[svn-commits] tzafrir: linux/trunk r10474 - /linux/trunk/drivers/dahdi/xpp/

[SVN commits to the Digium repositories]

Author: tzafrir
Date: Thu Mar 15 07:49:55 2012
New Revision: 10474

URL: http://svnview.digium.com/svn/dahdi?view=rev&rev=10474
Log:
xpp: reset Astribank SPI busses

* A driver reload should reset Astribank hardware
* This patch send an SPI reset after we get AB_DESCRIPTION reply from Astribank

Signed-off-by: Oron Peled <oron.peled at xorcom.com>
Acked-by: Tzafrir Cohen <tzafrir.cohen at xorcom.com>

Modified:
    linux/trunk/drivers/dahdi/xpp/card_global.c
    linux/trunk/drivers/dahdi/xpp/card_global.h

Modified: linux/trunk/drivers/dahdi/xpp/card_global.c
URL: http://svnview.digium.com/svn/dahdi/linux/trunk/drivers/dahdi/xpp/card_global.c?view=diff&rev=10474&r1=10473&r2=10474
==============================================================================
--- linux/trunk/drivers/dahdi/xpp/card_global.c (original)
+++ linux/trunk/drivers/dahdi/xpp/card_global.c Thu Mar 15 07:49:55 2012
@@ -437,17 +437,35 @@
 	return 0;
 }
 
-/* 0x23 */ HOSTCMD(GLOBAL, RESET_SYNC_COUNTERS)
+/*
+ * Wrapper for different types of xbus reset
+ */
+static int send_xbus_reset(xbus_t *xbus, uint8_t reset_mask)
 {
 	xframe_t *xframe;
 	xpacket_t *pack;
 
 	BUG_ON(!xbus);
-	//XBUS_DBG(SYNC, xbus, "\n");
-	XFRAME_NEW_CMD(xframe, pack, xbus, GLOBAL, RESET_SYNC_COUNTERS, 0);
-	RPACKET_FIELD(pack, GLOBAL, RESET_SYNC_COUNTERS, mask) = 0x10;
+	XFRAME_NEW_CMD(xframe, pack, xbus, GLOBAL, XBUS_RESET, 0);
+	RPACKET_FIELD(pack, GLOBAL, XBUS_RESET, mask) = reset_mask;
 	send_cmd_frame(xbus, xframe);
 	return 0;
+}
+
+/* 0x23 */ HOSTCMD(GLOBAL, RESET_SPI)
+{
+	XBUS_DBG(DEVICES, xbus, "Sending SPI reset\n");
+	/* toggle reset line */
+	send_xbus_reset(xbus, 0x04);
+	send_xbus_reset(xbus, 0x00);
+	return 0;
+}
+
+
+/* 0x23 */ HOSTCMD(GLOBAL, RESET_SYNC_COUNTERS)
+{
+	//XBUS_DBG(SYNC, xbus, "\n");
+	return send_xbus_reset(xbus, 0x10);
 }
 
 /*---------------- GLOBAL: Astribank Reply Handlers -----------------------*/
@@ -542,6 +560,7 @@
 		list_add_tail(&card_desc->card_list, &worker->card_list);
 		spin_unlock_irqrestore(&worker->worker_lock, flags);
 	}
+	CALL_PROTO(GLOBAL, RESET_SPI, xbus, NULL);
 	if (!xbus_process_worker(xbus)) {
 		ret = -ENODEV;
 		goto out;

Modified: linux/trunk/drivers/dahdi/xpp/card_global.h
URL: http://svnview.digium.com/svn/dahdi/linux/trunk/drivers/dahdi/xpp/card_global.h?view=diff&rev=10474&r1=10473&r2=10474
==============================================================================
--- linux/trunk/drivers/dahdi/xpp/card_global.h (original)
+++ linux/trunk/drivers/dahdi/xpp/card_global.h Thu Mar 15 07:49:55 2012
@@ -35,7 +35,7 @@
 	 /**/ XPROTO_NAME(GLOBAL, SYNC_SOURCE) = 0x19,
 	XPROTO_NAME(GLOBAL, SYNC_REPLY) = 0x1A,
 	 /**/ XPROTO_NAME(GLOBAL, ERROR_CODE) = 0x22,
-	XPROTO_NAME(GLOBAL, RESET_SYNC_COUNTERS) = 0x23,
+	XPROTO_NAME(GLOBAL, XBUS_RESET) = 0x23,
 	XPROTO_NAME(GLOBAL, NULL_REPLY) = 0xFE,
 };
 
@@ -62,12 +62,13 @@
 DEF_RPACKET_DATA(GLOBAL, SYNC_SOURCE, __u8 sync_mode; __u8 drift;);
 DEF_RPACKET_DATA(GLOBAL, SYNC_REPLY, __u8 sync_mode; __u8 drift;);
 DEF_RPACKET_DATA(GLOBAL, REGISTER_REPLY, reg_cmd_t regcmd;);
-DEF_RPACKET_DATA(GLOBAL, RESET_SYNC_COUNTERS, __u8 mask;);
+DEF_RPACKET_DATA(GLOBAL, XBUS_RESET, __u8 mask;);
 DEF_RPACKET_DATA(GLOBAL, ERROR_CODE, __u8 category_code; __u8 errorbits;
 		 __u8 bad_packet[0];);
 
 /* 0x07 */ DECLARE_CMD(GLOBAL, AB_REQUEST);
 /* 0x19 */ DECLARE_CMD(GLOBAL, SYNC_SOURCE, enum sync_mode mode, int drift);
+/* 0x23 */ DECLARE_CMD(GLOBAL, RESET_SPI);
 /* 0x23 */ DECLARE_CMD(GLOBAL, RESET_SYNC_COUNTERS);
 
 int xpp_register_request(xbus_t *xbus, xpd_t *xpd, xportno_t portno,