Hi Marco, On 8/30/19 12:16 PM, Marco Felsch wrote: > The tvp5150 accepts NTSC(M,J,4.43), PAL (B,D,G,H,I,M,N) and SECAM video > data and is able to auto-detect the input signal. The auto-detection > does not work if the connector does not receive an input signal and the > tvp5150 might not be configured correctly. This misconfiguration leads > into wrong decoded video streams if the tvp5150 gets powered on before > the video signal is present. > > Limit the supported sdtv standards according to the actual selected > connector to avoid a misconfiguration. > > Signed-off-by: Marco Felsch <m.felsch@xxxxxxxxxxxxxx> checkpatch gave a bunch of warnings: WARNING: line over 80 characters #97: FILE: drivers/media/i2c/tvp5150.c:1393: + decoder->cur_connector->base.connector.analog.sdtv_stds); WARNING: line over 80 characters #107: FILE: drivers/media/i2c/tvp5150.c:1613: + decoder->connectors[i].base.connector.analog.sdtv_stds); CHECK: Alignment should match open parenthesis #107: FILE: drivers/media/i2c/tvp5150.c:1613: + tvp5150_s_std(sd, + decoder->connectors[i].base.connector.analog.sdtv_stds); I think it would be best to introduce a local pointer to decoder->connectors[i].base.connector.analog. Regards, Hans > --- > [1] https://patchwork.kernel.org/cover/10794703/ > > v8: > - adapt commit message > - fix rebasing issue > - apdapt to new v4l2_fwnode_connector_analog naming > - fix cur_connector update during tvp5150_link_setup() > -> Only update if we have of-connectors. > - fix supported_stds detection during tvp5150_s_std() > -> use connectors_num to detect of-connectors presence > > v5: > - probe() initialize supported tv-norms according the given connectors > if they are available. > - check if media-controller is used. Don't limit the norm if it isn't > used. > - add more logic to be smarter during connector changing so it is > intuitiver for the user space. > > v2-v4: > - nothing since the patch was squashed from series [1] into this > series. > > drivers/media/i2c/tvp5150.c | 78 ++++++++++++++++++++++++++++++++++++- > 1 file changed, 76 insertions(+), 2 deletions(-) > > diff --git a/drivers/media/i2c/tvp5150.c b/drivers/media/i2c/tvp5150.c > index d7079809f33f..da7e7fe16f89 100644 > --- a/drivers/media/i2c/tvp5150.c > +++ b/drivers/media/i2c/tvp5150.c > @@ -32,6 +32,13 @@ > #define TVP5150_MBUS_FMT MEDIA_BUS_FMT_UYVY8_2X8 > #define TVP5150_FIELD V4L2_FIELD_ALTERNATE > #define TVP5150_COLORSPACE V4L2_COLORSPACE_SMPTE170M > +#define TVP5150_STD_MASK (V4L2_STD_NTSC | \ > + V4L2_STD_NTSC_443 | \ > + V4L2_STD_PAL | \ > + V4L2_STD_PAL_M | \ > + V4L2_STD_PAL_N | \ > + V4L2_STD_PAL_Nc | \ > + V4L2_STD_SECAM) > > #define TVP5150_MAX_CONNECTORS 3 /* Check dt-bindings for more information */ > > @@ -64,6 +71,7 @@ struct tvp5150 { > > struct media_pad pads[TVP5150_NUM_PADS]; > struct tvp5150_connector connectors[TVP5150_MAX_CONNECTORS]; > + struct tvp5150_connector *cur_connector; > unsigned int connectors_num; > > struct v4l2_ctrl_handler hdl; > @@ -783,17 +791,33 @@ static int tvp5150_g_std(struct v4l2_subdev *sd, v4l2_std_id *std) > static int tvp5150_s_std(struct v4l2_subdev *sd, v4l2_std_id std) > { > struct tvp5150 *decoder = to_tvp5150(sd); > + struct tvp5150_connector *cur_con = decoder->cur_connector; > + v4l2_std_id supported_stds; > > if (decoder->norm == std) > return 0; > > + /* In case of no of-connectors are available no limitations are made */ > + if (!decoder->connectors_num) > + supported_stds = V4L2_STD_ALL; > + else > + supported_stds = cur_con->base.connector.analog.sdtv_stds; > + > + /* > + * Check if requested std or group of std's is/are supported by the > + * connector. > + */ > + if ((supported_stds & std) == 0) > + return -EINVAL; > + > /* Change cropping height limits */ > if (std & V4L2_STD_525_60) > decoder->rect.height = TVP5150_V_MAX_525_60; > else > decoder->rect.height = TVP5150_V_MAX_OTHERS; > > - decoder->norm = std; > + /* Set only the specific supported std in case of group of std's. */ > + decoder->norm = supported_stds & std; > > return tvp5150_set_std(sd, std); > } > @@ -1331,6 +1355,8 @@ static int tvp5150_link_setup(struct media_entity *entity, > TVP5150_BLACK_SCREEN, 0); > > if (flags & MEDIA_LNK_FL_ENABLED) { > + u32 new_norm; > + > /* > * S-Video connector is conneted to both ports AIP1A and AIP1B. > * Both links must be enabled in one-shot regardless which link > @@ -1342,6 +1368,29 @@ static int tvp5150_link_setup(struct media_entity *entity, > if (err) > return err; > } > + > + if (!decoder->connectors_num) > + return 0; > + > + /* Update the current connector */ > + decoder->cur_connector = > + container_of(remote, struct tvp5150_connector, pad); > + > + /* > + * Do nothing if the new connector supports the same tv-norms as > + * the old one. > + */ > + new_norm = decoder->norm & > + decoder->cur_connector->base.connector.analog.sdtv_stds; > + if (decoder->norm == new_norm) > + return 0; > + > + /* > + * Fallback to the new connector tv-norms if we can't find any > + * common between the current tv-norm and the new one. > + */ > + tvp5150_s_std(sd, new_norm ? new_norm : > + decoder->cur_connector->base.connector.analog.sdtv_stds); > } > > return 0; > @@ -1559,6 +1608,9 @@ static int tvp5150_registered(struct v4l2_subdev *sd) > TVP5150_COMPOSITE1; > > tvp5150_selmux(sd); > + decoder->cur_connector = &decoder->connectors[i]; > + tvp5150_s_std(sd, > + decoder->connectors[i].base.connector.analog.sdtv_stds); > } > } > > @@ -1848,6 +1900,13 @@ tvp5150_add_connector(struct tvp5150 *decoder, struct device_node *np, > goto err; > } > > + if (!(vc->connector.analog.sdtv_stds & TVP5150_STD_MASK)) { > + dev_err(dev, "Unsupported tv-norm on connector %s\n", > + remote_np->name); > + ret = -EINVAL; > + goto err; > + } > + > c->ent.flags = MEDIA_ENT_FL_CONNECTOR; > c->ent.name = vc->label; > c->ent.name = kasprintf(GFP_KERNEL, "%s %s", remote_np->name, > @@ -1945,6 +2004,7 @@ static int tvp5150_probe(struct i2c_client *c) > struct v4l2_subdev *sd; > struct device_node *np = c->dev.of_node; > struct regmap *map; > + unsigned int i; > int res; > > /* Check if the adapter supports the needed features */ > @@ -1989,7 +2049,21 @@ static int tvp5150_probe(struct i2c_client *c) > if (res < 0) > return res; > > - core->norm = V4L2_STD_ALL; /* Default is autodetect */ > + /* > + * Iterate over all available connectors in case they are supported and > + * successfully parsed. Fallback to default autodetect in case they > + * aren't supported. > + */ > + for (i = 0; i < core->connectors_num; i++) { > + struct v4l2_fwnode_connector *vc; > + > + vc = &core->connectors[i].base; > + core->norm |= vc->connector.analog.sdtv_stds; > + } > + > + if (!core->connectors_num) > + core->norm = V4L2_STD_ALL; > + > core->detected_norm = V4L2_STD_UNKNOWN; > core->input = TVP5150_COMPOSITE1; > core->enable = true; >
