X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=common%2Fstdio.c;h=54ecc9b53db9c2354d3b2f30c2517c58c7c77891;hb=2373cba3d2d5d182378c0259cf609438355bfece;hp=7252bab1f6c13283e80f2a05df59cf276fbb19b1;hpb=6905f4d3c7be46fed4859f51f0a8f9a1107c22e7;p=oweals%2Fu-boot.git diff --git a/common/stdio.c b/common/stdio.c index 7252bab1f6..54ecc9b53d 100644 --- a/common/stdio.c +++ b/common/stdio.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * Copyright (C) 2009 Sergey Kubushyn * @@ -5,8 +6,6 @@ * * (C) Copyright 2000 * Paolo Scaffardi, AIRVENT SAM s.p.a - RIMINI(ITALY), arsenio@tin.it - * - * SPDX-License-Identifier: GPL-2.0+ */ #include @@ -17,11 +16,9 @@ #include #include #include -#ifdef CONFIG_LOGBUFFER -#include -#endif +#include -#if defined(CONFIG_HARD_I2C) || defined(CONFIG_SYS_I2C) +#if defined(CONFIG_SYS_I2C) #include #endif @@ -37,7 +34,7 @@ char *stdio_names[MAX_FILES] = { "stdin", "stdout", "stderr" }; #define CONFIG_SYS_DEVICE_NULLDEV 1 #endif -#ifdef CONFIG_SYS_STDIO_DEREGISTER +#if CONFIG_IS_ENABLED(SYS_STDIO_DEREGISTER) #define CONFIG_SYS_DEVICE_NULLDEV 1 #endif @@ -121,19 +118,88 @@ struct list_head* stdio_get_list(void) 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; } @@ -177,7 +243,7 @@ int stdio_register(struct stdio_dev *dev) /* deregister the device "devname". * returns 0 if success, -1 if device is assigned and 1 if devname not found */ -#ifdef CONFIG_SYS_STDIO_DEREGISTER +#if CONFIG_IS_ENABLED(SYS_STDIO_DEREGISTER) int stdio_deregister_dev(struct stdio_dev *dev, int force) { int l; @@ -224,7 +290,7 @@ int stdio_deregister(const char *devname, int force) return stdio_deregister_dev(dev, force); } -#endif /* CONFIG_SYS_STDIO_DEREGISTER */ +#endif /* CONFIG_IS_ENABLED(SYS_STDIO_DEREGISTER) */ int stdio_init_tables(void) { @@ -277,12 +343,22 @@ int stdio_add_devices(void) #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_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; @@ -290,6 +366,10 @@ int stdio_add_devices(void) ; 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 (); @@ -300,9 +380,6 @@ int stdio_add_devices(void) #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 ();