linux-kernel - [PATCH v2 5/6] ALSA: hda: cs35l56: Apply amp calibration from EFI data

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Message-ID: <20240223153910.2063698-6-rf@opensource.cirrus.com>
Date: Fri, 23 Feb 2024 15:39:09 +0000
From: Richard Fitzgerald <rf@...nsource.cirrus.com>
To: <broonie@...nel.org>, <tiwai@...e.com>
CC: <linux-sound@...r.kernel.org>, <alsa-devel@...a-project.org>,
        <linux-kernel@...r.kernel.org>, <patches@...nsource.cirrus.com>,
        "Richard
 Fitzgerald" <rf@...nsource.cirrus.com>
Subject: [PATCH v2 5/6] ALSA: hda: cs35l56: Apply amp calibration from EFI data

If there are factory calibration settings in EFI, extract the
settings and write them to the firmware calibration controls.

Signed-off-by: Richard Fitzgerald <rf@...nsource.cirrus.com>
---
 sound/pci/hda/Kconfig       |  2 ++
 sound/pci/hda/cs35l56_hda.c | 39 ++++++++++++++++++++++++++++++-------
 2 files changed, 34 insertions(+), 7 deletions(-)

diff --git a/sound/pci/hda/Kconfig b/sound/pci/hda/Kconfig
index 26da739eea82..f806636242ee 100644
--- a/sound/pci/hda/Kconfig
+++ b/sound/pci/hda/Kconfig
@@ -165,6 +165,7 @@ config SND_HDA_SCODEC_CS35L56_I2C
 	select SND_HDA_SCODEC_CS35L56
 	select SND_HDA_CIRRUS_SCODEC
 	select SND_HDA_CS_DSP_CONTROLS
+	select SND_SOC_CS_AMP_LIB
 	help
 	  Say Y or M here to include CS35L56 amplifier support with
 	  I2C control.
@@ -180,6 +181,7 @@ config SND_HDA_SCODEC_CS35L56_SPI
 	select SND_HDA_SCODEC_CS35L56
 	select SND_HDA_CIRRUS_SCODEC
 	select SND_HDA_CS_DSP_CONTROLS
+	select SND_SOC_CS_AMP_LIB
 	help
 	  Say Y or M here to include CS35L56 amplifier support with
 	  SPI control.
diff --git a/sound/pci/hda/cs35l56_hda.c b/sound/pci/hda/cs35l56_hda.c
index 75a14ba54fcd..5ad76d6914c3 100644
--- a/sound/pci/hda/cs35l56_hda.c
+++ b/sound/pci/hda/cs35l56_hda.c
@@ -14,6 +14,7 @@
 #include <linux/regmap.h>
 #include <linux/slab.h>
 #include <sound/core.h>
+#include <sound/cs-amp-lib.h>
 #include <sound/hda_codec.h>
 #include <sound/tlv.h>
 #include "cirrus_scodec.h"
@@ -547,6 +548,22 @@ static void cs35l56_hda_add_dsp_controls(struct cs35l56_hda *cs35l56)
 	hda_cs_dsp_add_controls(&cs35l56->cs_dsp, &info);
 }
 
+static void cs35l56_hda_apply_calibration(struct cs35l56_hda *cs35l56)
+{
+	int ret;
+
+	if (!cs35l56->base.cal_data_valid || cs35l56->base.secured)
+		return;
+
+	ret = cs_amp_write_cal_coeffs(&cs35l56->cs_dsp,
+				      &cs35l56_calibration_controls,
+				      &cs35l56->base.cal_data);
+	if (ret < 0)
+		dev_warn(cs35l56->base.dev, "Failed to write calibration: %d\n", ret);
+	else
+		dev_info(cs35l56->base.dev, "Calibration applied\n");
+}
+
 static int cs35l56_hda_fw_load(struct cs35l56_hda *cs35l56)
 {
 	const struct firmware *coeff_firmware = NULL;
@@ -618,12 +635,8 @@ static int cs35l56_hda_fw_load(struct cs35l56_hda *cs35l56)
 	if (coeff_filename)
 		dev_dbg(cs35l56->base.dev, "Loaded Coefficients: %s\n", coeff_filename);
 
-	if (!firmware_missing) {
-		ret = cs35l56_mbox_send(&cs35l56->base, CS35L56_MBOX_CMD_AUDIO_REINIT);
-		if (ret)
-			goto err_powered_up;
-	} else if (wmfw_firmware || coeff_firmware) {
-		/* If we downloaded firmware, reset the device and wait for it to boot */
+	/* If we downloaded firmware, reset the device and wait for it to boot */
+	if (firmware_missing && (wmfw_firmware || coeff_firmware)) {
 		cs35l56_system_reset(&cs35l56->base, false);
 		regcache_mark_dirty(cs35l56->base.regmap);
 		ret = cs35l56_wait_for_firmware_boot(&cs35l56->base);
@@ -646,6 +659,11 @@ static int cs35l56_hda_fw_load(struct cs35l56_hda *cs35l56)
 	if (ret)
 		dev_dbg(cs35l56->base.dev, "%s: cs_dsp_run ret %d\n", __func__, ret);
 
+	cs35l56_hda_apply_calibration(cs35l56);
+	ret = cs35l56_mbox_send(&cs35l56->base, CS35L56_MBOX_CMD_AUDIO_REINIT);
+	if (ret)
+		cs_dsp_stop(&cs35l56->cs_dsp);
+
 err_powered_up:
 	if (!cs35l56->base.fw_patched)
 		cs_dsp_power_down(&cs35l56->cs_dsp);
@@ -953,6 +971,8 @@ int cs35l56_hda_common_probe(struct cs35l56_hda *cs35l56, int id)
 		goto err;
 	}
 
+	cs35l56->base.cal_index = cs35l56->index;
+
 	cs35l56_init_cs_dsp(&cs35l56->base, &cs35l56->cs_dsp);
 	cs35l56->cs_dsp.client_ops = &cs35l56_hda_client_ops;
 
@@ -990,6 +1010,10 @@ int cs35l56_hda_common_probe(struct cs35l56_hda *cs35l56, int id)
 	if (ret)
 		goto err;
 
+	ret = cs35l56_get_calibration(&cs35l56->base);
+	if (ret)
+		goto err;
+
 	ret = cs_dsp_halo_init(&cs35l56->cs_dsp);
 	if (ret) {
 		dev_err_probe(cs35l56->base.dev, ret, "cs_dsp_halo_init failed\n");
@@ -1064,10 +1088,11 @@ const struct dev_pm_ops cs35l56_hda_pm_ops = {
 EXPORT_SYMBOL_NS_GPL(cs35l56_hda_pm_ops, SND_HDA_SCODEC_CS35L56);
 
 MODULE_DESCRIPTION("CS35L56 HDA Driver");
+MODULE_IMPORT_NS(FW_CS_DSP);
 MODULE_IMPORT_NS(SND_HDA_CIRRUS_SCODEC);
 MODULE_IMPORT_NS(SND_HDA_CS_DSP_CONTROLS);
 MODULE_IMPORT_NS(SND_SOC_CS35L56_SHARED);
+MODULE_IMPORT_NS(SND_SOC_CS_AMP_LIB);
 MODULE_AUTHOR("Richard Fitzgerald <rf@...nsource.cirrus.com>");
 MODULE_AUTHOR("Simon Trimmer <simont@...nsource.cirrus.com>");
 MODULE_LICENSE("GPL");
-MODULE_IMPORT_NS(FW_CS_DSP);
-- 
2.30.2