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asoc/multi-component: fsl: add support for disabled SSI nodes

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Add support for adding "status = disabled" to an SSI node to incidate that it
is not wired on the board.  This replaces the not-so-intuitive previous method
of omitting a codec-handle property.

Signed-off-by: Timur Tabi <timur@freescale.com>
Acked-by: Kumar Gala <galak@kernel.crashing.org>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
This commit is contained in:
Timur Tabi 2010-08-04 17:51:08 -05:00 committed by Liam Girdwood
parent 87a0632b29
commit ff71334a46
2 changed files with 11 additions and 3 deletions
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1
arch/powerpc/boot/dts/mpc8610_hpcd.dts
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@ -286,6 +286,7 @@
ssi@16100 {
compatible = "fsl,mpc8610-ssi";
status = "disabled";
cell-index = <1>;
reg = <0x16100 0x100>;
interrupt-parent = <&mpic>;

13
sound/soc/fsl/fsl_ssi.c
View file

@ -625,12 +625,19 @@ static int __devinit fsl_ssi_probe(struct of_device *of_dev,
struct resource res;
char name[64];
/* We are only interested in SSIs with a codec phandle in them, so let's
* make sure this SSI has one.
/* SSIs that are not connected on the board should have a
* status = "disabled"
* property in their device tree nodes.
*/
if (!of_get_property(np, "codec-handle", NULL))
if (!of_device_is_available(np))
return -ENODEV;
/* Check for a codec-handle property. */
if (!of_get_property(np, "codec-handle", NULL)) {
dev_err(&of_dev->dev, "missing codec-handle property\n");
return -ENODEV;
}
/* We only support the SSI in "I2S Slave" mode */
sprop = of_get_property(np, "fsl,mode", NULL);
if (!sprop || strcmp(sprop, "i2s-slave")) {