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/* Copyright (c) 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.
*/
/* McCroskey board-specific configuration */
#include "chipset.h"
#include "common.h"
#include "console.h"
#include "gpio.h"
#include "hooks.h"
#include "i2c.h"
#include "keyboard_raw.h"
#include "registers.h"
#include "spi.h"
#include "task.h"
#include "timer.h"
#include "util.h"
#define GPIO_KB_INPUT (GPIO_INPUT | GPIO_PULL_UP | GPIO_INT_BOTH)
#define GPIO_KB_OUTPUT (GPIO_OUTPUT | GPIO_OPEN_DRAIN | GPIO_OUT_LOW)
#define HARD_RESET_TIMEOUT_MS 5
static void kbd_power_on(enum gpio_signal signal);
/* GPIO signal list. Must match order from enum gpio_signal. */
const struct gpio_info gpio_list[] = {
/* Inputs with interrupt handlers are first for efficiency */
{"KB_IN00", GPIO_B, (1<<8), GPIO_KB_INPUT,
keyboard_raw_gpio_interrupt},
{"KB_IN01", GPIO_B, (1<<9), GPIO_KB_INPUT,
keyboard_raw_gpio_interrupt},
{"KB_IN02", GPIO_B, (1<<10), GPIO_KB_INPUT,
keyboard_raw_gpio_interrupt},
{"KB_IN03", GPIO_B, (1<<11), GPIO_KB_INPUT,
keyboard_raw_gpio_interrupt},
{"KB_IN04", GPIO_B, (1<<12), GPIO_KB_INPUT,
keyboard_raw_gpio_interrupt},
{"KB_IN05", GPIO_B, (1<<13), GPIO_KB_INPUT,
keyboard_raw_gpio_interrupt},
{"KB_IN06", GPIO_B, (1<<14), GPIO_KB_INPUT,
keyboard_raw_gpio_interrupt},
{"KB_IN07", GPIO_B, (1<<15), GPIO_KB_INPUT,
keyboard_raw_gpio_interrupt},
{"KBD_PWR_BUTTON", GPIO_B, (1<<2), GPIO_INPUT, kbd_power_on},
{"OMZO_RDY_L", GPIO_A, (1<<0), GPIO_INPUT, NULL}, /* PA0_WKUP */
{"OZMO_RST_L", GPIO_A, (1<<2), GPIO_ODR_HIGH, NULL},
{"VBUS_UP_DET", GPIO_A, (1<<3), GPIO_INPUT, NULL},
{"OZMO_REQ_L", GPIO_A, (1<<8), GPIO_INPUT, NULL},
{"CHARGE_ZERO", GPIO_B, (1<<0), GPIO_INPUT, NULL},
{"CHARGE_SHUNT", GPIO_B, (1<<1), GPIO_INPUT, NULL},
{"PMIC_INT_L", GPIO_B, (1<<5), GPIO_INPUT, NULL},
/*
* I2C pins should be configured as inputs until I2C module is
* initialized. This will avoid driving the lines unintentionally.
*/
{"I2C1_SCL", GPIO_B, (1<<6), GPIO_INPUT, NULL},
{"I2C1_SDA", GPIO_B, (1<<7), GPIO_INPUT, NULL},
{"KB_OUT00", GPIO_C, (1<<0), GPIO_KB_OUTPUT, NULL},
{"KB_OUT01", GPIO_C, (1<<1), GPIO_KB_OUTPUT, NULL},
{"KB_OUT02", GPIO_C, (1<<2), GPIO_KB_OUTPUT, NULL},
{"KB_OUT03", GPIO_C, (1<<3), GPIO_KB_OUTPUT, NULL},
{"KB_OUT04", GPIO_C, (1<<4), GPIO_KB_OUTPUT, NULL},
{"KB_OUT05", GPIO_C, (1<<5), GPIO_KB_OUTPUT, NULL},
{"KB_OUT06", GPIO_C, (1<<6), GPIO_KB_OUTPUT, NULL},
{"KB_OUT07", GPIO_C, (1<<7), GPIO_KB_OUTPUT, NULL},
{"KB_OUT08", GPIO_C, (1<<8), GPIO_KB_OUTPUT, NULL},
{"KB_OUT09", GPIO_C, (1<<9), GPIO_KB_OUTPUT, NULL},
{"KB_OUT10", GPIO_C, (1<<10), GPIO_KB_OUTPUT, NULL},
{"KB_OUT11", GPIO_C, (1<<11), GPIO_KB_OUTPUT, NULL},
{"KB_OUT12", GPIO_C, (1<<12), GPIO_KB_OUTPUT, NULL},
{"USB_VBUS_CTRL", GPIO_C, (1<<13), GPIO_OUT_LOW, NULL},
{"HUB_RESET", GPIO_C, (1<<14), GPIO_ODR_HIGH, NULL},
{"WP_L", GPIO_D, (1<<2), GPIO_INPUT, NULL},
/* FIXME: make this alt. function */
{"BL_PWM", GPIO_A, (1<<1), GPIO_OUTPUT, NULL},
/* Unimplemented signals which we need to emulate for now */
GPIO_SIGNAL_NOT_IMPLEMENTED("EC_INT"),
GPIO_SIGNAL_NOT_IMPLEMENTED("ENTERING_RW"),
#if 0
/* Other GPIOs (probably need to be set up below as alt. function) */
{"STM_USBDM", GPIO_A, (1<<11), GPIO_DEFAULT, NULL},
{"STM_USBDP", GPIO_A, (1<<12), GPIO_DEFAULT, NULL},
{"JTMS_SWDIO", GPIO_A, (1<<13), GPIO_DEFAULT, NULL},
{"JTCK_SWCLK", GPIO_A, (1<<14), GPIO_DEFAULT, NULL},
{"JTDI", GPIO_A, (1<<15), GPIO_DEFAULT, NULL},
{"JTDO", GPIO_B, (1<<3), GPIO_DEFAULT, NULL},
{"JNTRST", GPIO_B, (1<<4), GPIO_DEFAULT, NULL},
{"OSC32_OUT", GPIO_C, (1<<15), GPIO_DEFAULT, NULL},
#endif
};
BUILD_ASSERT(ARRAY_SIZE(gpio_list) == GPIO_COUNT);
/* Pins with alternate functions */
const struct gpio_alt_func gpio_alt_funcs[] = {
/*
* TODO(rspangler): use this instead of hard-coded register writes in
* board_config_pre_init().
*/
};
const int gpio_alt_funcs_count = ARRAY_SIZE(gpio_alt_funcs);
void board_config_pre_init(void)
{
uint32_t val;
/* Enable all GPIOs clocks
* TODO: more fine-grained enabling for power saving
*/
STM32_RCC_APB2ENR |= 0x1fd;
#ifdef CONFIG_SPI
/* SPI1 on pins PA4-7 (alt. function push-pull, 10MHz) */
/* FIXME: Connected device SPI freq is fxo/2 in master mode, fxo/4
* in slave mode. fxo ranges from 12-40MHz */
val = STM32_GPIO_CRL(GPIO_A) & ~0xffff0000;
val |= 0x99990000;
STM32_GPIO_CRL(GPIO_A) = val;
#endif
/* remap OSC_IN/OSC_OUT to PD0/PD1 */
STM32_GPIO_AFIO_MAPR |= 1 << 15;
/* use PB3 as a GPIO, so disable JTAG and keep only SWD */
STM32_GPIO_AFIO_MAPR = (STM32_GPIO_AFIO_MAPR & ~(0x7 << 24))
| (2 << 24);
/* remap TIM2_CH2 to PB3 */
STM32_GPIO_AFIO_MAPR = (STM32_GPIO_AFIO_MAPR & ~(0x3 << 8))
| (1 << 8);
/*
* Set alternate function for USART1. For alt. function input
* the port is configured in either floating or pull-up/down
* input mode (ref. section 7.1.4 in datasheet RM0041):
* PA9: Tx, alt. function output
* PA10: Rx, input with pull-down
*
* note: see crosbug.com/p/12223 for more info
*/
val = STM32_GPIO_CRH(GPIO_A) & ~0x00000ff0;
val |= 0x00000890;
STM32_GPIO_CRH(GPIO_A) = val;
}
/* GPIO configuration to be done after I2C module init */
void board_i2c_post_init(int port)
{
uint32_t val;
/* enable alt. function (open-drain) */
if (port == STM32_I2C1_PORT) {
/* I2C1 is on PB6-7 */
val = STM32_GPIO_CRL(GPIO_B) & ~0xff000000;
val |= 0xdd000000;
STM32_GPIO_CRL(GPIO_B) = val;
}
}
void chipset_reset(int is_cold)
{
/* FIXME: this is just a stub for now... */
}
void kbd_power_on(enum gpio_signal signal)
{
/* FIXME: this is just a stub for now... */
}
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