diff options
Diffstat (limited to 'drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c')
| -rw-r--r-- | drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c new file mode 100644 index 000000000..e406e1148 --- /dev/null +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c @@ -0,0 +1,145 @@ +// SPDX-License-Identifier: ISC +/* + * Copyright (c) 2014 Broadcom Corporation + */ +#include <linux/init.h> +#include <linux/of.h> +#include <linux/of_irq.h> +#include <linux/of_net.h> + +#include <defs.h> +#include "debug.h" +#include "core.h" +#include "common.h" +#include "of.h" + +static int brcmf_of_get_country_codes(struct device *dev, + struct brcmf_mp_device *settings) +{ + struct device_node *np = dev->of_node; + struct brcmfmac_pd_cc_entry *cce; + struct brcmfmac_pd_cc *cc; + int count; + int i; + + count = of_property_count_strings(np, "brcm,ccode-map"); + if (count < 0) { + /* If no explicit country code map is specified, check whether + * the trivial map should be used. + */ + settings->trivial_ccode_map = + of_property_read_bool(np, "brcm,ccode-map-trivial"); + + /* The property is optional, so return success if it doesn't + * exist. Otherwise propagate the error code. + */ + return (count == -EINVAL) ? 0 : count; + } + + cc = devm_kzalloc(dev, struct_size(cc, table, count), GFP_KERNEL); + if (!cc) + return -ENOMEM; + + cc->table_size = count; + + for (i = 0; i < count; i++) { + const char *map; + + cce = &cc->table[i]; + + if (of_property_read_string_index(np, "brcm,ccode-map", + i, &map)) + continue; + + /* String format e.g. US-Q2-86 */ + if (sscanf(map, "%2c-%2c-%d", cce->iso3166, cce->cc, + &cce->rev) != 3) + brcmf_err("failed to read country map %s\n", map); + else + brcmf_dbg(INFO, "%s-%s-%d\n", cce->iso3166, cce->cc, + cce->rev); + } + + settings->country_codes = cc; + + return 0; +} + +void brcmf_of_probe(struct device *dev, enum brcmf_bus_type bus_type, + struct brcmf_mp_device *settings) +{ + 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 + */ + err = of_property_read_string(np, "brcm,board-type", &prop); + if (!err) + settings->board_type = prop; + + if (!of_property_read_string(np, "apple,antenna-sku", &prop)) + settings->antenna_sku = prop; + + /* The WLAN calibration blob is normally stored in SROM, but Apple + * ARM64 platforms pass it via the DT instead. + */ + prop = of_get_property(np, "brcm,cal-blob", &settings->cal_size); + if (prop && settings->cal_size) + settings->cal_blob = prop; + + /* Set board-type to the first string of the machine compatible prop */ + root = of_find_node_by_path("/"); + if (root && err) { + char *board_type; + const char *tmp; + + of_property_read_string_index(root, "compatible", 0, &tmp); + + /* get rid of '/' in the compatible string to be able to find the FW */ + board_type = devm_kstrdup(dev, tmp, GFP_KERNEL); + if (!board_type) { + of_node_put(root); + return; + } + strreplace(board_type, '/', '-'); + settings->board_type = board_type; + + of_node_put(root); + } + + if (!np || !of_device_is_compatible(np, "brcm,bcm4329-fmac")) + return; + + err = brcmf_of_get_country_codes(dev, settings); + if (err) + brcmf_err("failed to get OF country code map (err=%d)\n", err); + + of_get_mac_address(np, settings->mac); + + if (bus_type != BRCMF_BUSTYPE_SDIO) + return; + + if (of_property_read_u32(np, "brcm,drive-strength", &val) == 0) + sdio->drive_strength = val; + + /* make sure there are interrupts defined in the node */ + if (!of_property_present(np, "interrupts")) + return; + + irq = irq_of_parse_and_map(np, 0); + if (!irq) { + brcmf_err("interrupt could not be mapped\n"); + return; + } + irqf = irqd_get_trigger_type(irq_get_irq_data(irq)); + + sdio->oob_irq_supported = true; + sdio->oob_irq_nr = irq; + sdio->oob_irq_flags = irqf; +} |