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111 lines
3.5 KiB
111 lines
3.5 KiB
From d06f26c5c8a41f246a9c40862a77a55725cedbd3 Mon Sep 17 00:00:00 2001
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From: Sven Eckelmann <sven.eckelmann@openmesh.com>
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Date: Fri, 8 Dec 2017 11:37:42 +0100
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Subject: ath10k: search DT for qcom,ath10k-calibration-variant
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Board Data File (BDF) is loaded upon driver boot-up procedure. The right
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board data file is identified on QCA4019 using bus, bmi-chip-id and
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bmi-board-id.
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The problem, however, can occur when the (default) board data file cannot
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fulfill with the vendor requirements and it is necessary to use a different
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board data file.
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This problem was solved for SMBIOS by adding a special SMBIOS type 0xF8.
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Something similar has to be provided for systems without SMBIOS but with
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device trees. No solution was specified by QCA and therefore a new one has
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to be found for ath10k.
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The device tree requires addition strings to define the variant name
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wifi@a000000 {
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status = "okay";
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qcom,ath10k-calibration-variant = "RT-AC58U";
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};
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wifi@a800000 {
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status = "okay";
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qcom,ath10k-calibration-variant = "RT-AC58U";
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};
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This would create the boarddata identifiers for the board-2.bin search
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* bus=ahb,bmi-chip-id=0,bmi-board-id=16,variant=RT-AC58U
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* bus=ahb,bmi-chip-id=0,bmi-board-id=17,variant=RT-AC58U
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Signed-off-by: Sven Eckelmann <sven.eckelmann@openmesh.com>
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Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
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---
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drivers/net/wireless/ath/ath10k/core.c | 40 ++++++++++++++++++++++++++++------
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1 file changed, 33 insertions(+), 7 deletions(-)
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--- a/drivers/net/wireless/ath/ath10k/core.c
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+++ b/drivers/net/wireless/ath/ath10k/core.c
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@@ -860,6 +860,28 @@ static int ath10k_core_check_smbios(stru
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return 0;
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}
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+static int ath10k_core_check_dt(struct ath10k *ar)
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+{
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+ struct device_node *node;
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+ const char *variant = NULL;
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+
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+ node = ar->dev->of_node;
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+ if (!node)
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+ return -ENOENT;
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+
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+ of_property_read_string(node, "qcom,ath10k-calibration-variant",
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+ &variant);
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+ if (!variant)
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+ return -ENODATA;
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+
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+ if (strscpy(ar->id.bdf_ext, variant, sizeof(ar->id.bdf_ext)) < 0)
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+ ath10k_dbg(ar, ATH10K_DBG_BOOT,
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+ "bdf variant string is longer than the buffer can accommodate (variant: %s)\n",
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+ variant);
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+
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+ return 0;
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+}
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+
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static int ath10k_download_and_run_otp(struct ath10k *ar)
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{
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u32 result, address = ar->hw_params.patch_load_addr;
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@@ -1231,19 +1253,19 @@ static int ath10k_core_create_board_name
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/* strlen(',variant=') + strlen(ar->id.bdf_ext) */
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char variant[9 + ATH10K_SMBIOS_BDF_EXT_STR_LENGTH] = { 0 };
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+ if (ar->id.bdf_ext[0] != '\0')
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+ scnprintf(variant, sizeof(variant), ",variant=%s",
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+ ar->id.bdf_ext);
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+
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if (ar->id.bmi_ids_valid) {
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scnprintf(name, name_len,
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- "bus=%s,bmi-chip-id=%d,bmi-board-id=%d",
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+ "bus=%s,bmi-chip-id=%d,bmi-board-id=%d%s",
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ath10k_bus_str(ar->hif.bus),
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ar->id.bmi_chip_id,
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- ar->id.bmi_board_id);
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+ ar->id.bmi_board_id, variant);
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goto out;
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}
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- if (ar->id.bdf_ext[0] != '\0')
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- scnprintf(variant, sizeof(variant), ",variant=%s",
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- ar->id.bdf_ext);
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-
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scnprintf(name, name_len,
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"bus=%s,vendor=%04x,device=%04x,subsystem-vendor=%04x,subsystem-device=%04x%s",
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ath10k_bus_str(ar->hif.bus),
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@@ -2343,7 +2365,11 @@ static int ath10k_core_probe_fw(struct a
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ret = ath10k_core_check_smbios(ar);
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if (ret)
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- ath10k_dbg(ar, ATH10K_DBG_BOOT, "bdf variant name not set.\n");
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+ ath10k_dbg(ar, ATH10K_DBG_BOOT, "SMBIOS bdf variant name not set.\n");
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+
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+ ret = ath10k_core_check_dt(ar);
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+ if (ret)
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+ ath10k_dbg(ar, ATH10K_DBG_BOOT, "DT bdf variant name not set.\n");
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ret = ath10k_core_fetch_board_file(ar);
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if (ret) {
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