| /************************************************************************************** |
| * drivers/lcd/ssd1289.c |
| * |
| * Generic LCD driver for LCDs based on the Solomon Systech SSD1289 LCD controller. |
| * Think of this as a template for an LCD driver that you will probably have to |
| * customize for any particular LCD hardware. |
| * |
| * Copyright (C) 2012 Gregory Nutt. All rights reserved. |
| * Authors: Gregory Nutt <gnutt@nuttx.org> |
| * |
| * References: SSD1289, Rev 1.3, Apr 2007, Solomon Systech Limited |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * 3. Neither the name NuttX nor the names of its contributors may be |
| * used to endorse or promote products derived from this software |
| * without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
| * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
| * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
| * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS |
| * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
| * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN |
| * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| * POSSIBILITY OF SUCH DAMAGE. |
| * |
| **************************************************************************************/ |
| |
| /************************************************************************************** |
| * Included Files |
| **************************************************************************************/ |
| |
| #include <nuttx/config.h> |
| |
| #include <sys/types.h> |
| #include <stdint.h> |
| #include <stdbool.h> |
| #include <string.h> |
| #include <errno.h> |
| #include <debug.h> |
| |
| #include <nuttx/arch.h> |
| #include <nuttx/spi/spi.h> |
| #include <nuttx/lcd/lcd.h> |
| #include <nuttx/lcd/ssd1289.h> |
| |
| #include "ssd1289.h" |
| |
| #ifdef CONFIG_LCD_SSD1289 |
| |
| /************************************************************************************** |
| * Pre-processor Definitions |
| **************************************************************************************/ |
| /* Configuration **********************************************************************/ |
| |
| /* Check contrast selection */ |
| |
| #if !defined(CONFIG_LCD_MAXCONTRAST) |
| # define CONFIG_LCD_MAXCONTRAST 1 |
| #endif |
| |
| /* Check power setting */ |
| |
| #if !defined(CONFIG_LCD_MAXPOWER) || CONFIG_LCD_MAXPOWER < 1 |
| # define CONFIG_LCD_MAXPOWER 1 |
| #endif |
| |
| #if CONFIG_LCD_MAXPOWER > 255 |
| # error "CONFIG_LCD_MAXPOWER must be less than 256 to fit in uint8_t" |
| #endif |
| |
| /* Check orientation */ |
| |
| #if defined(CONFIG_LCD_PORTRAIT) |
| # if defined(CONFIG_LCD_LANDSCAPE) || defined(CONFIG_LCD_RLANDSCAPE) || defined(CONFIG_LCD_RPORTRAIT) |
| # error "Cannot define both portrait and any other orientations" |
| # endif |
| #elif defined(CONFIG_LCD_RPORTRAIT) |
| # if defined(CONFIG_LCD_LANDSCAPE) || defined(CONFIG_LCD_RLANDSCAPE) |
| # error "Cannot define both rportrait and any other orientations" |
| # endif |
| #elif defined(CONFIG_LCD_LANDSCAPE) |
| # ifdef CONFIG_LCD_RLANDSCAPE |
| # error "Cannot define both landscape and any other orientations" |
| # endif |
| #elif !defined(CONFIG_LCD_RLANDSCAPE) |
| # define CONFIG_LCD_LANDSCAPE 1 |
| #endif |
| |
| /* Define CONFIG_DEBUG_LCD to enable detailed LCD debug output. Verbose debug must |
| * also be enabled. |
| */ |
| |
| #ifndef CONFIG_DEBUG |
| # undef CONFIG_DEBUG_VERBOSE |
| # undef CONFIG_DEBUG_GRAPHICS |
| # undef CONFIG_DEBUG_LCD |
| #endif |
| |
| #ifndef CONFIG_DEBUG_VERBOSE |
| # undef CONFIG_DEBUG_LCD |
| #endif |
| |
| /* Display/Color Properties ***********************************************************/ |
| /* Display Resolution */ |
| |
| #if defined(CONFIG_LCD_LANDSCAPE) || defined(CONFIG_LCD_RLANDSCAPE) |
| # define SSD1289_XRES 320 |
| # define SSD1289_YRES 240 |
| #else |
| # define SSD1289_XRES 240 |
| # define SSD1289_YRES 320 |
| #endif |
| |
| /* Color depth and format */ |
| |
| #define SSD1289_BPP 16 |
| #define SSD1289_COLORFMT FB_FMT_RGB16_565 |
| |
| /* LCD Profiles ***********************************************************************/ |
| /* 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 "LCD profiles" |
| * |
| * 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 code in ssd1289_hwinitialize with your working code. |
| */ |
| |
| #if defined (CONFIG_SSD1289_PROFILE2) |
| # undef SSD1289_USE_SIMPLE_INIT |
| |
| /* PWRCTRL1: AP=smalll-to-medium, DC=Flinex24, BT=+5/-4, DCT=Flinex24 */ |
| |
| # define PWRCTRL1_SETTING \ |
| (SSD1289_PWRCTRL1_AP_SMMED | SSD1289_PWRCTRL1_DC_FLINEx24 | \ |
| SSD1289_PWRCTRL1_BT_p5m4 | SSD1289_PWRCTRL1_DCT_FLINEx24) |
| |
| /* PWRCTRL2: 5.1v */ |
| |
| # define PWRCTRL2_SETTING SSD1289_PWRCTRL2_VRC_5p1V |
| |
| /* PWRCTRL3: x 2.165 |
| * NOTE: Many drivers have bit 8 set which is not defined in the SSD1289 spec. |
| */ |
| |
| # define PWRCTRL3_SETTING SSD1289_PWRCTRL3_VRH_x2p165 |
| |
| /* PWRCTRL4: VDV=9 + VCOMG */ |
| |
| # define PWRCTRL4_SETTING (SSD1289_PWRCTRL4_VDV(9) | SSD1289_PWRCTRL4_VCOMG) |
| |
| /* PWRCTRL5: VCM=56 + NOTP */ |
| |
| # define PWRCTRL5_SETTING (SSD1289_PWRCTRL5_VCM(56) | SSD1289_PWRCTRL5_NOTP) |
| |
| #elif defined (CONFIG_SSD1289_PROFILE3) |
| # undef SSD1289_USE_SIMPLE_INIT |
| |
| /* PWRCTRL1: AP=smalll-to-medium, DC=Flinex24, BT=+5/-4, DCT=Flinex24 */ |
| |
| # define PWRCTRL1_SETTING \ |
| (SSD1289_PWRCTRL1_AP_SMMED | SSD1289_PWRCTRL1_DC_FLINEx24 | \ |
| SSD1289_PWRCTRL1_BT_p5m4 | SSD1289_PWRCTRL1_DCT_FLINEx24) |
| |
| /* PWRCTRL2: 5.1v */ |
| |
| # define PWRCTRL2_SETTING SSD1289_PWRCTRL2_VRC_5p1V |
| |
| /* PWRCTRL3: x 2.165 |
| * NOTE: Many drivers have bit 8 set which is not defined in the SSD1289 spec. |
| */ |
| |
| # define PWRCTRL3_SETTING SSD1289_PWRCTRL3_VRH_x2p165 |
| |
| /* PWRCTRL4: VDV=9 + VCOMG */ |
| |
| # define PWRCTRL4_SETTING (SSD1289_PWRCTRL4_VDV(9) | SSD1289_PWRCTRL4_VCOMG) |
| |
| /* PWRCTRL5: VCM=56 + NOTP */ |
| |
| # define PWRCTRL5_SETTING (SSD1289_PWRCTRL5_VCM(56) | SSD1289_PWRCTRL5_NOTP) |
| |
| #else /* if defined (CONFIG_SSD1289_PROFILE1) */ |
| # undef SSD1289_USE_SIMPLE_INIT |
| # define SSD1289_USE_SIMPLE_INIT 1 |
| |
| /* PWRCTRL1: AP=medium-to-large, DC=Fosc/4, BT=+5/-4, DCT=Fosc/4 */ |
| |
| # define PWRCTRL1_SETTING \ |
| (SSD1289_PWRCTRL1_AP_MEDLG | SSD1289_PWRCTRL1_DC_FOSd4 | \ |
| SSD1289_PWRCTRL1_BT_p5m4 | SSD1289_PWRCTRL1_DCT_FOSd4) |
| |
| /* PWRCTRL2: 5.3v */ |
| |
| # define PWRCTRL2_SETTING SSD1289_PWRCTRL2_VRC_5p3V |
| |
| /* PWRCTRL3: x 2.570 |
| * NOTE: Many drivers have bit 8 set which is not defined in the SSD1289 spec. |
| */ |
| |
| # define PWRCTRL3_SETTING SSD1289_PWRCTRL3_VRH_x2p570 |
| |
| /* PWRCTRL4: VDV=12 + VCOMG */ |
| |
| # define PWRCTRL4_SETTING (SSD1289_PWRCTRL4_VDV(12) | SSD1289_PWRCTRL4_VCOMG) |
| |
| /* PWRCTRL5: VCM=60 + NOTP */ |
| |
| # define PWRCTRL5_SETTING (SSD1289_PWRCTRL5_VCM(60) | SSD1289_PWRCTRL5_NOTP) |
| |
| #endif |
| |
| /* Debug ******************************************************************************/ |
| |
| #ifdef CONFIG_DEBUG_LCD |
| # define lcddbg dbg |
| # define lcdvdbg vdbg |
| #else |
| # define lcddbg(x...) |
| # define lcdvdbg(x...) |
| #endif |
| |
| /************************************************************************************** |
| * Private Type Definition |
| **************************************************************************************/ |
| |
| /* This structure describes the state of this driver */ |
| |
| struct ssd1289_dev_s |
| { |
| /* Publically visible device structure */ |
| |
| struct lcd_dev_s dev; |
| |
| /* Private LCD-specific information follows */ |
| |
| FAR struct ssd1289_lcd_s *lcd; /* The contained platform-specific, LCD interface */ |
| uint8_t power; /* Current power setting */ |
| |
| /* These fields simplify and reduce debug output */ |
| |
| #ifdef CONFIG_DEBUG_LCD |
| bool put; /* Last raster operation was a putrun */ |
| fb_coord_t firstrow; /* First row of the run */ |
| fb_coord_t lastrow; /* Last row of the run */ |
| fb_coord_t col; /* Column of the run */ |
| size_t npixels; /* Length of the run */ |
| #endif |
| |
| /* This is working memory allocated by the LCD driver for each LCD device |
| * and for each color plane. This memory will hold one raster line of data. |
| * The size of the allocated run buffer must therefore be at least |
| * (bpp * xres / 8). Actual alignment of the buffer must conform to the |
| * bitwidth of the underlying pixel type. |
| * |
| * If there are multiple planes, they may share the same working buffer |
| * because different planes will not be operate on concurrently. However, |
| * if there are multiple LCD devices, they must each have unique run buffers. |
| */ |
| |
| uint16_t runbuffer[SSD1289_XRES]; |
| }; |
| |
| /************************************************************************************** |
| * Private Function Protototypes |
| **************************************************************************************/ |
| /* Low Level LCD access */ |
| |
| static void ssd1289_putreg(FAR struct ssd1289_lcd_s *lcd, uint8_t regaddr, |
| uint16_t regval); |
| #ifndef CONFIG_LCD_NOGETRUN |
| static uint16_t ssd1289_readreg(FAR struct ssd1289_lcd_s *lcd, uint8_t regaddr); |
| #endif |
| static inline void ssd1289_gramwrite(FAR struct ssd1289_lcd_s *lcd, uint16_t rgbcolor); |
| #ifndef CONFIG_LCD_NOGETRUN |
| static inline void ssd1289_readsetup(FAR struct ssd1289_lcd_s *lcd, FAR uint16_t *accum); |
| static inline uint16_t ssd1289_gramread(FAR struct ssd1289_lcd_s *lcd, FAR uint16_t *accum); |
| #endif |
| static void ssd1289_setcursor(FAR struct ssd1289_lcd_s *lcd, uint16_t column, |
| uint16_t row); |
| |
| /* LCD Data Transfer Methods */ |
| |
| #if 0 /* Sometimes useful */ |
| static void ssd1289_dumprun(FAR const char *msg, FAR uint16_t *run, size_t npixels); |
| #else |
| # define ssd1289_dumprun(m,r,n) |
| #endif |
| |
| #ifdef CONFIG_DEBUG_LCD |
| static void ssd1289_showrun(FAR struct ssd1289_dev_s *priv, fb_coord_t row, |
| fb_coord_t col, size_t npixels, bool put); |
| #else |
| # define ssd1289_showrun(p,r,c,n,b) |
| #endif |
| |
| static int ssd1289_putrun(fb_coord_t row, fb_coord_t col, FAR const uint8_t *buffer, |
| size_t npixels); |
| static int ssd1289_getrun(fb_coord_t row, fb_coord_t col, FAR uint8_t *buffer, |
| size_t npixels); |
| |
| /* LCD Configuration */ |
| |
| static int ssd1289_getvideoinfo(FAR struct lcd_dev_s *dev, |
| FAR struct fb_videoinfo_s *vinfo); |
| static int ssd1289_getplaneinfo(FAR struct lcd_dev_s *dev, unsigned int planeno, |
| FAR struct lcd_planeinfo_s *pinfo); |
| |
| /* LCD RGB Mapping */ |
| |
| #ifdef CONFIG_FB_CMAP |
| # error "RGB color mapping not supported by this driver" |
| #endif |
| |
| /* Cursor Controls */ |
| |
| #ifdef CONFIG_FB_HWCURSOR |
| # error "Cursor control not supported by this driver" |
| #endif |
| |
| /* LCD Specific Controls */ |
| |
| static int ssd1289_getpower(FAR struct lcd_dev_s *dev); |
| static int ssd1289_setpower(FAR struct lcd_dev_s *dev, int power); |
| static int ssd1289_getcontrast(FAR struct lcd_dev_s *dev); |
| static int ssd1289_setcontrast(FAR struct lcd_dev_s *dev, unsigned int contrast); |
| |
| /* Initialization */ |
| |
| static inline int ssd1289_hwinitialize(FAR struct ssd1289_dev_s *priv); |
| |
| /************************************************************************************** |
| * Private Data |
| **************************************************************************************/ |
| |
| /* This driver can support only a signal SSD1289 device. This is due to an |
| * unfortunate decision made whent he getrun and putrun methods were designed. The |
| * following is the single SSD1289 driver state instance: |
| */ |
| |
| static struct ssd1289_dev_s g_lcddev; |
| |
| /************************************************************************************** |
| * Private Functions |
| **************************************************************************************/ |
| |
| /************************************************************************************** |
| * Name: ssd1289_putreg(lcd, |
| * |
| * Description: |
| * Write to an LCD register |
| * |
| **************************************************************************************/ |
| |
| static void ssd1289_putreg(FAR struct ssd1289_lcd_s *lcd, uint8_t regaddr, uint16_t regval) |
| { |
| /* Set the index register to the register address and write the register contents */ |
| |
| lcd->index(lcd, regaddr); |
| lcd->write(lcd, regval); |
| } |
| |
| /************************************************************************************** |
| * Name: ssd1289_readreg |
| * |
| * Description: |
| * Read from an LCD register |
| * |
| **************************************************************************************/ |
| |
| #ifndef CONFIG_LCD_NOGETRUN |
| static uint16_t ssd1289_readreg(FAR struct ssd1289_lcd_s *lcd, uint8_t regaddr) |
| { |
| /* Set the index register to the register address and read the register contents */ |
| |
| lcd->index(lcd, regaddr); |
| return lcd->read(lcd); |
| } |
| #endif |
| |
| /************************************************************************************** |
| * Name: ssd1289_gramselect |
| * |
| * Description: |
| * Setup to read or write multiple pixels to the GRAM memory |
| * |
| **************************************************************************************/ |
| |
| static inline void ssd1289_gramselect(FAR struct ssd1289_lcd_s *lcd) |
| { |
| lcd->index(lcd, SSD1289_DATA); |
| } |
| |
| /************************************************************************************** |
| * Name: ssd1289_gramwrite |
| * |
| * Description: |
| * Setup to read or write multiple pixels to the GRAM memory |
| * |
| **************************************************************************************/ |
| |
| static inline void ssd1289_gramwrite(FAR struct ssd1289_lcd_s *lcd, uint16_t data) |
| { |
| lcd->write(lcd, data); |
| } |
| |
| /************************************************************************************** |
| * Name: ssd1289_readsetup |
| * |
| * Description: |
| * Prime the operation by reading one pixel from the GRAM memory if necessary for |
| * this LCD type. When reading 16-bit gram data, there may be some shifts in the |
| * returned data: |
| * |
| * - ILI932x: Discard first dummy read; no shift in the return data |
| * |
| **************************************************************************************/ |
| |
| #ifndef CONFIG_LCD_NOGETRUN |
| static inline void ssd1289_readsetup(FAR struct ssd1289_lcd_s *lcd, FAR uint16_t *accum) |
| { |
| /* Read-ahead one pixel */ |
| |
| *accum = lcd->read(lcd); |
| } |
| #endif |
| |
| /************************************************************************************** |
| * Name: ssd1289_gramread |
| * |
| * Description: |
| * Read one correctly aligned pixel from the GRAM memory. Possibly shifting the |
| * data and possibly swapping red and green components. |
| * |
| * - ILI932x: Unknown -- assuming colors are in the color order |
| * |
| **************************************************************************************/ |
| |
| #ifndef CONFIG_LCD_NOGETRUN |
| static inline uint16_t ssd1289_gramread(FAR struct ssd1289_lcd_s *lcd, FAR uint16_t *accum) |
| { |
| /* Read the value (GRAM register already selected) */ |
| |
| return lcd->read(lcd); |
| } |
| #endif |
| |
| /************************************************************************************** |
| * Name: ssd1289_setcursor |
| * |
| * Description: |
| * Set the cursor position. In landscape mode, the "column" is actually the physical |
| * Y position and the "row" is the physical X position. |
| * |
| **************************************************************************************/ |
| |
| static void ssd1289_setcursor(FAR struct ssd1289_lcd_s *lcd, uint16_t column, uint16_t row) |
| { |
| #if defined(CONFIG_LCD_PORTRAIT) || defined(CONFIG_LCD_RPORTRAIT) |
| ssd1289_putreg(lcd, SSD1289_XADDR, column); /* 0-239 */ |
| ssd1289_putreg(lcd, SSD1289_YADDR, row); /* 0-319 */ |
| #elif defined(CONFIG_LCD_LANDSCAPE) || defined(CONFIG_LCD_RLANDSCAPE) |
| ssd1289_putreg(lcd, SSD1289_XADDR, row); /* 0-239 */ |
| ssd1289_putreg(lcd, SSD1289_YADDR, column); /* 0-319 */ |
| #endif |
| } |
| |
| /************************************************************************************** |
| * Name: ssd1289_dumprun |
| * |
| * Description: |
| * Dump the contexts of the run buffer: |
| * |
| * run - The buffer in containing the run read to be dumped |
| * npixels - The number of pixels to dump |
| * |
| **************************************************************************************/ |
| |
| #if 0 /* Sometimes useful */ |
| static void ssd1289_dumprun(FAR const char *msg, FAR uint16_t *run, size_t npixels) |
| { |
| int i, j; |
| |
| syslog("\n%s:\n", msg); |
| for (i = 0; i < npixels; i += 16) |
| { |
| up_putc(' '); |
| syslog(" "); |
| for (j = 0; j < 16; j++) |
| { |
| syslog(" %04x", *run++); |
| } |
| up_putc('\n'); |
| } |
| } |
| #endif |
| |
| /************************************************************************************** |
| * Name: ssd1289_showrun |
| * |
| * Description: |
| * When LCD debug is enabled, try to reduce then amount of ouptut data generated by |
| * ssd1289_putrun and ssd1289_getrun |
| * |
| **************************************************************************************/ |
| |
| #ifdef CONFIG_DEBUG_LCD |
| static void ssd1289_showrun(FAR struct ssd1289_dev_s *priv, fb_coord_t row, |
| fb_coord_t col, size_t npixels, bool put) |
| { |
| fb_coord_t nextrow = priv->lastrow + 1; |
| |
| /* Has anything changed (other than the row is the next row in the sequence)? */ |
| |
| if (put == priv->put && row == nextrow && col == priv->col && |
| npixels == priv->npixels) |
| { |
| /* No, just update the last row */ |
| |
| priv->lastrow = nextrow; |
| } |
| else |
| { |
| /* Yes... then this is the end of the preceding sequence. Output the last run |
| * (if there were more than one run in the sequence). |
| */ |
| |
| if (priv->firstrow != priv->lastrow) |
| { |
| 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 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 */ |