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incubator-nuttx/drivers/lcd/ili9225.c

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/****************************************************************************
* 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 <assert.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(FAR struct lcd_dev_s *dev,
fb_coord_t row, fb_coord_t col,
FAR const uint8_t *buffer, size_t npixels);
#ifndef CONFIG_LCD_NOGETRUN
static int ili9225_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 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:
*
* 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 ili9225_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 ili9225_dev_s *priv = (FAR struct ili9225_dev_s *)dev;
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:
*
* 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 ili9225_getrun(FAR struct lcd_dev_s *dev,
fb_coord_t row, fb_coord_t col,
FAR uint8_t *buffer, size_t npixels)
{
FAR struct ili9225_dev_s *priv = (FAR struct ili9225_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);
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 */
pinfo->dev = dev; /* The lcd device */
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 */
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