port80: Remove HAS_TASK_PORT80.

The only boards that had a port 80 task were the ones using the MEC1322.
Since that EC now has a dedicated timer interrupt configured for port80
writes, we can remove this code that was providing the port 80 task.

Additionally, the config option CONFIG_PORT80_TASK_EN is removed.

BUG=chrome-os-partner:46062
BRANCH=None
TEST=make -j buildall tests

CQ-DEPEND=CL:305591

Change-Id: I145d989b8872240e749ef77aabe0ae76fc94d443
Signed-off-by: Aseda Aboagye <aaboagye@google.com>
Reviewed-on: https://chromium-review.googlesource.com/305791
Commit-Ready: Aseda Aboagye <aaboagye@chromium.org>
Tested-by: Aseda Aboagye <aaboagye@chromium.org>
Reviewed-by: Kevin K Wong <kevin.k.wong@intel.com>
Reviewed-by: Shawn N <shawnn@chromium.org>

2 files changed, 0 insertions, 68 deletions

diff --git a/common/port80.c b/common/port80.c
index 35723f878a..0523fe35b1 100644
--- a/common/port80.c
+++ b/common/port80.c
@@ -24,10 +24,6 @@ static int writes;    /* Number of port 80 writes so far */
 static int last_boot; /* Last code from previous boot */
 static int scroll;
 static int print_in_int = 1;
-#ifdef HAS_TASK_PORT80
-static int task_en;   /* Port 80 task control */
-static int task_timeout = -1;
-#endif
 
 void port_80_write(int data)
 {
@@ -51,46 +47,6 @@ void port_80_write(int data)
 	writes++;
 }
 
-#ifdef HAS_TASK_PORT80
-/*
- * Port80 POST code polling limitation:
- * - POST code 0xFF is ignored.
- * - POST code frequency is greater than 1 msec.
- */
-void port80_task(void)
-{
-	while (1) {
-		int data = port_80_read();
-
-		if (data != PORT_80_IGNORE)
-			port_80_write(data);
-
-		task_wait_event(task_timeout);
-	}
-}
-
-static void port_80_task_enable(void)
-{
-	task_en = 1;
-	task_timeout = PORT80_POLL_PERIOD;
-	task_wake(TASK_ID_PORT80);
-}
-
-static void port_80_task_disable(void)
-{
-	task_en = 0;
-	task_timeout = -1;
-}
-
-#ifdef CONFIG_PORT80_TASK_EN
-
-/* Only enable the port80 task when the AP is started, to save power */
-DECLARE_HOOK(HOOK_CHIPSET_RESUME, port_80_task_enable, HOOK_PRIO_DEFAULT);
-DECLARE_HOOK(HOOK_CHIPSET_SUSPEND, port_80_task_disable, HOOK_PRIO_DEFAULT);
-
-#endif /* PORT80_TASK_EN */
-#endif /* HAS_TASK_PORT80 */
-
 /*****************************************************************************/
 /* Console commands */
 
@@ -117,20 +73,6 @@ static int command_port80(int argc, char **argv)
 		} else if (!strcasecmp(argv[1], "flush")) {
 			writes = 0;
 			return EC_SUCCESS;
-#ifdef HAS_TASK_PORT80
-		} else if (!strcasecmp(argv[1], "task")) {
-			task_en = !task_en;
-			ccprintf("task %sabled\n", task_en ? "en" : "dis");
-			task_en ? port_80_task_enable() :
-				  port_80_task_disable();
-
-			return EC_SUCCESS;
-		} else if (!strcasecmp(argv[1], "poll")) {
-			i = port_80_read();
-			if (i != PORT_80_IGNORE)
-				port_80_write(i);
-			/* continue on to print the port 80 history */
-#endif
 		} else {
 			return EC_ERROR_PARAM1;
 		}
diff --git a/include/config.h b/include/config.h
index 74d7ebf264..e93001087c 100644
--- a/include/config.h
+++ b/include/config.h
@@ -1365,16 +1365,6 @@
  */
 #undef CONFIG_POLLING_UART
 
-/*****************************************************************************/
-
-/*
- * Enable polling at boot by port 80 task.
- * Ignored if port 80 is handled by interrupt
- */
-#undef CONFIG_PORT80_TASK_EN
-
-/*****************************************************************************/
-
 /* Compile common code to support power button debouncing */
 #undef CONFIG_POWER_BUTTON