diff options
Diffstat (limited to 'drivers/media/video/cx231xx/cx231xx-core.c')
| -rw-r--r-- | drivers/media/video/cx231xx/cx231xx-core.c | 1200 |
1 files changed, 1200 insertions, 0 deletions
diff --git a/drivers/media/video/cx231xx/cx231xx-core.c b/drivers/media/video/cx231xx/cx231xx-core.c new file mode 100644 index 000000000000..0d333e679f70 --- /dev/null +++ b/drivers/media/video/cx231xx/cx231xx-core.c @@ -0,0 +1,1200 @@ +/* + cx231xx-core.c - driver for Conexant Cx23100/101/102 + USB video capture devices + + Copyright (C) 2008 <srinivasa.deevi at conexant dot com> + Based on em28xx driver + + 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. + */ + +#include <linux/init.h> +#include <linux/list.h> +#include <linux/module.h> +#include <linux/usb.h> +#include <linux/vmalloc.h> +#include <media/v4l2-common.h> + +#include "cx231xx.h" +#include "cx231xx-reg.h" + +/* #define ENABLE_DEBUG_ISOC_FRAMES */ + +static unsigned int core_debug; +module_param(core_debug, int, 0644); +MODULE_PARM_DESC(core_debug, "enable debug messages [core]"); + +#define cx231xx_coredbg(fmt, arg...) do {\ + if (core_debug) \ + printk(KERN_INFO "%s %s :"fmt, \ + dev->name, __func__ , ##arg); } while (0) + +static unsigned int reg_debug; +module_param(reg_debug, int, 0644); +MODULE_PARM_DESC(reg_debug, "enable debug messages [URB reg]"); + +#define cx231xx_regdbg(fmt, arg...) do {\ + if (reg_debug) \ + printk(KERN_INFO "%s %s :"fmt, \ + dev->name, __func__ , ##arg); } while (0) + +static int alt = CX231XX_PINOUT; +module_param(alt, int, 0644); +MODULE_PARM_DESC(alt, "alternate setting to use for video endpoint"); + +#define cx231xx_isocdbg(fmt, arg...) do {\ + if (core_debug) \ + printk(KERN_INFO "%s %s :"fmt, \ + dev->name, __func__ , ##arg); } while (0) + +/***************************************************************** +* Device control list functions * +******************************************************************/ + +static LIST_HEAD(cx231xx_devlist); +static DEFINE_MUTEX(cx231xx_devlist_mutex); + +struct cx231xx *cx231xx_get_device(int minor, + enum v4l2_buf_type *fh_type, int *has_radio) +{ + struct cx231xx *h, *dev = NULL; + + *fh_type = V4L2_BUF_TYPE_VIDEO_CAPTURE; + *has_radio = 0; + + mutex_lock(&cx231xx_devlist_mutex); + list_for_each_entry(h, &cx231xx_devlist, devlist) { + if (h->vdev->minor == minor) + dev = h; + if (h->vbi_dev->minor == minor) { + dev = h; + *fh_type = V4L2_BUF_TYPE_VBI_CAPTURE; + } + if (h->radio_dev && h->radio_dev->minor == minor) { + dev = h; + *has_radio = 1; + } + } + mutex_unlock(&cx231xx_devlist_mutex); + + return dev; +} + +/* + * cx231xx_realease_resources() + * unregisters the v4l2,i2c and usb devices + * called when the device gets disconected or at module unload +*/ +void cx231xx_remove_from_devlist(struct cx231xx *dev) +{ + mutex_lock(&cx231xx_devlist_mutex); + list_del(&dev->devlist); + mutex_unlock(&cx231xx_devlist_mutex); +}; + +void cx231xx_add_into_devlist(struct cx231xx *dev) +{ + mutex_lock(&cx231xx_devlist_mutex); + list_add_tail(&dev->devlist, &cx231xx_devlist); + mutex_unlock(&cx231xx_devlist_mutex); +}; + +static LIST_HEAD(cx231xx_extension_devlist); +static DEFINE_MUTEX(cx231xx_extension_devlist_lock); + +int cx231xx_register_extension(struct cx231xx_ops *ops) +{ + struct cx231xx *dev = NULL; + + mutex_lock(&cx231xx_devlist_mutex); + mutex_lock(&cx231xx_extension_devlist_lock); + list_add_tail(&ops->next, &cx231xx_extension_devlist); + list_for_each_entry(dev, &cx231xx_devlist, devlist) { + if (dev) + ops->init(dev); + } + printk(KERN_INFO DRIVER_NAME ": %s initialized\n", ops->name); + mutex_unlock(&cx231xx_extension_devlist_lock); + mutex_unlock(&cx231xx_devlist_mutex); + return 0; +} +EXPORT_SYMBOL(cx231xx_register_extension); + +void cx231xx_unregister_extension(struct cx231xx_ops *ops) +{ + struct cx231xx *dev = NULL; + + mutex_lock(&cx231xx_devlist_mutex); + list_for_each_entry(dev, &cx231xx_devlist, devlist) { + if (dev) + ops->fini(dev); + } + + mutex_lock(&cx231xx_extension_devlist_lock); + printk(KERN_INFO DRIVER_NAME ": %s removed\n", ops->name); + list_del(&ops->next); + mutex_unlock(&cx231xx_extension_devlist_lock); + mutex_unlock(&cx231xx_devlist_mutex); +} +EXPORT_SYMBOL(cx231xx_unregister_extension); + +void cx231xx_init_extension(struct cx231xx *dev) +{ + struct cx231xx_ops *ops = NULL; + + mutex_lock(&cx231xx_extension_devlist_lock); + if (!list_empty(&cx231xx_extension_devlist)) { + list_for_each_entry(ops, &cx231xx_extension_devlist, next) { + if (ops->init) + ops->init(dev); + } + } + mutex_unlock(&cx231xx_extension_devlist_lock); +} + +void cx231xx_close_extension(struct cx231xx *dev) +{ + struct cx231xx_ops *ops = NULL; + + mutex_lock(&cx231xx_extension_devlist_lock); + if (!list_empty(&cx231xx_extension_devlist)) { + list_for_each_entry(ops, &cx231xx_extension_devlist, next) { + if (ops->fini) + ops->fini(dev); + } + } + mutex_unlock(&cx231xx_extension_devlist_lock); +} + +/**************************************************************** +* U S B related functions * +*****************************************************************/ +int cx231xx_send_usb_command(struct cx231xx_i2c *i2c_bus, + struct cx231xx_i2c_xfer_data *req_data) +{ + int status = 0; + struct cx231xx *dev = i2c_bus->dev; + struct VENDOR_REQUEST_IN ven_req; + + u8 saddr_len = 0; + u8 _i2c_period = 0; + u8 _i2c_nostop = 0; + u8 _i2c_reserve = 0; + + /* Get the I2C period, nostop and reserve parameters */ + _i2c_period = i2c_bus->i2c_period; + _i2c_nostop = i2c_bus->i2c_nostop; + _i2c_reserve = i2c_bus->i2c_reserve; + + saddr_len = req_data->saddr_len; + + /* Set wValue */ + if (saddr_len == 1) /* need check saddr_len == 0 */ + ven_req.wValue = + req_data-> + dev_addr << 9 | _i2c_period << 4 | saddr_len << 2 | + _i2c_nostop << 1 | I2C_SYNC | _i2c_reserve << 6; + else + ven_req.wValue = + req_data-> + dev_addr << 9 | _i2c_period << 4 | saddr_len << 2 | + _i2c_nostop << 1 | I2C_SYNC | _i2c_reserve << 6; + + /* set channel number */ + if (req_data->direction & I2C_M_RD) { + /* channel number, for read,spec required channel_num +4 */ + ven_req.bRequest = i2c_bus->nr + 4; + } else + ven_req.bRequest = i2c_bus->nr; /* channel number, */ + + /* set index value */ + switch (saddr_len) { + case 0: + ven_req.wIndex = 0; /* need check */ + break; + case 1: + ven_req.wIndex = (req_data->saddr_dat & 0xff); + break; + case 2: + ven_req.wIndex = req_data->saddr_dat; + break; + } + + /* set wLength value */ + ven_req.wLength = req_data->buf_size; + + /* set bData value */ + ven_req.bData = 0; + + /* set the direction */ + if (req_data->direction) { + ven_req.direction = USB_DIR_IN; + memset(req_data->p_buffer, 0x00, ven_req.wLength); + } else + ven_req.direction = USB_DIR_OUT; + + /* set the buffer for read / write */ + ven_req.pBuff = req_data->p_buffer; + + + /* call common vendor command request */ + status = cx231xx_send_vendor_cmd(dev, &ven_req); + if (status < 0) { + cx231xx_info + ("UsbInterface::sendCommand, failed with status -%d\n", + status); + } + + return status; +} +EXPORT_SYMBOL_GPL(cx231xx_send_usb_command); + +/* + * cx231xx_read_ctrl_reg() + * reads data from the usb device specifying bRequest and wValue + */ +int cx231xx_read_ctrl_reg(struct cx231xx *dev, u8 req, u16 reg, + char *buf, int len) +{ + u8 val = 0; + int ret; + int pipe = usb_rcvctrlpipe(dev->udev, 0); + + if (dev->state & DEV_DISCONNECTED) + return -ENODEV; + + if (len > URB_MAX_CTRL_SIZE) + return -EINVAL; + + switch (len) { + case 1: + val = ENABLE_ONE_BYTE; + break; + case 2: + val = ENABLE_TWE_BYTE; + break; + case 3: + val = ENABLE_THREE_BYTE; + break; + case 4: + val = ENABLE_FOUR_BYTE; + break; + default: + val = 0xFF; /* invalid option */ + } + + if (val == 0xFF) + return -EINVAL; + + if (reg_debug) { + cx231xx_isocdbg("(pipe 0x%08x): " + "IN: %02x %02x %02x %02x %02x %02x %02x %02x ", + pipe, + USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, + req, 0, val, + reg & 0xff, reg >> 8, len & 0xff, len >> 8); + } + + mutex_lock(&dev->ctrl_urb_lock); + ret = usb_control_msg(dev->udev, pipe, req, + USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, + val, reg, dev->urb_buf, len, HZ); + if (ret < 0) { + cx231xx_isocdbg(" failed!\n"); + /* mutex_unlock(&dev->ctrl_urb_lock); */ + return ret; + } + + if (len) + memcpy(buf, dev->urb_buf, len); + + mutex_unlock(&dev->ctrl_urb_lock); + + if (reg_debug) { + int byte; + + cx231xx_isocdbg("<<<"); + for (byte = 0; byte < len; byte++) + cx231xx_isocdbg(" %02x", (unsigned char)buf[byte]); + cx231xx_isocdbg("\n"); + } + + return ret; +} + +int cx231xx_send_vendor_cmd(struct cx231xx *dev, + struct VENDOR_REQUEST_IN *ven_req) +{ + int ret; + int pipe = 0; + + if (dev->state & DEV_DISCONNECTED) + return -ENODEV; + + if ((ven_req->wLength > URB_MAX_CTRL_SIZE)) + return -EINVAL; + + if (ven_req->direction) + pipe = usb_rcvctrlpipe(dev->udev, 0); + else + pipe = usb_sndctrlpipe(dev->udev, 0); + + if (reg_debug) { + int byte; + + cx231xx_isocdbg("(pipe 0x%08x): " + "OUT: %02x %02x %02x %04x %04x %04x >>>", + pipe, + ven_req-> + direction | USB_TYPE_VENDOR | USB_RECIP_DEVICE, + ven_req->bRequest, 0, ven_req->wValue, + ven_req->wIndex, ven_req->wLength); + + for (byte = 0; byte < ven_req->wLength; byte++) + cx231xx_isocdbg(" %02x", + (unsigned char)ven_req->pBuff[byte]); + cx231xx_isocdbg("\n"); + } + + mutex_lock(&dev->ctrl_urb_lock); + ret = usb_control_msg(dev->udev, pipe, ven_req->bRequest, + ven_req-> + direction | USB_TYPE_VENDOR | USB_RECIP_DEVICE, + ven_req->wValue, ven_req->wIndex, ven_req->pBuff, + ven_req->wLength, HZ); + mutex_unlock(&dev->ctrl_urb_lock); + + return ret; +} + +/* + * cx231xx_write_ctrl_reg() + * sends data to the usb device, specifying bRequest + */ +int cx231xx_write_ctrl_reg(struct cx231xx *dev, u8 req, u16 reg, char *buf, + int len) +{ + u8 val = 0; + int ret; + int pipe = usb_sndctrlpipe(dev->udev, 0); + + if (dev->state & DEV_DISCONNECTED) + return -ENODEV; + + if ((len < 1) || (len > URB_MAX_CTRL_SIZE)) + return -EINVAL; + + switch (len) { + case 1: + val = ENABLE_ONE_BYTE; + break; + case 2: + val = ENABLE_TWE_BYTE; + break; + case 3: + val = ENABLE_THREE_BYTE; + break; + case 4: + val = ENABLE_FOUR_BYTE; + break; + default: + val = 0xFF; /* invalid option */ + } + + if (val == 0xFF) + return -EINVAL; + + if (reg_debug) { + int byte; + + cx231xx_isocdbg("(pipe 0x%08x): " + "OUT: %02x %02x %02x %02x %02x %02x %02x %02x >>>", + pipe, + USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, + req, 0, val, reg & 0xff, + reg >> 8, len & 0xff, len >> 8); + + for (byte = 0; byte < len; byte++) + cx231xx_isocdbg(" %02x", (unsigned char)buf[byte]); + cx231xx_isocdbg("\n"); + } + + mutex_lock(&dev->ctrl_urb_lock); + memcpy(dev->urb_buf, buf, len); + ret = usb_control_msg(dev->udev, pipe, req, + USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, + val, reg, dev->urb_buf, len, HZ); + mutex_unlock(&dev->ctrl_urb_lock); + + return ret; +} + +/**************************************************************** +* USB Alternate Setting functions * +*****************************************************************/ + +int cx231xx_set_video_alternate(struct cx231xx *dev) +{ + int errCode, prev_alt = dev->video_mode.alt; + unsigned int min_pkt_size = dev->width * 2 + 4; + u32 usb_interface_index = 0; + + /* 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; + + if (dev->width > 360) { + /* resolutions: 720,704,640 */ + dev->video_mode.alt = 3; + } else if (dev->width > 180) { + /* resolutions: 360,352,320,240 */ + dev->video_mode.alt = 2; + } else if (dev->width > 0) { + /* resolutions: 180,176,160,128,88 */ + dev->video_mode.alt = 1; + } else { + /* Change to alt0 BULK to release USB bandwidth */ + dev->video_mode.alt = 0; + } + + /* Get the correct video interface Index */ + usb_interface_index = + dev->current_pcb_config.hs_config_info[0].interface_info. + video_index + 1; + + if (dev->video_mode.alt != prev_alt) { + cx231xx_coredbg("minimum isoc packet size: %u (alt=%d)\n", + min_pkt_size, dev->video_mode.alt); + dev->video_mode.max_pkt_size = + dev->video_mode.alt_max_pkt_size[dev->video_mode.alt]; + cx231xx_coredbg("setting alternate %d with wMaxPacketSize=%u\n", + dev->video_mode.alt, + dev->video_mode.max_pkt_size); + cx231xx_info + (" setting alt %d with wMaxPktSize=%u , Interface = %d\n", + dev->video_mode.alt, dev->video_mode.max_pkt_size, + usb_interface_index); + errCode = + usb_set_interface(dev->udev, usb_interface_index, + dev->video_mode.alt); + if (errCode < 0) { + cx231xx_errdev + ("cannot change alt number to %d (error=%i)\n", + dev->video_mode.alt, errCode); + return errCode; + } + } + return 0; +} + +int cx231xx_set_alt_setting(struct cx231xx *dev, u8 index, u8 alt) +{ + int status = 0; + u32 usb_interface_index = 0; + u32 max_pkt_size = 0; + + switch (index) { + case INDEX_TS1: + usb_interface_index = + dev->current_pcb_config.hs_config_info[0].interface_info. + ts1_index + 1; + dev->video_mode.alt = alt; + if (dev->ts1_mode.alt_max_pkt_size != NULL) + max_pkt_size = dev->ts1_mode.max_pkt_size = + dev->ts1_mode.alt_max_pkt_size[dev->ts1_mode.alt]; + break; + case INDEX_TS2: + usb_interface_index = + dev->current_pcb_config.hs_config_info[0].interface_info. + ts2_index + 1; + break; + case INDEX_AUDIO: + usb_interface_index = + dev->current_pcb_config.hs_config_info[0].interface_info. + audio_index + 1; + dev->adev.alt = alt; + if (dev->adev.alt_max_pkt_size != NULL) + max_pkt_size = dev->adev.max_pkt_size = + dev->adev.alt_max_pkt_size[dev->adev.alt]; + break; + case INDEX_VIDEO: + usb_interface_index = + dev->current_pcb_config.hs_config_info[0].interface_info. + video_index + 1; + dev->video_mode.alt = alt; + if (dev->video_mode.alt_max_pkt_size != NULL) + max_pkt_size = dev->video_mode.max_pkt_size = + dev->video_mode.alt_max_pkt_size[dev->video_mode. + alt]; + break; + case INDEX_VANC: + usb_interface_index = + dev->current_pcb_config.hs_config_info[0].interface_info. + vanc_index + 1; + dev->vbi_mode.alt = alt; + if (dev->vbi_mode.alt_max_pkt_size != NULL) + max_pkt_size = dev->vbi_mode.max_pkt_size = + dev->vbi_mode.alt_max_pkt_size[dev->vbi_mode.alt]; + break; + case INDEX_HANC: + usb_interface_index = + dev->current_pcb_config.hs_config_info[0].interface_info. + hanc_index + 1; + dev->sliced_cc_mode.alt = alt; + if (dev->sliced_cc_mode.alt_max_pkt_size != NULL) + max_pkt_size = dev->sliced_cc_mode.max_pkt_size = + dev->sliced_cc_mode.alt_max_pkt_size[dev-> + sliced_cc_mode. + alt]; + break; + default: + break; + } + + if (alt > 0 && max_pkt_size == 0) { + cx231xx_errdev + ("can't change interface %d alt no. to %d: Max. Pkt size = 0\n", + usb_interface_index, alt); + return -1; + } + + cx231xx_info + (" setting alternate %d with wMaxPacketSize=%u , Interface = %d\n", + alt, max_pkt_size, usb_interface_index); + + if (usb_interface_index > 0) { + status = usb_set_interface(dev->udev, usb_interface_index, alt); + if (status < 0) { + cx231xx_errdev + ("can't change interface %d alt no. to %d (err=%i)\n", + usb_interface_index, alt, status); + return status; + } + } + + return status; +} +EXPORT_SYMBOL_GPL(cx231xx_set_alt_setting); + +int cx231xx_gpio_set(struct cx231xx *dev, struct cx231xx_reg_seq *gpio) +{ + int rc = 0; + + if (!gpio) + return rc; + + /* Send GPIO reset sequences specified at board entry */ + while (gpio->sleep >= 0) { + rc = cx231xx_set_gpio_value(dev, gpio->bit, gpio->val); + if (rc < 0) + return rc; + + if (gpio->sleep > 0) + msleep(gpio->sleep); + + gpio++; + } + return rc; +} + +int cx231xx_set_mode(struct cx231xx *dev, enum cx231xx_mode set_mode) +{ + if (dev->mode == set_mode) + return 0; + + if (set_mode == CX231XX_SUSPEND) { + /* Set the chip in power saving mode */ + dev->mode = set_mode; + } + + /* Resource is locked */ + if (dev->mode != CX231XX_SUSPEND) + return -EINVAL; + + dev->mode = set_mode; + + if (dev->mode == CX231XX_DIGITAL_MODE) + ;/* Set Digital power mode */ + else + ;/* Set Analog Power mode */ + + return 0; +} +EXPORT_SYMBOL_GPL(cx231xx_set_mode); + +/***************************************************************** +* URB Streaming functions * +******************************************************************/ + +/* + * IRQ callback, called by URB callback + */ +static void cx231xx_irq_callback(struct urb *urb) +{ + struct cx231xx_dmaqueue *dma_q = urb->context; + struct cx231xx_video_mode *vmode = + container_of(dma_q, struct cx231xx_video_mode, vidq); + struct cx231xx *dev = container_of(vmode, struct cx231xx, video_mode); + int rc, i; + + switch (urb->status) { + case 0: /* success */ + case -ETIMEDOUT: /* NAK */ + break; + case -ECONNRESET: /* kill */ + case -ENOENT: + case -ESHUTDOWN: + return; + default: /* error */ + cx231xx_isocdbg("urb completition error %d.\n", urb->status); + break; + } + + /* Copy data from URB */ + spin_lock(&dev->video_mode.slock); + rc = dev->video_mode.isoc_ctl.isoc_copy(dev, urb); + spin_unlock(&dev->video_mode.slock); + + /* Reset urb buffers */ + for (i = 0; i < urb->number_of_packets; i++) { + urb->iso_frame_desc[i].status = 0; + urb->iso_frame_desc[i].actual_length = 0; + } + urb->status = 0; + + urb->status = usb_submit_urb(urb, GFP_ATOMIC); + if (urb->status) { + cx231xx_isocdbg("urb resubmit failed (error=%i)\n", + urb->status); + } +} + +/* + * Stop and Deallocate URBs + */ +void cx231xx_uninit_isoc(struct cx231xx *dev) +{ + struct urb *urb; + int i; + + cx231xx_isocdbg("cx231xx: called cx231xx_uninit_isoc\n"); + + dev->video_mode.isoc_ctl.nfields = -1; + for (i = 0; i < dev->video_mode.isoc_ctl.num_bufs; i++) { + urb = dev->video_mode.isoc_ctl.urb[i]; + if (urb) { + if (!irqs_disabled()) + usb_kill_urb(urb); + else + usb_unlink_urb(urb); + + if (dev->video_mode.isoc_ctl.transfer_buffer[i]) { + usb_buffer_free(dev->udev, + urb->transfer_buffer_length, + dev->video_mode.isoc_ctl. + transfer_buffer[i], + urb->transfer_dma); + } + usb_free_urb(urb); + dev->video_mode.isoc_ctl.urb[i] = NULL; + } + dev->video_mode.isoc_ctl.transfer_buffer[i] = NULL; + } + + kfree(dev->video_mode.isoc_ctl.urb); + kfree(dev->video_mode.isoc_ctl.transfer_buffer); + + dev->video_mode.isoc_ctl.urb = NULL; + dev->video_mode.isoc_ctl.transfer_buffer = NULL; + dev->video_mode.isoc_ctl.num_bufs = 0; + + cx231xx_capture_start(dev, 0, Raw_Video); +} +EXPORT_SYMBOL_GPL(cx231xx_uninit_isoc); + +/* + * Allocate URBs and start IRQ + */ +int cx231xx_init_isoc(struct cx231xx *dev, int max_packets, + int num_bufs, int max_pkt_size, + int (*isoc_copy) (struct cx231xx *dev, struct urb *urb)) +{ + struct cx231xx_dmaqueue *dma_q = &dev->video_mode.vidq; + int i; + int sb_size, pipe; + struct urb *urb; + int j, k; + int rc; + + cx231xx_isocdbg("cx231xx: called cx231xx_prepare_isoc\n"); + + dev->video_input = dev->video_input > 2 ? 2 : dev->video_input; + + cx231xx_info("Setting Video mux to %d\n", dev->video_input); + video_mux(dev, dev->video_input); + + /* De-allocates all pending stuff */ + cx231xx_uninit_isoc(dev); + + dev->video_mode.isoc_ctl.isoc_copy = isoc_copy; + dev->video_mode.isoc_ctl.num_bufs = num_bufs; + dma_q->pos = 0; + dma_q->is_partial_line = 0; + dma_q->last_sav = 0; + dma_q->current_field = -1; + dma_q->field1_done = 0; + dma_q->lines_per_field = dev->height / 2; + dma_q->bytes_left_in_line = dev->width << 1; + dma_q->lines_completed = 0; + for (i = 0; i < 8; i++) + dma_q->partial_buf[i] = 0; + + dev->video_mode.isoc_ctl.urb = + kzalloc(sizeof(void *) * num_bufs, GFP_KERNEL); + if (!dev->video_mode.isoc_ctl.urb) { + cx231xx_errdev("cannot alloc memory for usb buffers\n"); + return -ENOMEM; + } + + dev->video_mode.isoc_ctl.transfer_buffer = + kzalloc(sizeof(void *) * num_bufs, GFP_KERNEL); + if (!dev->video_mode.isoc_ctl.transfer_buffer) { + cx231xx_errdev("cannot allocate memory for usbtransfer\n"); + kfree(dev->video_mode.isoc_ctl.urb); + return -ENOMEM; + } + + dev->video_mode.isoc_ctl.max_pkt_size = max_pkt_size; + dev->video_mode.isoc_ctl.buf = NULL; + + sb_size = max_packets * dev->video_mode.isoc_ctl.max_pkt_size; + + /* allocate urbs and transfer buffers */ + for (i = 0; i < dev->video_mode.isoc_ctl.num_bufs; i++) { + urb = usb_alloc_urb(max_packets, GFP_KERNEL); + if (!urb) { + cx231xx_err("cannot alloc isoc_ctl.urb %i\n", i); + cx231xx_uninit_isoc(dev); + return -ENOMEM; + } + dev->video_mode.isoc_ctl.urb[i] = urb; + + dev->video_mode.isoc_ctl.transfer_buffer[i] = + usb_buffer_alloc(dev->udev, sb_size, GFP_KERNEL, + &urb->transfer_dma); + if (!dev->video_mode.isoc_ctl.transfer_buffer[i]) { + cx231xx_err("unable to allocate %i bytes for transfer" + " buffer %i%s\n", + sb_size, i, + in_interrupt() ? " while in int" : ""); + cx231xx_uninit_isoc(dev); + return -ENOMEM; + } + memset(dev->video_mode.isoc_ctl.transfer_buffer[i], 0, sb_size); + + pipe = + usb_rcvisocpipe(dev->udev, dev->video_mode.end_point_addr); + + usb_fill_int_urb(urb, dev->udev, pipe, + dev->video_mode.isoc_ctl.transfer_buffer[i], + sb_size, cx231xx_irq_callback, dma_q, 1); + + urb->number_of_packets = max_packets; + urb->transfer_flags = URB_ISO_ASAP; + + k = 0; + for (j = 0; j < max_packets; j++) { + urb->iso_frame_desc[j].offset = k; + urb->iso_frame_desc[j].length = + dev->video_mode.isoc_ctl.max_pkt_size; + k += dev->video_mode.isoc_ctl.max_pkt_size; + } + } + + init_waitqueue_head(&dma_q->wq); + + /* submit urbs and enables IRQ */ + for (i = 0; i < dev->video_mode.isoc_ctl.num_bufs; i++) { + rc = usb_submit_urb(dev->video_mode.isoc_ctl.urb[i], + GFP_ATOMIC); + if (rc) { + cx231xx_err("submit of urb %i failed (error=%i)\n", i, + rc); + cx231xx_uninit_isoc(dev); + return rc; + } + } + + cx231xx_capture_start(dev, 1, Raw_Video); + + return 0; +} +EXPORT_SYMBOL_GPL(cx231xx_init_isoc); + +/***************************************************************** +* Device Init/UnInit functions * +******************************************************************/ +int cx231xx_dev_init(struct cx231xx *dev) +{ + int errCode = 0; + + /* Initialize I2C bus */ + + /* External Master 1 Bus */ + dev->i2c_bus[0].nr = 0; + dev->i2c_bus[0].dev = dev; + dev->i2c_bus[0].i2c_period = I2C_SPEED_1M; /* 1MHz */ + dev->i2c_bus[0].i2c_nostop = 0; + dev->i2c_bus[0].i2c_reserve = 0; + + /* External Master 2 Bus */ + dev->i2c_bus[1].nr = 1; + dev->i2c_bus[1].dev = dev; + dev->i2c_bus[1].i2c_period = I2C_SPEED_1M; /* 1MHz */ + dev->i2c_bus[1].i2c_nostop = 0; + dev->i2c_bus[1].i2c_reserve = 0; + + /* Internal Master 3 Bus */ + dev->i2c_bus[2].nr = 2; + dev->i2c_bus[2].dev = dev; + dev->i2c_bus[2].i2c_period = I2C_SPEED_400K; /* 400kHz */ + dev->i2c_bus[2].i2c_nostop = 0; + dev->i2c_bus[2].i2c_reserve = 0; + + /* register I2C buses */ + cx231xx_i2c_register(&dev->i2c_bus[0]); + cx231xx_i2c_register(&dev->i2c_bus[1]); + cx231xx_i2c_register(&dev->i2c_bus[2]); + + /* init hardware */ + /* Note : with out calling set power mode function, + afe can not be set up correctly */ + errCode = cx231xx_set_power_mode(dev, POLARIS_AVMODE_ANALOGT_TV); + if (errCode < 0) { + cx231xx_errdev + ("%s: Failed to set Power - errCode [%d]!\n", + __func__, errCode); + return errCode; + } + + /* initialize Colibri block */ + errCode = cx231xx_afe_init_super_block(dev, 0x23c); + if (errCode < 0) { + cx231xx_errdev + ("%s: cx231xx_afe init super block - errCode [%d]!\n", + __func__, errCode); + return errCode; + } + errCode = cx231xx_afe_init_channels(dev); + if (errCode < 0) { + cx231xx_errdev + ("%s: cx231xx_afe init channels - errCode [%d]!\n", + __func__, errCode); + return errCode; + } + + /* Set DIF in By pass mode */ + errCode = cx231xx_dif_set_standard(dev, DIF_USE_BASEBAND); + if (errCode < 0) { + cx231xx_errdev + ("%s: cx231xx_dif set to By pass mode - errCode [%d]!\n", + __func__, errCode); + return errCode; + } + + /* I2S block related functions */ + errCode = cx231xx_i2s_blk_initialize(dev); + if (errCode < 0) { + cx231xx_errdev + ("%s: cx231xx_i2s block initialize - errCode [%d]!\n", + __func__, errCode); + return errCode; + } + + /* init control pins */ + errCode = cx231xx_init_ctrl_pin_status(dev); + if (errCode < 0) { + cx231xx_errdev("%s: cx231xx_init ctrl pins - errCode [%d]!\n", + __func__, errCode); + return errCode; + } + + /* set AGC mode to Analog */ + errCode = cx231xx_set_agc_analog_digital_mux_select(dev, 1); + if (errCode < 0) { + cx231xx_errdev + ("%s: cx231xx_AGC mode to Analog - errCode [%d]!\n", + __func__, errCode); + return errCode; + } + + /* set all alternate settings to zero initially */ + cx231xx_set_alt_setting(dev, INDEX_VIDEO, 0); + cx231xx_set_alt_setting(dev, INDEX_VANC, 0); + cx231xx_set_alt_setting(dev, INDEX_HANC, 0); + if (dev->board.has_dvb) + cx231xx_set_alt_setting(dev, INDEX_TS1, 0); + + /* set the I2C master port to 3 on channel 1 */ + errCode = cx231xx_enable_i2c_for_tuner(dev, I2C_3); + + return errCode; +} +EXPORT_SYMBOL_GPL(cx231xx_dev_init); + +void cx231xx_dev_uninit(struct cx231xx *dev) +{ + /* Un Initialize I2C bus */ + cx231xx_i2c_unregister(&dev->i2c_bus[2]); + cx231xx_i2c_unregister(&dev->i2c_bus[1]); + cx231xx_i2c_unregister(&dev->i2c_bus[0]); +} +EXPORT_SYMBOL_GPL(cx231xx_dev_uninit); + +/***************************************************************** +* G P I O related functions * +******************************************************************/ +int cx231xx_send_gpio_cmd(struct cx231xx *dev, u32 gpio_bit, u8 * gpio_val, + u8 len, u8 request, u8 direction) +{ + int status = 0; + struct VENDOR_REQUEST_IN ven_req; + + /* Set wValue */ + ven_req.wValue = (u16) (gpio_bit >> 16 & 0xffff); + + /* set request */ + if (!request) { + if (direction) + ven_req.bRequest = VRT_GET_GPIO; /* 0x8 gpio */ + else + ven_req.bRequest = VRT_SET_GPIO; /* 0x9 gpio */ + } else { + if (direction) + ven_req.bRequest = VRT_GET_GPIE; /* 0xa gpie */ + else + ven_req.bRequest = VRT_SET_GPIE; /* 0xb gpie */ + } + + /* set index value */ + ven_req.wIndex = (u16) (gpio_bit & 0xffff); + + /* set wLength value */ + ven_req.wLength = len; + + /* set bData value */ + ven_req.bData = 0; + + /* set the buffer for read / write */ + ven_req.pBuff = gpio_val; + + /* set the direction */ + if (direction) { + ven_req.direction = USB_DIR_IN; + memset(ven_req.pBuff, 0x00, ven_req.wLength); + } else + ven_req.direction = USB_DIR_OUT; + + + /* call common vendor command request */ + status = cx231xx_send_vendor_cmd(dev, &ven_req); + if (status < 0) { + cx231xx_info + ("UsbInterface::sendCommand, failed with status -%d\n", + status); + } + + return status; +} +EXPORT_SYMBOL_GPL(cx231xx_send_gpio_cmd); + +/***************************************************************** + * C O N T R O L - Register R E A D / W R I T E functions * + *****************************************************************/ +int cx231xx_mode_register(struct cx231xx *dev, u16 address, u32 mode) +{ + u8 value[4] = { 0x0, 0x0, 0x0, 0x0 }; + u32 tmp = 0; + int status = 0; + + status = + cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER, address, value, 4); + if (status < 0) + return status; + + tmp = *((u32 *) value); + tmp |= mode; + + value[0] = (u8) tmp; + value[1] = (u8) (tmp >> 8); + value[2] = (u8) (tmp >> 16); + value[3] = (u8) (tmp >> 24); + + status = + cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER, address, value, 4); + + return status; +} + +/***************************************************************** + * I 2 C Internal C O N T R O L functions * + *****************************************************************/ +int cx231xx_read_i2c_data(struct cx231xx *dev, u8 dev_addr, u16 saddr, + u8 saddr_len, u32 *data, u8 data_len) +{ + int status = 0; + struct cx231xx_i2c_xfer_data req_data; + u8 value[4] = { 0, 0, 0, 0 }; + + if (saddr_len == 0) + saddr = 0; + else if (saddr_len == 0) + saddr &= 0xff; + + /* prepare xfer_data struct */ + req_data.dev_addr = dev_addr >> 1; + req_data.direction = I2C_M_RD; + req_data.saddr_len = saddr_len; + req_data.saddr_dat = saddr; + req_data.buf_size = data_len; + req_data.p_buffer = (u8 *) value; + + /* usb send command */ + status = dev->cx231xx_send_usb_command(&dev->i2c_bus[0], &req_data); + + if (status >= 0) { + /* Copy the data read back to main buffer */ + if (data_len == 1) + *data = value[0]; + else + *data = + value[0] | value[1] << 8 | value[2] << 16 | value[3] + << 24; + } + + return status; +} + +int cx231xx_write_i2c_data(struct cx231xx *dev, u8 dev_addr, u16 saddr, + u8 saddr_len, u32 data, u8 data_len) +{ + int status = 0; + u8 value[4] = { 0, 0, 0, 0 }; + struct cx231xx_i2c_xfer_data req_data; + + value[0] = (u8) data; + value[1] = (u8) (data >> 8); + value[2] = (u8) (data >> 16); + value[3] = (u8) (data >> 24); + + if (saddr_len == 0) + saddr = 0; + else if (saddr_len == 0) + saddr &= 0xff; + + /* prepare xfer_data struct */ + req_data.dev_addr = dev_addr >> 1; + req_data.direction = 0; + req_data.saddr_len = saddr_len; + req_data.saddr_dat = saddr; + req_data.buf_size = data_len; + req_data.p_buffer = value; + + /* usb send command */ + status = dev->cx231xx_send_usb_command(&dev->i2c_bus[0], &req_data); + + return status; +} + +int cx231xx_reg_mask_write(struct cx231xx *dev, u8 dev_addr, u8 size, + u16 register_address, u8 bit_start, u8 bit_end, + u32 value) +{ + int status = 0; + u32 tmp; + u32 mask = 0; + int i; + + if (bit_start > (size - 1) || bit_end > (size - 1)) + return -1; + + if (size == 8) { + status = + cx231xx_read_i2c_data(dev, dev_addr, register_address, 2, + &tmp, 1); + } else { + status = + cx231xx_read_i2c_data(dev, dev_addr, register_address, 2, + &tmp, 4); + } + + if (status < 0) + return status; + + mask = 1 << bit_end; + for (i = bit_end; i > bit_start && i > 0; i--) + mask = mask + (1 << (i - 1)); + + value <<= bit_start; + + if (size == 8) { + tmp &= ~mask; + tmp |= value; + tmp &= 0xff; + status = + cx231xx_write_i2c_data(dev, dev_addr, register_address, 2, + tmp, 1); + } else { + tmp &= ~mask; + tmp |= value; + status = + cx231xx_write_i2c_data(dev, dev_addr, register_address, 2, + tmp, 4); + } + + return status; +} + +int cx231xx_read_modify_write_i2c_dword(struct cx231xx *dev, u8 dev_addr, + u16 saddr, u32 mask, u32 value) +{ + u32 temp; + int status = 0; + + status = cx231xx_read_i2c_data(dev, dev_addr, saddr, 2, &temp, 4); + + if (status < 0) + return status; + + temp &= ~mask; + temp |= value; + + status = cx231xx_write_i2c_data(dev, dev_addr, saddr, 2, temp, 4); + + return status; +} + +u32 cx231xx_set_field(u32 field_mask, u32 data) +{ + u32 temp; + + for (temp = field_mask; (temp & 1) == 0; temp >>= 1) + data <<= 1; + + return data; +} |