| Message ID | 20211226153624.162281-17-marcan@marcan.st |
|---|---|
| State | New |
| Headers | show |
| Series | brcmfmac: Support Apple T2 and M1 platforms | expand |
Andy Shevchenko <andy.shevchenko@gmail.com> writes: > On Sunday, December 26, 2021, Hector Martin <marcan@marcan.st> wrote: > > On DT platforms, the module-instance and antenna-sku-info properties > are passed in the DT. On ACPI platforms, module-instance is passed via > the analogous Apple device property mechanism, while the antenna SKU > info is instead obtained via an ACPI method that grabs it from > non-volatile storage. > > Add support for this, to allow proper firmware selection on Apple > platforms. > > Signed-off-by: Hector Martin <marcan@marcan.st> > --- > .../broadcom/brcm80211/brcmfmac/Makefile | 2 + > .../broadcom/brcm80211/brcmfmac/acpi.c | 51 +++++++++++++++++++ > .../broadcom/brcm80211/brcmfmac/common.c | 1 + > .../broadcom/brcm80211/brcmfmac/common.h | 9 ++++ > 4 files changed, 63 insertions(+) > create mode 100644 drivers/net/wireless/broadcom/brcm80211/brcmfmac/acpi.c > > diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/Makefile > b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/Makefile > index 13c13504a6e8..19009eb9db93 100644 > --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/Makefile > +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/Makefile > @@ -47,3 +47,5 @@ brcmfmac-$(CONFIG_OF) += \ > of.o > brcmfmac-$(CONFIG_DMI) += \ > dmi.o > +brcmfmac-$(CONFIG_ACPI) += \ > + acpi.o > diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/acpi.c > b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/acpi.c > new file mode 100644 > index 000000000000..3e56dc7a8db2 > --- /dev/null > +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/acpi.c > @@ -0,0 +1,51 @@ > +// SPDX-License-Identifier: ISC > +/* > + * Copyright The Asahi Linux Contributors > + */ > + > +#include <linux/acpi.h> > +#include "debug.h" > +#include "core.h" > +#include "common.h" > + > +void brcmf_acpi_probe(struct device *dev, enum brcmf_bus_type bus_type, > + struct brcmf_mp_device *settings) > +{ > + acpi_status status; > + struct acpi_device *adev = ACPI_COMPANION(dev); > > Please, move the assignment closer to its first user Andy, your email was formatted in HTML. I'm sure you know this already, but our mailing lists drop all HTML emails so other people (and patchwork) don't see your comments.
diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/Makefile b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/Makefile index 13c13504a6e8..19009eb9db93 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/Makefile +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/Makefile @@ -47,3 +47,5 @@ brcmfmac-$(CONFIG_OF) += \ of.o brcmfmac-$(CONFIG_DMI) += \ dmi.o +brcmfmac-$(CONFIG_ACPI) += \ + acpi.o diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/acpi.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/acpi.c new file mode 100644 index 000000000000..3e56dc7a8db2 --- /dev/null +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/acpi.c @@ -0,0 +1,51 @@ +// SPDX-License-Identifier: ISC +/* + * Copyright The Asahi Linux Contributors + */ + +#include <linux/acpi.h> +#include "debug.h" +#include "core.h" +#include "common.h" + +void brcmf_acpi_probe(struct device *dev, enum brcmf_bus_type bus_type, + struct brcmf_mp_device *settings) +{ + acpi_status status; + struct acpi_device *adev = ACPI_COMPANION(dev); + const union acpi_object *o; + struct acpi_buffer buf = {ACPI_ALLOCATE_BUFFER, NULL}; + + if (!adev) + return; + + if (!ACPI_FAILURE(acpi_dev_get_property(adev, "module-instance", + ACPI_TYPE_STRING, &o))) { + const char *prefix = "apple,"; + int len = strlen(prefix) + o->string.length + 1; + char *board_type = devm_kzalloc(dev, len, GFP_KERNEL); + + strscpy(board_type, prefix, len); + strlcat(board_type, o->string.pointer, len); + brcmf_dbg(INFO, "ACPI module-instance=%s\n", o->string.pointer); + settings->board_type = board_type; + } else { + brcmf_dbg(INFO, "No ACPI module-instance\n"); + } + + status = acpi_evaluate_object(adev->handle, "RWCV", NULL, &buf); + o = buf.pointer; + if (!ACPI_FAILURE(status) && o && o->type == ACPI_TYPE_BUFFER && + o->buffer.length >= 2) { + char *antenna_sku = devm_kzalloc(dev, 3, GFP_KERNEL); + + memcpy(antenna_sku, o->buffer.pointer, 2); + brcmf_dbg(INFO, "ACPI RWCV data=%*phN antenna-sku=%s\n", + (int)o->buffer.length, o->buffer.pointer, + antenna_sku); + + settings->antenna_sku = antenna_sku; + } else { + brcmf_dbg(INFO, "No ACPI antenna-sku\n"); + } +} diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c index b8ed851129b4..c84c48e49fde 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c @@ -437,6 +437,7 @@ struct brcmf_mp_device *brcmf_get_module_param(struct device *dev, /* No platform data for this device, try OF and DMI data */ brcmf_dmi_probe(settings, chip, chiprev); brcmf_of_probe(dev, bus_type, settings); + brcmf_acpi_probe(dev, bus_type, settings); } return settings; } diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.h b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.h index d4aa25d646fe..a88c4a9310f3 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.h +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.h @@ -73,6 +73,15 @@ static inline void brcmf_dmi_probe(struct brcmf_mp_device *settings, u32 chip, u32 chiprev) {} #endif +#ifdef CONFIG_ACPI +void brcmf_acpi_probe(struct device *dev, enum brcmf_bus_type bus_type, + struct brcmf_mp_device *settings); +#else +static inline void brcmf_acpi_probe(struct device *dev, + enum brcmf_bus_type bus_type, + struct brcmf_mp_device *settings) {} +#endif + u8 brcmf_map_prio_to_prec(void *cfg, u8 prio); u8 brcmf_map_prio_to_aci(void *cfg, u8 prio);
On DT platforms, the module-instance and antenna-sku-info properties are passed in the DT. On ACPI platforms, module-instance is passed via the analogous Apple device property mechanism, while the antenna SKU info is instead obtained via an ACPI method that grabs it from non-volatile storage. Add support for this, to allow proper firmware selection on Apple platforms. Signed-off-by: Hector Martin <marcan@marcan.st> --- .../broadcom/brcm80211/brcmfmac/Makefile | 2 + .../broadcom/brcm80211/brcmfmac/acpi.c | 51 +++++++++++++++++++ .../broadcom/brcm80211/brcmfmac/common.c | 1 + .../broadcom/brcm80211/brcmfmac/common.h | 9 ++++ 4 files changed, 63 insertions(+) create mode 100644 drivers/net/wireless/broadcom/brcm80211/brcmfmac/acpi.c