@@ -12,7 +12,7 @@ config RENESAS_DMA
config SH_DMAE_BASE
bool "Renesas SuperH DMA Engine support"
- depends on SUPERH || ARCH_RENESAS || COMPILE_TEST
+ depends on SUPERH || COMPILE_TEST
depends on !SUPERH || SH_DMA
depends on !SH_DMA_API
default y
@@ -30,15 +30,6 @@ config SH_DMAE
help
Enable support for the Renesas SuperH DMA controllers.
-if SH_DMAE
-
-config SH_DMAE_R8A73A4
- def_bool y
- depends on ARCH_R8A73A4
- depends on OF
-
-endif
-
config RCAR_DMAC
tristate "Renesas R-Car Gen2 DMA Controller"
depends on ARCH_RENESAS || COMPILE_TEST
@@ -10,7 +10,6 @@ obj-$(CONFIG_SH_DMAE_BASE) += shdma-base.o shdma-of.o
#
shdma-y := shdmac.o
-shdma-$(CONFIG_SH_DMAE_R8A73A4) += shdma-r8a73a4.o
shdma-objs := $(shdma-y)
obj-$(CONFIG_SH_DMAE) += shdma.o
deleted file mode 100644
@@ -1,74 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Renesas SuperH DMA Engine support for r8a73a4 (APE6) SoCs
- *
- * Copyright (C) 2013 Renesas Electronics, Inc.
- */
-#include <linux/sh_dma.h>
-
-#include "shdma-arm.h"
-
-static const unsigned int dma_ts_shift[] = SH_DMAE_TS_SHIFT;
-
-static const struct sh_dmae_slave_config dma_slaves[] = {
- {
- .chcr = CHCR_TX(XMIT_SZ_32BIT),
- .mid_rid = 0xd1, /* MMC0 Tx */
- }, {
- .chcr = CHCR_RX(XMIT_SZ_32BIT),
- .mid_rid = 0xd2, /* MMC0 Rx */
- }, {
- .chcr = CHCR_TX(XMIT_SZ_32BIT),
- .mid_rid = 0xe1, /* MMC1 Tx */
- }, {
- .chcr = CHCR_RX(XMIT_SZ_32BIT),
- .mid_rid = 0xe2, /* MMC1 Rx */
- },
-};
-
-#define DMAE_CHANNEL(a, b) \
- { \
- .offset = (a) - 0x20, \
- .dmars = (a) - 0x20 + 0x40, \
- .chclr_bit = (b), \
- .chclr_offset = 0x80 - 0x20, \
- }
-
-static const struct sh_dmae_channel dma_channels[] = {
- DMAE_CHANNEL(0x8000, 0),
- DMAE_CHANNEL(0x8080, 1),
- DMAE_CHANNEL(0x8100, 2),
- DMAE_CHANNEL(0x8180, 3),
- DMAE_CHANNEL(0x8200, 4),
- DMAE_CHANNEL(0x8280, 5),
- DMAE_CHANNEL(0x8300, 6),
- DMAE_CHANNEL(0x8380, 7),
- DMAE_CHANNEL(0x8400, 8),
- DMAE_CHANNEL(0x8480, 9),
- DMAE_CHANNEL(0x8500, 10),
- DMAE_CHANNEL(0x8580, 11),
- DMAE_CHANNEL(0x8600, 12),
- DMAE_CHANNEL(0x8680, 13),
- DMAE_CHANNEL(0x8700, 14),
- DMAE_CHANNEL(0x8780, 15),
- DMAE_CHANNEL(0x8800, 16),
- DMAE_CHANNEL(0x8880, 17),
- DMAE_CHANNEL(0x8900, 18),
- DMAE_CHANNEL(0x8980, 19),
-};
-
-const struct sh_dmae_pdata r8a73a4_dma_pdata = {
- .slave = dma_slaves,
- .slave_num = ARRAY_SIZE(dma_slaves),
- .channel = dma_channels,
- .channel_num = ARRAY_SIZE(dma_channels),
- .ts_low_shift = TS_LOW_SHIFT,
- .ts_low_mask = TS_LOW_BIT << TS_LOW_SHIFT,
- .ts_high_shift = TS_HI_SHIFT,
- .ts_high_mask = TS_HI_BIT << TS_HI_SHIFT,
- .ts_shift = dma_ts_shift,
- .ts_shift_num = ARRAY_SIZE(dma_ts_shift),
- .dmaor_init = DMAOR_DME,
- .chclr_present = 1,
- .chclr_bitwise = 1,
-};
@@ -58,11 +58,4 @@ struct sh_dmae_desc {
#define to_sh_dev(chan) container_of(chan->shdma_chan.dma_chan.device,\
struct sh_dmae_device, shdma_dev.dma_dev)
-#ifdef CONFIG_SH_DMAE_R8A73A4
-extern const struct sh_dmae_pdata r8a73a4_dma_pdata;
-#define r8a73a4_shdma_devid (&r8a73a4_dma_pdata)
-#else
-#define r8a73a4_shdma_devid NULL
-#endif
-
#endif /* __DMA_SHDMA_H */
@@ -662,12 +662,6 @@ static const struct shdma_ops sh_dmae_shdma_ops = {
.get_residue = sh_dmae_get_residue,
};
-static const struct of_device_id sh_dmae_of_match[] = {
- {.compatible = "renesas,shdma-r8a73a4", .data = r8a73a4_shdma_devid,},
- {}
-};
-MODULE_DEVICE_TABLE(of, sh_dmae_of_match);
-
static int sh_dmae_probe(struct platform_device *pdev)
{
const enum dma_slave_buswidth widths =
@@ -912,7 +906,6 @@ static struct platform_driver sh_dmae_driver = {
.driver = {
.pm = &sh_dmae_pm,
.name = SH_DMAE_DRV_NAME,
- .of_match_table = sh_dmae_of_match,
},
.remove = sh_dmae_remove,
};
Renesas R-Mobile APE6 support is currently unused: - DMA slaves were never enabled in r8a73a4.dtsi, - The driver relies on legacy filter matching and describing all slaves and MID/RIDs in a table, unlike modern DMA engine drivers for similar hardware like rcar-dmac, - The driver doesn't seem to work well. Remove the driver, it can be resurrected from git history when needed. As this was the last user of SH_DMAE_BASE on Renesas ARM SoCs, the sh-dma-engine driver core is now used on SuperH only. Note that the DT bindings are still present, as r8a73a4.dtsi uses them. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Ulrich Hecht <uli+renesas@fpond.eu> Reviewed-by: Simon Horman <horms+renesas@verge.net.au> --- v2: - Add Reviewed-by, - Drop RFC. --- drivers/dma/sh/Kconfig | 11 +---- drivers/dma/sh/Makefile | 1 - drivers/dma/sh/shdma-r8a73a4.c | 74 ---------------------------------- drivers/dma/sh/shdma.h | 7 ---- drivers/dma/sh/shdmac.c | 7 ---- 5 files changed, 1 insertion(+), 99 deletions(-) delete mode 100644 drivers/dma/sh/shdma-r8a73a4.c