diff options
| author | Linux Build Service Account <lnxbuild@localhost> | 2017-04-18 06:29:42 -0700 |
|---|---|---|
| committer | Gerrit - the friendly Code Review server <code-review@localhost> | 2017-04-18 06:29:42 -0700 |
| commit | 0fe2dba74cc57b97b661f34aeaedf95266bc9f93 (patch) | |
| tree | b332d8fc5d0c5a67a7fc07784b5be95273c4e098 | |
| parent | 3327a91410ee3972bc470008d9302f4da8b8e0e9 (diff) | |
| parent | 37e5cdce64a6d1aa351ffccc9b78fc9c8940692d (diff) | |
Merge "spmi: pmic-arb: Reserve a channel for debug port"
| -rw-r--r-- | Documentation/devicetree/bindings/spmi/qcom,spmi-pmic-arb.txt | 4 | ||||
| -rw-r--r-- | drivers/spmi/spmi-pmic-arb.c | 13 |
2 files changed, 17 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/spmi/qcom,spmi-pmic-arb.txt b/Documentation/devicetree/bindings/spmi/qcom,spmi-pmic-arb.txt index bef919334574..633abd2b8d08 100644 --- a/Documentation/devicetree/bindings/spmi/qcom,spmi-pmic-arb.txt +++ b/Documentation/devicetree/bindings/spmi/qcom,spmi-pmic-arb.txt @@ -42,6 +42,9 @@ Required properties: cell 4: interrupt flags indicating level-sense information, as defined in dt-bindings/interrupt-controller/irq.h +Optional properties: +- qcom,reserved-chan : Reserved channel for debug purpose + Example V1 PMIC-Arbiter: spmi { @@ -56,6 +59,7 @@ Example V1 PMIC-Arbiter: qcom,ee = <0>; qcom,channel = <0>; + qcom,reserved-chan = <511>; #address-cells = <2>; #size-cells = <0>; diff --git a/drivers/spmi/spmi-pmic-arb.c b/drivers/spmi/spmi-pmic-arb.c index a5bfeab596ac..d1802bcba0fb 100644 --- a/drivers/spmi/spmi-pmic-arb.c +++ b/drivers/spmi/spmi-pmic-arb.c @@ -166,6 +166,7 @@ struct spmi_pmic_arb { u16 max_apid; u16 max_periph; u32 *mapping_table; + int reserved_chan; DECLARE_BITMAP(mapping_table_valid, PMIC_ARB_MAX_PERIPHS); struct irq_domain *domain; struct spmi_controller *spmic; @@ -861,6 +862,10 @@ static u16 pmic_arb_find_apid(struct spmi_pmic_arb *pa, u16 ppid) * ppid_to_apid is an in-memory invert of that table. */ for (apid = pa->last_apid; apid < pa->max_periph; apid++) { + /* Do not keep the reserved channel in the mapping table */ + if (pa->reserved_chan >= 0 && apid == pa->reserved_chan) + continue; + regval = readl_relaxed(pa->cnfg + SPMI_OWNERSHIP_TABLE_REG(apid)); pa->apid_data[apid].irq_owner @@ -920,6 +925,10 @@ static int pmic_arb_read_apid_map_v5(struct spmi_pmic_arb *pa) * receive interrupts from the PPID. */ for (apid = 0; apid < pa->max_periph; apid++) { + /* Do not keep the reserved channel in the mapping table */ + if (pa->reserved_chan >= 0 && apid == pa->reserved_chan) + continue; + offset = pa->ver_ops->channel_map_offset(apid); if (offset >= pa->core_size) break; @@ -1340,6 +1349,10 @@ static int spmi_pmic_arb_probe(struct platform_device *pdev) pa->ee = ee; + pa->reserved_chan = -EINVAL; + of_property_read_u32(pdev->dev.of_node, "qcom,reserved-chan", + &pa->reserved_chan); + pa->mapping_table = devm_kcalloc(&ctrl->dev, PMIC_ARB_MAX_PERIPHS - 1, sizeof(*pa->mapping_table), GFP_KERNEL); if (!pa->mapping_table) { |