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image_conf, make_scripts_riscv - Delete trailing spaces. Change tabs to 4 space multiples.
.c and .h get tabs expanded to four spaces for consistency, traliing whitespace whacked.
Makefiles do NOT get tabs changed.
135 lines
3.1 KiB
C
135 lines
3.1 KiB
C
/*
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* Copyright (C) 2015-2017 Alibaba Group Holding Limited
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*/
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#include "device/vfs_rtc.h"
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#include "hal/soc/soc.h"
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#include "vfs_err.h"
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/* rtc driver struct */
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const struct file_ops rtc_ops =
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{
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.open = vfs_rtc_open,
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.close = vfs_rtc_close,
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.read = vfs_rtc_read,
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.write = vfs_rtc_write
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};
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int vfs_rtc_open(inode_t *inode, file_t *fp)
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{
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int ret = -1; /* return value */
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rtc_dev_t *rtc_dev = NULL; /* device pointer */
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/* check empty pointer. */
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if ((fp != NULL) && (fp->node != NULL)) {
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/* Initialize if the device is first opened. */
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if (fp->node->refs == 1) {
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/* get the device pointer. */
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rtc_dev = (rtc_dev_t *)(fp->node->i_arg);
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/* init rtc device. */
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ret = hal_rtc_init(rtc_dev);
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} else {
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ret = VFS_SUCCESS;
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}
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} else {
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ret = -EINVAL;
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}
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return ret;
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}
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int vfs_rtc_close(file_t *fp)
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{
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int ret = -1; /* return value */
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rtc_dev_t *rtc_dev = NULL; /* device pointer */
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/* check empty pointer. */
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if ((fp != NULL) && (fp->node != NULL)) {
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/* close device if the device is last closed. */
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if (fp->node->refs == 1) {
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/* get the device pointer. */
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rtc_dev = (rtc_dev_t *)(fp->node->i_arg);
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if (rtc_dev != NULL) {
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/* turns off hardware. */
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ret = hal_rtc_finalize(rtc_dev);
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} else {
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ret = -EINVAL;
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}
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} else {
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ret = VFS_SUCCESS;
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}
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} else {
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ret = -EINVAL;
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}
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return ret;
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}
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ssize_t vfs_rtc_read(file_t *fp, void *buf, size_t nbytes)
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{
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int ret = -1; /* return value */
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rtc_dev_t *rtc_dev = NULL; /* device pointer */
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/* check empty pointer. */
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if ((fp != NULL) && (fp->node != NULL) && (nbytes >= sizeof(rtc_time_t))) {
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/* get the device pointer. */
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rtc_dev = (rtc_dev_t *)(fp->node->i_arg);
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if (rtc_dev != NULL) {
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/* get data from rtc. */
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ret = hal_rtc_get_time(rtc_dev, (rtc_time_t *)buf);
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/* If the data is read correctly the return value is set to nbytes. */
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if (ret == 0) {
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ret = nbytes;
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}
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} else {
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ret = -EINVAL;
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}
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} else {
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ret = -EINVAL;
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}
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return ret;
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}
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ssize_t vfs_rtc_write(file_t *fp, const void *buf, size_t nbytes)
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{
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int ret = -1; /* return value */
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rtc_dev_t *rtc_dev = NULL; /* device pointer */
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/* check empty pointer. */
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if ((fp != NULL) && (fp->node != NULL) && (nbytes >= sizeof(rtc_time_t))) {
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/* get the device pointer. */
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rtc_dev = (rtc_dev_t *)(fp->node->i_arg);
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if (rtc_dev != NULL) {
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/* set rtc time. */
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ret = hal_rtc_set_time(rtc_dev, (const rtc_time_t *)buf);
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/* If the time is set successfully, set the return
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value to nbytes. */
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if (ret == 0) {
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ret = nbytes;
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}
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} else {
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ret = -EINVAL;
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}
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} else {
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ret = -EINVAL;
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}
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return ret;
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}
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