diff options
Diffstat (limited to 'arch/arm/mach-integrator/core.c')
| -rw-r--r-- | arch/arm/mach-integrator/core.c | 127 |
1 files changed, 4 insertions, 123 deletions
diff --git a/arch/arm/mach-integrator/core.c b/arch/arm/mach-integrator/core.c index 8b390e36ba6..b02cfc06e0a 100644 --- a/arch/arm/mach-integrator/core.c +++ b/arch/arm/mach-integrator/core.c @@ -24,15 +24,13 @@ #include <asm/clkdev.h> #include <mach/clkdev.h> #include <mach/hardware.h> +#include <mach/platform.h> #include <asm/irq.h> -#include <asm/hardware/arm_timer.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 = { @@ -163,8 +161,8 @@ arch_initcall(integrator_init); * 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) +#define SC_CTRLC IO_ADDRESS(INTEGRATOR_SC_CTRLC) +#define SC_CTRLS IO_ADDRESS(INTEGRATOR_SC_CTRLS) static void integrator_uart_set_mctrl(struct amba_device *dev, void __iomem *base, unsigned int mctrl) { @@ -196,7 +194,7 @@ 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 +#define CM_CTRL IO_ADDRESS(INTEGRATOR_HDR_CTRL) static DEFINE_SPINLOCK(cm_lock); @@ -217,120 +215,3 @@ void cm_control(u32 mask, u32 set) } EXPORT_SYMBOL(cm_control); - -/* - * Where is the timer (VA)? - */ -#define TIMER0_VA_BASE (IO_ADDRESS(INTEGRATOR_CT_BASE)+0x00000000) -#define TIMER1_VA_BASE (IO_ADDRESS(INTEGRATOR_CT_BASE)+0x00000100) -#define TIMER2_VA_BASE (IO_ADDRESS(INTEGRATOR_CT_BASE)+0x00000200) -#define VA_IC_BASE IO_ADDRESS(INTEGRATOR_IC_BASE) - -/* - * How long is the timer interval? - */ -#define TIMER_INTERVAL (TICKS_PER_uSEC * mSEC_10) -#if TIMER_INTERVAL >= 0x100000 -#define TICKS2USECS(x) (256 * (x) / TICKS_PER_uSEC) -#elif TIMER_INTERVAL >= 0x10000 -#define TICKS2USECS(x) (16 * (x) / TICKS_PER_uSEC) -#else -#define TICKS2USECS(x) ((x) / TICKS_PER_uSEC) -#endif - -static unsigned long timer_reload; - -/* - * Returns number of ms since last clock interrupt. Note that interrupts - * will have been disabled by do_gettimeoffset() - */ -unsigned long integrator_gettimeoffset(void) -{ - unsigned long ticks1, ticks2, status; - - /* - * Get the current number of ticks. Note that there is a race - * condition between us reading the timer and checking for - * an interrupt. We get around this by ensuring that the - * counter has not reloaded between our two reads. - */ - ticks2 = readl(TIMER1_VA_BASE + TIMER_VALUE) & 0xffff; - do { - ticks1 = ticks2; - status = __raw_readl(VA_IC_BASE + IRQ_RAW_STATUS); - ticks2 = readl(TIMER1_VA_BASE + TIMER_VALUE) & 0xffff; - } while (ticks2 > ticks1); - - /* - * Number of ticks since last interrupt. - */ - ticks1 = timer_reload - ticks2; - - /* - * Interrupt pending? If so, we've reloaded once already. - */ - if (status & (1 << IRQ_TIMERINT1)) - ticks1 += timer_reload; - - /* - * Convert the ticks to usecs - */ - return TICKS2USECS(ticks1); -} - -/* - * IRQ handler for the timer - */ -static irqreturn_t -integrator_timer_interrupt(int irq, void *dev_id) -{ - /* - * clear the interrupt - */ - writel(1, TIMER1_VA_BASE + TIMER_INTCLR); - - timer_tick(); - - return IRQ_HANDLED; -} - -static struct irqaction integrator_timer_irq = { - .name = "Integrator Timer Tick", - .flags = IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL, - .handler = integrator_timer_interrupt, -}; - -/* - * Set up timer interrupt, and return the current time in seconds. - */ -void __init integrator_time_init(unsigned long reload, unsigned int ctrl) -{ - unsigned int timer_ctrl = TIMER_CTRL_ENABLE | TIMER_CTRL_PERIODIC; - - timer_reload = reload; - timer_ctrl |= ctrl; - - if (timer_reload > 0x100000) { - timer_reload >>= 8; - timer_ctrl |= TIMER_CTRL_DIV256; - } else if (timer_reload > 0x010000) { - timer_reload >>= 4; - timer_ctrl |= TIMER_CTRL_DIV16; - } - - /* - * Initialise to a known state (all timers off) - */ - writel(0, TIMER0_VA_BASE + TIMER_CTRL); - writel(0, TIMER1_VA_BASE + TIMER_CTRL); - writel(0, TIMER2_VA_BASE + TIMER_CTRL); - - writel(timer_reload, TIMER1_VA_BASE + TIMER_LOAD); - writel(timer_reload, TIMER1_VA_BASE + TIMER_VALUE); - writel(timer_ctrl, TIMER1_VA_BASE + TIMER_CTRL); - - /* - * Make irqs happen for the system timer - */ - setup_irq(IRQ_TIMERINT1, &integrator_timer_irq); -} |