sh: dma-sh updates for multi IRQ and new SH-4A CPUs.

This adds DMA support for newer SH-4A CPUs, particularly SH7763/64/80/85.

This also enables multi IRQ support for platforms that have multiple
vectors bound to the same IRQ source.

Signed-off-by: Nobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com>
Signed-off-by: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

3 files changed, 108 insertions, 55 deletions

diff --git a/arch/sh/include/cpu-sh4/cpu/dma-sh4a.h b/arch/sh/include/cpu-sh4/cpu/dma-sh4a.h
new file mode 100644
index 000000000000..0ed5178fed69
--- /dev/null
+++ b/arch/sh/include/cpu-sh4/cpu/dma-sh4a.h
@@ -0,0 +1,94 @@
+#ifndef __ASM_SH_CPU_SH4_DMA_SH7780_H
+#define __ASM_SH_CPU_SH4_DMA_SH7780_H
+
+#if defined(CONFIG_CPU_SUBTYPE_SH7343) || \
+        defined(CONFIG_CPU_SUBTYPE_SH7722) || \
+        defined(CONFIG_CPU_SUBTYPE_SH7730)
+#define DMTE0_IRQ       48
+#define DMTE4_IRQ       76
+#define DMAE0_IRQ       78      /* DMA Error IRQ*/
+#define SH_DMAC_BASE0   0xFE008020
+#define SH_DMARS_BASE   0xFE009000
+#elif defined(CONFIG_CPU_SUBTYPE_SH7763) || \
+        defined(CONFIG_CPU_SUBTYPE_SH7764)
+#define DMTE0_IRQ       34
+#define DMTE4_IRQ       44
+#define DMAE0_IRQ       38
+#define SH_DMAC_BASE0   0xFF608020
+#define SH_DMARS_BASE   0xFF609000
+#elif defined(CONFIG_CPU_SUBTYPE_SH7723)
+#define DMTE0_IRQ       48      /* DMAC0A*/
+#define DMTE4_IRQ       40      /* DMAC0B */
+#define DMTE6_IRQ       42
+#define DMTE8_IRQ       76      /* DMAC1A */
+#define DMTE9_IRQ       77
+#define DMTE10_IRQ      72      /* DMAC1B */
+#define DMTE11_IRQ      73
+#define DMAE0_IRQ       78      /* DMA Error IRQ*/
+#define DMAE1_IRQ       74      /* DMA Error IRQ*/
+#define SH_DMAC_BASE0   0xFE008020
+#define SH_DMAC_BASE1   0xFDC08020
+#define SH_DMARS_BASE   0xFDC09000
+#elif defined(CONFIG_CPU_SUBTYPE_SH7780)
+#define DMTE0_IRQ       34
+#define DMTE4_IRQ       44
+#define DMTE6_IRQ       46
+#define DMTE8_IRQ       92
+#define DMTE9_IRQ       93
+#define DMTE10_IRQ      94
+#define DMTE11_IRQ      95
+#define DMAE0_IRQ       38      /* DMA Error IRQ */
+#define SH_DMAC_BASE0   0xFC808020
+#define SH_DMAC_BASE1   0xFC818020
+#define SH_DMARS_BASE   0xFC809000
+#else /* SH7785 */
+#define DMTE0_IRQ       33
+#define DMTE4_IRQ       37
+#define DMTE6_IRQ       52
+#define DMTE8_IRQ       54
+#define DMTE9_IRQ       55
+#define DMTE10_IRQ      56
+#define DMTE11_IRQ      57
+#define DMAE0_IRQ       39      /* DMA Error IRQ0 */
+#define DMAE1_IRQ       58      /* DMA Error IRQ1 */
+#define SH_DMAC_BASE0   0xFC808020
+#define SH_DMAC_BASE1   0xFCC08020
+#define SH_DMARS_BASE   0xFC809000
+#endif
+
+#define REQ_HE  0x000000C0
+#define REQ_H   0x00000080
+#define REQ_LE  0x00000040
+#define TM_BURST 0x0000020
+#define TS_8    0x00000000
+#define TS_16   0x00000008
+#define TS_32   0x00000010
+#define TS_16BLK        0x00000018
+#define TS_32BLK        0x00100000
+
+/*
+ * The SuperH DMAC supports a number of transmit sizes, we list them here,
+ * with their respective values as they appear in the CHCR registers.
+ *
+ * Defaults to a 64-bit transfer size.
+ */
+enum {
+        XMIT_SZ_8BIT,
+        XMIT_SZ_16BIT,
+        XMIT_SZ_32BIT,
+        XMIT_SZ_128BIT,
+        XMIT_SZ_256BIT,
+};
+
+/*
+ * The DMA count is defined as the number of bytes to transfer.
+ */
+static unsigned int ts_shift[] __maybe_unused = {
+        [XMIT_SZ_8BIT]          = 0,
+        [XMIT_SZ_16BIT]         = 1,
+        [XMIT_SZ_32BIT]         = 2,
+        [XMIT_SZ_128BIT]        = 4,
+        [XMIT_SZ_256BIT]        = 5,
+};
+
+#endif /* __ASM_SH_CPU_SH4_DMA_SH7780_H */
diff --git a/arch/sh/include/cpu-sh4/cpu/dma-sh7780.h b/arch/sh/include/cpu-sh4/cpu/dma-sh7780.h
deleted file mode 100644
index 71b426a6e482..000000000000
--- a/arch/sh/include/cpu-sh4/cpu/dma-sh7780.h
+++ /dev/null
@@ -1,39 +0,0 @@
-#ifndef __ASM_SH_CPU_SH4_DMA_SH7780_H
-#define __ASM_SH_CPU_SH4_DMA_SH7780_H
-
-#define REQ_HE  0x000000C0
-#define REQ_H   0x00000080
-#define REQ_LE  0x00000040
-#define TM_BURST 0x0000020
-#define TS_8    0x00000000
-#define TS_16   0x00000008
-#define TS_32   0x00000010
-#define TS_16BLK        0x00000018
-#define TS_32BLK        0x00100000
-
-/*
- * The SuperH DMAC supports a number of transmit sizes, we list them here,
- * with their respective values as they appear in the CHCR registers.
- *
- * Defaults to a 64-bit transfer size.
- */
-enum {
-        XMIT_SZ_8BIT,
-        XMIT_SZ_16BIT,
-        XMIT_SZ_32BIT,
-        XMIT_SZ_128BIT,
-        XMIT_SZ_256BIT,
-};
-
-/*
- * The DMA count is defined as the number of bytes to transfer.
- */
-static unsigned int ts_shift[] __maybe_unused = {
-        [XMIT_SZ_8BIT]          = 0,
-        [XMIT_SZ_16BIT]         = 1,
-        [XMIT_SZ_32BIT]         = 2,
-        [XMIT_SZ_128BIT]        = 4,
-        [XMIT_SZ_256BIT]        = 5,
-};
-
-#endif /* __ASM_SH_CPU_SH4_DMA_SH7780_H */
diff --git a/arch/sh/include/cpu-sh4/cpu/dma.h b/arch/sh/include/cpu-sh4/cpu/dma.h
index 235b7cd1fc9a..bcb30246e85c 100644
--- a/arch/sh/include/cpu-sh4/cpu/dma.h
+++ b/arch/sh/include/cpu-sh4/cpu/dma.h
@@ -1,31 +1,29 @@
 #ifndef __ASM_CPU_SH4_DMA_H
 #define __ASM_CPU_SH4_DMA_H
 
-#define DMAOR_INIT      ( 0x8000 | DMAOR_DME )
-
 /* SH7751/7760/7780 DMA IRQ sources */
-#define DMTE0_IRQ       34
-#define DMTE1_IRQ       35
-#define DMTE2_IRQ       36
-#define DMTE3_IRQ       37
-#define DMTE4_IRQ       44
-#define DMTE5_IRQ       45
-#define DMTE6_IRQ       46
-#define DMTE7_IRQ       47
-#define DMAE_IRQ        38
 
 #ifdef CONFIG_CPU_SH4A
-#define SH_DMAC_BASE    0xfc808020
 
+#define DMAOR_INIT      (DMAOR_DME)
 #define CHCR_TS_MASK    0x18
 #define CHCR_TS_SHIFT   3
 
-#include <cpu/dma-sh7780.h>
-#else
-#define SH_DMAC_BASE    0xffa00000
+#include <cpu/dma-sh4a.h>
+#else /* CONFIG_CPU_SH4A */
+/*
+ * SH7750/SH7751/SH7760
+ */
+#define DMTE0_IRQ       34
+#define DMTE4_IRQ       44
+#define DMTE6_IRQ       46
+#define DMAE0_IRQ       38
 
+#define DMAOR_INIT      (0x8000|DMAOR_DME)
+#define SH_DMAC_BASE0   0xffa00000
+#define SH_DMAC_BASE1   0xffa00070
 /* Definitions for the SuperH DMAC */
-#define TM_BURST        0x0000080
+#define TM_BURST        0x00000080
 #define TS_8            0x00000010
 #define TS_16           0x00000020
 #define TS_32           0x00000030