From: "Jernej Škrabec" <jernej.skrabec@siol.net>
To: Neil Armstrong <narmstrong@baylibre.com>
Cc: Cheng-Yi Chiang <cychiang@chromium.org>,
linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org,
Jonas Karlman <jonas@kwiboo.se>,
alsa-devel@alsa-project.org, tzungbi@chromium.org,
zhengxing@rock-chips.com, kuninori.morimoto.gx@renesas.com,
a.hajda@samsung.com, airlied@linux.ie, kuankuan.y@gmail.com,
jeffy.chen@rock-chips.com, dianders@chromium.org,
cain.cai@rock-chips.com, linux-rockchip@lists.infradead.org,
eddie.cai@rock-chips.com, Laurent.pinchart@ideasonboard.com,
daniel@ffwll.ch, Yakir Yang <ykk@rock-chips.com>,
enric.balletbo@collabora.com, dgreid@chromium.org,
sam@ravnborg.org, linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH] drm: bridge/dw_hdmi: add audio sample channel status setting
Date: Tue, 03 Sep 2019 20:08:28 +0200 [thread overview]
Message-ID: <19353031.SdOy5F5fmg@jernej-laptop> (raw)
In-Reply-To: <d8a80ba5-dd2b-f84d-bbfc-9dd5ccbc26e9@baylibre.com>
Hi!
Dne torek, 03. september 2019 ob 20:00:33 CEST je Neil Armstrong napisal(a):
> Hi,
>
> Le 03/09/2019 à 11:53, Neil Armstrong a écrit :
> > Hi,
> >
> > On 03/09/2019 07:51, Cheng-Yi Chiang wrote:
> >> From: Yakir Yang <ykk@rock-chips.com>
> >>
> >> When transmitting IEC60985 linear PCM audio, we configure the
> >> Audio Sample Channel Status information of all the channel
> >> status bits in the IEC60958 frame.
> >> Refer to 60958-3 page 10 for frequency, original frequency, and
> >> wordlength setting.
> >>
> >> This fix the issue that audio does not come out on some monitors
> >> (e.g. LG 22CV241)
> >>
> >> Signed-off-by: Yakir Yang <ykk@rock-chips.com>
> >> Signed-off-by: Cheng-Yi Chiang <cychiang@chromium.org>
> >> ---
> >>
> >> drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 59 +++++++++++++++++++++++
> >> drivers/gpu/drm/bridge/synopsys/dw-hdmi.h | 20 ++++++++
> >> 2 files changed, 79 insertions(+)
> >>
> >> diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
> >> b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c index
> >> bd65d0479683..34d46e25d610 100644
> >> --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
> >> +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
> >> @@ -582,6 +582,63 @@ static unsigned int hdmi_compute_n(unsigned int
> >> freq, unsigned long pixel_clk)>>
> >> return n;
> >>
> >> }
> >>
> >> +static void hdmi_set_schnl(struct dw_hdmi *hdmi)
> >> +{
> >> + u8 aud_schnl_samplerate;
> >> + u8 aud_schnl_8;
> >> +
> >> + /* These registers are on RK3288 using version 2.0a. */
> >> + if (hdmi->version != 0x200a)
> >> + return;
> >
> > Are these limited to the 2.0a version *in* RK3288, or 2.0a version on all
> > SoCs ?
>
> After investigations, Amlogic sets these registers on their 2.0a version
> aswell, and Jernej (added in Cc) reported me Allwinner sets them on their
> < 2.0a and > 2.0a IPs versions.
>
> Can you check on the Rockchip IP versions in RK3399 ?
>
> For reference, the HDMI 1.4a IP version allwinner setups is:
> https://github.com/Allwinner-Homlet/H3-BSP4.4-linux/blob/master/drivers/vide
> o/fbdev/sunxi/disp2/hdmi/hdmi_bsp_sun8iw7.c#L531-L539 (registers a
> "scrambled" but a custom bit can reset to the original mapping, 0x1066 ...
> 0x106f)
For easier reading, here is similar, but annotated version: http://ix.io/1Ub6
Check function bsp_hdmi_audio().
Unless there is a special reason, you can just remove that check.
Best regards,
Jernej
>
> Neil
>
> >> +
> >> + switch (hdmi->sample_rate) {
> >> + case 32000:
> >> + aud_schnl_samplerate = HDMI_FC_AUDSCHNLS7_SMPRATE_32K;
> >> + break;
> >> + case 44100:
> >> + aud_schnl_samplerate = HDMI_FC_AUDSCHNLS7_SMPRATE_44K1;
> >> + break;
> >> + case 48000:
> >> + aud_schnl_samplerate = HDMI_FC_AUDSCHNLS7_SMPRATE_48K;
> >> + break;
> >> + case 88200:
> >> + aud_schnl_samplerate = HDMI_FC_AUDSCHNLS7_SMPRATE_88K2;
> >> + break;
> >> + case 96000:
> >> + aud_schnl_samplerate = HDMI_FC_AUDSCHNLS7_SMPRATE_96K;
> >> + break;
> >> + case 176400:
> >> + aud_schnl_samplerate =
HDMI_FC_AUDSCHNLS7_SMPRATE_176K4;
> >> + break;
> >> + case 192000:
> >> + aud_schnl_samplerate = HDMI_FC_AUDSCHNLS7_SMPRATE_192K;
> >> + break;
> >> + case 768000:
> >> + aud_schnl_samplerate = HDMI_FC_AUDSCHNLS7_SMPRATE_768K;
> >> + break;
> >> + default:
> >> + dev_warn(hdmi->dev, "Unsupported audio sample rate (%u)
\n",
> >> + hdmi->sample_rate);
> >> + return;
> >> + }
> >> +
> >> + /* set channel status register */
> >> + hdmi_modb(hdmi, aud_schnl_samplerate,
HDMI_FC_AUDSCHNLS7_SMPRATE_MASK,
> >> + HDMI_FC_AUDSCHNLS7);
> >> +
> >> + /*
> >> + * Set original frequency to be the same as frequency.
> >> + * Use one-complement value as stated in IEC60958-3 page 13.
> >> + */
> >> + aud_schnl_8 = (~aud_schnl_samplerate) <<
> >> + HDMI_FC_AUDSCHNLS8_ORIGSAMPFREQ_OFFSET;
> >> +
> >> + /* This means word length is 16 bit. Refer to IEC60958-3 page 12.
*/
> >> + aud_schnl_8 |= 2 << HDMI_FC_AUDSCHNLS8_WORDLEGNTH_OFFSET;
> >> +
> >> + hdmi_writeb(hdmi, aud_schnl_8, HDMI_FC_AUDSCHNLS8);
> >> +}
> >> +
> >>
> >> static void hdmi_set_clk_regenerator(struct dw_hdmi *hdmi,
> >>
> >> unsigned long pixel_clk, unsigned int sample_rate)
> >>
> >> {
> >>
> >> @@ -620,6 +677,8 @@ static void hdmi_set_clk_regenerator(struct dw_hdmi
> >> *hdmi,>>
> >> hdmi->audio_cts = cts;
> >> hdmi_set_cts_n(hdmi, cts, hdmi->audio_enable ? n : 0);
> >> spin_unlock_irq(&hdmi->audio_lock);
> >>
> >> +
> >> + hdmi_set_schnl(hdmi);
> >>
> >> }
> >>
> >> static void hdmi_init_clk_regenerator(struct dw_hdmi *hdmi)
> >>
> >> diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.h
> >> b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.h index
> >> 6988f12d89d9..619ebc1c8354 100644
> >> --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.h
> >> +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.h
> >> @@ -158,6 +158,17 @@
> >>
> >> #define HDMI_FC_SPDDEVICEINF 0x1062
> >> #define HDMI_FC_AUDSCONF 0x1063
> >> #define HDMI_FC_AUDSSTAT 0x1064
> >>
> >> +#define HDMI_FC_AUDSV 0x1065
> >> +#define HDMI_FC_AUDSU 0x1066
> >> +#define HDMI_FC_AUDSCHNLS0 0x1067
> >> +#define HDMI_FC_AUDSCHNLS1 0x1068
> >> +#define HDMI_FC_AUDSCHNLS2 0x1069
> >> +#define HDMI_FC_AUDSCHNLS3 0x106a
> >> +#define HDMI_FC_AUDSCHNLS4 0x106b
> >> +#define HDMI_FC_AUDSCHNLS5 0x106c
> >> +#define HDMI_FC_AUDSCHNLS6 0x106d
> >> +#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
> >>
> >> @@ -706,6 +717,15 @@ enum {
> >>
> >> /* HDMI_FC_AUDSCHNLS7 field values */
> >>
> >> HDMI_FC_AUDSCHNLS7_ACCURACY_OFFSET = 4,
> >> HDMI_FC_AUDSCHNLS7_ACCURACY_MASK = 0x30,
> >>
> >> + HDMI_FC_AUDSCHNLS7_SMPRATE_MASK = 0x0f,
> >> + HDMI_FC_AUDSCHNLS7_SMPRATE_192K = 0xe,
> >> + HDMI_FC_AUDSCHNLS7_SMPRATE_176K4 = 0xc,
> >> + HDMI_FC_AUDSCHNLS7_SMPRATE_96K = 0xa,
> >> + HDMI_FC_AUDSCHNLS7_SMPRATE_768K = 0x9,
> >> + HDMI_FC_AUDSCHNLS7_SMPRATE_88K2 = 0x8,
> >> + HDMI_FC_AUDSCHNLS7_SMPRATE_32K = 0x3,
> >> + HDMI_FC_AUDSCHNLS7_SMPRATE_48K = 0x2,
> >> + HDMI_FC_AUDSCHNLS7_SMPRATE_44K1 = 0x0,
> >>
> >> /* HDMI_FC_AUDSCHNLS8 field values */
> >>
> >> HDMI_FC_AUDSCHNLS8_ORIGSAMPFREQ_MASK = 0xf0,
next prev parent reply other threads:[~2019-09-03 18:08 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-03 5:51 [PATCH] drm: bridge/dw_hdmi: add audio sample channel status setting Cheng-Yi Chiang
2019-09-03 9:53 ` Neil Armstrong
2019-09-03 18:00 ` Neil Armstrong
2019-09-03 18:08 ` Jernej Škrabec [this message]
2019-09-03 20:33 ` Jonas Karlman
2019-09-04 9:35 ` Cheng-yi Chiang
2019-09-04 9:24 ` Cheng-yi Chiang
2019-09-04 9:13 ` Cheng-yi Chiang
2019-09-04 9:09 ` Cheng-yi Chiang
2019-09-04 9:27 ` Russell King - ARM Linux admin
2019-09-04 9:28 ` Neil Armstrong
2019-09-04 9:45 ` Cheng-yi Chiang
2019-09-04 10:31 ` Russell King - ARM Linux admin
2019-09-04 10:52 ` Cheng-yi Chiang
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=19353031.SdOy5F5fmg@jernej-laptop \
--to=jernej.skrabec@siol.net \
--cc=Laurent.pinchart@ideasonboard.com \
--cc=a.hajda@samsung.com \
--cc=airlied@linux.ie \
--cc=alsa-devel@alsa-project.org \
--cc=cain.cai@rock-chips.com \
--cc=cychiang@chromium.org \
--cc=daniel@ffwll.ch \
--cc=dgreid@chromium.org \
--cc=dianders@chromium.org \
--cc=dri-devel@lists.freedesktop.org \
--cc=eddie.cai@rock-chips.com \
--cc=enric.balletbo@collabora.com \
--cc=jeffy.chen@rock-chips.com \
--cc=jonas@kwiboo.se \
--cc=kuankuan.y@gmail.com \
--cc=kuninori.morimoto.gx@renesas.com \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-rockchip@lists.infradead.org \
--cc=narmstrong@baylibre.com \
--cc=sam@ravnborg.org \
--cc=tzungbi@chromium.org \
--cc=ykk@rock-chips.com \
--cc=zhengxing@rock-chips.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).