| Message ID | 20220104072658.69756-9-marcan@marcan.st |
|---|---|
| State | New |
| Headers | show |
| Series | brcmfmac: Support Apple T2 and M1 platforms | expand |
On Tue, Jan 4, 2022 at 9:28 AM Hector Martin <marcan@marcan.st> wrote: > > On Apple ARM64 platforms, firmware selection requires two properties > that come from system firmware: the module-instance (aka "island", a > codename representing a given hardware platform) and the antenna-sku. > We map Apple's module codenames to board_types in the form > "apple,<module-instance>". > > The mapped board_type is added to the DTS file in that form, while the > antenna-sku is forwarded by our bootloader from the Apple Device Tree > into the FDT. Grab them from the DT so firmware selection can use > them. > + /* Apple ARM64 platforms have their own idea of board type, passed in > + * via the device tree. They also have an antenna SKU parameter > + */ > + if (!of_property_read_string(np, "brcm,board-type", &prop)) > + settings->board_type = devm_kstrdup(dev, prop, GFP_KERNEL); > + > + if (!of_property_read_string(np, "apple,antenna-sku", &prop)) > + settings->antenna_sku = devm_kstrdup(dev, prop, GFP_KERNEL); No error checks? But hold on, why do you need to copy them? Are you expecting this to be in DTO?
diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.h b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.h index 8b5f49997c8b..d4aa25d646fe 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.h +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.h @@ -50,6 +50,7 @@ struct brcmf_mp_device { bool ignore_probe_fail; struct brcmfmac_pd_cc *country_codes; const char *board_type; + const char *antenna_sku; union { struct brcmfmac_sdio_pd sdio; } bus; diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c index 513c7e6421b2..085d34176b78 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c @@ -63,14 +63,24 @@ void brcmf_of_probe(struct device *dev, enum brcmf_bus_type bus_type, { struct brcmfmac_sdio_pd *sdio = &settings->bus.sdio; struct device_node *root, *np = dev->of_node; + const char *prop; int irq; int err; u32 irqf; u32 val; + /* Apple ARM64 platforms have their own idea of board type, passed in + * via the device tree. They also have an antenna SKU parameter + */ + if (!of_property_read_string(np, "brcm,board-type", &prop)) + settings->board_type = devm_kstrdup(dev, prop, GFP_KERNEL); + + if (!of_property_read_string(np, "apple,antenna-sku", &prop)) + settings->antenna_sku = devm_kstrdup(dev, prop, GFP_KERNEL); + /* Set board-type to the first string of the machine compatible prop */ root = of_find_node_by_path("/"); - if (root) { + if (root && !settings->board_type) { int i, len; char *board_type; const char *tmp;