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V4L/DVB (10432): gspca - vc032x: Cleanup source, optimize and check i2c_write.
Signed-off-by: Jean-Francois Moine <moinejf@free.fr> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
parent
8d538699e7
commit
49796e4059
@ -1927,44 +1927,40 @@ static void reg_w(struct usb_device *dev,
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500);
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}
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static void read_sensor_register(struct gspca_dev *gspca_dev,
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__u16 address, __u16 *value)
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static u16 read_sensor_register(struct gspca_dev *gspca_dev,
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u16 address)
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{
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struct usb_device *dev = gspca_dev->dev;
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__u8 ldata, mdata, hdata;
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int retry = 50;
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*value = 0;
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reg_r(gspca_dev, 0xa1, 0xb33f, 1);
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/*PDEBUG(D_PROBE, " I2c Bus Busy Wait 0x%02X ", tmpvalue); */
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if (!(gspca_dev->usb_buf[0] & 0x02)) {
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PDEBUG(D_ERR, "I2c Bus Busy Wait %d",
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gspca_dev->usb_buf[0] & 0x02);
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return;
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PDEBUG(D_ERR, "I2c Bus Busy Wait %02x",
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gspca_dev->usb_buf[0]);
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return 0;
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}
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reg_w(dev, 0xa0, address, 0xb33a);
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reg_w(dev, 0xa0, 0x02, 0xb339);
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reg_r(gspca_dev, 0xa1, 0xb33b, 1);
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while (retry-- && gspca_dev->usb_buf[0]) {
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do {
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msleep(8);
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reg_r(gspca_dev, 0xa1, 0xb33b, 1);
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/* PDEBUG(D_PROBE, "Read again 0xb33b %d", tmpvalue); */
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msleep(1);
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}
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} while (retry-- && gspca_dev->usb_buf[0]);
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reg_r(gspca_dev, 0xa1, 0xb33e, 1);
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ldata = gspca_dev->usb_buf[0];
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reg_r(gspca_dev, 0xa1, 0xb33d, 1);
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mdata = gspca_dev->usb_buf[0];
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reg_r(gspca_dev, 0xa1, 0xb33c, 1);
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hdata = gspca_dev->usb_buf[0];
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PDEBUG(D_PROBE, "Read Sensor %02x%02x %02x",
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hdata, mdata, ldata);
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if (hdata != 0 && mdata != 0 && ldata != 0)
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PDEBUG(D_PROBE, "Read Sensor %02x%02x %02x",
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hdata, mdata, ldata);
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reg_r(gspca_dev, 0xa1, 0xb334, 1);
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if (gspca_dev->usb_buf[0] == 0x02)
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*value = (hdata << 8) + mdata;
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else
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*value = hdata;
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return (hdata << 8) + mdata;
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return hdata;
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}
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static int vc032x_probe_sensor(struct gspca_dev *gspca_dev)
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@ -1985,7 +1981,7 @@ static int vc032x_probe_sensor(struct gspca_dev *gspca_dev)
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reg_w(dev, 0xa0, 0x0c, 0xb309);
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reg_w(dev, 0xa0, ptsensor_info->I2cAdd, 0xb335);
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reg_w(dev, 0xa0, ptsensor_info->op, 0xb301);
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read_sensor_register(gspca_dev, ptsensor_info->IdAdd, &value);
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value = read_sensor_register(gspca_dev, ptsensor_info->IdAdd);
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if (value == ptsensor_info->VpId)
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return ptsensor_info->sensorId;
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@ -1997,13 +1993,16 @@ static int vc032x_probe_sensor(struct gspca_dev *gspca_dev)
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return -1;
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}
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static __u8 i2c_write(struct gspca_dev *gspca_dev,
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static void i2c_write(struct gspca_dev *gspca_dev,
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__u8 reg, const __u8 *val, __u8 size)
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{
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struct usb_device *dev = gspca_dev->dev;
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int retry;
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#ifdef GSPCA_DEBUG
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if (size > 3 || size < 1)
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return -EINVAL;
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return;
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#endif
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reg_r(gspca_dev, 0xa1, 0xb33f, 1);
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reg_w(dev, 0xa0, size, 0xb334);
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reg_w(dev, 0xa0, reg, 0xb33a);
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@ -2015,18 +2014,23 @@ static __u8 i2c_write(struct gspca_dev *gspca_dev,
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reg_w(dev, 0xa0, val[0], 0xb336);
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reg_w(dev, 0xa0, val[1], 0xb337);
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break;
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case 3:
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default:
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/* case 3: */
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reg_w(dev, 0xa0, val[0], 0xb336);
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reg_w(dev, 0xa0, val[1], 0xb337);
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reg_w(dev, 0xa0, val[2], 0xb338);
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break;
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default:
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reg_w(dev, 0xa0, 0x01, 0xb334);
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return -EINVAL;
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}
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reg_w(dev, 0xa0, 0x01, 0xb339);
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reg_r(gspca_dev, 0xa1, 0xb33b, 1);
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return gspca_dev->usb_buf[0] == 0;
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retry = 4;
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do {
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reg_r(gspca_dev, 0xa1, 0xb33b, 1);
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if (gspca_dev->usb_buf[0] == 0)
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break;
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msleep(20);
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} while (--retry > 0);
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if (retry <= 0)
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PDEBUG(D_ERR, "i2c_write failed");
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}
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static void put_tab_to_reg(struct gspca_dev *gspca_dev,
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@ -2051,7 +2055,7 @@ static void usb_exchange(struct gspca_dev *gspca_dev,
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return;
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case 0xcc: /* normal write */
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reg_w(dev, 0xa0, data[i][2],
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((data[i][0])<<8) | data[i][1]);
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(data[i][0]) << 8 | data[i][1]);
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break;
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case 0xaa: /* i2c op */
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i2c_write(gspca_dev, data[i][1], &data[i][2], 1);
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@ -2068,11 +2072,6 @@ static void usb_exchange(struct gspca_dev *gspca_dev,
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/*not reached*/
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}
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/*
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"GammaT"=hex:04,17,31,4f,6a,83,99,ad,bf,ce,da,e5,ee,f5,fb,ff,ff
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"MatrixT"=hex:60,f9,e5,e7,50,05,f3,e6,66
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*/
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static void vc0321_reset(struct gspca_dev *gspca_dev)
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{
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reg_w(gspca_dev->dev, 0xa0, 0x00, 0xb04d);
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@ -2176,7 +2175,7 @@ static int sd_config(struct gspca_dev *gspca_dev,
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return 0;
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}
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/* this function is called at probe and time */
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/* this function is called at probe and resume time */
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static int sd_init(struct gspca_dev *gspca_dev)
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{
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return 0;
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@ -2332,27 +2331,7 @@ static int sd_start(struct gspca_dev *gspca_dev)
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put_tab_to_reg(gspca_dev, GammaT, 17, 0xb85b);
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put_tab_to_reg(gspca_dev, GammaT, 17, 0xb86c);
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put_tab_to_reg(gspca_dev, MatrixT, 9, 0xb82c);
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/* Seem SHARPNESS */
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/*
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reg_w(gspca_dev->dev, 0xa0, 0x80, 0xb80a);
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reg_w(gspca_dev->dev, 0xa0, 0xff, 0xb80b);
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reg_w(gspca_dev->dev, 0xa0, 0xff, 0xb80e);
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*/
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/* all 0x40 ??? do nothing
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reg_w(gspca_dev->dev, 0xa0, 0x40, 0xb822);
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reg_w(gspca_dev->dev, 0xa0, 0x40, 0xb823);
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reg_w(gspca_dev->dev, 0xa0, 0x40, 0xb824);
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*/
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/* Only works for HV7131R ??
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reg_r (gspca_dev, 0xa1, 0xb881, 1);
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reg_w(gspca_dev->dev, 0xa0, 0xfe01, 0xb881);
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reg_w(gspca_dev->dev, 0xa0, 0x79, 0xb801);
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*/
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/* only hv7131r et ov7660
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reg_w(gspca_dev->dev, 0xa0, 0x20, 0xb827);
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reg_w(gspca_dev->dev, 0xa0, 0xff, 0xb826); * ISP_GAIN 80
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reg_w(gspca_dev->dev, 0xa0, 0x23, 0xb800); * ISP CTRL_BAS
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*/
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/* set the led on 0x0892 0x0896 */
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if (sd->sensor != SENSOR_PO1200) {
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reg_w(gspca_dev->dev, 0x89, 0xffff, 0xfdff);
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@ -2502,7 +2481,8 @@ static int sd_querymenu(struct gspca_dev *gspca_dev,
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case 1: /* V4L2_CID_POWER_LINE_FREQUENCY_50HZ */
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strcpy((char *) menu->name, "50 Hz");
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return 0;
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case 2: /* V4L2_CID_POWER_LINE_FREQUENCY_60HZ */
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default:
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/* case 2: * V4L2_CID_POWER_LINE_FREQUENCY_60HZ */
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strcpy((char *) menu->name, "60 Hz");
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return 0;
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}
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@ -2565,6 +2545,7 @@ static struct usb_driver sd_driver = {
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static int __init sd_mod_init(void)
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{
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int ret;
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ret = usb_register(&sd_driver);
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if (ret < 0)
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return ret;
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