#include "em28xx.h"
+#define DRIVER_AUTHOR "Ludovico Cavedon <cavedon@sssup.it>, " \
+ "Markus Rechberger <mrechberger@gmail.com>, " \
+ "Mauro Carvalho Chehab <mchehab@infradead.org>, " \
+ "Sascha Sommer <saschasommer@freenet.de>"
+
+MODULE_AUTHOR(DRIVER_AUTHOR);
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL");
+MODULE_VERSION(EM28XX_VERSION);
+
/* #define ENABLE_DEBUG_ISOC_FRAMES */
static unsigned int core_debug;
printk(KERN_INFO "%s %s :"fmt, \
dev->name, __func__ , ##arg); } while (0)
-static int alt;
-module_param(alt, int, 0644);
-MODULE_PARM_DESC(alt, "alternate setting to use for video endpoint");
-
-static unsigned int disable_vbi;
-module_param(disable_vbi, int, 0644);
-MODULE_PARM_DESC(disable_vbi, "disable vbi support");
-
/* FIXME */
#define em28xx_isocdbg(fmt, arg...) do {\
if (core_debug) \
int vid1, vid2, feat, cfg;
u32 vid;
- if (dev->chip_id == CHIP_ID_EM2870 ||
- dev->chip_id == CHIP_ID_EM2874 ||
- dev->chip_id == CHIP_ID_EM28174 ||
- dev->chip_id == CHIP_ID_EM28178) {
- /* Digital only device - don't load any alsa module */
- dev->audio_mode.has_audio = false;
- dev->has_audio_class = false;
- dev->has_alsa_audio = false;
+ if (!dev->audio_mode.has_audio)
return 0;
- }
-
- dev->audio_mode.has_audio = true;
/* See how this device is configured */
cfg = em28xx_read_reg(dev, EM28XX_R00_CHIPCFG);
}
EXPORT_SYMBOL_GPL(em28xx_audio_setup);
-int em28xx_colorlevels_set_default(struct em28xx *dev)
-{
- em28xx_write_reg(dev, EM28XX_R20_YGAIN, CONTRAST_DEFAULT);
- em28xx_write_reg(dev, EM28XX_R21_YOFFSET, BRIGHTNESS_DEFAULT);
- em28xx_write_reg(dev, EM28XX_R22_UVGAIN, SATURATION_DEFAULT);
- em28xx_write_reg(dev, EM28XX_R23_UOFFSET, BLUE_BALANCE_DEFAULT);
- em28xx_write_reg(dev, EM28XX_R24_VOFFSET, RED_BALANCE_DEFAULT);
- em28xx_write_reg(dev, EM28XX_R25_SHARPNESS, SHARPNESS_DEFAULT);
-
- em28xx_write_reg(dev, EM28XX_R14_GAMMA, 0x20);
- em28xx_write_reg(dev, EM28XX_R15_RGAIN, 0x20);
- em28xx_write_reg(dev, EM28XX_R16_GGAIN, 0x20);
- em28xx_write_reg(dev, EM28XX_R17_BGAIN, 0x20);
- em28xx_write_reg(dev, EM28XX_R18_ROFFSET, 0x00);
- em28xx_write_reg(dev, EM28XX_R19_GOFFSET, 0x00);
- return em28xx_write_reg(dev, EM28XX_R1A_BOFFSET, 0x00);
-}
-
const struct em28xx_led *em28xx_find_led(struct em28xx *dev,
enum em28xx_led_role role)
{
return rc;
}
-int em28xx_vbi_supported(struct em28xx *dev)
-{
- /* Modprobe option to manually disable */
- if (disable_vbi == 1)
- return 0;
-
- if (dev->board.is_webcam)
- return 0;
-
- /* FIXME: check subdevices for VBI support */
-
- if (dev->chip_id == CHIP_ID_EM2860 ||
- dev->chip_id == CHIP_ID_EM2883)
- return 1;
-
- /* Version of em28xx that does not support VBI */
- return 0;
-}
-
-int em28xx_set_outfmt(struct em28xx *dev)
-{
- int ret;
- u8 fmt, vinctrl;
-
- fmt = dev->format->reg;
- if (!dev->is_em25xx)
- fmt |= 0x20;
- /*
- * NOTE: it's not clear if this is really needed !
- * The datasheets say bit 5 is a reserved bit and devices seem to work
- * fine without it. But the Windows driver sets it for em2710/50+em28xx
- * devices and we've always been setting it, too.
- *
- * em2765 (em25xx, em276x/7x/8x) devices do NOT work with this bit set,
- * it's likely used for an additional (compressed ?) format there.
- */
- ret = em28xx_write_reg(dev, EM28XX_R27_OUTFMT, fmt);
- if (ret < 0)
- return ret;
-
- ret = em28xx_write_reg(dev, EM28XX_R10_VINMODE, dev->vinmode);
- if (ret < 0)
- return ret;
-
- vinctrl = dev->vinctl;
- if (em28xx_vbi_supported(dev) == 1) {
- vinctrl |= EM28XX_VINCTRL_VBI_RAW;
- em28xx_write_reg(dev, EM28XX_R34_VBI_START_H, 0x00);
- em28xx_write_reg(dev, EM28XX_R36_VBI_WIDTH, dev->vbi_width/4);
- em28xx_write_reg(dev, EM28XX_R37_VBI_HEIGHT, dev->vbi_height);
- if (dev->norm & V4L2_STD_525_60) {
- /* NTSC */
- em28xx_write_reg(dev, EM28XX_R35_VBI_START_V, 0x09);
- } else if (dev->norm & V4L2_STD_625_50) {
- /* PAL */
- em28xx_write_reg(dev, EM28XX_R35_VBI_START_V, 0x07);
- }
- }
-
- return em28xx_write_reg(dev, EM28XX_R11_VINCTRL, vinctrl);
-}
-
-static int em28xx_accumulator_set(struct em28xx *dev, u8 xmin, u8 xmax,
- u8 ymin, u8 ymax)
-{
- em28xx_coredbg("em28xx Scale: (%d,%d)-(%d,%d)\n",
- xmin, ymin, xmax, ymax);
-
- em28xx_write_regs(dev, EM28XX_R28_XMIN, &xmin, 1);
- em28xx_write_regs(dev, EM28XX_R29_XMAX, &xmax, 1);
- em28xx_write_regs(dev, EM28XX_R2A_YMIN, &ymin, 1);
- return em28xx_write_regs(dev, EM28XX_R2B_YMAX, &ymax, 1);
-}
-
-static void em28xx_capture_area_set(struct em28xx *dev, u8 hstart, u8 vstart,
- u16 width, u16 height)
-{
- u8 cwidth = width >> 2;
- u8 cheight = height >> 2;
- u8 overflow = (height >> 9 & 0x02) | (width >> 10 & 0x01);
- /* NOTE: size limit: 2047x1023 = 2MPix */
-
- em28xx_coredbg("capture area set to (%d,%d): %dx%d\n",
- hstart, vstart,
- ((overflow & 2) << 9 | cwidth << 2),
- ((overflow & 1) << 10 | cheight << 2));
-
- em28xx_write_regs(dev, EM28XX_R1C_HSTART, &hstart, 1);
- em28xx_write_regs(dev, EM28XX_R1D_VSTART, &vstart, 1);
- em28xx_write_regs(dev, EM28XX_R1E_CWIDTH, &cwidth, 1);
- em28xx_write_regs(dev, EM28XX_R1F_CHEIGHT, &cheight, 1);
- em28xx_write_regs(dev, EM28XX_R1B_OFLOW, &overflow, 1);
-
- /* FIXME: function/meaning of these registers ? */
- /* FIXME: align width+height to multiples of 4 ?! */
- if (dev->is_em25xx) {
- em28xx_write_reg(dev, 0x34, width >> 4);
- em28xx_write_reg(dev, 0x35, height >> 4);
- }
-}
-
-static int em28xx_scaler_set(struct em28xx *dev, u16 h, u16 v)
-{
- u8 mode;
- /* the em2800 scaler only supports scaling down to 50% */
-
- if (dev->board.is_em2800) {
- mode = (v ? 0x20 : 0x00) | (h ? 0x10 : 0x00);
- } else {
- u8 buf[2];
-
- buf[0] = h;
- buf[1] = h >> 8;
- em28xx_write_regs(dev, EM28XX_R30_HSCALELOW, (char *)buf, 2);
-
- buf[0] = v;
- buf[1] = v >> 8;
- em28xx_write_regs(dev, EM28XX_R32_VSCALELOW, (char *)buf, 2);
- /* it seems that both H and V scalers must be active
- to work correctly */
- mode = (h || v) ? 0x30 : 0x00;
- }
- return em28xx_write_reg_bits(dev, EM28XX_R26_COMPR, mode, 0x30);
-}
-
-/* FIXME: this only function read values from dev */
-int em28xx_resolution_set(struct em28xx *dev)
-{
- int width, height;
- width = norm_maxw(dev);
- height = norm_maxh(dev);
-
- /* Properly setup VBI */
- dev->vbi_width = 720;
- if (dev->norm & V4L2_STD_525_60)
- dev->vbi_height = 12;
- else
- dev->vbi_height = 18;
-
- em28xx_set_outfmt(dev);
-
- em28xx_accumulator_set(dev, 1, (width - 4) >> 2, 1, (height - 4) >> 2);
-
- /* If we don't set the start position to 2 in VBI mode, we end up
- with line 20/21 being YUYV encoded instead of being in 8-bit
- greyscale. The core of the issue is that line 21 (and line 23 for
- PAL WSS) are inside of active video region, and as a result they
- get the pixelformatting associated with that area. So by cropping
- it out, we end up with the same format as the rest of the VBI
- region */
- if (em28xx_vbi_supported(dev) == 1)
- em28xx_capture_area_set(dev, 0, 2, width, height);
- else
- em28xx_capture_area_set(dev, 0, 0, width, height);
-
- return em28xx_scaler_set(dev, dev->hscale, dev->vscale);
-}
-
-/* Set USB alternate setting for analog video */
-int em28xx_set_alternate(struct em28xx *dev)
-{
- int errCode;
- int i;
- unsigned int min_pkt_size = dev->width * 2 + 4;
-
- /* NOTE: for isoc transfers, only alt settings > 0 are allowed
- bulk transfers seem to work only with alt=0 ! */
- dev->alt = 0;
- if ((alt > 0) && (alt < dev->num_alt)) {
- em28xx_coredbg("alternate forced to %d\n", dev->alt);
- dev->alt = alt;
- goto set_alt;
- }
- if (dev->analog_xfer_bulk)
- goto set_alt;
-
- /* When image size is bigger than a certain value,
- the frame size should be increased, otherwise, only
- green screen will be received.
- */
- if (dev->width * 2 * dev->height > 720 * 240 * 2)
- min_pkt_size *= 2;
-
- for (i = 0; i < dev->num_alt; i++) {
- /* stop when the selected alt setting offers enough bandwidth */
- if (dev->alt_max_pkt_size_isoc[i] >= min_pkt_size) {
- dev->alt = i;
- break;
- /* otherwise make sure that we end up with the maximum bandwidth
- because the min_pkt_size equation might be wrong...
- */
- } else if (dev->alt_max_pkt_size_isoc[i] >
- dev->alt_max_pkt_size_isoc[dev->alt])
- dev->alt = i;
- }
-
-set_alt:
- /* NOTE: for bulk transfers, we need to call usb_set_interface()
- * even if the previous settings were the same. Otherwise streaming
- * fails with all urbs having status = -EOVERFLOW ! */
- if (dev->analog_xfer_bulk) {
- dev->max_pkt_size = 512; /* USB 2.0 spec */
- dev->packet_multiplier = EM28XX_BULK_PACKET_MULTIPLIER;
- } else { /* isoc */
- em28xx_coredbg("minimum isoc packet size: %u (alt=%d)\n",
- min_pkt_size, dev->alt);
- dev->max_pkt_size =
- dev->alt_max_pkt_size_isoc[dev->alt];
- dev->packet_multiplier = EM28XX_NUM_ISOC_PACKETS;
- }
- em28xx_coredbg("setting alternate %d with wMaxPacketSize=%u\n",
- dev->alt, dev->max_pkt_size);
- errCode = usb_set_interface(dev->udev, 0, dev->alt);
- if (errCode < 0) {
- em28xx_errdev("cannot change alternate number to %d (error=%i)\n",
- dev->alt, errCode);
- return errCode;
- }
- return 0;
-}
-
int em28xx_gpio_set(struct em28xx *dev, struct em28xx_reg_seq *gpio)
{
int rc = 0;
}
EXPORT_SYMBOL_GPL(em28xx_init_usb_xfer);
-/*
- * em28xx_wake_i2c()
- * configure i2c attached devices
- */
-void em28xx_wake_i2c(struct em28xx *dev)
-{
- v4l2_device_call_all(&dev->v4l2_dev, 0, core, reset, 0);
- v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_routing,
- INPUT(dev->ctl_input)->vmux, 0, 0);
- v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_stream, 0);
-}
-
/*
* Device control list
*/
ops->init(dev);
}
mutex_unlock(&em28xx_devlist_mutex);
- printk(KERN_INFO "Em28xx: Initialized (%s) extension\n", ops->name);
+ printk(KERN_INFO "em28xx: Registered (%s) extension\n", ops->name);
return 0;
}
EXPORT_SYMBOL(em28xx_register_extension);
const struct em28xx_ops *ops = NULL;
mutex_lock(&em28xx_devlist_mutex);
+ mutex_lock(&dev->lock);
list_for_each_entry(ops, &em28xx_extension_devlist, next) {
if (ops->fini)
ops->fini(dev);
}
+ mutex_unlock(&dev->lock);
list_del(&dev->devlist);
mutex_unlock(&em28xx_devlist_mutex);
}
projects / ~andy / linux / blobdiff