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, 61 insertions, 0 deletions

diff --git a/target/linux/bcm27xx/patches-4.19/950-0796-tty-amba-pl011-Add-un-throttle-support.patch b/target/linux/bcm27xx/patches-4.19/950-0796-tty-amba-pl011-Add-un-throttle-support.patch
new file mode 100644
index 0000000000..0ab6cf2fe9
--- /dev/null
+++ b/target/linux/bcm27xx/patches-4.19/950-0796-tty-amba-pl011-Add-un-throttle-support.patch
@@ -0,0 +1,61 @@
+From d4f4b57c667141ca98711cfcb30ae2b8deb1a034 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Fri, 24 Jan 2020 11:38:28 +0000
+Subject: [PATCH] tty: amba-pl011: Add un/throttle support
+
+The PL011 driver lacks throttle and unthrottle methods. As a result,
+sending more data to the Pi than it can immediately sink while CRTSCTS
+is enabled causes a NULL pointer to be followed.
+
+Add a throttle handler that disables the RX interrupts, and an
+unthrottle handler that reenables them.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+---
+ drivers/tty/serial/amba-pl011.c | 28 ++++++++++++++++++++++++++++
+ 1 file changed, 28 insertions(+)
+
+--- a/drivers/tty/serial/amba-pl011.c
++++ b/drivers/tty/serial/amba-pl011.c
+@@ -1323,6 +1323,32 @@ static void pl011_start_tx(struct uart_p
+ 		pl011_start_tx_pio(uap);
+ }
+ 
++static void pl011_throttle(struct uart_port *port)
++{
++	struct uart_amba_port *uap =
++	    container_of(port, struct uart_amba_port, port);
++	unsigned long flags;
++
++	spin_lock_irqsave(&uap->port.lock, flags);
++	uap->im &= ~(UART011_RTIM | UART011_RXIM);
++	pl011_write(uap->im, uap, REG_IMSC);
++	spin_unlock_irqrestore(&uap->port.lock, flags);
++}
++
++static void pl011_unthrottle(struct uart_port *port)
++{
++	struct uart_amba_port *uap =
++	    container_of(port, struct uart_amba_port, port);
++	unsigned long flags;
++
++	spin_lock_irqsave(&uap->port.lock, flags);
++	uap->im |= UART011_RTIM;
++	if (!pl011_dma_rx_running(uap))
++	    uap->im |= UART011_RXIM;
++	pl011_write(uap->im, uap, REG_IMSC);
++	spin_unlock_irqrestore(&uap->port.lock, flags);
++}
++
+ static void pl011_stop_rx(struct uart_port *port)
+ {
+ 	struct uart_amba_port *uap =
+@@ -2165,6 +2191,8 @@ static const struct uart_ops amba_pl011_
+ 	.stop_tx	= pl011_stop_tx,
+ 	.start_tx	= pl011_start_tx,
+ 	.stop_rx	= pl011_stop_rx,
++	.throttle	= pl011_throttle,
++	.unthrottle	= pl011_unthrottle,
+ 	.enable_ms	= pl011_enable_ms,
+ 	.break_ctl	= pl011_break_ctl,
+ 	.startup	= pl011_startup,