This patch extends the Amstrad Delta camera support with LEDS trigger that can
be used for automatic control of the on-board camera LED. The led turns on
automatically on camera device open and turns off on camera device close.
Created and tested against linux-2.6.36-rc3.
Works on top of patch 5/6, "OMAP1: Amstrad Delta: add support for on-board
camera"
Signed-off-by: Janusz Krzysztofik <jkrzyszt@xxxxxxxxxxxx>
---
Having no comments received on v1 of this patch, I assume nobody could see any
benefit if I implemented this idea at the SoC camera or OMAP1 camera level,
so I'm leaveing it as an Amstrad Delta only feature, as it originally was for
v1.
Thanks,
Janusz
v1->v2 changes:
- no functional changes,
- refreshed against linux-2.6.36-rc3.
arch/arm/mach-omap1/board-ams-delta.c | 24 ++++++++++++++++++++++++
1 file changed, 24 insertions(+)
diff -upr linux-2.6.36-rc3.orig/arch/arm/mach-omap1/board-ams-delta.c
linux-2.6.36-rc3/arch/arm/mach-omap1/board-ams-delta.c
--- linux-2.6.36-rc3.orig/arch/arm/mach-omap1/board-ams-delta.c 2010-09-10 22:01:24.000000000 +0200
+++ linux-2.6.36-rc3/arch/arm/mach-omap1/board-ams-delta.c 2010-09-10 22:08:29.000000000 +0200
@@ -16,6 +16,7 @@
#include <linux/init.h>
#include <linux/input.h>
#include <linux/interrupt.h>
+#include <linux/leds.h>
#include <linux/platform_device.h>
#include <linux/serial_8250.h>
@@ -222,11 +223,30 @@ static struct i2c_board_info ams_delta_c
},
};
+#ifdef CONFIG_LEDS_TRIGGERS
+DEFINE_LED_TRIGGER(ams_delta_camera_led_trigger);
+
+static int ams_delta_camera_power(struct device *dev, int power)
+{
+ /*
+ * turn on camera LED
+ */
+ if (power)
+ led_trigger_event(ams_delta_camera_led_trigger, LED_FULL);
+ else
+ led_trigger_event(ams_delta_camera_led_trigger, LED_OFF);
+ return 0;
+}
+#else
+#define ams_delta_camera_power NULL
+#endif
+
static struct soc_camera_link __initdata ams_delta_iclink = {
.bus_id = 0, /* OMAP1 SoC camera bus */
.i2c_adapter_id = 1,
.board_info = &ams_delta_camera_board_info[0],
.module_name = "ov6650",
+ .power = ams_delta_camera_power,
};
static struct platform_device ams_delta_camera_device = {
@@ -281,6 +301,10 @@ static void __init ams_delta_init(void)
omap1_usb_init(&ams_delta_usb_config);
omap1_set_camera_info(&ams_delta_camera_platform_data);
+#ifdef CONFIG_LEDS_TRIGGERS
+ led_trigger_register_simple("ams_delta_camera",
+ &ams_delta_camera_led_trigger);
+#endif
platform_add_devices(ams_delta_devices, ARRAY_SIZE(ams_delta_devices));
#ifdef CONFIG_AMS_DELTA_FIQ
--
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