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android_kernel_xiaomi_sm8350/drivers/media/video/gspca/tv8532.c
Hans de Goede 74c519cb6c V4L/DVB: gspca_tv8532: rename brightness control to exposure 
What we've called brightness so far actually is an exposure control,
rename it and fixup the maximum and default values.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-08-02 14:06:06 -03:00

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/*
* Quickcam cameras initialization data
*
* V4L2 by 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 MODULE_NAME "tv8532"
#include "gspca.h"
MODULE_AUTHOR("Michel Xhaard <mxhaard@users.sourceforge.net>");
MODULE_DESCRIPTION("TV8532 USB Camera Driver");
MODULE_LICENSE("GPL");
/* specific webcam descriptor */
struct sd {
struct gspca_dev gspca_dev; /* !! must be the first item */
__u16 exposure;
__u16 gain;
__u8 packet;
};
/* V4L2 controls supported by the driver */
static int sd_setexposure(struct gspca_dev *gspca_dev, __s32 val);
static int sd_getexposure(struct gspca_dev *gspca_dev, __s32 *val);
static int sd_setgain(struct gspca_dev *gspca_dev, __s32 val);
static int sd_getgain(struct gspca_dev *gspca_dev, __s32 *val);
static const struct ctrl sd_ctrls[] = {
{
{
.id = V4L2_CID_EXPOSURE,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Exposure",
.minimum = 1,
.maximum = 0x18f,
.step = 1,
#define EXPOSURE_DEF 0x18f
.default_value = EXPOSURE_DEF,
},
.set = sd_setexposure,
.get = sd_getexposure,
},
{
{
.id = V4L2_CID_GAIN,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Gain",
.minimum = 0,
.maximum = 0x7ff,
.step = 1,
#define GAIN_DEF 0x100
.default_value = GAIN_DEF,
},
.set = sd_setgain,
.get = sd_getgain,
},
};
static const struct v4l2_pix_format sif_mode[] = {
{176, 144, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE,
.bytesperline = 176,
.sizeimage = 176 * 144,
.colorspace = V4L2_COLORSPACE_SRGB,
.priv = 1},
{352, 288, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE,
.bytesperline = 352,
.sizeimage = 352 * 288,
.colorspace = V4L2_COLORSPACE_SRGB,
.priv = 0},
};
/* TV-8532A (ICM532A) registers (LE) */
#define R00_PART_CONTROL 0x00
#define LATENT_CHANGE 0x80
#define EXPO_CHANGE 0x04
#define R01_TIMING_CONTROL_LOW 0x01
#define CMD_EEprom_Open 0x30
#define CMD_EEprom_Close 0x29
#define R03_TABLE_ADDR 0x03
#define R04_WTRAM_DATA_L 0x04
#define R05_WTRAM_DATA_M 0x05
#define R06_WTRAM_DATA_H 0x06
#define R07_TABLE_LEN 0x07
#define R08_RAM_WRITE_ACTION 0x08
#define R0C_AD_WIDTHL 0x0c
#define R0D_AD_WIDTHH 0x0d
#define R0E_AD_HEIGHTL 0x0e
#define R0F_AD_HEIGHTH 0x0f
#define R10_AD_COL_BEGINL 0x10
#define R11_AD_COL_BEGINH 0x11
#define MIRROR 0x04 /* [10] */
#define R14_AD_ROW_BEGINL 0x14
#define R15_AD_ROWBEGINH 0x15
#define R1C_AD_EXPOSE_TIMEL 0x1c
#define R20_GAIN_G1L 0x20
#define R21_GAIN_G1H 0x21
#define R22_GAIN_RL 0x22
#define R23_GAIN_RH 0x23
#define R24_GAIN_BL 0x24
#define R25_GAIN_BH 0x25
#define R26_GAIN_G2L 0x26
#define R27_GAIN_G2H 0x27
#define R28_QUANT 0x28
#define R29_LINE 0x29
#define R2C_POLARITY 0x2c
#define R2D_POINT 0x2d
#define R2E_POINTH 0x2e
#define R2F_POINTB 0x2f
#define R30_POINTBH 0x30
#define R31_UPD 0x31
#define R2A_HIGH_BUDGET 0x2a
#define R2B_LOW_BUDGET 0x2b
#define R34_VID 0x34
#define R35_VIDH 0x35
#define R36_PID 0x36
#define R37_PIDH 0x37
#define R39_Test1 0x39 /* GPIO */
#define R3B_Test3 0x3B /* GPIO */
#define R83_AD_IDH 0x83
#define R91_AD_SLOPEREG 0x91
#define R94_AD_BITCONTROL 0x94
static const u8 eeprom_data[][3] = {
/* dataH dataM dataL */
{0x01, 0x00, 0x01},
{0x01, 0x80, 0x11},
{0x05, 0x00, 0x14},
{0x05, 0x00, 0x1c},
{0x0d, 0x00, 0x1e},
{0x05, 0x00, 0x1f},
{0x05, 0x05, 0x19},
{0x05, 0x01, 0x1b},
{0x05, 0x09, 0x1e},
{0x0d, 0x89, 0x2e},
{0x05, 0x89, 0x2f},
{0x05, 0x0d, 0xd9},
{0x05, 0x09, 0xf1},
};
/* write 1 byte */
static void reg_w1(struct gspca_dev *gspca_dev,
__u16 index, __u8 value)
{
gspca_dev->usb_buf[0] = value;
usb_control_msg(gspca_dev->dev,
usb_sndctrlpipe(gspca_dev->dev, 0),
0x02,
USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
0, /* value */
index, gspca_dev->usb_buf, 1, 500);
}
/* write 2 bytes */
static void reg_w2(struct gspca_dev *gspca_dev,
u16 index, u16 value)
{
gspca_dev->usb_buf[0] = value;
gspca_dev->usb_buf[1] = value >> 8;
usb_control_msg(gspca_dev->dev,
usb_sndctrlpipe(gspca_dev->dev, 0),
0x02,
USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
0, /* value */
index, gspca_dev->usb_buf, 2, 500);
}
static void tv_8532WriteEEprom(struct gspca_dev *gspca_dev)
{
int i;
reg_w1(gspca_dev, R01_TIMING_CONTROL_LOW, CMD_EEprom_Open);
for (i = 0; i < ARRAY_SIZE(eeprom_data); i++) {
reg_w1(gspca_dev, R03_TABLE_ADDR, i);
reg_w1(gspca_dev, R04_WTRAM_DATA_L, eeprom_data[i][2]);
reg_w1(gspca_dev, R05_WTRAM_DATA_M, eeprom_data[i][1]);
reg_w1(gspca_dev, R06_WTRAM_DATA_H, eeprom_data[i][0]);
reg_w1(gspca_dev, R08_RAM_WRITE_ACTION, 0);
}
reg_w1(gspca_dev, R07_TABLE_LEN, i);
reg_w1(gspca_dev, R01_TIMING_CONTROL_LOW, CMD_EEprom_Close);
}
/* 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;
struct cam *cam;
cam = &gspca_dev->cam;
cam->cam_mode = sif_mode;
cam->nmodes = ARRAY_SIZE(sif_mode);
sd->exposure = EXPOSURE_DEF;
sd->gain = GAIN_DEF;
return 0;
}
static void tv_8532_setReg(struct gspca_dev *gspca_dev)
{
reg_w1(gspca_dev, R3B_Test3, 0x0a); /* Test0Sel = 10 */
/******************************************************/
reg_w1(gspca_dev, R0E_AD_HEIGHTL, 0x90);
reg_w1(gspca_dev, R0F_AD_HEIGHTH, 0x01);
reg_w2(gspca_dev, R1C_AD_EXPOSE_TIMEL, 0x018f);
reg_w1(gspca_dev, R10_AD_COL_BEGINL, 0x44);
/* begin active line */
reg_w1(gspca_dev, R11_AD_COL_BEGINH, 0x00);
/* mirror and digital gain */
reg_w1(gspca_dev, R14_AD_ROW_BEGINL, 0x0a);
reg_w1(gspca_dev, R94_AD_BITCONTROL, 0x02);
reg_w1(gspca_dev, R91_AD_SLOPEREG, 0x00);
reg_w1(gspca_dev, R00_PART_CONTROL, LATENT_CHANGE | EXPO_CHANGE);
/* = 0x84 */
}
/* this function is called at probe and resume time */
static int sd_init(struct gspca_dev *gspca_dev)
{
tv_8532WriteEEprom(gspca_dev);
return 0;
}
static void setexposure(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
reg_w2(gspca_dev, R1C_AD_EXPOSE_TIMEL, sd->exposure);
reg_w1(gspca_dev, R00_PART_CONTROL, LATENT_CHANGE | EXPO_CHANGE);
/* 0x84 */
}
static void setgain(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
reg_w2(gspca_dev, R20_GAIN_G1L, sd->gain);
reg_w2(gspca_dev, R22_GAIN_RL, sd->gain);
reg_w2(gspca_dev, R24_GAIN_BL, sd->gain);
reg_w2(gspca_dev, R26_GAIN_G2L, sd->gain);
}
/* -- start the camera -- */
static int sd_start(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
reg_w1(gspca_dev, R0C_AD_WIDTHL, 0xe8); /* 0x20; 0x0c */
reg_w1(gspca_dev, R0D_AD_WIDTHH, 0x03);
/************************************************/
reg_w1(gspca_dev, R28_QUANT, 0x90);
/* 0x72 compressed mode 0x28 */
if (gspca_dev->cam.cam_mode[(int) gspca_dev->curr_mode].priv) {
/* 176x144 */
reg_w1(gspca_dev, R29_LINE, 0x41);
/* CIF - 2 lines/packet */
} else {
/* 352x288 */
reg_w1(gspca_dev, R29_LINE, 0x81);
/* CIF - 2 lines/packet */
}
/************************************************/
reg_w1(gspca_dev, R2C_POLARITY, 0x10); /* slow clock */
reg_w1(gspca_dev, R2D_POINT, 0x14);
reg_w1(gspca_dev, R2E_POINTH, 0x01);
reg_w1(gspca_dev, R2F_POINTB, 0x12);
reg_w1(gspca_dev, R30_POINTBH, 0x01);
tv_8532_setReg(gspca_dev);
setexposure(gspca_dev);
setgain(gspca_dev);
/************************************************/
reg_w1(gspca_dev, R31_UPD, 0x01); /* update registers */
msleep(200);
reg_w1(gspca_dev, R31_UPD, 0x00); /* end update */
gspca_dev->empty_packet = 0; /* check the empty packets */
sd->packet = 0; /* ignore the first packets */
return 0;
}
static void sd_stopN(struct gspca_dev *gspca_dev)
{
reg_w1(gspca_dev, R3B_Test3, 0x0b); /* Test0Sel = 11 = GPIO */
}
static void sd_pkt_scan(struct gspca_dev *gspca_dev,
u8 *data, /* isoc packet */
int len) /* iso packet length */
{
struct sd *sd = (struct sd *) gspca_dev;
int packet_type0, packet_type1;
packet_type0 = packet_type1 = INTER_PACKET;
if (gspca_dev->empty_packet) {
gspca_dev->empty_packet = 0;
sd->packet = gspca_dev->height / 2;
packet_type0 = FIRST_PACKET;
} else if (sd->packet == 0)
return; /* 2 more lines in 352x288 ! */
sd->packet--;
if (sd->packet == 0)
packet_type1 = LAST_PACKET;
/* each packet contains:
* - header 2 bytes
* - RGRG line
* - 4 bytes
* - GBGB line
* - 4 bytes
*/
gspca_frame_add(gspca_dev, packet_type0,
data + 2, gspca_dev->width);
gspca_frame_add(gspca_dev, packet_type1,
data + gspca_dev->width + 5, gspca_dev->width);
}
static int sd_setexposure(struct gspca_dev *gspca_dev, __s32 val)
{
struct sd *sd = (struct sd *) gspca_dev;
sd->exposure = val;
if (gspca_dev->streaming)
setexposure(gspca_dev);
return 0;
}
static int sd_getexposure(struct gspca_dev *gspca_dev, __s32 *val)
{
struct sd *sd = (struct sd *) gspca_dev;
*val = sd->exposure;
return 0;
}
static int sd_setgain(struct gspca_dev *gspca_dev, __s32 val)
{
struct sd *sd = (struct sd *) gspca_dev;
sd->gain = val;
if (gspca_dev->streaming)
setgain(gspca_dev);
return 0;
}
static int sd_getgain(struct gspca_dev *gspca_dev, __s32 *val)
{
struct sd *sd = (struct sd *) gspca_dev;
*val = sd->gain;
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,
.pkt_scan = sd_pkt_scan,
};
/* -- module initialisation -- */
static const __devinitdata struct usb_device_id device_table[] = {
{USB_DEVICE(0x046d, 0x0920)},
{USB_DEVICE(0x046d, 0x0921)},
{USB_DEVICE(0x0545, 0x808b)},
{USB_DEVICE(0x0545, 0x8333)},
{USB_DEVICE(0x0923, 0x010f)},
{}
};
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 insert / remove -- */
static int __init sd_mod_init(void)
{
int ret;
ret = usb_register(&sd_driver);
if (ret < 0)
return ret;
PDEBUG(D_PROBE, "registered");
return 0;
}
static void __exit sd_mod_exit(void)
{
usb_deregister(&sd_driver);
PDEBUG(D_PROBE, "deregistered");
}
module_init(sd_mod_init);
module_exit(sd_mod_exit);
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