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authorLinus Torvalds <torvalds@linux-foundation.org>2015-04-24 18:46:18 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2015-04-24 18:46:18 +0300
commitd56a669ca59c37ed0a7282a251b2f2f22533343a (patch)
treecef7bd4699754057474cc96430864f690f1786e0 /drivers/tty
parent836ee4874e201a5907f9658fb2bf3527dd952d30 (diff)
parent04fca0e390e80d88c2f959aef86e0bb7f26fea01 (diff)
downloadlinux-d56a669ca59c37ed0a7282a251b2f2f22533343a.tar.xz
Merge tag 'devicetree-for-4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux
Pull second batch of devicetree updates from Rob Herring: "As Grant mentioned in the first devicetree pull request, here is the 2nd batch of DT changes for 4.1. The main remaining item here is the endianness bindings and related 8250 driver support. - DT endianness specification bindings - big-endian 8250 serial support - DT overlay unittest updates - various DT doc updates - compile fixes for OF_IRQ=n" * tag 'devicetree-for-4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: frv: add io{read,write}{16,32}be functions mn10300: add io{read,write}{16,32}be functions Documentation: DT bindings: add doc for Altera's SoCFPGA platform of: base: improve of_get_next_child() kernel-doc Doc: dt: arch_timer: discourage clock-frequency use of: unittest: overlay: Keep track of created overlays of/fdt: fix allocation size for device node path serial: of_serial: Support big-endian register accesses serial: 8250: Add support for big-endian MMIO accesses of: Document {little,big,native}-endian bindings of/fdt: Add endianness helper function for early init code of: Add helper function to check MMIO register endianness of/fdt: Remove "reg" data prints from early_init_dt_scan_memory of: add vendor prefix for Artesyn of: Add dummy of_irq_to_resource_table() for IRQ_OF=n of: OF_IRQ should depend on IRQ_DOMAIN
Diffstat (limited to 'drivers/tty')
-rw-r--r--drivers/tty/serial/8250/8250_core.c20
-rw-r--r--drivers/tty/serial/8250/8250_early.c5
-rw-r--r--drivers/tty/serial/of_serial.c3
3 files changed, 27 insertions, 1 deletions
diff --git a/drivers/tty/serial/8250/8250_core.c b/drivers/tty/serial/8250/8250_core.c
index 422ebea96a64..4506e405c8f3 100644
--- a/drivers/tty/serial/8250/8250_core.c
+++ b/drivers/tty/serial/8250/8250_core.c
@@ -450,6 +450,18 @@ static unsigned int mem32_serial_in(struct uart_port *p, int offset)
return readl(p->membase + offset);
}
+static void mem32be_serial_out(struct uart_port *p, int offset, int value)
+{
+ offset = offset << p->regshift;
+ iowrite32be(value, p->membase + offset);
+}
+
+static unsigned int mem32be_serial_in(struct uart_port *p, int offset)
+{
+ offset = offset << p->regshift;
+ return ioread32be(p->membase + offset);
+}
+
static unsigned int io_serial_in(struct uart_port *p, int offset)
{
offset = offset << p->regshift;
@@ -488,6 +500,11 @@ static void set_io_from_upio(struct uart_port *p)
p->serial_out = mem32_serial_out;
break;
+ case UPIO_MEM32BE:
+ p->serial_in = mem32be_serial_in;
+ p->serial_out = mem32be_serial_out;
+ break;
+
#if defined(CONFIG_MIPS_ALCHEMY) || defined(CONFIG_SERIAL_8250_RT288X)
case UPIO_AU:
p->serial_in = au_serial_in;
@@ -513,6 +530,7 @@ serial_port_out_sync(struct uart_port *p, int offset, int value)
switch (p->iotype) {
case UPIO_MEM:
case UPIO_MEM32:
+ case UPIO_MEM32BE:
case UPIO_AU:
p->serial_out(p, offset, value);
p->serial_in(p, UART_LCR); /* safe, no side-effects */
@@ -2748,6 +2766,7 @@ static int serial8250_request_std_resource(struct uart_8250_port *up)
case UPIO_AU:
case UPIO_TSI:
case UPIO_MEM32:
+ case UPIO_MEM32BE:
case UPIO_MEM:
if (!port->mapbase)
break;
@@ -2784,6 +2803,7 @@ static void serial8250_release_std_resource(struct uart_8250_port *up)
case UPIO_AU:
case UPIO_TSI:
case UPIO_MEM32:
+ case UPIO_MEM32BE:
case UPIO_MEM:
if (!port->mapbase)
break;
diff --git a/drivers/tty/serial/8250/8250_early.c b/drivers/tty/serial/8250/8250_early.c
index 8e119682266a..6c0fd8b9d1c3 100644
--- a/drivers/tty/serial/8250/8250_early.c
+++ b/drivers/tty/serial/8250/8250_early.c
@@ -42,6 +42,8 @@ unsigned int __weak __init serial8250_early_in(struct uart_port *port, int offse
return readb(port->membase + offset);
case UPIO_MEM32:
return readl(port->membase + (offset << 2));
+ case UPIO_MEM32BE:
+ return ioread32be(port->membase + (offset << 2));
case UPIO_PORT:
return inb(port->iobase + offset);
default:
@@ -58,6 +60,9 @@ void __weak __init serial8250_early_out(struct uart_port *port, int offset, int
case UPIO_MEM32:
writel(value, port->membase + (offset << 2));
break;
+ case UPIO_MEM32BE:
+ iowrite32be(value, port->membase + (offset << 2));
+ break;
case UPIO_PORT:
outb(value, port->iobase + offset);
break;
diff --git a/drivers/tty/serial/of_serial.c b/drivers/tty/serial/of_serial.c
index aa00154c4a6d..5b73afb9f9f3 100644
--- a/drivers/tty/serial/of_serial.c
+++ b/drivers/tty/serial/of_serial.c
@@ -116,7 +116,8 @@ static int of_platform_serial_setup(struct platform_device *ofdev,
port->iotype = UPIO_MEM;
break;
case 4:
- port->iotype = UPIO_MEM32;
+ port->iotype = of_device_is_big_endian(np) ?
+ UPIO_MEM32BE : UPIO_MEM32;
break;
default:
dev_warn(&ofdev->dev, "unsupported reg-io-width (%d)\n",