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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 04/10] powerpc/8xx: Use a larger CPM1 command check mask
Date:   Fri,  6 Jan 2023 14:29:45 +0100
Message-Id: <20230106132951.392271-5-herve.codina@bootlin.com>
In-Reply-To: <20230106132951.392271-1-herve.codina@bootlin.com>
References: <20230106132951.392271-1-herve.codina@bootlin.com>
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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(-)

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);
-- 
2.38.1