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Message-Id: <1309039804-659-4-git-send-email-bryan.wu@canonical.com>
Date: Sun, 26 Jun 2011 06:10:03 +0800
From: Bryan Wu <bryan.wu@...onical.com>
To: linus.walleij@...aro.org, linux-arm-kernel@...ts.infradead.org,
rpurdie@...ys.net, linux-kernel@...r.kernel.org
Subject: [PATCH 3/4] mach-realview: retire custom LED code
From: Linus Walleij <linus.walleij@...aro.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@...onical.com: use ledtrig-cpu instead of ledtrig-arm-cpu)
Cc: Richard Purdie <rpurdie@...ys.net>
Signed-off-by: Linus Walleij <linus.walleij@...aro.org>
Signed-off-by: Bryan Wu <bryan.wu@...onical.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/plat-versatile/Kconfig | 6 ++++-
arch/arm/plat-versatile/leds.c | 13 +++++++---
9 files changed, 14 insertions(+), 66 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 10e75fa..2fb438a 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 eab6070..2e0350a 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 b2985fc..9dd929a 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 fb68665..d1bcd5f 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 92ace2c..797a509 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/plat-versatile/Kconfig b/arch/arm/plat-versatile/Kconfig
index 52353be..c600420 100644
--- a/arch/arm/plat-versatile/Kconfig
+++ b/arch/arm/plat-versatile/Kconfig
@@ -7,8 +7,12 @@ config PLAT_VERSATILE_FPGA_IRQ
bool
config PLAT_VERSATILE_LEDS
- def_bool y if LEDS_CLASS
+ def_bool y
depends on ARCH_REALVIEW || ARCH_VERSATILE
+ select NEW_LEDS
+ select LEDS_CLASS
+ select LEDS_TRIGGERS
+ select LEDS_TRIGGER_CPU
config PLAT_VERSATILE_SCHED_CLOCK
def_bool y if !ARCH_INTEGRATOR_AP
diff --git a/arch/arm/plat-versatile/leds.c b/arch/arm/plat-versatile/leds.c
index 3169fa5..f0a5c1e 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", "cpu" },
+ { "versatile:3", "cpu" },
+ { "versatile:4", "cpu" },
+ { "versatile:5", "cpu" },
{ "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) {
--
1.7.4.1
--
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