Messages in this thread Patch in this message | | | From | Rob Herring <> | Subject | [PATCH 3/3] i2c-designware: add OF binding support | Date | Fri, 5 Aug 2011 16:24:28 -0500 |
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From: Rob Herring <rob.herring@calxeda.com>
Add of_match_table and DT style i2c registration to designware i2c driver.
Signed-off-by: Rob Herring <rob.herring@calxeda.com> Acked-by: Grant Likely <grant.likely@secretlab.ca> Cc: devicetree-discuss@lists.ozlabs.org Cc: Ben Dooks <ben-linux@fluff.org> Cc: linux-i2c@vger.kernel.org --- Documentation/devicetree/bindings/i2c/dw-i2c.txt | 23 ++++++++++++++++++++++ drivers/i2c/busses/i2c-designware.c | 8 +++++++ 2 files changed, 31 insertions(+), 0 deletions(-) create mode 100644 Documentation/devicetree/bindings/i2c/dw-i2c.txt
diff --git a/Documentation/devicetree/bindings/i2c/dw-i2c.txt b/Documentation/devicetree/bindings/i2c/dw-i2c.txt new file mode 100644 index 0000000..cbcb404 --- /dev/null +++ b/Documentation/devicetree/bindings/i2c/dw-i2c.txt @@ -0,0 +1,23 @@ +* Synopsys DesignWare I2C + +Required properties : + + - compatible : should be "snps,designware-i2c" + - reg : Offset and length of the register set for the device + - interrupts : <IRQ> where IRQ is the interrupt number. + +Recommended properties : + + - clock-frequency : desired I2C bus clock frequency in Hz. + +Example : + + i2c@f0000 { + #address-cells = <1>; + #size-cells = <0>; + compatible = "snps,designware-i2c"; + reg = <0xf0000 0x1000>; + interrupts = <11>; + clock-frequency = <400000>; + }; + diff --git a/drivers/i2c/busses/i2c-designware.c b/drivers/i2c/busses/i2c-designware.c index b7a51c4..0223b98 100644 --- a/drivers/i2c/busses/i2c-designware.c +++ b/drivers/i2c/busses/i2c-designware.c @@ -769,6 +769,7 @@ static int __devinit dw_i2c_probe(struct platform_device *pdev) sizeof(adap->name)); adap->algo = &i2c_dw_algo; adap->dev.parent = &pdev->dev; + adap->dev.of_node = pdev->dev.of_node; adap->nr = pdev->id; r = i2c_add_numbered_adapter(adap); @@ -819,6 +820,12 @@ static int __devexit dw_i2c_remove(struct platform_device *pdev) return 0; } +static const struct of_device_id dw_i2c_of_match[] = { + { .compatible = "snps,designware-i2c", }, + {}, +}; +MODULE_DEVICE_TABLE(of, dw_i2c_of_match); + /* work with hotplug and coldplug */ MODULE_ALIAS("platform:i2c_designware"); @@ -827,6 +834,7 @@ static struct platform_driver dw_i2c_driver = { .driver = { .name = "i2c_designware", .owner = THIS_MODULE, + .of_match_table = dw_i2c_of_match, }, }; -- 1.7.4.1
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