+// 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 <stdarg.h>
#include <malloc.h>
#include <stdio_dev.h>
#include <serial.h>
-#ifdef CONFIG_LOGBUFFER
-#include <logbuff.h>
-#endif
+#include <splash.h>
-#if defined(CONFIG_HARD_I2C) || defined(CONFIG_SYS_I2C)
+#if defined(CONFIG_SYS_I2C)
#include <i2c.h>
#endif
+#include <dm/device-internal.h>
+
DECLARE_GLOBAL_DATA_PTR;
static struct stdio_dev devs;
#define CONFIG_SYS_DEVICE_NULLDEV 1
#endif
+#if CONFIG_IS_ENABLED(SYS_STDIO_DEREGISTER)
+#define CONFIG_SYS_DEVICE_NULLDEV 1
+#endif
#ifdef CONFIG_SYS_DEVICE_NULLDEV
-void nulldev_putc(const char c)
+static void nulldev_putc(struct stdio_dev *dev, const char c)
{
/* nulldev is empty! */
}
-void nulldev_puts(const char *s)
+static void nulldev_puts(struct stdio_dev *dev, const char *s)
{
/* nulldev is empty! */
}
-int nulldev_input(void)
+static int nulldev_input(struct stdio_dev *dev)
{
/* nulldev is empty! */
return 0;
}
#endif
+static void stdio_serial_putc(struct stdio_dev *dev, const char c)
+{
+ serial_putc(c);
+}
+
+static void stdio_serial_puts(struct stdio_dev *dev, const char *s)
+{
+ serial_puts(s);
+}
+
+static int stdio_serial_getc(struct stdio_dev *dev)
+{
+ return serial_getc();
+}
+
+static int stdio_serial_tstc(struct stdio_dev *dev)
+{
+ return serial_tstc();
+}
+
/**************************************************************************
* SYSTEM DRIVERS
**************************************************************************
memset (&dev, 0, sizeof (dev));
strcpy (dev.name, "serial");
- dev.flags = DEV_FLAGS_OUTPUT | DEV_FLAGS_INPUT | DEV_FLAGS_SYSTEM;
- dev.putc = serial_putc;
- dev.puts = serial_puts;
- dev.getc = serial_getc;
- dev.tstc = serial_tstc;
+ 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.flags = DEV_FLAGS_OUTPUT | DEV_FLAGS_INPUT;
dev.putc = nulldev_putc;
dev.puts = nulldev_puts;
dev.getc = nulldev_input;
return &(devs.list);
}
-struct stdio_dev* stdio_get_by_name(const char *name)
+#ifdef CONFIG_DM_VIDEO
+/**
+ * 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;
+}
+#endif
+
+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;
+ sdev = list_entry(pos, struct stdio_dev, list);
+ if (strcmp(sdev->name, name) == 0)
+ return sdev;
}
+#ifdef 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() -> search_device() ->
+ * stdio_get_by_name().
+ */
+ if (!strncmp(name, "vidconsole", 10) && !strchr(name, ',') &&
+ !stdio_probe_device(name, UCLASS_VIDEO, &sdev))
+ return sdev;
+#endif
return NULL;
}
return _dev;
}
-int stdio_register (struct stdio_dev * dev)
+int stdio_register_dev(struct stdio_dev *dev, struct stdio_dev **devp)
{
struct stdio_dev *_dev;
_dev = stdio_clone(dev);
if(!_dev)
- return -1;
+ return -ENODEV;
list_add_tail(&(_dev->list), &(devs.list));
+ if (devp)
+ *devp = _dev;
+
return 0;
}
+int stdio_register(struct stdio_dev *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(const char *devname)
+#if CONFIG_IS_ENABLED(SYS_STDIO_DEREGISTER)
+int stdio_deregister_dev(struct stdio_dev *dev, int force)
{
int l;
struct list_head *pos;
- struct stdio_dev *dev;
char temp_names[3][16];
- 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) {
+ if (force) {
+ strcpy(temp_names[l], "nulldev");
+ continue;
+ }
/* Device is assigned -> report error */
return -1;
}
}
list_del(&(dev->list));
+ free(dev);
/* reassign Device list */
list_for_each(pos, &(devs.list)) {
}
return 0;
}
-#endif /* CONFIG_SYS_STDIO_DEREGISTER */
-int stdio_init (void)
+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);
+}
+#endif /* CONFIG_IS_ENABLED(SYS_STDIO_DEREGISTER) */
+
+int stdio_init_tables(void)
{
#if defined(CONFIG_NEEDS_MANUAL_RELOC)
/* already relocated for current ARM implementation */
/* Initialize the list */
INIT_LIST_HEAD(&(devs.list));
-#ifdef CONFIG_ARM_DCC
- drv_arm_dcc_init ();
+ return 0;
+}
+
+int stdio_add_devices(void)
+{
+#ifdef CONFIG_DM_KEYBOARD
+ struct udevice *dev;
+ struct uclass *uc;
+ int ret;
+
+ /*
+ * 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);
+ }
#endif
#ifdef CONFIG_SYS_I2C
i2c_init_all();
#else
-#if defined(CONFIG_HARD_I2C)
- i2c_init (CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
#endif
-#endif
-#ifdef CONFIG_LCD
+#ifdef CONFIG_DM_VIDEO
+ /*
+ * If the console setting is not in environment variables then
+ * console_init_r() will not be calling iomux_doenv() (which calls
+ * search_device()). 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.
+ */
+#ifndef CONFIG_SYS_CONSOLE_IS_IN_ENV
+ struct udevice *vdev;
+# ifndef CONFIG_DM_KEYBOARD
+ int ret;
+# endif
+
+ 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);
+#endif /* !CONFIG_SYS_CONSOLE_IS_IN_ENV */
+#if defined(CONFIG_SPLASH_SCREEN) && defined(CONFIG_CMD_BMP)
+ splash_display();
+#endif /* CONFIG_SPLASH_SCREEN && CONFIG_CMD_BMP */
+#else
+# if defined(CONFIG_LCD)
drv_lcd_init ();
-#endif
-#if defined(CONFIG_VIDEO) || defined(CONFIG_CFB_CONSOLE)
+# endif
+# if defined(CONFIG_VIDEO) || defined(CONFIG_CFB_CONSOLE)
drv_video_init ();
-#endif
-#ifdef CONFIG_KEYBOARD
+# endif
+#endif /* CONFIG_DM_VIDEO */
+#if defined(CONFIG_KEYBOARD) && !defined(CONFIG_DM_KEYBOARD)
drv_keyboard_init ();
-#endif
-#ifdef CONFIG_LOGBUFFER
- drv_logbuff_init ();
#endif
drv_system_init ();
serial_stdio_init ();
#ifdef CONFIG_CBMEM_CONSOLE
cbmemc_init();
#endif
- return (0);
+
+ return 0;
+}
+
+int stdio_init(void)
+{
+ stdio_init_tables();
+ stdio_add_devices();
+
+ return 0;
}
projects / oweals / u-boot.git / blobdiff