Gaggery Tsai
35ed17f238
Alternative kernel package based on Arch Linux 6.19.9 with 12 upstream SDCA backport patches that enable audio on Intel Panther Lake systems (Dell XPS 2026 and similar hardware with CS35L57 SoundWire amps). The stock 6.19.9 kernel lacks the SDCA class/function topology driver code needed for PTL audio. These patches backport the SDCA support from mainline v7.0 to the stable 6.19.x series. Tested on Dell XPS 16 (Panther Lake): all 4 CS35L57 amps probe with calibration, SDCA jack detection works, sof-soundwire sound card registers successfully. CONFIG_RUST is disabled to avoid build failures with newer Rust toolchain versions. Rust is not required for audio functionality.
121 lines
3.9 KiB
Diff
121 lines
3.9 KiB
Diff
From 4b55c8cdab4fbbf35fdb22e711a473c7c19b8c39 Mon Sep 17 00:00:00 2001
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From: Charles Keepax <ckeepax@opensource.cirrus.com>
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Date: Fri, 9 Jan 2026 14:52:03 +0000
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Subject: [PATCH 04/17] ASoC: SDCA: Add SDCA IRQ enable/disable helpers
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Add helpers to enable and disable the SDCA IRQs by Function. These are
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useful to sequence the powering down and up around system suspend.
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Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
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Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.dev>
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Link: https://patch.msgid.link/20260109145206.3456151-2-ckeepax@opensource.cirrus.com
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Signed-off-by: Mark Brown <broonie@kernel.org>
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---
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include/sound/sdca_interrupts.h | 7 +++
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sound/soc/sdca/sdca_interrupts.c | 76 ++++++++++++++++++++++++++++++++
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2 files changed, 83 insertions(+)
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diff --git a/include/sound/sdca_interrupts.h b/include/sound/sdca_interrupts.h
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index 8f13417d129a..9bcb5d8fd592 100644
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--- a/include/sound/sdca_interrupts.h
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+++ b/include/sound/sdca_interrupts.h
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@@ -84,4 +84,11 @@ int sdca_irq_populate(struct sdca_function_data *function,
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struct sdca_interrupt_info *sdca_irq_allocate(struct device *dev,
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struct regmap *regmap, int irq);
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+void sdca_irq_enable_early(struct sdca_function_data *function,
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+ struct sdca_interrupt_info *info);
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+void sdca_irq_enable(struct sdca_function_data *function,
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+ struct sdca_interrupt_info *info);
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+void sdca_irq_disable(struct sdca_function_data *function,
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+ struct sdca_interrupt_info *info);
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+
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#endif
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diff --git a/sound/soc/sdca/sdca_interrupts.c b/sound/soc/sdca/sdca_interrupts.c
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index ff3a7e405fdc..afef7bbf613c 100644
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--- a/sound/soc/sdca/sdca_interrupts.c
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+++ b/sound/soc/sdca/sdca_interrupts.c
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@@ -541,3 +541,79 @@ struct sdca_interrupt_info *sdca_irq_allocate(struct device *sdev,
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return info;
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}
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EXPORT_SYMBOL_NS_GPL(sdca_irq_allocate, "SND_SOC_SDCA");
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+
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+static void irq_enable_flags(struct sdca_function_data *function,
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+ struct sdca_interrupt_info *info, bool early)
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+{
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+ struct sdca_interrupt *interrupt;
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+ int i;
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+
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+ for (i = 0; i < SDCA_MAX_INTERRUPTS; i++) {
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+ interrupt = &info->irqs[i];
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+
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+ if (!interrupt || interrupt->function != function)
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+ continue;
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+
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+ switch (SDCA_CTL_TYPE(interrupt->entity->type,
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+ interrupt->control->sel)) {
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+ case SDCA_CTL_TYPE_S(XU, FDL_CURRENTOWNER):
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+ if (early)
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+ enable_irq(interrupt->irq);
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+ break;
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+ default:
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+ if (!early)
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+ enable_irq(interrupt->irq);
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+ break;
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+ }
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+ }
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+}
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+
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+/**
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+ * sdca_irq_enable_early - Re-enable early SDCA IRQs for a given function
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+ * @function: Pointer to the SDCA Function.
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+ * @info: Pointer to the SDCA interrupt info for this device.
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+ *
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+ * The early version of the IRQ enable allows enabling IRQs which may be
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+ * necessary to bootstrap functionality for other IRQs, such as the FDL
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+ * process.
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+ */
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+void sdca_irq_enable_early(struct sdca_function_data *function,
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+ struct sdca_interrupt_info *info)
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+{
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+ irq_enable_flags(function, info, true);
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+}
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+EXPORT_SYMBOL_NS_GPL(sdca_irq_enable_early, "SND_SOC_SDCA");
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+
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+/**
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+ * sdca_irq_enable - Re-enable SDCA IRQs for a given function
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+ * @function: Pointer to the SDCA Function.
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+ * @info: Pointer to the SDCA interrupt info for this device.
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+ */
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+void sdca_irq_enable(struct sdca_function_data *function,
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+ struct sdca_interrupt_info *info)
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+{
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+ irq_enable_flags(function, info, false);
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+}
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+EXPORT_SYMBOL_NS_GPL(sdca_irq_enable, "SND_SOC_SDCA");
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+
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+/**
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+ * sdca_irq_disable - Disable SDCA IRQs for a given function
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+ * @function: Pointer to the SDCA Function.
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+ * @info: Pointer to the SDCA interrupt info for this device.
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+ */
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+void sdca_irq_disable(struct sdca_function_data *function,
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+ struct sdca_interrupt_info *info)
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+{
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+ struct sdca_interrupt *interrupt;
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+ int i;
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+
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+ for (i = 0; i < SDCA_MAX_INTERRUPTS; i++) {
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+ interrupt = &info->irqs[i];
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+
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+ if (!interrupt || interrupt->function != function)
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+ continue;
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+
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+ disable_irq(interrupt->irq);
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+ }
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+}
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+EXPORT_SYMBOL_NS_GPL(sdca_irq_disable, "SND_SOC_SDCA");
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--
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2.43.0
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