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flexfb

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notro edited this page May 2, 2013 · 27 revisions

Generic driver for various LCD Controllers.

This driver tries to be a solution for the many LCD Controllers available, without having to write drivers for them all.
One strength is that it is runtime configurable. Download image and start using with an "unsupported" display.

The driver supports both SPI devices: flexfb and platform devices: flexpfb. fbtft_device has support for both.

Parameters

  • height
    Display height (required)
  • width
    Display width (required)
  • init
    Init sequence (required)
    Markers: -1: command begin, -2: millisecond delay, -3: end of init sequence
    No spaces allowed
  • setaddrwin
    Which set_addr_win() implementation to use
    0 - st7735r, hx8340
    1 - ili9320, ili9325
  • buswidth
    Width of databus (default: 8)
  • regwidth
    Width of controller register (default: 8)
  • nobacklight
    Turn off backlight functionality.

Sainsmart 1.8" (ST7735R)

Emulating sainsmart18fb

modprobe fbtft_device name=flexfb
modprobe flexfb width=128 height=160 init=-1,0x01,-2,150,-1,0x11,-2,500,-1,0xB1,0x01,0x2C,0x2D,-1,0xB2,0x01,0x2C,0x2D,-1,0xB3,0x01,0x2C,0x2D,0x01,0x2C,0x2D,-1,0xB4,0x07,-1,0xC0,0xA2,0x02,0x84,-1,0xC1,0xC5,-1,0xC2,0x0A,0x00,-1,0xC3,0x8A,0x2A,-1,0xC4,0x8A,0xEE,-1,0xC5,0x0E,-1,0x20,-1,0x36,0xC0,-1,0x3A,0x05,-1,0xE0,0x0f,0x1a,0x0f,0x18,0x2f,0x28,0x20,0x22,0x1f,0x1b,0x23,0x37,0x00,0x07,0x02,0x10,-1,0xE1,0x0f,0x1b,0x0f,0x17,0x33,0x2c,0x29,0x2e,0x30,0x30,0x39,0x3f,0x00,0x07,0x03,0x10,-1,0x29,-2,100,-1,0x13,-2,10,-3

Adafruit 2.2" (HX8340bn)

Emulating adafruit22fb (no 9-bit emulation support).

modprobe fbtft_device name=flexfb
modprobe flexfb width=176 height=220 buswidth=9 init=-1,0xC1,0xFF,0x83,0x40,-1,0x11,-2,150,-1,0xCA,0x70,0x00,0xD9,-1,0xB0,0x01,0x11,-1,0xC9,0x90,0x49,0x10,0x28,0x28,0x10,0x00,0x06,-2,20,-1,0xC2,0x60,0x71,0x01,0x0E,0x05,0x02,0x09,0x31,0x0A,-1,0xC3,0x67,0x30,0x61,0x17,0x48,0x07,0x05,0x33,-2,10,-1,0xB5,0x35,0x20,0x45,-1,0xB4,0x33,0x25,0x4C,-2,10,-1,0x3A,0x05,-1,0x29,-2,10,-3

ITDB02-2.8 (ILI9325)

Emulating itdb28fb

modprobe fbtft_device name=flexpfb
modprobe flexfb width=240 height=320 regwidth=16 setaddrwin=1 init=-1,0x00E3,0x3008,-1,0x00E7,0x0012,-1,0x00EF,0x1231,-1,0x0001,0x0100,-1,0x0002,0x0700,-1,0x0003,0x1030,-1,0x0004,0x0000,-1,0x0008,0x0207,-1,0x0009,0x0000,-1,0x000A,0x0000,-1,0x000C,0x0000,-1,0x000D,0x0000,-1,0x000F,0x0000,-1,0x0010,0x0000,-1,0x0011,0x0007,-1,0x0012,0x0000,-1,0x0013,0x0000,-2,200,-1,0x0010,0x1690,-1,0x0011,0x0223,-2,50,-1,0x0012,0x000D,-2,50,-1,0x0013,0x1200,-1,0x0029,0x000A,-1,0x002B,0x000C,-2,50,-1,0x0020,0x0000,-1,0x0021,0x0000,-1,0x0030,0x0000,-1,0x0031,0x0506,-1,0x0032,0x0104,-1,0x0035,0x0207,-1,0x0036,0x000F,-1,0x0037,0x0306,-1,0x0038,0x0102,-1,0x0039,0x0707,-1,0x003C,0x0702,-1,0x003D,0x1604,-1,0x0050,0x0000,-1,0x0051,0x00EF,-1,0x0052,0x0000,-1,0x0053,0x013F,-1,0x0060,0xA700,-1,0x0061,0x0001,-1,0x006A,0x0000,-1,0x0080,0x0000,-1,0x0081,0x0000,-1,0x0082,0x0000,-1,0x0083,0x0000,-1,0x0084,0x0000,-1,0x0085,0x0000,-1,0x0090,0x0010,-1,0x0092,0x0600,-1,0x0007,0x0133,-3

ILI9320

Datasheet: http://www.techtoys.com.hk/Displays/TY240240320/ILI9320.pdf
Application notes: http://www.densitron.com/uploadedFiles/Displays/Support/ILI9320AN_V0.92.pdf

modprobe flexfb width=240 height=320 regwidth=16 setaddrwin=1 init=

Init sequence (from application note)
Power configuration will differ between displays. The values from the Application Notes has Vci=2.8V, but most display modules will have Vci=3.3V
See itdb28fb.c for ili9325 calculations.
Gamma curve also differs.

//*************Start Initial Sequence**********//
-1,0x00E5,0x8000,
-1,0x0000,0x0001,
-1,0x0001,0x0100,
-1,0x0002,0x0700,

RGB/BGR is set here
-1,0x0003,0x1030,

-1,0x0004,0x0000,
-1,0x0008,0x0202,
-1,0x0009,0x0000,
-1,0x000A,0x0000,
-1,0x000C,0x0000,
-1,0x000D,0x0000,
-1,0x000F,0x0000,
//*************Power On sequence****************//
-1,0x0010,0x0000,
-1,0x0011,0x0007,
-1,0x0012,0x0000,
-1,0x0013,0x0000,
-2,200,

The following 5 settings will differ between displays.
-1,0x0010,0x17B0,
-1,0x0011,0x0037,
-2,50,
-1,0x0012,0x013C,
-2,50,
-1,0x0013,0x1C00,
-1,0x0029,0x000E,
-2,50,

-1,0x0020,0x0000,
-1,0x0021,0x0000,
//-----------Adjust the Gamma Curve----------//
-1,0x0030,0x0000,
-1,0x0031,0x0505,
-1,0x0032,0x0004,
-1,0x0035,0x0006,
-1,0x0036,0x0707,
-1,0x0037,0x0105,
-1,0x0038,0x0002,
-1,0x0039,0x0707,
-1,0x003C,0x0704,
-1,0x003D,0x0807,

//------------------Set GRAMarea---------------//
-1,0x0050,0x0000,
-1,0x0051,0x00EF,
-1,0x0052,0x0000,
-1,0x0053,0x013F,
-1,0x0060,0x2700,
-1,0x0061,0x0001,
-1,0x006A,0x0000,
//--------------Partial Display Control---------//
-1,0x0080,0x0000,
-1,0x0081,0x0000,
-1,0x0082,0x0000,
-1,0x0083,0x0000,
-1,0x0084,0x0000,
-1,0x0085,0x0000,
//--------------Panel Control-------------------//
-1,0x0090,0x0010,
-1,0x0092,0x0000,
-1,0x0093,0x0003,
-1,0x0095,0x0110,
-1,0x0097,0x0000,
-1,0x0098,0x0000,
-1,0x0007,0x0173,
-3

ILI9341

Watterott MI0283QT-9A uses this, but the driver is broken (See issue).
Datasheet: http://www.displaytech-us.com/sites/default/files/driver-ic-data-sheet/ILI9341_DS_V1.10_20110415.pdf
Application notes: http://focuslcd.com/wp/wp-content/uploads/2012/10/ILI9341_AN_V0.9.pdf

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