void ara_board_exit(void) {
int i;
/* Run the board specific code */
if (board_info->board_exit) {
board_info->board_exit(board_info);
}
/*
* First unregister the TCA64xx I/O Expanders and associated I2C bus(ses).
* Done in reverse order from registration to account for IRQ chaining
* between I/O Expander chips.
*/
for (i = board_info->nr_io_expanders - 1; i >= 0; i--) {
struct io_expander_info *io_exp = &board_info->io_expanders[i];
if (io_exp->io_exp_driver_data)
tca64xx_deinit(io_exp->io_exp_driver_data);
if (io_exp->i2c_dev)
up_i2cuninitialize(io_exp->i2c_dev);
}
/* Lastly unregister the GPIO Chip driver */
stm32_gpio_deinit();
board_info = NULL;
}
void board_exit(void) {
int i;
/* If we were able to bringup the refclk, turn it off now. */
if (vreg_get_pwr_state(&refclk_main_vreg) == VREG_PWR_UP) {
vreg_put(&refclk_main_vreg);
}
/*
* Unregister the TCA64xx I/O Expanders and associated I2C
* bus(ses). Done in reverse order from registration to account
* for IRQ chaining between I/O Expander chips.
*/
for (i = evt1_board_info.nr_io_expanders - 1; i >= 0; i--) {
struct io_expander_info *io_exp = &evt1_board_info.io_expanders[i];
if (io_exp->io_exp_driver_data)
tca64xx_deinit(io_exp->io_exp_driver_data);
if (io_exp->i2c_dev)
up_i2cuninitialize(io_exp->i2c_dev);
}
/* Lastly unregister the GPIO Chip driver */
stm32_gpio_deinit();
}
void board_exit(void) {
int i;
/*
* First unregister the TCA64xx I/O Expanders and associated I2C bus(ses).
* Done in reverse order from registration to account for IRQ chaining
* between I/O Expander chips.
*/
for (i = sdb_board_info.nr_io_expanders - 1; i >= 0; i--) {
struct io_expander_info *io_exp = &sdb_board_info.io_expanders[i];
if (io_exp->io_exp_driver_data)
tca64xx_deinit(io_exp->io_exp_driver_data);
if (io_exp->i2c_dev)
up_i2cuninitialize(io_exp->i2c_dev);
}
/* Disable the I/O Expanders power */
vreg_put(&ioexp_vreg);
/* Lastly unregister the GPIO Chip driver */
stm32_gpio_deinit();
}
struct ara_board_info *ara_board_init(void) {
int i;
enum hwid hwid = board_get_hwid();
board_info = NULL;
/* Check HWID, assign board_info struct and the Switch ES revision */
switch (hwid) {
case HWID_DB3_0_1:
board_info = &db3_board_info;
dbg_info("HWID found as DB3.0/3.1\n");
break;
case HWID_DB3_2:
/* DB3.0/1 with ES3 Switch */
board_info = &db3_board_info;
board_info->sw_data.rev = SWITCH_REV_ES3;
dbg_info("HWID found as DB3.2\n");
break;
case HWID_DB3_5:
/* EVT1.5 + DB3.5 pwrmon + specific mapping of physical interfaces */
board_info = &evt1_5_board_info;
board_info->pwrmon = &db3_5_pwrmon;
board_info->interfaces = db3_5_interfaces;
board_info->nr_interfaces = db3_5_nr_interfaces;
dbg_info("HWID found as DB3.5\n");
break;
case HWID_EVT1:
board_info = &evt1_board_info;
dbg_info("HWID found as EVT1\n");
break;
case HWID_EVT1_5:
board_info = &evt1_5_board_info;
dbg_info("HWID found as EVT1.5\n");
break;
case HWID_EVT1_6:
board_info = &evt1_5_board_info;
board_info->sw_data.rev = SWITCH_REV_ES2;
dbg_info("HWID found as EVT1.6\n");
break;
default:
return NULL;
}
/* Disable the I/O Expanders for now */
for (i = 0; i < board_info->nr_io_expanders; i++) {
struct io_expander_info *io_exp = &board_info->io_expanders[i];
stm32_configgpio(io_exp->reset);
stm32_gpiowrite(io_exp->reset, 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();
/* Register the TCA64xx I/O Expanders GPIOs to Gpio Chip */
for (i = 0; i < board_info->nr_io_expanders; i++) {
struct io_expander_info *io_exp = &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);
goto err_deinit_gpio;
} 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);
goto err_uninit_i2c;
}
}
}
/* Run the board specific code */
if (board_info->board_init) {
if (board_info->board_init(board_info)) {
dbg_error("%s(): Failed to initalize board\n", __func__);
goto err_uninit_i2c;
}
}
/* Return the board specific info */
return board_info;
err_uninit_i2c:
/* Done in reverse order to account for possible IRQ chaining. */
for (i = board_info->nr_io_expanders - 1; i >= 0; i--) {
struct io_expander_info *io_exp = &board_info->io_expanders[i];
if (io_exp->i2c_dev) {
up_i2cuninitialize(io_exp->i2c_dev);
}
}
err_deinit_gpio:
stm32_gpio_deinit();
/* Leave the I/O expanders in reset here. */
return NULL;
}
