Re: [PATCH v3] drm: bridge/dw_hdmi: add audio sample channel status setting
On 13/09/2019 08:37, Jonas Karlman wrote:
> On 2019-09-11 19:02, Cheng-yi Chiang wrote:
>> On Thu, Sep 12, 2019 at 12:54 AM Jernej Škrabec
>> wrote:
>>> Dne sreda, 11. september 2019 ob 18:23:59 CEST je Neil Armstrong napisal(a):
On 11/09/2019 10:26, Cheng-Yi Chiang wrote:
> From: Yakir Yang
>
> When transmitting IEC60985 linear PCM audio, we configure the
> Aduio Sample Channel Status information in the IEC60958 frame.
> The status bit is already available in iec.status of hdmi_codec_params.
>
> This fix the issue that audio does not come out on some monitors
> (e.g. LG 22CV241)
>
> Note that these registers are only for interfaces:
> I2S audio interface, General Purpose Audio (GPA), or AHB audio DMA
> (AHBAUDDMA).
> For S/PDIF interface this information comes from the stream.
>
> Currently this function dw_hdmi_set_channel_status is only called
> from dw-hdmi-i2s-audio in I2S setup.
>
> Signed-off-by: Yakir Yang
> Signed-off-by: Cheng-Yi Chiang
> ---
>
> Change from v2 to v3:
> 1. Reuse what is already set in iec.status in hw_param.
> 2. Remove all useless definition of registers and values.
> 3. Note that the original sampling frequency is not written to
>
>the channel status as we reuse create_iec958_consumer in pcm_iec958.c.
>Without that it can still play audio fine.
>
> .../drm/bridge/synopsys/dw-hdmi-i2s-audio.c | 1 +
> drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 20 +++
> drivers/gpu/drm/bridge/synopsys/dw-hdmi.h | 2 ++
> include/drm/bridge/dw_hdmi.h | 1 +
> 4 files changed, 24 insertions(+)
>
> diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c
> b/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c index
> 34d8e837555f..20f4f92dd866 100644
> --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c
> +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c
> @@ -102,6 +102,7 @@ static int dw_hdmi_i2s_hw_params(struct device *dev,
> void *data,>
> }
>
> dw_hdmi_set_sample_rate(hdmi, hparms->sample_rate);
>
> + dw_hdmi_set_channel_status(hdmi, hparms->iec.status);
>
> dw_hdmi_set_channel_count(hdmi, hparms->channels);
> dw_hdmi_set_channel_allocation(hdmi, hparms-
cea.channel_allocation);
> diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
> b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c index
> bd65d0479683..aa7efd4da1c8 100644
> --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
> +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
> @@ -582,6 +582,26 @@ static unsigned int hdmi_compute_n(unsigned int freq,
> unsigned long pixel_clk)>
> return n;
>
> }
>
> +/*
> + * When transmitting IEC60958 linear PCM audio, these registers allow to
> + * configure the channel status information of all the channel status
> + * bits in the IEC60958 frame. For the moment this configuration is only
> + * used when the I2S audio interface, General Purpose Audio (GPA),
> + * or AHB audio DMA (AHBAUDDMA) interface is active
> + * (for S/PDIF interface this information comes from the stream).
> + */
> +void dw_hdmi_set_channel_status(struct dw_hdmi *hdmi,
> + u8 *channel_status)
> +{
> + /*
> +* Set channel status register for frequency and word length.
> +* Use default values for other registers.
> +*/
> + hdmi_writeb(hdmi, channel_status[3], HDMI_FC_AUDSCHNLS7);
> + hdmi_writeb(hdmi, channel_status[4], HDMI_FC_AUDSCHNLS8);
> +}
> +EXPORT_SYMBOL_GPL(dw_hdmi_set_channel_status);
> +
>
> static void hdmi_set_clk_regenerator(struct dw_hdmi *hdmi,
>
> unsigned long pixel_clk, unsigned int sample_rate)
>
> {
>
> diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.h
> b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.h index
> 6988f12d89d9..fcff5059db24 100644
> --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.h
> +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.h
> @@ -158,6 +158,8 @@
>
> #define HDMI_FC_SPDDEVICEINF0x1062
> #define HDMI_FC_AUDSCONF0x1063
> #define HDMI_FC_AUDSSTAT0x1064
>
> +#define HDMI_FC_AUDSCHNLS7 0x106e
> +#define HDMI_FC_AUDSCHNLS8 0x106f
>
> #define HDMI_FC_DATACH0FILL 0x1070
> #define HDMI_FC_DATACH1FILL 0x1071
> #define HDMI_FC_DATACH2FILL 0x1072
>
> diff --git a/include/drm/bridge/dw_hdmi.h b/include/drm/bridge/dw_hdmi.h
> index cf528c289857..4b3e863c4f8a 100644
> --- a/include/drm/bridge/dw_hdmi.h
> +++ b/include/drm/bridge/dw_hdmi.h
> @@ -156,
Re: [PATCH v3] drm: bridge/dw_hdmi: add audio sample channel status setting
On 2019-09-11 19:02, Cheng-yi Chiang wrote:
> On Thu, Sep 12, 2019 at 12:54 AM Jernej Škrabec
> wrote:
>> Dne sreda, 11. september 2019 ob 18:23:59 CEST je Neil Armstrong napisal(a):
>>> On 11/09/2019 10:26, Cheng-Yi Chiang wrote:
From: Yakir Yang
When transmitting IEC60985 linear PCM audio, we configure the
Aduio Sample Channel Status information in the IEC60958 frame.
The status bit is already available in iec.status of hdmi_codec_params.
This fix the issue that audio does not come out on some monitors
(e.g. LG 22CV241)
Note that these registers are only for interfaces:
I2S audio interface, General Purpose Audio (GPA), or AHB audio DMA
(AHBAUDDMA).
For S/PDIF interface this information comes from the stream.
Currently this function dw_hdmi_set_channel_status is only called
from dw-hdmi-i2s-audio in I2S setup.
Signed-off-by: Yakir Yang
Signed-off-by: Cheng-Yi Chiang
---
Change from v2 to v3:
1. Reuse what is already set in iec.status in hw_param.
2. Remove all useless definition of registers and values.
3. Note that the original sampling frequency is not written to
the channel status as we reuse create_iec958_consumer in pcm_iec958.c.
Without that it can still play audio fine.
.../drm/bridge/synopsys/dw-hdmi-i2s-audio.c | 1 +
drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 20 +++
drivers/gpu/drm/bridge/synopsys/dw-hdmi.h | 2 ++
include/drm/bridge/dw_hdmi.h | 1 +
4 files changed, 24 insertions(+)
diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c
b/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c index
34d8e837555f..20f4f92dd866 100644
--- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c
+++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c
@@ -102,6 +102,7 @@ static int dw_hdmi_i2s_hw_params(struct device *dev,
void *data,>
}
dw_hdmi_set_sample_rate(hdmi, hparms->sample_rate);
+ dw_hdmi_set_channel_status(hdmi, hparms->iec.status);
dw_hdmi_set_channel_count(hdmi, hparms->channels);
dw_hdmi_set_channel_allocation(hdmi, hparms-
>>> cea.channel_allocation);
diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c index
bd65d0479683..aa7efd4da1c8 100644
--- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
+++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
@@ -582,6 +582,26 @@ static unsigned int hdmi_compute_n(unsigned int freq,
unsigned long pixel_clk)>
return n;
}
+/*
+ * When transmitting IEC60958 linear PCM audio, these registers allow to
+ * configure the channel status information of all the channel status
+ * bits in the IEC60958 frame. For the moment this configuration is only
+ * used when the I2S audio interface, General Purpose Audio (GPA),
+ * or AHB audio DMA (AHBAUDDMA) interface is active
+ * (for S/PDIF interface this information comes from the stream).
+ */
+void dw_hdmi_set_channel_status(struct dw_hdmi *hdmi,
+ u8 *channel_status)
+{
+ /*
+* Set channel status register for frequency and word length.
+* Use default values for other registers.
+*/
+ hdmi_writeb(hdmi, channel_status[3], HDMI_FC_AUDSCHNLS7);
+ hdmi_writeb(hdmi, channel_status[4], HDMI_FC_AUDSCHNLS8);
+}
+EXPORT_SYMBOL_GPL(dw_hdmi_set_channel_status);
+
static void hdmi_set_clk_regenerator(struct dw_hdmi *hdmi,
unsigned long pixel_clk, unsigned int sample_rate)
{
diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.h
b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.h index
6988f12d89d9..fcff5059db24 100644
--- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.h
+++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.h
@@ -158,6 +158,8 @@
#define HDMI_FC_SPDDEVICEINF0x1062
#define HDMI_FC_AUDSCONF0x1063
#define HDMI_FC_AUDSSTAT0x1064
+#define HDMI_FC_AUDSCHNLS7 0x106e
+#define HDMI_FC_AUDSCHNLS8 0x106f
#define HDMI_FC_DATACH0FILL 0x1070
#define HDMI_FC_DATACH1FILL 0x1071
#define HDMI_FC_DATACH2FILL 0x1072
diff --git a/include/drm/bridge/dw_hdmi.h b/include/drm/bridge/dw_hdmi.h
index cf528c289857..4b3e863c4f8a 100644
--- a/include/drm/bridge/dw_hdmi.h
+++ b/include/drm/bridge/dw_hdmi.h
@@ -156,6 +156,7 @@ void dw_hdmi_setup_rx_sense(struct dw_hdmi *hdmi, bool
hpd, bool rx_sense);>
void dw_hdmi_set_sample_rate(struct dw_hdmi *hdmi, unsigned
Re: [PATCH v3] drm: bridge/dw_hdmi: add audio sample channel status setting
Dne sreda, 11. september 2019 ob 19:02:38 CEST je Cheng-yi Chiang napisal(a):
> On Thu, Sep 12, 2019 at 12:54 AM Jernej Škrabec
wrote:
> > Dne sreda, 11. september 2019 ob 18:23:59 CEST je Neil Armstrong
napisal(a):
> > > On 11/09/2019 10:26, Cheng-Yi Chiang wrote:
> > > > From: Yakir Yang
> > > >
> > > > When transmitting IEC60985 linear PCM audio, we configure the
> > > > Aduio Sample Channel Status information in the IEC60958 frame.
> > > > The status bit is already available in iec.status of
> > > > hdmi_codec_params.
> > > >
> > > > This fix the issue that audio does not come out on some monitors
> > > > (e.g. LG 22CV241)
> > > >
> > > > Note that these registers are only for interfaces:
> > > > I2S audio interface, General Purpose Audio (GPA), or AHB audio DMA
> > > > (AHBAUDDMA).
> > > > For S/PDIF interface this information comes from the stream.
> > > >
> > > > Currently this function dw_hdmi_set_channel_status is only called
> > > > from dw-hdmi-i2s-audio in I2S setup.
> > > >
> > > > Signed-off-by: Yakir Yang
> > > > Signed-off-by: Cheng-Yi Chiang
> > > > ---
> > > >
> > > > Change from v2 to v3:
> > > > 1. Reuse what is already set in iec.status in hw_param.
> > > > 2. Remove all useless definition of registers and values.
> > > > 3. Note that the original sampling frequency is not written to
> > > >
> > > >the channel status as we reuse create_iec958_consumer in
> > > >pcm_iec958.c.
> > > >Without that it can still play audio fine.
> > > >
> > > > .../drm/bridge/synopsys/dw-hdmi-i2s-audio.c | 1 +
> > > > drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 20
> > > > +++
> > > > drivers/gpu/drm/bridge/synopsys/dw-hdmi.h | 2 ++
> > > > include/drm/bridge/dw_hdmi.h | 1 +
> > > > 4 files changed, 24 insertions(+)
> > > >
> > > > diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c
> > > > b/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c index
> > > > 34d8e837555f..20f4f92dd866 100644
> > > > --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c
> > > > +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c
> > > > @@ -102,6 +102,7 @@ static int dw_hdmi_i2s_hw_params(struct device
> > > > *dev,
> > > > void *data,>
> > > >
> > > > }
> > > >
> > > > dw_hdmi_set_sample_rate(hdmi, hparms->sample_rate);
> > > >
> > > > + dw_hdmi_set_channel_status(hdmi, hparms->iec.status);
> > > >
> > > > dw_hdmi_set_channel_count(hdmi, hparms->channels);
> > > > dw_hdmi_set_channel_allocation(hdmi, hparms-
> > >
> > >cea.channel_allocation);
> > >
> > > > diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
> > > > b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c index
> > > > bd65d0479683..aa7efd4da1c8 100644
> > > > --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
> > > > +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
> > > > @@ -582,6 +582,26 @@ static unsigned int hdmi_compute_n(unsigned int
> > > > freq,
> > > > unsigned long pixel_clk)>
> > > >
> > > > return n;
> > > >
> > > > }
> > > >
> > > > +/*
> > > > + * When transmitting IEC60958 linear PCM audio, these registers allow
> > > > to
> > > > + * configure the channel status information of all the channel status
> > > > + * bits in the IEC60958 frame. For the moment this configuration is
> > > > only
> > > > + * used when the I2S audio interface, General Purpose Audio (GPA),
> > > > + * or AHB audio DMA (AHBAUDDMA) interface is active
> > > > + * (for S/PDIF interface this information comes from the stream).
> > > > + */
> > > > +void dw_hdmi_set_channel_status(struct dw_hdmi *hdmi,
> > > > + u8 *channel_status)
> > > > +{
> > > > + /*
> > > > +* Set channel status register for frequency and word length.
> > > > +* Use default values for other registers.
> > > > +*/
> > > > + hdmi_writeb(hdmi, channel_status[3], HDMI_FC_AUDSCHNLS7);
> > > > + hdmi_writeb(hdmi, channel_status[4], HDMI_FC_AUDSCHNLS8);
> > > > +}
> > > > +EXPORT_SYMBOL_GPL(dw_hdmi_set_channel_status);
> > > > +
> > > >
> > > > static void hdmi_set_clk_regenerator(struct dw_hdmi *hdmi,
> > > >
> > > > unsigned long pixel_clk, unsigned int sample_rate)
> > > >
> > > > {
> > > >
> > > > diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.h
> > > > b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.h index
> > > > 6988f12d89d9..fcff5059db24 100644
> > > > --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.h
> > > > +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.h
> > > > @@ -158,6 +158,8 @@
> > > >
> > > > #define HDMI_FC_SPDDEVICEINF0x1062
> > > > #define HDMI_FC_AUDSCONF0x1063
> > > > #define HDMI_FC_AUDSSTAT0x1064
> > > >
> > > > +#define HDMI_FC_AUDSCHNLS7 0x106e
> > > > +#define HDMI_FC_AUDSCHNLS8 0x106f
> > > >
> > > > #define HDMI_FC_DATACH0FILL 0x1070
> > > > #define HDMI_FC_DATACH1FILL
Re: [PATCH v3] drm: bridge/dw_hdmi: add audio sample channel status setting
On Thu, Sep 12, 2019 at 12:54 AM Jernej Škrabec wrote:
>
> Dne sreda, 11. september 2019 ob 18:23:59 CEST je Neil Armstrong napisal(a):
> > On 11/09/2019 10:26, Cheng-Yi Chiang wrote:
> > > From: Yakir Yang
> > >
> > > When transmitting IEC60985 linear PCM audio, we configure the
> > > Aduio Sample Channel Status information in the IEC60958 frame.
> > > The status bit is already available in iec.status of hdmi_codec_params.
> > >
> > > This fix the issue that audio does not come out on some monitors
> > > (e.g. LG 22CV241)
> > >
> > > Note that these registers are only for interfaces:
> > > I2S audio interface, General Purpose Audio (GPA), or AHB audio DMA
> > > (AHBAUDDMA).
> > > For S/PDIF interface this information comes from the stream.
> > >
> > > Currently this function dw_hdmi_set_channel_status is only called
> > > from dw-hdmi-i2s-audio in I2S setup.
> > >
> > > Signed-off-by: Yakir Yang
> > > Signed-off-by: Cheng-Yi Chiang
> > > ---
> > >
> > > Change from v2 to v3:
> > > 1. Reuse what is already set in iec.status in hw_param.
> > > 2. Remove all useless definition of registers and values.
> > > 3. Note that the original sampling frequency is not written to
> > >
> > >the channel status as we reuse create_iec958_consumer in pcm_iec958.c.
> > >Without that it can still play audio fine.
> > >
> > > .../drm/bridge/synopsys/dw-hdmi-i2s-audio.c | 1 +
> > > drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 20 +++
> > > drivers/gpu/drm/bridge/synopsys/dw-hdmi.h | 2 ++
> > > include/drm/bridge/dw_hdmi.h | 1 +
> > > 4 files changed, 24 insertions(+)
> > >
> > > diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c
> > > b/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c index
> > > 34d8e837555f..20f4f92dd866 100644
> > > --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c
> > > +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c
> > > @@ -102,6 +102,7 @@ static int dw_hdmi_i2s_hw_params(struct device *dev,
> > > void *data,>
> > > }
> > >
> > > dw_hdmi_set_sample_rate(hdmi, hparms->sample_rate);
> > >
> > > + dw_hdmi_set_channel_status(hdmi, hparms->iec.status);
> > >
> > > dw_hdmi_set_channel_count(hdmi, hparms->channels);
> > > dw_hdmi_set_channel_allocation(hdmi, hparms-
> >cea.channel_allocation);
> > >
> > > diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
> > > b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c index
> > > bd65d0479683..aa7efd4da1c8 100644
> > > --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
> > > +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
> > > @@ -582,6 +582,26 @@ static unsigned int hdmi_compute_n(unsigned int freq,
> > > unsigned long pixel_clk)>
> > > return n;
> > >
> > > }
> > >
> > > +/*
> > > + * When transmitting IEC60958 linear PCM audio, these registers allow to
> > > + * configure the channel status information of all the channel status
> > > + * bits in the IEC60958 frame. For the moment this configuration is only
> > > + * used when the I2S audio interface, General Purpose Audio (GPA),
> > > + * or AHB audio DMA (AHBAUDDMA) interface is active
> > > + * (for S/PDIF interface this information comes from the stream).
> > > + */
> > > +void dw_hdmi_set_channel_status(struct dw_hdmi *hdmi,
> > > + u8 *channel_status)
> > > +{
> > > + /*
> > > +* Set channel status register for frequency and word length.
> > > +* Use default values for other registers.
> > > +*/
> > > + hdmi_writeb(hdmi, channel_status[3], HDMI_FC_AUDSCHNLS7);
> > > + hdmi_writeb(hdmi, channel_status[4], HDMI_FC_AUDSCHNLS8);
> > > +}
> > > +EXPORT_SYMBOL_GPL(dw_hdmi_set_channel_status);
> > > +
> > >
> > > static void hdmi_set_clk_regenerator(struct dw_hdmi *hdmi,
> > >
> > > unsigned long pixel_clk, unsigned int sample_rate)
> > >
> > > {
> > >
> > > diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.h
> > > b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.h index
> > > 6988f12d89d9..fcff5059db24 100644
> > > --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.h
> > > +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.h
> > > @@ -158,6 +158,8 @@
> > >
> > > #define HDMI_FC_SPDDEVICEINF0x1062
> > > #define HDMI_FC_AUDSCONF0x1063
> > > #define HDMI_FC_AUDSSTAT0x1064
> > >
> > > +#define HDMI_FC_AUDSCHNLS7 0x106e
> > > +#define HDMI_FC_AUDSCHNLS8 0x106f
> > >
> > > #define HDMI_FC_DATACH0FILL 0x1070
> > > #define HDMI_FC_DATACH1FILL 0x1071
> > > #define HDMI_FC_DATACH2FILL 0x1072
> > >
> > > diff --git a/include/drm/bridge/dw_hdmi.h b/include/drm/bridge/dw_hdmi.h
> > > index cf528c289857..4b3e863c4f8a 100644
> > > --- a/include/drm/bridge/dw_hdmi.h
> > > +++ b/include/drm/bridge/dw_hdmi.h
> > > @@ -156,6 +156,7 @@ void dw_hdmi_setup_rx_sense(struct dw_hdmi *hdmi, bool
> > > hpd, bool rx_sense)
Re: [PATCH v3] drm: bridge/dw_hdmi: add audio sample channel status setting
Dne sreda, 11. september 2019 ob 18:23:59 CEST je Neil Armstrong napisal(a):
> On 11/09/2019 10:26, Cheng-Yi Chiang wrote:
> > From: Yakir Yang
> >
> > When transmitting IEC60985 linear PCM audio, we configure the
> > Aduio Sample Channel Status information in the IEC60958 frame.
> > The status bit is already available in iec.status of hdmi_codec_params.
> >
> > This fix the issue that audio does not come out on some monitors
> > (e.g. LG 22CV241)
> >
> > Note that these registers are only for interfaces:
> > I2S audio interface, General Purpose Audio (GPA), or AHB audio DMA
> > (AHBAUDDMA).
> > For S/PDIF interface this information comes from the stream.
> >
> > Currently this function dw_hdmi_set_channel_status is only called
> > from dw-hdmi-i2s-audio in I2S setup.
> >
> > Signed-off-by: Yakir Yang
> > Signed-off-by: Cheng-Yi Chiang
> > ---
> >
> > Change from v2 to v3:
> > 1. Reuse what is already set in iec.status in hw_param.
> > 2. Remove all useless definition of registers and values.
> > 3. Note that the original sampling frequency is not written to
> >
> >the channel status as we reuse create_iec958_consumer in pcm_iec958.c.
> >Without that it can still play audio fine.
> >
> > .../drm/bridge/synopsys/dw-hdmi-i2s-audio.c | 1 +
> > drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 20 +++
> > drivers/gpu/drm/bridge/synopsys/dw-hdmi.h | 2 ++
> > include/drm/bridge/dw_hdmi.h | 1 +
> > 4 files changed, 24 insertions(+)
> >
> > diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c
> > b/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c index
> > 34d8e837555f..20f4f92dd866 100644
> > --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c
> > +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c
> > @@ -102,6 +102,7 @@ static int dw_hdmi_i2s_hw_params(struct device *dev,
> > void *data,>
> > }
> >
> > dw_hdmi_set_sample_rate(hdmi, hparms->sample_rate);
> >
> > + dw_hdmi_set_channel_status(hdmi, hparms->iec.status);
> >
> > dw_hdmi_set_channel_count(hdmi, hparms->channels);
> > dw_hdmi_set_channel_allocation(hdmi, hparms-
>cea.channel_allocation);
> >
> > diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
> > b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c index
> > bd65d0479683..aa7efd4da1c8 100644
> > --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
> > +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
> > @@ -582,6 +582,26 @@ static unsigned int hdmi_compute_n(unsigned int freq,
> > unsigned long pixel_clk)>
> > return n;
> >
> > }
> >
> > +/*
> > + * When transmitting IEC60958 linear PCM audio, these registers allow to
> > + * configure the channel status information of all the channel status
> > + * bits in the IEC60958 frame. For the moment this configuration is only
> > + * used when the I2S audio interface, General Purpose Audio (GPA),
> > + * or AHB audio DMA (AHBAUDDMA) interface is active
> > + * (for S/PDIF interface this information comes from the stream).
> > + */
> > +void dw_hdmi_set_channel_status(struct dw_hdmi *hdmi,
> > + u8 *channel_status)
> > +{
> > + /*
> > +* Set channel status register for frequency and word length.
> > +* Use default values for other registers.
> > +*/
> > + hdmi_writeb(hdmi, channel_status[3], HDMI_FC_AUDSCHNLS7);
> > + hdmi_writeb(hdmi, channel_status[4], HDMI_FC_AUDSCHNLS8);
> > +}
> > +EXPORT_SYMBOL_GPL(dw_hdmi_set_channel_status);
> > +
> >
> > static void hdmi_set_clk_regenerator(struct dw_hdmi *hdmi,
> >
> > unsigned long pixel_clk, unsigned int sample_rate)
> >
> > {
> >
> > diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.h
> > b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.h index
> > 6988f12d89d9..fcff5059db24 100644
> > --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.h
> > +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.h
> > @@ -158,6 +158,8 @@
> >
> > #define HDMI_FC_SPDDEVICEINF0x1062
> > #define HDMI_FC_AUDSCONF0x1063
> > #define HDMI_FC_AUDSSTAT0x1064
> >
> > +#define HDMI_FC_AUDSCHNLS7 0x106e
> > +#define HDMI_FC_AUDSCHNLS8 0x106f
> >
> > #define HDMI_FC_DATACH0FILL 0x1070
> > #define HDMI_FC_DATACH1FILL 0x1071
> > #define HDMI_FC_DATACH2FILL 0x1072
> >
> > diff --git a/include/drm/bridge/dw_hdmi.h b/include/drm/bridge/dw_hdmi.h
> > index cf528c289857..4b3e863c4f8a 100644
> > --- a/include/drm/bridge/dw_hdmi.h
> > +++ b/include/drm/bridge/dw_hdmi.h
> > @@ -156,6 +156,7 @@ void dw_hdmi_setup_rx_sense(struct dw_hdmi *hdmi, bool
> > hpd, bool rx_sense);>
> > void dw_hdmi_set_sample_rate(struct dw_hdmi *hdmi, unsigned int rate);
> > void dw_hdmi_set_channel_count(struct dw_hdmi *hdmi, unsigned int cnt);
> >
> > +void dw_hdmi_set_channel_status(struct dw_hdmi *hdmi, u8
> > *channel_status);
> >
> > v
Re: [PATCH v3] drm: bridge/dw_hdmi: add audio sample channel status setting
On 11/09/2019 10:26, Cheng-Yi Chiang wrote:
> From: Yakir Yang
>
> When transmitting IEC60985 linear PCM audio, we configure the
> Aduio Sample Channel Status information in the IEC60958 frame.
> The status bit is already available in iec.status of hdmi_codec_params.
>
> This fix the issue that audio does not come out on some monitors
> (e.g. LG 22CV241)
>
> Note that these registers are only for interfaces:
> I2S audio interface, General Purpose Audio (GPA), or AHB audio DMA
> (AHBAUDDMA).
> For S/PDIF interface this information comes from the stream.
>
> Currently this function dw_hdmi_set_channel_status is only called
> from dw-hdmi-i2s-audio in I2S setup.
>
> Signed-off-by: Yakir Yang
> Signed-off-by: Cheng-Yi Chiang
> ---
>
> Change from v2 to v3:
> 1. Reuse what is already set in iec.status in hw_param.
> 2. Remove all useless definition of registers and values.
> 3. Note that the original sampling frequency is not written to
>the channel status as we reuse create_iec958_consumer in pcm_iec958.c.
>Without that it can still play audio fine.
>
> .../drm/bridge/synopsys/dw-hdmi-i2s-audio.c | 1 +
> drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 20 +++
> drivers/gpu/drm/bridge/synopsys/dw-hdmi.h | 2 ++
> include/drm/bridge/dw_hdmi.h | 1 +
> 4 files changed, 24 insertions(+)
>
> diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c
> b/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c
> index 34d8e837555f..20f4f92dd866 100644
> --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c
> +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c
> @@ -102,6 +102,7 @@ static int dw_hdmi_i2s_hw_params(struct device *dev, void
> *data,
> }
>
> dw_hdmi_set_sample_rate(hdmi, hparms->sample_rate);
> + dw_hdmi_set_channel_status(hdmi, hparms->iec.status);
> dw_hdmi_set_channel_count(hdmi, hparms->channels);
> dw_hdmi_set_channel_allocation(hdmi, hparms->cea.channel_allocation);
>
> diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
> b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
> index bd65d0479683..aa7efd4da1c8 100644
> --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
> +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
> @@ -582,6 +582,26 @@ static unsigned int hdmi_compute_n(unsigned int freq,
> unsigned long pixel_clk)
> return n;
> }
>
> +/*
> + * When transmitting IEC60958 linear PCM audio, these registers allow to
> + * configure the channel status information of all the channel status
> + * bits in the IEC60958 frame. For the moment this configuration is only
> + * used when the I2S audio interface, General Purpose Audio (GPA),
> + * or AHB audio DMA (AHBAUDDMA) interface is active
> + * (for S/PDIF interface this information comes from the stream).
> + */
> +void dw_hdmi_set_channel_status(struct dw_hdmi *hdmi,
> + u8 *channel_status)
> +{
> + /*
> + * Set channel status register for frequency and word length.
> + * Use default values for other registers.
> + */
> + hdmi_writeb(hdmi, channel_status[3], HDMI_FC_AUDSCHNLS7);
> + hdmi_writeb(hdmi, channel_status[4], HDMI_FC_AUDSCHNLS8);
> +}
> +EXPORT_SYMBOL_GPL(dw_hdmi_set_channel_status);
> +
> static void hdmi_set_clk_regenerator(struct dw_hdmi *hdmi,
> unsigned long pixel_clk, unsigned int sample_rate)
> {
> diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.h
> b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.h
> index 6988f12d89d9..fcff5059db24 100644
> --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.h
> +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.h
> @@ -158,6 +158,8 @@
> #define HDMI_FC_SPDDEVICEINF0x1062
> #define HDMI_FC_AUDSCONF0x1063
> #define HDMI_FC_AUDSSTAT0x1064
> +#define HDMI_FC_AUDSCHNLS7 0x106e
> +#define HDMI_FC_AUDSCHNLS8 0x106f
> #define HDMI_FC_DATACH0FILL 0x1070
> #define HDMI_FC_DATACH1FILL 0x1071
> #define HDMI_FC_DATACH2FILL 0x1072
> diff --git a/include/drm/bridge/dw_hdmi.h b/include/drm/bridge/dw_hdmi.h
> index cf528c289857..4b3e863c4f8a 100644
> --- a/include/drm/bridge/dw_hdmi.h
> +++ b/include/drm/bridge/dw_hdmi.h
> @@ -156,6 +156,7 @@ void dw_hdmi_setup_rx_sense(struct dw_hdmi *hdmi, bool
> hpd, bool rx_sense);
>
> void dw_hdmi_set_sample_rate(struct dw_hdmi *hdmi, unsigned int rate);
> void dw_hdmi_set_channel_count(struct dw_hdmi *hdmi, unsigned int cnt);
> +void dw_hdmi_set_channel_status(struct dw_hdmi *hdmi, u8 *channel_status);
> void dw_hdmi_set_channel_allocation(struct dw_hdmi *hdmi, unsigned int ca);
> void dw_hdmi_audio_enable(struct dw_hdmi *hdmi);
> void dw_hdmi_audio_disable(struct dw_hdmi *hdmi);
>
Looks fine for me:
Reviewed-by: Neil Armstrong
Jonas ? Jernej ? Russell ?
If it's ok for you I'll apply it.
Neil
