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Diffstat (limited to 'chip/lm4/keyboard_raw.c')
-rw-r--r--chip/lm4/keyboard_raw.c119
1 files changed, 0 insertions, 119 deletions
diff --git a/chip/lm4/keyboard_raw.c b/chip/lm4/keyboard_raw.c
deleted file mode 100644
index 81af0efdde..0000000000
--- a/chip/lm4/keyboard_raw.c
+++ /dev/null
@@ -1,119 +0,0 @@
-/* Copyright 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.
- */
-
-/* Functions needed by keyboard scanner module for Chrome EC */
-
-#include "common.h"
-#include "keyboard_raw.h"
-#include "keyboard_scan.h"
-#include "registers.h"
-#include "task.h"
-
-void keyboard_raw_init(void)
-{
- /* Ensure top-level interrupt is disabled */
- keyboard_raw_enable_interrupt(0);
-
- /*
- * Set column outputs as open-drain; we either pull them low or let
- * them float high.
- */
- LM4_GPIO_AFSEL(LM4_GPIO_P) = 0; /* KSO[7:0] */
- LM4_GPIO_AFSEL(LM4_GPIO_Q) &= ~0x1f; /* KSO[12:8] */
- LM4_GPIO_DEN(LM4_GPIO_P) = 0xff;
- LM4_GPIO_DEN(LM4_GPIO_Q) |= 0x1f;
- LM4_GPIO_DIR(LM4_GPIO_P) = 0xff;
- LM4_GPIO_DIR(LM4_GPIO_Q) |= 0x1f;
- LM4_GPIO_ODR(LM4_GPIO_P) = 0xff;
- LM4_GPIO_ODR(LM4_GPIO_Q) |= 0x1f;
-
-#ifdef CONFIG_KEYBOARD_COL2_INVERTED
- /*
- * When column 2 is inverted, the Silego has a pulldown instead of a
- * pullup. So drive it push-pull instead of open-drain.
- */
- LM4_GPIO_ODR(LM4_GPIO_P) &= ~BIT(2);
-#endif
-
- /* Set row inputs with pull-up */
- LM4_GPIO_AFSEL(KB_SCAN_ROW_GPIO) &= 0xff;
- LM4_GPIO_DEN(KB_SCAN_ROW_GPIO) |= 0xff;
- LM4_GPIO_DIR(KB_SCAN_ROW_GPIO) = 0;
- LM4_GPIO_PUR(KB_SCAN_ROW_GPIO) = 0xff;
-
- /* Edge-sensitive on both edges. */
- LM4_GPIO_IS(KB_SCAN_ROW_GPIO) = 0;
- LM4_GPIO_IBE(KB_SCAN_ROW_GPIO) = 0xff;
-
- /*
- * Enable interrupts for the inputs. The top-level interrupt is still
- * masked off, so this won't trigger interrupts yet.
- */
- LM4_GPIO_IM(KB_SCAN_ROW_GPIO) = 0xff;
-}
-
-void keyboard_raw_task_start(void)
-{
- task_enable_irq(KB_SCAN_ROW_IRQ);
-}
-
-test_mockable void keyboard_raw_drive_column(int col)
-{
- int mask;
-
- if (col == KEYBOARD_COLUMN_NONE)
- mask = 0x1fff; /* Tri-state all outputs */
- else if (col == KEYBOARD_COLUMN_ALL)
- mask = 0; /* Assert all outputs */
- else
- mask = 0x1fff ^ BIT(col); /* Assert a single output */
-
-#ifdef CONFIG_KEYBOARD_COL2_INVERTED
- /* Invert column 2 output */
- mask ^= BIT(2);
-#endif
-
- LM4_GPIO_DATA(LM4_GPIO_P, 0xff) = mask & 0xff;
- LM4_GPIO_DATA(LM4_GPIO_Q, 0x1f) = (mask >> 8) & 0x1f;
-}
-
-test_mockable int keyboard_raw_read_rows(void)
-{
- /* Bits are active-low, so invert returned levels */
- return LM4_GPIO_DATA(KB_SCAN_ROW_GPIO, 0xff) ^ 0xff;
-}
-
-void keyboard_raw_enable_interrupt(int enable)
-{
- if (enable) {
- /*
- * Clear pending interrupts before enabling them, because the
- * raw interrupt status may have been tripped by keyboard
- * scanning or, if a key is already pressed, by driving all the
- * outputs.
- *
- * We won't lose keyboard events because the scanning task will
- * explicitly check the raw row state before waiting for an
- * interrupt. If a key is pressed, the task won't wait.
- */
- LM4_GPIO_ICR(KB_SCAN_ROW_GPIO) = 0xff;
- LM4_GPIO_IM(KB_SCAN_ROW_GPIO) = 0xff;
- } else {
- LM4_GPIO_IM(KB_SCAN_ROW_GPIO) = 0;
- }
-}
-
-/**
- * Interrupt handler for the entire GPIO bank of keyboard rows.
- */
-void keyboard_raw_interrupt(void)
-{
- /* Clear all pending keyboard interrupts */
- LM4_GPIO_ICR(KB_SCAN_ROW_GPIO) = 0xff;
-
- /* Wake the scan task */
- task_wake(TASK_ID_KEYSCAN);
-}
-DECLARE_IRQ(KB_SCAN_ROW_IRQ, keyboard_raw_interrupt, 3);