msm: camera: common: Improve the CSID logging

Improve CSID irq logging for better debugging.
Add support to dump the hw source clock.

CRs-Fixed: 2808577
Change-Id: I06608588ef7a6e0ebc174a1ba138f6e16a9094f2
Signed-off-by: Jigar Agrawal <jigar@codeaurora.org>

drivers/cam_utils/cam_soc_util.h

@@ -1,6 +1,6 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 /*
- * Copyright (c) 2015-2020, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2015-2021, The Linux Foundation. All rights reserved.
  */
 
 #ifndef _CAM_SOC_UTIL_H_
@@ -160,6 +160,7 @@ struct cam_soc_gpio_data {
  * @clk_level_valid:        Indicates whether corresponding level is valid
  * @scl_clk_count:          Number of scalable clocks present
  * @scl_clk_idx:            Index of scalable clocks
+ * @applied_src_clk_rate    Current clock rate of the core source clk
  * @gpio_data:              Pointer to gpio info
  * @pinctrl_info:           Pointer to pinctrl info
  * @dentry:                 Debugfs entry
@@ -206,6 +207,7 @@ struct cam_hw_soc_info {
 	int32_t                         clk_rate[CAM_MAX_VOTE][CAM_SOC_MAX_CLK];
 	int32_t                         prev_clk_level;
 	int32_t                         src_clk_idx;
+	unsigned long                   applied_src_clk_rate;
 	bool                            clk_level_valid[CAM_MAX_VOTE];
 	int32_t                         scl_clk_count;
 	int32_t                         scl_clk_idx[CAM_SOC_MAX_CLK];
@@ -455,11 +457,12 @@ int cam_soc_util_clk_put(struct clk **clk);
  * @clk:                Clock that needs to be turned ON
  * @clk_name:           Clocks name associated with clk
  * @clk_rate:           Clocks rate associated with clk
+ * @applied_clock_rate  Final Clock rate applied to the clk
  *
  * @return:             Success or failure
  */
 int cam_soc_util_clk_enable(struct clk *clk, const char *clk_name,
-	int32_t clk_rate);
+	int32_t clk_rate, unsigned long *applied_clock_rate);
 
 /**
  * cam_soc_util_set_clk_rate_level()