6f7481b668
Add a quirk for diverting registers for on some sensors, even the standard registers are not where they can be expected to be found. Add a quirk to to help using such sensors. smiapp_write_no_quirk() and smiapp_read_no_quirk() functions are provided for the use of quirk implementations. Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
91 lines
3 KiB
C
91 lines
3 KiB
C
/*
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* drivers/media/i2c/smiapp/smiapp-quirk.h
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*
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* Generic driver for SMIA/SMIA++ compliant camera modules
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*
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* Copyright (C) 2011--2012 Nokia Corporation
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* Contact: Sakari Ailus <sakari.ailus@iki.fi>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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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, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
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* 02110-1301 USA
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*
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*/
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#ifndef __SMIAPP_QUIRK__
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#define __SMIAPP_QUIRK__
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struct smiapp_sensor;
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/**
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* struct smiapp_quirk - quirks for sensors that deviate from SMIA++ standard
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*
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* @limits: Replace sensor->limits with values which can't be read from
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* sensor registers. Called the first time the sensor is powered up.
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* @post_poweron: Called always after the sensor has been fully powered on.
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* @pre_streamon: Called just before streaming is enabled.
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* @post_streamon: Called right after stopping streaming.
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* @reg_access: Register access quirk. The quirk may divert the access
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* to another register, or no register at all.
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*
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* @write: Is this read (false) or write (true) access?
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* @reg: Pointer to the register to access
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* @value: Register value, set by the caller on write, or
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* by the quirk on read
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*
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* @return: 0 on success, -ENOIOCTLCMD if no register
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* access may be done by the caller (default read
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* value is zero), else negative error code on error
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*/
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struct smiapp_quirk {
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int (*limits)(struct smiapp_sensor *sensor);
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int (*post_poweron)(struct smiapp_sensor *sensor);
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int (*pre_streamon)(struct smiapp_sensor *sensor);
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int (*post_streamoff)(struct smiapp_sensor *sensor);
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unsigned long (*pll_flags)(struct smiapp_sensor *sensor);
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int (*reg_access)(struct smiapp_sensor *sensor, bool write, u32 *reg,
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u32 *val);
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unsigned long flags;
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};
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#define SMIAPP_QUIRK_FLAG_8BIT_READ_ONLY (1 << 0)
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struct smiapp_reg_8 {
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u16 reg;
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u8 val;
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};
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void smiapp_replace_limit(struct smiapp_sensor *sensor,
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u32 limit, u32 val);
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#define SMIAPP_MK_QUIRK_REG_8(_reg, _val) \
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{ \
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.reg = (u16)_reg, \
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.val = _val, \
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}
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#define smiapp_call_quirk(_sensor, _quirk, ...) \
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(_sensor->minfo.quirk && \
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_sensor->minfo.quirk->_quirk ? \
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_sensor->minfo.quirk->_quirk(_sensor, ##__VA_ARGS__) : 0)
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#define smiapp_needs_quirk(_sensor, _quirk) \
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(_sensor->minfo.quirk ? \
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_sensor->minfo.quirk->flags & _quirk : 0)
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extern const struct smiapp_quirk smiapp_jt8ev1_quirk;
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extern const struct smiapp_quirk smiapp_imx125es_quirk;
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extern const struct smiapp_quirk smiapp_jt8ew9_quirk;
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extern const struct smiapp_quirk smiapp_tcm8500md_quirk;
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#endif /* __SMIAPP_QUIRK__ */
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