Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / arch / sh / boards / mach-highlander / irq-r7785rp.c

diff --git a/kernel/arch/sh/boards/mach-highlander/irq-r7785rp.c b/kernel/arch/sh/boards/mach-highlander/irq-r7785rp.c
new file mode 100644 (file)
index 0000000..558b248
--- /dev/null
+++ b/kernel/arch/sh/boards/mach-highlander/irq-r7785rp.c
@@ -0,0 +1,86 @@
+/*
+ * Renesas Solutions Highlander R7785RP Support.
+ *
+ * Copyright (C) 2002  Atom Create Engineering Co., Ltd.
+ * Copyright (C) 2006 - 2008  Paul Mundt
+ * Copyright (C) 2007  Magnus Damm
+ *
+ * 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/init.h>
+#include <linux/irq.h>
+#include <linux/io.h>
+#include <mach/highlander.h>
+
+enum {
+       UNUSED = 0,
+
+       /* FPGA specific interrupt sources */
+       CF,             /* Compact Flash */
+       SMBUS,          /* SMBUS */
+       TP,             /* Touch panel */
+       RTC,            /* RTC Alarm */
+       TH_ALERT,       /* Temperature sensor */
+       AX88796,        /* Ethernet controller */
+
+       /* external bus connector */
+       EXT0, EXT1, EXT2, EXT3, EXT4, EXT5, EXT6, EXT7,
+};
+
+static struct intc_vect vectors[] __initdata = {
+       INTC_IRQ(CF, IRQ_CF),
+       INTC_IRQ(SMBUS, IRQ_SMBUS),
+       INTC_IRQ(TP, IRQ_TP),
+       INTC_IRQ(RTC, IRQ_RTC),
+       INTC_IRQ(TH_ALERT, IRQ_TH_ALERT),
+
+       INTC_IRQ(EXT0, IRQ_EXT0), INTC_IRQ(EXT1, IRQ_EXT1),
+       INTC_IRQ(EXT2, IRQ_EXT2), INTC_IRQ(EXT3, IRQ_EXT3),
+
+       INTC_IRQ(EXT4, IRQ_EXT4), INTC_IRQ(EXT5, IRQ_EXT5),
+       INTC_IRQ(EXT6, IRQ_EXT6), INTC_IRQ(EXT7, IRQ_EXT7),
+
+       INTC_IRQ(AX88796, IRQ_AX88796),
+};
+
+static struct intc_mask_reg mask_registers[] __initdata = {
+       { 0xa4000010, 0, 16, /* IRLMCR1 */
+         { 0, 0, 0, 0, CF, AX88796, SMBUS, TP,
+           RTC, 0, TH_ALERT, 0, 0, 0, 0, 0 } },
+       { 0xa4000012, 0, 16, /* IRLMCR2 */
+         { 0, 0, 0, 0, 0, 0, 0, 0,
+           EXT7, EXT6, EXT5, EXT4, EXT3, EXT2, EXT1, EXT0 } },
+};
+
+static unsigned char irl2irq[HL_NR_IRL] __initdata = {
+       0, IRQ_CF, IRQ_EXT4, IRQ_EXT5,
+       IRQ_EXT6, IRQ_EXT7, IRQ_SMBUS, IRQ_TP,
+       IRQ_RTC, IRQ_TH_ALERT, IRQ_AX88796, IRQ_EXT0,
+       IRQ_EXT1, IRQ_EXT2, IRQ_EXT3,
+};
+
+static DECLARE_INTC_DESC(intc_desc, "r7785rp", vectors,
+                        NULL, mask_registers, NULL, NULL);
+
+unsigned char * __init highlander_plat_irq_setup(void)
+{
+       if ((__raw_readw(0xa4000158) & 0xf000) != 0x1000)
+               return NULL;
+
+       printk(KERN_INFO "Using r7785rp interrupt controller.\n");
+
+       __raw_writew(0x0000, PA_IRLSSR1);       /* FPGA IRLSSR1(CF_CD clear) */
+
+       /* Setup the FPGA IRL */
+       __raw_writew(0x0000, PA_IRLPRA);        /* FPGA IRLA */
+       __raw_writew(0xe598, PA_IRLPRB);        /* FPGA IRLB */
+       __raw_writew(0x7060, PA_IRLPRC);        /* FPGA IRLC */
+       __raw_writew(0x0000, PA_IRLPRD);        /* FPGA IRLD */
+       __raw_writew(0x4321, PA_IRLPRE);        /* FPGA IRLE */
+       __raw_writew(0xdcba, PA_IRLPRF);        /* FPGA IRLF */
+
+       register_intc_controller(&intc_desc);
+       return irl2irq;
+}