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https://github.com/Telecominfraproject/OpenCellular.git
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bdc1f4c1dc
CONFIG_USB is a better indicator that USB related code needs to be
included.
BRANCH=none
BUG=none
TEST=none - this patch helped compartmentnalize the code when
debugging bringup on a new platform.
Change-Id: I12ef77325591853d73e2e09f7c491954e272bde9
Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/291854
Reviewed-by: Bill Richardson <wfrichar@chromium.org>
95 lines
2.6 KiB
C
95 lines
2.6 KiB
C
/* Copyright (c) 2014 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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#include "common.h"
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#include "console.h"
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#include "ec_version.h"
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#include "gpio.h"
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#include "hooks.h"
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#include "registers.h"
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#include "task.h"
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#include "usb.h"
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#include "usb_hid.h"
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#include "util.h"
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/*
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* There's no way to trigger on both rising and falling edges, so force a
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* compiler error if we try. The workaround is to use the pinmux to connect
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* two GPIOs to the same input and configure each one for a separate edge.
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*/
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#undef GPIO_INT_BOTH
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#define GPIO_INT_BOTH NOT_SUPPORTED_ON_CR50
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#include "gpio_list.h"
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#ifdef CONFIG_USB_HID
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static void send_hid_event(void)
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{
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#if !defined(CHIP_VARIANT_CR50_A1)
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uint64_t rpt = 0;
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uint8_t *key_ptr = (void *)&rpt + 2;
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/* Convert SW_N/SW_S/SW_W/SW_E to A,B,C,D keys */
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if (gpio_get_level(GPIO_SW_N))
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*key_ptr++ = 0x04; /* A keycode */
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if (gpio_get_level(GPIO_SW_S))
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*key_ptr++ = 0x05; /* B keycode */
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if (gpio_get_level(GPIO_SW_W))
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*key_ptr++ = 0x06; /* C keycode */
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if (gpio_get_level(GPIO_SW_E))
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*key_ptr++ = 0x07; /* D keycode */
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/* send the keyboard state over USB HID */
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set_keyboard_report(rpt);
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/* check release in the future */
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hook_call_deferred(send_hid_event, 40);
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#endif
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}
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DECLARE_DEFERRED(send_hid_event);
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#endif
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/* Interrupt handler for button pushes */
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void button_event(enum gpio_signal signal)
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{
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int v;
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/* We have two GPIOs on the same input (one rising edge, one falling
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* edge), so de-alias them */
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if (signal >= GPIO_SW_N_)
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signal -= (GPIO_SW_N_ - GPIO_SW_N);
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v = gpio_get_level(signal);
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#ifdef CONFIG_USB_HID
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send_hid_event();
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#endif
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ccprintf("Button %d = %d\n", signal, v);
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gpio_set_level(signal - GPIO_SW_N + GPIO_LED_4, v);
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}
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/* Initialize board. */
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static void board_init(void)
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{
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gpio_enable_interrupt(GPIO_SW_N);
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gpio_enable_interrupt(GPIO_SW_S);
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gpio_enable_interrupt(GPIO_SW_W);
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gpio_enable_interrupt(GPIO_SW_E);
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gpio_enable_interrupt(GPIO_SW_N_);
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gpio_enable_interrupt(GPIO_SW_S_);
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gpio_enable_interrupt(GPIO_SW_W_);
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gpio_enable_interrupt(GPIO_SW_E_);
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}
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DECLARE_HOOK(HOOK_INIT, board_init, HOOK_PRIO_DEFAULT);
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#if defined(CONFIG_USB)
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const void * const usb_strings[] = {
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[USB_STR_DESC] = usb_string_desc,
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[USB_STR_VENDOR] = USB_STRING_DESC("Google Inc."),
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[USB_STR_PRODUCT] = USB_STRING_DESC("Cr50"),
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[USB_STR_VERSION] = USB_STRING_DESC(CROS_EC_VERSION32),
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[USB_STR_CONSOLE_NAME] = USB_STRING_DESC("Shell"),
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[USB_STR_BLOB_NAME] = USB_STRING_DESC("Blob"),
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[USB_STR_HID_NAME] = USB_STRING_DESC("PokeyPokey"),
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};
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BUILD_ASSERT(ARRAY_SIZE(usb_strings) == USB_STR_COUNT);
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#endif
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