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-rw-r--r--Documentation/power/runtime_pm.txt4
-rw-r--r--arch/arm/Kconfig2
-rw-r--r--arch/arm/boot/compressed/head.S20
-rw-r--r--arch/arm/include/asm/thread_info.h11
-rw-r--r--arch/arm/kernel/traps.c31
-rw-r--r--arch/arm/mach-sa1100/clock.c43
-rw-r--r--arch/arm/mach-sa1100/include/mach/entry-macro.S41
-rw-r--r--arch/arm/mach-sa1100/include/mach/irqs.h102
-rw-r--r--arch/arm/mach-sa1100/irq.c229
-rw-r--r--arch/arm/mm/Kconfig1
-rw-r--r--arch/arm/mm/cache-l2x0.c26
-rw-r--r--arch/arm/mm/dma-mapping.c1
-rw-r--r--arch/arm/mm/highmem.c3
-rw-r--r--arch/arm/mm/proc-v7.S2
-rw-r--r--arch/arm/mm/proc-xscale.S4
-rw-r--r--drivers/amba/bus.c15
-rw-r--r--drivers/dma/pl330.c99
-rw-r--r--drivers/pcmcia/sa1100_generic.c1
-rw-r--r--drivers/pcmcia/sa1111_generic.c7
-rw-r--r--drivers/pcmcia/sa11xx_base.c14
-rw-r--r--drivers/pcmcia/soc_common.c4
-rw-r--r--drivers/video/fbdev/sa1100fb.c30
-rw-r--r--drivers/video/fbdev/sa1100fb.h1
-rw-r--r--include/linux/amba/bus.h10
-rw-r--r--include/linux/pm_runtime.h6
25 files changed, 435 insertions, 272 deletions
diff --git a/Documentation/power/runtime_pm.txt b/Documentation/power/runtime_pm.txt
index f32ce5419573..397b81593142 100644
--- a/Documentation/power/runtime_pm.txt
+++ b/Documentation/power/runtime_pm.txt
@@ -468,6 +468,10 @@ drivers/base/power/runtime.c and include/linux/pm_runtime.h:
- set the power.irq_safe flag for the device, causing the runtime-PM
callbacks to be invoked with interrupts off
+ bool pm_runtime_is_irq_safe(struct device *dev);
+ - return true if power.irq_safe flag was set for the device, causing
+ the runtime-PM callbacks to be invoked with interrupts off
+
void pm_runtime_mark_last_busy(struct device *dev);
- set the power.last_busy field to the current time
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 89c4b5ccc68d..622e364f7711 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -702,7 +702,9 @@ config ARCH_SA1100
select CPU_SA1100
select GENERIC_CLOCKEVENTS
select HAVE_IDE
+ select IRQ_DOMAIN
select ISA
+ select MULTI_IRQ_HANDLER
select NEED_MACH_MEMORY_H
select SPARSE_IRQ
help
diff --git a/arch/arm/boot/compressed/head.S b/arch/arm/boot/compressed/head.S
index 413fd94b5301..68be9017593d 100644
--- a/arch/arm/boot/compressed/head.S
+++ b/arch/arm/boot/compressed/head.S
@@ -397,8 +397,7 @@ dtb_check_done:
add sp, sp, r6
#endif
- tst r4, #1
- bleq cache_clean_flush
+ bl cache_clean_flush
adr r0, BSYM(restart)
add r0, r0, r6
@@ -1047,6 +1046,8 @@ cache_clean_flush:
b call_cache_fn
__armv4_mpu_cache_flush:
+ tst r4, #1
+ movne pc, lr
mov r2, #1
mov r3, #0
mcr p15, 0, ip, c7, c6, 0 @ invalidate D cache
@@ -1064,6 +1065,8 @@ __armv4_mpu_cache_flush:
mov pc, lr
__fa526_cache_flush:
+ tst r4, #1
+ movne pc, lr
mov r1, #0
mcr p15, 0, r1, c7, c14, 0 @ clean and invalidate D cache
mcr p15, 0, r1, c7, c5, 0 @ flush I cache
@@ -1072,13 +1075,16 @@ __fa526_cache_flush:
__armv6_mmu_cache_flush:
mov r1, #0
- mcr p15, 0, r1, c7, c14, 0 @ clean+invalidate D
+ tst r4, #1
+ mcreq p15, 0, r1, c7, c14, 0 @ clean+invalidate D
mcr p15, 0, r1, c7, c5, 0 @ invalidate I+BTB
- mcr p15, 0, r1, c7, c15, 0 @ clean+invalidate unified
+ mcreq p15, 0, r1, c7, c15, 0 @ clean+invalidate unified
mcr p15, 0, r1, c7, c10, 4 @ drain WB
mov pc, lr
__armv7_mmu_cache_flush:
+ tst r4, #1
+ bne iflush
mrc p15, 0, r10, c0, c1, 5 @ read ID_MMFR1
tst r10, #0xf << 16 @ hierarchical cache (ARMv7)
mov r10, #0
@@ -1139,6 +1145,8 @@ iflush:
mov pc, lr
__armv5tej_mmu_cache_flush:
+ tst r4, #1
+ movne pc, lr
1: mrc p15, 0, r15, c7, c14, 3 @ test,clean,invalidate D cache
bne 1b
mcr p15, 0, r0, c7, c5, 0 @ flush I cache
@@ -1146,6 +1154,8 @@ __armv5tej_mmu_cache_flush:
mov pc, lr
__armv4_mmu_cache_flush:
+ tst r4, #1
+ movne pc, lr
mov r2, #64*1024 @ default: 32K dcache size (*2)
mov r11, #32 @ default: 32 byte line size
mrc p15, 0, r3, c0, c0, 1 @ read cache type
@@ -1179,6 +1189,8 @@ no_cache_id:
__armv3_mmu_cache_flush:
__armv3_mpu_cache_flush:
+ tst r4, #1
+ movne pc, lr
mov r1, #0
mcr p15, 0, r1, c7, c0, 0 @ invalidate whole cache v3
mov pc, lr
diff --git a/arch/arm/include/asm/thread_info.h b/arch/arm/include/asm/thread_info.h
index b9dc3dce59a6..d890e41f5520 100644
--- a/arch/arm/include/asm/thread_info.h
+++ b/arch/arm/include/asm/thread_info.h
@@ -44,16 +44,6 @@ struct cpu_context_save {
__u32 extra[2]; /* Xscale 'acc' register, etc */
};
-struct arm_restart_block {
- union {
- /* For user cache flushing */
- struct {
- unsigned long start;
- unsigned long end;
- } cache;
- };
-};
-
/*
* low level task data that entry.S needs immediate access to.
* __switch_to() assumes cpu_context follows immediately after cpu_domain.
@@ -79,7 +69,6 @@ struct thread_info {
unsigned long thumbee_state; /* ThumbEE Handler Base register */
#endif
struct restart_block restart_block;
- struct arm_restart_block arm_restart_block;
};
#define INIT_THREAD_INFO(tsk) \
diff --git a/arch/arm/kernel/traps.c b/arch/arm/kernel/traps.c
index bb121b52ef36..788e23fe64d8 100644
--- a/arch/arm/kernel/traps.c
+++ b/arch/arm/kernel/traps.c
@@ -533,8 +533,6 @@ static int bad_syscall(int n, struct pt_regs *regs)
return regs->ARM_r0;
}
-static long do_cache_op_restart(struct restart_block *);
-
static inline int
__do_cache_op(unsigned long start, unsigned long end)
{
@@ -543,24 +541,8 @@ __do_cache_op(unsigned long start, unsigned long end)
do {
unsigned long chunk = min(PAGE_SIZE, end - start);
- if (signal_pending(current)) {
- struct thread_info *ti = current_thread_info();
-
- ti->restart_block = (struct restart_block) {
- .fn = do_cache_op_restart,
- };
-
- ti->arm_restart_block = (struct arm_restart_block) {
- {
- .cache = {
- .start = start,
- .end = end,
- },
- },
- };
-
- return -ERESTART_RESTARTBLOCK;
- }
+ if (fatal_signal_pending(current))
+ return 0;
ret = flush_cache_user_range(start, start + chunk);
if (ret)
@@ -573,15 +555,6 @@ __do_cache_op(unsigned long start, unsigned long end)
return 0;
}
-static long do_cache_op_restart(struct restart_block *unused)
-{
- struct arm_restart_block *restart_block;
-
- restart_block = &current_thread_info()->arm_restart_block;
- return __do_cache_op(restart_block->cache.start,
- restart_block->cache.end);
-}
-
static inline int
do_cache_op(unsigned long start, unsigned long end, int flags)
{
diff --git a/arch/arm/mach-sa1100/clock.c b/arch/arm/mach-sa1100/clock.c
index 9fa6a990cf03..03c75a811cb0 100644
--- a/arch/arm/mach-sa1100/clock.c
+++ b/arch/arm/mach-sa1100/clock.c
@@ -15,10 +15,12 @@
#include <linux/clkdev.h>
#include <mach/hardware.h>
+#include <mach/generic.h>
struct clkops {
void (*enable)(struct clk *);
void (*disable)(struct clk *);
+ unsigned long (*get_rate)(struct clk *);
};
struct clk {
@@ -33,13 +35,6 @@ struct clk clk_##_name = { \
static DEFINE_SPINLOCK(clocks_lock);
-/* Dummy clk routine to build generic kernel parts that may be using them */
-unsigned long clk_get_rate(struct clk *clk)
-{
- return 0;
-}
-EXPORT_SYMBOL(clk_get_rate);
-
static void clk_gpio27_enable(struct clk *clk)
{
/*
@@ -58,6 +53,19 @@ static void clk_gpio27_disable(struct clk *clk)
GAFR &= ~GPIO_32_768kHz;
}
+static void clk_cpu_enable(struct clk *clk)
+{
+}
+
+static void clk_cpu_disable(struct clk *clk)
+{
+}
+
+static unsigned long clk_cpu_get_rate(struct clk *clk)
+{
+ return sa11x0_getspeed(0) * 1000;
+}
+
int clk_enable(struct clk *clk)
{
unsigned long flags;
@@ -87,16 +95,37 @@ void clk_disable(struct clk *clk)
}
EXPORT_SYMBOL(clk_disable);
+unsigned long clk_get_rate(struct clk *clk)
+{
+ if (clk && clk->ops && clk->ops->get_rate)
+ return clk->ops->get_rate(clk);
+
+ return 0;
+}
+EXPORT_SYMBOL(clk_get_rate);
+
const struct clkops clk_gpio27_ops = {
.enable = clk_gpio27_enable,
.disable = clk_gpio27_disable,
};
+const struct clkops clk_cpu_ops = {
+ .enable = clk_cpu_enable,
+ .disable = clk_cpu_disable,
+ .get_rate = clk_cpu_get_rate,
+};
+
static DEFINE_CLK(gpio27, &clk_gpio27_ops);
+static DEFINE_CLK(cpu, &clk_cpu_ops);
+
static struct clk_lookup sa11xx_clkregs[] = {
CLKDEV_INIT("sa1111.0", NULL, &clk_gpio27),
CLKDEV_INIT("sa1100-rtc", NULL, NULL),
+ CLKDEV_INIT("sa11x0-fb", NULL, &clk_cpu),
+ CLKDEV_INIT("sa11x0-pcmcia", NULL, &clk_cpu),
+ /* sa1111 names devices using internal offsets, PCMCIA is at 0x1800 */
+ CLKDEV_INIT("1800", NULL, &clk_cpu),
};
static int __init sa11xx_clk_init(void)
diff --git a/arch/arm/mach-sa1100/include/mach/entry-macro.S b/arch/arm/mach-sa1100/include/mach/entry-macro.S
deleted file mode 100644
index 8cf7630bf024..000000000000
--- a/arch/arm/mach-sa1100/include/mach/entry-macro.S
+++ /dev/null
@@ -1,41 +0,0 @@
-/*
- * arch/arm/mach-sa1100/include/mach/entry-macro.S
- *
- * Low-level IRQ helper macros for SA1100-based platforms
- *
- * This file is licensed under the terms of the GNU General Public
- * License version 2. This program is licensed "as is" without any
- * warranty of any kind, whether express or implied.
- */
-
- .macro get_irqnr_preamble, base, tmp
- mov \base, #0xfa000000 @ ICIP = 0xfa050000
- add \base, \base, #0x00050000
- .endm
-
- .macro get_irqnr_and_base, irqnr, irqstat, base, tmp
- ldr \irqstat, [\base] @ get irqs
- ldr \irqnr, [\base, #4] @ ICMR = 0xfa050004
- ands \irqstat, \irqstat, \irqnr
- mov \irqnr, #0
- beq 1001f
- tst \irqstat, #0xff
- moveq \irqstat, \irqstat, lsr #8
- addeq \irqnr, \irqnr, #8
- tsteq \irqstat, #0xff
- moveq \irqstat, \irqstat, lsr #8
- addeq \irqnr, \irqnr, #8
- tsteq \irqstat, #0xff
- moveq \irqstat, \irqstat, lsr #8
- addeq \irqnr, \irqnr, #8
- tst \irqstat, #0x0f
- moveq \irqstat, \irqstat, lsr #4
- addeq \irqnr, \irqnr, #4
- tst \irqstat, #0x03
- moveq \irqstat, \irqstat, lsr #2
- addeq \irqnr, \irqnr, #2
- tst \irqstat, #0x01
- addeqs \irqnr, \irqnr, #1
-1001:
- .endm
-
diff --git a/arch/arm/mach-sa1100/include/mach/irqs.h b/arch/arm/mach-sa1100/include/mach/irqs.h
index 3790298b7142..de0983494c7e 100644
--- a/arch/arm/mach-sa1100/include/mach/irqs.h
+++ b/arch/arm/mach-sa1100/include/mach/irqs.h
@@ -8,56 +8,56 @@
* 2001/11/14 RMK Cleaned up and standardised a lot of the IRQs.
*/
-#define IRQ_GPIO0 0
-#define IRQ_GPIO1 1
-#define IRQ_GPIO2 2
-#define IRQ_GPIO3 3
-#define IRQ_GPIO4 4
-#define IRQ_GPIO5 5
-#define IRQ_GPIO6 6
-#define IRQ_GPIO7 7
-#define IRQ_GPIO8 8
-#define IRQ_GPIO9 9
-#define IRQ_GPIO10 10
-#define IRQ_GPIO11_27 11
-#define IRQ_LCD 12 /* LCD controller */
-#define IRQ_Ser0UDC 13 /* Ser. port 0 UDC */
-#define IRQ_Ser1SDLC 14 /* Ser. port 1 SDLC */
-#define IRQ_Ser1UART 15 /* Ser. port 1 UART */
-#define IRQ_Ser2ICP 16 /* Ser. port 2 ICP */
-#define IRQ_Ser3UART 17 /* Ser. port 3 UART */
-#define IRQ_Ser4MCP 18 /* Ser. port 4 MCP */
-#define IRQ_Ser4SSP 19 /* Ser. port 4 SSP */
-#define IRQ_DMA0 20 /* DMA controller channel 0 */
-#define IRQ_DMA1 21 /* DMA controller channel 1 */
-#define IRQ_DMA2 22 /* DMA controller channel 2 */
-#define IRQ_DMA3 23 /* DMA controller channel 3 */
-#define IRQ_DMA4 24 /* DMA controller channel 4 */
-#define IRQ_DMA5 25 /* DMA controller channel 5 */
-#define IRQ_OST0 26 /* OS Timer match 0 */
-#define IRQ_OST1 27 /* OS Timer match 1 */
-#define IRQ_OST2 28 /* OS Timer match 2 */
-#define IRQ_OST3 29 /* OS Timer match 3 */
-#define IRQ_RTC1Hz 30 /* RTC 1 Hz clock */
-#define IRQ_RTCAlrm 31 /* RTC Alarm */
+#define IRQ_GPIO0 1
+#define IRQ_GPIO1 2
+#define IRQ_GPIO2 3
+#define IRQ_GPIO3 4
+#define IRQ_GPIO4 5
+#define IRQ_GPIO5 6
+#define IRQ_GPIO6 7
+#define IRQ_GPIO7 8
+#define IRQ_GPIO8 9
+#define IRQ_GPIO9 10
+#define IRQ_GPIO10 11
+#define IRQ_GPIO11_27 12
+#define IRQ_LCD 13 /* LCD controller */
+#define IRQ_Ser0UDC 14 /* Ser. port 0 UDC */
+#define IRQ_Ser1SDLC 15 /* Ser. port 1 SDLC */
+#define IRQ_Ser1UART 16 /* Ser. port 1 UART */
+#define IRQ_Ser2ICP 17 /* Ser. port 2 ICP */
+#define IRQ_Ser3UART 18 /* Ser. port 3 UART */
+#define IRQ_Ser4MCP 19 /* Ser. port 4 MCP */
+#define IRQ_Ser4SSP 20 /* Ser. port 4 SSP */
+#define IRQ_DMA0 21 /* DMA controller channel 0 */
+#define IRQ_DMA1 22 /* DMA controller channel 1 */
+#define IRQ_DMA2 23 /* DMA controller channel 2 */
+#define IRQ_DMA3 24 /* DMA controller channel 3 */
+#define IRQ_DMA4 25 /* DMA controller channel 4 */
+#define IRQ_DMA5 26 /* DMA controller channel 5 */
+#define IRQ_OST0 27 /* OS Timer match 0 */
+#define IRQ_OST1 28 /* OS Timer match 1 */
+#define IRQ_OST2 29 /* OS Timer match 2 */
+#define IRQ_OST3 30 /* OS Timer match 3 */
+#define IRQ_RTC1Hz 31 /* RTC 1 Hz clock */
+#define IRQ_RTCAlrm 32 /* RTC Alarm */
-#define IRQ_GPIO11 32
-#define IRQ_GPIO12 33
-#define IRQ_GPIO13 34
-#define IRQ_GPIO14 35
-#define IRQ_GPIO15 36
-#define IRQ_GPIO16 37
-#define IRQ_GPIO17 38
-#define IRQ_GPIO18 39
-#define IRQ_GPIO19 40
-#define IRQ_GPIO20 41
-#define IRQ_GPIO21 42
-#define IRQ_GPIO22 43
-#define IRQ_GPIO23 44
-#define IRQ_GPIO24 45
-#define IRQ_GPIO25 46
-#define IRQ_GPIO26 47
-#define IRQ_GPIO27 48
+#define IRQ_GPIO11 33
+#define IRQ_GPIO12 34
+#define IRQ_GPIO13 35
+#define IRQ_GPIO14 36
+#define IRQ_GPIO15 37
+#define IRQ_GPIO16 38
+#define IRQ_GPIO17 39
+#define IRQ_GPIO18 40
+#define IRQ_GPIO19 41
+#define IRQ_GPIO20 42
+#define IRQ_GPIO21 43
+#define IRQ_GPIO22 44
+#define IRQ_GPIO23 45
+#define IRQ_GPIO24 46
+#define IRQ_GPIO25 47
+#define IRQ_GPIO26 48
+#define IRQ_GPIO27 49
/*
* The next 16 interrupts are for board specific purposes. Since
@@ -65,8 +65,8 @@
* these. If you need more, increase IRQ_BOARD_END, but keep it
* within sensible limits. IRQs 49 to 64 are available.
*/
-#define IRQ_BOARD_START 49
-#define IRQ_BOARD_END 65
+#define IRQ_BOARD_START 50
+#define IRQ_BOARD_END 66
/*
* Figure out the MAX IRQ number.
diff --git a/arch/arm/mach-sa1100/irq.c b/arch/arm/mach-sa1100/irq.c
index 2124f1fc2fbe..63e2901db416 100644
--- a/arch/arm/mach-sa1100/irq.c
+++ b/arch/arm/mach-sa1100/irq.c
@@ -14,17 +14,73 @@
#include <linux/interrupt.h>
#include <linux/io.h>
#include <linux/irq.h>
+#include <linux/irqdomain.h>
#include <linux/ioport.h>
#include <linux/syscore_ops.h>
#include <mach/hardware.h>
#include <mach/irqs.h>
#include <asm/mach/irq.h>
+#include <asm/exception.h>
#include "generic.h"
/*
+ * We don't need to ACK IRQs on the SA1100 unless they're GPIOs
+ * this is for internal IRQs i.e. from IRQ LCD to RTCAlrm.
+ */
+static void sa1100_mask_irq(struct irq_data *d)
+{
+ ICMR &= ~BIT(d->hwirq);
+}
+
+static void sa1100_unmask_irq(struct irq_data *d)
+{
+ ICMR |= BIT(d->hwirq);
+}
+
+/*
+ * Apart form GPIOs, only the RTC alarm can be a wakeup event.
+ */
+static int sa1100_set_wake(struct irq_data *d, unsigned int on)
+{
+ if (BIT(d->hwirq) == IC_RTCAlrm) {
+ if (on)
+ PWER |= PWER_RTC;
+ else
+ PWER &= ~PWER_RTC;
+ return 0;
+ }
+ return -EINVAL;
+}
+
+static struct irq_chip sa1100_normal_chip = {
+ .name = "SC",
+ .irq_ack = sa1100_mask_irq,
+ .irq_mask = sa1100_mask_irq,
+ .irq_unmask = sa1100_unmask_irq,
+ .irq_set_wake = sa1100_set_wake,
+};
+
+static int sa1100_normal_irqdomain_map(struct irq_domain *d,
+ unsigned int irq, irq_hw_number_t hwirq)
+{
+ irq_set_chip_and_handler(irq, &sa1100_normal_chip,
+ handle_level_irq);
+ set_irq_flags(irq, IRQF_VALID);
+
+ return 0;
+}
+
+static struct irq_domain_ops sa1100_normal_irqdomain_ops = {
+ .map = sa1100_normal_irqdomain_map,
+ .xlate = irq_domain_xlate_onetwocell,
+};
+
+static struct irq_domain *sa1100_normal_irqdomain;
+
+/*
* SA1100 GPIO edge detection for IRQs:
* IRQs are generated on Falling-Edge, Rising-Edge, or both.
* Use this instead of directly setting GRER/GFER.
@@ -33,20 +89,11 @@ static int GPIO_IRQ_rising_edge;
static int GPIO_IRQ_falling_edge;
static int GPIO_IRQ_mask = (1 << 11) - 1;
-/*
- * To get the GPIO number from an IRQ number
- */
-#define GPIO_11_27_IRQ(i) ((i) - 21)
-#define GPIO11_27_MASK(irq) (1 << GPIO_11_27_IRQ(irq))
-
static int sa1100_gpio_type(struct irq_data *d, unsigned int type)
{
unsigned int mask;
- if (d->irq <= 10)
- mask = 1 << d->irq;
- else
- mask = GPIO11_27_MASK(d->irq);
+ mask = BIT(d->hwirq);
if (type == IRQ_TYPE_PROBE) {
if ((GPIO_IRQ_rising_edge | GPIO_IRQ_falling_edge) & mask)
@@ -70,41 +117,51 @@ static int sa1100_gpio_type(struct irq_data *d, unsigned int type)
}
/*
- * GPIO IRQs must be acknowledged. This is for IRQs from 0 to 10.
+ * GPIO IRQs must be acknowledged.
*/
-static void sa1100_low_gpio_ack(struct irq_data *d)
-{
- GEDR = (1 << d->irq);
-}
-
-static void sa1100_low_gpio_mask(struct irq_data *d)
-{
- ICMR &= ~(1 << d->irq);
-}
-
-static void sa1100_low_gpio_unmask(struct irq_data *d)
+static void sa1100_gpio_ack(struct irq_data *d)
{
- ICMR |= 1 << d->irq;
+ GEDR = BIT(d->hwirq);
}
-static int sa1100_low_gpio_wake(struct irq_data *d, unsigned int on)
+static int sa1100_gpio_wake(struct irq_data *d, unsigned int on)
{
if (on)
- PWER |= 1 << d->irq;
+ PWER |= BIT(d->hwirq);
else
- PWER &= ~(1 << d->irq);
+ PWER &= ~BIT(d->hwirq);
return 0;
}
+/*
+ * This is for IRQs from 0 to 10.
+ */
static struct irq_chip sa1100_low_gpio_chip = {
.name = "GPIO-l",
- .irq_ack = sa1100_low_gpio_ack,
- .irq_mask = sa1100_low_gpio_mask,
- .irq_unmask = sa1100_low_gpio_unmask,
+ .irq_ack = sa1100_gpio_ack,
+ .irq_mask = sa1100_mask_irq,
+ .irq_unmask = sa1100_unmask_irq,
.irq_set_type = sa1100_gpio_type,
- .irq_set_wake = sa1100_low_gpio_wake,
+ .irq_set_wake = sa1100_gpio_wake,
+};
+
+static int sa1100_low_gpio_irqdomain_map(struct irq_domain *d,
+ unsigned int irq, irq_hw_number_t hwirq)
+{
+ irq_set_chip_and_handler(irq, &sa1100_low_gpio_chip,
+ handle_edge_irq);
+ set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
+
+ return 0;
+}
+
+static struct irq_domain_ops sa1100_low_gpio_irqdomain_ops = {
+ .map = sa1100_low_gpio_irqdomain_map,
+ .xlate = irq_domain_xlate_onetwocell,
};
+static struct irq_domain *sa1100_low_gpio_irqdomain;
+
/*
* IRQ11 (GPIO11 through 27) handler. We enter here with the
* irq_controller_lock held, and IRQs disabled. Decode the IRQ
@@ -141,16 +198,9 @@ sa1100_high_gpio_handler(unsigned int irq, struct irq_desc *desc)
* In addition, the IRQs are all collected up into one bit in the
* interrupt controller registers.
*/
-static void sa1100_high_gpio_ack(struct irq_data *d)
-{
- unsigned int mask = GPIO11_27_MASK(d->irq);
-
- GEDR = mask;
-}
-
static void sa1100_high_gpio_mask(struct irq_data *d)
{
- unsigned int mask = GPIO11_27_MASK(d->irq);
+ unsigned int mask = BIT(d->hwirq);
GPIO_IRQ_mask &= ~mask;
@@ -160,7 +210,7 @@ static void sa1100_high_gpio_mask(struct irq_data *d)
static void sa1100_high_gpio_unmask(struct irq_data *d)
{
- unsigned int mask = GPIO11_27_MASK(d->irq);
+ unsigned int mask = BIT(d->hwirq);
GPIO_IRQ_mask |= mask;
@@ -168,61 +218,32 @@ static void sa1100_high_gpio_unmask(struct irq_data *d)
GFER = GPIO_IRQ_falling_edge & GPIO_IRQ_mask;
}
-static int sa1100_high_gpio_wake(struct irq_data *d, unsigned int on)
-{
- if (on)
- PWER |= GPIO11_27_MASK(d->irq);
- else
- PWER &= ~GPIO11_27_MASK(d->irq);
- return 0;
-}
-
static struct irq_chip sa1100_high_gpio_chip = {
.name = "GPIO-h",
- .irq_ack = sa1100_high_gpio_ack,
+ .irq_ack = sa1100_gpio_ack,
.irq_mask = sa1100_high_gpio_mask,
.irq_unmask = sa1100_high_gpio_unmask,
.irq_set_type = sa1100_gpio_type,
- .irq_set_wake = sa1100_high_gpio_wake,
+ .irq_set_wake = sa1100_gpio_wake,
};
-/*
- * We don't need to ACK IRQs on the SA1100 unless they're GPIOs
- * this is for internal IRQs i.e. from 11 to 31.
- */
-static void sa1100_mask_irq(struct irq_data *d)
-{
- ICMR &= ~(1 << d->irq);
-}
-
-static void sa1100_unmask_irq(struct irq_data *d)
+static int sa1100_high_gpio_irqdomain_map(struct irq_domain *d,
+ unsigned int irq, irq_hw_number_t hwirq)
{
- ICMR |= (1 << d->irq);
-}
+ irq_set_chip_and_handler(irq, &sa1100_high_gpio_chip,
+ handle_edge_irq);
+ set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
-/*
- * Apart form GPIOs, only the RTC alarm can be a wakeup event.
- */
-static int sa1100_set_wake(struct irq_data *d, unsigned int on)
-{
- if (d->irq == IRQ_RTCAlrm) {
- if (on)
- PWER |= PWER_RTC;
- else
- PWER &= ~PWER_RTC;
- return 0;
- }
- return -EINVAL;
+ return 0;
}
-static struct irq_chip sa1100_normal_chip = {
- .name = "SC",
- .irq_ack = sa1100_mask_irq,
- .irq_mask = sa1100_mask_irq,
- .irq_unmask = sa1100_unmask_irq,
- .irq_set_wake = sa1100_set_wake,
+static struct irq_domain_ops sa1100_high_gpio_irqdomain_ops = {
+ .map = sa1100_high_gpio_irqdomain_map,
+ .xlate = irq_domain_xlate_onetwocell,
};
+static struct irq_domain *sa1100_high_gpio_irqdomain;
+
static struct resource irq_resource =
DEFINE_RES_MEM_NAMED(0x90050000, SZ_64K, "irqs");
@@ -291,10 +312,25 @@ static int __init sa1100irq_init_devicefs(void)
device_initcall(sa1100irq_init_devicefs);
-void __init sa1100_init_irq(void)
+static asmlinkage void __exception_irq_entry
+sa1100_handle_irq(struct pt_regs *regs)
{
- unsigned int irq;
+ uint32_t icip, icmr, mask;
+
+ do {
+ icip = (ICIP);
+ icmr = (ICMR);
+ mask = icip & icmr;
+
+ if (mask == 0)
+ break;
+
+ handle_IRQ(ffs(mask) - 1 + IRQ_GPIO0, regs);
+ } while (1);
+}
+void __init sa1100_init_irq(void)
+{
request_resource(&iomem_resource, &irq_resource);
/* disable all IRQs */
@@ -314,29 +350,24 @@ void __init sa1100_init_irq(void)
*/
ICCR = 1;
- for (irq = 0; irq <= 10; irq++) {
- irq_set_chip_and_handler(irq, &sa1100_low_gpio_chip,
- handle_edge_irq);
- set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
- }
+ sa1100_low_gpio_irqdomain = irq_domain_add_legacy(NULL,
+ 11, IRQ_GPIO0, 0,
+ &sa1100_low_gpio_irqdomain_ops, NULL);
- for (irq = 12; irq <= 31; irq++) {
- irq_set_chip_and_handler(irq, &sa1100_normal_chip,
- handle_level_irq);
- set_irq_flags(irq, IRQF_VALID);
- }
+ sa1100_normal_irqdomain = irq_domain_add_legacy(NULL,
+ 21, IRQ_GPIO11_27, 11,
+ &sa1100_normal_irqdomain_ops, NULL);
- for (irq = 32; irq <= 48; irq++) {
- irq_set_chip_and_handler(irq, &sa1100_high_gpio_chip,
- handle_edge_irq);
- set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
- }
+ sa1100_high_gpio_irqdomain = irq_domain_add_legacy(NULL,
+ 17, IRQ_GPIO11, 11,
+ &sa1100_high_gpio_irqdomain_ops, NULL);
/*
* Install handler for GPIO 11-27 edge detect interrupts
*/
- irq_set_chip(IRQ_GPIO11_27, &sa1100_normal_chip);
irq_set_chained_handler(IRQ_GPIO11_27, sa1100_high_gpio_handler);
+ set_handle_irq(sa1100_handle_irq);
+
sa1100_init_gpio();
}
diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig
index ae69809a9e47..7eb94e6fc376 100644
--- a/arch/arm/mm/Kconfig
+++ b/arch/arm/mm/Kconfig
@@ -798,6 +798,7 @@ config NEED_KUSER_HELPERS
config KUSER_HELPERS
bool "Enable kuser helpers in vector page" if !NEED_KUSER_HELPERS
+ depends on MMU
default y
help
Warning: disabling this option may break user programs.
diff --git a/arch/arm/mm/cache-l2x0.c b/arch/arm/mm/cache-l2x0.c
index 55f9d6e0cc88..5e65ca8dea62 100644
--- a/arch/arm/mm/cache-l2x0.c
+++ b/arch/arm/mm/cache-l2x0.c
@@ -956,7 +956,7 @@ static u32 cache_id_part_number_from_dt;
* @associativity: variable to return the calculated associativity in
* @max_way_size: the maximum size in bytes for the cache ways
*/
-static void __init l2x0_cache_size_of_parse(const struct device_node *np,
+static int __init l2x0_cache_size_of_parse(const struct device_node *np,
u32 *aux_val, u32 *aux_mask,
u32 *associativity,
u32 max_way_size)
@@ -974,7 +974,7 @@ static void __init l2x0_cache_size_of_parse(const struct device_node *np,
of_property_read_u32(np, "cache-line-size", &line_size);
if (!cache_size || !sets)
- return;
+ return -ENODEV;
/* All these l2 caches have the same line = block size actually */
if (!line_size) {
@@ -1009,7 +1009,7 @@ static void __init l2x0_cache_size_of_parse(const struct device_node *np,
if (way_size > max_way_size) {
pr_err("L2C OF: set size %dKB is too large\n", way_size);
- return;
+ return -EINVAL;
}
pr_info("L2C OF: override cache size: %d bytes (%dKB)\n",
@@ -1027,7 +1027,7 @@ static void __init l2x0_cache_size_of_parse(const struct device_node *np,
if (way_size_bits < 1 || way_size_bits > 6) {
pr_err("L2C OF: cache way size illegal: %dKB is not mapped\n",
way_size);
- return;
+ return -EINVAL;
}
mask |= L2C_AUX_CTRL_WAY_SIZE_MASK;
@@ -1036,6 +1036,8 @@ static void __init l2x0_cache_size_of_parse(const struct device_node *np,
*aux_val &= ~mask;
*aux_val |= val;
*aux_mask &= ~mask;
+
+ return 0;
}
static void __init l2x0_of_parse(const struct device_node *np,
@@ -1046,6 +1048,7 @@ static void __init l2x0_of_parse(const struct device_node *np,
u32 dirty = 0;
u32 val = 0, mask = 0;
u32 assoc;
+ int ret;
of_property_read_u32(np, "arm,tag-latency", &tag);
if (tag) {
@@ -1068,7 +1071,10 @@ static void __init l2x0_of_parse(const struct device_node *np,
val |= (dirty - 1) << L2X0_AUX_CTRL_DIRTY_LATENCY_SHIFT;
}
- l2x0_cache_size_of_parse(np, aux_val, aux_mask, &assoc, SZ_256K);
+ ret = l2x0_cache_size_of_parse(np, aux_val, aux_mask, &assoc, SZ_256K);
+ if (ret)
+ return;
+
if (assoc > 8) {
pr_err("l2x0 of: cache setting yield too high associativity\n");
pr_err("l2x0 of: %d calculated, max 8\n", assoc);
@@ -1125,6 +1131,7 @@ static void __init l2c310_of_parse(const struct device_node *np,
u32 tag[3] = { 0, 0, 0 };
u32 filter[2] = { 0, 0 };
u32 assoc;
+ int ret;
of_property_read_u32_array(np, "arm,tag-latency", tag, ARRAY_SIZE(tag));
if (tag[0] && tag[1] && tag[2])
@@ -1152,7 +1159,10 @@ static void __init l2c310_of_parse(const struct device_node *np,
l2x0_base + L310_ADDR_FILTER_START);
}
- l2x0_cache_size_of_parse(np, aux_val, aux_mask, &assoc, SZ_512K);
+ ret = l2x0_cache_size_of_parse(np, aux_val, aux_mask, &assoc, SZ_512K);
+ if (ret)
+ return;
+
switch (assoc) {
case 16:
*aux_val &= ~L2X0_AUX_CTRL_ASSOC_MASK;
@@ -1164,8 +1174,8 @@ static void __init l2c310_of_parse(const struct device_node *np,
*aux_mask &= ~L2X0_AUX_CTRL_ASSOC_MASK;
break;
default:
- pr_err("PL310 OF: cache setting yield illegal associativity\n");
- pr_err("PL310 OF: %d calculated, only 8 and 16 legal\n", assoc);
+ pr_err("L2C-310 OF cache associativity %d invalid, only 8 or 16 permitted\n",
+ assoc);
break;
}
}
diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
index c245d903927f..e8907117861e 100644
--- a/arch/arm/mm/dma-mapping.c
+++ b/arch/arm/mm/dma-mapping.c
@@ -1198,7 +1198,6 @@ __iommu_alloc_remap(struct page **pages, size_t size, gfp_t gfp, pgprot_t prot,
{
return dma_common_pages_remap(pages, size,
VM_ARM_DMA_CONSISTENT | VM_USERMAP, prot, caller);
- return NULL;
}
/*
diff --git a/arch/arm/mm/highmem.c b/arch/arm/mm/highmem.c
index 45aeaaca9052..e17ed00828d7 100644
--- a/arch/arm/mm/highmem.c
+++ b/arch/arm/mm/highmem.c
@@ -127,8 +127,11 @@ void *kmap_atomic_pfn(unsigned long pfn)
{
unsigned long vaddr;
int idx, type;
+ struct page *page = pfn_to_page(pfn);
pagefault_disable();
+ if (!PageHighMem(page))
+ return page_address(page);
type = kmap_atomic_idx_push();
idx = type + KM_TYPE_NR * smp_processor_id();
diff --git a/arch/arm/mm/proc-v7.S b/arch/arm/mm/proc-v7.S
index 6c33eaf879ae..8b4ee5e81c14 100644
--- a/arch/arm/mm/proc-v7.S
+++ b/arch/arm/mm/proc-v7.S
@@ -270,7 +270,6 @@ __v7_pj4b_setup:
/* Auxiliary Debug Modes Control 1 Register */
#define PJ4B_STATIC_BP (1 << 2) /* Enable Static BP */
#define PJ4B_INTER_PARITY (1 << 8) /* Disable Internal Parity Handling */
-#define PJ4B_BCK_OFF_STREX (1 << 5) /* Enable the back off of STREX instr */
#define PJ4B_CLEAN_LINE (1 << 16) /* Disable data transfer for clean line */
/* Auxiliary Debug Modes Control 2 Register */
@@ -293,7 +292,6 @@ __v7_pj4b_setup:
/* Auxiliary Debug Modes Control 1 Register */
mrc p15, 1, r0, c15, c1, 1
orr r0, r0, #PJ4B_CLEAN_LINE
- orr r0, r0, #PJ4B_BCK_OFF_STREX
orr r0, r0, #PJ4B_INTER_PARITY
bic r0, r0, #PJ4B_STATIC_BP
mcr p15, 1, r0, c15, c1, 1
diff --git a/arch/arm/mm/proc-xscale.S b/arch/arm/mm/proc-xscale.S
index 23259f104c66..afa2b3c4df4a 100644
--- a/arch/arm/mm/proc-xscale.S
+++ b/arch/arm/mm/proc-xscale.S
@@ -535,7 +535,7 @@ ENTRY(cpu_xscale_do_suspend)
mrc p15, 0, r5, c15, c1, 0 @ CP access reg
mrc p15, 0, r6, c13, c0, 0 @ PID
mrc p15, 0, r7, c3, c0, 0 @ domain ID
- mrc p15, 0, r8, c1, c1, 0 @ auxiliary control reg
+ mrc p15, 0, r8, c1, c0, 1 @ auxiliary control reg
mrc p15, 0, r9, c1, c0, 0 @ control reg
bic r4, r4, #2 @ clear frequency change bit
stmia r0, {r4 - r9} @ store cp regs
@@ -552,7 +552,7 @@ ENTRY(cpu_xscale_do_resume)
mcr p15, 0, r6, c13, c0, 0 @ PID
mcr p15, 0, r7, c3, c0, 0 @ domain ID
mcr p15, 0, r1, c2, c0, 0 @ translation table base addr
- mcr p15, 0, r8, c1, c1, 0 @ auxiliary control reg
+ mcr p15, 0, r8, c1, c0, 1 @ auxiliary control reg
mov r0, r9 @ control register
b cpu_resume_mmu
ENDPROC(cpu_xscale_do_resume)
diff --git a/drivers/amba/bus.c b/drivers/amba/bus.c
index 47bbdc1b5be3..f8e3bb44938e 100644
--- a/drivers/amba/bus.c
+++ b/drivers/amba/bus.c
@@ -95,8 +95,12 @@ static int amba_pm_runtime_suspend(struct device *dev)
struct amba_device *pcdev = to_amba_device(dev);
int ret = pm_generic_runtime_suspend(dev);
- if (ret == 0 && dev->driver)
- clk_disable_unprepare(pcdev->pclk);
+ if (ret == 0 && dev->driver) {
+ if (pm_runtime_is_irq_safe(dev))
+ clk_disable(pcdev->pclk);
+ else
+ clk_disable_unprepare(pcdev->pclk);
+ }
return ret;
}
@@ -107,7 +111,10 @@ static int amba_pm_runtime_resume(struct device *dev)
int ret;
if (dev->driver) {
- ret = clk_prepare_enable(pcdev->pclk);
+ if (pm_runtime_is_irq_safe(dev))
+ ret = clk_enable(pcdev->pclk);
+ else
+ ret = clk_prepare_enable(pcdev->pclk);
/* Failure is probably fatal to the system, but... */
if (ret)
return ret;
@@ -115,7 +122,7 @@ static int amba_pm_runtime_resume(struct device *dev)
return pm_generic_runtime_resume(dev);
}
-#endif
+#endif /* CONFIG_PM */
static const struct dev_pm_ops amba_pm = {
.suspend = pm_generic_suspend,
diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c
index 4839bfa74a10..2d324f780719 100644
--- a/drivers/dma/pl330.c
+++ b/drivers/dma/pl330.c
@@ -27,6 +27,7 @@
#include <linux/of.h>
#include <linux/of_dma.h>
#include <linux/err.h>
+#include <linux/pm_runtime.h>
#include "dmaengine.h"
#define PL330_MAX_CHAN 8
@@ -265,6 +266,9 @@ static unsigned cmd_line;
#define NR_DEFAULT_DESC 16
+/* Delay for runtime PM autosuspend, ms */
+#define PL330_AUTOSUSPEND_DELAY 20
+
/* Populated by the PL330 core driver for DMA API driver's info */
struct pl330_config {
u32 periph_id;
@@ -1958,6 +1962,7 @@ static void pl330_tasklet(unsigned long data)
struct dma_pl330_chan *pch = (struct dma_pl330_chan *)data;
struct dma_pl330_desc *desc, *_dt;
unsigned long flags;
+ bool power_down = false;
spin_lock_irqsave(&pch->lock, flags);
@@ -1972,10 +1977,17 @@ static void pl330_tasklet(unsigned long data)
/* Try to submit a req imm. next to the last completed cookie */
fill_queue(pch);
- /* Make sure the PL330 Channel thread is active */
- spin_lock(&pch->thread->dmac->lock);
- _start(pch->thread);
- spin_unlock(&pch->thread->dmac->lock);
+ if (list_empty(&pch->work_list)) {
+ spin_lock(&pch->thread->dmac->lock);
+ _stop(pch->thread);
+ spin_unlock(&pch->thread->dmac->lock);
+ power_down = true;
+ } else {
+ /* Make sure the PL330 Channel thread is active */
+ spin_lock(&pch->thread->dmac->lock);
+ _start(pch->thread);
+ spin_unlock(&pch->thread->dmac->lock);
+ }
while (!list_empty(&pch->completed_list)) {
dma_async_tx_callback callback;
@@ -1990,6 +2002,12 @@ static void pl330_tasklet(unsigned long data)
if (pch->cyclic) {
desc->status = PREP;
list_move_tail(&desc->node, &pch->work_list);
+ if (power_down) {
+ spin_lock(&pch->thread->dmac->lock);
+ _start(pch->thread);
+ spin_unlock(&pch->thread->dmac->lock);
+ power_down = false;
+ }
} else {
desc->status = FREE;
list_move_tail(&desc->node, &pch->dmac->desc_pool);
@@ -2004,6 +2022,12 @@ static void pl330_tasklet(unsigned long data)
}
}
spin_unlock_irqrestore(&pch->lock, flags);
+
+ /* If work list empty, power down */
+ if (power_down) {
+ pm_runtime_mark_last_busy(pch->dmac->ddma.dev);
+ pm_runtime_put_autosuspend(pch->dmac->ddma.dev);
+ }
}
bool pl330_filter(struct dma_chan *chan, void *param)
@@ -2073,6 +2097,7 @@ static int pl330_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd, unsigned
switch (cmd) {
case DMA_TERMINATE_ALL:
+ pm_runtime_get_sync(pl330->ddma.dev);
spin_lock_irqsave(&pch->lock, flags);
spin_lock(&pl330->lock);
@@ -2099,10 +2124,15 @@ static int pl330_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd, unsigned
dma_cookie_complete(&desc->txd);
}
+ if (!list_empty(&pch->work_list))
+ pm_runtime_put(pl330->ddma.dev);
+
list_splice_tail_init(&pch->submitted_list, &pl330->desc_pool);
list_splice_tail_init(&pch->work_list, &pl330->desc_pool);
list_splice_tail_init(&pch->completed_list, &pl330->desc_pool);
spin_unlock_irqrestore(&pch->lock, flags);
+ pm_runtime_mark_last_busy(pl330->ddma.dev);
+ pm_runtime_put_autosuspend(pl330->ddma.dev);
break;
case DMA_SLAVE_CONFIG:
slave_config = (struct dma_slave_config *)arg;
@@ -2138,6 +2168,7 @@ static void pl330_free_chan_resources(struct dma_chan *chan)
tasklet_kill(&pch->task);
+ pm_runtime_get_sync(pch->dmac->ddma.dev);
spin_lock_irqsave(&pch->lock, flags);
pl330_release_channel(pch->thread);
@@ -2147,6 +2178,8 @@ static void pl330_free_chan_resources(struct dma_chan *chan)
list_splice_tail_init(&pch->work_list, &pch->dmac->desc_pool);
spin_unlock_irqrestore(&pch->lock, flags);
+ pm_runtime_mark_last_busy(pch->dmac->ddma.dev);
+ pm_runtime_put_autosuspend(pch->dmac->ddma.dev);
}
static enum dma_status
@@ -2162,6 +2195,15 @@ static void pl330_issue_pending(struct dma_chan *chan)
unsigned long flags;
spin_lock_irqsave(&pch->lock, flags);
+ if (list_empty(&pch->work_list)) {
+ /*
+ * Warn on nothing pending. Empty submitted_list may
+ * break our pm_runtime usage counter as it is
+ * updated on work_list emptiness status.
+ */
+ WARN_ON(list_empty(&pch->submitted_list));
+ pm_runtime_get_sync(pch->dmac->ddma.dev);
+ }
list_splice_tail_init(&pch->submitted_list, &pch->work_list);
spin_unlock_irqrestore(&pch->lock, flags);
@@ -2585,6 +2627,46 @@ static int pl330_dma_device_slave_caps(struct dma_chan *dchan,
return 0;
}
+/*
+ * Runtime PM callbacks are provided by amba/bus.c driver.
+ *
+ * It is assumed here that IRQ safe runtime PM is chosen in probe and amba
+ * bus driver will only disable/enable the clock in runtime PM callbacks.
+ */
+static int __maybe_unused pl330_suspend(struct device *dev)
+{
+ struct amba_device *pcdev = to_amba_device(dev);
+
+ pm_runtime_disable(dev);
+
+ if (!pm_runtime_status_suspended(dev)) {
+ /* amba did not disable the clock */
+ amba_pclk_disable(pcdev);
+ }
+ amba_pclk_unprepare(pcdev);
+
+ return 0;
+}
+
+static int __maybe_unused pl330_resume(struct device *dev)
+{
+ struct amba_device *pcdev = to_amba_device(dev);
+ int ret;
+
+ ret = amba_pclk_prepare(pcdev);
+ if (ret)
+ return ret;
+
+ if (!pm_runtime_status_suspended(dev))
+ ret = amba_pclk_enable(pcdev);
+
+ pm_runtime_enable(dev);
+
+ return ret;
+}
+
+static SIMPLE_DEV_PM_OPS(pl330_pm, pl330_suspend, pl330_resume);
+
static int
pl330_probe(struct amba_device *adev, const struct amba_id *id)
{
@@ -2738,6 +2820,12 @@ pl330_probe(struct amba_device *adev, const struct amba_id *id)
pcfg->data_buf_dep, pcfg->data_bus_width / 8, pcfg->num_chan,
pcfg->num_peri, pcfg->num_events);
+ pm_runtime_irq_safe(&adev->dev);
+ pm_runtime_use_autosuspend(&adev->dev);
+ pm_runtime_set_autosuspend_delay(&adev->dev, PL330_AUTOSUSPEND_DELAY);
+ pm_runtime_mark_last_busy(&adev->dev);
+ pm_runtime_put_autosuspend(&adev->dev);
+
return 0;
probe_err3:
/* Idle the DMAC */
@@ -2764,6 +2852,8 @@ static int pl330_remove(struct amba_device *adev)
struct pl330_dmac *pl330 = amba_get_drvdata(adev);
struct dma_pl330_chan *pch, *_p;
+ pm_runtime_get_noresume(pl330->ddma.dev);
+
if (adev->dev.of_node)
of_dma_controller_free(adev->dev.of_node);
@@ -2802,6 +2892,7 @@ static struct amba_driver pl330_driver = {
.drv = {
.owner = THIS_MODULE,
.name = "dma-pl330",
+ .pm = &pl330_pm,
},
.id_table = pl330_ids,
.probe = pl330_probe,
diff --git a/drivers/pcmcia/sa1100_generic.c b/drivers/pcmcia/sa1100_generic.c
index ff8a027a4afb..d2ab06048169 100644
--- a/drivers/pcmcia/sa1100_generic.c
+++ b/drivers/pcmcia/sa1100_generic.c
@@ -93,6 +93,7 @@ static int sa11x0_drv_pcmcia_remove(struct platform_device *dev)
for (i = 0; i < sinfo->nskt; i++)
soc_pcmcia_remove_one(&sinfo->skt[i]);
+ clk_put(sinfo->clk);
kfree(sinfo);
return 0;
}
diff --git a/drivers/pcmcia/sa1111_generic.c b/drivers/pcmcia/sa1111_generic.c
index 65b02c3e14ce..7bae7e549d8b 100644
--- a/drivers/pcmcia/sa1111_generic.c
+++ b/drivers/pcmcia/sa1111_generic.c
@@ -145,6 +145,12 @@ int sa1111_pcmcia_add(struct sa1111_dev *dev, struct pcmcia_low_level *ops,
return -ENOMEM;
s->soc.nr = ops->first + i;
+ s->soc.clk = clk_get(&dev->dev, NULL);
+ if (IS_ERR(s->soc.clk)) {
+ ret = PTR_ERR(s->soc.clk);
+ kfree(s);
+ return ret;
+ }
soc_pcmcia_init_one(&s->soc, ops, &dev->dev);
s->dev = dev;
if (s->soc.nr) {
@@ -220,6 +226,7 @@ static int pcmcia_remove(struct sa1111_dev *dev)
for (; s; s = next) {
next = s->next;
soc_pcmcia_remove_one(&s->soc);
+ clk_put(s->soc.clk);
kfree(s);
}
diff --git a/drivers/pcmcia/sa11xx_base.c b/drivers/pcmcia/sa11xx_base.c
index 54d3089d157b..cf6de2c2b329 100644
--- a/drivers/pcmcia/sa11xx_base.c
+++ b/drivers/pcmcia/sa11xx_base.c
@@ -135,14 +135,16 @@ sa1100_pcmcia_frequency_change(struct soc_pcmcia_socket *skt,
static int
sa1100_pcmcia_set_timing(struct soc_pcmcia_socket *skt)
{
- return sa1100_pcmcia_set_mecr(skt, cpufreq_get(0));
+ unsigned long clk = clk_get_rate(skt->clk);
+
+ return sa1100_pcmcia_set_mecr(skt, clk / 1000);
}
static int
sa1100_pcmcia_show_timing(struct soc_pcmcia_socket *skt, char *buf)
{
struct soc_pcmcia_timing timing;
- unsigned int clock = cpufreq_get(0);
+ unsigned int clock = clk_get_rate(skt->clk);
unsigned long mecr = MECR;
char *p = buf;
@@ -218,6 +220,11 @@ int sa11xx_drv_pcmcia_probe(struct device *dev, struct pcmcia_low_level *ops,
struct skt_dev_info *sinfo;
struct soc_pcmcia_socket *skt;
int i, ret = 0;
+ struct clk *clk;
+
+ clk = clk_get(dev, NULL);
+ if (IS_ERR(clk))
+ return PTR_ERR(clk);
sa11xx_drv_pcmcia_ops(ops);
@@ -226,12 +233,14 @@ int sa11xx_drv_pcmcia_probe(struct device *dev, struct pcmcia_low_level *ops,
return -ENOMEM;
sinfo->nskt = nr;
+ sinfo->clk = clk;
/* Initialize processor specific parameters */
for (i = 0; i < nr; i++) {
skt = &sinfo->skt[i];
skt->nr = first + i;
+ skt->clk = clk;
soc_pcmcia_init_one(skt, ops, dev);
ret = sa11xx_drv_pcmcia_add_one(skt);
@@ -242,6 +251,7 @@ int sa11xx_drv_pcmcia_probe(struct device *dev, struct pcmcia_low_level *ops,
if (ret) {
while (--i >= 0)
soc_pcmcia_remove_one(&sinfo->skt[i]);
+ clk_put(clk);
kfree(sinfo);
} else {
dev_set_drvdata(dev, sinfo);
diff --git a/drivers/pcmcia/soc_common.c b/drivers/pcmcia/soc_common.c
index a2bc6ee1702e..933f4657515b 100644
--- a/drivers/pcmcia/soc_common.c
+++ b/drivers/pcmcia/soc_common.c
@@ -120,6 +120,8 @@ static void __soc_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt,
if (skt->ops->hw_shutdown)
skt->ops->hw_shutdown(skt);
+
+ clk_disable_unprepare(skt->clk);
}
static void soc_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
@@ -131,6 +133,8 @@ static int soc_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
{
int ret = 0, i;
+ clk_prepare_enable(skt->clk);
+
if (skt->ops->hw_init) {
ret = skt->ops->hw_init(skt);
if (ret)
diff --git a/drivers/video/fbdev/sa1100fb.c b/drivers/video/fbdev/sa1100fb.c
index 9690216d38ff..c0abe276ee55 100644
--- a/drivers/video/fbdev/sa1100fb.c
+++ b/drivers/video/fbdev/sa1100fb.c
@@ -178,6 +178,7 @@
#include <linux/dma-mapping.h>
#include <linux/mutex.h>
#include <linux/io.h>
+#include <linux/clk.h>
#include <video/sa1100fb.h>
@@ -416,9 +417,9 @@ sa1100fb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
var->transp.offset);
#ifdef CONFIG_CPU_FREQ
- dev_dbg(fbi->dev, "dma period = %d ps, clock = %d kHz\n",
+ dev_dbg(fbi->dev, "dma period = %d ps, clock = %ld kHz\n",
sa1100fb_display_dma_period(var),
- cpufreq_get(smp_processor_id()));
+ clk_get_rate(fbi->clk) / 1000);
#endif
return 0;
@@ -592,9 +593,10 @@ static struct fb_ops sa1100fb_ops = {
* Calculate the PCD value from the clock rate (in picoseconds).
* We take account of the PPCR clock setting.
*/
-static inline unsigned int get_pcd(unsigned int pixclock, unsigned int cpuclock)
+static inline unsigned int get_pcd(struct sa1100fb_info *fbi,
+ unsigned int pixclock)
{
- unsigned int pcd = cpuclock / 100;
+ unsigned int pcd = clk_get_rate(fbi->clk) / 100 / 1000;
pcd *= pixclock;
pcd /= 10000000;
@@ -673,7 +675,7 @@ static int sa1100fb_activate_var(struct fb_var_screeninfo *var, struct sa1100fb_
LCCR2_BegFrmDel(var->upper_margin) +
LCCR2_EndFrmDel(var->lower_margin);
- pcd = get_pcd(var->pixclock, cpufreq_get(0));
+ pcd = get_pcd(fbi, var->pixclock);
new_regs.lccr3 = LCCR3_PixClkDiv(pcd) | fbi->inf->lccr3 |
(var->sync & FB_SYNC_HOR_HIGH_ACT ? LCCR3_HorSnchH : LCCR3_HorSnchL) |
(var->sync & FB_SYNC_VERT_HIGH_ACT ? LCCR3_VrtSnchH : LCCR3_VrtSnchL);
@@ -787,6 +789,9 @@ static void sa1100fb_enable_controller(struct sa1100fb_info *fbi)
fbi->palette_cpu[0] &= 0xcfff;
fbi->palette_cpu[0] |= palette_pbs(&fbi->fb.var);
+ /* enable LCD controller clock */
+ clk_prepare_enable(fbi->clk);
+
/* Sequence from 11.7.10 */
writel_relaxed(fbi->reg_lccr3, fbi->base + LCCR3);
writel_relaxed(fbi->reg_lccr2, fbi->base + LCCR2);
@@ -831,6 +836,9 @@ static void sa1100fb_disable_controller(struct sa1100fb_info *fbi)
schedule_timeout(20 * HZ / 1000);
remove_wait_queue(&fbi->ctrlr_wait, &wait);
+
+ /* disable LCD controller clock */
+ clk_disable_unprepare(fbi->clk);
}
/*
@@ -1009,7 +1017,6 @@ sa1100fb_freq_transition(struct notifier_block *nb, unsigned long val,
void *data)
{
struct sa1100fb_info *fbi = TO_INF(nb, freq_transition);
- struct cpufreq_freqs *f = data;
u_int pcd;
switch (val) {
@@ -1018,7 +1025,7 @@ sa1100fb_freq_transition(struct notifier_block *nb, unsigned long val,
break;
case CPUFREQ_POSTCHANGE:
- pcd = get_pcd(fbi->fb.var.pixclock, f->new);
+ pcd = get_pcd(fbi, fbi->fb.var.pixclock);
fbi->reg_lccr3 = (fbi->reg_lccr3 & ~0xff) | LCCR3_PixClkDiv(pcd);
set_ctrlr_state(fbi, C_ENABLE_CLKCHANGE);
break;
@@ -1225,6 +1232,13 @@ static int sa1100fb_probe(struct platform_device *pdev)
if (!fbi)
goto failed;
+ fbi->clk = clk_get(&pdev->dev, NULL);
+ if (IS_ERR(fbi->clk)) {
+ ret = PTR_ERR(fbi->clk);
+ fbi->clk = NULL;
+ goto failed;
+ }
+
fbi->base = ioremap(res->start, resource_size(res));
if (!fbi->base)
goto failed;
@@ -1277,6 +1291,8 @@ static int sa1100fb_probe(struct platform_device *pdev)
failed:
if (fbi)
iounmap(fbi->base);
+ if (fbi->clk)
+ clk_put(fbi->clk);
kfree(fbi);
release_mem_region(res->start, resource_size(res));
return ret;
diff --git a/drivers/video/fbdev/sa1100fb.h b/drivers/video/fbdev/sa1100fb.h
index fc5d4292fad6..0139d13377a5 100644
--- a/drivers/video/fbdev/sa1100fb.h
+++ b/drivers/video/fbdev/sa1100fb.h
@@ -68,6 +68,7 @@ struct sa1100fb_info {
#endif
const struct sa1100fb_mach_info *inf;
+ struct clk *clk;
};
#define TO_INF(ptr,member) container_of(ptr,struct sa1100fb_info,member)
diff --git a/include/linux/amba/bus.h b/include/linux/amba/bus.h
index c324f5700d1a..ac02f9bd63dc 100644
--- a/include/linux/amba/bus.h
+++ b/include/linux/amba/bus.h
@@ -97,6 +97,16 @@ void amba_release_regions(struct amba_device *);
#define amba_pclk_disable(d) \
do { if (!IS_ERR((d)->pclk)) clk_disable((d)->pclk); } while (0)
+static inline int amba_pclk_prepare(struct amba_device *dev)
+{
+ return clk_prepare(dev->pclk);
+}
+
+static inline void amba_pclk_unprepare(struct amba_device *dev)
+{
+ clk_unprepare(dev->pclk);
+}
+
/* Some drivers don't use the struct amba_device */
#define AMBA_CONFIG_BITS(a) (((a) >> 24) & 0xff)
#define AMBA_REV_BITS(a) (((a) >> 20) & 0x0f)
diff --git a/include/linux/pm_runtime.h b/include/linux/pm_runtime.h
index 367f49b9a1c9..44d74f0f182e 100644
--- a/include/linux/pm_runtime.h
+++ b/include/linux/pm_runtime.h
@@ -128,6 +128,11 @@ static inline void pm_runtime_mark_last_busy(struct device *dev)
ACCESS_ONCE(dev->power.last_busy) = jiffies;
}
+static inline bool pm_runtime_is_irq_safe(struct device *dev)
+{
+ return dev->power.irq_safe;
+}
+
#else /* !CONFIG_PM_RUNTIME */
static inline int __pm_runtime_idle(struct device *dev, int rpmflags)
@@ -167,6 +172,7 @@ static inline bool pm_runtime_enabled(struct device *dev) { return false; }
static inline void pm_runtime_no_callbacks(struct device *dev) {}
static inline void pm_runtime_irq_safe(struct device *dev) {}
+static inline bool pm_runtime_is_irq_safe(struct device *dev) { return false; }
static inline bool pm_runtime_callbacks_present(struct device *dev) { return false; }
static inline void pm_runtime_mark_last_busy(struct device *dev) {}
generated by cgit (git 2.34.1) at 2025-02-27 10:15:06 +0000