summaryrefslogtreecommitdiffstats
path: root/kernel/arch/sh/boards/mach-highlander/irq-r7785rp.c
diff options
context:
space:
mode:
Diffstat (limited to 'kernel/arch/sh/boards/mach-highlander/irq-r7785rp.c')
-rw-r--r--kernel/arch/sh/boards/mach-highlander/irq-r7785rp.c86
1 files changed, 86 insertions, 0 deletions
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
index 000000000..558b24862
--- /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;
+}