sh: multiple vectors per irq - sh7750

Update intc tables and platform data to use one linux irq
per maskable interrupt source instead of keeping the one-to-one
mapping between vectors and linux irqs.

This fixes potential irq masking issues for sh775x hardware
blocks such as SCI/SCIF/RTC/DMAC/TMU2/REF.

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

1 files changed, 25 insertions, 62 deletions

diff --git a/arch/sh/kernel/cpu/sh4/setup-sh7750.c b/arch/sh/kernel/cpu/sh4/setup-sh7750.c
index ec884039b914..a1c80d909cd6 100644
--- a/arch/sh/kernel/cpu/sh4/setup-sh7750.c
+++ b/arch/sh/kernel/cpu/sh4/setup-sh7750.c
@@ -21,17 +21,7 @@ static struct resource rtc_resources[] = {
                 .flags  = IORESOURCE_IO,
         },
         [1] = {
-                /* Period IRQ */
-                .start  = 21,
-                .flags  = IORESOURCE_IRQ,
-        },
-        [2] = {
-                /* Carry IRQ */
-                .start  = 22,
-                .flags  = IORESOURCE_IRQ,
-        },
-        [3] = {
-                /* Alarm IRQ */
+                /* Shared Period/Carry/Alarm IRQ */
                 .start  = 20,
                 .flags  = IORESOURCE_IRQ,
         },
@@ -50,13 +40,13 @@ static struct plat_sci_port sci_platform_data[] = {
                 .mapbase        = 0xffe00000,
                 .flags          = UPF_BOOT_AUTOCONF,
                 .type           = PORT_SCI,
-                .irqs           = { 23, 24, 25, 0 },
+                .irqs           = { 23, 23, 23, 0 },
         }, {
 #endif
                 .mapbase        = 0xffe80000,
                 .flags          = UPF_BOOT_AUTOCONF,
                 .type           = PORT_SCIF,
-                .irqs           = { 40, 41, 43, 42 },
+                .irqs           = { 40, 40, 40, 40 },
         }, {
                 .flags = 0,
         }
@@ -87,43 +77,27 @@ enum {
 
         /* interrupt sources */
         IRL0, IRL1, IRL2, IRL3, /* only IRLM mode supported */
-        HUDI, GPIOI,
-        DMAC_DMTE0, DMAC_DMTE1, DMAC_DMTE2, DMAC_DMTE3,
-        DMAC_DMTE4, DMAC_DMTE5, DMAC_DMTE6, DMAC_DMTE7,
-        DMAC_DMAE,
+        HUDI, GPIOI, DMAC,
         PCIC0_PCISERR, PCIC1_PCIERR, PCIC1_PCIPWDWN, PCIC1_PCIPWON,
         PCIC1_PCIDMA0, PCIC1_PCIDMA1, PCIC1_PCIDMA2, PCIC1_PCIDMA3,
-        TMU3, TMU4, TMU0, TMU1, TMU2_TUNI, TMU2_TICPI,
-        RTC_ATI, RTC_PRI, RTC_CUI,
-        SCI1_ERI, SCI1_RXI, SCI1_TXI, SCI1_TEI,
-        SCIF_ERI, SCIF_RXI, SCIF_BRI, SCIF_TXI,
-        WDT,
-        REF_RCMI, REF_ROVI,
+        TMU3, TMU4, TMU0, TMU1, TMU2, RTC, SCI1, SCIF, WDT, REF,
 
         /* interrupt groups */
-        DMAC, PCIC1, TMU2, RTC, SCI1, SCIF, REF,
+        PCIC1,
 };
 
 static struct intc_vect vectors[] __initdata = {
         INTC_VECT(HUDI, 0x600), INTC_VECT(GPIOI, 0x620),
         INTC_VECT(TMU0, 0x400), INTC_VECT(TMU1, 0x420),
-        INTC_VECT(TMU2_TUNI, 0x440), INTC_VECT(TMU2_TICPI, 0x460),
-        INTC_VECT(RTC_ATI, 0x480), INTC_VECT(RTC_PRI, 0x4a0),
-        INTC_VECT(RTC_CUI, 0x4c0),
-        INTC_VECT(SCI1_ERI, 0x4e0), INTC_VECT(SCI1_RXI, 0x500),
-        INTC_VECT(SCI1_TXI, 0x520), INTC_VECT(SCI1_TEI, 0x540),
-        INTC_VECT(SCIF_ERI, 0x700), INTC_VECT(SCIF_RXI, 0x720),
-        INTC_VECT(SCIF_BRI, 0x740), INTC_VECT(SCIF_TXI, 0x760),
+        INTC_VECT(TMU2, 0x440), INTC_VECT(TMU2, 0x460),
+        INTC_VECT(RTC, 0x480), INTC_VECT(RTC, 0x4a0),
+        INTC_VECT(RTC, 0x4c0),
+        INTC_VECT(SCI1, 0x4e0), INTC_VECT(SCI1, 0x500),
+        INTC_VECT(SCI1, 0x520), INTC_VECT(SCI1, 0x540),
+        INTC_VECT(SCIF, 0x700), INTC_VECT(SCIF, 0x720),
+        INTC_VECT(SCIF, 0x740), INTC_VECT(SCIF, 0x760),
         INTC_VECT(WDT, 0x560),
-        INTC_VECT(REF_RCMI, 0x580), INTC_VECT(REF_ROVI, 0x5a0),
-};
-
-static struct intc_group groups[] __initdata = {
-        INTC_GROUP(TMU2, TMU2_TUNI, TMU2_TICPI),
-        INTC_GROUP(RTC, RTC_ATI, RTC_PRI, RTC_CUI),
-        INTC_GROUP(SCI1, SCI1_ERI, SCI1_RXI, SCI1_TXI, SCI1_TEI),
-        INTC_GROUP(SCIF, SCIF_ERI, SCIF_RXI, SCIF_BRI, SCIF_TXI),
-        INTC_GROUP(REF, REF_RCMI, REF_ROVI),
+        INTC_VECT(REF, 0x580), INTC_VECT(REF, 0x5a0),
 };
 
 static struct intc_prio_reg prio_registers[] __initdata = {
@@ -136,7 +110,7 @@ static struct intc_prio_reg prio_registers[] __initdata = {
                                                  PCIC1, PCIC0_PCISERR } },
 };
 
-static DECLARE_INTC_DESC(intc_desc, "sh7750", vectors, groups,
+static DECLARE_INTC_DESC(intc_desc, "sh7750", vectors, NULL,
                          NULL, prio_registers, NULL);
 
 /* SH7750, SH7750S, SH7751 and SH7091 all have 4-channel DMA controllers */
@@ -145,39 +119,28 @@ static DECLARE_INTC_DESC(intc_desc, "sh7750", vectors, groups,
         defined(CONFIG_CPU_SUBTYPE_SH7751) || \
         defined(CONFIG_CPU_SUBTYPE_SH7091)
 static struct intc_vect vectors_dma4[] __initdata = {
-        INTC_VECT(DMAC_DMTE0, 0x640), INTC_VECT(DMAC_DMTE1, 0x660),
-        INTC_VECT(DMAC_DMTE2, 0x680), INTC_VECT(DMAC_DMTE3, 0x6a0),
-        INTC_VECT(DMAC_DMAE, 0x6c0),
-};
-
-static struct intc_group groups_dma4[] __initdata = {
-        INTC_GROUP(DMAC, DMAC_DMTE0, DMAC_DMTE1, DMAC_DMTE2,
-                   DMAC_DMTE3, DMAC_DMAE),
+        INTC_VECT(DMAC, 0x640), INTC_VECT(DMAC, 0x660),
+        INTC_VECT(DMAC, 0x680), INTC_VECT(DMAC, 0x6a0),
+        INTC_VECT(DMAC, 0x6c0),
 };
 
 static DECLARE_INTC_DESC(intc_desc_dma4, "sh7750_dma4",
-                         vectors_dma4, groups_dma4,
+                         vectors_dma4, NULL,
                          NULL, prio_registers, NULL);
 #endif
 
 /* SH7750R and SH7751R both have 8-channel DMA controllers */
 #if defined(CONFIG_CPU_SUBTYPE_SH7750R) || defined(CONFIG_CPU_SUBTYPE_SH7751R)
 static struct intc_vect vectors_dma8[] __initdata = {
-        INTC_VECT(DMAC_DMTE0, 0x640), INTC_VECT(DMAC_DMTE1, 0x660),
-        INTC_VECT(DMAC_DMTE2, 0x680), INTC_VECT(DMAC_DMTE3, 0x6a0),
-        INTC_VECT(DMAC_DMTE4, 0x780), INTC_VECT(DMAC_DMTE5, 0x7a0),
-        INTC_VECT(DMAC_DMTE6, 0x7c0), INTC_VECT(DMAC_DMTE7, 0x7e0),
-        INTC_VECT(DMAC_DMAE, 0x6c0),
-};
-
-static struct intc_group groups_dma8[] __initdata = {
-        INTC_GROUP(DMAC, DMAC_DMTE0, DMAC_DMTE1, DMAC_DMTE2,
-                   DMAC_DMTE3, DMAC_DMTE4, DMAC_DMTE5,
-                   DMAC_DMTE6, DMAC_DMTE7, DMAC_DMAE),
+        INTC_VECT(DMAC, 0x640), INTC_VECT(DMAC, 0x660),
+        INTC_VECT(DMAC, 0x680), INTC_VECT(DMAC, 0x6a0),
+        INTC_VECT(DMAC, 0x780), INTC_VECT(DMAC, 0x7a0),
+        INTC_VECT(DMAC, 0x7c0), INTC_VECT(DMAC, 0x7e0),
+        INTC_VECT(DMAC, 0x6c0),
 };
 
 static DECLARE_INTC_DESC(intc_desc_dma8, "sh7750_dma8",
-                         vectors_dma8, groups_dma8,
+                         vectors_dma8, NULL,
                          NULL, prio_registers, NULL);
 #endif