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authorJean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>2009-05-16 12:14:54 +0200
committerWolfgang Denk <wd@denx.de>2009-07-18 00:27:46 +0200
commit52cb4d4fb3487313f5a72ea740f527a4aefaa365 (patch)
treee673bea782668009ec4818c16b159d7cf1b062ba /common/stdio.c
parentf732a7598fa36d48241df20b1a1f4cdbf09f75ee (diff)
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stdio/device: rework function naming convention
So far the console API uses the following naming convention: ======Extract====== typedef struct device_t; int device_register (device_t * dev); int devices_init (void); int device_deregister(char *devname); struct list_head* device_get_list(void); device_t* device_get_by_name(char* name); device_t* device_clone(device_t *dev); ======= which is too generic and confusing. Instead of using device_XX and device_t we change this into stdio_XX and stdio_dev This will also allow to add later a generic device mechanism in order to have support for multiple devices and driver instances. Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Edited commit message. Signed-off-by: Wolfgang Denk <wd@denx.de>
Diffstat (limited to 'common/stdio.c')
-rw-r--r--common/stdio.c251
1 files changed, 251 insertions, 0 deletions
diff --git a/common/stdio.c b/common/stdio.c
new file mode 100644
index 0000000..697df5a
--- /dev/null
+++ b/common/stdio.c
@@ -0,0 +1,251 @@
+/*
+ * (C) Copyright 2000
+ * Paolo Scaffardi, AIRVENT SAM s.p.a - RIMINI(ITALY), arsenio@tin.it
+ *
+ * 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 <config.h>
+#include <common.h>
+#include <stdarg.h>
+#include <malloc.h>
+#include <stdio_dev.h>
+#include <serial.h>
+#ifdef CONFIG_LOGBUFFER
+#include <logbuff.h>
+#endif
+#if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
+#include <i2c.h>
+#endif
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static struct stdio_dev devs;
+struct stdio_dev *stdio_devices[] = { NULL, NULL, NULL };
+char *stdio_names[MAX_FILES] = { "stdin", "stdout", "stderr" };
+
+#if defined(CONFIG_SPLASH_SCREEN) && !defined(CONFIG_SYS_DEVICE_NULLDEV)
+#define CONFIG_SYS_DEVICE_NULLDEV 1
+#endif
+
+
+#ifdef CONFIG_SYS_DEVICE_NULLDEV
+void nulldev_putc(const char c)
+{
+ /* nulldev is empty! */
+}
+
+void nulldev_puts(const char *s)
+{
+ /* nulldev is empty! */
+}
+
+int nulldev_input(void)
+{
+ /* nulldev is empty! */
+ return 0;
+}
+#endif
+
+/**************************************************************************
+ * SYSTEM DRIVERS
+ **************************************************************************
+ */
+
+static void drv_system_init (void)
+{
+ struct stdio_dev dev;
+
+ memset (&dev, 0, sizeof (dev));
+
+ strcpy (dev.name, "serial");
+ dev.flags = DEV_FLAGS_OUTPUT | DEV_FLAGS_INPUT | DEV_FLAGS_SYSTEM;
+#ifdef CONFIG_SERIAL_SOFTWARE_FIFO
+ dev.putc = serial_buffered_putc;
+ dev.puts = serial_buffered_puts;
+ dev.getc = serial_buffered_getc;
+ dev.tstc = serial_buffered_tstc;
+#else
+ dev.putc = serial_putc;
+ dev.puts = serial_puts;
+ dev.getc = serial_getc;
+ dev.tstc = serial_tstc;
+#endif
+
+ stdio_register (&dev);
+
+#ifdef CONFIG_SYS_DEVICE_NULLDEV
+ memset (&dev, 0, sizeof (dev));
+
+ strcpy (dev.name, "nulldev");
+ dev.flags = DEV_FLAGS_OUTPUT | DEV_FLAGS_INPUT | DEV_FLAGS_SYSTEM;
+ dev.putc = nulldev_putc;
+ dev.puts = nulldev_puts;
+ dev.getc = nulldev_input;
+ dev.tstc = nulldev_input;
+
+ stdio_register (&dev);
+#endif
+}
+
+/**************************************************************************
+ * DEVICES
+ **************************************************************************
+ */
+struct list_head* stdio_get_list(void)
+{
+ return &(devs.list);
+}
+
+struct stdio_dev* stdio_get_by_name(char* name)
+{
+ struct list_head *pos;
+ struct stdio_dev *dev;
+
+ if(!name)
+ return NULL;
+
+ list_for_each(pos, &(devs.list)) {
+ dev = list_entry(pos, struct stdio_dev, list);
+ if(strcmp(dev->name, name) == 0)
+ return dev;
+ }
+
+ return NULL;
+}
+
+struct stdio_dev* stdio_clone(struct stdio_dev *dev)
+{
+ struct stdio_dev *_dev;
+
+ if(!dev)
+ return NULL;
+
+ _dev = calloc(1, sizeof(struct stdio_dev));
+
+ if(!_dev)
+ return NULL;
+
+ memcpy(_dev, dev, sizeof(struct stdio_dev));
+ strncpy(_dev->name, dev->name, 16);
+
+ return _dev;
+}
+
+int stdio_register (struct stdio_dev * dev)
+{
+ struct stdio_dev *_dev;
+
+ _dev = stdio_clone(dev);
+ if(!_dev)
+ return -1;
+ list_add_tail(&(_dev->list), &(devs.list));
+ return 0;
+}
+
+/* deregister the device "devname".
+ * returns 0 if success, -1 if device is assigned and 1 if devname not found
+ */
+#ifdef CONFIG_SYS_STDIO_DEREGISTER
+int stdio_deregister(char *devname)
+{
+ int l;
+ struct list_head *pos;
+ struct stdio_dev *dev;
+ char temp_names[3][8];
+
+ dev = stdio_get_by_name(devname);
+
+ if(!dev) /* device not found */
+ return -1;
+ /* get stdio devices (ListRemoveItem changes the dev list) */
+ for (l=0 ; l< MAX_FILES; l++) {
+ if (stdio_devices[l] == dev) {
+ /* Device is assigned -> report error */
+ return -1;
+ }
+ memcpy (&temp_names[l][0],
+ stdio_devices[l]->name,
+ sizeof(stdio_devices[l]->name));
+ }
+
+ list_del(&(dev->list));
+
+ /* reassign Device list */
+ list_for_each(pos, &(devs.list)) {
+ dev = list_entry(pos, struct stdio_dev, list);
+ for (l=0 ; l< MAX_FILES; l++) {
+ if(strcmp(dev->name, temp_names[l]) == 0)
+ stdio_devices[l] = dev;
+ }
+ }
+ return 0;
+}
+#endif /* CONFIG_SYS_STDIO_DEREGISTER */
+
+int stdio_init (void)
+{
+#ifndef CONFIG_ARM /* already relocated for current ARM implementation */
+ ulong relocation_offset = gd->reloc_off;
+ int i;
+
+ /* relocate device name pointers */
+ for (i = 0; i < (sizeof (stdio_names) / sizeof (char *)); ++i) {
+ stdio_names[i] = (char *) (((ulong) stdio_names[i]) +
+ relocation_offset);
+ }
+#endif
+
+ /* Initialize the list */
+ INIT_LIST_HEAD(&(devs.list));
+
+#ifdef CONFIG_ARM_DCC_MULTI
+ drv_arm_dcc_init ();
+#endif
+#if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
+ i2c_init (CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
+#endif
+#ifdef CONFIG_LCD
+ drv_lcd_init ();
+#endif
+#if defined(CONFIG_VIDEO) || defined(CONFIG_CFB_CONSOLE)
+ drv_video_init ();
+#endif
+#ifdef CONFIG_KEYBOARD
+ drv_keyboard_init ();
+#endif
+#ifdef CONFIG_LOGBUFFER
+ drv_logbuff_init ();
+#endif
+ drv_system_init ();
+#ifdef CONFIG_SERIAL_MULTI
+ serial_stdio_init ();
+#endif
+#ifdef CONFIG_USB_TTY
+ drv_usbtty_init ();
+#endif
+#ifdef CONFIG_NETCONSOLE
+ drv_nc_init ();
+#endif
+#ifdef CONFIG_JTAG_CONSOLE
+ drv_jtag_console_init ();
+#endif
+
+ return (0);
+}