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From: Herve Codina <herve.codina@bootlin.com>
To: Herve Codina <herve.codina@bootlin.com>,
Li Yang <leoyang.li@nxp.com>, Rob Herring <robh+dt@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Liam Girdwood <lgirdwood@gmail.com>,
Mark Brown <broonie@kernel.org>,
Christophe Leroy <christophe.leroy@csgroup.eu>,
Michael Ellerman <mpe@ellerman.id.au>,
Nicholas Piggin <npiggin@gmail.com>,
Qiang Zhao <qiang.zhao@nxp.com>,
Jaroslav Kysela <perex@perex.cz>,
Takashi Iwai <tiwai@suse.com>,
Shengjiu Wang <shengjiu.wang@gmail.com>,
Xiubo Li <Xiubo.Lee@gmail.com>,
Fabio Estevam <festevam@gmail.com>,
Nicolin Chen <nicoleotsuka@gmail.com>
Cc: linuxppc-dev@lists.ozlabs.org,
linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org, alsa-devel@alsa-project.org,
Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Subject: [PATCH v2 04/10] powerpc/8xx: Use a larger CPM1 command check mask
Date: Fri, 6 Jan 2023 17:37:40 +0100
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|
| Series |
Add the PowerQUICC audio support using the QMC
|
|
Commit Message
Herve Codina
Jan. 6, 2023, 4:37 p.m. UTC
The CPM1 command mask is defined for use with the standard
CPM1 command register as described in the user's manual:
0 |1 3|4 7|8 11|12 14| 15|
RST| - |OPCODE|CH_NUM| - |FLG|
In the QMC extension the CPM1 command register is redefined
(QMC supplement user's manuel) with the following mapping:
0 |1 3|4 7|8 13|14| 15|
RST|QMC OPCODE| 1110|CHANNEL_NUMBER| -|FLG|
Extend the check command mask in order to support both the
standard CH_NUM field and the QMC extension CHANNEL_NUMBER
field.
Signed-off-by: Herve Codina <herve.codina@bootlin.com>
---
arch/powerpc/platforms/8xx/cpm1.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
Comments
Le 06/01/2023 à 17:37, Herve Codina a écrit : > The CPM1 command mask is defined for use with the standard > CPM1 command register as described in the user's manual: > 0 |1 3|4 7|8 11|12 14| 15| > RST| - |OPCODE|CH_NUM| - |FLG| > > In the QMC extension the CPM1 command register is redefined > (QMC supplement user's manuel) with the following mapping: > 0 |1 3|4 7|8 13|14| 15| > RST|QMC OPCODE| 1110|CHANNEL_NUMBER| -|FLG| > > Extend the check command mask in order to support both the > standard CH_NUM field and the QMC extension CHANNEL_NUMBER > field. > > Signed-off-by: Herve Codina <herve.codina@bootlin.com> Acked-by: Christophe Leroy <christophe.leroy@csgroup.eu> (As maintainer of LINUX FOR POWERPC EMBEDDED PPC8XX) > --- > arch/powerpc/platforms/8xx/cpm1.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/arch/powerpc/platforms/8xx/cpm1.c b/arch/powerpc/platforms/8xx/cpm1.c > index 8ef1f4392086..6b828b9f90d9 100644 > --- a/arch/powerpc/platforms/8xx/cpm1.c > +++ b/arch/powerpc/platforms/8xx/cpm1.c > @@ -100,7 +100,7 @@ int cpm_command(u32 command, u8 opcode) > int i, ret; > unsigned long flags; > > - if (command & 0xffffff0f) > + if (command & 0xffffff03) > return -EINVAL; > > spin_lock_irqsave(&cmd_lock, flags);
diff --git a/arch/powerpc/platforms/8xx/cpm1.c b/arch/powerpc/platforms/8xx/cpm1.c index 8ef1f4392086..6b828b9f90d9 100644 --- a/arch/powerpc/platforms/8xx/cpm1.c +++ b/arch/powerpc/platforms/8xx/cpm1.c @@ -100,7 +100,7 @@ int cpm_command(u32 command, u8 opcode) int i, ret; unsigned long flags; - if (command & 0xffffff0f) + if (command & 0xffffff03) return -EINVAL; spin_lock_irqsave(&cmd_lock, flags);