drivers: display: uc81xx: convert to MIPI DBI API
Convert UC81XX display to use MIPI DBI API, as this display uses a SPI 3/4 wire bus. In tree shields using this driver have also had their devicetrees updated to use the new MIPI DBI SPI driver Signed-off-by: Daniel DeGrasse <daniel.degrasse@nxp.com>
This commit is contained in:
Daniel DeGrasse
Alberto Escolar
parent
25cdda10e1
commit
9fdaf43e79
6 changed files with 157 additions and 198 deletions
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@ -8,87 +8,93 @@
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/ {
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chosen {
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zephyr,display = &uc8176_waveshare_epaper_gdew042t2-p;
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zephyr,display = &uc8176_waveshare_epaper_gdew042t2_p;
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};
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};
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&arduino_spi {
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/*
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* GoodDisplay GDEW042T2 with fast partial refresh. Based on
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* configuration from GoodDisplay's Arduino example.
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*/
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uc8176_waveshare_epaper_gdew042t2-p: uc8176@0 {
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compatible = "gooddisplay,gdew042t2", "ultrachip,uc8176";
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spi-max-frequency = <4000000>;
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reg = <0>;
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width = <400>;
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height = <300>;
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dc-gpios = <&arduino_header 15 GPIO_ACTIVE_LOW>; /* D9 */
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mipi_dbi_waveshare_epaper_gdew042t2-p {
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compatible = "zephyr,mipi-dbi-spi";
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spi-dev = <&arduino_spi>;
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dc-gpios = <&arduino_header 15 GPIO_ACTIVE_HIGH>; /* D9 */
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reset-gpios = <&arduino_header 14 GPIO_ACTIVE_LOW>; /* D8 */
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busy-gpios = <&arduino_header 13 GPIO_ACTIVE_LOW>; /* D7 */
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write-only;
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#address-cells = <1>;
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#size-cells = <0>;
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softstart = [ 17 17 17 ];
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/*
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* GoodDisplay GDEW042T2 with fast partial refresh. Based on
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* configuration from GoodDisplay's Arduino example.
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*/
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uc8176_waveshare_epaper_gdew042t2_p: uc8176@0 {
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compatible = "gooddisplay,gdew042t2", "ultrachip,uc8176";
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mipi-max-frequency = <4000000>;
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reg = <0>;
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width = <400>;
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height = <300>;
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busy-gpios = <&arduino_header 13 GPIO_ACTIVE_LOW>; /* D7 */
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full {
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cdi = <0x07>;
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};
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softstart = [ 17 17 17 ];
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partial {
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pwr = [ 03 02 2b 2b ];
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cdi = <0x07>;
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pll = <0x3c>;
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vdcs = <0x08>;
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full {
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cdi = <0x07>;
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};
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lutc = [
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00 01 0E 00 00 01
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00 00 00 00 00 00
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00 00 00 00 00 00
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00 00 00 00 00 00
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00 00 00 00 00 00
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00 00 00 00 00 00
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00 00 00 00 00 00
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00 00
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];
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partial {
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pwr = [ 03 02 2b 2b ];
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cdi = <0x07>;
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pll = <0x3c>;
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vdcs = <0x08>;
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lutww = [
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00 01 0E 00 00 01
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00 00 00 00 00 00
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00 00 00 00 00 00
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00 00 00 00 00 00
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00 00 00 00 00 00
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00 00 00 00 00 00
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00 00 00 00 00 00
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];
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lutc = [
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00 01 0E 00 00 01
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00 00 00 00 00 00
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00 00 00 00 00 00
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00 00 00 00 00 00
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00 00 00 00 00 00
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00 00 00 00 00 00
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00 00 00 00 00 00
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00 00
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];
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lutkw = [
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20 01 0E 00 00 01
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00 00 00 00 00 00
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00 00 00 00 00 00
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00 00 00 00 00 00
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00 00 00 00 00 00
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00 00 00 00 00 00
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00 00 00 00 00 00
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];
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lutww = [
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00 01 0E 00 00 01
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00 00 00 00 00 00
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00 00 00 00 00 00
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00 00 00 00 00 00
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00 00 00 00 00 00
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00 00 00 00 00 00
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00 00 00 00 00 00
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];
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lutwk = [
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10 01 0E 00 00 01
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00 00 00 00 00 00
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00 00 00 00 00 00
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00 00 00 00 00 00
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00 00 00 00 00 00
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00 00 00 00 00 00
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00 00 00 00 00 00
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];
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lutkw = [
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20 01 0E 00 00 01
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00 00 00 00 00 00
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00 00 00 00 00 00
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00 00 00 00 00 00
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00 00 00 00 00 00
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00 00 00 00 00 00
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00 00 00 00 00 00
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];
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lutkk = [
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00 01 0E 00 00 01
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00 00 00 00 00 00
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00 00 00 00 00 00
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00 00 00 00 00 00
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00 00 00 00 00 00
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00 00 00 00 00 00
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00 00 00 00 00 00
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];
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lutwk = [
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10 01 0E 00 00 01
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00 00 00 00 00 00
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00 00 00 00 00 00
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00 00 00 00 00 00
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00 00 00 00 00 00
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00 00 00 00 00 00
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00 00 00 00 00 00
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];
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lutkk = [
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00 01 0E 00 00 01
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00 00 00 00 00 00
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00 00 00 00 00 00
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00 00 00 00 00 00
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00 00 00 00 00 00
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00 00 00 00 00 00
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00 00 00 00 00 00
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];
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};
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};
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};
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};
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@ -9,25 +9,31 @@
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chosen {
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zephyr,display = &uc8176_waveshare_epaper_gdew042t2;
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};
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};
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&arduino_spi {
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uc8176_waveshare_epaper_gdew042t2: uc8176@0 {
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compatible = "gooddisplay,gdew042t2", "ultrachip,uc8176";
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spi-max-frequency = <4000000>;
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reg = <0>;
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width = <400>;
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height = <300>;
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dc-gpios = <&arduino_header 15 GPIO_ACTIVE_LOW>; /* D9 */
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mipi_dbi_waveshare_epaper_gdew042t2 {
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compatible = "zephyr,mipi-dbi-spi";
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spi-dev = <&arduino_spi>;
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dc-gpios = <&arduino_header 15 GPIO_ACTIVE_HIGH>; /* D9 */
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reset-gpios = <&arduino_header 14 GPIO_ACTIVE_LOW>; /* D8 */
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busy-gpios = <&arduino_header 13 GPIO_ACTIVE_LOW>; /* D7 */
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write-only;
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#address-cells = <1>;
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#size-cells = <0>;
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softstart = [17 17 17];
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uc8176_waveshare_epaper_gdew042t2: uc8176@0 {
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compatible = "gooddisplay,gdew042t2", "ultrachip,uc8176";
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mipi-max-frequency = <4000000>;
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reg = <0>;
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width = <400>;
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height = <300>;
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busy-gpios = <&arduino_header 13 GPIO_ACTIVE_LOW>; /* D7 */
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full {
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pwr = [03 00 26 26 09];
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cdi = <0xd7>;
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tcon = <0x22>;
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softstart = [17 17 17];
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full {
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pwr = [03 00 26 26 09];
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cdi = <0xd7>;
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tcon = <0x22>;
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};
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};
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};
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};
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@ -10,25 +10,31 @@
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chosen {
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zephyr,display = &uc8179_waveshare_epaper_gdew075t7;
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};
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};
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&arduino_spi {
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uc8179_waveshare_epaper_gdew075t7: uc8179@0 {
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compatible = "gooddisplay,gdew075t7", "ultrachip,uc8179";
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spi-max-frequency = <4000000>;
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reg = <0>;
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width = <800>;
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height = <480>;
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dc-gpios = <&arduino_header 15 GPIO_ACTIVE_LOW>; /* D9 */
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mipi_dbi_waveshare_epaper_gdew075t7 {
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compatible = "zephyr,mipi-dbi-spi";
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spi-dev = <&arduino_spi>;
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dc-gpios = <&arduino_header 15 GPIO_ACTIVE_HIGH>; /* D9 */
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reset-gpios = <&arduino_header 14 GPIO_ACTIVE_LOW>; /* D8 */
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busy-gpios = <&arduino_header 13 GPIO_ACTIVE_LOW>; /* D7 */
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write-only;
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#address-cells = <1>;
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#size-cells = <0>;
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softstart = [17 17 17 17];
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uc8179_waveshare_epaper_gdew075t7: uc8179@0 {
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compatible = "gooddisplay,gdew075t7", "ultrachip,uc8179";
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mipi-max-frequency = <4000000>;
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reg = <0>;
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width = <800>;
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height = <480>;
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busy-gpios = <&arduino_header 13 GPIO_ACTIVE_LOW>; /* D7 */
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full {
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pwr = [07 07 3f 3f];
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cdi = <07>;
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tcon = <0x22>;
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softstart = [17 17 17 17];
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full {
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pwr = [07 07 3f 3f];
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cdi = <07>;
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tcon = <0x22>;
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};
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};
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};
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};
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@ -7,6 +7,6 @@ config UC81XX
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bool "UltraChip UC81xx compatible display controller driver"
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default y
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depends on DT_HAS_ULTRACHIP_UC8175_ENABLED || DT_HAS_ULTRACHIP_UC8176_ENABLED || DT_HAS_ULTRACHIP_UC8179_ENABLED
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select SPI
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select MIPI_DBI
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help
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Enable driver for UC81xx compatible controller.
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@ -1,6 +1,7 @@
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/*
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* Copyright (c) 2022 Andreas Sandberg
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* Copyright (c) 2020 PHYTEC Messtechnik GmbH
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* Copyright 2024 NXP
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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@ -10,7 +11,7 @@
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#include <zephyr/init.h>
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#include <zephyr/drivers/display.h>
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#include <zephyr/drivers/gpio.h>
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#include <zephyr/drivers/spi.h>
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#include <zephyr/drivers/mipi_dbi.h>
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#include <zephyr/sys/byteorder.h>
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#include "uc81xx_regs.h"
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@ -75,10 +76,9 @@ struct uc81xx_quirks {
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struct uc81xx_config {
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const struct uc81xx_quirks *quirks;
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struct spi_dt_spec bus;
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struct gpio_dt_spec dc_gpio;
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const struct device *mipi_dev;
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const struct mipi_dbi_config dbi_config;
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struct gpio_dt_spec busy_gpio;
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struct gpio_dt_spec reset_gpio;
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uint16_t height;
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uint16_t width;
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@ -110,39 +110,13 @@ static inline int uc81xx_write_cmd(const struct device *dev, uint8_t cmd,
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const uint8_t *data, size_t len)
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{
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const struct uc81xx_config *config = dev->config;
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struct spi_buf buf = {.buf = &cmd, .len = sizeof(cmd)};
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struct spi_buf_set buf_set = {.buffers = &buf, .count = 1};
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int err;
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uc81xx_busy_wait(dev);
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err = gpio_pin_set_dt(&config->dc_gpio, 1);
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if (err < 0) {
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return err;
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}
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err = spi_write_dt(&config->bus, &buf_set);
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if (err < 0) {
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goto spi_out;
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}
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if (data != NULL) {
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buf.buf = (void *)data;
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buf.len = len;
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err = gpio_pin_set_dt(&config->dc_gpio, 0);
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if (err < 0) {
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goto spi_out;
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}
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err = spi_write_dt(&config->bus, &buf_set);
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if (err < 0) {
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goto spi_out;
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}
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}
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spi_out:
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spi_release_dt(&config->bus);
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err = mipi_dbi_command_write(config->mipi_dev, &config->dbi_config,
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cmd, data, len);
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mipi_dbi_release(config->mipi_dev, &config->dbi_config);
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return err;
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}
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@ -151,43 +125,42 @@ static inline int uc81xx_write_cmd_pattern(const struct device *dev,
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uint8_t pattern, size_t len)
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{
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const struct uc81xx_config *config = dev->config;
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struct spi_buf buf = {.buf = &cmd, .len = sizeof(cmd)};
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struct spi_buf_set buf_set = {.buffers = &buf, .count = 1};
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struct display_buffer_descriptor mipi_desc;
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int err;
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uint8_t data[64];
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uc81xx_busy_wait(dev);
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err = gpio_pin_set_dt(&config->dc_gpio, 1);
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err = mipi_dbi_command_write(config->mipi_dev, &config->dbi_config,
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cmd, NULL, 0);
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if (err < 0) {
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return err;
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}
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err = spi_write_dt(&config->bus, &buf_set);
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if (err < 0) {
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goto spi_out;
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}
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err = gpio_pin_set_dt(&config->dc_gpio, 0);
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if (err < 0) {
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goto spi_out;
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}
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/*
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* MIPI display write API requires a display buffer descriptor.
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* Create one that describes the buffer we are writing
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*/
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mipi_desc.height = 1;
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memset(data, pattern, sizeof(data));
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while (len) {
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buf.buf = data;
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buf.len = MIN(len, sizeof(data));
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mipi_desc.buf_size = mipi_desc.width = mipi_desc.pitch =
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MIN(len, sizeof(data));
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err = spi_write_dt(&config->bus, &buf_set);
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err = mipi_dbi_write_display(config->mipi_dev,
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&config->dbi_config,
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data, &mipi_desc,
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PIXEL_FORMAT_MONO10);
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if (err < 0) {
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goto spi_out;
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goto out;
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}
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len -= buf.len;
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len -= mipi_desc.buf_size;
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}
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spi_out:
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spi_release_dt(&config->bus);
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out:
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mipi_dbi_release(config->mipi_dev, &config->dbi_config);
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return err;
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}
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@ -544,9 +517,7 @@ static int uc81xx_controller_init(const struct device *dev)
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const struct uc81xx_config *config = dev->config;
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struct uc81xx_data *data = dev->data;
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gpio_pin_set_dt(&config->reset_gpio, 1);
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k_sleep(K_MSEC(UC81XX_RESET_DELAY));
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gpio_pin_set_dt(&config->reset_gpio, 0);
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mipi_dbi_reset(config->mipi_dev, UC81XX_RESET_DELAY);
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k_sleep(K_MSEC(UC81XX_RESET_DELAY));
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uc81xx_busy_wait(dev);
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@ -570,26 +541,11 @@ static int uc81xx_init(const struct device *dev)
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LOG_DBG("");
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if (!spi_is_ready_dt(&config->bus)) {
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LOG_ERR("SPI bus %s not ready", config->bus.bus->name);
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if (!device_is_ready(config->mipi_dev)) {
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LOG_ERR("MIPI device not ready");
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return -ENODEV;
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}
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if (!gpio_is_ready_dt(&config->reset_gpio)) {
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LOG_ERR("Reset GPIO device not ready");
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return -ENODEV;
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}
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gpio_pin_configure_dt(&config->reset_gpio, GPIO_OUTPUT_INACTIVE);
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if (!gpio_is_ready_dt(&config->dc_gpio)) {
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LOG_ERR("DC GPIO device not ready");
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return -ENODEV;
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}
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gpio_pin_configure_dt(&config->dc_gpio, GPIO_OUTPUT_INACTIVE);
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if (!gpio_is_ready_dt(&config->busy_gpio)) {
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LOG_ERR("Busy GPIO device not ready");
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return -ENODEV;
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@ -816,12 +772,14 @@ static const struct display_driver_api uc81xx_driver_api = {
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\
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static const struct uc81xx_config uc81xx_cfg_ ## n = { \
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.quirks = quirks_ptr, \
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.bus = SPI_DT_SPEC_GET(n, \
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SPI_OP_MODE_MASTER | SPI_WORD_SET(8) | \
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SPI_LOCK_ON, \
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0), \
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.reset_gpio = GPIO_DT_SPEC_GET(n, reset_gpios), \
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.dc_gpio = GPIO_DT_SPEC_GET(n, dc_gpios), \
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.mipi_dev = DEVICE_DT_GET(DT_PARENT(n)), \
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.dbi_config = { \
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.mode = MIPI_DBI_MODE_SPI_4WIRE, \
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.config = MIPI_DBI_SPI_CONFIG_DT(n, \
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SPI_OP_MODE_MASTER | \
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SPI_LOCK_ON | SPI_WORD_SET(8), \
|
||||
0), \
|
||||
}, \
|
||||
.busy_gpio = GPIO_DT_SPEC_GET(n, busy_gpios), \
|
||||
\
|
||||
.height = DT_PROP(n, height), \
|
||||
|
|
|
|||
|
|
@ -1,30 +1,13 @@
|
|||
# Copyright (c) 2022 Andreas Sandberg
|
||||
# Copyright (c) 2020, Phytec Messtechnik GmbH
|
||||
# Copyright 2024 NXP
|
||||
# SPDX-License-Identifier: Apache-2.0
|
||||
|
||||
description: UltraChip UC81xx EPD display controller common properties
|
||||
|
||||
include: [spi-device.yaml, display-controller.yaml]
|
||||
include: [mipi-dbi-spi-device.yaml, display-controller.yaml]
|
||||
|
||||
properties:
|
||||
reset-gpios:
|
||||
type: phandle-array
|
||||
required: true
|
||||
description: RESET pin.
|
||||
|
||||
The RESET pin of UC81xx is active low.
|
||||
If connected directly the MCU pin should be configured
|
||||
as active low.
|
||||
|
||||
dc-gpios:
|
||||
type: phandle-array
|
||||
required: true
|
||||
description: DC pin.
|
||||
|
||||
The DC pin of UC81xx is active low (transmission command byte).
|
||||
If connected directly the MCU pin should be configured
|
||||
as active low.
|
||||
|
||||
busy-gpios:
|
||||
type: phandle-array
|
||||
required: true
|
||||
|
|
|
|||
Loading…
Reference in a new issue