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To do this the remoteproc will need to check the ready and handover states in smp2p without an interrupt notification. Create qcom_smp2p_start_in() to initialize the shadow state without notifying clients because these early events happened in the past. Add support for the .irq_get_irqchip_state callback so remoteproc can read the current state of the fatal, ready and handover bits. Signed-off-by: Chris Lew Signed-off-by: Deepak Kumar Singh --- drivers/soc/qcom/smp2p.c | 55 ++++++++++++++++++++++++++++++++++++++++++++= ++++ 1 file changed, 55 insertions(+) diff --git a/drivers/soc/qcom/smp2p.c b/drivers/soc/qcom/smp2p.c index cb515c2340c1..c27ffb44b825 100644 --- a/drivers/soc/qcom/smp2p.c +++ b/drivers/soc/qcom/smp2p.c @@ -222,6 +222,39 @@ static void qcom_smp2p_negotiate(struct qcom_smp2p *sm= p2p) } } =20 +static void qcom_smp2p_start_in(struct qcom_smp2p *smp2p) +{ + unsigned int smem_id =3D smp2p->smem_items[SMP2P_INBOUND]; + unsigned int pid =3D smp2p->remote_pid; + char buf[SMP2P_MAX_ENTRY_NAME]; + struct smp2p_smem_item *in; + struct smp2p_entry *entry; + size_t size; + int i; + + in =3D qcom_smem_get(pid, smem_id, &size); + if (IS_ERR(in)) + return; + + smp2p->in =3D in; + + /* Check if version is initialized by the remote. */ + if (in->version =3D=3D 0) + return; + + for (i =3D smp2p->valid_entries; i < in->valid_entries; i++) { + list_for_each_entry(entry, &smp2p->inbound, node) { + memcpy(buf, in->entries[i].name, sizeof(buf)); + if (!strcmp(buf, entry->name)) { + entry->value =3D &in->entries[i].value; + entry->last_value =3D readl(entry->value); + break; + } + } + } + smp2p->valid_entries =3D i; +} + static void qcom_smp2p_notify_in(struct qcom_smp2p *smp2p) { struct smp2p_smem_item *in; @@ -368,12 +401,31 @@ static void smp2p_irq_print_chip(struct irq_data *irq= d, struct seq_file *p) seq_printf(p, "%8s", dev_name(entry->smp2p->dev)); } =20 +static int smp2p_irq_get_irqchip_state(struct irq_data *irqd, enum irqchip= _irq_state which, + bool *state) +{ + struct smp2p_entry *entry =3D irq_data_get_irq_chip_data(irqd); + u32 val; + + if (which !=3D IRQCHIP_STATE_LINE_LEVEL) + return -EINVAL; + + if (!entry->value) + return -ENODEV; + + val =3D readl(entry->value); + *state =3D !!(val & BIT(irqd_to_hwirq(irqd))); + + return 0; +} + static struct irq_chip smp2p_irq_chip =3D { .name =3D "smp2p", .irq_mask =3D smp2p_mask_irq, .irq_unmask =3D smp2p_unmask_irq, .irq_set_type =3D smp2p_set_irq_type, .irq_print_chip =3D smp2p_irq_print_chip, + .irq_get_irqchip_state =3D smp2p_irq_get_irqchip_state, }; =20 static int smp2p_irq_map(struct irq_domain *d, @@ -618,6 +670,9 @@ static int qcom_smp2p_probe(struct platform_device *pde= v) } } =20 + /* Check inbound entries in the case of early boot processor */ + qcom_smp2p_start_in(smp2p); + /* Kick the outgoing edge after allocating entries */ qcom_smp2p_kick(smp2p); =20 --=20 2.34.1