When the EEPROM data is read from flash, it can contain pre-calibration
data, which can save calibration time.
Note that group_cal can save 30% bootup calibration time, and dpd_cal can
save 75% channel switching time.
Tested-by: Bo Jiao <bo.jiao@xxxxxxxxxxxx>
Signed-off-by: Ryder Lee <ryder.lee@xxxxxxxxxxxx>
---
change since v2 - use min_t instead.
---
drivers/net/wireless/mediatek/mt76/eeprom.c | 11 +-
drivers/net/wireless/mediatek/mt76/mt76.h | 1 +
.../wireless/mediatek/mt76/mt7915/eeprom.c | 25 ++-
.../wireless/mediatek/mt76/mt7915/eeprom.h | 11 +-
.../net/wireless/mediatek/mt76/mt7915/init.c | 7 +
.../net/wireless/mediatek/mt76/mt7915/main.c | 6 +
.../net/wireless/mediatek/mt76/mt7915/mcu.c | 142 ++++++++++++++++++
.../net/wireless/mediatek/mt76/mt7915/mcu.h | 2 +
.../wireless/mediatek/mt76/mt7915/mt7915.h | 4 +
9 files changed, 199 insertions(+), 10 deletions(-)
diff --git a/drivers/net/wireless/mediatek/mt76/eeprom.c b/drivers/net/wireless/mediatek/mt76/eeprom.c
index 665b54c5c8ae..3f7a5a508605 100644
--- a/drivers/net/wireless/mediatek/mt76/eeprom.c
+++ b/drivers/net/wireless/mediatek/mt76/eeprom.c
@@ -9,8 +9,7 @@
#include <linux/etherdevice.h>
#include "mt76.h"
-static int
-mt76_get_of_eeprom(struct mt76_dev *dev, int len)
+int mt76_get_of_eeprom(struct mt76_dev *dev, void *eep, int offset, int len)
{
#if defined(CONFIG_OF) && defined(CONFIG_MTD)
struct device_node *np = dev->dev->of_node;
@@ -18,7 +17,6 @@ mt76_get_of_eeprom(struct mt76_dev *dev, int len)
const __be32 *list;
const char *part;
phandle phandle;
- int offset = 0;
int size;
size_t retlen;
int ret;
@@ -54,7 +52,7 @@ mt76_get_of_eeprom(struct mt76_dev *dev, int len)
}
offset = be32_to_cpup(list);
- ret = mtd_read(mtd, offset, len, &retlen, dev->eeprom.data);
+ ret = mtd_read(mtd, offset, len, &retlen, eep);
put_mtd_device(mtd);
if (ret)
goto out_put_node;
@@ -65,7 +63,7 @@ mt76_get_of_eeprom(struct mt76_dev *dev, int len)
}
if (of_property_read_bool(dev->dev->of_node, "big-endian")) {
- u8 *data = (u8 *)dev->eeprom.data;
+ u8 *data = (u8 *)eep;
int i;
/* convert eeprom data in Little Endian */
@@ -86,6 +84,7 @@ mt76_get_of_eeprom(struct mt76_dev *dev, int len)
return -ENOENT;
#endif
}
+EXPORT_SYMBOL_GPL(mt76_get_of_eeprom);
void
mt76_eeprom_override(struct mt76_phy *phy)
@@ -119,6 +118,6 @@ mt76_eeprom_init(struct mt76_dev *dev, int len)
if (!dev->eeprom.data)
return -ENOMEM;
- return !mt76_get_of_eeprom(dev, len);
+ return !mt76_get_of_eeprom(dev, dev->eeprom.data, 0, len);
}
EXPORT_SYMBOL_GPL(mt76_eeprom_init);
diff --git a/drivers/net/wireless/mediatek/mt76/mt76.h b/drivers/net/wireless/mediatek/mt76/mt76.h
index b09b0f5ffd6d..1b290d3bd7aa 100644
--- a/drivers/net/wireless/mediatek/mt76/mt76.h
+++ b/drivers/net/wireless/mediatek/mt76/mt76.h
@@ -828,6 +828,7 @@ void mt76_seq_puts_array(struct seq_file *file, const char *str,
int mt76_eeprom_init(struct mt76_dev *dev, int len);
void mt76_eeprom_override(struct mt76_phy *phy);
+int mt76_get_of_eeprom(struct mt76_dev *dev, void *data, int offset, int len);
struct mt76_queue *
mt76_init_queue(struct mt76_dev *dev, int qid, int idx, int n_desc,
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/eeprom.c b/drivers/net/wireless/mediatek/mt76/mt7915/eeprom.c
index 738ecf8f4fa2..353f8d8497d5 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/eeprom.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/eeprom.c
@@ -14,6 +14,23 @@ static u32 mt7915_eeprom_read(struct mt7915_dev *dev, u32 offset)
return data[offset];
}
+static int mt7915_eeprom_load_precal(struct mt7915_dev *dev)
+{
+ struct mt76_dev *mdev = &dev->mt76;
+ u32 val;
+
+ val = mt7915_eeprom_read(dev, MT_EE_DO_PRE_CAL);
+ if (val != (MT_EE_WIFI_CAL_DPD | MT_EE_WIFI_CAL_GROUP))
+ return 0;
+
+ val = MT_EE_CAL_GROUP_SIZE + MT_EE_CAL_DPD_SIZE;
+ dev->cal = devm_kzalloc(mdev->dev, val, GFP_KERNEL);
+ if (!dev->cal)
+ return -ENOMEM;
+
+ return mt76_get_of_eeprom(mdev, dev->cal, MT_EE_PRECAL, val);
+}
+
static int mt7915_eeprom_load(struct mt7915_dev *dev)
{
int ret;
@@ -22,12 +39,14 @@ static int mt7915_eeprom_load(struct mt7915_dev *dev)
if (ret < 0)
return ret;
- if (ret)
+ if (ret) {
dev->flash_mode = true;
- else
+ ret = mt7915_eeprom_load_precal(dev);
+ } else {
memset(dev->mt76.eeprom.data, -1, MT7915_EEPROM_SIZE);
+ }
- return 0;
+ return ret;
}
static int mt7915_check_eeprom(struct mt7915_dev *dev)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/eeprom.h b/drivers/net/wireless/mediatek/mt76/mt7915/eeprom.h
index 3ee8c27bb61b..8ef5ebfad706 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/eeprom.h
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/eeprom.h
@@ -17,14 +17,23 @@ enum mt7915_eeprom_field {
MT_EE_MAC_ADDR = 0x004,
MT_EE_MAC_ADDR2 = 0x00a,
MT_EE_DDIE_FT_VERSION = 0x050,
+ MT_EE_DO_PRE_CAL = 0x062,
MT_EE_WIFI_CONF = 0x190,
MT_EE_TX0_POWER_2G = 0x2fc,
MT_EE_TX0_POWER_5G = 0x34b,
MT_EE_ADIE_FT_VERSION = 0x9a0,
- __MT_EE_MAX = 0xe00
+ __MT_EE_MAX = 0xe00,
+ /* 0xe10 ~ 0x5780 used to save group cal data */
+ MT_EE_PRECAL = 0xe10
};
+#define MT_EE_WIFI_CAL_GROUP BIT(0)
+#define MT_EE_WIFI_CAL_DPD GENMASK(2, 1)
+#define MT_EE_CAL_UNIT 1024
+#define MT_EE_CAL_GROUP_SIZE (44 * MT_EE_CAL_UNIT)
+#define MT_EE_CAL_DPD_SIZE (54 * MT_EE_CAL_UNIT)
+
#define MT_EE_WIFI_CONF0_TX_PATH GENMASK(2, 0)
#define MT_EE_WIFI_CONF0_BAND_SEL GENMASK(7, 6)
#define MT_EE_WIFI_CONF1_BAND_SEL GENMASK(7, 6)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/init.c b/drivers/net/wireless/mediatek/mt76/mt7915/init.c
index 1b688bd5c52c..3f9f74aa8399 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/init.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/init.c
@@ -378,6 +378,13 @@ static int mt7915_init_hardware(struct mt7915_dev *dev)
if (ret < 0)
return ret;
+
+ if (dev->flash_mode) {
+ ret = mt7915_mcu_apply_group_cal(dev);
+ if (ret)
+ return ret;
+ }
+
/* Beacon and mgmt frames should occupy wcid 0 */
idx = mt76_wcid_alloc(dev->mt76.wcid_mask, MT7915_WTBL_STA - 1);
if (idx)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/main.c b/drivers/net/wireless/mediatek/mt76/mt7915/main.c
index 2fd87987312e..413abbca3246 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/main.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/main.c
@@ -313,6 +313,12 @@ int mt7915_set_channel(struct mt7915_phy *phy)
mt7915_init_dfs_state(phy);
mt76_set_channel(phy->mt76);
+ if (dev->flash_mode) {
+ ret = mt7915_mcu_apply_tx_dpd(phy);
+ if (ret)
+ goto out;
+ }
+
ret = mt7915_mcu_set_chan_info(phy, MCU_EXT_CMD(CHANNEL_SWITCH));
if (ret)
goto out;
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
index 0b739ed8ce33..bf5ea461d585 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
@@ -3327,6 +3327,148 @@ int mt7915_mcu_get_eeprom(struct mt7915_dev *dev, u32 offset)
return 0;
}
+static int mt7915_mcu_set_pre_cal(struct mt7915_dev *dev, u8 idx,
+ u8 *data, u32 len, int cmd)
+{
+ struct {
+ u8 dir;
+ u8 valid;
+ __le16 bitmap;
+ s8 precal;
+ u8 action;
+ u8 band;
+ u8 idx;
+ u8 rsv[4];
+ __le32 len;
+ } req;
+ struct sk_buff *skb;
+
+ skb = mt76_mcu_msg_alloc(&dev->mt76, NULL, sizeof(req) + len);
+ if (!skb)
+ return -ENOMEM;
+
+ req.idx = idx;
+ req.len = cpu_to_le32(len);
+ skb_put_data(skb, &req, sizeof(req));
+ skb_put_data(skb, data, len);
+
+ return mt76_mcu_skb_send_msg(&dev->mt76, skb, cmd, false);
+}
+
+int mt7915_mcu_apply_group_cal(struct mt7915_dev *dev)
+{
+ u8 idx = 0, *cal = dev->cal, *eep = dev->mt76.eeprom.data;
+ u32 total = MT_EE_CAL_GROUP_SIZE;
+
+ if (!(eep[MT_EE_DO_PRE_CAL] & MT_EE_WIFI_CAL_GROUP))
+ return 0;
+
+ /*
+ * Items: Rx DCOC, RSSI DCOC, Tx TSSI DCOC, Tx LPFG
+ * Tx FDIQ, Tx DCIQ, Rx FDIQ, Rx FIIQ, ADCDCOC
+ */
+ while (total > 0) {
+ int ret, len;
+
+ len = min_t(u32, total, MT_EE_CAL_UNIT);
+
+ ret = mt7915_mcu_set_pre_cal(dev, idx, cal, len,
+ MCU_EXT_CMD(GROUP_PRE_CAL_INFO));
+ if (ret)
+ return ret;
+
+ total -= len;
+ cal += len;
+ idx++;
+ }
+
+ return 0;
+}
+
+static int mt7915_find_freq_idx(const u16 *freqs, int n_freqs, u16 cur)
+{
+ int i;
+
+ for (i = 0; i < n_freqs; i++)
+ if (cur == freqs[i])
+ return i;
+
+ return -1;
+}
+
+static int mt7915_dpd_freq_idx(u16 freq, u8 bw)
+{
+ static const u16 freq_list[] = {
+ 5180, 5200, 5220, 5240,
+ 5260, 5280, 5300, 5320,
+ 5500, 5520, 5540, 5560,
+ 5580, 5600, 5620, 5640,
+ 5660, 5680, 5700, 5745,
+ 5765, 5785, 5805, 5825
+ };
+ int offset_2g = ARRAY_SIZE(freq_list);
+ int idx;
+
+ if (freq < 4000) {
+ if (freq < 2432)
+ return offset_2g;
+ if (freq < 2457)
+ return offset_2g + 1;
+
+ return offset_2g + 2;
+ }
+
+ if (bw == NL80211_CHAN_WIDTH_80P80 || bw == NL80211_CHAN_WIDTH_160)
+ return -1;
+
+ if (bw != NL80211_CHAN_WIDTH_20) {
+ idx = mt7915_find_freq_idx(freq_list, ARRAY_SIZE(freq_list),
+ freq + 10);
+ if (idx >= 0)
+ return idx;
+
+ idx = mt7915_find_freq_idx(freq_list, ARRAY_SIZE(freq_list),
+ freq - 10);
+ if (idx >= 0)
+ return idx;
+ }
+
+ return mt7915_find_freq_idx(freq_list, ARRAY_SIZE(freq_list), freq);
+}
+
+int mt7915_mcu_apply_tx_dpd(struct mt7915_phy *phy)
+{
+ struct mt7915_dev *dev = phy->dev;
+ struct cfg80211_chan_def *chandef = &phy->mt76->chandef;
+ u16 total = 2, idx, center_freq = chandef->center_freq1;
+ u8 *cal = dev->cal, *eep = dev->mt76.eeprom.data;
+
+ if (!(eep[MT_EE_DO_PRE_CAL] & MT_EE_WIFI_CAL_DPD))
+ return 0;
+
+ idx = mt7915_dpd_freq_idx(center_freq, chandef->width);
+ if (idx < 0)
+ return -EINVAL;
+
+ /* Items: Tx DPD, Tx Flatness */
+ idx = idx * 2;
+ cal += MT_EE_CAL_GROUP_SIZE;
+
+ while (total--) {
+ int ret;
+
+ cal += (idx * MT_EE_CAL_UNIT);
+ ret = mt7915_mcu_set_pre_cal(dev, idx, cal, MT_EE_CAL_UNIT,
+ MCU_EXT_CMD(DPD_PRE_CAL_INFO));
+ if (ret)
+ return ret;
+
+ idx++;
+ }
+
+ return 0;
+}
+
int mt7915_mcu_get_temperature(struct mt7915_dev *dev, int index)
{
struct {
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.h b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.h
index 4a932140a7c3..42582a66e42d 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.h
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.h
@@ -284,6 +284,8 @@ enum {
MCU_EXT_CMD_FW_DBG_CTRL = 0x95,
MCU_EXT_CMD_SET_RDD_TH = 0x9d,
MCU_EXT_CMD_SET_SPR = 0xa8,
+ MCU_EXT_CMD_GROUP_PRE_CAL_INFO = 0xab,
+ MCU_EXT_CMD_DPD_PRE_CAL_INFO = 0xac,
MCU_EXT_CMD_PHY_STAT_INFO = 0xad,
};
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h b/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h
index 3df1d3e95b25..15e88179ab62 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h
@@ -201,6 +201,8 @@ struct mt7915_dev {
bool flash_mode;
bool fw_debug;
bool ibf;
+
+ void *cal;
};
enum {
@@ -359,6 +361,8 @@ int mt7915_mcu_set_pulse_th(struct mt7915_dev *dev,
const struct mt7915_dfs_pulse *pulse);
int mt7915_mcu_set_radar_th(struct mt7915_dev *dev, int index,
const struct mt7915_dfs_pattern *pattern);
+int mt7915_mcu_apply_group_cal(struct mt7915_dev *dev);
+int mt7915_mcu_apply_tx_dpd(struct mt7915_phy *phy);
int mt7915_mcu_get_temperature(struct mt7915_dev *dev, int index);
int mt7915_mcu_get_tx_rate(struct mt7915_dev *dev, u32 cmd, u16 wlan_idx);
int mt7915_mcu_get_rx_rate(struct mt7915_phy *phy, struct ieee80211_vif *vif,
--
2.18.0
