1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  * drivers/media/i2c/ccs/ccs-quirk.h
4  *
5  * Generic driver for MIPI CCS/SMIA/SMIA++ compliant camera sensors
6  *
7  * Copyright (C) 2020 Intel Corporation
8  * Copyright (C) 2011--2012 Nokia Corporation
9  * Contact: Sakari Ailus <sakari.ailus@linux.intel.com>
10  */
11 
12 #ifndef __CCS_QUIRK__
13 #define __CCS_QUIRK__
14 
15 struct ccs_sensor;
16 
17 /**
18  * struct ccs_quirk - quirks for sensors that deviate from SMIA++ standard
19  *
20  * @limits: Replace sensor->limits with values which can't be read from
21  *	    sensor registers. Called the first time the sensor is powered up.
22  * @post_poweron: Called always after the sensor has been fully powered on.
23  * @pre_streamon: Called just before streaming is enabled.
24  * @post_streamoff: Called right after stopping streaming.
25  * @pll_flags: Return flags for the PLL calculator.
26  * @init: Quirk initialisation, called the last in probe(). This is
27  *	  also appropriate for adding sensor specific controls, for instance.
28  * @reg_access: Register access quirk. The quirk may divert the access
29  *		to another register, or no register at all.
30  *
31  *		@write: Is this read (false) or write (true) access?
32  *		@reg: Pointer to the register to access
33  *		@value: Register value, set by the caller on write, or
34  *			by the quirk on read
35  *
36  * @flags: Quirk flags
37  *
38  *		@return: 0 on success, -ENOIOCTLCMD if no register
39  *			 access may be done by the caller (default read
40  *			 value is zero), else negative error code on error
41  */
42 struct ccs_quirk {
43 	int (*limits)(struct ccs_sensor *sensor);
44 	int (*post_poweron)(struct ccs_sensor *sensor);
45 	int (*pre_streamon)(struct ccs_sensor *sensor);
46 	int (*post_streamoff)(struct ccs_sensor *sensor);
47 	unsigned long (*pll_flags)(struct ccs_sensor *sensor);
48 	int (*init)(struct ccs_sensor *sensor);
49 	int (*reg_access)(struct ccs_sensor *sensor, bool write, u32 *reg,
50 			  u32 *val);
51 	unsigned long flags;
52 };
53 
54 #define CCS_QUIRK_FLAG_8BIT_READ_ONLY			(1 << 0)
55 
56 struct ccs_reg_8 {
57 	u16 reg;
58 	u8 val;
59 };
60 
61 #define CCS_MK_QUIRK_REG_8(_reg, _val) \
62 	{				\
63 		.reg = (u16)_reg,	\
64 		.val = _val,		\
65 	}
66 
67 #define ccs_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 ccs_needs_quirk(sensor, _quirk)		\
73 	((sensor)->minfo.quirk ?			\
74 	 (sensor)->minfo.quirk->flags & _quirk : 0)
75 
76 extern const struct ccs_quirk smiapp_jt8ev1_quirk;
77 extern const struct ccs_quirk smiapp_imx125es_quirk;
78 extern const struct ccs_quirk smiapp_jt8ew9_quirk;
79 extern const struct ccs_quirk smiapp_tcm8500md_quirk;
80 
81 #endif /* __CCS_QUIRK__ */
82