From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rob Herring Subject: [PATCH 3/3] i2c-designware: add OF binding support Date: Fri, 5 Aug 2011 16:24:28 -0500 Message-ID: <1312579468-19365-4-git-send-email-robherring2@gmail.com> References: <1312579468-19365-1-git-send-email-robherring2@gmail.com> Return-path: In-Reply-To: <1312579468-19365-1-git-send-email-robherring2-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> Sender: linux-i2c-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Grant Likely Cc: linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-i2c-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Rob Herring , devicetree-discuss-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org, Ben Dooks List-Id: linux-i2c@vger.kernel.org From: Rob Herring Add of_match_table and DT style i2c registration to designware i2c driver. Signed-off-by: Rob Herring Acked-by: Grant Likely Cc: devicetree-discuss-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org Cc: Ben Dooks Cc: linux-i2c-u79uwXL29TY76Z2rM5mHXA@public.gmane.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 : 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