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: Abhinav Kumar <abhinavk@xxxxxxxxxxxxxx>
---
drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c | 50 +++++++++++++++++++++++++++++++++
drivers/gpu/drm/msm/msm_kms.h | 4 +++
2 files changed, 54 insertions(+)
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
index 88e9cc3..ead2478 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
@@ -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
diff --git a/drivers/gpu/drm/msm/msm_kms.h b/drivers/gpu/drm/msm/msm_kms.h
index d84bfda..b31fdad 100644
--- a/drivers/gpu/drm/msm/msm_kms.h
+++ b/drivers/gpu/drm/msm/msm_kms.h
@@ -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);
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project
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