Updated the Display driver and changed scripting to use single driver
This commit is contained in:
Melissa LeBlanc-Williams
parent
1d979b9e84
commit
8136d03488
7 changed files with 273 additions and 582 deletions
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@ -197,7 +197,7 @@ def softwareinstall():
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if not shell.run_command("apt-get install -y libts0", True):
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if not shell.run_command("apt-get install -y tslib"):
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warn_exit("Apt failed to install TSLIB!")
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if not shell.run_command("apt-get install -y bc fbi git python-dev python-pip python-smbus python-spidev evtest libts-bin device-tree-compiler"):
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if not shell.run_command("apt-get install -y bc fbi git python3-dev python3-pip python3-smbus python3-spidev evtest libts-bin device-tree-compiler"):
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warn_exit("Apt failed to install software!")
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if not shell.run_command("pip3 install evdev"):
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warn_exit("Pip failed to install software!")
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@ -250,11 +250,11 @@ def update_configtxt(rotation_override=None):
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if not shell.isdir("/lib/modules/{}/build".format(shell.release())):
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warn_exit("Kernel was updated, please reboot now and re-run script!")
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shell.pushd("st7789_module")
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if not shell.run_command("make -C /lib/modules/$(uname -r)/build M=$(pwd) modules"):
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if not shell.run_command("make"):
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warn_exit("Apt failed to compile ST7789V drivers!")
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shell.run_command("mv /lib/modules/{rel}/kernel/drivers/gpu/drm/tiny/mi0283qt.ko /lib/modules/{rel}/kernel/drivers/gpu/drm/tiny/mi0283qt.BACK".format(rel=shell.release()))
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shell.run_command("mv /lib/modules/{rel}/kernel/drivers/staging/fbtft/fb_st7789v.ko /lib/modules/{rel}/kernel/drivers/gpu/drm/tiny/mi0283qt.BACK".format(rel=shell.release()))
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shell.run_command("mv st7789v_ada.ko /lib/modules/{rel}/kernel/drivers/gpu/drm/tiny/mi0283qt.ko".format(rel=shell.release()))
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# Only back up if a copy doesn't already exist, so if script is ran more than once we don't lose the original
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if not shell.exists("/lib/modules/{rel}/kernel/drivers/staging/fbtft/fb_st7789v.BACK".format(rel=shell.release())):
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shell.run_command("mv /lib/modules/{rel}/kernel/drivers/staging/fbtft/fb_st7789v.ko /lib/modules/{rel}/kernel/drivers/staging/fbtft/fb_st7789v.BACK".format(rel=shell.release()))
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shell.run_command("mv fb_st7789v.ko /lib/modules/{rel}/kernel/drivers/staging/fbtft/fb_st7789v.ko".format(rel=shell.release()))
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shell.popd()
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@ -1,5 +1,5 @@
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/*
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* Device Tree overlay for Adafruit Mini PiTFT 1.14" Display
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* Device Tree overlay for Adafruit Mini PiTFT 1.14" 240x240 Display
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*
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*/
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@ -7,72 +7,65 @@
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/plugin/;
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/ {
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compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
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compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
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fragment@0 {
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target = <&spi0>;
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__overlay__ {
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status = "okay";
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fragment@0 {
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target = <&spi0>;
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__overlay__ {
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status = "okay";
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spidev@0{
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status = "disabled";
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};
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spidev@0{
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status = "disabled";
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};
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};
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};
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spidev@1{
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status = "disabled";
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};
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};
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};
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fragment@1 {
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target = <&gpio>;
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__overlay__ {
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pitft_pins: pitft_pins {
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brcm,pins = <25>; /* dc pin */
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brcm,function = <1>; /* out */
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brcm,pull = <0>; /* no pull */
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};
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};
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};
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fragment@1 {
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target = <&gpio>;
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__overlay__ {
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pitft_pins: pitft_pins {
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brcm,pins = <25>;
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brcm,function = <1>; /* out */
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brcm,pull = <0>; /* none */
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};
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};
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};
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fragment@2 {
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target = <&spi0>;
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__overlay__ {
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/* needed to avoid dtc warning */
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#address-cells = <1>;
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#size-cells = <0>;
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fragment@2 {
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target = <&spi0>;
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__overlay__ {
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/* needed to avoid dtc warning */
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#address-cells = <1>;
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#size-cells = <0>;
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pitft: pitft@0{
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compatible = "multi-inno,mi0283qt";
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reg = <0>;
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pinctrl-names = "default";
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pinctrl-0 = <&pitft_pins>;
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pitft: pitft@0{
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compatible = "sitronix,st7789v";
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reg = <0>;
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pinctrl-names = "default";
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pinctrl-0 = <&pitft_pins>;
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spi-max-frequency = <32000000>;
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rotate = <270>;
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width = <135>;
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height = <240>;
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buswidth = <8>;
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dc-gpios = <&gpio 25 0>;
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led-gpios = <&gpio 26 0>;
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debug = <0>;
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};
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};
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};
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spi-max-frequency = <32000000>;
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rotation = <90>;
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width = <136>;
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height = <240>;
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col_offset = <53>;
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row_offset = <40>;
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dc-gpios = <&gpio 25 0>;
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backlight = <&backlight>;
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};
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};
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};
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fragment@3 {
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target-path = "/soc";
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__overlay__ {
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backlight: backlight {
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compatible = "gpio-backlight";
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gpios = <&gpio 22 0>;
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};
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};
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};
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__overrides__ {
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speed = <&pitft>,"spi-max-frequency:0";
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rotation = <&pitft>,"rotation:0";
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width = <&pitft>,"width:0";
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height = <&pitft>,"height:0";
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col_offset = <&pitft>,"col_offset:0";
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row_offset = <&pitft>,"row_offset:0";
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};
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__overrides__ {
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speed = <&pitft>,"spi-max-frequency:0";
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rotate = <&pitft>,"rotate:0";
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width = <&pitft>,"width:0";
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height = <&pitft>,"height:0";
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fps = <&pitft>,"fps:0";
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debug = <&pitft>,"debug:0";
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};
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};
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@ -43,7 +43,7 @@
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#size-cells = <0>;
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pitft: pitft@0{
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compatible = "sitronix,st7789v";
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compatible = "sitronix,st7789v";
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reg = <0>;
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pinctrl-names = "default";
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pinctrl-0 = <&pitft_pins>;
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@ -1,15 +1,13 @@
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obj-m += st7789v_ada.o
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obj-m += fb_st7789v.o
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KDIR ?= /lib/modules/`uname -r`/build
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default:
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$(MAKE) -C $(KDIR) M=$(pwd) modules
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$(MAKE) -C $(KDIR) M=$(shell pwd) modules
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install:
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$(MAKE) -C $(KDIR) M=$(PWD) modules_install
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$(MAKE) -C $(KDIR) M=$(shell pwd) modules_install
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$(DEPMOD)
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clean:
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$(MAKE) -C $(KDIR) M=$(PWD) clean
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$(MAKE) -C $(KDIR) M=$(shell pwd) clean
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@ -16,31 +16,16 @@
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#define DRVNAME "fb_st7789v"
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static unsigned int width;
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module_param(width, uint, 0000);
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MODULE_PARM_DESC(width, "Display width");
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static unsigned int height;
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module_param(height, uint, 0000);
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MODULE_PARM_DESC(height, "Display height");
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static u32 col_offset = 0;
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static u32 row_offset = 0;
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static u8 col_hack_fix_offset = 0;
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static short x_offset = 0;
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static short y_offset = 0;
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#define ST77XX_MADCTL_MY 0x80
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#define ST77XX_MADCTL_MX 0x40
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#define ST77XX_MADCTL_MV 0x20
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#define ST77XX_MADCTL_ML 0x10
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#define ST77XX_MADCTL_BGR 0x08
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#define ST77XX_MADCTL_RGB 0x00
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#define DEFAULT_GAMMA \
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"70 2C 2E 15 10 09 48 33 53 0B 19 18 20 25\n" \
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"70 2C 2E 15 10 09 48 33 53 0B 19 18 20 25"
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#define HSD20_IPS_GAMMA \
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"D0 05 0A 09 08 05 2E 44 45 0F 17 16 2B 33\n" \
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"D0 05 0A 09 08 05 2E 43 45 0F 16 16 2B 33"
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#define HSD20_IPS 1
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/**
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* enum st7789v_command - ST7789V display controller commands
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*
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@ -76,6 +61,18 @@ enum st7789v_command {
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NVGAMCTRL = 0xE1,
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};
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#define MADCTL_BGR BIT(3) /* bitmask for RGB/BGR order */
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#define MADCTL_MV BIT(5) /* bitmask for page/column order */
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#define MADCTL_MX BIT(6) /* bitmask for column address order */
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#define MADCTL_MY BIT(7) /* bitmask for page address order */
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static u32 col1_offset = 0;
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static u32 col2_offset = 0;
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static u32 row1_offset = 0;
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static u32 row2_offset = 0;
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static short x_offset = 0;
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static short y_offset = 0;
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/**
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* init_display() - initialize the display controller
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*
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@ -92,44 +89,85 @@ enum st7789v_command {
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*/
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static int init_display(struct fbtft_par *par)
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{
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printk(KERN_INFO "ST7789 adafruit fbtft driver\n");
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width = par->info->var.xres;
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height = par->info->var.yres;
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if ((width == 0) || (width > 240)) {
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width = 240;
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}
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if ((height == 0) || (height > 320)) {
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height = 320;
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}
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printk(KERN_INFO "Size: (%d, %d)\n", width, height);
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// Go to sleep
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write_reg(par, MIPI_DCS_SET_DISPLAY_OFF);
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// Soft reset
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write_reg(par, MIPI_DCS_SOFT_RESET);
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mdelay(150);
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/* turn off sleep mode */
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write_reg(par, MIPI_DCS_EXIT_SLEEP_MODE);
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mdelay(10);
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mdelay(120);
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/* set pixel format to RGB-565 */
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write_reg(par, MIPI_DCS_SET_PIXEL_FORMAT, MIPI_DCS_PIXEL_FMT_16BIT);
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if (HSD20_IPS)
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write_reg(par, PORCTRL, 0x05, 0x05, 0x00, 0x33, 0x33);
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write_reg(par, MIPI_DCS_SET_ADDRESS_MODE, 0);
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write_reg(par, MIPI_DCS_SET_COLUMN_ADDRESS, 0, 0, 0, 240);
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write_reg(par, MIPI_DCS_SET_PAGE_ADDRESS, 0, 0, 320>>8, 320&0xFF);
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write_reg(par, MIPI_DCS_ENTER_INVERT_MODE); // odd hack, displays are inverted
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write_reg(par, MIPI_DCS_ENTER_NORMAL_MODE);
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mdelay(10);
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else
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write_reg(par, PORCTRL, 0x08, 0x08, 0x00, 0x22, 0x22);
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/*
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* VGH = 13.26V
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* VGL = -10.43V
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*/
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if (HSD20_IPS)
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write_reg(par, GCTRL, 0x75);
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else
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write_reg(par, GCTRL, 0x35);
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/*
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* VDV and VRH register values come from command write
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* (instead of NVM)
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*/
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write_reg(par, VDVVRHEN, 0x01, 0xFF);
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/*
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* VAP = 4.1V + (VCOM + VCOM offset + 0.5 * VDV)
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* VAN = -4.1V + (VCOM + VCOM offset + 0.5 * VDV)
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*/
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if (HSD20_IPS)
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write_reg(par, VRHS, 0x13);
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else
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write_reg(par, VRHS, 0x0B);
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/* VDV = 0V */
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write_reg(par, VDVS, 0x20);
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/* VCOM = 0.9V */
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if (HSD20_IPS)
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write_reg(par, VCOMS, 0x22);
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else
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write_reg(par, VCOMS, 0x20);
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/* VCOM offset = 0V */
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write_reg(par, VCMOFSET, 0x20);
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/*
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* AVDD = 6.8V
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* AVCL = -4.8V
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* VDS = 2.3V
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*/
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write_reg(par, PWCTRL1, 0xA4, 0xA1);
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write_reg(par, MIPI_DCS_SET_DISPLAY_ON);
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if (HSD20_IPS)
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write_reg(par, MIPI_DCS_ENTER_INVERT_MODE);
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return 0;
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}
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static void minipitft_set_addr_win(struct fbtft_par *par, int xs, int ys,
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int xe, int ye)
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{
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xs += x_offset;
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xe += x_offset;
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ys += y_offset;
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ye += y_offset;
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write_reg(par, MIPI_DCS_SET_COLUMN_ADDRESS,
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xs >> 8, xs & 0xFF, xe >> 8, xe & 0xFF);
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write_reg(par, MIPI_DCS_SET_PAGE_ADDRESS,
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ys >> 8, ys & 0xFF, ye >> 8, ye & 0xFF);
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write_reg(par, MIPI_DCS_WRITE_MEMORY_START);
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}
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/**
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* set_var() - apply LCD properties like rotation and BGR mode
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*
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@ -139,36 +177,104 @@ static int init_display(struct fbtft_par *par)
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*/
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static int set_var(struct fbtft_par *par)
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{
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u8 addr_mode = 0;
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u8 madctl_par = 0;
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struct fbtft_display *display = &par->pdata->display;
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u32 width = display->width;
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u32 height = display->height;
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if (par->bgr)
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madctl_par |= MADCTL_BGR;
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if (width < 240) {
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// Display is centered
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row1_offset = row2_offset = (int)((320 - height + 1) / 2);
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col1_offset = (int)((240 - width) / 2);
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col2_offset = (int)((240 - width + 1) / 2);
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} else {
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row1_offset = 0;
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row2_offset = (320 - height);
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col1_offset = col2_offset = (240 - width);
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}
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switch (par->info->var.rotate) {
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case 0:
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addr_mode = 0;
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x_offset = col_offset;
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y_offset = row_offset;
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x_offset = col1_offset;
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y_offset = row1_offset;
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break;
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case 90:
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addr_mode = ST77XX_MADCTL_MV | ST77XX_MADCTL_MX;
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x_offset = row_offset;
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y_offset = col_offset;
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break;
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madctl_par |= (MADCTL_MV | MADCTL_MY);
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x_offset = row1_offset;
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y_offset = col1_offset;
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break;
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case 180:
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addr_mode = ST77XX_MADCTL_MX | ST77XX_MADCTL_MY;
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x_offset = (240 - width) - col_offset + col_hack_fix_offset;
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// hack tweak to account for extra pixel width to make even
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y_offset = (320 - height) - row_offset;
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madctl_par |= (MADCTL_MX | MADCTL_MY);
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x_offset = col2_offset;
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y_offset = row2_offset;
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break;
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case 270:
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addr_mode = ST77XX_MADCTL_MV | ST77XX_MADCTL_MY;
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x_offset = (320 - height) - row_offset;
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y_offset = (240 - width) - col_offset;
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madctl_par |= (MADCTL_MV | MADCTL_MX);
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x_offset = row2_offset;
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y_offset = col2_offset;
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break;
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default:
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return -EINVAL;
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}
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printk(KERN_INFO "Rotation %d offsets %d %d\n", par->info->var.rotate, x_offset, y_offset);
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write_reg(par, MIPI_DCS_SET_ADDRESS_MODE, madctl_par);
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return 0;
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}
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write_reg(par, MIPI_DCS_SET_ADDRESS_MODE, addr_mode);
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/**
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* set_gamma() - set gamma curves
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*
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* @par: FBTFT parameter object
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* @curves: gamma curves
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*
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* Before the gamma curves are applied, they are preprocessed with a bitmask
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* to ensure syntactically correct input for the display controller.
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* This implies that the curves input parameter might be changed by this
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* function and that illegal gamma values are auto-corrected and not
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* reported as errors.
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*
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* Return: 0 on success, < 0 if error occurred.
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*/
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static int set_gamma(struct fbtft_par *par, u32 *curves)
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{
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int i;
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int j;
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int c; /* curve index offset */
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/*
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* Bitmasks for gamma curve command parameters.
|
||||
* The masks are the same for both positive and negative voltage
|
||||
* gamma curves.
|
||||
*/
|
||||
static const u8 gamma_par_mask[] = {
|
||||
0xFF, /* V63[3:0], V0[3:0]*/
|
||||
0x3F, /* V1[5:0] */
|
||||
0x3F, /* V2[5:0] */
|
||||
0x1F, /* V4[4:0] */
|
||||
0x1F, /* V6[4:0] */
|
||||
0x3F, /* J0[1:0], V13[3:0] */
|
||||
0x7F, /* V20[6:0] */
|
||||
0x77, /* V36[2:0], V27[2:0] */
|
||||
0x7F, /* V43[6:0] */
|
||||
0x3F, /* J1[1:0], V50[3:0] */
|
||||
0x1F, /* V57[4:0] */
|
||||
0x1F, /* V59[4:0] */
|
||||
0x3F, /* V61[5:0] */
|
||||
0x3F, /* V62[5:0] */
|
||||
};
|
||||
|
||||
for (i = 0; i < par->gamma.num_curves; i++) {
|
||||
c = i * par->gamma.num_values;
|
||||
for (j = 0; j < par->gamma.num_values; j++)
|
||||
curves[c + j] &= gamma_par_mask[j];
|
||||
write_reg(par, PVGAMCTRL + i,
|
||||
curves[c + 0], curves[c + 1], curves[c + 2],
|
||||
curves[c + 3], curves[c + 4], curves[c + 5],
|
||||
curves[c + 6], curves[c + 7], curves[c + 8],
|
||||
curves[c + 9], curves[c + 10], curves[c + 11],
|
||||
curves[c + 12], curves[c + 13]);
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
|
@ -195,11 +301,13 @@ static struct fbtft_display display = {
|
|||
.height = 320,
|
||||
.gamma_num = 2,
|
||||
.gamma_len = 14,
|
||||
.gamma = DEFAULT_GAMMA,
|
||||
.gamma = HSD20_IPS_GAMMA,
|
||||
.fbtftops = {
|
||||
.init_display = init_display,
|
||||
.set_var = set_var,
|
||||
.set_gamma = set_gamma,
|
||||
.blank = blank,
|
||||
.set_addr_win = minipitft_set_addr_win,
|
||||
},
|
||||
};
|
||||
|
||||
|
|
|
|||
|
|
@ -251,7 +251,8 @@ void fbtft_register_backlight(struct fbtft_par *par);
|
|||
void fbtft_unregister_backlight(struct fbtft_par *par);
|
||||
int fbtft_init_display(struct fbtft_par *par);
|
||||
int fbtft_probe_common(struct fbtft_display *display, struct spi_device *sdev,
|
||||
struct platform_device *pdev);
|
||||
struct platform_device *pdev,
|
||||
const struct of_device_id *dt_ids);
|
||||
int fbtft_remove_common(struct device *dev, struct fb_info *info);
|
||||
|
||||
/* fbtft-io.c */
|
||||
|
|
@ -272,11 +273,13 @@ void fbtft_write_reg8_bus9(struct fbtft_par *par, int len, ...);
|
|||
void fbtft_write_reg16_bus8(struct fbtft_par *par, int len, ...);
|
||||
void fbtft_write_reg16_bus16(struct fbtft_par *par, int len, ...);
|
||||
|
||||
#define FBTFT_REGISTER_DRIVER(_name, _compatible, _display) \
|
||||
#define FBTFT_REGISTER_DRIVER_START(_display) \
|
||||
\
|
||||
static const struct of_device_id dt_ids[]; \
|
||||
\
|
||||
static int fbtft_driver_probe_spi(struct spi_device *spi) \
|
||||
{ \
|
||||
return fbtft_probe_common(_display, spi, NULL); \
|
||||
return fbtft_probe_common(_display, spi, NULL, dt_ids); \
|
||||
} \
|
||||
\
|
||||
static int fbtft_driver_remove_spi(struct spi_device *spi) \
|
||||
|
|
@ -288,7 +291,7 @@ static int fbtft_driver_remove_spi(struct spi_device *spi) \
|
|||
\
|
||||
static int fbtft_driver_probe_pdev(struct platform_device *pdev) \
|
||||
{ \
|
||||
return fbtft_probe_common(_display, NULL, pdev); \
|
||||
return fbtft_probe_common(_display, NULL, pdev, dt_ids); \
|
||||
} \
|
||||
\
|
||||
static int fbtft_driver_remove_pdev(struct platform_device *pdev) \
|
||||
|
|
@ -298,8 +301,16 @@ static int fbtft_driver_remove_pdev(struct platform_device *pdev) \
|
|||
return fbtft_remove_common(&pdev->dev, info); \
|
||||
} \
|
||||
\
|
||||
static const struct of_device_id dt_ids[] = { \
|
||||
{ .compatible = _compatible }, \
|
||||
static const struct of_device_id dt_ids[] = {
|
||||
|
||||
#define FBTFT_COMPATIBLE(_compatible) \
|
||||
{ .compatible = _compatible },
|
||||
|
||||
#define FBTFT_VARIANT_COMPATIBLE(_compatible, _variant) \
|
||||
{ .compatible = _compatible, .data = _variant },
|
||||
|
||||
#define FBTFT_REGISTER_DRIVER_END(_name, _display) \
|
||||
\
|
||||
{}, \
|
||||
}; \
|
||||
\
|
||||
|
|
@ -309,7 +320,7 @@ MODULE_DEVICE_TABLE(of, dt_ids); \
|
|||
static struct spi_driver fbtft_driver_spi_driver = { \
|
||||
.driver = { \
|
||||
.name = _name, \
|
||||
.of_match_table = of_match_ptr(dt_ids), \
|
||||
.of_match_table = dt_ids, \
|
||||
}, \
|
||||
.probe = fbtft_driver_probe_spi, \
|
||||
.remove = fbtft_driver_remove_spi, \
|
||||
|
|
@ -319,7 +330,7 @@ static struct platform_driver fbtft_driver_platform_driver = { \
|
|||
.driver = { \
|
||||
.name = _name, \
|
||||
.owner = THIS_MODULE, \
|
||||
.of_match_table = of_match_ptr(dt_ids), \
|
||||
.of_match_table = dt_ids, \
|
||||
}, \
|
||||
.probe = fbtft_driver_probe_pdev, \
|
||||
.remove = fbtft_driver_remove_pdev, \
|
||||
|
|
@ -344,13 +355,26 @@ static void __exit fbtft_driver_module_exit(void) \
|
|||
module_init(fbtft_driver_module_init); \
|
||||
module_exit(fbtft_driver_module_exit);
|
||||
|
||||
#define FBTFT_REGISTER_DRIVER(_name, _compatible, _display) \
|
||||
FBTFT_REGISTER_DRIVER_START(_display) \
|
||||
FBTFT_COMPATIBLE(_compatible) \
|
||||
FBTFT_REGISTER_DRIVER_END(_name, _display)
|
||||
|
||||
/* Debug macros */
|
||||
|
||||
/* shorthand debug levels */
|
||||
#define DEBUG_LEVEL_1 DEBUG_REQUEST_GPIOS
|
||||
#define DEBUG_LEVEL_2 (DEBUG_LEVEL_1 | DEBUG_DRIVER_INIT_FUNCTIONS | DEBUG_TIME_FIRST_UPDATE)
|
||||
#define DEBUG_LEVEL_3 (DEBUG_LEVEL_2 | DEBUG_RESET | DEBUG_INIT_DISPLAY | DEBUG_BLANK | DEBUG_REQUEST_GPIOS | DEBUG_FREE_GPIOS | DEBUG_VERIFY_GPIOS | DEBUG_BACKLIGHT | DEBUG_SYSFS)
|
||||
#define DEBUG_LEVEL_4 (DEBUG_LEVEL_2 | DEBUG_FB_READ | DEBUG_FB_WRITE | DEBUG_FB_FILLRECT | DEBUG_FB_COPYAREA | DEBUG_FB_IMAGEBLIT | DEBUG_FB_BLANK)
|
||||
#define DEBUG_LEVEL_2 (DEBUG_LEVEL_1 | DEBUG_DRIVER_INIT_FUNCTIONS \
|
||||
| DEBUG_TIME_FIRST_UPDATE)
|
||||
#define DEBUG_LEVEL_3 (DEBUG_LEVEL_2 | DEBUG_RESET | DEBUG_INIT_DISPLAY \
|
||||
| DEBUG_BLANK | DEBUG_REQUEST_GPIOS \
|
||||
| DEBUG_FREE_GPIOS \
|
||||
| DEBUG_VERIFY_GPIOS \
|
||||
| DEBUG_BACKLIGHT | DEBUG_SYSFS)
|
||||
#define DEBUG_LEVEL_4 (DEBUG_LEVEL_2 | DEBUG_FB_READ | DEBUG_FB_WRITE \
|
||||
| DEBUG_FB_FILLRECT \
|
||||
| DEBUG_FB_COPYAREA \
|
||||
| DEBUG_FB_IMAGEBLIT | DEBUG_FB_BLANK)
|
||||
#define DEBUG_LEVEL_5 (DEBUG_LEVEL_3 | DEBUG_UPDATE_DISPLAY)
|
||||
#define DEBUG_LEVEL_6 (DEBUG_LEVEL_4 | DEBUG_LEVEL_5)
|
||||
#define DEBUG_LEVEL_7 0xFFFFFFFF
|
||||
|
|
@ -398,8 +422,8 @@ do { \
|
|||
|
||||
#define fbtft_par_dbg(level, par, format, arg...) \
|
||||
do { \
|
||||
if (unlikely(par->debug & level)) \
|
||||
dev_info(par->info->device, format, ##arg); \
|
||||
if (unlikely((par)->debug & (level))) \
|
||||
dev_info((par)->info->device, format, ##arg); \
|
||||
} while (0)
|
||||
|
||||
#define fbtft_par_dbg_hex(level, par, dev, type, buf, num, format, arg...) \
|
||||
|
|
|
|||
|
|
@ -1,432 +0,0 @@
|
|||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
/*
|
||||
* DRM driver for ST7789V panels with flexible config
|
||||
*
|
||||
* Copyright 2021 Melissa LeBlanc-Williams
|
||||
* Copyright 2019 Limor Fried
|
||||
* Copyright 2016 Noralf Trønnes
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; either version 2 of the License, or
|
||||
* (at your option) any later version.
|
||||
*/
|
||||
|
||||
#include <linux/backlight.h>
|
||||
#include <linux/delay.h>
|
||||
#include <linux/gpio/consumer.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/property.h>
|
||||
#include <linux/regulator/consumer.h>
|
||||
#include <linux/spi/spi.h>
|
||||
#include <linux/version.h>
|
||||
|
||||
#include <drm/drm_atomic_helper.h>
|
||||
#include <drm/drm_damage_helper.h>
|
||||
#include <drm/drm_drv.h>
|
||||
#include <drm/drm_fb_cma_helper.h>
|
||||
#include <drm/drm_fb_helper.h>
|
||||
#include <drm/drm_fourcc.h>
|
||||
#include <drm/drm_gem_cma_helper.h>
|
||||
#include <drm/drm_gem_framebuffer_helper.h>
|
||||
#include <drm/drm_mipi_dbi.h>
|
||||
#include <drm/drm_rect.h>
|
||||
#include <drm/drm_vblank.h>
|
||||
#include <drm/drm_modeset_helper.h>
|
||||
#include <video/mipi_display.h>
|
||||
|
||||
#define ST77XX_MADCTL_MY 0x80
|
||||
#define ST77XX_MADCTL_MX 0x40
|
||||
#define ST77XX_MADCTL_MV 0x20
|
||||
#define ST77XX_MADCTL_ML 0x10
|
||||
#define ST77XX_MADCTL_BGR 0x08
|
||||
#define ST77XX_MADCTL_RGB 0x00
|
||||
|
||||
|
||||
static u32 col_offset = 0;
|
||||
static u32 row_offset = 0;
|
||||
static u8 col_hack_fix_offset = 0;
|
||||
static short x_offset = 0;
|
||||
static short y_offset = 0;
|
||||
|
||||
|
||||
static void st7789vada_fb_dirty(struct drm_framebuffer *fb, struct drm_rect *rect)
|
||||
{
|
||||
struct drm_gem_cma_object *cma_obj = drm_fb_cma_get_gem_obj(fb, 0);
|
||||
struct mipi_dbi_dev *dbidev = drm_to_mipi_dbi_dev(fb->dev);
|
||||
unsigned int height = rect->y2 - rect->y1;
|
||||
unsigned int width = rect->x2 - rect->x1;
|
||||
struct mipi_dbi *dbi = &dbidev->dbi;
|
||||
bool swap = dbi->swap_bytes;
|
||||
u16 x1, x2, y1, y2;
|
||||
int idx, ret = 0;
|
||||
bool full;
|
||||
void *tr;
|
||||
|
||||
#if LINUX_VERSION_CODE <= KERNEL_VERSION(5,8,0)
|
||||
if (!dbidev->enabled)
|
||||
return;
|
||||
#endif
|
||||
|
||||
if (!drm_dev_enter(fb->dev, &idx))
|
||||
return;
|
||||
|
||||
full = width == fb->width && height == fb->height;
|
||||
|
||||
DRM_DEBUG_KMS("Flushing [FB:%d] " DRM_RECT_FMT "\n", fb->base.id, DRM_RECT_ARG(rect));
|
||||
|
||||
if (!dbi->dc || !full || swap ||
|
||||
fb->format->format == DRM_FORMAT_XRGB8888) {
|
||||
tr = dbidev->tx_buf;
|
||||
ret = mipi_dbi_buf_copy(dbidev->tx_buf, fb, rect, swap);
|
||||
if (ret)
|
||||
goto err_msg;
|
||||
} else {
|
||||
tr = cma_obj->vaddr;
|
||||
}
|
||||
|
||||
x1 = rect->x1 + x_offset;
|
||||
x2 = rect->x2 - 1 + x_offset;
|
||||
y1 = rect->y1 + y_offset;
|
||||
y2 = rect->y2 - 1 + y_offset;
|
||||
|
||||
//printk(KERN_INFO "setaddrwin (%d, %d) -> (%d, %d) offsets: %d & %d \n", x1, y1, x2, y2, x_offset, y_offset);
|
||||
|
||||
mipi_dbi_command(dbi, MIPI_DCS_SET_COLUMN_ADDRESS,
|
||||
(x1 >> 8) & 0xFF, x1 & 0xFF,
|
||||
(x2 >> 8) & 0xFF, x2 & 0xFF);
|
||||
mipi_dbi_command(dbi, MIPI_DCS_SET_PAGE_ADDRESS,
|
||||
(y1 >> 8) & 0xFF, y1 & 0xFF,
|
||||
(y2 >> 8) & 0xFF, y2 & 0xFF);
|
||||
|
||||
ret = mipi_dbi_command_buf(dbi, MIPI_DCS_WRITE_MEMORY_START, tr,
|
||||
width*height * 2);
|
||||
err_msg:
|
||||
if (ret)
|
||||
dev_err_once(fb->dev->dev, "Failed to update display %d\n", ret);
|
||||
|
||||
drm_dev_exit(idx);
|
||||
}
|
||||
|
||||
|
||||
|
||||
static void st7789vada_pipe_update(struct drm_simple_display_pipe *pipe,
|
||||
struct drm_plane_state *old_state)
|
||||
{
|
||||
struct drm_plane_state *state = pipe->plane.state;
|
||||
struct drm_crtc *crtc = &pipe->crtc;
|
||||
struct drm_rect rect;
|
||||
|
||||
if (drm_atomic_helper_damage_merged(old_state, state, &rect))
|
||||
st7789vada_fb_dirty(state->fb, &rect);
|
||||
|
||||
if (crtc->state->event) {
|
||||
spin_lock_irq(&crtc->dev->event_lock);
|
||||
drm_crtc_send_vblank_event(crtc, crtc->state->event);
|
||||
spin_unlock_irq(&crtc->dev->event_lock);
|
||||
crtc->state->event = NULL;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
static struct drm_display_mode st7789vada_mode = {
|
||||
DRM_SIMPLE_MODE(240, 320, 58, 43),
|
||||
};
|
||||
|
||||
DEFINE_DRM_GEM_CMA_FOPS(st7789vada_fops);
|
||||
|
||||
#if LINUX_VERSION_CODE <= KERNEL_VERSION(5,8,0)
|
||||
static struct drm_driver st7789vada_driver = {
|
||||
.driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC,
|
||||
.fops = &st7789vada_fops,
|
||||
.release = mipi_dbi_release,
|
||||
DRM_GEM_CMA_VMAP_DRIVER_OPS,
|
||||
.debugfs_init = mipi_dbi_debugfs_init,
|
||||
.name = "st7789vada",
|
||||
.desc = "ST7789V Adafruit",
|
||||
.date = "20200727",
|
||||
.major = 1,
|
||||
.minor = 0,
|
||||
};
|
||||
#else
|
||||
static struct drm_driver st7789vada_driver = {
|
||||
.driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC,
|
||||
.fops = &st7789vada_fops,
|
||||
DRM_GEM_CMA_DRIVER_OPS_VMAP,
|
||||
.debugfs_init = mipi_dbi_debugfs_init,
|
||||
.name = "st7789vada",
|
||||
.desc = "ST7789V Adafruit",
|
||||
.date = "20200727",
|
||||
.major = 1,
|
||||
.minor = 0,
|
||||
};
|
||||
#endif
|
||||
|
||||
static const struct of_device_id st7789vada_of_match[] = {
|
||||
{ .compatible = "multi-inno,mi0283qt" },
|
||||
{},
|
||||
};
|
||||
MODULE_DEVICE_TABLE(of, st7789vada_of_match);
|
||||
|
||||
static const struct spi_device_id st7789vada_id[] = {
|
||||
{ "st7789vada", 0 },
|
||||
{ },
|
||||
};
|
||||
MODULE_DEVICE_TABLE(spi, st7789vada_id);
|
||||
|
||||
|
||||
|
||||
static void st7789vada_enable(struct drm_simple_display_pipe *pipe,
|
||||
struct drm_crtc_state *crtc_state,
|
||||
struct drm_plane_state *plane_state)
|
||||
{
|
||||
struct mipi_dbi_dev *dbidev = drm_to_mipi_dbi_dev(pipe->crtc.dev);
|
||||
struct mipi_dbi *dbi = &dbidev->dbi;
|
||||
u8 addr_mode;
|
||||
u16 width = st7789vada_mode.htotal;
|
||||
u16 height = st7789vada_mode.vtotal;
|
||||
int ret, idx;
|
||||
|
||||
//printk(KERN_INFO "w/h %d %d\n", width, height);
|
||||
|
||||
if (!drm_dev_enter(pipe->crtc.dev, &idx))
|
||||
return;
|
||||
|
||||
DRM_DEBUG_KMS("\n");
|
||||
|
||||
ret = mipi_dbi_poweron_conditional_reset(dbidev);
|
||||
if (ret < 0)
|
||||
goto out_exit;
|
||||
if (ret == 1)
|
||||
goto out_enable;
|
||||
|
||||
mipi_dbi_command(dbi, MIPI_DCS_SET_DISPLAY_OFF);
|
||||
|
||||
mipi_dbi_command(dbi, MIPI_DCS_SOFT_RESET);
|
||||
msleep(150);
|
||||
mipi_dbi_command(dbi, MIPI_DCS_EXIT_SLEEP_MODE);
|
||||
msleep(10);
|
||||
mipi_dbi_command(dbi, MIPI_DCS_SET_PIXEL_FORMAT, 0x55); // 16 bit color
|
||||
msleep(10);
|
||||
mipi_dbi_command(dbi, MIPI_DCS_SET_ADDRESS_MODE, 0);
|
||||
mipi_dbi_command(dbi, MIPI_DCS_SET_COLUMN_ADDRESS, 0, 0, 0, 240);
|
||||
mipi_dbi_command(dbi, MIPI_DCS_SET_PAGE_ADDRESS, 0, 0, 320>>8, 320&0xFF);
|
||||
mipi_dbi_command(dbi, MIPI_DCS_ENTER_INVERT_MODE); // odd hack, displays are inverted
|
||||
mipi_dbi_command(dbi, MIPI_DCS_ENTER_NORMAL_MODE);
|
||||
msleep(10);
|
||||
mipi_dbi_command(dbi, MIPI_DCS_SET_DISPLAY_ON);
|
||||
msleep(10);
|
||||
|
||||
out_enable:
|
||||
/* The PiTFT has a hardware reset circuit that
|
||||
* resets only on power-on and not on each reboot through
|
||||
* a gpio like the rpi-display does.
|
||||
* As a result, we need to always apply the rotation value
|
||||
* regardless of the display "on/off" state.
|
||||
*/
|
||||
|
||||
|
||||
switch (dbidev->rotation) {
|
||||
default:
|
||||
addr_mode = 0;
|
||||
x_offset = col_offset;
|
||||
y_offset = row_offset;
|
||||
break;
|
||||
case 90:
|
||||
addr_mode = ST77XX_MADCTL_MV | ST77XX_MADCTL_MX;
|
||||
x_offset = row_offset;
|
||||
y_offset = col_offset;
|
||||
break;
|
||||
case 180:
|
||||
addr_mode = ST77XX_MADCTL_MX | ST77XX_MADCTL_MY;
|
||||
x_offset = (240 - width) - col_offset + col_hack_fix_offset;
|
||||
// hack tweak to account for extra pixel width to make even
|
||||
y_offset = (320 - height) - row_offset;
|
||||
break;
|
||||
case 270:
|
||||
addr_mode = ST77XX_MADCTL_MV | ST77XX_MADCTL_MY;
|
||||
x_offset = (320 - height) - row_offset;
|
||||
y_offset = (240 - width) - col_offset;
|
||||
break;
|
||||
}
|
||||
//printk(KERN_INFO "Rotation offsets %d %d\n", x_offset, y_offset);
|
||||
|
||||
mipi_dbi_command(dbi, MIPI_DCS_SET_ADDRESS_MODE, addr_mode);
|
||||
|
||||
mipi_dbi_command(dbi, MIPI_DCS_SET_DISPLAY_ON);
|
||||
|
||||
mipi_dbi_enable_flush(dbidev, crtc_state, plane_state);
|
||||
out_exit:
|
||||
drm_dev_exit(idx);
|
||||
}
|
||||
|
||||
|
||||
|
||||
static const struct drm_simple_display_pipe_funcs st7789vada_pipe_funcs = {
|
||||
.enable = st7789vada_enable,
|
||||
.disable = mipi_dbi_pipe_disable,
|
||||
.update = st7789vada_pipe_update,
|
||||
.prepare_fb = drm_gem_fb_simple_display_pipe_prepare_fb,
|
||||
};
|
||||
|
||||
|
||||
|
||||
static int st7789vada_probe(struct spi_device *spi)
|
||||
{
|
||||
struct device *dev = &spi->dev;
|
||||
struct mipi_dbi_dev *dbidev;
|
||||
struct drm_device *drm;
|
||||
struct mipi_dbi *dbi;
|
||||
struct gpio_desc *dc;
|
||||
u32 rotation = 0;
|
||||
u32 width = 240;
|
||||
u32 height = 320;
|
||||
int ret;
|
||||
|
||||
dbidev = kzalloc(sizeof(*dbidev), GFP_KERNEL);
|
||||
if (!dbidev)
|
||||
return -ENOMEM;
|
||||
|
||||
//printk(KERN_INFO "ST7789 fake driver\n");
|
||||
|
||||
dbi = &dbidev->dbi;
|
||||
#if LINUX_VERSION_CODE <= KERNEL_VERSION(5,8,0)
|
||||
drm = &dbidev->drm;
|
||||
ret = devm_drm_dev_init(dev, drm, &st7789vada_driver);
|
||||
#else
|
||||
drm = drm_dev_alloc(&st7789vada_driver, dev);
|
||||
ret = drm_dev_register(drm, 0);
|
||||
#endif
|
||||
|
||||
if (ret) {
|
||||
kfree(dbidev);
|
||||
return ret;
|
||||
}
|
||||
|
||||
drm_mode_config_init(drm);
|
||||
|
||||
dbi->reset = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH);
|
||||
if (IS_ERR(dbi->reset)) {
|
||||
DRM_DEV_ERROR(dev, "Failed to get gpio 'reset'\n");
|
||||
return PTR_ERR(dbi->reset);
|
||||
}
|
||||
|
||||
dc = devm_gpiod_get_optional(dev, "dc", GPIOD_OUT_LOW);
|
||||
if (IS_ERR(dc)) {
|
||||
DRM_DEV_ERROR(dev, "Failed to get gpio 'dc'\n");
|
||||
return PTR_ERR(dc);
|
||||
}
|
||||
|
||||
dbidev->regulator = devm_regulator_get(dev, "power");
|
||||
if (IS_ERR(dbidev->regulator))
|
||||
return PTR_ERR(dbidev->regulator);
|
||||
|
||||
dbidev->backlight = devm_of_find_backlight(dev);
|
||||
if (IS_ERR(dbidev->backlight))
|
||||
return PTR_ERR(dbidev->backlight);
|
||||
|
||||
device_property_read_u32(dev, "rotation", &rotation);
|
||||
//printk(KERN_INFO "Rotation %d\n", rotation);
|
||||
|
||||
device_property_read_u32(dev, "width", &width);
|
||||
if (width % 2) {
|
||||
width +=1; // odd width will cause a kernel panic
|
||||
col_hack_fix_offset = 3;
|
||||
} else {
|
||||
col_hack_fix_offset = 0;
|
||||
}
|
||||
//printk(KERN_INFO "Width %d\n", width);
|
||||
if ((width == 0) || (width > 240)) {
|
||||
width = 240; // default to full framebuff;
|
||||
}
|
||||
device_property_read_u32(dev, "height", &height);
|
||||
//printk(KERN_INFO "Height %d\n", height);
|
||||
if ((height == 0) || (height > 320)) {
|
||||
height = 320; // default to full framebuff;
|
||||
}
|
||||
|
||||
st7789vada_mode.hdisplay = st7789vada_mode.hsync_start =
|
||||
st7789vada_mode.hsync_end = st7789vada_mode.htotal = width;
|
||||
st7789vada_mode.vdisplay = st7789vada_mode.vsync_start =
|
||||
st7789vada_mode.vsync_end = st7789vada_mode.vtotal = height;
|
||||
|
||||
|
||||
device_property_read_u32(dev, "col_offset", &col_offset);
|
||||
//printk(KERN_INFO "Column offset %d\n", col_offset);
|
||||
|
||||
device_property_read_u32(dev, "row_offset", &row_offset);
|
||||
//printk(KERN_INFO "Row offset %d\n", row_offset);
|
||||
|
||||
|
||||
ret = mipi_dbi_spi_init(spi, dbi, dc);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
/* Cannot read from this controller via SPI */
|
||||
dbi->read_commands = NULL;
|
||||
|
||||
ret = mipi_dbi_dev_init(dbidev, &st7789vada_pipe_funcs, &st7789vada_mode, rotation);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
drm_mode_config_reset(drm);
|
||||
|
||||
ret = drm_dev_register(drm, 0);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
spi_set_drvdata(spi, drm);
|
||||
|
||||
drm_fbdev_generic_setup(drm, 0);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int st7789vada_remove(struct spi_device *spi)
|
||||
{
|
||||
struct drm_device *drm = spi_get_drvdata(spi);
|
||||
|
||||
drm_dev_unplug(drm);
|
||||
drm_atomic_helper_shutdown(drm);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void st7789vada_shutdown(struct spi_device *spi)
|
||||
{
|
||||
drm_atomic_helper_shutdown(spi_get_drvdata(spi));
|
||||
}
|
||||
|
||||
static int __maybe_unused st7789vada_pm_suspend(struct device *dev)
|
||||
{
|
||||
return drm_mode_config_helper_suspend(dev_get_drvdata(dev));
|
||||
}
|
||||
|
||||
static int __maybe_unused st7789vada_pm_resume(struct device *dev)
|
||||
{
|
||||
drm_mode_config_helper_resume(dev_get_drvdata(dev));
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct dev_pm_ops st7789vada_pm_ops = {
|
||||
SET_SYSTEM_SLEEP_PM_OPS(st7789vada_pm_suspend, st7789vada_pm_resume)
|
||||
};
|
||||
|
||||
static struct spi_driver st7789vada_spi_driver = {
|
||||
.driver = {
|
||||
.name = "st7789vada",
|
||||
.owner = THIS_MODULE,
|
||||
.of_match_table = st7789vada_of_match,
|
||||
.pm = &st7789vada_pm_ops,
|
||||
},
|
||||
.id_table = st7789vada_id,
|
||||
.probe = st7789vada_probe,
|
||||
.remove = st7789vada_remove,
|
||||
.shutdown = st7789vada_shutdown,
|
||||
};
|
||||
module_spi_driver(st7789vada_spi_driver);
|
||||
|
||||
MODULE_DESCRIPTION("Sitronix ST7789V Flexible DRM driver");
|
||||
MODULE_AUTHOR("Noralf Trønnes + Limor Fried + Melissa LeBlanc-Williams");
|
||||
MODULE_LICENSE("GPL");
|
||||
Loading…
Reference in a new issue