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[v7,04/10] powerpc/8xx: Use a larger CPM1 command check mask

Message ID 20230306161754.89146-5-herve.codina@bootlin.com
State Accepted
Commit b38736ac01e34491f339e12f9883dc4a8cc3d358
Headers show
Series Add the PowerQUICC audio support using the QMC | expand

Commit Message

Herve Codina March 6, 2023, 4:17 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>
Acked-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Acked-by: Michael Ellerman <mpe@ellerman.id.au>
---
 arch/powerpc/platforms/8xx/cpm1.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

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);