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| author | Wolfgang Grandegger <wg@grandegger.com> | 2009-05-30 07:55:50 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-06-01 02:53:35 -0700 |
| commit | d1a277c584d0862dbf51991baea947ea5f2ce6bf (patch) | |
| tree | 368832ff703abde6c813eaaba42a48ae451fc1f1 /include/linux/can | |
| parent | 255a9154319d3cf475d527458037758935f6445b (diff) | |
| download | lwn-d1a277c584d0862dbf51991baea947ea5f2ce6bf.tar.gz lwn-d1a277c584d0862dbf51991baea947ea5f2ce6bf.zip | |
can: sja1000: generic OF platform bus driver
This patch adds a generic driver for SJA1000 chips on the OpenFirmware
platform bus found on embedded PowerPC systems. You need a SJA1000 node
definition in your flattened device tree source (DTS) file similar to:
can@3,100 {
compatible = "nxp,sja1000";
reg = <3 0x100 0x80>;
interrupts = <2 0>;
interrupt-parent = <&mpic>;
nxp,external-clock-frequency = <16000000>;
};
See also Documentation/powerpc/dts-bindings/can/sja1000.txt.
CC: devicetree-discuss@ozlabs.org
Signed-off-by: Wolfgang Grandegger <wg@grandegger.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/can')
| -rw-r--r-- | include/linux/can/platform/sja1000.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/can/platform/sja1000.h b/include/linux/can/platform/sja1000.h index 37966e630ff5..01ee2aeb048d 100644 --- a/include/linux/can/platform/sja1000.h +++ b/include/linux/can/platform/sja1000.h @@ -13,6 +13,7 @@ #define OCR_MODE_TEST 0x01 #define OCR_MODE_NORMAL 0x02 #define OCR_MODE_CLOCK 0x03 +#define OCR_MODE_MASK 0x07 #define OCR_TX0_INVERT 0x04 #define OCR_TX0_PULLDOWN 0x08 #define OCR_TX0_PULLUP 0x10 @@ -21,6 +22,8 @@ #define OCR_TX1_PULLDOWN 0x40 #define OCR_TX1_PULLUP 0x80 #define OCR_TX1_PUSHPULL 0xc0 +#define OCR_TX_MASK 0xfc +#define OCR_TX_SHIFT 2 struct sja1000_platform_data { u32 clock; /* CAN bus oscillator frequency in Hz */ |