2 * linux/arch/arm/mach-integrator/core.c
4 * Copyright (C) 2000-2003 Deep Blue Solutions Ltd
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2, as
8 * published by the Free Software Foundation.
10 #include <linux/types.h>
11 #include <linux/kernel.h>
12 #include <linux/init.h>
13 #include <linux/device.h>
14 #include <linux/spinlock.h>
15 #include <linux/interrupt.h>
16 #include <linux/irq.h>
17 #include <linux/sched.h>
18 #include <linux/smp.h>
19 #include <linux/termios.h>
20 #include <linux/amba/bus.h>
21 #include <linux/amba/serial.h>
24 #include <asm/clkdev.h>
25 #include <mach/clkdev.h>
26 #include <mach/hardware.h>
27 #include <mach/platform.h>
30 #include <asm/system.h>
32 #include <asm/mach/time.h>
34 static struct amba_pl010_data integrator_uart_data;
36 static struct amba_device rtc_device = {
41 .start = INTEGRATOR_RTC_BASE,
42 .end = INTEGRATOR_RTC_BASE + SZ_4K - 1,
43 .flags = IORESOURCE_MEM,
45 .irq = { IRQ_RTCINT, NO_IRQ },
46 .periphid = 0x00041030,
49 static struct amba_device uart0_device = {
52 .platform_data = &integrator_uart_data,
55 .start = INTEGRATOR_UART0_BASE,
56 .end = INTEGRATOR_UART0_BASE + SZ_4K - 1,
57 .flags = IORESOURCE_MEM,
59 .irq = { IRQ_UARTINT0, NO_IRQ },
60 .periphid = 0x0041010,
63 static struct amba_device uart1_device = {
66 .platform_data = &integrator_uart_data,
69 .start = INTEGRATOR_UART1_BASE,
70 .end = INTEGRATOR_UART1_BASE + SZ_4K - 1,
71 .flags = IORESOURCE_MEM,
73 .irq = { IRQ_UARTINT1, NO_IRQ },
74 .periphid = 0x0041010,
77 static struct amba_device kmi0_device = {
83 .end = KMI0_BASE + SZ_4K - 1,
84 .flags = IORESOURCE_MEM,
86 .irq = { IRQ_KMIINT0, NO_IRQ },
87 .periphid = 0x00041050,
90 static struct amba_device kmi1_device = {
96 .end = KMI1_BASE + SZ_4K - 1,
97 .flags = IORESOURCE_MEM,
99 .irq = { IRQ_KMIINT1, NO_IRQ },
100 .periphid = 0x00041050,
103 static struct amba_device *amba_devs[] __initdata = {
112 * These are fixed clocks.
114 static struct clk clk24mhz = {
118 static struct clk uartclk = {
122 static struct clk_lookup lookups[] = {
135 }, { /* MMCI - IntegratorCP */
141 static int __init integrator_init(void)
145 clkdev_add_table(lookups, ARRAY_SIZE(lookups));
147 for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
148 struct amba_device *d = amba_devs[i];
149 amba_device_register(d, &iomem_resource);
155 arch_initcall(integrator_init);
158 * On the Integrator platform, the port RTS and DTR are provided by
159 * bits in the following SC_CTRLS register bits:
164 #define SC_CTRLC IO_ADDRESS(INTEGRATOR_SC_CTRLC)
165 #define SC_CTRLS IO_ADDRESS(INTEGRATOR_SC_CTRLS)
167 static void integrator_uart_set_mctrl(struct amba_device *dev, void __iomem *base, unsigned int mctrl)
169 unsigned int ctrls = 0, ctrlc = 0, rts_mask, dtr_mask;
171 if (dev == &uart0_device) {
179 if (mctrl & TIOCM_RTS)
184 if (mctrl & TIOCM_DTR)
189 __raw_writel(ctrls, SC_CTRLS);
190 __raw_writel(ctrlc, SC_CTRLC);
193 static struct amba_pl010_data integrator_uart_data = {
194 .set_mctrl = integrator_uart_set_mctrl,
197 #define CM_CTRL IO_ADDRESS(INTEGRATOR_HDR_CTRL)
199 static DEFINE_SPINLOCK(cm_lock);
202 * cm_control - update the CM_CTRL register.
203 * @mask: bits to change
206 void cm_control(u32 mask, u32 set)
211 spin_lock_irqsave(&cm_lock, flags);
212 val = readl(CM_CTRL) & ~mask;
213 writel(val | set, CM_CTRL);
214 spin_unlock_irqrestore(&cm_lock, flags);
217 EXPORT_SYMBOL(cm_control);