diff options
Diffstat (limited to 'include/media/nvc.h')
| -rw-r--r-- | include/media/nvc.h | 56 |
1 files changed, 52 insertions, 4 deletions
diff --git a/include/media/nvc.h b/include/media/nvc.h index c1be3473ecf9..7fd4bf2da6ac 100644 --- a/include/media/nvc.h +++ b/include/media/nvc.h @@ -1,4 +1,4 @@ -/* Copyright (C) 2011 NVIDIA Corporation. +/* Copyright (C) 2012 NVIDIA Corporation. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as @@ -112,7 +112,7 @@ struct nvc_param { * algorithms. * The PM actions: * _PWR_ERR = Non-valid state. - * _PWR_OFF_DELAYED = _PWR_OFF is called after a period of time. + * _PWR_OFF_FORCE = _PWR_OFF is forced regardless of standby mechanisms. * _PWR_OFF = Device, regulators, clocks, etc is turned off. The longest * transition time to _PWR_ON is from this state. * _PWR_STDBY_OFF = Device is useless but powered. No communication possible. @@ -122,11 +122,10 @@ struct nvc_param { * _PWR_COMM = Device is powered enough to communicate with the device. * _PWR_ON = Device is at full power with active output. * - * The kernel drivers treat these calls as guaranteed level of service. + * The kernel drivers treat these calls as Guaranteed Level Of Service. */ #define NVC_PWR_ERR 0 -#define NVC_PWR_OFF_DELAYED 1 /* obsolete - never used */ #define NVC_PWR_OFF_FORCE 1 #define NVC_PWR_OFF 2 #define NVC_PWR_STDBY_OFF 3 @@ -140,6 +139,55 @@ struct nvc_regulator { const char *vreg_name; }; +/* The GPIO mechanism uses the _gpio_type in the device's header file as a key + * to define all the possible GPIO's the device will need. The key is used to + * combine the GPIO's defined in the platform board file using the + * nvc_gpio_pdata structure with the nvc_gpio structure in the nvc kernel + * driver. + */ +struct nvc_gpio_pdata { + /* use a _gpio_type enum from the device's header file */ + unsigned gpio_type; + /* the GPIO system number */ + unsigned gpio; + /* init_en is typically set to true for all GPIO's used by the driver. + * However, some GPIO's are used by multiple drivers (CSI MUX, reset, + * etc.). In this case, this is set true for only one of the drivers + * that uses the GPIO and false for the others. If the platform board + * file initializes the GPIO, then this is false for all of the drivers + * using the GPIO. + */ + bool init_en; + /* this defines the assert level for the general purpose GPIO's + * (_GPIO_TYPE_GPx, etc.). The _GPIO_TYPE_GPx can be used for a GPIO + * that the driver doesn't know about but is needed in order for the + * device to work (CSI select, regulator, etc.). The driver will + * blindly assert the GPIO when the device is operational and deassert + * when the device is turned off. + */ + bool active_high; +}; + +struct nvc_gpio_init { + /* key to match in nvc_gpio_pdata */ + unsigned gpio_type; + /* same as in gpio.h */ + unsigned long flags; + /* same as in gpio.h */ + const char *label; + /* used instead of nvc_gpio_pdata.active_high if use_flags true */ + bool active_high; + /* false if nvc_gpio_pdata.active_high used else flags is used */ + bool use_flags; +}; + +struct nvc_gpio { + unsigned gpio; /* system GPIO number */ + bool own; /* gets set if driver initializes */ + bool active_high; /* used for GP GPIOs */ + bool flag; /* scratch flag for driver implementation */ +}; + #endif /* __KERNEL__ */ #endif /* __NVC_H__ */ |