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V4L/DVB: gspca - pac7311: Use usb_err to propagate USB errors
Signed-off-by: Jean-Francois Moine <moinejf@free.fr> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Jean-Francois Moine
Mauro Carvalho Chehab
parent
be927befd0
commit
14799f6cf3
@ -258,12 +258,14 @@ static const __u8 page4_7311[] = {
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0x23, 0x28, 0x04, 0x11, 0x00, 0x00
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};
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static int reg_w_buf(struct gspca_dev *gspca_dev,
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static void reg_w_buf(struct gspca_dev *gspca_dev,
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__u8 index,
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const char *buffer, int len)
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{
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int ret;
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if (gspca_dev->usb_err < 0)
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return;
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memcpy(gspca_dev->usb_buf, buffer, len);
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ret = usb_control_msg(gspca_dev->dev,
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usb_sndctrlpipe(gspca_dev->dev, 0),
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@ -272,20 +274,23 @@ static int reg_w_buf(struct gspca_dev *gspca_dev,
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0, /* value */
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index, gspca_dev->usb_buf, len,
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500);
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if (ret < 0)
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if (ret < 0) {
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PDEBUG(D_ERR, "reg_w_buf(): "
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"Failed to write registers to index 0x%x, error %i",
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index, ret);
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return ret;
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gspca_dev->usb_err = ret;
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}
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}
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static int reg_w(struct gspca_dev *gspca_dev,
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static void reg_w(struct gspca_dev *gspca_dev,
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__u8 index,
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__u8 value)
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{
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int ret;
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if (gspca_dev->usb_err < 0)
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return;
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gspca_dev->usb_buf[0] = value;
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ret = usb_control_msg(gspca_dev->dev,
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usb_sndctrlpipe(gspca_dev->dev, 0),
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@ -293,32 +298,32 @@ static int reg_w(struct gspca_dev *gspca_dev,
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USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
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0, index, gspca_dev->usb_buf, 1,
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500);
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if (ret < 0)
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if (ret < 0) {
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PDEBUG(D_ERR, "reg_w(): "
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"Failed to write register to index 0x%x, value 0x%x, error %i",
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index, value, ret);
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return ret;
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gspca_dev->usb_err = ret;
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}
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}
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static int reg_w_seq(struct gspca_dev *gspca_dev,
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static void reg_w_seq(struct gspca_dev *gspca_dev,
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const __u8 *seq, int len)
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{
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int ret = 0;
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while (--len >= 0) {
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if (0 <= ret)
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ret = reg_w(gspca_dev, seq[0], seq[1]);
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reg_w(gspca_dev, seq[0], seq[1]);
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seq += 2;
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}
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return ret;
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}
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/* load the beginning of a page */
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static int reg_w_page(struct gspca_dev *gspca_dev,
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static void reg_w_page(struct gspca_dev *gspca_dev,
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const __u8 *page, int len)
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{
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int index;
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int ret = 0;
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if (gspca_dev->usb_err < 0)
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return;
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for (index = 0; index < len; index++) {
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if (page[index] == SKIP) /* skip this index */
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continue;
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@ -334,52 +339,47 @@ static int reg_w_page(struct gspca_dev *gspca_dev,
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"Failed to write register to index 0x%x, "
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"value 0x%x, error %i",
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index, page[index], ret);
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gspca_dev->usb_err = ret;
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break;
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}
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}
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return ret;
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}
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/* output a variable sequence */
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static int reg_w_var(struct gspca_dev *gspca_dev,
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static void reg_w_var(struct gspca_dev *gspca_dev,
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const __u8 *seq,
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const __u8 *page4, unsigned int page4_len)
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{
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int index, len;
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int ret = 0;
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for (;;) {
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index = *seq++;
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len = *seq++;
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switch (len) {
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case END_OF_SEQUENCE:
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return ret;
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return;
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case LOAD_PAGE4:
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ret = reg_w_page(gspca_dev, page4, page4_len);
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reg_w_page(gspca_dev, page4, page4_len);
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break;
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default:
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if (len > USB_BUF_SZ) {
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PDEBUG(D_ERR|D_STREAM,
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"Incorrect variable sequence");
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return -EINVAL;
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return;
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}
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while (len > 0) {
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if (len < 8) {
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ret = reg_w_buf(gspca_dev,
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reg_w_buf(gspca_dev,
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index, seq, len);
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if (ret < 0)
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return ret;
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seq += len;
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break;
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}
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ret = reg_w_buf(gspca_dev, index, seq, 8);
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reg_w_buf(gspca_dev, index, seq, 8);
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seq += 8;
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index += 8;
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len -= 8;
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}
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}
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if (ret < 0)
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return ret;
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}
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/* not reached */
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}
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@ -407,46 +407,36 @@ static int sd_config(struct gspca_dev *gspca_dev,
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}
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/* This function is used by pac7311 only */
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static int setcontrast(struct gspca_dev *gspca_dev)
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static void setcontrast(struct gspca_dev *gspca_dev)
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{
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struct sd *sd = (struct sd *) gspca_dev;
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int ret;
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ret = reg_w(gspca_dev, 0xff, 0x04);
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if (0 <= ret)
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ret = reg_w(gspca_dev, 0x10, sd->contrast >> 4);
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reg_w(gspca_dev, 0xff, 0x04);
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reg_w(gspca_dev, 0x10, sd->contrast >> 4);
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/* load registers to sensor (Bit 0, auto clear) */
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if (0 <= ret)
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ret = reg_w(gspca_dev, 0x11, 0x01);
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return ret;
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reg_w(gspca_dev, 0x11, 0x01);
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}
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static int setgain(struct gspca_dev *gspca_dev)
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static void setgain(struct gspca_dev *gspca_dev)
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{
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struct sd *sd = (struct sd *) gspca_dev;
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int gain = GAIN_MAX - sd->gain;
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int ret;
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if (gain < 1)
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gain = 1;
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else if (gain > 245)
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gain = 245;
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ret = reg_w(gspca_dev, 0xff, 0x04); /* page 4 */
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if (0 <= ret)
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ret = reg_w(gspca_dev, 0x0e, 0x00);
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if (0 <= ret)
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ret = reg_w(gspca_dev, 0x0f, gain);
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reg_w(gspca_dev, 0xff, 0x04); /* page 4 */
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reg_w(gspca_dev, 0x0e, 0x00);
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reg_w(gspca_dev, 0x0f, gain);
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/* load registers to sensor (Bit 0, auto clear) */
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if (0 <= ret)
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ret = reg_w(gspca_dev, 0x11, 0x01);
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return ret;
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reg_w(gspca_dev, 0x11, 0x01);
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}
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static int setexposure(struct gspca_dev *gspca_dev)
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static void setexposure(struct gspca_dev *gspca_dev)
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{
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struct sd *sd = (struct sd *) gspca_dev;
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int ret;
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__u8 reg;
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/* register 2 of frame 3/4 contains the clock divider configuring the
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@ -458,93 +448,72 @@ static int setexposure(struct gspca_dev *gspca_dev)
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else if (reg > 63)
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reg = 63;
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ret = reg_w(gspca_dev, 0xff, 0x04); /* page 4 */
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if (0 <= ret)
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ret = reg_w(gspca_dev, 0x02, reg);
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reg_w(gspca_dev, 0xff, 0x04); /* page 4 */
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reg_w(gspca_dev, 0x02, reg);
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/* Page 1 register 8 must always be 0x08 except when not in
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640x480 mode and Page3/4 reg 2 <= 3 then it must be 9 */
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if (0 <= ret)
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ret = reg_w(gspca_dev, 0xff, 0x01);
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reg_w(gspca_dev, 0xff, 0x01);
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if (gspca_dev->cam.cam_mode[(int)gspca_dev->curr_mode].priv &&
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reg <= 3) {
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if (0 <= ret)
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ret = reg_w(gspca_dev, 0x08, 0x09);
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reg_w(gspca_dev, 0x08, 0x09);
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} else {
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if (0 <= ret)
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ret = reg_w(gspca_dev, 0x08, 0x08);
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reg_w(gspca_dev, 0x08, 0x08);
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}
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/* load registers to sensor (Bit 0, auto clear) */
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if (0 <= ret)
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ret = reg_w(gspca_dev, 0x11, 0x01);
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return ret;
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reg_w(gspca_dev, 0x11, 0x01);
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}
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static int sethvflip(struct gspca_dev *gspca_dev)
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static void sethvflip(struct gspca_dev *gspca_dev)
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{
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struct sd *sd = (struct sd *) gspca_dev;
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int ret;
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__u8 data;
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ret = reg_w(gspca_dev, 0xff, 0x04); /* page 4 */
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reg_w(gspca_dev, 0xff, 0x04); /* page 4 */
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data = (sd->hflip ? 0x04 : 0x00) | (sd->vflip ? 0x08 : 0x00);
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if (0 <= ret)
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ret = reg_w(gspca_dev, 0x21, data);
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reg_w(gspca_dev, 0x21, data);
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/* load registers to sensor (Bit 0, auto clear) */
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if (0 <= ret)
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ret = reg_w(gspca_dev, 0x11, 0x01);
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return ret;
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reg_w(gspca_dev, 0x11, 0x01);
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}
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/* this function is called at probe and resume time for pac7311 */
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static int sd_init(struct gspca_dev *gspca_dev)
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{
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return reg_w_seq(gspca_dev, init_7311, sizeof(init_7311)/2);
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reg_w_seq(gspca_dev, init_7311, sizeof(init_7311)/2);
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return gspca_dev->usb_err;
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}
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static int sd_start(struct gspca_dev *gspca_dev)
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{
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struct sd *sd = (struct sd *) gspca_dev;
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int ret;
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sd->sof_read = 0;
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ret = reg_w_var(gspca_dev, start_7311,
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reg_w_var(gspca_dev, start_7311,
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page4_7311, sizeof(page4_7311));
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if (0 <= ret)
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ret = setcontrast(gspca_dev);
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if (0 <= ret)
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ret = setgain(gspca_dev);
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if (0 <= ret)
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ret = setexposure(gspca_dev);
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if (0 <= ret)
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ret = sethvflip(gspca_dev);
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setcontrast(gspca_dev);
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setgain(gspca_dev);
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setexposure(gspca_dev);
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sethvflip(gspca_dev);
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/* set correct resolution */
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switch (gspca_dev->cam.cam_mode[(int) gspca_dev->curr_mode].priv) {
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case 2: /* 160x120 pac7311 */
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if (0 <= ret)
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ret = reg_w(gspca_dev, 0xff, 0x01);
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if (0 <= ret)
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ret = reg_w(gspca_dev, 0x17, 0x20);
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if (0 <= ret)
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ret = reg_w(gspca_dev, 0x87, 0x10);
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reg_w(gspca_dev, 0xff, 0x01);
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reg_w(gspca_dev, 0x17, 0x20);
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reg_w(gspca_dev, 0x87, 0x10);
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break;
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case 1: /* 320x240 pac7311 */
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if (0 <= ret)
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ret = reg_w(gspca_dev, 0xff, 0x01);
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if (0 <= ret)
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ret = reg_w(gspca_dev, 0x17, 0x30);
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if (0 <= ret)
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ret = reg_w(gspca_dev, 0x87, 0x11);
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reg_w(gspca_dev, 0xff, 0x01);
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reg_w(gspca_dev, 0x17, 0x30);
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reg_w(gspca_dev, 0x87, 0x11);
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break;
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case 0: /* 640x480 */
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if (0 <= ret)
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ret = reg_w(gspca_dev, 0xff, 0x01);
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if (0 <= ret)
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ret = reg_w(gspca_dev, 0x17, 0x00);
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if (0 <= ret)
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ret = reg_w(gspca_dev, 0x87, 0x12);
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reg_w(gspca_dev, 0xff, 0x01);
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reg_w(gspca_dev, 0x17, 0x00);
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reg_w(gspca_dev, 0x87, 0x12);
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break;
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}
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@ -553,37 +522,24 @@ static int sd_start(struct gspca_dev *gspca_dev)
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atomic_set(&sd->avg_lum, -1);
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/* start stream */
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if (0 <= ret)
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ret = reg_w(gspca_dev, 0xff, 0x01);
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if (0 <= ret)
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ret = reg_w(gspca_dev, 0x78, 0x05);
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reg_w(gspca_dev, 0xff, 0x01);
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reg_w(gspca_dev, 0x78, 0x05);
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return ret;
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return gspca_dev->usb_err;
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}
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static void sd_stopN(struct gspca_dev *gspca_dev)
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{
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int ret;
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ret = reg_w(gspca_dev, 0xff, 0x04);
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if (0 <= ret)
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ret = reg_w(gspca_dev, 0x27, 0x80);
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if (0 <= ret)
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ret = reg_w(gspca_dev, 0x28, 0xca);
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if (0 <= ret)
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ret = reg_w(gspca_dev, 0x29, 0x53);
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if (0 <= ret)
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ret = reg_w(gspca_dev, 0x2a, 0x0e);
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if (0 <= ret)
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ret = reg_w(gspca_dev, 0xff, 0x01);
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if (0 <= ret)
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ret = reg_w(gspca_dev, 0x3e, 0x20);
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if (0 <= ret)
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ret = reg_w(gspca_dev, 0x78, 0x44); /* Bit_0=start stream, Bit_6=LED */
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if (0 <= ret)
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ret = reg_w(gspca_dev, 0x78, 0x44); /* Bit_0=start stream, Bit_6=LED */
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if (0 <= ret)
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ret = reg_w(gspca_dev, 0x78, 0x44); /* Bit_0=start stream, Bit_6=LED */
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reg_w(gspca_dev, 0xff, 0x04);
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reg_w(gspca_dev, 0x27, 0x80);
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reg_w(gspca_dev, 0x28, 0xca);
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reg_w(gspca_dev, 0x29, 0x53);
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reg_w(gspca_dev, 0x2a, 0x0e);
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reg_w(gspca_dev, 0xff, 0x01);
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reg_w(gspca_dev, 0x3e, 0x20);
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reg_w(gspca_dev, 0x78, 0x44); /* Bit_0=start stream, Bit_6=LED */
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reg_w(gspca_dev, 0x78, 0x44); /* Bit_0=start stream, Bit_6=LED */
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reg_w(gspca_dev, 0x78, 0x44); /* Bit_0=start stream, Bit_6=LED */
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}
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/* called on streamoff with alt 0 and on disconnect for 7311 */
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@ -728,7 +684,7 @@ static int sd_setcontrast(struct gspca_dev *gspca_dev, __s32 val)
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if (gspca_dev->streaming) {
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setcontrast(gspca_dev);
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}
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return 0;
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return gspca_dev->usb_err;
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}
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static int sd_getcontrast(struct gspca_dev *gspca_dev, __s32 *val)
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@ -746,7 +702,7 @@ static int sd_setgain(struct gspca_dev *gspca_dev, __s32 val)
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sd->gain = val;
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if (gspca_dev->streaming)
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setgain(gspca_dev);
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return 0;
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return gspca_dev->usb_err;
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}
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static int sd_getgain(struct gspca_dev *gspca_dev, __s32 *val)
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@ -764,7 +720,7 @@ static int sd_setexposure(struct gspca_dev *gspca_dev, __s32 val)
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sd->exposure = val;
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if (gspca_dev->streaming)
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setexposure(gspca_dev);
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return 0;
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return gspca_dev->usb_err;
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}
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static int sd_getexposure(struct gspca_dev *gspca_dev, __s32 *val)
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@ -795,7 +751,7 @@ static int sd_setautogain(struct gspca_dev *gspca_dev, __s32 val)
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}
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}
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return 0;
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return gspca_dev->usb_err;
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}
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static int sd_getautogain(struct gspca_dev *gspca_dev, __s32 *val)
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@ -813,7 +769,7 @@ static int sd_sethflip(struct gspca_dev *gspca_dev, __s32 val)
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sd->hflip = val;
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if (gspca_dev->streaming)
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sethvflip(gspca_dev);
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return 0;
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return gspca_dev->usb_err;
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}
|
||||
|
||||
static int sd_gethflip(struct gspca_dev *gspca_dev, __s32 *val)
|
||||
@ -831,7 +787,7 @@ static int sd_setvflip(struct gspca_dev *gspca_dev, __s32 val)
|
||||
sd->vflip = val;
|
||||
if (gspca_dev->streaming)
|
||||
sethvflip(gspca_dev);
|
||||
return 0;
|
||||
return gspca_dev->usb_err;
|
||||
}
|
||||
|
||||
static int sd_getvflip(struct gspca_dev *gspca_dev, __s32 *val)
|
||||
|
||||
Loading…
Reference in New Issue
Block a user