diff options
Diffstat (limited to 'hdata')
| -rw-r--r-- | hdata/i2c.c | 68 |
1 files changed, 37 insertions, 31 deletions
diff --git a/hdata/i2c.c b/hdata/i2c.c index 9bbec665..5a6d8506 100644 --- a/hdata/i2c.c +++ b/hdata/i2c.c @@ -129,30 +129,31 @@ static struct hdat_i2c_type hdat_i2c_devs[] = { { 0x13, "i2c", "nxp,lpc11u35" }, }; -struct hdat_i2c_label { +struct hdat_i2c_info { uint32_t id; + bool whitelist; /* true if the host may use the device */ const char *label; }; -static struct hdat_i2c_label hdat_i2c_labels[] = { - { 0x1, "led-controller" }, - { 0x2, "pci-hotplug-pgood" }, - { 0x3, "pci-hotplug-control" }, - { 0x4, "tpm" }, - { 0x5, "module-vpd" }, - { 0x6, "dimm SPD" }, - { 0x7, "proc-vpd" }, - { 0x8, "sbe-eeprom" }, - { 0x9, "planar-vpd" }, - { 0xa, "opencapi-topology" }, - { 0xb, "opencapi-micro-reset" }, - { 0xc, "nvlink-cable" }, - { 0xd, "secure-window-open" }, - { 0xe, "physical-presence" }, - { 0xf, "mex-fpga" }, - { 0x10, "thermal-sensor" }, - { 0x11, "host-i2c-enable" }, - { 0x12, "gpu-config" }, +static struct hdat_i2c_info hdat_i2c_extra_info[] = { + { 0x1, false, "led-controller" }, + { 0x2, false, "pci-hotplug-pgood" }, + { 0x3, false, "pci-hotplug-control" }, + { 0x4, true, "tpm" }, + { 0x5, true, "module-vpd" }, + { 0x6, true, "dimm-spd" }, + { 0x7, true, "proc-vpd" }, + { 0x8, false, "sbe-eeprom"}, + { 0x9, true, "planar-vpd" }, + { 0xa, false, "opencapi-topology" }, + { 0xb, false, "opencapi-micro-reset" }, + { 0xc, false, "nvlink-cable" }, + { 0xd, false, "secure-window-open" }, + { 0xe, false, "physical-presence" }, + { 0xf, false, "mex-fpga" }, + { 0x10, false, "thermal-sensor" }, + { 0x11, false, "host-i2c-enable" }, + { 0x12, false, "gpu-config" }, }; /* @@ -171,15 +172,17 @@ static struct hdat_i2c_type *map_type(uint32_t type) return NULL; } -static const char *map_label(uint32_t type) +static struct hdat_i2c_info *get_info(uint32_t type) { + static struct hdat_i2c_info no_info = + { .id = 0x0, .whitelist = false, .label = "" }; int i; - for (i = 0; i < ARRAY_SIZE(hdat_i2c_labels); i++) - if (hdat_i2c_labels[i].id == type) - return hdat_i2c_labels[i].label; + for (i = 0; i < ARRAY_SIZE(hdat_i2c_extra_info); i++) + if (hdat_i2c_extra_info[i].id == type) + return &hdat_i2c_extra_info[i]; - return NULL; + return &no_info; } static bool is_zeros(const void *p, size_t size) @@ -204,8 +207,9 @@ int parse_i2c_devs(const struct HDIF_common_hdr *hdr, int idata_index, { struct dt_node *i2cm, *bus, *node; const struct hdat_i2c_type *type; + const struct hdat_i2c_info *info; const struct i2c_dev *dev; - const char *label, *name, *compat; + const char *name, *compat; const struct host_i2c_hdr *ahdr; uint32_t dev_addr; uint32_t version; @@ -284,7 +288,7 @@ int parse_i2c_devs(const struct HDIF_common_hdr *hdr, int idata_index, purpose = be32_to_cpu(dev->purpose); type = map_type(dev->type); - label = map_label(purpose); + info = get_info(purpose); /* HACK: Hostboot doesn't export the correct type information * for the DIMM SPD EEPROMs. This is a problem because SPD @@ -316,11 +320,11 @@ int parse_i2c_devs(const struct HDIF_common_hdr *hdr, int idata_index, if (!type || dev->type == 0xFF) prlog(PR_WARNING, "HDAT I2C: found e%dp%d - %s@%x dp:%02x (%#x:%s)\n", dev->i2cm_engine, dev->i2cm_port, name, dev_addr, - dev->dev_port, purpose, label); + dev->dev_port, purpose, info->label); else prlog(PR_DEBUG, "HDAT I2C: found e%dp%d - %s@%x dp:%02x (%#x:%s)\n", dev->i2cm_engine, dev->i2cm_port, name, dev_addr, - dev->dev_port, purpose, label); + dev->dev_port, purpose, info->label); /* * Multi-port device require special handling since we need to @@ -340,8 +344,10 @@ int parse_i2c_devs(const struct HDIF_common_hdr *hdr, int idata_index, be32_to_cpu(dev->i2c_link)); if (compat) dt_add_property_string(node, "compatible", compat); - if (label) - dt_add_property_string(node, "label", label); + if (info->label) + dt_add_property_string(node, "label", info->label); + if (!info->whitelist) + dt_add_property_string(node, "status", "reserved"); /* * Set a default timeout of 2s on the ports with a TPM. This is |
