/**************************************************************************************
* configs/sam3u-ek/src/up_lcd.c
* arch/arm/src/board/up_lcd.c
*
* Copyright (C) 2010 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* 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.
*
**************************************************************************************/
/**************************************************************************************
* The SAM3U-EK developement board features a TFT/Transmissive color LCD module with
* touch-screen, FTM280C12D, with integratd driver IC HX8346. The LCD display size
* is 2.8 inches, with a native resolution of 240 x 320 pixels.
*
* LCD Module Pin Out: AT91SAM3U PIO:
* -------------------------------------------- --------------------------------------
* Pin Symbol Function LCD PeriphA PeriphB Extra
* ---- ------ -------------------------------- -------------- -------- ------- ------
* 1 GND Ground N/A --- --- ---
* 2 CS Chip Select PC16 NCS2 PWML3 AD12BAD5
* 3 RS Register select signal PB8 (see A1) CTS0 A1 AD3
* 4 WR Write operation signal PB23 (NWE) NWR0/NEW PCK1 ---
* 5 RD Read operation signal PB19 (NRD) NRD PWML2 ---
* 6 DB0 Data bus PB9 D0 DTR0 ---
* 7 DB1 Data bus PB10 D1 DSR0 ---
* 8 DB2 Data bus PB11 D2 DCD0 ---
* 9 DB3 Data bus PB12 D3 RI0 ---
* 10 DB4 Data bus PB13 D4 PWMH0 ---
* 11 DB5 Data bus PB14 D5 PWMH1 ---
* 12 DB6 Data bus PB15 D6 PWMH2 ---
* 13 DB7 Data bus PB16 D7 PMWH3 ---
* 14 DB8 Data bus PB25 D8 PWML0 ---
* 15 DB9 Data bus PB26 D9 PWML1 ---
* 16 DB10 Data bus PB27 D10 PWML2 ---
* 17 DB11 Data bus PB28 D11 PWML3 ---
* 18 DB12 Data bus PB29 D12 --- ---
* 19 DB13 Data bus PB30 D13 --- ---
* 20 DB14 Data bus PB31 D14 --- ---
* 21 DB15 Data bus PB6 TIOA1 D15 AD1
* 22 NC No connection N/A --- --- ---
* 23 NC No connection N/A --- --- ---
* 24 RESET Reset signal N/A --- --- ---
* 25 GND Ground N/A --- --- ---
* 26 X+ Touch panel X_RIGHT PA15 SPCK PWMH2 ---
* 27 Y+ Touch panel Y_UP PA14 MOSI --- ---
* 28 X- Touch panel X_LEFT PA13 MISO --- ---
* 29 Y- Touch panel Y_DOWN PC14 A3 NPCS2 ---
* 30 GND Ground N/A --- --- ---
* 31 VDD1 Power supply for digital IO Pad N/A --- --- ---
* 32 VDD2 Power supply for analog circuit N/A --- --- ---
* 33 A1 Power supply for backlight PB8 (see RS) CTS0 A1 AD3
* 34 A2 Power supply for backlight N/A --- --- ---
* 35 A3 Power supply for backlight N/A --- --- ---
* 36 A4 Power supply for backlight N/A --- --- ---
* 37 NC No connection N/A --- --- ---
* 38 NC No connection N/A --- --- ---
* 39 K Backlight ground N/A --- --- ---
*
* The LCD module gets its reset from NRST. As explained previously, this NRST is
* shared with the JTAG port and the push button BP1. The LCD chip select signal is
* connected to NCS2 (a dedicated jumper can disable it, making NCS2 available for
* other custom usage).
*
* The SAM3U4E communicates with the LCD through PIOB where a 16-bit parallel
* �8080-like� protocol data bus has to be implemented by software.
*
* LCD backlight is made of 4 white chip LEDs in parallel, driven by an AAT3194
* charge pump, MN4. The AAT3194 is controlled by the SAM3U4E through a single line
* Simple Serial Control (S2Cwire) interface, which permits to enable, disable, and
* set the LED drive current (LED brightness control) from a 32-level logarithmic
* scale. Four resistors R93/R94/R95/R96 are implemented for optional current
* limitation.
*
* The LCD module integrates a 4-wire touch screen panel controlled by
* MN5, ADS7843, which is a slave device on the SAM3U4E SPI bus. The ADS7843 touch
* ADC auxiliary inputs IN3/IN4 are connected to test points for optional function
* extension.
*
**************************************************************************************/
/**************************************************************************************
* Included Files
**************************************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <stdint.h>
#include <stdbool.h>
#include <errno.h>
#include <debug.h>
#include <nuttx/arch.h>
#include <nuttx/lcd.h>
#include "up_arch.h"
#include "sam3u_internal.h"
#include "sam3uek_internal.h"
/**************************************************************************************
* Pre-processor Definitions
**************************************************************************************/
/* LCD resolution */
#define SAM3UEK_XRES 320
#define SAM3UEK_YRES 240
/* Color depth and format. BPP=16 R=6, G=6, B=5: RRRR RBBB BBBG GGGG */
#define SAM3UEK_BPP 16
#define SAM3UEK_RGBFMT FB_FMT_RGB16_565
/**************************************************************************************
* Private Function Protototypes
**************************************************************************************/
/* LCD Data Transfer Methods */
static int sam3u_putrun(fb_coord_t row, fb_coord_t col, FAR const uint8_t *buffer,
size_t npixels);
static int sam3u_getrun(fb_coord_t row, fb_coord_t col, FAR uint8_t *buffer,
size_t npixels);
/* LCD Configuration */
static int sam3u_getvideoinfo(FAR struct lcd_dev_s *dev,
FAR struct fb_videoinfo_s *vinfo);
static int sam3u_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 sam3u_getpower(struct lcd_dev_s *dev);
static int sam3u_setpower(struct lcd_dev_s *dev, int power);
static int sam3u_getcontrast(struct lcd_dev_s *dev);
static int sam3u_setcontrast(struct lcd_dev_s *dev, unsigned int contrast);
/**************************************************************************************
* Private Function Protototypes
**************************************************************************************/
/* 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 therefor 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.
*/
static uint16_t g_runbuffer[SAM3UEK_XRES];
/* This structure describes the overall LCD video controller */
static struct fb_videoinfo_s g_videoinfo =
{
.fmt = SAM3UEK_RGBFMT, /* Color format: RGB16-565: RRRR RGGG GGGB BBBB */
.xres = SAM3UEK_XRES, /* Horizontal resolution in pixel columns */
.yres = SAM3UEK_YRES, /* Vertical resolution in pixel rows */
.nplanes = 1, /* Number of color planes supported */
};
/* This is the standard, NuttX Plane information object */
static struct lcd_planeinfo_s g_planeinfo =
{
.putrun = sam3u_putrun, /* Put a run into LCD memory */
.getrun = sam3u_getrun, /* Get a run from LCD memory */
.buffer = (uint8_t*)g_runbuffer, /* Run scratch buffer */
.bpp = SAM3UEK_BPP, /* Bits-per-pixel */
};
/* This is the standard, NuttX LCD driver object */
static struct lcd_dev_s g_lcddev_s =
{
/* LCD Configuration */
.getvideoinfo = sam3u_getvideoinfo,
.getplaneinfo = sam3u_getplaneinfo,
/* LCD RGB Mapping -- Not supported */
/* Cursor Controls -- Not supported */
/* LCD Specific Controls */
.getpower = sam3u_getpower,
.setpower = sam3u_setpower,
.getcontrast = sam3u_getcontrast,
.setcontrast = sam3u_setcontrast,
};
/**************************************************************************************
* Private Functions
**************************************************************************************/
/**************************************************************************************
* Name: sam3u_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 sam3u_putrun(fb_coord_t row, fb_coord_t col, FAR const uint8_t *buffer,
size_t npixels)
{
return -ENOSYS;
}
/**************************************************************************************
* Name: sam3u_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 sam3u_getrun(fb_coord_t row, fb_coord_t col, FAR uint8_t *buffer,
size_t npixels)
{
return -ENOSYS;
}
/**************************************************************************************
* Name: sam3u_getvideoinfo
*
* Description:
* Get information about the LCD video controller configuration.
*
**************************************************************************************/
static int sam3u_getvideoinfo(FAR struct lcd_dev_s *dev,
FAR struct fb_videoinfo_s *vinfo)
{
return -ENOSYS;
}
/**************************************************************************************
* Name: sam3u_getplaneinfo
*
* Description:
* Get information about the configuration of each LCD color plane.
*
**************************************************************************************/
static int sam3u_getplaneinfo(FAR struct lcd_dev_s *dev, unsigned int planeno,
FAR struct lcd_planeinfo_s *pinfo)
{
return -ENOSYS;
}
/**************************************************************************************
* Name: sam3u_getpower
*
* Description:
* Get the LCD panel power status (0: full off - CONFIG_LCD_MAXPOWER:
* full on.
*
**************************************************************************************/
static int sam3u_getpower(struct lcd_dev_s *dev)
{
return -ENOSYS;
}
/**************************************************************************************
* Name: sam3u_setpower
*
* Description:
* Enable/disable LCD panel power (0: full off - CONFIG_LCD_MAXPOWERL:
* full on).
*
**************************************************************************************/
static int sam3u_setpower(struct lcd_dev_s *dev, int power)
{
return -ENOSYS;
}
/**************************************************************************************
* Name: sam3u_getcontrast
*
* Description:
* Get the current contrast setting (0-CONFIG_LCD_MAXCONTRAST).
*
**************************************************************************************/
static int sam3u_getcontrast(struct lcd_dev_s *dev)
{
return -ENOSYS;
}
/**************************************************************************************
* Name: sam3u_getcontrast
*
* Description:
* Set LCD panel contrast (0-CONFIG_LCD_MAXCONTRAST).
*
**************************************************************************************/
static int sam3u_setcontrast(struct lcd_dev_s *dev, unsigned int contrast)
{
return -ENOSYS;
}
/**************************************************************************************
* Public Functions
**************************************************************************************/
/**************************************************************************************
* Name: up_lcdinitialize
*
* Description:
* Initialize the LCD video hardware.
*
**************************************************************************************/
int up_lcdinitialize(void)
{
/* Enable LCD EXTCS2 pins */
sam3u_configgpio(GPIO_LCD_NCS2);
sam3u_configgpio(GPIO_LCD_RS);
sam3u_configgpio(GPIO_LCD_NWE);
sam3u_configgpio(GPIO_LCD_NRD);
sam3u_configgpio(GPIO_LCD_D0);
sam3u_configgpio(GPIO_LCD_D1);
sam3u_configgpio(GPIO_LCD_D2);
sam3u_configgpio(GPIO_LCD_D3);
sam3u_configgpio(GPIO_LCD_D4);
sam3u_configgpio(GPIO_LCD_D5);
sam3u_configgpio(GPIO_LCD_D6);
sam3u_configgpio(GPIO_LCD_D7);
sam3u_configgpio(GPIO_LCD_D8);
sam3u_configgpio(GPIO_LCD_D9);
sam3u_configgpio(GPIO_LCD_D10);
sam3u_configgpio(GPIO_LCD_D11);
sam3u_configgpio(GPIO_LCD_D12);
sam3u_configgpio(GPIO_LCD_D13);
sam3u_configgpio(GPIO_LCD_D14);
sam3u_configgpio(GPIO_LCD_D15);
/* Configure LCD Backlight Pin */
sam3u_configgpio(GPIO_LCD_D15);
return -ENOSYS;
}
/**************************************************************************************
* Name: up_lcdgetdev
*
* Description:
* Return a a reference to the LCD object for the specified LCD. This allows
* support for multiple LCD devices.
*
**************************************************************************************/
FAR struct lcd_dev_s *up_lcdgetdev(int lcdddev)
{
return NULL;
}
/**************************************************************************************
* Name: up_lcduninitialize
*
* Description:
* Unitialize the framebuffer support.
*
**************************************************************************************/
void up_lcduninitialize(void)
{
}
