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c77575ac0d
For all GPIOs, the current values are recorded. A test can then change the value of a GPIO input by gpio_set_level(). The changed value is recorded and also interrupt is fired if the change fits the interrupt flags defined in board/host/board.c. BUG=chrome-os-partner:19235 TEST=Pass all tests BRANCH=None Change-Id: If8e547e5adf4a20dcb118f5fe2187293005d4ca3 Signed-off-by: Vic Yang <victoryang@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/170907 Reviewed-by: Bill Richardson <wfrichar@chromium.org> Reviewed-by: Randall Spangler <rspangler@chromium.org> Reviewed-by: Vincent Palatin <vpalatin@chromium.org>
75 lines
1.6 KiB
C
75 lines
1.6 KiB
C
/* Copyright (c) 2013 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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/* GPIO module for emulator */
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#include "console.h"
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#include "common.h"
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#include "gpio.h"
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#include "timer.h"
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#include "util.h"
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static int gpio_values[GPIO_COUNT];
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static int gpio_interrupt_enabled[GPIO_COUNT];
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test_mockable void gpio_pre_init(void)
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{
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/* Nothing */
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}
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test_mockable int gpio_get_level(enum gpio_signal signal)
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{
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return gpio_values[signal];
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}
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static int gpio_interrupt_check(uint32_t flags, int old, int new)
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{
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if ((flags & (GPIO_INT_F_RISING|GPIO_INT_F_BOTH)) &&
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old == 0 && new == 1)
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return 1;
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if ((flags & (GPIO_INT_F_FALLING|GPIO_INT_F_BOTH)) &&
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old == 1 && new == 0)
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return 1;
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if ((flags & GPIO_INT_F_LOW) && new == 0)
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return 1;
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if ((flags & GPIO_INT_F_HIGH) && new == 1)
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return 1;
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return 0;
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}
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test_mockable void gpio_set_level(enum gpio_signal signal, int value)
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{
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const struct gpio_info *g = gpio_list + signal;
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const uint32_t flags = g->flags;
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const int old_value = gpio_values[signal];
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gpio_values[signal] = value;
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if (g->irq_handler == NULL || !gpio_interrupt_enabled[signal])
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return;
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if (gpio_interrupt_check(flags, old_value, value))
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g->irq_handler(signal);
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}
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test_mockable int gpio_enable_interrupt(enum gpio_signal signal)
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{
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gpio_interrupt_enabled[signal] = 1;
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return EC_SUCCESS;
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}
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test_mockable void gpio_set_flags_by_mask(uint32_t port, uint32_t mask,
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uint32_t flags)
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{
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/* Nothing */
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}
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test_mockable void gpio_set_alternate_function(uint32_t port, uint32_t mask,
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int func)
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{
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/* Nothing */
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}
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