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nuttx/drivers/lcd/mio283qt2.c
Gregory Nutt 3a1324741a More trailing whilespace removal
2014-04-13 14:32:20 -06:00

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/**************************************************************************************
* drivers/lcd/mio283qt2.c
*
* This is a driver for the MI0283QT-2 LCD from Multi-Inno Technology Co., Ltd. This
* LCD is based on the Himax HX8347-D LCD controller.
*
* Copyright (C) 2012 Gregory Nutt. All rights reserved.
* Authors: Gregory Nutt <gnutt@nuttx.org>
*
* References:
* 1) LCD Module Specification, Model : MI0283QT-2, Multi-Inno Technology Co.,
* Ltd., Revision 1.0
* 2) Data Sheet: HX8347-D(T), 240RGB x 320 dot, 262K color, with internal GRAM, TFT
* Mobile Single Chip Driver Version 02 March, Doc No. HX8347-D(T)-DS, Himax
* Technologies, Inc., 2009,
*
* 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 <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/mio283qt2.h>
#ifdef CONFIG_LCD_MIO283QT2
/**************************************************************************************
* Pre-processor Definitions
**************************************************************************************/
/* Configuration **********************************************************************/
/* 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
/* Define CONFIG_DEBUG_LCD to enable detailed LCD debug output. Verbose debug must
* also be enabled.
*/
#ifndef CONFIG_DEBUG
# undef CONFIG_DEBUG_VERBOSE
# undef CONFIG_DEBUG_GRAPHICS
# undef CONFIG_DEBUG_LCD
#endif
#ifndef CONFIG_DEBUG_VERBOSE
# undef CONFIG_DEBUG_LCD
#endif
/* Display/Color Properties ***********************************************************/
/* Display Resolution */
#if defined(CONFIG_LCD_LANDSCAPE) || defined(CONFIG_LCD_RLANDSCAPE)
# define MIO283QT2_XRES 320
# define MIO283QT2_YRES 240
#else
# define MIO283QT2_XRES 240
# define MIO283QT2_YRES 320
#endif
/* Color depth and format */
#define MIO283QT2_BPP 16
#define MIO283QT2_COLORFMT FB_FMT_RGB16_565
/* Hardware LCD/LCD controller definitions ********************************************/
/* In this driver, I chose to use all literal constants for register address and
* values. Some recent experiences have shown me that during LCD bringup, it is more
* important to know the binary values rather than nice, people friendly names. Sad,
* but true.
*/
#define HIMAX_ID 0x0047
/* LCD Profiles ***********************************************************************/
/* Many details of the controller initialization must, unfortunately, vary from LCD to
* LCD. I have looked at the spec and at three different drivers for LCDs that have
* MIO283QT2 controllers. I have tried to summarize these differences as "LCD profiles"
*
* Most of the differences between LCDs are nothing more than a few minor bit
* settings. The most significant difference betwen LCD drivers in is the
* manner in which the LCD is powered up and in how the power controls are set.
* My suggestion is that if you have working LCD initialization code, you should
* simply replace the code in mio283qt2_hwinitialize with your working code.
*/
#if defined (CONFIG_MIO283QT2_PROFILE2)
# undef MIO283QT2_USE_SIMPLE_INIT
/* PWRCTRL1: AP=smalll-to-medium, DC=Flinex24, BT=+5/-4, DCT=Flinex24 */
# define PWRCTRL1_SETTING \
(MIO283QT2_PWRCTRL1_AP_SMMED | MIO283QT2_PWRCTRL1_DC_FLINEx24 | \
MIO283QT2_PWRCTRL1_BT_p5m4 | MIO283QT2_PWRCTRL1_DCT_FLINEx24)
/* PWRCTRL2: 5.1v */
# define PWRCTRL2_SETTING MIO283QT2_PWRCTRL2_VRC_5p1V
/* PWRCTRL3: x 2.165
* NOTE: Many drivers have bit 8 set which is not defined in the MIO283QT2 spec.
*/
# define PWRCTRL3_SETTING MIO283QT2_PWRCTRL3_VRH_x2p165
/* PWRCTRL4: VDV=9 + VCOMG */
# define PWRCTRL4_SETTING (MIO283QT2_PWRCTRL4_VDV(9) | MIO283QT2_PWRCTRL4_VCOMG)
/* PWRCTRL5: VCM=56 + NOTP */
# define PWRCTRL5_SETTING (MIO283QT2_PWRCTRL5_VCM(56) | MIO283QT2_PWRCTRL5_NOTP)
#elif defined (CONFIG_MIO283QT2_PROFILE3)
# undef MIO283QT2_USE_SIMPLE_INIT
/* PWRCTRL1: AP=smalll-to-medium, DC=Flinex24, BT=+5/-4, DCT=Flinex24 */
# define PWRCTRL1_SETTING \
(MIO283QT2_PWRCTRL1_AP_SMMED | MIO283QT2_PWRCTRL1_DC_FLINEx24 | \
MIO283QT2_PWRCTRL1_BT_p5m4 | MIO283QT2_PWRCTRL1_DCT_FLINEx24)
/* PWRCTRL2: 5.1v */
# define PWRCTRL2_SETTING MIO283QT2_PWRCTRL2_VRC_5p1V
/* PWRCTRL3: x 2.165
* NOTE: Many drivers have bit 8 set which is not defined in the MIO283QT2 spec.
*/
# define PWRCTRL3_SETTING MIO283QT2_PWRCTRL3_VRH_x2p165
/* PWRCTRL4: VDV=9 + VCOMG */
# define PWRCTRL4_SETTING (MIO283QT2_PWRCTRL4_VDV(9) | MIO283QT2_PWRCTRL4_VCOMG)
/* PWRCTRL5: VCM=56 + NOTP */
# define PWRCTRL5_SETTING (MIO283QT2_PWRCTRL5_VCM(56) | MIO283QT2_PWRCTRL5_NOTP)
#else /* if defined (CONFIG_MIO283QT2_PROFILE1) */
# undef MIO283QT2_USE_SIMPLE_INIT
# define MIO283QT2_USE_SIMPLE_INIT 1
/* PWRCTRL1: AP=medium-to-large, DC=Fosc/4, BT=+5/-4, DCT=Fosc/4 */
# define PWRCTRL1_SETTING \
(MIO283QT2_PWRCTRL1_AP_MEDLG | MIO283QT2_PWRCTRL1_DC_FOSd4 | \
MIO283QT2_PWRCTRL1_BT_p5m4 | MIO283QT2_PWRCTRL1_DCT_FOSd4)
/* PWRCTRL2: 5.3v */
# define PWRCTRL2_SETTING MIO283QT2_PWRCTRL2_VRC_5p3V
/* PWRCTRL3: x 2.570
* NOTE: Many drivers have bit 8 set which is not defined in the MIO283QT2 spec.
*/
# define PWRCTRL3_SETTING MIO283QT2_PWRCTRL3_VRH_x2p570
/* PWRCTRL4: VDV=12 + VCOMG */
# define PWRCTRL4_SETTING (MIO283QT2_PWRCTRL4_VDV(12) | MIO283QT2_PWRCTRL4_VCOMG)
/* PWRCTRL5: VCM=60 + NOTP */
# define PWRCTRL5_SETTING (MIO283QT2_PWRCTRL5_VCM(60) | MIO283QT2_PWRCTRL5_NOTP)
#endif
/* Debug ******************************************************************************/
#ifdef CONFIG_DEBUG_LCD
# define lcddbg dbg
# define lcdvdbg vdbg
#else
# define lcddbg(x...)
# define lcdvdbg(x...)
#endif
/**************************************************************************************
* Private Type Definition
**************************************************************************************/
/* This structure describes the state of this driver */
struct mio283qt2_dev_s
{
/* Publically visible device structure */
struct lcd_dev_s dev;
/* Private LCD-specific information follows */
FAR struct mio283qt2_lcd_s *lcd; /* The contained platform-specific, LCD interface */
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[MIO283QT2_XRES];
};
/**************************************************************************************
* Private Function Protototypes
**************************************************************************************/
/* Low Level LCD access */
static void mio283qt2_putreg(FAR struct mio283qt2_lcd_s *lcd, uint8_t regaddr,
uint16_t regval);
#ifndef CONFIG_LCD_NOGETRUN
static uint16_t mio283qt2_readreg(FAR struct mio283qt2_lcd_s *lcd, uint8_t regaddr);
#endif
static inline void mio283qt2_gramwrite(FAR struct mio283qt2_lcd_s *lcd,
uint16_t rgbcolor);
#ifndef CONFIG_LCD_NOGETRUN
static inline void mio283qt2_readsetup(FAR struct mio283qt2_lcd_s *lcd,
FAR uint16_t *accum);
static inline uint16_t mio283qt2_gramread(FAR struct mio283qt2_lcd_s *lcd,
FAR uint16_t *accum);
#endif
static void mio283qt2_setarea(FAR struct mio283qt2_lcd_s *lcd,
uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1);
/* LCD Data Transfer Methods */
static int mio283qt2_putrun(fb_coord_t row, fb_coord_t col, FAR const uint8_t *buffer,
size_t npixels);
static int mio283qt2_getrun(fb_coord_t row, fb_coord_t col, FAR uint8_t *buffer,
size_t npixels);
/* LCD Configuration */
static int mio283qt2_getvideoinfo(FAR struct lcd_dev_s *dev,
FAR struct fb_videoinfo_s *vinfo);
static int mio283qt2_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 mio283qt2_getpower(FAR struct lcd_dev_s *dev);
static int mio283qt2_setpower(FAR struct lcd_dev_s *dev, int power);
static int mio283qt2_getcontrast(FAR struct lcd_dev_s *dev);
static int mio283qt2_setcontrast(FAR struct lcd_dev_s *dev, unsigned int contrast);
/* Initialization */
static inline int mio283qt2_hwinitialize(FAR struct mio283qt2_dev_s *priv);
/**************************************************************************************
* Private Data
**************************************************************************************/
/* This driver can support only a signal MIO283QT2 device. This is due to an
* unfortunate decision made whent he getrun and putrun methods were designed. The
* following is the single MIO283QT2 driver state instance:
*/
static struct mio283qt2_dev_s g_lcddev;
/**************************************************************************************
* Private Functions
**************************************************************************************/
/**************************************************************************************
* Name: mio283qt2_putreg(lcd,
*
* Description:
* Write to an LCD register
*
**************************************************************************************/
static void mio283qt2_putreg(FAR struct mio283qt2_lcd_s *lcd,
uint8_t regaddr, uint16_t regval)
{
/* Set the index register to the register address and write the register contents */
lcd->index(lcd, regaddr);
lcd->write(lcd, regval);
}
/**************************************************************************************
* Name: mio283qt2_readreg
*
* Description:
* Read from an LCD register
*
**************************************************************************************/
#ifndef CONFIG_LCD_NOGETRUN
static uint16_t mio283qt2_readreg(FAR struct mio283qt2_lcd_s *lcd, uint8_t regaddr)
{
/* Set the index register to the register address and read the register contents. */
lcd->index(lcd, regaddr);
return lcd->read(lcd);
}
#endif
/**************************************************************************************
* Name: mio283qt2_gramselect
*
* Description:
* Setup to read or write multiple pixels to the GRAM memory
*
**************************************************************************************/
static inline void mio283qt2_gramselect(FAR struct mio283qt2_lcd_s *lcd)
{
lcd->index(lcd, 0x22);
}
/**************************************************************************************
* Name: mio283qt2_gramwrite
*
* Description:
* Setup to read or write multiple pixels to the GRAM memory
*
**************************************************************************************/
static inline void mio283qt2_gramwrite(FAR struct mio283qt2_lcd_s *lcd, uint16_t data)
{
lcd->write(lcd, data);
}
/**************************************************************************************
* Name: mio283qt2_readsetup
*
* Description:
* Prime the operation by reading one pixel from the GRAM memory if necessary for
* this LCD type. When reading 16-bit gram data, there may be some shifts in the
* returned data:
*
* - ILI932x: Discard first dummy read; no shift in the return data
*
**************************************************************************************/
#ifndef CONFIG_LCD_NOGETRUN
static inline void mio283qt2_readsetup(FAR struct mio283qt2_lcd_s *lcd,
FAR uint16_t *accum)
{
#if 0 /* Probably not necessary... untested */
/* Read-ahead one pixel */
*accum = lcd->read(lcd);
#endif
}
#endif
/**************************************************************************************
* Name: mio283qt2_gramread
*
* Description:
* Read one correctly aligned pixel from the GRAM memory. Possibly shifting the
* data and possibly swapping red and green components.
*
* - ILI932x: Unknown -- assuming colors are in the color order
*
**************************************************************************************/
#ifndef CONFIG_LCD_NOGETRUN
static inline uint16_t mio283qt2_gramread(FAR struct mio283qt2_lcd_s *lcd,
FAR uint16_t *accum)
{
/* Read the value (GRAM register already selected) */
return lcd->read(lcd);
}
#endif
/**************************************************************************************
* Name: mio283qt2_setarea
*
* Description:
* Set the cursor position. In landscape mode, the "column" is actually the physical
* Y position and the "row" is the physical X position.
*
**************************************************************************************/
static void mio283qt2_setarea(FAR struct mio283qt2_lcd_s *lcd,
uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1)
{
mio283qt2_putreg(lcd, 0x03, (x0 & 0x00ff)); /* set x0 */
mio283qt2_putreg(lcd, 0x02, (x0 >> 8)); /* set x0 */
mio283qt2_putreg(lcd, 0x05, (x1 & 0x00ff)); /* set x1 */
mio283qt2_putreg(lcd, 0x04, (x1 >> 8)); /* set x1 */
mio283qt2_putreg(lcd, 0x07, (y0 & 0x00ff)); /* set y0 */
mio283qt2_putreg(lcd, 0x06, (y0 >> 8)); /* set y0 */
mio283qt2_putreg(lcd, 0x09, (y1 & 0x00ff)); /* set y1 */
mio283qt2_putreg(lcd, 0x08, (y1 >> 8)); /* set y1 */
}
/**************************************************************************************
* Name: mio283qt2_dumprun
*
* Description:
* Dump the contexts of the run buffer:
*
* run - The buffer in containing the run read to be dumped
* npixels - The number of pixels to dump
*
**************************************************************************************/
#if 0 /* Sometimes useful */
static void mio283qt2_dumprun(FAR const char *msg, FAR uint16_t *run, size_t npixels)
{
int i, j;
syslog("\n%s:\n", msg);
for (i = 0; i < npixels; i += 16)
{
up_putc(' ');
syslog(" ");
for (j = 0; j < 16; j++)
{
syslog(" %04x", *run++);
}
up_putc('\n');
}
}
#endif
/**************************************************************************************
* Name: mio283qt2_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 mio283qt2_putrun(fb_coord_t row, fb_coord_t col, FAR const uint8_t *buffer,
size_t npixels)
{
FAR struct mio283qt2_dev_s *priv = &g_lcddev;
FAR struct mio283qt2_lcd_s *lcd = priv->lcd;
FAR const uint16_t *src = (FAR const uint16_t*)buffer;
int i;
/* Buffer must be provided and aligned to a 16-bit address boundary */
lcdvdbg("row: %d col: %d npixels: %d\n", row, col, npixels);
DEBUGASSERT(buffer && ((uintptr_t)buffer & 1) == 0);
/* Select the LCD */
lcd->select(lcd);
/* Write the run to GRAM. */
mio283qt2_setarea(lcd, col, row, col + npixels - 1, row);
mio283qt2_gramselect(lcd);
for (i = 0; i < npixels; i++)
{
mio283qt2_gramwrite(lcd, *src);
src++;
}
/* De-select the LCD */
lcd->deselect(lcd);
return OK;
}
/**************************************************************************************
* Name: mio283qt2_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 mio283qt2_getrun(fb_coord_t row, fb_coord_t col, FAR uint8_t *buffer,
size_t npixels)
{
#ifndef CONFIG_LCD_NOGETRUN
FAR struct mio283qt2_dev_s *priv = &g_lcddev;
FAR struct mio283qt2_lcd_s *lcd = priv->lcd;
FAR uint16_t *dest = (FAR uint16_t*)buffer;
uint16_t accum;
int i;
/* Buffer must be provided and aligned to a 16-bit address boundary */
lcdvdbg("row: %d col: %d npixels: %d\n", row, col, npixels);
DEBUGASSERT(buffer && ((uintptr_t)buffer & 1) == 0);
/* Select the LCD */
lcd->select(lcd);
/* Read the run from GRAM. */
/* Select the LCD */
lcd->select(lcd);
/* Red the run fram GRAM. */
mio283qt2_setarea(lcd, col, row, col + npixels - 1, row);
mio283qt2_gramselect(lcd);
/* Prime the pump for unaligned read data */
mio283qt2_readsetup(lcd, &accum);
for (i = 0; i < npixels; i++)
{
*dest++ = mio283qt2_gramread(lcd, &accum);
}
/* De-select the LCD */
lcd->deselect(lcd);
return OK;
#else
return -ENOSYS;
#endif
}
/**************************************************************************************
* Name: mio283qt2_getvideoinfo
*
* Description:
* Get information about the LCD video controller configuration.
*
**************************************************************************************/
static int mio283qt2_getvideoinfo(FAR struct lcd_dev_s *dev,
FAR struct fb_videoinfo_s *vinfo)
{
DEBUGASSERT(dev && vinfo);
lcdvdbg("fmt: %d xres: %d yres: %d nplanes: 1\n",
MIO283QT2_COLORFMT, MIO283QT2_XRES, MIO283QT2_XRES);
vinfo->fmt = MIO283QT2_COLORFMT; /* Color format: RGB16-565: RRRR RGGG GGGB BBBB */
vinfo->xres = MIO283QT2_XRES; /* Horizontal resolution in pixel columns */
vinfo->yres = MIO283QT2_YRES; /* Vertical resolution in pixel rows */
vinfo->nplanes = 1; /* Number of color planes supported */
return OK;
}
/**************************************************************************************
* Name: mio283qt2_getplaneinfo
*
* Description:
* Get information about the configuration of each LCD color plane.
*
**************************************************************************************/
static int mio283qt2_getplaneinfo(FAR struct lcd_dev_s *dev, unsigned int planeno,
FAR struct lcd_planeinfo_s *pinfo)
{
FAR struct mio283qt2_dev_s *priv = (FAR struct mio283qt2_dev_s *)dev;
DEBUGASSERT(dev && pinfo && planeno == 0);
lcdvdbg("planeno: %d bpp: %d\n", planeno, MIO283QT2_BPP);
pinfo->putrun = mio283qt2_putrun; /* Put a run into LCD memory */
pinfo->getrun = mio283qt2_getrun; /* Get a run from LCD memory */
pinfo->buffer = (uint8_t*)priv->runbuffer; /* Run scratch buffer */
pinfo->bpp = MIO283QT2_BPP; /* Bits-per-pixel */
return OK;
}
/**************************************************************************************
* Name: mio283qt2_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 mio283qt2_getpower(FAR struct lcd_dev_s *dev)
{
lcdvdbg("power: %d\n", 0);
return g_lcddev.power;
}
/**************************************************************************************
* Name: mio283qt2_poweroff
*
* 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 mio283qt2_poweroff(FAR struct mio283qt2_lcd_s *lcd)
{
/* Select the LCD */
lcd->select(lcd);
/* Set the backlight off */
lcd->backlight(lcd, 0);
/* Turn the display off */
mio283qt2_putreg(lcd, 0x28, 0x0000); /* GON=0, DTE=0, D=0 */
/* Deselect the LCD */
lcd->deselect(lcd);
/* Remember the power off state */
g_lcddev.power = 0;
return OK;
}
/**************************************************************************************
* Name: mio283qt2_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 mio283qt2_setpower(FAR struct lcd_dev_s *dev, int power)
{
FAR struct mio283qt2_dev_s *priv = (FAR struct mio283qt2_dev_s *)dev;
FAR struct mio283qt2_lcd_s *lcd = priv->lcd;
lcdvdbg("power: %d\n", power);
DEBUGASSERT((unsigned)power <= CONFIG_LCD_MAXPOWER);
/* Set new power level */
if (power > 0)
{
/* Select the LCD */
lcd->select(lcd);
/* Set the backlight level */
lcd->backlight(lcd, power);
/* Then turn the display on:
* D=ON(3) CM=0 DTE=1 GON=1 SPT=0 VLE=0 PT=0
*/
mio283qt2_putreg(lcd, 0x28, 0x0038); /* GON=1, DTE=1, D=2 */
up_mdelay(40);
mio283qt2_putreg(lcd, 0x28, 0x003c); /* GON=1, DTE=1, D=3 */
/* Deselect the LCD */
lcd->deselect(lcd);
/* Remember the power on state */
g_lcddev.power = power;
}
else
{
/* Turn the display off */
mio283qt2_poweroff(lcd);
}
return OK;
}
/**************************************************************************************
* Name: mio283qt2_getcontrast
*
* Description:
* Get the current contrast setting (0-CONFIG_LCD_MAXCONTRAST).
*
**************************************************************************************/
static int mio283qt2_getcontrast(FAR struct lcd_dev_s *dev)
{
lcdvdbg("Not implemented\n");
return -ENOSYS;
}
/**************************************************************************************
* Name: mio283qt2_setcontrast
*
* Description:
* Set LCD panel contrast (0-CONFIG_LCD_MAXCONTRAST).
*
**************************************************************************************/
static int mio283qt2_setcontrast(FAR struct lcd_dev_s *dev, unsigned int contrast)
{
lcdvdbg("contrast: %d\n", contrast);
return -ENOSYS;
}
/**************************************************************************************
* Name: mio283qt2_hwinitialize
*
* Description:
* Initialize the LCD hardware.
*
**************************************************************************************/
static inline int mio283qt2_hwinitialize(FAR struct mio283qt2_dev_s *priv)
{
FAR struct mio283qt2_lcd_s *lcd = priv->lcd;
#ifndef CONFIG_LCD_NOGETRUN
uint16_t id;
#endif
int ret;
/* Select the LCD */
lcd->select(lcd);
/* Read the HIMAX ID registger (0x00) */
#ifndef CONFIG_LCD_NOGETRUN
id = mio283qt2_readreg(lcd, 0x00);
lcddbg("LCD ID: %04x\n", id);
/* Check if the ID is for the MIO283QT2 */
if (id == HIMAX_ID)
#endif
{
/* Driving ability */
mio283qt2_putreg(lcd, 0xea, 0x0000); /* PTBA[15:8] */
mio283qt2_putreg(lcd, 0xeb, 0x0020); /* PTBA[7:0] */
mio283qt2_putreg(lcd, 0xec, 0x000c); /* STBA[15:8] */
mio283qt2_putreg(lcd, 0xed, 0x00c4); /* STBA[7:0] */
mio283qt2_putreg(lcd, 0xe8, 0x0040); /* OPON[7:0] */
mio283qt2_putreg(lcd, 0xe9, 0x0038); /* OPON1[7:0] */
mio283qt2_putreg(lcd, 0xf1, 0x0001); /* OTPS1B */
mio283qt2_putreg(lcd, 0xf2, 0x0010); /* GEN */
mio283qt2_putreg(lcd, 0x27, 0x00a3);
/* Power voltage */
mio283qt2_putreg(lcd, 0x1b, 0x001b); /* VRH = 4.65 */
mio283qt2_putreg(lcd, 0x1a, 0x0001); /* BT */
mio283qt2_putreg(lcd, 0x24, 0x002f); /* VMH */
mio283qt2_putreg(lcd, 0x25, 0x0057); /* VML */
/* Vcom offset */
mio283qt2_putreg(lcd, 0x23, 0x008d); /* For flicker adjust */
/* Power on */
mio283qt2_putreg(lcd, 0x18, 0x0036);
mio283qt2_putreg(lcd, 0x19, 0x0001); /* Start oscillator */
mio283qt2_putreg(lcd, 0x01, 0x0000); /* Wakeup */
mio283qt2_putreg(lcd, 0x1f, 0x0088);
up_mdelay(5);
mio283qt2_putreg(lcd, 0x1f, 0x0080);
up_mdelay(5);
mio283qt2_putreg(lcd, 0x1f, 0x0090);
up_mdelay(5);
mio283qt2_putreg(lcd, 0x1f, 0x00d0);
up_mdelay(5);
/* Gamma 2.8 setting */
mio283qt2_putreg(lcd, 0x40, 0x0000);
mio283qt2_putreg(lcd, 0x41, 0x0000);
mio283qt2_putreg(lcd, 0x42, 0x0001);
mio283qt2_putreg(lcd, 0x43, 0x0013);
mio283qt2_putreg(lcd, 0x44, 0x0010);
mio283qt2_putreg(lcd, 0x45, 0x0026);
mio283qt2_putreg(lcd, 0x46, 0x0008);
mio283qt2_putreg(lcd, 0x47, 0x0051);
mio283qt2_putreg(lcd, 0x48, 0x0002);
mio283qt2_putreg(lcd, 0x49, 0x0012);
mio283qt2_putreg(lcd, 0x4a, 0x0018);
mio283qt2_putreg(lcd, 0x4b, 0x0019);
mio283qt2_putreg(lcd, 0x4c, 0x0014);
mio283qt2_putreg(lcd, 0x50, 0x0019);
mio283qt2_putreg(lcd, 0x51, 0x002f);
mio283qt2_putreg(lcd, 0x52, 0x002c);
mio283qt2_putreg(lcd, 0x53, 0x003e);
mio283qt2_putreg(lcd, 0x54, 0x003f);
mio283qt2_putreg(lcd, 0x55, 0x003f);
mio283qt2_putreg(lcd, 0x56, 0x002e);
mio283qt2_putreg(lcd, 0x57, 0x0077);
mio283qt2_putreg(lcd, 0x58, 0x000b);
mio283qt2_putreg(lcd, 0x59, 0x0006);
mio283qt2_putreg(lcd, 0x5a, 0x0007);
mio283qt2_putreg(lcd, 0x5b, 0x000d);
mio283qt2_putreg(lcd, 0x5c, 0x001d);
mio283qt2_putreg(lcd, 0x5d, 0x00cc);
/* 4K Color Selection */
mio283qt2_putreg(lcd, 0x17, 0x0003);
mio283qt2_putreg(lcd, 0x17, 0x0005); /* 0x0005=65k, 0x0006=262k */
/* Panel characteristics */
mio283qt2_putreg(lcd, 0x36, 0x0000);
/* Display Setting */
mio283qt2_putreg(lcd, 0x01, 0x0000); /* IDMON=0, INVON=0, NORON=0, PTLON=0 */
#if defined(CONFIG_LCD_LANDSCAPE)
mio283qt2_putreg(lcd, 0x16, 0x00a8); /* MY=1, MX=0, MV=1, ML=0, BGR=1 */
#elif defined(CONFIG_LCD_PORTRAIT)
mio283qt2_putreg(lcd, 0x16, 0x0008); /* MY=0, MX=0, MV=0, ML=0, BGR=1 */
#elif defined(CONFIG_LCD_RLANDSCAPE)
mio283qt2_putreg(lcd, 0x16, 0x0068); /* MY=0, MX=1, MV=1, ML=0, BGR=1 */
#elif defined(CONFIG_LCD_RPORTRAIT)
mio283qt2_putreg(lcd, 0x16, 0x00c8); /* MY=1, MX=0, MV=1, ML=0, BGR=1 */
#endif
/* Window setting */
mio283qt2_setarea(lcd, 0, 0, (MIO283QT2_XRES-1), (MIO283QT2_YRES-1));
ret = OK;
}
#ifndef CONFIG_LCD_NOGETRUN
else
{
lcddbg("Unsupported LCD type\n");
ret = -ENODEV;
}
#endif
/* De-select the LCD */
lcd->deselect(lcd);
return ret;
}
/*************************************************************************************
* Public Functions
**************************************************************************************/
/**************************************************************************************
* Name: mio283qt2_lcdinitialize
*
* 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 *mio283qt2_lcdinitialize(FAR struct mio283qt2_lcd_s *lcd)
{
int ret;
lcdvdbg("Initializing\n");
/* If we ccould support multiple MIO283QT2 devices, this is where we would allocate
* a new driver data structure... but we can't. Why not? Because of a bad should
* the form of the getrun() and putrun methods.
*/
FAR struct mio283qt2_dev_s *priv = &g_lcddev;
/* Initialize the driver data structure */
priv->dev.getvideoinfo = mio283qt2_getvideoinfo;
priv->dev.getplaneinfo = mio283qt2_getplaneinfo;
priv->dev.getpower = mio283qt2_getpower;
priv->dev.setpower = mio283qt2_setpower;
priv->dev.getcontrast = mio283qt2_getcontrast;
priv->dev.setcontrast = mio283qt2_setcontrast;
priv->lcd = lcd;
/* Configure and enable LCD */
ret = mio283qt2_hwinitialize(priv);
if (ret == OK)
{
/* Clear the display (setting it to the color 0=black) */
mio283qt2_clear(&priv->dev, 0);
/* Turn the display off */
mio283qt2_poweroff(lcd);
return &g_lcddev.dev;
}
return NULL;
}
/**************************************************************************************
* Name: mio283qt2_clear
*
* Description:
* This is a non-standard LCD interface just for the stm3240g-EVAL board. Because
* of the various rotations, clearing the display in the normal way by writing a
* sequences of runs that covers the entire display can be very slow. Here the
* display is cleared by simply setting all GRAM memory to the specified color.
*
**************************************************************************************/
void mio283qt2_clear(FAR struct lcd_dev_s *dev, uint16_t color)
{
FAR struct mio283qt2_dev_s *priv = (FAR struct mio283qt2_dev_s *)dev;
FAR struct mio283qt2_lcd_s *lcd = priv->lcd;
uint32_t i;
/* Select the LCD and set the drawring area */
lcd->select(lcd);
mio283qt2_setarea(lcd, 0, 0, (MIO283QT2_XRES-1), (MIO283QT2_YRES-1));
/* Prepare to write GRAM data */
mio283qt2_gramselect(lcd);
/* Copy color into all of GRAM. Orientation does not matter in this case. */
for (i = 0; i < MIO283QT2_XRES * MIO283QT2_YRES; i++)
{
mio283qt2_gramwrite(lcd, color);
}
/* De-select the LCD */
lcd->deselect(lcd);
}
#endif /* CONFIG_LCD_MIO283QT2 */
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