simtrace: add support for the analog bus switch

1 files changed, 76 insertions, 0 deletions

diff --git a/firmware/src/simtrace/sim_switch.c b/firmware/src/simtrace/sim_switch.c
new file mode 100644
index 0000000..4f5621c
--- /dev/null
+++ b/firmware/src/simtrace/sim_switch.c
@@ -0,0 +1,76 @@
+/*
+ * (C) 2011 by Harald Welte <hwelte@hmw-consulting.de>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+#include <errno.h>
+#include <string.h>
+#include <sys/types.h>
+#include <AT91SAM7.h>
+#include <lib_AT91SAM7.h>
+#include <openpcd.h>
+
+#include <simtrace_usb.h>
+
+#include <os/usb_handler.h>
+#include <os/dbgu.h>
+#include <os/pio_irq.h>
+
+#include "../simtrace.h"
+#include "../openpcd.h"
+
+#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
+
+void sim_switch_mode(int connect_io, int connect_misc)
+{
+	if (connect_io)
+		AT91F_PIO_SetOutput(AT91C_BASE_PIOA, SIMTRACE_PIO_IO_SW);
+	else
+		AT91F_PIO_ClearOutput(AT91C_BASE_PIOA, SIMTRACE_PIO_IO_SW);
+
+	if (connect_misc)
+		AT91F_PIO_SetOutput(AT91C_BASE_PIOA, SIMTRACE_PIO_SC_SW);
+	else
+		AT91F_PIO_ClearOutput(AT91C_BASE_PIOA, SIMTRACE_PIO_SC_SW);
+}
+
+static void sw_sim_irq(u_int32_t pio)
+{
+
+	if (!AT91F_PIO_IsInputSet(AT91C_BASE_PIOA, pio))
+		DEBUGPCR("SIM card inserted");
+	else
+		DEBUGPCR("SIM card removed");
+}
+
+void sim_switch_init(void)
+{
+	DEBUGPCR("ISO_SW Initializing");
+
+	/* make sure we get clock from the power management controller */
+	AT91F_US0_CfgPMC();
+
+	/* configure both signals as output */
+	AT91F_PIO_CfgOutput(AT91C_BASE_PIOA, SIMTRACE_PIO_SC_SW |
+					     SIMTRACE_PIO_IO_SW);
+
+	/* configure sim card detect */
+	AT91F_PIO_CfgInput(AT91C_BASE_PIOA, SIMTRACE_PIO_SW_SIM);
+	AT91F_PIO_CfgInputFilter(AT91C_BASE_PIOA, SIMTRACE_PIO_SW_SIM);
+	pio_irq_register(SIMTRACE_PIO_SW_SIM, &sw_sim_irq);
+	pio_irq_enable(SIMTRACE_PIO_SW_SIM);
+}