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1380 lines
43 KiB
1380 lines
43 KiB
/************************************************************************************** |
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* drivers/lcd/ssd1289.c |
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* |
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* Generic LCD driver for LCDs based on the Solomon Systech SSD1289 LCD controller. |
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* Think of this as a template for an LCD driver that you will proably ahve to |
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* customize for any particular LCD hardware. |
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* |
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* Copyright (C) 2012 Gregory Nutt. All rights reserved. |
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* Authors: Gregory Nutt <gnutt@nuttx.org> |
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* |
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* References: SSD1289, Rev 1.3, Apr 2007, Solomon Systech Limited |
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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 <string.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/spi.h> |
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#include <nuttx/lcd/lcd.h> |
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#include <nuttx/lcd/ssd1289.h> |
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#include "ssd1289.h" |
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#ifdef CONFIG_LCD_SSD1289 |
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/************************************************************************************** |
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* Pre-processor Definitions |
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**************************************************************************************/ |
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/* Configuration **********************************************************************/ |
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/* Check contrast selection */ |
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#if !defined(CONFIG_LCD_MAXCONTRAST) |
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# define CONFIG_LCD_MAXCONTRAST 1 |
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#endif |
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/* Check power setting */ |
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#if !defined(CONFIG_LCD_MAXPOWER) || CONFIG_LCD_MAXPOWER < 1 |
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# define CONFIG_LCD_MAXPOWER 1 |
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#endif |
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#if CONFIG_LCD_MAXPOWER > 255 |
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# error "CONFIG_LCD_MAXPOWER must be less than 256 to fit in uint8_t" |
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#endif |
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/* Check orientation */ |
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#if defined(CONFIG_LCD_PORTRAIT) |
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# if defined(CONFIG_LCD_LANDSCAPE) || defined(CONFIG_LCD_RLANDSCAPE) || defined(CONFIG_LCD_RPORTRAIT) |
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# error "Cannot define both portrait and any other orientations" |
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# endif |
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#elif defined(CONFIG_LCD_RPORTRAIT) |
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# if defined(CONFIG_LCD_LANDSCAPE) || defined(CONFIG_LCD_RLANDSCAPE) |
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# error "Cannot define both rportrait and any other orientations" |
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# endif |
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#elif defined(CONFIG_LCD_LANDSCAPE) |
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# ifdef CONFIG_LCD_RLANDSCAPE |
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# error "Cannot define both landscape and any other orientations" |
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# endif |
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#elif !defined(CONFIG_LCD_RLANDSCAPE) |
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# define CONFIG_LCD_LANDSCAPE 1 |
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#endif |
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/* Define CONFIG_DEBUG_LCD to enable detailed LCD debug output. Verbose debug must |
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* also be enabled. |
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*/ |
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#ifndef CONFIG_DEBUG |
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# undef CONFIG_DEBUG_VERBOSE |
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# undef CONFIG_DEBUG_GRAPHICS |
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# undef CONFIG_DEBUG_LCD |
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#endif |
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#ifndef CONFIG_DEBUG_VERBOSE |
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# undef CONFIG_DEBUG_LCD |
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#endif |
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/* Display/Color Properties ***********************************************************/ |
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/* Display Resolution */ |
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#if defined(CONFIG_LCD_LANDSCAPE) || defined(CONFIG_LCD_RLANDSCAPE) |
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# define SSD1289_XRES 320 |
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# define SSD1289_YRES 240 |
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#else |
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# define SSD1289_XRES 240 |
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# define SSD1289_YRES 320 |
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#endif |
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/* Color depth and format */ |
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#define SSD1289_BPP 16 |
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#define SSD1289_COLORFMT FB_FMT_RGB16_565 |
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/* LCD Profiles ***********************************************************************/ |
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/* Many details of the controller initialization must, unfortunately, vary from LCD to |
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* LCD. I have looked at the spec and at three different drivers for LCDs that have |
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* SSD1289 controllers. I have tried to summarize these differences as "LCD profiles" |
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* |
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* Most of the differences between LCDs are nothing more than a few minor bit |
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* settings. The most significant difference betwen LCD drivers in is the |
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* manner in which the LCD is powered up and in how the power controls are set. |
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* My suggestion is that if you have working LCD initialization code, you should |
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* simply replace the code in ssd1289_hwinitialize with your working code. |
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*/ |
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#if defined (CONFIG_SSD1289_PROFILE2) |
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# undef SSD1289_USE_SIMPLE_INIT |
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/* PWRCTRL1: AP=smalll-to-medium, DC=Flinex24, BT=+5/-4, DCT=Flinex24 */ |
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# define PWRCTRL1_SETTING \ |
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(SSD1289_PWRCTRL1_AP_SMMED | SSD1289_PWRCTRL1_DC_FLINEx24 | \ |
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SSD1289_PWRCTRL1_BT_p5m4 | SSD1289_PWRCTRL1_DCT_FLINEx24) |
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/* PWRCTRL2: 5.1v */ |
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# define PWRCTRL2_SETTING SSD1289_PWRCTRL2_VRC_5p1V |
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/* PWRCTRL3: x 2.165 |
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* NOTE: Many drivers have bit 8 set which is not defined in the SSD1289 spec. |
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*/ |
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# define PWRCTRL3_SETTING SSD1289_PWRCTRL3_VRH_x2p165 |
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/* PWRCTRL4: VDV=9 + VCOMG */ |
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# define PWRCTRL4_SETTING (SSD1289_PWRCTRL4_VDV(9) | SSD1289_PWRCTRL4_VCOMG) |
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/* PWRCTRL5: VCM=56 + NOTP */ |
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# define PWRCTRL5_SETTING (SSD1289_PWRCTRL5_VCM(56) | SSD1289_PWRCTRL5_NOTP) |
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#elif defined (CONFIG_SSD1289_PROFILE3) |
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# undef SSD1289_USE_SIMPLE_INIT |
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/* PWRCTRL1: AP=smalll-to-medium, DC=Flinex24, BT=+5/-4, DCT=Flinex24 */ |
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# define PWRCTRL1_SETTING \ |
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(SSD1289_PWRCTRL1_AP_SMMED | SSD1289_PWRCTRL1_DC_FLINEx24 | \ |
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SSD1289_PWRCTRL1_BT_p5m4 | SSD1289_PWRCTRL1_DCT_FLINEx24) |
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/* PWRCTRL2: 5.1v */ |
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# define PWRCTRL2_SETTING SSD1289_PWRCTRL2_VRC_5p1V |
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/* PWRCTRL3: x 2.165 |
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* NOTE: Many drivers have bit 8 set which is not defined in the SSD1289 spec. |
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*/ |
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# define PWRCTRL3_SETTING SSD1289_PWRCTRL3_VRH_x2p165 |
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/* PWRCTRL4: VDV=9 + VCOMG */ |
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# define PWRCTRL4_SETTING (SSD1289_PWRCTRL4_VDV(9) | SSD1289_PWRCTRL4_VCOMG) |
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/* PWRCTRL5: VCM=56 + NOTP */ |
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# define PWRCTRL5_SETTING (SSD1289_PWRCTRL5_VCM(56) | SSD1289_PWRCTRL5_NOTP) |
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#else /* if defined (CONFIG_SSD1289_PROFILE1) */ |
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# undef SSD1289_USE_SIMPLE_INIT |
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# define SSD1289_USE_SIMPLE_INIT 1 |
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/* PWRCTRL1: AP=medium-to-large, DC=Fosc/4, BT=+5/-4, DCT=Fosc/4 */ |
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# define PWRCTRL1_SETTING \ |
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(SSD1289_PWRCTRL1_AP_MEDLG | SSD1289_PWRCTRL1_DC_FOSd4 | \ |
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SSD1289_PWRCTRL1_BT_p5m4 | SSD1289_PWRCTRL1_DCT_FOSd4) |
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/* PWRCTRL2: 5.3v */ |
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# define PWRCTRL2_SETTING SSD1289_PWRCTRL2_VRC_5p3V |
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/* PWRCTRL3: x 2.570 |
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* NOTE: Many drivers have bit 8 set which is not defined in the SSD1289 spec. |
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*/ |
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# define PWRCTRL3_SETTING SSD1289_PWRCTRL3_VRH_x2p570 |
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/* PWRCTRL4: VDV=12 + VCOMG */ |
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# define PWRCTRL4_SETTING (SSD1289_PWRCTRL4_VDV(12) | SSD1289_PWRCTRL4_VCOMG) |
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/* PWRCTRL5: VCM=60 + NOTP */ |
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# define PWRCTRL5_SETTING (SSD1289_PWRCTRL5_VCM(60) | SSD1289_PWRCTRL5_NOTP) |
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#endif |
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/* Debug ******************************************************************************/ |
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#ifdef CONFIG_DEBUG_LCD |
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# define lcddbg dbg |
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# define lcdvdbg vdbg |
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#else |
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# define lcddbg(x...) |
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# define lcdvdbg(x...) |
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#endif |
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/************************************************************************************** |
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* Private Type Definition |
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**************************************************************************************/ |
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/* This structure describes the state of this driver */ |
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struct ssd1289_dev_s |
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{ |
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/* Publically visible device structure */ |
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struct lcd_dev_s dev; |
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/* Private LCD-specific information follows */ |
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FAR struct ssd1289_lcd_s *lcd; /* The contained platform-specific, LCD interface */ |
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uint8_t power; /* Current power setting */ |
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/* These fields simplify and reduce debug output */ |
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#ifdef CONFIG_DEBUG_LCD |
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bool put; /* Last raster operation was a putrun */ |
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fb_coord_t firstrow; /* First row of the run */ |
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fb_coord_t lastrow; /* Last row of the run */ |
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fb_coord_t col; /* Column of the run */ |
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size_t npixels; /* Length of the run */ |
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#endif |
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/* This is working memory allocated by the LCD driver for each LCD device |
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* and for each color plane. This memory will hold one raster line of data. |
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* The size of the allocated run buffer must therefore be at least |
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* (bpp * xres / 8). Actual alignment of the buffer must conform to the |
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* bitwidth of the underlying pixel type. |
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* |
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* If there are multiple planes, they may share the same working buffer |
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* because different planes will not be operate on concurrently. However, |
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* if there are multiple LCD devices, they must each have unique run buffers. |
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*/ |
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uint16_t runbuffer[SSD1289_XRES]; |
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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 ssd1289_putreg(FAR struct ssd1289_lcd_s *lcd, uint8_t regaddr, |
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uint16_t regval); |
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#ifndef CONFIG_LCD_NOGETRUN |
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static uint16_t ssd1289_readreg(FAR struct ssd1289_lcd_s *lcd, uint8_t regaddr); |
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#endif |
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static inline void ssd1289_gramwrite(FAR struct ssd1289_lcd_s *lcd, uint16_t rgbcolor); |
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#ifndef CONFIG_LCD_NOGETRUN |
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static inline void ssd1289_readsetup(FAR struct ssd1289_lcd_s *lcd, FAR uint16_t *accum); |
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static inline uint16_t ssd1289_gramread(FAR struct ssd1289_lcd_s *lcd, FAR uint16_t *accum); |
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#endif |
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static void ssd1289_setcursor(FAR struct ssd1289_lcd_s *lcd, uint16_t column, |
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uint16_t row); |
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/* LCD Data Transfer Methods */ |
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#if 0 /* Sometimes useful */ |
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static void ssd1289_dumprun(FAR const char *msg, FAR uint16_t *run, size_t npixels); |
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#else |
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# define ssd1289_dumprun(m,r,n) |
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#endif |
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#ifdef CONFIG_DEBUG_LCD |
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static void ssd1289_showrun(FAR struct ssd1289_dev_s *priv, fb_coord_t row, |
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fb_coord_t col, size_t npixels, bool put); |
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#else |
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# define ssd1289_showrun(p,r,c,n,b) |
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#endif |
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static int ssd1289_putrun(fb_coord_t row, fb_coord_t col, FAR const uint8_t *buffer, |
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size_t npixels); |
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static int ssd1289_getrun(fb_coord_t row, fb_coord_t col, FAR uint8_t *buffer, |
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size_t npixels); |
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/* LCD Configuration */ |
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static int ssd1289_getvideoinfo(FAR struct lcd_dev_s *dev, |
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FAR struct fb_videoinfo_s *vinfo); |
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static int ssd1289_getplaneinfo(FAR struct lcd_dev_s *dev, unsigned int planeno, |
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FAR struct lcd_planeinfo_s *pinfo); |
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/* LCD RGB Mapping */ |
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#ifdef CONFIG_FB_CMAP |
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# error "RGB color mapping not supported by this driver" |
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#endif |
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/* Cursor Controls */ |
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#ifdef CONFIG_FB_HWCURSOR |
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# error "Cursor control not supported by this driver" |
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#endif |
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/* LCD Specific Controls */ |
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static int ssd1289_getpower(FAR struct lcd_dev_s *dev); |
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static int ssd1289_setpower(FAR struct lcd_dev_s *dev, int power); |
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static int ssd1289_getcontrast(FAR struct lcd_dev_s *dev); |
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static int ssd1289_setcontrast(FAR struct lcd_dev_s *dev, unsigned int contrast); |
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/* Initialization */ |
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static inline int ssd1289_hwinitialize(FAR struct ssd1289_dev_s *priv); |
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/************************************************************************************** |
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* Private Data |
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**************************************************************************************/ |
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/* This driver can support only a signal SSD1289 device. This is due to an |
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* unfortunate decision made whent he getrun and putrun methods were designed. The |
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* following is the single SSD1289 driver state instance: |
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*/ |
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static struct ssd1289_dev_s g_lcddev; |
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/************************************************************************************** |
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* Private Functions |
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**************************************************************************************/ |
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/************************************************************************************** |
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* Name: ssd1289_putreg(lcd, |
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* |
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* Description: |
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* Write to an LCD register |
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* |
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**************************************************************************************/ |
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static void ssd1289_putreg(FAR struct ssd1289_lcd_s *lcd, uint8_t regaddr, uint16_t regval) |
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{ |
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/* Set the index register to the register address and write the register contents */ |
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lcd->index(lcd, regaddr); |
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lcd->write(lcd, regval); |
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} |
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/************************************************************************************** |
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* Name: ssd1289_readreg |
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* |
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* Description: |
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* Read from an LCD register |
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* |
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**************************************************************************************/ |
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#ifndef CONFIG_LCD_NOGETRUN |
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static uint16_t ssd1289_readreg(FAR struct ssd1289_lcd_s *lcd, uint8_t regaddr) |
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{ |
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/* Set the index register to the register address and read the register contents */ |
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lcd->index(lcd, regaddr); |
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return lcd->read(lcd); |
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} |
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#endif |
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/************************************************************************************** |
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* Name: ssd1289_gramselect |
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* |
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* Description: |
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* Setup to read or write multiple pixels to the GRAM memory |
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* |
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**************************************************************************************/ |
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static inline void ssd1289_gramselect(FAR struct ssd1289_lcd_s *lcd) |
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{ |
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lcd->index(lcd, SSD1289_DATA); |
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} |
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/************************************************************************************** |
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* Name: ssd1289_gramwrite |
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* |
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* Description: |
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* Setup to read or write multiple pixels to the GRAM memory |
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* |
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**************************************************************************************/ |
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static inline void ssd1289_gramwrite(FAR struct ssd1289_lcd_s *lcd, uint16_t data) |
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{ |
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lcd->write(lcd, data); |
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} |
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/************************************************************************************** |
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* Name: ssd1289_readsetup |
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* |
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* Description: |
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* Prime the operation by reading one pixel from the GRAM memory if necessary for |
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* this LCD type. When reading 16-bit gram data, there may be some shifts in the |
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* returned data: |
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* |
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* - ILI932x: Discard first dummy read; no shift in the return data |
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* |
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**************************************************************************************/ |
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#ifndef CONFIG_LCD_NOGETRUN |
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static inline void ssd1289_readsetup(FAR struct ssd1289_lcd_s *lcd, FAR uint16_t *accum) |
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{ |
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/* Read-ahead one pixel */ |
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*accum = lcd->read(lcd); |
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} |
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#endif |
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/************************************************************************************** |
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* Name: ssd1289_gramread |
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* |
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* Description: |
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* Read one correctly aligned pixel from the GRAM memory. Possibly shifting the |
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* data and possibly swapping red and green components. |
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* |
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* - ILI932x: Unknown -- assuming colors are in the color order |
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* |
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**************************************************************************************/ |
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#ifndef CONFIG_LCD_NOGETRUN |
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static inline uint16_t ssd1289_gramread(FAR struct ssd1289_lcd_s *lcd, FAR uint16_t *accum) |
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{ |
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/* Read the value (GRAM register already selected) */ |
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return lcd->read(lcd); |
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} |
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#endif |
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/************************************************************************************** |
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* Name: ssd1289_setcursor |
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* |
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* Description: |
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* Set the cursor position. In landscape mode, the "column" is actually the physical |
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* Y position and the "row" is the physical X position. |
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* |
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**************************************************************************************/ |
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static void ssd1289_setcursor(FAR struct ssd1289_lcd_s *lcd, uint16_t column, uint16_t row) |
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{ |
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#if defined(CONFIG_LCD_PORTRAIT) || defined(CONFIG_LCD_RPORTRAIT) |
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ssd1289_putreg(lcd, SSD1289_XADDR, column); /* 0-239 */ |
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ssd1289_putreg(lcd, SSD1289_YADDR, row); /* 0-319 */ |
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#elif defined(CONFIG_LCD_LANDSCAPE) || defined(CONFIG_LCD_RLANDSCAPE) |
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ssd1289_putreg(lcd, SSD1289_XADDR, row); /* 0-239 */ |
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ssd1289_putreg(lcd, SSD1289_YADDR, column); /* 0-319 */ |
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#endif |
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} |
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/************************************************************************************** |
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* Name: ssd1289_dumprun |
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* |
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* Description: |
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* Dump the contexts of the run buffer: |
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* |
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* run - The buffer in containing the run read to be dumped |
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* npixels - The number of pixels to dump |
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* |
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**************************************************************************************/ |
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#if 0 /* Sometimes useful */ |
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static void ssd1289_dumprun(FAR const char *msg, FAR uint16_t *run, size_t npixels) |
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{ |
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int i, j; |
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|
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syslog("\n%s:\n", msg); |
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for (i = 0; i < npixels; i += 16) |
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{ |
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up_putc(' '); |
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syslog(" "); |
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for (j = 0; j < 16; j++) |
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{ |
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syslog(" %04x", *run++); |
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} |
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up_putc('\n'); |
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} |
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} |
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#endif |
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|
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/************************************************************************************** |
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* Name: ssd1289_showrun |
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* |
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* Description: |
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* When LCD debug is enabled, try to reduce then amount of ouptut data generated by |
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* ssd1289_putrun and ssd1289_getrun |
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* |
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**************************************************************************************/ |
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|
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#ifdef CONFIG_DEBUG_LCD |
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static void ssd1289_showrun(FAR struct ssd1289_dev_s *priv, fb_coord_t row, |
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fb_coord_t col, size_t npixels, bool put) |
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{ |
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fb_coord_t nextrow = priv->lastrow + 1; |
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|
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/* Has anything changed (other than the row is the next row in the sequence)? */ |
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|
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if (put == priv->put && row == nextrow && col == priv->col && |
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npixels == priv->npixels) |
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{ |
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/* No, just update the last row */ |
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|
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priv->lastrow = nextrow; |
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} |
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else |
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{ |
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/* Yes... then this is the end of the preceding sequence. Output the last run |
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* (if there were more than one run in the sequence). |
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*/ |
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|
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if (priv->firstrow != priv->lastrow) |
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{ |
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lcddbg("...\n"); |
|
lcddbg("%s row: %d col: %d npixels: %d\n", |
|
priv->put ? "PUT" : "GET", |
|
priv->lastrow, priv->col, priv->npixels); |
|
} |
|
|
|
/* And we are starting a new sequence. Output the first run of the |
|
* new sequence |
|
*/ |
|
|
|
lcddbg("%s row: %d col: %d npixels: %d\n", |
|
put ? "PUT" : "GET", row, col, npixels); |
|
|
|
/* And save information about the run so that we can detect continuations |
|
* of the sequence. |
|
*/ |
|
|
|
priv->put = put; |
|
priv->firstrow = row; |
|
priv->lastrow = row; |
|
priv->col = col; |
|
priv->npixels = npixels; |
|
} |
|
} |
|
#endif |
|
|
|
/************************************************************************************** |
|
* Name: ssd1289_putrun |
|
* |
|
* Description: |
|
* This method can be used to write a partial raster line to the LCD: |
|
* |
|
* row - Starting row to write to (range: 0 <= row < yres) |
|
* col - Starting column to write to (range: 0 <= col <= xres-npixels) |
|
* buffer - The buffer containing the run to be written to the LCD |
|
* npixels - The number of pixels to write to the LCD |
|
* (range: 0 < npixels <= xres-col) |
|
* |
|
**************************************************************************************/ |
|
|
|
static int ssd1289_putrun(fb_coord_t row, fb_coord_t col, FAR const uint8_t *buffer, |
|
size_t npixels) |
|
{ |
|
FAR struct ssd1289_dev_s *priv = &g_lcddev; |
|
FAR struct ssd1289_lcd_s *lcd = priv->lcd; |
|
FAR const uint16_t *src = (FAR const uint16_t*)buffer; |
|
int i; |
|
|
|
/* Buffer must be provided and aligned to a 16-bit address boundary */ |
|
|
|
ssd1289_showrun(priv, row, col, npixels, true); |
|
DEBUGASSERT(buffer && ((uintptr_t)buffer & 1) == 0); |
|
|
|
/* Select the LCD */ |
|
|
|
lcd->select(lcd); |
|
|
|
/* Write the run to GRAM. */ |
|
|
|
#ifdef CONFIG_LCD_LANDSCAPE |
|
/* Convert coordinates -- Here the edge away from the row of buttons on |
|
* the STM3240G-EVAL is used as the top. |
|
*/ |
|
|
|
/* Write the GRAM data, manually incrementing X */ |
|
|
|
for (i = 0; i < npixels; i++) |
|
{ |
|
/* Write the next pixel to this position */ |
|
|
|
ssd1289_setcursor(lcd, col, row); |
|
ssd1289_gramselect(lcd); |
|
ssd1289_gramwrite(lcd, *src); |
|
|
|
/* Increment to the next column */ |
|
|
|
src++; |
|
col++; |
|
} |
|
#elif defined(CONFIG_LCD_RLANDSCAPE) |
|
/* Convert coordinates -- Here the edge next to the row of buttons on |
|
* the STM3240G-EVAL is used as the top. |
|
*/ |
|
|
|
col = (SSD1289_XRES-1) - col; |
|
row = (SSD1289_YRES-1) - row; |
|
|
|
/* Set the cursor position */ |
|
|
|
ssd1289_setcursor(lcd, col, row); |
|
|
|
/* Then write the GRAM data, auto-decrementing X */ |
|
|
|
ssd1289_gramselect(lcd); |
|
for (i = 0; i < npixels; i++) |
|
{ |
|
/* Write the next pixel to this position (auto-decrements to the next column) */ |
|
|
|
ssd1289_gramwrite(lcd, *src); |
|
src++; |
|
} |
|
#elif defined(CONFIG_LCD_PORTRAIT) |
|
/* Convert coordinates. In this configuration, the top of the display is to the left |
|
* of the buttons (if the board is held so that the buttons are at the botton of the |
|
* board). |
|
*/ |
|
|
|
col = (SSD1289_XRES-1) - col; |
|
|
|
/* Then write the GRAM data, manually incrementing Y (which is col) */ |
|
|
|
for (i = 0; i < npixels; i++) |
|
{ |
|
/* Write the next pixel to this position */ |
|
|
|
ssd1289_setcursor(lcd, row, col); |
|
ssd1289_gramselect(lcd); |
|
ssd1289_gramwrite(lcd, *src); |
|
|
|
/* Increment to the next column */ |
|
|
|
src++; |
|
col--; |
|
} |
|
#else /* CONFIG_LCD_RPORTRAIT */ |
|
/* Convert coordinates. In this configuration, the top of the display is to the right |
|
* of the buttons (if the board is held so that the buttons are at the botton of the |
|
* board). |
|
*/ |
|
|
|
row = (SSD1289_YRES-1) - row; |
|
|
|
/* Then write the GRAM data, manually incrementing Y (which is col) */ |
|
|
|
for (i = 0; i < npixels; i++) |
|
{ |
|
/* Write the next pixel to this position */ |
|
|
|
ssd1289_setcursor(lcd, row, col); |
|
ssd1289_gramselect(lcd); |
|
ssd1289_gramwrite(lcd, *src); |
|
|
|
/* Decrement to the next column */ |
|
|
|
src++; |
|
col++; |
|
} |
|
#endif |
|
|
|
/* De-select the LCD */ |
|
|
|
lcd->deselect(lcd); |
|
return OK; |
|
} |
|
|
|
/************************************************************************************** |
|
* Name: ssd1289_getrun |
|
* |
|
* Description: |
|
* This method can be used to read a partial raster line from the LCD: |
|
* |
|
* row - Starting row to read from (range: 0 <= row < yres) |
|
* col - Starting column to read read (range: 0 <= col <= xres-npixels) |
|
* buffer - The buffer in which to return the run read from the LCD |
|
* npixels - The number of pixels to read from the LCD |
|
* (range: 0 < npixels <= xres-col) |
|
* |
|
**************************************************************************************/ |
|
|
|
static int ssd1289_getrun(fb_coord_t row, fb_coord_t col, FAR uint8_t *buffer, |
|
size_t npixels) |
|
{ |
|
#ifndef CONFIG_LCD_NOGETRUN |
|
FAR struct ssd1289_dev_s *priv = &g_lcddev; |
|
FAR struct ssd1289_lcd_s *lcd = priv->lcd; |
|
FAR uint16_t *dest = (FAR uint16_t*)buffer; |
|
uint16_t accum; |
|
int i; |
|
|
|
/* Buffer must be provided and aligned to a 16-bit address boundary */ |
|
|
|
ssd1289_showrun(priv, row, col, npixels, false); |
|
DEBUGASSERT(buffer && ((uintptr_t)buffer & 1) == 0); |
|
|
|
/* Select the LCD */ |
|
|
|
lcd->select(lcd); |
|
|
|
/* Read the run from GRAM. */ |
|
|
|
#ifdef CONFIG_LCD_LANDSCAPE |
|
/* Convert coordinates -- Here the edge away from the row of buttons on |
|
* the STM3240G-EVAL is used as the top. |
|
*/ |
|
|
|
for (i = 0; i < npixels; i++) |
|
{ |
|
/* Read the next pixel from this position */ |
|
|
|
ssd1289_setcursor(lcd, row, col); |
|
ssd1289_gramselect(lcd); |
|
ssd1289_readsetup(lcd, &accum); |
|
*dest++ = ssd1289_gramread(lcd, &accum); |
|
|
|
/* Increment to the next column */ |
|
|
|
col++; |
|
} |
|
#elif defined(CONFIG_LCD_RLANDSCAPE) |
|
/* Convert coordinates -- Here the edge next to the row of buttons on |
|
* the STM3240G-EVAL is used as the top. |
|
*/ |
|
|
|
col = (SSD1289_XRES-1) - col; |
|
row = (SSD1289_YRES-1) - row; |
|
|
|
/* Set the cursor position */ |
|
|
|
ssd1289_setcursor(lcd, col, row); |
|
|
|
/* Then read the GRAM data, auto-decrementing Y */ |
|
|
|
ssd1289_gramselect(lcd); |
|
|
|
/* Prime the pump for unaligned read data */ |
|
|
|
ssd1289_readsetup(lcd, &accum); |
|
|
|
for (i = 0; i < npixels; i++) |
|
{ |
|
/* Read the next pixel from this position (autoincrements to the next row) */ |
|
|
|
*dest++ = ssd1289_gramread(lcd, &accum); |
|
} |
|
#elif defined(CONFIG_LCD_PORTRAIT) |
|
/* Convert coordinates. In this configuration, the top of the display is to the left |
|
* of the buttons (if the board is held so that the buttons are at the botton of the |
|
* board). |
|
*/ |
|
|
|
col = (SSD1289_XRES-1) - col; |
|
|
|
/* Then read the GRAM data, manually incrementing Y (which is col) */ |
|
|
|
for (i = 0; i < npixels; i++) |
|
{ |
|
/* Read the next pixel from this position */ |
|
|
|
ssd1289_setcursor(lcd, row, col); |
|
ssd1289_gramselect(lcd); |
|
ssd1289_readsetup(lcd, &accum); |
|
*dest++ = ssd1289_gramread(lcd, &accum); |
|
|
|
/* Increment to the next column */ |
|
|
|
col--; |
|
} |
|
#else /* CONFIG_LCD_RPORTRAIT */ |
|
/* Convert coordinates. In this configuration, the top of the display is to the right |
|
* of the buttons (if the board is held so that the buttons are at the botton of the |
|
* board). |
|
*/ |
|
|
|
row = (SSD1289_YRES-1) - row; |
|
|
|
/* Then write the GRAM data, manually incrementing Y (which is col) */ |
|
|
|
for (i = 0; i < npixels; i++) |
|
{ |
|
/* Write the next pixel to this position */ |
|
|
|
ssd1289_setcursor(lcd, row, col); |
|
ssd1289_gramselect(lcd); |
|
ssd1289_readsetup(lcd, &accum); |
|
*dest++ = ssd1289_gramread(lcd, &accum); |
|
|
|
/* Decrement to the next column */ |
|
|
|
col++; |
|
} |
|
#endif |
|
|
|
/* De-select the LCD */ |
|
|
|
lcd->deselect(lcd); |
|
return OK; |
|
#else |
|
return -ENOSYS; |
|
#endif |
|
} |
|
|
|
/************************************************************************************** |
|
* Name: ssd1289_getvideoinfo |
|
* |
|
* Description: |
|
* Get information about the LCD video controller configuration. |
|
* |
|
**************************************************************************************/ |
|
|
|
static int ssd1289_getvideoinfo(FAR struct lcd_dev_s *dev, |
|
FAR struct fb_videoinfo_s *vinfo) |
|
{ |
|
DEBUGASSERT(dev && vinfo); |
|
lcdvdbg("fmt: %d xres: %d yres: %d nplanes: 1\n", |
|
SSD1289_COLORFMT, SSD1289_XRES, SSD1289_YRES); |
|
|
|
vinfo->fmt = SSD1289_COLORFMT; /* Color format: RGB16-565: RRRR RGGG GGGB BBBB */ |
|
vinfo->xres = SSD1289_XRES; /* Horizontal resolution in pixel columns */ |
|
vinfo->yres = SSD1289_YRES; /* Vertical resolution in pixel rows */ |
|
vinfo->nplanes = 1; /* Number of color planes supported */ |
|
return OK; |
|
} |
|
|
|
/************************************************************************************** |
|
* Name: ssd1289_getplaneinfo |
|
* |
|
* Description: |
|
* Get information about the configuration of each LCD color plane. |
|
* |
|
**************************************************************************************/ |
|
|
|
static int ssd1289_getplaneinfo(FAR struct lcd_dev_s *dev, unsigned int planeno, |
|
FAR struct lcd_planeinfo_s *pinfo) |
|
{ |
|
FAR struct ssd1289_dev_s *priv = (FAR struct ssd1289_dev_s *)dev; |
|
|
|
DEBUGASSERT(dev && pinfo && planeno == 0); |
|
lcdvdbg("planeno: %d bpp: %d\n", planeno, SSD1289_BPP); |
|
|
|
pinfo->putrun = ssd1289_putrun; /* Put a run into LCD memory */ |
|
pinfo->getrun = ssd1289_getrun; /* Get a run from LCD memory */ |
|
pinfo->buffer = (uint8_t*)priv->runbuffer; /* Run scratch buffer */ |
|
pinfo->bpp = SSD1289_BPP; /* Bits-per-pixel */ |
|
return OK; |
|
} |
|
|
|
/************************************************************************************** |
|
* Name: ssd1289_getpower |
|
* |
|
* Description: |
|
* Get the LCD panel power status (0: full off - CONFIG_LCD_MAXPOWER: full on). On |
|
* backlit LCDs, this setting may correspond to the backlight setting. |
|
* |
|
**************************************************************************************/ |
|
|
|
static int ssd1289_getpower(FAR struct lcd_dev_s *dev) |
|
{ |
|
lcdvdbg("power: %d\n", 0); |
|
return g_lcddev.power; |
|
} |
|
|
|
/************************************************************************************** |
|
* Name: ssd1289_poweroff |
|
* |
|
* Description: |
|
* Enable/disable LCD panel power (0: full off - CONFIG_LCD_MAXPOWER: full on). On |
|
* backlit LCDs, this setting may correspond to the backlight setting. |
|
* |
|
**************************************************************************************/ |
|
|
|
static int ssd1289_poweroff(FAR struct ssd1289_lcd_s *lcd) |
|
{ |
|
/* Set the backlight off */ |
|
|
|
lcd->backlight(lcd, 0); |
|
|
|
/* Turn the display off */ |
|
|
|
ssd1289_putreg(lcd, SSD1289_DSPCTRL, 0); |
|
|
|
/* Remember the power off state */ |
|
|
|
g_lcddev.power = 0; |
|
return OK; |
|
} |
|
|
|
/************************************************************************************** |
|
* Name: ssd1289_setpower |
|
* |
|
* Description: |
|
* Enable/disable LCD panel power (0: full off - CONFIG_LCD_MAXPOWER: full on). On |
|
* backlit LCDs, this setting may correspond to the backlight setting. |
|
* |
|
**************************************************************************************/ |
|
|
|
static int ssd1289_setpower(FAR struct lcd_dev_s *dev, int power) |
|
{ |
|
FAR struct ssd1289_dev_s *priv = (FAR struct ssd1289_dev_s *)dev; |
|
FAR struct ssd1289_lcd_s *lcd = priv->lcd; |
|
|
|
lcdvdbg("power: %d\n", power); |
|
DEBUGASSERT((unsigned)power <= CONFIG_LCD_MAXPOWER); |
|
|
|
/* Set new power level */ |
|
|
|
if (power > 0) |
|
{ |
|
/* Set the backlight level */ |
|
|
|
lcd->backlight(lcd, power); |
|
|
|
/* Then turn the display on: |
|
* D=ON(3) CM=0 DTE=1 GON=1 SPT=0 VLE=0 PT=0 |
|
*/ |
|
|
|
ssd1289_putreg(lcd, SSD1289_DSPCTRL, |
|
(SSD1289_DSPCTRL_ON | SSD1289_DSPCTRL_GON | |
|
SSD1289_DSPCTRL_DTE | SSD1289_DSPCTRL_VLE(0))); |
|
|
|
g_lcddev.power = power; |
|
} |
|
else |
|
{ |
|
/* Turn the display off */ |
|
|
|
ssd1289_poweroff(lcd); |
|
} |
|
|
|
return OK; |
|
} |
|
|
|
/************************************************************************************** |
|
* Name: ssd1289_getcontrast |
|
* |
|
* Description: |
|
* Get the current contrast setting (0-CONFIG_LCD_MAXCONTRAST). |
|
* |
|
**************************************************************************************/ |
|
|
|
static int ssd1289_getcontrast(FAR struct lcd_dev_s *dev) |
|
{ |
|
lcdvdbg("Not implemented\n"); |
|
return -ENOSYS; |
|
} |
|
|
|
/************************************************************************************** |
|
* Name: ssd1289_setcontrast |
|
* |
|
* Description: |
|
* Set LCD panel contrast (0-CONFIG_LCD_MAXCONTRAST). |
|
* |
|
**************************************************************************************/ |
|
|
|
static int ssd1289_setcontrast(FAR struct lcd_dev_s *dev, unsigned int contrast) |
|
{ |
|
lcdvdbg("contrast: %d\n", contrast); |
|
return -ENOSYS; |
|
} |
|
|
|
/************************************************************************************** |
|
* Name: ssd1289_hwinitialize |
|
* |
|
* Description: |
|
* Initialize the LCD hardware. |
|
* |
|
**************************************************************************************/ |
|
|
|
static inline int ssd1289_hwinitialize(FAR struct ssd1289_dev_s *priv) |
|
{ |
|
FAR struct ssd1289_lcd_s *lcd = priv->lcd; |
|
#ifndef CONFIG_LCD_NOGETRUN |
|
uint16_t id; |
|
#endif |
|
int ret; |
|
|
|
/* Select the LCD */ |
|
|
|
lcd->select(lcd); |
|
|
|
/* Read the device ID. Skip verification of the device ID is the LCD is |
|
* write-only. What choice do we have? |
|
*/ |
|
|
|
#ifndef CONFIG_LCD_NOGETRUN |
|
id = ssd1289_readreg(lcd, SSD1289_DEVCODE); |
|
if (id != 0) |
|
{ |
|
lcddbg("LCD ID: %04x\n", id); |
|
} |
|
|
|
/* If we could not get the ID, then let's just assume that this is an SSD1289. |
|
* Perhaps we have some early register access issues. This seems to happen. |
|
* But then perhaps we should not even bother to read the device ID at all? |
|
*/ |
|
|
|
else |
|
{ |
|
lcddbg("No LCD ID, assuming SSD1289\n"); |
|
id = SSD1289_DEVCODE_VALUE; |
|
} |
|
|
|
/* Check if the ID is for the SSD1289 */ |
|
|
|
if (id == SSD1289_DEVCODE_VALUE) |
|
#endif |
|
{ |
|
/* LCD controller configuration. Many details of the controller initialization |
|
* must, unfortunately, vary from LCD to LCD. I have looked at the spec and at |
|
* three different drivers for LCDs that have SSD1289 controllers. I have tried |
|
* to summarize these differences as profiles (defined above). Some other |
|
* alternatives are noted below. |
|
* |
|
* Most of the differences between LCDs are nothing more than a few minor bit |
|
* settings. The most significant difference betwen LCD drivers in is the |
|
* manner in which the LCD is powered up and in how the power controls are set. |
|
* My suggestion is that if you have working LCD initialization code, you should |
|
* simply replace the following guesses with your working code. |
|
*/ |
|
|
|
/* Most drivers just enable the oscillator */ |
|
|
|
#ifdef SSD1289_USE_SIMPLE_INIT |
|
ssd1289_putreg(lcd, SSD1289_OSCSTART, SSD1289_OSCSTART_OSCEN); |
|
#else |
|
/* But one goes through a more complex start-up sequence. Something like the |
|
* following: |
|
* |
|
* First, put the display in INTERNAL operation: |
|
* D=INTERNAL(1) CM=0 DTE=0 GON=1 SPT=0 VLE=0 PT=0 |
|
*/ |
|
|
|
ssd1289_putreg(lcd, SSD1289_DSPCTRL, |
|
(SSD1289_DSPCTRL_INTERNAL | SSD1289_DSPCTRL_GON | |
|
SSD1289_DSPCTRL_VLE(0))); |
|
|
|
/* Then enable the oscillator */ |
|
|
|
ssd1289_putreg(lcd, SSD1289_OSCSTART, SSD1289_OSCSTART_OSCEN); |
|
|
|
/* Turn the display on: |
|
* D=ON(3) CM=0 DTE=0 GON=1 SPT=0 VLE=0 PT=0 |
|
*/ |
|
|
|
ssd1289_putreg(lcd, SSD1289_DSPCTRL, |
|
(SSD1289_DSPCTRL_ON | SSD1289_DSPCTRL_GON | |
|
SSD1289_DSPCTRL_VLE(0))); |
|
|
|
/* Take the LCD out of sleep mode */ |
|
|
|
ssd1289_putreg(lcd, SSD1289_SLEEP, 0); |
|
up_mdelay(30); |
|
|
|
/* Turn the display on: |
|
* D=INTERNAL(1) CM=0 DTE=1 GON=1 SPT=0 VLE=0 PT=0 |
|
*/ |
|
|
|
ssd1289_putreg(lcd, SSD1289_DSPCTRL, |
|
(SSD1289_DSPCTRL_ON | SSD1289_DSPCTRL_DTE | |
|
SSD1289_DSPCTRL_GON | SSD1289_DSPCTRL_VLE(0))); |
|
#endif |
|
|
|
/* Set up power control registers. There is a lot of variability |
|
* from LCD-to-LCD in how the power registers are configured. |
|
*/ |
|
|
|
ssd1289_putreg(lcd, SSD1289_PWRCTRL1, PWRCTRL1_SETTING); |
|
ssd1289_putreg(lcd, SSD1289_PWRCTRL2, PWRCTRL2_SETTING); |
|
|
|
/* One driver adds a delay here.. I doubt that this is really necessary. */ |
|
/* up_mdelay(15); */ |
|
|
|
ssd1289_putreg(lcd, SSD1289_PWRCTRL3, PWRCTRL3_SETTING); |
|
ssd1289_putreg(lcd, SSD1289_PWRCTRL4, PWRCTRL4_SETTING); |
|
ssd1289_putreg(lcd, SSD1289_PWRCTRL5, PWRCTRL5_SETTING); |
|
|
|
/* One driver does an odd setting of the the driver output control. |
|
* No idea why. |
|
*/ |
|
#if 0 |
|
ssd1289_putreg(lcd, SSD1289_OUTCTRL, |
|
(SSD1289_OUTCTRL_MUX(12) | SSD1289_OUTCTRL_TB | |
|
SSD1289_OUTCTRL_BGR | SSD1289_OUTCTRL_CAD)); |
|
|
|
/* The same driver does another small delay here */ |
|
|
|
up_mdelay(15); |
|
#endif |
|
|
|
/* After this point, the drivers differ only in some varying register |
|
* bit settings. |
|
*/ |
|
|
|
/* Set the driver output control. |
|
* PORTRAIT MODES: |
|
* MUX=319, TB=1, SM=0, BGR=1, CAD=0, REV=1, RL=0 |
|
* LANDSCAPE MODES: |
|
* MUX=319, TB=0, SM=0, BGR=1, CAD=0, REV=1, RL=0 |
|
*/ |
|
|
|
#if defined(CONFIG_LCD_PORTRAIT) || defined(CONFIG_LCD_RPORTRAIT) |
|
ssd1289_putreg(lcd, SSD1289_OUTCTRL, |
|
(SSD1289_OUTCTRL_MUX(319) | SSD1289_OUTCTRL_TB | |
|
SSD1289_OUTCTRL_BGR | SSD1289_OUTCTRL_REV); |
|
#else |
|
ssd1289_putreg(lcd, SSD1289_OUTCTRL, |
|
(SSD1289_OUTCTRL_MUX(319) | SSD1289_OUTCTRL_BGR | |
|
SSD1289_OUTCTRL_REV)); |
|
#endif |
|
|
|
/* Set the LCD driving AC waveform |
|
* NW=0, WSMD=0, EOR=1, BC=1, ENWD=0, FLD=0 |
|
*/ |
|
|
|
ssd1289_putreg(lcd, SSD1289_ACCTRL, |
|
(SSD1289_ACCTRL_EOR | SSD1289_ACCTRL_BC)); |
|
|
|
/* Take the LCD out of sleep mode (isn't this redundant in the non- |
|
* simple case?) |
|
*/ |
|
|
|
ssd1289_putreg(lcd, SSD1289_SLEEP, 0); |
|
|
|
/* Set entry mode */ |
|
|
|
#if defined(CONFIG_LCD_PORTRAIT) || defined(CONFIG_LCD_RPORTRAIT) |
|
/* LG=0, AM=0, ID=3, TY=2, DMODE=0, WMODE=0, OEDEF=0, TRANS=0, DRM=3 |
|
* Alternative TY=2 (But TY only applies in 262K color mode anyway) |
|
*/ |
|
|
|
ssd1289_putreg(lcd, SSD1289_ENTRY, |
|
(SSD1289_ENTRY_ID_HINCVINC | SSD1289_ENTRY_TY_C | |
|
SSD1289_ENTRY_DMODE_RAM | SSD1289_ENTRY_DFM_65K)); |
|
#else |
|
/* LG=0, AM=1, ID=3, TY=2, DMODE=0, WMODE=0, OEDEF=0, TRANS=0, DRM=3 */ |
|
/* Alternative TY=2 (But TY only applies in 262K color mode anyway) */ |
|
|
|
ssd1289_putreg(lcd, SSD1289_ENTRY, |
|
(SSD1289_ENTRY_AM | SSD1289_ENTRY_ID_HINCVINC | |
|
SSD1289_ENTRY_TY_C | SSD1289_ENTRY_DMODE_RAM | |
|
SSD1289_ENTRY_DFM_65K)); |
|
#endif |
|
|
|
/* Clear compare registers */ |
|
|
|
ssd1289_putreg(lcd, SSD1289_CMP1, 0); |
|
ssd1289_putreg(lcd, SSD1289_CMP2, 0); |
|
|
|
/* One driver puts a huge, 100 millisecond delay here */ |
|
/* up_mdelay(100); */ |
|
|
|
/* Set Horizontal and vertical porch. |
|
* Horizontal porch: 239 pixels per line, delay=28 |
|
* Vertical porch: VBP=3, XFP=0 |
|
*/ |
|
|
|
ssd1289_putreg(lcd, SSD1289_HPORCH, |
|
(28 << SSD1289_HPORCH_HBP_SHIFT) | (239 << SSD1289_HPORCH_XL_SHIFT)); |
|
ssd1289_putreg(lcd, SSD1289_VPORCH, |
|
(3 << SSD1289_VPORCH_VBP_SHIFT) | (0 << SSD1289_VPORCH_XFP_SHIFT)); |
|
|
|
/* Set display control. |
|
* D=ON(3), CM=0 (not 8-color), DTE=1, GON=1, SPT=0, VLE=1 PT=0 |
|
*/ |
|
|
|
ssd1289_putreg(lcd, SSD1289_DSPCTRL, |
|
(SSD1289_DSPCTRL_ON | SSD1289_DSPCTRL_DTE | |
|
SSD1289_DSPCTRL_GON | SSD1289_DSPCTRL_VLE(1))); |
|
|
|
/* Frame cycle control. Alternative: SSD1289_FCYCCTRL_DIV8 */ |
|
|
|
ssd1289_putreg(lcd, SSD1289_FCYCCTRL, 0); |
|
|
|
/* Gate scan start position = 0 */ |
|
|
|
ssd1289_putreg(lcd, SSD1289_GSTART, 0); |
|
|
|
/* Clear vertical scrolling */ |
|
|
|
ssd1289_putreg(lcd, SSD1289_VSCROLL1, 0); |
|
ssd1289_putreg(lcd, SSD1289_VSCROLL2, 0); |
|
|
|
/* Setup window 1 (0-319) */ |
|
|
|
ssd1289_putreg(lcd, SSD1289_W1START, 0); |
|
ssd1289_putreg(lcd, SSD1289_W1END, 319); |
|
|
|
/* Disable window 2 (0-0) */ |
|
|
|
ssd1289_putreg(lcd, SSD1289_W2START, 0); |
|
ssd1289_putreg(lcd, SSD1289_W2END, 0); |
|
|
|
/* Horizontal start and end (0-239) */ |
|
|
|
ssd1289_putreg(lcd, SSD1289_HADDR, |
|
(0 << SSD1289_HADDR_HSA_SHIFT) | (239 << SSD1289_HADDR_HEA_SHIFT)); |
|
|
|
/* Vertical start and end (0-319) */ |
|
|
|
ssd1289_putreg(lcd, SSD1289_VSTART, 0); |
|
ssd1289_putreg(lcd, SSD1289_VEND, 319); |
|
|
|
/* Gamma controls */ |
|
|
|
ssd1289_putreg(lcd, SSD1289_GAMMA1, 0x0707); |
|
ssd1289_putreg(lcd, SSD1289_GAMMA2, 0x0204); /* Alternative: 0x0704 */ |
|
ssd1289_putreg(lcd, SSD1289_GAMMA3, 0x0204); |
|
ssd1289_putreg(lcd, SSD1289_GAMMA4, 0x0502); |
|
ssd1289_putreg(lcd, SSD1289_GAMMA5, 0x0507); |
|
ssd1289_putreg(lcd, SSD1289_GAMMA6, 0x0204); |
|
ssd1289_putreg(lcd, SSD1289_GAMMA7, 0x0204); |
|
ssd1289_putreg(lcd, SSD1289_GAMMA8, 0x0502); |
|
ssd1289_putreg(lcd, SSD1289_GAMMA9, 0x0302); |
|
ssd1289_putreg(lcd, SSD1289_GAMMA10, 0x0302); /* Alternative: 0x1f00 */ |
|
|
|
/* Clear write mask */ |
|
|
|
ssd1289_putreg(lcd, SSD1289_WRMASK1, 0); |
|
ssd1289_putreg(lcd, SSD1289_WRMASK2, 0); |
|
|
|
/* Set frame frequency = 65Hz (This should not be necessary since this |
|
* is the default POR value) |
|
*/ |
|
|
|
ssd1289_putreg(lcd, SSD1289_FFREQ, SSD1289_FFREQ_OSC_FF65); |
|
|
|
/* Set the cursor at the home position and set the index register to |
|
* the gram data register (I can't imagine these are necessary). |
|
*/ |
|
|
|
ssd1289_setcursor(lcd, 0, 0); |
|
ssd1289_gramselect(lcd); |
|
|
|
/* One driver has a 50 msec delay here */ |
|
/* up_mdelay(50); */ |
|
|
|
ret = OK; |
|
} |
|
#ifndef CONFIG_LCD_NOGETRUN |
|
else |
|
{ |
|
lcddbg("Unsupported LCD type\n"); |
|
ret = -ENODEV; |
|
} |
|
#endif |
|
|
|
/* De-select the LCD */ |
|
|
|
lcd->deselect(lcd); |
|
return ret; |
|
} |
|
|
|
/************************************************************************************* |
|
* Public Functions |
|
**************************************************************************************/ |
|
|
|
/************************************************************************************** |
|
* Name: ssd1289_lcdinitialize |
|
* |
|
* Description: |
|
* Initialize the LCD video hardware. The initial state of the LCD is fully |
|
* initialized, display memory cleared, and the LCD ready to use, but with the power |
|
* setting at 0 (full off). |
|
* |
|
**************************************************************************************/ |
|
|
|
FAR struct lcd_dev_s *ssd1289_lcdinitialize(FAR struct ssd1289_lcd_s *lcd) |
|
{ |
|
int ret; |
|
|
|
lcdvdbg("Initializing\n"); |
|
|
|
/* If we ccould support multiple SSD1289 devices, this is where we would allocate |
|
* a new driver data structure... but we can't. Why not? Because of a bad should |
|
* the form of the getrun() and putrun methods. |
|
*/ |
|
|
|
FAR struct ssd1289_dev_s *priv = &g_lcddev; |
|
|
|
/* Initialize the driver data structure */ |
|
|
|
priv->dev.getvideoinfo = ssd1289_getvideoinfo; |
|
priv->dev.getplaneinfo = ssd1289_getplaneinfo; |
|
priv->dev.getpower = ssd1289_getpower; |
|
priv->dev.setpower = ssd1289_setpower; |
|
priv->dev.getcontrast = ssd1289_getcontrast; |
|
priv->dev.setcontrast = ssd1289_setcontrast; |
|
priv->lcd = lcd; |
|
|
|
/* Configure and enable LCD */ |
|
|
|
ret = ssd1289_hwinitialize(priv); |
|
if (ret == OK) |
|
{ |
|
/* Clear the display (setting it to the color 0=black) */ |
|
|
|
ssd1289_clear(&priv->dev, 0); |
|
|
|
/* Turn the display off */ |
|
|
|
ssd1289_poweroff(lcd); |
|
return &g_lcddev.dev; |
|
} |
|
|
|
return NULL; |
|
} |
|
|
|
/************************************************************************************** |
|
* Name: ssd1289_clear |
|
* |
|
* Description: |
|
* This is a non-standard LCD interface just for the stm3240g-EVAL board. Because |
|
* of the various rotations, clearing the display in the normal way by writing a |
|
* sequences of runs that covers the entire display can be very slow. Here the |
|
* display is cleared by simply setting all GRAM memory to the specified color. |
|
* |
|
**************************************************************************************/ |
|
|
|
void ssd1289_clear(FAR struct lcd_dev_s *dev, uint16_t color) |
|
{ |
|
FAR struct ssd1289_dev_s *priv = (FAR struct ssd1289_dev_s *)dev; |
|
FAR struct ssd1289_lcd_s *lcd = priv->lcd; |
|
uint32_t i; |
|
|
|
/* Select the LCD and home the cursor position */ |
|
|
|
lcd->select(lcd); |
|
ssd1289_setcursor(lcd, 0, 0); |
|
|
|
/* Prepare to write GRAM data */ |
|
|
|
ssd1289_gramselect(lcd); |
|
|
|
/* Copy color into all of GRAM. Orientation does not matter in this case. */ |
|
|
|
for (i = 0; i < SSD1289_XRES * SSD1289_YRES; i++) |
|
{ |
|
ssd1289_gramwrite(lcd, color); |
|
} |
|
|
|
/* De-select the LCD */ |
|
|
|
lcd->deselect(lcd); |
|
} |
|
|
|
#endif /* CONFIG_LCD_SSD1289 */
|
|
|