diff options
Diffstat (limited to 'arch/arm/mach-at91')
| -rw-r--r-- | arch/arm/mach-at91/Makefile | 4 | ||||
| -rw-r--r-- | arch/arm/mach-at91/at91rm9200_time.c | 20 | ||||
| -rw-r--r-- | arch/arm/mach-at91/at91sam926x_time.c | 11 | ||||
| -rw-r--r-- | arch/arm/mach-at91/board-sam9g20ek.c | 10 | ||||
| -rw-r--r-- | arch/arm/mach-at91/include/mach/at91_mci.h | 2 | ||||
| -rw-r--r-- | arch/arm/mach-at91/pm_slowclock.S | 16 |
6 files changed, 33 insertions, 30 deletions
diff --git a/arch/arm/mach-at91/Makefile b/arch/arm/mach-at91/Makefile index 027dd570dcc..d4004557532 100644 --- a/arch/arm/mach-at91/Makefile +++ b/arch/arm/mach-at91/Makefile @@ -16,8 +16,8 @@ obj-$(CONFIG_ARCH_AT91SAM9261) += at91sam9261.o at91sam926x_time.o at91sam9261_d obj-$(CONFIG_ARCH_AT91SAM9G10) += at91sam9261.o at91sam926x_time.o at91sam9261_devices.o sam9_smc.o obj-$(CONFIG_ARCH_AT91SAM9263) += at91sam9263.o at91sam926x_time.o at91sam9263_devices.o sam9_smc.o obj-$(CONFIG_ARCH_AT91SAM9RL) += at91sam9rl.o at91sam926x_time.o at91sam9rl_devices.o sam9_smc.o -obj-$(CONFIG_ARCH_AT91SAM9G20) += at91sam9260.o at91sam926x_time.o at91sam9260_devices.o sam9_smc.o - obj-$(CONFIG_ARCH_AT91SAM9G45) += at91sam9g45.o at91sam926x_time.o at91sam9g45_devices.o sam9_smc.o +obj-$(CONFIG_ARCH_AT91SAM9G20) += at91sam9260.o at91sam926x_time.o at91sam9260_devices.o sam9_smc.o +obj-$(CONFIG_ARCH_AT91SAM9G45) += at91sam9g45.o at91sam926x_time.o at91sam9g45_devices.o sam9_smc.o obj-$(CONFIG_ARCH_AT91CAP9) += at91cap9.o at91sam926x_time.o at91cap9_devices.o sam9_smc.o obj-$(CONFIG_ARCH_AT572D940HF) += at572d940hf.o at91sam926x_time.o at572d940hf_devices.o sam9_smc.o obj-$(CONFIG_ARCH_AT91X40) += at91x40.o at91x40_time.o diff --git a/arch/arm/mach-at91/at91rm9200_time.c b/arch/arm/mach-at91/at91rm9200_time.c index 309f3511aa2..2500f41d8d2 100644 --- a/arch/arm/mach-at91/at91rm9200_time.c +++ b/arch/arm/mach-at91/at91rm9200_time.c @@ -58,6 +58,12 @@ static irqreturn_t at91rm9200_timer_interrupt(int irq, void *dev_id) { u32 sr = at91_sys_read(AT91_ST_SR) & irqmask; + /* + * irqs should be disabled here, but as the irq is shared they are only + * guaranteed to be off if the timer irq is registered first. + */ + WARN_ON_ONCE(!irqs_disabled()); + /* simulate "oneshot" timer with alarm */ if (sr & AT91_ST_ALMS) { clkevt.event_handler(&clkevt); @@ -132,24 +138,11 @@ clkevt32k_mode(enum clock_event_mode mode, struct clock_event_device *dev) static int clkevt32k_next_event(unsigned long delta, struct clock_event_device *dev) { - unsigned long flags; u32 alm; int status = 0; BUG_ON(delta < 2); - /* Use "raw" primitives so we behave correctly on RT kernels. */ - raw_local_irq_save(flags); - - /* - * According to Thomas Gleixner irqs are already disabled here. Simply - * removing raw_local_irq_save above (and the matching - * raw_local_irq_restore) was not accepted. See - * http://thread.gmane.org/gmane.linux.ports.arm.kernel/41174 - * So for now (2008-11-20) just warn once if irqs were not disabled ... - */ - WARN_ON_ONCE(!raw_irqs_disabled_flags(flags)); - /* The alarm IRQ uses absolute time (now+delta), not the relative * time (delta) in our calling convention. Like all clockevents * using such "match" hardware, we have a race to defend against. @@ -169,7 +162,6 @@ clkevt32k_next_event(unsigned long delta, struct clock_event_device *dev) alm += delta; at91_sys_write(AT91_ST_RTAR, alm); - raw_local_irq_restore(flags); return status; } diff --git a/arch/arm/mach-at91/at91sam926x_time.c b/arch/arm/mach-at91/at91sam926x_time.c index 4bd56aee437..608a63240b6 100644 --- a/arch/arm/mach-at91/at91sam926x_time.c +++ b/arch/arm/mach-at91/at91sam926x_time.c @@ -62,16 +62,12 @@ static struct clocksource pit_clk = { static void pit_clkevt_mode(enum clock_event_mode mode, struct clock_event_device *dev) { - unsigned long flags; - switch (mode) { case CLOCK_EVT_MODE_PERIODIC: - /* update clocksource counter, then enable the IRQ */ - raw_local_irq_save(flags); + /* update clocksource counter */ pit_cnt += pit_cycle * PIT_PICNT(at91_sys_read(AT91_PIT_PIVR)); at91_sys_write(AT91_PIT_MR, (pit_cycle - 1) | AT91_PIT_PITEN | AT91_PIT_PITIEN); - raw_local_irq_restore(flags); break; case CLOCK_EVT_MODE_ONESHOT: BUG(); @@ -100,6 +96,11 @@ static struct clock_event_device pit_clkevt = { */ static irqreturn_t at91sam926x_pit_interrupt(int irq, void *dev_id) { + /* + * irqs should be disabled here, but as the irq is shared they are only + * guaranteed to be off if the timer irq is registered first. + */ + WARN_ON_ONCE(!irqs_disabled()); /* The PIT interrupt may be disabled, and is shared */ if ((pit_clkevt.mode == CLOCK_EVT_MODE_PERIODIC) diff --git a/arch/arm/mach-at91/board-sam9g20ek.c b/arch/arm/mach-at91/board-sam9g20ek.c index 29cf8317748..c11fd47aec5 100644 --- a/arch/arm/mach-at91/board-sam9g20ek.c +++ b/arch/arm/mach-at91/board-sam9g20ek.c @@ -271,10 +271,12 @@ static void __init ek_add_device_buttons(void) {} static struct i2c_board_info __initdata ek_i2c_devices[] = { - { - I2C_BOARD_INFO("24c512", 0x50), - I2C_BOARD_INFO("wm8731", 0x1b), - }, + { + I2C_BOARD_INFO("24c512", 0x50) + }, + { + I2C_BOARD_INFO("wm8731", 0x1b) + }, }; diff --git a/arch/arm/mach-at91/include/mach/at91_mci.h b/arch/arm/mach-at91/include/mach/at91_mci.h index 550d503a1bc..57f8ee15494 100644 --- a/arch/arm/mach-at91/include/mach/at91_mci.h +++ b/arch/arm/mach-at91/include/mach/at91_mci.h @@ -77,7 +77,7 @@ #define AT91_MCI_BLKR 0x18 /* Block Register */ #define AT91_MCI_BLKR_BCNT(n) ((0xffff & (n)) << 0) /* Block count */ -#define AT91_MCI_BLKR_BLKLEN(n) ((0xffff & (n)) << 16) /* Block lenght */ +#define AT91_MCI_BLKR_BLKLEN(n) ((0xffff & (n)) << 16) /* Block length */ #define AT91_MCI_RSPR(n) (0x20 + ((n) * 4)) /* Response Registers 0-3 */ #define AT91_MCR_RDR 0x30 /* Receive Data Register */ diff --git a/arch/arm/mach-at91/pm_slowclock.S b/arch/arm/mach-at91/pm_slowclock.S index 987fab3d846..9c5b48e68a7 100644 --- a/arch/arm/mach-at91/pm_slowclock.S +++ b/arch/arm/mach-at91/pm_slowclock.S @@ -175,8 +175,6 @@ ENTRY(at91_slow_clock) orr r3, r3, #(1 << 29) /* bit 29 always set */ str r3, [r1, #(AT91_CKGR_PLLAR - AT91_PMC)] - wait_pllalock - /* Save PLLB setting and disable it */ ldr r3, [r1, #(AT91_CKGR_PLLBR - AT91_PMC)] str r3, .saved_pllbr @@ -184,8 +182,6 @@ ENTRY(at91_slow_clock) mov r3, #AT91_PMC_PLLCOUNT str r3, [r1, #(AT91_CKGR_PLLBR - AT91_PMC)] - wait_pllblock - /* Turn off the main oscillator */ ldr r3, [r1, #(AT91_CKGR_MOR - AT91_PMC)] bic r3, r3, #AT91_PMC_MOSCEN @@ -205,13 +201,25 @@ ENTRY(at91_slow_clock) ldr r3, .saved_pllbr str r3, [r1, #(AT91_CKGR_PLLBR - AT91_PMC)] + tst r3, #(AT91_PMC_MUL & 0xff0000) + bne 1f + tst r3, #(AT91_PMC_MUL & ~0xff0000) + beq 2f +1: wait_pllblock +2: /* Restore PLLA setting */ ldr r3, .saved_pllar str r3, [r1, #(AT91_CKGR_PLLAR - AT91_PMC)] + tst r3, #(AT91_PMC_MUL & 0xff0000) + bne 3f + tst r3, #(AT91_PMC_MUL & ~0xff0000) + beq 4f +3: wait_pllalock +4: #ifdef SLOWDOWN_MASTER_CLOCK /* |