kernel/linux.git/drivers/soundwire/intel_init.c, branch v6.1.168

soundwire: intel: cleanup definition of LCOUNT

2022-09-01T08:59:14+00:00

Add definition in header file rather than hidden in code. Signed-off-by: Pierre-Louis Bossart Reviewed-by: Rander Wang Signed-off-by: Bard Liao Link: https://lore.kernel.org/r/20220823053846.2684635-2-yung-chuan.liao@linux.intel.com Signed-off-by: Vinod Koul

soundwire: Replace acpi_bus_get_device()

2022-02-10T13:48:19+00:00

Replace acpi_bus_get_device() that is going to be dropped with acpi_fetch_acpi_dev(). No intentional functional impact. Signed-off-by: Rafael J. Wysocki Link: https://lore.kernel.org/r/3173256.44csPzL39Z@kreacher Signed-off-by: Vinod Koul

soundwire: intel: Use auxiliary_device driver data helpers

2021-12-22T12:59:01+00:00

Use auxiliary_get_drvdata and auxiliary_set_drvdata helpers. Reviewed-by: Andy Shevchenko Reviewed-by: Cezary Rojewski Signed-off-by: David E. Box Link: https://lore.kernel.org/r/20211221235852.323752-3-david.e.box@linux.intel.com Signed-off-by: Greg Kroah-Hartman

soundwire: intel: introduce shim and alh base

2021-08-02T14:45:42+00:00

shim base and alh base are platform-dependent. Adding these two parameters allows us to use different shim/alh base for each platform. Signed-off-by: Bard Liao Reviewed-by: Pierre-Louis Bossart Reviewed-by: Ranjani Sridharan Acked-By: Vinod Koul Link: https://lore.kernel.org/r/20210723115451.7245-7-yung-chuan.liao@linux.intel.com Signed-off-by: Mark Brown

soundwire: move intel sdw register definitions to sdw_intel.h

2021-08-02T14:45:34+00:00

Those Intel sdw registers will be used by ASoC SOF drivers in the following commits. So move those definitions to sdw_intel.h and it can be visible to SOF drivers. Signed-off-by: Bard Liao Reviewed-by: Pierre-Louis Bossart Reviewed-by: Ranjani Sridharan Acked-By: Vinod Koul Link: https://lore.kernel.org/r/20210723115451.7245-2-yung-chuan.liao@linux.intel.com Signed-off-by: Mark Brown

soundwire: intel: move to auxiliary bus

2021-06-14T04:42:26+00:00

Now that the auxiliary_bus exists, there's no reason to use platform devices as children of a PCI device any longer. This patch refactors the code by extending a basic auxiliary device with Intel link-specific structures that need to be passed between controller and link levels. This refactoring is much cleaner with no need for cross-pointers between device and link structures. Note that the auxiliary bus API has separate init and add steps, which requires more attention in the error unwinding paths. The main loop needs to deal with kfree() and auxiliary_device_uninit() for the current iteration before jumping to the common label which releases everything allocated in prior iterations. Signed-off-by: Pierre-Louis Bossart Reviewed-by: Guennadi Liakhovetski Reviewed-by: Ranjani Sridharan Signed-off-by: Bard Liao Link: https://lore.kernel.org/r/20210511052132.28150-1-yung-chuan.liao@linux.intel.com Signed-off-by: Vinod Koul

soundwire: intel_init: test link->cdns

2021-04-06T04:56:44+00:00

intel_link_probe() could return error and dev_get_drvdata() will return null in such case. So we have to test link->cdns after link->cdns = dev_get_drvdata(&ldev->auxdev.dev); Otherwise, we will meet the "kernel NULL pointer dereference" error. Signed-off-by: Bard Liao Reviewed-by: Ranjani Sridharan Reviewed-by: Rander Wang Reviewed-by: Pierre-Louis Bossart Link: https://lore.kernel.org/r/20210406010101.11442-1-yung-chuan.liao@linux.intel.com Signed-off-by: Vinod Koul

ALSA: hda: move Intel SoundWire ACPI scan to dedicated module

2021-03-02T14:33:00+00:00

The ACPI scan capabilities is called from the intel-dspconfig as well as the SOF/HDaudio drivers. This creates dependencies and randconfig issues when HDaudio and SOF/SoundWire are not all configured as modules. To simplify Kconfig dependencies between HDAudio, SoundWire, SOF and intel-dspconfig, move the ACPI scan helpers to a dedicated module. This follows the same idea as NHLT helpers which are already handled as a dedicated module. The only functional change is that the kernel parameter to filter links is now handled by a different module, but that was only provided for developers needing work-arounds for early BIOS releases. Reported-by: Arnd Bergmann Signed-off-by: Pierre-Louis Bossart Reviewed-by: Kai Vehmanen Reviewed-by: Guennadi Liakhovetski Reviewed-by: Bard Liao Acked-by: Mark Brown Acked-by: Vinod Koul Link: https://lore.kernel.org/r/20210302003125.1178419-7-pierre-louis.bossart@linux.intel.com Signed-off-by: Takashi Iwai

soundwire: intel: fix possible crash when no device is detected

2021-02-11T05:19:52+00:00

acpi_walk_namespace can return success without executing our callback which initializes info->handle. If the random value in this structure is a valid address (which is on the stack, so it's quite possible), then nothing bad will happen, because: sdw_intel_scan_controller -> acpi_bus_get_device -> acpi_get_device_data -> acpi_get_data_full -> acpi_ns_validate_handle will reject this handle. However, if the value from the stack doesn't point to a valid address, we get this: BUG: kernel NULL pointer dereference, address: 0000000000000050 PGD 0 P4D 0 Oops: 0000 [#1] SMP NOPTI CPU: 6 PID: 472 Comm: systemd-udevd Tainted: G W 5.10.0-1-amd64 #1 Debian 5.10.4-1 Hardware name: HP HP Pavilion Laptop 15-cs3xxx/86E2, BIOS F.05 01/01/2020 RIP: 0010:acpi_ns_validate_handle+0x1a/0x23 Code: 00 48 83 c4 10 5b 5d 41 5c 41 5d 41 5e 41 5f c3 0f 1f 44 00 00 48 8d 57 ff 48 89 f8 48 83 fa fd 76 08 48 8b 05 0c b8 67 01 c3 <80> 7f 08 0f 74 02 31 c0 c3 0f 1f 44 00 00 48 8b 3d f6 b7 67 01 e8 RSP: 0000:ffffc388807c7b20 EFLAGS: 00010213 RAX: 0000000000000048 RBX: ffffc388807c7b70 RCX: 0000000000000000 RDX: 0000000000000047 RSI: 0000000000000246 RDI: 0000000000000048 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffc0f5f4d1 R11: ffffffff8f0cb268 R12: 0000000000001001 R13: ffffffff8e33b160 R14: 0000000000000048 R15: 0000000000000000 FS: 00007f24548288c0(0000) GS:ffff9f781fb80000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000050 CR3: 0000000106158004 CR4: 0000000000770ee0 PKRU: 55555554 Call Trace: acpi_get_data_full+0x4d/0x92 acpi_bus_get_device+0x1f/0x40 sdw_intel_acpi_scan+0x59/0x230 [soundwire_intel] ? strstr+0x22/0x60 ? dmi_matches+0x76/0xe0 snd_intel_dsp_driver_probe.cold+0xaf/0x163 [snd_intel_dspcfg] azx_probe+0x7a/0x970 [snd_hda_intel] local_pci_probe+0x42/0x80 ? _cond_resched+0x16/0x40 pci_device_probe+0xfd/0x1b0 really_probe+0x205/0x460 driver_probe_device+0xe1/0x150 device_driver_attach+0xa1/0xb0 __driver_attach+0x8a/0x150 ? device_driver_attach+0xb0/0xb0 ? device_driver_attach+0xb0/0xb0 bus_for_each_dev+0x78/0xc0 bus_add_driver+0x12b/0x1e0 driver_register+0x8b/0xe0 ? 0xffffffffc0f65000 do_one_initcall+0x44/0x1d0 ? do_init_module+0x23/0x250 ? kmem_cache_alloc_trace+0xf5/0x200 do_init_module+0x5c/0x250 __do_sys_finit_module+0xb1/0x110 do_syscall_64+0x33/0x80 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Signed-off-by: Marcin Ślusarz Reviewed-by: Pierre-Louis Bossart Reviewed-by: Rafael J. Wysocki CC: stable@vger.kernel.org Link: https://lore.kernel.org/r/20210208120104.204761-1-marcin.slusarz@gmail.com Signed-off-by: Vinod Koul

soundwire: intel_init: use FIELD_{GET|PREP}

2020-09-04T09:16:42+00:00

use FIELD_{GET|PREP} in intel_init driver to get/set field values instead of open coding masks and shift operations. Signed-off-by: Vinod Koul Tested-by: Bard Liao Link: https://lore.kernel.org/r/20200903114504.1202143-9-vkoul@kernel.org Signed-off-by: Vinod Koul