123 lines
4.8 KiB
C
123 lines
4.8 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2011 by Amaury Pouly
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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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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#ifndef __lradc_imx233__
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#define __lradc_imx233__
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#include "config.h"
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#include "cpu.h"
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#include "cpu.h"
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#include "system.h"
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#include "system-target.h"
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#include "regs/regs-lradc.h"
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/** additional defines */
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#define BP_LRADC_CTRL4_LRADCxSELECT(x) (4 * (x))
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#define BM_LRADC_CTRL4_LRADCxSELECT(x) (0xf << (4 * (x)))
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#define BP_LRADC_CTRL1_LRADCx_IRQ(x) (x)
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#define BM_LRADC_CTRL1_LRADCx_IRQ(x) (1 << (x))
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#define BP_LRADC_CTRL1_LRADCx_IRQ_EN(x) (16 + (x))
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#define BM_LRADC_CTRL1_LRADCx_IRQ_EN(x) (1 << (16 + (x)))
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#define LRADC_NUM_CHANNELS 8
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#define LRADC_NUM_DELAYS 4
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#define LRADC_NUM_SOURCES 16
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#define LRADC_SRC(x) (x)
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#define LRADC_SRC_XPLUS LRADC_SRC(2)
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#define LRADC_SRC_YPLUS LRADC_SRC(3)
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#define LRADC_SRC_XMINUS LRADC_SRC(4)
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#define LRADC_SRC_YMINUS LRADC_SRC(5)
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#define LRADC_SRC_VDDIO LRADC_SRC(6)
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#define LRADC_SRC_BATTERY LRADC_SRC(7)
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#define LRADC_SRC_PMOS_THIN LRADC_SRC(8)
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#define LRADC_SRC_NMOS_THIN LRADC_SRC(9)
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#define LRADC_SRC_NMOS_THICK LRADC_SRC(10)
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#define LRADC_SRC_PMOS_THICK LRADC_SRC(11)
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#define LRADC_SRC_PMOS_THICK LRADC_SRC(11)
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#if IMX233_SUBTARGET >= 3700
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#define LRADC_SRC_USB_DP LRADC_SRC(12)
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#define LRADC_SRC_USB_DN LRADC_SRC(13)
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#define LRADC_SRC_VBG LRADC_SRC(14)
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#define LRADC_SRC_5V LRADC_SRC(15)
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#endif
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/* frequency of the delay counter */
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#define LRADC_DELAY_FREQ 2000
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/* maximum value of a sample (without accumulation), defines the precision */
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#define LRADC_MAX_VALUE 4096
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typedef void (*lradc_irq_fn_t)(int chan);
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void imx233_lradc_init(void);
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void imx233_lradc_setup_source(int channel, bool div2, int src);
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/* variant of the above only for accumulation changes */
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void imx233_lradc_setup_sampling(int channel, bool acc, int nr_samples);
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void imx233_lradc_setup_delay(int dchan, int trigger_lradc, int trigger_delays,
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int loop_count, int delay);
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void imx233_lradc_clear_channel_irq(int channel);
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bool imx233_lradc_read_channel_irq(int channel);
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void imx233_lradc_enable_channel_irq(int channel, bool enable);
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/* a non-null cb will enable the icoll interrupt, a null one will disable it
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* NOTE the channel irq is automatically cleared */
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void imx233_lradc_set_channel_irq_callback(int channel, lradc_irq_fn_t cb);
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void imx233_lradc_kick_channel(int channel);
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void imx233_lradc_kick_delay(int dchan);
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void imx233_lradc_wait_channel(int channel);
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int imx233_lradc_read_channel(int channel);
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void imx233_lradc_clear_channel(int channel);
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/* acquire a channel, returns -1 on timeout, channel otherwise
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* the returned channel is garanteed to be able measure source src */
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int imx233_lradc_acquire_channel(int src, int timeout);
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void imx233_lradc_release_channel(int chan);
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// doesn't check that channel is in use!
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void imx233_lradc_reserve_channel(int channel);
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int imx233_lradc_acquire_delay(int timeout);
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// doesn't check that delay channel is in use!
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void imx233_lradc_reserve_delay(int dchannel);
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void imx233_lradc_release_delay(int dchan);
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/* Setup touch x/yminus pull donws and x/yplus pull ups */
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void imx233_lradc_setup_touch(bool xminus_enable, bool yminus_enable,
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bool xplus_enable, bool yplus_enable, bool touch_detect);
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void imx233_lradc_enable_touch_detect_irq(bool enable);
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void imx233_lradc_clear_touch_detect_irq(void);
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bool imx233_lradc_read_touch_detect(void);
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#if IMX233_SUBTARGET >= 3700
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/* enable sensing and return temperature in kelvin,
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* channels needs not to be configured */
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int imx233_lradc_sense_die_temperature(int nmos_chan, int pmos_chan);
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#endif
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/* return *raw* external temperature, might need some transformation
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* channel needs not to be configured */
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int imx233_lradc_sense_ext_temperature(int chan, int sensor);
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void imx233_lradc_setup_battery_conversion(bool automatic, unsigned long scale_factor);
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// read scaled voltage, only available after proper setup
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int imx233_lradc_read_battery_voltage(void);
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#endif /* __lradc_imx233__ */
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