+// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2009 Sergey Kubushyn <ksi@koi8.net>
*
*
* (C) Copyright 2000
* Paolo Scaffardi, AIRVENT SAM s.p.a - RIMINI(ITALY), arsenio@tin.it
- *
- * SPDX-License-Identifier: GPL-2.0+
*/
#include <config.h>
#include <common.h>
+#include <dm.h>
#include <errno.h>
+#include <log.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_SYS_I2C)
+#include <splash.h>
#include <i2c.h>
-#endif
+#include <asm/global_data.h>
+#include <dm/device-internal.h>
DECLARE_GLOBAL_DATA_PTR;
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_STDIO_DEREGISTER
-#define CONFIG_SYS_DEVICE_NULLDEV 1
-#endif
+int stdio_file_to_flags(const int file)
+{
+ switch (file) {
+ case stdin:
+ return DEV_FLAGS_INPUT;
+ case stdout:
+ case stderr:
+ return DEV_FLAGS_OUTPUT;
+ default:
+ return -EINVAL;
+ }
+}
-#ifdef CONFIG_SYS_DEVICE_NULLDEV
+#if CONFIG_IS_ENABLED(SYS_DEVICE_NULLDEV)
static void nulldev_putc(struct stdio_dev *dev, const char c)
{
/* nulldev is empty! */
/* nulldev is empty! */
return 0;
}
-#endif
+
+static void nulldev_register(void)
+{
+ struct stdio_dev dev;
+
+ memset(&dev, '\0', sizeof(dev));
+
+ strcpy(dev.name, "nulldev");
+ dev.flags = DEV_FLAGS_OUTPUT | DEV_FLAGS_INPUT;
+ dev.putc = nulldev_putc;
+ dev.puts = nulldev_puts;
+ dev.getc = nulldev_input;
+ dev.tstc = nulldev_input;
+
+ stdio_register(&dev);
+}
+#else
+static inline void nulldev_register(void) {}
+#endif /* SYS_DEVICE_NULLDEV */
static void stdio_serial_putc(struct stdio_dev *dev, const char c)
{
memset (&dev, 0, sizeof (dev));
strcpy (dev.name, "serial");
- dev.flags = DEV_FLAGS_OUTPUT | DEV_FLAGS_INPUT | DEV_FLAGS_SYSTEM;
+ dev.flags = DEV_FLAGS_OUTPUT | DEV_FLAGS_INPUT;
dev.putc = stdio_serial_putc;
dev.puts = stdio_serial_puts;
dev.getc = stdio_serial_getc;
dev.tstc = stdio_serial_tstc;
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
+ nulldev_register();
}
/**************************************************************************
*/
struct list_head* stdio_get_list(void)
{
- return &(devs.list);
+ return &devs.list;
+}
+
+/**
+ * stdio_probe_device() - Find a device which provides the given stdio device
+ *
+ * This looks for a device of the given uclass which provides a particular
+ * stdio device. It is currently really only useful for UCLASS_VIDEO.
+ *
+ * Ultimately we want to be able to probe a device by its stdio name. At
+ * present devices register in their probe function (for video devices this
+ * is done in vidconsole_post_probe()) and we don't know what name they will
+ * use until they do so.
+ * TODO(sjg@chromium.org): We should be able to determine the name before
+ * probing, and probe the required device.
+ *
+ * @name: stdio device name (e.g. "vidconsole")
+ * id: Uclass ID of device to look for (e.g. UCLASS_VIDEO)
+ * @sdevp: Returns stdout device, if found, else NULL
+ * @return 0 if found, -ENOENT if no device found with that name, other -ve
+ * on other error
+ */
+static int stdio_probe_device(const char *name, enum uclass_id id,
+ struct stdio_dev **sdevp)
+{
+ struct stdio_dev *sdev;
+ struct udevice *dev;
+ int seq, ret;
+
+ *sdevp = NULL;
+ seq = trailing_strtoln(name, NULL);
+ if (seq == -1)
+ seq = 0;
+ ret = uclass_get_device_by_seq(id, seq, &dev);
+ if (ret == -ENODEV)
+ ret = uclass_first_device_err(id, &dev);
+ if (ret) {
+ debug("No %s device for seq %d (%s)\n", uclass_get_name(id),
+ seq, name);
+ return ret;
+ }
+ /* The device should be be the last one registered */
+ sdev = list_empty(&devs.list) ? NULL :
+ list_last_entry(&devs.list, struct stdio_dev, list);
+ if (!sdev || strcmp(sdev->name, name)) {
+ debug("Device '%s' did not register with stdio as '%s'\n",
+ dev->name, name);
+ return -ENOENT;
+ }
+ *sdevp = sdev;
+
+ return 0;
}
-struct stdio_dev* stdio_get_by_name(const char *name)
+struct stdio_dev *stdio_get_by_name(const char *name)
{
struct list_head *pos;
- struct stdio_dev *dev;
+ struct stdio_dev *sdev;
- if(!name)
+ 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;
+ list_for_each(pos, &devs.list) {
+ sdev = list_entry(pos, struct stdio_dev, list);
+ if (strcmp(sdev->name, name) == 0)
+ return sdev;
+ }
+ if (IS_ENABLED(CONFIG_DM_VIDEO)) {
+ /*
+ * We did not find a suitable stdio device. If there is a video
+ * driver with a name starting with 'vidconsole', we can try
+ * probing that in the hope that it will produce the required
+ * stdio device.
+ *
+ * This function is sometimes called with the entire value of
+ * 'stdout', which may include a list of devices separate by
+ * commas. Obviously this is not going to work, so we ignore
+ * that case. The call path in that case is
+ * console_init_r() -> console_search_dev() -> stdio_get_by_name()
+ */
+ if (!strncmp(name, "vidconsole", 10) && !strchr(name, ',') &&
+ !stdio_probe_device(name, UCLASS_VIDEO, &sdev))
+ return sdev;
}
return NULL;
}
-struct stdio_dev* stdio_clone(struct stdio_dev *dev)
+struct stdio_dev *stdio_clone(struct stdio_dev *dev)
{
struct stdio_dev *_dev;
- if(!dev)
+ if (!dev)
return NULL;
_dev = calloc(1, sizeof(struct stdio_dev));
-
- if(!_dev)
+ if (!_dev)
return NULL;
memcpy(_dev, dev, sizeof(struct stdio_dev));
struct stdio_dev *_dev;
_dev = stdio_clone(dev);
- if(!_dev)
+ if (!_dev)
return -ENODEV;
- list_add_tail(&(_dev->list), &(devs.list));
+ list_add_tail(&_dev->list, &devs.list);
if (devp)
*devp = _dev;
return stdio_register_dev(dev, NULL);
}
-/* 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_dev(struct stdio_dev *dev, int force)
{
- int l;
struct list_head *pos;
char temp_names[3][16];
+ int i;
/* get stdio devices (ListRemoveItem changes the dev list) */
- for (l=0 ; l< MAX_FILES; l++) {
- if (stdio_devices[l] == dev) {
+ for (i = 0 ; i < MAX_FILES; i++) {
+ if (stdio_devices[i] == dev) {
if (force) {
- strcpy(temp_names[l], "nulldev");
+ strcpy(temp_names[i], "nulldev");
continue;
}
/* Device is assigned -> report error */
- return -1;
+ return -EBUSY;
}
- memcpy (&temp_names[l][0],
- stdio_devices[l]->name,
- sizeof(temp_names[l]));
+ memcpy(&temp_names[i][0], stdio_devices[i]->name,
+ sizeof(temp_names[i]));
}
- list_del(&(dev->list));
+ list_del(&dev->list);
+ free(dev);
- /* reassign Device list */
- list_for_each(pos, &(devs.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;
+ for (i = 0 ; i < MAX_FILES; i++) {
+ if (strcmp(dev->name, temp_names[i]) == 0)
+ stdio_devices[i] = dev;
}
}
- return 0;
-}
-
-int stdio_deregister(const char *devname, int force)
-{
- struct stdio_dev *dev;
-
- dev = stdio_get_by_name(devname);
- if (!dev) /* device not found */
- return -ENODEV;
-
- return stdio_deregister_dev(dev, force);
+ return 0;
}
-#endif /* CONFIG_SYS_STDIO_DEREGISTER */
int stdio_init_tables(void)
{
#endif /* CONFIG_NEEDS_MANUAL_RELOC */
/* Initialize the list */
- INIT_LIST_HEAD(&(devs.list));
+ INIT_LIST_HEAD(&devs.list);
return 0;
}
int stdio_add_devices(void)
{
-#ifdef CONFIG_SYS_I2C
+ struct udevice *dev;
+ struct uclass *uc;
+ int ret;
+
+ if (IS_ENABLED(CONFIG_DM_KEYBOARD)) {
+ /*
+ * For now we probe all the devices here. At some point this
+ * should be done only when the devices are required - e.g. we
+ * have a list of input devices to start up in the stdin
+ * environment variable. That work probably makes more sense
+ * when stdio itself is converted to driver model.
+ *
+ * TODO(sjg@chromium.org): Convert changing
+ * uclass_first_device() etc. to return the device even on
+ * error. Then we could use that here.
+ */
+ ret = uclass_get(UCLASS_KEYBOARD, &uc);
+ if (ret)
+ return ret;
+
+ /*
+ * Don't report errors to the caller - assume that they are
+ * non-fatal
+ */
+ uclass_foreach_dev(dev, uc) {
+ ret = device_probe(dev);
+ if (ret)
+ printf("Failed to probe keyboard '%s'\n",
+ dev->name);
+ }
+ }
+#if CONFIG_IS_ENABLED(SYS_I2C_LEGACY)
i2c_init_all();
-#else
-#if defined(CONFIG_HARD_I2C)
- i2c_init (CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
-#endif
#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 ();
+ if (IS_ENABLED(CONFIG_DM_VIDEO)) {
+ /*
+ * If the console setting is not in environment variables then
+ * console_init_r() will not be calling iomux_doenv() (which
+ * calls console_search_dev()). So we will not dynamically add
+ * devices by calling stdio_probe_device().
+ *
+ * So just probe all video devices now so that whichever one is
+ * required will be available.
+ */
+ struct udevice *vdev;
+ int ret;
+
+ if (!IS_ENABLED(CONFIG_SYS_CONSOLE_IS_IN_ENV)) {
+ for (ret = uclass_first_device(UCLASS_VIDEO, &vdev);
+ vdev;
+ ret = uclass_next_device(&vdev))
+ ;
+ if (ret)
+ printf("%s: Video device failed (ret=%d)\n",
+ __func__, ret);
+ }
+ if (IS_ENABLED(CONFIG_SPLASH_SCREEN) &&
+ IS_ENABLED(CONFIG_CMD_BMP))
+ splash_display();
+ } else {
+ if (IS_ENABLED(CONFIG_LCD))
+ drv_lcd_init();
+ if (IS_ENABLED(CONFIG_VIDEO) ||
+ IS_ENABLED(CONFIG_CFB_CONSOLE) ||
+ IS_ENABLED(CONFIG_VIDEO_VCXK))
+ drv_video_init();
+ }
+
+#if defined(CONFIG_KEYBOARD) && !defined(CONFIG_DM_KEYBOARD)
+ drv_keyboard_init();
#endif
- drv_system_init ();
- serial_stdio_init ();
+ drv_system_init();
+ serial_stdio_init();
#ifdef CONFIG_USB_TTY
- drv_usbtty_init ();
-#endif
-#ifdef CONFIG_NETCONSOLE
- drv_nc_init ();
+ drv_usbtty_init();
#endif
+ if (IS_ENABLED(CONFIG_NETCONSOLE))
+ drv_nc_init();
#ifdef CONFIG_JTAG_CONSOLE
- drv_jtag_console_init ();
-#endif
-#ifdef CONFIG_CBMEM_CONSOLE
- cbmemc_init();
+ drv_jtag_console_init();
#endif
+ if (IS_ENABLED(CONFIG_CBMEM_CONSOLE))
+ cbmemc_init();
return 0;
}
projects / platform / kernel / u-boot.git / blobdiff