Attachment 149319 Details for Bug 194966 – Patch /sys/dev/drm2/. radeonkms driver change device sclk and mclk when initializing according to drm.force_sclk and drm.force_mclk loader.conf tuneables

[patch] Patch /sys/dev/drm2/. radeonkms driver change device sclk and mclk when initializing according to drm.force_sclk and drm.force_mclk loader.conf tuneables

radeon_kms.patch (text/plain), 1.86 KB, created by zuborg on 2014-11-12 12:35:07 UTC

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Creator: zuborg

Created: 2014-11-12 12:35:07 UTC

Size: 1.86 KB

patch

obsolete

>Index: drmP.h
>===================================================================
>--- drmP.h	(revision 274286)
>+++ drmP.h	(working copy)
>@@ -1070,6 +1070,9 @@
> extern unsigned int drm_timestamp_precision;
> extern unsigned int drm_timestamp_monotonic;
> 
>+extern unsigned int drm_force_sclk;
>+extern unsigned int drm_force_mclk;
>+
> /* Device setup support (drm_drv.c) */
> int	drm_probe(device_t kdev, drm_pci_id_list_t *idlist);
> int	drm_attach(device_t kdev, drm_pci_id_list_t *idlist);
>Index: drm_drv.c
>===================================================================
>--- drm_drv.c	(revision 274286)
>+++ drm_drv.c	(working copy)
>@@ -56,6 +56,9 @@
> unsigned int drm_vblank_offdelay = 5000;    /* Default to 5000 msecs. */
> unsigned int drm_timestamp_precision = 20;  /* Default to 20 usecs. */
> 
>+unsigned int drm_force_sclk = 0;            /* MHz units */
>+unsigned int drm_force_mclk = 0;            /* MHz units */
>+
> /*
>  * Default to use monotonic timestamps for wait-for-vblank and page-flip
>  * complete events.
>@@ -77,6 +80,8 @@
> 	case MOD_LOAD:
> 		TUNABLE_INT_FETCH("drm.debug", &drm_debug_flag);
> 		TUNABLE_INT_FETCH("drm.notyet", &drm_notyet_flag);
>+		TUNABLE_INT_FETCH("drm.force_sclk", &drm_force_sclk);
>+		TUNABLE_INT_FETCH("drm.force_mclk", &drm_force_mclk);
> 		break;
> 	}
> 	return (0);
>Index: radeon/radeon_device.c
>===================================================================
>--- radeon/radeon_device.c	(revision 274286)
>+++ radeon/radeon_device.c	(working copy)
>@@ -1138,6 +1138,15 @@
> 	if (r)
> 		return r;
> 
>+	if (drm_force_sclk > 0) {
>+		rdev->pm.default_sclk = drm_force_sclk * 100;
>+		radeon_set_engine_clock(rdev, rdev->pm.default_sclk);
>+	}
>+	if (drm_force_mclk > 0) {
>+		rdev->pm.default_mclk = drm_force_mclk * 100;
>+		radeon_set_memory_clock(rdev, rdev->pm.default_mclk);
>+	}
>+
> 	r = radeon_ib_ring_tests(rdev);
> 	if (r)
> 		DRM_ERROR("ib ring test failed (%d).\n", r);

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Attachments on bug 194966: 149319