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- /**************************************************************************************
- * 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
- /* 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
- /**************************************************************************************
- * 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(LOG_INFO, "\n%s:\n", msg);
- for (i = 0; i < npixels; i += 16)
- {
- up_putc(' ');
- syslog(LOG_INFO, " ");
- for (j = 0; j < 16; j++)
- {
- syslog(LOG_INFO, " %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)
- {
- lcdinfo("...\n");
- lcdinfo("%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
- */
- lcdinfo("%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);
- lcdinfo("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);
- lcdinfo("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 = (FAR 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)
- {
- lcdinfo("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;
- lcdinfo("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)
- {
- lcdinfo("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)
- {
- lcdinfo("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)
- {
- lcdinfo("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
- {
- lcdwarn("WARNING: 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
- {
- lcderr("ERROR: 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;
- lcdinfo("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 */
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