--- /dev/null
+/*
+ * arch/arm/mach-netx/generic.c
+ *
+ * Copyright (C) 2005 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <linux/device.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <asm/hardware.h>
+#include <asm/mach/map.h>
+#include <asm/hardware/vic.h>
+#include <asm/io.h>
+#include <asm/arch/netx-regs.h>
+#include <asm/mach/irq.h>
+
+static struct map_desc netx_io_desc[] __initdata = {
+ {
+ .virtual = NETX_IO_VIRT,
+ .pfn = __phys_to_pfn(NETX_IO_PHYS),
+ .length = NETX_IO_SIZE,
+ .type = MT_DEVICE
+ }
+};
+
+void __init netx_map_io(void)
+{
+ iotable_init(netx_io_desc, ARRAY_SIZE(netx_io_desc));
+}
+
+static struct resource netx_rtc_resources[] = {
+ [0] = {
+ .start = 0x00101200,
+ .end = 0x00101220,
+ .flags = IORESOURCE_MEM,
+ },
+};
+
+static struct platform_device netx_rtc_device = {
+ .name = "netx-rtc",
+ .id = 0,
+ .num_resources = ARRAY_SIZE(netx_rtc_resources),
+ .resource = netx_rtc_resources,
+};
+
+static struct platform_device *devices[] __initdata = {
+ &netx_rtc_device,
+};
+
+#if 0
+#define DEBUG_IRQ(fmt...) printk(fmt)
+#else
+#define DEBUG_IRQ(fmt...) while (0) {}
+#endif
+
+static void
+netx_hif_demux_handler(unsigned int irq_unused, struct irqdesc *desc,
+ struct pt_regs *regs)
+{
+ unsigned int irq = NETX_IRQ_HIF_CHAINED(0);
+ unsigned int stat;
+
+ stat = ((readl(NETX_DPMAS_INT_EN) &
+ readl(NETX_DPMAS_INT_STAT)) >> 24) & 0x1f;
+
+ desc = irq_desc + NETX_IRQ_HIF_CHAINED(0);
+
+ while (stat) {
+ if (stat & 1) {
+ DEBUG_IRQ("handling irq %d\n", irq);
+ desc_handle_irq(irq, desc, regs);
+ }
+ irq++;
+ desc++;
+ stat >>= 1;
+ }
+}
+
+static int
+netx_hif_irq_type(unsigned int _irq, unsigned int type)
+{
+ unsigned int val, irq;
+
+ val = readl(NETX_DPMAS_IF_CONF1);
+
+ irq = _irq - NETX_IRQ_HIF_CHAINED(0);
+
+ if (type & __IRQT_RISEDGE) {
+ DEBUG_IRQ("rising edges\n");
+ val |= (1 << 26) << irq;
+ }
+ if (type & __IRQT_FALEDGE) {
+ DEBUG_IRQ("falling edges\n");
+ val &= ~((1 << 26) << irq);
+ }
+ if (type & __IRQT_LOWLVL) {
+ DEBUG_IRQ("low level\n");
+ val &= ~((1 << 26) << irq);
+ }
+ if (type & __IRQT_HIGHLVL) {
+ DEBUG_IRQ("high level\n");
+ val |= (1 << 26) << irq;
+ }
+
+ writel(val, NETX_DPMAS_IF_CONF1);
+
+ return 0;
+}
+
+static void
+netx_hif_ack_irq(unsigned int _irq)
+{
+ unsigned int val, irq;
+
+ irq = _irq - NETX_IRQ_HIF_CHAINED(0);
+ writel((1 << 24) << irq, NETX_DPMAS_INT_STAT);
+
+ val = readl(NETX_DPMAS_INT_EN);
+ val &= ~((1 << 24) << irq);
+ writel(val, NETX_DPMAS_INT_EN);
+
+ DEBUG_IRQ("%s: irq %d\n", __FUNCTION__, _irq);
+}
+
+static void
+netx_hif_mask_irq(unsigned int _irq)
+{
+ unsigned int val, irq;
+
+ irq = _irq - NETX_IRQ_HIF_CHAINED(0);
+ val = readl(NETX_DPMAS_INT_EN);
+ val &= ~((1 << 24) << irq);
+ writel(val, NETX_DPMAS_INT_EN);
+ DEBUG_IRQ("%s: irq %d\n", __FUNCTION__, _irq);
+}
+
+static void
+netx_hif_unmask_irq(unsigned int _irq)
+{
+ unsigned int val, irq;
+
+ irq = _irq - NETX_IRQ_HIF_CHAINED(0);
+ val = readl(NETX_DPMAS_INT_EN);
+ val |= (1 << 24) << irq;
+ writel(val, NETX_DPMAS_INT_EN);
+ DEBUG_IRQ("%s: irq %d\n", __FUNCTION__, _irq);
+}
+
+static struct irqchip netx_hif_chip = {
+ .ack = netx_hif_ack_irq,
+ .mask = netx_hif_mask_irq,
+ .unmask = netx_hif_unmask_irq,
+ .set_type = netx_hif_irq_type,
+};
+
+void __init netx_init_irq(void)
+{
+ int irq;
+
+ vic_init(__io(io_p2v(NETX_PA_VIC)), 0, ~0);
+
+ for (irq = NETX_IRQ_HIF_CHAINED(0); irq <= NETX_IRQ_HIF_LAST; irq++) {
+ set_irq_chip(irq, &netx_hif_chip);
+ set_irq_handler(irq, do_level_IRQ);
+ set_irq_flags(irq, IRQF_VALID);
+ }
+
+ writel(NETX_DPMAS_INT_EN_GLB_EN, NETX_DPMAS_INT_EN);
+ set_irq_chained_handler(NETX_IRQ_HIF, netx_hif_demux_handler);
+}
+
+static int __init netx_init(void)
+{
+ return platform_add_devices(devices, ARRAY_SIZE(devices));
+}
+
+subsys_initcall(netx_init);
+
git://git.onelab.eu / linux-2.6.git / blobdiff