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nuttx/drivers/lcd/nokia6100.c
Gregory Nutt cf14f8d1b5 drivers/: Fixes to spacing and alignement
2015-10-10 10:41:00 -06:00

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/**************************************************************************************
* drivers/lcd/nokia6100.c
* Nokia 6100 LCD Display Driver
*
* Copyright (C) 2010-2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* 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 <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/nokia6100.h>
#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<69>s a Philips PCF8833.
* If it has a GE-8 sticker, it<69>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 = (FAR 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;
}
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