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msm: mdss: debugfs: xlog: enable xlog debug by default

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This change will enable by default the display
driver debugging features in non performance
builds to: dump MDSS registers during failures,
panic during fatal display driver errors and
enable some logging into an internal buffer
(to avoid logging overhead).

Change-Id: Idc5e2dbd6960ee568f3e18a103c248b20faca548
Signed-off-by: Ingrid Gallardo <ingridg@codeaurora.org>
[cip@codeaurora.org: Resolved Kconfig file location]
Signed-off-by: Clarence Ip <cip@codeaurora.org>
This commit is contained in:
Ingrid Gallardo 2015-01-08 15:21:30 -08:00 • committed by David Keitel
parent d4d841c63e
commit 7d4071a7fe
2 changed files with 27 additions and 0 deletions
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9
drivers/video/fbdev/msm/Kconfig
View file

@ -110,4 +110,13 @@ config FB_MSM_MDSS_MDP3
The MDP3 provides support for an older version display controller
included in latest display sub-system, known as MDSS.
config FB_MSM_MDSS_XLOG_DEBUG
depends on FB_MSM_MDSS
bool "Enable MDSS debugging"
---help---
The MDSS debugging provides support to enable display debugging
features to: Dump MDSS registers during driver errors, panic
driver during fatal errors and enable some display-driver logging
into an internal buffer (this avoids logging overhead).
endif

18
drivers/video/fbdev/msm/mdss_debug_xlog.c
View file

@ -21,6 +21,15 @@
#include "mdss_mdp.h"
#include "mdss_debug.h"
#ifdef CONFIG_FB_MSM_MDSS_XLOG_DEBUG
#define XLOG_DEFAULT_ENABLE 1
#else
#define XLOG_DEFAULT_ENABLE 0
#endif
#define XLOG_DEFAULT_PANIC 1
#define XLOG_DEFAULT_REGDUMP 0x2 /* dump in RAM */
#define MDSS_XLOG_ENTRY 256
#define MDSS_XLOG_MAX_DATA 6
#define MDSS_XLOG_BUF_MAX 512
@ -486,5 +495,14 @@ int mdss_create_xlog_debug(struct mdss_debug_data *mdd)
&mdss_dbg_xlog.panic_on_err);
debugfs_create_u32("reg_dump", 0644, mdss_dbg_xlog.xlog,
&mdss_dbg_xlog.enable_reg_dump);
mdss_dbg_xlog.xlog_enable = XLOG_DEFAULT_ENABLE;
mdss_dbg_xlog.panic_on_err = XLOG_DEFAULT_PANIC;
mdss_dbg_xlog.enable_reg_dump = XLOG_DEFAULT_REGDUMP;
pr_info("xlog_status: enable:%d, panic:%d, dump:%d\n",
mdss_dbg_xlog.xlog_enable, mdss_dbg_xlog.panic_on_err,
mdss_dbg_xlog.enable_reg_dump);
return 0;
}