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@codeaurora.org --- 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);