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authorLinus Torvalds <torvalds@linux-foundation.org>2008-04-22 02:44:57 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2008-04-22 02:44:57 +0400
commitc3823c479e1f86a0adc7bb76fcfded67b042afc3 (patch)
tree0f75e8ac7c126b81f09cf6453184ff20216d7c29 /arch
parent5dfeaef89559d4968b0470adf749659f10d722f6 (diff)
parented3fa7c9510cde67d232299cab8052ff50a08285 (diff)
downloadlinux-c3823c479e1f86a0adc7bb76fcfded67b042afc3.tar.xz
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hskinnemoen/avr32-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hskinnemoen/avr32-2.6: (25 commits) avr32: Add hardware power-down function call avr32: add include/asm-avr32/serial.h avr32: don't offer PARPORT_PC avr32: don't offer CONFIG_GEN_RTC avr32: don't offer CONFIG_RTC add include/asm-avr32/xor.h avr32: Remove two unused #defines from mm/init.c avr32: Implement set_rate(), set_parent() and mode() for pll1 avr32: Generic clockevents support avr32: Move sleep code into mach-at32ap avr32: Use constants from sysreg.h in asm.h avr32: Delete mostly unused header asm/intc.h avr32: start clocksource cleanup avr32: pass i2c board info through at32_add_device_twi avr32: cleanup - use _AC macro to define PAGE_SIZE Generate raw keyboard codes for AVR32 architecture atmel_usba_udc: Add support for AT91CAP9 UDPHS atmel_usba_udc: Add missing kfree() in usba_udc_remove() atmel_usba_udc: move endpoint declarations into platform data. atmel_usba_udc: Kill GPIO_PIN_NONE ...
Diffstat (limited to 'arch')
-rw-r--r--arch/avr32/Kconfig5
-rw-r--r--arch/avr32/kernel/entry-avr32b.S20
-rw-r--r--arch/avr32/kernel/process.c6
-rw-r--r--arch/avr32/kernel/time.c248
-rw-r--r--arch/avr32/mach-at32ap/Makefile3
-rw-r--r--arch/avr32/mach-at32ap/at32ap700x.c243
-rw-r--r--arch/avr32/mach-at32ap/intc.c1
-rw-r--r--arch/avr32/mach-at32ap/pm-at32ap700x.S66
-rw-r--r--arch/avr32/mach-at32ap/time-tc.c218
-rw-r--r--arch/avr32/mm/init.c3
-rw-r--r--arch/avr32/oprofile/op_model_avr32.c1
11 files changed, 385 insertions, 429 deletions
diff --git a/arch/avr32/Kconfig b/arch/avr32/Kconfig
index 28e0caf4156c..09ad7995080c 100644
--- a/arch/avr32/Kconfig
+++ b/arch/avr32/Kconfig
@@ -47,6 +47,9 @@ config RWSEM_GENERIC_SPINLOCK
config GENERIC_TIME
def_bool y
+config GENERIC_CLOCKEVENTS
+ def_bool y
+
config RWSEM_XCHGADD_ALGORITHM
def_bool n
@@ -70,6 +73,8 @@ source "init/Kconfig"
menu "System Type and features"
+source "kernel/time/Kconfig"
+
config SUBARCH_AVR32B
bool
config MMU
diff --git a/arch/avr32/kernel/entry-avr32b.S b/arch/avr32/kernel/entry-avr32b.S
index 8cf16d7a7040..5f31702d6b1c 100644
--- a/arch/avr32/kernel/entry-avr32b.S
+++ b/arch/avr32/kernel/entry-avr32b.S
@@ -741,26 +741,6 @@ irq_level\level:
.section .irq.text,"ax",@progbits
-.global cpu_idle_sleep
-cpu_idle_sleep:
- mask_interrupts
- get_thread_info r8
- ld.w r9, r8[TI_flags]
- bld r9, TIF_NEED_RESCHED
- brcs cpu_idle_enable_int_and_exit
- sbr r9, TIF_CPU_GOING_TO_SLEEP
- st.w r8[TI_flags], r9
- unmask_interrupts
- sleep 0
-cpu_idle_skip_sleep:
- mask_interrupts
- ld.w r9, r8[TI_flags]
- cbr r9, TIF_CPU_GOING_TO_SLEEP
- st.w r8[TI_flags], r9
-cpu_idle_enable_int_and_exit:
- unmask_interrupts
- retal r12
-
.global irq_level0
.global irq_level1
.global irq_level2
diff --git a/arch/avr32/kernel/process.c b/arch/avr32/kernel/process.c
index 7f4af0b1e111..6cf9df176274 100644
--- a/arch/avr32/kernel/process.c
+++ b/arch/avr32/kernel/process.c
@@ -18,11 +18,11 @@
#include <asm/sysreg.h>
#include <asm/ocd.h>
+#include <asm/arch/pm.h>
+
void (*pm_power_off)(void) = NULL;
EXPORT_SYMBOL(pm_power_off);
-extern void cpu_idle_sleep(void);
-
/*
* This file handles the architecture-dependent parts of process handling..
*/
@@ -54,6 +54,8 @@ void machine_halt(void)
void machine_power_off(void)
{
+ if (pm_power_off)
+ pm_power_off();
}
void machine_restart(char *cmd)
diff --git a/arch/avr32/kernel/time.c b/arch/avr32/kernel/time.c
index 36a46c3ae308..00a9862380ff 100644
--- a/arch/avr32/kernel/time.c
+++ b/arch/avr32/kernel/time.c
@@ -1,16 +1,12 @@
/*
* Copyright (C) 2004-2007 Atmel Corporation
*
- * Based on MIPS implementation arch/mips/kernel/time.c
- * Copyright 2001 MontaVista Software Inc.
- *
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
-
#include <linux/clk.h>
-#include <linux/clocksource.h>
+#include <linux/clockchips.h>
#include <linux/time.h>
#include <linux/module.h>
#include <linux/interrupt.h>
@@ -27,207 +23,133 @@
#include <asm/io.h>
#include <asm/sections.h>
-/* how many counter cycles in a jiffy? */
-static u32 cycles_per_jiffy;
+#include <asm/arch/pm.h>
-/* the count value for the next timer interrupt */
-static u32 expirelo;
-cycle_t __weak read_cycle_count(void)
+static cycle_t read_cycle_count(void)
{
return (cycle_t)sysreg_read(COUNT);
}
-struct clocksource __weak clocksource_avr32 = {
- .name = "avr32",
- .rating = 350,
+/*
+ * The architectural cycle count registers are a fine clocksource unless
+ * the system idle loop use sleep states like "idle": the CPU cycles
+ * measured by COUNT (and COMPARE) don't happen during sleep states.
+ * Their duration also changes if cpufreq changes the CPU clock rate.
+ * So we rate the clocksource using COUNT as very low quality.
+ */
+static struct clocksource counter = {
+ .name = "avr32_counter",
+ .rating = 50,
.read = read_cycle_count,
.mask = CLOCKSOURCE_MASK(32),
.shift = 16,
.flags = CLOCK_SOURCE_IS_CONTINUOUS,
};
-irqreturn_t __weak timer_interrupt(int irq, void *dev_id);
-
-struct irqaction timer_irqaction = {
- .handler = timer_interrupt,
- .flags = IRQF_DISABLED,
- .name = "timer",
-};
-
-/*
- * By default we provide the null RTC ops
- */
-static unsigned long null_rtc_get_time(void)
+static irqreturn_t timer_interrupt(int irq, void *dev_id)
{
- return mktime(2007, 1, 1, 0, 0, 0);
-}
-
-static int null_rtc_set_time(unsigned long sec)
-{
- return 0;
-}
+ struct clock_event_device *evdev = dev_id;
-static unsigned long (*rtc_get_time)(void) = null_rtc_get_time;
-static int (*rtc_set_time)(unsigned long) = null_rtc_set_time;
-
-static void avr32_timer_ack(void)
-{
- u32 count;
-
- /* Ack this timer interrupt and set the next one */
- expirelo += cycles_per_jiffy;
- /* setting COMPARE to 0 stops the COUNT-COMPARE */
- if (expirelo == 0) {
- sysreg_write(COMPARE, expirelo + 1);
- } else {
- sysreg_write(COMPARE, expirelo);
- }
+ /*
+ * Disable the interrupt until the clockevent subsystem
+ * reprograms it.
+ */
+ sysreg_write(COMPARE, 0);
- /* Check to see if we have missed any timer interrupts */
- count = sysreg_read(COUNT);
- if ((count - expirelo) < 0x7fffffff) {
- expirelo = count + cycles_per_jiffy;
- sysreg_write(COMPARE, expirelo);
- }
+ evdev->event_handler(evdev);
+ return IRQ_HANDLED;
}
-int __weak avr32_hpt_init(void)
-{
- int ret;
- unsigned long mult, shift, count_hz;
-
- count_hz = clk_get_rate(boot_cpu_data.clk);
- shift = clocksource_avr32.shift;
- mult = clocksource_hz2mult(count_hz, shift);
- clocksource_avr32.mult = mult;
-
- {
- u64 tmp;
-
- tmp = TICK_NSEC;
- tmp <<= shift;
- tmp += mult / 2;
- do_div(tmp, mult);
-
- cycles_per_jiffy = tmp;
- }
+static struct irqaction timer_irqaction = {
+ .handler = timer_interrupt,
+ .flags = IRQF_TIMER | IRQF_DISABLED,
+ .name = "avr32_comparator",
+};
- ret = setup_irq(0, &timer_irqaction);
- if (ret) {
- pr_debug("timer: could not request IRQ 0: %d\n", ret);
- return -ENODEV;
- }
+static int comparator_next_event(unsigned long delta,
+ struct clock_event_device *evdev)
+{
+ unsigned long flags;
- printk(KERN_INFO "timer: AT32AP COUNT-COMPARE at irq 0, "
- "%lu.%03lu MHz\n",
- ((count_hz + 500) / 1000) / 1000,
- ((count_hz + 500) / 1000) % 1000);
+ raw_local_irq_save(flags);
- return 0;
-}
+ /* The time to read COUNT then update COMPARE must be less
+ * than the min_delta_ns value for this clockevent source.
+ */
+ sysreg_write(COMPARE, (sysreg_read(COUNT) + delta) ? : 1);
-/*
- * Taken from MIPS c0_hpt_timer_init().
- *
- * The reason COUNT is written twice is probably to make sure we don't get any
- * timer interrupts while we are messing with the counter.
- */
-int __weak avr32_hpt_start(void)
-{
- u32 count = sysreg_read(COUNT);
- expirelo = (count / cycles_per_jiffy + 1) * cycles_per_jiffy;
- sysreg_write(COUNT, expirelo - cycles_per_jiffy);
- sysreg_write(COMPARE, expirelo);
- sysreg_write(COUNT, count);
+ raw_local_irq_restore(flags);
return 0;
}
-/*
- * local_timer_interrupt() does profiling and process accounting on a
- * per-CPU basis.
- *
- * In UP mode, it is invoked from the (global) timer_interrupt.
- */
-void local_timer_interrupt(int irq, void *dev_id)
+static void comparator_mode(enum clock_event_mode mode,
+ struct clock_event_device *evdev)
{
- if (current->pid)
- profile_tick(CPU_PROFILING);
- update_process_times(user_mode(get_irq_regs()));
+ switch (mode) {
+ case CLOCK_EVT_MODE_ONESHOT:
+ pr_debug("%s: start\n", evdev->name);
+ /* FALLTHROUGH */
+ case CLOCK_EVT_MODE_RESUME:
+ cpu_disable_idle_sleep();
+ break;
+ case CLOCK_EVT_MODE_UNUSED:
+ case CLOCK_EVT_MODE_SHUTDOWN:
+ sysreg_write(COMPARE, 0);
+ pr_debug("%s: stop\n", evdev->name);
+ cpu_enable_idle_sleep();
+ break;
+ default:
+ BUG();
+ }
}
-irqreturn_t __weak timer_interrupt(int irq, void *dev_id)
-{
- /* ack timer interrupt and try to set next interrupt */
- avr32_timer_ack();
-
- /*
- * Call the generic timer interrupt handler
- */
- write_seqlock(&xtime_lock);
- do_timer(1);
- write_sequnlock(&xtime_lock);
-
- /*
- * In UP mode, we call local_timer_interrupt() to do profiling
- * and process accounting.
- *
- * SMP is not supported yet.
- */
- local_timer_interrupt(irq, dev_id);
-
- return IRQ_HANDLED;
-}
+static struct clock_event_device comparator = {
+ .name = "avr32_comparator",
+ .features = CLOCK_EVT_FEAT_ONESHOT,
+ .shift = 16,
+ .rating = 50,
+ .cpumask = CPU_MASK_CPU0,
+ .set_next_event = comparator_next_event,
+ .set_mode = comparator_mode,
+};
void __init time_init(void)
{
+ unsigned long counter_hz;
int ret;
- /*
- * Make sure we don't get any COMPARE interrupts before we can
- * handle them.
- */
- sysreg_write(COMPARE, 0);
-
- xtime.tv_sec = rtc_get_time();
+ xtime.tv_sec = mktime(2007, 1, 1, 0, 0, 0);
xtime.tv_nsec = 0;
set_normalized_timespec(&wall_to_monotonic,
-xtime.tv_sec, -xtime.tv_nsec);
- ret = avr32_hpt_init();
- if (ret) {
- pr_debug("timer: failed setup: %d\n", ret);
- return;
- }
+ /* figure rate for counter */
+ counter_hz = clk_get_rate(boot_cpu_data.clk);
+ counter.mult = clocksource_hz2mult(counter_hz, counter.shift);
- ret = clocksource_register(&clocksource_avr32);
+ ret = clocksource_register(&counter);
if (ret)
pr_debug("timer: could not register clocksource: %d\n", ret);
- ret = avr32_hpt_start();
- if (ret) {
- pr_debug("timer: failed starting: %d\n", ret);
- return;
- }
-}
+ /* setup COMPARE clockevent */
+ comparator.mult = div_sc(counter_hz, NSEC_PER_SEC, comparator.shift);
+ comparator.max_delta_ns = clockevent_delta2ns((u32)~0, &comparator);
+ comparator.min_delta_ns = clockevent_delta2ns(50, &comparator) + 1;
-static struct sysdev_class timer_class = {
- .name = "timer",
-};
+ sysreg_write(COMPARE, 0);
+ timer_irqaction.dev_id = &comparator;
-static struct sys_device timer_device = {
- .id = 0,
- .cls = &timer_class,
-};
+ ret = setup_irq(0, &timer_irqaction);
+ if (ret)
+ pr_debug("timer: could not request IRQ 0: %d\n", ret);
+ else {
+ clockevents_register_device(&comparator);
-static int __init init_timer_sysfs(void)
-{
- int err = sysdev_class_register(&timer_class);
- if (!err)
- err = sysdev_register(&timer_device);
- return err;
+ pr_info("%s: irq 0, %lu.%03lu MHz\n", comparator.name,
+ ((counter_hz + 500) / 1000) / 1000,
+ ((counter_hz + 500) / 1000) % 1000);
+ }
}
-
-device_initcall(init_timer_sysfs);
diff --git a/arch/avr32/mach-at32ap/Makefile b/arch/avr32/mach-at32ap/Makefile
index 5e9f8217befc..e89009439e4a 100644
--- a/arch/avr32/mach-at32ap/Makefile
+++ b/arch/avr32/mach-at32ap/Makefile
@@ -1,4 +1,3 @@
obj-y += at32ap.o clock.o intc.o extint.o pio.o hsmc.o
-obj-$(CONFIG_CPU_AT32AP700X) += at32ap700x.o
-obj-$(CONFIG_CPU_AT32AP700X) += time-tc.o
+obj-$(CONFIG_CPU_AT32AP700X) += at32ap700x.o pm-at32ap700x.o
obj-$(CONFIG_CPU_FREQ_AT32AP) += cpufreq.o
diff --git a/arch/avr32/mach-at32ap/at32ap700x.c b/arch/avr32/mach-at32ap/at32ap700x.c
index 7678fee9a885..0f24b4f85c17 100644
--- a/arch/avr32/mach-at32ap/at32ap700x.c
+++ b/arch/avr32/mach-at32ap/at32ap700x.c
@@ -6,11 +6,13 @@
* published by the Free Software Foundation.
*/
#include <linux/clk.h>
+#include <linux/delay.h>
#include <linux/fb.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/dma-mapping.h>
#include <linux/spi/spi.h>
+#include <linux/usb/atmel_usba_udc.h>
#include <asm/io.h>
#include <asm/irq.h>
@@ -98,6 +100,9 @@ unsigned long at32ap7000_osc_rates[3] = {
[2] = 12000000,
};
+static struct clk osc0;
+static struct clk osc1;
+
static unsigned long osc_get_rate(struct clk *clk)
{
return at32ap7000_osc_rates[clk->index];
@@ -107,9 +112,6 @@ static unsigned long pll_get_rate(struct clk *clk, unsigned long control)
{
unsigned long div, mul, rate;
- if (!(control & PM_BIT(PLLEN)))
- return 0;
-
div = PM_BFEXT(PLLDIV, control) + 1;
mul = PM_BFEXT(PLLMUL, control) + 1;
@@ -120,6 +122,71 @@ static unsigned long pll_get_rate(struct clk *clk, unsigned long control)
return rate;
}
+static long pll_set_rate(struct clk *clk, unsigned long rate,
+ u32 *pll_ctrl)
+{
+ unsigned long mul;
+ unsigned long mul_best_fit = 0;
+ unsigned long div;
+ unsigned long div_min;
+ unsigned long div_max;
+ unsigned long div_best_fit = 0;
+ unsigned long base;
+ unsigned long pll_in;
+ unsigned long actual = 0;
+ unsigned long rate_error;
+ unsigned long rate_error_prev = ~0UL;
+ u32 ctrl;
+
+ /* Rate must be between 80 MHz and 200 Mhz. */
+ if (rate < 80000000UL || rate > 200000000UL)
+ return -EINVAL;
+
+ ctrl = PM_BF(PLLOPT, 4);
+ base = clk->parent->get_rate(clk->parent);
+
+ /* PLL input frequency must be between 6 MHz and 32 MHz. */
+ div_min = DIV_ROUND_UP(base, 32000000UL);
+ div_max = base / 6000000UL;
+
+ if (div_max < div_min)
+ return -EINVAL;
+
+ for (div = div_min; div <= div_max; div++) {
+ pll_in = (base + div / 2) / div;
+ mul = (rate + pll_in / 2) / pll_in;
+
+ if (mul == 0)
+ continue;
+
+ actual = pll_in * mul;
+ rate_error = abs(actual - rate);
+
+ if (rate_error < rate_error_prev) {
+ mul_best_fit = mul;
+ div_best_fit = div;
+ rate_error_prev = rate_error;
+ }
+
+ if (rate_error == 0)
+ break;
+ }
+
+ if (div_best_fit == 0)
+ return -EINVAL;
+
+ ctrl |= PM_BF(PLLMUL, mul_best_fit - 1);
+ ctrl |= PM_BF(PLLDIV, div_best_fit - 1);
+ ctrl |= PM_BF(PLLCOUNT, 16);
+
+ if (clk->parent == &osc1)
+ ctrl |= PM_BIT(PLLOSC);
+
+ *pll_ctrl = ctrl;
+
+ return actual;
+}
+
static unsigned long pll0_get_rate(struct clk *clk)
{
u32 control;
@@ -129,6 +196,41 @@ static unsigned long pll0_get_rate(struct clk *clk)
return pll_get_rate(clk, control);
}
+static void pll1_mode(struct clk *clk, int enabled)
+{
+ unsigned long timeout;
+ u32 status;
+ u32 ctrl;
+
+ ctrl = pm_readl(PLL1);
+
+ if (enabled) {
+ if (!PM_BFEXT(PLLMUL, ctrl) && !PM_BFEXT(PLLDIV, ctrl)) {
+ pr_debug("clk %s: failed to enable, rate not set\n",
+ clk->name);
+ return;
+ }
+
+ ctrl |= PM_BIT(PLLEN);
+ pm_writel(PLL1, ctrl);
+
+ /* Wait for PLL lock. */
+ for (timeout = 10000; timeout; timeout--) {
+ status = pm_readl(ISR);
+ if (status & PM_BIT(LOCK1))
+ break;
+ udelay(10);
+ }
+
+ if (!(status & PM_BIT(LOCK1)))
+ printk(KERN_ERR "clk %s: timeout waiting for lock\n",
+ clk->name);
+ } else {
+ ctrl &= ~PM_BIT(PLLEN);
+ pm_writel(PLL1, ctrl);
+ }
+}
+
static unsigned long pll1_get_rate(struct clk *clk)
{
u32 control;
@@ -138,6 +240,49 @@ static unsigned long pll1_get_rate(struct clk *clk)
return pll_get_rate(clk, control);
}
+static long pll1_set_rate(struct clk *clk, unsigned long rate, int apply)
+{
+ u32 ctrl = 0;
+ unsigned long actual_rate;
+
+ actual_rate = pll_set_rate(clk, rate, &ctrl);
+
+ if (apply) {
+ if (actual_rate != rate)
+ return -EINVAL;
+ if (clk->users > 0)
+ return -EBUSY;
+ pr_debug(KERN_INFO "clk %s: new rate %lu (actual rate %lu)\n",
+ clk->name, rate, actual_rate);
+ pm_writel(PLL1, ctrl);
+ }
+
+ return actual_rate;
+}
+
+static int pll1_set_parent(struct clk *clk, struct clk *parent)
+{
+ u32 ctrl;
+
+ if (clk->users > 0)
+ return -EBUSY;
+
+ ctrl = pm_readl(PLL1);
+ WARN_ON(ctrl & PM_BIT(PLLEN));
+
+ if (parent == &osc0)
+ ctrl &= ~PM_BIT(PLLOSC);
+ else if (parent == &osc1)
+ ctrl |= PM_BIT(PLLOSC);
+ else
+ return -EINVAL;
+
+ pm_writel(PLL1, ctrl);
+ clk->parent = parent;
+
+ return 0;
+}
+
/*
* The AT32AP7000 has five primary clock sources: One 32kHz
* oscillator, two crystal oscillators and two PLLs.
@@ -166,7 +311,10 @@ static struct clk pll0 = {
};
static struct clk pll1 = {
.name = "pll1",
+ .mode = pll1_mode,
.get_rate = pll1_get_rate,
+ .set_rate = pll1_set_rate,
+ .set_parent = pll1_set_parent,
.parent = &osc0,
};
@@ -605,19 +753,32 @@ static inline void set_ebi_sfr_bits(u32 mask)
}
/* --------------------------------------------------------------------
- * System Timer/Counter (TC)
+ * Timer/Counter (TC)
* -------------------------------------------------------------------- */
-static struct resource at32_systc0_resource[] = {
+
+static struct resource at32_tcb0_resource[] = {
PBMEM(0xfff00c00),
IRQ(22),
};
-struct platform_device at32_systc0_device = {
- .name = "systc",
+static struct platform_device at32_tcb0_device = {
+ .name = "atmel_tcb",
.id = 0,
- .resource = at32_systc0_resource,
- .num_resources = ARRAY_SIZE(at32_systc0_resource),
+ .resource = at32_tcb0_resource,
+ .num_resources = ARRAY_SIZE(at32_tcb0_resource),
};
-DEV_CLK(pclk, at32_systc0, pbb, 3);
+DEV_CLK(t0_clk, at32_tcb0, pbb, 3);
+
+static struct resource at32_tcb1_resource[] = {
+ PBMEM(0xfff01000),
+ IRQ(23),
+};
+static struct platform_device at32_tcb1_device = {
+ .name = "atmel_tcb",
+ .id = 1,
+ .resource = at32_tcb1_resource,
+ .num_resources = ARRAY_SIZE(at32_tcb1_resource),
+};
+DEV_CLK(t0_clk, at32_tcb1, pbb, 4);
/* --------------------------------------------------------------------
* PIO
@@ -669,7 +830,8 @@ void __init at32_add_system_devices(void)
platform_device_register(&pdc_device);
platform_device_register(&dmaca0_device);
- platform_device_register(&at32_systc0_device);
+ platform_device_register(&at32_tcb0_device);
+ platform_device_register(&at32_tcb1_device);
platform_device_register(&pio0_device);
platform_device_register(&pio1_device);
@@ -989,7 +1151,9 @@ static struct clk atmel_twi0_pclk = {
.index = 2,
};
-struct platform_device *__init at32_add_device_twi(unsigned int id)
+struct platform_device *__init at32_add_device_twi(unsigned int id,
+ struct i2c_board_info *b,
+ unsigned int n)
{
struct platform_device *pdev;
@@ -1009,6 +1173,9 @@ struct platform_device *__init at32_add_device_twi(unsigned int id)
atmel_twi0_pclk.dev = &pdev->dev;
+ if (b)
+ i2c_register_board_info(id, b, n);
+
platform_device_add(pdev);
return pdev;
@@ -1351,9 +1518,39 @@ static struct clk usba0_hclk = {
.index = 6,
};
+#define EP(nam, idx, maxpkt, maxbk, dma, isoc) \
+ [idx] = { \
+ .name = nam, \
+ .index = idx, \
+ .fifo_size = maxpkt, \
+ .nr_banks = maxbk, \
+ .can_dma = dma, \
+ .can_isoc = isoc, \
+ }
+
+static struct usba_ep_data at32_usba_ep[] __initdata = {
+ EP("ep0", 0, 64, 1, 0, 0),
+ EP("ep1", 1, 512, 2, 1, 1),
+ EP("ep2", 2, 512, 2, 1, 1),
+ EP("ep3-int", 3, 64, 3, 1, 0),
+ EP("ep4-int", 4, 64, 3, 1, 0),
+ EP("ep5", 5, 1024, 3, 1, 1),
+ EP("ep6", 6, 1024, 3, 1, 1),
+};
+
+#undef EP
+
struct platform_device *__init
at32_add_device_usba(unsigned int id, struct usba_platform_data *data)
{
+ /*
+ * pdata doesn't have room for any endpoints, so we need to
+ * append room for the ones we need right after it.
+ */
+ struct {
+ struct usba_platform_data pdata;
+ struct usba_ep_data ep[7];
+ } usba_data;
struct platform_device *pdev;
if (id != 0)
@@ -1367,13 +1564,20 @@ at32_add_device_usba(unsigned int id, struct usba_platform_data *data)
ARRAY_SIZE(usba0_resource)))
goto out_free_pdev;
- if (data) {
- if (platform_device_add_data(pdev, data, sizeof(*data)))
- goto out_free_pdev;
+ if (data)
+ usba_data.pdata.vbus_pin = data->vbus_pin;
+ else
+ usba_data.pdata.vbus_pin = -EINVAL;
+
+ data = &usba_data.pdata;
+ data->num_ep = ARRAY_SIZE(at32_usba_ep);
+ memcpy(data->ep, at32_usba_ep, sizeof(at32_usba_ep));
- if (data->vbus_pin != GPIO_PIN_NONE)
- at32_select_gpio(data->vbus_pin, 0);
- }
+ if (platform_device_add_data(pdev, data, sizeof(usba_data)))
+ goto out_free_pdev;
+
+ if (data->vbus_pin >= 0)
+ at32_select_gpio(data->vbus_pin, 0);
usba0_pclk.dev = &pdev->dev;
usba0_hclk.dev = &pdev->dev;
@@ -1694,7 +1898,8 @@ struct clk *at32_clock_list[] = {
&pio2_mck,
&pio3_mck,
&pio4_mck,
- &at32_systc0_pclk,
+ &at32_tcb0_t0_clk,
+ &at32_tcb1_t0_clk,
&atmel_usart0_usart,
&atmel_usart1_usart,
&atmel_usart2_usart,
diff --git a/arch/avr32/mach-at32ap/intc.c b/arch/avr32/mach-at32ap/intc.c
index 0b286cd53028..097cf4e84052 100644
--- a/arch/avr32/mach-at32ap/intc.c
+++ b/arch/avr32/mach-at32ap/intc.c
@@ -13,7 +13,6 @@
#include <linux/irq.h>
#include <linux/platform_device.h>
-#include <asm/intc.h>
#include <asm/io.h>
#include "intc.h"
diff --git a/arch/avr32/mach-at32ap/pm-at32ap700x.S b/arch/avr32/mach-at32ap/pm-at32ap700x.S
new file mode 100644
index 000000000000..949e2485e278
--- /dev/null
+++ b/arch/avr32/mach-at32ap/pm-at32ap700x.S
@@ -0,0 +1,66 @@
+/*
+ * Low-level Power Management code.
+ *
+ * Copyright (C) 2008 Atmel Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <asm/asm.h>
+#include <asm/asm-offsets.h>
+#include <asm/thread_info.h>
+#include <asm/arch/pm.h>
+
+ .section .bss, "wa", @nobits
+ .global disable_idle_sleep
+ .type disable_idle_sleep, @object
+disable_idle_sleep:
+ .int 4
+ .size disable_idle_sleep, . - disable_idle_sleep
+
+ /* Keep this close to the irq handlers */
+ .section .irq.text, "ax", @progbits
+
+ /*
+ * void cpu_enter_idle(void)
+ *
+ * Put the CPU into "idle" mode, in which it will consume
+ * significantly less power.
+ *
+ * If an interrupt comes along in the window between
+ * unmask_interrupts and the sleep instruction below, the
+ * interrupt code will adjust the return address so that we
+ * never execute the sleep instruction. This is required
+ * because the AP7000 doesn't unmask interrupts when entering
+ * sleep modes; later CPUs may not need this workaround.
+ */
+ .global cpu_enter_idle
+ .type cpu_enter_idle, @function
+cpu_enter_idle:
+ mask_interrupts
+ get_thread_info r8
+ ld.w r9, r8[TI_flags]
+ bld r9, TIF_NEED_RESCHED
+ brcs .Lret_from_sleep
+ sbr r9, TIF_CPU_GOING_TO_SLEEP
+ st.w r8[TI_flags], r9
+ unmask_interrupts
+ sleep CPU_SLEEP_IDLE
+ .size cpu_idle_sleep, . - cpu_idle_sleep
+
+ /*
+ * Common return path for PM functions that don't run from
+ * SRAM.
+ */
+ .global cpu_idle_skip_sleep
+ .type cpu_idle_skip_sleep, @function
+cpu_idle_skip_sleep:
+ mask_interrupts
+ ld.w r9, r8[TI_flags]
+ cbr r9, TIF_CPU_GOING_TO_SLEEP
+ st.w r8[TI_flags], r9
+.Lret_from_sleep:
+ unmask_interrupts
+ retal r12
+ .size cpu_idle_skip_sleep, . - cpu_idle_skip_sleep
diff --git a/arch/avr32/mach-at32ap/time-tc.c b/arch/avr32/mach-at32ap/time-tc.c
deleted file mode 100644
index 10265863c982..000000000000
--- a/arch/avr32/mach-at32ap/time-tc.c
+++ /dev/null
@@ -1,218 +0,0 @@
-/*
- * Copyright (C) 2004-2007 Atmel Corporation
- *
- * Based on MIPS implementation arch/mips/kernel/time.c
- * Copyright 2001 MontaVista Software Inc.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include <linux/clk.h>
-#include <linux/clocksource.h>
-#include <linux/time.h>
-#include <linux/module.h>
-#include <linux/interrupt.h>
-#include <linux/irq.h>
-#include <linux/kernel_stat.h>
-#include <linux/errno.h>
-#include <linux/init.h>
-#include <linux/profile.h>
-#include <linux/sysdev.h>
-#include <linux/err.h>
-
-#include <asm/div64.h>
-#include <asm/sysreg.h>
-#include <asm/io.h>
-#include <asm/sections.h>
-
-#include <asm/arch/time.h>
-
-/* how many counter cycles in a jiffy? */
-static u32 cycles_per_jiffy;
-
-/* the count value for the next timer interrupt */
-static u32 expirelo;
-
-/* the I/O registers of the TC module */
-static void __iomem *ioregs;
-
-cycle_t read_cycle_count(void)
-{
- return (cycle_t)timer_read(ioregs, 0, CV);
-}
-
-struct clocksource clocksource_avr32 = {
- .name = "avr32",
- .rating = 342,
- .read = read_cycle_count,
- .mask = CLOCKSOURCE_MASK(16),
- .shift = 16,
- .flags = CLOCK_SOURCE_IS_CONTINUOUS,
-};
-
-static void avr32_timer_ack(void)
-{
- u16 count = expirelo;
-
- /* Ack this timer interrupt and set the next one, use a u16
- * variable so it will wrap around correctly */
- count += cycles_per_jiffy;
- expirelo = count;
- timer_write(ioregs, 0, RC, expirelo);
-
- /* Check to see if we have missed any timer interrupts */
- count = timer_read(ioregs, 0, CV);
- if ((count - expirelo) < 0x7fff) {
- expirelo = count + cycles_per_jiffy;
- timer_write(ioregs, 0, RC, expirelo);
- }
-}
-
-u32 avr32_hpt_read(void)
-{
- return timer_read(ioregs, 0, CV);
-}
-
-static int avr32_timer_calc_div_and_set_jiffies(struct clk *pclk)
-{
- unsigned int cycles_max = (clocksource_avr32.mask + 1) / 2;
- unsigned int divs[] = { 4, 8, 16, 32 };
- int divs_size = ARRAY_SIZE(divs);
- int i = 0;
- unsigned long count_hz;
- unsigned long shift;
- unsigned long mult;
- int clock_div = -1;
- u64 tmp;
-
- shift = clocksource_avr32.shift;
-
- do {
- count_hz = clk_get_rate(pclk) / divs[i];
- mult = clocksource_hz2mult(count_hz, shift);
- clocksource_avr32.mult = mult;
-
- tmp = TICK_NSEC;
- tmp <<= shift;
- tmp += mult / 2;
- do_div(tmp, mult);
-
- cycles_per_jiffy = tmp;
- } while (cycles_per_jiffy > cycles_max && ++i < divs_size);
-
- clock_div = i + 1;
-
- if (clock_div > divs_size) {
- pr_debug("timer: could not calculate clock divider\n");
- return -EFAULT;
- }
-
- /* Set the clock divider */
- timer_write(ioregs, 0, CMR, TIMER_BF(CMR_TCCLKS, clock_div));
-
- return 0;
-}
-
-int avr32_hpt_init(unsigned int count)
-{
- struct resource *regs;
- struct clk *pclk;
- int irq = -1;
- int ret = 0;
-
- ret = -ENXIO;
-
- irq = platform_get_irq(&at32_systc0_device, 0);
- if (irq < 0) {
- pr_debug("timer: could not get irq\n");
- goto out_error;
- }
-
- pclk = clk_get(&at32_systc0_device.dev, "pclk");
- if (IS_ERR(pclk)) {
- pr_debug("timer: could not get clk: %ld\n", PTR_ERR(pclk));
- goto out_error;
- }
- clk_enable(pclk);
-
- regs = platform_get_resource(&at32_systc0_device, IORESOURCE_MEM, 0);
- if (!regs) {
- pr_debug("timer: could not get resource\n");
- goto out_error_clk;
- }
-
- ioregs = ioremap(regs->start, regs->end - regs->start + 1);
- if (!ioregs) {
- pr_debug("timer: could not get ioregs\n");
- goto out_error_clk;
- }
-
- ret = avr32_timer_calc_div_and_set_jiffies(pclk);
- if (ret)
- goto out_error_io;
-
- ret = setup_irq(irq, &timer_irqaction);
- if (ret) {
- pr_debug("timer: could not request irq %d: %d\n",
- irq, ret);
- goto out_error_io;
- }
-
- expirelo = (timer_read(ioregs, 0, CV) / cycles_per_jiffy + 1)
- * cycles_per_jiffy;
-
- /* Enable clock and interrupts on RC compare */
- timer_write(ioregs, 0, CCR, TIMER_BIT(CCR_CLKEN));
- timer_write(ioregs, 0, IER, TIMER_BIT(IER_CPCS));
- /* Set cycles to first interrupt */
- timer_write(ioregs, 0, RC, expirelo);
-
- printk(KERN_INFO "timer: AT32AP system timer/counter at 0x%p irq %d\n",
- ioregs, irq);
-
- return 0;
-
-out_error_io:
- iounmap(ioregs);
-out_error_clk:
- clk_put(pclk);
-out_error:
- return ret;
-}
-
-int avr32_hpt_start(void)
-{
- timer_write(ioregs, 0, CCR, TIMER_BIT(CCR_SWTRG));
- return 0;
-}
-
-irqreturn_t timer_interrupt(int irq, void *dev_id)
-{
- unsigned int sr = timer_read(ioregs, 0, SR);
-
- if (sr & TIMER_BIT(SR_CPCS)) {
- /* ack timer interrupt and try to set next interrupt */
- avr32_timer_ack();
-
- /*
- * Call the generic timer interrupt handler
- */
- write_seqlock(&xtime_lock);
- do_timer(1);
- write_sequnlock(&xtime_lock);
-
- /*
- * In UP mode, we call local_timer_interrupt() to do profiling
- * and process accounting.
- *
- * SMP is not supported yet.
- */
- local_timer_interrupt(irq, dev_id);
-
- return IRQ_HANDLED;
- }
-
- return IRQ_NONE;
-}
diff --git a/arch/avr32/mm/init.c b/arch/avr32/mm/init.c
index 480760bde63f..0e64ddc45e37 100644
--- a/arch/avr32/mm/init.c
+++ b/arch/avr32/mm/init.c
@@ -34,9 +34,6 @@ struct page *empty_zero_page;
*/
unsigned long mmu_context_cache = NO_CONTEXT;
-#define START_PFN (NODE_DATA(0)->bdata->node_boot_start >> PAGE_SHIFT)
-#define MAX_LOW_PFN (NODE_DATA(0)->bdata->node_low_pfn)
-
void show_mem(void)
{
int total = 0, reserved = 0, cached = 0;
diff --git a/arch/avr32/oprofile/op_model_avr32.c b/arch/avr32/oprofile/op_model_avr32.c
index e2f876bfc86b..df42325c7f81 100644
--- a/arch/avr32/oprofile/op_model_avr32.c
+++ b/arch/avr32/oprofile/op_model_avr32.c
@@ -16,7 +16,6 @@
#include <linux/sched.h>
#include <linux/types.h>
-#include <asm/intc.h>
#include <asm/sysreg.h>
#include <asm/system.h>