Patchwork [U-Boot,7/8,v3] TMU: Add u-boot command to read current temp

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Submitter Hatim RV
Date Nov. 8, 2012, 9:14 a.m.
Message ID <1352366100-18727-8-git-send-email-hatim.rv@samsung.com>
Download mbox | patch
Permalink /patch/197815/
State Changes Requested
Delegated to: Minkyu Kang
Headers show

Comments

Hatim RV - Nov. 8, 2012, 9:14 a.m.
From: Alim Akhtar <alim.akhtar@samsung.com>

Adds a new u-boot command to read current temprature from tmu driver.

Signed-off-by: Alim Akhtar <alim.akhtar@samsung.com>
Acked-by: Simon Glass <sjg@chromium.org>
---
Changes since v2:
	- Updated Monitor Commands in README

 README           |    1 +
 common/Makefile  |    1 +
 common/cmd_tmu.c |   51 +++++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 53 insertions(+), 0 deletions(-)
 create mode 100644 common/cmd_tmu.c

Patch

diff --git a/README b/README
index 72b3b67..58ac542 100644
--- a/README
+++ b/README
@@ -3850,6 +3850,7 @@  icache	- enable or disable instruction cache
 dcache	- enable or disable data cache
 reset	- Perform RESET of the CPU
 echo	- echo args to console
+tmu	- measurement values by Thermal Management Unit
 version - print monitor version
 help	- print online help
 ?	- alias for 'help'
diff --git a/common/Makefile b/common/Makefile
index dca2f53..b56ffa2 100644
--- a/common/Makefile
+++ b/common/Makefile
@@ -159,6 +159,7 @@  COBJS-$(CONFIG_CMD_STRINGS) += cmd_strings.o
 COBJS-$(CONFIG_CMD_TERMINAL) += cmd_terminal.o
 COBJS-$(CONFIG_CMD_TIME) += cmd_time.o
 COBJS-$(CONFIG_SYS_HUSH_PARSER) += cmd_test.o
+COBJS-$(CONFIG_CMD_TMU) += cmd_tmu.o
 COBJS-$(CONFIG_CMD_TPM) += cmd_tpm.o
 COBJS-$(CONFIG_CMD_TSI148) += cmd_tsi148.o
 COBJS-$(CONFIG_CMD_UBI) += cmd_ubi.o
diff --git a/common/cmd_tmu.c b/common/cmd_tmu.c
new file mode 100644
index 0000000..7fbf845
--- /dev/null
+++ b/common/cmd_tmu.c
@@ -0,0 +1,51 @@ 
+/*
+ * Copyright (C) 2012 Samsung Electronics
+ * Alim Akhtar <alim.akhtar@samsung.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <command.h>
+#include <tmu.h>
+
+int do_tmu(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+	int cur_temp;
+
+	if (argc < 2)
+		return CMD_RET_USAGE;
+
+	if (strcmp(argv[1], "curtemp") == 0) {
+		if (tmu_monitor(&cur_temp) == -1)
+			printf("TMU is in unknown state, temperature is invalid \n");
+		else
+			printf("Current temperature: %u degrees Celsius \n", cur_temp);
+	} else {
+		return CMD_RET_USAGE;
+	}
+
+	return 0;
+}
+
+U_BOOT_CMD(
+	tmu, 2, 1, do_tmu,
+	"Thermal Management Unit\n",
+	"curtemp - show current CPU temperature in degrees Celsius\n"
+);