1 /* 2 * drivers/media/i2c/smiapp/smiapp-quirk.h 3 * 4 * Generic driver for SMIA/SMIA++ compliant camera modules 5 * 6 * Copyright (C) 2011--2012 Nokia Corporation 7 * Contact: Sakari Ailus <sakari.ailus@iki.fi> 8 * 9 * This program is free software; you can redistribute it and/or 10 * modify it under the terms of the GNU General Public License 11 * version 2 as published by the Free Software Foundation. 12 * 13 * This program is distributed in the hope that it will be useful, but 14 * WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 16 * General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; if not, write to the Free Software 20 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 21 * 02110-1301 USA 22 * 23 */ 24 25 #ifndef __SMIAPP_QUIRK__ 26 #define __SMIAPP_QUIRK__ 27 28 struct smiapp_sensor; 29 30 /** 31 * struct smiapp_quirk - quirks for sensors that deviate from SMIA++ standard 32 * 33 * @limits: Replace sensor->limits with values which can't be read from 34 * sensor registers. Called the first time the sensor is powered up. 35 * @post_poweron: Called always after the sensor has been fully powered on. 36 * @pre_streamon: Called just before streaming is enabled. 37 * @post_streamon: Called right after stopping streaming. 38 * @reg_access: Register access quirk. The quirk may divert the access 39 * to another register, or no register at all. 40 * 41 * @write: Is this read (false) or write (true) access? 42 * @reg: Pointer to the register to access 43 * @value: Register value, set by the caller on write, or 44 * by the quirk on read 45 * 46 * @return: 0 on success, -ENOIOCTLCMD if no register 47 * access may be done by the caller (default read 48 * value is zero), else negative error code on error 49 */ 50 struct smiapp_quirk { 51 int (*limits)(struct smiapp_sensor *sensor); 52 int (*post_poweron)(struct smiapp_sensor *sensor); 53 int (*pre_streamon)(struct smiapp_sensor *sensor); 54 int (*post_streamoff)(struct smiapp_sensor *sensor); 55 unsigned long (*pll_flags)(struct smiapp_sensor *sensor); 56 int (*reg_access)(struct smiapp_sensor *sensor, bool write, u32 *reg, 57 u32 *val); 58 unsigned long flags; 59 }; 60 61 #define SMIAPP_QUIRK_FLAG_8BIT_READ_ONLY (1 << 0) 62 63 struct smiapp_reg_8 { 64 u16 reg; 65 u8 val; 66 }; 67 68 void smiapp_replace_limit(struct smiapp_sensor *sensor, 69 u32 limit, u32 val); 70 71 #define SMIAPP_MK_QUIRK_REG_8(_reg, _val) \ 72 { \ 73 .reg = (u16)_reg, \ 74 .val = _val, \ 75 } 76 77 #define smiapp_call_quirk(_sensor, _quirk, ...) \ 78 (_sensor->minfo.quirk && \ 79 _sensor->minfo.quirk->_quirk ? \ 80 _sensor->minfo.quirk->_quirk(_sensor, ##__VA_ARGS__) : 0) 81 82 #define smiapp_needs_quirk(_sensor, _quirk) \ 83 (_sensor->minfo.quirk ? \ 84 _sensor->minfo.quirk->flags & _quirk : 0) 85 86 extern const struct smiapp_quirk smiapp_jt8ev1_quirk; 87 extern const struct smiapp_quirk smiapp_imx125es_quirk; 88 extern const struct smiapp_quirk smiapp_jt8ew9_quirk; 89 extern const struct smiapp_quirk smiapp_tcm8500md_quirk; 90 91 #endif /* __SMIAPP_QUIRK__ */ 92