rk3328点spi-oled屏(单色OLED)

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介绍：spi-单色oled IC=sh1106 分辨率128x64

1:DTS

&spi0{status = "okay";//max-freq = <1200000>;//dma-name = "tx","rx";  //enable dmapinctrl-names = "default";pinctrl-0 = <&spi0m2_clk &spi0m2_cs0 &spi0m2_tx &spi0m2_rx>;st7789v@0 {status = "disabled"; //status = "okay";compatible = "sitronix,st7789v";reg = <0>;spi-max-frequency = <32000000>;           bgr;fps = <30>;rotate = <90>;buswidth = <8>; dc-gpios = <&gpio3 RK_PA5 GPIO_ACTIVE_HIGH>;  /* gpio3 A5 */reset-gpios = <&gpio3 RK_PA4 GPIO_ACTIVE_LOW>; /* gpio3 A6 */led-gpios = <&gpio3 RK_PA6 GPIO_ACTIVE_LOW>;  /* gpio3 A4 */ //注意背光io集性          debug = <0>; //等级0～7 越高信息越多};sh1106@0 {status = "okay";compatible = "sinowealth,sh1106";reg = <0>;	spi-max-frequency = <12000000>;           bgr;fps = <30>;//rotate = <90>;buswidth = <8>; dc-gpios = <&gpio3 RK_PA5 GPIO_ACTIVE_HIGH>;  /* gpio3 A5 */reset-gpios = <&gpio3 RK_PA4 GPIO_ACTIVE_LOW>; /* gpio3 A6 */led-gpios = <&gpio3 RK_PA6 GPIO_ACTIVE_LOW>;  /* gpio3 A4 */ //注意背光io集性          debug = <0>; //等级0～7 越高信息越多}; };

2:C-code linux自带没有动

// SPDX-License-Identifier: GPL-2.0+
/** FB driver for the SH1106 OLED Controller* Based on the SSD1306 driver by Noralf Tronnes** Copyright (C) 2017 Heiner Kallweit*/#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/gpio/consumer.h>
#include <linux/delay.h>#include "fbtft.h"#define DRVNAME		"fb_sh1106"
#define WIDTH		128
#define HEIGHT		64/* Init sequence based on the Adafruit SSD1306 Arduino library */
static int init_display(struct fbtft_par *par)
{if (!par->info->var.xres || par->info->var.xres > WIDTH ||!par->info->var.yres || par->info->var.yres > HEIGHT ||par->info->var.yres % 8) {dev_err(par->info->device, "Invalid screen size\n");return -EINVAL;}if (par->info->var.rotate) {dev_err(par->info->device, "Display rotation not supported\n");return -EINVAL;}par->fbtftops.reset(par);/* Set Display OFF */write_reg(par, 0xAE);/* Set Display Clock Divide Ratio/ Oscillator Frequency */write_reg(par, 0xD5, 0x80);/* Set Multiplex Ratio */write_reg(par, 0xA8, par->info->var.yres - 1);/* Set Display Offset */write_reg(par, 0xD3, 0x00);/* Set Display Start Line */write_reg(par, 0x40 | 0x0);/* Set Segment Re-map *//* column address 127 is mapped to SEG0 */write_reg(par, 0xA0 | 0x1);/* Set COM Output Scan Direction *//* remapped mode. Scan from COM[N-1] to COM0 */write_reg(par, 0xC8);/* Set COM Pins Hardware Configuration */if (par->info->var.yres == 64)/* A[4]=1b, Alternative COM pin configuration */write_reg(par, 0xDA, 0x12);else if (par->info->var.yres == 48)/* A[4]=1b, Alternative COM pin configuration */write_reg(par, 0xDA, 0x12);else/* A[4]=0b, Sequential COM pin configuration */write_reg(par, 0xDA, 0x02);/* Set Pre-charge Period */write_reg(par, 0xD9, 0xF1);/* Set VCOMH Deselect Level */write_reg(par, 0xDB, 0x40);/* Set Display ON */write_reg(par, 0xAF);msleep(150);return 0;
}static void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye)
{
}static int blank(struct fbtft_par *par, bool on)
{fbtft_par_dbg(DEBUG_BLANK, par, "(%s=%s)\n",__func__, on ? "true" : "false");write_reg(par, on ? 0xAE : 0xAF);return 0;
}/* Gamma is used to control Contrast */
static int set_gamma(struct fbtft_par *par, u32 *curves)
{/* apply mask */curves[0] &= 0xFF;/* Set Contrast Control for BANK0 */write_reg(par, 0x81, curves[0]);return 0;
}static int write_vmem(struct fbtft_par *par, size_t offset, size_t len)
{u16 *vmem16 = (u16 *)par->info->screen_buffer;u32 xres = par->info->var.xres;int page, page_start, page_end, x, i, ret;u8 *buf = par->txbuf.buf;/* offset refers to vmem with 2 bytes element size */page_start = offset / (8 * 2 * xres);page_end = DIV_ROUND_UP(offset + len, 8 * 2 * xres);for (page = page_start; page < page_end; page++) {/* set page and set column to 2 because of vidmem width 132 */write_reg(par, 0xb0 | page, 0x00 | 2, 0x10 | 0);memset(buf, 0, xres);for (x = 0; x < xres; x++)for (i = 0; i < 8; i++)if (vmem16[(page * 8 + i) * xres + x])buf[x] |= BIT(i);/* Write data */ret = fbtft_write_buf_dc(par, buf, xres, 1);if (ret < 0)return ret;}return 0;
}static void write_register(struct fbtft_par *par, int len, ...)
{va_list args;int i;va_start(args, len);for (i = 0; i < len; i++)par->buf[i] = va_arg(args, unsigned int);/* keep DC low for all command bytes to transfer */fbtft_write_buf_dc(par, par->buf, len, 0);va_end(args);
}static struct fbtft_display display = {.regwidth = 8,.width = WIDTH,.height = HEIGHT,.txbuflen = WIDTH,.gamma_num = 1,.gamma_len = 1,/* set default contrast to 0xcd = 80% */.gamma = "cd",.fbtftops = {.write_vmem = write_vmem,.write_register = write_register,.init_display = init_display,.set_addr_win = set_addr_win,.blank = blank,.set_gamma = set_gamma,},
};FBTFT_REGISTER_DRIVER(DRVNAME, "sinowealth,sh1106", &display);MODULE_ALIAS("spi:" DRVNAME);
MODULE_ALIAS("platform:" DRVNAME);
MODULE_ALIAS("spi:sh1106");
MODULE_ALIAS("platform:sh1106");MODULE_DESCRIPTION("SH1106 OLED Driver");
MODULE_AUTHOR("Heiner Kallweit");
MODULE_LICENSE("GPL");

sh1106加载OK