1 files changed, 66 insertions, 0 deletions
diff --git a/chip/mec1322/keyboard_raw.c b/chip/mec1322/keyboard_raw.c
new file mode 100644
index 0000000000..155ff839f2
--- /dev/null
+++ b/chip/mec1322/keyboard_raw.c
@@ -0,0 +1,66 @@
+/* Copyright (c) 2013 The Chromium OS Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ *
+ * Raw keyboard I/O layer for MEC1322
+ */
+
+#include "gpio.h"
+#include "keyboard_config.h"
+#include "keyboard_raw.h"
+#include "keyboard_scan.h"
+#include "registers.h"
+#include "task.h"
+#include "util.h"
+
+void keyboard_raw_init(void)
+{
+	keyboard_raw_enable_interrupt(0);
+	gpio_config_module(MODULE_KEYBOARD_SCAN, 1);
+
+	/* Enable keyboard scan interrupt */
+	MEC1322_INT_ENABLE(17) |= 1 << 21;
+	MEC1322_INT_BLK_EN |= 1 << 17;
+	MEC1322_KS_KSI_INT_EN = 0xff;
+}
+
+void keyboard_raw_task_start(void)
+{
+	task_enable_irq(MEC1322_IRQ_KSC_INT);
+}
+
+test_mockable void keyboard_raw_drive_column(int out)
+{
+	if (out == KEYBOARD_COLUMN_ALL)
+		MEC1322_KS_KSO_SEL = 1 << 5; /* KSEN=0, KSALL=1 */
+	else if (out == KEYBOARD_COLUMN_NONE)
+		MEC1322_KS_KSO_SEL = 1 << 6; /* KSEN=1 */
+	else
+		MEC1322_KS_KSO_SEL = out + 4; /* KSO starts from KSO04 */
+}
+
+test_mockable int keyboard_raw_read_rows(void)
+{
+	/* Invert it so 0=not pressed, 1=pressed */
+	return (MEC1322_KS_KSI_INPUT & 0xff) ^ 0xff;
+}
+
+void keyboard_raw_enable_interrupt(int enable)
+{
+	if (enable) {
+		task_clear_pending_irq(MEC1322_IRQ_KSC_INT);
+		task_enable_irq(MEC1322_IRQ_KSC_INT);
+	} else {
+		task_disable_irq(MEC1322_IRQ_KSC_INT);
+	}
+}
+
+static void keyboard_raw_interrupt(void)
+{
+	/* Clear interrupt status bits */
+	MEC1322_KS_KSI_STATUS = 0xff;
+
+	/* Wake keyboard scan task to handle interrupt */
+	task_wake(TASK_ID_KEYSCAN);
+}
+DECLARE_IRQ(MEC1322_IRQ_KSC_INT, keyboard_raw_interrupt, 1);