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| author | Robert Jarzmik <robert.jarzmik@free.fr> | 2009-03-15 14:10:54 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2009-03-15 20:20:37 +0000 |
| commit | 26ade896b6ba3fd017ef4a26e71e7b7569222cb6 (patch) | |
| tree | 274eeb6778bf399907ec2cce8a1422244d2bae7b /include/sound/pxa2xx-lib.h | |
| parent | 77dd7e17b86bd81b3638e01d784a72652071508b (diff) | |
| download | lwn-26ade896b6ba3fd017ef4a26e71e7b7569222cb6.tar.gz lwn-26ade896b6ba3fd017ef4a26e71e7b7569222cb6.zip | |
ASoC: Allow choice of ac97 gpio reset line
As the PXA27x series allow 2 gpios to reset the ac97 bus,
allow through platform data configuration the definition of
the correct gpio which will reset the AC97 bus.
This comes from a silicon defect on the PXA27x series, where
the gpio must be manually controlled in warm reset cases.
Signed-off-by: Robert Jarzmik <rjarzmik@free.fr>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'include/sound/pxa2xx-lib.h')
| -rw-r--r-- | include/sound/pxa2xx-lib.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/include/sound/pxa2xx-lib.h b/include/sound/pxa2xx-lib.h index 2fd3d251d9a5..2c894b600e5b 100644 --- a/include/sound/pxa2xx-lib.h +++ b/include/sound/pxa2xx-lib.h @@ -42,4 +42,19 @@ extern int pxa2xx_ac97_hw_resume(void); extern int pxa2xx_ac97_hw_probe(struct platform_device *dev); extern void pxa2xx_ac97_hw_remove(struct platform_device *dev); +/* AC97 platform_data */ +/** + * struct pxa2xx_ac97_platform_data - pxa ac97 platform data + * @reset_gpio: AC97 reset gpio (normally gpio113 or gpio95) + * a -1 value means no gpio will be used for reset + * + * Platform data should only be specified for pxa27x CPUs where a silicon bug + * prevents correct operation of the reset line. If not specified, the default + * behaviour is to consider gpio 113 as the AC97 reset line, which is the + * default on most boards. + */ +struct pxa2xx_ac97_platform_data { + int reset_gpio; +}; + #endif |