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Message-ID: <0ebf9f47-16bd-aad0-309f-af7616292785@gmail.com>
Date:   Thu, 1 Dec 2022 17:55:06 +0200
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Subject: Re: [PATCH v3] wifi: rtl8xxxu: fixing IQK failures for rtl8192eu
Content-Language: en-US
To:     Jun ASAKA <JunASAKA@zzy040330.moe>, Jes.Sorensen@gmail.com
Cc:     kvalo@kernel.org, davem@davemloft.net, edumazet@google.com,
        kuba@kernel.org, pabeni@redhat.com, linux-wireless@vger.kernel.org,
        netdev@vger.kernel.org, linux-kernel@vger.kernel.org
References: <20221201145500.7832-1-JunASAKA@zzy040330.moe>
From:   Bitterblue Smith <rtl8821cerfe2@gmail.com>
In-Reply-To: <20221201145500.7832-1-JunASAKA@zzy040330.moe>
Content-Type: text/plain; charset=UTF-8
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Precedence: bulk

On 01/12/2022 16:55, Jun ASAKA wrote:
> Fixing "Path A RX IQK failed" and "Path B RX IQK failed"
> issues for rtl8192eu chips by replacing the arguments with
> the ones in the updated official driver as shown below.
> 1. https://github.com/Mange/rtl8192eu-linux-driver
> 2. vendor driver version: 5.6.4
> 
> Tested-by: Jun ASAKA <JunASAKA@zzy040330.moe>
> Signed-off-by: Jun ASAKA <JunASAKA@zzy040330.moe>
> ---
> v3: 
>  - add detailed info about the newer version this patch used.
>  - no functional update.
> ---
>  .../realtek/rtl8xxxu/rtl8xxxu_8192e.c         | 76 +++++++++++++------
>  1 file changed, 54 insertions(+), 22 deletions(-)
> 
> diff --git a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8192e.c b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8192e.c
> index b06508d0cd..82346500f2 100644
> --- a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8192e.c
> +++ b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8192e.c
> @@ -734,6 +734,12 @@ static int rtl8192eu_iqk_path_a(struct rtl8xxxu_priv *priv)
>  	 */
>  	rtl8xxxu_write32(priv, REG_FPGA0_IQK, 0x00000000);
>  	rtl8xxxu_write_rfreg(priv, RF_A, RF6052_REG_UNKNOWN_DF, 0x00180);
> +
> +	rtl8xxxu_write_rfreg(priv, RF_A, RF6052_REG_WE_LUT, 0x800a0);
> +	rtl8xxxu_write_rfreg(priv, RF_A, RF6052_REG_RCK_OS, 0x20000);
> +	rtl8xxxu_write_rfreg(priv, RF_A, RF6052_REG_TXPA_G1, 0x0000f);
> +	rtl8xxxu_write_rfreg(priv, RF_A, RF6052_REG_TXPA_G2, 0x07f77);
> +>  	rtl8xxxu_write32(priv, REG_FPGA0_IQK, 0x80800000);
>  
>  	/* Path A IQK setting */
> @@ -779,11 +785,16 @@ static int rtl8192eu_rx_iqk_path_a(struct rtl8xxxu_priv *priv)
>  	rtl8xxxu_write_rfreg(priv, RF_A, RF6052_REG_WE_LUT, 0x800a0);
>  	rtl8xxxu_write_rfreg(priv, RF_A, RF6052_REG_RCK_OS, 0x30000);
>  	rtl8xxxu_write_rfreg(priv, RF_A, RF6052_REG_TXPA_G1, 0x0000f);
> -	rtl8xxxu_write_rfreg(priv, RF_A, RF6052_REG_TXPA_G2, 0xf117b);
> +	rtl8xxxu_write_rfreg(priv, RF_A, RF6052_REG_TXPA_G2, 0xf1173);
> +
> +	rtl8xxxu_write_rfreg(priv, RF_B, RF6052_REG_WE_LUT, 0x800a0);
> +	rtl8xxxu_write_rfreg(priv, RF_B, RF6052_REG_RCK_OS, 0x30000);
> +	rtl8xxxu_write_rfreg(priv, RF_B, RF6052_REG_TXPA_G1, 0x0000f);
> +	rtl8xxxu_write_rfreg(priv, RF_B, RF6052_REG_TXPA_G2, 0xf1173);
>  
>  	/* PA/PAD control by 0x56, and set = 0x0 */
>  	rtl8xxxu_write_rfreg(priv, RF_A, RF6052_REG_UNKNOWN_DF, 0x00980);
> -	rtl8xxxu_write_rfreg(priv, RF_A, RF6052_REG_UNKNOWN_56, 0x51000);
> +	rtl8xxxu_write_rfreg(priv, RF_A, RF6052_REG_UNKNOWN_56, 0x511e0);
>  
>  	/* Enter IQK mode */
>  	rtl8xxxu_write32(priv, REG_FPGA0_IQK, 0x80800000);
> @@ -798,14 +809,14 @@ static int rtl8192eu_rx_iqk_path_a(struct rtl8xxxu_priv *priv)
>  	rtl8xxxu_write32(priv, REG_TX_IQK_TONE_B, 0x38008c1c);
>  	rtl8xxxu_write32(priv, REG_RX_IQK_TONE_B, 0x38008c1c);
>  
> -	rtl8xxxu_write32(priv, REG_TX_IQK_PI_A, 0x82160c1f);
> -	rtl8xxxu_write32(priv, REG_RX_IQK_PI_A, 0x68160c1f);
> +	rtl8xxxu_write32(priv, REG_TX_IQK_PI_A, 0x8216031f);
> +	rtl8xxxu_write32(priv, REG_RX_IQK_PI_A, 0x6816031f);
>  
>  	/* LO calibration setting */
>  	rtl8xxxu_write32(priv, REG_IQK_AGC_RSP, 0x0046a911);
>  
>  	/* One shot, path A LOK & IQK */
> -	rtl8xxxu_write32(priv, REG_IQK_AGC_PTS, 0xfa000000);
> +	rtl8xxxu_write32(priv, REG_IQK_AGC_PTS, 0xf9000000);
>  	rtl8xxxu_write32(priv, REG_IQK_AGC_PTS, 0xf8000000);
>  
>  	mdelay(10);
> @@ -836,11 +847,16 @@ static int rtl8192eu_rx_iqk_path_a(struct rtl8xxxu_priv *priv)
>  	rtl8xxxu_write_rfreg(priv, RF_A, RF6052_REG_WE_LUT, 0x800a0);
>  	rtl8xxxu_write_rfreg(priv, RF_A, RF6052_REG_RCK_OS, 0x30000);
>  	rtl8xxxu_write_rfreg(priv, RF_A, RF6052_REG_TXPA_G1, 0x0000f);
> -	rtl8xxxu_write_rfreg(priv, RF_A, RF6052_REG_TXPA_G2, 0xf7ffa);
> +	rtl8xxxu_write_rfreg(priv, RF_A, RF6052_REG_TXPA_G2, 0xf7ff2);
> +
> +	rtl8xxxu_write_rfreg(priv, RF_B, RF6052_REG_WE_LUT, 0x800a0);
> +	rtl8xxxu_write_rfreg(priv, RF_B, RF6052_REG_RCK_OS, 0x30000);
> +	rtl8xxxu_write_rfreg(priv, RF_B, RF6052_REG_TXPA_G1, 0x0000f);
> +	rtl8xxxu_write_rfreg(priv, RF_B, RF6052_REG_TXPA_G2, 0xf7ff2);
>  
>  	/* PA/PAD control by 0x56, and set = 0x0 */
>  	rtl8xxxu_write_rfreg(priv, RF_A, RF6052_REG_UNKNOWN_DF, 0x00980);
> -	rtl8xxxu_write_rfreg(priv, RF_A, RF6052_REG_UNKNOWN_56, 0x51000);
> +	rtl8xxxu_write_rfreg(priv, RF_A, RF6052_REG_UNKNOWN_56, 0x510e0);
>  
>  	/* Enter IQK mode */
>  	rtl8xxxu_write32(priv, REG_FPGA0_IQK, 0x80800000);
> @@ -854,14 +870,14 @@ static int rtl8192eu_rx_iqk_path_a(struct rtl8xxxu_priv *priv)
>  	rtl8xxxu_write32(priv, REG_TX_IQK_TONE_B, 0x38008c1c);
>  	rtl8xxxu_write32(priv, REG_RX_IQK_TONE_B, 0x38008c1c);
>  
> -	rtl8xxxu_write32(priv, REG_TX_IQK_PI_A, 0x82160c1f);
> -	rtl8xxxu_write32(priv, REG_RX_IQK_PI_A, 0x28160c1f);
> +	rtl8xxxu_write32(priv, REG_TX_IQK_PI_A, 0x821608ff);
> +	rtl8xxxu_write32(priv, REG_RX_IQK_PI_A, 0x281608ff);
>  
>  	/* LO calibration setting */
>  	rtl8xxxu_write32(priv, REG_IQK_AGC_RSP, 0x0046a891);
>  
>  	/* One shot, path A LOK & IQK */
> -	rtl8xxxu_write32(priv, REG_IQK_AGC_PTS, 0xfa000000);
> +	rtl8xxxu_write32(priv, REG_IQK_AGC_PTS, 0xf9000000);
>  	rtl8xxxu_write32(priv, REG_IQK_AGC_PTS, 0xf8000000);
>  
>  	mdelay(10);
> @@ -891,22 +907,28 @@ static int rtl8192eu_iqk_path_b(struct rtl8xxxu_priv *priv)
>  
>  	rtl8xxxu_write32(priv, REG_FPGA0_IQK, 0x00000000);
>  	rtl8xxxu_write_rfreg(priv, RF_B, RF6052_REG_UNKNOWN_DF, 0x00180);
> -	rtl8xxxu_write32(priv, REG_FPGA0_IQK, 0x80800000);
>  
> -	rtl8xxxu_write32(priv, REG_FPGA0_IQK, 0x00000000);
> +	rtl8xxxu_write_rfreg(priv, RF_B, RF6052_REG_WE_LUT, 0x800a0);
> +	rtl8xxxu_write_rfreg(priv, RF_B, RF6052_REG_RCK_OS, 0x20000);
> +	rtl8xxxu_write_rfreg(priv, RF_B, RF6052_REG_TXPA_G1, 0x0000f);
> +	rtl8xxxu_write_rfreg(priv, RF_B, RF6052_REG_TXPA_G2, 0x07f77);
> +
>  	rtl8xxxu_write32(priv, REG_FPGA0_IQK, 0x80800000);
>  
> +	// rtl8xxxu_write32(priv, REG_FPGA0_IQK, 0x00000000);
> +	// rtl8xxxu_write32(priv, REG_FPGA0_IQK, 0x80800000);
> +
This commented code is not needed.

>  	/* Path B IQK setting */
>  	rtl8xxxu_write32(priv, REG_TX_IQK_TONE_A, 0x38008c1c);
>  	rtl8xxxu_write32(priv, REG_RX_IQK_TONE_A, 0x38008c1c);
>  	rtl8xxxu_write32(priv, REG_TX_IQK_TONE_B, 0x18008c1c);
>  	rtl8xxxu_write32(priv, REG_RX_IQK_TONE_B, 0x38008c1c);
>  
> -	rtl8xxxu_write32(priv, REG_TX_IQK_PI_B, 0x821403e2);
> +	rtl8xxxu_write32(priv, REG_TX_IQK_PI_B, 0x82140303);
>  	rtl8xxxu_write32(priv, REG_RX_IQK_PI_B, 0x68160000);
>  
>  	/* LO calibration setting */
> -	rtl8xxxu_write32(priv, REG_IQK_AGC_RSP, 0x00492911);
> +	rtl8xxxu_write32(priv, REG_IQK_AGC_RSP, 0x00462911);
>  
>  	/* One shot, path A LOK & IQK */
>  	rtl8xxxu_write32(priv, REG_IQK_AGC_PTS, 0xfa000000);
> @@ -942,11 +964,16 @@ static int rtl8192eu_rx_iqk_path_b(struct rtl8xxxu_priv *priv)
>  	rtl8xxxu_write_rfreg(priv, RF_B, RF6052_REG_WE_LUT, 0x800a0);
>  	rtl8xxxu_write_rfreg(priv, RF_B, RF6052_REG_RCK_OS, 0x30000);
>  	rtl8xxxu_write_rfreg(priv, RF_B, RF6052_REG_TXPA_G1, 0x0000f);
> -	rtl8xxxu_write_rfreg(priv, RF_B, RF6052_REG_TXPA_G2, 0xf117b);
> +	rtl8xxxu_write_rfreg(priv, RF_B, RF6052_REG_TXPA_G2, 0xf1173);
> +
> +	rtl8xxxu_write_rfreg(priv, RF_A, RF6052_REG_WE_LUT, 0x800a0);
> +	rtl8xxxu_write_rfreg(priv, RF_A, RF6052_REG_RCK_OS, 0x30000);
> +	rtl8xxxu_write_rfreg(priv, RF_A, RF6052_REG_TXPA_G1, 0x0000f);
> +	rtl8xxxu_write_rfreg(priv, RF_A, RF6052_REG_TXPA_G2, 0xf1173);
>  
>  	/* PA/PAD control by 0x56, and set = 0x0 */
>  	rtl8xxxu_write_rfreg(priv, RF_B, RF6052_REG_UNKNOWN_DF, 0x00980);
> -	rtl8xxxu_write_rfreg(priv, RF_B, RF6052_REG_UNKNOWN_56, 0x51000);
> +	rtl8xxxu_write_rfreg(priv, RF_B, RF6052_REG_UNKNOWN_56, 0x511e0);
>  
>  	/* Enter IQK mode */
>  	rtl8xxxu_write32(priv, REG_FPGA0_IQK, 0x80800000);
> @@ -961,8 +988,8 @@ static int rtl8192eu_rx_iqk_path_b(struct rtl8xxxu_priv *priv)
>  	rtl8xxxu_write32(priv, REG_TX_IQK_TONE_B, 0x18008c1c);
>  	rtl8xxxu_write32(priv, REG_RX_IQK_TONE_B, 0x38008c1c);
>  
> -	rtl8xxxu_write32(priv, REG_TX_IQK_PI_B, 0x82160c1f);
> -	rtl8xxxu_write32(priv, REG_RX_IQK_PI_B, 0x68160c1f);
> +	rtl8xxxu_write32(priv, REG_TX_IQK_PI_B, 0x8216031f);
> +	rtl8xxxu_write32(priv, REG_RX_IQK_PI_B, 0x6816031f);
>  
>  	/* LO calibration setting */
>  	rtl8xxxu_write32(priv, REG_IQK_AGC_RSP, 0x0046a911);
> @@ -1002,11 +1029,16 @@ static int rtl8192eu_rx_iqk_path_b(struct rtl8xxxu_priv *priv)
>  	rtl8xxxu_write_rfreg(priv, RF_B, RF6052_REG_WE_LUT, 0x800a0);
>  	rtl8xxxu_write_rfreg(priv, RF_B, RF6052_REG_RCK_OS, 0x30000);
>  	rtl8xxxu_write_rfreg(priv, RF_B, RF6052_REG_TXPA_G1, 0x0000f);
> -	rtl8xxxu_write_rfreg(priv, RF_B, RF6052_REG_TXPA_G2, 0xf7ffa);
> +	rtl8xxxu_write_rfreg(priv, RF_B, RF6052_REG_TXPA_G2, 0xf7ff2);
> +
> +	rtl8xxxu_write_rfreg(priv, RF_B, RF6052_REG_WE_LUT, 0x800a0);
> +	rtl8xxxu_write_rfreg(priv, RF_B, RF6052_REG_RCK_OS, 0x30000);
> +	rtl8xxxu_write_rfreg(priv, RF_B, RF6052_REG_TXPA_G1, 0x0000f);
> +	rtl8xxxu_write_rfreg(priv, RF_B, RF6052_REG_TXPA_G2, 0xf7ff2);
These four lines you added here should be using RF_A.

>  
>  	/* PA/PAD control by 0x56, and set = 0x0 */
>  	rtl8xxxu_write_rfreg(priv, RF_B, RF6052_REG_UNKNOWN_DF, 0x00980);
> -	rtl8xxxu_write_rfreg(priv, RF_B, RF6052_REG_UNKNOWN_56, 0x51000);
> +	rtl8xxxu_write_rfreg(priv, RF_B, RF6052_REG_UNKNOWN_56, 0x510e0);
>  
>  	/* Enter IQK mode */
>  	rtl8xxxu_write32(priv, REG_FPGA0_IQK, 0x80800000);
> @@ -1020,8 +1052,8 @@ static int rtl8192eu_rx_iqk_path_b(struct rtl8xxxu_priv *priv)
>  	rtl8xxxu_write32(priv, REG_TX_IQK_TONE_B, 0x38008c1c);
>  	rtl8xxxu_write32(priv, REG_RX_IQK_TONE_B, 0x18008c1c);
>  
> -	rtl8xxxu_write32(priv, REG_TX_IQK_PI_A, 0x82160c1f);
> -	rtl8xxxu_write32(priv, REG_RX_IQK_PI_A, 0x28160c1f);
> +	rtl8xxxu_write32(priv, REG_TX_IQK_PI_A, 0x821608ff);
> +	rtl8xxxu_write32(priv, REG_RX_IQK_PI_A, 0x281608ff);
>  
>  	/* LO calibration setting */
>  	rtl8xxxu_write32(priv, REG_IQK_AGC_RSP, 0x0046a891);

The rest of your changes look okay to me.