[PATCH] mt76: mt7915: use mt7915_mcu_get_txpower_sku() to get per-rate txpower
Lorenzo Bianconi
lorenzo at kernel.org
Tue May 25 00:22:06 PDT 2021
> Get per-rate txpower with mcu command instead of frequently access tmac
> power registers from driver.
Hi Shayne,
just out of curiosity, what is the advantage of doing so?
Regards,
Lorenzo
>
> Signed-off-by: Shayne Chen <shayne.chen at mediatek.com>
> ---
> .../wireless/mediatek/mt76/mt7915/debugfs.c | 48 ++++---------------
> .../net/wireless/mediatek/mt76/mt7915/mcu.c | 35 +++++++++++++-
> .../wireless/mediatek/mt76/mt7915/mt7915.h | 3 ++
> .../net/wireless/mediatek/mt76/mt7915/regs.h | 5 --
> 4 files changed, 46 insertions(+), 45 deletions(-)
>
> diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/debugfs.c b/drivers/net/wireless/mediatek/mt76/mt7915/debugfs.c
> index 6a8ddee..42a829d 100644
> --- a/drivers/net/wireless/mediatek/mt76/mt7915/debugfs.c
> +++ b/drivers/net/wireless/mediatek/mt76/mt7915/debugfs.c
> @@ -308,53 +308,23 @@ mt7915_puts_rate_txpower(struct seq_file *s, struct mt7915_phy *phy)
> "RU484/SU40", "RU996/SU80", "RU2x996/SU160"
> };
> struct mt7915_dev *dev = dev_get_drvdata(s->private);
> - bool ext_phy = phy != &dev->phy;
> - u32 reg_base;
> - int i, idx = 0;
> + s8 txpower[MT7915_SKU_RATE_NUM], *buf;
> + int i;
>
> if (!phy)
> return;
>
> - reg_base = MT_TMAC_FP0R0(ext_phy);
> - seq_printf(s, "\nBand %d\n", ext_phy);
> + seq_printf(s, "\nBand %d\n", phy != &dev->phy);
>
> - for (i = 0; i < ARRAY_SIZE(mt7915_sku_group_len); i++) {
> - u8 cnt, mcs_num = mt7915_sku_group_len[i];
> - s8 txpower[12];
> - int j;
> + mt7915_mcu_get_txpower_sku(phy, txpower, sizeof(txpower));
> + for (i = 0, buf = txpower; i < ARRAY_SIZE(mt7915_sku_group_len); i++) {
> + u8 mcs_num = mt7915_sku_group_len[i];
>
> - if (i == SKU_HT_BW20 || i == SKU_HT_BW40) {
> - mcs_num = 8;
> - } else if (i >= SKU_VHT_BW20 && i <= SKU_VHT_BW160) {
> + if (i >= SKU_VHT_BW20 && i <= SKU_VHT_BW160)
> mcs_num = 10;
> - } else if (i == SKU_HE_RU26) {
> - reg_base = MT_TMAC_FP0R18(ext_phy);
> - idx = 0;
> - }
> -
> - for (j = 0, cnt = 0; j < DIV_ROUND_UP(mcs_num, 4); j++) {
> - u32 val;
> -
> - if (i == SKU_VHT_BW160 && idx == 60) {
> - reg_base = MT_TMAC_FP0R15(ext_phy);
> - idx = 0;
> - }
> -
> - val = mt76_rr(dev, reg_base + (idx / 4) * 4);
> -
> - if (idx && idx % 4)
> - val >>= (idx % 4) * 8;
> -
> - while (val > 0 && cnt < mcs_num) {
> - s8 pwr = FIELD_GET(MT_TMAC_FP_MASK, val);
> -
> - txpower[cnt++] = pwr;
> - val >>= 8;
> - idx++;
> - }
> - }
>
> - mt76_seq_puts_array(s, sku_group_name[i], txpower, mcs_num);
> + mt76_seq_puts_array(s, sku_group_name[i], buf, mcs_num);
> + buf += mt7915_sku_group_len[i];
> }
> }
>
> diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
> index dcf2d4d..52671cc 100644
> --- a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
> +++ b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
> @@ -3514,7 +3514,6 @@ int mt7915_mcu_get_tx_rate(struct mt7915_dev *dev, u32 cmd, u16 wlan_idx)
>
> int mt7915_mcu_set_txpower_sku(struct mt7915_phy *phy)
> {
> -#define MT7915_SKU_RATE_NUM 161
> struct mt7915_dev *dev = phy->dev;
> struct mt76_phy *mphy = phy->mt76;
> struct ieee80211_hw *hw = mphy->hw;
> @@ -3564,6 +3563,40 @@ int mt7915_mcu_set_txpower_sku(struct mt7915_phy *phy)
> sizeof(req), true);
> }
>
> +int mt7915_mcu_get_txpower_sku(struct mt7915_phy *phy, s8 *txpower, int len)
> +{
> +#define RATE_POWER_INFO 2
> + struct mt7915_dev *dev = phy->dev;
> + bool ext_phy = phy != &dev->phy;
> + struct {
> + u8 format_id;
> + u8 category;
> + u8 band;
> + u8 _rsv;
> + } __packed req = {
> + .format_id = 7,
> + .category = RATE_POWER_INFO,
> + .band = ext_phy,
> + };
> + s8 res[MT7915_SKU_RATE_NUM][2];
> + struct sk_buff *skb;
> + int ret, i;
> +
> + ret = mt76_mcu_send_and_get_msg(&dev->mt76,
> + MCU_EXT_CMD(TX_POWER_FEATURE_CTRL),
> + &req, sizeof(req), true, &skb);
> + if (ret)
> + return ret;
> +
> + memcpy(res, skb->data + 4, sizeof(res));
> + for (i = 0; i < len; i++)
> + txpower[i] = res[i][ext_phy];
> +
> + dev_kfree_skb(skb);
> +
> + return 0;
> +}
> +
> int mt7915_mcu_set_test_param(struct mt7915_dev *dev, u8 param, bool test_mode,
> u8 en)
> {
> diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h b/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h
> index c4bf8ed..1f7e57d 100644
> --- a/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h
> +++ b/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h
> @@ -38,6 +38,8 @@
> #define MT7915_5G_RATE_DEFAULT 0x4b /* OFDM 6M */
> #define MT7915_2G_RATE_DEFAULT 0x0 /* CCK 1M */
>
> +#define MT7915_SKU_RATE_NUM 161
> +
> struct mt7915_vif;
> struct mt7915_sta;
> struct mt7915_dfs_pulse;
> @@ -343,6 +345,7 @@ int mt7915_mcu_set_rts_thresh(struct mt7915_phy *phy, u32 val);
> int mt7915_mcu_set_pm(struct mt7915_dev *dev, int band, int enter);
> int mt7915_mcu_set_sku_en(struct mt7915_phy *phy, bool enable);
> int mt7915_mcu_set_txpower_sku(struct mt7915_phy *phy);
> +int mt7915_mcu_get_txpower_sku(struct mt7915_phy *phy, s8 *txpower, int len);
> int mt7915_mcu_set_txbf_type(struct mt7915_dev *dev);
> int mt7915_mcu_set_txbf_module(struct mt7915_dev *dev);
> int mt7915_mcu_set_txbf_sounding(struct mt7915_dev *dev);
> diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/regs.h b/drivers/net/wireless/mediatek/mt76/mt7915/regs.h
> index 48e4b22..ee525e7 100644
> --- a/drivers/net/wireless/mediatek/mt76/mt7915/regs.h
> +++ b/drivers/net/wireless/mediatek/mt76/mt7915/regs.h
> @@ -82,11 +82,6 @@
> #define MT_TMAC_CTCR0_INS_DDLMT_EN BIT(17)
> #define MT_TMAC_CTCR0_INS_DDLMT_VHT_SMPDU_EN BIT(18)
>
> -#define MT_TMAC_FP0R0(_band) MT_WF_TMAC(_band, 0x020)
> -#define MT_TMAC_FP0R15(_band) MT_WF_TMAC(_band, 0x080)
> -#define MT_TMAC_FP0R18(_band) MT_WF_TMAC(_band, 0x270)
> -#define MT_TMAC_FP_MASK GENMASK(7, 0)
> -
> #define MT_TMAC_TFCR0(_band) MT_WF_TMAC(_band, 0x1e0)
>
> #define MT_WF_DMA_BASE(_band) ((_band) ? 0xa1e00 : 0x21e00)
> --
> 2.18.0
>
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