linux-kernel - [PATCH 1/3] ASoC: cs35l56: Add support for CS35L54 and CS35L57

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Message-ID: <20240308135900.603192-2-rf@opensource.cirrus.com>
Date: Fri, 8 Mar 2024 13:58:58 +0000
From: Richard Fitzgerald <rf@...nsource.cirrus.com>
To: <broonie@...nel.org>, <tiwai@...e.com>, <hdegoede@...hat.com>,
        <lenb@...nel.org>, <rafael@...nel.org>
CC: <linux-sound@...r.kernel.org>, <alsa-devel@...a-project.org>,
        <linux-kernel@...r.kernel.org>, <patches@...nsource.cirrus.com>,
        <platform-driver-x86@...r.kernel.org>, <linux-acpi@...r.kernel.org>,
        "Simon
 Trimmer" <simont@...nsource.cirrus.com>,
        Richard Fitzgerald
	<rf@...nsource.cirrus.com>
Subject: [PATCH 1/3] ASoC: cs35l56: Add support for CS35L54 and CS35L57

From: Simon Trimmer <simont@...nsource.cirrus.com>

The CS35L54 and CS35L57 are Boosted Smart Amplifiers. The CS35L54 has
I2C/SPI control and I2S/TDM audio. The CS35L57 also has SoundWire
control and audio.

The hardware differences between L54, L56 and L57 do not affect the
driver control interface so they can all be handled by the same driver.

Signed-off-by: Simon Trimmer <simont@...nsource.cirrus.com>
Signed-off-by: Richard Fitzgerald <rf@...nsource.cirrus.com>
---
 include/sound/cs35l56.h           |  1 +
 sound/soc/codecs/cs35l56-sdw.c    |  3 ++-
 sound/soc/codecs/cs35l56-shared.c |  8 ++++++--
 sound/soc/codecs/cs35l56.c        | 14 +++++++++++++-
 4 files changed, 22 insertions(+), 4 deletions(-)

diff --git a/include/sound/cs35l56.h b/include/sound/cs35l56.h
index 4014ed7097b3..e0629699b563 100644
--- a/include/sound/cs35l56.h
+++ b/include/sound/cs35l56.h
@@ -261,6 +261,7 @@ struct cs35l56_base {
 	struct regmap *regmap;
 	int irq;
 	struct mutex irq_lock;
+	u8 type;
 	u8 rev;
 	bool init_done;
 	bool fw_patched;
diff --git a/sound/soc/codecs/cs35l56-sdw.c b/sound/soc/codecs/cs35l56-sdw.c
index eaa4c706f3a2..14a5f86019aa 100644
--- a/sound/soc/codecs/cs35l56-sdw.c
+++ b/sound/soc/codecs/cs35l56-sdw.c
@@ -386,7 +386,7 @@ static int cs35l56_sdw_bus_config(struct sdw_slave *peripheral,
 	dev_dbg(cs35l56->base.dev, "%s: sclk=%u c=%u r=%u\n",
 		__func__, sclk, params->col, params->row);
 
-	if (cs35l56->base.rev < 0xb0)
+	if ((cs35l56->base.type == 0x56) && (cs35l56->base.rev < 0xb0))
 		return cs35l56_a1_kick_divider(cs35l56, peripheral);
 
 	return 0;
@@ -563,6 +563,7 @@ static const struct dev_pm_ops cs35l56_sdw_pm = {
 
 static const struct sdw_device_id cs35l56_sdw_id[] = {
 	SDW_SLAVE_ENTRY(0x01FA, 0x3556, 0),
+	SDW_SLAVE_ENTRY(0x01FA, 0x3557, 0),
 	{},
 };
 MODULE_DEVICE_TABLE(sdw, cs35l56_sdw_id);
diff --git a/sound/soc/codecs/cs35l56-shared.c b/sound/soc/codecs/cs35l56-shared.c
index f3670bf85a95..08cac58e3ab2 100644
--- a/sound/soc/codecs/cs35l56-shared.c
+++ b/sound/soc/codecs/cs35l56-shared.c
@@ -776,13 +776,17 @@ int cs35l56_hw_init(struct cs35l56_base *cs35l56_base)
 	devid &= CS35L56_DEVID_MASK;
 
 	switch (devid) {
+	case 0x35A54:
 	case 0x35A56:
+	case 0x35A57:
 		break;
 	default:
 		dev_err(cs35l56_base->dev, "Unknown device %x\n", devid);
 		return ret;
 	}
 
+	cs35l56_base->type = devid & 0xFF;
+
 	ret = regmap_read(cs35l56_base->regmap, CS35L56_DSP_RESTRICT_STS1, &secured);
 	if (ret) {
 		dev_err(cs35l56_base->dev, "Get Secure status failed\n");
@@ -803,8 +807,8 @@ int cs35l56_hw_init(struct cs35l56_base *cs35l56_base)
 	if (ret)
 		return ret;
 
-	dev_info(cs35l56_base->dev, "Cirrus Logic CS35L56%s Rev %02X OTP%d fw:%d.%d.%d (patched=%u)\n",
-		 cs35l56_base->secured ? "s" : "", cs35l56_base->rev, otpid,
+	dev_info(cs35l56_base->dev, "Cirrus Logic CS35L%02X%s Rev %02X OTP%d fw:%d.%d.%d (patched=%u)\n",
+		 cs35l56_base->type, cs35l56_base->secured ? "s" : "", cs35l56_base->rev, otpid,
 		 fw_ver >> 16, (fw_ver >> 8) & 0xff, fw_ver & 0xff, !fw_missing);
 
 	/* Wake source and *_BLOCKED interrupts default to unmasked, so mask them */
diff --git a/sound/soc/codecs/cs35l56.c b/sound/soc/codecs/cs35l56.c
index 8a0ca0812772..8d2f021fb362 100644
--- a/sound/soc/codecs/cs35l56.c
+++ b/sound/soc/codecs/cs35l56.c
@@ -1004,6 +1004,10 @@ static int cs35l56_component_probe(struct snd_soc_component *component)
 		return -ENODEV;
 	}
 
+	cs35l56->dsp.part = kasprintf(GFP_KERNEL, "cs35l%02x", cs35l56->base.type);
+	if (!cs35l56->dsp.part)
+		return -ENOMEM;
+
 	cs35l56->component = component;
 	wm_adsp2_component_probe(&cs35l56->dsp, component);
 
@@ -1034,6 +1038,9 @@ static void cs35l56_component_remove(struct snd_soc_component *component)
 
 	wm_adsp2_component_remove(&cs35l56->dsp, component);
 
+	kfree(cs35l56->dsp.part);
+	cs35l56->dsp.part = NULL;
+
 	kfree(cs35l56->dsp.fwf_name);
 	cs35l56->dsp.fwf_name = NULL;
 
@@ -1253,7 +1260,12 @@ static int cs35l56_dsp_init(struct cs35l56_private *cs35l56)
 
 	dsp = &cs35l56->dsp;
 	cs35l56_init_cs_dsp(&cs35l56->base, &dsp->cs_dsp);
-	dsp->part = "cs35l56";
+
+	/*
+	 * dsp->part is filled in later as it is based on the DEVID. In a
+	 * SoundWire system that cannot be read until enumeration has occurred
+	 * and the device has attached.
+	 */
 	dsp->fw = 12;
 	dsp->wmfw_optional = true;
 
-- 
2.30.2