Commit 9d30a4bc authored by Abhinav Kumar's avatar Abhinav Kumar Committed by Rob Clark
Browse files

drm/msm/dsi: add API to take DSI register snapshot 



Add an API to take a snapshot of DSI controller registers. This API
will be used by the msm_disp_snapshot module to capture the DSI
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/1618606645-19695-4-git-send-email-abhinavk@codeaurora.org


Signed-off-by: default avatarRob Clark <robdclark@chromium.org>
parent 98659487

drivers/gpu/drm/msm/dsi/dsi.c

+4 −0
Original line number Diff line number Diff line
@@ -266,4 +266,8 @@ int msm_dsi_modeset_init(struct msm_dsi *msm_dsi, struct drm_device *dev, 
	return ret;

}



void msm_dsi_snapshot(struct msm_dsi *msm_dsi)

{

	msm_dsi_host_snapshot(msm_dsi->host);

}

drivers/gpu/drm/msm/dsi/dsi.h

+4 −1
Original line number Diff line number Diff line
@@ -15,6 +15,7 @@ 
#include <drm/drm_panel.h>



#include "msm_drv.h"

#include "disp/msm_disp_snapshot.h"



#define DSI_0	0

#define DSI_1	1
@@ -90,6 +91,8 @@ static inline bool msm_dsi_device_connected(struct msm_dsi *msm_dsi) 
	return msm_dsi->panel || msm_dsi->external_bridge;

}



void msm_dsi_snapshot(struct msm_dsi *msm_dsi);



struct drm_encoder *msm_dsi_get_encoder(struct msm_dsi *msm_dsi);



/* dsi host */
@@ -146,7 +149,7 @@ int dsi_clk_init_v2(struct msm_dsi_host *msm_host); 
int dsi_clk_init_6g_v2(struct msm_dsi_host *msm_host);

int dsi_calc_clk_rate_v2(struct msm_dsi_host *msm_host, bool is_dual_dsi);

int dsi_calc_clk_rate_6g(struct msm_dsi_host *msm_host, bool is_dual_dsi);



void msm_dsi_host_snapshot(struct mipi_dsi_host *host);

/* dsi phy */

struct msm_dsi_phy;

struct msm_dsi_phy_shared_timings {

drivers/gpu/drm/msm/dsi/dsi_host.c

+15 −0
Original line number Diff line number Diff line
@@ -2488,3 +2488,18 @@ struct drm_bridge *msm_dsi_host_get_bridge(struct mipi_dsi_host *host) 
	return of_drm_find_bridge(msm_host->device_node);

}



void msm_dsi_host_snapshot(struct mipi_dsi_host *host)

{

	struct msm_dsi_host *msm_host = to_msm_dsi_host(host);

	struct drm_device *dev = msm_host->dev;

	struct msm_disp_state *disp_state;



	disp_state = msm_disp_state_get(dev);



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



	msm_disp_snapshot_add_block(disp_state, msm_iomap_size(msm_host->pdev, "dsi_ctrl"),

			msm_host->ctrl_base, "dsi%d_ctrl", msm_host->id);



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

}