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: Abhinav Kumar abhinavk@codeaurora.org --- drivers/gpu/drm/msm/dsi/dsi.c | 4 ++++ drivers/gpu/drm/msm/dsi/dsi.h | 5 ++++- drivers/gpu/drm/msm/dsi/dsi_host.c | 15 +++++++++++++++ 3 files changed, 23 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/msm/dsi/dsi.c b/drivers/gpu/drm/msm/dsi/dsi.c index f68f34b..bccc006 100644 --- a/drivers/gpu/drm/msm/dsi/dsi.c +++ b/drivers/gpu/drm/msm/dsi/dsi.c @@ -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); +}
diff --git a/drivers/gpu/drm/msm/dsi/dsi.h b/drivers/gpu/drm/msm/dsi/dsi.h index 7abfeab..e26223c 100644 --- a/drivers/gpu/drm/msm/dsi/dsi.h +++ b/drivers/gpu/drm/msm/dsi/dsi.h @@ -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 { diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c index 316e78d..899b6fc 100644 --- a/drivers/gpu/drm/msm/dsi/dsi_host.c +++ b/drivers/gpu/drm/msm/dsi/dsi_host.c @@ -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); +}