drivers/media/i2c/smiapp/smiapp-quirk.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * drivers/media/i2c/smiapp/smiapp-quirk.h
   4  *
   5  * Generic driver for SMIA/SMIA++ compliant camera modules
   6  *
   7  * Copyright (C) 2011--2012 Nokia Corporation
   8  * Contact: Sakari Ailus <sakari.ailus@iki.fi>
   9  */
  10
  11 #ifndef __SMIAPP_QUIRK__
  12 #define __SMIAPP_QUIRK__
  13
  14 struct smiapp_sensor;
  15
  16 /**
  17  * struct smiapp_quirk - quirks for sensors that deviate from SMIA++ standard
  18  *
  19  * @limits: Replace sensor->limits with values which can't be read from
  20  *          sensor registers. Called the first time the sensor is powered up.
  21  * @post_poweron: Called always after the sensor has been fully powered on.
  22  * @pre_streamon: Called just before streaming is enabled.
  23  * @post_streamon: Called right after stopping streaming.
  24  * @pll_flags: Return flags for the PLL calculator.
  25  * @init: Quirk initialisation, called the last in probe(). This is
  26  *        also appropriate for adding sensor specific controls, for instance.
  27  * @reg_access: Register access quirk. The quirk may divert the access
  28  *              to another register, or no register at all.
  29  *
  30  *              @write: Is this read (false) or write (true) access?
  31  *              @reg: Pointer to the register to access
  32  *              @value: Register value, set by the caller on write, or
  33  *                      by the quirk on read
  34  *
  35  *              @return: 0 on success, -ENOIOCTLCMD if no register
  36  *                       access may be done by the caller (default read
  37  *                       value is zero), else negative error code on error
  38  */
  39 struct smiapp_quirk {
  40         int (*limits)(struct smiapp_sensor *sensor);
  41         int (*post_poweron)(struct smiapp_sensor *sensor);
  42         int (*pre_streamon)(struct smiapp_sensor *sensor);
  43         int (*post_streamoff)(struct smiapp_sensor *sensor);
  44         unsigned long (*pll_flags)(struct smiapp_sensor *sensor);
  45         int (*init)(struct smiapp_sensor *sensor);
  46         int (*reg_access)(struct smiapp_sensor *sensor, bool write, u32 *reg,
  47                           u32 *val);
  48         unsigned long flags;
  49 };
  50
  51 #define SMIAPP_QUIRK_FLAG_8BIT_READ_ONLY                        (1 << 0)
  52
  53 struct smiapp_reg_8 {
  54         u16 reg;
  55         u8 val;
  56 };
  57
  58 void smiapp_replace_limit(struct smiapp_sensor *sensor,
  59                           u32 limit, u32 val);
  60
  61 #define SMIAPP_MK_QUIRK_REG_8(_reg, _val) \
  62         {                               \
  63                 .reg = (u16)_reg,       \
  64                 .val = _val,            \
  65         }
  66
  67 #define smiapp_call_quirk(sensor, _quirk, ...)                          \
  68         ((sensor)->minfo.quirk &&                                       \
  69          (sensor)->minfo.quirk->_quirk ?                                \
  70          (sensor)->minfo.quirk->_quirk(sensor, ##__VA_ARGS__) : 0)
  71
  72 #define smiapp_needs_quirk(sensor, _quirk)              \
  73         ((sensor)->minfo.quirk ?                        \
  74          (sensor)->minfo.quirk->flags & _quirk : 0)
  75
  76 extern const struct smiapp_quirk smiapp_jt8ev1_quirk;
  77 extern const struct smiapp_quirk smiapp_imx125es_quirk;
  78 extern const struct smiapp_quirk smiapp_jt8ew9_quirk;
  79 extern const struct smiapp_quirk smiapp_tcm8500md_quirk;
  80
  81 #endif /* __SMIAPP_QUIRK__ */