It should be available for DT users as well. This does not
enable DMA by default except with ACPI. DT users can enable
DMA based on a property.
Signed-off-by: Heikki Krogerus <heikki.krogerus@xxxxxxxxxxxxxxx>
---
drivers/tty/serial/8250/8250_dw.c | 20 ++++++++++----------
1 file changed, 10 insertions(+), 10 deletions(-)
diff --git a/drivers/tty/serial/8250/8250_dw.c b/drivers/tty/serial/8250/8250_dw.c
index daf710f..d7a405b 100644
--- a/drivers/tty/serial/8250/8250_dw.c
+++ b/drivers/tty/serial/8250/8250_dw.c
@@ -56,11 +56,12 @@
struct dw8250_data {
- int last_lcr;
- int last_mcr;
- int line;
- struct clk *clk;
- u8 usr_reg;
+ u8 usr_reg;
+ int last_lcr;
+ int last_mcr;
+ int line;
+ struct clk *clk;
+ struct uart_8250_dma dma;
};
static inline int dw8250_modify_msr(struct uart_port *p, int offset, int value)
@@ -241,7 +242,8 @@ static int dw8250_probe_of(struct uart_port *p,
}
#ifdef CONFIG_ACPI
-static int dw8250_probe_acpi(struct uart_8250_port *up)
+static int dw8250_probe_acpi(struct uart_8250_port *up,
+ struct dw8250_data *data)
{
const struct acpi_device_id *id;
struct uart_port *p = &up->port;
@@ -260,9 +262,7 @@ static int dw8250_probe_acpi(struct uart_8250_port *up)
if (!p->uartclk)
p->uartclk = (unsigned int)id->driver_data;
- up->dma = devm_kzalloc(p->dev, sizeof(*up->dma), GFP_KERNEL);
- if (!up->dma)
- return -ENOMEM;
+ up->dma = &data->dma;
up->dma->rxconf.src_maxburst = p->fifosize / 4;
up->dma->txconf.dst_maxburst = p->fifosize / 4;
@@ -324,7 +324,7 @@ static int dw8250_probe(struct platform_device *pdev)
if (err)
return err;
} else if (ACPI_HANDLE(&pdev->dev)) {
- err = dw8250_probe_acpi(&uart);
+ err = dw8250_probe_acpi(&uart, data);
if (err)
return err;
} else {
--
1.8.4.rc3
--
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