[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/arch/sh/cchips/Kconfig b/src/kernel/linux/v4.14/arch/sh/cchips/Kconfig
new file mode 100644
index 0000000..6be5dde
--- /dev/null
+++ b/src/kernel/linux/v4.14/arch/sh/cchips/Kconfig
@@ -0,0 +1,46 @@
+# SPDX-License-Identifier: GPL-2.0
+menu "Companion Chips"
+
+config HD6446X_SERIES
+ bool
+
+choice
+ prompt "HD6446x options"
+ depends on HD6446X_SERIES
+ default HD64461
+
+config HD64461
+ bool "Hitachi HD64461 companion chip support"
+ ---help---
+ The Hitachi HD64461 provides an interface for
+ the SH7709 CPU, supporting a LCD controller,
+ CRT color controller, IrDA up to 4 Mbps, and a
+ PCMCIA controller supporting 2 slots.
+
+ More information is available at
+ <http://semiconductor.hitachi.com/windowsce/superh/sld013.htm>.
+
+ Say Y if you want support for the HD64461.
+ Otherwise, say N.
+
+endchoice
+
+# These will also be split into the Kconfig's below
+config HD64461_IRQ
+ int "HD64461 IRQ"
+ depends on HD64461
+ default "36"
+ help
+ The default setting of the HD64461 IRQ is 36.
+
+ Do not change this unless you know what you are doing.
+
+config HD64461_ENABLER
+ bool "HD64461 PCMCIA enabler"
+ depends on HD64461
+ help
+ Say Y here if you want to enable PCMCIA support
+ via the HD64461 companion chip.
+ Otherwise, say N.
+
+endmenu
diff --git a/src/kernel/linux/v4.14/arch/sh/cchips/hd6446x/Makefile b/src/kernel/linux/v4.14/arch/sh/cchips/hd6446x/Makefile
new file mode 100644
index 0000000..59c3483
--- /dev/null
+++ b/src/kernel/linux/v4.14/arch/sh/cchips/hd6446x/Makefile
@@ -0,0 +1,3 @@
+obj-$(CONFIG_HD64461) += hd64461.o
+
+ccflags-y := -Werror
diff --git a/src/kernel/linux/v4.14/arch/sh/cchips/hd6446x/hd64461.c b/src/kernel/linux/v4.14/arch/sh/cchips/hd6446x/hd64461.c
new file mode 100644
index 0000000..f3fba96
--- /dev/null
+++ b/src/kernel/linux/v4.14/arch/sh/cchips/hd6446x/hd64461.c
@@ -0,0 +1,112 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2000 YAEGASHI Takeshi
+ * Hitachi HD64461 companion chip support
+ */
+
+#include <linux/sched.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/param.h>
+#include <linux/interrupt.h>
+#include <linux/init.h>
+#include <linux/irq.h>
+#include <linux/io.h>
+#include <asm/irq.h>
+#include <asm/hd64461.h>
+
+/* This belongs in cpu specific */
+#define INTC_ICR1 0xA4140010UL
+
+static void hd64461_mask_irq(struct irq_data *data)
+{
+ unsigned int irq = data->irq;
+ unsigned short nimr;
+ unsigned short mask = 1 << (irq - HD64461_IRQBASE);
+
+ nimr = __raw_readw(HD64461_NIMR);
+ nimr |= mask;
+ __raw_writew(nimr, HD64461_NIMR);
+}
+
+static void hd64461_unmask_irq(struct irq_data *data)
+{
+ unsigned int irq = data->irq;
+ unsigned short nimr;
+ unsigned short mask = 1 << (irq - HD64461_IRQBASE);
+
+ nimr = __raw_readw(HD64461_NIMR);
+ nimr &= ~mask;
+ __raw_writew(nimr, HD64461_NIMR);
+}
+
+static void hd64461_mask_and_ack_irq(struct irq_data *data)
+{
+ hd64461_mask_irq(data);
+
+#ifdef CONFIG_HD64461_ENABLER
+ if (data->irq == HD64461_IRQBASE + 13)
+ __raw_writeb(0x00, HD64461_PCC1CSCR);
+#endif
+}
+
+static struct irq_chip hd64461_irq_chip = {
+ .name = "HD64461-IRQ",
+ .irq_mask = hd64461_mask_irq,
+ .irq_mask_ack = hd64461_mask_and_ack_irq,
+ .irq_unmask = hd64461_unmask_irq,
+};
+
+static void hd64461_irq_demux(struct irq_desc *desc)
+{
+ unsigned short intv = __raw_readw(HD64461_NIRR);
+ unsigned int ext_irq = HD64461_IRQBASE;
+
+ intv &= (1 << HD64461_IRQ_NUM) - 1;
+
+ for (; intv; intv >>= 1, ext_irq++) {
+ if (!(intv & 1))
+ continue;
+
+ generic_handle_irq(ext_irq);
+ }
+}
+
+int __init setup_hd64461(void)
+{
+ int irq_base, i;
+
+ printk(KERN_INFO
+ "HD64461 configured at 0x%x on irq %d(mapped into %d to %d)\n",
+ HD64461_IOBASE, CONFIG_HD64461_IRQ, HD64461_IRQBASE,
+ HD64461_IRQBASE + 15);
+
+/* Should be at processor specific part.. */
+#if defined(CONFIG_CPU_SUBTYPE_SH7709)
+ __raw_writew(0x2240, INTC_ICR1);
+#endif
+ __raw_writew(0xffff, HD64461_NIMR);
+
+ irq_base = irq_alloc_descs(HD64461_IRQBASE, HD64461_IRQBASE, 16, -1);
+ if (IS_ERR_VALUE(irq_base)) {
+ pr_err("%s: failed hooking irqs for HD64461\n", __func__);
+ return irq_base;
+ }
+
+ for (i = 0; i < 16; i++)
+ irq_set_chip_and_handler(irq_base + i, &hd64461_irq_chip,
+ handle_level_irq);
+
+ irq_set_chained_handler(CONFIG_HD64461_IRQ, hd64461_irq_demux);
+ irq_set_irq_type(CONFIG_HD64461_IRQ, IRQ_TYPE_LEVEL_LOW);
+
+#ifdef CONFIG_HD64461_ENABLER
+ printk(KERN_INFO "HD64461: enabling PCMCIA devices\n");
+ __raw_writeb(0x4c, HD64461_PCC1CSCIER);
+ __raw_writeb(0x00, HD64461_PCC1CSCR);
+#endif
+
+ return 0;
+}
+
+module_init(setup_hd64461);