mirror of
https://github.com/Telecominfraproject/OpenCellular.git
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4cf4fcf1cb
Initial support for the ITE IT8380 chip with the following peripherals : - 8250-like UART module. - HW timer (with a 128-us tick period). - GPIO with pins initialization and edge interrupt support. other functions are stubbed. - Clock : basic fixed frequency setup only. It also add the dev board configuration as a test vehicle. Signed-off-by: Alec Berg <alecaberg@chromium.org> Signed-off-by: Vincent Palatin <vpalatin@chromium.org> BRANCH=none BUG=chrome-os-partner:23575 TEST=make BOARD=it8380dev on IT8380 dev board, use the EC serial console, use gettime from console. Change-Id: Id4bf37d1beb21d1a4bee404c9a0bc500025fe787 Reviewed-on: https://chromium-review.googlesource.com/175481 Reviewed-by: Vincent Palatin <vpalatin@chromium.org> Commit-Queue: Alec Berg <alecaberg@chromium.org> Tested-by: Alec Berg <alecaberg@chromium.org>
107 lines
3.0 KiB
C
107 lines
3.0 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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/* IT8380 development board configuration */
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#include "common.h"
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#include "console.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 "util.h"
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/* Test GPIO interrupt function that toggles one LED. */
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void test_interrupt(enum gpio_signal signal)
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{
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static int busy_state;
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/* toggle LED */
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busy_state = !busy_state;
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gpio_set_level(GPIO_BUSY_LED, busy_state);
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}
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/* GPIO signal list. Must match order from enum gpio_signal. */
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const struct gpio_info gpio_list[] = {
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{"H_LED0", GPIO_A, (1<<0), GPIO_ODR_HIGH},
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{"H_LED1", GPIO_A, (1<<1), GPIO_ODR_HIGH},
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{"H_LED2", GPIO_A, (1<<2), GPIO_ODR_HIGH},
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{"H_LED3", GPIO_A, (1<<3), GPIO_ODR_HIGH},
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{"H_LED4", GPIO_A, (1<<4), GPIO_ODR_HIGH},
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{"H_LED5", GPIO_A, (1<<5), GPIO_ODR_HIGH},
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{"H_LED6", GPIO_A, (1<<6), GPIO_ODR_HIGH},
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{"L_LED0", GPIO_I, (1<<0), GPIO_ODR_HIGH},
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{"L_LED1", GPIO_I, (1<<1), GPIO_ODR_HIGH},
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{"L_LED2", GPIO_I, (1<<2), GPIO_ODR_HIGH},
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{"L_LED3", GPIO_I, (1<<3), GPIO_ODR_HIGH},
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{"L_LED4", GPIO_I, (1<<4), GPIO_ODR_HIGH},
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{"L_LED5", GPIO_I, (1<<5), GPIO_ODR_HIGH},
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{"L_LED6", GPIO_I, (1<<6), GPIO_ODR_HIGH},
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{"BUSY_LED", GPIO_J, (1<<0), GPIO_OUT_LOW},
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{"GOOD_LED", GPIO_J, (1<<1), GPIO_OUT_HIGH},
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{"FAIL_LED", GPIO_J, (1<<2), GPIO_OUT_LOW},
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{"SW0", GPIO_E, (1<<0), GPIO_INPUT},
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{"SW1", GPIO_E, (1<<1), GPIO_INPUT | GPIO_PULL_DOWN},
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{"SW2", GPIO_E, (1<<2), GPIO_INPUT | GPIO_PULL_DOWN},
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{"SW3", GPIO_E, (1<<3), GPIO_INPUT | GPIO_PULL_DOWN},
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{"START_SW", GPIO_E, (1<<4), GPIO_INT_FALLING, test_interrupt},
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/* Unimplemented signals which we need to emulate for now */
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GPIO_SIGNAL_NOT_IMPLEMENTED("ENTERING_RW"),
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};
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BUILD_ASSERT(ARRAY_SIZE(gpio_list) == GPIO_COUNT);
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/* Pins with alternate functions */
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const struct gpio_alt_func gpio_alt_funcs[] = {
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{GPIO_B, 0x03, 1, MODULE_UART, GPIO_PULL_UP}, /* UART0 */
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};
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const int gpio_alt_funcs_count = ARRAY_SIZE(gpio_alt_funcs);
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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_START_SW);
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}
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DECLARE_HOOK(HOOK_INIT, board_init, HOOK_PRIO_DEFAULT);
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/*****************************************************************************/
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/* Console commands */
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void display_7seg(uint8_t val)
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{
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int i;
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static const uint8_t digits[16] = {
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0xc0, 0xf9, 0xa8, 0xb0,
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0x99, 0x92, 0x82, 0xf8,
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0x80, 0x98, 0x88, 0x83,
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0xc6, 0xa1, 0x86, 0x8e,
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};
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for (i = 0; i < 7; i++)
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gpio_set_level(GPIO_H_LED0 + i, digits[val >> 4] & (1 << i));
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for (i = 0; i < 7; i++)
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gpio_set_level(GPIO_L_LED0 + i, digits[val & 0xf] & (1 << i));
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}
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static int command_7seg(int argc, char **argv)
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{
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uint8_t val;
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char *e;
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if (argc != 2)
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return EC_ERROR_PARAM_COUNT;
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val = strtoi(argv[1], &e, 16);
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if (*e)
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return EC_ERROR_PARAM1;
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ccprintf("display 0x%02x\n", val);
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display_7seg(val);
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return EC_SUCCESS;
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}
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DECLARE_CONSOLE_COMMAND(seg7, command_7seg,
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"<hex>",
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"Print 8-bit value on 7-segment display",
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NULL);
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