sh: intc - add support for 7722 processor

This patch converts the cpu specific 7722 setup code to use the
new intc controller. Many new vectors are added and also support
for external interrupt sense configuration. So with this patch
it is now possible to configure external interrupt pins as edge
or level triggered using set_irq_type().

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

3 files changed, 131 insertions, 31 deletions

diff --git a/arch/sh/kernel/cpu/sh4a/setup-sh7722.c b/arch/sh/kernel/cpu/sh4a/setup-sh7722.c
index d3d444a900e..9d87e36a4af 100644
--- a/arch/sh/kernel/cpu/sh4a/setup-sh7722.c
+++ b/arch/sh/kernel/cpu/sh4a/setup-sh7722.c
@@ -57,45 +57,145 @@ static int __init sh7722_devices_setup(void)
 }
 __initcall(sh7722_devices_setup);
 
-static struct ipr_data ipr_irq_table[] = {
-	/* IRQ, IPR-idx, shift, prio */
-	{ 16, 0, 12, 2 }, /* TMU0 */
-	{ 17, 0,  8, 2 }, /* TMU1 */
-	{ 80, 6, 12, 3 }, /* SCIF0 */
-	{ 81, 6, 8, 3 },  /* SCIF1 */
-	{ 82, 6, 4, 3 },  /* SCIF2 */
+enum {
+	UNUSED=0,
+
+	/* interrupt sources */
+	IRQ0, IRQ1, IRQ2, IRQ3, IRQ4, IRQ5, IRQ6, IRQ7,
+	HUDI,
+	SIM_ERI, SIM_RXI, SIM_TXI, SIM_TEI,
+	RTC_ATI, RTC_PRI, RTC_CUI,
+	DMAC0, DMAC1, DMAC2, DMAC3,
+	VIO_CEUI, VIO_BEUI, VIO_VEUI, VOU,
+	VPU, TPU,
+	USB_USBI0, USB_USBI1,
+	DMAC4, DMAC5, DMAC_DADERR,
+	KEYSC,
+	SCIF0, SCIF1, SCIF2, SIOF0, SIOF1, SIO,
+	FLCTL_FLSTEI, FLCTL_FLENDI, FLCTL_FLTREQ0I, FLCTL_FLTREQ1I,
+	I2C_ALI, I2C_TACKI, I2C_WAITI, I2C_DTEI,
+	SDHI0, SDHI1, SDHI2, SDHI3,
+	CMT, TSIF, SIU, TWODG,
+	TMU0, TMU1, TMU2,
+	IRDA, JPU, LCDC,
+
+	/* interrupt groups */
+
+	SIM, RTC, DMAC0123, VIOVOU, USB, DMAC45, FLCTL, I2C, SDHI,
 };
 
-static unsigned long ipr_offsets[] = {
-	0xa4080000, /*  0: IPRA */
-	0xa4080004, /*  1: IPRB */
-	0xa4080008, /*  2: IPRC */
-	0xa408000c, /*  3: IPRD */
-	0xa4080010, /*  4: IPRE */
-	0xa4080014, /*  5: IPRF */
-	0xa4080018, /*  6: IPRG */
-	0xa408001c, /*  7: IPRH */
-	0xa4080020, /*  8: IPRI */
-	0xa4080024, /*  9: IPRJ */
-	0xa4080028, /* 10: IPRK */
-	0xa408002c, /* 11: IPRL */
+static struct intc_vect vectors[] = {
+	INTC_VECT(IRQ0, 0x600), INTC_VECT(IRQ1, 0x620),
+	INTC_VECT(IRQ2, 0x640), INTC_VECT(IRQ3, 0x660),
+	INTC_VECT(IRQ4, 0x680), INTC_VECT(IRQ5, 0x6a0),
+	INTC_VECT(IRQ6, 0x6c0), INTC_VECT(IRQ7, 0x6e0),
+	INTC_VECT(SIM_ERI, 0x700), INTC_VECT(SIM_RXI, 0x720),
+	INTC_VECT(SIM_TXI, 0x740), INTC_VECT(SIM_TEI, 0x760),
+	INTC_VECT(RTC_ATI, 0x780), INTC_VECT(RTC_PRI, 0x7a0),
+	INTC_VECT(RTC_CUI, 0x7c0),
+	INTC_VECT(DMAC0, 0x800), INTC_VECT(DMAC1, 0x820),
+	INTC_VECT(DMAC2, 0x840), INTC_VECT(DMAC3, 0x860),
+	INTC_VECT(VIO_CEUI, 0x880), INTC_VECT(VIO_BEUI, 0x8a0),
+	INTC_VECT(VIO_VEUI, 0x8c0), INTC_VECT(VOU, 0x8e0),
+	INTC_VECT(VPU, 0x980), INTC_VECT(TPU, 0x9a0),
+	INTC_VECT(USB_USBI0, 0xa20), INTC_VECT(USB_USBI1, 0xa40),
+	INTC_VECT(DMAC4, 0xb80), INTC_VECT(DMAC5, 0xba0),
+	INTC_VECT(DMAC_DADERR, 0xbc0), INTC_VECT(KEYSC, 0xbe0),
+	INTC_VECT(SCIF0, 0xc00), INTC_VECT(SCIF1, 0xc20),
+	INTC_VECT(SCIF2, 0xc40), INTC_VECT(SIOF0, 0xc80),
+	INTC_VECT(SIOF1, 0xca0), INTC_VECT(SIO, 0xd00),
+	INTC_VECT(FLCTL_FLSTEI, 0xd80), INTC_VECT(FLCTL_FLENDI, 0xda0),
+	INTC_VECT(FLCTL_FLTREQ0I, 0xdc0), INTC_VECT(FLCTL_FLTREQ1I, 0xde0),
+	INTC_VECT(I2C_ALI, 0xe00), INTC_VECT(I2C_TACKI, 0xe20),
+	INTC_VECT(I2C_WAITI, 0xe40), INTC_VECT(I2C_DTEI, 0xe60),
+	INTC_VECT(SDHI0, 0xe80), INTC_VECT(SDHI1, 0xea0),
+	INTC_VECT(SDHI2, 0xec0), INTC_VECT(SDHI3, 0xee0),
+	INTC_VECT(CMT, 0xf00), INTC_VECT(TSIF, 0xf20),
+	INTC_VECT(SIU, 0xf80), INTC_VECT(TWODG, 0xfa0),
+	INTC_VECT(TMU0, 0x400), INTC_VECT(TMU1, 0x420),
+	INTC_VECT(TMU2, 0x440), INTC_VECT(IRDA, 0x480),
+	INTC_VECT(JPU, 0x560), INTC_VECT(LCDC, 0x580),
 };
 
-static struct ipr_desc ipr_irq_desc = {
-	.ipr_offsets	= ipr_offsets,
-	.nr_offsets	= ARRAY_SIZE(ipr_offsets),
+static struct intc_group groups[] = {
+	INTC_GROUP(SIM, SIM_ERI, SIM_RXI, SIM_TXI, SIM_TEI),
+	INTC_GROUP(RTC, RTC_ATI, RTC_PRI, RTC_CUI),
+	INTC_GROUP(DMAC0123, DMAC0, DMAC1, DMAC2, DMAC3),
+	INTC_GROUP(VIOVOU, VIO_CEUI, VIO_BEUI, VIO_VEUI, VOU),
+	INTC_GROUP(USB, USB_USBI0, USB_USBI1),
+	INTC_GROUP(DMAC45, DMAC4, DMAC5, DMAC_DADERR),
+	INTC_GROUP(FLCTL, FLCTL_FLSTEI, FLCTL_FLENDI,
+		   FLCTL_FLTREQ0I, FLCTL_FLTREQ1I),
+	INTC_GROUP(I2C, I2C_ALI, I2C_TACKI, I2C_WAITI, I2C_DTEI),
+	INTC_GROUP(SDHI, SDHI0, SDHI1, SDHI2, SDHI3),
+};
 
-	.ipr_data	= ipr_irq_table,
-	.nr_irqs	= ARRAY_SIZE(ipr_irq_table),
+static struct intc_prio priorities[] = {
+	INTC_PRIO(SCIF0, 3),
+	INTC_PRIO(SCIF1, 3),
+	INTC_PRIO(SCIF2, 3),
+	INTC_PRIO(TMU0, 2),
+	INTC_PRIO(TMU1, 2),
+};
 
-	.chip = {
-		.name	= "IPR-sh7722",
-	},
+static struct intc_mask_reg mask_registers[] = {
+	{ 0xa4080080, 0xa40800c0, 8, /* IMR0 / IMCR0 */
+	  { } },
+	{ 0xa4080084, 0xa40800c4, 8, /* IMR1 / IMCR1 */
+	  { VOU, VIO_VEUI, VIO_BEUI, VIO_CEUI, DMAC3, DMAC2, DMAC1, DMAC0 } },
+	{ 0xa4080088, 0xa40800c8, 8, /* IMR2 / IMCR2 */
+	  { 0, 0, 0, VPU, } },
+	{ 0xa408008c, 0xa40800cc, 8, /* IMR3 / IMCR3 */
+	  { SIM_TEI, SIM_TXI, SIM_RXI, SIM_ERI, 0, 0, 0, IRDA } },
+	{ 0xa4080090, 0xa40800d0, 8, /* IMR4 / IMCR4 */
+	  { 0, TMU2, TMU1, TMU0, JPU, 0, 0, LCDC } },
+	{ 0xa4080094, 0xa40800d4, 8, /* IMR5 / IMCR5 */
+	  { KEYSC, DMAC_DADERR, DMAC5, DMAC4, 0, SCIF2, SCIF1, SCIF0 } },
+	{ 0xa4080098, 0xa40800d8, 8, /* IMR6 / IMCR6 */
+	  { 0, 0, 0, SIO, 0, 0, SIOF1, SIOF0 } },
+	{ 0xa408009c, 0xa40800dc, 8, /* IMR7 / IMCR7 */
+	  { I2C_DTEI, I2C_WAITI, I2C_TACKI, I2C_ALI,
+	    FLCTL_FLTREQ1I, FLCTL_FLTREQ0I, FLCTL_FLENDI, FLCTL_FLSTEI } },
+	{ 0xa40800a0, 0xa40800e0, 8, /* IMR8 / IMCR8 */
+	  { SDHI3, SDHI2, SDHI1, SDHI0, 0, 0, TWODG, SIU } },
+	{ 0xa40800a4, 0xa40800e4, 8, /* IMR9 / IMCR9 */
+	  { 0, 0, 0, CMT, 0, USB_USBI1, USB_USBI0, } },
+	{ 0xa40800a8, 0xa40800e8, 8, /* IMR10 / IMCR10 */
+	  { } },
+	{ 0xa40800ac, 0xa40800ec, 8, /* IMR11 / IMCR11 */
+	  { 0, RTC_CUI, RTC_PRI, RTC_ATI, 0, TPU, 0, TSIF } },
+	{ 0xa4140044, 0xa4140064, 8, /* INTMSK00 / INTMSKCLR00 */
+	  { IRQ0, IRQ1, IRQ2, IRQ3, IRQ4, IRQ5, IRQ6, IRQ7 } },
 };
 
+static struct intc_prio_reg prio_registers[] = {
+	{ 0xa4080000, 16, 4, /* IPRA */ { TMU0, TMU1, TMU2, IRDA } },
+	{ 0xa4080004, 16, 4, /* IPRB */ { JPU, LCDC, SIM } },
+	{ 0xa4080008, 16, 4, /* IPRC */ { } },
+	{ 0xa408000c, 16, 4, /* IPRD */ { } },
+	{ 0xa4080010, 16, 4, /* IPRE */ { DMAC0123, VIOVOU, 0, VPU } },
+	{ 0xa4080014, 16, 4, /* IPRF */ { KEYSC, DMAC45, USB, CMT } },
+	{ 0xa4080018, 16, 4, /* IPRG */ { SCIF0, SCIF1, SCIF2 } },
+	{ 0xa408001c, 16, 4, /* IPRH */ { SIOF0, SIOF1, FLCTL, I2C } },
+	{ 0xa4080020, 16, 4, /* IPRI */ { SIO, 0, TSIF, RTC } },
+	{ 0xa4080024, 16, 4, /* IPRJ */ { 0, 0, SIU } },
+	{ 0xa4080028, 16, 4, /* IPRK */ { 0, 0, 0, SDHI } },
+	{ 0xa408002c, 16, 4, /* IPRL */ { TWODG, 0, TPU } },
+	{ 0xa4140010, 32, 4, /* INTPRI00 */
+	  { IRQ0, IRQ1, IRQ2, IRQ3, IRQ4, IRQ5, IRQ6, IRQ7 } },
+};
+
+static struct intc_sense_reg sense_registers[] = {
+	{ 0xa414001c, 16, 2, /* ICR1 */
+	  { IRQ0, IRQ1, IRQ2, IRQ3, IRQ4, IRQ5, IRQ6, IRQ7 } },
+};
+
+static DECLARE_INTC_DESC(intc_desc, "sh7722", vectors, groups, priorities,
+			 mask_registers, prio_registers, sense_registers);
+
 void __init init_IRQ_ipr(void)
 {
-	register_ipr_controller(&ipr_irq_desc);
+	register_intc_controller(&intc_desc);
 }
 
 void __init plat_mem_setup(void)
diff --git a/arch/sh/mm/Kconfig b/arch/sh/mm/Kconfig
index 28d79a474cd..7c087297c70 100644
--- a/arch/sh/mm/Kconfig
+++ b/arch/sh/mm/Kconfig
@@ -217,7 +217,7 @@ config CPU_SUBTYPE_SH7722
 	bool "Support SH7722 processor"
 	select CPU_SH4AL_DSP
 	select CPU_SHX2
-	select CPU_HAS_IPR_IRQ
+	select CPU_HAS_INTC_IRQ
 	select ARCH_SPARSEMEM_ENABLE
 	select SYS_SUPPORTS_NUMA
 
diff --git a/include/asm-sh/hw_irq.h b/include/asm-sh/hw_irq.h
index 34ff8c7cfb5..6c21cf0dd51 100644
--- a/include/asm-sh/hw_irq.h
+++ b/include/asm-sh/hw_irq.h
@@ -105,7 +105,7 @@ struct intc_desc {
 #define _INTC_ARRAY(a) a, sizeof(a)/sizeof(*a)
 #define DECLARE_INTC_DESC(symbol, chipname, vectors, groups,		\
 	priorities, mask_regs, prio_regs, sense_regs)			\
-static struct intc_desc symbol = {					\
+struct intc_desc symbol = {						\
 	_INTC_ARRAY(vectors), _INTC_ARRAY(groups),			\
 	_INTC_ARRAY(priorities),					\
 	_INTC_ARRAY(mask_regs), _INTC_ARRAY(prio_regs),			\