122 lines
3.9 KiB
Diff
122 lines
3.9 KiB
Diff
From d6c8d6b85864edd5bb616f9fda0d2e9c1f74de42 Mon Sep 17 00:00:00 2001
|
|
From: Holger Freyther <zecke@openmoko.org>
|
|
Date: Sun, 13 Apr 2008 07:25:54 +0100
|
|
Subject: [PATCH] Fix the firing of "Jack"-Interrupts after resume when the modem is powered on.
|
|
|
|
GTA02_GPIO_nDL_GSM defaults to high/1. On resume do not enable the DL_GSM if
|
|
it was not enabled before. This is stopping the storm of interrupts.
|
|
|
|
Fix the logic in the download file handling. Downloads are disabled (0) when
|
|
the GTA02_GPIO_nDL_GSM is high (1). To enable downloading set
|
|
GTA02_GPIO_nDL_GSM to low (0, !on). Disable the jack interrupt while download
|
|
the is active. When disabling download we will get a couple of jack interrupts
|
|
but this is hardly avoidable.
|
|
|
|
Avoid reading the GPIO value if we do not even have a console set.
|
|
|
|
Signed-Off-by: Holger Freyther <zecke@openmoko.org>
|
|
---
|
|
arch/arm/plat-s3c24xx/neo1973_pm_gsm.c | 35 +++++++++++++++++++++++--------
|
|
1 files changed, 26 insertions(+), 9 deletions(-)
|
|
|
|
diff --git a/arch/arm/plat-s3c24xx/neo1973_pm_gsm.c b/arch/arm/plat-s3c24xx/neo1973_pm_gsm.c
|
|
index 1123d7d..b4ea8ba 100644
|
|
--- a/arch/arm/plat-s3c24xx/neo1973_pm_gsm.c
|
|
+++ b/arch/arm/plat-s3c24xx/neo1973_pm_gsm.c
|
|
@@ -17,8 +17,9 @@
|
|
#include <linux/platform_device.h>
|
|
#include <linux/console.h>
|
|
#include <linux/errno.h>
|
|
+#include <linux/interrupt.h>
|
|
|
|
-#include <asm/hardware.h>
|
|
+#include <asm/gpio.h>
|
|
#include <asm/mach-types.h>
|
|
#include <asm/arch/gta01.h>
|
|
|
|
@@ -30,6 +31,7 @@
|
|
|
|
struct gta01pm_priv {
|
|
int gpio_ngsm_en;
|
|
+ int gpio_ndl_gsm;
|
|
struct console *con;
|
|
};
|
|
|
|
@@ -68,7 +70,7 @@ static ssize_t gsm_read(struct device *dev, struct device_attribute *attr,
|
|
#endif
|
|
#ifdef CONFIG_MACH_NEO1973_GTA02
|
|
if (machine_is_neo1973_gta02())
|
|
- if (s3c2410_gpio_getpin(GTA02_GPIO_nDL_GSM))
|
|
+ if (!s3c2410_gpio_getpin(GTA02_GPIO_nDL_GSM))
|
|
goto out_1;
|
|
#endif
|
|
}
|
|
@@ -143,8 +145,18 @@ static ssize_t gsm_write(struct device *dev, struct device_attribute *attr,
|
|
s3c2410_gpio_setpin(GTA01_GPIO_MODEM_DNLOAD, on);
|
|
#endif
|
|
#ifdef CONFIG_MACH_NEO1973_GTA02
|
|
- if (machine_is_neo1973_gta02())
|
|
- s3c2410_gpio_setpin(GTA02_GPIO_nDL_GSM, on);
|
|
+ if (machine_is_neo1973_gta02()) {
|
|
+ /* FIXME: Layering violation, we know how this relates to
|
|
+ * the Jack-IRQ. And we assume the keyboard driver to be
|
|
+ * around. */
|
|
+ if (on)
|
|
+ disable_irq(gpio_to_irq(GTA02_GPIO_JACK_INSERT));
|
|
+ else
|
|
+ enable_irq(gpio_to_irq(GTA02_GPIO_JACK_INSERT));
|
|
+
|
|
+ gta01_gsm.gpio_ndl_gsm = !on;
|
|
+ s3c2410_gpio_setpin(GTA02_GPIO_nDL_GSM, !on);
|
|
+ }
|
|
#endif
|
|
}
|
|
|
|
@@ -159,26 +171,29 @@ static DEVICE_ATTR(download, 0644, gsm_read, gsm_write);
|
|
static int gta01_gsm_suspend(struct platform_device *pdev, pm_message_t state)
|
|
{
|
|
/* GPIO state is saved/restored by S3C2410 core GPIO driver, so we
|
|
- * don't need to do anything here */
|
|
+ * don't need to do much here. */
|
|
+
|
|
|
|
- /* disable DL GSM to prevent jack_insert becoming floating */
|
|
+ /* disable DL GSM to prevent jack_insert becoming 'floating' */
|
|
if (machine_is_neo1973_gta02())
|
|
s3c2410_gpio_setpin(GTA02_GPIO_nDL_GSM, 1);
|
|
+
|
|
return 0;
|
|
}
|
|
|
|
static int gta01_gsm_resume(struct platform_device *pdev)
|
|
{
|
|
/* GPIO state is saved/restored by S3C2410 core GPIO driver, so we
|
|
- * don't need to do anything here */
|
|
+ * don't need to do much here. */
|
|
|
|
/* Make sure that the kernel console on the serial port is still
|
|
* disabled. FIXME: resume ordering race with serial driver! */
|
|
- if (s3c2410_gpio_getpin(GTA01_GPIO_MODEM_ON) && gta01_gsm.con)
|
|
+ if (gta01_gsm.con && s3c2410_gpio_getpin(GTA01_GPIO_MODEM_ON))
|
|
console_stop(gta01_gsm.con);
|
|
|
|
if (machine_is_neo1973_gta02())
|
|
- s3c2410_gpio_setpin(GTA02_GPIO_nDL_GSM, 0);
|
|
+ s3c2410_gpio_setpin(GTA02_GPIO_nDL_GSM, gta01_gsm.gpio_ndl_gsm);
|
|
+
|
|
return 0;
|
|
}
|
|
#else
|
|
@@ -248,6 +263,8 @@ static int __init gta01_gsm_probe(struct platform_device *pdev)
|
|
} else
|
|
gta01_gsm.con = NULL;
|
|
|
|
+ gta01_gsm.gpio_ndl_gsm = 1;
|
|
+
|
|
return sysfs_create_group(&pdev->dev.kobj, >a01_gsm_attr_group);
|
|
}
|
|
|
|
--
|
|
1.5.6.5
|
|
|