From: Yegor Yefremov <yegor_sub1@visionsystems.de>
To: "linux-omap@vger.kernel.org" <linux-omap@vger.kernel.org>
Cc: "Mark A. Greer" <mgreer@animalcreek.com>,
"Porter, Matt" <mporter@ti.com>
Subject: omap: omap_mux_init_gpio() for gpio_0
Date: Mon, 23 Jul 2012 16:00:22 +0200 [thread overview]
Message-ID: <500D58F6.40807@visionsystems.de> (raw)
I've i2c gpio expander (pca953x) IRQ attached to pin SYS_NIRQ/GPIO_0 (am3517). How can I declare this pin as GPIO and later as IRQ?
if (!gpio)
return -EINVAL;
list_for_each_entry(e, muxmodes, node) {
struct omap_mux *m = &e->mux;
if (gpio == m->gpio) {
gpio_mux = m;
found++;
}
}
if (found == 0) {
pr_err("%s: Could not set gpio%i\n", __func__, gpio);
return -ENODEV;
}
if (found > 1) {
pr_info("%s: Multiple gpio paths (%d) for gpio%i\n", __func__,
found, gpio);
return -EINVAL;
}
with this semantic in arch/arm/mach-omap2/mux.c it is not possible and if I comment the first constraint I get "Multiple gpio paths" error, because found == 5.
Yegor
reply other threads:[~2012-07-23 14:00 UTC|newest]
Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
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