brcm2708: rename target to bcm27xx

This change makes the names of Broadcom targets consistent by using
the common notation based on SoC/CPU ID (which is used internally
anyway), bcmXXXX instead of brcmXXXX.
This is even used for target TITLE in make menuconfig already,
only the short target name used brcm so far.

Despite, since subtargets range from bcm2708 to bcm2711, it seems
appropriate to use bcm27xx instead of bcm2708 (again, as already done
for BOARDNAME).

This also renames the packages brcm2708-userland and brcm2708-gpu-fw.

Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
Acked-by: Álvaro Fernández Rojas <noltari@gmail.com>

1 files changed, 220 insertions, 0 deletions

diff --git a/target/linux/bcm27xx/patches-4.19/950-0053-char-broadcom-Add-vcio-module.patch b/target/linux/bcm27xx/patches-4.19/950-0053-char-broadcom-Add-vcio-module.patch
new file mode 100644
index 0000000000..e55c04ac2d
--- /dev/null
+++ b/target/linux/bcm27xx/patches-4.19/950-0053-char-broadcom-Add-vcio-module.patch
@@ -0,0 +1,220 @@
+From 6e169c17c0de4503264186d90aa51639924c6e9c Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Noralf=20Tr=C3=B8nnes?= <noralf@tronnes.org>
+Date: Fri, 26 Jun 2015 14:27:06 +0200
+Subject: [PATCH] char: broadcom: Add vcio module
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Add module for accessing the mailbox property channel through
+/dev/vcio. Was previously in bcm2708-vcio.
+
+Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
+---
+ drivers/char/broadcom/Kconfig  |   6 ++
+ drivers/char/broadcom/Makefile |   1 +
+ drivers/char/broadcom/vcio.c   | 175 +++++++++++++++++++++++++++++++++
+ 3 files changed, 182 insertions(+)
+ create mode 100644 drivers/char/broadcom/vcio.c
+
+--- a/drivers/char/broadcom/Kconfig
++++ b/drivers/char/broadcom/Kconfig
+@@ -15,6 +15,12 @@ config BCM2708_VCMEM
+         help
+           Helper for videocore memory access and total size allocation.
+ 
++config BCM_VCIO
++	tristate "Mailbox userspace access"
++	depends on BCM2835_MBOX
++	help
++	  Gives access to the mailbox property channel from userspace.
++
+ endif
+ 
+ config BCM_VC_SM
+--- a/drivers/char/broadcom/Makefile
++++ b/drivers/char/broadcom/Makefile
+@@ -1,4 +1,5 @@
+ obj-$(CONFIG_BCM2708_VCMEM)	+= vc_mem.o
++obj-$(CONFIG_BCM_VCIO)		+= vcio.o
+ obj-$(CONFIG_BCM_VC_SM)         += vc_sm/
+ 
+ obj-$(CONFIG_BCM2835_DEVGPIOMEM)+= bcm2835-gpiomem.o
+--- /dev/null
++++ b/drivers/char/broadcom/vcio.c
+@@ -0,0 +1,175 @@
++/*
++ *  Copyright (C) 2010 Broadcom
++ *  Copyright (C) 2015 Noralf Trønnes
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ *
++ */
++
++#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
++
++#include <linux/cdev.h>
++#include <linux/device.h>
++#include <linux/fs.h>
++#include <linux/init.h>
++#include <linux/ioctl.h>
++#include <linux/module.h>
++#include <linux/slab.h>
++#include <linux/uaccess.h>
++#include <soc/bcm2835/raspberrypi-firmware.h>
++
++#define MBOX_CHAN_PROPERTY 8
++
++#define VCIO_IOC_MAGIC 100
++#define IOCTL_MBOX_PROPERTY _IOWR(VCIO_IOC_MAGIC, 0, char *)
++
++static struct {
++	dev_t devt;
++	struct cdev cdev;
++	struct class *class;
++	struct rpi_firmware *fw;
++} vcio;
++
++static int vcio_user_property_list(void *user)
++{
++	u32 *buf, size;
++	int ret;
++
++	/* The first 32-bit is the size of the buffer */
++	if (copy_from_user(&size, user, sizeof(size)))
++		return -EFAULT;
++
++	buf = kmalloc(size, GFP_KERNEL);
++	if (!buf)
++		return -ENOMEM;
++
++	if (copy_from_user(buf, user, size)) {
++		kfree(buf);
++		return -EFAULT;
++	}
++
++	/* Strip off protocol encapsulation */
++	ret = rpi_firmware_property_list(vcio.fw, &buf[2], size - 12);
++	if (ret) {
++		kfree(buf);
++		return ret;
++	}
++
++	buf[1] = RPI_FIRMWARE_STATUS_SUCCESS;
++	if (copy_to_user(user, buf, size))
++		ret = -EFAULT;
++
++	kfree(buf);
++
++	return ret;
++}
++
++static int vcio_device_open(struct inode *inode, struct file *file)
++{
++	try_module_get(THIS_MODULE);
++
++	return 0;
++}
++
++static int vcio_device_release(struct inode *inode, struct file *file)
++{
++	module_put(THIS_MODULE);
++
++	return 0;
++}
++
++static long vcio_device_ioctl(struct file *file, unsigned int ioctl_num,
++			      unsigned long ioctl_param)
++{
++	switch (ioctl_num) {
++	case IOCTL_MBOX_PROPERTY:
++		return vcio_user_property_list((void *)ioctl_param);
++	default:
++		pr_err("unknown ioctl: %d\n", ioctl_num);
++		return -EINVAL;
++	}
++}
++
++const struct file_operations vcio_fops = {
++	.unlocked_ioctl = vcio_device_ioctl,
++	.open = vcio_device_open,
++	.release = vcio_device_release,
++};
++
++static int __init vcio_init(void)
++{
++	struct device_node *np;
++	static struct device *dev;
++	int ret;
++
++	np = of_find_compatible_node(NULL, NULL,
++				     "raspberrypi,bcm2835-firmware");
++/* Uncomment this when we only boot with Device Tree
++	if (!of_device_is_available(np))
++		return -ENODEV;
++*/
++	vcio.fw = rpi_firmware_get(np);
++	if (!vcio.fw)
++		return -ENODEV;
++
++	ret = alloc_chrdev_region(&vcio.devt, 0, 1, "vcio");
++	if (ret) {
++		pr_err("failed to allocate device number\n");
++		return ret;
++	}
++
++	cdev_init(&vcio.cdev, &vcio_fops);
++	vcio.cdev.owner = THIS_MODULE;
++	ret = cdev_add(&vcio.cdev, vcio.devt, 1);
++	if (ret) {
++		pr_err("failed to register device\n");
++		goto err_unregister_chardev;
++	}
++
++	/*
++	 * Create sysfs entries
++	 * 'bcm2708_vcio' is used for backwards compatibility so we don't break
++	 * userspace. Raspian has a udev rule that changes the permissions.
++	 */
++	vcio.class = class_create(THIS_MODULE, "bcm2708_vcio");
++	if (IS_ERR(vcio.class)) {
++		ret = PTR_ERR(vcio.class);
++		pr_err("failed to create class\n");
++		goto err_cdev_del;
++	}
++
++	dev = device_create(vcio.class, NULL, vcio.devt, NULL, "vcio");
++	if (IS_ERR(dev)) {
++		ret = PTR_ERR(dev);
++		pr_err("failed to create device\n");
++		goto err_class_destroy;
++	}
++
++	return 0;
++
++err_class_destroy:
++	class_destroy(vcio.class);
++err_cdev_del:
++	cdev_del(&vcio.cdev);
++err_unregister_chardev:
++	unregister_chrdev_region(vcio.devt, 1);
++
++	return ret;
++}
++module_init(vcio_init);
++
++static void __exit vcio_exit(void)
++{
++	device_destroy(vcio.class, vcio.devt);
++	class_destroy(vcio.class);
++	cdev_del(&vcio.cdev);
++	unregister_chrdev_region(vcio.devt, 1);
++}
++module_exit(vcio_exit);
++
++MODULE_AUTHOR("Gray Girling");
++MODULE_AUTHOR("Noralf Trønnes");
++MODULE_DESCRIPTION("Mailbox userspace access");
++MODULE_LICENSE("GPL");