kernel/drivers/gpu/drm/amd/amdgpu/isp_v4_1_1.c, branch master

drm/amdgpu: Fix ISP segfault issue in kernel v7.0

2026-03-17T16:19:29Z

Add NULL pointer checks for dev->type before accessing dev->type->name in ISP genpd add/remove functions to prevent kernel crashes. This regression was introduced in v7.0 as the wakeup sources are registered using physical device instead of ACPI device. This led to adding wakeup source device as the first child of AMDGPU device without initializing dev-type variable, and resulted in segfault when accessed it in the amdgpu isp driver. Fixes: 057edc58aa59 ("ACPI: PM: Register wakeup sources under physical devices") Suggested-by: Bin Du Reviewed-by: Mario Limonciello Signed-off-by: Pratap Nirujogi Signed-off-by: Alex Deucher (cherry picked from commit c51632d1ed7ac5aed2d40dbc0718d75342c12c6a)

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-22T01:09:51Z

This was done entirely with mindless brute force, using git grep -l '\

treewide: Replace kmalloc with kmalloc_obj for non-scalar types

2026-02-21T09:02:28Z

This is the result of running the Coccinelle script from scripts/coccinelle/api/kmalloc_objs.cocci. The script is designed to avoid scalar types (which need careful case-by-case checking), and instead replace kmalloc-family calls that allocate struct or union object instances: Single allocations: kmalloc(sizeof(TYPE), ...) are replaced with: kmalloc_obj(TYPE, ...) Array allocations: kmalloc_array(COUNT, sizeof(TYPE), ...) are replaced with: kmalloc_objs(TYPE, COUNT, ...) Flex array allocations: kmalloc(struct_size(PTR, FAM, COUNT), ...) are replaced with: kmalloc_flex(*PTR, FAM, COUNT, ...) (where TYPE may also be *VAR) The resulting allocations no longer return "void *", instead returning "TYPE *". Signed-off-by: Kees Cook

drm/amd/amdgpu: Fix SMU warning during isp suspend-resume

2026-01-05T22:29:51Z

ISP mfd child devices are using genpd and the system suspend-resume operations between genpd and amdgpu parent device which uses only runtime suspend-resume are not in sync. Linux power manager during suspend-resume resuming the genpd devices earlier than the amdgpu parent device. This is resulting in the below warning as SMU is in suspended state when genpd attempts to resume ISP. WARNING: CPU: 13 PID: 5435 at drivers/gpu/drm/amd/amdgpu/../pm/swsmu/amdgpu_smu.c:398 smu_dpm_set_power_gate+0x36f/0x380 [amdgpu] To fix this warning isp suspend-resume is handled as part of amdgpu parent device suspend-resume instead of genpd sequence. Each ISP MFD child device is marked as dev_pm_syscore_device to skip genpd suspend-resume and use pm_runtime_force api's to suspend-resume the devices when callbacks from amdgpu are received. Co-developed-by: Gjorgji Rosikopulos Signed-off-by: Gjorgji Rosikopulos Signed-off-by: Bin Du Signed-off-by: Pratap Nirujogi Reviewed-by: Mario Limonciello (AMD) Signed-off-by: Alex Deucher (cherry picked from commit 0288a345f19b2162546352161509bb24614729e1)

drm/amd/amdgpu: Declare isp firmware binary file

2025-09-09T20:41:15Z

Declare isp firmware file isp_4_1_1.bin required by isp4.1.1 device. Suggested-by: Alexey Zagorodnikov Reviewed-by: Mario Limonciello Signed-off-by: Pratap Nirujogi Signed-off-by: Alex Deucher (cherry picked from commit d97b74a833eba1f4f69f67198fd98ef036c0e5f9) Cc: stable@vger.kernel.org

drm/amd/amdgpu: Initialize swnode for ISP MFD device

2025-07-16T20:17:35Z

Create amd_isp_capture MFD device with swnode initialized to isp specific software_node part of fwnode graph in amd_isp4 x86/platform driver. The isp driver use this swnode handle to retrieve the critical properties (data-lanes, mipi phyid, link-frequencies etc.) required for camera to work on AMD ISP4 based targets. Reviewed-by: Mario Limonciello Signed-off-by: Pratap Nirujogi Signed-off-by: Alex Deucher

drm/amd/amdgpu: Refine isp_v4_1_1 logging

2025-06-24T14:02:55Z

Replace DRM_ERROR with drm_err function and update log messages to drop __func__ and print return value. Reviewed-by: Mario Limonciello Signed-off-by: Pratap Nirujogi Signed-off-by: Alex Deucher

drm/amd/amdgpu: Add ISP Generic PM Domain (genpd) support

2025-06-24T14:02:50Z

AMDISP I2C device requires to power on ISP HW to probe the sensor device. Instead of using the exported symbols from ISP driver to control the power and clocks remotely,added Generic PM Domain (genpd) support in amdgpu_isp device for its child devices (amd_isp_capture, amd_isp_i2c_designware) to set power and clocks using PM methods. Co-developed-by: Bin Du Signed-off-by: Bin Du Reviewed-by: Mario Limonciello Signed-off-by: Pratap Nirujogi Signed-off-by: Alex Deucher

drm/amd/amdgpu: Add GPIO resources required for amdisp

2025-05-28T20:01:39Z

ISP is a child device to GFX, and its device specific information is not available in ACPI. Adding the 2 GPIO resources required for ISP_v4_1_1 in amdgpu_isp driver. - GPIO 0 to allow sensor driver to enable and disable sensor module. - GPIO 85 to allow ISP driver to enable and disable ISP RGB streaming mode. Signed-off-by: Pratap Nirujogi Reviewed-by: Mario Limonciello Signed-off-by: Alex Deucher

drm/amdgpu: Add amdisp pinctrl MFD resource

2025-02-27T20:52:49Z

AMDISP GPIO control uses a dedicated pinctrl driver, and requires MFD hotadd GPIO resources. Co-developed-by: Pratap Nirujogi Signed-off-by: Benjamin Chan Signed-off-by: Pratap Nirujogi Reviewed-by: Mario Limonciello Signed-off-by: Alex Deucher