1783de57cSGreg Kroah-Hartman // SPDX-License-Identifier: GPL-2.0+
25dc5e4fbSThomas Petazzoni /*
35dc5e4fbSThomas Petazzoni * FB driver for the SSD1289 LCD Controller
45dc5e4fbSThomas Petazzoni *
55dc5e4fbSThomas Petazzoni * Copyright (C) 2013 Noralf Tronnes
65dc5e4fbSThomas Petazzoni *
75dc5e4fbSThomas Petazzoni * Init sequence taken from ITDB02_Graph16.cpp - (C)2010-2011 Henning Karlsen
85dc5e4fbSThomas Petazzoni */
95dc5e4fbSThomas Petazzoni
105dc5e4fbSThomas Petazzoni #include <linux/module.h>
115dc5e4fbSThomas Petazzoni #include <linux/kernel.h>
125dc5e4fbSThomas Petazzoni #include <linux/init.h>
135dc5e4fbSThomas Petazzoni
145dc5e4fbSThomas Petazzoni #include "fbtft.h"
155dc5e4fbSThomas Petazzoni
165dc5e4fbSThomas Petazzoni #define DRVNAME "fb_ssd1289"
175dc5e4fbSThomas Petazzoni #define WIDTH 240
185dc5e4fbSThomas Petazzoni #define HEIGHT 320
195dc5e4fbSThomas Petazzoni #define DEFAULT_GAMMA "02 03 2 5 7 7 4 2 4 2\n" \
205dc5e4fbSThomas Petazzoni "02 03 2 5 7 5 4 2 4 2"
215dc5e4fbSThomas Petazzoni
221c41494aSMing Yang static unsigned int reg11 = 0x6040;
23ced04842SAbdul Rauf module_param(reg11, uint, 0000);
245dc5e4fbSThomas Petazzoni MODULE_PARM_DESC(reg11, "Register 11h value");
255dc5e4fbSThomas Petazzoni
init_display(struct fbtft_par * par)265dc5e4fbSThomas Petazzoni static int init_display(struct fbtft_par *par)
275dc5e4fbSThomas Petazzoni {
285dc5e4fbSThomas Petazzoni par->fbtftops.reset(par);
295dc5e4fbSThomas Petazzoni
305dc5e4fbSThomas Petazzoni write_reg(par, 0x00, 0x0001);
315dc5e4fbSThomas Petazzoni write_reg(par, 0x03, 0xA8A4);
325dc5e4fbSThomas Petazzoni write_reg(par, 0x0C, 0x0000);
335dc5e4fbSThomas Petazzoni write_reg(par, 0x0D, 0x080C);
345dc5e4fbSThomas Petazzoni write_reg(par, 0x0E, 0x2B00);
355dc5e4fbSThomas Petazzoni write_reg(par, 0x1E, 0x00B7);
365dc5e4fbSThomas Petazzoni write_reg(par, 0x01,
3712eed2f2SArushi Singhal BIT(13) | (par->bgr << 11) | BIT(9) | (HEIGHT - 1));
385dc5e4fbSThomas Petazzoni write_reg(par, 0x02, 0x0600);
395dc5e4fbSThomas Petazzoni write_reg(par, 0x10, 0x0000);
405dc5e4fbSThomas Petazzoni write_reg(par, 0x05, 0x0000);
415dc5e4fbSThomas Petazzoni write_reg(par, 0x06, 0x0000);
425dc5e4fbSThomas Petazzoni write_reg(par, 0x16, 0xEF1C);
435dc5e4fbSThomas Petazzoni write_reg(par, 0x17, 0x0003);
445dc5e4fbSThomas Petazzoni write_reg(par, 0x07, 0x0233);
455dc5e4fbSThomas Petazzoni write_reg(par, 0x0B, 0x0000);
465dc5e4fbSThomas Petazzoni write_reg(par, 0x0F, 0x0000);
475dc5e4fbSThomas Petazzoni write_reg(par, 0x41, 0x0000);
485dc5e4fbSThomas Petazzoni write_reg(par, 0x42, 0x0000);
495dc5e4fbSThomas Petazzoni write_reg(par, 0x48, 0x0000);
505dc5e4fbSThomas Petazzoni write_reg(par, 0x49, 0x013F);
515dc5e4fbSThomas Petazzoni write_reg(par, 0x4A, 0x0000);
525dc5e4fbSThomas Petazzoni write_reg(par, 0x4B, 0x0000);
535dc5e4fbSThomas Petazzoni write_reg(par, 0x44, 0xEF00);
545dc5e4fbSThomas Petazzoni write_reg(par, 0x45, 0x0000);
555dc5e4fbSThomas Petazzoni write_reg(par, 0x46, 0x013F);
565dc5e4fbSThomas Petazzoni write_reg(par, 0x23, 0x0000);
575dc5e4fbSThomas Petazzoni write_reg(par, 0x24, 0x0000);
585dc5e4fbSThomas Petazzoni write_reg(par, 0x25, 0x8000);
595dc5e4fbSThomas Petazzoni write_reg(par, 0x4f, 0x0000);
605dc5e4fbSThomas Petazzoni write_reg(par, 0x4e, 0x0000);
615dc5e4fbSThomas Petazzoni write_reg(par, 0x22);
625dc5e4fbSThomas Petazzoni return 0;
635dc5e4fbSThomas Petazzoni }
645dc5e4fbSThomas Petazzoni
set_addr_win(struct fbtft_par * par,int xs,int ys,int xe,int ye)655dc5e4fbSThomas Petazzoni static void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye)
665dc5e4fbSThomas Petazzoni {
675dc5e4fbSThomas Petazzoni switch (par->info->var.rotate) {
685dc5e4fbSThomas Petazzoni /* R4Eh - Set GDDRAM X address counter */
695dc5e4fbSThomas Petazzoni /* R4Fh - Set GDDRAM Y address counter */
705dc5e4fbSThomas Petazzoni case 0:
715dc5e4fbSThomas Petazzoni write_reg(par, 0x4e, xs);
725dc5e4fbSThomas Petazzoni write_reg(par, 0x4f, ys);
735dc5e4fbSThomas Petazzoni break;
745dc5e4fbSThomas Petazzoni case 180:
755dc5e4fbSThomas Petazzoni write_reg(par, 0x4e, par->info->var.xres - 1 - xs);
765dc5e4fbSThomas Petazzoni write_reg(par, 0x4f, par->info->var.yres - 1 - ys);
775dc5e4fbSThomas Petazzoni break;
785dc5e4fbSThomas Petazzoni case 270:
795dc5e4fbSThomas Petazzoni write_reg(par, 0x4e, par->info->var.yres - 1 - ys);
805dc5e4fbSThomas Petazzoni write_reg(par, 0x4f, xs);
815dc5e4fbSThomas Petazzoni break;
825dc5e4fbSThomas Petazzoni case 90:
835dc5e4fbSThomas Petazzoni write_reg(par, 0x4e, ys);
845dc5e4fbSThomas Petazzoni write_reg(par, 0x4f, par->info->var.xres - 1 - xs);
855dc5e4fbSThomas Petazzoni break;
865dc5e4fbSThomas Petazzoni }
875dc5e4fbSThomas Petazzoni
885dc5e4fbSThomas Petazzoni /* R22h - RAM data write */
895dc5e4fbSThomas Petazzoni write_reg(par, 0x22);
905dc5e4fbSThomas Petazzoni }
915dc5e4fbSThomas Petazzoni
set_var(struct fbtft_par * par)925dc5e4fbSThomas Petazzoni static int set_var(struct fbtft_par *par)
935dc5e4fbSThomas Petazzoni {
945dc5e4fbSThomas Petazzoni if (par->fbtftops.init_display != init_display) {
955dc5e4fbSThomas Petazzoni /* don't risk messing up register 11h */
965dc5e4fbSThomas Petazzoni fbtft_par_dbg(DEBUG_INIT_DISPLAY, par,
975dc5e4fbSThomas Petazzoni "%s: skipping since custom init_display() is used\n",
985dc5e4fbSThomas Petazzoni __func__);
995dc5e4fbSThomas Petazzoni return 0;
1005dc5e4fbSThomas Petazzoni }
1015dc5e4fbSThomas Petazzoni
1025dc5e4fbSThomas Petazzoni switch (par->info->var.rotate) {
1035dc5e4fbSThomas Petazzoni case 0:
104153fe946SGeert Uytterhoeven write_reg(par, 0x11, reg11 | 0x30);
1055dc5e4fbSThomas Petazzoni break;
1065dc5e4fbSThomas Petazzoni case 270:
107153fe946SGeert Uytterhoeven write_reg(par, 0x11, reg11 | 0x28);
1085dc5e4fbSThomas Petazzoni break;
1095dc5e4fbSThomas Petazzoni case 180:
110153fe946SGeert Uytterhoeven write_reg(par, 0x11, reg11 | 0x00);
1115dc5e4fbSThomas Petazzoni break;
1125dc5e4fbSThomas Petazzoni case 90:
113153fe946SGeert Uytterhoeven write_reg(par, 0x11, reg11 | 0x18);
1145dc5e4fbSThomas Petazzoni break;
1155dc5e4fbSThomas Petazzoni }
1165dc5e4fbSThomas Petazzoni
1175dc5e4fbSThomas Petazzoni return 0;
1185dc5e4fbSThomas Petazzoni }
1195dc5e4fbSThomas Petazzoni
1205dc5e4fbSThomas Petazzoni /*
121b2a8bb77SAnson Jacob * Gamma string format:
122b2a8bb77SAnson Jacob * VRP0 VRP1 PRP0 PRP1 PKP0 PKP1 PKP2 PKP3 PKP4 PKP5
123b2a8bb77SAnson Jacob * VRN0 VRN1 PRN0 PRN1 PKN0 PKN1 PKN2 PKN3 PKN4 PKN5
1245dc5e4fbSThomas Petazzoni */
1250b1533c6SLeonardo Brás #define CURVE(num, idx) curves[(num) * par->gamma.num_values + (idx)]
set_gamma(struct fbtft_par * par,u32 * curves)12622eb36b8SArnd Bergmann static int set_gamma(struct fbtft_par *par, u32 *curves)
1275dc5e4fbSThomas Petazzoni {
128*5817eca0SColin Ian King static const unsigned long mask[] = {
129153fe946SGeert Uytterhoeven 0x1f, 0x1f, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07,
130153fe946SGeert Uytterhoeven 0x1f, 0x1f, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07,
131153fe946SGeert Uytterhoeven };
1325dc5e4fbSThomas Petazzoni int i, j;
1335dc5e4fbSThomas Petazzoni
1345dc5e4fbSThomas Petazzoni /* apply mask */
1355dc5e4fbSThomas Petazzoni for (i = 0; i < 2; i++)
1365dc5e4fbSThomas Petazzoni for (j = 0; j < 10; j++)
1375dc5e4fbSThomas Petazzoni CURVE(i, j) &= mask[i * par->gamma.num_values + j];
1385dc5e4fbSThomas Petazzoni
1395dc5e4fbSThomas Petazzoni write_reg(par, 0x0030, CURVE(0, 5) << 8 | CURVE(0, 4));
1405dc5e4fbSThomas Petazzoni write_reg(par, 0x0031, CURVE(0, 7) << 8 | CURVE(0, 6));
1415dc5e4fbSThomas Petazzoni write_reg(par, 0x0032, CURVE(0, 9) << 8 | CURVE(0, 8));
1425dc5e4fbSThomas Petazzoni write_reg(par, 0x0033, CURVE(0, 3) << 8 | CURVE(0, 2));
1435dc5e4fbSThomas Petazzoni write_reg(par, 0x0034, CURVE(1, 5) << 8 | CURVE(1, 4));
1445dc5e4fbSThomas Petazzoni write_reg(par, 0x0035, CURVE(1, 7) << 8 | CURVE(1, 6));
1455dc5e4fbSThomas Petazzoni write_reg(par, 0x0036, CURVE(1, 9) << 8 | CURVE(1, 8));
1465dc5e4fbSThomas Petazzoni write_reg(par, 0x0037, CURVE(1, 3) << 8 | CURVE(1, 2));
1475dc5e4fbSThomas Petazzoni write_reg(par, 0x003A, CURVE(0, 1) << 8 | CURVE(0, 0));
1485dc5e4fbSThomas Petazzoni write_reg(par, 0x003B, CURVE(1, 1) << 8 | CURVE(1, 0));
1495dc5e4fbSThomas Petazzoni
1505dc5e4fbSThomas Petazzoni return 0;
1515dc5e4fbSThomas Petazzoni }
152c21cbb5eSLeonardo Brás
1535dc5e4fbSThomas Petazzoni #undef CURVE
1545dc5e4fbSThomas Petazzoni
1555dc5e4fbSThomas Petazzoni static struct fbtft_display display = {
1565dc5e4fbSThomas Petazzoni .regwidth = 16,
1575dc5e4fbSThomas Petazzoni .width = WIDTH,
1585dc5e4fbSThomas Petazzoni .height = HEIGHT,
1595dc5e4fbSThomas Petazzoni .gamma_num = 2,
1605dc5e4fbSThomas Petazzoni .gamma_len = 10,
1615dc5e4fbSThomas Petazzoni .gamma = DEFAULT_GAMMA,
1625dc5e4fbSThomas Petazzoni .fbtftops = {
1635dc5e4fbSThomas Petazzoni .init_display = init_display,
1645dc5e4fbSThomas Petazzoni .set_addr_win = set_addr_win,
1655dc5e4fbSThomas Petazzoni .set_var = set_var,
1665dc5e4fbSThomas Petazzoni .set_gamma = set_gamma,
1675dc5e4fbSThomas Petazzoni },
1685dc5e4fbSThomas Petazzoni };
1691014c2ceSAnish Bhatt
1705dc5e4fbSThomas Petazzoni FBTFT_REGISTER_DRIVER(DRVNAME, "solomon,ssd1289", &display);
1715dc5e4fbSThomas Petazzoni
1725dc5e4fbSThomas Petazzoni MODULE_ALIAS("spi:" DRVNAME);
1735dc5e4fbSThomas Petazzoni MODULE_ALIAS("platform:" DRVNAME);
1745dc5e4fbSThomas Petazzoni MODULE_ALIAS("spi:ssd1289");
1755dc5e4fbSThomas Petazzoni MODULE_ALIAS("platform:ssd1289");
1765dc5e4fbSThomas Petazzoni
1775dc5e4fbSThomas Petazzoni MODULE_DESCRIPTION("FB driver for the SSD1289 LCD Controller");
1785dc5e4fbSThomas Petazzoni MODULE_AUTHOR("Noralf Tronnes");
1795dc5e4fbSThomas Petazzoni MODULE_LICENSE("GPL");
180