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;
}
static int hsi_debug_port_show(struct seq_file *m, void *p)
{
struct hsi_port *hsi_port = m->private;
struct hsi_dev *hsi_ctrl = hsi_port->hsi_controller;
void __iomem *base = hsi_ctrl->base;
unsigned int port = hsi_port->port_number;
int ch, fifo;
long buff_offset;
struct platform_device *pdev = to_platform_device(hsi_ctrl->dev);
hsi_clocks_enable(hsi_ctrl->dev, __func__);
if (hsi_port->cawake_gpio >= 0)
seq_printf(m, "CAWAKE\t\t: %d\n", hsi_get_cawake(hsi_port));
seq_printf(m, "WAKE\t\t: 0x%08x\n",
hsi_inl(base, HSI_SYS_WAKE_REG(port)));
seq_printf(m, "MPU_ENABLE_IRQ%d\t: 0x%08x\n", hsi_port->n_irq,
hsi_inl(base,
HSI_SYS_MPU_ENABLE_REG(port, hsi_port->n_irq)));
seq_printf(m, "MPU_STATUS_IRQ%d\t: 0x%08x\n", hsi_port->n_irq,
hsi_inl(base,
HSI_SYS_MPU_STATUS_REG(port, hsi_port->n_irq)));
if (hsi_driver_device_is_hsi(pdev)) {
seq_printf(m, "MPU_U_ENABLE_IRQ%d\t: 0x%08x\n",
hsi_port->n_irq,
hsi_inl(base, HSI_SYS_MPU_U_ENABLE_REG(port,
hsi_port->n_irq)));
seq_printf(m, "MPU_U_STATUS_IRQ%d\t: 0x%08x\n", hsi_port->n_irq,
hsi_inl(base,
HSI_SYS_MPU_U_STATUS_REG(port,
hsi_port->n_irq)));
}
/* HST */
seq_printf(m, "\nHST\n===\n");
seq_printf(m, "MODE\t\t: 0x%08x\n",
hsi_inl(base, HSI_HST_MODE_REG(port)));
seq_printf(m, "FRAMESIZE\t: 0x%08x\n",
hsi_inl(base, HSI_HST_FRAMESIZE_REG(port)));
seq_printf(m, "DIVISOR\t\t: 0x%08x\n",
hsi_inl(base, HSI_HST_DIVISOR_REG(port)));
seq_printf(m, "CHANNELS\t: 0x%08x\n",
hsi_inl(base, HSI_HST_CHANNELS_REG(port)));
seq_printf(m, "ARBMODE\t\t: 0x%08x\n",
hsi_inl(base, HSI_HST_ARBMODE_REG(port)));
seq_printf(m, "TXSTATE\t\t: 0x%08x\n",
hsi_inl(base, HSI_HST_TXSTATE_REG(port)));
if (hsi_driver_device_is_hsi(pdev)) {
seq_printf(m, "BUFSTATE P1\t: 0x%08x\n",
hsi_inl(base, HSI_HST_BUFSTATE_REG(1)));
seq_printf(m, "BUFSTATE P2\t: 0x%08x\n",
hsi_inl(base, HSI_HST_BUFSTATE_REG(2)));
} else {
seq_printf(m, "BUFSTATE\t: 0x%08x\n",
hsi_inl(base, HSI_HST_BUFSTATE_REG(port)));
}
seq_printf(m, "BREAK\t\t: 0x%08x\n",
hsi_inl(base, HSI_HST_BREAK_REG(port)));
for (ch = 0; ch < 8; ch++) {
buff_offset = hsi_hst_buffer_reg(hsi_ctrl, port, ch);
if (buff_offset >= 0)
seq_printf(m, "BUFFER_CH%d\t: 0x%08x\n", ch,
hsi_inl(base, buff_offset));
}
if (hsi_driver_device_is_hsi(pdev)) {
for (fifo = 0; fifo < HSI_HST_FIFO_COUNT; fifo++) {
seq_printf(m, "FIFO MAPPING%d\t: 0x%08x\n", fifo,
hsi_inl(base,
HSI_HST_MAPPING_FIFO_REG(fifo)));
}
}
/* HSR */
seq_printf(m, "\nHSR\n===\n");
seq_printf(m, "MODE\t\t: 0x%08x\n",
hsi_inl(base, HSI_HSR_MODE_REG(port)));
seq_printf(m, "FRAMESIZE\t: 0x%08x\n",
hsi_inl(base, HSI_HSR_FRAMESIZE_REG(port)));
seq_printf(m, "CHANNELS\t: 0x%08x\n",
hsi_inl(base, HSI_HSR_CHANNELS_REG(port)));
seq_printf(m, "COUNTERS\t: 0x%08x\n",
hsi_inl(base, HSI_HSR_COUNTERS_REG(port)));
seq_printf(m, "RXSTATE\t\t: 0x%08x\n",
hsi_inl(base, HSI_HSR_RXSTATE_REG(port)));
if (hsi_driver_device_is_hsi(pdev)) {
seq_printf(m, "BUFSTATE P1\t: 0x%08x\n",
hsi_inl(base, HSI_HSR_BUFSTATE_REG(1)));
seq_printf(m, "BUFSTATE P2\t: 0x%08x\n",
hsi_inl(base, HSI_HSR_BUFSTATE_REG(2)));
} else {
seq_printf(m, "BUFSTATE\t: 0x%08x\n",
hsi_inl(base, HSI_HSR_BUFSTATE_REG(port)));
}
seq_printf(m, "BREAK\t\t: 0x%08x\n",
hsi_inl(base, HSI_HSR_BREAK_REG(port)));
seq_printf(m, "ERROR\t\t: 0x%08x\n",
hsi_inl(base, HSI_HSR_ERROR_REG(port)));
seq_printf(m, "ERRORACK\t: 0x%08x\n",
hsi_inl(base, HSI_HSR_ERRORACK_REG(port)));
for (ch = 0; ch < 8; ch++) {
buff_offset = hsi_hsr_buffer_reg(hsi_ctrl, port, ch);
if (buff_offset >= 0)
seq_printf(m, "BUFFER_CH%d\t: 0x%08x\n", ch,
hsi_inl(base, buff_offset));
}
if (hsi_driver_device_is_hsi(pdev)) {
for (fifo = 0; fifo < HSI_HSR_FIFO_COUNT; fifo++) {
seq_printf(m, "FIFO MAPPING%d\t: 0x%08x\n", fifo,
hsi_inl(base,
HSI_HSR_MAPPING_FIFO_REG(fifo)));
}
seq_printf(m, "DLL\t: 0x%08x\n",
hsi_inl(base, HSI_HSR_DLL_REG));
seq_printf(m, "DIVISOR\t: 0x%08x\n",
hsi_inl(base, HSI_HSR_DIVISOR_REG(port)));
}
hsi_clocks_disable(hsi_ctrl->dev, __func__);
return 0;
}
