/**
* Define one IRQ function to handle all GPIO interrupts. The IRQ determines
* the interrupt number which was triggered, calls the master handler above,
* and clears status registers.
*/
static void __gpio_irq(void)
{
/* Determine interrupt number. */
int irq = intc_get_ec_int();
#ifdef HAS_TASK_KEYSCAN
if (irq == IT83XX_IRQ_WKINTC) {
keyboard_raw_interrupt();
return;
}
#endif
if (irq == IT83XX_IRQ_WKINTAD) {
IT83XX_WUC_WUESR4 = 0xff;
task_clear_pending_irq(IT83XX_IRQ_WKINTAD);
return;
}
/*
* Clear the WUC status register. Note the external pin first goes
* to the WUC module and is always edge triggered.
*/
*(wuesr(gpio_irqs[irq].wuc_group)) = gpio_irqs[irq].wuc_mask;
/*
* Clear the interrupt controller status register. Note the interrupt
* controller is level triggered from the WUC status.
*/
task_clear_pending_irq(irq);
/* Run the GPIO master handler above with corresponding port/mask. */
gpio_interrupt(gpio_irqs[irq].gpio_port, gpio_irqs[irq].gpio_mask);
}
void pd_adc_interrupt(void)
{
/* Clear flags */
STM32_ADC_ISR = 0x8e;
if (discharge_is_enabled()) {
if (discharge_volt_idx != volt_idx) {
/* first step of the discharge completed: now 12V->5V */
volt_idx = PDO_IDX_5V;
set_output_voltage(VO_5V);
discharge_voltage(voltages[PDO_IDX_5V].ovp);
} else { /* discharge complete */
discharge_disable();
/* enable over-current monitoring */
adc_enable_watchdog(ADC_CH_A_SENSE,
MAX_CURRENT_FAST, 0);
}
} else {/* Over-current detection */
/* cut the power output */
pd_power_supply_reset(0);
/* record a special fault */
fault = FAULT_FAST_OCP;
/* pd_board_checks() will record the timeout later */
}
/* clear ADC irq so we don't get a second interrupt */
task_clear_pending_irq(STM32_IRQ_ADC_COMP);
}
static void chip_pd_irq(enum usbpd_port port)
{
task_clear_pending_irq(usbpd_ctrl_regs[port].irq);
/* check status */
if (USBPD_IS_HARD_RESET_DETECT(port)) {
/* clear interrupt */
IT83XX_USBPD_ISR(port) = USBPD_REG_MASK_HARD_RESET_DETECT;
task_set_event(PD_PORT_TO_TASK_ID(port),
PD_EVENT_TCPC_RESET, 0);
} else {
if (USBPD_IS_RX_DONE(port)) {
/* mask RX done interrupt */
IT83XX_USBPD_IMR(port) |= USBPD_REG_MASK_MSG_RX_DONE;
/* clear RX done interrupt */
IT83XX_USBPD_ISR(port) = USBPD_REG_MASK_MSG_RX_DONE;
task_set_event(PD_PORT_TO_TASK_ID(port),
PD_EVENT_RX, 0);
}
if (USBPD_IS_TX_DONE(port)) {
/* clear TX done interrupt */
IT83XX_USBPD_ISR(port) = USBPD_REG_MASK_MSG_TX_DONE;
task_set_event(PD_PORT_TO_TASK_ID(port),
TASK_EVENT_PHY_TX_DONE, 0);
}
}
}
static void ext_timer_ctrl(enum ext_timer_sel ext_timer,
enum ext_timer_clock_source ext_timer_clock,
int start,
int with_int,
int32_t count)
{
uint8_t intc_mask;
/* rising-edge-triggered */
intc_mask = et_ctrl_regs[ext_timer].mask;
*et_ctrl_regs[ext_timer].mode |= intc_mask;
*et_ctrl_regs[ext_timer].polarity &= ~intc_mask;
/* clear interrupt status */
task_clear_pending_irq(et_ctrl_regs[ext_timer].irq);
/* These bits control the clock input source to the exttimer 3 - 8 */
IT83XX_ETWD_ETXPSR(ext_timer) = ext_timer_clock;
/* The count number of external timer n. */
IT83XX_ETWD_ETXCNTLR(ext_timer) = count;
ext_timer_stop(ext_timer, 0);
if (start)
ext_timer_start(ext_timer, 0);
if (with_int)
task_enable_irq(et_ctrl_regs[ext_timer].irq);
else
task_disable_irq(et_ctrl_regs[ext_timer].irq);
}
void lpc_keyboard_put_char(uint8_t chr, int send_irq)
{
/* Clear programming data bit 7-4 */
IT83XX_KBC_KBHISR &= 0x0F;
/* keyboard */
IT83XX_KBC_KBHISR |= 0x10;
/*
* bit0 = 0, The IRQ1 is controlled by the IRQ1B bit in KBIRQR.
* bit1 = 0, The IRQ12 is controlled by the IRQ12B bit in KBIRQR.
*/
IT83XX_KBC_KBHICR &= 0xFC;
/*
* Enable the interrupt to keyboard driver in the host processor
* via SERIRQ when the output buffer is full.
*/
if (send_irq)
IT83XX_KBC_KBHICR |= 0x01;
udelay(16);
task_clear_pending_irq(IT83XX_IRQ_KBC_OUT);
/* The data output to the KBC Data Output Register. */
IT83XX_KBC_KBHIKDOR = chr;
task_enable_irq(IT83XX_IRQ_KBC_OUT);
}
void pm1_ibf_interrupt(void)
{
int is_cmd;
uint8_t value, result;
if (pm_get_status(LPC_ACPI_CMD) & EC_LPC_STATUS_FROM_HOST) {
/* Set the busy bit */
pm_set_status(LPC_ACPI_CMD, EC_LPC_STATUS_PROCESSING, 1);
/* data from command port or data port */
is_cmd = pm_get_status(LPC_ACPI_CMD) & EC_LPC_STATUS_LAST_CMD;
/* Get command or data */
value = pm_get_data_in(LPC_ACPI_CMD);
/* Handle whatever this was. */
if (acpi_ap_to_ec(is_cmd, value, &result))
pm_put_data_out(LPC_ACPI_CMD, result);
/* Clear the busy bit */
pm_set_status(LPC_ACPI_CMD, EC_LPC_STATUS_PROCESSING, 0);
/*
* ACPI 5.0-12.6.1: Generate SCI for Input Buffer Empty
* Output Buffer Full condition on the kernel channel.
*/
lpc_generate_sci();
}
task_clear_pending_irq(IT83XX_IRQ_PMC_IN);
}
void pm3_ibf_interrupt(void)
{
if (pm_get_status(LPC_HOST_PORT_80H) & EC_LPC_STATUS_FROM_HOST)
port_80_write(pm_get_data_in(LPC_HOST_PORT_80H));
task_clear_pending_irq(IT83XX_IRQ_PMC3_IN);
}
void pm3_ibf_interrupt(void)
{
int new_p80_idx, i;
enum ec2i_message ec2i_r;
/* set LDN */
if (ec2i_write(HOST_INDEX_LDN, LDN_RTCT) == EC2I_WRITE_SUCCESS) {
/* get P80L current index */
ec2i_r = ec2i_read(HOST_INDEX_DSLDC6);
/* clear IBF */
pm_clear_ibf(LPC_HOST_PORT_80H);
/* read OK */
if ((ec2i_r & 0xff00) == EC2I_READ_SUCCESS) {
new_p80_idx = ec2i_r & P80L_BRAM_BANK1_SIZE_MASK;
for (i = 0; i < (P80L_P80LE - P80L_P80LB + 1); i++) {
if (++p80l_index > P80L_P80LE)
p80l_index = P80L_P80LB;
port_80_write(IT83XX_BRAM_BANK1(p80l_index));
if (p80l_index == new_p80_idx)
break;
}
}
} else {
pm_clear_ibf(LPC_HOST_PORT_80H);
}
task_clear_pending_irq(IT83XX_IRQ_PMC3_IN);
}
/**
* Define one IRQ function to handle all GPIO interrupts. The IRQ determines
* the interrupt number which was triggered, calls the master handler above,
* and clears status registers.
*/
static void __gpio_irq(void)
{
/* Determine interrupt number. */
int irq = IT83XX_INTC_IVCT2 - 16;
#if defined(HAS_TASK_KEYSCAN) && defined(CONFIG_IT83XX_KEYBOARD_KSI_WUC_INT)
if (irq == IT83XX_IRQ_WKINTC) {
keyboard_raw_interrupt();
return;
}
#endif
/* Run the GPIO master handler above with corresponding port/mask. */
gpio_interrupt(gpio_irqs[irq].gpio_port, gpio_irqs[irq].gpio_mask);
/*
* Clear the WUC status register. Note the external pin first goes
* to the WUC module and is always edge triggered.
*/
*(wuesr(gpio_irqs[irq].wuc_group)) = gpio_irqs[irq].wuc_mask;
/*
* Clear the interrupt controller status register. Note the interrupt
* controller is level triggered from the WUC status.
*/
task_clear_pending_irq(irq);
}
void keyboard_raw_enable_interrupt(int enable)
{
if (enable) {
task_clear_pending_irq(MEC1322_IRQ_KSC_INT);
task_enable_irq(MEC1322_IRQ_KSC_INT);
} else {
task_disable_irq(MEC1322_IRQ_KSC_INT);
}
}
void ext_timer_start(enum ext_timer_sel ext_timer, int en_irq)
{
/* enable external timer n */
IT83XX_ETWD_ETXCTRL(ext_timer) |= 0x03;
if (en_irq) {
task_clear_pending_irq(et_ctrl_regs[ext_timer].irq);
task_enable_irq(et_ctrl_regs[ext_timer].irq);
}
}
int gpio_clear_pending_interrupt(enum gpio_signal signal)
{
int irq = gpio_to_irq(gpio_list[signal].port, gpio_list[signal].mask);
if (irq == -1)
return EC_ERROR_UNKNOWN;
*(wuesr(gpio_irqs[irq].wuc_group)) = gpio_irqs[irq].wuc_mask;
task_clear_pending_irq(irq);
return EC_SUCCESS;
}
/* KBC and PMC control modules */
void lpc_kbc_ibf_interrupt(void)
{
if (lpc_keyboard_input_pending()) {
keyboard_host_write(IT83XX_KBC_KBHIDIR,
(IT83XX_KBC_KBHISR & 0x08) ? 1 : 0);
}
task_clear_pending_irq(IT83XX_IRQ_KBC_IN);
#ifdef HAS_TASK_KEYPROTO
task_wake(TASK_ID_KEYPROTO);
#endif
}
void tim2_interrupt(void)
{
uint32_t stat = STM32_TIM_SR(2);
if (stat & 2) { /* Event match */
/* disable match interrupt but keep update interrupt */
STM32_TIM_DIER(2) = 1;
last_event = TASK_EVENT_TIMER;
}
if (stat & 1) /* Counter overflow */
clksrc_high++;
STM32_TIM_SR(2) = ~stat & 3; /* clear interrupt flags */
task_clear_pending_irq(STM32_IRQ_TIM2);
}
void lpc_kbc_obe_interrupt(void)
{
task_disable_irq(IT83XX_IRQ_KBC_OUT);
task_clear_pending_irq(IT83XX_IRQ_KBC_OUT);
if (!(IT83XX_KBC_KBHICR & 0x01)) {
IT83XX_KBC_KBIRQR &= ~0x01;
IT83XX_KBC_KBHICR |= 0x01;
}
#ifdef HAS_TASK_KEYPROTO
task_wake(TASK_ID_KEYPROTO);
#endif
}
void i2c_interrupt(int port)
{
int id = pdata[port].task_waiting;
/* Clear the interrupt status */
task_clear_pending_irq(i2c_ctrl_regs[port].irq);
/* If no task is waiting, just return */
if (id == TASK_ID_INVALID)
return;
/* If done doing work, wake up the task waiting for the transfer */
if (!i2c_transaction(port)) {
task_disable_irq(i2c_ctrl_regs[port].irq);
task_set_event(id, TASK_EVENT_I2C_IDLE, 0);
}
}
void lpc_keyboard_resume_irq(void)
{
if (lpc_keyboard_has_char()) {
/* The IRQ1 is controlled by the IRQ1B bit in KBIRQR. */
IT83XX_KBC_KBHICR &= ~0x01;
/*
* When the OBFKIE bit in KBC Host Interface Control Register
* (KBHICR) is 0, the bit directly controls the IRQ1 signal.
*/
IT83XX_KBC_KBIRQR |= 0x01;
task_clear_pending_irq(IT83XX_IRQ_KBC_OUT);
task_enable_irq(IT83XX_IRQ_KBC_OUT);
}
}
void spi_slave_init(void)
{
stm32_spi_regs_t *spi = STM32_SPI1_REGS;
/*
* MISO: AFIO Push-pull
*/
STM32_GPIO_CRL(GPIO_A) = (STM32_GPIO_CRL(GPIO_A) & 0xfff0ffff) |
0x000b0000;
/* Set DFF to 8-bit (default) */
/* Set CPOL and CPHA (default) */
/* Configure LSBFIRST (default) */
/* Set SSM and clear SSI */
spi->cr1 |= STM32_SPI_CR1_SSM;
spi->cr1 &= ~STM32_SPI_CR1_SSI;
/* Enable RXNE interrupt */
spi->cr2 |= STM32_SPI_CR2_RXNEIE;
/*task_enable_irq(STM32_IRQ_SPI1);*/
/* Enable TX and RX DMA */
spi->cr2 |= STM32_SPI_CR2_TXDMAEN | STM32_SPI_CR2_RXDMAEN;
/* Clear MSTR */
spi->cr1 &= ~STM32_SPI_CR1_MSTR;
/* Enable CRC */
spi->cr1 |= STM32_SPI_CR1_CRCEN;
/* Set SPE */
spi->cr1 |= STM32_SPI_CR1_SPE;
/* Dummy byte to clock out when the next packet comes in */
spi->dr = DUMMY_DATA;
/* Enable interrupt on PA0 (GPIO_SPI_NSS) */
STM32_AFIO_EXTICR(0) &= ~0xF;
STM32_EXTI_IMR |= (1 << 0);
task_clear_pending_irq(STM32_IRQ_EXTI0);
task_enable_irq(STM32_IRQ_EXTI0);
}
static void free_run_timer_overflow(void)
{
/*
* If timer 4 (TIMER_H) counter register != 0xffffffff.
* This usually happens once after sysjump, force time, and etc.
* (when __hw_clock_source_set is called and param 'ts' != 0)
*/
if (IT83XX_ETWD_ETXCNTLR(FREE_EXT_TIMER_H) != 0xffffffff) {
/* set timer counter register */
IT83XX_ETWD_ETXCNTLR(FREE_EXT_TIMER_H) = 0xffffffff;
/* bit[1], timer reset */
IT83XX_ETWD_ETXCTRL(FREE_EXT_TIMER_L) |= (1 << 1);
}
/* w/c interrupt status */
task_clear_pending_irq(et_ctrl_regs[FREE_EXT_TIMER_H].irq);
/* timer overflow */
process_timers(1);
update_exc_start_time();
}
int chip_i2c_xfer(int port, int slave_addr, const uint8_t *out, int out_size,
uint8_t *in, int in_size, int flags)
{
struct i2c_port_data *pd = pdata + port;
uint32_t events = 0;
if (out_size == 0 && in_size == 0)
return EC_SUCCESS;
if (pd->i2ccs) {
if ((flags & I2C_XFER_SINGLE) == I2C_XFER_SINGLE)
flags &= ~I2C_XFER_START;
}
/* Copy data to port struct */
pd->out = out;
pd->out_size = out_size;
pd->in = in;
pd->in_size = in_size;
pd->flags = flags;
pd->widx = 0;
pd->ridx = 0;
pd->err = 0;
pd->addr = slave_addr;
if (port < I2C_STANDARD_PORT_COUNT) {
/* Make sure we're in a good state to start */
if ((flags & I2C_XFER_START) && (i2c_is_busy(port)
|| (IT83XX_SMB_HOSTA(port) & HOSTA_ALL_WC_BIT)
|| (i2c_get_line_levels(port) != I2C_LINE_IDLE))) {
/* Attempt to unwedge the port. */
i2c_unwedge(port);
/* reset i2c port */
i2c_reset(port, I2C_RC_NO_IDLE_FOR_START);
}
} else {
/* Make sure we're in a good state to start */
if ((flags & I2C_XFER_START) && (i2c_is_busy(port)
|| (i2c_get_line_levels(port) != I2C_LINE_IDLE))) {
/* Attempt to unwedge the port. */
i2c_unwedge(port);
/* reset i2c port */
i2c_reset(port, I2C_RC_NO_IDLE_FOR_START);
}
}
pd->task_waiting = task_get_current();
if (pd->flags & I2C_XFER_START) {
pd->i2ccs = I2C_CH_NORMAL;
/* enable i2c interrupt */
task_clear_pending_irq(i2c_ctrl_regs[port].irq);
task_enable_irq(i2c_ctrl_regs[port].irq);
}
/* Start transaction */
i2c_transaction(port);
/* Wait for transfer complete or timeout */
events = task_wait_event_mask(TASK_EVENT_I2C_IDLE, pd->timeout_us);
/* disable i2c interrupt */
task_disable_irq(i2c_ctrl_regs[port].irq);
pd->task_waiting = TASK_ID_INVALID;
/* Handle timeout */
if (!(events & TASK_EVENT_I2C_IDLE)) {
pd->err = EC_ERROR_TIMEOUT;
/* reset i2c port */
i2c_reset(port, I2C_RC_TIMEOUT);
}
/* reset i2c channel status */
if (pd->err)
pd->i2ccs = I2C_CH_NORMAL;
return pd->err;
}
static int enhanced_i2c_tran_read(int p)
{
struct i2c_port_data *pd = pdata + p;
uint8_t in_data = 0;
int p_ch;
/* Shift register */
p_ch = i2c_ch_reg_shift(p);
if (pd->flags & I2C_XFER_START) {
/* clear start flag */
pd->flags &= ~I2C_XFER_START;
/* reset channel */
i2c_reset(p, 0);
/* Direct read */
pd->i2ccs = I2C_CH_WAIT_READ;
/* Send ID */
i2c_pio_trans_data(p, RX_DIRECT, (pd->addr + 1), 1);
} else {
if (pd->i2ccs) {
if (pd->i2ccs == I2C_CH_REPEAT_START) {
pd->i2ccs = I2C_CH_NORMAL;
/* Receive data */
i2c_pio_trans_data(p, RX_DIRECT, in_data, 0);
} else if (pd->i2ccs == I2C_CH_WAIT_READ) {
pd->i2ccs = I2C_CH_NORMAL;
/*
* If device doesn't response ack, reset
* the channel and abort the transaction.
*/
if (!(IT83XX_I2C_STR(p_ch) & E_HOSTA_ACK)) {
pd->err = E_HOSTA_ACK;
i2c_reset(p, 0);
/* Disable i2c module */
IT83XX_I2C_CTR1(p_ch) = 0x00;
return 0;
}
/* Receive data */
i2c_pio_trans_data(p, RX_DIRECT, in_data, 0);
/* Direct write with direct read protocol */
task_clear_pending_irq(i2c_ctrl_regs[p].irq);
/* Turn on irq before next direct read */
task_enable_irq(i2c_ctrl_regs[p].irq);
} else {
/* Write to read */
pd->i2ccs = I2C_CH_WAIT_READ;
/* Send ID */
i2c_pio_trans_data(p, RX_DIRECT,
(pd->addr + 1), 1);
/* Direct write with direct read protocol */
task_clear_pending_irq(i2c_ctrl_regs[p].irq);
/* Turn on irq before next direct read */
task_enable_irq(i2c_ctrl_regs[p].irq);
}
} else {
/* Wait for byte done */
if (!(IT83XX_I2C_STR(p_ch) & E_HOSTA_BDS))
return 1;
if (pd->ridx < pd->in_size) {
/* read data */
*(pd->in++) = IT83XX_I2C_DRR(p_ch);
pd->ridx++;
/* done */
if (pd->ridx == pd->in_size) {
pd->in_size = 0;
if (pd->flags & I2C_XFER_STOP) {
pd->i2ccs = I2C_CH_NORMAL;
/* Stop and finish */
IT83XX_I2C_CTR(p_ch) =
(E_STOP | E_HW_RST);
/* Disable i2c module */
IT83XX_I2C_CTR1(p_ch) = 0x00;
return 0;
}
/* End the transaction */
pd->i2ccs = I2C_CH_WAIT_READ;
return 0;
}
/* read next byte */
i2c_pio_trans_data(p, RX_DIRECT, in_data, 0);
}
}
}
return 1;
}
void system_hibernate(uint32_t seconds, uint32_t microseconds)
{
int i;
#ifdef CONFIG_HOSTCMD_PD
/* Inform the PD MCU that we are going to hibernate. */
host_command_pd_request_hibernate();
/* Wait to ensure exchange with PD before hibernating. */
msleep(100);
#endif
cflush();
if (board_hibernate)
board_hibernate();
/* Disable interrupts */
interrupt_disable();
for (i = 0; i <= 92; ++i) {
task_disable_irq(i);
task_clear_pending_irq(i);
}
for (i = 8; i <= 23; ++i)
MEC1322_INT_DISABLE(i) = 0xffffffff;
MEC1322_INT_BLK_DIS |= 0xffff00;
/* Power down ADC VREF */
MEC1322_EC_ADC_VREF_PD |= 1;
/* Assert nSIO_RESET */
MEC1322_PCR_PWR_RST_CTL |= 1;
/* Disable UART */
MEC1322_UART_ACT &= ~0x1;
MEC1322_LPC_ACT &= ~0x1;
/* Disable JTAG */
MEC1322_EC_JTAG_EN &= ~1;
/* Disable 32KHz clock */
MEC1322_VBAT_CE &= ~0x2;
/* Stop watchdog */
MEC1322_WDG_CTL &= ~1;
/* Stop timers */
MEC1322_TMR32_CTL(0) &= ~1;
MEC1322_TMR32_CTL(1) &= ~1;
MEC1322_TMR16_CTL(0) &= ~1;
/* Power down ADC */
MEC1322_ADC_CTRL &= ~1;
/* Disable blocks */
MEC1322_PCR_CHIP_SLP_EN |= 0x3;
MEC1322_PCR_EC_SLP_EN |= MEC1322_PCR_EC_SLP_EN_SLEEP;
MEC1322_PCR_HOST_SLP_EN |= MEC1322_PCR_HOST_SLP_EN_SLEEP;
MEC1322_PCR_EC_SLP_EN2 |= MEC1322_PCR_EC_SLP_EN2_SLEEP;
MEC1322_PCR_SLOW_CLK_CTL &= 0xfffffc00;
/* Set sleep state */
MEC1322_PCR_SYS_SLP_CTL = (MEC1322_PCR_SYS_SLP_CTL & ~0x7) | 0x2;
CPU_SCB_SYSCTRL |= 0x4;
/* Setup GPIOs for hibernate */
if (board_hibernate_late)
board_hibernate_late();
#ifdef CONFIG_USB_PD_PORT_COUNT
/*
* Leave USB-C charging enabled in hibernate, in order to
* allow wake-on-plug. 5V enable must be pulled low.
*/
#if CONFIG_USB_PD_PORT_COUNT > 0
gpio_set_flags(GPIO_USB_C0_5V_EN, GPIO_PULL_DOWN | GPIO_INPUT);
gpio_set_level(GPIO_USB_C0_CHARGE_EN_L, 0);
#endif
#if CONFIG_USB_PD_PORT_COUNT > 1
gpio_set_flags(GPIO_USB_C1_5V_EN, GPIO_PULL_DOWN | GPIO_INPUT);
gpio_set_level(GPIO_USB_C1_CHARGE_EN_L, 0);
#endif
#endif /* CONFIG_USB_PD_PORT_COUNT */
if (hibernate_wake_pins_used > 0) {
for (i = 0; i < hibernate_wake_pins_used; ++i) {
const enum gpio_signal pin = hibernate_wake_pins[i];
gpio_reset(pin);
gpio_enable_interrupt(pin);
}
interrupt_enable();
task_enable_irq(MEC1322_IRQ_GIRQ8);
task_enable_irq(MEC1322_IRQ_GIRQ9);
task_enable_irq(MEC1322_IRQ_GIRQ10);
task_enable_irq(MEC1322_IRQ_GIRQ11);
task_enable_irq(MEC1322_IRQ_GIRQ20);
}
if (seconds || microseconds) {
MEC1322_INT_BLK_EN |= 1 << 17;
MEC1322_INT_ENABLE(17) |= 1 << 20;
interrupt_enable();
task_enable_irq(MEC1322_IRQ_HTIMER);
if (seconds > 2) {
ASSERT(seconds <= 0xffff / 8);
MEC1322_HTIMER_CONTROL = 1;
MEC1322_HTIMER_PRELOAD =
(seconds * 8 + microseconds / 125000);
} else {
MEC1322_HTIMER_CONTROL = 0;
MEC1322_HTIMER_PRELOAD =
(seconds * 1000000 + microseconds) * 2 / 71;
}
}
asm("wfi");
/* Use 48MHz clock to speed through wake-up */
MEC1322_PCR_PROC_CLK_CTL = 1;
/* Reboot */
_system_reset(0, 1);
/* We should never get here. */
while (1)
;
}
static void lpc_init(void)
{
/*
* DLM 52k~56k size select enable.
* For mapping LPC I/O cycle 800h ~ 9FFh to DLM 8D800 ~ 8D9FF.
*/
IT83XX_GCTRL_MCCR2 |= 0x10;
IT83XX_GPIO_GCR = 0x06;
/* The register pair to access PNPCFG is 004Eh and 004Fh */
IT83XX_GCTRL_BADRSEL = 0x01;
/* Disable KBC IRQ */
IT83XX_KBC_KBIRQR = 0x00;
/*
* bit2, Output Buffer Empty CPU Interrupt Enable.
* bit3, Input Buffer Full CPU Interrupt Enable.
*/
IT83XX_KBC_KBHICR |= 0x0C;
/* PM1 Input Buffer Full Interrupt Enable for 62h/66 port */
pm_set_ctrl(LPC_ACPI_CMD, PM_CTRL_IBFIE, 1);
/* PM2 Input Buffer Full Interrupt Enable for 200h/204 port */
pm_set_ctrl(LPC_HOST_CMD, PM_CTRL_IBFIE, 1);
memset(lpc_get_memmap_range(), 0, EC_MEMMAP_SIZE);
memset(lpc_host_args, 0, sizeof(*lpc_host_args));
/* Host LPC I/O cycle mapping to RAM */
/*
* bit[4], H2RAM through LPC IO cycle.
* bit[1], H2RAM window 1 enabled.
* bit[0], H2RAM window 0 enabled.
*/
IT83XX_SMFI_HRAMWC |= 0x13;
/*
* bit[7:6]
* Host RAM Window[x] Read Protect Enable
* 00b: Disabled
* 01b: Lower half of RAM window protected
* 10b: Upper half of RAM window protected
* 11b: All protected
*
* bit[5:4]
* Host RAM Window[x] Write Protect Enable
* 00b: Disabled
* 01b: Lower half of RAM window protected
* 10b: Upper half of RAM window protected
* 11b: All protected
*
* bit[2:0]
* Host RAM Window 1 Size (HRAMW1S)
* 0h: 16 bytes
* 1h: 32 bytes
* 2h: 64 bytes
* 3h: 128 bytes
* 4h: 256 bytes
* 5h: 512 bytes
* 6h: 1024 bytes
* 7h: 2048 bytes
*/
/* H2RAM Win 0 Base Address 800h allow r/w for host_cmd_memmap */
IT83XX_SMFI_HRAMW0BA = 0x80;
IT83XX_SMFI_HRAMW0AAS = 0x04;
/* H2RAM Win 1 Base Address 900h allow r for acpi_ec_memmap */
IT83XX_SMFI_HRAMW1BA = 0x90;
IT83XX_SMFI_HRAMW1AAS = 0x34;
/* We support LPC args and version 3 protocol */
*(lpc_get_memmap_range() + EC_MEMMAP_HOST_CMD_FLAGS) =
EC_HOST_CMD_FLAG_LPC_ARGS_SUPPORTED |
EC_HOST_CMD_FLAG_VERSION_3;
/*
* bit[5], Dedicated interrupt
* INT3: PMC1 Output Buffer Empty Int
* INT25: PMC1 Input Buffer Full Int
* INT26: PMC2 Output Buffer Empty Int
* INT27: PMC2 Input Buffer Full Int
*/
IT83XX_PMC_MBXCTRL |= 0x20;
/* PM3 Input Buffer Full Interrupt Enable for 80h port */
pm_set_ctrl(LPC_HOST_PORT_80H, PM_CTRL_IBFIE, 1);
gpio_enable_interrupt(GPIO_PCH_PLTRST_L);
task_clear_pending_irq(IT83XX_IRQ_KBC_OUT);
task_disable_irq(IT83XX_IRQ_KBC_OUT);
task_clear_pending_irq(IT83XX_IRQ_KBC_IN);
task_enable_irq(IT83XX_IRQ_KBC_IN);
task_clear_pending_irq(IT83XX_IRQ_PMC_IN);
task_enable_irq(IT83XX_IRQ_PMC_IN);
task_clear_pending_irq(IT83XX_IRQ_PMC2_IN);
task_enable_irq(IT83XX_IRQ_PMC2_IN);
task_clear_pending_irq(IT83XX_IRQ_PMC3_IN);
task_enable_irq(IT83XX_IRQ_PMC3_IN);
/* Sufficiently initialized */
init_done = 1;
/* Update host events now that we can copy them to memmap */
update_host_event_status();
}
void pm5_ibf_interrupt(void)
{
task_clear_pending_irq(IT83XX_IRQ_PMC5_IN);
}
void pm5_ibf_interrupt(void)
{
pm_clear_ibf(LPC_PM5);
task_clear_pending_irq(IT83XX_IRQ_PMC5_IN);
}
void pm2_ibf_interrupt(void)
{
uint8_t value __attribute__((unused)) = 0;
uint8_t status;
status = pm_get_status(LPC_HOST_CMD);
/* IBE */
if (!(status & EC_LPC_STATUS_FROM_HOST)) {
task_clear_pending_irq(IT83XX_IRQ_PMC2_IN);
return;
}
/* IBF and data port */
if (!(status & EC_LPC_STATUS_LAST_CMD)) {
/* R/C IBF*/
value = pm_get_data_in(LPC_HOST_CMD);
task_clear_pending_irq(IT83XX_IRQ_PMC2_IN);
return;
}
/* Set the busy bit */
pm_set_status(LPC_HOST_CMD, EC_LPC_STATUS_PROCESSING, 1);
/*
* Read the command byte. This clears the FRMH bit in
* the status byte.
*/
host_cmd_args.command = pm_get_data_in(LPC_HOST_CMD);
host_cmd_args.result = EC_RES_SUCCESS;
if (host_cmd_args.command != EC_COMMAND_PROTOCOL_3)
host_cmd_args.send_response = lpc_send_response;
host_cmd_flags = lpc_host_args->flags;
/* We only support new style command (v3) now */
if (host_cmd_args.command == EC_COMMAND_PROTOCOL_3) {
lpc_packet.send_response = lpc_send_response_packet;
lpc_packet.request = (const void *)host_cmd_memmap;
lpc_packet.request_temp = params_copy;
lpc_packet.request_max = sizeof(params_copy);
/* Don't know the request size so pass in the entire buffer */
lpc_packet.request_size = EC_LPC_HOST_PACKET_SIZE;
lpc_packet.response = (void *)host_cmd_memmap;
lpc_packet.response_max = EC_LPC_HOST_PACKET_SIZE;
lpc_packet.response_size = 0;
lpc_packet.driver_result = EC_RES_SUCCESS;
host_packet_receive(&lpc_packet);
task_clear_pending_irq(IT83XX_IRQ_PMC2_IN);
return;
} else {
/* Old style command, now unsupported */
host_cmd_args.result = EC_RES_INVALID_COMMAND;
}
/* Hand off to host command handler */
host_command_received(&host_cmd_args);
task_clear_pending_irq(IT83XX_IRQ_PMC2_IN);
}
static void lpc_init(void)
{
enum ec2i_message ec2i_r;
/* SPI slave interface is disabled */
IT83XX_GCTRL_SSCR = 0;
/*
* DLM 52k~56k size select enable.
* For mapping LPC I/O cycle 800h ~ 9FFh to DLM 8D800 ~ 8D9FF.
*/
IT83XX_GCTRL_MCCR2 |= 0x10;
/* The register pair to access PNPCFG is 004Eh and 004Fh */
IT83XX_GCTRL_BADRSEL = 0x01;
/* Disable KBC IRQ */
IT83XX_KBC_KBIRQR = 0x00;
/*
* bit2, Output Buffer Empty CPU Interrupt Enable.
* bit3, Input Buffer Full CPU Interrupt Enable.
* bit5, IBF/OBF EC clear mode.
* 0b: IBF cleared if EC read data register, EC reset, or host reset.
* OBF cleared if host read data register, or EC reset.
* 1b: IBF cleared if EC write-1 to bit7 at related registers,
* EC reset, or host reset.
* OBF cleared if host read data register, EC write-1 to bit6 at
* related registers, or EC reset.
*/
IT83XX_KBC_KBHICR |= 0x2C;
/* PM1 Input Buffer Full Interrupt Enable for 62h/66 port */
pm_set_ctrl(LPC_ACPI_CMD, PM_CTRL_IBFIE, 1);
/* PM2 Input Buffer Full Interrupt Enable for 200h/204 port */
pm_set_ctrl(LPC_HOST_CMD, PM_CTRL_IBFIE, 1);
memset(lpc_get_memmap_range(), 0, EC_MEMMAP_SIZE);
memset(lpc_host_args, 0, sizeof(*lpc_host_args));
/* Host LPC I/O cycle mapping to RAM */
/*
* bit[4], H2RAM through LPC IO cycle.
* bit[1], H2RAM window 1 enabled.
* bit[0], H2RAM window 0 enabled.
*/
IT83XX_SMFI_HRAMWC |= 0x13;
/*
* bit[7:6]
* Host RAM Window[x] Read Protect Enable
* 00b: Disabled
* 01b: Lower half of RAM window protected
* 10b: Upper half of RAM window protected
* 11b: All protected
*
* bit[5:4]
* Host RAM Window[x] Write Protect Enable
* 00b: Disabled
* 01b: Lower half of RAM window protected
* 10b: Upper half of RAM window protected
* 11b: All protected
*
* bit[2:0]
* Host RAM Window 1 Size (HRAMW1S)
* 0h: 16 bytes
* 1h: 32 bytes
* 2h: 64 bytes
* 3h: 128 bytes
* 4h: 256 bytes
* 5h: 512 bytes
* 6h: 1024 bytes
* 7h: 2048 bytes
*/
/* H2RAM Win 0 Base Address 800h allow r/w for host_cmd_memmap */
IT83XX_SMFI_HRAMW0BA = 0x80;
IT83XX_SMFI_HRAMW0AAS = 0x04;
/* H2RAM Win 1 Base Address 900h allow r for acpi_ec_memmap */
IT83XX_SMFI_HRAMW1BA = 0x90;
IT83XX_SMFI_HRAMW1AAS = 0x34;
/* We support LPC args and version 3 protocol */
*(lpc_get_memmap_range() + EC_MEMMAP_HOST_CMD_FLAGS) =
EC_HOST_CMD_FLAG_LPC_ARGS_SUPPORTED |
EC_HOST_CMD_FLAG_VERSION_3;
/*
* bit[5], Dedicated interrupt
* INT3: PMC1 Output Buffer Empty Int
* INT25: PMC1 Input Buffer Full Int
* INT26: PMC2 Output Buffer Empty Int
* INT27: PMC2 Input Buffer Full Int
*/
IT83XX_PMC_MBXCTRL |= 0x20;
/* PM3 Input Buffer Full Interrupt Enable for 80h port */
pm_set_ctrl(LPC_HOST_PORT_80H, PM_CTRL_IBFIE, 1);
p80l_index = P80L_P80LC;
if (ec2i_write(HOST_INDEX_LDN, LDN_RTCT) == EC2I_WRITE_SUCCESS) {
/* get P80L current index */
ec2i_r = ec2i_read(HOST_INDEX_DSLDC6);
/* read OK */
if ((ec2i_r & 0xff00) == EC2I_READ_SUCCESS)
p80l_index = ec2i_r & P80L_BRAM_BANK1_SIZE_MASK;
}
/*
* bit[7], enable P80L function.
* bit[6], accept port 80h cycle.
* bit[1-0], 10b: I2EC is read-only.
*/
IT83XX_GCTRL_SPCTRL1 |= 0xC2;
gpio_enable_interrupt(GPIO_PCH_PLTRST_L);
task_clear_pending_irq(IT83XX_IRQ_KBC_OUT);
task_disable_irq(IT83XX_IRQ_KBC_OUT);
task_clear_pending_irq(IT83XX_IRQ_KBC_IN);
task_enable_irq(IT83XX_IRQ_KBC_IN);
task_clear_pending_irq(IT83XX_IRQ_PMC_IN);
pm_set_status(LPC_ACPI_CMD, EC_LPC_STATUS_PROCESSING, 0);
task_enable_irq(IT83XX_IRQ_PMC_IN);
task_clear_pending_irq(IT83XX_IRQ_PMC2_IN);
pm_set_status(LPC_HOST_CMD, EC_LPC_STATUS_PROCESSING, 0);
task_enable_irq(IT83XX_IRQ_PMC2_IN);
task_clear_pending_irq(IT83XX_IRQ_PMC3_IN);
task_enable_irq(IT83XX_IRQ_PMC3_IN);
/* Restore event masks if needed */
lpc_post_sysjump();
/* Sufficiently initialized */
init_done = 1;
/* Update host events now that we can copy them to memmap */
update_host_event_status();
}
/**
* Start a PECI transaction
*
* @param addr client address
* @param w_len write length (no include [Cmd Code] and [AW FCS])
* @param r_len read length (no include [FCS])
* @param cmd_code command code
* @param *w_buf How buffer pointer of write data
* @param *r_buf How buffer pointer of read data
* @param timeout_us transaction timeout unit:us
*
* @return zero if successful, non-zero if error
*/
static enum peci_status peci_transaction(uint8_t addr,
uint8_t w_len,
uint8_t r_len,
enum peci_command_code cmd_code,
uint8_t *w_buf,
uint8_t *r_buf,
int timeout_us)
{
uint8_t status;
int index;
/*
* bit5, Both write and read data FIFO pointers will be cleared.
*
* bit4, This bit enables the PECI host to abort the transaction
* when FCS error occurs.
*
* bit2, This bit enables the contention mechanism of the PECI bus.
* When this bit is set, the host will abort the transaction
* if the PECI bus is contentious.
*/
IT83XX_PECI_HOCTLR |= 0x34;
/* This register is the target address field of the PECI protocol. */
IT83XX_PECI_HOTRADDR = addr;
/* This register is the write length field of the PECI protocol. */
ASSERT(w_len <= PECI_WRITE_DATA_FIFO_SIZE);
if (cmd_code == PECI_CMD_PING) {
/* write length is 0 */
IT83XX_PECI_HOWRLR = 0x00;
} else {
if ((cmd_code == PECI_CMD_WR_PKG_CFG) ||
(cmd_code == PECI_CMD_WR_IAMSR) ||
(cmd_code == PECI_CMD_WR_PCI_CFG) ||
(cmd_code == PECI_CMD_WR_PCI_CFG_LOCAL)) {
/* write length include Cmd Code + AW FCS */
IT83XX_PECI_HOWRLR = w_len + 2;
/* bit1, The bit enables the AW_FCS hardwired mechanism
* based on the PECI command. This bit is functional
* only when the AW_FCS supported command of
* PECI 2.0/3.0/3.1 is issued.
* When this bit is set, the hardware will handle the
* calculation of AW_FCS.
*/
IT83XX_PECI_HOCTLR |= 0x02;
} else {
/* write length include Cmd Code */
IT83XX_PECI_HOWRLR = w_len + 1;
IT83XX_PECI_HOCTLR &= ~0x02;
}
}
/* This register is the read length field of the PECI protocol. */
ASSERT(r_len <= PECI_READ_DATA_FIFO_SIZE);
IT83XX_PECI_HORDLR = r_len;
/* This register is the command field of the PECI protocol. */
IT83XX_PECI_HOCMDR = cmd_code;
/* The write data field of the PECI protocol. */
for (index = 0x00; index < w_len; index++)
IT83XX_PECI_HOWRDR = w_buf[index];
peci_current_task = task_get_current();
#ifdef CONFIG_IT83XX_PECI_WITH_INTERRUPT
task_clear_pending_irq(IT83XX_IRQ_PECI);
task_enable_irq(IT83XX_IRQ_PECI);
/* start */
IT83XX_PECI_HOCTLR |= 0x01;
/* pre-set timeout */
index = timeout_us;
if (task_wait_event(timeout_us) != TASK_EVENT_TIMER)
index = 0;
task_disable_irq(IT83XX_IRQ_PECI);
#else
/* start */
IT83XX_PECI_HOCTLR |= 0x01;
for (index = 0x00; index < timeout_us; index += 16) {
if (IT83XX_PECI_HOSTAR & PECI_STATUS_ANY_BIT)
break;
udelay(15);
}
#endif
peci_current_task = TASK_ID_INVALID;
if (index < timeout_us) {
status = IT83XX_PECI_HOSTAR;
/* any error */
if (IT83XX_PECI_HOSTAR & PECI_STATUS_ANY_ERR) {
if (IT83XX_PECI_HOSTAR & PECI_STATUS_ERR_NEED_RST)
peci_reset();
} else if (IT83XX_PECI_HOSTAR & PECI_STATUS_FINISH) {
/* The read data field of the PECI protocol. */
for (index = 0x00; index < r_len; index++)
r_buf[index] = IT83XX_PECI_HORDDR;
/* W/C */
IT83XX_PECI_HOSTAR = PECI_STATUS_FINISH;
status = IT83XX_PECI_HOSTAR;
}
} else {
/* transaction timeout */
status = PECI_STATUS_TIMEOUT;
}
/* Don't disable PECI host controller if controller already enable. */
IT83XX_PECI_HOCTLR = 0x08;
/* W/C */
IT83XX_PECI_HOSTAR = PECI_STATUS_ANY_BIT;
return status;
}
static void event_timer_clear_pending_isr(void)
{
/* w/c interrupt status */
task_clear_pending_irq(et_ctrl_regs[EVENT_EXT_TIMER].irq);
}
void system_hibernate(uint32_t seconds, uint32_t microseconds)
{
int i;
cflush();
/* Disable interrupts */
interrupt_disable();
for (i = 0; i <= 92; ++i) {
task_disable_irq(i);
task_clear_pending_irq(i);
}
for (i = 8; i <= 23; ++i)
MEC1322_INT_DISABLE(i) = 0xffffffff;
MEC1322_INT_BLK_DIS |= 0xffff00;
/* Set processor clock to lowest, 1MHz */
MEC1322_PCR_PROC_CLK_CTL = 48;
/* Power down ADC VREF */
MEC1322_EC_ADC_VREF_PD |= 1;
/* Assert nSIO_RESET */
MEC1322_PCR_PWR_RST_CTL |= 1;
/* Disable UART */
MEC1322_UART_ACT &= ~0x1;
MEC1322_LPC_ACT &= ~0x1;
/* Disable JTAG */
MEC1322_EC_JTAG_EN &= ~1;
/* Disable 32KHz clock */
MEC1322_VBAT_CE &= ~0x2;
/* Stop watchdog */
MEC1322_WDG_CTL &= ~1;
/* Stop timers */
MEC1322_TMR32_CTL(0) &= ~1;
MEC1322_TMR32_CTL(1) &= ~1;
MEC1322_TMR16_CTL(0) &= ~1;
/* Power down ADC */
MEC1322_ADC_CTRL &= ~1;
/* Disable blocks */
MEC1322_PCR_CHIP_SLP_EN |= 0x3;
MEC1322_PCR_EC_SLP_EN |= 0xe0700ff7;
MEC1322_PCR_HOST_SLP_EN |= 0x5f003;
MEC1322_PCR_EC_SLP_EN2 |= 0x1ffffff8;
MEC1322_PCR_SYS_SLP_CTL = (MEC1322_PCR_SYS_SLP_CTL & ~0x7) | 0x2;
MEC1322_PCR_SLOW_CLK_CTL &= 0xfffffc00;
CPU_SCB_SYSCTRL |= 0x4;
system_unpower_gpio();
#ifdef CONFIG_WAKE_PIN
gpio_set_flags_by_mask(gpio_list[CONFIG_WAKE_PIN].port,
gpio_list[CONFIG_WAKE_PIN].mask,
gpio_list[CONFIG_WAKE_PIN].flags);
gpio_enable_interrupt(CONFIG_WAKE_PIN);
interrupt_enable();
task_enable_irq(MEC1322_IRQ_GIRQ8);
task_enable_irq(MEC1322_IRQ_GIRQ9);
task_enable_irq(MEC1322_IRQ_GIRQ10);
task_enable_irq(MEC1322_IRQ_GIRQ11);
task_enable_irq(MEC1322_IRQ_GIRQ20);
#endif
if (seconds || microseconds) {
MEC1322_INT_BLK_EN |= 1 << 17;
MEC1322_INT_ENABLE(17) |= 1 << 20;
interrupt_enable();
task_enable_irq(MEC1322_IRQ_HTIMER);
if (seconds > 2) {
ASSERT(seconds <= 0xffff / 8);
MEC1322_HTIMER_CONTROL = 1;
MEC1322_HTIMER_PRELOAD =
(seconds * 8 + microseconds / 125000);
} else {
MEC1322_HTIMER_CONTROL = 0;
MEC1322_HTIMER_PRELOAD =
(seconds * 1000000 + microseconds) * 2 / 71;
}
}
asm("wfi");
/* We lost states of most modules, let's just reboot */
_system_reset(0, 1);
}
