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accel/ivpu: Fix DCT active percent format

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The pcode MAILBOX STATUS register PARAM2 field expects DCT active
percent in U1.7 value format. Convert percentage value to this
format before writing to the register.

Fixes: a19bffb10c ("accel/ivpu: Implement DCT handling")
Reviewed-by: Lizhi Hou <lizhi.hou@amd.com>
Signed-off-by: Karol Wachowski <karol.wachowski@linux.intel.com>
Link: https://lore.kernel.org/r/20251001104322.1249896-1-karol.wachowski@linux.intel.com
This commit is contained in:
Karol Wachowski
2025-10-01 12:43:22 +02:00
parent 30531e9ca7
commit aa1c2b073a
3 changed files with 9 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/accel/ivpu/ivpu_hw_btrs.c
View File

@@ -752,7 +752,7 @@ int ivpu_hw_btrs_dct_get_request(struct ivpu_device *vdev, bool *enable)
}
}
void ivpu_hw_btrs_dct_set_status(struct ivpu_device *vdev, bool enable, u32 active_percent)
void ivpu_hw_btrs_dct_set_status(struct ivpu_device *vdev, bool enable, u8 active_percent)
{
u32 val = 0;
u32 cmd = enable ? DCT_ENABLE : DCT_DISABLE;

2
drivers/accel/ivpu/ivpu_hw_btrs.h
View File

@@ -36,7 +36,7 @@ u32 ivpu_hw_btrs_dpu_freq_get(struct ivpu_device *vdev);
bool ivpu_hw_btrs_irq_handler_mtl(struct ivpu_device *vdev, int irq);
bool ivpu_hw_btrs_irq_handler_lnl(struct ivpu_device *vdev, int irq);
int ivpu_hw_btrs_dct_get_request(struct ivpu_device *vdev, bool *enable);
void ivpu_hw_btrs_dct_set_status(struct ivpu_device *vdev, bool enable, u32 active_percent);
void ivpu_hw_btrs_dct_set_status(struct ivpu_device *vdev, bool enable, u8 active_percent);
u32 ivpu_hw_btrs_telemetry_offset_get(struct ivpu_device *vdev);
u32 ivpu_hw_btrs_telemetry_size_get(struct ivpu_device *vdev);
u32 ivpu_hw_btrs_telemetry_enable_get(struct ivpu_device *vdev);

9
drivers/accel/ivpu/ivpu_pm.c
View File

@@ -502,6 +502,11 @@ void ivpu_pm_irq_dct_work_fn(struct work_struct *work)
else
ret = ivpu_pm_dct_disable(vdev);
if (!ret)
ivpu_hw_btrs_dct_set_status(vdev, enable, vdev->pm->dct_active_percent);
if (!ret) {
/* Convert percent to U1.7 format */
u8 val = DIV_ROUND_CLOSEST(vdev->pm->dct_active_percent * 128, 100);
ivpu_hw_btrs_dct_set_status(vdev, enable, val);
}
}