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[2403:580a:80ed:0:4835:5a07:49e7:f115]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-aee7de19cdasm1074217a12.24.2025.02.27.04.09.54 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 27 Feb 2025 04:10:02 -0800 (PST) From: James Calligeros Date: Thu, 27 Feb 2025 22:07:36 +1000 Subject: [PATCH v3 09/20] ASoC: tas2764: Configure zeroing of SDOUT slots Precedence: bulk X-Mailing-List: linux-sound@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20250227-apple-codec-changes-v3-9-cbb130030acf@gmail.com> References: <20250227-apple-codec-changes-v3-0-cbb130030acf@gmail.com> In-Reply-To: <20250227-apple-codec-changes-v3-0-cbb130030acf@gmail.com> To: Liam Girdwood , Mark Brown , Jaroslav Kysela , Takashi Iwai , Shenghao Ding , Kevin Lu , Baojun Xu , Dan Murphy , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Shi Fu , Jean Delvare , Guenter Roeck Cc: Alyssa Rosenzweig , =?utf-8?q?Martin_Povi=C5=A1er?= , Hector Martin , linux-sound@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, asahi@lists.linux.dev, linux-hwmon@vger.kernel.org, Neal Gompa , James Calligeros X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=2998; i=jcalligeros99@gmail.com; h=from:subject:message-id; bh=tMEwKfdUcN1GIbtYuD0/lRExutgObIXbnosPkubAYYI=; b=owGbwMvMwCV2xczoYuD3ygTG02pJDOkHQk91JD2dOGkue/LVHa91VHiZt06qVls9aaqbZ73MP //+LZsjO0pZGMS4GGTFFFk2NAl5zDZiu9kvUrkXZg4rE8gQBi5OAZjI9hxGhua/CRt//fpdmu7u N/nek1tPplZciP4VuknN+dqShJW/Aw4w/LOxSu5c9p7jUVWk1azr3Zd/PM+f1ZDL83mD4Z+Uw5m 7pVkB X-Developer-Key: i=jcalligeros99@gmail.com; a=openpgp; fpr=B08212489B3206D98F1479BDD43632D151F77960 From: Martin Povišer The codec has an option to zero out certain TDM slots on its SDOUT output according to a preconfigured mask (otherwise the output is, for the duration of unused slots, in a Hi-Z state). Since the programmed value is dependent on how the chip is implemented on a given board, configure this feature based on a mask read from the specific codec's Devicetree node. Reviewed-by: Neal Gompa Signed-off-by: Martin Povišer Signed-off-by: James Calligeros --- sound/soc/codecs/tas2764.c | 23 +++++++++++++++++++++++ sound/soc/codecs/tas2764.h | 11 +++++++++++ 2 files changed, 34 insertions(+) diff --git a/sound/soc/codecs/tas2764.c b/sound/soc/codecs/tas2764.c index 49b73b74b2d9dd6d09747cabc2b00519c549775d..f33ac89ffc598c39f3a7e0d620724098ca5bc3d3 100644 --- a/sound/soc/codecs/tas2764.c +++ b/sound/soc/codecs/tas2764.c @@ -40,6 +40,7 @@ struct tas2764_priv { int v_sense_slot; int i_sense_slot; + u32 sdout_zero_mask; bool dac_powered; bool unmuted; @@ -601,6 +602,23 @@ static int tas2764_codec_probe(struct snd_soc_component *component) if (ret < 0) return ret; + if (tas2764->sdout_zero_mask) { + for (i = 0; i < 4; i++) { + ret = snd_soc_component_write(component, TAS2764_SDOUT_HIZ_1 + i, + (tas2764->sdout_zero_mask >> (i * 8)) & 0xff); + + if (ret < 0) + return ret; + } + + ret = snd_soc_component_update_bits(component, TAS2764_SDOUT_HIZ_9, + TAS2764_SDOUT_HIZ_9_FORCE_0_EN, + TAS2764_SDOUT_HIZ_9_FORCE_0_EN); + + if (ret < 0) + return ret; + } + switch (tas2764->devid) { case DEVID_SN012776: ret = snd_soc_component_update_bits(component, TAS2764_PWR_CTRL, @@ -749,6 +767,11 @@ static int tas2764_parse_dt(struct device *dev, struct tas2764_priv *tas2764) if (ret) tas2764->v_sense_slot = 2; + ret = fwnode_property_read_u32(dev->fwnode, "ti,sdout-force-zero-mask", + &tas2764->sdout_zero_mask); + if (ret) + tas2764->sdout_zero_mask = 0; + return 0; } diff --git a/sound/soc/codecs/tas2764.h b/sound/soc/codecs/tas2764.h index 3251dc0106e07862dd69efd69fa0e40c3858ecb7..4cf0f7f112d6c3002203fa32e900efd640ef3f22 100644 --- a/sound/soc/codecs/tas2764.h +++ b/sound/soc/codecs/tas2764.h @@ -123,4 +123,15 @@ #define TAS2764_BOP_CFG0 TAS2764_REG(0X0, 0x1d) +#define TAS2764_SDOUT_HIZ_1 TAS2764_REG(0x1, 0x3d) +#define TAS2764_SDOUT_HIZ_2 TAS2764_REG(0x1, 0x3e) +#define TAS2764_SDOUT_HIZ_3 TAS2764_REG(0x1, 0x3f) +#define TAS2764_SDOUT_HIZ_4 TAS2764_REG(0x1, 0x40) +#define TAS2764_SDOUT_HIZ_5 TAS2764_REG(0x1, 0x41) +#define TAS2764_SDOUT_HIZ_6 TAS2764_REG(0x1, 0x42) +#define TAS2764_SDOUT_HIZ_7 TAS2764_REG(0x1, 0x43) +#define TAS2764_SDOUT_HIZ_8 TAS2764_REG(0x1, 0x44) +#define TAS2764_SDOUT_HIZ_9 TAS2764_REG(0x1, 0x45) +#define TAS2764_SDOUT_HIZ_9_FORCE_0_EN BIT(7) + #endif /* __TAS2764__ */