[PATCH AUTOSEL 6.1 1/9] HID: pidff: Convert infinite length from Linux API to PID standard

[PATCH AUTOSEL 6.1 1/9] HID: pidff: Convert infinite length from Linux API to PID standard

[Sasha Levin]

From: Tomasz Pakuła <tomasz.pakula.oficjalny@gmail.com>

[ Upstream commit 37e0591fe44dce39d1ebc7a82d5b6e4dba1582eb ]

Software uses 0 as de-facto infinite lenght on Linux FF apis (SDL),
Linux doesn't actually define anythi as of now, while USB PID defines
NULL (0xffff). Most PID devices do not expect a 0-length effect and
can't interpret it as infinite. This change fixes Force Feedback for
most PID compliant devices.

As most games depend on updating the values of already playing infinite
effects, this is crucial to ensure they will actually work.

Previously, users had to rely on third-party software to do this conversion
and make their PID devices usable.

Co-developed-by: Makarenko Oleg <oleg@makarenk.ooo>
Signed-off-by: Makarenko Oleg <oleg@makarenk.ooo>
Signed-off-by: Tomasz Pakuła <tomasz.pakula.oficjalny@gmail.com>
Reviewed-by: Michał Kopeć <michal@nozomi.space>
Reviewed-by: Paul Dino Jones <paul@spacefreak18.xyz>
Tested-by: Paul Dino Jones <paul@spacefreak18.xyz>
Tested-by: Cristóferson Bueno <cbueno81@gmail.com>
Tested-by: Pablo Cisneros <patchkez@protonmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/hid/usbhid/hid-pidff.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/hid/usbhid/hid-pidff.c b/drivers/hid/usbhid/hid-pidff.c
index 3b4ee21cd8111..5fe4422bb5bad 100644
--- a/drivers/hid/usbhid/hid-pidff.c
+++ b/drivers/hid/usbhid/hid-pidff.c
@@ -21,6 +21,7 @@
 #include "usbhid.h"
 
 #define	PID_EFFECTS_MAX		64
+#define	PID_INFINITE		0xffff
 
 /* Report usage table used to put reports into an array */
 
@@ -301,7 +302,12 @@ static void pidff_set_effect_report(struct pidff_device *pidff,
 		pidff->block_load[PID_EFFECT_BLOCK_INDEX].value[0];
 	pidff->set_effect_type->value[0] =
 		pidff->create_new_effect_type->value[0];
-	pidff->set_effect[PID_DURATION].value[0] = effect->replay.length;
+
+	/* Convert infinite length from Linux API (0)
+	   to PID standard (NULL) if needed */
+	pidff->set_effect[PID_DURATION].value[0] =
+		effect->replay.length == 0 ? PID_INFINITE : effect->replay.length;
+
 	pidff->set_effect[PID_TRIGGER_BUTTON].value[0] = effect->trigger.button;
 	pidff->set_effect[PID_TRIGGER_REPEAT_INT].value[0] =
 		effect->trigger.interval;
-- 
2.39.5

[PATCH AUTOSEL 6.1 2/9] HID: pidff: Do not send effect envelope if it's empty

[Sasha Levin]

From: Tomasz Pakuła <tomasz.pakula.oficjalny@gmail.com>

[ Upstream commit 8876fc1884f5b39550c8387ff3176396c988541d ]

Envelope struct is always initialized, but the envelope itself is
optional as described in USB PID Device class definition 1.0.

5.1.1.1 Type Specific Block Offsets
...
4) Effects that do not use Condition Blocks use 1 Parameter Block and
an *optional* Envelope Block.

Sending out "empty" envelope breaks force feedback on some devices with
games that use SINE effect + offset to emulate constant force effect, as
well as generally breaking Constant/Periodic effects. One of the affected
brands is Moza Racing.

This change prevents the envelope from being sent if it contains all
0 values while keeping the old behavior of only sending it, if it differs
from the old one.

Changes in v6:
- Simplify the checks to make them clearer
- Fix possible null pointer dereference while calling
  pidff_needs_set_envelope

Signed-off-by: Tomasz Pakuła <tomasz.pakula.oficjalny@gmail.com>
Reviewed-by: Michał Kopeć <michal@nozomi.space>
Reviewed-by: Paul Dino Jones <paul@spacefreak18.xyz>
Tested-by: Paul Dino Jones <paul@spacefreak18.xyz>
Tested-by: Cristóferson Bueno <cbueno81@gmail.com>
Tested-by: Pablo Cisneros <patchkez@protonmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/hid/usbhid/hid-pidff.c | 42 +++++++++++++++++++---------------
 1 file changed, 24 insertions(+), 18 deletions(-)

diff --git a/drivers/hid/usbhid/hid-pidff.c b/drivers/hid/usbhid/hid-pidff.c
index 5fe4422bb5bad..a01c1b2ab2f4c 100644
--- a/drivers/hid/usbhid/hid-pidff.c
+++ b/drivers/hid/usbhid/hid-pidff.c
@@ -262,10 +262,22 @@ static void pidff_set_envelope_report(struct pidff_device *pidff,
 static int pidff_needs_set_envelope(struct ff_envelope *envelope,
 				    struct ff_envelope *old)
 {
-	return envelope->attack_level != old->attack_level ||
-	       envelope->fade_level != old->fade_level ||
+	bool needs_new_envelope;
+	needs_new_envelope = envelope->attack_level  != 0 ||
+			     envelope->fade_level    != 0 ||
+			     envelope->attack_length != 0 ||
+			     envelope->fade_length   != 0;
+
+	if (!needs_new_envelope)
+		return false;
+
+	if (!old)
+		return needs_new_envelope;
+
+	return envelope->attack_level  != old->attack_level  ||
+	       envelope->fade_level    != old->fade_level    ||
 	       envelope->attack_length != old->attack_length ||
-	       envelope->fade_length != old->fade_length;
+	       envelope->fade_length   != old->fade_length;
 }
 
 /*
@@ -580,11 +592,9 @@ static int pidff_upload_effect(struct input_dev *dev, struct ff_effect *effect,
 			pidff_set_effect_report(pidff, effect);
 		if (!old || pidff_needs_set_constant(effect, old))
 			pidff_set_constant_force_report(pidff, effect);
-		if (!old ||
-		    pidff_needs_set_envelope(&effect->u.constant.envelope,
-					&old->u.constant.envelope))
-			pidff_set_envelope_report(pidff,
-					&effect->u.constant.envelope);
+		if (pidff_needs_set_envelope(&effect->u.constant.envelope,
+					old ? &old->u.constant.envelope : NULL))
+			pidff_set_envelope_report(pidff, &effect->u.constant.envelope);
 		break;
 
 	case FF_PERIODIC:
@@ -619,11 +629,9 @@ static int pidff_upload_effect(struct input_dev *dev, struct ff_effect *effect,
 			pidff_set_effect_report(pidff, effect);
 		if (!old || pidff_needs_set_periodic(effect, old))
 			pidff_set_periodic_report(pidff, effect);
-		if (!old ||
-		    pidff_needs_set_envelope(&effect->u.periodic.envelope,
-					&old->u.periodic.envelope))
-			pidff_set_envelope_report(pidff,
-					&effect->u.periodic.envelope);
+		if (pidff_needs_set_envelope(&effect->u.periodic.envelope,
+					old ? &old->u.periodic.envelope : NULL))
+			pidff_set_envelope_report(pidff, &effect->u.periodic.envelope);
 		break;
 
 	case FF_RAMP:
@@ -637,11 +645,9 @@ static int pidff_upload_effect(struct input_dev *dev, struct ff_effect *effect,
 			pidff_set_effect_report(pidff, effect);
 		if (!old || pidff_needs_set_ramp(effect, old))
 			pidff_set_ramp_force_report(pidff, effect);
-		if (!old ||
-		    pidff_needs_set_envelope(&effect->u.ramp.envelope,
-					&old->u.ramp.envelope))
-			pidff_set_envelope_report(pidff,
-					&effect->u.ramp.envelope);
+		if (pidff_needs_set_envelope(&effect->u.ramp.envelope,
+					old ? &old->u.ramp.envelope : NULL))
+			pidff_set_envelope_report(pidff, &effect->u.ramp.envelope);
 		break;
 
 	case FF_SPRING:
-- 
2.39.5

[PATCH AUTOSEL 6.1 3/9] HID: pidff: Fix null pointer dereference in pidff_find_fields

[Sasha Levin]

From: Tomasz Pakuła <forest10pl@gmail.com>

[ Upstream commit 22a05462c3d0eee15154faf8d13c49e6295270a5 ]

This function triggered a null pointer dereference if used to search for
a report that isn't implemented on the device. This happened both for
optional and required reports alike.

The same logic was applied to pidff_find_special_field and although
pidff_init_fields should return an error earlier if one of the required
reports is missing, future modifications could change this logic and
resurface this possible null pointer dereference again.

LKML bug report:
https://lore.kernel.org/all/CAL-gK7f5=R0nrrQdPtaZZr1fd-cdAMbDMuZ_NLA8vM0SX+nGSw@mail.gmail.com

Reported-by: Nolan Nicholson <nolananicholson@gmail.com>
Signed-off-by: Tomasz Pakuła <tomasz.pakula.oficjalny@gmail.com>
Reviewed-by: Michał Kopeć <michal@nozomi.space>
Reviewed-by: Paul Dino Jones <paul@spacefreak18.xyz>
Tested-by: Paul Dino Jones <paul@spacefreak18.xyz>
Tested-by: Cristóferson Bueno <cbueno81@gmail.com>
Tested-by: Pablo Cisneros <patchkez@protonmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/hid/usbhid/hid-pidff.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/drivers/hid/usbhid/hid-pidff.c b/drivers/hid/usbhid/hid-pidff.c
index a01c1b2ab2f4c..26cb331b646ca 100644
--- a/drivers/hid/usbhid/hid-pidff.c
+++ b/drivers/hid/usbhid/hid-pidff.c
@@ -770,6 +770,11 @@ static void pidff_set_autocenter(struct input_dev *dev, u16 magnitude)
 static int pidff_find_fields(struct pidff_usage *usage, const u8 *table,
 			     struct hid_report *report, int count, int strict)
 {
+	if (!report) {
+		pr_debug("pidff_find_fields, null report\n");
+		return -1;
+	}
+
 	int i, j, k, found;
 
 	for (k = 0; k < count; k++) {
@@ -883,6 +888,11 @@ static int pidff_reports_ok(struct pidff_device *pidff)
 static struct hid_field *pidff_find_special_field(struct hid_report *report,
 						  int usage, int enforce_min)
 {
+	if (!report) {
+		pr_debug("pidff_find_special_field, null report\n");
+		return NULL;
+	}
+
 	int i;
 
 	for (i = 0; i < report->maxfield; i++) {
-- 
2.39.5

[PATCH AUTOSEL 6.1 4/9] ALSA: hda: intel: Fix Optimus when GPU has no sound

[Sasha Levin]

From: Maxim Mikityanskiy <maxtram95@gmail.com>

[ Upstream commit 2b360ba9a4936486380bc30d1eabceb40a714d98 ]

quirk_nvidia_hda() forcefully enables HDA controller on all NVIDIA GPUs,
because some buggy BIOSes leave it disabled. However, some dual-GPU
laptops do not have a functional HDA controller in DGPU, and BIOS
disables it on purpose. After quirk_nvidia_hda() reenables this dummy
HDA controller, attempting to probe it fails at azx_first_init(), which
is too late to cancel the probe, as it happens in azx_probe_continue().

The sna_hda_intel driver calls azx_free() and stops the chip, however,
it stays probed, and from the runtime PM point of view, the device
remains active (it was set as active by the PCI subsystem on probe). It
prevents vga_switcheroo from turning off the DGPU, because
pci_create_device_link() syncs power management for video and audio
devices.

Affected devices should be added to driver_denylist to prevent them from
probing early. This patch helps identify such devices by printing a
warning, and also forces the device to the suspended state to allow
vga_switcheroo turn off DGPU.

Signed-off-by: Maxim Mikityanskiy <maxtram95@gmail.com>
Link: https://patch.msgid.link/20250208214602.39607-2-maxtram95@gmail.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 sound/pci/hda/hda_intel.c | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
index 56ee7708f6c49..7d0b12aab886f 100644
--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -1366,8 +1366,21 @@ static void azx_free(struct azx *chip)
 	if (use_vga_switcheroo(hda)) {
 		if (chip->disabled && hda->probe_continued)
 			snd_hda_unlock_devices(&chip->bus);
-		if (hda->vga_switcheroo_registered)
+		if (hda->vga_switcheroo_registered) {
 			vga_switcheroo_unregister_client(chip->pci);
+
+			/* Some GPUs don't have sound, and azx_first_init fails,
+			 * leaving the device probed but non-functional. As long
+			 * as it's probed, the PCI subsystem keeps its runtime
+			 * PM status as active. Force it to suspended (as we
+			 * actually stop the chip) to allow GPU to suspend via
+			 * vga_switcheroo, and print a warning.
+			 */
+			dev_warn(&pci->dev, "GPU sound probed, but not operational: please add a quirk to driver_denylist\n");
+			pm_runtime_disable(&pci->dev);
+			pm_runtime_set_suspended(&pci->dev);
+			pm_runtime_enable(&pci->dev);
+		}
 	}
 
 	if (bus->chip_init) {
-- 
2.39.5

[PATCH AUTOSEL 6.1 5/9] ALSA: hda: intel: Add Lenovo IdeaPad Z570 to probe denylist

[Sasha Levin]

From: Maxim Mikityanskiy <maxtram95@gmail.com>

[ Upstream commit becc794c5e46f4dfca59f2385f78d83fc9e84700 ]

Lenovo IdeaPad Z570 with NVIDIA GeForce Ge 540M doesn't have sound on
the discrete GPU. The HDA controller in DGPU is disabled by BIOS, but
then reenabled by quirk_nvidia_hda(). The probe fails and ends up with
the "GPU sound probed, but not operational" error.

Add this laptop to DMI-based denylist to prevent probe early. DMI is
used, because the audio device has zero subsystem IDs, and this entry
would be too much, blocking all 540M chips:
    PCI_DEVICE_SUB(0x10de, 0x0bea, 0x0000, 0x0000)
Also, this laptop comes in a variety of modifications with different
NVIDIA GPUs, so the DMI check will cover them all.

Signed-off-by: Maxim Mikityanskiy <maxtram95@gmail.com>
Link: https://patch.msgid.link/20250208214602.39607-3-maxtram95@gmail.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 sound/pci/hda/hda_intel.c | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
index 7d0b12aab886f..5eeea9a4d201f 100644
--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -37,6 +37,7 @@
 #include <linux/completion.h>
 #include <linux/acpi.h>
 #include <linux/pgtable.h>
+#include <linux/dmi.h>
 
 #ifdef CONFIG_X86
 /* for snoop control */
@@ -2087,6 +2088,27 @@ static const struct pci_device_id driver_denylist[] = {
 	{}
 };
 
+static struct pci_device_id driver_denylist_ideapad_z570[] = {
+	{ PCI_DEVICE_SUB(0x10de, 0x0bea, 0x0000, 0x0000) }, /* NVIDIA GF108 HDA */
+	{}
+};
+
+/* DMI-based denylist, to be used when:
+ *  - PCI subsystem IDs are zero, impossible to distinguish from valid sound cards.
+ *  - Different modifications of the same laptop use different GPU models.
+ */
+static const struct dmi_system_id driver_denylist_dmi[] = {
+	{
+		/* No HDA in NVIDIA DGPU. BIOS disables it, but quirk_nvidia_hda() reenables. */
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+			DMI_MATCH(DMI_PRODUCT_VERSION, "Ideapad Z570"),
+		},
+		.driver_data = &driver_denylist_ideapad_z570,
+	},
+	{}
+};
+
 static const struct hda_controller_ops pci_hda_ops = {
 	.disable_msi_reset_irq = disable_msi_reset_irq,
 	.position_check = azx_position_check,
@@ -2097,6 +2119,7 @@ static DECLARE_BITMAP(probed_devs, SNDRV_CARDS);
 static int azx_probe(struct pci_dev *pci,
 		     const struct pci_device_id *pci_id)
 {
+	const struct dmi_system_id *dmi;
 	struct snd_card *card;
 	struct hda_intel *hda;
 	struct azx *chip;
@@ -2109,6 +2132,12 @@ static int azx_probe(struct pci_dev *pci,
 		return -ENODEV;
 	}
 
+	dmi = dmi_first_match(driver_denylist_dmi);
+	if (dmi && pci_match_id(dmi->driver_data, pci)) {
+		dev_info(&pci->dev, "Skipping the device on the DMI denylist\n");
+		return -ENODEV;
+	}
+
 	dev = find_first_zero_bit(probed_devs, SNDRV_CARDS);
 	if (dev >= SNDRV_CARDS)
 		return -ENODEV;
-- 
2.39.5

[PATCH AUTOSEL 6.1 6/9] ASoC: fsl_audmix: register card device depends on 'dais' property

[Sasha Levin]

From: Shengjiu Wang <shengjiu.wang@nxp.com>

[ Upstream commit 294a60e5e9830045c161181286d44ce669f88833 ]

In order to make the audmix device linked by audio graph card, make
'dais' property to be optional.

If 'dais' property exists, then register the imx-audmix card driver.
otherwise, it should be linked by audio graph card.

Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Link: https://patch.msgid.link/20250226100508.2352568-5-shengjiu.wang@nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 sound/soc/fsl/fsl_audmix.c | 16 +++++++++++-----
 1 file changed, 11 insertions(+), 5 deletions(-)

diff --git a/sound/soc/fsl/fsl_audmix.c b/sound/soc/fsl/fsl_audmix.c
index 672148dd4b234..acb499a5043c8 100644
--- a/sound/soc/fsl/fsl_audmix.c
+++ b/sound/soc/fsl/fsl_audmix.c
@@ -492,11 +492,17 @@ static int fsl_audmix_probe(struct platform_device *pdev)
 		goto err_disable_pm;
 	}
 
-	priv->pdev = platform_device_register_data(dev, "imx-audmix", 0, NULL, 0);
-	if (IS_ERR(priv->pdev)) {
-		ret = PTR_ERR(priv->pdev);
-		dev_err(dev, "failed to register platform: %d\n", ret);
-		goto err_disable_pm;
+	/*
+	 * If dais property exist, then register the imx-audmix card driver.
+	 * otherwise, it should be linked by audio graph card.
+	 */
+	if (of_find_property(pdev->dev.of_node, "dais", NULL)) {
+		priv->pdev = platform_device_register_data(dev, "imx-audmix", 0, NULL, 0);
+		if (IS_ERR(priv->pdev)) {
+			ret = PTR_ERR(priv->pdev);
+			dev_err(dev, "failed to register platform: %d\n", ret);
+			goto err_disable_pm;
+		}
 	}
 
 	return 0;
-- 
2.39.5

[PATCH AUTOSEL 6.1 7/9] mmc: dw_mmc: add a quirk for accessing 64-bit FIFOs in two halves

[Sasha Levin]

From: Kaustabh Chakraborty <kauschluss@disroot.org>

[ Upstream commit 57c0902f8bec51add5a1eb908d8b876592725d81 ]

In certain DW MMC implementations (such as in some Exynos7870
controllers), 64-bit read/write is not allowed from a 64-bit FIFO.
Add a quirk which facilitates accessing the 64-bit FIFO registers in two
32-bit halves.

Signed-off-by: Kaustabh Chakraborty <kauschluss@disroot.org>
Link: https://lore.kernel.org/r/20250219-exynos7870-mmc-v2-2-b4255a3e39ed@disroot.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/mmc/host/dw_mmc.c | 94 ++++++++++++++++++++++++++++++++++++++-
 drivers/mmc/host/dw_mmc.h | 27 +++++++++++
 2 files changed, 119 insertions(+), 2 deletions(-)

diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
index d0da4573b38cd..0822493c949e8 100644
--- a/drivers/mmc/host/dw_mmc.c
+++ b/drivers/mmc/host/dw_mmc.c
@@ -2574,6 +2574,91 @@ static void dw_mci_pull_data64(struct dw_mci *host, void *buf, int cnt)
 	}
 }
 
+static void dw_mci_push_data64_32(struct dw_mci *host, void *buf, int cnt)
+{
+	struct mmc_data *data = host->data;
+	int init_cnt = cnt;
+
+	/* try and push anything in the part_buf */
+	if (unlikely(host->part_buf_count)) {
+		int len = dw_mci_push_part_bytes(host, buf, cnt);
+
+		buf += len;
+		cnt -= len;
+
+		if (host->part_buf_count == 8) {
+			mci_fifo_l_writeq(host->fifo_reg, host->part_buf);
+			host->part_buf_count = 0;
+		}
+	}
+#ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
+	if (unlikely((unsigned long)buf & 0x7)) {
+		while (cnt >= 8) {
+			u64 aligned_buf[16];
+			int len = min(cnt & -8, (int)sizeof(aligned_buf));
+			int items = len >> 3;
+			int i;
+			/* memcpy from input buffer into aligned buffer */
+			memcpy(aligned_buf, buf, len);
+			buf += len;
+			cnt -= len;
+			/* push data from aligned buffer into fifo */
+			for (i = 0; i < items; ++i)
+				mci_fifo_l_writeq(host->fifo_reg, aligned_buf[i]);
+		}
+	} else
+#endif
+	{
+		u64 *pdata = buf;
+
+		for (; cnt >= 8; cnt -= 8)
+			mci_fifo_l_writeq(host->fifo_reg, *pdata++);
+		buf = pdata;
+	}
+	/* put anything remaining in the part_buf */
+	if (cnt) {
+		dw_mci_set_part_bytes(host, buf, cnt);
+		/* Push data if we have reached the expected data length */
+		if ((data->bytes_xfered + init_cnt) ==
+		    (data->blksz * data->blocks))
+			mci_fifo_l_writeq(host->fifo_reg, host->part_buf);
+	}
+}
+
+static void dw_mci_pull_data64_32(struct dw_mci *host, void *buf, int cnt)
+{
+#ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
+	if (unlikely((unsigned long)buf & 0x7)) {
+		while (cnt >= 8) {
+			/* pull data from fifo into aligned buffer */
+			u64 aligned_buf[16];
+			int len = min(cnt & -8, (int)sizeof(aligned_buf));
+			int items = len >> 3;
+			int i;
+
+			for (i = 0; i < items; ++i)
+				aligned_buf[i] = mci_fifo_l_readq(host->fifo_reg);
+
+			/* memcpy from aligned buffer into output buffer */
+			memcpy(buf, aligned_buf, len);
+			buf += len;
+			cnt -= len;
+		}
+	} else
+#endif
+	{
+		u64 *pdata = buf;
+
+		for (; cnt >= 8; cnt -= 8)
+			*pdata++ = mci_fifo_l_readq(host->fifo_reg);
+		buf = pdata;
+	}
+	if (cnt) {
+		host->part_buf = mci_fifo_l_readq(host->fifo_reg);
+		dw_mci_pull_final_bytes(host, buf, cnt);
+	}
+}
+
 static void dw_mci_pull_data(struct dw_mci *host, void *buf, int cnt)
 {
 	int len;
@@ -3374,8 +3459,13 @@ int dw_mci_probe(struct dw_mci *host)
 		width = 16;
 		host->data_shift = 1;
 	} else if (i == 2) {
-		host->push_data = dw_mci_push_data64;
-		host->pull_data = dw_mci_pull_data64;
+		if ((host->quirks & DW_MMC_QUIRK_FIFO64_32)) {
+			host->push_data = dw_mci_push_data64_32;
+			host->pull_data = dw_mci_pull_data64_32;
+		} else {
+			host->push_data = dw_mci_push_data64;
+			host->pull_data = dw_mci_pull_data64;
+		}
 		width = 64;
 		host->data_shift = 3;
 	} else {
diff --git a/drivers/mmc/host/dw_mmc.h b/drivers/mmc/host/dw_mmc.h
index 4ed81f94f7cab..af16dbb37f261 100644
--- a/drivers/mmc/host/dw_mmc.h
+++ b/drivers/mmc/host/dw_mmc.h
@@ -280,6 +280,8 @@ struct dw_mci_board {
 
 /* Support for longer data read timeout */
 #define DW_MMC_QUIRK_EXTENDED_TMOUT            BIT(0)
+/* Force 32-bit access to the FIFO */
+#define DW_MMC_QUIRK_FIFO64_32                 BIT(1)
 
 #define DW_MMC_240A		0x240a
 #define DW_MMC_280A		0x280a
@@ -471,6 +473,31 @@ struct dw_mci_board {
 #define mci_fifo_writel(__value, __reg)	__raw_writel(__reg, __value)
 #define mci_fifo_writeq(__value, __reg)	__raw_writeq(__reg, __value)
 
+/*
+ * Some dw_mmc devices have 64-bit FIFOs, but expect them to be
+ * accessed using two 32-bit accesses. If such controller is used
+ * with a 64-bit kernel, this has to be done explicitly.
+ */
+static inline u64 mci_fifo_l_readq(void __iomem *addr)
+{
+	u64 ans;
+	u32 proxy[2];
+
+	proxy[0] = mci_fifo_readl(addr);
+	proxy[1] = mci_fifo_readl(addr + 4);
+	memcpy(&ans, proxy, 8);
+	return ans;
+}
+
+static inline void mci_fifo_l_writeq(void __iomem *addr, u64 value)
+{
+	u32 proxy[2];
+
+	memcpy(proxy, &value, 8);
+	mci_fifo_writel(addr, proxy[0]);
+	mci_fifo_writel(addr + 4, proxy[1]);
+}
+
 /* Register access macros */
 #define mci_readl(dev, reg)			\
 	readl_relaxed((dev)->regs + SDMMC_##reg)
-- 
2.39.5

[PATCH AUTOSEL 6.1 8/9] ALSA: usb-audio: Fix CME quirk for UF series keyboards

[Sasha Levin]

From: Ricard Wanderlof <ricard2013@butoba.net>

[ Upstream commit c2820405ba55a38932aa2177f026b70064296663 ]

Fix quirk for CME master keyboards so it not only handles
sysex but also song position pointer, MIDI timing clock, start
and stop messages, and active sensing. All of these can be
output by the CME UF series master keyboards.

Tested with a CME UF6 in a desktop Linux environment as
well as on the Zynthian Raspberry Pi based platform.

Signed-off-by: Ricard Wanderlof <ricard2013@butoba.net>
Link: https://patch.msgid.link/20250313-cme-fix-v1-1-d404889e4de8@butoba.net
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 sound/usb/midi.c | 80 ++++++++++++++++++++++++++++++++++++++++++++----
 1 file changed, 74 insertions(+), 6 deletions(-)

diff --git a/sound/usb/midi.c b/sound/usb/midi.c
index eed71369c7af2..d300cd1f922b6 100644
--- a/sound/usb/midi.c
+++ b/sound/usb/midi.c
@@ -489,16 +489,84 @@ static void ch345_broken_sysex_input(struct snd_usb_midi_in_endpoint *ep,
 
 /*
  * CME protocol: like the standard protocol, but SysEx commands are sent as a
- * single USB packet preceded by a 0x0F byte.
+ * single USB packet preceded by a 0x0F byte, as are system realtime
+ * messages and MIDI Active Sensing.
+ * Also, multiple messages can be sent in the same packet.
  */
 static void snd_usbmidi_cme_input(struct snd_usb_midi_in_endpoint *ep,
 				  uint8_t *buffer, int buffer_length)
 {
-	if (buffer_length < 2 || (buffer[0] & 0x0f) != 0x0f)
-		snd_usbmidi_standard_input(ep, buffer, buffer_length);
-	else
-		snd_usbmidi_input_data(ep, buffer[0] >> 4,
-				       &buffer[1], buffer_length - 1);
+	int remaining = buffer_length;
+
+	/*
+	 * CME send sysex, song position pointer, system realtime
+	 * and active sensing using CIN 0x0f, which in the standard
+	 * is only intended for single byte unparsed data.
+	 * So we need to interpret these here before sending them on.
+	 * By default, we assume single byte data, which is true
+	 * for system realtime (midi clock, start, stop and continue)
+	 * and active sensing, and handle the other (known) cases
+	 * separately.
+	 * In contrast to the standard, CME does not split sysex
+	 * into multiple 4-byte packets, but lumps everything together
+	 * into one. In addition, CME can string multiple messages
+	 * together in the same packet; pressing the Record button
+	 * on an UF6 sends a sysex message directly followed
+	 * by a song position pointer in the same packet.
+	 * For it to have any reasonable meaning, a sysex message
+	 * needs to be at least 3 bytes in length (0xf0, id, 0xf7),
+	 * corresponding to a packet size of 4 bytes, and the ones sent
+	 * by CME devices are 6 or 7 bytes, making the packet fragments
+	 * 7 or 8 bytes long (six or seven bytes plus preceding CN+CIN byte).
+	 * For the other types, the packet size is always 4 bytes,
+	 * as per the standard, with the data size being 3 for SPP
+	 * and 1 for the others.
+	 * Thus all packet fragments are at least 4 bytes long, so we can
+	 * skip anything that is shorter; this also conveniantly skips
+	 * packets with size 0, which CME devices continuously send when
+	 * they have nothing better to do.
+	 * Another quirk is that sometimes multiple messages are sent
+	 * in the same packet. This has been observed for midi clock
+	 * and active sensing i.e. 0x0f 0xf8 0x00 0x00 0x0f 0xfe 0x00 0x00,
+	 * but also multiple note ons/offs, and control change together
+	 * with MIDI clock. Similarly, some sysex messages are followed by
+	 * the song position pointer in the same packet, and occasionally
+	 * additionally by a midi clock or active sensing.
+	 * We handle this by looping over all data and parsing it along the way.
+	 */
+	while (remaining >= 4) {
+		int source_length = 4; /* default */
+
+		if ((buffer[0] & 0x0f) == 0x0f) {
+			int data_length = 1; /* default */
+
+			if (buffer[1] == 0xf0) {
+				/* Sysex: Find EOX and send on whole message. */
+				/* To kick off the search, skip the first
+				 * two bytes (CN+CIN and SYSEX (0xf0).
+				 */
+				uint8_t *tmp_buf = buffer + 2;
+				int tmp_length = remaining - 2;
+
+				while (tmp_length > 1 && *tmp_buf != 0xf7) {
+					tmp_buf++;
+					tmp_length--;
+				}
+				data_length = tmp_buf - buffer;
+				source_length = data_length + 1;
+			} else if (buffer[1] == 0xf2) {
+				/* Three byte song position pointer */
+				data_length = 3;
+			}
+			snd_usbmidi_input_data(ep, buffer[0] >> 4,
+					       &buffer[1], data_length);
+		} else {
+			/* normal channel events */
+			snd_usbmidi_standard_input(ep, buffer, source_length);
+		}
+		buffer += source_length;
+		remaining -= source_length;
+	}
 }
 
 /*
-- 
2.39.5

[PATCH AUTOSEL 6.1 9/9] ASoC: amd: Add DMI quirk for ACP6X mic support

[Sasha Levin]

From: keenplify <keenplify@gmail.com>

[ Upstream commit 309b367eafc8e162603cd29189da6db770411fea ]

Some AMD laptops with ACP6X do not expose the DMIC properly on Linux.
Adding a DMI quirk enables mic functionality.

Similar to Bugzilla #218402, this issue affects multiple users.

Link: https://bugzilla.kernel.org/show_bug.cgi?id=219853
Signed-off-by: keenplify <keenplify@gmail.com>
Link: https://patch.msgid.link/20250315111617.12194-1-keenplify@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 sound/soc/amd/yc/acp6x-mach.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/sound/soc/amd/yc/acp6x-mach.c b/sound/soc/amd/yc/acp6x-mach.c
index b45ff8f65f5e2..8ade29e491c51 100644
--- a/sound/soc/amd/yc/acp6x-mach.c
+++ b/sound/soc/amd/yc/acp6x-mach.c
@@ -472,6 +472,13 @@ static const struct dmi_system_id yc_acp_quirk_table[] = {
 			DMI_MATCH(DMI_PRODUCT_VERSION, "pang13"),
 		}
 	},
+	{
+		.driver_data = &acp6x_card,
+		.matches = {
+			DMI_MATCH(DMI_BOARD_VENDOR, "Micro-Star International Co., Ltd."),
+			DMI_MATCH(DMI_PRODUCT_NAME, "Bravo 15 C7UCX"),
+		}
+	},
 	{}
 };
 
-- 
2.39.5

Re: [PATCH AUTOSEL 6.1 6/9] ASoC: fsl_audmix: register card device depends on 'dais' property

[Pavel Machek]

[-- Attachment #1: Type: text/plain, Size: 1438 bytes --]

Hi!

> [ Upstream commit 294a60e5e9830045c161181286d44ce669f88833 ]
> 
> In order to make the audmix device linked by audio graph card, make
> 'dais' property to be optional.
> 
> If 'dais' property exists, then register the imx-audmix card driver.
> otherwise, it should be linked by audio graph card.

This is part of series, AFAICT; should we have it in -stable?

Best regards,
									Pavel

> +++ b/sound/soc/fsl/fsl_audmix.c
> @@ -492,11 +492,17 @@ static int fsl_audmix_probe(struct platform_device *pdev)
>  		goto err_disable_pm;
>  	}
>  
> -	priv->pdev = platform_device_register_data(dev, "imx-audmix", 0, NULL, 0);
> -	if (IS_ERR(priv->pdev)) {
> -		ret = PTR_ERR(priv->pdev);
> -		dev_err(dev, "failed to register platform: %d\n", ret);
> -		goto err_disable_pm;
> +	/*
> +	 * If dais property exist, then register the imx-audmix card driver.
> +	 * otherwise, it should be linked by audio graph card.
> +	 */
> +	if (of_find_property(pdev->dev.of_node, "dais", NULL)) {
> +		priv->pdev = platform_device_register_data(dev, "imx-audmix", 0, NULL, 0);
> +		if (IS_ERR(priv->pdev)) {
> +			ret = PTR_ERR(priv->pdev);
> +			dev_err(dev, "failed to register platform: %d\n", ret);
> +			goto err_disable_pm;
> +		}
>  	}
>  
>  	return 0;

-- 
DENX Software Engineering GmbH,        Managing Director: Erika Unter
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany

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