Commit a698b5cd authored by Abhinav Kumar's avatar Abhinav Kumar Committed by Rob Clark
Browse files

drm/msm/disp/dpu1: add API to take DPU register snapshot 



Add an API to take a snapshot of DPU controller registers. This API
will be used by the msm_disp_snapshot module to capture the DPU
snapshot.

Signed-off-by: default avatarAbhinav Kumar <abhinavk@codeaurora.org>
Reviewed-by: default avatarDmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/1618606645-19695-6-git-send-email-abhinavk@codeaurora.org


Signed-off-by: default avatarRob Clark <robdclark@chromium.org>
parent 0f6090f3

drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c

+50 −0
Original line number Diff line number Diff line
@@ -19,6 +19,7 @@ 
#include "msm_drv.h"

#include "msm_mmu.h"

#include "msm_gem.h"

#include "disp/msm_disp_snapshot.h"



#include "dpu_kms.h"

#include "dpu_core_irq.h"
@@ -798,6 +799,54 @@ static void dpu_irq_uninstall(struct msm_kms *kms) 
	dpu_core_irq_uninstall(dpu_kms);

}



static void dpu_kms_mdp_snapshot(struct msm_kms *kms)

{

	int i;

	struct dpu_kms *dpu_kms;

	struct dpu_mdss_cfg *cat;

	struct dpu_hw_mdp *top;

	struct msm_disp_state *disp_state;



	disp_state = kms->disp_state;



	dpu_kms = to_dpu_kms(kms);



	cat = dpu_kms->catalog;

	top = dpu_kms->hw_mdp;



	pm_runtime_get_sync(&dpu_kms->pdev->dev);



	/* dump CTL sub-blocks HW regs info */

	for (i = 0; i < cat->ctl_count; i++)

		msm_disp_snapshot_add_block(disp_state, cat->ctl[i].len,

				dpu_kms->mmio + cat->ctl[i].base, "ctl_%d", i);



	/* dump DSPP sub-blocks HW regs info */

	for (i = 0; i < cat->dspp_count; i++)

		msm_disp_snapshot_add_block(disp_state, cat->dspp[i].len,

				dpu_kms->mmio + cat->dspp[i].base, "dspp_%d", i);



	/* dump INTF sub-blocks HW regs info */

	for (i = 0; i < cat->intf_count; i++)

		msm_disp_snapshot_add_block(disp_state, cat->intf[i].len,

				dpu_kms->mmio + cat->intf[i].base, "intf_%d", i);



	/* dump PP sub-blocks HW regs info */

	for (i = 0; i < cat->pingpong_count; i++)

		msm_disp_snapshot_add_block(disp_state, cat->pingpong[i].len,

				dpu_kms->mmio + cat->pingpong[i].base, "pingpong_%d", i);



	/* dump SSPP sub-blocks HW regs info */

	for (i = 0; i < cat->sspp_count; i++)

		msm_disp_snapshot_add_block(disp_state, cat->sspp[i].len,

				dpu_kms->mmio + cat->sspp[i].base, "sspp_%d", i);



	msm_disp_snapshot_add_block(disp_state, top->hw.length,

			dpu_kms->mmio + top->hw.blk_off, "top");



	pm_runtime_put_sync(&dpu_kms->pdev->dev);

}



static const struct msm_kms_funcs kms_funcs = {

	.hw_init         = dpu_kms_hw_init,

	.irq_preinstall  = dpu_irq_preinstall,
@@ -818,6 +867,7 @@ static const struct msm_kms_funcs kms_funcs = { 
	.round_pixclk    = dpu_kms_round_pixclk,

	.destroy         = dpu_kms_destroy,

	.set_encoder_mode = _dpu_kms_set_encoder_mode,

	.snapshot        = dpu_kms_mdp_snapshot,

#ifdef CONFIG_DEBUG_FS

	.debugfs_init    = dpu_kms_debugfs_init,

#endif

drivers/gpu/drm/msm/msm_kms.h

+4 −0
Original line number Diff line number Diff line
@@ -122,6 +122,10 @@ struct msm_kms_funcs { 
				 bool cmd_mode);

	/* cleanup: */

	void (*destroy)(struct msm_kms *kms);



	/* snapshot: */

	void (*snapshot)(struct msm_kms *kms);



#ifdef CONFIG_DEBUG_FS

	/* debugfs: */

	int (*debugfs_init)(struct msm_kms *kms, struct drm_minor *minor);