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synced 2026-06-04 23:03:27 +08:00
Add very basic support for the Atmel maXTouch touchscreen controller
This commit is contained in:
Gregory Nutt
@@ -128,6 +128,23 @@ config ADS7843E_THRESHY
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endif
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config INPUT_MXT
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bool "Atmel maXTouch Driver"
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default n
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---help---
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Enables support for the Atmel maXTouch driver
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if INPUT_MXT
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config MXT_NPOLLWAITERS
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int "Number poll waiters"
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default 4
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depends on !DISABLE_POLL
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---help---
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Maximum number of threads that can be waiting on poll()
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endif # INPUT_MXT
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config INPUT_STMPE811
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bool "STMicro STMPE811 Driver"
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default n
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@@ -51,6 +51,10 @@ ifeq ($(CONFIG_INPUT_MAX11802),y)
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CSRCS += max11802.c
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endif
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ifeq ($(CONFIG_INPUT_MXT),y)
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CSRCS += mxt.c
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endif
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ifeq ($(CONFIG_INPUT_STMPE811),y)
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CSRCS += stmpe811_base.c
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ifneq ($(CONFIG_INPUT_STMPE811_TSC_DISABLE),y)
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+1752
File diff suppressed because it is too large
Load Diff
+11
-11
@@ -295,7 +295,7 @@ static int tsc2007_sample(FAR struct tsc2007_dev_s *priv,
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int ret = -EAGAIN;
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/* Interrupts me be disabled when this is called to (1) prevent posting
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* of semphores from interrupt handlers, and (2) to prevent sampled data
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* of semaphores from interrupt handlers, and (2) to prevent sampled data
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* from changing until it has been reported.
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*/
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@@ -349,7 +349,7 @@ static int tsc2007_waitsample(FAR struct tsc2007_dev_s *priv,
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int ret;
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/* Interrupts me be disabled when this is called to (1) prevent posting
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* of semphores from interrupt handlers, and (2) to prevent sampled data
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* of semaphores from interrupt handlers, and (2) to prevent sampled data
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* from changing until it has been reported.
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*
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* In addition, we will also disable pre-emption to prevent other threads
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@@ -367,7 +367,7 @@ static int tsc2007_waitsample(FAR struct tsc2007_dev_s *priv,
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sem_post(&priv->devsem);
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/* Try to get the a sample... if we cannot, then wait on the semaphore
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* that is posted when new sample data is availble.
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* that is posted when new sample data is available.
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*/
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while (tsc2007_sample(priv, sample) < 0)
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@@ -699,7 +699,7 @@ static void tsc2007_worker(FAR void *arg)
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if (pendown)
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{
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/* If this is the first (acknowledged) pend down report, then report
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/* If this is the first (acknowledged) pen down report, then report
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* this as the first contact. If contact == CONTACT_DOWN, it will be
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* set to set to CONTACT_MOVE after the contact is first sampled.
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*/
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@@ -726,7 +726,7 @@ static void tsc2007_worker(FAR void *arg)
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priv->sample.id = priv->id;
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priv->penchange = true;
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/* Notify any waiters that nes TSC2007 data is available */
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/* Notify any waiters that new TSC2007 data is available */
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tsc2007_notify(priv);
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@@ -810,7 +810,7 @@ static int tsc2007_open(FAR struct file *filep)
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ret = sem_wait(&priv->devsem);
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if (ret < 0)
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{
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/* This should only happen if the wait was canceled by an signal */
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/* This should only happen if the wait was cancelled by an signal */
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DEBUGASSERT(errno == EINTR);
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return -EINTR;
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@@ -865,7 +865,7 @@ static int tsc2007_close(FAR struct file *filep)
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ret = sem_wait(&priv->devsem);
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if (ret < 0)
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{
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/* This should only happen if the wait was canceled by an signal */
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/* This should only happen if the wait was cancelled by an signal */
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DEBUGASSERT(errno == EINTR);
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return -EINTR;
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@@ -922,7 +922,7 @@ static ssize_t tsc2007_read(FAR struct file *filep, FAR char *buffer, size_t len
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ret = sem_wait(&priv->devsem);
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if (ret < 0)
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{
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/* This should only happen if the wait was canceled by an signal */
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/* This should only happen if the wait was cancelled by an signal */
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DEBUGASSERT(errno == EINTR);
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return -EINTR;
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@@ -990,7 +990,7 @@ static ssize_t tsc2007_read(FAR struct file *filep, FAR char *buffer, size_t len
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{
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if (sample.contact == CONTACT_DOWN)
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{
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/* First contact */
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/* Loss of contact */
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report->point[0].flags = TOUCH_DOWN | TOUCH_ID_VALID | TOUCH_POS_VALID;
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}
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@@ -1038,7 +1038,7 @@ static int tsc2007_ioctl(FAR struct file *filep, int cmd, unsigned long arg)
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ret = sem_wait(&priv->devsem);
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if (ret < 0)
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{
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/* This should only happen if the wait was canceled by an signal */
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/* This should only happen if the wait was cancelled by an signal */
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DEBUGASSERT(errno == EINTR);
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return -EINTR;
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@@ -1114,7 +1114,7 @@ static int tsc2007_poll(FAR struct file *filep, FAR struct pollfd *fds,
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ret = sem_wait(&priv->devsem);
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if (ret < 0)
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{
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/* This should only happen if the wait was canceled by an signal */
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/* This should only happen if the wait was cancelled by an signal */
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DEBUGASSERT(errno == EINTR);
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return -EINTR;
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@@ -107,7 +107,8 @@
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#ifdef __cplusplus
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#define EXTERN extern "C"
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extern "C" {
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extern "C"
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{
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#else
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#define EXTERN extern
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#endif
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@@ -0,0 +1,207 @@
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/****************************************************************************
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* include/nuttx/input/mxt.h
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*
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* Copyright (C) 2014 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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#ifndef __INCLUDE_NUTTX_INPUT_MXT_H
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#define __INCLUDE_NUTTX_INPUT_MXT_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <stdint.h>
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#include <stdbool.h>
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#include <nuttx/i2c.h>
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#if defined(CONFIG_INPUT) && defined(CONFIG_INPUT_MXT)
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/****************************************************************************
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* Pre-Processor Definitions
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****************************************************************************/
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/* Configuration ************************************************************/
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/* Maximum number of threads than can be waiting for POLL events */
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#ifndef CONFIG_MXT_NPOLLWAITERS
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# define CONFIG_MXT_NPOLLWAITERS 2
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#endif
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/* Buttons are not supported */
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#undef CONFIG_MXT_BUTTONS
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/* Check for some required settings. This can save the user a lot of time
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* in getting the right configuration.
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*/
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#ifndef CONFIG_I2C_TRANSFER
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# error "CONFIG_I2C_TRANSFER is required in the I2C configuration"
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#endif
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#ifdef CONFIG_DISABLE_SIGNALS
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# error "Signals are required. CONFIG_DISABLE_SIGNALS must not be selected."
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#endif
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#ifndef CONFIG_SCHED_WORKQUEUE
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# error "Work queue support required. CONFIG_SCHED_WORKQUEUE must be selected."
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#endif
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/* I2C addresses ************************************************************/
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#define MXT_APP_LOW 0x4a
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#define MXT_APP_HIGH 0x4b
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#define MXT_BOOT_LOW 0x24
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#define MXT_BOOT_HIGH 0x25
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/* Helper macros ************************************************************/
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#define MXT_ATTACH(s,isr,arg) ((s)->attach(s,isr,arg))
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#define MXT_DETACH(s) ((s)->attach(s,NULL,NULL))
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#define MXT_ENABLE(s) ((s)->enable(s,true))
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#define MXT_DISABLE(s) ((s)->enable(s,false))
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#define MXT_CLEAR(s) ((s)->clear(s))
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#define MXT_PENDOWN(s) ((s)->pendown(s))
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/****************************************************************************
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* Public Types
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****************************************************************************/
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/* This is the type of the MXT interrupt handler. The lower level code will
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* intercept the interrupt and provide the upper level with the private data
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* that was provided when the interrupt was attached.
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*/
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struct mxt_lower_s;
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typedef CODE int (*mxt_handler_t)(FAR const struct mxt_lower_s *lower,
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FAR void *arg);
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/* A reference to a structure of this type must be passed to the MXT
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* driver. This structure provides information about the configuration
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* of the MXT and provides some board-specific hooks.
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*
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* Memory for this structure is provided by the caller. It is not copied
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* by the driver and is presumed to persist while the driver is active.
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*/
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struct mxt_lower_s
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{
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/* Device characterization */
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uint8_t address; /* 7-bit I2C address (only bits 0-6 used) */
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uint32_t frequency; /* I2C frequency */
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#ifndef CONFIG_MXT_MULTIPLE
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/* If multiple MXT devices are supported, then an IRQ number must
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* be provided for each so that their interrupts can be distinguished.
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*/
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int irq; /* IRQ number received by interrupt handler. */
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#endif
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/* True: Swap X and Y values */
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bool swapxy;
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#ifdef CONFIG_MXT_BUTTONS
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/* Buttons are not currently supported. But if they were we
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* would need to know which which.
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*/
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uint8_t bmask; /* Bit encoded, see MXT_GPIOn_MASK */
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#endif
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/* IRQ/GPIO access callbacks. These operations all hidden behind
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* callbacks to isolate the MXT driver from differences in GPIO
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* interrupt handling by varying boards and MCUs. If possible,
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* interrupts should be configured on both rising and falling edges
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* so that contact and loss-of-contact events can be detected.
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*
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* attach - Attach the MXT interrupt handler to the GPIO interrupt
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* enable - Enable or disable the GPIO interrupt
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* clear - Acknowledge/clear any pending GPIO interrupt
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*/
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int (*attach)(FAR const struct mxt_lower_s *lower, mxt_handler_t isr,
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FAR void *arg);
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void (*enable)(FAR const struct mxt_lower_s *lower, bool enable);
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void (*clear)(FAR const struct mxt_lower_s *lower);
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};
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/****************************************************************************
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* Public Data
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****************************************************************************/
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#ifdef __cplusplus
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#define EXTERN extern "C"
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extern "C"
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{
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#else
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#define EXTERN extern
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#endif
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/****************************************************************************
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* Public Function Prototypes
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****************************************************************************/
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/****************************************************************************
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* Name: mxt_register
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*
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* Description:
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* Configure the maXTouch to use the provided I2C device instance. This
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* will register the driver as /dev/inputN where N is the minor device
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* number
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*
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* Input Parameters:
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* i2c - An I2C driver instance
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* lower - Persistent board configuration data
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* minor - The input device minor number
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*
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* Returned Value:
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* Zero is returned on success. Otherwise, a negated errno value is
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* returned to indicate the nature of the failure.
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*
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****************************************************************************/
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int mxt_register(FAR struct i2c_dev_s *i2c,
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FAR const struct mxt_lower_s *lower, int minor);
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#undef EXTERN
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#ifdef __cplusplus
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}
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#endif
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#endif /* CONFIG_INPUT && CONFIG_INPUT_MXT */
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#endif /* __INCLUDE_NUTTX_INPUT_MXT_H */
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