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:

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) {

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;

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; + } }

/*