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

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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 <bin.du@amd.com>
Signed-off-by: Bin Du <bin.du@amd.com>
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Pratap Nirujogi <pratap.nirujogi@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Pratap Nirujogi
2025-05-29 15:21:48 -04:00
committed by Alex Deucher
parent 9bed716f87
commit fd14786071
2 changed files with 157 additions and 1 deletions
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3
drivers/gpu/drm/amd/amdgpu/amdgpu_isp.h
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@@ -28,6 +28,8 @@
#ifndef __AMDGPU_ISP_H__
#define __AMDGPU_ISP_H__
#include <linux/pm_domain.h>
#define ISP_REGS_OFFSET_END 0x629A4
struct amdgpu_isp;
@@ -54,6 +56,7 @@ struct amdgpu_isp {
struct isp_platform_data *isp_pdata;
unsigned int harvest_config;
const struct firmware *fw;
struct generic_pm_domain ispgpd;
};
extern const struct amdgpu_ip_block_version isp_v4_1_0_ip_block;