diff options
Diffstat (limited to 'arch/arm/mach-w90x900')
| -rw-r--r-- | arch/arm/mach-w90x900/cpu.c | 11 | ||||
| -rw-r--r-- | arch/arm/mach-w90x900/include/mach/system.h | 15 | ||||
| -rw-r--r-- | arch/arm/mach-w90x900/time.c | 64 |
3 files changed, 62 insertions, 28 deletions
diff --git a/arch/arm/mach-w90x900/cpu.c b/arch/arm/mach-w90x900/cpu.c index 20dc0c96214d..e44b0a0ecf4c 100644 --- a/arch/arm/mach-w90x900/cpu.c +++ b/arch/arm/mach-w90x900/cpu.c @@ -45,6 +45,7 @@ static struct map_desc nuc900_iodesc[] __initdata = { IODESC_ENT(UART), IODESC_ENT(TIMER), IODESC_ENT(EBI), + IODESC_ENT(GPIO), }; /* Initial clock declarations. */ @@ -68,6 +69,11 @@ static DEFINE_CLK(gdma, 27); static DEFINE_CLK(adc, 28); static DEFINE_CLK(usi, 29); static DEFINE_CLK(ext, 0); +static DEFINE_CLK(timer0, 19); +static DEFINE_CLK(timer1, 20); +static DEFINE_CLK(timer2, 21); +static DEFINE_CLK(timer3, 22); +static DEFINE_CLK(timer4, 23); static struct clk_lookup nuc900_clkregs[] = { DEF_CLKLOOK(&clk_lcd, "nuc900-lcd", NULL), @@ -90,6 +96,11 @@ static struct clk_lookup nuc900_clkregs[] = { DEF_CLKLOOK(&clk_adc, "nuc900-adc", NULL), DEF_CLKLOOK(&clk_usi, "nuc900-spi", NULL), DEF_CLKLOOK(&clk_ext, NULL, "ext"), + DEF_CLKLOOK(&clk_timer0, NULL, "timer0"), + DEF_CLKLOOK(&clk_timer1, NULL, "timer1"), + DEF_CLKLOOK(&clk_timer2, NULL, "timer2"), + DEF_CLKLOOK(&clk_timer3, NULL, "timer3"), + DEF_CLKLOOK(&clk_timer4, NULL, "timer4"), }; /* Initial serial platform data */ diff --git a/arch/arm/mach-w90x900/include/mach/system.h b/arch/arm/mach-w90x900/include/mach/system.h index 940640066857..ce228bdc66dd 100644 --- a/arch/arm/mach-w90x900/include/mach/system.h +++ b/arch/arm/mach-w90x900/include/mach/system.h @@ -15,7 +15,15 @@ * */ +#include <linux/io.h> #include <asm/proc-fns.h> +#include <mach/map.h> +#include <mach/regs-timer.h> + +#define WTCR (TMR_BA + 0x1C) +#define WTCLK (1 << 10) +#define WTE (1 << 7) +#define WTRE (1 << 1) static void arch_idle(void) { @@ -23,6 +31,11 @@ static void arch_idle(void) static void arch_reset(char mode, const char *cmd) { - cpu_reset(0); + if (mode == 's') { + /* Jump into ROM at address 0 */ + cpu_reset(0); + } else { + __raw_writel(WTE | WTRE | WTCLK, WTCR); + } } diff --git a/arch/arm/mach-w90x900/time.c b/arch/arm/mach-w90x900/time.c index 4128af870b41..b80f769bc135 100644 --- a/arch/arm/mach-w90x900/time.c +++ b/arch/arm/mach-w90x900/time.c @@ -42,7 +42,10 @@ #define TICKS_PER_SEC 100 #define PRESCALE 0x63 /* Divider = prescale + 1 */ -unsigned int timer0_load; +#define TDR_SHIFT 24 +#define TDR_MASK ((1 << TDR_SHIFT) - 1) + +static unsigned int timer0_load; static void nuc900_clockevent_setmode(enum clock_event_mode mode, struct clock_event_device *clk) @@ -88,7 +91,7 @@ static int nuc900_clockevent_setnextevent(unsigned long evt, static struct clock_event_device nuc900_clockevent_device = { .name = "nuc900-timer0", .shift = 32, - .features = CLOCK_EVT_MODE_PERIODIC | CLOCK_EVT_FEAT_ONESHOT, + .features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT, .set_mode = nuc900_clockevent_setmode, .set_next_event = nuc900_clockevent_setnextevent, .rating = 300, @@ -112,8 +115,23 @@ static struct irqaction nuc900_timer0_irq = { .handler = nuc900_timer0_interrupt, }; -static void __init nuc900_clockevents_init(unsigned int rate) +static void __init nuc900_clockevents_init(void) { + unsigned int rate; + struct clk *clk = clk_get(NULL, "timer0"); + + BUG_ON(IS_ERR(clk)); + + __raw_writel(0x00, REG_TCSR0); + + clk_enable(clk); + rate = clk_get_rate(clk) / (PRESCALE + 1); + + timer0_load = (rate / TICKS_PER_SEC); + + __raw_writel(RESETINT, REG_TISR); + setup_irq(IRQ_TIMER0, &nuc900_timer0_irq); + nuc900_clockevent_device.mult = div_sc(rate, NSEC_PER_SEC, nuc900_clockevent_device.shift); nuc900_clockevent_device.max_delta_ns = clockevent_delta2ns(0xffffffff, @@ -127,26 +145,35 @@ static void __init nuc900_clockevents_init(unsigned int rate) static cycle_t nuc900_get_cycles(struct clocksource *cs) { - return ~__raw_readl(REG_TDR1); + return (~__raw_readl(REG_TDR1)) & TDR_MASK; } static struct clocksource clocksource_nuc900 = { .name = "nuc900-timer1", .rating = 200, .read = nuc900_get_cycles, - .mask = CLOCKSOURCE_MASK(32), - .shift = 20, + .mask = CLOCKSOURCE_MASK(TDR_SHIFT), + .shift = 10, .flags = CLOCK_SOURCE_IS_CONTINUOUS, }; -static void __init nuc900_clocksource_init(unsigned int rate) +static void __init nuc900_clocksource_init(void) { unsigned int val; + unsigned int rate; + struct clk *clk = clk_get(NULL, "timer1"); + + BUG_ON(IS_ERR(clk)); + + __raw_writel(0x00, REG_TCSR1); + + clk_enable(clk); + rate = clk_get_rate(clk) / (PRESCALE + 1); __raw_writel(0xffffffff, REG_TICR1); val = __raw_readl(REG_TCSR1); - val |= (COUNTEN | PERIOD); + val |= (COUNTEN | PERIOD | PRESCALE); __raw_writel(val, REG_TCSR1); clocksource_nuc900.mult = @@ -156,25 +183,8 @@ static void __init nuc900_clocksource_init(unsigned int rate) static void __init nuc900_timer_init(void) { - struct clk *ck_ext = clk_get(NULL, "ext"); - unsigned int rate; - - BUG_ON(IS_ERR(ck_ext)); - - rate = clk_get_rate(ck_ext); - clk_put(ck_ext); - rate = rate / (PRESCALE + 0x01); - - /* set a known state */ - __raw_writel(0x00, REG_TCSR0); - __raw_writel(0x00, REG_TCSR1); - __raw_writel(RESETINT, REG_TISR); - timer0_load = (rate / TICKS_PER_SEC); - - setup_irq(IRQ_TIMER0, &nuc900_timer0_irq); - - nuc900_clocksource_init(rate); - nuc900_clockevents_init(rate); + nuc900_clocksource_init(); + nuc900_clockevents_init(); } struct sys_timer nuc900_timer = { |