[PATCH AUTOSEL 6.18] ASoC: Intel: sof_sdw: Add new quirks for PTL on Dell with CS42L43

[Sasha Levin <sashal@kernel.org>]

From: Deep Harsora <Deep_Harsora@dell.com>

[ Upstream commit 12cacdfb023d1b2f6c4e5af471f2d5b6f0cbf909 ]

Add missing quirks for some new Dell laptops using cs42l43's speaker
outputs.

Signed-off-by: Deep Harsora <Deep_Harsora@dell.com>
Signed-off-by: Maciej Strozek <mstrozek@opensource.cirrus.com>
Link: https://patch.msgid.link/20260102152132.3053106-1-mstrozek@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---

LLM Generated explanations, may be completely bogus:

### SUMMARY

**What problem does this commit solve?**
- It enables audio speaker functionality on new Dell laptops (Panther
  Lake platform, SKU 0DD6) using the CS42L43 codec with sidecar
  amplifiers
- Without this quirk, the speakers on these specific Dell laptops won't
  work properly

**Does it meet stable kernel rules?**
1. ✅ Obviously correct - follows exact same pattern as dozens of
   existing entries
2. ✅ Fixes a real bug - missing hardware support (no working speakers)
3. ✅ Important issue - users can't use their laptop speakers without it
4. ✅ Small and contained - 8 lines, single file, static data only
5. ✅ No new features - uses existing quirk infrastructure
6. ✅ Applies cleanly - follows existing patterns

**Risk vs benefit trade-off:**
- **Risk**: Near zero. The quirk only matches specific Dell hardware via
  DMI. Other systems are completely unaffected.
- **Benefit**: High for affected Dell users - working audio vs. broken
  audio

**Concerns:**
- This can only be backported to 6.12.y stable (where
  SOC_SDW_SIDECAR_AMPS exists)
- No dependencies within this commit - it's a self-contained table entry
  addition

**Conclusion:**
This is a textbook example of a hardware quirk addition that should be
backported to stable. It's:
- A trivial, low-risk addition (static data in a quirk table)
- Enables hardware that wouldn't otherwise work
- Falls squarely into the "quirks and workarounds" exception category
- Follows the exact pattern of many other similar entries that have been
  added for Dell/Lenovo/ASUS/Google devices

The fix is small, surgical, and meets all stable kernel criteria for the
quirk exception.

**YES**

 sound/soc/intel/boards/sof_sdw.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/sound/soc/intel/boards/sof_sdw.c b/sound/soc/intel/boards/sof_sdw.c
index c013e31d098e7..92fac7ed782f7 100644
--- a/sound/soc/intel/boards/sof_sdw.c
+++ b/sound/soc/intel/boards/sof_sdw.c
@@ -750,6 +750,14 @@ static const struct dmi_system_id sof_sdw_quirk_table[] = {
 		.driver_data = (void *)(SOC_SDW_CODEC_SPKR),
 	},
 	/* Pantherlake devices*/
+	{
+		.callback = sof_sdw_quirk_cb,
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc"),
+			DMI_EXACT_MATCH(DMI_PRODUCT_SKU, "0DD6")
+		},
+		.driver_data = (void *)(SOC_SDW_SIDECAR_AMPS),
+	},
 	{
 		.callback = sof_sdw_quirk_cb,
 		.matches = {
-- 
2.51.0