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soundwire: SDCA: Add additional SDCA address macros

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Compliment the existing macro to construct an SDCA control address
with macros to extract the constituent parts, and validation of such
an address. Also update the masks for the original macro to use
GENMASK to make mental comparisons with the included comment on the
address format easier.

Acked-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://patch.msgid.link/20250107154408.814455-2-ckeepax@opensource.cirrus.com
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.dev>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Charles Keepax 2025-01-07 15:44:03 +00:00 committed by Mark Brown
parent 9d89551994
commit 7b16e60b31
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 22 additions and 8 deletions
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30
include/linux/soundwire/sdw_registers.h
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@ -4,6 +4,9 @@
#ifndef __SDW_REGISTERS_H
#define __SDW_REGISTERS_H
#include <linux/bitfield.h>
#include <linux/bits.h>
/*
* SDW registers as defined by MIPI 1.2 Spec
*/
@ -329,16 +332,27 @@
* 2:0 Control Number[2:0]
*/
#define SDW_SDCA_CTL(fun, ent, ctl, ch) (BIT(30) | \
(((fun) & 0x7) << 22) | \
(((ent) & 0x40) << 15) | \
(((ent) & 0x3f) << 7) | \
(((ctl) & 0x30) << 15) | \
(((ctl) & 0x0f) << 3) | \
(((ch) & 0x38) << 12) | \
((ch) & 0x07))
#define SDW_SDCA_CTL(fun, ent, ctl, ch) (BIT(30) | \
(((fun) & GENMASK(2, 0)) << 22) | \
(((ent) & BIT(6)) << 15) | \
(((ent) & GENMASK(5, 0)) << 7) | \
(((ctl) & GENMASK(5, 4)) << 15) | \
(((ctl) & GENMASK(3, 0)) << 3) | \
(((ch) & GENMASK(5, 3)) << 12) | \
((ch) & GENMASK(2, 0)))
#define SDW_SDCA_CTL_FUNC(reg) FIELD_GET(GENMASK(24, 22), (reg))
#define SDW_SDCA_CTL_ENT(reg) ((FIELD_GET(BIT(21), (reg)) << 6) | \
FIELD_GET(GENMASK(12, 7), (reg)))
#define SDW_SDCA_CTL_CSEL(reg) ((FIELD_GET(GENMASK(20, 19), (reg)) << 4) | \
FIELD_GET(GENMASK(6, 3), (reg)))
#define SDW_SDCA_CTL_CNUM(reg) ((FIELD_GET(GENMASK(17, 15), (reg)) << 3) | \
FIELD_GET(GENMASK(2, 0), (reg)))
#define SDW_SDCA_MBQ_CTL(reg) ((reg) | BIT(13))
#define SDW_SDCA_NEXT_CTL(reg) ((reg) | BIT(14))
/* Check the reserved and fixed bits in address */
#define SDW_SDCA_VALID_CTL(reg) (((reg) & (GENMASK(31, 25) | BIT(18) | BIT(13))) == BIT(30))
#endif /* __SDW_REGISTERS_H */