/************************************************************************************** * drivers/lcd/skeleton.c * * Copyright (C) 2015 Gregory Nutt. All rights reserved. * Author: Gregory Nutt * * 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 #include #include #include #include #include #include #include #include #include #include "up_arch.h" /************************************************************************************** * Pre-processor Definitions **************************************************************************************/ /* Configuration **********************************************************************/ /* Verify that all configuration requirements have been met */ /* Debug ******************************************************************************/ /* Define the following to enable register-level debug output */ #undef CONFIG_LCD_SKELDEBUG /* Verbose debug must also be enabled */ #ifndef CONFIG_DEBUG # undef CONFIG_DEBUG_VERBOSE # undef CONFIG_DEBUG_GRAPHICS #endif #ifndef CONFIG_DEBUG_VERBOSE # undef CONFIG_LCD_SKELDEBUG #endif /* Color Properties *******************************************************************/ /* Display Resolution */ #define SKEL_XRES 320 #define SKEL_YRES 240 /* Color depth and format */ #define SKEL_BPP 16 #define SKEL_COLORFMT FB_FMT_RGB16_565 /* Debug ******************************************************************************/ #ifdef CONFIG_LCD_SKELDEBUG # define skeldbg(format, ...) vdbg(format, ##__VA_ARGS__) #else # define skeldbg(x...) #endif /************************************************************************************** * Private Type Definition **************************************************************************************/ /* This structure describes the state of this driver */ struct skel_dev_s { /* Publically visible device structure */ struct lcd_dev_s dev; /* Private LCD-specific information follows */ }; /************************************************************************************** * Private Function Protototypes **************************************************************************************/ /* LCD Data Transfer Methods */ static int skel_putrun(fb_coord_t row, fb_coord_t col, FAR const uint8_t *buffer, size_t npixels); static int skel_getrun(fb_coord_t row, fb_coord_t col, FAR uint8_t *buffer, size_t npixels); /* LCD Configuration */ static int skel_getvideoinfo(FAR struct lcd_dev_s *dev, FAR struct fb_videoinfo_s *vinfo); static int skel_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 skel_getpower(struct lcd_dev_s *dev); static int skel_setpower(struct lcd_dev_s *dev, int power); static int skel_getcontrast(struct lcd_dev_s *dev); static int skel_setcontrast(struct lcd_dev_s *dev, unsigned int contrast); /************************************************************************************** * Private Data **************************************************************************************/ /* 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. */ static uint16_t g_runbuffer[SKEL_XRES]; /* This structure describes the overall LCD video controller */ static const struct fb_videoinfo_s g_videoinfo = { .fmt = SKEL_COLORFMT, /* Color format: RGB16-565: RRRR RGGG GGGB BBBB */ .xres = SKEL_XRES, /* Horizontal resolution in pixel columns */ .yres = SKEL_YRES, /* Vertical resolution in pixel rows */ .nplanes = 1, /* Number of color planes supported */ }; /* This is the standard, NuttX Plane information object */ static const struct lcd_planeinfo_s g_planeinfo = { .putrun = skel_putrun, /* Put a run into LCD memory */ .getrun = skel_getrun, /* Get a run from LCD memory */ .buffer = (FAR uint8_t *)g_runbuffer, /* Run scratch buffer */ .bpp = SKEL_BPP, /* Bits-per-pixel */ }; /* This is the standard, NuttX LCD driver object */ static struct skel_dev_s g_lcddev = { .dev = { /* LCD Configuration */ .getvideoinfo = skel_getvideoinfo, .getplaneinfo = skel_getplaneinfo, /* LCD RGB Mapping -- Not supported */ /* Cursor Controls -- Not supported */ /* LCD Specific Controls */ .getpower = skel_getpower, .setpower = skel_setpower, .getcontrast = skel_getcontrast, .setcontrast = skel_setcontrast, }, }; /************************************************************************************** * Private Functions **************************************************************************************/ /************************************************************************************** * Name: skel_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 skel_putrun(fb_coord_t row, fb_coord_t col, FAR const uint8_t *buffer, size_t npixels) { /* Buffer must be provided and aligned to a 16-bit address boundary */ gvdbg("row: %d col: %d npixels: %d\n", row, col, npixels); DEBUGASSERT(buffer && ((uintptr_t)buffer & 1) == 0); /* Set up to write the run. */ /* Write the run to GRAM. */ #warning "Missing logic" return OK; } /************************************************************************************** * Name: skel_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 skel_getrun(fb_coord_t row, fb_coord_t col, FAR uint8_t *buffer, size_t npixels) { /* Buffer must be provided and aligned to a 16-bit address boundary */ gvdbg("row: %d col: %d npixels: %d\n", row, col, npixels); DEBUGASSERT(buffer && ((uintptr_t)buffer & 1) == 0); #warning "Missing logic" return -ENOSYS; } /************************************************************************************** * Name: skel_getvideoinfo * * Description: * Get information about the LCD video controller configuration. * **************************************************************************************/ static int skel_getvideoinfo(FAR struct lcd_dev_s *dev, FAR struct fb_videoinfo_s *vinfo) { DEBUGASSERT(dev && vinfo); gvdbg("fmt: %d xres: %d yres: %d nplanes: %d\n", g_videoinfo.fmt, g_videoinfo.xres, g_videoinfo.yres, g_videoinfo.nplanes); memcpy(vinfo, &g_videoinfo, sizeof(struct fb_videoinfo_s)); return OK; } /************************************************************************************** * Name: skel_getplaneinfo * * Description: * Get information about the configuration of each LCD color plane. * **************************************************************************************/ static int skel_getplaneinfo(FAR struct lcd_dev_s *dev, unsigned int planeno, FAR struct lcd_planeinfo_s *pinfo) { DEBUGASSERT(dev && pinfo && planeno == 0); gvdbg("planeno: %d bpp: %d\n", planeno, g_planeinfo.bpp); memcpy(pinfo, &g_planeinfo, sizeof(struct lcd_planeinfo_s)); return OK; } /************************************************************************************** * Name: skel_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 skel_getpower(struct lcd_dev_s *dev) { struct skel_dev_s *priv = (struct skel_dev_s *)dev; gvdbg("power: %d\n", 0); #warning "Missing logic" return 0; } /************************************************************************************** * Name: skel_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 skel_setpower(struct lcd_dev_s *dev, int power) { struct skel_dev_s *priv = (struct skel_dev_s *)dev; gvdbg("power: %d\n", power); DEBUGASSERT(power <= CONFIG_LCD_MAXPOWER); /* Set new power level */ #warning "Missing logic" return OK; } /************************************************************************************** * Name: skel_getcontrast * * Description: * Get the current contrast setting (0-CONFIG_LCD_MAXCONTRAST). * **************************************************************************************/ static int skel_getcontrast(struct lcd_dev_s *dev) { gvdbg("Not implemented\n"); #warning "Missing logic" return -ENOSYS; } /************************************************************************************** * Name: skel_setcontrast * * Description: * Set LCD panel contrast (0-CONFIG_LCD_MAXCONTRAST). * **************************************************************************************/ static int skel_setcontrast(struct lcd_dev_s *dev, unsigned int contrast) { gvdbg("contrast: %d\n", contrast); #warning "Missing logic" return -ENOSYS; } /************************************************************************************** * Public Functions **************************************************************************************/ /************************************************************************************** * Name: up_oledinitialize * * 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 *up_oledinitialize(FAR struct spi_dev_s *spi) { gvdbg("Initializing\n"); /* Configure GPIO pins */ #warning "Missing logic" /* Enable clocking */ #warning "Missing logic" /* Configure and enable LCD */ #warning "Missing logic" return &g_lcddev.dev; }