Thanks for your comment, I will prepare a new patch soon.

-----Original Message----- From: Gergo Koteles soyer@irl.hu Sent: Saturday, September 6, 2025 8:13 PM To: Ding, Shenghao shenghao-ding@ti.com; tiwai@suse.de Cc: broonie@kernel.org; andriy.shevchenko@linux.intel.com; 13564923607@139.com; 13916275206@139.com; alsa-devel@alsa- project.org; linux-kernel@vger.kernel.org; Xu, Baojun baojun.xu@ti.com; Baojun.Xu@fpt.com Subject: [EXTERNAL] Re: [PATCH v3] ALSA: hda/tas2781: Fix the order of TAS2781 calibrated-data

Hi Shenghao, On Sat, 2025-09-06 at 17: 19 +0800, Shenghao Ding wrote: > A bug reported by one of my customers that the order of TAS2781 > calibrated-data is incorrect, the correct way is to move R0_Low > and insert it between R0 and ZjQcmQRYFpfptBannerStart This message was sent from outside of Texas Instruments. Do not click links or open attachments unless you recognize the source of this email and know the content is safe. https://us-phishalarm- ewt.proofpoint.com/EWT/v1/G3vK!uldgPTePPA3xaizufNmp9kStdEQS36lcAc9Q wr41j6O4ieidIV-4ba5O3e2zdceeW_86IkqVuODKMJ11ZYqjt- Y4PnTTtX6uNRJ38dLuTVI$ Report Suspicious

ZjQcmQRYFpfptBannerEnd Hi Shenghao,

On Sat, 2025-09-06 at 17:19 +0800, Shenghao Ding wrote:

...

A bug reported by one of my customers that the order of TAS2781 calibrated-data is incorrect, the correct way is to move R0_Low and insert it between R0 and InvR0.

Fixes: 4fe238513407 ("ALSA: hda/tas2781: Move and unified the calibrated-data getting function for SPI and I2C into the tas2781_hda lib") Signed-off-by: Shenghao Ding shenghao-ding@ti.com

---

v3:

• Take Tiwai's advice on cali_cnv() to make it more simpler.

v2:

• Submit to the sound branch maintained by Tiwai instead of linux-next

branch

• Drop other fix

---

sound/hda/codecs/side-codecs/tas2781_hda.c | 25 +++++++++++++++++----- 1 file changed, 20 insertions(+), 5 deletions(-)

diff --git a/sound/hda/codecs/side-codecs/tas2781_hda.c b/sound/hda/codecs/side-codecs/tas2781_hda.c index f46d2e06c64f..f4a44c6b0234 100644 --- a/sound/hda/codecs/side-codecs/tas2781_hda.c +++ b/sound/hda/codecs/side-codecs/tas2781_hda.c @@ -33,6 +33,23 @@ const efi_guid_t tasdev_fct_efi_guid[] = { }; EXPORT_SYMBOL_NS_GPL(tasdev_fct_efi_guid,

"SND_HDA_SCODEC_TAS2781");

...

+/*

• • The order of calibrated-data writing function is a bit different

+from the

• • order in UEFI. Here is the conversion to match the order of

+calibrated-data

• • writing function.
• */

+static void cali_cnv(unsigned char *data, unsigned int base, int +offset)

unused base?

...

+{

• struct cali_reg reg_data;
• memcpy(&reg_data, data, sizeof(reg_data));

data points to cali_data?

it should add base memcpy(&reg_data, &data[base], sizeof(reg_data));

...

• /* the data order has to be swapped between r0_low_reg and inv0_reg

*/

...

• swap(reg_data.r0_low_reg, reg_data.invr0_reg);
• cpu_to_be32_array((__force __be32 *)(data + offset + 1),

• (u32 *)&reg_data, TASDEV_CALIB_N);
  

+}

static void tas2781_apply_calib(struct tasdevice_priv *p) { struct calidata *cali_data = &p->cali_data; @@ -103,8 +120,7 @@ static void tas2781_apply_calib(struct tasdevice_priv *p)

		data[l] = k;
		oft++;

• 		for (i = 0; i < TASDEV_CALIB_N * 4; i++)
  

• 			data[l + i + 1] = data[4 * oft + i];
  

• 		cali_cnv(data, 4 * oft, l);
  	k++;
  }
  

  }

@@ -130,9 +146,8 @@ static void tas2781_apply_calib(struct tasdevice_priv *p)

for (j = p->ndev - 1; j >= 0; j--) {
	l = j * (cali_data->cali_dat_sz_per_dev + 1);

• 	for (i = TASDEV_CALIB_N * 4; i > 0 ; i--)
  

• 		data[l + i] = data[p->index * 5 + i];
  

• 	data[l+i] = j;
  

• 	cali_cnv(data, cali_data->cali_dat_sz_per_dev * j, l);
  

• 	data[l] = j;
  

  } }

Gergo