[AM335X][PRCM] Add prcm dump support

Add functions to dump each prm and cm module according to power
domain. Option to dump all prcm registers. Although not technically a
power domain, prcm device registers can also be dumped.

Signed-off-by: Gilberto Rodriguez <gilrod@ti.com>
Signed-off-by: Nishanth Menon <nm@ti.com>

Makefile

@@ -268,6 +268,7 @@ AM335XSOURCES=\
 		arch/arm/mach-omap/am335x/prcm/cm_am335x.c\
 		arch/arm/mach-omap/am335x/prcm/prm_am335x-defs.c\
 		arch/arm/mach-omap/am335x/prcm/prm_am335x.c\
+		arch/arm/mach-omap/am335x/prcm/prcm_am335x.c\
 
 AM335XOBJECTS=	$(AM335XSOURCES:.c=.o)
 

arch/arm/mach-omap/am335x/help_am335x.c

@@ -78,4 +78,12 @@ void help_am335x(help_category cat, char *context)
 		printf("\n\tomapconf dump emif\n");
 		printf("\t    Dump EMIF4D registers to stdout\n");
 	}
+
+	if((cat == HELP_ALL) || (cat == HELP_PRCM)) {
+		printf("\n\tomapconf dump prcm [<pwrdm>]\n");
+		printf("\t    Dump PRCM Registers related to <pwrdm> power "
+			"domain ('all' assumed if omitted).\n");
+		printf("\t    Support <pwrdm>: all, dev, efuse, gfx, mpu, per, "
+			"rtc, wkup\n");
+	}
 }

arch/arm/mach-omap/am335x/main_am335x.c

@@ -49,6 +49,7 @@
 #include <lib.h>
 #include <main_am335x.h>
 #include <opp.h>
+#include <prcm_am335x.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -88,7 +89,14 @@ int main_am335x_dump(int argc, char *argv[])
 			return emif_am335x_dump(stdout, EMIF_AM335X_EMIF4D);
 		else
 			return err_arg_too_many_msg_show(HELP_EMIF);
-	} else {
+	} else if (strcmp(argv[0], "prcm") == 0) {
+		if (argc == 1)
+			return prcm_am335x_dump(NULL);
+		else if (argc == 2)
+			return prcm_am335x_dump(argv[1]);
+		else
+			return err_arg_too_many_msg_show(HELP_PRCM);
+	}  else {
 		return err_unknown_argument_msg_show(argv[0]);
 	}
 }
@@ -138,7 +146,13 @@ static int main_am335x_legacy(int argc, char*argv[])
 {
 	int ret;
 
-	if (strcmp(argv[0], "ctt") == 0) {
+	if ((argc == 2) && (strcmp(argv[0], "prcm") == 0) &&
+		(strcmp(argv[1], "dump") == 0)) {
+		ret = prcm_am335x_dump(NULL);
+	} else if ((argc == 3) && (strcmp(argv[0], "prcm") == 0) &&
+		(strcmp(argv[1], "dump") == 0)) {
+		ret = prcm_am335x_dump(argv[2]);
+	} else if (strcmp(argv[0], "ctt") == 0) {
 		ret = ctt_am335x_main(argc - 1, argv + 1);
 	} else {
 		ret = err_unknown_argument_msg_show(argv[0]);

arch/arm/mach-omap/am335x/prcm/prcm_am335x.c

@@ -0,0 +1,254 @@
+/*
+ *
+ * @Component			OMAPCONF
+ * @Filename			prcm_am335x.c
+ * @Description			OMAPCONF PRCM AM335X Main file
+ * @Author			Gilberto Rodriguez <gilrod@ti.com>
+ * @Date			2014
+ * @Copyright			Texas Instruments Incorporated
+ *
+ *
+ * Copyright (C) 2014 Texas Instruments Incorporated - http://www.ti.com/
+ *
+ *
+ *  Redistribution and use in source and binary forms, with or without
+ *  modification, are permitted provided that the following conditions
+ *  are met:
+ *
+ *    Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ *    Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the
+ *    distribution.
+ *
+ *    Neither the name of Texas Instruments Incorporated nor the names of
+ *    its contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ *  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ *  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ *  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ *  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ *  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ *  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ *  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ *  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+
+#include <clockdomain.h>
+#include <cm_am335x.h>
+#include <cpuinfo.h>
+#include <help.h>
+#include <lib.h>
+#include <module.h>
+#include <powerdomain.h>
+#include <prcm_am335x.h>
+#include <prm_am335x.h>
+#include <string.h>
+
+
+#ifdef PRCM_AM335X_DEBUG
+#define dprintf(format, ...)	 printf(format, ## __VA_ARGS__)
+#else
+#define dprintf(format, ...)
+#endif
+
+
+/* ------------------------------------------------------------------------*//**
+ * @FUNCTION		_prcm_am335x_wkup_dump
+ * @BRIEF		dump WKUP PRCM registers and pretty-print it
+ * @RETURNS		0 in case of success
+ *			OMAPCONF_ERR_CPU
+ *			OMAPCONF_ERR_ARG
+ *			OMAPCONF_ERR_REG_ACCESS
+ * @param[in,out]	stream: output stream
+ * @DESCRIPTION		dump WKUP PRCM registers and pretty-print it
+ *//*------------------------------------------------------------------------ */
+static inline int _prcm_am335x_wkup_dump(FILE *stream)
+{
+	int ret;
+
+	ret = prm_am335x_dump(stream, PRM_AM335X_PRM_WKUP);
+	if (ret != 0)
+		return ret;
+	return cm_am335x_dump(stream, CM_AM335X_CM_WKUP);
+}
+
+
+/* ------------------------------------------------------------------------*//**
+ * @FUNCTION		_prcm_am335x_mpu_dump
+ * @BRIEF		dump MPU PRCM registers and pretty-print it
+ * @RETURNS		0 in case of success
+ *			OMAPCONF_ERR_CPU
+ *			OMAPCONF_ERR_ARG
+ *			OMAPCONF_ERR_REG_ACCESS
+ * @param[in,out]	stream: output stream
+ * @DESCRIPTION		dump MPU PRCM registers and pretty-print it
+ *//*------------------------------------------------------------------------ */
+static inline int _prcm_am335x_mpu_dump(FILE *stream)
+{
+	int ret;
+
+	ret = prm_am335x_dump(stream, PRM_AM335X_PRM_MPU);
+	if (ret != 0)
+		return ret;
+	return cm_am335x_dump(stream, CM_AM335X_CM_MPU);
+}
+
+
+/* ------------------------------------------------------------------------*//**
+ * @FUNCTION		_prcm_am335x_gfx_dump
+ * @BRIEF		dump GFX PRCM registers and pretty-print it
+ * @RETURNS		0 in case of success
+ *			OMAPCONF_ERR_CPU
+ *			OMAPCONF_ERR_ARG
+ *			OMAPCONF_ERR_REG_ACCESS
+ * @param[in,out]	stream: output stream
+ * @DESCRIPTION		dump GFX PRCM registers and pretty-print it
+ *//*------------------------------------------------------------------------ */
+static inline int _prcm_am335x_gfx_dump(FILE *stream)
+{
+	int ret;
+
+	ret = prm_am335x_dump(stream, PRM_AM335X_PRM_GFX);
+	if (ret != 0)
+		return ret;
+	return cm_am335x_dump(stream, CM_AM335X_CM_GFX);
+}
+
+
+/* ------------------------------------------------------------------------*//**
+ * @FUNCTION		_prcm_am335x_per_dump
+ * @BRIEF		dump PER PRCM registers and pretty-print it
+ * @RETURNS		0 in case of success
+ *			OMAPCONF_ERR_CPU
+ *			OMAPCONF_ERR_ARG
+ *			OMAPCONF_ERR_REG_ACCESS
+ * @param[in,out]	stream: output stream
+ * @DESCRIPTION		dump PER PRCM registers and pretty-print it
+ *//*------------------------------------------------------------------------ */
+static inline int _prcm_am335x_per_dump(FILE *stream)
+{
+	int ret;
+
+	ret = prm_am335x_dump(stream, PRM_AM335X_PRM_PER);
+	if (ret != 0)
+		return ret;
+	return cm_am335x_dump(stream, CM_AM335X_CM_PER);
+}
+
+
+/* ------------------------------------------------------------------------*//**
+ * @FUNCTION		_prcm_am335x_rtc_dump
+ * @BRIEF		dump RTC PRCM registers and pretty-print it
+ * @RETURNS		0 in case of success
+ *			OMAPCONF_ERR_CPU
+ *			OMAPCONF_ERR_ARG
+ *			OMAPCONF_ERR_REG_ACCESS
+ * @param[in,out]	stream: output stream
+ * @DESCRIPTION		dump RTC PRCM registers and pretty-print it
+ *//*------------------------------------------------------------------------ */
+static inline int _prcm_am335x_rtc_dump(FILE *stream)
+{
+	int ret;
+
+	ret = prm_am335x_dump(stream, PRM_AM335X_PRM_RTC);
+	if (ret != 0)
+		return ret;
+	return cm_am335x_dump(stream, CM_AM335X_CM_RTC);
+}
+
+
+/* ------------------------------------------------------------------------*//**
+ * @FUNCTION		_prcm_am335x_efuse_dump
+ * @BRIEF		dump efuse PRCM registers and pretty-print it
+ * @RETURNS		0 in case of success
+ *			OMAPCONF_ERR_CPU
+ *			OMAPCONF_ERR_ARG
+ *			OMAPCONF_ERR_REG_ACCESS
+ * @param[in,out]	stream: output stream
+ * @DESCRIPTION		dump MPU PRCM registers and pretty-print it
+ *//*------------------------------------------------------------------------ */
+static inline int _prcm_am335x_efuse_dump(FILE *stream)
+{
+	int ret;
+
+	ret = prm_am335x_dump(stream, PRM_AM335X_PRM_CEFUSE);
+	if (ret != 0)
+		return ret;
+	return cm_am335x_dump(stream, CM_AM335X_CM_CEFUSE);
+}
+
+
+/* ------------------------------------------------------------------------*//**
+ * @FUNCTION		_prcm_am335x_dev_dump
+ * @BRIEF		dump DEVICE PRCM registers and pretty-print it
+ * @RETURNS		0 in case of success
+ *			OMAPCONF_ERR_CPU
+ *			OMAPCONF_ERR_ARG
+ *			OMAPCONF_ERR_REG_ACCESS
+ * @param[in,out]	stream: output stream
+ * @DESCRIPTION		dump DEVICE PRCM registers and pretty-print it
+ *//*------------------------------------------------------------------------ */
+static inline int _prcm_am335x_dev_dump(FILE *stream)
+{
+	int ret;
+
+	ret = prm_am335x_dump(stream, PRM_AM335X_PRM_DEVICE);
+	if (ret != 0)
+		return ret;
+	return cm_am335x_dump(stream, CM_AM335X_CM_DEVICE);
+}
+
+
+/* ------------------------------------------------------------------------*//**
+ * @FUNCTION		prcm_am335x_dump
+ * @BRIEF		dump (formated in table) PRCM registers related to power
+ *			domain provided in string s.
+ * @RETURNS		0 in case of success
+ *			OMAPCONF_ERR_CPU
+ *			OMAPCONF_ERR_ARG
+ *			OMAPCONF_ERR_REG_ACCESS
+ * @param[in]		s: power domain
+ * @DESCRIPTION		dump (formated in table) PRCM registers related to power
+ *			domain provided in string s.
+ *//*------------------------------------------------------------------------ */
+int prcm_am335x_dump(char *s)
+{
+	int ret = 0;
+
+	if ((s == NULL) || (strcmp(s, "all") == 0)) {
+		/* ALL */
+		ret = _prcm_am335x_per_dump(stdout);
+		ret |= _prcm_am335x_wkup_dump(stdout);
+		ret |= _prcm_am335x_mpu_dump(stdout);
+		ret |= _prcm_am335x_dev_dump(stdout);
+		ret |= _prcm_am335x_rtc_dump(stdout);
+		ret |= _prcm_am335x_gfx_dump(stdout);
+		ret |= _prcm_am335x_efuse_dump(stdout);
+		return ret;
+	} else if (strcmp(s, "wkup") == 0) {
+		return _prcm_am335x_wkup_dump(stdout);
+	} else if (strcmp(s, "mpu") == 0) {
+		return _prcm_am335x_mpu_dump(stdout);
+	} else if (strcmp(s, "gfx") == 0) {
+		return _prcm_am335x_gfx_dump(stdout);
+	} else if (strcmp(s, "per") == 0) {
+		return _prcm_am335x_per_dump(stdout);
+	} else if (strcmp(s, "rtc") == 0) {
+		return _prcm_am335x_rtc_dump(stdout);
+	} else if (strcmp(s, "efuse") == 0) {
+		return _prcm_am335x_efuse_dump(stdout);
+	} else if (strcmp(s, "dev") == 0) {
+		return _prcm_am335x_dev_dump(stdout);
+	} else {
+		return err_arg_msg_show(HELP_PRCM);
+	}
+}

arch/arm/mach-omap/am335x/prcm/prcm_am335x.h

@@ -0,0 +1,55 @@
+/*
+ *
+ * @Component			OMAPCONF
+ * @Filename			prcm_am335x.h
+ * @Description			OMAPCONF PRCM AM335X Main file
+ * @Author			Gilberto Rodriguez <gilrod@ti.com>
+ * @Date			2014
+ * @Copyright			Texas Instruments Incorporated
+ *
+ *
+ * Copyright (C) 2014 Texas Instruments Incorporated - http://www.ti.com/
+ *
+ *
+ *  Redistribution and use in source and binary forms, with or without
+ *  modification, are permitted provided that the following conditions
+ *  are met:
+ *
+ *    Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ *    Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the
+ *    distribution.
+ *
+ *    Neither the name of Texas Instruments Incorporated nor the names of
+ *    its contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ *  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ *  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ *  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ *  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ *  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ *  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ *  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ *  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+
+#ifndef __PRCM_AM335X_H__
+#define __PRCM_AM335X_H__
+
+
+#include <stdio.h>
+
+
+int prcm_am335x_dump(char *s);
+
+
+#endif