#include <linux/device.h>
#include <linux/spinlock.h>
#include <linux/interrupt.h>
+#include <linux/irq.h>
#include <linux/sched.h>
#include <linux/smp.h>
-
-#include <asm/hardware.h>
+#include <linux/termios.h>
+#include <linux/amba/bus.h>
+#include <linux/amba/serial.h>
+#include <linux/io.h>
+
+#include <asm/clkdev.h>
+#include <mach/clkdev.h>
+#include <mach/hardware.h>
+#include <mach/platform.h>
#include <asm/irq.h>
-#include <asm/io.h>
-#include <asm/hardware/amba.h>
#include <asm/hardware/arm_timer.h>
-#include <asm/arch/cm.h>
+#include <mach/cm.h>
#include <asm/system.h>
#include <asm/leds.h>
#include <asm/mach/time.h>
#include "common.h"
+static struct amba_pl010_data integrator_uart_data;
+
static struct amba_device rtc_device = {
.dev = {
- .bus_id = "mb:15",
+ .init_name = "mb:15",
},
.res = {
.start = INTEGRATOR_RTC_BASE,
static struct amba_device uart0_device = {
.dev = {
- .bus_id = "mb:16",
+ .init_name = "mb:16",
+ .platform_data = &integrator_uart_data,
},
.res = {
.start = INTEGRATOR_UART0_BASE,
static struct amba_device uart1_device = {
.dev = {
- .bus_id = "mb:17",
+ .init_name = "mb:17",
+ .platform_data = &integrator_uart_data,
},
.res = {
.start = INTEGRATOR_UART1_BASE,
static struct amba_device kmi0_device = {
.dev = {
- .bus_id = "mb:18",
+ .init_name = "mb:18",
},
.res = {
.start = KMI0_BASE,
static struct amba_device kmi1_device = {
.dev = {
- .bus_id = "mb:19",
+ .init_name = "mb:19",
},
.res = {
.start = KMI1_BASE,
&kmi1_device,
};
+/*
+ * These are fixed clocks.
+ */
+static struct clk clk24mhz = {
+ .rate = 24000000,
+};
+
+static struct clk uartclk = {
+ .rate = 14745600,
+};
+
+static struct clk_lookup lookups[] = {
+ { /* UART0 */
+ .dev_id = "mb:16",
+ .clk = &uartclk,
+ }, { /* UART1 */
+ .dev_id = "mb:17",
+ .clk = &uartclk,
+ }, { /* KMI0 */
+ .dev_id = "mb:18",
+ .clk = &clk24mhz,
+ }, { /* KMI1 */
+ .dev_id = "mb:19",
+ .clk = &clk24mhz,
+ }, { /* MMCI - IntegratorCP */
+ .dev_id = "mb:1c",
+ .clk = &uartclk,
+ }
+};
+
static int __init integrator_init(void)
{
int i;
+ clkdev_add_table(lookups, ARRAY_SIZE(lookups));
+
for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
struct amba_device *d = amba_devs[i];
amba_device_register(d, &iomem_resource);
arch_initcall(integrator_init);
+/*
+ * On the Integrator platform, the port RTS and DTR are provided by
+ * bits in the following SC_CTRLS register bits:
+ * RTS DTR
+ * UART0 7 6
+ * UART1 5 4
+ */
+#define SC_CTRLC (IO_ADDRESS(INTEGRATOR_SC_BASE) + INTEGRATOR_SC_CTRLC_OFFSET)
+#define SC_CTRLS (IO_ADDRESS(INTEGRATOR_SC_BASE) + INTEGRATOR_SC_CTRLS_OFFSET)
+
+static void integrator_uart_set_mctrl(struct amba_device *dev, void __iomem *base, unsigned int mctrl)
+{
+ unsigned int ctrls = 0, ctrlc = 0, rts_mask, dtr_mask;
+
+ if (dev == &uart0_device) {
+ rts_mask = 1 << 4;
+ dtr_mask = 1 << 5;
+ } else {
+ rts_mask = 1 << 6;
+ dtr_mask = 1 << 7;
+ }
+
+ if (mctrl & TIOCM_RTS)
+ ctrlc |= rts_mask;
+ else
+ ctrls |= rts_mask;
+
+ if (mctrl & TIOCM_DTR)
+ ctrlc |= dtr_mask;
+ else
+ ctrls |= dtr_mask;
+
+ __raw_writel(ctrls, SC_CTRLS);
+ __raw_writel(ctrlc, SC_CTRLC);
+}
+
+static struct amba_pl010_data integrator_uart_data = {
+ .set_mctrl = integrator_uart_set_mctrl,
+};
+
#define CM_CTRL IO_ADDRESS(INTEGRATOR_HDR_BASE) + INTEGRATOR_HDR_CTRL_OFFSET
static DEFINE_SPINLOCK(cm_lock);
* IRQ handler for the timer
*/
static irqreturn_t
-integrator_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+integrator_timer_interrupt(int irq, void *dev_id)
{
- write_seqlock(&xtime_lock);
-
/*
* clear the interrupt
*/
writel(1, TIMER1_VA_BASE + TIMER_INTCLR);
- /*
- * the clock tick routines are only processed on the
- * primary CPU
- */
- if (hard_smp_processor_id() == 0) {
- nmi_tick();
- timer_tick(regs);
-#ifdef CONFIG_SMP
- smp_send_timer();
-#endif
- }
-
-#ifdef CONFIG_SMP
- /*
- * this is the ARM equivalent of the APIC timer interrupt
- */
- update_process_times(user_mode(regs));
-#endif /* CONFIG_SMP */
-
- write_sequnlock(&xtime_lock);
+ timer_tick();
return IRQ_HANDLED;
}
static struct irqaction integrator_timer_irq = {
.name = "Integrator Timer Tick",
- .flags = SA_INTERRUPT | SA_TIMER,
+ .flags = IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL,
.handler = integrator_timer_interrupt,
};