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Diffstat (limited to 'arch/arm/mach-w90x900/w90p910.c')
-rw-r--r--arch/arm/mach-w90x900/w90p910.c134
1 files changed, 134 insertions, 0 deletions
diff --git a/arch/arm/mach-w90x900/w90p910.c b/arch/arm/mach-w90x900/w90p910.c
new file mode 100644
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+++ b/arch/arm/mach-w90x900/w90p910.c
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+/*
+ * linux/arch/arm/mach-w90x900/w90p910.c
+ *
+ * Based on linux/arch/arm/plat-s3c24xx/s3c244x.c by Ben Dooks
+ *
+ * Copyright (c) 2008 Nuvoton technology corporation
+ * All rights reserved.
+ *
+ * Wan ZongShun <mcuos.com@gmail.com>
+ *
+ * W90P910 cpu support
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/interrupt.h>
+#include <linux/list.h>
+#include <linux/timer.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/io.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/mach/irq.h>
+#include <asm/irq.h>
+
+#include <mach/hardware.h>
+#include <mach/regs-serial.h>
+
+#include "cpu.h"
+
+/*W90P910 has five uarts*/
+
+#define MAX_UART_COUNT 5
+static int uart_count;
+static struct platform_device *uart_devs[MAX_UART_COUNT-1];
+
+/* Initial IO mappings */
+
+static struct map_desc w90p910_iodesc[] __initdata = {
+ IODESC_ENT(IRQ),
+ IODESC_ENT(GCR),
+ IODESC_ENT(UART),
+ IODESC_ENT(TIMER),
+ IODESC_ENT(EBI),
+ /*IODESC_ENT(LCD),*/
+};
+
+/*Init the dev resource*/
+
+static W90X900_RES(UART0);
+static W90X900_RES(UART1);
+static W90X900_RES(UART2);
+static W90X900_RES(UART3);
+static W90X900_RES(UART4);
+static W90X900_DEVICE(uart0, UART0, 0, "w90x900-uart");
+static W90X900_DEVICE(uart1, UART1, 1, "w90x900-uart");
+static W90X900_DEVICE(uart2, UART2, 2, "w90x900-uart");
+static W90X900_DEVICE(uart3, UART3, 3, "w90x900-uart");
+static W90X900_DEVICE(uart4, UART4, 4, "w90x900-uart");
+
+static struct platform_device *uart_devices[] __initdata = {
+ &w90x900_uart0,
+ &w90x900_uart1,
+ &w90x900_uart2,
+ &w90x900_uart3,
+ &w90x900_uart4
+};
+
+/*Init W90P910 uart device*/
+
+void __init w90p910_init_uarts(struct w90x900_uartcfg *cfg, int no)
+{
+ struct platform_device *platdev;
+ int uart, uartdev;
+
+ /*By min() to judge count of uart be used indeed*/
+
+ uartdev = ARRAY_SIZE(uart_devices);
+ no = min(uartdev, no);
+
+ for (uart = 0; uart < no; uart++, cfg++) {
+ if (cfg->hwport != uart)
+ printk(KERN_ERR "w90x900_uartcfg[%d] error\n", uart);
+ platdev = uart_devices[cfg->hwport];
+ uart_devs[uart] = platdev;
+ platdev->dev.platform_data = cfg;
+ }
+ uart_count = uart;
+}
+
+/*Init W90P910 evb io*/
+
+void __init w90p910_map_io(struct map_desc *mach_desc, int mach_size)
+{
+ unsigned long idcode = 0x0;
+
+ iotable_init(w90p910_iodesc, ARRAY_SIZE(w90p910_iodesc));
+
+ idcode = __raw_readl(W90X900PDID);
+ if (idcode != W90P910_CPUID)
+ printk(KERN_ERR "CPU type 0x%08lx is not W90P910\n", idcode);
+}
+
+/*Init W90P910 clock*/
+
+void __init w90p910_init_clocks(int xtal)
+{
+}
+
+static int __init w90p910_init_cpu(void)
+{
+ return 0;
+}
+
+static int __init w90x900_arch_init(void)
+{
+ int ret;
+
+ ret = w90p910_init_cpu();
+ if (ret != 0)
+ return ret;
+
+ return platform_add_devices(uart_devs, uart_count);
+
+}
+arch_initcall(w90x900_arch_init);