--- /dev/null
+/*
+ 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;
+}
projects / linux-2.6-omap-h63xx.git / blobdiff