ARM: Realview/Versatile: separate out common SP804 timer code
[safe/jmp/linux-2.6] / arch / arm / mach-versatile / core.c
index 69214fc..b68ddd3 100644 (file)
 #include <linux/interrupt.h>
 #include <linux/amba/bus.h>
 #include <linux/amba/clcd.h>
-#include <linux/clocksource.h>
-#include <linux/clockchips.h>
+#include <linux/amba/pl061.h>
+#include <linux/amba/mmci.h>
 #include <linux/cnt32_to_63.h>
 #include <linux/io.h>
 
 #include <asm/clkdev.h>
 #include <asm/system.h>
-#include <mach/hardware.h>
 #include <asm/irq.h>
 #include <asm/leds.h>
 #include <asm/hardware/arm_timer.h>
-#include <asm/hardware/icst307.h>
+#include <asm/hardware/icst.h>
 #include <asm/hardware/vic.h>
 #include <asm/mach-types.h>
 
 #include <asm/mach/irq.h>
 #include <asm/mach/time.h>
 #include <asm/mach/map.h>
-#include <asm/mach/mmc.h>
+#include <mach/clkdev.h>
+#include <mach/hardware.h>
+#include <mach/platform.h>
+#include <plat/timer-sp.h>
 
 #include "core.h"
-#include "clock.h"
 
 /*
  * All IO addresses are mapped onto VA 0xFFFx.xxxx, where x.xxxx
@@ -57,7 +58,6 @@
  *
  * Setup a VA for the Versatile Vectored Interrupt Controller.
  */
-#define __io_address(n)                __io(IO_ADDRESS(n))
 #define VA_VIC_BASE            __io_address(VERSATILE_VIC_BASE)
 #define VA_SIC_BASE            __io_address(VERSATILE_SIC_BASE)
 
@@ -342,8 +342,7 @@ static struct platform_device versatile_i2c_device = {
 
 static struct i2c_board_info versatile_i2c_board_info[] = {
        {
-               I2C_BOARD_INFO("rtc-ds1307", 0xd0 >> 1),
-               .type = "ds1338",
+               I2C_BOARD_INFO("ds1338", 0xd0 >> 1),
        },
 };
 
@@ -369,24 +368,29 @@ unsigned int mmc_status(struct device *dev)
        return readl(VERSATILE_SYSMCI) & mask;
 }
 
-static struct mmc_platform_data mmc0_plat_data = {
+static struct mmci_platform_data mmc0_plat_data = {
        .ocr_mask       = MMC_VDD_32_33|MMC_VDD_33_34,
        .status         = mmc_status,
+       .gpio_wp        = -1,
+       .gpio_cd        = -1,
 };
 
 /*
  * Clock handling
  */
-static const struct icst307_params versatile_oscvco_params = {
-       .ref            = 24000,
-       .vco_max        = 200000,
+static const struct icst_params versatile_oscvco_params = {
+       .ref            = 24000000,
+       .vco_max        = ICST307_VCO_MAX,
+       .vco_min        = ICST307_VCO_MIN,
        .vd_min         = 4 + 8,
        .vd_max         = 511 + 8,
        .rd_min         = 1 + 2,
        .rd_max         = 127 + 2,
+       .s2div          = icst307_s2div,
+       .idx2s          = icst307_idx2s,
 };
 
-static void versatile_oscvco_set(struct clk *clk, struct icst307_vco vco)
+static void versatile_oscvco_set(struct clk *clk, struct icst_vco vco)
 {
        void __iomem *sys = __io_address(VERSATILE_SYS_BASE);
        void __iomem *sys_lock = sys + VERSATILE_SYS_LOCK_OFFSET;
@@ -706,6 +710,16 @@ static struct clcd_board clcd_plat_data = {
        .remove         = versatile_clcd_remove,
 };
 
+static struct pl061_platform_data gpio0_plat_data = {
+       .gpio_base      = 0,
+       .irq_base       = IRQ_GPIO0_START,
+};
+
+static struct pl061_platform_data gpio1_plat_data = {
+       .gpio_base      = 8,
+       .irq_base       = IRQ_GPIO1_START,
+};
+
 #define AACI_IRQ       { IRQ_AACI, NO_IRQ }
 #define AACI_DMA       { 0x80, 0x81 }
 #define MMCI0_IRQ      { IRQ_MMCI0A,IRQ_SIC_MMCI0B }
@@ -768,8 +782,8 @@ AMBA_DEVICE(clcd,  "dev:20",  CLCD,     &clcd_plat_data);
 AMBA_DEVICE(dmac,  "dev:30",  DMAC,     NULL);
 AMBA_DEVICE(sctl,  "dev:e0",  SCTL,     NULL);
 AMBA_DEVICE(wdog,  "dev:e1",  WATCHDOG, NULL);
-AMBA_DEVICE(gpio0, "dev:e4",  GPIO0,    NULL);
-AMBA_DEVICE(gpio1, "dev:e5",  GPIO1,    NULL);
+AMBA_DEVICE(gpio0, "dev:e4",  GPIO0,    &gpio0_plat_data);
+AMBA_DEVICE(gpio1, "dev:e5",  GPIO1,    &gpio1_plat_data);
 AMBA_DEVICE(rtc,   "dev:e8",  RTC,      NULL);
 AMBA_DEVICE(sci0,  "dev:f0",  SCI,      NULL);
 AMBA_DEVICE(uart0, "dev:f1",  UART0,    NULL);
@@ -839,8 +853,7 @@ void __init versatile_init(void)
 {
        int i;
 
-       for (i = 0; i < ARRAY_SIZE(lookups); i++)
-               clkdev_add(&lookups[i]);
+       clkdev_add_table(lookups, ARRAY_SIZE(lookups));
 
        platform_device_register(&versatile_flash_device);
        platform_device_register(&versatile_i2c_device);
@@ -863,120 +876,6 @@ void __init versatile_init(void)
 #define TIMER1_VA_BASE         (__io_address(VERSATILE_TIMER0_1_BASE) + 0x20)
 #define TIMER2_VA_BASE          __io_address(VERSATILE_TIMER2_3_BASE)
 #define TIMER3_VA_BASE         (__io_address(VERSATILE_TIMER2_3_BASE) + 0x20)
-#define VA_IC_BASE              __io_address(VERSATILE_VIC_BASE) 
-
-/*
- * How long is the timer interval?
- */
-#define TIMER_INTERVAL (TICKS_PER_uSEC * mSEC_10)
-#if TIMER_INTERVAL >= 0x100000
-#define TIMER_RELOAD   (TIMER_INTERVAL >> 8)
-#define TIMER_DIVISOR  (TIMER_CTRL_DIV256)
-#define TICKS2USECS(x) (256 * (x) / TICKS_PER_uSEC)
-#elif TIMER_INTERVAL >= 0x10000
-#define TIMER_RELOAD   (TIMER_INTERVAL >> 4)           /* Divide by 16 */
-#define TIMER_DIVISOR  (TIMER_CTRL_DIV16)
-#define TICKS2USECS(x) (16 * (x) / TICKS_PER_uSEC)
-#else
-#define TIMER_RELOAD   (TIMER_INTERVAL)
-#define TIMER_DIVISOR  (TIMER_CTRL_DIV1)
-#define TICKS2USECS(x) ((x) / TICKS_PER_uSEC)
-#endif
-
-static void timer_set_mode(enum clock_event_mode mode,
-                          struct clock_event_device *clk)
-{
-       unsigned long ctrl;
-
-       switch(mode) {
-       case CLOCK_EVT_MODE_PERIODIC:
-               writel(TIMER_RELOAD, TIMER0_VA_BASE + TIMER_LOAD);
-
-               ctrl = TIMER_CTRL_PERIODIC;
-               ctrl |= TIMER_CTRL_32BIT | TIMER_CTRL_IE | TIMER_CTRL_ENABLE;
-               break;
-       case CLOCK_EVT_MODE_ONESHOT:
-               /* period set, and timer enabled in 'next_event' hook */
-               ctrl = TIMER_CTRL_ONESHOT;
-               ctrl |= TIMER_CTRL_32BIT | TIMER_CTRL_IE;
-               break;
-       case CLOCK_EVT_MODE_UNUSED:
-       case CLOCK_EVT_MODE_SHUTDOWN:
-       default:
-               ctrl = 0;
-       }
-
-       writel(ctrl, TIMER0_VA_BASE + TIMER_CTRL);
-}
-
-static int timer_set_next_event(unsigned long evt,
-                               struct clock_event_device *unused)
-{
-       unsigned long ctrl = readl(TIMER0_VA_BASE + TIMER_CTRL);
-
-       writel(evt, TIMER0_VA_BASE + TIMER_LOAD);
-       writel(ctrl | TIMER_CTRL_ENABLE, TIMER0_VA_BASE + TIMER_CTRL);
-
-       return 0;
-}
-
-static struct clock_event_device timer0_clockevent =    {
-       .name           = "timer0",
-       .shift          = 32,
-       .features       = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT,
-       .set_mode       = timer_set_mode,
-       .set_next_event = timer_set_next_event,
-};
-
-/*
- * IRQ handler for the timer
- */
-static irqreturn_t versatile_timer_interrupt(int irq, void *dev_id)
-{
-       struct clock_event_device *evt = &timer0_clockevent;
-
-       writel(1, TIMER0_VA_BASE + TIMER_INTCLR);
-
-       evt->event_handler(evt);
-
-       return IRQ_HANDLED;
-}
-
-static struct irqaction versatile_timer_irq = {
-       .name           = "Versatile Timer Tick",
-       .flags          = IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL,
-       .handler        = versatile_timer_interrupt,
-};
-
-static cycle_t versatile_get_cycles(struct clocksource *cs)
-{
-       return ~readl(TIMER3_VA_BASE + TIMER_VALUE);
-}
-
-static struct clocksource clocksource_versatile = {
-       .name           = "timer3",
-       .rating         = 200,
-       .read           = versatile_get_cycles,
-       .mask           = CLOCKSOURCE_MASK(32),
-       .shift          = 20,
-       .flags          = CLOCK_SOURCE_IS_CONTINUOUS,
-};
-
-static int __init versatile_clocksource_init(void)
-{
-       /* setup timer3 as free-running clocksource */
-       writel(0, TIMER3_VA_BASE + TIMER_CTRL);
-       writel(0xffffffff, TIMER3_VA_BASE + TIMER_LOAD);
-       writel(0xffffffff, TIMER3_VA_BASE + TIMER_VALUE);
-       writel(TIMER_CTRL_32BIT | TIMER_CTRL_ENABLE | TIMER_CTRL_PERIODIC,
-              TIMER3_VA_BASE + TIMER_CTRL);
-
-       clocksource_versatile.mult =
-               clocksource_khz2mult(1000, clocksource_versatile.shift);
-       clocksource_register(&clocksource_versatile);
-
-       return 0;
-}
 
 /*
  * Set up timer interrupt, and return the current time in seconds.
@@ -1005,22 +904,8 @@ static void __init versatile_timer_init(void)
        writel(0, TIMER2_VA_BASE + TIMER_CTRL);
        writel(0, TIMER3_VA_BASE + TIMER_CTRL);
 
-       /* 
-        * Make irqs happen for the system timer
-        */
-       setup_irq(IRQ_TIMERINT0_1, &versatile_timer_irq);
-
-       versatile_clocksource_init();
-
-       timer0_clockevent.mult =
-               div_sc(1000000, NSEC_PER_SEC, timer0_clockevent.shift);
-       timer0_clockevent.max_delta_ns =
-               clockevent_delta2ns(0xffffffff, &timer0_clockevent);
-       timer0_clockevent.min_delta_ns =
-               clockevent_delta2ns(0xf, &timer0_clockevent);
-
-       timer0_clockevent.cpumask = cpumask_of(0);
-       clockevents_register_device(&timer0_clockevent);
+       sp804_clocksource_init(TIMER3_VA_BASE);
+       sp804_clockevents_init(TIMER0_VA_BASE, IRQ_TIMERINT0_1);
 }
 
 struct sys_timer versatile_timer = {