sh: intc - add support for SH7705

This patch converts the cpu specific interrupt setup code for
sh7705 from ipr to intc. While at it new vectors are added to
match the information provided by the datasheet.

Vectors for IRQ4 and IRQ5 are enabled by default.

Use plat_irq_setup_pins() if pins IRQ0-3 should be used in IRQ mode.

This patch also adds sh7705 specific platform data for the rtc driver.

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

1 files changed, 118 insertions, 44 deletions

diff --git a/arch/sh/kernel/cpu/sh3/setup-sh7705.c b/arch/sh/kernel/cpu/sh3/setup-sh7705.c
index ebd9d06d8bdd..fb5802543e9a 100644
--- a/arch/sh/kernel/cpu/sh3/setup-sh7705.c
+++ b/arch/sh/kernel/cpu/sh3/setup-sh7705.c
@@ -10,9 +10,90 @@
  */
 #include <linux/platform_device.h>
 #include <linux/init.h>
+#include <linux/irq.h>
 #include <linux/serial.h>
 #include <asm/sci.h>
 
+enum{ 
+        UNUSED = 0,
+
+        /* interrupt sources */
+        IRQ0, IRQ1, IRQ2, IRQ3, IRQ4, IRQ5,
+        PINT07, PINT815,
+        DMAC_DEI0, DMAC_DEI1, DMAC_DEI2, DMAC_DEI3,
+        SCIF0_ERI, SCIF0_RXI, SCIF0_TXI,
+        SCIF2_ERI, SCIF2_RXI, SCIF2_TXI,
+        ADC_ADI,
+        USB_USI0, USB_USI1,
+        TPU0, TPU1, TPU2, TPU3,
+        TMU0, TMU1, TMU2_TUNI, TMU2_TICPI,
+        RTC_ATI, RTC_PRI, RTC_CUI,
+        WDT,
+        REF_RCMI,
+
+        /* interrupt groups */
+        RTC, TMU2, DMAC, USB, SCIF2, SCIF0,
+};
+
+static struct intc_vect vectors[] = {
+        INTC_VECT(IRQ4, 0x680), INTC_VECT(IRQ5, 0x6a0),
+        INTC_VECT(PINT07, 0x700), INTC_VECT(PINT815, 0x720),
+        INTC_VECT(DMAC_DEI0, 0x800), INTC_VECT(DMAC_DEI1, 0x820),
+        INTC_VECT(DMAC_DEI2, 0x840), INTC_VECT(DMAC_DEI3, 0x860),
+        INTC_VECT(SCIF0_ERI, 0x880), INTC_VECT(SCIF0_RXI, 0x8a0),
+        INTC_VECT(SCIF0_TXI, 0x8e0),
+        INTC_VECT(SCIF2_ERI, 0x900), INTC_VECT(SCIF2_RXI, 0x920),
+        INTC_VECT(SCIF2_TXI, 0x960),
+        INTC_VECT(ADC_ADI, 0x980),
+        INTC_VECT(USB_USI0, 0xa20), INTC_VECT(USB_USI1, 0xa40),
+        INTC_VECT(TPU0, 0xc00), INTC_VECT(TPU1, 0xc20),
+        INTC_VECT(TPU3, 0xc80), INTC_VECT(TPU1, 0xca0),
+        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(WDT, 0x560),
+        INTC_VECT(REF_RCMI, 0x580),
+};
+
+static struct intc_group groups[] = {
+        INTC_GROUP(RTC, RTC_ATI, RTC_PRI, RTC_CUI),
+        INTC_GROUP(TMU2, TMU2_TUNI, TMU2_TICPI),
+        INTC_GROUP(DMAC, DMAC_DEI0, DMAC_DEI1, DMAC_DEI2, DMAC_DEI3),
+        INTC_GROUP(USB, USB_USI0, USB_USI1),
+        INTC_GROUP(SCIF0, SCIF0_ERI, SCIF0_RXI, SCIF0_TXI),
+        INTC_GROUP(SCIF2, SCIF2_ERI, SCIF2_RXI, SCIF2_TXI),
+};
+
+static struct intc_prio priorities[] = {
+        INTC_PRIO(DMAC, 7),
+        INTC_PRIO(SCIF2, 3),
+        INTC_PRIO(SCIF0, 3),
+};
+
+static struct intc_prio_reg prio_registers[] = {
+        { 0xfffffee2, 16, 4, /* IPRA */ { TMU0, TMU1, TMU2, RTC } },
+        { 0xfffffee4, 16, 4, /* IPRB */ { WDT, REF_RCMI, 0, 0 } },
+        { 0xa4000016, 16, 4, /* IPRC */ { IRQ3, IRQ2, IRQ1, IRQ0 } },
+        { 0xa4000018, 16, 4, /* IPRD */ { PINT07, PINT815, IRQ4, IRQ5 } },
+        { 0xa400001a, 16, 4, /* IPRE */ { DMAC, SCIF0, SCIF2, ADC_ADI } },
+        { 0xa4080000, 16, 4, /* IPRF */ { 0, 0, USB } },
+        { 0xa4080002, 16, 4, /* IPRG */ { TPU0, TPU1 } },
+        { 0xa4080004, 16, 4, /* IPRH */ { TPU2, TPU3 } },
+
+};
+
+static DECLARE_INTC_DESC(intc_desc, "sh7705", vectors, groups,
+                         priorities, NULL, prio_registers, NULL);
+
+static struct intc_vect vectors_irq[] = {
+        INTC_VECT(IRQ0, 0x600), INTC_VECT(IRQ1, 0x620),
+        INTC_VECT(IRQ2, 0x640), INTC_VECT(IRQ3, 0x660),
+};
+
+static DECLARE_INTC_DESC(intc_desc_irq, "sh7705-irq", vectors_irq, NULL,
+                         priorities, NULL, prio_registers, NULL);
+
 static struct plat_sci_port sci_platform_data[] = {
         {
                 .mapbase        = 0xa4410000,
@@ -37,8 +118,36 @@ static struct platform_device sci_device = {
         },
 };
 
+static struct resource rtc_resources[] = {
+        [0] =   {
+                .start  = 0xfffffec0,
+                .end    = 0xfffffec0 + 0x1e,
+                .flags  = IORESOURCE_IO,
+        },
+        [1] =   {
+                .start  = 20,
+                .flags  = IORESOURCE_IRQ,
+        },
+        [2] =   {
+                .start  = 21,
+                .flags  = IORESOURCE_IRQ,
+        },
+        [3] =   {
+                .start  = 22,
+                .flags  = IORESOURCE_IRQ,
+        },
+};
+
+static struct platform_device rtc_device = {
+        .name           = "sh-rtc",
+        .id             = -1,
+        .num_resources  = ARRAY_SIZE(rtc_resources),
+        .resource       = rtc_resources,
+};
+
 static struct platform_device *sh7705_devices[] __initdata = {
         &sci_device,
+        &rtc_device,
 };
 
 static int __init sh7705_devices_setup(void)
@@ -48,51 +157,16 @@ static int __init sh7705_devices_setup(void)
 }
 __initcall(sh7705_devices_setup);
 
-static struct ipr_data ipr_irq_table[] = {
-        /* IRQ, IPR-idx, shift, priority */
-        { 16, 0, 12, 2 }, /* TMU0 TUNI*/
-        { 17, 0,  8, 2 }, /* TMU1 TUNI */
-        { 18, 0,  4, 2 }, /* TMU2 TUNI */
-        { 27, 1, 12, 2 }, /* WDT ITI */
-        { 20, 0,  0, 2 }, /* RTC ATI (alarm) */
-        { 21, 0,  0, 2 }, /* RTC PRI (period) */
-        { 22, 0,  0, 2 }, /* RTC CUI (carry) */
-        { 48, 4, 12, 7 }, /* DMAC DMTE0 */
-        { 49, 4, 12, 7 }, /* DMAC DMTE1 */
-        { 50, 4, 12, 7 }, /* DMAC DMTE2 */
-        { 51, 4, 12, 7 }, /* DMAC DMTE3 */
-        { 52, 4,  8, 3 }, /* SCIF0 ERI */
-        { 53, 4,  8, 3 }, /* SCIF0 RXI */
-        { 55, 4,  8, 3 }, /* SCIF0 TXI */
-        { 56, 4,  4, 3 }, /* SCIF1 ERI */
-        { 57, 4,  4, 3 }, /* SCIF1 RXI */
-        { 59, 4,  4, 3 }, /* SCIF1 TXI */
-};
-
-static unsigned long ipr_offsets[] = {
-        0xFFFFFEE2,     /* 0: IPRA */
-        0xFFFFFEE4,     /* 1: IPRB */
-        0xA4000016,     /* 2: IPRC */
-        0xA4000018,     /* 3: IPRD */
-        0xA400001A,     /* 4: IPRE */
-        0xA4080000,     /* 5: IPRF */
-        0xA4080002,     /* 6: IPRG */
-        0xA4080004,     /* 7: IPRH */
-};
-
-static struct ipr_desc ipr_irq_desc = {
-        .ipr_offsets    = ipr_offsets,
-        .nr_offsets     = ARRAY_SIZE(ipr_offsets),
-
-        .ipr_data       = ipr_irq_table,
-        .nr_irqs        = ARRAY_SIZE(ipr_irq_table),
-
-        .chip = {
-                .name   = "IPR-sh7705",
-        },
-};
+void __init plat_irq_setup_pins(int mode)
+{
+        if (mode == IRQ_MODE_IRQ) {
+                register_intc_controller(&intc_desc_irq);
+                return;
+        }
+        BUG();
+}
 
 void __init plat_irq_setup(void)
 {
-        register_ipr_controller(&ipr_irq_desc);
+        register_intc_controller(&intc_desc);
 }