diff options
| author | Kevin Cernekee <cernekee@gmail.com> | 2014-11-12 12:53:59 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-11-25 17:06:40 -0800 |
| commit | 3ffb1a8193bead7bf4ef0fec2dae050c70e4c1c1 (patch) | |
| tree | 18b8c192f0d6b3e6c21f4a93316c06763576a5d7 | |
| parent | 57850a50c1f91c6136fe0b4b27301ebbe848b2ce (diff) | |
| download | linux-3ffb1a8193bead7bf4ef0fec2dae050c70e4c1c1.tar.bz2 | |
serial: core: Add big-endian iotype
Since most drivers interpret UPIO_MEM32 to mean "little-endian" and use
readl/writel to access the registers, add a parallel UPIO_MEM32BE to
request the use of big-endian MMIO accessors (ioread32be/iowrite32be).
Signed-off-by: Kevin Cernekee <cernekee@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/tty/serial/serial_core.c | 2 | ||||
| -rw-r--r-- | include/linux/serial_core.h | 13 |
2 files changed, 9 insertions, 6 deletions
diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c index 5c8b8f50f787..57ca61b14670 100644 --- a/drivers/tty/serial/serial_core.c +++ b/drivers/tty/serial/serial_core.c @@ -2153,6 +2153,7 @@ uart_report_port(struct uart_driver *drv, struct uart_port *port) break; case UPIO_MEM: case UPIO_MEM32: + case UPIO_MEM32BE: case UPIO_AU: case UPIO_TSI: snprintf(address, sizeof(address), @@ -2796,6 +2797,7 @@ int uart_match_port(struct uart_port *port1, struct uart_port *port2) (port1->hub6 == port2->hub6); case UPIO_MEM: case UPIO_MEM32: + case UPIO_MEM32BE: case UPIO_AU: case UPIO_TSI: return (port1->mapbase == port2->mapbase); diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h index 3231a43f6acf..057038cf2788 100644 --- a/include/linux/serial_core.h +++ b/include/linux/serial_core.h @@ -142,12 +142,13 @@ struct uart_port { unsigned char iotype; /* io access style */ unsigned char unused1; -#define UPIO_PORT (0) -#define UPIO_HUB6 (1) -#define UPIO_MEM (2) -#define UPIO_MEM32 (3) -#define UPIO_AU (4) /* Au1x00 and RT288x type IO */ -#define UPIO_TSI (5) /* Tsi108/109 type IO */ +#define UPIO_PORT (0) /* 8b I/O port access */ +#define UPIO_HUB6 (1) /* Hub6 ISA card */ +#define UPIO_MEM (2) /* 8b MMIO access */ +#define UPIO_MEM32 (3) /* 32b little endian */ +#define UPIO_MEM32BE (4) /* 32b big endian */ +#define UPIO_AU (5) /* Au1x00 and RT288x type IO */ +#define UPIO_TSI (6) /* Tsi108/109 type IO */ unsigned int read_status_mask; /* driver specific */ unsigned int ignore_status_mask; /* driver specific */ |