SAMA5: Integrate touchscreen and ADC drivers into the build

configs/sama5d3x-ek/Kconfig

@@ -42,6 +42,14 @@ config SAMA5_NOR_START
 		option:  If SAMA5_NOR_START is defined, then it will not wait but
 		will, instead, immediately start the program in NOR FLASH.
 
+config SAMA5_TSD_DEVMINOR
+	int "Touchscreen device minor"
+	default 0
+	depends on SAMA5_TSD
+	---help---
+		This touchscreen will be register as /dev/inputN where the value of
+		N is provided by this configuration setting.
+
 config SAMA5_AT25_AUTOMOUNT
 	bool "AT25 serial FLASH auto-mount"
 	default n

configs/sama5d3x-ek/README.txt

@@ -1836,7 +1836,7 @@ Configurations
          nsh> cat /mnt/at24/atest.txt
          This is a test
 
-    13. I2C Tool. NuttX supports an I2C tool at apps/system/i2c that can be
+    14. I2C Tool. NuttX supports an I2C tool at apps/system/i2c that can be
         used to peek and poke I2C devices.  That tool cal be enabled by
         setting the following:
 
@@ -1910,7 +1910,7 @@ Configurations
         Address 0x1a is the WM8904.  Address 0x39 is the SIL9022A. I am
         not sure what is at address 0x3d and 0x60
 
-    14. Networking support via the can be added to NSH be selecting the
+    15. Networking support via the can be added to NSH be selecting the
         following configuration options.  The SAMA5D3x supports two different
         Ethernet MAC peripherals:  (1) The 10/100Base-T EMAC peripheral and
         and (2) the 10/100/1000Base-T GMAC peripheral.  Only the SAMA5D31
@@ -2083,7 +2083,38 @@ Configurations
           This delay will be especially long if the board is not connected to
           a network.
 
+    16. You can enable the touchscreen by modifying the configuration
+        in the following ways:
+
+        System Type:
+          CONFIG_SAMA5_ADC=y                     : ADC support is required
+          CONFIG_SAMA5_TSD=y                     : Enabled touchcreen device support
+          SAMA5_TSD_4WIRE=y                      : 4-Wire interface with pressure
+
+        You might want to tinker with the SWAPXY and THRESHX and THRESHY
+        settings to get the result that you want.
+
+        Drivers:
+          CONFIG_INPUT=y                         : (automatically selected)
+
+        Board Selection:
+           CONFIG_SAMA5_TSD_DEVMINOR=0           : Register as /dev/input0
+
+        Library Support:
+          CONFIG_SCHED_WORKQUEUE=y               : Work queue support required
+
+        These options may also be applied to enable a built-in touchscreen
+        test application:
+
+        Applicaton Configuration:
+          CONFIG_EXAMPLES_TOUCHSCREEN=y          : Enable the touchscreen built-int test
+          CONFIG_EXAMPLES_TOUCHSCREEN_MINOR=0    : To match the board selection
+          CONFIG_EXAMPLES_TOUCHSCREEN_DEVPATH="/dev/input0"
+
+        Defaults should be okay for all related settings.
+
     STATUS:
+
       PCK FREQUENCY
       2013-7-19:  This configuration (as do the others) run at 396MHz.
         The SAMA5D3 can run at 536MHz.  I still need to figure out the

configs/sama5d3x-ek/nsh/defconfig

@@ -43,6 +43,7 @@ CONFIG_RAW_BINARY=y
 # Debug Options
 #
 # CONFIG_DEBUG is not set
+CONFIG_ARCH_HAVE_STACKCHECK=y
 # CONFIG_DEBUG_SYMBOLS is not set
 
 #
@@ -503,7 +504,6 @@ CONFIG_BUILTIN_PROXY_STACKSIZE=1024
 #
 # CONFIG_EXAMPLES_BUTTONS is not set
 # CONFIG_EXAMPLES_CAN is not set
-# CONFIG_SYSTEM_COMPOSITE is not set
 # CONFIG_EXAMPLES_CXXTEST is not set
 # CONFIG_EXAMPLES_DHCPD is not set
 # CONFIG_EXAMPLES_ELF is not set
@@ -551,7 +551,6 @@ CONFIG_EXAMPLES_NSH_CXXINITIALIZE=y
 # CONFIG_EXAMPLES_UDP is not set
 # CONFIG_EXAMPLES_UIP is not set
 # CONFIG_EXAMPLES_USBSERIAL is not set
-# CONFIG_SYSTEM_USBMSC is not set
 # CONFIG_EXAMPLES_USBTERM is not set
 # CONFIG_EXAMPLES_WATCHDOG is not set
 
@@ -669,6 +668,14 @@ CONFIG_NSH_CONSOLE=y
 # System NSH Add-Ons
 #
 
+#
+# USB CDC/ACM Device Commands
+#
+
+#
+# USB Composite Device Commands
+#
+
 #
 # Custom Free Memory Command
 #
@@ -722,6 +729,14 @@ CONFIG_READLINE_ECHO=y
 # USB Monitor
 #
 
+#
+# Stack Monitor
+#
+
+#
+# USB Mass Storage Device Commands
+#
+
 #
 # Zmodem Commands
 #

configs/sama5d3x-ek/src/Makefile

@@ -114,6 +114,10 @@ ifeq ($(CONFIG_ARCH_FPU),y)
 CSRCS += sam_ostest.c
 endif
 
+ifeq ($(CONFIG_SAMA5_TSD),y)
+CSRCS += sam_touchscreen.c
+endif
+
 ifeq ($(CONFIG_ARCH_LEDS),y)
 CSRCS += sam_autoleds.c
 else

configs/sama5d3x-ek/src/sam_touchscreen.c

@@ -0,0 +1,163 @@
+/************************************************************************************
+ * configs/sama5d3-ek/src/sam_touchscreen.c
+ *
+ *   Copyright (C) 2013 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ************************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <debug.h>
+
+#include "sam_adc.h"
+#include "sam_tsd.h"
+#include "sama5d3x-ek.h"
+
+#ifdef CONFIG_SAMA5_TSD
+
+/****************************************************************************
+ * Pre-Processor Definitions
+ ****************************************************************************/
+/* Configuration ************************************************************/
+
+#ifndef CONFIG_INPUT
+#  error "Touchscreen support requires CONFIG_INPUT"
+#endif
+
+#ifndef CONFIG_SAMA5_TSD_DEVMINOR
+#  define CONFIG_SAMA5_TSD_DEVMINOR 0
+#endif
+
+/****************************************************************************
+ * Private Types
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Function Prototypes
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: arch_tcinitialize
+ *
+ * Description:
+ *   Each board that supports a touchscreen device must provide this
+ *   function.  This function is called by application-specific, setup logic
+ *   to configure the touchscreen device.  This function will register the
+ *   driver as /dev/inputN where N is the minor device number.
+ *
+ * Input Parameters:
+ *   minor - The input device minor number
+ *
+ * Returned Value:
+ *   Zero is returned on success.  Otherwise, a negated errno value is
+ *   returned to indicate the nature of the failure.
+ *
+ ****************************************************************************/
+
+int arch_tcinitialize(int minor)
+{
+  struct sam_adc_s *adc;
+  static bool initialized = false;
+  FAR struct spi_dev_s *dev;
+  int ret;
+
+  idbg("initialized:%d minor:%d\n", initialized, minor);
+  DEBUGASSERT(minor == 0);
+
+  /* Since there is no uninitialized logic, this initialization can be
+   * performed only one time.
+   */
+
+  if (!initialized)
+    {
+      /* Initialize the ADC driver */
+
+      adc = sam_adcinitialize();
+      if (!adc)
+        {
+          idbg("ERROR: Failed to initialize the ADC driver\n");
+          return -ENODEV;
+        }
+
+      /* Initialize and register the SPI touchscreen device */
+
+      ret = sam_tsd_register(adc, CONFIG_SAMA5_TSD_DEVMINOR);
+      if (ret < 0)
+        {
+          idbg("ERROR: Failed to register touchscreen device /dev/input%d: %d\n",
+               CONFIG_SAMA5_TSD_DEVMINOR, ret);
+          return -ENODEV;
+        }
+
+      initialized = true;
+    }
+
+  return OK;
+}
+
+/****************************************************************************
+ * Name: arch_tcuninitialize
+ *
+ * Description:
+ *   Each board that supports a touchscreen device must provide this function.
+ *   This function is called by application-specific, setup logic to
+ *   uninitialize the touchscreen device.
+ *
+ * Input Parameters:
+ *   None
+ *
+ * Returned Value:
+ *   None.
+ *
+ ****************************************************************************/
+
+void arch_tcuninitialize(void)
+{
+  /* No support for un-initializing the touchscreen  yet */
+}
+
+#endif /* CONFIG_INPUT_ADS7843E */