void irq_disable_channel(
const irq_ID_t ID,
const enum hrt_isp_css_irq irq_id)
{
unsigned int mask = irq_reg_load(ID,
_HRT_IRQ_CONTROLLER_MASK_REG_IDX);
unsigned int enable = irq_reg_load(ID,
_HRT_IRQ_CONTROLLER_ENABLE_REG_IDX);
unsigned int me = 1U << irq_id;
assert(irq_id < hrt_isp_css_irq_num_irqs);
mask &= ~me;
enable &= ~me;
/* enable interrupt to output */
irq_reg_store(ID,
_HRT_IRQ_CONTROLLER_ENABLE_REG_IDX, enable);
/* unmask interrupt from input */
irq_reg_store(ID,
_HRT_IRQ_CONTROLLER_MASK_REG_IDX, mask);
/* clear current irq only */
irq_reg_store(ID,
_HRT_IRQ_CONTROLLER_CLEAR_REG_IDX, me);
irq_wait_for_write_complete(ID);
return;
}
enum hrt_isp_css_irq_status irq_get_channel_id(
const irq_ID_t ID,
enum hrt_isp_css_irq *irq_id)
{
unsigned int irq_status = irq_reg_load(ID,
_HRT_IRQ_CONTROLLER_STATUS_REG_IDX);
enum hrt_isp_css_irq idx = hrt_isp_css_irq_num_irqs;
enum hrt_isp_css_irq_status status = hrt_isp_css_irq_status_success;
assert(irq_id != NULL);
/* find the first irq bit */
for (idx = 0; idx < hrt_isp_css_irq_num_irqs; idx++) {
if (irq_status & (1U << idx))
break;
}
if (idx == hrt_isp_css_irq_num_irqs)
return hrt_isp_css_irq_status_error;
/* now check whether there are more bits set */
if (irq_status != (1U << idx))
status = hrt_isp_css_irq_status_more_irqs;
irq_reg_store(ID,
_HRT_IRQ_CONTROLLER_CLEAR_REG_IDX, 1U << idx);
irq_wait_for_write_complete(ID);
if (irq_id)
*irq_id = (enum hrt_isp_css_irq)idx;
return status;
}
/*
* Do we want the user to be able to set the signalling method ?
*/
void irq_enable_channel(
const irq_ID_t ID,
const enum hrt_isp_css_irq irq_id)
{
unsigned int mask = irq_reg_load(ID,
_HRT_IRQ_CONTROLLER_MASK_REG_IDX);
unsigned int enable = irq_reg_load(ID,
_HRT_IRQ_CONTROLLER_ENABLE_REG_IDX);
unsigned int edge_in = irq_reg_load(ID,
_HRT_IRQ_CONTROLLER_EDGE_REG_IDX);
unsigned int edge_out = irq_reg_load(ID,
_HRT_IRQ_CONTROLLER_EDGE_NOT_PULSE_REG_IDX);
unsigned int me = 1U << irq_id;
assert(irq_id < hrt_isp_css_irq_num_irqs);
mask |= me;
enable |= me;
edge_in |= me; /* rising edge */
/* edge_out |= me; use pulse, not edge */
/* to avoid mishaps configuration must follow the following order */
/* mask this interrupt */
irq_reg_store(ID,
_HRT_IRQ_CONTROLLER_MASK_REG_IDX, mask & ~me);
/* rising edge at input */
irq_reg_store(ID,
_HRT_IRQ_CONTROLLER_EDGE_REG_IDX, edge_in);
/* enable interrupt to output */
irq_reg_store(ID,
_HRT_IRQ_CONTROLLER_ENABLE_REG_IDX, enable);
/* output is given as edge, not pulse */
irq_reg_store(ID,
_HRT_IRQ_CONTROLLER_EDGE_NOT_PULSE_REG_IDX, edge_out);
/* clear current irq only */
irq_reg_store(ID,
_HRT_IRQ_CONTROLLER_CLEAR_REG_IDX, me);
/* unmask interrupt from input */
irq_reg_store(ID,
_HRT_IRQ_CONTROLLER_MASK_REG_IDX, mask);
irq_wait_for_write_complete(ID);
return;
}
void irq_controller_get_state(
const irq_ID_t ID,
irq_controller_state_t *state)
{
assert(ID < N_IRQ_ID);
assert(state != NULL);
state->irq_edge = irq_reg_load(ID,
_HRT_IRQ_CONTROLLER_EDGE_REG_IDX);
state->irq_mask = irq_reg_load(ID,
_HRT_IRQ_CONTROLLER_MASK_REG_IDX);
state->irq_status = irq_reg_load(ID,
_HRT_IRQ_CONTROLLER_STATUS_REG_IDX);
state->irq_enable = irq_reg_load(ID,
_HRT_IRQ_CONTROLLER_ENABLE_REG_IDX);
state->irq_level_not_pulse = irq_reg_load(ID,
_HRT_IRQ_CONTROLLER_EDGE_NOT_PULSE_REG_IDX);
return;
}
enum sh_css_err sh_css_hrt_sp_wait(void)
{
#if defined(HAS_IRQ_MAP_VERSION_2)
irq_sw_channel_id_t irq_id = IRQ_SW_CHANNEL0_ID;
#else
irq_sw_channel_id_t irq_id = IRQ_SW_CHANNEL2_ID;
#endif
/*
* Wait till SP is idle or till there is a SW2 interrupt
* The SW2 interrupt will be used when frameloop runs on SP
* and signals an event with similar meaning as SP idle
* (e.g. frame_done)
*/
while (!sp_ctrl_getbit(SP0_ID, SP_SC_REG, SP_IDLE_BIT) &&
((irq_reg_load(IRQ0_ID,
_HRT_IRQ_CONTROLLER_STATUS_REG_IDX) &
(1U<<(irq_id + IRQ_SW_CHANNEL_OFFSET))) == 0)) {
hrt_sleep();
}
return sh_css_success;
}