Merge tag 'sh-for-v6.5-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/glaubitz/sh-linux

Pull sh updates from Adrian Glaubitz:
 "Fix a compiler warning in the J2 probing code and a fix by Sergey
  Shtylyov to avoid using IRQ0 on SH3 and SH4 targets. Masahiro Yamada
  made some clean-up in the build system to address reports by the 0day
  bot.

  The most notable changes come from Artur Rojek who addressed a number
  of issues in the DMA code, in particular a fix for the DMA channel
  offset calculation that was introduced in in 7f47c7189b3e ("sh: dma:
  More legacy cpu dma chainsawing.") in 2012!

  Together with another change to correct the number of DMA channels for
  each SuperH SoC according to specification, Artur's series unbreaks
  the kernel on the SH7709 SoC allowing Linux to boot on the HP Jornada
  680 handheld again.

  Summary:

   - Provide unxlate_dev_mem_ptr() in asm/io.h

   - dma: Correct the number of DMA channels for SH7709

   - dma: Drop incorrect SH_DMAC_BASE1 definition for SH4

   - dma: Fix DMA channel offset calculation

   - Remove compiler flag duplication

   - Refactor header include path addition

   - Move build rule for cchips/hd6446x/ to arch/sh/Kbuild

   - Fix -Wmissing-include-dirs warnings for various platforms

   - Avoid using IRQ0 on SH3 and SH4

   - j2: Use ioremap() to translate device tree address into kernel
     memory"

* tag 'sh-for-v6.5-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/glaubitz/sh-linux:
  sh: Provide unxlate_dev_mem_ptr() in asm/io.h
  sh: dma: Correct the number of DMA channels for SH7709
  sh: dma: Drop incorrect SH_DMAC_BASE1 definition for SH4
  sh: dma: Fix DMA channel offset calculation
  sh: Remove compiler flag duplication
  sh: Refactor header include path addition
  sh: Move build rule for cchips/hd6446x/ to arch/sh/Kbuild
  sh: Fix -Wmissing-include-dirs warnings for various platforms
  sh: Avoid using IRQ0 on SH3 and SH4
  sh: j2: Use ioremap() to translate device tree address into kernel memory

14 files changed, 66 insertions, 54 deletions

diff --git a/arch/sh/Kbuild b/arch/sh/Kbuild
index be171880977e5d..056efec72c2a0b 100644
--- a/arch/sh/Kbuild
+++ b/arch/sh/Kbuild
@@ -3,5 +3,7 @@ obj-y				+= kernel/ mm/ boards/
 obj-$(CONFIG_SH_FPU_EMU)	+= math-emu/
 obj-$(CONFIG_USE_BUILTIN_DTB)	+= boot/dts/
 
+obj-$(CONFIG_HD6446X_SERIES)	+= cchips/hd6446x/
+
 # for cleaning
 subdir- += boot
diff --git a/arch/sh/Makefile b/arch/sh/Makefile
index 5c8776482530c3..cab2f9c011a8db 100644
--- a/arch/sh/Makefile
+++ b/arch/sh/Makefile
@@ -116,34 +116,15 @@ export ld-bfd
 
 # Mach groups
 machdir-$(CONFIG_SOLUTION_ENGINE)		+= mach-se
-machdir-$(CONFIG_SH_HP6XX)			+= mach-hp6xx
 machdir-$(CONFIG_SH_DREAMCAST)			+= mach-dreamcast
 machdir-$(CONFIG_SH_SH03)			+= mach-sh03
-machdir-$(CONFIG_SH_RTS7751R2D)			+= mach-r2d
-machdir-$(CONFIG_SH_HIGHLANDER)			+= mach-highlander
 machdir-$(CONFIG_SH_MIGOR)			+= mach-migor
-machdir-$(CONFIG_SH_AP325RXA)			+= mach-ap325rxa
 machdir-$(CONFIG_SH_KFR2R09)			+= mach-kfr2r09
 machdir-$(CONFIG_SH_ECOVEC)			+= mach-ecovec24
-machdir-$(CONFIG_SH_SDK7780)			+= mach-sdk7780
 machdir-$(CONFIG_SH_SDK7786)			+= mach-sdk7786
 machdir-$(CONFIG_SH_X3PROTO)			+= mach-x3proto
-machdir-$(CONFIG_SH_SH7763RDP)			+= mach-sh7763rdp
-machdir-$(CONFIG_SH_SH4202_MICRODEV)		+= mach-microdev
 machdir-$(CONFIG_SH_LANDISK)			+= mach-landisk
-machdir-$(CONFIG_SH_LBOX_RE2)			+= mach-lboxre2
-machdir-$(CONFIG_SH_RSK)			+= mach-rsk
-
-ifneq ($(machdir-y),)
-core-y	+= $(addprefix arch/sh/boards/, \
-	     $(filter-out ., $(patsubst %,%/,$(machdir-y))))
-endif
-
-# Common machine type headers. Not part of the arch/sh/boards/ hierarchy.
-machdir-y	+= mach-common
-
-# Companion chips
-core-$(CONFIG_HD6446X_SERIES)	+= arch/sh/cchips/hd6446x/
+machdir-y					+= mach-common
 
 #
 # CPU header paths
@@ -164,11 +145,8 @@ cpuincdir-y			+= cpu-common	# Must be last
 
 drivers-y			+= arch/sh/drivers/
 
-cflags-y	+= $(foreach d, $(cpuincdir-y), -I $(srctree)/arch/sh/include/$(d)) \
-		   $(foreach d, $(machdir-y), -I $(srctree)/arch/sh/include/$(d))
-
+KBUILD_CPPFLAGS		+= $(addprefix -I $(srctree)/arch/sh/include/, $(cpuincdir-y) $(machdir-y))
 KBUILD_CFLAGS		+= -pipe $(cflags-y)
-KBUILD_CPPFLAGS		+= $(cflags-y)
 KBUILD_AFLAGS		+= $(cflags-y)
 
 ifeq ($(CONFIG_MCOUNT),y)
diff --git a/arch/sh/boards/Makefile b/arch/sh/boards/Makefile
index 4002a22a7c409b..b57219436ace3e 100644
--- a/arch/sh/boards/Makefile
+++ b/arch/sh/boards/Makefile
@@ -18,3 +18,22 @@ obj-$(CONFIG_SH_APSH4A3A)	+= board-apsh4a3a.o
 obj-$(CONFIG_SH_APSH4AD0A)	+= board-apsh4ad0a.o
 
 obj-$(CONFIG_SH_DEVICE_TREE)	+= of-generic.o
+
+obj-$(CONFIG_SOLUTION_ENGINE)	+= mach-se/
+obj-$(CONFIG_SH_HP6XX)		+= mach-hp6xx/
+obj-$(CONFIG_SH_DREAMCAST)	+= mach-dreamcast/
+obj-$(CONFIG_SH_SH03)		+= mach-sh03/
+obj-$(CONFIG_SH_RTS7751R2D)	+= mach-r2d/
+obj-$(CONFIG_SH_HIGHLANDER)	+= mach-highlander/
+obj-$(CONFIG_SH_MIGOR)		+= mach-migor/
+obj-$(CONFIG_SH_AP325RXA)	+= mach-ap325rxa/
+obj-$(CONFIG_SH_KFR2R09)	+= mach-kfr2r09/
+obj-$(CONFIG_SH_ECOVEC)		+= mach-ecovec24/
+obj-$(CONFIG_SH_SDK7780)	+= mach-sdk7780/
+obj-$(CONFIG_SH_SDK7786)	+= mach-sdk7786/
+obj-$(CONFIG_SH_X3PROTO)	+= mach-x3proto/
+obj-$(CONFIG_SH_SH7763RDP)	+= mach-sh7763rdp/
+obj-$(CONFIG_SH_SH4202_MICRODEV)+= mach-microdev/
+obj-$(CONFIG_SH_LANDISK)	+= mach-landisk/
+obj-$(CONFIG_SH_LBOX_RE2)	+= mach-lboxre2/
+obj-$(CONFIG_SH_RSK)		+= mach-rsk/
diff --git a/arch/sh/drivers/dma/Kconfig b/arch/sh/drivers/dma/Kconfig
index 7d54f284ce10fb..08d937a6d249a6 100644
--- a/arch/sh/drivers/dma/Kconfig
+++ b/arch/sh/drivers/dma/Kconfig
@@ -28,17 +28,19 @@ config SH_DMA_API
 config NR_ONCHIP_DMA_CHANNELS
 	int
 	depends on SH_DMA
-	default "4" if CPU_SUBTYPE_SH7750  || CPU_SUBTYPE_SH7751  || \
-		       CPU_SUBTYPE_SH7750S || CPU_SUBTYPE_SH7091
+	default "4" if CPU_SUBTYPE_SH7709 || CPU_SUBTYPE_SH7750  || \
+		       CPU_SUBTYPE_SH7750S || CPU_SUBTYPE_SH7751 || \
+		       CPU_SUBTYPE_SH7091
 	default "8" if CPU_SUBTYPE_SH7750R || CPU_SUBTYPE_SH7751R || \
 		       CPU_SUBTYPE_SH7760
-	default "12" if CPU_SUBTYPE_SH7723 || CPU_SUBTYPE_SH7780  || \
-			CPU_SUBTYPE_SH7785 || CPU_SUBTYPE_SH7724
+	default "12" if CPU_SUBTYPE_SH7723 || CPU_SUBTYPE_SH7724  || \
+			CPU_SUBTYPE_SH7780 || CPU_SUBTYPE_SH7785
 	default "6"
 	help
 	  This allows you to specify the number of channels that the on-chip
-	  DMAC supports. This will be 4 for SH7750/SH7751/Sh7750S/SH7091 and 8 for the
-	  SH7750R/SH7751R/SH7760, 12 for the SH7723/SH7780/SH7785/SH7724, default is 6.
+	  DMAC supports. This will be 4 for SH7709/SH7750/SH7750S/SH7751/SH7091,
+	  8 for SH7750R/SH7751R/SH7760, and 12 for SH7723/SH7724/SH7780/SH7785.
+	  Default is 6.
 
 config SH_DMABRG
 	bool "SH7760 DMABRG support"
diff --git a/arch/sh/drivers/dma/dma-sh.c b/arch/sh/drivers/dma/dma-sh.c
index 96c626c2cd0a49..306fba1564e5e6 100644
--- a/arch/sh/drivers/dma/dma-sh.c
+++ b/arch/sh/drivers/dma/dma-sh.c
@@ -19,6 +19,18 @@
 #include <cpu/dma.h>
 
 /*
+ * Some of the SoCs feature two DMAC modules. In such a case, the channels are
+ * distributed equally among them.
+ */
+#ifdef	SH_DMAC_BASE1
+#define	SH_DMAC_NR_MD_CH	(CONFIG_NR_ONCHIP_DMA_CHANNELS / 2)
+#else
+#define	SH_DMAC_NR_MD_CH	CONFIG_NR_ONCHIP_DMA_CHANNELS
+#endif
+
+#define	SH_DMAC_CH_SZ		0x10
+
+/*
  * Define the default configuration for dual address memory-memory transfer.
  * The 0x400 value represents auto-request, external->external.
  */
@@ -29,7 +41,7 @@ static unsigned long dma_find_base(unsigned int chan)
 	unsigned long base = SH_DMAC_BASE0;
 
 #ifdef SH_DMAC_BASE1
-	if (chan >= 6)
+	if (chan >= SH_DMAC_NR_MD_CH)
 		base = SH_DMAC_BASE1;
 #endif
 
@@ -40,13 +52,13 @@ static unsigned long dma_base_addr(unsigned int chan)
 {
 	unsigned long base = dma_find_base(chan);
 
-	/* Normalize offset calculation */
-	if (chan >= 9)
-		chan -= 6;
-	if (chan >= 4)
-		base += 0x10;
+	chan = (chan % SH_DMAC_NR_MD_CH) * SH_DMAC_CH_SZ;
+
+	/* DMAOR is placed inside the channel register space. Step over it. */
+	if (chan >= DMAOR)
+		base += SH_DMAC_CH_SZ;
 
-	return base + (chan * 0x10);
+	return base + chan;
 }
 
 #ifdef CONFIG_SH_DMA_IRQ_MULTI
@@ -250,12 +262,11 @@ static int sh_dmac_get_dma_residue(struct dma_channel *chan)
 #define NR_DMAOR	1
 #endif
 
-/*
- * DMAOR bases are broken out amongst channel groups. DMAOR0 manages
- * channels 0 - 5, DMAOR1 6 - 11 (optional).
- */
-#define dmaor_read_reg(n)		__raw_readw(dma_find_base((n)*6))
-#define dmaor_write_reg(n, data)	__raw_writew(data, dma_find_base(n)*6)
+#define dmaor_read_reg(n)		__raw_readw(dma_find_base((n) * \
+						    SH_DMAC_NR_MD_CH) + DMAOR)
+#define dmaor_write_reg(n, data)	__raw_writew(data, \
+						     dma_find_base((n) * \
+						     SH_DMAC_NR_MD_CH) + DMAOR)
 
 static inline int dmaor_reset(int no)
 {
diff --git a/arch/sh/include/asm/io.h b/arch/sh/include/asm/io.h
index fba90e670ed41d..d8f3537ef57f9e 100644
--- a/arch/sh/include/asm/io.h
+++ b/arch/sh/include/asm/io.h
@@ -286,6 +286,7 @@ static inline void iounmap(volatile void __iomem *addr) { }
  * access
  */
 #define xlate_dev_mem_ptr(p)	__va(p)
+#define unxlate_dev_mem_ptr(p, v) do { } while (0)
 
 #define ARCH_HAS_VALID_PHYS_ADDR_RANGE
 int valid_phys_addr_range(phys_addr_t addr, size_t size);
diff --git a/arch/sh/include/cpu-sh4/cpu/dma.h b/arch/sh/include/cpu-sh4/cpu/dma.h
index 38187d06b23433..e97fb2c791778c 100644
--- a/arch/sh/include/cpu-sh4/cpu/dma.h
+++ b/arch/sh/include/cpu-sh4/cpu/dma.h
@@ -13,6 +13,5 @@
 #define DMAE0_IRQ	evt2irq(0x6c0)
 
 #define SH_DMAC_BASE0	0xffa00000
-#define SH_DMAC_BASE1	0xffa00070
 
 #endif /* __ASM_CPU_SH4_DMA_H */
diff --git a/arch/sh/include/mach-common/mach/highlander.h b/arch/sh/include/mach-common/mach/highlander.h
index fb44c299d0337e..b12c7955842253 100644
--- a/arch/sh/include/mach-common/mach/highlander.h
+++ b/arch/sh/include/mach-common/mach/highlander.h
@@ -176,7 +176,7 @@
 #define IVDR_CK_ON	4		/* iVDR Clock ON */
 #endif
 
-#define HL_FPGA_IRQ_BASE	200
+#define HL_FPGA_IRQ_BASE	(200 + 16)
 #define HL_NR_IRL		15
 
 #define IRQ_AX88796		(HL_FPGA_IRQ_BASE + 0)
diff --git a/arch/sh/include/mach-common/mach/r2d.h b/arch/sh/include/mach-common/mach/r2d.h
index 0d7e483c7d3f53..69bc1907c56370 100644
--- a/arch/sh/include/mach-common/mach/r2d.h
+++ b/arch/sh/include/mach-common/mach/r2d.h
@@ -47,7 +47,7 @@
 
 #define IRLCNTR1	(PA_BCR + 0)	/* Interrupt Control Register1 */
 
-#define R2D_FPGA_IRQ_BASE	100
+#define R2D_FPGA_IRQ_BASE	(100 + 16)
 
 #define IRQ_VOYAGER		(R2D_FPGA_IRQ_BASE + 0)
 #define IRQ_EXT			(R2D_FPGA_IRQ_BASE + 1)
diff --git a/arch/sh/include/mach-dreamcast/mach/sysasic.h b/arch/sh/include/mach-dreamcast/mach/sysasic.h
index ed69ce7f203012..3b27be9a527ea0 100644
--- a/arch/sh/include/mach-dreamcast/mach/sysasic.h
+++ b/arch/sh/include/mach-dreamcast/mach/sysasic.h
@@ -22,7 +22,7 @@
    takes.
 */
 
-#define HW_EVENT_IRQ_BASE  48
+#define HW_EVENT_IRQ_BASE  (48 + 16)
 
 /* IRQ 13 */
 #define HW_EVENT_VSYNC     (HW_EVENT_IRQ_BASE +  5) /* VSync */
diff --git a/arch/sh/include/mach-se/mach/se7724.h b/arch/sh/include/mach-se/mach/se7724.h
index 1fe28820dfa953..ea6c46633b3375 100644
--- a/arch/sh/include/mach-se/mach/se7724.h
+++ b/arch/sh/include/mach-se/mach/se7724.h
@@ -37,7 +37,7 @@
 #define IRQ2_IRQ        evt2irq(0x640)
 
 /* Bits in IRQ012 registers */
-#define SE7724_FPGA_IRQ_BASE	220
+#define SE7724_FPGA_IRQ_BASE	(220 + 16)
 
 /* IRQ0 */
 #define IRQ0_BASE	SE7724_FPGA_IRQ_BASE
diff --git a/arch/sh/kernel/cpu/sh2/probe.c b/arch/sh/kernel/cpu/sh2/probe.c
index d342ea08843f6a..70a07f4f2142f4 100644
--- a/arch/sh/kernel/cpu/sh2/probe.c
+++ b/arch/sh/kernel/cpu/sh2/probe.c
@@ -21,7 +21,7 @@ static int __init scan_cache(unsigned long node, const char *uname,
 	if (!of_flat_dt_is_compatible(node, "jcore,cache"))
 		return 0;
 
-	j2_ccr_base = (u32 __iomem *)of_flat_dt_translate_address(node);
+	j2_ccr_base = ioremap(of_flat_dt_translate_address(node), 4);
 
 	return 1;
 }
diff --git a/arch/sh/kernel/cpu/sh3/entry.S b/arch/sh/kernel/cpu/sh3/entry.S
index e48b3dd996f58d..b1f5b3c58a018c 100644
--- a/arch/sh/kernel/cpu/sh3/entry.S
+++ b/arch/sh/kernel/cpu/sh3/entry.S
@@ -470,9 +470,9 @@ ENTRY(handle_interrupt)
 	mov	r4, r0		! save vector->jmp table offset for later
 
 	shlr2	r4		! vector to IRQ# conversion
-	add	#-0x10, r4
 
-	cmp/pz	r4		! is it a valid IRQ?
+	mov	#0x10, r5
+	cmp/hs	r5, r4		! is it a valid IRQ?
 	bt	10f
 
 	/*
diff --git a/include/linux/sh_intc.h b/include/linux/sh_intc.h
index 37ad81058d6aed..27ae79191bdc37 100644
--- a/include/linux/sh_intc.h
+++ b/include/linux/sh_intc.h
@@ -13,9 +13,9 @@
 /*
  * Convert back and forth between INTEVT and IRQ values.
  */
-#ifdef CONFIG_CPU_HAS_INTEVT
-#define evt2irq(evt)		(((evt) >> 5) - 16)
-#define irq2evt(irq)		(((irq) + 16) << 5)
+#ifdef CONFIG_CPU_HAS_INTEVT	/* Avoid IRQ0 (invalid for platform devices) */
+#define evt2irq(evt)		((evt) >> 5)
+#define irq2evt(irq)		((irq) << 5)
 #else
 #define evt2irq(evt)		(evt)
 #define irq2evt(irq)		(irq)