mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-05 06:46:59 +07:00
8eb742a091
All shdma DMACs on ARM SoCs share certain register layout patterns, which are currently defined in arch/arm/mach-shmobile/include/mach/dma-register.h. That header is included by SoC-specific setup-*.c files to be used in DMAC platform data. That header, however, cannot be directly used by the driver. This patch copies those defines into a driver-local header to be used by Device Tree configurations. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski+renesas@gmail.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
52 lines
1.2 KiB
C
52 lines
1.2 KiB
C
/*
|
|
* Renesas SuperH DMA Engine support
|
|
*
|
|
* Copyright (C) 2013 Renesas Electronics, Inc.
|
|
*
|
|
* This is free software; you can redistribute it and/or modify it under the
|
|
* terms of version 2 the GNU General Public License as published by the Free
|
|
* Software Foundation.
|
|
*/
|
|
|
|
#ifndef SHDMA_ARM_H
|
|
#define SHDMA_ARM_H
|
|
|
|
#include "shdma.h"
|
|
|
|
/* Transmit sizes and respective CHCR register values */
|
|
enum {
|
|
XMIT_SZ_8BIT = 0,
|
|
XMIT_SZ_16BIT = 1,
|
|
XMIT_SZ_32BIT = 2,
|
|
XMIT_SZ_64BIT = 7,
|
|
XMIT_SZ_128BIT = 3,
|
|
XMIT_SZ_256BIT = 4,
|
|
XMIT_SZ_512BIT = 5,
|
|
};
|
|
|
|
/* log2(size / 8) - used to calculate number of transfers */
|
|
#define SH_DMAE_TS_SHIFT { \
|
|
[XMIT_SZ_8BIT] = 0, \
|
|
[XMIT_SZ_16BIT] = 1, \
|
|
[XMIT_SZ_32BIT] = 2, \
|
|
[XMIT_SZ_64BIT] = 3, \
|
|
[XMIT_SZ_128BIT] = 4, \
|
|
[XMIT_SZ_256BIT] = 5, \
|
|
[XMIT_SZ_512BIT] = 6, \
|
|
}
|
|
|
|
#define TS_LOW_BIT 0x3 /* --xx */
|
|
#define TS_HI_BIT 0xc /* xx-- */
|
|
|
|
#define TS_LOW_SHIFT (3)
|
|
#define TS_HI_SHIFT (20 - 2) /* 2 bits for shifted low TS */
|
|
|
|
#define TS_INDEX2VAL(i) \
|
|
((((i) & TS_LOW_BIT) << TS_LOW_SHIFT) |\
|
|
(((i) & TS_HI_BIT) << TS_HI_SHIFT))
|
|
|
|
#define CHCR_TX(xmit_sz) (DM_FIX | SM_INC | 0x800 | TS_INDEX2VAL((xmit_sz)))
|
|
#define CHCR_RX(xmit_sz) (DM_INC | SM_FIX | 0x800 | TS_INDEX2VAL((xmit_sz)))
|
|
|
|
#endif
|