clk: qcom: gdsc-regulator: Add snapshot from msm-5.15

Add gdsc-regulator snapshot from msm-5.15 commit 123f6f081248 ("Merge
"spi: spi-msm-geni: clear qn_err flag before transfer"").

Change-Id: I4d8989102564d0a6101bb54eb10055407531d61f
Signed-off-by: Mike Tipton <quic_mdtipton@quicinc.com>

drivers/clk/qcom/Kconfig

@@ -689,4 +689,13 @@ config CLK_GFM_LPASS_SM8250
 	  Support for the Glitch Free Mux (GFM) Low power audio
           subsystem (LPASS) clocks found on SM8250 SoCs.
 
+config QCOM_GDSC_REGULATOR
+	tristate "GDSC regulator driver"
+	depends on COMMON_CLK_QCOM
+	help
+	  This driver supports globally distributed switch controller (GDSC)
+	  devices in regulator framework.
+	  Say Y if you want to support clients using regulator framework APIs
+	  to control GDSCs.
+
 endif

drivers/clk/qcom/Makefile

@@ -19,6 +19,8 @@ clk-qcom-y += reset.o
 clk-qcom-$(CONFIG_QCOM_GDSC) += gdsc.o
 obj-$(CONFIG_COMMON_CLK_QCOM) += clk-dummy.o
 
+obj-$(CONFIG_QCOM_GDSC_REGULATOR) += gdsc-regulator.o
+
 # Keep alphabetically sorted by config
 obj-$(CONFIG_APQ_GCC_8084) += gcc-apq8084.o
 obj-$(CONFIG_APQ_MMCC_8084) += mmcc-apq8084.o

drivers/clk/qcom/gdsc-debug.h

@@ -0,0 +1,16 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (c) 2021, The Linux Foundation. All rights reserved.
+ */
+
+#ifndef __QCOM_GDSC_DEBUG_H__
+#define __QCOM_GDSC_DEBUG_H__
+
+#if IS_ENABLED(CONFIG_QCOM_GDSC_REGULATOR)
+void gdsc_debug_print_regs(struct regulator *regulator);
+#else
+static inline void gdsc_debug_print_regs(struct regulator *regulator)
+{ }
+#endif
+
+#endif  /* __QCOM_GDSC_DEBUG_H__ */