From 26ade896b6ba3fd017ef4a26e71e7b7569222cb6 Mon Sep 17 00:00:00 2001 From: Robert Jarzmik Date: Sun, 15 Mar 2009 14:10:54 +0100 Subject: 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 Signed-off-by: Mark Brown --- include/sound/pxa2xx-lib.h | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'include/sound/pxa2xx-lib.h') 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 -- cgit v1.2.3-59-g8ed1b