[src/trunk]: src/sys/arch/evbarm/odroid Get the Odroid-U3 USB hub working! It...

[reinoud <reinoud%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/23f0bdd4c5f6
branches:  trunk
changeset: 329143:23f0bdd4c5f6
user:      reinoud <reinoud%NetBSD.org@localhost>
date:      Sat May 10 22:24:32 2014 +0000

description:
Get the Odroid-U3 USB hub working! It now attaches and /lists all its children
like mouse etc.

diffstat:

 sys/arch/evbarm/odroid/odroid_machdep.c |  81 +++++++++++++++++++++++++++++++-
 1 files changed, 78 insertions(+), 3 deletions(-)

diffs (126 lines):

diff -r 512db7ec2a0a -r 23f0bdd4c5f6 sys/arch/evbarm/odroid/odroid_machdep.c
--- a/sys/arch/evbarm/odroid/odroid_machdep.c   Sat May 10 21:46:15 2014 +0000
+++ b/sys/arch/evbarm/odroid/odroid_machdep.c   Sat May 10 22:24:32 2014 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: odroid_machdep.c,v 1.14 2014/05/10 20:24:06 reinoud Exp $ */
+/*     $NetBSD: odroid_machdep.c,v 1.15 2014/05/10 22:24:32 reinoud Exp $ */
 
 /*
  * Copyright (c) 2014 The NetBSD Foundation, Inc.
@@ -31,7 +31,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: odroid_machdep.c,v 1.14 2014/05/10 20:24:06 reinoud Exp $");
+__KERNEL_RCSID(0, "$NetBSD: odroid_machdep.c,v 1.15 2014/05/10 22:24:32 reinoud Exp $");
 
 #include "opt_evbarm_boardtype.h"
 #include "opt_exynos.h"
@@ -518,7 +518,8 @@
        prop_dictionary_set_uint32(dict, "nc-GPX0", 0xff - 0x00);
        prop_dictionary_set_uint32(dict, "nc-GPX1", 0xff - 0x00);
        prop_dictionary_set_uint32(dict, "nc-GPX2", 0xff - 0x00);
-       prop_dictionary_set_uint32(dict, "nc-GPX3", 0xff - 0x00);
+       /* hub communication at pin 0, 4, 5: */
+       prop_dictionary_set_uint32(dict, "nc-GPX3", 0xff - 0x31);
        prop_dictionary_set_uint32(dict, "nc-GPZ",  0xff - 0x00);
        prop_dictionary_set_uint32(dict, "nc-GPV0", 0xff - 0x00);
        prop_dictionary_set_uint32(dict, "nc-GPV1", 0xff - 0x00);
@@ -559,6 +560,12 @@
        if (device_is_a(self, "mct"))
                prop_dictionary_set_cstring(dict, "heartbeat", "led1");
 
+       if (device_is_a(self, "exyousb")) {
+               prop_dictionary_set_cstring(dict, "nreset", "hub_nreset");
+               prop_dictionary_set_cstring(dict, "hubconnect", "hub_connect");
+               prop_dictionary_set_cstring(dict, "nint", "hub_nint");
+       }
+
 #ifdef EXYNOS4
        if (device_is_a(self, "exyogpio") && (IS_EXYNOS4_P())) {
                /* unused bits */
@@ -566,6 +573,10 @@
 
                /* explicit pin settings */
                prop_dictionary_set_cstring(dict, "led1", ">GPC1[0]");
+
+               prop_dictionary_set_cstring(dict, "hub_nreset", ">GPX3[5]");
+               prop_dictionary_set_cstring(dict, "hub_connect", ">GPX3[4]");
+               prop_dictionary_set_cstring(dict, "hub_nint", "<GPX3[0]");
        }
 #endif
 #ifdef EXYNOS5
@@ -579,9 +590,73 @@
 }
 
 
+static void
+exynos_usb_init_usb3503_hub(device_t self)
+{
+       prop_dictionary_t dict = device_properties(self);
+       const char *pin_nreset, *pin_hubconnect, *pin_nint;
+       struct exynos_gpio_pindata nreset_pin, hubconnect_pin, nint_pin;
+       int ok1, ok2, ok3;
+
+       prop_dictionary_get_cstring_nocopy(dict, "nreset", &pin_nreset);
+       prop_dictionary_get_cstring_nocopy(dict, "hubconnect", &pin_hubconnect);
+       prop_dictionary_get_cstring_nocopy(dict, "nint", &pin_nint);
+       if (pin_nreset && pin_hubconnect && pin_nint) {
+               ok1 = exynos_gpio_pin_reserve(pin_nreset, &nreset_pin);
+               ok2 = exynos_gpio_pin_reserve(pin_hubconnect, &hubconnect_pin);
+               ok3 = exynos_gpio_pin_reserve(pin_nint, &nint_pin);
+               if (!ok1)
+                       aprint_error_dev(self,
+                           "can't reserve GPIO pin %s\n", pin_nreset);
+               if (!ok2)
+                       aprint_error_dev(self,
+                           "can't reserve GPIO pin %s\n", pin_hubconnect);
+               if (!ok3)
+                       aprint_error_dev(self,
+                           "can't reserve GPIO pin %s\n", pin_nint);
+               if (!(ok1 && ok2 && ok3))
+                       return;
+
+               /* reset pin to zero */
+               exynos_gpio_pindata_write(&nreset_pin, 0);
+               DELAY(10000);
+
+               /* pull intn low */
+               exynos_gpio_pindata_ctl(&nint_pin, GPIO_PIN_PULLDOWN);
+               DELAY(10000);
+
+               /* set hubconnect low */
+               exynos_gpio_pindata_write(&hubconnect_pin, 0);
+               DELAY(10000);
+
+               /* reset pin up again, hub enters RefClk stage */
+               exynos_gpio_pindata_write(&nreset_pin, 1);
+               DELAY(10000);
+
+               /* set hubconnect high */
+               exynos_gpio_pindata_write(&hubconnect_pin, 1);
+               DELAY(10000);
+
+               /* release intn */
+               exynos_gpio_pindata_ctl(&nint_pin, GPIO_PIN_TRISTATE);
+               DELAY(10000);
+
+               /* DONE! */
+       } else {
+               aprint_error_dev(self, "failed to lookup GPIO pins");
+       }
+       /* XXX leaving pins claimed! */
+}
+
+
 void
 odroid_device_register_post_config(device_t self, void *aux)
 {
        exynos_device_register_post_config(self, aux);
+
+       if (device_is_a(self, "exyousb")) {
+               exynos_usb_init_usb3503_hub(self);
+               /* TBD power cycle USB ethernet chip */
+       }
 }