1 files changed, 117 insertions, 27 deletions

diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c
index 84e3373289eb..1681ad00f82e 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c
@@ -1,21 +1,12 @@
+// SPDX-License-Identifier: ISC
 /*
  * Copyright (c) 2014 Broadcom Corporation
- *
- * Permission to use, copy, modify, and/or distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
- * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
- * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
- * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 #include <linux/init.h>
 #include <linux/of.h>
 #include <linux/of_irq.h>
+#include <linux/of_net.h>
+#include <linux/clk.h>
 
 #include <defs.h>
 #include "debug.h"
@@ -23,43 +14,142 @@
 #include "common.h"
 #include "of.h"
 
-void brcmf_of_probe(struct device *dev, enum brcmf_bus_type bus_type,
-		    struct brcmf_mp_device *settings)
+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;
+}
+
+int 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;
-	struct property *prop;
+	struct of_phandle_args oirq;
+	struct clk *clk;
+	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) {
-		prop = of_find_property(root, "compatible", NULL);
-		settings->board_type = of_prop_next_string(prop, NULL);
-		of_node_put(root);
+	if (root && err) {
+		char *board_type = NULL;
+		const char *tmp;
+
+		/* get rid of '/' in the compatible string to be able to find the FW */
+		if (!of_property_read_string_index(root, "compatible", 0, &tmp))
+			board_type = devm_kstrdup(dev, tmp, GFP_KERNEL);
+
+		if (!board_type) {
+			of_node_put(root);
+			return 0;
+		}
+		strreplace(board_type, '/', '-');
+		settings->board_type = board_type;
 	}
+	of_node_put(root);
 
-	if (!np || bus_type != BRCMF_BUSTYPE_SDIO ||
-	    !of_device_is_compatible(np, "brcm,bcm4329-fmac"))
-		return;
+	clk = devm_clk_get_optional_enabled_with_rate(dev, "lpo", 32768);
+	if (IS_ERR(clk))
+		return PTR_ERR(clk);
+
+	brcmf_dbg(INFO, "%s LPO clock\n", clk ? "enable" : "no");
+
+	if (!np || !of_device_is_compatible(np, "brcm,bcm4329-fmac"))
+		return 0;
+
+	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 0;
 
 	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_find_property(np, "interrupts", NULL))
-		return;
+	if (of_irq_parse_one(np, 0, &oirq))
+		return 0;
 
-	irq = irq_of_parse_and_map(np, 0);
+	irq = irq_create_of_mapping(&oirq);
 	if (!irq) {
 		brcmf_err("interrupt could not be mapped\n");
-		return;
+		return 0;
 	}
-	irqf = irqd_get_trigger_type(irq_get_irq_data(irq));
+	irqf = irq_get_trigger_type(irq);
 
 	sdio->oob_irq_supported = true;
 	sdio->oob_irq_nr = irq;
 	sdio->oob_irq_flags = irqf;
+
+	return 0;
 }