/************************************************************************************** * 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 * * 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 #include #include #include #include #include #include #include #include #include #include #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(LOG_INFO, "\n%s:\n", msg); for (i = 0; i < npixels; i += 16) { up_putc(' '); syslog(LOG_INFO, " "); for (j = 0; j < 16; j++) { syslog(LOG_INFO, " %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 */