sh: Add SH7720 CPU support.

This adds support for the SH7720 (SH3-DSP) CPU.

Signed-off by: Markus Brunner <super.firetwister@gmail.com>
Signed-off by: Mark Jonas <toertel@gmail.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

3 files changed, 215 insertions, 0 deletions

diff --git a/arch/sh/kernel/cpu/sh3/Makefile b/arch/sh/kernel/cpu/sh3/Makefile
index cd2a35270e3..646eb693361 100644
--- a/arch/sh/kernel/cpu/sh3/Makefile
+++ b/arch/sh/kernel/cpu/sh3/Makefile
@@ -12,6 +12,7 @@ obj-$(CONFIG_CPU_SUBTYPE_SH7708)	+= setup-sh770x.o
 obj-$(CONFIG_CPU_SUBTYPE_SH7709)	+= setup-sh770x.o
 obj-$(CONFIG_CPU_SUBTYPE_SH7710)	+= setup-sh7710.o
 obj-$(CONFIG_CPU_SUBTYPE_SH7712)	+= setup-sh7710.o
+obj-$(CONFIG_CPU_SUBTYPE_SH7720)	+= setup-sh7720.o
 
 # Primary on-chip clocks (common)
 clock-$(CONFIG_CPU_SH3)			:= clock-sh3.o
@@ -19,5 +20,6 @@ clock-$(CONFIG_CPU_SUBTYPE_SH7705)	:= clock-sh7705.o
 clock-$(CONFIG_CPU_SUBTYPE_SH7706)	:= clock-sh7706.o
 clock-$(CONFIG_CPU_SUBTYPE_SH7709)	:= clock-sh7709.o
 clock-$(CONFIG_CPU_SUBTYPE_SH7710)	:= clock-sh7710.o
+clock-$(CONFIG_CPU_SUBTYPE_SH7720)	:= clock-sh7710.o
 
 obj-y	+= $(clock-y)
diff --git a/arch/sh/kernel/cpu/sh3/probe.c b/arch/sh/kernel/cpu/sh3/probe.c
index 647623b22ed..1a66cf636a9 100644
--- a/arch/sh/kernel/cpu/sh3/probe.c
+++ b/arch/sh/kernel/cpu/sh3/probe.c
@@ -81,6 +81,9 @@ int __init detect_cpu_and_cache_system(void)
 #if defined(CONFIG_CPU_SUBTYPE_SH7712)
 		current_cpu_data.type = CPU_SH7712;
 #endif
+#if defined(CONFIG_CPU_SUBTYPE_SH7720)
+		current_cpu_data.type = CPU_SH7720;
+#endif
 #if defined(CONFIG_CPU_SUBTYPE_SH7705)
 		current_cpu_data.type = CPU_SH7705;
 
diff --git a/arch/sh/kernel/cpu/sh3/setup-sh7720.c b/arch/sh/kernel/cpu/sh3/setup-sh7720.c
new file mode 100644
index 00000000000..a0929b8a95a
--- /dev/null
+++ b/arch/sh/kernel/cpu/sh3/setup-sh7720.c
@@ -0,0 +1,210 @@
+/*
+ * SH7720 Setup
+ *
+ *  Copyright (C) 2007  Markus Brunner, Mark Jonas
+ *
+ *  Based on arch/sh/kernel/cpu/sh4/setup-sh7750.c:
+ *
+ *  Copyright (C) 2006  Paul Mundt
+ *  Copyright (C) 2006  Jamie Lenehan
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+#include <linux/platform_device.h>
+#include <linux/init.h>
+#include <linux/serial.h>
+#include <linux/io.h>
+#include <asm/sci.h>
+#include <asm/rtc.h>
+
+#define INTC_ICR1	0xA4140010UL
+#define INTC_ICR_IRLM   0x4000
+#define INTC_ICR_IRQ	(~INTC_ICR_IRLM)
+
+static struct resource rtc_resources[] = {
+	[0] = {
+		.start	= 0xa413fec0,
+		.end	= 0xa413fec0 + 0x28 - 1,
+		.flags	= IORESOURCE_IO,
+	},
+	[1] = {
+		/* Period IRQ */
+		.start	= 21,
+		.flags	= IORESOURCE_IRQ,
+	},
+	[2] = {
+		/* Carry IRQ */
+		.start	= 22,
+		.flags	= IORESOURCE_IRQ,
+	},
+	[3] = {
+		/* Alarm IRQ */
+		.start	= 20,
+		.flags	= IORESOURCE_IRQ,
+	},
+};
+
+static struct sh_rtc_platform_info rtc_info = {
+	.capabilities	= RTC_CAP_4_DIGIT_YEAR,
+};
+
+static struct platform_device rtc_device = {
+	.name		= "sh-rtc",
+	.id		= -1,
+	.num_resources	= ARRAY_SIZE(rtc_resources),
+	.resource	= rtc_resources,
+	.dev		= {
+		.platform_data = &rtc_info,
+	},
+};
+
+static struct plat_sci_port sci_platform_data[] = {
+	{
+		.mapbase	= 0xa4430000,
+		.flags		= UPF_BOOT_AUTOCONF,
+		.type		= PORT_SCIF,
+		.irqs		= { 80, 80, 80, 80 },
+	}, {
+		.mapbase	= 0xa4438000,
+		.flags		= UPF_BOOT_AUTOCONF,
+		.type		= PORT_SCIF,
+		.irqs           = { 81, 81, 81, 81 },
+	}, {
+
+		.flags = 0,
+	}
+};
+
+static struct platform_device sci_device = {
+	.name		= "sh-sci",
+	.id		= -1,
+	.dev		= {
+		.platform_data	= sci_platform_data,
+	},
+};
+
+static struct platform_device *sh7720_devices[] __initdata = {
+	&rtc_device,
+	&sci_device,
+};
+
+static int __init sh7720_devices_setup(void)
+{
+	return platform_add_devices(sh7720_devices,
+				    ARRAY_SIZE(sh7720_devices));
+}
+__initcall(sh7720_devices_setup);
+
+enum {
+	UNUSED = 0,
+
+	/* interrupt sources */
+	TMU0, TMU1, TMU2, RTC_ATI, RTC_PRI, RTC_CUI,
+	WDT, REF_RCMI, SIM_ERI, SIM_RXI, SIM_TXI, SIM_TEND,
+	IRQ0, IRQ1, IRQ2, IRQ3,
+	USBF_SPD, TMU_SUNI, IRQ5, IRQ4,
+	DMAC1_DEI0, DMAC1_DEI1, DMAC1_DEI2, DMAC1_DEI3, LCDC, SSL,
+	ADC, DMAC2_DEI4, DMAC2_DEI5, USBFI0, USBFI1, CMT,
+	SCIF0, SCIF1,
+	PINT07, PINT815, TPU0, TPU1, TPU2, TPU3, IIC,
+	SIOF0, SIOF1, MMCI0, MMCI1, MMCI2, MMCI3, PCC,
+	USBHI, AFEIF,
+	H_UDI,
+	/* interrupt groups */
+	TMU, RTC, SIM, DMAC1, USBFI, DMAC2, USB, TPU, MMC,
+};
+
+static struct intc_vect vectors[] __initdata = {
+	INTC_VECT(TMU0, 0x400),       INTC_VECT(TMU1, 0x420),
+	INTC_VECT(TMU2, 0x440),       INTC_VECT(RTC_ATI, 0x480),
+	INTC_VECT(RTC_PRI, 0x4a0),    INTC_VECT(RTC_CUI, 0x4c0),
+	INTC_VECT(SIM_ERI, 0x4e0),    INTC_VECT(SIM_RXI, 0x500),
+	INTC_VECT(SIM_TXI, 0x520),    INTC_VECT(SIM_TEND, 0x540),
+	INTC_VECT(WDT, 0x560),        INTC_VECT(REF_RCMI, 0x580),
+	/* H_UDI cannot be masked */  INTC_VECT(TMU_SUNI, 0x6c0),
+	INTC_VECT(USBF_SPD, 0x6e0),   INTC_VECT(DMAC1_DEI0, 0x800),
+	INTC_VECT(DMAC1_DEI1, 0x820), INTC_VECT(DMAC1_DEI2, 0x840),
+	INTC_VECT(DMAC1_DEI3, 0x860), INTC_VECT(LCDC, 0x900),
+	INTC_VECT(SSL, 0x980),        INTC_VECT(USBFI0, 0xa20),
+	INTC_VECT(USBFI1, 0xa40),     INTC_VECT(USBHI, 0xa60),
+	INTC_VECT(DMAC2_DEI4, 0xb80), INTC_VECT(DMAC2_DEI5, 0xba0),
+	INTC_VECT(ADC, 0xbe0),        INTC_VECT(SCIF0, 0xc00),
+	INTC_VECT(SCIF1, 0xc20),      INTC_VECT(PINT07, 0xc80),
+	INTC_VECT(PINT815, 0xca0),    INTC_VECT(SIOF0, 0xd00),
+	INTC_VECT(SIOF1, 0xd20),      INTC_VECT(TPU0, 0xd80),
+	INTC_VECT(TPU1, 0xda0),       INTC_VECT(TPU2, 0xdc0),
+	INTC_VECT(TPU3, 0xde0),       INTC_VECT(IIC, 0xe00),
+	INTC_VECT(MMCI0, 0xe80),      INTC_VECT(MMCI1, 0xea0),
+	INTC_VECT(MMCI2, 0xec0),      INTC_VECT(MMCI3, 0xee0),
+	INTC_VECT(CMT, 0xf00),        INTC_VECT(PCC, 0xf60),
+	INTC_VECT(AFEIF, 0xfe0),
+};
+
+static struct intc_group groups[] __initdata = {
+	INTC_GROUP(TMU, TMU0, TMU1, TMU2),
+	INTC_GROUP(RTC, RTC_ATI, RTC_PRI, RTC_CUI),
+	INTC_GROUP(SIM, SIM_ERI, SIM_RXI, SIM_TXI, SIM_TEND),
+	INTC_GROUP(DMAC1, DMAC1_DEI0, DMAC1_DEI1, DMAC1_DEI2, DMAC1_DEI3),
+	INTC_GROUP(USBFI, USBFI0, USBFI1),
+	INTC_GROUP(DMAC2, DMAC2_DEI4, DMAC2_DEI5),
+	INTC_GROUP(TPU, TPU0, TPU1, TPU2, TPU3),
+	INTC_GROUP(MMC, MMCI0, MMCI1, MMCI2, MMCI3),
+};
+
+static struct intc_prio priorities[] __initdata = {
+	INTC_PRIO(SCIF0, 2),
+	INTC_PRIO(SCIF1, 2),
+	INTC_PRIO(DMAC1, 1),
+	INTC_PRIO(DMAC2, 1),
+	INTC_PRIO(RTC, 2),
+	INTC_PRIO(TMU, 2),
+	INTC_PRIO(TPU, 2),
+};
+
+static struct intc_prio_reg prio_registers[] __initdata = {
+	{ 0xA414FEE2UL, 0, 16, 4, /* IPRA */ { TMU0, TMU1, TMU2, RTC } },
+	{ 0xA414FEE4UL, 0, 16, 4, /* IPRB */ { WDT, REF_RCMI, SIM, 0 } },
+	{ 0xA4140016UL, 0, 16, 4, /* IPRC */ { IRQ3, IRQ2, IRQ1, IRQ0 } },
+	{ 0xA4140018UL, 0, 16, 4, /* IPRD */ { USBF_SPD, TMU_SUNI, IRQ5, IRQ4 } },
+	{ 0xA414001AUL, 0, 16, 4, /* IPRE */ { DMAC1, 0, LCDC, SSL } },
+	{ 0xA4080000UL, 0, 16, 4, /* IPRF */ { ADC, DMAC2, USBFI, CMT } },
+	{ 0xA4080002UL, 0, 16, 4, /* IPRG */ { SCIF0, SCIF1, 0, 0 } },
+	{ 0xA4080004UL, 0, 16, 4, /* IPRH */ { PINT07, PINT815, TPU, IIC } },
+	{ 0xA4080006UL, 0, 16, 4, /* IPRI */ { SIOF0, SIOF1, MMC, PCC } },
+	{ 0xA4080008UL, 0, 16, 4, /* IPRJ */ { 0, USBHI, 0, AFEIF } },
+};
+
+static DECLARE_INTC_DESC(intc_desc, "sh7720", vectors, groups,
+		priorities, NULL, prio_registers, NULL);
+
+static struct intc_sense_reg sense_registers[] __initdata = {
+	{ INTC_ICR1, 16, 2, { 0, 0, IRQ5, IRQ4, IRQ3, IRQ2, IRQ1, IRQ0 } },
+};
+
+static struct intc_vect vectors_irq[] __initdata = {
+	INTC_VECT(IRQ0, 0x600), INTC_VECT(IRQ1, 0x620),
+	INTC_VECT(IRQ2, 0x640), INTC_VECT(IRQ3, 0x660),
+	INTC_VECT(IRQ4, 0x680), INTC_VECT(IRQ5, 0x6a0),
+};
+
+static DECLARE_INTC_DESC(intc_irq_desc, "sh7720-irq", vectors_irq,
+		NULL, priorities, NULL, prio_registers, sense_registers);
+
+void __init plat_irq_setup_pins(int mode)
+{
+	switch (mode) {
+	case IRQ_MODE_IRQ:
+		ctrl_outw(ctrl_inw(INTC_ICR1) & INTC_ICR_IRQ, INTC_ICR1);
+		register_intc_controller(&intc_irq_desc);
+		break;
+	default:
+		BUG();
+	}
+}
+
+void __init plat_irq_setup(void)
+{
+	register_intc_controller(&intc_desc);
+}