, + /* adjust_crop */ 0); + if (0 != retval) + return retval; + } + + /* ok, accept it */ + btv->fbuf.base = fb->base; + btv->fbuf.fmt.width = fb->fmt.width; + btv->fbuf.fmt.height = fb->fmt.height; + if (0 != fb->fmt.bytesperline) + btv->fbuf.fmt.bytesperline = fb->fmt.bytesperline; + else + btv->fbuf.fmt.bytesperline = btv->fbuf.fmt.width*fmt->depth/8; + + retval = 0; + fh->ovfmt = fmt; + btv->init.ovfmt = fmt; + if (fb->flags & V4L2_FBUF_FLAG_OVERLAY) { + fh->ov.w.left = 0; + fh->ov.w.top = 0; + fh->ov.w.width = fb->fmt.width; + fh->ov.w.height = fb->fmt.height; + btv->init.ov.w.width = fb->fmt.width; + btv->init.ov.w.height = fb->fmt.height; + kfree(fh->ov.clips); + fh->ov.clips = NULL; + fh->ov.nclips = 0; + + if (check_btres(fh, RESOURCE_OVERLAY)) { + struct bttv_buffer *new; + + new = videobuf_sg_alloc(sizeof(*new)); + new->crop = btv->crop[!!fh->do_crop].rect; + bttv_overlay_risc(btv, &fh->ov, fh->ovfmt, new); + retval = bttv_switch_overlay(btv, fh, new); + } + } + return retval; +} + +static int bttv_reqbufs(struct file *file, void *priv, + struct v4l2_requestbuffers *p) +{ + struct bttv_fh *fh = priv; + return videobuf_reqbufs(bttv_queue(fh), p); +} + +static int bttv_querybuf(struct file *file, void *priv, + struct v4l2_buffer *b) +{ + struct bttv_fh *fh = priv; + return videobuf_querybuf(bttv_queue(fh), b); +} + +static int bttv_qbuf(struct file *file, void *priv, struct v4l2_buffer *b) +{ + struct bttv_fh *fh = priv; + struct bttv *btv = fh->btv; + int res = bttv_resource(fh); + + if (!check_alloc_btres_lock(btv, fh, res)) + return -EBUSY; + + return videobuf_qbuf(bttv_queue(fh), b); +} + +static int bttv_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b) +{ + struct bttv_fh *fh = priv; + return videobuf_dqbuf(bttv_queue(fh), b, + file->f_flags & O_NONBLOCK); +} + +static int bttv_streamon(struct file *file, void *priv, + enum v4l2_buf_type type) +{ + struct bttv_fh *fh = priv; + struct bttv *btv = fh->btv; + int res = bttv_resource(fh); + + if (!check_alloc_btres_lock(btv, fh, res)) + return -EBUSY; + return videobuf_streamon(bttv_queue(fh)); +} + + +static int bttv_streamoff(struct file *file, void *priv, + enum v4l2_buf_type type) +{ + struct bttv_fh *fh = priv; + struct bttv *btv = fh->btv; + int retval; + int res = bttv_resource(fh); + + + retval = videobuf_streamoff(bttv_queue(fh)); + if (retval < 0) + return retval; + free_btres_lock(btv, fh, res); + return 0; +} + +static int bttv_queryctrl(struct file *file, void *priv, + struct v4l2_queryctrl *c) +{ + struct bttv_fh *fh = priv; + struct bttv *btv = fh->btv; + const struct v4l2_queryctrl *ctrl; + + if ((c->id < V4L2_CID_BASE || + c->id >= V4L2_CID_LASTP1) && + (c->id < V4L2_CID_PRIVATE_BASE || + c->id >= V4L2_CID_PRIVATE_LASTP1)) + return -EINVAL; + + if (!btv->volume_gpio && (c->id == V4L2_CID_AUDIO_VOLUME)) + *c = no_ctl; + else { + ctrl = ctrl_by_id(c->id); + + *c = (NULL != ctrl) ? *ctrl : no_ctl; + } + + return 0; +} + +static int bttv_g_parm(struct file *file, void *f, + struct v4l2_streamparm *parm) +{ + struct bttv_fh *fh = f; + struct bttv *btv = fh->btv; + + v4l2_video_std_frame_period(bttv_tvnorms[btv->tvnorm].v4l2_id, + &parm->parm.capture.timeperframe); + + return 0; +} + +static int bttv_g_tuner(struct file *file, void *priv, + struct v4l2_tuner *t) +{ + struct bttv_fh *fh = priv; + struct bttv *btv = fh->btv; + + if (btv->tuner_type == TUNER_ABSENT) + return -EINVAL; + if (0 != t->index) + return -EINVAL; + + t->rxsubchans = V4L2_TUNER_SUB_MONO; + bttv_call_all(btv, tuner, g_tuner, t); + strcpy(t->name, "Television"); + t->capability = V4L2_TUNER_CAP_NORM; + t->type = V4L2_TUNER_ANALOG_TV; + if (btread(BT848_DSTATUS)&BT848_DSTATUS_HLOC) + t->signal = 0xffff; + + if (btv->audio_mode_gpio) + btv->audio_mode_gpio(btv, t, 0); + + return 0; +} + +static int bttv_g_priority(struct file *file, void *f, enum v4l2_priority *p) +{ + struct bttv_fh *fh = f; + struct bttv *btv = fh->btv; + + *p = v4l2_prio_max(&btv->prio); + + return 0; +} + +static int bttv_s_priority(struct file *file, void *f, + enum v4l2_priority prio) +{ + struct bttv_fh *fh = f; + struct bttv *btv = fh->btv; + int rc; + + rc = v4l2_prio_change(&btv->prio, &fh->prio, prio); + + return rc; +} + +static int bttv_cropcap(struct file *file, void *priv, + struct v4l2_cropcap *cap) +{ + struct bttv_fh *fh = priv; + struct bttv *btv = fh->btv; + + if (cap->type != V4L2_BUF_TYPE_VIDEO_CAPTURE && + cap->type != V4L2_BUF_TYPE_VIDEO_OVERLAY) + return -EINVAL; + + *cap = bttv_tvnorms[btv->tvnorm].cropcap; + + return 0; +} + +static int bttv_g_crop(struct file *file, void *f, struct v4l2_crop *crop) +{ + struct bttv_fh *fh = f; + struct bttv *btv = fh->btv; + + if (crop->type != V4L2_BUF_TYPE_VIDEO_CAPTURE && + crop->type != V4L2_BUF_TYPE_VIDEO_OVERLAY) + return -EINVAL; + + /* No fh->do_crop = 1; because btv->crop[1] may be + inconsistent with fh->width or fh->height and apps + do not expect a change here. */ + + crop->c = btv->crop[!!fh->do_crop].rect; + + return 0; +} + +static int bttv_s_crop(struct file *file, void *f, const struct v4l2_crop *crop) +{ + struct bttv_fh *fh = f; + struct bttv *btv = fh->btv; + const struct v4l2_rect *b; + int retval; + struct bttv_crop c; + __s32 b_left; + __s32 b_top; + __s32 b_right; + __s32 b_bottom; + + if (crop->type != V4L2_BUF_TYPE_VIDEO_CAPTURE && + crop->type != V4L2_BUF_TYPE_VIDEO_OVERLAY) + return -EINVAL; + + /* Make sure tvnorm, vbi_end and the current cropping + parameters remain consistent until we're done. Note + read() may change vbi_end in check_alloc_btres_lock(). */ + retval = v4l2_prio_check(&btv->prio, fh->prio); + if (0 != retval) { + return retval; + } + + retval = -EBUSY; + + if (locked_btres(fh->btv, VIDEO_RESOURCES)) { + return retval; + } + + b = &bttv_tvnorms[btv->tvnorm].cropcap.bounds; + + b_left = b->left; + b_right = b_left + b->width; + b_bottom = b->top + b->height; + + b_top = max(b->top, btv->vbi_end); + if (b_top + 32 >= b_bottom) { + return retval; + } + + /* Min. scaled size 48 x 32. */ + c.rect.left = clamp_t(s32, crop->c.left, b_left, b_right - 48); + c.rect.left = min(c.rect.left, (__s32) MAX_HDELAY); + + c.rect.width = clamp_t(s32, crop->c.width, + 48, b_right - c.rect.left); + + c.rect.top = clamp_t(s32, crop->c.top, b_top, b_bottom - 32); + /* Top and height must be a multiple of two. */ + c.rect.top = (c.rect.top + 1) & ~1; + + c.rect.height = clamp_t(s32, crop->c.height, + 32, b_bottom - c.rect.top); + c.rect.height = (c.rect.height + 1) & ~1; + + bttv_crop_calc_limits(&c); + + btv->crop[1] = c; + + fh->do_crop = 1; + + if (fh->width < c.min_scaled_width) { + fh->width = c.min_scaled_width; + btv->init.width = c.min_scaled_width; + } else if (fh->width > c.max_scaled_width) { + fh->width = c.max_scaled_width; + btv->init.width = c.max_scaled_width; + } + + if (fh->height < c.min_scaled_height) { + fh->height = c.min_scaled_height; + btv->init.height = c.min_scaled_height; + } else if (fh->height > c.max_scaled_height) { + fh->height = c.max_scaled_height; + btv->init.height = c.max_scaled_height; + } + + return 0; +} + +static int bttv_g_audio(struct file *file, void *priv, struct v4l2_audio *a) +{ + if (unlikely(a->index)) + return -EINVAL; + + strcpy(a->name, "audio"); + return 0; +} + +static int bttv_s_audio(struct file *file, void *priv, const struct v4l2_audio *a) +{ + if (unlikely(a->index)) + return -EINVAL; + + return 0; +} + +static ssize_t bttv_read(struct file *file, char __user *data, + size_t count, loff_t *ppos) +{ + struct bttv_fh *fh = file->private_data; + int retval = 0; + + if (fh->btv->errors) + bttv_reinit_bt848(fh->btv); + dprintk("%d: read count=%d type=%s\n", + fh->btv->c.nr, (int)count, v4l2_type_names[fh->type]); + + switch (fh->type) { + case V4L2_BUF_TYPE_VIDEO_CAPTURE: + if (!check_alloc_btres_lock(fh->btv, fh, RESOURCE_VIDEO_READ)) { + /* VIDEO_READ in use by another fh, + or VIDEO_STREAM by any fh. */ + return -EBUSY; + } + retval = videobuf_read_one(&fh->cap, data, count, ppos, + file->f_flags & O_NONBLOCK); + free_btres_lock(fh->btv, fh, RESOURCE_VIDEO_READ); + break; + case V4L2_BUF_TYPE_VBI_CAPTURE: + if (!check_alloc_btres_lock(fh->btv,fh,RESOURCE_VBI)) + return -EBUSY; + retval = videobuf_read_stream(&fh->vbi, data, count, ppos, 1, + file->f_flags & O_NONBLOCK); + break; + default: + BUG(); + } + return retval; +} + +static unsigned int bttv_poll(struct file *file, poll_table *wait) +{ + struct bttv_fh *fh = file->private_data; + struct bttv_buffer *buf; + enum v4l2_field field; + unsigned int rc = POLLERR; + + if (V4L2_BUF_TYPE_VBI_CAPTURE == fh->type) { + if (!check_alloc_btres_lock(fh->btv,fh,RESOURCE_VBI)) + return POLLERR; + return videobuf_poll_stream(file, &fh->vbi, wait); + } + + if (check_btres(fh,RESOURCE_VIDEO_STREAM)) { + /* streaming capture */ + if (list_empty(&fh->cap.stream)) + goto err; + buf = list_entry(fh->cap.stream.next,struct bttv_buffer,vb.stream); + } else { + /* read() capture */ + if (NULL == fh->cap.read_buf) { + /* need to capture a new frame */ + if (locked_btres(fh->btv,RESOURCE_VIDEO_STREAM)) + goto err; + fh->cap.read_buf = videobuf_sg_alloc(fh->cap.msize); + if (NULL == fh->cap.read_buf) + goto err; + fh->cap.read_buf->memory = V4L2_MEMORY_USERPTR; + field = videobuf_next_field(&fh->cap); + if (0 != fh->cap.ops->buf_prepare(&fh->cap,fh->cap.read_buf,field)) { + kfree (fh->cap.read_buf); + fh->cap.read_buf = NULL; + goto err; + } + fh->cap.ops->buf_queue(&fh->cap,fh->cap.read_buf); + fh->cap.read_off = 0; + } + buf = (struct bttv_buffer*)fh->cap.read_buf; + } + + poll_wait(file, &buf->vb.done, wait); + if (buf->vb.state == VIDEOBUF_DONE || + buf->vb.state == VIDEOBUF_ERROR) + rc = POLLIN|POLLRDNORM; + else + rc = 0; +err: + return rc; +} + +static int bttv_open(struct file *file) +{ + struct video_device *vdev = video_devdata(file); + struct bttv *btv = video_drvdata(file); + struct bttv_fh *fh; + enum v4l2_buf_type type = 0; + + dprintk("open dev=%s\n", video_device_node_name(vdev)); + + if (vdev->vfl_type == VFL_TYPE_GRABBER) { + type = V4L2_BUF_TYPE_VIDEO_CAPTURE; + } else if (vdev->vfl_type == VFL_TYPE_VBI) { + type = V4L2_BUF_TYPE_VBI_CAPTURE; + } else { + WARN_ON(1); + return -ENODEV; + } + + dprintk("%d: open called (type=%s)\n", + btv->c.nr, v4l2_type_names[type]); + + /* allocate per filehandle data */ + fh = kmalloc(sizeof(*fh), GFP_KERNEL); + if (unlikely(!fh)) + return -ENOMEM; + file->private_data = fh; + + *fh = btv->init; + + fh->type = type; + fh->ov.setup_ok = 0; + + v4l2_prio_open(&btv->prio, &fh->prio); + + videobuf_queue_sg_init(&fh->cap, &bttv_video_qops, + &btv->c.pci->dev, &btv->s_lock, + V4L2_BUF_TYPE_VIDEO_CAPTURE, + V4L2_FIELD_INTERLACED, + sizeof(struct bttv_buffer), + fh, &btv->lock); + videobuf_queue_sg_init(&fh->vbi, &bttv_vbi_qops, + &btv->c.pci->dev, &btv->s_lock, + V4L2_BUF_TYPE_VBI_CAPTURE, + V4L2_FIELD_SEQ_TB, + sizeof(struct bttv_buffer), + fh, &btv->lock); + set_tvnorm(btv,btv->tvnorm); + set_input(btv, btv->input, btv->tvnorm); + + btv->users++; + + /* The V4L2 spec requires one global set of cropping parameters + which only change on request. These are stored in btv->crop[1]. + However for compatibility with V4L apps and cropping unaware + V4L2 apps we now reset the cropping parameters as seen through + this fh, which is to say VIDIOC_G_CROP and scaling limit checks + will use btv->crop[0], the default cropping parameters for the + current video standard, and VIDIOC_S_FMT will not implicitely + change the cropping parameters until VIDIOC_S_CROP has been + called. */ + fh->do_crop = !reset_crop; /* module parameter */ + + /* Likewise there should be one global set of VBI capture + parameters, but for compatibility with V4L apps and earlier + driver versions each fh has its own parameters. */ + bttv_vbi_fmt_reset(&fh->vbi_fmt, btv->tvnorm); + + bttv_field_count(btv); + return 0; +} + +static int bttv_release(struct file *file) +{ + struct bttv_fh *fh = file->private_data; + struct bttv *btv = fh->btv; + + /* turn off overlay */ + if (check_btres(fh, RESOURCE_OVERLAY)) + bttv_switch_overlay(btv,fh,NULL); + + /* stop video capture */ + if (check_btres(fh, RESOURCE_VIDEO_STREAM)) { + videobuf_streamoff(&fh->cap); + free_btres_lock(btv,fh,RESOURCE_VIDEO_STREAM); + } + if (fh->cap.read_buf) { + buffer_release(&fh->cap,fh->cap.read_buf); + kfree(fh->cap.read_buf); + } + if (check_btres(fh, RESOURCE_VIDEO_READ)) { + free_btres_lock(btv, fh, RESOURCE_VIDEO_READ); + } + + /* stop vbi capture */ + if (check_btres(fh, RESOURCE_VBI)) { + videobuf_stop(&fh->vbi); + free_btres_lock(btv,fh,RESOURCE_VBI); + } + + /* free stuff */ + + videobuf_mmap_free(&fh->cap); + videobuf_mmap_free(&fh->vbi); + v4l2_prio_close(&btv->prio, fh->prio); + file->private_data = NULL; + kfree(fh); + + btv->users--; + bttv_field_count(btv); + + if (!btv->users) + audio_mute(btv, 1); + + return 0; +} + +static int +bttv_mmap(struct file *file, struct vm_area_struct *vma) +{ + struct bttv_fh *fh = file->private_data; + + dprintk("%d: mmap type=%s 0x%lx+%ld\n", + fh->btv->c.nr, v4l2_type_names[fh->type], + vma->vm_start, vma->vm_end - vma->vm_start); + return videobuf_mmap_mapper(bttv_queue(fh),vma); +} + +static const struct v4l2_file_operations bttv_fops = +{ + .owner = THIS_MODULE, + .open = bttv_open, + .release = bttv_release, + .unlocked_ioctl = video_ioctl2, + .read = bttv_read, + .mmap = bttv_mmap, + .poll = bttv_poll, +}; + +static const struct v4l2_ioctl_ops bttv_ioctl_ops = { + .vidioc_querycap = bttv_querycap, + .vidioc_enum_fmt_vid_cap = bttv_enum_fmt_vid_cap, + .vidioc_g_fmt_vid_cap = bttv_g_fmt_vid_cap, + .vidioc_try_fmt_vid_cap = bttv_try_fmt_vid_cap, + .vidioc_s_fmt_vid_cap = bttv_s_fmt_vid_cap, + .vidioc_enum_fmt_vid_overlay = bttv_enum_fmt_vid_overlay, + .vidioc_g_fmt_vid_overlay = bttv_g_fmt_vid_overlay, + .vidioc_try_fmt_vid_overlay = bttv_try_fmt_vid_overlay, + .vidioc_s_fmt_vid_overlay = bttv_s_fmt_vid_overlay, + .vidioc_g_fmt_vbi_cap = bttv_g_fmt_vbi_cap, + .vidioc_try_fmt_vbi_cap = bttv_try_fmt_vbi_cap, + .vidioc_s_fmt_vbi_cap = bttv_s_fmt_vbi_cap, + .vidioc_g_audio = bttv_g_audio, + .vidioc_s_audio = bttv_s_audio, + .vidioc_cropcap = bttv_cropcap, + .vidioc_reqbufs = bttv_reqbufs, + .vidioc_querybuf = bttv_querybuf, + .vidioc_qbuf = bttv_qbuf, + .vidioc_dqbuf = bttv_dqbuf, + .vidioc_s_std = bttv_s_std, + .vidioc_enum_input = bttv_enum_input, + .vidioc_g_input = bttv_g_input, + .vidioc_s_input = bttv_s_input, + .vidioc_queryctrl = bttv_queryctrl, + .vidioc_g_ctrl = bttv_g_ctrl, + .vidioc_s_ctrl = bttv_s_ctrl, + .vidioc_streamon = bttv_streamon, + .vidioc_streamoff = bttv_streamoff, + .vidioc_g_tuner = bttv_g_tuner, + .vidioc_s_tuner = bttv_s_tuner, + .vidioc_g_crop = bttv_g_crop, + .vidioc_s_crop = bttv_s_crop, + .vidioc_g_fbuf = bttv_g_fbuf, + .vidioc_s_fbuf = bttv_s_fbuf, + .vidioc_overlay = bttv_overlay, + .vidioc_g_priority = bttv_g_priority, + .vidioc_s_priority = bttv_s_priority, + .vidioc_g_parm = bttv_g_parm, + .vidioc_g_frequency = bttv_g_frequency, + .vidioc_s_frequency = bttv_s_frequency, + .vidioc_log_status = bttv_log_status, + .vidioc_querystd = bttv_querystd, +#ifdef CONFIG_VIDEO_ADV_DEBUG + .vidioc_g_register = bttv_g_register, + .vidioc_s_register = bttv_s_register, +#endif +}; + +static struct video_device bttv_video_template = { + .fops = &bttv_fops, + .ioctl_ops = &bttv_ioctl_ops, + .tvnorms = BTTV_NORMS, + .current_norm = V4L2_STD_PAL, +}; + +/* ----------------------------------------------------------------------- */ +/* radio interface */ + +static int radio_open(struct file *file) +{ + struct video_device *vdev = video_devdata(file); + struct bttv *btv = video_drvdata(file); + struct bttv_fh *fh; + + dprintk("open dev=%s\n", video_device_node_name(vdev)); + + dprintk("%d: open called (radio)\n", btv->c.nr); + + /* allocate per filehandle data */ + fh = kmalloc(sizeof(*fh), GFP_KERNEL); + if (unlikely(!fh)) + return -ENOMEM; + file->private_data = fh; + *fh = btv->init; + + v4l2_prio_open(&btv->prio, &fh->prio); + + btv->radio_user++; + + bttv_call_all(btv, tuner, s_radio); + audio_input(btv,TVAUDIO_INPUT_RADIO); + + return 0; +} + +static int radio_release(struct file *file) +{ + struct bttv_fh *fh = file->private_data; + struct bttv *btv = fh->btv; + struct saa6588_command cmd; + + v4l2_prio_close(&btv->prio, fh->prio); + file->private_data = NULL; + kfree(fh); + + btv->radio_user--; + + bttv_call_all(btv, core, ioctl, SAA6588_CMD_CLOSE, &cmd); + + return 0; +} + +static int radio_querycap(struct file *file, void *priv, + struct v4l2_capability *cap) +{ + struct bttv_fh *fh = priv; + struct bttv *btv = fh->btv; + + strcpy(cap->driver, "bttv"); + strlcpy(cap->card, btv->radio_dev->name, sizeof(cap->card)); + sprintf(cap->bus_info, "PCI:%s", pci_name(btv->c.pci)); + cap->capabilities = V4L2_CAP_TUNER; + + return 0; +} + +static int radio_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t) +{ + struct bttv_fh *fh = priv; + struct bttv *btv = fh->btv; + + if (btv->tuner_type == TUNER_ABSENT) + return -EINVAL; + if (0 != t->index) + return -EINVAL; + strcpy(t->name, "Radio"); + t->type = V4L2_TUNER_RADIO; + + bttv_call_all(btv, tuner, g_tuner, t); + + if (btv->audio_mode_gpio) + btv->audio_mode_gpio(btv, t, 0); + + return 0; +} + +static int radio_enum_input(struct file *file, void *priv, + struct v4l2_input *i) +{ + if (i->index != 0) + return -EINVAL; + + strcpy(i->name, "Radio"); + i->type = V4L2_INPUT_TYPE_TUNER; + + return 0; +} + +static int radio_g_audio(struct file *file, void *priv, + struct v4l2_audio *a) +{ + if (unlikely(a->index)) + return -EINVAL; + + strcpy(a->name, "Radio"); + + return 0; +} + +static int radio_s_tuner(struct file *file, void *priv, + struct v4l2_tuner *t) +{ + struct bttv_fh *fh = priv; + struct bttv *btv = fh->btv; + + if (0 != t->index) + return -EINVAL; + + bttv_call_all(btv, tuner, s_tuner, t); + return 0; +} + +static int radio_s_audio(struct file *file, void *priv, + const struct v4l2_audio *a) +{ + if (unlikely(a->index)) + return -EINVAL; + + return 0; +} + +static int radio_s_input(struct file *filp, void *priv, unsigned int i) +{ + if (unlikely(i)) + return -EINVAL; + + return 0; +} + +static int radio_s_std(struct file *file, void *fh, v4l2_std_id *norm) +{ + return 0; +} + +static int radio_queryctrl(struct file *file, void *priv, + struct v4l2_queryctrl *c) +{ + const struct v4l2_queryctrl *ctrl; + + if (c->id < V4L2_CID_BASE || + c->id >= V4L2_CID_LASTP1) + return -EINVAL; + + if (c->id == V4L2_CID_AUDIO_MUTE) { + ctrl = ctrl_by_id(c->id); + *c = *ctrl; + } else + *c = no_ctl; + + return 0; +} + +static int radio_g_input(struct file *filp, void *priv, unsigned int *i) +{ + *i = 0; + return 0; +} + +static ssize_t radio_read(struct file *file, char __user *data, + size_t count, loff_t *ppos) +{ + struct bttv_fh *fh = file->private_data; + struct bttv *btv = fh->btv; + struct saa6588_command cmd; + cmd.block_count = count/3; + cmd.buffer = data; + cmd.instance = file; + cmd.result = -ENODEV; + + bttv_call_all(btv, core, ioctl, SAA6588_CMD_READ, &cmd); + + return cmd.result; +} + +static unsigned int radio_poll(struct file *file, poll_table *wait) +{ + struct bttv_fh *fh = file->private_data; + struct bttv *btv = fh->btv; + struct saa6588_command cmd; + cmd.instance = file; + cmd.event_list = wait; + cmd.result = -ENODEV; + bttv_call_all(btv, core, ioctl, SAA6588_CMD_POLL, &cmd); + + return cmd.result; +} + +static const struct v4l2_file_operations radio_fops = +{ + .owner = THIS_MODULE, + .open = radio_open, + .read = radio_read, + .release = radio_release, + .unlocked_ioctl = video_ioctl2, + .poll = radio_poll, +}; + +static const struct v4l2_ioctl_ops radio_ioctl_ops = { + .vidioc_querycap = radio_querycap, + .vidioc_g_tuner = radio_g_tuner, + .vidioc_enum_input = radio_enum_input, + .vidioc_g_audio = radio_g_audio, + .vidioc_s_tuner = radio_s_tuner, + .vidioc_s_audio = radio_s_audio, + .vidioc_s_input = radio_s_input, + .vidioc_s_std = radio_s_std, + .vidioc_queryctrl = radio_queryctrl, + .vidioc_g_input = radio_g_input, + .vidioc_g_ctrl = bttv_g_ctrl, + .vidioc_s_ctrl = bttv_s_ctrl, + .vidioc_g_frequency = bttv_g_frequency, + .vidioc_s_frequency = bttv_s_frequency, +}; + +static struct video_device radio_template = { + .fops = &radio_fops, + .ioctl_ops = &radio_ioctl_ops, +}; + +/* ----------------------------------------------------------------------- */ +/* some debug code */ + +static int bttv_risc_decode(u32 risc) +{ + static char *instr[16] = { + [ BT848_RISC_WRITE >> 28 ] = "write", + [ BT848_RISC_SKIP >> 28 ] = "skip", + [ BT848_RISC_WRITEC >> 28 ] = "writec", + [ BT848_RISC_JUMP >> 28 ] = "jump", + [ BT848_RISC_SYNC >> 28 ] = "sync", + [ BT848_RISC_WRITE123 >> 28 ] = "write123", + [ BT848_RISC_SKIP123 >> 28 ] = "skip123", + [ BT848_RISC_WRITE1S23 >> 28 ] = "write1s23", + }; + static int incr[16] = { + [ BT848_RISC_WRITE >> 28 ] = 2, + [ BT848_RISC_JUMP >> 28 ] = 2, + [ BT848_RISC_SYNC >> 28 ] = 2, + [ BT848_RISC_WRITE123 >> 28 ] = 5, + [ BT848_RISC_SKIP123 >> 28 ] = 2, + [ BT848_RISC_WRITE1S23 >> 28 ] = 3, + }; + static char *bits[] = { + "be0", "be1", "be2", "be3/resync", + "set0", "set1", "set2", "set3", + "clr0", "clr1", "clr2", "clr3", + "irq", "res", "eol", "sol", + }; + int i; + + pr_cont("0x%08x [ %s", risc, + instr[risc >> 28] ? instr[risc >> 28] : "INVALID"); + for (i = ARRAY_SIZE(bits)-1; i >= 0; i--) + if (risc & (1 << (i + 12))) + pr_cont(" %s", bits[i]); + pr_cont(" count=%d ]\n", risc & 0xfff); + return incr[risc >> 28] ? incr[risc >> 28] : 1; +} + +static void bttv_risc_disasm(struct bttv *btv, + struct btcx_riscmem *risc) +{ + unsigned int i,j,n; + + pr_info("%s: risc disasm: %p [dma=0x%08lx]\n", + btv->c.v4l2_dev.name, risc->cpu, (unsigned long)risc->dma); + for (i = 0; i < (risc->size >> 2); i += n) { + pr_info("%s: 0x%lx: ", + btv->c.v4l2_dev.name, + (unsigned long)(risc->dma + (i<<2))); + n = bttv_risc_decode(le32_to_cpu(risc->cpu[i])); + for (j = 1; j < n; j++) + pr_info("%s: 0x%lx: 0x%08x [ arg #%d ]\n", + btv->c.v4l2_dev.name, + (unsigned long)(risc->dma + ((i+j)<<2)), + risc->cpu[i+j], j); + if (0 == risc->cpu[i]) + break; + } +} + +static void bttv_print_riscaddr(struct bttv *btv) +{ + pr_info(" main: %08llx\n", (unsigned long long)btv->main.dma); + pr_info(" vbi : o=%08llx e=%08llx\n", + btv->cvbi ? (unsigned long long)btv->cvbi->top.dma : 0, + btv->cvbi ? (unsigned long long)btv->cvbi->bottom.dma : 0); + pr_info(" cap : o=%08llx e=%08llx\n", + btv->curr.top + ? (unsigned long long)btv->curr.top->top.dma : 0, + btv->curr.bottom + ? (unsigned long long)btv->curr.bottom->bottom.dma : 0); + pr_info(" scr : o=%08llx e=%08llx\n", + btv->screen ? (unsigned long long)btv->screen->top.dma : 0, + btv->screen ? (unsigned long long)btv->screen->bottom.dma : 0); + bttv_risc_disasm(btv, &btv->main); +} + +/* ----------------------------------------------------------------------- */ +/* irq handler */ + +static char *irq_name[] = { + "FMTCHG", // format change detected (525 vs. 625) + "VSYNC", // vertical sync (new field) + "HSYNC", // horizontal sync + "OFLOW", // chroma/luma AGC overflow + "HLOCK", // horizontal lock changed + "VPRES", // video presence changed + "6", "7", + "I2CDONE", // hw irc operation finished + "GPINT", // gpio port triggered irq + "10", + "RISCI", // risc instruction triggered irq + "FBUS", // pixel data fifo dropped data (high pci bus latencies) + "FTRGT", // pixel data fifo overrun + "FDSR", // fifo data stream resyncronisation + "PPERR", // parity error (data transfer) + "RIPERR", // parity error (read risc instructions) + "PABORT", // pci abort + "OCERR", // risc instruction error + "SCERR", // syncronisation error +}; + +static void bttv_print_irqbits(u32 print, u32 mark) +{ + unsigned int i; + + pr_cont("bits:"); + for (i = 0; i < ARRAY_SIZE(irq_name); i++) { + if (print & (1 << i)) + pr_cont(" %s", irq_name[i]); + if (mark & (1 << i)) + pr_cont("*"); + } +} + +static void bttv_irq_debug_low_latency(struct bttv *btv, u32 rc) +{ + pr_warn("%d: irq: skipped frame [main=%lx,o_vbi=%lx,o_field=%lx,rc=%lx]\n", + btv->c.nr, + (unsigned long)btv->main.dma, + (unsigned long)le32_to_cpu(btv->main.cpu[RISC_SLOT_O_VBI+1]), + (unsigned long)le32_to_cpu(btv->main.cpu[RISC_SLOT_O_FIELD+1]), + (unsigned long)rc); + + if (0 == (btread(BT848_DSTATUS) & BT848_DSTATUS_HLOC)) { + pr_notice("%d: Oh, there (temporarily?) is no input signal. " + "Ok, then this is harmless, don't worry ;)\n", + btv->c.nr); + return; + } + pr_notice("%d: Uhm. Looks like we have unusual high IRQ latencies\n", + btv->c.nr); + pr_notice("%d: Lets try to catch the culpit red-handed ...\n", + btv->c.nr); + dump_stack(); +} + +static int +bttv_irq_next_video(struct bttv *btv, struct bttv_buffer_set *set) +{ + struct bttv_buffer *item; + + memset(set,0,sizeof(*set)); + + /* capture request ? */ + if (!list_empty(&btv->capture)) { + set->frame_irq = 1; + item = list_entry(btv->capture.next, struct bttv_buffer, vb.queue); + if (V4L2_FIELD_HAS_TOP(item->vb.field)) + set->top = item; + if (V4L2_FIELD_HAS_BOTTOM(item->vb.field)) + set->bottom = item; + + /* capture request for other field ? */ + if (!V4L2_FIELD_HAS_BOTH(item->vb.field) && + (item->vb.queue.next != &btv->capture)) { + item = list_entry(item->vb.queue.next, struct bttv_buffer, vb.queue); + /* Mike Isely <isely@pobox.com> - Only check + * and set up the bottom field in the logic + * below. Don't ever do the top field. This + * of course means that if we set up the + * bottom field in the above code that we'll + * actually skip a field. But that's OK. + * Having processed only a single buffer this + * time, then the next time around the first + * available buffer should be for a top field. + * That will then cause us here to set up a + * top then a bottom field in the normal way. + * The alternative to this understanding is + * that we set up the second available buffer + * as a top field, but that's out of order + * since this driver always processes the top + * field first - the effect will be the two + * buffers being returned in the wrong order, + * with the second buffer also being delayed + * by one field time (owing to the fifo nature + * of videobuf). Worse still, we'll be stuck + * doing fields out of order now every time + * until something else causes a field to be + * dropped. By effectively forcing a field to + * drop this way then we always get back into + * sync within a single frame time. (Out of + * order fields can screw up deinterlacing + * algorithms.) */ + if (!V4L2_FIELD_HAS_BOTH(item->vb.field)) { + if (NULL == set->bottom && + V4L2_FIELD_BOTTOM == item->vb.field) { + set->bottom = item; + } + if (NULL != set->top && NULL != set->bottom) + set->top_irq = 2; + } + } + } + + /* screen overlay ? */ + if (NULL != btv->screen) { + if (V4L2_FIELD_HAS_BOTH(btv->screen->vb.field)) { + if (NULL == set->top && NULL == set->bottom) { + set->top = btv->screen; + set->bottom = btv->screen; + } + } else { + if (V4L2_FIELD_TOP == btv->screen->vb.field && + NULL == set->top) { + set->top = btv->screen; + } + if (V4L2_FIELD_BOTTOM == btv->screen->vb.field && + NULL == set->bottom) { + set->bottom = btv->screen; + } + } + } + + dprintk("%d: next set: top=%p bottom=%p [screen=%p,irq=%d,%d]\n", + btv->c.nr, set->top, set->bottom, + btv->screen, set->frame_irq, set->top_irq); + return 0; +} + +static void +bttv_irq_wakeup_video(struct bttv *btv, struct bttv_buffer_set *wakeup, + struct bttv_buffer_set *curr, unsigned int state) +{ + struct timeval ts; + + do_gettimeofday(&ts); + + if (wakeup->top == wakeup->bottom) { + if (NULL != wakeup->top && curr->top != wakeup->top) { + if (irq_debug > 1) + pr_debug("%d: wakeup: both=%p\n", + btv->c.nr, wakeup->top); + wakeup->top->vb.ts = ts; + wakeup->top->vb.field_count = btv->field_count; + wakeup->top->vb.state = state; + wake_up(&wakeup->top->vb.done); + } + } else { + if (NULL != wakeup->top && curr->top != wakeup->top) { + if (irq_debug > 1) + pr_debug("%d: wakeup: top=%p\n", + btv->c.nr, wakeup->top); + wakeup->top->vb.ts = ts; + wakeup->top->vb.field_count = btv->field_count; + wakeup->top->vb.state = state; + wake_up(&wakeup->top->vb.done); + } + if (NULL != wakeup->bottom && curr->bottom != wakeup->bottom) { + if (irq_debug > 1) + pr_debug("%d: wakeup: bottom=%p\n", + btv->c.nr, wakeup->bottom); + wakeup->bottom->vb.ts = ts; + wakeup->bottom->vb.field_count = btv->field_count; + wakeup->bottom->vb.state = state; + wake_up(&wakeup->bottom->vb.done); + } + } +} + +static void +bttv_irq_wakeup_vbi(struct bttv *btv, struct bttv_buffer *wakeup, + unsigned int state) +{ + struct timeval ts; + + if (NULL == wakeup) + return; + + do_gettimeofday(&ts); + wakeup->vb.ts = ts; + wakeup->vb.field_count = btv->field_count; + wakeup->vb.state = state; + wake_up(&wakeup->vb.done); +} + +static void bttv_irq_timeout(unsigned long data) +{ + struct bttv *btv = (struct bttv *)data; + struct bttv_buffer_set old,new; + struct bttv_buffer *ovbi; + struct bttv_buffer *item; + unsigned long flags; + + if (bttv_verbose) { + pr_info("%d: timeout: drop=%d irq=%d/%d, risc=%08x, ", + btv->c.nr, btv->framedrop, btv->irq_me, btv->irq_total, + btread(BT848_RISC_COUNT)); + bttv_print_irqbits(btread(BT848_INT_STAT),0); + pr_cont("\n"); + } + + spin_lock_irqsave(&btv->s_lock,flags); + + /* deactivate stuff */ + memset(&new,0,sizeof(new)); + old = btv->curr; + ovbi = btv->cvbi; + btv->curr = new; + btv->cvbi = NULL; + btv->loop_irq = 0; + bttv_buffer_activate_video(btv, &new); + bttv_buffer_activate_vbi(btv, NULL); + bttv_set_dma(btv, 0); + + /* wake up */ + bttv_irq_wakeup_video(btv, &old, &new, VIDEOBUF_ERROR); + bttv_irq_wakeup_vbi(btv, ovbi, VIDEOBUF_ERROR); + + /* cancel all outstanding capture / vbi requests */ + while (!list_empty(&btv->capture)) { + item = list_entry(btv->capture.next, struct bttv_buffer, vb.queue); + list_del(&item->vb.queue); + item->vb.state = VIDEOBUF_ERROR; + wake_up(&item->vb.done); + } + while (!list_empty(&btv->vcapture)) { + item = list_entry(btv->vcapture.next, struct bttv_buffer, vb.queue); + list_del(&item->vb.queue); + item->vb.state = VIDEOBUF_ERROR; + wake_up(&item->vb.done); + } + + btv->errors++; + spin_unlock_irqrestore(&btv->s_lock,flags); +} + +static void +bttv_irq_wakeup_top(struct bttv *btv) +{ + struct bttv_buffer *wakeup = btv->curr.top; + + if (NULL == wakeup) + return; + + spin_lock(&btv->s_lock); + btv->curr.top_irq = 0; + btv->curr.top = NULL; + bttv_risc_hook(btv, RISC_SLOT_O_FIELD, NULL, 0); + + do_gettimeofday(&wakeup->vb.ts); + wakeup->vb.field_count = btv->field_count; + wakeup->vb.state = VIDEOBUF_DONE; + wake_up(&wakeup->vb.done); + spin_unlock(&btv->s_lock); +} + +static inline int is_active(struct btcx_riscmem *risc, u32 rc) +{ + if (rc < risc->dma) + return 0; + if (rc > risc->dma + risc->size) + return 0; + return 1; +} + +static void +bttv_irq_switch_video(struct bttv *btv) +{ + struct bttv_buffer_set new; + struct bttv_buffer_set old; + dma_addr_t rc; + + spin_lock(&btv->s_lock); + + /* new buffer set */ + bttv_irq_next_video(btv, &new); + rc = btread(BT848_RISC_COUNT); + if ((btv->curr.top && is_active(&btv->curr.top->top, rc)) || + (btv->curr.bottom && is_active(&btv->curr.bottom->bottom, rc))) { + btv->framedrop++; + if (debug_latency) + bttv_irq_debug_low_latency(btv, rc); + spin_unlock(&btv->s_lock); + return; + } + + /* switch over */ + old = btv->curr; + btv->curr = new; + btv->loop_irq &= ~1; + bttv_buffer_activate_video(btv, &new); + bttv_set_dma(btv, 0); + + /* switch input */ + if (UNSET != btv->new_input) { + video_mux(btv,btv->new_input); + btv->new_input = UNSET; + } + + /* wake up finished buffers */ + bttv_irq_wakeup_video(btv, &old, &new, VIDEOBUF_DONE); + spin_unlock(&btv->s_lock); +} + +static void +bttv_irq_switch_vbi(struct bttv *btv) +{ + struct bttv_buffer *new = NULL; + struct bttv_buffer *old; + u32 rc; + + spin_lock(&btv->s_lock); + + if (!list_empty(&btv->vcapture)) + new = list_entry(btv->vcapture.next, struct bttv_buffer, vb.queue); + old = btv->cvbi; + + rc = btread(BT848_RISC_COUNT); + if (NULL != old && (is_active(&old->top, rc) || + is_active(&old->bottom, rc))) { + btv->framedrop++; + if (debug_latency) + bttv_irq_debug_low_latency(btv, rc); + spin_unlock(&btv->s_lock); + return; + } + + /* switch */ + btv->cvbi = new; + btv->loop_irq &= ~4; + bttv_buffer_activate_vbi(btv, new); + bttv_set_dma(btv, 0); + + bttv_irq_wakeup_vbi(btv, old, VIDEOBUF_DONE); + spin_unlock(&btv->s_lock); +} + +static irqreturn_t bttv_irq(int irq, void *dev_id) +{ + u32 stat,astat; + u32 dstat; + int count; + struct bttv *btv; + int handled = 0; + + btv=(struct bttv *)dev_id; + + count=0; + while (1) { + /* get/clear interrupt status bits */ + stat=btread(BT848_INT_STAT); + astat=stat&btread(BT848_INT_MASK); + if (!astat) + break; + handled = 1; + btwrite(stat,BT848_INT_STAT); + + /* get device status bits */ + dstat=btread(BT848_DSTATUS); + + if (irq_debug) { + pr_debug("%d: irq loop=%d fc=%d riscs=%x, riscc=%08x, ", + btv->c.nr, count, btv->field_count, + stat>>28, btread(BT848_RISC_COUNT)); + bttv_print_irqbits(stat,astat); + if (stat & BT848_INT_HLOCK) + pr_cont(" HLOC => %s", + dstat & BT848_DSTATUS_HLOC + ? "yes" : "no"); + if (stat & BT848_INT_VPRES) + pr_cont(" PRES => %s", + dstat & BT848_DSTATUS_PRES + ? "yes" : "no"); + if (stat & BT848_INT_FMTCHG) + pr_cont(" NUML => %s", + dstat & BT848_DSTATUS_NUML + ? "625" : "525"); + pr_cont("\n"); + } + + if (astat&BT848_INT_VSYNC) + btv->field_count++; + + if ((astat & BT848_INT_GPINT) && btv->remote) { + bttv_input_irq(btv); + } + + if (astat & BT848_INT_I2CDONE) { + btv->i2c_done = stat; + wake_up(&btv->i2c_queue); + } + + if ((astat & BT848_INT_RISCI) && (stat & (4<<28))) + bttv_irq_switch_vbi(btv); + + if ((astat & BT848_INT_RISCI) && (stat & (2<<28))) + bttv_irq_wakeup_top(btv); + + if ((astat & BT848_INT_RISCI) && (stat & (1<<28))) + bttv_irq_switch_video(btv); + + if ((astat & BT848_INT_HLOCK) && btv->opt_automute) + audio_mute(btv, btv->mute); /* trigger automute */ + + if (astat & (BT848_INT_SCERR|BT848_INT_OCERR)) { + pr_info("%d: %s%s @ %08x,", + btv->c.nr, + (astat & BT848_INT_SCERR) ? "SCERR" : "", + (astat & BT848_INT_OCERR) ? "OCERR" : "", + btread(BT848_RISC_COUNT)); + bttv_print_irqbits(stat,astat); + pr_cont("\n"); + if (bttv_debug) + bttv_print_riscaddr(btv); + } + if (fdsr && astat & BT848_INT_FDSR) { + pr_info("%d: FDSR @ %08x\n", + btv->c.nr, btread(BT848_RISC_COUNT)); + if (bttv_debug) + bttv_print_riscaddr(btv); + } + + count++; + if (count > 4) { + + if (count > 8 || !(astat & BT848_INT_GPINT)) { + btwrite(0, BT848_INT_MASK); + + pr_err("%d: IRQ lockup, cleared int mask [", + btv->c.nr); + } else { + pr_err("%d: IRQ lockup, clearing GPINT from int mask [", + btv->c.nr); + + btwrite(btread(BT848_INT_MASK) & (-1 ^ BT848_INT_GPINT), + BT848_INT_MASK); + }; + + bttv_print_irqbits(stat,astat); + + pr_cont("]\n"); + } + } + btv->irq_total++; + if (handled) + btv->irq_me++; + return IRQ_RETVAL(handled); +} + + +/* ----------------------------------------------------------------------- */ +/* initialitation */ + +static struct video_device *vdev_init(struct bttv *btv, + const struct video_device *template, + const char *type_name) +{ + struct video_device *vfd; + + vfd = video_device_alloc(); + if (NULL == vfd) + return NULL; + *vfd = *template; + vfd->v4l2_dev = &btv->c.v4l2_dev; + vfd->release = video_device_release; + vfd->debug = bttv_debug; + video_set_drvdata(vfd, btv); + snprintf(vfd->name, sizeof(vfd->name), "BT%d%s %s (%s)", + btv->id, (btv->id==848 && btv->revision==0x12) ? "A" : "", + type_name, bttv_tvcards[btv->c.type].name); + return vfd; +} + +static void bttv_unregister_video(struct bttv *btv) +{ + if (btv->video_dev) { + if (video_is_registered(btv->video_dev)) + video_unregister_device(btv->video_dev); + else + video_device_release(btv->video_dev); + btv->video_dev = NULL; + } + if (btv->vbi_dev) { + if (video_is_registered(btv->vbi_dev)) + video_unregister_device(btv->vbi_dev); + else + video_device_release(btv->vbi_dev); + btv->vbi_dev = NULL; + } + if (btv->radio_dev) { + if (video_is_registered(btv->radio_dev)) + video_unregister_device(btv->radio_dev); + else + video_device_release(btv->radio_dev); + btv->radio_dev = NULL; + } +} + +/* register video4linux devices */ +static int __devinit bttv_register_video(struct bttv *btv) +{ + if (no_overlay > 0) + pr_notice("Overlay support disabled\n"); + + /* video */ + btv->video_dev = vdev_init(btv, &bttv_video_template, "video"); + + if (NULL == btv->video_dev) + goto err; + if (video_register_device(btv->video_dev, VFL_TYPE_GRABBER, + video_nr[btv->c.nr]) < 0) + goto err; + pr_info("%d: registered device %s\n", + btv->c.nr, video_device_node_name(btv->video_dev)); + if (device_create_file(&btv->video_dev->dev, + &dev_attr_card)<0) { + pr_err("%d: device_create_file 'card' failed\n", btv->c.nr); + goto err; + } + + /* vbi */ + btv->vbi_dev = vdev_init(btv, &bttv_video_template, "vbi"); + + if (NULL == btv->vbi_dev) + goto err; + if (video_register_device(btv->vbi_dev, VFL_TYPE_VBI, + vbi_nr[btv->c.nr]) < 0) + goto err; + pr_info("%d: registered device %s\n", + btv->c.nr, video_device_node_name(btv->vbi_dev)); + + if (!btv->has_radio) + return 0; + /* radio */ + btv->radio_dev = vdev_init(btv, &radio_template, "radio"); + if (NULL == btv->radio_dev) + goto err; + if (video_register_device(btv->radio_dev, VFL_TYPE_RADIO, + radio_nr[btv->c.nr]) < 0) + goto err; + pr_info("%d: registered device %s\n", + btv->c.nr, video_device_node_name(btv->radio_dev)); + + /* all done */ + return 0; + + err: + bttv_unregister_video(btv); + return -1; +} + + +/* on OpenFirmware machines (PowerMac at least), PCI memory cycle */ +/* response on cards with no firmware is not enabled by OF */ +static void pci_set_command(struct pci_dev *dev) +{ +#if defined(__powerpc__) + unsigned int cmd; + + pci_read_config_dword(dev, PCI_COMMAND, &cmd); + cmd = (cmd | PCI_COMMAND_MEMORY ); + pci_write_config_dword(dev, PCI_COMMAND, cmd); +#endif +} + +static int __devinit bttv_probe(struct pci_dev *dev, + const struct pci_device_id *pci_id) +{ + int result; + unsigned char lat; + struct bttv *btv; + + if (bttv_num == BTTV_MAX) + return -ENOMEM; + pr_info("Bt8xx card found (%d)\n", bttv_num); + bttvs[bttv_num] = btv = kzalloc(sizeof(*btv), GFP_KERNEL); + if (btv == NULL) { + pr_err("out of memory\n"); + return -ENOMEM; + } + btv->c.nr = bttv_num; + snprintf(btv->c.v4l2_dev.name, sizeof(btv->c.v4l2_dev.name), + "bttv%d", btv->c.nr); + + /* initialize structs / fill in defaults */ + mutex_init(&btv->lock); + spin_lock_init(&btv->s_lock); + spin_lock_init(&btv->gpio_lock); + init_waitqueue_head(&btv->i2c_queue); + INIT_LIST_HEAD(&btv->c.subs); + INIT_LIST_HEAD(&btv->capture); + INIT_LIST_HEAD(&btv->vcapture); + v4l2_prio_init(&btv->prio); + + init_timer(&btv->timeout); + btv->timeout.function = bttv_irq_timeout; + btv->timeout.data = (unsigned long)btv; + + btv->i2c_rc = -1; + btv->tuner_type = UNSET; + btv->new_input = UNSET; + btv->has_radio=radio[btv->c.nr]; + + /* pci stuff (init, get irq/mmio, ... */ + btv->c.pci = dev; + btv->id = dev->device; + if (pci_enable_device(dev)) { + pr_warn("%d: Can't enable device\n", btv->c.nr); + return -EIO; + } + if (pci_set_dma_mask(dev, DMA_BIT_MASK(32))) { + pr_warn("%d: No suitable DMA available\n", btv->c.nr); + return -EIO; + } + if (!request_mem_region(pci_resource_start(dev,0), + pci_resource_len(dev,0), + btv->c.v4l2_dev.name)) { + pr_warn("%d: can't request iomem (0x%llx)\n", + btv->c.nr, + (unsigned long long)pci_resource_start(dev, 0)); + return -EBUSY; + } + pci_set_master(dev); + pci_set_command(dev); + + result = v4l2_device_register(&dev->dev, &btv->c.v4l2_dev); + if (result < 0) { + pr_warn("%d: v4l2_device_register() failed\n", btv->c.nr); + goto fail0; + } + + btv->revision = dev->revision; + pci_read_config_byte(dev, PCI_LATENCY_TIMER, &lat); + pr_info("%d: Bt%d (rev %d) at %s, irq: %d, latency: %d, mmio: 0x%llx\n", + bttv_num, btv->id, btv->revision, pci_name(dev), + btv->c.pci->irq, lat, + (unsigned long long)pci_resource_start(dev, 0)); + schedule(); + + btv->bt848_mmio = ioremap(pci_resource_start(dev, 0), 0x1000); + if (NULL == btv->bt848_mmio) { + pr_err("%d: ioremap() failed\n", btv->c.nr); + result = -EIO; + goto fail1; + } + + /* identify card */ + bttv_idcard(btv); + + /* disable irqs, register irq handler */ + btwrite(0, BT848_INT_MASK); + result = request_irq(btv->c.pci->irq, bttv_irq, + IRQF_SHARED | IRQF_DISABLED, btv->c.v4l2_dev.name, (void *)btv); + if (result < 0) { + pr_err("%d: can't get IRQ %d\n", + bttv_num, btv->c.pci->irq); + goto fail1; + } + + if (0 != bttv_handle_chipset(btv)) { + result = -EIO; + goto fail2; + } + + /* init options from insmod args */ + btv->opt_combfilter = combfilter; + btv->opt_lumafilter = lumafilter; + btv->opt_automute = automute; + btv->opt_chroma_agc = chroma_agc; + btv->opt_adc_crush = adc_crush; + btv->opt_vcr_hack = vcr_hack; + btv->opt_whitecrush_upper = whitecrush_upper; + btv->opt_whitecrush_lower = whitecrush_lower; + btv->opt_uv_ratio = uv_ratio; + btv->opt_full_luma_range = full_luma_range; + btv->opt_coring = coring; + + /* fill struct bttv with some useful defaults */ + btv->init.btv = btv; + btv->init.ov.w.width = 320; + btv->init.ov.w.height = 240; + btv->init.fmt = format_by_fourcc(V4L2_PIX_FMT_BGR24); + btv->init.width = 320; + btv->init.height = 240; + btv->input = 0; + + /* initialize hardware */ + if (bttv_gpio) + bttv_gpio_tracking(btv,"pre-init"); + + bttv_risc_init_main(btv); + init_bt848(btv); + + /* gpio */ + btwrite(0x00, BT848_GPIO_REG_INP); + btwrite(0x00, BT848_GPIO_OUT_EN); + if (bttv_verbose) + bttv_gpio_tracking(btv,"init"); + + /* needs to be done before i2c is registered */ + bttv_init_card1(btv); + + /* register i2c + gpio */ + init_bttv_i2c(btv); + + /* some card-specific stuff (needs working i2c) */ + bttv_init_card2(btv); + bttv_init_tuner(btv); + init_irqreg(btv); + + /* register video4linux + input */ + if (!bttv_tvcards[btv->c.type].no_video) { + bttv_register_video(btv); + bt848_bright(btv,32768); + bt848_contrast(btv, 27648); + bt848_hue(btv,32768); + bt848_sat(btv,32768); + audio_mute(btv, 1); + set_input(btv, 0, btv->tvnorm); + bttv_crop_reset(&btv->crop[0], btv->tvnorm); + btv->crop[1] = btv->crop[0]; /* current = default */ + disclaim_vbi_lines(btv); + disclaim_video_lines(btv); + } + + /* add subdevices and autoload dvb-bt8xx if needed */ + if (bttv_tvcards[btv->c.type].has_dvb) { + bttv_sub_add_device(&btv->c, "dvb"); + request_modules(btv); + } + + if (!disable_ir) { + init_bttv_i2c_ir(btv); + bttv_input_init(btv); + } + + /* everything is fine */ + bttv_num++; + return 0; + +fail2: + free_irq(btv->c.pci->irq,btv); + +fail1: + v4l2_device_unregister(&btv->c.v4l2_dev); + +fail0: + if (btv->bt848_mmio) + iounmap(btv->bt848_mmio); + release_mem_region(pci_resource_start(btv->c.pci,0), + pci_resource_len(btv->c.pci,0)); + return result; +} + +static void __devexit bttv_remove(struct pci_dev *pci_dev) +{ + struct v4l2_device *v4l2_dev = pci_get_drvdata(pci_dev); + struct bttv *btv = to_bttv(v4l2_dev); + + if (bttv_verbose) + pr_info("%d: unloading\n", btv->c.nr); + + if (bttv_tvcards[btv->c.type].has_dvb) + flush_request_modules(btv); + + /* shutdown everything (DMA+IRQs) */ + btand(~15, BT848_GPIO_DMA_CTL); + btwrite(0, BT848_INT_MASK); + btwrite(~0x0, BT848_INT_STAT); + btwrite(0x0, BT848_GPIO_OUT_EN); + if (bttv_gpio) + bttv_gpio_tracking(btv,"cleanup"); + + /* tell gpio modules we are leaving ... */ + btv->shutdown=1; + bttv_input_fini(btv); + bttv_sub_del_devices(&btv->c); + + /* unregister i2c_bus + input */ + fini_bttv_i2c(btv); + + /* unregister video4linux */ + bttv_unregister_video(btv); + + /* free allocated memory */ + btcx_riscmem_free(btv->c.pci,&btv->main); + + /* free ressources */ + free_irq(btv->c.pci->irq,btv); + iounmap(btv->bt848_mmio); + release_mem_region(pci_resource_start(btv->c.pci,0), + pci_resource_len(btv->c.pci,0)); + + v4l2_device_unregister(&btv->c.v4l2_dev); + bttvs[btv->c.nr] = NULL; + kfree(btv); + + return; +} + +#ifdef CONFIG_PM +static int bttv_suspend(struct pci_dev *pci_dev, pm_message_t state) +{ + struct v4l2_device *v4l2_dev = pci_get_drvdata(pci_dev); + struct bttv *btv = to_bttv(v4l2_dev); + struct bttv_buffer_set idle; + unsigned long flags; + + dprintk("%d: suspend %d\n", btv->c.nr, state.event); + + /* stop dma + irqs */ + spin_lock_irqsave(&btv->s_lock,flags); + memset(&idle, 0, sizeof(idle)); + btv->state.video = btv->curr; + btv->state.vbi = btv->cvbi; + btv->state.loop_irq = btv->loop_irq; + btv->curr = idle; + btv->loop_irq = 0; + bttv_buffer_activate_video(btv, &idle); + bttv_buffer_activate_vbi(btv, NULL); + bttv_set_dma(btv, 0); + btwrite(0, BT848_INT_MASK); + spin_unlock_irqrestore(&btv->s_lock,flags); + + /* save bt878 state */ + btv->state.gpio_enable = btread(BT848_GPIO_OUT_EN); + btv->state.gpio_data = gpio_read(); + + /* save pci state */ + pci_save_state(pci_dev); + if (0 != pci_set_power_state(pci_dev, pci_choose_state(pci_dev, state))) { + pci_disable_device(pci_dev); + btv->state.disabled = 1; + } + return 0; +} + +static int bttv_resume(struct pci_dev *pci_dev) +{ + struct v4l2_device *v4l2_dev = pci_get_drvdata(pci_dev); + struct bttv *btv = to_bttv(v4l2_dev); + unsigned long flags; + int err; + + dprintk("%d: resume\n", btv->c.nr); + + /* restore pci state */ + if (btv->state.disabled) { + err=pci_enable_device(pci_dev); + if (err) { + pr_warn("%d: Can't enable device\n", btv->c.nr); + return err; + } + btv->state.disabled = 0; + } + err=pci_set_power_state(pci_dev, PCI_D0); + if (err) { + pci_disable_device(pci_dev); + pr_warn("%d: Can't enable device\n", btv->c.nr); + btv->state.disabled = 1; + return err; + } + + pci_restore_state(pci_dev); + + /* restore bt878 state */ + bttv_reinit_bt848(btv); + gpio_inout(0xffffff, btv->state.gpio_enable); + gpio_write(btv->state.gpio_data); + + /* restart dma */ + spin_lock_irqsave(&btv->s_lock,flags); + btv->curr = btv->state.video; + btv->cvbi = btv->state.vbi; + btv->loop_irq = btv->state.loop_irq; + bttv_buffer_activate_video(btv, &btv->curr); + bttv_buffer_activate_vbi(btv, btv->cvbi); + bttv_set_dma(btv, 0); + spin_unlock_irqrestore(&btv->s_lock,flags); + return 0; +} +#endif + +static struct pci_device_id bttv_pci_tbl[] = { + {PCI_VDEVICE(BROOKTREE, PCI_DEVICE_ID_BT848), 0}, + {PCI_VDEVICE(BROOKTREE, PCI_DEVICE_ID_BT849), 0}, + {PCI_VDEVICE(BROOKTREE, PCI_DEVICE_ID_BT878), 0}, + {PCI_VDEVICE(BROOKTREE, PCI_DEVICE_ID_BT879), 0}, + {PCI_VDEVICE(BROOKTREE, PCI_DEVICE_ID_FUSION879), 0}, + {0,} +}; + +MODULE_DEVICE_TABLE(pci, bttv_pci_tbl); + +static struct pci_driver bttv_pci_driver = { + .name = "bttv", + .id_table = bttv_pci_tbl, + .probe = bttv_probe, + .remove = __devexit_p(bttv_remove), +#ifdef CONFIG_PM + .suspend = bttv_suspend, + .resume = bttv_resume, +#endif +}; + +static int __init bttv_init_module(void) +{ + int ret; + + bttv_num = 0; + + pr_info("driver version %s loaded\n", BTTV_VERSION); + if (gbuffers < 2 || gbuffers > VIDEO_MAX_FRAME) + gbuffers = 2; + if (gbufsize > BTTV_MAX_FBUF) + gbufsize = BTTV_MAX_FBUF; + gbufsize = (gbufsize + PAGE_SIZE - 1) & PAGE_MASK; + if (bttv_verbose) + pr_info("using %d buffers with %dk (%d pages) each for capture\n", + gbuffers, gbufsize >> 10, gbufsize >> PAGE_SHIFT); + + bttv_check_chipset(); + + ret = bus_register(&bttv_sub_bus_type); + if (ret < 0) { + pr_warn("bus_register error: %d\n", ret); + return ret; + } + ret = pci_register_driver(&bttv_pci_driver); + if (ret < 0) + bus_unregister(&bttv_sub_bus_type); + + return ret; +} + +static void __exit bttv_cleanup_module(void) +{ + pci_unregister_driver(&bttv_pci_driver); + bus_unregister(&bttv_sub_bus_type); +} + +module_init(bttv_init_module); +module_exit(bttv_cleanup_module); + +/* + * Local variables: + * c-basic-offset: 8 + * End: + */ |