/**************************************************************************** * drivers/lcd/skeleton.c * * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. The * ASF licenses this file to you under the Apache License, Version 2.0 (the * "License"); you may not use this file except in compliance with the * License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the * License for the specific language governing permissions and limitations * under the License. * ****************************************************************************/ /**************************************************************************** * 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_FEATURES # undef CONFIG_DEBUG_INFO # undef CONFIG_DEBUG_GRAPHICS #endif #ifndef CONFIG_DEBUG_INFO # 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 skelerr(format, ...) _err(format, ##__VA_ARGS__) # define skelwarn(format, ...) _warn(format, ##__VA_ARGS__) # define skelinfo(format, ...) _info(format, ##__VA_ARGS__) #else # define skelerr(x...) # define skelwarn(x...) # define skelinfo(x...) #endif /**************************************************************************** * Private Type Definition ****************************************************************************/ /* This structure describes the state of this driver */ struct skel_dev_s { /* Publicly 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 */ ginfo("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 */ ginfo("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); ginfo("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); ginfo("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; ginfo("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; ginfo("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) { ginfo("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) { ginfo("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) { ginfo("Initializing\n"); /* Configure GPIO pins */ #warning "Missing logic" /* Enable clocking */ #warning "Missing logic" /* Configure and enable LCD */ #warning "Missing logic" return &g_lcddev.dev; }