static void do_hsi_tasklet(unsigned long hsi_port)
{
struct hsi_port *pport = (struct hsi_port *)hsi_port;
struct hsi_dev *hsi_ctrl = pport->hsi_controller;
void __iomem *base = hsi_ctrl->base;
unsigned int port = pport->port_number;
unsigned int irq = pport->n_irq;
u32 status_reg;
struct platform_device *pd = to_platform_device(hsi_ctrl->dev);
hsi_driver_int_proc(pport,
HSI_SYS_MPU_STATUS_REG(port, irq),
HSI_SYS_MPU_ENABLE_REG(port, irq),
0, min(pport->max_ch, (u8) HSI_SSI_CHANNELS_MAX));
if (pport->max_ch > HSI_SSI_CHANNELS_MAX)
hsi_driver_int_proc(pport,
HSI_SYS_MPU_U_STATUS_REG(port, irq),
HSI_SYS_MPU_U_ENABLE_REG(port, irq),
HSI_SSI_CHANNELS_MAX, pport->max_ch);
status_reg = hsi_inl(base, HSI_SYS_MPU_STATUS_REG(port, irq)) &
hsi_inl(base, HSI_SYS_MPU_ENABLE_REG(port, irq));
if (hsi_driver_device_is_hsi(pd))
status_reg |=
(hsi_inl(base, HSI_SYS_MPU_U_STATUS_REG(port, irq)) &
hsi_inl(base, HSI_SYS_MPU_U_ENABLE_REG(port, irq)));
if (status_reg)
tasklet_hi_schedule(&pport->hsi_tasklet);
else
enable_irq(pport->irq);
}
static u32 hsi_process_int_event(struct hsi_port *pport)
{
unsigned int port = pport->port_number;
unsigned int irq = pport->n_irq;
u32 status_reg;
bool cawake_double_int = false;
/* Clear CAWAKE backup interrupt */
hsi_driver_ack_interrupt(pport, HSI_CAWAKEDETECTED, true);
/* Process events for channels 0..7 */
status_reg = hsi_driver_int_proc(pport,
HSI_SYS_MPU_STATUS_REG(port, irq),
HSI_SYS_MPU_ENABLE_REG(port, irq),
0,
min(pport->max_ch, (u8) HSI_SSI_CHANNELS_MAX) - 1,
cawake_double_int);
/* If another CAWAKE interrupt occured while previous is still being
* processed, mark it for extra processing */
if (hsi_driver_is_interrupt_pending(pport, HSI_CAWAKEDETECTED, true) &&
(status_reg & HSI_CAWAKEDETECTED)) {
dev_warn(pport->hsi_controller->dev, "New CAWAKE interrupt "
"detected during interrupt processing\n");
/* Force processing of backup CAWAKE interrupt */
cawake_double_int = true;
}
/* Process events for channels 8..15 or backup interrupt if needed */
if ((pport->max_ch > HSI_SSI_CHANNELS_MAX) || cawake_double_int)
status_reg |= hsi_driver_int_proc(pport,
HSI_SYS_MPU_U_STATUS_REG(port, irq),
HSI_SYS_MPU_U_ENABLE_REG(port, irq),
HSI_SSI_CHANNELS_MAX, pport->max_ch - 1,
cawake_double_int);
return status_reg;
}
