/**************************************************************************** * drivers/lcd/gc9a01.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 #include #include "gc9a01.h" #ifdef CONFIG_LCD_GC9A01 /**************************************************************************** * Pre-processor Definitions ****************************************************************************/ /* Verify that all configuration requirements have been met */ #ifndef CONFIG_LCD_GC9A01_SPIMODE # define CONFIG_LCD_GC9A01_SPIMODE SPIDEV_MODE0 #endif /* SPI frequency */ #ifndef CONFIG_LCD_GC9A01_FREQUENCY # define CONFIG_LCD_GC9A01_FREQUENCY 1000000 #endif /* 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 Resolution */ #if !defined(CONFIG_LCD_GC9A01_XRES) # define CONFIG_LCD_GC9A01_XRES 240 #endif #if !defined(CONFIG_LCD_GC9A01_YRES) # define CONFIG_LCD_GC9A01_YRES 320 #endif #define GC9A01_LUT_SIZE CONFIG_LCD_GC9A01_YRES #if defined(CONFIG_LCD_LANDSCAPE) || defined(CONFIG_LCD_RLANDSCAPE) # define GC9A01_XRES CONFIG_LCD_GC9A01_YRES # define GC9A01_YRES CONFIG_LCD_GC9A01_XRES # define GC9A01_XOFFSET CONFIG_LCD_GC9A01_YOFFSET # define GC9A01_YOFFSET CONFIG_LCD_GC9A01_XOFFSET #else # define GC9A01_XRES CONFIG_LCD_GC9A01_XRES # define GC9A01_YRES CONFIG_LCD_GC9A01_YRES # define GC9A01_XOFFSET CONFIG_LCD_GC9A01_XOFFSET # define GC9A01_YOFFSET CONFIG_LCD_GC9A01_YOFFSET #endif /* Color depth and format */ #ifdef CONFIG_LCD_GC9A01_BPP # if (CONFIG_LCD_GC9A01_BPP == 12) # define GC9A01_BPP 12 # define GC9A01_COLORFMT FB_FMT_RGB12_444 # define GC9A01_BYTESPP 2 # elif (CONFIG_LCD_GC9A01_BPP == 16) # define GC9A01_BPP 16 # define GC9A01_COLORFMT FB_FMT_RGB16_565 # define GC9A01_BYTESPP 2 # else # define GC9A01_BPP 16 # define GC9A01_COLORFMT FB_FMT_RGB16_565 # define GC9A01_BYTESPP 2 # warning "Invalid color depth. Falling back to 16bpp" # endif #endif /**************************************************************************** * Private Types ****************************************************************************/ /* This structure describes the state of this driver */ struct gc9a01_dev_s { /* Publicly visible device structure */ struct lcd_dev_s dev; /* Private LCD-specific information follows */ FAR struct spi_dev_s *spi; /* SPI device */ uint8_t bpp; /* Selected color depth */ uint8_t power; /* Current power setting */ /* 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[GC9A01_LUT_SIZE]; }; /**************************************************************************** * Private Function Protototypes ****************************************************************************/ /* Misc. Helpers */ static void gc9a01_select(FAR struct spi_dev_s *spi, int bits); static void gc9a01_deselect(FAR struct spi_dev_s *spi); static inline void gc9a01_sendcmd(FAR struct gc9a01_dev_s *dev, uint8_t cmd); static void gc9a01_cmddata(FAR struct gc9a01_dev_s *dev, uint8_t cmd, const uint8_t *data, int len); static void gc9a01_init(FAR struct gc9a01_dev_s *dev); static void gc9a01_sleep(FAR struct gc9a01_dev_s *dev, bool sleep); static void gc9a01_setorientation(FAR struct gc9a01_dev_s *dev); static void gc9a01_display(FAR struct gc9a01_dev_s *dev, bool on); static void gc9a01_setarea(FAR struct gc9a01_dev_s *dev, uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1); static void gc9a01_bpp(FAR struct gc9a01_dev_s *dev, int bpp); static void gc9a01_wrram(FAR struct gc9a01_dev_s *dev, FAR const uint8_t *buff, size_t size , size_t skip, size_t count); #ifndef CONFIG_LCD_NOGETRUN static void gc9a01_rdram(FAR struct gc9a01_dev_s *dev, FAR uint16_t *buff, size_t size); #endif static void gc9a01_fill(FAR struct gc9a01_dev_s *dev, uint16_t color); /* LCD Data Transfer Methods */ static int gc9a01_putrun(FAR struct lcd_dev_s *dev, fb_coord_t row, fb_coord_t col, FAR const uint8_t *buffer, size_t npixels); static int gc9a01_putarea(FAR struct lcd_dev_s *dev, fb_coord_t row_start, fb_coord_t row_end, fb_coord_t col_start, fb_coord_t col_end, FAR const uint8_t *buffer, fb_coord_t stride); #ifndef CONFIG_LCD_NOGETRUN static int gc9a01_getrun(FAR struct lcd_dev_s *dev, fb_coord_t row, fb_coord_t col, FAR uint8_t *buffer, size_t npixels); #endif /* LCD Configuration */ static int gc9a01_getvideoinfo(FAR struct lcd_dev_s *dev, FAR struct fb_videoinfo_s *vinfo); static int gc9a01_getplaneinfo(FAR struct lcd_dev_s *dev, unsigned int planeno, FAR struct lcd_planeinfo_s *pinfo); /* LCD Specific Controls */ static int gc9a01_getpower(FAR struct lcd_dev_s *dev); static int gc9a01_setpower(FAR struct lcd_dev_s *dev, int power); static int gc9a01_getcontrast(FAR struct lcd_dev_s *dev); static int gc9a01_setcontrast(FAR struct lcd_dev_s *dev, unsigned int contrast); /**************************************************************************** * Private Data ****************************************************************************/ static struct gc9a01_dev_s g_lcddev; /**************************************************************************** * Private Functions ****************************************************************************/ /**************************************************************************** * Name: gc9a01_select * * Description: * Select the SPI, locking and re-configuring if necessary * * Input Parameters: * spi - Reference to the SPI driver structure * bits - Number of SPI bits * * Returned Value: * None * * Assumptions: * ****************************************************************************/ static void gc9a01_select(FAR struct spi_dev_s *spi, int bits) { /* Select GC9A01 chip (locking the SPI bus in case there are multiple * devices competing for the SPI bus */ SPI_LOCK(spi, true); SPI_SELECT(spi, SPIDEV_DISPLAY(0), true); /* Now make sure that the SPI bus is configured for the GC9A01 (it * might have gotten configured for a different device while unlocked) */ SPI_SETMODE(spi, CONFIG_LCD_GC9A01_SPIMODE); SPI_SETBITS(spi, bits); SPI_SETFREQUENCY(spi, CONFIG_LCD_GC9A01_FREQUENCY); } /**************************************************************************** * Name: gc9a01_deselect * * Description: * De-select the SPI * * Input Parameters: * spi - Reference to the SPI driver structure * * Returned Value: * None * * Assumptions: * ****************************************************************************/ static void gc9a01_deselect(FAR struct spi_dev_s *spi) { /* De-select GC9A01 chip and relinquish the SPI bus. */ SPI_SELECT(spi, SPIDEV_DISPLAY(0), false); SPI_LOCK(spi, false); } /**************************************************************************** * Name: gc9a01_sendcmd * * Description: * Send a command to the driver. * ****************************************************************************/ static inline void gc9a01_sendcmd(FAR struct gc9a01_dev_s *dev, uint8_t cmd) { gc9a01_select(dev->spi, 8); SPI_CMDDATA(dev->spi, SPIDEV_DISPLAY(0), true); SPI_SEND(dev->spi, cmd); SPI_CMDDATA(dev->spi, SPIDEV_DISPLAY(0), false); gc9a01_deselect(dev->spi); } /**************************************************************************** * Name: gc9a01_cmddata * * Description: * Send a command and a series of data to the driver. * ****************************************************************************/ static void gc9a01_cmddata(FAR struct gc9a01_dev_s *dev, uint8_t cmd, const uint8_t *data, int len) { gc9a01_select(dev->spi, 8); SPI_CMDDATA(dev->spi, SPIDEV_DISPLAY(0), true); SPI_SEND(dev->spi, cmd); SPI_CMDDATA(dev->spi, SPIDEV_DISPLAY(0), false); SPI_SNDBLOCK(dev->spi, data, len); gc9a01_deselect(dev->spi); } /**************************************************************************** * Name: gc9a01_init * * Description: * Send gc9a01 internal init commands. * ****************************************************************************/ static void gc9a01_init(FAR struct gc9a01_dev_s *dev) { gc9a01_sendcmd(dev, GC9A01_SWRESET); up_mdelay(120); gc9a01_sendcmd(dev, GC9A01_ENIREG2); gc9a01_cmddata(dev, 0xeb, (const uint8_t *) "\x14", 1); gc9a01_sendcmd(dev, GC9A01_ENIREG1); gc9a01_sendcmd(dev, GC9A01_ENIREG2); gc9a01_cmddata(dev, 0xeb, (const uint8_t *) "\x14", 1); gc9a01_cmddata(dev, 0x84, (const uint8_t *) "\x40", 1); gc9a01_cmddata(dev, 0x85, (const uint8_t *) "\xFF", 1); gc9a01_cmddata(dev, 0x86, (const uint8_t *) "\xFF", 1); gc9a01_cmddata(dev, 0x87, (const uint8_t *) "\xFF", 1); gc9a01_cmddata(dev, 0x88, (const uint8_t *) "\x0A", 1); gc9a01_cmddata(dev, 0x89, (const uint8_t *) "\x21", 1); gc9a01_cmddata(dev, 0x8a, (const uint8_t *) "\x00", 1); gc9a01_cmddata(dev, 0x8b, (const uint8_t *) "\x80", 1); gc9a01_cmddata(dev, 0x8c, (const uint8_t *) "\x01", 1); gc9a01_cmddata(dev, 0x8d, (const uint8_t *) "\x01", 1); gc9a01_cmddata(dev, 0x8e, (const uint8_t *) "\xFF", 1); gc9a01_cmddata(dev, 0x8f, (const uint8_t *) "\xFF", 1); gc9a01_cmddata(dev, 0xb6, (const uint8_t *) "\x00\x00", 2); gc9a01_cmddata(dev, 0x3a, (const uint8_t *) "\x55", 1); gc9a01_cmddata(dev, 0x90, (const uint8_t *) "\x08\x08\x08\x08", 4); gc9a01_cmddata(dev, 0xbd, (const uint8_t *) "\x06", 1); gc9a01_cmddata(dev, 0xbc, (const uint8_t *) "\x00", 1); gc9a01_cmddata(dev, 0xff, (const uint8_t *) "\x60\x01\x04", 3); gc9a01_cmddata(dev, 0xc3, (const uint8_t *) "\x13", 1); gc9a01_cmddata(dev, 0xc4, (const uint8_t *) "\x13", 1); gc9a01_cmddata(dev, 0xc9, (const uint8_t *) "\x22", 1); gc9a01_cmddata(dev, 0xbe, (const uint8_t *) "\x11", 1); gc9a01_cmddata(dev, 0xe1, (const uint8_t *) "\x10\x0E", 2); gc9a01_cmddata(dev, 0xdf, (const uint8_t *) "\x21\x0c\x02", 3); gc9a01_cmddata(dev, 0xf0, (const uint8_t *) "\x45\x09\x08\x08\x26\x2A", 6); gc9a01_cmddata(dev, 0xf1, (const uint8_t *) "\x43\x70\x72\x36\x37\x6F", 6); gc9a01_cmddata(dev, 0xf2, (const uint8_t *) "\x45\x09\x08\x08\x26\x2A", 6); gc9a01_cmddata(dev, 0xf3, (const uint8_t *) "\x43\x70\x72\x36\x37\x6F", 6); gc9a01_cmddata(dev, 0xed, (const uint8_t *) "\x1B\x0B", 2); gc9a01_cmddata(dev, 0xae, (const uint8_t *) "\x77", 1); gc9a01_cmddata(dev, 0xcd, (const uint8_t *) "\x63", 1); gc9a01_cmddata(dev, 0x70, (const uint8_t *) "\x07\x07\x04\x0E\x0F\x09\x07\x08\x03", 9); gc9a01_cmddata(dev, 0xe8, (const uint8_t *) "\x34", 1); gc9a01_cmddata(dev, 0x62, (const uint8_t *) "\x18\x0D\x71\xED\x70\x70\x18\x0F\x71\xEF\x70\x70", 12); gc9a01_cmddata(dev, 0x63, (const uint8_t *) "\x18\x11\x71\xF1\x70\x70\x18\x13\x71\xF3\x70\x70", 12); gc9a01_cmddata(dev, 0x64, (const uint8_t *) "\x28\x29\xF1\x01\xF1\x00\x07", 7); gc9a01_cmddata(dev, 0x66, (const uint8_t *) "\x3C\x00\xCD\x67\x45\x45\x10\x00\x00\x00", 10); gc9a01_cmddata(dev, 0x67, (const uint8_t *) "\x00\x3C\x00\x00\x00\x01\x54\x10\x32\x98", 10); gc9a01_cmddata(dev, 0x74, (const uint8_t *) "\x10\x85\x80\x00\x00\x4E\x00", 7); gc9a01_cmddata(dev, 0x98, (const uint8_t *) "\x3e\x07", 2); gc9a01_sendcmd(dev, GC9A01_TEON); up_mdelay(120); } /**************************************************************************** * Name: gc9a01_sleep * * Description: * Sleep or wake up the driver. * ****************************************************************************/ static void gc9a01_sleep(FAR struct gc9a01_dev_s *dev, bool sleep) { gc9a01_sendcmd(dev, sleep ? GC9A01_SLPIN : GC9A01_SLPOUT); up_mdelay(120); } /**************************************************************************** * Name: gc9a01_display * * Description: * Turn on or off the display. * ****************************************************************************/ static void gc9a01_display(FAR struct gc9a01_dev_s *dev, bool on) { gc9a01_sendcmd(dev, on ? GC9A01_DISPON : GC9A01_DISPOFF); gc9a01_sendcmd(dev, GC9A01_INVON); } /**************************************************************************** * Name: gc9a01_setorientation * * Description: * Set screen orientation. * ****************************************************************************/ static void gc9a01_setorientation(FAR struct gc9a01_dev_s *dev) { uint8_t reg = GC9A01_MADCTL_MX; gc9a01_sendcmd(dev, GC9A01_MADCTL); gc9a01_select(dev->spi, 8); #if !defined(CONFIG_LCD_PORTRAIT) || defined(CONFIG_LCD_GC9A01_BGR) # if defined(CONFIG_LCD_RLANDSCAPE) reg = GC9A01_MADCTL_MX | GC9A01_MADCTL_MY | GC9A01_MADCTL_MV; # elif defined(CONFIG_LCD_LANDSCAPE) reg = GC9A01_MADCTL_MV; # elif defined(CONFIG_LCD_RPORTRAIT) reg = GC9A01_MADCTL_MY; # endif # if defined(CONFIG_LCD_GC9A01_BGR) reg |= GC9A01_MADCTL_BGR; # endif #endif SPI_SEND(dev->spi, reg); gc9a01_deselect(dev->spi); } /**************************************************************************** * Name: gc9a01_setarea * * Description: * Set the rectangular area for an upcoming read or write from RAM. * ****************************************************************************/ static void gc9a01_setarea(FAR struct gc9a01_dev_s *dev, uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1) { /* Set row address */ gc9a01_sendcmd(dev, GC9A01_RASET); gc9a01_select(dev->spi, 8); SPI_SEND(dev->spi, (y0 + GC9A01_YOFFSET) >> 8); SPI_SEND(dev->spi, (y0 + GC9A01_YOFFSET) & 0xff); SPI_SEND(dev->spi, (y1 + GC9A01_YOFFSET) >> 8); SPI_SEND(dev->spi, (y1 + GC9A01_YOFFSET) & 0xff); gc9a01_deselect(dev->spi); /* Set column address */ gc9a01_sendcmd(dev, GC9A01_CASET); gc9a01_select(dev->spi, 8); SPI_SEND(dev->spi, (x0 + GC9A01_XOFFSET) >> 8); SPI_SEND(dev->spi, (x0 + GC9A01_XOFFSET) & 0xff); SPI_SEND(dev->spi, (x1 + GC9A01_XOFFSET) >> 8); SPI_SEND(dev->spi, (x1 + GC9A01_XOFFSET) & 0xff); gc9a01_deselect(dev->spi); } /**************************************************************************** * Name: gc9a01_bpp * * Description: * Set the color depth of the device. * ****************************************************************************/ static void gc9a01_bpp(FAR struct gc9a01_dev_s *dev, int bpp) { uint8_t depth; /* Don't send any command if the depth hasn't changed. */ if (dev->bpp != bpp) { depth = bpp / 2 - 3; gc9a01_sendcmd(dev, GC9A01_COLMOD); gc9a01_select(dev->spi, 8); SPI_SEND(dev->spi, depth); gc9a01_deselect(dev->spi); /* Cache the new BPP */ dev->bpp = bpp; } } /**************************************************************************** * Name: gc9a01_wrram * * Description: * Write to the driver's RAM. It is possible to write multiples of size * while skipping some values. * ****************************************************************************/ static void gc9a01_wrram(FAR struct gc9a01_dev_s *dev, FAR const uint8_t *buff, size_t size, size_t skip, size_t count) { size_t i; gc9a01_sendcmd(dev, GC9A01_RAMWR); gc9a01_select(dev->spi, 8); for (i = 0; i < count; i++) { SPI_SNDBLOCK(dev->spi, buff + (i * (size + skip)), size); } gc9a01_deselect(dev->spi); } /**************************************************************************** * Name: gc9a01_rdram * * Description: * Read from the driver's RAM. * ****************************************************************************/ #ifndef CONFIG_LCD_NOGETRUN static void gc9a01_rdram(FAR struct gc9a01_dev_s *dev, FAR uint16_t *buff, size_t size) { gc9a01_sendcmd(dev, GC9A01_RAMRD); gc9a01_select(dev->spi, GC9A01_BYTESPP * 8); SPI_RECVBLOCK(dev->spi, buff, size); gc9a01_deselect(dev->spi); } #endif /**************************************************************************** * Name: gc9a01_fill * * Description: * Fill the display with the specified color. * ****************************************************************************/ static void gc9a01_fill(FAR struct gc9a01_dev_s *dev, uint16_t color) { int i; gc9a01_setarea(dev, 0, 0, GC9A01_XRES - 1, GC9A01_YRES - 1); gc9a01_sendcmd(dev, GC9A01_RAMWR); gc9a01_select(dev->spi, GC9A01_BYTESPP *8); for (i = 0; i < GC9A01_XRES * GC9A01_YRES; i++) { SPI_SEND(dev->spi, color); } gc9a01_deselect(dev->spi); } /**************************************************************************** * Name: gc9a01_putrun * * Description: * This method can be used to write a partial raster line to the LCD: * * dev - The lcd device * 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 gc9a01_putrun(FAR struct lcd_dev_s *dev, fb_coord_t row, fb_coord_t col, FAR const uint8_t *buffer, size_t npixels) { FAR struct gc9a01_dev_s *priv = (FAR struct gc9a01_dev_s *)dev; ginfo("row: %d col: %d npixels: %d\n", row, col, npixels); DEBUGASSERT(buffer && ((uintptr_t)buffer & 1) == 0); gc9a01_setarea(priv, col, row, col + npixels - 1, row); gc9a01_wrram(priv, buffer, npixels, 0, 1); return OK; } /**************************************************************************** * Name: gc9a01_putarea * * Description: * This method can be used to write a partial area to the LCD: * * dev - The lcd device * row_start - Starting row to write to (range: 0 <= row < yres) * row_end - Ending row to write to (range: row_start <= row < yres) * col_start - Starting column to write to (range: 0 <= col <= xres) * col_end - Ending column to write to * (range: col_start <= col_end < xres) * buffer - The buffer containing the area to be written to the LCD * stride - Length of a line in bytes. This parameter may be necessary * to allow the LCD driver to calculate the offset for partial * writes when the buffer needs to be splited for row-by-row * writing. * ****************************************************************************/ static int gc9a01_putarea(FAR struct lcd_dev_s *dev, fb_coord_t row_start, fb_coord_t row_end, fb_coord_t col_start, fb_coord_t col_end, FAR const uint8_t *buffer, fb_coord_t stride) { FAR struct gc9a01_dev_s *priv = (FAR struct gc9a01_dev_s *)dev; size_t cols = col_end - col_start + 1; size_t rows = row_end - row_start + 1; size_t row_size = cols * (priv->bpp >> 3); ginfo("row_start: %d row_end: %d col_start: %d col_end: %d\n", row_start, row_end, col_start, col_end); DEBUGASSERT(buffer && ((uintptr_t)buffer & 1) == 0); gc9a01_setarea(priv, col_start, row_start, col_end, row_end); /* If the stride is the same of the row, a single SPI transfer is enough. * That is always true for lcddev. For framebuffer, that indicates a full * screen or full row update. */ if (stride == row_size) { /* simpler case, we can just send the whole buffer */ ginfo("Using full screen/full row mode\n"); gc9a01_wrram(priv, buffer, rows * row_size, 0, 1); } else { /* We have to go row by row */ ginfo("Falling-back to row by row mode\n"); gc9a01_wrram(priv, buffer, row_size, stride - row_size, rows); } return OK; } /**************************************************************************** * Name: gc9a01_getrun * * Description: * This method can be used to read a partial raster line from the LCD: * * dev - The lcd device * 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) * ****************************************************************************/ #ifndef CONFIG_LCD_NOGETRUN static int gc9a01_getrun(FAR struct lcd_dev_s *dev, fb_coord_t row, fb_coord_t col, FAR uint8_t *buffer, size_t npixels) { FAR struct gc9a01_dev_s *priv = (FAR struct gc9a01_dev_s *)dev; FAR uint16_t *dest = (FAR uint16_t *)buffer; ginfo("row: %d col: %d npixels: %d\n", row, col, npixels); DEBUGASSERT(buffer && ((uintptr_t)buffer & 1) == 0); gc9a01_setarea(priv, col, row, col + npixels - 1, row); gc9a01_rdram(priv, dest, npixels); return OK; } #endif /**************************************************************************** * Name: gc9a01_getvideoinfo * * Description: * Get information about the LCD video controller configuration. * ****************************************************************************/ static int gc9a01_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", GC9A01_COLORFMT, GC9A01_XRES, GC9A01_YRES); vinfo->fmt = GC9A01_COLORFMT; /* Color format: RGB16-565: RRRR RGGG GGGB BBBB */ vinfo->xres = GC9A01_XRES; /* Horizontal resolution in pixel columns */ vinfo->yres = GC9A01_YRES; /* Vertical resolution in pixel rows */ vinfo->nplanes = 1; /* Number of color planes supported */ return OK; } /**************************************************************************** * Name: gc9a01_getplaneinfo * * Description: * Get information about the configuration of each LCD color plane. * ****************************************************************************/ static int gc9a01_getplaneinfo(FAR struct lcd_dev_s *dev, unsigned int planeno, FAR struct lcd_planeinfo_s *pinfo) { FAR struct gc9a01_dev_s *priv = (FAR struct gc9a01_dev_s *)dev; DEBUGASSERT(dev && pinfo && planeno == 0); lcdinfo("planeno: %d bpp: %d\n", planeno, GC9A01_BPP); pinfo->putrun = gc9a01_putrun; /* Put a run into LCD memory */ pinfo->putarea = gc9a01_putarea; /* Put an area into LCD */ #ifndef CONFIG_LCD_NOGETRUN pinfo->getrun = gc9a01_getrun; /* Get a run from LCD memory */ #endif pinfo->buffer = (FAR uint8_t *)priv->runbuffer; /* Run scratch buffer */ pinfo->bpp = priv->bpp; /* Bits-per-pixel */ pinfo->dev = dev; /* The lcd device */ return OK; } /**************************************************************************** * Name: gc9a01_getpower ****************************************************************************/ static int gc9a01_getpower(FAR struct lcd_dev_s *dev) { FAR struct gc9a01_dev_s *priv = (FAR struct gc9a01_dev_s *)dev; lcdinfo("power: %d\n", priv->power); return priv->power; } /**************************************************************************** * Name: gc9a01_setpower ****************************************************************************/ static int gc9a01_setpower(FAR struct lcd_dev_s *dev, int power) { FAR struct gc9a01_dev_s *priv = (FAR struct gc9a01_dev_s *)dev; lcdinfo("power: %d\n", power); DEBUGASSERT((unsigned)power <= CONFIG_LCD_MAXPOWER); /* Set new power level */ if (power > 0) { /* Turn on the display */ gc9a01_display(priv, true); /* Save the power */ priv->power = power; } else { /* Turn off the display */ gc9a01_display(priv, false); /* Save the power */ priv->power = 0; } return OK; } /**************************************************************************** * Name: gc9a01_getcontrast * * Description: * Get the current contrast setting (0-CONFIG_LCD_MAXCONTRAST). * ****************************************************************************/ static int gc9a01_getcontrast(FAR struct lcd_dev_s *dev) { lcdinfo("Not implemented\n"); return -ENOSYS; } /**************************************************************************** * Name: gc9a01_setcontrast * * Description: * Set LCD panel contrast (0-CONFIG_LCD_MAXCONTRAST). * ****************************************************************************/ static int gc9a01_setcontrast(FAR struct lcd_dev_s *dev, unsigned int contrast) { lcdinfo("contrast: %d\n", contrast); return -ENOSYS; } /**************************************************************************** * Public Functions ****************************************************************************/ /**************************************************************************** * Name: gc9a01_initialize * * Description: * Initialize the GC9A01 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 == sleep mode). * * Returned Value: * * On success, this function returns a reference to the LCD object for * the specified LCD. NULL is returned on any failure. * ****************************************************************************/ FAR struct lcd_dev_s *gc9a01_lcdinitialize(FAR struct spi_dev_s *spi) { FAR struct gc9a01_dev_s *priv = &g_lcddev; /* Initialize the driver data structure */ priv->dev.getvideoinfo = gc9a01_getvideoinfo; priv->dev.getplaneinfo = gc9a01_getplaneinfo; priv->dev.getpower = gc9a01_getpower; priv->dev.setpower = gc9a01_setpower; priv->dev.getcontrast = gc9a01_getcontrast; priv->dev.setcontrast = gc9a01_setcontrast; priv->spi = spi; /* Init the hardware and clear the display */ gc9a01_init(priv); gc9a01_sleep(priv, false); gc9a01_bpp(priv, GC9A01_BPP); gc9a01_setorientation(priv); gc9a01_display(priv, true); gc9a01_fill(priv, 0xffff); return &priv->dev; } #endif /* CONFIG_LCD_GC9A01 */