text: /****************************************************************************
   * drivers/lcd/ili9225.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 <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/ili9225.h>
  
  #ifdef CONFIG_LCD_ILI9225
  
  /****************************************************************************
   * Pre-processor Definitions
   ****************************************************************************/
  
  /* Verify that all configuration requirements have been met */
  
  #ifndef CONFIG_LCD_ILI9225_SPIMODE
  #  define CONFIG_LCD_ILI9225_SPIMODE SPIDEV_MODE0
  #endif
  
  /* SPI frequency */
  
  #ifndef CONFIG_LCD_ILI9225_FREQUENCY
  #  define CONFIG_LCD_ILI9225_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_ILI9225_XRES)
  #  define CONFIG_LCD_ILI9225_XRES 176
  #endif
  
  #if !defined(CONFIG_LCD_ILI9225_YRES)
  #  define CONFIG_LCD_ILI9225_YRES 220
  #endif
  
  #define ILI9225_LUT_SIZE    CONFIG_LCD_ILI9225_YRES
  
  #if defined(CONFIG_LCD_LANDSCAPE) || defined(CONFIG_LCD_RLANDSCAPE)
  #  define ILI9225_XRES       CONFIG_LCD_ILI9225_YRES
  #  define ILI9225_YRES       CONFIG_LCD_ILI9225_XRES
  #else
  #  define ILI9225_XRES       CONFIG_LCD_ILI9225_XRES
  #  define ILI9225_YRES       CONFIG_LCD_ILI9225_YRES
  #endif
  
  /* Color depth and format */
  
  #ifdef CONFIG_LCD_ILI9225_BPP
  #  if (CONFIG_LCD_ILI9225_BPP == 16)
  #    define ILI9225_BPP           16
  #    define ILI9225_COLORFMT      FB_FMT_RGB16_565
  #    define ILI9225_BYTESPP       2
  #  else
  #    define ILI9225_BPP           16
  #    define ILI9225_COLORFMT      FB_FMT_RGB16_565
  #    define ILI9225_BYTESPP       2
  #    warning "Invalid color depth.  Falling back to 16bpp"
  #  endif
  #endif
  
  /****************************************************************************
   * Private Types
   ****************************************************************************/
  
  /* This structure describes the state of this driver */
  
  struct ili9225_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[ILI9225_LUT_SIZE];
  };
  
  /****************************************************************************
   * Private Function Protototypes
   ****************************************************************************/
  
  /* Misc. Helpers */
  
  static void ili9225_select(FAR struct spi_dev_s *spi, int bits);
  static void ili9225_deselect(FAR struct spi_dev_s *spi);
  
  static inline void ili9225_sendcmd(FAR struct ili9225_dev_s *dev,
                                      uint16_t cmd);
  static inline void ili9225_writereg(FAR struct ili9225_dev_s *dev,
                                      uint16_t reg, uint16_t data);
  static void ili9225_display(FAR struct ili9225_dev_s *dev, bool on);
  static void ili9225_setarea(FAR struct ili9225_dev_s *dev,
                             uint16_t x0, uint16_t y0,
                             uint16_t x1, uint16_t y1);
  static void ili9225_bpp(FAR struct ili9225_dev_s *dev, int bpp);
  static void ili9225_wrram(FAR struct ili9225_dev_s *dev,
                           FAR const uint16_t *buff, size_t size);
  #ifndef CONFIG_LCD_NOGETRUN
  static void ili9225_rdram(FAR struct ili9225_dev_s *dev,
                           FAR uint16_t *buff, size_t size);
  #endif
  static void ili9225_fill(FAR struct ili9225_dev_s *dev, uint16_t color);
  
  /* LCD Data Transfer Methods */
  
  static int ili9225_putrun(fb_coord_t row, fb_coord_t col,
                           FAR const uint8_t *buffer, size_t npixels);
  #ifndef CONFIG_LCD_NOGETRUN
  static int ili9225_getrun(fb_coord_t row, fb_coord_t col,
                           FAR uint8_t *buffer, size_t npixels);
  #endif
  
  /* LCD Configuration */
  
  static int ili9225_getvideoinfo(FAR struct lcd_dev_s *dev,
                                 FAR struct fb_videoinfo_s *vinfo);
  static int ili9225_getplaneinfo(FAR struct lcd_dev_s *dev,
                                 unsigned int planeno,
                                 FAR struct lcd_planeinfo_s *pinfo);
  
  /* LCD Specific Controls */
  
  static int ili9225_getpower(FAR struct lcd_dev_s *dev);
  static int ili9225_setpower(FAR struct lcd_dev_s *dev, int power);
  
  /****************************************************************************
   * Private Data
   ****************************************************************************/
  
  static struct ili9225_dev_s g_lcddev;
  
  /****************************************************************************
   * Private Functions
   ****************************************************************************/
  
  /****************************************************************************
   * Name: ili9225_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 ili9225_select(FAR struct spi_dev_s *spi, int bits)
  {
    /* Select ILI9225 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 ILI9225 (it
     * might have gotten configured for a different device while unlocked)
     */
  
    SPI_SETMODE(spi, CONFIG_LCD_ILI9225_SPIMODE);
    SPI_SETBITS(spi, bits);
    SPI_SETFREQUENCY(spi, CONFIG_LCD_ILI9225_FREQUENCY);
  }
  
  /****************************************************************************
   * Name: ili9225_deselect
   *
   * Description:
   *   De-select the SPI
   *
   * Input Parameters:
   *   spi  - Reference to the SPI driver structure
   *
   * Returned Value:
   *   None
   *
   * Assumptions:
   *
   ****************************************************************************/
  
  static void ili9225_deselect(FAR struct spi_dev_s *spi)
  {
    /* De-select ILI9225 chip and relinquish the SPI bus. */
  
    SPI_SELECT(spi, SPIDEV_DISPLAY(0), false);
    SPI_LOCK(spi, false);
  }
  
  /****************************************************************************
   * Name: ili9225_sendcmd
   *
   * Description:
   *   Write data into register.
   *
   ****************************************************************************/
  
  static inline void ili9225_writereg(FAR struct ili9225_dev_s *dev,
                                      uint16_t reg, uint16_t data)
  {
    ili9225_select(dev->spi, ILI9225_BYTESPP * 8);
    SPI_CMDDATA(dev->spi, SPIDEV_DISPLAY(0), true);
    SPI_SEND(dev->spi, reg);
    SPI_CMDDATA(dev->spi, SPIDEV_DISPLAY(0), false);
    SPI_SEND(dev->spi, data);
    ili9225_deselect(dev->spi);
  }
  
  /****************************************************************************
   * Name: ili9225_sendcmd
   *
   * Description:
   *   Send a data to the driver.
   *
   ****************************************************************************/
  
  static inline void ili9225_sendcmd(FAR struct ili9225_dev_s *dev,
                                     uint16_t cmd)
  {
    ili9225_select(dev->spi, ILI9225_BYTESPP * 8);
    SPI_CMDDATA(dev->spi, SPIDEV_DISPLAY(0), true);
    SPI_SEND(dev->spi, cmd);
    SPI_CMDDATA(dev->spi, SPIDEV_DISPLAY(0), false);
    ili9225_deselect(dev->spi);
  }
  
  /****************************************************************************
   * Name: ili9225_display
   *
   * Description:
   *   Turn on or off the display.
   *
   ****************************************************************************/
  
  static void ili9225_display(FAR struct ili9225_dev_s *dev, bool on)
  {
    if (!on)
      {
        /* Start turn off sequence */
  
        ili9225_writereg(dev, ILI9225_DISP_CTRL1, ILI9225_DISP_CTRL1_GON |
                                                  ILI9225_DISP_CTRL1_D(2));
        up_mdelay(20);
        ili9225_writereg(dev, ILI9225_DISP_CTRL1, 0);
        up_mdelay(20);
        ili9225_writereg(dev, ILI9225_POWER_CTRL1, ILI9225_POWER_CTRL1_SAP(0));
        ili9225_writereg(dev, ILI9225_POWER_CTRL2, ~ILI9225_POWER_CTRL2_PON);
        ili9225_writereg(dev, ILI9225_POWER_CTRL5, 0);
      }
    else
      {
        /* Turn on sequence and settings */
  
        ili9225_writereg(dev, ILI9225_POWER_CTRL2, ILI9225_POWER_CTRL2_VC(8) |
                                                   ILI9225_POWER_CTRL2_VC_EN
                                                   );
        ili9225_writereg(dev, ILI9225_POWER_CTRL3, ILI9225_POWER_CTRL3_DC3(1) |
                                                   ILI9225_POWER_CTRL3_DC2(2) |
                                                   ILI9225_POWER_CTRL3_DC1(1) |
                                                   ILI9225_POWER_CTRL3_BT(6)
                                                   );
        ili9225_writereg(dev, ILI9225_POWER_CTRL4,
                              ILI9225_POWER_CTRL4_GVD(111)
                              );
        ili9225_writereg(dev, ILI9225_POWER_CTRL5,
                              ILI9225_POWER_CTRL5_VML(95) |
                              ILI9225_POWER_CTRL5_VCM(9)  |
                              ILI9225_POWER_CTRL5_VCOMG
                              );
        ili9225_writereg(dev, ILI9225_POWER_CTRL1, ILI9225_POWER_CTRL1_SAP(8));
        ili9225_writereg(dev, ILI9225_POWER_CTRL2, ILI9225_POWER_CTRL2_VC(11) |
                                                   ILI9225_POWER_CTRL2_VC_EN  |
                                                   ILI9225_POWER_CTRL2_AON    |
                                                   ILI9225_POWER_CTRL2_APON
                                                   );
        ili9225_writereg(dev,  ILI9225_DRIVER_OUTPUT_CTRL,
                               ILI9225_DRIVER_OUTPUT_CTRL_NL(28) |
                               ILI9225_DRIVER_OUTPUT_CTRL_SS
                               );
        ili9225_writereg(dev, ILI9225_LCD_DRIVING_CTRL,
                              ILI9225_LCD_DRIVING_CTRL_INV0);
        ili9225_writereg(dev, ILI9225_ENTRY_MODE, ILI9225_ENTRY_MODE_AM |
                                                  ILI9225_ENTRY_MODE_ID(3) |
                                                  ILI9225_ENTRY_MODE_BGR
                                                  );
        ili9225_writereg(dev, ILI9225_DISP_CTRL2, ILI9225_DISP_CTRL2_BP(8) |
                                                  ILI9225_DISP_CTRL2_FP(8)
                                                  );
        ili9225_writereg(dev, ILI9225_FRAME_CYCLE_CTRL,
                              ILI9225_FRAME_CYCLE_CTRL_STD(1) |
                              ILI9225_FRAME_CYCLE_CTRL_NO(1)
                              );
        ili9225_writereg(dev, ILI9225_RGB_DISP_INT_CTRL1,
                              ILI9225_RGB_DISP_INT_CTRL1_RIM(1));
        ili9225_writereg(dev, ILI9225_OSC_CTRL, ILI9225_OSC_CTRL_EN |
                                                ILI9225_OSC_CTRL_FOSC(13)
                                                );
        ili9225_writereg(dev, ILI9225_VCI_REC, ILI9225_VCI_REC_VCIR(2));
  
        ili9225_writereg(dev, ILI9225_VER_SCROLL_CTRL1,
                              ILI9225_VER_SCROLL_CTRL1_SEA(219)
                              );
        ili9225_writereg(dev, ILI9225_PART_SCR_DRIV_POS1,
                              ILI9225_PART_SCR_DRIV_POS1_SE(219)
                              );
        ili9225_writereg(dev, ILI9225_HORIZONTAL_ADDR_END,
                              ILI9225_HORIZONTAL_ADDR_END_HEA(175)
                              );
        ili9225_writereg(dev, ILI9225_VERTICAL_ADDR_END,
                              ILI9225_VERTICAL_ADDR_END_VEA(219)
                              );
  
        ili9225_writereg(dev, ILI9225_GAMMA_CTRL2, ILI9225_GAMMA_CTRL2_KP2(8) |
                                                   ILI9225_GAMMA_CTRL2_KP3(8)
                                                   );
        ili9225_writereg(dev, ILI9225_GAMMA_CTRL3,
                              ILI9225_GAMMA_CTRL3_KP4(10) |
                              ILI9225_GAMMA_CTRL3_KP5(8)
                              );
        ili9225_writereg(dev, ILI9225_GAMMA_CTRL4,
                              ILI9225_GAMMA_CTRL4_RP0(10)
                              );
        ili9225_writereg(dev, ILI9225_GAMMA_CTRL5, ILI9225_GAMMA_CTRL5_KN0(8) |
                                                   ILI9225_GAMMA_CTRL5_KN1(10)
                                                   );
        ili9225_writereg(dev, ILI9225_GAMMA_CTRL6, ILI9225_GAMMA_CTRL6_KN2(8) |
                                                   ILI9225_GAMMA_CTRL6_KN3(8)
                                                   );
        ili9225_writereg(dev, ILI9225_GAMMA_CTRL8,
                              ILI9225_GAMMA_CTRL8_RN1(10)
                              );
        ili9225_writereg(dev, ILI9225_GAMMA_CTRL9,
                              ILI9225_GAMMA_CTRL9_VRP0(16) |
                              ILI9225_GAMMA_CTRL9_VRP1(7)
                              );
        ili9225_writereg(dev, ILI9225_GAMMA_CTRL10,
                              ILI9225_GAMMA_CTRL10_VRN0(10) |
                              ILI9225_GAMMA_CTRL10_VRN1(7)
                              );
        ili9225_writereg(dev, ILI9225_DISP_CTRL1, ILI9225_DISP_CTRL1_D(2) |
                                                  ILI9225_DISP_CTRL1_GON
                                                  );
  
        ili9225_writereg(dev, ILI9225_DISP_CTRL1, ILI9225_DISP_CTRL1_D(3) |
                                                  ILI9225_DISP_CTRL1_REV  |
                                                  ILI9225_DISP_CTRL1_GON  |
                                                  ILI9225_DISP_CTRL1_TEMON
                                                  );
      }
  }
  
  /****************************************************************************
   * Name: ili9225_setarea
   *
   * Description:
   *   Set the rectangular area for an upcoming read or write from RAM.
   *
   ****************************************************************************/
  
  static void ili9225_setarea(FAR struct ili9225_dev_s *dev,
                              uint16_t x0, uint16_t y0,
                              uint16_t x1, uint16_t y1)
  {
    /* Set row address */
  
    ili9225_writereg(dev, ILI9225_HORIZONTAL_ADDR_START,
                     ILI9225_HORIZONTAL_ADDR_START_HSA(x0));
    ili9225_writereg(dev, ILI9225_HORIZONTAL_ADDR_END,
                     ILI9225_HORIZONTAL_ADDR_END_HEA(x1));
  
    /* Set column address */
  
    ili9225_writereg(dev, ILI9225_VERTICAL_ADDR_START,
                     ILI9225_VERTICAL_ADDR_START_VSA(y0));
    ili9225_writereg(dev, ILI9225_VERTICAL_ADDR_END,
                     ILI9225_VERTICAL_ADDR_END_VEA(y1));
  }
  
  /****************************************************************************
   * Name: ili9225_bpp
   *
   * Description:
   *   Set the color depth of the device.
   *
   ****************************************************************************/
  
  static void ili9225_bpp(FAR struct ili9225_dev_s *dev, int bpp)
  {
    if (dev->bpp != bpp)
      {
        dev->bpp = bpp;
      }
  }
  
  /****************************************************************************
   * Name: ili9225_wrram
   *
   * Description:
   *   Write to the driver's RAM.
   *
   ****************************************************************************/
  
  static void ili9225_wrram(FAR struct ili9225_dev_s *dev,
                            FAR const uint16_t *buff, size_t size)
  {
    ili9225_sendcmd(dev, ILI9225_GRAM_DATA_REG);
  
    ili9225_select(dev->spi, ILI9225_BYTESPP * 8);
    SPI_SNDBLOCK(dev->spi, buff, size);
    ili9225_deselect(dev->spi);
  }
  
  /****************************************************************************
   * Name: ili9225_rdram
   *
   * Description:
   *   Read from the driver's RAM.
   *
   ****************************************************************************/
  
  #ifndef CONFIG_LCD_NOGETRUN
  static void ili9225_rdram(FAR struct ili9225_dev_s *dev,
                            FAR uint16_t *buff, size_t size)
  {
    ili9225_sendcmd(dev, ILI9225_GRAM_DATA_REG);
  
    ili9225_select(dev->spi, ILI9225_BYTESPP * 8);
    SPI_RECVBLOCK(dev->spi, buff, size);
    ili9225_deselect(dev->spi);
  }
  #endif
  
  /****************************************************************************
   * Name: ili9225_fill
   *
   * Description:
   *   Fill the display with the specified color.
   *
   ****************************************************************************/
  
  static void ili9225_fill(FAR struct ili9225_dev_s *dev, uint16_t color)
  {
    int i;
  
    ili9225_setarea(dev, 0, 0, ILI9225_XRES - 1, ILI9225_YRES - 1);
    ili9225_sendcmd(dev, ILI9225_GRAM_DATA_REG);
    ili9225_select(dev->spi, ILI9225_BYTESPP * 8);
    for (i = 0; i < ILI9225_XRES * ILI9225_YRES; i++)
      {
        SPI_SEND(dev->spi, color);
      }
  
    ili9225_deselect(dev->spi);
  }
  
  /****************************************************************************
   * Name:  ili9225_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 ili9225_putrun(fb_coord_t row, fb_coord_t col,
                            FAR const uint8_t *buffer, size_t npixels)
  {
    FAR struct ili9225_dev_s *priv = &g_lcddev;
    FAR const uint16_t *src = (FAR const uint16_t *)buffer;
  
    ginfo("row: %d col: %d npixels: %d\n", row, col, npixels);
    DEBUGASSERT(buffer && ((uintptr_t)buffer & 1) == 0);
  
    ili9225_setarea(priv, col, row, col + npixels - 1, row);
    ili9225_wrram(priv, src, npixels);
  
    return OK;
  }
  
  /****************************************************************************
   * Name:  ili9225_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)
   *
   ****************************************************************************/
  
  #ifndef CONFIG_LCD_NOGETRUN
  static int ili9225_getrun(fb_coord_t row, fb_coord_t col,
                            FAR uint8_t *buffer, size_t npixels)
  {
    FAR struct ili9225_dev_s *priv = &g_lcddev;
    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);
  
    ili9225_setarea(priv, col, row, col + npixels - 1, row);
    ili9225_rdram(priv, dest, npixels);
  
    return OK;
  }
  #endif
  
  /****************************************************************************
   * Name:  ili9225_getvideoinfo
   *
   * Description:
   *   Get information about the LCD video controller configuration.
   *
   ****************************************************************************/
  
  static int ili9225_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",
            ILI9225_COLORFMT, ILI9225_XRES, ILI9225_YRES);
  
    vinfo->fmt     = ILI9225_COLORFMT;    /* Color format: RGB16-565: RRRR RGGG GGGB BBBB */
    vinfo->xres    = ILI9225_XRES;        /* Horizontal resolution in pixel columns */
    vinfo->yres    = ILI9225_YRES;        /* Vertical resolution in pixel rows */
    vinfo->nplanes = 1;                   /* Number of color planes supported */
    return OK;
  }
  
  /****************************************************************************
   * Name:  ili9225_getplaneinfo
   *
   * Description:
   *   Get information about the configuration of each LCD color plane.
   *
   ****************************************************************************/
  
  static int ili9225_getplaneinfo(FAR struct lcd_dev_s *dev,
                                 unsigned int planeno,
                                 FAR struct lcd_planeinfo_s *pinfo)
  {
    FAR struct ili9225_dev_s *priv = (FAR struct ili9225_dev_s *)dev;
  
    DEBUGASSERT(dev && pinfo && planeno == 0);
    lcdinfo("planeno: %d bpp: %d\n", planeno, ILI9225_BPP);
  
    pinfo->putrun = ili9225_putrun;                  /* Put a run into LCD memory */
  #ifndef CONFIG_LCD_NOGETRUN
    pinfo->getrun = ili9225_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 */
    return OK;
  }
  
  /****************************************************************************
   * Name:  ili9225_getpower
   ****************************************************************************/
  
  static int ili9225_getpower(FAR struct lcd_dev_s *dev)
  {
    FAR struct ili9225_dev_s *priv = (FAR struct ili9225_dev_s *)dev;
  
    lcdinfo("power: %d\n", priv->power);
    return priv->power;
  }
  
  /****************************************************************************
   * Name:  ili9225_setpower
   ****************************************************************************/
  
  static int ili9225_setpower(FAR struct lcd_dev_s *dev, int power)
  {
    FAR struct ili9225_dev_s *priv = (FAR struct ili9225_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 */
  
        ili9225_display(priv, true);
  
        /* Save the power */
  
        priv->power = power;
      }
    else
      {
        /* Turn off the display */
  
        ili9225_display(priv, false);
  
        /* Save the power */
  
        priv->power = 0;
      }
  
    return OK;
  }
  
  /****************************************************************************
   * Public Functions
   ****************************************************************************/
  
  /****************************************************************************
   * Name:  ili9225_initialize
   *
   * Description:
   *   Initialize the ILI9225 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 *ili9225_lcdinitialize(FAR struct spi_dev_s *spi)
  {
    FAR struct ili9225_dev_s *priv = &g_lcddev;
  
    /* Initialize the driver data structure */
  
    priv->dev.getvideoinfo = ili9225_getvideoinfo;
    priv->dev.getplaneinfo = ili9225_getplaneinfo;
    priv->dev.getpower     = ili9225_getpower;
    priv->dev.setpower     = ili9225_setpower;
    priv->spi              = spi;
  
    /* Init the hardware and clear the display */
  
    ili9225_display(priv, true);
  
    ili9225_bpp(priv, ILI9225_BPP);
  
    /* Set background color */
  
    ili9225_fill(priv, 0x07ff);
  
    return &priv->dev;
  }
  
  #endif /* CONFIG_LCD_ILI9225 */
  