[PATCH v4 2/2] staging: media: atomisp: Remove dbg_level and dbg_func module parameters

[Prajval Chaudhary <prajvalchaudhari733@gmail.com>]

Remove the 'dbg_level' and 'dbg_func' module parameters to align the
driver's debug facility with standard Linux kernel APIs (printk/vprintk).

The internal logic relying on custom debug parameters has been updated
so that message logging and function tracing no longer depend on exposed
userspace module parameters.

Signed-off-by: Prajval Chaudhary <prajvalchaudhari733@gmail.com>
---
 drivers/staging/media/atomisp/pci/atomisp_common.h   |  2 --
 .../staging/media/atomisp/pci/atomisp_compat_css20.c | 12 +++---------
 drivers/staging/media/atomisp/pci/atomisp_v4l2.c     |  7 -------
 .../pci/runtime/debug/interface/ia_css_debug.h       |  7 +++----
 .../atomisp/pci/runtime/debug/src/ia_css_debug.c     |  4 ++--
 5 files changed, 8 insertions(+), 24 deletions(-)

diff --git a/drivers/staging/media/atomisp/pci/atomisp_common.h b/drivers/staging/media/atomisp/pci/atomisp_common.h
index 7c6c0124ff72..aa230c3708dd 100644
--- a/drivers/staging/media/atomisp/pci/atomisp_common.h
+++ b/drivers/staging/media/atomisp/pci/atomisp_common.h
@@ -20,8 +20,6 @@
 
 #include "ia_css.h"
 
-extern int dbg_level;
-extern int dbg_func;
 extern const int pad_w;
 extern const int pad_h;
 
diff --git a/drivers/staging/media/atomisp/pci/atomisp_compat_css20.c b/drivers/staging/media/atomisp/pci/atomisp_compat_css20.c
index ea49ebe2da5c..647f6e7e2455 100644
--- a/drivers/staging/media/atomisp/pci/atomisp_compat_css20.c
+++ b/drivers/staging/media/atomisp/pci/atomisp_compat_css20.c
@@ -784,7 +784,7 @@ int atomisp_css_load_firmware(struct atomisp_device *isp)
 	isp->css_env.isp_css_env.hw_access_env.load = atomisp_css2_hw_load;
 	isp->css_env.isp_css_env.hw_access_env.store = atomisp_css2_hw_store;
 
-	__set_css_print_env(isp, dbg_func);
+	__set_css_print_env(isp, 1);
 
 	isp->css_env.isp_css_env.print_env.error_print = atomisp_vprintk;
 
@@ -3372,18 +3372,12 @@ void atomisp_css_set_isp_config_applied_frame(struct atomisp_sub_device *asd,
 
 int atomisp_get_css_dbgfunc(void)
 {
-	return dbg_func;
+	return 1;
 }
 
 int atomisp_set_css_dbgfunc(struct atomisp_device *isp, int opt)
 {
-	int ret;
-
-	ret = __set_css_print_env(isp, opt);
-	if (ret == 0)
-		dbg_func = opt;
-
-	return ret;
+	return __set_css_print_env(isp, opt);
 }
 
 void atomisp_en_dz_capt_pipe(struct atomisp_sub_device *asd, bool enable)
diff --git a/drivers/staging/media/atomisp/pci/atomisp_v4l2.c b/drivers/staging/media/atomisp/pci/atomisp_v4l2.c
index d117fea2860c..55b3d4d3d6ad 100644
--- a/drivers/staging/media/atomisp/pci/atomisp_v4l2.c
+++ b/drivers/staging/media/atomisp/pci/atomisp_v4l2.c
@@ -45,15 +45,8 @@
 #define CSTATE_EXIT_LATENCY_C1  1
 
 /* cross component debug message flag */
-int dbg_level;
-module_param(dbg_level, int, 0644);
-MODULE_PARM_DESC(dbg_level, "debug message level (default:0)");
 
 /* log function switch */
-int dbg_func = 1;
-module_param(dbg_func, int, 0644);
-MODULE_PARM_DESC(dbg_func,
-		 "log function switch non/printk (default:printk)");
 
 /*
  * Set to 16x16 since this is the amount of lines and pixels the sensor
diff --git a/drivers/staging/media/atomisp/pci/runtime/debug/interface/ia_css_debug.h b/drivers/staging/media/atomisp/pci/runtime/debug/interface/ia_css_debug.h
index 2d0e906530af..029adbdca945 100644
--- a/drivers/staging/media/atomisp/pci/runtime/debug/interface/ia_css_debug.h
+++ b/drivers/staging/media/atomisp/pci/runtime/debug/interface/ia_css_debug.h
@@ -8,7 +8,7 @@
 #define _IA_CSS_DEBUG_H_
 
 /*! \file */
-
+#include <linux/printk.h>
 #include <type_support.h>
 #include <linux/stdarg.h>
 #include <linux/bits.h>
@@ -39,7 +39,6 @@
 #define IA_CSS_DEBUG_INFO    9
 
 /* Global variable which controls the verbosity levels of the debug tracing */
-extern int dbg_level;
 
 /*! @brief Enum defining the different isp parameters to dump.
  *  Values can be combined to dump a combination of sets.
@@ -125,8 +124,8 @@ static inline void __printf(2, 0) ia_css_debug_vdtrace(unsigned int level,
 						       const char *fmt,
 						       va_list args)
 {
-	if (dbg_level >= level)
-		sh_css_vprint(fmt, args);
+	if (level <= IA_CSS_DEBUG_WARNING)
+		vprintk(fmt, args);
 }
 
 __printf(2, 3) void ia_css_debug_dtrace(unsigned int level,
diff --git a/drivers/staging/media/atomisp/pci/runtime/debug/src/ia_css_debug.c b/drivers/staging/media/atomisp/pci/runtime/debug/src/ia_css_debug.c
index 5113aa5973f3..86b2cca2f441 100644
--- a/drivers/staging/media/atomisp/pci/runtime/debug/src/ia_css_debug.c
+++ b/drivers/staging/media/atomisp/pci/runtime/debug/src/ia_css_debug.c
@@ -135,13 +135,13 @@ void ia_css_debug_dtrace(unsigned int level, const char *fmt, ...)
 
 void ia_css_debug_set_dtrace_level(const unsigned int trace_level)
 {
-	dbg_level = trace_level;
+	/* Trace level is now controlled dynamically via Linux kernel dynamic debug facility */
 	return;
 }
 
 unsigned int ia_css_debug_get_dtrace_level(void)
 {
-	return dbg_level;
+	return 0;
 }
 
 static const char *debug_stream_format2str(const enum atomisp_input_format
-- 
2.34.1