66565a69a7
avr: hc: mips: codestyle fixes
* avr: codestyle fixes
After the board restructuration is time for codestyle cleanup
Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
* hc: codestyle fixes
After the board restructuration is time for codestyle cleanup
Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
* mips: codestyle fixes
After the board restructuration is time for codestyle cleanup
Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
Approved-by: Gregory Nutt <gnutt@nuttx.org>
537 lines
17 KiB
C
537 lines
17 KiB
C
/****************************************************************************
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* boards/mips/pic32mx/pic32mx7mmb/src/pic32_mio283qt2.c
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*
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* Interface definition for the MI0283QT-2 LCD
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* from Multi-Inno Technology Co., Ltd.
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* This LCD is based on the Himax HX8347-D LCD controller.
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*
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* Copyright (C) 2012, 2015 Gregory Nutt. All rights reserved.
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* Authors: 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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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <sys/types.h>
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#include <stdint.h>
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#include <stdbool.h>
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#include <errno.h>
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#include <debug.h>
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#include <nuttx/arch.h>
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#include <nuttx/board.h>
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#include <nuttx/lcd/lcd.h>
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#include <nuttx/lcd/mio283qt2.h>
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#include <arch/board/board.h>
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#include "up_arch.h"
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#include "pic32mx.h"
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#include "pic32mx-pmp.h"
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#include "pic32mx7mmb.h"
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/* Configuration ************************************************************/
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#if defined(CONFIG_LCD_MIO283QT2) && !defined(CONFIG_PIC32MX_PMP)
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# error "CONFIG_PIC32MX_PMP is required to use the LCD"
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#endif
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/* PIC32MX7MMB LCD Hardware Definitions *************************************/
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/* --- ---------------------------------- -------------------- ------------------------
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* PIN CONFIGURATIONS SIGNAL NAME ON-BOARD CONNECTIONS
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* (Family Data Sheet Table 1-1) (PIC32MX7 Schematic)
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* --- ---------------------------------- -------------------- ------------------------
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* 6 RC1/T2CK LCD_RST TFT display
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* 43 PMA1/AETXD3/AN14/ERXD2/PMALH/RB14 LCD-CS# TFT display, HDR2 pin 3
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* 77 OC3/RD2 LCD_BLED LCD backlight LED
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* 44 PMA0/AETXD2/AN15/CN12/ERXD3/OCFB/ LCD-RS TFT display
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* PMALL/RB15
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*
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* 34 PMA13/AN10/RB10/CVREFOUT LCD-YD TFT display
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* 35 PMA12/AETXERR/AN11/ERXERR/RB11 LCD-XR TFT display
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* 41 PMA11/AECRS/AN12/ERXD0/RB12 LCD-YU TFT display
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* 42 PMA10/AECOL/AN13/ERXD1/RB13 LCD-XL TFT display
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*
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* 93 PMD0/RE0 PMPD0 TFT display, HDR1 pin 18
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* 94 PMD1/RE1 PMPD1 TFT display, HDR1 pin 17
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* 98 PMD2/RE2 PMPD2 TFT display, HDR1 pin 16
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* 99 PMD3/RE3 PMPD3 TFT display, HDR1 pin 15
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* 100 PMD4/RE4 PMPD4 TFT display, HDR1 pin 14
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* 3 PMD5/RE5 PMPD5 TFT display, HDR1 pin 13
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* 4 PMD6/RE6 PMPD6 TFT display, HDR1 pin 12
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* 5 PMD7/RE7 PMPD7 TFT display, HDR1 pin 11
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* 90 PMD8/C2RX/RG0 PMPD8 TFT display, HDR1 pin 10
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* 89 PMD9/C2TX/ETXERR/RG1 PMPD9 TFT display, HDR1 pin 9
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* 88 PMD10/C1TX/ETXD0/RF1 PMPD10 TFT display, HDR1 pin 8
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* 87 PMD11/C1RX/ETXD1/RF0 PMPD11 TFT display, HDR1 pin 7
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* 79 PMD12/ETXD2/IC5/RD12 PMPD12 TFT display, HDR1 pin 6
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* 80 PMD13/CN19/ETXD3/RD13 PMPD13 TFT display, HDR1 pin 5
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* 83 PMD14/CN15/ETXEN/RD6 PMPD14 TFT display, HDR1 pin 4
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* 84 PMD15/CN16/ETXCLK/RD7 PMPD15 TFT display, HDR1 pin 3
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*
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* 82 CN14/PMRD/RD5 PMPRD
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* 81 CN13/OC5/PMWR/RD4 PMPWR
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*/
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/* RC1, Reset -- Low value holds in reset */
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#define GPIO_LCD_RST (GPIO_OUTPUT|GPIO_VALUE_ZERO|GPIO_PORTC|GPIO_PIN1)
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/* RB14, LCD select -- Low value selects LCD */
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#define GPIO_LCD_CS (GPIO_OUTPUT|GPIO_VALUE_ONE|GPIO_PORTB|GPIO_PIN14)
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/* RD2, Backlight -- Low value turns off */
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#define GPIO_LCD_BLED (GPIO_OUTPUT|GPIO_VALUE_ZERO|GPIO_PORTD|GPIO_PIN2)
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/* RB15, RS -- High values selects data */
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#define GPIO_LCD_RS (GPIO_OUTPUT|GPIO_VALUE_ZERO|GPIO_PORTB|GPIO_PIN15)
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#ifdef CONFIG_LCD_MIO283QT2
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/****************************************************************************
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* Private Type Definition
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****************************************************************************/
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struct pic32mx7mmb_dev_s
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{
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struct mio283qt2_lcd_s dev; /* The externally visible part of the driver */
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bool data; /* true=data selected */
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bool selected; /* true=LCD selected */
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bool reading; /* true=We are in a read sequence */
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FAR struct lcd_dev_s *drvr; /* The saved instance of the LCD driver */
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};
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/****************************************************************************
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* Private Function Protototypes
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****************************************************************************/
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/* Low Level LCD access */
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static void pic32mx_select(FAR struct mio283qt2_lcd_s *dev);
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static void pic32mx_deselect(FAR struct mio283qt2_lcd_s *dev);
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static void pic32mx_index(FAR struct mio283qt2_lcd_s *dev, uint8_t index);
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#ifndef CONFIG_MIO283QT2_WRONLY
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static uint16_t pic32mx_read(FAR struct mio283qt2_lcd_s *dev);
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#endif
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static void pic32mx_write(FAR struct mio283qt2_lcd_s *dev, uint16_t data);
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static void pic32mx_backlight(FAR struct mio283qt2_lcd_s *dev, int power);
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/****************************************************************************
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* Private Data
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****************************************************************************/
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/* This is the driver state structure (there is no retained state information) */
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static struct pic32mx7mmb_dev_s g_pic32mx7mmb_lcd =
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{
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{
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.select = pic32mx_select,
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.deselect = pic32mx_deselect,
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.index = pic32mx_index,
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#ifndef CONFIG_MIO283QT2_WRONLY
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.read = pic32mx_read,
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#endif
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.write = pic32mx_write,
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.backlight = pic32mx_backlight
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}
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};
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Name: pic32mx_command
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*
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* Description:
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* Configure to write an LCD command
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*
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****************************************************************************/
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static void pic32mx_command(FAR struct pic32mx7mmb_dev_s *priv)
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{
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/* Low selects command */
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if (priv->data)
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{
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pic32mx_gpiowrite(GPIO_LCD_RS, false);
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priv->data = false; /* Command, not data */
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priv->reading = false; /* No read sequence in progress */
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}
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}
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/****************************************************************************
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* Name: pic32mx_data
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*
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* Description:
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* Configure to read or write LCD data
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*
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****************************************************************************/
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static void pic32mx_data(FAR struct pic32mx7mmb_dev_s *priv)
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{
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/* Hi selects data */
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if (!priv->data)
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{
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pic32mx_gpiowrite(GPIO_LCD_RS, true);
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priv->data = true; /* Data, not command */
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priv->reading = false; /* No read sequence in progress */
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}
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}
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/****************************************************************************
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* Name: pic32mx_data
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*
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* Description:
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* Wait until the PMP is no longer busy
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*
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****************************************************************************/
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static void pic32mx_busywait(void)
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{
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while ((getreg32(PIC32MX_PMP_MODE) & PMP_MODE_BUSY) != 0);
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}
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/****************************************************************************
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* Name: pic32mx_select
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*
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* Description:
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* Select the LCD device
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*
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****************************************************************************/
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static void pic32mx_select(FAR struct mio283qt2_lcd_s *dev)
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{
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FAR struct pic32mx7mmb_dev_s *priv = (FAR struct pic32mx7mmb_dev_s *)dev;
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/* CS low selects */
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if (!priv->selected)
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{
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pic32mx_gpiowrite(GPIO_LCD_CS, false);
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priv->selected = true; /* LCD selected */
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priv->reading = false; /* No read sequence in progress */
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}
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}
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/****************************************************************************
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* Name: pic32mx_deselect
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*
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* Description:
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* De-select the LCD device
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*
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****************************************************************************/
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static void pic32mx_deselect(FAR struct mio283qt2_lcd_s *dev)
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{
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FAR struct pic32mx7mmb_dev_s *priv = (FAR struct pic32mx7mmb_dev_s *)dev;
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/* CS high de-selects */
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if (priv->selected)
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{
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pic32mx_gpiowrite(GPIO_LCD_CS, true);
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priv->selected = false; /* LCD not selected */
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priv->reading = false; /* No read sequence in progress */
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}
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}
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/****************************************************************************
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* Name: pic32mx_index
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*
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* Description:
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* Set the index register
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*
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****************************************************************************/
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static void pic32mx_index(FAR struct mio283qt2_lcd_s *dev, uint8_t index)
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{
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FAR struct pic32mx7mmb_dev_s *priv = (FAR struct pic32mx7mmb_dev_s *)dev;
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/* Make sure that the PMP is not busy from the last transaction.
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* Read data is not available until the busy bit becomes zero.
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*/
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pic32mx_busywait();
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/* Write the 8-bit command (on the 16-bit data bus) */
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pic32mx_command(priv);
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putreg16((uint16_t)index, PIC32MX_PMP_DIN);
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}
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/****************************************************************************
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* Name: pic32mx_read
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*
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* Description:
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* Read LCD data (GRAM data or register contents)
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*
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****************************************************************************/
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#ifndef CONFIG_MIO283QT2_WRONLY
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static uint16_t pic32mx_read(FAR struct mio283qt2_lcd_s *dev)
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{
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FAR struct pic32mx7mmb_dev_s *priv = (FAR struct pic32mx7mmb_dev_s *)dev;
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uint16_t data;
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/* Make sure that the PMP is not busy from the last transaction.
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* Read data is not available until the busy bit becomes zero.
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*/
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pic32mx_busywait();
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/* Read 16-bits of data */
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pic32mx_data(priv);
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data = getreg16(PIC32MX_PMP_DIN);
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/* We need to discard the first 16-bits of data that we read and re-read
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* inorder to get valid data (that is just the way that the PMP works).
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*/
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if (!priv->reading)
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{
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data = getreg16(PIC32MX_PMP_DIN);
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}
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return data;
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}
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#endif
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/****************************************************************************
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* Name: pic32mx_write
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*
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* Description:
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* Write LCD data (GRAM data or register contents)
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*
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****************************************************************************/
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static void pic32mx_write(FAR struct mio283qt2_lcd_s *dev, uint16_t data)
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{
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FAR struct pic32mx7mmb_dev_s *priv = (FAR struct pic32mx7mmb_dev_s *)dev;
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/* Make sure that the PMP is not busy from the last transaction */
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pic32mx_busywait();
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/* Write 16-bits of data */
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pic32mx_data(priv);
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putreg16(data, PIC32MX_PMP_DIN);
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/* We are not in a write sequence */
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priv->reading = false;
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}
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/****************************************************************************
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* Name: pic32mx_write
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*
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* Description:
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* Write LCD data (GRAM data or register contents)
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*
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****************************************************************************/
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static void pic32mx_backlight(FAR struct mio283qt2_lcd_s *dev, int power)
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{
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/* For now, we just control the backlight as a discrete.
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* Pulse width modulation would be required to vary the backlight level.
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* A low value turns the backlight off.
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*/
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pic32mx_gpiowrite(GPIO_LCD_BLED, power > 0);
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}
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: board_lcd_initialize
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*
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* Description:
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* Initialize the LCD video hardware. The initial state of the LCD is fully
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* initialized, display memory cleared, and the LCD ready to use, but with
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* the power setting at 0 (full off).
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*
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****************************************************************************/
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int board_lcd_initialize(void)
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{
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uint32_t regval;
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/* Only initialize the driver once.
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* NOTE: The LCD GPIOs were already configured by pic32mx_lcdinitialize.
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*/
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if (!g_pic32mx7mmb_lcd.drvr)
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{
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lcdinfo("Initializing\n");
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/* Hold the LCD in reset (active low) */
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pic32mx_gpiowrite(GPIO_LCD_RST, false);
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/* Configure PMP to support the LCD */
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putreg32(0, PIC32MX_PMP_MODE);
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putreg32(0, PIC32MX_PMP_AEN);
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putreg32(0, PIC32MX_PMP_CON);
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/* Set LCD timing values, PMP master mode 2, 16-bit mode, no address
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* increment, and no interrupts.
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*/
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regval = (PMP_MODE_WAITE_RD(0) |
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PMP_MODE_WAITM(3) |
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PMP_MODE_WAITB_1TPB |
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PMP_MODE_MODE_MODE2 |
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PMP_MODE_MODE16 |
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PMP_MODE_INCM_NONE |
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PMP_MODE_IRQM_NONE);
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putreg32(regval, PIC32MX_PMP_MODE);
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/* Enable the PMP for reading and writing */
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regval = (PMP_CON_CSF_ADDR1415 | PMP_CON_PTRDEN | PMP_CON_PTWREN |
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PMP_CON_ADRMUX_NONE | PMP_CON_ON);
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putreg32(regval, PIC32MX_PMP_CON);
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/* Bring the LCD out of reset */
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up_mdelay(5);
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pic32mx_gpiowrite(GPIO_LCD_RST, true);
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/* Configure and enable the LCD */
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up_mdelay(50);
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g_pic32mx7mmb_lcd.drvr = mio283qt2_lcdinitialize(&g_pic32mx7mmb_lcd.dev);
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if (!g_pic32mx7mmb_lcd.drvr)
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{
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lcderr("ERROR: mio283qt2_lcdinitialize failed\n");
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return -ENODEV;
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}
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}
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/* Clear the display (setting it to the color 0=black) */
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#if 0 /* Already done in the driver */
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mio283qt2_clear(g_pic32mx7mmb_lcd.drvr, 0);
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#endif
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/* Turn the display off */
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g_pic32mx7mmb_lcd.drvr->setpower(g_pic32mx7mmb_lcd.drvr, 0);
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return OK;
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}
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/****************************************************************************
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* Name: board_lcd_getdev
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*
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* Description:
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* Return a a reference to the LCD object for the specified LCD.
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* This allows support for multiple LCD devices.
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*
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****************************************************************************/
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FAR struct lcd_dev_s *board_lcd_getdev(int lcddev)
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{
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DEBUGASSERT(lcddev == 0);
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return g_pic32mx7mmb_lcd.drvr;
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}
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/****************************************************************************
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* Name: board_lcd_uninitialize
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*
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* Description:
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* Uninitialize the LCD support
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*
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****************************************************************************/
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void board_lcd_uninitialize(void)
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{
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/* Turn the display off */
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g_pic32mx7mmb_lcd.drvr->setpower(g_pic32mx7mmb_lcd.drvr, 0);
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}
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#endif /* CONFIG_LCD_MIO283QT2 */
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/****************************************************************************
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* Name: pic32mx_lcdinitialize
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*
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* Description:
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* Initialize the LCD. This function should be called early in the boot
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* sequendce -- Even if the LCD is not enabled. In that case we should
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* at a minimum at least disable the LCD backlight.
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*
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****************************************************************************/
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void pic32mx_lcdinitialize(void)
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{
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/* Configure all LCD discrete controls. LCD will be left in this state:
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* 1. Held in reset,
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* 2. Not selected,
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* 3. Backlight off,
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* 4. Command selected.
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*/
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#ifdef CONFIG_LCD_MIO283QT2
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pic32mx_configgpio(GPIO_LCD_RST);
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pic32mx_configgpio(GPIO_LCD_CS);
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pic32mx_configgpio(GPIO_LCD_BLED);
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pic32mx_configgpio(GPIO_LCD_RS);
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#else
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/* Just configure the backlight control as an output and turn off the
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* backlight for now.
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*/
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pic32mx_configgpio(GPIO_LCD_BLED);
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#endif
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}
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