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/* Copyright (c) 2012 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.
*/
/* Snow board-specific configuration */
#include "board.h"
#include "common.h"
#include "dma.h"
#include "gpio.h"
#include "i2c.h"
#include "registers.h"
#include "spi.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 interrupt handlers prototypes */
#ifndef CONFIG_TASK_GAIAPOWER
#define gaia_power_event NULL
#define gaia_suspend_event NULL
#else
void gaia_power_event(enum gpio_signal signal);
void gaia_suspend_event(enum gpio_signal signal);
#endif
#ifndef CONFIG_TASK_KEYSCAN
#define matrix_interrupt NULL
#endif
/* GPIO signal list. Must match order from enum gpio_signal. */
const struct gpio_info gpio_list[GPIO_COUNT] = {
/* Inputs with interrupt handlers are first for efficiency */
{"KB_PWR_ON_L", GPIO_B, (1<<5), GPIO_INT_BOTH, gaia_power_event},
{"PP1800_LDO2", GPIO_A, (1<<1), GPIO_INT_BOTH, gaia_power_event},
{"XPSHOLD", GPIO_A, (1<<3), GPIO_INT_RISING, gaia_power_event},
{"CHARGER_INT", GPIO_C, (1<<4), GPIO_INT_RISING, NULL},
{"LID_OPEN", GPIO_C, (1<<13), GPIO_INT_BOTH, NULL},
{"SUSPEND_L", GPIO_A, (1<<7), GPIO_INT_BOTH, gaia_suspend_event},
{"KB_IN00", GPIO_C, (1<<8), GPIO_KB_INPUT, matrix_interrupt},
{"KB_IN01", GPIO_C, (1<<9), GPIO_KB_INPUT, matrix_interrupt},
{"KB_IN02", GPIO_C, (1<<10), GPIO_KB_INPUT, matrix_interrupt},
{"KB_IN03", GPIO_C, (1<<11), GPIO_KB_INPUT, matrix_interrupt},
{"KB_IN04", GPIO_C, (1<<12), GPIO_KB_INPUT, matrix_interrupt},
{"KB_IN05", GPIO_C, (1<<14), GPIO_KB_INPUT, matrix_interrupt},
{"KB_IN06", GPIO_C, (1<<15), GPIO_KB_INPUT, matrix_interrupt},
{"KB_IN07", GPIO_D, (1<<2), GPIO_KB_INPUT, matrix_interrupt},
/* Other inputs */
{"SPI1_NSS", GPIO_A, (1<<4), GPIO_PULL_UP, NULL},
/* Outputs */
{"SPI1_MISO", GPIO_A, (1<<6), GPIO_OUT_HIGH, NULL},
{"EN_PP1350", GPIO_A, (1<<2), GPIO_OUT_LOW, NULL},
{"EN_PP5000", GPIO_A, (1<<11), GPIO_OUT_LOW, NULL},
{"EN_PP3300", GPIO_A, (1<<8), GPIO_OUT_LOW, NULL},
{"PMIC_PWRON_L",GPIO_A, (1<<12), GPIO_OUT_HIGH, NULL},
{"ENTERING_RW", GPIO_D, (1<<0), GPIO_OUT_LOW, NULL},
{"CHARGER_EN", GPIO_B, (1<<2), GPIO_OUT_LOW, NULL},
{"EC_INT", GPIO_B, (1<<9), GPIO_HI_Z, NULL},
{"CODEC_INT", GPIO_D, (1<<1), GPIO_HI_Z, NULL},
{"KB_OUT00", GPIO_B, (1<<0), GPIO_KB_OUTPUT, NULL},
{"KB_OUT01", GPIO_B, (1<<8), GPIO_KB_OUTPUT, NULL},
{"KB_OUT02", GPIO_B, (1<<12), GPIO_KB_OUTPUT, NULL},
{"KB_OUT03", GPIO_B, (1<<13), GPIO_KB_OUTPUT, NULL},
{"KB_OUT04", GPIO_B, (1<<14), GPIO_KB_OUTPUT, NULL},
{"KB_OUT05", GPIO_B, (1<<15), GPIO_KB_OUTPUT, NULL},
{"KB_OUT06", GPIO_C, (1<<0), GPIO_KB_OUTPUT, NULL},
{"KB_OUT07", GPIO_C, (1<<1), GPIO_KB_OUTPUT, NULL},
{"KB_OUT08", GPIO_C, (1<<2), GPIO_KB_OUTPUT, NULL},
{"KB_OUT09", GPIO_B, (1<<1), GPIO_KB_OUTPUT, NULL},
{"KB_OUT10", GPIO_C, (1<<5), GPIO_KB_OUTPUT, NULL},
{"KB_OUT11", GPIO_C, (1<<6), GPIO_KB_OUTPUT, NULL},
{"KB_OUT12", GPIO_C, (1<<7), GPIO_KB_OUTPUT, NULL},
};
#ifdef CONFIG_I2C_HOST_AUTO
static int i2c_host_port = -1;
/* Detect if tps65090 pmu is present on a i2c bus.
* This hack makes one single ec binary to work on boards with different
* stuffing options.
*
* TODO: Revert i2c host port detection after all dev boards been reworked or
* deprecated. Issue: http://crosbug.com/p/10622
*/
static int tps65090_is_present(int bus)
{
const int tps65090_addr = 0x90;
const int charger_ctrl_offset0 = 4;
int rv, reg;
rv = i2c_read8(bus, tps65090_addr, charger_ctrl_offset0, ®);
if (rv == EC_SUCCESS)
return 1;
return 0;
}
int board_i2c_host_port(void)
{
/* Default I2C host configuration is I2C1(0).
* If PMU doesn't ack on I2C2(1), set the host port to 0.
*/
if (i2c_host_port == -1)
i2c_host_port = tps65090_is_present(1) ? 1 : 0;
return i2c_host_port;
}
#endif /* CONFIG_I2C_HOST_AUTO */
void configure_board(void)
{
uint32_t val;
dma_init();
/* Enable all GPIOs clocks
* TODO: more fine-grained enabling for power saving
*/
STM32_RCC_APB2ENR |= 0x1fd;
/* Enable SPI */
STM32_RCC_APB2ENR |= (1<<12);
/* 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 power LED to alternate function to be driven by TIM2/PWM */
val = STM32_GPIO_CRL_OFF(GPIO_B) & ~0x0000f000;
val |= 0x00009000;
STM32_GPIO_CRL_OFF(GPIO_B) = val;
/*
* I2C SCL/SDA on PB10-11 and PB6-7, bi-directional, no pull-up/down,
* initialized as hi-Z until alt. function is set
*/
val = STM32_GPIO_CRH_OFF(GPIO_B) & ~0x0000ff00;
val |= 0x0000dd00;
STM32_GPIO_CRH_OFF(GPIO_B) = val;
val = STM32_GPIO_CRL_OFF(GPIO_B) & ~0xff000000;
val |= 0xdd000000;
STM32_GPIO_CRL_OFF(GPIO_B) = val;
STM32_GPIO_BSRR_OFF(GPIO_B) |= (1<<11) | (1<<10) | (1<<7) | (1<<6);
/* Select Alternate function for USART1 on pins PA9/PA10 */
val = STM32_GPIO_CRH_OFF(GPIO_A) & ~0x00000ff0;
val |= 0x00000990;
STM32_GPIO_CRH_OFF(GPIO_A) = val;
/* EC_INT is output, open-drain */
val = STM32_GPIO_CRH_OFF(GPIO_B) & ~0xf0;
val |= 0x50;
STM32_GPIO_CRH_OFF(GPIO_B) = val;
/* put GPIO in Hi-Z state */
gpio_set_level(GPIO_EC_INT, 1);
}
void board_interrupt_host(int active)
{
/* interrupt host by using active low EC_INT signal */
gpio_set_level(GPIO_EC_INT, !active);
}
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