ti_adcvar.h

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    1 /*-
    2  * Copyright 2014 Luiz Otavio O Souza <loos@freebsd.org>
    3  * All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer.
   10  * 2. Redistributions in binary form must reproduce the above copyright
   11  *    notice, this list of conditions and the following disclaimer in the
   12  *    documentation and/or other materials provided with the distribution.
   13  *
   14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   24  * SUCH DAMAGE.
   25  *
   26  * $FreeBSD$
   27  */
   28 
   29 #ifndef _TI_ADCVAR_H_
   30 #define _TI_ADCVAR_H_
   31 
   32 #define TI_ADC_NPINS    8
   33 
   34 #define ADC_READ4(_sc, reg)     bus_read_4((_sc)->sc_mem_res, reg)
   35 #define ADC_WRITE4(_sc, reg, value)     \
   36         bus_write_4((_sc)->sc_mem_res, reg, value)
   37 
   38 struct ti_adc_softc {
   39         device_t                sc_dev;
   40         int                     sc_last_state;
   41         struct mtx              sc_mtx;
   42         struct resource         *sc_mem_res;
   43         struct resource         *sc_irq_res;
   44         void                    *sc_intrhand;
   45         int                     sc_tsc_wires;
   46         int                     sc_tsc_wire_config[TI_ADC_NPINS];
   47         int                     sc_coord_readouts;
   48         int                     sc_x_plate_resistance;
   49         int                     sc_charge_delay;
   50         int                     sc_adc_nchannels;
   51         int                     sc_adc_channels[TI_ADC_NPINS];
   52         int                     sc_xp_bit, sc_xp_inp;
   53         int                     sc_xn_bit, sc_xn_inp;
   54         int                     sc_yp_bit, sc_yp_inp;
   55         int                     sc_yn_bit, sc_yn_inp;
   56         uint32_t                sc_tsc_enabled;
   57         int                     sc_pen_down;
   58 #ifdef EVDEV_SUPPORT
   59         int                     sc_x;
   60         int                     sc_y;
   61         struct evdev_dev *sc_evdev;
   62 #endif
   63 };
   64 
   65 struct ti_adc_input {
   66         int32_t                 enable;         /* input enabled */
   67         int32_t                 samples;        /* samples average */
   68         int32_t                 input;          /* input number */
   69         int32_t                 value;          /* raw converted value */
   70         uint32_t                stepconfig;     /* step config register */
   71         uint32_t                stepdelay;      /* step delay register */
   72         struct ti_adc_softc     *sc;            /* pointer to adc softc */
   73 };
   74 
   75 #define TI_ADC_LOCK(_sc)                \
   76         mtx_lock(&(_sc)->sc_mtx)
   77 #define TI_ADC_UNLOCK(_sc)              \
   78         mtx_unlock(&(_sc)->sc_mtx)
   79 #define TI_ADC_LOCK_INIT(_sc)   \
   80         mtx_init(&_sc->sc_mtx, device_get_nameunit(_sc->sc_dev), \
   81             "ti_adc", MTX_DEF)
   82 #define TI_ADC_LOCK_DESTROY(_sc)        \
   83         mtx_destroy(&_sc->sc_mtx);
   84 #define TI_ADC_LOCK_ASSERT(_sc) \
   85         mtx_assert(&(_sc)->sc_mtx, MA_OWNED)
   86 
   87 #endif /* _TI_ADCVAR_H_ */

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FreeBSD/Linux Kernel Cross Reference sys/arm/ti/ti_adcvar.h

FreeBSD/Linux Kernel Cross Reference
sys/arm/ti/ti_adcvar.h