/* EVT1 */
static int evt1_board_init(struct ara_board_info *board_info) {
int rc;
/* For now, just always enable REFCLK_MAIN and the buffers. */
rc = vreg_config(&refclk_main_vreg) || vreg_get(&refclk_main_vreg);
if (rc) {
dbg_error("%s: can't start REFCLK_MAIN: %d\n", __func__, rc);
return ERROR;
}
/* Configure the switch power supply lines. */
rc = vreg_config(&sw_vreg);
if (rc) {
dbg_error("%s: can't configure switch regulators: %d\n", __func__, rc);
return ERROR;
}
stm32_configgpio(evt1_board_info.sw_data.gpio_reset);
up_udelay(POWER_SWITCH_OFF_STAB_TIME_US);
/* Configure the wake/detect lines. */
stm32_configgpio(WD_1_DET_IN_GPIO);
stm32_configgpio(WD_2_DET_IN_GPIO);
stm32_configgpio(WD_3A_DET_IN_GPIO);
stm32_configgpio(WD_3B_DET_IN_GPIO);
stm32_configgpio(WD_4A_DET_IN_GPIO);
stm32_configgpio(WD_4B_DET_IN_GPIO);
stm32_configgpio(WD_5_DET_IN_GPIO);
stm32_configgpio(WD_8A_DET_IN_GPIO);
stm32_configgpio(WD_8B_DET_IN_GPIO);
/* Configure the module release pins */
stm32_configgpio(MOD_RELEASE_1_CONFIG);
stm32_configgpio(MOD_RELEASE_2_CONFIG);
stm32_configgpio(MOD_RELEASE_3A_CONFIG);
stm32_configgpio(MOD_RELEASE_3B_CONFIG);
stm32_configgpio(MOD_RELEASE_4A_CONFIG);
stm32_configgpio(MOD_RELEASE_4B_CONFIG);
stm32_configgpio(MOD_RELEASE_5_CONFIG);
/* Configure ARA key input pin */
stm32_configgpio(ARA_KEY_CONFIG);
/*
* (Module hotplug pins unconfigured. TODO, part of SW-1942.)
*/
return 0;
}
/**
* @brief Configure all the voltage regulators associated with an interface
* to their default states.
* @param iface interface to configure
*/
static int interface_config(struct interface *iface)
{
int rc = 0;
dbg_verbose("Configuring interface %s.\n",
iface->name ? iface->name : "unknown");
/* Configure default state for the regulator pins */
rc = vreg_config(iface->vreg);
/*
* Configure WAKEOUT as input, floating so that it does not interfere
* with the wake and detect input pin
*/
if (iface->wake_out) {
if (stm32_configgpio(iface->wake_out | GPIO_INPUT) < 0) {
dbg_error("%s: Failed to configure WAKEOUT pin for interface %s\n",
__func__, iface->name ? iface->name : "unknown");
rc = -1;
}
}
iface->power_state = false;
return rc;
}
struct ara_board_info *board_init(void) {
int i;
/* Pretty lights */
stm32_configgpio(SVC_LED_GREEN);
stm32_gpiowrite(SVC_LED_GREEN, false);
/* Disable these for now */
stm32_configgpio(SVC_RST_IOEXP);
stm32_gpiowrite(SVC_RST_IOEXP, false);
/*
* Register the STM32 GPIOs to Gpio Chip
*
* This needs to happen before the I/O Expanders registration, which
* uses some STM32 pins
*/
stm32_gpio_init();
/*
* Configure the switch and I/O Expander reset and power supply lines.
* Hold all the lines low while we turn on the power rails.
*/
vreg_config(&ioexp_vreg);
vreg_config(&sw_vreg);
stm32_configgpio(sdb_board_info.sw_data.gpio_reset);
up_udelay(POWER_SWITCH_OFF_STAB_TIME_US);
/*
* Enable 1P1 and 1P8, used by the I/O Expanders
*/
vreg_get(&ioexp_vreg);
/* Register the TCA64xx I/O Expanders GPIOs to Gpio Chip */
for (i = 0; i < sdb_board_info.nr_io_expanders; i++) {
struct io_expander_info *io_exp = &sdb_board_info.io_expanders[i];
io_exp->i2c_dev = up_i2cinitialize(io_exp->i2c_bus);
if (!io_exp->i2c_dev) {
dbg_error("%s(): Failed to get I/O Expander I2C bus %u\n",
__func__, io_exp->i2c_bus);
} else {
if (tca64xx_init(&io_exp->io_exp_driver_data,
io_exp->part,
io_exp->i2c_dev,
io_exp->i2c_addr,
io_exp->reset,
io_exp->irq,
io_exp->gpio_base) < 0) {
dbg_error("%s(): Failed to register I/O Expander(0x%02x)\n",
__func__, io_exp->i2c_addr);
up_i2cuninitialize(io_exp->i2c_dev);
}
}
}
/* Hold USB_HUB_RESET high */
gpio_direction_out(USB_HUB_RESET, 1);
return &sdb_board_info;
}
/* EVT1.5 */
static int evt1_5_board_init(struct ara_board_info *board_info) {
int rc;
/*
* VSYS and VCHG are active high with a pull-up.
* Initialize these lines as output low to prevent any spurious
* activation at boot time.
*/
gpio_direction_out(VSYS_EN1_N, 0);
gpio_direction_out(VSYS_EN2_N, 0);
gpio_direction_out(VSYS_EN3A_N, 0);
gpio_direction_out(VSYS_EN3B_N, 0);
gpio_direction_out(VSYS_EN4A_N, 0);
gpio_direction_out(VSYS_EN4B_N, 0);
gpio_direction_out(VSYS_EN5_N, 0);
gpio_direction_out(VCHG_EN1_N, 0);
gpio_direction_out(VCHG_EN2_N, 0);
gpio_direction_out(VCHG_EN3A_N, 0);
gpio_direction_out(VCHG_EN3B_N, 0);
gpio_direction_out(VCHG_EN4A_N, 0);
gpio_direction_out(VCHG_EN4B_N, 0);
gpio_direction_out(VCHG_EN5_N, 0);
/* For now, just always enable REFCLK_MAIN and the buffers. */
rc = vreg_config(&refclk_main_vreg) || vreg_get(&refclk_main_vreg);
if (rc) {
dbg_error("%s: can't start REFCLK_MAIN: %d\n", __func__, rc);
return ERROR;
}
/* Configure Switch Standby Boot line */
stm32_configgpio(SW_STANDBY_N);
/* Configure the switch power supply lines. */
rc = vreg_config(&sw_vreg);
if (rc) {
dbg_error("%s: can't configure switch regulators: %d\n", __func__, rc);
return ERROR;
}
stm32_configgpio(evt1_5_board_info.sw_data.gpio_reset);
up_udelay(POWER_SWITCH_OFF_STAB_TIME_US);
/* Configure the wake/detect lines. */
stm32_configgpio(WD_1_DET_IN_GPIO);
stm32_configgpio(WD_2_DET_IN_GPIO);
stm32_configgpio(WD_3A_DET_IN_GPIO);
stm32_configgpio(WD_3B_DET_IN_GPIO);
stm32_configgpio(WD_4A_DET_IN_GPIO);
stm32_configgpio(WD_4B_DET_IN_GPIO);
stm32_configgpio(WD_5_DET_IN_GPIO);
stm32_configgpio(WD_8A_DET_IN_GPIO);
stm32_configgpio(WD_8B_DET_IN_GPIO);
/* Configure the module release pins */
stm32_configgpio(MOD_RELEASE_1_CONFIG);
stm32_configgpio(MOD_RELEASE_2_CONFIG);
stm32_configgpio(MOD_RELEASE_3A_CONFIG);
stm32_configgpio(MOD_RELEASE_3B_CONFIG);
stm32_configgpio(MOD_RELEASE_4A_CONFIG);
stm32_configgpio(MOD_RELEASE_4B_CONFIG);
stm32_configgpio(MOD_RELEASE_5_CONFIG);
/* Configure ARA key input pin */
stm32_configgpio(ARA_KEY_CONFIG);
/*
* (Module hotplug pins unconfigured. TODO, part of SW-1942.)
*/
/* Configure AP Wake from OFF pin */
gpio_set_value(PM_CBL_PWR_N_GPIO, 1);
gpio_direction_out(PM_CBL_PWR_N_GPIO, 1);
return 0;
}
struct ara_board_info *board_init(void) {
int i;
int rc;
/* Disable the I/O expanders for now. */
stm32_configgpio(SVC_RST_IOEXP1_GPIO);
stm32_configgpio(SVC_RST_IOEXP2_GPIO);
stm32_gpiowrite(SVC_RST_IOEXP1_GPIO, false);
stm32_gpiowrite(SVC_RST_IOEXP2_GPIO, false);
/*
* Register STM32 GPIOs to GPIO chip framework. This has to happen
* before the following configuration, which depends on STM32 GPIO
* pin numbers.
*/
stm32_gpio_init();
/* Register the TCA64xx I/O Expanders to the gpio chip core. */
for (i = 0; i < evt1_board_info.nr_io_expanders; i++) {
struct io_expander_info *io_exp = &evt1_board_info.io_expanders[i];
io_exp->i2c_dev = up_i2cinitialize(io_exp->i2c_bus);
if (!io_exp->i2c_dev) {
dbg_error("%s(): Failed to get I/O Expander I2C bus %u\n",
__func__, io_exp->i2c_bus);
board_exit();
return NULL;
}
if (tca64xx_init(&io_exp->io_exp_driver_data,
io_exp->part,
io_exp->i2c_dev,
io_exp->i2c_addr,
io_exp->reset,
io_exp->irq,
io_exp->gpio_base) < 0) {
dbg_error("%s(): Failed to register I/O Expander(0x%02x)\n",
__func__, io_exp->i2c_addr);
board_exit();
return NULL;
}
}
/* For now, just always enable REFCLK_MAIN and the buffers. */
rc = vreg_config(&refclk_main_vreg) || vreg_get(&refclk_main_vreg);
if (rc) {
dbg_error("%s: can't start REFCLK_MAIN: %d\n", __func__, rc);
board_exit();
return NULL;
}
/* Configure the switch power supply lines. */
rc = vreg_config(&sw_vreg);
if (rc) {
dbg_error("%s: can't configure switch regulators: %d\n", __func__, rc);
board_exit();
return NULL;
}
stm32_configgpio(evt1_board_info.sw_data.gpio_reset);
up_udelay(POWER_SWITCH_OFF_STAB_TIME_US);
/* Configure the wake/detect lines. */
stm32_configgpio(WD_1_DET_IN_GPIO);
stm32_configgpio(WD_2_DET_IN_GPIO);
stm32_configgpio(WD_3A_DET_IN_GPIO);
stm32_configgpio(WD_3B_DET_IN_GPIO);
stm32_configgpio(WD_4A_DET_IN_GPIO);
stm32_configgpio(WD_4B_DET_IN_GPIO);
stm32_configgpio(WD_5_DET_IN_GPIO);
stm32_configgpio(WD_8A_DET_IN_GPIO);
stm32_configgpio(WD_8B_DET_IN_GPIO);
/* Configure the ARA key. */
stm32_configgpio(ARA_KEY_GPIO);
/*
* (Module hotplug pins unconfigured. TODO, part of SW-1942.)
*/
return &evt1_board_info;
}
