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Subject[PATCH 04/18] mach-realview and mach-versatile: retire custom LED code
Date
From: Linus Walleij <linus.walleij@linaro.org>

This replaces the custom LED trigger code in mach-realview with
some overarching platform code for the plat-versatile family that
will lock down LEDs 2 thru 5 for CPU activity indication. The
day we have 8 core ARM systems the plat-versatile code will have
to become more elaborate.

Tested on RealView PB11MPCore by invoking four different CPU
hogs (yes > /dev/null&) and see the LEDs go on one at a time.
They all go off as the hogs are killed. Tested on the PB1176
as well - just one activity led (led 2) goes on and off with
CPU activity.
(bryan.wu@canonical.com: use ledtrig-cpu instead of ledtrig-arm-cpu)

Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Bryan Wu <bryan.wu@canonical.com>
Acked-by: Pawel Moll <pawel.moll@arm.com>
---
arch/arm/mach-realview/core.c | 39 ---------------------------
arch/arm/mach-realview/core.h | 2 -
arch/arm/mach-realview/realview_eb.c | 4 ---
arch/arm/mach-realview/realview_pb1176.c | 4 ---
arch/arm/mach-realview/realview_pb11mp.c | 4 ---
arch/arm/mach-realview/realview_pba8.c | 4 ---
arch/arm/mach-realview/realview_pbx.c | 4 ---
arch/arm/mach-versatile/core.c | 42 ------------------------------
arch/arm/plat-versatile/Kconfig | 2 +-
arch/arm/plat-versatile/leds.c | 13 ++++++---
10 files changed, 10 insertions(+), 108 deletions(-)
diff --git a/arch/arm/mach-realview/core.c b/arch/arm/mach-realview/core.c
index 5c23450..3a12b6b 100644
--- a/arch/arm/mach-realview/core.c
+++ b/arch/arm/mach-realview/core.c
@@ -36,7 +36,6 @@
#include <asm/system.h>
#include <mach/hardware.h>
#include <asm/irq.h>
-#include <asm/leds.h>
#include <asm/mach-types.h>
#include <asm/hardware/arm_timer.h>
#include <asm/hardware/icst.h>
@@ -437,44 +436,6 @@ struct clcd_board clcd_plat_data = {
.remove = versatile_clcd_remove_dma,
};

-#ifdef CONFIG_LEDS
-#define VA_LEDS_BASE (__io_address(REALVIEW_SYS_BASE) + REALVIEW_SYS_LED_OFFSET)
-
-void realview_leds_event(led_event_t ledevt)
-{
- unsigned long flags;
- u32 val;
- u32 led = 1 << smp_processor_id();
-
- local_irq_save(flags);
- val = readl(VA_LEDS_BASE);
-
- switch (ledevt) {
- case led_idle_start:
- val = val & ~led;
- break;
-
- case led_idle_end:
- val = val | led;
- break;
-
- case led_timer:
- val = val ^ REALVIEW_SYS_LED7;
- break;
-
- case led_halted:
- val = 0;
- break;
-
- default:
- break;
- }
-
- writel(val, VA_LEDS_BASE);
- local_irq_restore(flags);
-}
-#endif /* CONFIG_LEDS */
-
/*
* Where is the timer (VA)?
*/
diff --git a/arch/arm/mach-realview/core.h b/arch/arm/mach-realview/core.h
index 5c83d1e..47ee3bc 100644
--- a/arch/arm/mach-realview/core.h
+++ b/arch/arm/mach-realview/core.h
@@ -26,7 +26,6 @@
#include <linux/io.h>

#include <asm/setup.h>
-#include <asm/leds.h>

#define AMBA_DEVICE(name,busid,base,plat) \
static struct amba_device name##_device = { \
@@ -57,7 +56,6 @@ extern void __iomem *timer1_va_base;
extern void __iomem *timer2_va_base;
extern void __iomem *timer3_va_base;

-extern void realview_leds_event(led_event_t ledevt);
extern void realview_timer_init(unsigned int timer_irq);
extern int realview_flash_register(struct resource *res, u32 num);
extern int realview_eth_register(const char *name, struct resource *res);
diff --git a/arch/arm/mach-realview/realview_eb.c b/arch/arm/mach-realview/realview_eb.c
index 7a4e3b1..8bdd783 100644
--- a/arch/arm/mach-realview/realview_eb.c
+++ b/arch/arm/mach-realview/realview_eb.c
@@ -30,7 +30,6 @@

#include <mach/hardware.h>
#include <asm/irq.h>
-#include <asm/leds.h>
#include <asm/mach-types.h>
#include <asm/pmu.h>
#include <asm/pgtable.h>
@@ -455,9 +454,6 @@ static void __init realview_eb_init(void)
amba_device_register(d, &iomem_resource);
}

-#ifdef CONFIG_LEDS
- leds_event = realview_leds_event;
-#endif
realview_reset = realview_eb_reset;
}

diff --git a/arch/arm/mach-realview/realview_pb1176.c b/arch/arm/mach-realview/realview_pb1176.c
index ad5671a..72bbe53 100644
--- a/arch/arm/mach-realview/realview_pb1176.c
+++ b/arch/arm/mach-realview/realview_pb1176.c
@@ -30,7 +30,6 @@

#include <mach/hardware.h>
#include <asm/irq.h>
-#include <asm/leds.h>
#include <asm/mach-types.h>
#include <asm/pmu.h>
#include <asm/pgtable.h>
@@ -350,9 +349,6 @@ static void __init realview_pb1176_init(void)
amba_device_register(d, &iomem_resource);
}

-#ifdef CONFIG_LEDS
- leds_event = realview_leds_event;
-#endif
realview_reset = realview_pb1176_reset;
}

diff --git a/arch/arm/mach-realview/realview_pb11mp.c b/arch/arm/mach-realview/realview_pb11mp.c
index b43644b..e6eeffc 100644
--- a/arch/arm/mach-realview/realview_pb11mp.c
+++ b/arch/arm/mach-realview/realview_pb11mp.c
@@ -30,7 +30,6 @@

#include <mach/hardware.h>
#include <asm/irq.h>
-#include <asm/leds.h>
#include <asm/mach-types.h>
#include <asm/pmu.h>
#include <asm/pgtable.h>
@@ -352,9 +351,6 @@ static void __init realview_pb11mp_init(void)
amba_device_register(d, &iomem_resource);
}

-#ifdef CONFIG_LEDS
- leds_event = realview_leds_event;
-#endif
realview_reset = realview_pb11mp_reset;
}

diff --git a/arch/arm/mach-realview/realview_pba8.c b/arch/arm/mach-realview/realview_pba8.c
index 763e8f3..f29c640 100644
--- a/arch/arm/mach-realview/realview_pba8.c
+++ b/arch/arm/mach-realview/realview_pba8.c
@@ -29,7 +29,6 @@
#include <linux/io.h>

#include <asm/irq.h>
-#include <asm/leds.h>
#include <asm/mach-types.h>
#include <asm/pmu.h>
#include <asm/pgtable.h>
@@ -302,9 +301,6 @@ static void __init realview_pba8_init(void)
amba_device_register(d, &iomem_resource);
}

-#ifdef CONFIG_LEDS
- leds_event = realview_leds_event;
-#endif
realview_reset = realview_pba8_reset;
}

diff --git a/arch/arm/mach-realview/realview_pbx.c b/arch/arm/mach-realview/realview_pbx.c
index 363b0ab..61d30fa 100644
--- a/arch/arm/mach-realview/realview_pbx.c
+++ b/arch/arm/mach-realview/realview_pbx.c
@@ -28,7 +28,6 @@
#include <linux/io.h>

#include <asm/irq.h>
-#include <asm/leds.h>
#include <asm/mach-types.h>
#include <asm/pmu.h>
#include <asm/smp_twd.h>
@@ -385,9 +384,6 @@ static void __init realview_pbx_init(void)
amba_device_register(d, &iomem_resource);
}

-#ifdef CONFIG_LEDS
- leds_event = realview_leds_event;
-#endif
realview_reset = realview_pbx_reset;
}

diff --git a/arch/arm/mach-versatile/core.c b/arch/arm/mach-versatile/core.c
index e340a54..24926f5 100644
--- a/arch/arm/mach-versatile/core.c
+++ b/arch/arm/mach-versatile/core.c
@@ -39,7 +39,6 @@

#include <asm/system.h>
#include <asm/irq.h>
-#include <asm/leds.h>
#include <asm/hardware/arm_timer.h>
#include <asm/hardware/icst.h>
#include <asm/hardware/vic.h>
@@ -708,43 +707,6 @@ struct of_dev_auxdata versatile_auxdata_lookup[] __initdata = {
};
#endif

-#ifdef CONFIG_LEDS
-#define VA_LEDS_BASE (__io_address(VERSATILE_SYS_BASE) + VERSATILE_SYS_LED_OFFSET)
-
-static void versatile_leds_event(led_event_t ledevt)
-{
- unsigned long flags;
- u32 val;
-
- local_irq_save(flags);
- val = readl(VA_LEDS_BASE);
-
- switch (ledevt) {
- case led_idle_start:
- val = val & ~VERSATILE_SYS_LED0;
- break;
-
- case led_idle_end:
- val = val | VERSATILE_SYS_LED0;
- break;
-
- case led_timer:
- val = val ^ VERSATILE_SYS_LED1;
- break;
-
- case led_halted:
- val = 0;
- break;
-
- default:
- break;
- }
-
- writel(val, VA_LEDS_BASE);
- local_irq_restore(flags);
-}
-#endif /* CONFIG_LEDS */
-
/* Early initializations */
void __init versatile_init_early(void)
{
@@ -769,10 +731,6 @@ void __init versatile_init(void)
struct amba_device *d = amba_devs[i];
amba_device_register(d, &iomem_resource);
}
-
-#ifdef CONFIG_LEDS
- leds_event = versatile_leds_event;
-#endif
}

/*
diff --git a/arch/arm/plat-versatile/Kconfig b/arch/arm/plat-versatile/Kconfig
index 52353be..bfcea07 100644
--- a/arch/arm/plat-versatile/Kconfig
+++ b/arch/arm/plat-versatile/Kconfig
@@ -7,7 +7,7 @@ config PLAT_VERSATILE_FPGA_IRQ
bool

config PLAT_VERSATILE_LEDS
- def_bool y if LEDS_CLASS
+ def_bool y if NEW_LEDS
depends on ARCH_REALVIEW || ARCH_VERSATILE

config PLAT_VERSATILE_SCHED_CLOCK
diff --git a/arch/arm/plat-versatile/leds.c b/arch/arm/plat-versatile/leds.c
index 3169fa5..50090c4 100644
--- a/arch/arm/plat-versatile/leds.c
+++ b/arch/arm/plat-versatile/leds.c
@@ -37,10 +37,10 @@ static const struct {
} versatile_leds[] = {
{ "versatile:0", "heartbeat", },
{ "versatile:1", "mmc0", },
- { "versatile:2", },
- { "versatile:3", },
- { "versatile:4", },
- { "versatile:5", },
+ { "versatile:2", "cpu0" },
+ { "versatile:3", "cpu1" },
+ { "versatile:4", "cpu2" },
+ { "versatile:5", "cpu3" },
{ "versatile:6", },
{ "versatile:7", },
};
@@ -85,6 +85,11 @@ static int __init versatile_leds_init(void)
led->cdev.brightness_set = versatile_led_set;
led->cdev.brightness_get = versatile_led_get;
led->cdev.default_trigger = versatile_leds[i].trigger;
+ /* Some trigger data for CPU LEDs */
+ if (i >= 2 && i <= 5) {
+ /* This is the CPU number actually */
+ led->cdev.trigger_data = (void *) i - 2;
+ }
led->mask = BIT(i);

if (led_classdev_register(NULL, &led->cdev) < 0) {
--
1.7.5


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