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From b909cde86ea2b4327c5deac71756ee7a6bff89d6 Mon Sep 17 00:00:00 2001
From: Vasily Khoruzhick <anarsoul@gmail.com>
Date: Sat, 3 Dec 2011 12:12:21 +0300
Subject: [PATCH 07/15] ARM: s3c24xx: h1940: unlock reset button
Reset button can be left locked by bootloader and in case of kernel panic
user won't be able to reset a device by pressing reset button.
Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
---
arch/arm/mach-s3c24xx/mach-h1940.c | 17 +++++++++++++++--
1 file changed, 15 insertions(+), 2 deletions(-)
diff --git a/arch/arm/mach-s3c24xx/mach-h1940.c b/arch/arm/mach-s3c24xx/mach-h1940.c
index 0f2648c..55653e8 100644
--- a/arch/arm/mach-s3c24xx/mach-h1940.c
+++ b/arch/arm/mach-s3c24xx/mach-h1940.c
@@ -221,9 +221,9 @@ static struct s3c2410fb_mach_info h1940_fb_info __initdata = {
.gpcup = 0x0000ffff,
.gpcup_mask = 0xffffffff,
.gpdcon = 0xaa84aaa0,
- .gpdcon_mask = 0xffffffff,
+ .gpdcon_mask = 0xfffffff3,
.gpdup = 0x0000faff,
- .gpdup_mask = 0xffffffff,
+ .gpdup_mask = 0xfffffffd,
};
static int power_supply_init(struct device *dev)
@@ -798,6 +798,19 @@ static void __init h1940_init(void)
gpio_direction_output(S3C2410_GPA(7), 0);
gpio_direction_output(H1940_LATCH_LED_FLASH, 0);
+ gpio_request(S3C2410_GPD(1), "Reset sense");
+ gpio_request(S3C2410_GPA(14), "Reset reset");
+ gpio_request(S3C2410_GPB(6), "Reset lock");
+ gpio_direction_input(S3C2410_GPD(1));
+ gpio_direction_output(S3C2410_GPA(14), 0);
+ if (gpio_get_value(S3C2410_GPD(1)))
+ gpio_set_value(S3C2410_GPA(14), 0);
+
+ gpio_direction_output(S3C2410_GPA(14), 1);
+ mdelay(100);
+ gpio_direction_output(S3C2410_GPB(6), 1);
+ gpio_direction_output(S3C2410_GPB(6), 0);
+
i2c_register_board_info(0, h1940_i2c_devices,
ARRAY_SIZE(h1940_i2c_devices));
}
--
2.3.5
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