/************************************************************************************** * drivers/lcd/nokia6100.c * Nokia 6100 LCD Display Driver * * Copyright (C) 2010-2011 Gregory Nutt. All rights reserved. * Author: Gregory Nutt * * References: * "Nokia 6100 LCD Display Driver," Revision 1, James P. Lynch ("Nokia 6100 LCD * Display Driver.pdf") * "S1D15G0D08B000," Seiko Epson Corportation, 2002. * "Data Sheet, PCF8833 STN RGB 132x132x3 driver," Phillips, 2003 Feb 14. * * 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_NOKIA6100_PCF8833 # include "pcf8833.h" #endif #ifdef CONFIG_NOKIA6100_S1D15G10 # include "s1d15g10.h" #endif /************************************************************************************** * Pre-processor Definitions **************************************************************************************/ /* Configuration **********************************************************************/ /* Verify that all configuration requirements have been met */ /* Nokia 6100 Configuration Settings: * * CONFIG_NOKIA6100_SPIMODE - Controls the SPI mode * CONFIG_NOKIA6100_FREQUENCY - Define to use a different bus frequency * CONFIG_NOKIA6100_NINTERFACES - Specifies the number of physical Nokia 6100 devices that * will be supported. * CONFIG_NOKIA6100_BPP - Device supports 8, 12, and 16 bits per pixel. * CONFIG_NOKIA6100_S1D15G10 - Selects the Epson S1D15G10 display controller * CONFIG_NOKIA6100_PCF8833 - Selects the Phillips PCF8833 display controller * CONFIG_NOKIA6100_BLINIT - Initial backlight setting * * The following may need to be tuned for your hardware: * CONFIG_NOKIA6100_INVERT - Display inversion, 0 or 1, Default: 1 * CONFIG_NOKIA6100_MY - Display row direction, 0 or 1, Default: 0 * CONFIG_NOKIA6100_MX - Display column direction, 0 or 1, Default: 1 * CONFIG_NOKIA6100_V - Display address direction, 0 or 1, Default: 0 * CONFIG_NOKIA6100_ML - Display scan direction, 0 or 1, Default: 0 * CONFIG_NOKIA6100_RGBORD - Display RGB order, 0 or 1, Default: 0 * * Required LCD driver settings: * CONFIG_LCD_NOKIA6100 - Enable Nokia 6100 support * CONFIG_LCD_MAXCONTRAST - must be 63 with the Epson controller and 127 with * the Phillips controller. * CONFIG_LCD_MAXPOWER - Maximum value of backlight setting. The backlight control is * managed outside of the 6100 driver so this value has no meaning to the driver. */ /* Mode 0,0 should be use. However, somtimes you need to tinker with these things. */ #ifndef CONFIG_NOKIA6100_SPIMODE # define CONFIG_NOKIA6100_SPIMODE SPIDEV_MODE0 #endif /* Default frequency: 1Mhz */ #ifndef CONFIG_NOKIA6100_FREQUENCY # define CONFIG_NOKIA6100_FREQUENCY 1000000 #endif /* CONFIG_NOKIA6100_NINTERFACES determines the number of physical interfaces * that will be supported. */ #ifndef CONFIG_NOKIA6100_NINTERFACES # define CONFIG_NOKIA6100_NINTERFACES 1 #endif #if CONFIG_NOKIA6100_NINTERFACES != 1 # error "This implementation supports only a single LCD device" #endif /* Only support for 8 and 12 BPP currently implemented */ #if !defined(CONFIG_NOKIA6100_BPP) # warning "Assuming 8BPP" # define CONFIG_NOKIA6100_BPP 8 #endif #if CONFIG_NOKIA6100_BPP != 8 && CONFIG_NOKIA6100_BPP != 12 # if CONFIG_NOKIA6100_BPP == 16 # error "Support for 16BPP no yet implemented" # else # error "LCD supports only 8, 12, and 16BPP" # endif #endif #if CONFIG_NOKIA6100_BPP == 8 # ifdef CONFIG_NX_DISABLE_8BPP # warning "8-bit pixel support needed" # endif #elif CONFIG_NOKIA6100_BPP == 12 # if defined(CONFIG_NX_DISABLE_12BPP) || !defined(CONFIG_NX_PACKEDMSFIRST) # warning "12-bit, big-endian pixel support needed" # endif #elif CONFIG_NOKIA6100_BPP == 16 # ifdef CONFIG_NX_DISABLE_16BPP # warning "16-bit pixel support needed" # endif #endif /* Exactly one LCD controller must be selected. "The Olimex boards have both display * controllers possible; if the LCD has a GE-12 sticker on it, it’s a Philips PCF8833. * If it has a GE-8 sticker, it’s an Epson controller." */ #if defined(CONFIG_NOKIA6100_S1D15G10) && defined(CONFIG_NOKIA6100_PCF8833) # error "Both CONFIG_NOKIA6100_S1D15G10 and CONFIG_NOKIA6100_PCF8833 are defined" #endif #if !defined(CONFIG_NOKIA6100_S1D15G10) && !defined(CONFIG_NOKIA6100_PCF8833) # error "One of CONFIG_NOKIA6100_S1D15G10 or CONFIG_NOKIA6100_PCF8833 must be defined" #endif /* Delay geometry defaults */ #ifndef CONFIG_NOKIA6100_INVERT # define CONFIG_NOKIA6100_INVERT 1 #endif #ifndef CONFIG_NOKIA6100_MY # define CONFIG_NOKIA6100_MY 0 #endif #ifndef CONFIG_NOKIA6100_MX # define CONFIG_NOKIA6100_MX 1 #endif #ifndef CONFIG_NOKIA6100_V # define CONFIG_NOKIA6100_V 0 #endif #ifndef CONFIG_NOKIA6100_ML # define CONFIG_NOKIA6100_ML 0 #endif #ifndef CONFIG_NOKIA6100_RGBORD # define CONFIG_NOKIA6100_RGBORD 0 #endif /* Check contrast selection */ #ifdef CONFIG_NOKIA6100_S1D15G10 # if !defined(CONFIG_LCD_MAXCONTRAST) # define CONFIG_LCD_MAXCONTRAST 63 # endif # if CONFIG_LCD_MAXCONTRAST != 63 # error "CONFIG_LCD_MAXCONTRAST must be 63 with the Epson LCD controller" # endif # define NOKIA_DEFAULT_CONTRAST 32 #else /* CONFIG_NOKIA6100_PCF8833 */ # if !defined(CONFIG_LCD_MAXCONTRAST) # define CONFIG_LCD_MAXCONTRAST 127 # endif # if CONFIG_LCD_MAXCONTRAST != 127 # error "CONFIG_LCD_MAXCONTRAST must be 127 with the Phillips LCD controller" # endif # define NOKIA_DEFAULT_CONTRAST 48 #endif /* Check initial backlight setting */ #ifndef CONFIG_NOKIA6100_BLINIT # define CONFIG_NOKIA6100_BLINIT (NOKIA_DEFAULT_CONTRAST/3) #endif /* Word width must be 9 bits */ #if defined(CONFIG_NOKIA6100_WORDWIDTH) && CONFIG_NOKIA6100_WORDWIDTH != 9 # error "CONFIG_NOKIA6100_WORDWIDTH must be 9" #endif #ifndef CONFIG_NOKIA6100_WORDWIDTH # define CONFIG_NOKIA6100_WORDWIDTH 9 #endif /* If bit 9 is set, the byte is data; clear for commands */ #define NOKIA_LCD_DATA (1 << 8) /* Define CONFIG_LCD_REGDEBUG to enable register-level debug output. * (Verbose debug must also be enabled) */ #ifndef CONFIG_DEBUG # undef CONFIG_DEBUG_VERBOSE # undef CONFIG_DEBUG_GRAPHICS #endif #ifndef CONFIG_DEBUG_VERBOSE # undef CONFIG_LCD_REGDEBUG #endif /* Controller independent definitions *************************************************/ #ifdef CONFIG_NOKIA6100_PCF8833 # define LCD_NOP PCF8833_NOP # define LCD_RAMWR PCF8833_RAMWR # define LCD_PASET PCF8833_PASET # define LCD_CASET PCF8833_CASET #endif #ifdef CONFIG_NOKIA6100_S1D15G10 # define LCD_NOP S1D15G10_NOP # define LCD_RAMWR S1D15G10_RAMWR # define LCD_PASET S1D15G10_PASET # define LCD_CASET S1D15G10_CASET #endif /* Color Properties *******************************************************************/ /* Display Resolution */ #define NOKIA_XRES 132 #define NOKIA_YRES 132 /* Color depth and format */ #if CONFIG_NOKIA6100_BPP == 8 # define NOKIA_BPP 8 # define NOKIA_COLORFMT FB_FMT_RGB8_332 # define NOKIA_STRIDE NOKIA_XRES # define NOKIA_PIX2BYTES(p) (p) #elif CONFIG_NOKIA6100_BPP == 12 # define NOKIA_BPP 12 # define NOKIA_COLORFMT FB_FMT_RGB12_444 # define NOKIA_STRIDE ((3*NOKIA_XRES+1)/2) # define NOKIA_PIX2BYTES(p) ((3*(p)+1)/2) #elif CONFIG_NOKIA6100_BPP == 16 # define NOKIA_BPP 16 # define NOKIA_COLORFMT FB_FMT_RGB16_565 # define NOKIA_STRIDE (2*NOKIA_XRES) # define NOKIA_PIX2BYTES(p) (2*(p)) #endif /* Handle any potential strange behavior at edges */ #if 0 /* REVISIT */ #define NOKIA_PGBIAS 2 /* May not be necessary */ #define NOKIA_COLBIAS 0 #define NOKIA_XBIAS 2 /* May not be necessary, if so need to subtract from XRES */ #define NOKIA_YBIAS 0 #else #define NOKIA_PGBIAS 0 #define NOKIA_COLBIAS 0 #define NOKIA_XBIAS 0 #define NOKIA_YBIAS 0 #endif #define NOKIA_ENDPAGE 131 #define NOKIA_ENDCOL 131 /* Debug ******************************************************************************/ #ifdef CONFIG_LCD_REGDEBUG # define lcddbg(format, ...) llvdbg(format, ##__VA_ARGS__) #else # define lcddbg(x...) #endif /************************************************************************************** * Private Type Definition **************************************************************************************/ /* This structure describes the state of this driver */ struct nokia_dev_s { /* Publically visible device structure */ struct lcd_dev_s dev; /* Private LCD-specific information follows */ FAR struct spi_dev_s *spi; /* Contained SPI driver instance */ uint8_t contrast; /* Current contrast setting */ uint8_t power; /* Current power (backlight) setting */ }; /************************************************************************************** * Private Function Protototypes **************************************************************************************/ /* SPI support */ static inline void nokia_configspi(FAR struct spi_dev_s *spi); #ifdef CONFIG_SPI_OWNBUS static inline void nokia_select(FAR struct spi_dev_s *spi); static inline void nokia_deselect(FAR struct spi_dev_s *spi); #else static void nokia_select(FAR struct spi_dev_s *spi); static void nokia_deselect(FAR struct spi_dev_s *spi); #endif static void nokia_sndcmd(FAR struct spi_dev_s *spi, const uint8_t cmd); static void nokia_cmdarray(FAR struct spi_dev_s *spi, int len, const uint8_t *cmddata); static void nokia_clrram(FAR struct spi_dev_s *spi); /* LCD Data Transfer Methods */ static int nokia_putrun(fb_coord_t row, fb_coord_t col, FAR const uint8_t *buffer, size_t npixels); static int nokia_getrun(fb_coord_t row, fb_coord_t col, FAR uint8_t *buffer, size_t npixels); /* LCD Configuration */ static int nokia_getvideoinfo(FAR struct lcd_dev_s *dev, FAR struct fb_videoinfo_s *vinfo); static int nokia_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 nokia_getpower(struct lcd_dev_s *dev); static int nokia_setpower(struct lcd_dev_s *dev, int power); static int nokia_getcontrast(struct lcd_dev_s *dev); static int nokia_setcontrast(struct lcd_dev_s *dev, unsigned int contrast); /* Initialization */ static int nokia_initialize(struct nokia_dev_s *priv); /************************************************************************************** * Private Data **************************************************************************************/ /* 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. */ #if CONFIG_NOKIA6100_BPP == 8 static uint8_t g_runbuffer[NOKIA_XRES]; #elif CONFIG_NOKIA6100_BPP == 12 static uint8_t g_runbuffer[(3*NOKIA_XRES+1)/2]; #else /* CONFIG_NOKIA6100_BPP == 16 */ static uint16_t g_runbuffer[NOKIA_XRES]; #endif /* g_rowbuf is another buffer, but used internally by the Nokia 6100 driver in order * expand the pixel data into 9-bit data needed by the LCD. There are some * customizations that would eliminate the need for this extra buffer and for the * extra expansion/copy, but those customizations would require a special, non-standard * SPI driver that could expand 8- to 9-bit data on the fly. */ static uint16_t g_rowbuf[NOKIA_STRIDE+1]; /* Device Driver Data Structures ******************************************************/ /* This structure describes the overall LCD video controller */ static const struct fb_videoinfo_s g_videoinfo = { .fmt = NOKIA_COLORFMT, /* Color format: RGB16-565: RRRR RGGG GGGB BBBB */ .xres = NOKIA_XRES, /* Horizontal resolution in pixel columns */ .yres = NOKIA_YRES, /* Vertical resolution in pixel rows */ .nplanes = 1, /* Number of color planes supported */ }; /* This is the standard, NuttX Plane information object */ static const struct lcd_planeinfo_s g_planeinfo = { .putrun = nokia_putrun, /* Put a run into LCD memory */ .getrun = nokia_getrun, /* Get a run from LCD memory */ .buffer = (uint8_t*)g_runbuffer, /* Run scratch buffer */ .bpp = NOKIA_BPP, /* Bits-per-pixel */ }; /* This is the standard, NuttX LCD driver object */ static struct nokia_dev_s g_lcddev = { .dev = { /* LCD Configuration */ .getvideoinfo = nokia_getvideoinfo, .getplaneinfo = nokia_getplaneinfo, /* LCD RGB Mapping -- Not supported */ /* Cursor Controls -- Not supported */ /* LCD Specific Controls */ .getpower = nokia_getpower, .setpower = nokia_setpower, .getcontrast = nokia_getcontrast, .setcontrast = nokia_setcontrast, }, }; /* LCD Command Strings ****************************************************************/ #ifdef CONFIG_NOKIA6100_S1D15G10 /* Display control: * P1: Specifies the CL dividing ratio, F1 and F2 drive-pattern switching period. * P2: Specifies the duty of the module on block basis * P3: Specify number of lines to be inversely highlighted on LCD panel * P4: 0: Dispersion P40= 1: Non-dispersion */ #if 1 // CONFIG_NOKIA6100_BPP == 12 static const uint8_t g_disctl[] = { S1D15G10_DISCTL, /* Display control */ DISCTL_CLDIV_2|DISCTL_PERIOD_8, /* P1: Divide clock by 2; switching period = 8 */ //DISCTL_CLDIV_NONE|DISCTL_PERIOD_8, /* P1: No clock division; switching period = 8 */ 32, /* P2: nlines/4 - 1 = 132/4 - 1 = 32 */ 0, /* P3: No inversely highlighted lines */ 0 /* P4: No disperion */ }; #else /* CONFIG_NOKIA6100_BPP == 8 */ static const uint8_t g_disctl[] = { S1D15G10_DISCTL, /* Display control */ DISCTL_CLDIV_2|DISCTL_PERIOD_FLD, /* P1: Divide clock by 2; switching period = field */ 32, /* P2: nlines/4 - 1 = 132/4 - 1 = 32 */ 0, /* P3: No inversely highlighted lines */ 0 /* P4: No disperion */ }; #endif /* Common scan direction: * P1: Cpecify the common output scan direction. */ static const uint8_t g_comscn[] = { S1D15G10_COMSCN, /* Common scan direction */ 1 /* 0x01 = Scan 1->68, 132<-69 */ }; /* Power control: * P1: Turn on or off the liquid crystal driving power circuit, booster/step-down * circuits and voltage follower circuit. */ static const uint8_t g_pwrctr[] = { S1D15G10_PWRCTR, /* Power control */ PWCTR_REFVOLTAGE|PWCTR_REGULATOR|PWCTR_BOOSTER2|PWCTR_BOOSTER1 }; /* Data control: * P1: Specify the normal or inverse display of the page address and also to specify * the page address scanning direction * P2: RGB sequence * P3: Grayscale setup */ static const uint8_t g_datctl[] = { S1D15G10_DATCTL, /* Data control */ 0 #if CONFIG_NOKIA6100_MY != 0 /* Display row direction */ |DATCTL_PGADDR_INV /* Page address inverted */ #endif #if CONFIG_NOKIA6100_MX != 0 /* Display column direction */ |DATCTL_COLADDR_REV /* Column address reversed */ #endif #if CONFIG_NOKIA6100_V != 0 /* Display address direction */ |DATCTL_ADDR_PGDIR /* Address scan in page direction */ #endif , #if CONFIG_NOKIA6100_RGBORD != 0 DATCTL_BGR, /* RGB->BGR */ #else 0, /* RGB->RGB */ #endif #if CONFIG_NOKIA6100_BPP == 8 DATCTL_8GRAY /* Selects 8-bit color */ #elif CONFIG_NOKIA6100_BPP == 12 DATCTL_16GRAY_A /* Selects 16-bit color, Type A */ #else # error "16-bit mode not yet implemented" #endif }; /* Voltage control (contrast setting): * P1: Volume value * P2: Resistance ratio * (May need to be tuned for individual displays) */ static const uint8_t g_volctr[] = { S1D15G10_VOLCTR, /* Volume control */ NOKIA_DEFAULT_CONTRAST, /* Volume value */ 2 /* Resistance ratio */ }; /* 256-color position set (RGBSET8) */ #if CONFIG_NOKIA6100_BPP == 8 static const uint8_t g_rgbset8[] = { S1D15G10_RGBSET8, /* 256-color position set */ 0, 2, 4, 6, 9, 11, 13, 15, /* Red tones */ 0, 2, 4, 6, 9, 11, 13, 15, /* Green tones */ 0, 5, 10, 15 /* Blue tones */ }; #endif /* Page address set (PASET) */ static const uint8_t g_paset[] = { S1D15G10_PASET, /* Page start address set */ NOKIA_PGBIAS, 131 }; /* Column address set (CASET) */ static const uint8_t g_caset[] = { S1D15G10_CASET, /* Column start address set */ NOKIA_COLBIAS, 131 }; #endif /* CONFIG_NOKIA6100_S1D15G10 */ #ifdef CONFIG_NOKIA6100_PCF8833 /* Color interface pixel format (COLMOD) */ #if CONFIG_NOKIA6100_BPP == 12 static const uint8_t g_colmod[] = { PCF8833_COLMOD, /* Color interface pixel format */ PCF8833_FMT_12BPS /* 12 bits-per-pixel */ }; #else /* CONFIG_NOKIA6100_BPP == 8 */ static const uint8_t g_colmod[] = { PCF8833_COLMOD, /* Color interface pixel format */ PCF8833_FMT_8BPS /* 8 bits-per-pixel */ }; #endif /* Memory data access control(MADCTL) */ static const uint8_t g_madctl[] = { PCF8833_MADCTL, /* Memory data access control*/ 0 #ifdef CONFIG_NOKIA6100_RGBORD != 0 |MADCTL_RGB /* RGB->BGR */ #endif #ifdef CONFIG_NOKIA6100_MY != 0 /* Display row direction */ |MADCTL_MY /* Mirror Y */ #endif #ifdef CONFIG_NOKIA6100_MX != 0 /* Display column direction */ |MADCTL_MX /* Mirror X */ #endif #ifdef CONFIG_NOKIA6100_V != 0 /* Display address direction */ |MADCTL_V /* ertical RAM write; in Y direction */ #endif #ifdef CONFIG_NOKIA6100_ML != 0 /* Display scan direction */ |MADCTL_LAO /* Line address order bottom to top */ #endif }; /* Set contrast (SETCON) */ static const uint8_t g_setcon[] = { PCF8833_SETCON, /* Set contrast */ NOKIA_DEFAULT_CONTRAST }; #endif /* CONFIG_NOKIA6100_PCF8833 */ /************************************************************************************** * Private Functions **************************************************************************************/ /************************************************************************************** * Function: nokia_configspi * * Description: * Configure the SPI for use with the Nokia 6100 * * Parameters: * spi - Reference to the SPI driver structure * * Returned Value: * None * * Assumptions: * **************************************************************************************/ static inline void nokia_configspi(FAR struct spi_dev_s *spi) { lcddbg("Mode: %d Bits: %d Frequency: %d\n", CONFIG_NOKIA6100_SPIMODE, CONFIG_NOKIA6100_WORDWIDTH, CONFIG_NOKIA6100_FREQUENCY); /* Configure SPI for the Nokia 6100. But only if we own the SPI bus. Otherwise, don't * bother because it might change. */ #ifdef CONFIG_SPI_OWNBUS SPI_SETMODE(spi, CONFIG_NOKIA6100_SPIMODE); SPI_SETBITS(spi, CONFIG_NOKIA6100_WORDWIDTH); SPI_SETFREQUENCY(spi, CONFIG_NOKIA6100_FREQUENCY) #endif } /************************************************************************************** * Function: nokia_select * * Description: * Select the SPI, locking and re-configuring if necessary * * Parameters: * spi - Reference to the SPI driver structure * * Returned Value: * None * * Assumptions: * **************************************************************************************/ #ifdef CONFIG_SPI_OWNBUS static inline void nokia_select(FAR struct spi_dev_s *spi) { /* We own the SPI bus, so just select the chip */ lcddbg("SELECTED\n"); SPI_SELECT(spi, SPIDEV_DISPLAY, true); } #else static void nokia_select(FAR struct spi_dev_s *spi) { /* Select Nokia 6100 chip (locking the SPI bus in case there are multiple * devices competing for the SPI bus */ lcddbg("SELECTED\n"); SPI_LOCK(spi, true); SPI_SELECT(spi, SPIDEV_DISPLAY, true); /* Now make sure that the SPI bus is configured for the Nokia 6100 (it * might have gotten configured for a different device while unlocked) */ SPI_SETMODE(spi, CONFIG_NOKIA6100_SPIMODE); SPI_SETBITS(spi, CONFIG_NOKIA6100_WORDWIDTH); SPI_SETFREQUENCY(spi, CONFIG_NOKIA6100_FREQUENCY); } #endif /************************************************************************************** * Function: nokia_deselect * * Description: * De-select the SPI * * Parameters: * spi - Reference to the SPI driver structure * * Returned Value: * None * * Assumptions: * **************************************************************************************/ #ifdef CONFIG_SPI_OWNBUS static inline void nokia_deselect(FAR struct spi_dev_s *spi) { /* We own the SPI bus, so just de-select the chip */ lcddbg("DE-SELECTED\n"); SPI_SELECT(spi, SPIDEV_DISPLAY, false); } #else static void nokia_deselect(FAR struct spi_dev_s *spi) { /* De-select Nokia 6100 chip and relinquish the SPI bus. */ lcddbg("DE-SELECTED\n"); SPI_SELECT(spi, SPIDEV_DISPLAY, false); SPI_LOCK(spi, false); } #endif /************************************************************************************** * Name: nokia_sndcmd * * Description: * Send a 1-byte command. * **************************************************************************************/ static void nokia_sndcmd(FAR struct spi_dev_s *spi, const uint8_t cmd) { /* Select the LCD */ lcddbg("cmd: %02x\n", cmd); nokia_select(spi); /* Send the command. Bit 8 == 0 denotes a command */ (void)SPI_SEND(spi, (uint16_t)cmd); /* De-select the LCD */ nokia_deselect(spi); } /************************************************************************************** * Name: nokia_cmddata * * Description: * Send a 1-byte command followed by datlen data bytes. * **************************************************************************************/ static void nokia_cmddata(FAR struct spi_dev_s *spi, uint8_t cmd, int datlen, const uint8_t *data) { uint16_t *rowbuf = g_rowbuf; int i; lcddbg("cmd: %02x datlen: %d\n", cmd, datlen); DEBUGASSERT(datlen <= NOKIA_STRIDE); /* Copy the command into the line buffer. Bit 8 == 0 denotes a command. */ *rowbuf++ = cmd; /* Copy any data after the command into the line buffer */ for (i = 0; i < datlen; i++) { /* Bit 8 == 1 denotes data */ *rowbuf++ = (uint16_t)*data++ | NOKIA_LCD_DATA; } /* Select the LCD */ nokia_select(spi); /* Send the line buffer. */ (void)SPI_SNDBLOCK(spi, g_rowbuf, datlen+1); /* De-select the LCD */ nokia_deselect(spi); } /************************************************************************************** * Name: nokia_ramwr * * Description: * Send a RAMWR command followed by datlen data bytes. * **************************************************************************************/ static void nokia_ramwr(FAR struct spi_dev_s *spi, int datlen, const uint8_t *data) { nokia_cmddata(spi, LCD_RAMWR, datlen, data); } /************************************************************************************** * Name: nokia_cmdarray * * Description: * Send a RAMWR command followed by len-1 data bytes. * **************************************************************************************/ static void nokia_cmdarray(FAR struct spi_dev_s *spi, int len, const uint8_t *cmddata) { #ifdef CONFIG_LCD_REGDEBUG int i; for (i = 0; i < len; i++) { lcddbg("cmddata[%d]: %02x\n", i, cmddata[i]); } #endif nokia_cmddata(spi, cmddata[0], len-1, &cmddata[1]); } /************************************************************************************** * Name: nokia_clrram * * Description: * Send a 1-byte command followed by len-1 data bytes. * **************************************************************************************/ static void nokia_clrram(FAR struct spi_dev_s *spi) { uint16_t *rowbuf = g_rowbuf; int i; /* Set all zero data in the line buffer */ for (i = 0; i < NOKIA_STRIDE; i++) { /* Bit 8 == 1 denotes data */ *rowbuf++ = NOKIA_LCD_DATA; } /* Select the LCD and send the RAMWR command */ nokia_select(spi); SPI_SEND(spi, LCD_RAMWR); /* Send the line buffer, once for each row. */ for (i = 0; i < NOKIA_YRES; i++) { (void)SPI_SNDBLOCK(spi, g_rowbuf, NOKIA_STRIDE); } /* De-select the LCD */ nokia_deselect(spi); } /************************************************************************************** * Name: nokia_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 nokia_putrun(fb_coord_t row, fb_coord_t col, FAR const uint8_t *buffer, size_t npixels) { struct nokia_dev_s *priv = &g_lcddev; FAR struct spi_dev_s *spi = priv->spi; uint16_t cmd[3]; gvdbg("row: %d col: %d npixels: %d\n", row, col, npixels); #if NOKIA_XBIAS > 0 col += NOKIA_XBIAS; #endif #if NOKIA_YBIAS > 0 row += NOKIA_YBIAS; #endif DEBUGASSERT(buffer && col >=0 && (col + npixels) <= NOKIA_XRES && row >= 0 && row < NOKIA_YRES); /* Set up to write the run. */ nokia_select(spi); cmd[0] = LCD_PASET; cmd[1] = col | NOKIA_LCD_DATA; cmd[2] = NOKIA_ENDPAGE | NOKIA_LCD_DATA; (void)SPI_SNDBLOCK(spi, cmd, 3); nokia_deselect(spi); /* De-select the LCD */ nokia_select(spi); cmd[0] = LCD_CASET; cmd[1] = row | NOKIA_LCD_DATA; cmd[2] = NOKIA_ENDCOL | NOKIA_LCD_DATA; (void)SPI_SNDBLOCK(spi, cmd, 3); nokia_deselect(spi); /* Then send the run */ nokia_ramwr(spi, NOKIA_PIX2BYTES(npixels), buffer); return OK; } /************************************************************************************** * Name: nokia_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 nokia_getrun(fb_coord_t row, fb_coord_t col, FAR uint8_t *buffer, size_t npixels) { gvdbg("row: %d col: %d npixels: %d\n", row, col, npixels); DEBUGASSERT(buffer && ((uintptr_t)buffer & 1) == 0); /* At present, this is a write-only LCD driver */ #warning "Not implemented" return -ENOSYS; } /************************************************************************************** * Name: nokia_getvideoinfo * * Description: * Get information about the LCD video controller configuration. * **************************************************************************************/ static int nokia_getvideoinfo(FAR struct lcd_dev_s *dev, FAR struct fb_videoinfo_s *vinfo) { DEBUGASSERT(dev && vinfo); gvdbg("fmt: %d xres: %d yres: %d nplanes: %d\n", g_videoinfo.fmt, g_videoinfo.xres, g_videoinfo.yres, g_videoinfo.nplanes); memcpy(vinfo, &g_videoinfo, sizeof(struct fb_videoinfo_s)); return OK; } /************************************************************************************** * Name: nokia_getplaneinfo * * Description: * Get information about the configuration of each LCD color plane. * **************************************************************************************/ static int nokia_getplaneinfo(FAR struct lcd_dev_s *dev, unsigned int planeno, FAR struct lcd_planeinfo_s *pinfo) { DEBUGASSERT(dev && pinfo && planeno == 0); gvdbg("planeno: %d bpp: %d\n", planeno, g_planeinfo.bpp); memcpy(pinfo, &g_planeinfo, sizeof(struct lcd_planeinfo_s)); return OK; } /************************************************************************************** * Name: nokia_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 nokia_getpower(struct lcd_dev_s *dev) { struct nokia_dev_s *priv = (struct nokia_dev_s *)dev; gvdbg("power: %d\n", priv->power); return priv->power; } /************************************************************************************** * Name: nokia_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 nokia_setpower(struct lcd_dev_s *dev, int power) { struct nokia_dev_s *priv = (struct nokia_dev_s *)dev; int ret; gvdbg("power: %d\n", power); DEBUGASSERT(power <= CONFIG_LCD_MAXPOWER); /* Set new power level. The backlight power is controlled outside of the LCD * assembly and must be managmed by board-specific logic. */ ret = nokia_backlight(power); if (ret == OK) { priv->power = power; } return ret; } /************************************************************************************** * Name: nokia_getcontrast * * Description: * Get the current contrast setting (0-CONFIG_LCD_MAXCONTRAST). * **************************************************************************************/ static int nokia_getcontrast(struct lcd_dev_s *dev) { struct nokia_dev_s *priv = (struct nokia_dev_s *)dev; gvdbg("contrast: %d\n", priv->contrast); return priv->contrast; } /************************************************************************************** * Name: nokia_setcontrast * * Description: * Set LCD panel contrast (0-CONFIG_LCD_MAXCONTRAST). * **************************************************************************************/ static int nokia_setcontrast(struct lcd_dev_s *dev, unsigned int contrast) { struct nokia_dev_s *priv = (struct nokia_dev_s *)dev; if (contrast < CONFIG_LCD_MAXCONTRAST) { #ifdef CONFIG_NOKIA6100_S1D15G10 while (priv->contrast < contrast) { nokia_sndcmd(priv->spi, S1D15G10_VOLUP); priv->contrast++; } while (priv->contrast > contrast) { nokia_sndcmd(priv->spi, S1D15G10_VOLDOWN); priv->contrast--; } #else /* CONFIG_NOKIA6100_PCF8833 */ uint8_t cmd[2]; cmd[0] = PCF8833_SETCON; cmd[1] = priv->contrast; nokia_sndarry(priv->spi, 2, cmd); priv->contrast = contrast; #endif } gvdbg("contrast: %d\n", contrast); return -ENOSYS; } /************************************************************************************** * Name: nokia_initialize * * Description: * Initialize the LCD controller. * **************************************************************************************/ #ifdef CONFIG_NOKIA6100_S1D15G10 static int nokia_initialize(struct nokia_dev_s *priv) { struct spi_dev_s *spi = priv->spi; /* Configure the display */ nokia_cmdarray(spi, sizeof(g_disctl), g_disctl); /* Display control */ nokia_cmdarray(spi, sizeof(g_comscn), g_comscn); /* Common scan direction */ nokia_sndcmd(spi, S1D15G10_OSCON); /* Internal oscilator ON */ nokia_sndcmd(spi, S1D15G10_SLPOUT); /* Sleep out */ nokia_cmdarray(spi, sizeof(g_volctr), g_volctr); /* Volume control (contrast) */ nokia_cmdarray(spi, sizeof(g_pwrctr), g_pwrctr); /* Turn on voltage regulators */ up_mdelay(100); #ifdef CONFIG_NOKIA6100_INVERT nokia_sndcmd(spi, S1D15G10_DISINV); /* Invert display */ #else nokia_sndcmd(spi, S1D15G10_DISNOR); /* Normal display */ #endif nokia_cmdarray(spi, sizeof(g_datctl), g_datctl); /* Data control */ #if CONFIG_NOKIA6100_BPP == 8 nokia_cmdarray(spi, sizeof(g_rgbset8), g_rgbset8); /* Set up color lookup table */ nokia_sndcmd(spi, S1D15G10_NOP); #endif nokia_cmdarray(spi, sizeof(g_paset), g_paset); /* Page address set */ nokia_cmdarray(spi, sizeof(g_paset), g_caset); /* Column address set */ nokia_clrram(spi); nokia_sndcmd(spi, S1D15G10_DISON); /* Display on */ return OK; } #endif #ifdef CONFIG_NOKIA6100_PCF8833 static int nokia_initialize(struct nokia_dev_s *priv) { struct struct spi_dev_s *spi = priv->spi; nokia_sndcmd(spi, PCF8833_SLEEPOUT); /* Exit sleep mode */ nokia_sndcmd(spi, PCF8833_BSTRON); /* Turn on voltage booster */ #ifdef CONFIG_NOKIA6100_INVERT nokia_sndcmd(spi, PCF8833_INVON); /* Invert display */ #else nokia_sndcmd(spi, PCF8833_INVOFF); /* Don't invert display */ #endif nokia_cmdarray(spi, sizeof(g_madctl), g_madctl); /* Memory data access control */ nokia_cmdarray(spi, sizeof(g_colmod), g_colmod); /* Color interface pixel format */ nokia_cmdarray(spi, sizeof(g_setcon), g_setcon); /* Set contrast */ nokia_sndcmd(spi, PCF8833_NOP); /* No operation */ nokia_clrram(spi); nokia_sndcmd(spi, PCF8833_DISPON); /* Display on */ return OK; } #endif /* CONFIG_NOKIA6100_PCF8833 */ /************************************************************************************** * Public Functions **************************************************************************************/ /************************************************************************************** * Name: nokia_lcdinitialize * * Description: * Initialize the NOKIA6100 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). * * Input Parameters: * * spi - A reference to the SPI driver instance. * devno - A value in the range of 0 throuh CONFIG_NOKIA6100_NINTERFACES-1. This * allows support for multiple LCD devices. * * 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 *nokia_lcdinitialize(FAR struct spi_dev_s *spi, unsigned int devno) { struct nokia_dev_s *priv = &g_lcddev; gvdbg("Initializing\n"); DEBUGASSERT(devno == 0); /* Initialize the driver data structure */ priv->spi = spi; /* Save the SPI instance */ priv->contrast = NOKIA_DEFAULT_CONTRAST; /* Initial contrast setting */ /* Configure and enable the LCD controller */ nokia_configspi(spi); if (nokia_initialize(priv) == OK) { /* Turn on the backlight */ nokia_backlight(CONFIG_NOKIA6100_BLINIT); return &priv->dev; } return NULL; }