artik053: initialize pwm at boot

Initialize PWMs at board_initialize().

Change-Id: Ie399cc97bc2233c17318057594711c3e5c44614b
Signed-off-by: Junhwan Park <junhwan.park@samsung.com>

diff --git a/os/arch/arm/src/artik053/src/Makefile b/os/arch/arm/src/artik053/src/Makefile
index 0c6f5c4..a6ec6be 100644 (file)
--- a/os/arch/arm/src/artik053/src/Makefile
+++ b/os/arch/arm/src/artik053/src/Makefile
@@ -56,7 +56,8 @@
 CFLAGS += -I$(TOPDIR)/sched
 ASRCS =
 CSRCS = artik053_boot.c \
-       artik053_tash.c
+       artik053_tash.c \
+       artik053_pwm.c
 
 ifeq ($(CONFIG_MTD_PROGMEM),y)
 CSRCS += artik053_progmem.c

diff --git a/os/arch/arm/src/artik053/src/artik053_boot.c b/os/arch/arm/src/artik053/src/artik053_boot.c
index 004eda1..0dd2675 100644 (file)
--- a/os/arch/arm/src/artik053/src/artik053_boot.c
+++ b/os/arch/arm/src/artik053/src/artik053_boot.c
@@ -199,6 +199,10 @@ void board_initialize(void)
        slsi_driver_initialize();
 #endif
 
+#ifdef CONFIG_S5J_PWM
+       board_pwm_setup();
+#endif
+
        s5j_gpioinitialize();
 }
 #endif /* CONFIG_BOARD_INITIALIZE */

diff --git a/os/arch/arm/src/artik053/src/artik053_pwm.c b/os/arch/arm/src/artik053/src/artik053_pwm.c
new file mode 100644 (file)
index 0000000..6c355bd
--- /dev/null
+++ b/os/arch/arm/src/artik053/src/artik053_pwm.c
@@ -0,0 +1,101 @@
+/****************************************************************************
+ *
+ * Copyright 2017 Samsung Electronics All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
+ * either express or implied. See the License for the specific
+ * language governing permissions and limitations under the License.
+ *
+ ****************************************************************************/
+/****************************************************************************
+ * arch/arm/src/artik053/src/artik053_pwm.c
+ *
+ *   Copyright (C) 2013-2014 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * The Samsung sample code has a BSD compatible license that requires this
+ * copyright notice:
+ *
+ *   Copyright (c) 2016 Samsung Electronics, Inc.
+ *   All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. 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.
+ * 3. Neither the name NuttX 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.
+ *
+ */
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+#include <tinyara/config.h>
+
+#include <sys/types.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+#include <debug.h>
+
+#include <tinyara/pwm.h>
+
+#include "chip.h"
+#include "s5j_pwm.h"
+
+int board_pwm_setup(void)
+{
+#ifdef CONFIG_S5J_PWM
+       struct pwm_lowerhalf_s *pwm;
+       char path[10];
+       int ret;
+       int i;
+
+       for (i = 0; i < 6; i++) {
+               pwm = s5j_pwminitialize(i);
+               if (!pwm) {
+                       lldbg("Failed to get the S5J PWM lower half\n");
+                       return -ENODEV;
+               }
+
+               /* Register the PWM driver at "/dev/pwmx" */
+               snprintf(path, sizeof(path), "/dev/pwm%d", i);
+               ret = pwm_register(path, pwm);
+               if (ret < 0) {
+                       lldbg("pwm_register failed: %d\n", ret);
+                       return ret;
+               }
+       }
+#endif
+
+       return OK;
+}