[115/120] MIPS: PS2: Define initial PlayStation 2 devices

Commit Message

Fredrik Noring Sept. 1, 2019, 4:35 p.m. UTC

Only the real-time clock (RTC), the input/output processor (IOP),
USB OHCI and the Graphics Synthesizer are supported at the moment.

Signed-off-by: Fredrik Noring <[e-mail]>
---
 arch/mips/ps2/Makefile  |  1 +
 arch/mips/ps2/devices.c | 98 +++++++++++++++++++++++++++++++++++++++++
 2 files changed, 99 insertions(+)
 create mode 100644 arch/mips/ps2/devices.c

Patch

diff --git a/arch/mips/ps2/Makefile b/arch/mips/ps2/Makefile
index 6f671112fbcb..925952a83625 100644
--- a/arch/mips/ps2/Makefile
+++ b/arch/mips/ps2/Makefile
@@ -1,3 +1,4 @@ 
+obj-y		+= devices.o
 obj-y		+= dmac-irq.o
 obj-y		+= identify.o
 obj-y		+= intc-irq.o
diff --git a/arch/mips/ps2/devices.c b/arch/mips/ps2/devices.c
new file mode 100644
index 000000000000..67aa1b158e29
--- /dev/null
+++ b/arch/mips/ps2/devices.c
@@ -0,0 +1,98 @@ 
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * PlayStation 2 devices
+ *
+ * Copyright (C) 2019 Fredrik Noring
+ */
+
+#include <linux/init.h>
+#include <linux/ioport.h>
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/platform_device.h>
+
+#include <asm/mach-ps2/gs.h>
+#include <asm/mach-ps2/iop.h>
+#include <asm/mach-ps2/irq.h>
+
+static struct resource iop_resources[] = {
+	[0] = {
+		.name	= "IOP RAM",
+		.start	= IOP_RAM_BASE,
+		.end	= IOP_RAM_BASE + IOP_RAM_SIZE - 1,
+		.flags	= IORESOURCE_MEM,	/* 2 MiB IOP RAM */
+	},
+};
+
+static struct platform_device iop_device = {
+	.name		= "iop",
+	.id		= -1,
+	.num_resources	= ARRAY_SIZE(iop_resources),
+	.resource	= iop_resources,
+};
+
+static struct resource ohci_resources[] = {	/* FIXME: Subresource to IOP */
+	[0] = {
+		.name	= "USB OHCI",
+		.start	= IOP_OHCI_BASE,
+		.end	= IOP_OHCI_BASE + 0xff,
+		.flags	= IORESOURCE_MEM, 	/* 256 byte HCCA. */
+	},
+	[1] = {
+		.start	= IRQ_IOP_USB,
+		.end	= IRQ_IOP_USB,
+		.flags	= IORESOURCE_IRQ,
+	},
+};
+
+static struct platform_device ohci_device = {
+	.name		= "ohci-ps2",
+	.id		= -1,
+	.num_resources	= ARRAY_SIZE(ohci_resources),
+	.resource	= ohci_resources,
+};
+
+static struct resource gs_resources[] = {
+	[0] = {
+		.name	= "Graphics Synthesizer",
+		.start	= GS_REG_BASE,
+		.end	= GS_REG_BASE + 0x1ffffff,
+		.flags	= IORESOURCE_MEM,	/* FIXME: IORESOURCE_REG? */
+	},
+	[1] = {
+		.start	= IRQ_DMAC_GIF,
+		.end	= IRQ_DMAC_GIF,
+		.flags	= IORESOURCE_IRQ,
+	},
+	[2] = {
+		.start	= IRQ_GS_SIGNAL,
+		.end	= IRQ_GS_EXVSYNC,
+		.flags	= IORESOURCE_IRQ,
+	},
+};
+
+static struct platform_device gs_device = {
+	.name           = "gs",
+	.id		= -1,
+	.num_resources	= ARRAY_SIZE(gs_resources),
+	.resource	= gs_resources,
+};
+
+static struct platform_device rtc_device = {
+	.name		= "rtc-ps2",
+	.id		= -1,
+};
+
+static struct platform_device *ps2_platform_devices[] __initdata = {
+	&iop_device,
+	&ohci_device,
+	&gs_device,
+	&rtc_device,
+};
+
+static int __init ps2_device_setup(void)
+{
+	return platform_add_devices(ps2_platform_devices,
+		ARRAY_SIZE(ps2_platform_devices));
+}
+device_initcall(ps2_device_setup);