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| author | Vic Yang <victoryang@chromium.org> | 2013-09-29 00:55:36 +0800 |
|---|---|---|
| committer | chrome-internal-fetch <chrome-internal-fetch@google.com> | 2013-10-01 08:16:34 +0000 |
| commit | c77575ac0daa5966772779cedbaab6f607cf9a98 (patch) | |
| tree | f1e7cf3ca7f232e4be95b7bd57e652253eddaacc /chip/host | |
| parent | 2d856c51039153effe4b9e9d7924c841fb741da5 (diff) | |
| download | chrome-ec-c77575ac0daa5966772779cedbaab6f607cf9a98.tar.gz | |
Emulator support of fake GPIO input
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>
Diffstat (limited to 'chip/host')
| -rw-r--r-- | chip/host/gpio.c | 35 |
1 files changed, 34 insertions, 1 deletions
diff --git a/chip/host/gpio.c b/chip/host/gpio.c index 64191aaca5..2fcb32b2a8 100644 --- a/chip/host/gpio.c +++ b/chip/host/gpio.c @@ -5,8 +5,15 @@ /* GPIO module for emulator */ +#include "console.h" + #include "common.h" #include "gpio.h" +#include "timer.h" +#include "util.h" + +static int gpio_values[GPIO_COUNT]; +static int gpio_interrupt_enabled[GPIO_COUNT]; test_mockable void gpio_pre_init(void) { @@ -15,16 +22,42 @@ test_mockable void gpio_pre_init(void) test_mockable int gpio_get_level(enum gpio_signal signal) { + return gpio_values[signal]; +} + +static int gpio_interrupt_check(uint32_t flags, int old, int new) +{ + if ((flags & (GPIO_INT_F_RISING|GPIO_INT_F_BOTH)) && + old == 0 && new == 1) + return 1; + if ((flags & (GPIO_INT_F_FALLING|GPIO_INT_F_BOTH)) && + old == 1 && new == 0) + return 1; + if ((flags & GPIO_INT_F_LOW) && new == 0) + return 1; + if ((flags & GPIO_INT_F_HIGH) && new == 1) + return 1; return 0; } test_mockable void gpio_set_level(enum gpio_signal signal, int value) { - /* Nothing */ + const struct gpio_info *g = gpio_list + signal; + const uint32_t flags = g->flags; + const int old_value = gpio_values[signal]; + + gpio_values[signal] = value; + + if (g->irq_handler == NULL || !gpio_interrupt_enabled[signal]) + return; + + if (gpio_interrupt_check(flags, old_value, value)) + g->irq_handler(signal); } test_mockable int gpio_enable_interrupt(enum gpio_signal signal) { + gpio_interrupt_enabled[signal] = 1; return EC_SUCCESS; } |