diff options
| -rw-r--r-- | drivers/media/video/tvp5150.c | 95 |
1 files changed, 67 insertions, 28 deletions
diff --git a/drivers/media/video/tvp5150.c b/drivers/media/video/tvp5150.c index b7867427e5c..0d897cb1774 100644 --- a/drivers/media/video/tvp5150.c +++ b/drivers/media/video/tvp5150.c @@ -61,13 +61,20 @@ static int tvp5150_read(struct v4l2_subdev *sd, unsigned char addr) int rc; buffer[0] = addr; - if (1 != (rc = i2c_master_send(c, buffer, 1))) - v4l2_dbg(0, debug, sd, "i2c i/o error: rc == %d (should be 1)\n", rc); + + rc = i2c_master_send(c, buffer, 1); + if (rc < 0) { + v4l2_err(sd, "i2c i/o error: rc == %d (should be 1)\n", rc); + return rc; + } msleep(10); - if (1 != (rc = i2c_master_recv(c, buffer, 1))) - v4l2_dbg(0, debug, sd, "i2c i/o error: rc == %d (should be 1)\n", rc); + rc = i2c_master_recv(c, buffer, 1); + if (rc < 0) { + v4l2_err(sd, "i2c i/o error: rc == %d (should be 1)\n", rc); + return rc; + } v4l2_dbg(2, debug, sd, "tvp5150: read 0x%02x = 0x%02x\n", addr, buffer[0]); @@ -279,6 +286,11 @@ static inline void tvp5150_selmux(struct v4l2_subdev *sd) * For Composite and TV, it should be the reverse */ val = tvp5150_read(sd, TVP5150_MISC_CTL); + if (val < 0) { + v4l2_err(sd, "%s: failed with error = %d\n", __func__, val); + return; + } + if (decoder->input == TVP5150_SVIDEO) val = (val & ~0x40) | 0x10; else @@ -676,6 +688,7 @@ static int tvp5150_get_vbi(struct v4l2_subdev *sd, v4l2_std_id std = decoder->norm; u8 reg; int pos, type = 0; + int i, ret = 0; if (std == V4L2_STD_ALL) { v4l2_err(sd, "VBI can't be configured without knowing number of lines\n"); @@ -690,13 +703,17 @@ static int tvp5150_get_vbi(struct v4l2_subdev *sd, reg = ((line - 6) << 1) + TVP5150_LINE_MODE_INI; - pos = tvp5150_read(sd, reg) & 0x0f; - if (pos < 0x0f) - type = regs[pos].type.vbi_type; - - pos = tvp5150_read(sd, reg + 1) & 0x0f; - if (pos < 0x0f) - type |= regs[pos].type.vbi_type; + for (i = 0; i <= 1; i++) { + ret = tvp5150_read(sd, reg + i); + if (ret < 0) { + v4l2_err(sd, "%s: failed with error = %d\n", + __func__, ret); + return 0; + } + pos = ret & 0x0f; + if (pos < 0x0f) + type |= regs[pos].type.vbi_type; + } return type; } @@ -1031,13 +1048,21 @@ static int tvp5150_g_chip_ident(struct v4l2_subdev *sd, #ifdef CONFIG_VIDEO_ADV_DEBUG static int tvp5150_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg) { + int res; + struct i2c_client *client = v4l2_get_subdevdata(sd); if (!v4l2_chip_match_i2c_client(client, ®->match)) return -EINVAL; if (!capable(CAP_SYS_ADMIN)) return -EPERM; - reg->val = tvp5150_read(sd, reg->reg & 0xff); + res = tvp5150_read(sd, reg->reg & 0xff); + if (res < 0) { + v4l2_err(sd, "%s: failed with error = %d\n", __func__, res); + return res; + } + + reg->val = res; reg->size = 1; return 0; } @@ -1126,7 +1151,8 @@ static int tvp5150_probe(struct i2c_client *c, { struct tvp5150 *core; struct v4l2_subdev *sd; - u8 msb_id, lsb_id, msb_rom, lsb_rom; + int tvp5150_id[4]; + int i, res; /* Check if the adapter supports the needed features */ if (!i2c_check_functionality(c->adapter, @@ -1139,26 +1165,37 @@ static int tvp5150_probe(struct i2c_client *c, } sd = &core->sd; v4l2_i2c_subdev_init(sd, c, &tvp5150_ops); + + /* + * Read consequent registers - TVP5150_MSB_DEV_ID, TVP5150_LSB_DEV_ID, + * TVP5150_ROM_MAJOR_VER, TVP5150_ROM_MINOR_VER + */ + for (i = 0; i < 4; i++) { + res = tvp5150_read(sd, TVP5150_MSB_DEV_ID + i); + if (res < 0) + goto free_core; + tvp5150_id[i] = res; + } + v4l_info(c, "chip found @ 0x%02x (%s)\n", c->addr << 1, c->adapter->name); - msb_id = tvp5150_read(sd, TVP5150_MSB_DEV_ID); - lsb_id = tvp5150_read(sd, TVP5150_LSB_DEV_ID); - msb_rom = tvp5150_read(sd, TVP5150_ROM_MAJOR_VER); - lsb_rom = tvp5150_read(sd, TVP5150_ROM_MINOR_VER); - - if (msb_rom == 4 && lsb_rom == 0) { /* Is TVP5150AM1 */ - v4l2_info(sd, "tvp%02x%02xam1 detected.\n", msb_id, lsb_id); + if (tvp5150_id[2] == 4 && tvp5150_id[3] == 0) { /* Is TVP5150AM1 */ + v4l2_info(sd, "tvp%02x%02xam1 detected.\n", + tvp5150_id[0], tvp5150_id[1]); /* ITU-T BT.656.4 timing */ tvp5150_write(sd, TVP5150_REV_SELECT, 0); } else { - if (msb_rom == 3 || lsb_rom == 0x21) { /* Is TVP5150A */ - v4l2_info(sd, "tvp%02x%02xa detected.\n", msb_id, lsb_id); + /* Is TVP5150A */ + if (tvp5150_id[2] == 3 || tvp5150_id[3] == 0x21) { + v4l2_info(sd, "tvp%02x%02xa detected.\n", + tvp5150_id[2], tvp5150_id[3]); } else { v4l2_info(sd, "*** unknown tvp%02x%02x chip detected.\n", - msb_id, lsb_id); - v4l2_info(sd, "*** Rom ver is %d.%d\n", msb_rom, lsb_rom); + tvp5150_id[2], tvp5150_id[3]); + v4l2_info(sd, "*** Rom ver is %d.%d\n", + tvp5150_id[2], tvp5150_id[3]); } } @@ -1177,11 +1214,9 @@ static int tvp5150_probe(struct i2c_client *c, V4L2_CID_HUE, -128, 127, 1, 0); sd->ctrl_handler = &core->hdl; if (core->hdl.error) { - int err = core->hdl.error; - + res = core->hdl.error; v4l2_ctrl_handler_free(&core->hdl); - kfree(core); - return err; + goto free_core; } v4l2_ctrl_handler_setup(&core->hdl); @@ -1197,6 +1232,10 @@ static int tvp5150_probe(struct i2c_client *c, if (debug > 1) tvp5150_log_status(sd); return 0; + +free_core: + kfree(core); + return res; } static int tvp5150_remove(struct i2c_client *c) |