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Message-Id: <1375455042-24093-5-git-send-email-g.liakhovetski@gmx.de>
Date: Fri, 2 Aug 2013 16:50:39 +0200
From: Guennadi Liakhovetski <g.liakhovetski@....de>
To: linux-sh@...r.kernel.org
Cc: linux-kernel@...r.kernel.org, Magnus Damm <magnus.damm@...il.com>,
Simon Horman <horms@...ge.net.au>,
Laurent Pinchart <laurent.pinchart@...asonboard.com>,
Vinod Koul <vinod.koul@...el.com>,
Sergei Shtylyov <sergei.shtylyov@...entembedded.com>,
Guennadi Liakhovetski <g.liakhovetski+renesas@...il.com>
Subject: [PATCH v5 4/7] DMA: shdma: add r8a73a4 DMAC data to the device ID table
This configuration data will be used, when DMAC DT support is added to
r8a73a4.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski+renesas@...il.com>
---
v5:
1. don't include mach/*.h headers
2. don't change the C-case
3. don't include unrelated patches
4. include only one architecture
5. don't use slave addresses and IDs in slave lists
drivers/dma/sh/Kconfig | 4 ++
drivers/dma/sh/Makefile | 3 ++
drivers/dma/sh/shdma-r8a73a4.c | 77 ++++++++++++++++++++++++++++++++++++++++
drivers/dma/sh/shdma.h | 7 ++++
drivers/dma/sh/shdmac.c | 1 +
5 files changed, 92 insertions(+), 0 deletions(-)
create mode 100644 drivers/dma/sh/shdma-r8a73a4.c
diff --git a/drivers/dma/sh/Kconfig b/drivers/dma/sh/Kconfig
index 5c1dee2..d0924b6 100644
--- a/drivers/dma/sh/Kconfig
+++ b/drivers/dma/sh/Kconfig
@@ -22,3 +22,7 @@ config SUDMAC
depends on SH_DMAE_BASE
help
Enable support for the Renesas SUDMAC controllers.
+
+config SHDMA_R8A73A4
+ def_bool y
+ depends on ARCH_R8A73A4 && SH_DMAE != n
diff --git a/drivers/dma/sh/Makefile b/drivers/dma/sh/Makefile
index 893ee09..05a31d4 100644
--- a/drivers/dma/sh/Makefile
+++ b/drivers/dma/sh/Makefile
@@ -1,5 +1,8 @@
obj-$(CONFIG_SH_DMAE_BASE) += shdma-base.o shdma-of.o
obj-$(CONFIG_SH_DMAE) += shdma.o
shdma-y := shdmac.o
+ifeq ($(CONFIG_OF),y)
+shdma-$(CONFIG_SHDMA_R8A73A4) += shdma-r8a73a4.o
+endif
shdma-objs := $(shdma-y)
obj-$(CONFIG_SUDMAC) += sudmac.o
diff --git a/drivers/dma/sh/shdma-r8a73a4.c b/drivers/dma/sh/shdma-r8a73a4.c
new file mode 100644
index 0000000..7cad656
--- /dev/null
+++ b/drivers/dma/sh/shdma-r8a73a4.c
@@ -0,0 +1,77 @@
+/*
+ * Renesas SuperH DMA Engine support for r8a73a4 (APE6) SoCs
+ *
+ * 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.
+ */
+#include <linux/sh_dma.h>
+
+#include "shdma-arm.h"
+
+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,
+};
diff --git a/drivers/dma/sh/shdma.h b/drivers/dma/sh/shdma.h
index ff2f93b..5210900 100644
--- a/drivers/dma/sh/shdma.h
+++ b/drivers/dma/sh/shdma.h
@@ -62,4 +62,11 @@ 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_SHDMA_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 */
diff --git a/drivers/dma/sh/shdmac.c b/drivers/dma/sh/shdmac.c
index 4412cad..bf16b3d 100644
--- a/drivers/dma/sh/shdmac.c
+++ b/drivers/dma/sh/shdmac.c
@@ -677,6 +677,7 @@ static const struct shdma_ops sh_dmae_shdma_ops = {
};
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);
--
1.7.2.5
--
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