From f3d9478b2ce468c3115b02ecae7e975990697f15 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Wed, 21 Jun 2006 15:42:43 +0200 Subject: [ALSA] snd-aoa: add snd-aoa This large patch adds all of snd-aoa. Consisting of many modules, it currently replaces snd-powermac for all layout-id based machines and handles many more (for example new powerbooks and powermacs with digital output that previously couldn't be used at all). It also has support for all layout-IDs that Apple has (judging from their Info.plist file) but not all are tested. The driver currently has 2 known regressions over snd-powermac: * it doesn't handle powermac 7,2 and 7,3 * it doesn't have a DRC control on snapper-based machines I will fix those during the 2.6.18 development cycle. Signed-off-by: Johannes Berg Signed-off-by: Takashi Iwai --- sound/aoa/aoa-gpio.h | 81 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 81 insertions(+) create mode 100644 sound/aoa/aoa-gpio.h (limited to 'sound/aoa/aoa-gpio.h') diff --git a/sound/aoa/aoa-gpio.h b/sound/aoa/aoa-gpio.h new file mode 100644 index 000000000000..3a61f3115573 --- /dev/null +++ b/sound/aoa/aoa-gpio.h @@ -0,0 +1,81 @@ +/* + * Apple Onboard Audio GPIO definitions + * + * Copyright 2006 Johannes Berg + * + * GPL v2, can be found in COPYING. + */ + +#ifndef __AOA_GPIO_H +#define __AOA_GPIO_H +#include +#include +#include + +typedef void (*notify_func_t)(void *data); + +enum notify_type { + AOA_NOTIFY_HEADPHONE, + AOA_NOTIFY_LINE_IN, + AOA_NOTIFY_LINE_OUT, +}; + +struct gpio_runtime; +struct gpio_methods { + /* for initialisation/de-initialisation of the GPIO layer */ + void (*init)(struct gpio_runtime *rt); + void (*exit)(struct gpio_runtime *rt); + + /* turn off headphone, speakers, lineout */ + void (*all_amps_off)(struct gpio_runtime *rt); + /* turn headphone, speakers, lineout back to previous setting */ + void (*all_amps_restore)(struct gpio_runtime *rt); + + void (*set_headphone)(struct gpio_runtime *rt, int on); + void (*set_speakers)(struct gpio_runtime *rt, int on); + void (*set_lineout)(struct gpio_runtime *rt, int on); + + int (*get_headphone)(struct gpio_runtime *rt); + int (*get_speakers)(struct gpio_runtime *rt); + int (*get_lineout)(struct gpio_runtime *rt); + + void (*set_hw_reset)(struct gpio_runtime *rt, int on); + + /* use this to be notified of any events. The notification + * function is passed the data, and is called in process + * context by the use of schedule_work. + * The interface for it is that setting a function to NULL + * removes it, and they return 0 if the operation succeeded, + * and -EBUSY if the notification is already assigned by + * someone else. */ + int (*set_notify)(struct gpio_runtime *rt, + enum notify_type type, + notify_func_t notify, + void *data); + /* returns 0 if not plugged in, 1 if plugged in + * or a negative error code */ + int (*get_detect)(struct gpio_runtime *rt, + enum notify_type type); +}; + +struct gpio_notification { + notify_func_t notify; + void *data; + void *gpio_private; + struct work_struct work; + struct mutex mutex; +}; + +struct gpio_runtime { + /* to be assigned by fabric */ + struct device_node *node; + /* since everyone needs this pointer anyway... */ + struct gpio_methods *methods; + /* to be used by the gpio implementation */ + int implementation_private; + struct gpio_notification headphone_notify; + struct gpio_notification line_in_notify; + struct gpio_notification line_out_notify; +}; + +#endif /* __AOA_GPIO_H */ -- cgit v1.2.1