ALSA: x86: hdmi: Add single_port option for compatible behavior
The recent support for the multiple PCM devices allowed user to use
multiple HDMI/DP outputs, but at the same time, the PCM stream
assignment has been changed, too. Due to that, the former PCM#0
(there was only one stream in the past) is likely assigned to a
different one (e.g. PCM#2), and it ends up with the regression when
user sticks with the fixed configuration using the device#0.
Although the multiple monitor support shouldn't matter when user
deploys the backend like PulseAudio that checks the jack detection
state, the behavior change isn't always acceptable for some users.
As a mitigation, this patch introduces an option to switch the
behavior back to the old-good-days: when the new option,
single_port=1, is passed, the driver creates only a single PCM device,
and it's assigned to the first connected one, like the earlier
versions did. The option is turned off as default still to support
the multiple monitors.
Fixes: 8a2d6ae1f7
("ALSA: x86: Register multiple PCM devices for the LPE audio card")
Reported-and-tested-by: Hubert Mantel <mantel@metadox.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
parent
fdcc968a3b
commit
7229b12f5d
|
@ -50,6 +50,7 @@
|
|||
/*standard module options for ALSA. This module supports only one card*/
|
||||
static int hdmi_card_index = SNDRV_DEFAULT_IDX1;
|
||||
static char *hdmi_card_id = SNDRV_DEFAULT_STR1;
|
||||
static bool single_port;
|
||||
|
||||
module_param_named(index, hdmi_card_index, int, 0444);
|
||||
MODULE_PARM_DESC(index,
|
||||
|
@ -57,6 +58,9 @@ MODULE_PARM_DESC(index,
|
|||
module_param_named(id, hdmi_card_id, charp, 0444);
|
||||
MODULE_PARM_DESC(id,
|
||||
"ID string for INTEL Intel HDMI Audio controller.");
|
||||
module_param(single_port, bool, 0444);
|
||||
MODULE_PARM_DESC(single_port,
|
||||
"Single-port mode (for compatibility)");
|
||||
|
||||
/*
|
||||
* ELD SA bits in the CEA Speaker Allocation data block
|
||||
|
@ -1579,7 +1583,11 @@ static irqreturn_t display_pipe_interrupt_handler(int irq, void *dev_id)
|
|||
static void notify_audio_lpe(struct platform_device *pdev, int port)
|
||||
{
|
||||
struct snd_intelhad_card *card_ctx = platform_get_drvdata(pdev);
|
||||
struct snd_intelhad *ctx = &card_ctx->pcm_ctx[port];
|
||||
struct snd_intelhad *ctx;
|
||||
|
||||
ctx = &card_ctx->pcm_ctx[single_port ? 0 : port];
|
||||
if (single_port)
|
||||
ctx->port = port;
|
||||
|
||||
schedule_work(&ctx->hdmi_audio_wq);
|
||||
}
|
||||
|
@ -1816,7 +1824,7 @@ static int hdmi_lpe_audio_probe(struct platform_device *pdev)
|
|||
init_channel_allocations();
|
||||
|
||||
card_ctx->num_pipes = pdata->num_pipes;
|
||||
card_ctx->num_ports = pdata->num_ports;
|
||||
card_ctx->num_ports = single_port ? 1 : pdata->num_ports;
|
||||
|
||||
for_each_port(card_ctx, port) {
|
||||
struct snd_intelhad *ctx = &card_ctx->pcm_ctx[port];
|
||||
|
@ -1824,7 +1832,7 @@ static int hdmi_lpe_audio_probe(struct platform_device *pdev)
|
|||
|
||||
ctx->card_ctx = card_ctx;
|
||||
ctx->dev = card_ctx->dev;
|
||||
ctx->port = port;
|
||||
ctx->port = single_port ? -1 : port;
|
||||
ctx->pipe = -1;
|
||||
|
||||
INIT_WORK(&ctx->hdmi_audio_wq, had_audio_wq);
|
||||
|
|
Loading…
Reference in New Issue