Most of routers that have the ath10k wifi chip integrated in the Soc
have the pre-cal data stored in the art (or equivalent) mtd partition.
Introduce a new function to directly extract and use it based on what is
set in the dt if the system have mtd support.
Pre-cal file have still priority to everything else.
Tested-on: QCA9984 hw1.0 PCI 10.4
Signed-off-by: Ansuel Smith <ansuelsmth@xxxxxxxxx>
---
drivers/net/wireless/ath/ath10k/core.c | 74 ++++++++++++++++++++++++++
drivers/net/wireless/ath/ath10k/core.h | 3 ++
2 files changed, 77 insertions(+)
diff --git a/drivers/net/wireless/ath/ath10k/core.c b/drivers/net/wireless/ath/ath10k/core.c
index 5f4e12196..eef00d657 100644
--- a/drivers/net/wireless/ath/ath10k/core.c
+++ b/drivers/net/wireless/ath/ath10k/core.c
@@ -13,6 +13,7 @@
#include <linux/ctype.h>
#include <linux/pm_qos.h>
#include <asm/byteorder.h>
+#include <linux/mtd/mtd.h>
#include "core.h"
#include "mac.h"
@@ -1701,6 +1702,69 @@ static int ath10k_download_and_run_otp(struct ath10k *ar)
return 0;
}
+static int ath10k_download_cal_mtd(struct ath10k *ar)
+{
+#ifdef CONFIG_MTD
+ struct device_node *node, *mtd_node = NULL;
+ struct mtd_info *mtd;
+ const __be32 *list;
+ u32 offset, size;
+ const char *part;
+ phandle phandle;
+ size_t retlen;
+ char *file;
+ int ret;
+
+ node = ar->dev->of_node;
+ if (!node)
+ return -ENOENT;
+
+ list = of_get_property(node, "qcom,ath10k-pre-calibration-data-mtd", &size);
+ if (!list || (size != (3 * sizeof(*list))))
+ return -EINVAL;
+
+ phandle = be32_to_cpup(list++);
+ if (phandle)
+ mtd_node = of_find_node_by_phandle(phandle);
+
+ if (!mtd_node)
+ return -ENODEV;
+
+ part = of_get_property(mtd_node, "label", NULL);
+ if (!part)
+ part = mtd_node->name;
+
+ mtd = get_mtd_device_nm(part);
+ if (IS_ERR(mtd))
+ return -ENODEV;
+
+ offset = be32_to_cpup(list++);
+ size = be32_to_cpup(list);
+
+ file = kzalloc(size, GFP_KERNEL);
+ if (!file)
+ return -ENOMEM;
+
+ ret = mtd_read(mtd, offset, size, &retlen, file);
+ put_mtd_device(mtd);
+
+ ret = ath10k_download_board_data(ar, file, size);
+ if (ret) {
+ ath10k_err(ar, "failed to download cal_file data: %d\n", ret);
+ goto err;
+ }
+
+ ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot cal file downloaded\n");
+
+ return 0;
+
+err:
+ kfree(file);
+ return ret;
+#endif
+ return -EOPNOTSUPP;
+}
+
static int ath10k_download_cal_file(struct ath10k *ar,
const struct firmware *file)
{
@@ -2047,6 +2111,16 @@ static int ath10k_core_pre_cal_download(struct ath10k *ar)
goto success;
}
+ ath10k_dbg(ar, ATH10K_DBG_BOOT,
+ "boot did not find a pre calibration file, try MTD next: %d\n",
+ ret);
+
+ ret = ath10k_download_cal_mtd(ar);
+ if (ret == 0) {
+ ar->cal_mode = ATH10K_PRE_CAL_MODE_MTD;
+ goto success;
+ }
+
ath10k_dbg(ar, ATH10K_DBG_BOOT,
"boot did not find a pre calibration file, try DT next: %d\n",
ret);
diff --git a/drivers/net/wireless/ath/ath10k/core.h b/drivers/net/wireless/ath/ath10k/core.h
index 4cf5bd489..3ca158605 100644
--- a/drivers/net/wireless/ath/ath10k/core.h
+++ b/drivers/net/wireless/ath/ath10k/core.h
@@ -864,6 +864,7 @@ enum ath10k_cal_mode {
ATH10K_CAL_MODE_OTP,
ATH10K_CAL_MODE_DT,
ATH10K_PRE_CAL_MODE_FILE,
+ ATH10K_PRE_CAL_MODE_MTD,
ATH10K_PRE_CAL_MODE_DT,
ATH10K_CAL_MODE_EEPROM,
};
@@ -886,6 +887,8 @@ static inline const char *ath10k_cal_mode_str(enum ath10k_cal_mode mode)
return "dt";
case ATH10K_PRE_CAL_MODE_FILE:
return "pre-cal-file";
+ case ATH10K_PRE_CAL_MODE_MTD:
+ return "pre-cal-mtd";
case ATH10K_PRE_CAL_MODE_DT:
return "pre-cal-dt";
case ATH10K_CAL_MODE_EEPROM:
--
2.27.0
