101 lines
3.4 KiB
C
101 lines
3.4 KiB
C
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/* Copyright (c) 2012-2019, NVIDIA CORPORATION. All rights reserved.
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __NVC_H__
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#define __NVC_H__
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#include <linux/regulator/consumer.h>
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#include <uapi/media/nvc.h>
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#define MAKE_CONSTUSER_PTR(p) (const void __user *)((unsigned long)(p))
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#define MAKE_USER_PTR(p) (void __user *)((unsigned long)(p))
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/* The NVC_CFG_ defines are for the .cfg entry in the
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* platform data structure.
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*/
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/* Device not registered if not found */
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#define NVC_CFG_NODEV (1 << 0)
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/* Don't return errors */
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#define NVC_CFG_NOERR (1 << 1)
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/* Always go to _PWR_STDBY instead of _PWR_OFF */
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#define NVC_CFG_OFF2STDBY (1 << 2)
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/* Init device at sys boot */
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#define NVC_CFG_BOOT_INIT (1 << 3)
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/* Sync mode uses an I2C MUX to send at same time */
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#define NVC_CFG_SYNC_I2C_MUX (1 << 4)
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struct nvc_regulator_init {
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unsigned vreg_num;
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const char *vreg_name;
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};
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struct nvc_regulator {
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bool vreg_flag;
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struct regulator *vreg;
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const char *vreg_name;
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};
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/* The GPIO mechanism uses the _gpio_type in the device's header file as a key
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* to define all the possible GPIO's the device will need. The key is used to
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* combine the GPIO's defined in the platform board file using the
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* nvc_gpio_pdata structure with the nvc_gpio structure in the nvc kernel
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* driver.
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*/
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struct nvc_gpio_pdata {
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/* use a _gpio_type enum from the device's header file */
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unsigned gpio_type;
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/* the GPIO system number */
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unsigned gpio;
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/* init_en is typically set to true for all GPIO's used by the driver.
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* However, some GPIO's are used by multiple drivers (CSI MUX, reset,
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* etc.). In this case, this is set true for only one of the drivers
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* that uses the GPIO and false for the others. If the platform board
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* file initializes the GPIO, then this is false for all of the drivers
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* using the GPIO.
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*/
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bool init_en;
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/* this defines the assert level for the general purpose GPIO's
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* (_GPIO_TYPE_GPx, etc.). The _GPIO_TYPE_GPx can be used for a GPIO
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* that the driver doesn't know about but is needed in order for the
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* device to work (CSI select, regulator, etc.). The driver will
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* blindly assert the GPIO when the device is operational and deassert
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* when the device is turned off.
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*/
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bool active_high;
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};
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struct nvc_gpio_init {
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/* key to match in nvc_gpio_pdata */
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unsigned gpio_type;
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/* same as in gpio.h */
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unsigned long flags;
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/* same as in gpio.h */
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const char *label;
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/* used instead of nvc_gpio_pdata.active_high if use_flags true */
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bool active_high;
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/* false if nvc_gpio_pdata.active_high used else flags is used */
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bool use_flags;
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};
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struct nvc_gpio {
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unsigned gpio; /* system GPIO number */
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bool own; /* gets set if driver initializes */
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bool active_high; /* used for GP GPIOs */
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bool valid; /* set if struct data is valid */
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bool flag; /* scratch flag for driver implementation */
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};
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#endif /* __NVC_H__ */
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