/*
* Driver for USB webcams based on Konica chipset. This
* chipset is used in Intel YC76 camera.
*
* Copyright (C) 2010 Hans de Goede <hdegoede@redhat.com>
*
* Based on the usbvideo v4l1 konicawc driver which is:
*
* Copyright (C) 2002 Simon Evans <spse@secret.org.uk>
*
* The code for making gspca work with a webcam with 2 isoc endpoints was
* taken from the benq gspca subdriver which is:
*
* Copyright (C) 2009 Jean-Francois Moine (http://moinejf.free.fr)
*
* 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
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#define MODULE_NAME "konica"
#include <linux/input.h>
#include "gspca.h"
MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>");
MODULE_DESCRIPTION("Konica chipset USB Camera Driver");
MODULE_LICENSE("GPL");
#define WHITEBAL_REG 0x01
#define BRIGHTNESS_REG 0x02
#define SHARPNESS_REG 0x03
#define CONTRAST_REG 0x04
#define SATURATION_REG 0x05
/* specific webcam descriptor */
struct sd {
struct gspca_dev gspca_dev; /* !! must be the first item */
struct urb *last_data_urb;
u8 snapshot_pressed;
u8 brightness;
u8 contrast;
u8 saturation;
u8 whitebal;
u8 sharpness;
};
/* V4L2 controls supported by the driver */
static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val);
static int sd_getbrightness(struct gspca_dev *gspca_dev, __s32 *val);
static int sd_setcontrast(struct gspca_dev *gspca_dev, __s32 val);
static int sd_getcontrast(struct gspca_dev *gspca_dev, __s32 *val);
static int sd_setsaturation(struct gspca_dev *gspca_dev, __s32 val);
static int sd_getsaturation(struct gspca_dev *gspca_dev, __s32 *val);
static int sd_setwhitebal(struct gspca_dev *gspca_dev, __s32 val);
static int sd_getwhitebal(struct gspca_dev *gspca_dev, __s32 *val);
static int sd_setsharpness(struct gspca_dev *gspca_dev, __s32 val);
static int sd_getsharpness(struct gspca_dev *gspca_dev, __s32 *val);
static const struct ctrl sd_ctrls[] = {
#define SD_BRIGHTNESS 0
{
{
.id = V4L2_CID_BRIGHTNESS,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Brightness",
.minimum = 0,
.maximum = 9,
.step = 1,
#define BRIGHTNESS_DEFAULT 4
.default_value = BRIGHTNESS_DEFAULT,
.flags = 0,
},
.set = sd_setbrightness,
.get = sd_getbrightness,
},
#define SD_CONTRAST 1
{
{
.id = V4L2_CID_CONTRAST,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Contrast",
.minimum = 0,
.maximum = 9,
.step = 4,
#define CONTRAST_DEFAULT 10
.default_value = CONTRAST_DEFAULT,
.flags = 0,
},
.set = sd_setcontrast,
.get = sd_getcontrast,
},
#define SD_SATURATION 2
{
{
.id = V4L2_CID_SATURATION,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Saturation",
.minimum = 0,
.maximum = 9,
.step = 1,
#define SATURATION_DEFAULT 4
.default_value = SATURATION_DEFAULT,
.flags = 0,
},
.set = sd_setsaturation,
.get = sd_getsaturation,
},
#define SD_WHITEBAL 3
{
{
.id = V4L2_CID_WHITE_BALANCE_TEMPERATURE,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "White Balance",
.minimum = 0,
.maximum = 33,
.step = 1,
#define WHITEBAL_DEFAULT 25
.default_value = WHITEBAL_DEFAULT,
.flags = 0,
},
.set = sd_setwhitebal,
.get = sd_getwhitebal,
},
#define SD_SHARPNESS 4
{
{
.id = V4L2_CID_SHARPNESS,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Sharpness",
.minimum = 0,
.maximum = 9,
.step = 1,
#define SHARPNESS_DEFAULT 4
.default_value = SHARPNESS_DEFAULT,
.flags = 0,
},
.set = sd_setsharpness,
.get = sd_getsharpness,
},
};
/* .priv is what goes to register 8 for this mode, known working values:
0x00 -> 176x144, cropped
0x01 -> 176x144, cropped
0x02 -> 176x144, cropped
0x03 -> 176x144, cropped
0x04 -> 176x144, binned
0x05 -> 320x240
0x06 -> 320x240
0x07 -> 160x120, cropped
0x08 -> 160x120, cropped
0x09 -> 160x120, binned (note has 136 lines)
0x0a -> 160x120, binned (note has 136 lines)
0x0b -> 160x120, cropped
*/
static const struct v4l2_pix_format vga_mode[] = {
{160, 120, V4L2_PIX_FMT_KONICA420, V4L2_FIELD_NONE,
.bytesperline = 160,
.sizeimage = 160 * 136 * 3 / 2 + 960,
.colorspace = V4L2_COLORSPACE_SRGB,
.priv = 0x0a},
{176, 144, V4L2_PIX_FMT_KONICA420, V4L2_FIELD_NONE,
.bytesperline = 176,
.sizeimage = 176 * 144 * 3 / 2 + 960,
.colorspace = V4L2_COLORSPACE_SRGB,
.priv = 0x04},
{320, 240, V4L2_PIX_FMT_KONICA420, V4L2_FIELD_NONE,
.bytesperline = 320,
.sizeimage = 320 * 240 * 3 / 2 + 960,
.colorspace = V4L2_COLORSPACE_SRGB,
.priv = 0x05},
};
static void sd_isoc_irq(struct urb *urb);
static void reg_w(struct gspca_dev *gspca_dev, u16 value, u16 index)
{
struct usb_device *dev = gspca_dev->dev;
int ret;
if (gspca_dev->usb_err < 0)
return;
ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
0x02,
USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
value,
index,
NULL,
0,
1000);
if (ret < 0) {
pr_err("reg_w err %d\n", ret);
gspca_dev->usb_err = ret;
}
}
static void reg_r(struct gspca_dev *gspca_dev, u16 value, u16 index)
{
struct usb_device *dev = gspca_dev->dev;
int ret;
if (gspca_dev->usb_err < 0)
return;
ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
0x03,
USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
value,
index,
gspca_dev->usb_buf,
2,
1000);
if (ret < 0) {
pr_err("reg_w err %d\n", ret);
gspca_dev->usb_err = ret;
}
}
static void konica_stream_on(struct gspca_dev *gspca_dev)
{
reg_w(gspca_dev, 1, 0x0b);
}
static void konica_stream_off(struct gspca_dev *gspca_dev)
{
reg_w(gspca_dev, 0, 0x0b);
}
/* this function is called at probe time */
static int sd_config(struct gspca_dev *gspca_dev,
const struct usb_device_id *id)
{
struct sd *sd = (struct sd *) gspca_dev;
gspca_dev->cam.cam_mode = vga_mode;
gspca_dev->cam.nmodes = ARRAY_SIZE(vga_mode);
gspca_dev->cam.no_urb_create = 1;
/* The highest alt setting has an isoc packetsize of 0, so we
don't want to use it */
gspca_dev->nbalt--;
sd->brightness = BRIGHTNESS_DEFAULT;
sd->contrast = CONTRAST_DEFAULT;
sd->saturation = SATURATION_DEFAULT;
sd->whitebal = WHITEBAL_DEFAULT;
sd->sharpness = SHARPNESS_DEFAULT;
return 0;
}
/* this function is called at probe and resume time */
static int sd_init(struct gspca_dev *gspca_dev)
{
/* HDG not sure if these 2 reads are needed */
reg_r(gspca_dev, 0, 0x10);
PDEBUG(D_PROBE, "Reg 0x10 reads: %02x %02x",
gspca_dev->usb_buf[0], gspca_dev->usb_buf[1]);
reg_r(gspca_dev, 0, 0x10);
PDEBUG(D_PROBE, "Reg 0x10 reads: %02x %02x",
gspca_dev->usb_buf[0], gspca_dev->usb_buf[1]);
reg_w(gspca_dev, 0, 0x0d);
return 0;
}
static int sd_start(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
struct urb *urb;
int i, n, packet_size;
struct usb_host_interface *alt;
struct usb_interface *intf;
intf = usb_ifnum_to_if(sd->gspca_dev.dev, sd->gspca_dev.iface);
alt = usb_altnum_to_altsetting(intf, sd->gspca_dev.alt);
if (!alt) {
pr_err("Couldn't get altsetting\n");
return -EIO;
}
packet_size = le16_to_cpu(alt->endpoint[0].desc.wMaxPacketSize);
reg_w(gspca_dev, sd->brightness, BRIGHTNESS_REG);
reg_w(gspca_dev, sd->whitebal, WHITEBAL_REG);
reg_w(gspca_dev, sd->contrast, CONTRAST_REG);
reg_w(gspca_dev, sd->saturation, SATURATION_REG);
reg_w(gspca_dev, sd->sharpness, SHARPNESS_REG);
n = gspca_dev->cam.cam_mode[gspca_dev->curr_mode].priv;
reg_w(gspca_dev, n, 0x08);
konica_stream_on(gspca_dev);
if (gspca_dev->usb_err)
return gspca_dev->usb_err;
/* create 4 URBs - 2 on endpoint 0x83 and 2 on 0x082 */
#if MAX_NURBS < 4
#error "Not enough URBs in the gspca table"
#endif
#define SD_NPKT 32
for (n = 0; n < 4; n++) {
i = n & 1 ? 0 : 1;
packet_size =
le16_to_cpu(alt->endpoint[i].desc.wMaxPacketSize);
urb = usb_alloc_urb(SD_NPKT, GFP_KERNEL);
if (!urb) {
pr_err("usb_alloc_urb failed\n");
return -ENOMEM;
}
gspca_dev->urb[n] = urb;
urb->transfer_buffer = usb_alloc_coherent(gspca_dev->dev,
packet_size * SD_NPKT,
GFP_KERNEL,
&urb->transfer_dma);
if (urb->transfer_buffer == NULL) {
pr_err("usb_buffer_alloc failed\n");
return -ENOMEM;
}
urb->dev = gspca_dev->dev;
urb->context = gspca_dev;
urb->transfer_buffer_length = packet_size * SD_NPKT;
urb->pipe = usb_rcvisocpipe(gspca_dev->dev,
n & 1 ? 0x81 : 0x82);
urb->transfer_flags = URB_ISO_ASAP
| URB_NO_TRANSFER_DMA_MAP;
urb->interval = 1;
urb->complete = sd_isoc_irq;
urb->number_of_packets = SD_NPKT;
for (i = 0; i < SD_NPKT; i++) {
urb->iso_frame_desc[i].length = packet_size;
urb->iso_frame_desc[i].offset = packet_size * i;
}
}
return 0;
}
static void sd_stopN(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
konica_stream_off(gspca_dev);
#if defined(CONFIG_INPUT) || defined(CONFIG_INPUT_MODULE)
/* Don't keep the button in the pressed state "forever" if it was
pressed when streaming is stopped */
if (sd->snapshot_pressed) {
input_report_key(gspca_dev->input_dev, KEY_CAMERA, 0);
input_sync(gspca_dev->input_dev);
sd->snapshot_pressed = 0;
}
#endif
}
/* reception of an URB */
static void sd_isoc_irq(struct urb *urb)
{
struct gspca_dev *gspca_dev = (struct gspca_dev *) urb->context;
struct sd *sd = (struct sd *) gspca_dev;
struct urb *data_urb, *status_urb;
u8 *data;
int i, st;
PDEBUG(D_PACK, "sd isoc irq");
if (!gspca_dev->streaming)
return;
if (urb->status != 0) {
if (urb->status == -ESHUTDOWN)
return; /* disconnection */
#ifdef CONFIG_PM
if (gspca_dev->frozen)
return;
#endif
PDEBUG(D_ERR, "urb status: %d", urb->status);
st = usb_submit_urb(urb, GFP_ATOMIC);
if (st < 0)
pr_err("resubmit urb error %d\n", st);
return;
}
/* if this is a data URB (ep 0x82), wait */
if (urb->transfer_buffer_length > 32) {
sd->last_data_urb = urb;
return;
}
status_urb = urb;
data_urb = sd->last_data_urb;
sd->last_data_urb = NULL;
if (!data_urb || data_urb->start_frame != status_urb->start_frame) {
PDEBUG(D_ERR|D_PACK, "lost sync on frames");
goto resubmit;
}
if (data_urb->number_of_packets != status_urb->number_of_packets) {
PDEBUG(D_ERR|D_PACK,
"no packets does not match, data: %d, status: %d",
data_urb->number_of_packets,
status_urb->number_of_packets);
goto resubmit;
}
for (i = 0; i < status_urb->number_of_packets; i++) {
if (data_urb->iso_frame_desc[i].status ||
status_urb->iso_frame_desc[i].status) {
PDEBUG(D_ERR|D_PACK,
"pkt %d data-status %d, status-status %d", i,
data_urb->iso_frame_desc[i].status,
status_urb->iso_frame_desc[i].status);
gspca_dev->last_packet_type = DISCARD_PACKET;
continue;
}
if (status_urb->iso_frame_desc[i].actual_length != 1) {
PDEBUG(D_ERR|D_PACK,
"bad status packet length %d",
status_urb->iso_frame_desc[i].actual_length);
gspca_dev->last_packet_type = DISCARD_PACKET;
continue;
}
st = *((u8 *)status_urb->transfer_buffer
+ status_urb->iso_frame_desc[i].offset);
data = (u8 *)data_urb->transfer_buffer
+ data_urb->iso_frame_desc[i].offset;
/* st: 0x80-0xff: frame start with frame number (ie 0-7f)
* otherwise:
* bit 0 0: keep packet
* 1: drop packet (padding data)
*
* bit 4 0 button not clicked
* 1 button clicked
* button is used to `take a picture' (in software)
*/
if (st & 0x80) {
gspca_frame_add(gspca_dev, LAST_PACKET, NULL, 0);
gspca_frame_add(gspca_dev, FIRST_PACKET, NULL, 0);
} else {
#if defined(CONFIG_INPUT) || defined(CONFIG_INPUT_MODULE)
u8 button_state = st & 0x40 ? 1 : 0;
if (sd->snapshot_pressed != button_state) {
input_report_key(gspca_dev->input_dev,
KEY_CAMERA,
button_state);
input_sync(gspca_dev->input_dev);
sd->snapshot_pressed = button_state;
}
#endif
if (st & 0x01)
continue;
}
gspca_frame_add(gspca_dev, INTER_PACKET, data,
data_urb->iso_frame_desc[i].actual_length);
}
resubmit:
if (data_urb) {
st = usb_submit_urb(data_urb, GFP_ATOMIC);
if (st < 0)
PDEBUG(D_ERR|D_PACK,
"usb_submit_urb(data_urb) ret %d", st);
}
st = usb_submit_urb(status_urb, GFP_ATOMIC);
if (st < 0)
pr_err("usb_submit_urb(status_urb) ret %d\n", st);
}
static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val)
{
struct sd *sd = (struct sd *) gspca_dev;
sd->brightness = val;
if (gspca_dev->streaming) {
konica_stream_off(gspca_dev);
reg_w(gspca_dev, sd->brightness, BRIGHTNESS_REG);
konica_stream_on(gspca_dev);
}
return 0;
}
static int sd_getbrightness(struct gspca_dev *gspca_dev, __s32 *val)
{
struct sd *sd = (struct sd *) gspca_dev;
*val = sd->brightness;
return 0;
}
static int sd_setcontrast(struct gspca_dev *gspca_dev, __s32 val)
{
struct sd *sd = (struct sd *) gspca_dev;
sd->contrast = val;
if (gspca_dev->streaming) {
konica_stream_off(gspca_dev);
reg_w(gspca_dev, sd->contrast, CONTRAST_REG);
konica_stream_on(gspca_dev);
}
return 0;
}
static int sd_getcontrast(struct gspca_dev *gspca_dev, __s32 *val)
{
struct sd *sd = (struct sd *) gspca_dev;
*val = sd->contrast;
return 0;
}
static int sd_setsaturation(struct gspca_dev *gspca_dev, __s32 val)
{
struct sd *sd = (struct sd *) gspca_dev;
sd->saturation = val;
if (gspca_dev->streaming) {
konica_stream_off(gspca_dev);
reg_w(gspca_dev, sd->saturation, SATURATION_REG);
konica_stream_on(gspca_dev);
}
return 0;
}
static int sd_getsaturation(struct gspca_dev *gspca_dev, __s32 *val)
{
struct sd *sd = (struct sd *) gspca_dev;
*val = sd->saturation;
return 0;
}
static int sd_setwhitebal(struct gspca_dev *gspca_dev, __s32 val)
{
struct sd *sd = (struct sd *) gspca_dev;
sd->whitebal = val;
if (gspca_dev->streaming) {
konica_stream_off(gspca_dev);
reg_w(gspca_dev, sd->whitebal, WHITEBAL_REG);
konica_stream_on(gspca_dev);
}
return 0;
}
static int sd_getwhitebal(struct gspca_dev *gspca_dev, __s32 *val)
{
struct sd *sd = (struct sd *) gspca_dev;
*val = sd->whitebal;
return 0;
}
static int sd_setsharpness(struct gspca_dev *gspca_dev, __s32 val)
{
struct sd *sd = (struct sd *) gspca_dev;
sd->sharpness = val;
if (gspca_dev->streaming) {
konica_stream_off(gspca_dev);
reg_w(gspca_dev, sd->sharpness, SHARPNESS_REG);
konica_stream_on(gspca_dev);
}
return 0;
}
static int sd_getsharpness(struct gspca_dev *gspca_dev, __s32 *val)
{
struct sd *sd = (struct sd *) gspca_dev;
*val = sd->sharpness;
return 0;
}
/* sub-driver description */
static const struct sd_desc sd_desc = {
.name = MODULE_NAME,
.ctrls = sd_ctrls,
.nctrls = ARRAY_SIZE(sd_ctrls),
.config = sd_config,
.init = sd_init,
.start = sd_start,
.stopN = sd_stopN,
#if defined(CONFIG_INPUT) || defined(CONFIG_INPUT_MODULE)
.other_input = 1,
#endif
};
/* -- module initialisation -- */
static const struct usb_device_id device_table[] = {
{USB_DEVICE(0x04c8, 0x0720)}, /* Intel YC 76 */
{}
};
MODULE_DEVICE_TABLE(usb, device_table);
/* -- device connect -- */
static int sd_probe(struct usb_interface *intf,
const struct usb_device_id *id)
{
return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd),
THIS_MODULE);
}
static struct usb_driver sd_driver = {
.name = MODULE_NAME,
.id_table = device_table,
.probe = sd_probe,
.disconnect = gspca_disconnect,
#ifdef CONFIG_PM
.suspend = gspca_suspend,
.resume = gspca_resume,
#endif
};
module_usb_driver(sd_driver);
