/* cx231xx-core.c - driver for Conexant Cx23100/101/102 USB video capture devices Copyright (C) 2008 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 #include #include #include #include #include #include #include #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]"); 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 * ******************************************************************/ LIST_HEAD(cx231xx_devlist); static DEFINE_MUTEX(cx231xx_devlist_mutex); /* * 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) { if (dev == NULL) return; if (dev->udev == NULL) return; if (atomic_read(&dev->devlist_count) > 0) { mutex_lock(&cx231xx_devlist_mutex); list_del(&dev->devlist); atomic_dec(&dev->devlist_count); 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); atomic_inc(&dev->devlist_count); mutex_unlock(&cx231xx_devlist_mutex); }; static LIST_HEAD(cx231xx_extension_devlist); int cx231xx_register_extension(struct cx231xx_ops *ops) { struct cx231xx *dev = NULL; mutex_lock(&cx231xx_devlist_mutex); list_add_tail(&ops->next, &cx231xx_extension_devlist); list_for_each_entry(dev, &cx231xx_devlist, devlist) ops->init(dev); printk(KERN_INFO DRIVER_NAME ": %s initialized\n", ops->name); 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) ops->fini(dev); printk(KERN_INFO DRIVER_NAME ": %s removed\n", ops->name); list_del(&ops->next); 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_devlist_mutex); if (!list_empty(&cx231xx_extension_devlist)) { list_for_each_entry(ops, &cx231xx_extension_devlist, next) { if (ops->init) ops->init(dev); } } mutex_unlock(&cx231xx_devlist_mutex); } void cx231xx_close_extension(struct cx231xx *dev) { struct cx231xx_ops *ops = NULL; mutex_lock(&cx231xx_devlist_mutex); if (!list_empty(&cx231xx_extension_devlist)) { list_for_each_entry(ops, &cx231xx_extension_devlist, next) { if (ops->fini) ops->fini(dev); } } mutex_unlock(&cx231xx_devlist_mutex); } /**************************************************************** * 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; if (dev->state & DEV_DISCONNECTED) return -ENODEV; /* 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); /* * Sends/Receives URB control messages, assuring to use a kalloced buffer * for all operations (dev->urb_buf), to avoid using stacked buffers, as * they aren't safe for usage with USB, due to DMA restrictions. * Also implements the debug code for control URB's. */ static int __usb_control_msg(struct cx231xx *dev, unsigned int pipe, __u8 request, __u8 requesttype, __u16 value, __u16 index, void *data, __u16 size, int timeout) { int rc, i; if (reg_debug) { printk(KERN_DEBUG "%s: (pipe 0x%08x): " "%s: %02x %02x %02x %02x %02x %02x %02x %02x ", dev->name, pipe, (requesttype & USB_DIR_IN) ? "IN" : "OUT", requesttype, request, value & 0xff, value >> 8, index & 0xff, index >> 8, size & 0xff, size >> 8); if (!(requesttype & USB_DIR_IN)) { printk(KERN_CONT ">>>"); for (i = 0; i < size; i++) printk(KERN_CONT " %02x", ((unsigned char *)data)[i]); } } /* Do the real call to usb_control_msg */ mutex_lock(&dev->ctrl_urb_lock); if (!(requesttype & USB_DIR_IN) && size) memcpy(dev->urb_buf, data, size); rc = usb_control_msg(dev->udev, pipe, request, requesttype, value, index, dev->urb_buf, size, timeout); if ((requesttype & USB_DIR_IN) && size) memcpy(data, dev->urb_buf, size); mutex_unlock(&dev->ctrl_urb_lock); if (reg_debug) { if (unlikely(rc < 0)) { printk(KERN_CONT "FAILED!\n"); return rc; } if ((requesttype & USB_DIR_IN)) { printk(KERN_CONT "<<<"); for (i = 0; i < size; i++) printk(KERN_CONT " %02x", ((unsigned char *)data)[i]); } printk(KERN_CONT "\n"); } return rc; } /* * 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; ret = __usb_control_msg(dev, pipe, req, USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, val, reg, buf, len, HZ); return ret; } int cx231xx_send_vendor_cmd(struct cx231xx *dev, struct VENDOR_REQUEST_IN *ven_req) { int ret; int pipe = 0; int unsend_size = 0; u8 *pdata; 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 the cx23102 read more than 4 bytes with i2c bus, * need chop to 4 byte per request */ if ((ven_req->wLength > 4) && ((ven_req->bRequest == 0x4) || (ven_req->bRequest == 0x5) || (ven_req->bRequest == 0x6))) { unsend_size = 0; pdata = ven_req->pBuff; unsend_size = ven_req->wLength; /* the first package */ ven_req->wValue = ven_req->wValue & 0xFFFB; ven_req->wValue = (ven_req->wValue & 0xFFBD) | 0x2; ret = __usb_control_msg(dev, pipe, ven_req->bRequest, ven_req->direction | USB_TYPE_VENDOR | USB_RECIP_DEVICE, ven_req->wValue, ven_req->wIndex, pdata, 0x0004, HZ); unsend_size = unsend_size - 4; /* the middle package */ ven_req->wValue = (ven_req->wValue & 0xFFBD) | 0x42; while (unsend_size - 4 > 0) { pdata = pdata + 4; ret = __usb_control_msg(dev, pipe, ven_req->bRequest, ven_req->direction | USB_TYPE_VENDOR | USB_RECIP_DEVICE, ven_req->wValue, ven_req->wIndex, pdata, 0x0004, HZ); unsend_size = unsend_size - 4; } /* the last package */ ven_req->wValue = (ven_req->wValue & 0xFFBD) | 0x40; pdata = pdata + 4; ret = __usb_control_msg(dev, pipe, ven_req->bRequest, ven_req->direction | USB_TYPE_VENDOR | USB_RECIP_DEVICE, ven_req->wValue, ven_req->wIndex, pdata, unsend_size, HZ); } else { ret = __usb_control_msg(dev, 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); } 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"); } ret = __usb_control_msg(dev, pipe, req, USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, val, reg, buf, len, HZ); 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; } if (dev->USE_ISO == 0) dev->video_mode.alt = 0; cx231xx_coredbg("dev->video_mode.alt= %d\n", dev->video_mode.alt); /* 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); if (dev->video_mode.alt_max_pkt_size != NULL) 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); 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->ts1_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: if (dev->board.no_alt_vanc) return 0; 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); /*To workaround error number=-71 on EP0 for videograbber, need add following codes.*/ if (dev->board.no_alt_vanc) return -1; } cx231xx_coredbg("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_demod_reset(struct cx231xx *dev) { u8 status = 0; u8 value[4] = { 0, 0, 0, 0 }; status = cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER, PWR_CTL_EN, value, 4); cx231xx_coredbg("reg0x%x=0x%x 0x%x 0x%x 0x%x\n", PWR_CTL_EN, value[0], value[1], value[2], value[3]); cx231xx_coredbg("Enter cx231xx_demod_reset()\n"); value[1] = (u8) 0x3; status = cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER, PWR_CTL_EN, value, 4); msleep(10); value[1] = (u8) 0x0; status = cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER, PWR_CTL_EN, value, 4); msleep(10); value[1] = (u8) 0x3; status = cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER, PWR_CTL_EN, value, 4); msleep(10); status = cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER, PWR_CTL_EN, value, 4); cx231xx_coredbg("reg0x%x=0x%x 0x%x 0x%x 0x%x\n", PWR_CTL_EN, value[0], value[1], value[2], value[3]); return status; } EXPORT_SYMBOL_GPL(cx231xx_demod_reset); int is_fw_load(struct cx231xx *dev) { return cx231xx_check_fw(dev); } EXPORT_SYMBOL_GPL(is_fw_load); int cx231xx_set_mode(struct cx231xx *dev, enum cx231xx_mode set_mode) { int errCode = 0; 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 */ { /* set AGC mode to Digital */ switch (dev->model) { case CX231XX_BOARD_CNXT_CARRAERA: case CX231XX_BOARD_CNXT_RDE_250: case CX231XX_BOARD_CNXT_SHELBY: case CX231XX_BOARD_CNXT_RDU_250: errCode = cx231xx_set_agc_analog_digital_mux_select(dev, 0); break; case CX231XX_BOARD_CNXT_RDE_253S: case CX231XX_BOARD_CNXT_RDU_253S: case CX231XX_BOARD_PV_PLAYTV_USB_HYBRID: errCode = cx231xx_set_agc_analog_digital_mux_select(dev, 1); break; case CX231XX_BOARD_HAUPPAUGE_EXETER: errCode = cx231xx_set_power_mode(dev, POLARIS_AVMODE_DIGITAL); break; default: break; } } else/* Set Analog Power mode */ { /* set AGC mode to Analog */ switch (dev->model) { case CX231XX_BOARD_CNXT_CARRAERA: case CX231XX_BOARD_CNXT_RDE_250: case CX231XX_BOARD_CNXT_SHELBY: case CX231XX_BOARD_CNXT_RDU_250: errCode = cx231xx_set_agc_analog_digital_mux_select(dev, 1); break; case CX231XX_BOARD_CNXT_RDE_253S: case CX231XX_BOARD_CNXT_RDU_253S: case CX231XX_BOARD_HAUPPAUGE_EXETER: case CX231XX_BOARD_PV_PLAYTV_USB_HYBRID: case CX231XX_BOARD_HAUPPAUGE_USB2_FM_PAL: case CX231XX_BOARD_HAUPPAUGE_USB2_FM_NTSC: errCode = cx231xx_set_agc_analog_digital_mux_select(dev, 0); break; default: break; } } return errCode ? -EINVAL : 0; } EXPORT_SYMBOL_GPL(cx231xx_set_mode); int cx231xx_ep5_bulkout(struct cx231xx *dev, u8 *firmware, u16 size) { int errCode = 0; int actlen, ret = -ENOMEM; u32 *buffer; buffer = kzalloc(4096, GFP_KERNEL); if (buffer == NULL) { cx231xx_info("out of mem\n"); return -ENOMEM; } memcpy(&buffer[0], firmware, 4096); ret = usb_bulk_msg(dev->udev, usb_sndbulkpipe(dev->udev, 5), buffer, 4096, &actlen, 2000); if (ret) cx231xx_info("bulk message failed: %d (%d/%d)", ret, size, actlen); else { errCode = actlen != size ? -1 : 0; } kfree(buffer); return errCode; } /***************************************************************** * URB Streaming functions * ******************************************************************/ /* * IRQ callback, called by URB callback */ static void cx231xx_isoc_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 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); 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 = usb_submit_urb(urb, GFP_ATOMIC); if (urb->status) { cx231xx_isocdbg("urb resubmit failed (error=%i)\n", urb->status); } } /***************************************************************** * URB Streaming functions * ******************************************************************/ /* * IRQ callback, called by URB callback */ static void cx231xx_bulk_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); 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); dev->video_mode.bulk_ctl.bulk_copy(dev, urb); spin_unlock(&dev->video_mode.slock); /* Reset urb buffers */ 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 cx231xx_dmaqueue *dma_q = &dev->video_mode.vidq; 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_free_coherent(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); kfree(dma_q->p_left_data); dev->video_mode.isoc_ctl.urb = NULL; dev->video_mode.isoc_ctl.transfer_buffer = NULL; dev->video_mode.isoc_ctl.num_bufs = 0; dma_q->p_left_data = NULL; if (dev->mode_tv == 0) cx231xx_capture_start(dev, 0, Raw_Video); else cx231xx_capture_start(dev, 0, TS1_serial_mode); } EXPORT_SYMBOL_GPL(cx231xx_uninit_isoc); /* * Stop and Deallocate URBs */ void cx231xx_uninit_bulk(struct cx231xx *dev) { struct urb *urb; int i; cx231xx_isocdbg("cx231xx: called cx231xx_uninit_bulk\n"); dev->video_mode.bulk_ctl.nfields = -1; for (i = 0; i < dev->video_mode.bulk_ctl.num_bufs; i++) { urb = dev->video_mode.bulk_ctl.urb[i]; if (urb) { if (!irqs_disabled()) usb_kill_urb(urb); else usb_unlink_urb(urb); if (dev->video_mode.bulk_ctl.transfer_buffer[i]) { usb_free_coherent(dev->udev, urb->transfer_buffer_length, dev->video_mode.isoc_ctl. transfer_buffer[i], urb->transfer_dma); } usb_free_urb(urb); dev->video_mode.bulk_ctl.urb[i] = NULL; } dev->video_mode.bulk_ctl.transfer_buffer[i] = NULL; } kfree(dev->video_mode.bulk_ctl.urb); kfree(dev->video_mode.bulk_ctl.transfer_buffer); dev->video_mode.bulk_ctl.urb = NULL; dev->video_mode.bulk_ctl.transfer_buffer = NULL; dev->video_mode.bulk_ctl.num_bufs = 0; if (dev->mode_tv == 0) cx231xx_capture_start(dev, 0, Raw_Video); else cx231xx_capture_start(dev, 0, TS1_serial_mode); } EXPORT_SYMBOL_GPL(cx231xx_uninit_bulk); /* * 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; /* De-allocates all pending stuff */ cx231xx_uninit_isoc(dev); dma_q->p_left_data = kzalloc(4096, GFP_KERNEL); if (dma_q->p_left_data == NULL) { cx231xx_info("out of mem\n"); return -ENOMEM; } 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; dma_q->mpeg_buffer_done = 0; dma_q->left_data_count = 0; dma_q->mpeg_buffer_completed = 0; dma_q->add_ps_package_head = CX231XX_NEED_ADD_PS_PACKAGE_HEAD; dma_q->ps_head[0] = 0x00; dma_q->ps_head[1] = 0x00; dma_q->ps_head[2] = 0x01; dma_q->ps_head[3] = 0xBA; 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; if (dev->mode_tv == 1) dev->video_mode.end_point_addr = 0x81; else dev->video_mode.end_point_addr = 0x84; /* 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_alloc_coherent(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_isoc_irq_callback, dma_q, 1); urb->number_of_packets = max_packets; urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP; 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; } } if (dev->mode_tv == 0) cx231xx_capture_start(dev, 1, Raw_Video); else cx231xx_capture_start(dev, 1, TS1_serial_mode); return 0; } EXPORT_SYMBOL_GPL(cx231xx_init_isoc); /* * Allocate URBs and start IRQ */ int cx231xx_init_bulk(struct cx231xx *dev, int max_packets, int num_bufs, int max_pkt_size, int (*bulk_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 rc; dev->video_input = dev->video_input > 2 ? 2 : dev->video_input; cx231xx_coredbg("Setting Video mux to %d\n", dev->video_input); video_mux(dev, dev->video_input); /* De-allocates all pending stuff */ cx231xx_uninit_bulk(dev); dev->video_mode.bulk_ctl.bulk_copy = bulk_copy; dev->video_mode.bulk_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; dma_q->mpeg_buffer_done = 0; dma_q->left_data_count = 0; dma_q->mpeg_buffer_completed = 0; dma_q->ps_head[0] = 0x00; dma_q->ps_head[1] = 0x00; dma_q->ps_head[2] = 0x01; dma_q->ps_head[3] = 0xBA; for (i = 0; i < 8; i++) dma_q->partial_buf[i] = 0; dev->video_mode.bulk_ctl.urb = kzalloc(sizeof(void *) * num_bufs, GFP_KERNEL); if (!dev->video_mode.bulk_ctl.urb) { cx231xx_errdev("cannot alloc memory for usb buffers\n"); return -ENOMEM; } dev->video_mode.bulk_ctl.transfer_buffer = kzalloc(sizeof(void *) * num_bufs, GFP_KERNEL); if (!dev->video_mode.bulk_ctl.transfer_buffer) { cx231xx_errdev("cannot allocate memory for usbtransfer\n"); kfree(dev->video_mode.bulk_ctl.urb); return -ENOMEM; } dev->video_mode.bulk_ctl.max_pkt_size = max_pkt_size; dev->video_mode.bulk_ctl.buf = NULL; sb_size = max_packets * dev->video_mode.bulk_ctl.max_pkt_size; if (dev->mode_tv == 1) dev->video_mode.end_point_addr = 0x81; else dev->video_mode.end_point_addr = 0x84; /* allocate urbs and transfer buffers */ for (i = 0; i < dev->video_mode.bulk_ctl.num_bufs; i++) { urb = usb_alloc_urb(0, GFP_KERNEL); if (!urb) { cx231xx_err("cannot alloc bulk_ctl.urb %i\n", i); cx231xx_uninit_bulk(dev); return -ENOMEM; } dev->video_mode.bulk_ctl.urb[i] = urb; urb->transfer_flags = URB_NO_TRANSFER_DMA_MAP; dev->video_mode.bulk_ctl.transfer_buffer[i] = usb_alloc_coherent(dev->udev, sb_size, GFP_KERNEL, &urb->transfer_dma); if (!dev->video_mode.bulk_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_bulk(dev); return -ENOMEM; } memset(dev->video_mode.bulk_ctl.transfer_buffer[i], 0, sb_size); pipe = usb_rcvbulkpipe(dev->udev, dev->video_mode.end_point_addr); usb_fill_bulk_urb(urb, dev->udev, pipe, dev->video_mode.bulk_ctl.transfer_buffer[i], sb_size, cx231xx_bulk_irq_callback, dma_q); } init_waitqueue_head(&dma_q->wq); /* submit urbs and enables IRQ */ for (i = 0; i < dev->video_mode.bulk_ctl.num_bufs; i++) { rc = usb_submit_urb(dev->video_mode.bulk_ctl.urb[i], GFP_ATOMIC); if (rc) { cx231xx_err("submit of urb %i failed (error=%i)\n", i, rc); cx231xx_uninit_bulk(dev); return rc; } } if (dev->mode_tv == 0) cx231xx_capture_start(dev, 1, Raw_Video); else cx231xx_capture_start(dev, 1, TS1_serial_mode); return 0; } EXPORT_SYMBOL_GPL(cx231xx_init_bulk); void cx231xx_stop_TS1(struct cx231xx *dev) { u8 val[4] = { 0, 0, 0, 0 }; val[0] = 0x00; val[1] = 0x03; val[2] = 0x00; val[3] = 0x00; cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER, TS_MODE_REG, val, 4); val[0] = 0x00; val[1] = 0x70; val[2] = 0x04; val[3] = 0x00; cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER, TS1_CFG_REG, val, 4); } /* EXPORT_SYMBOL_GPL(cx231xx_stop_TS1); */ void cx231xx_start_TS1(struct cx231xx *dev) { u8 val[4] = { 0, 0, 0, 0 }; val[0] = 0x03; val[1] = 0x03; val[2] = 0x00; val[3] = 0x00; cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER, TS_MODE_REG, val, 4); val[0] = 0x04; val[1] = 0xA3; val[2] = 0x3B; val[3] = 0x00; cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER, TS1_CFG_REG, val, 4); } /* EXPORT_SYMBOL_GPL(cx231xx_start_TS1); */ /***************************************************************** * 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_100K; /* 100 KHz */ 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_100K; /* 100 KHz */ 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_100K; /* 100kHz */ 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 */ if (dev->board.external_av) { errCode = cx231xx_set_power_mode(dev, POLARIS_AVMODE_ENXTERNAL_AV); if (errCode < 0) { cx231xx_errdev ("%s: Failed to set Power - errCode [%d]!\n", __func__, errCode); return errCode; } } else { 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; } } /* reset the Tuner, if it is a Xceive tuner */ if ((dev->board.tuner_type == TUNER_XC5000) || (dev->board.tuner_type == TUNER_XC2028)) cx231xx_gpio_set(dev, dev->board.tuner_gpio); /* 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 */ switch (dev->model) { case CX231XX_BOARD_CNXT_CARRAERA: case CX231XX_BOARD_CNXT_RDE_250: case CX231XX_BOARD_CNXT_SHELBY: case CX231XX_BOARD_CNXT_RDU_250: errCode = cx231xx_set_agc_analog_digital_mux_select(dev, 1); break; case CX231XX_BOARD_CNXT_RDE_253S: case CX231XX_BOARD_CNXT_RDU_253S: case CX231XX_BOARD_HAUPPAUGE_EXETER: case CX231XX_BOARD_PV_PLAYTV_USB_HYBRID: case CX231XX_BOARD_HAUPPAUGE_USB2_FM_PAL: case CX231XX_BOARD_HAUPPAUGE_USB2_FM_NTSC: errCode = cx231xx_set_agc_analog_digital_mux_select(dev, 0); break; default: break; } 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_port_3(dev, true); 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 = le32_to_cpu(*((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_master(struct cx231xx *dev, u8 dev_addr, u16 saddr, u8 saddr_len, u32 *data, u8 data_len, int master) { int status = 0; struct cx231xx_i2c_xfer_data req_data; u8 value[64] = "0"; if (saddr_len == 0) saddr = 0; else if (saddr_len == 1) 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 */ if (master == 0) status = dev->cx231xx_send_usb_command(&dev->i2c_bus[0], &req_data); else if (master == 1) status = dev->cx231xx_send_usb_command(&dev->i2c_bus[1], &req_data); else if (master == 2) status = dev->cx231xx_send_usb_command(&dev->i2c_bus[2], &req_data); if (status >= 0) { /* Copy the data read back to main buffer */ if (data_len == 1) *data = value[0]; else if (data_len == 4) *data = value[0] | value[1] << 8 | value[2] << 16 | value[3] << 24; else if (data_len > 4) *data = value[saddr]; } return status; } int cx231xx_write_i2c_master(struct cx231xx *dev, u8 dev_addr, u16 saddr, u8 saddr_len, u32 data, u8 data_len, int master) { 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 == 1) 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 */ if (master == 0) status = dev->cx231xx_send_usb_command(&dev->i2c_bus[0], &req_data); else if (master == 1) status = dev->cx231xx_send_usb_command(&dev->i2c_bus[1], &req_data); else if (master == 2) status = dev->cx231xx_send_usb_command(&dev->i2c_bus[2], &req_data); return status; } 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 == 1) 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 == 1) 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; }