--- /dev/null
+/*
+ * FB driver for the ILI9163 LCD Controller
+ *
+ * Copyright (C) 2015 Kozhevnikov Anatoly
+ *
+ * Based on ili9325.c by Noralf Tronnes and
+ * .S.U.M.O.T.O.Y. by Max MC Costa (https://github.com/sumotoy/TFT_ILI9163C).
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/gpio.h>
+#include <linux/delay.h>
+
+#include "fbtft.h"
+
+#define DRVNAME "fb_ili9163"
+#define WIDTH 128
+#define HEIGHT 128
+#define BPP 16
+#define FPS 30
+
+#ifdef GAMMA_ADJ
+#define GAMMA_LEN 15
+#define GAMMA_NUM 1
+#define DEFAULT_GAMMA "36 29 12 22 1C 15 42 B7 2F 13 12 0A 11 0B 06\n"
+#endif
+
+/* ILI9163C commands */
+#define CMD_NOP 0x00 /* Non operation*/
+#define CMD_SWRESET 0x01 /* Soft Reset */
+#define CMD_SLPIN 0x10 /* Sleep ON */
+#define CMD_SLPOUT 0x11 /* Sleep OFF */
+#define CMD_PTLON 0x12 /* Partial Mode ON */
+#define CMD_NORML 0x13 /* Normal Display ON */
+#define CMD_DINVOF 0x20 /* Display Inversion OFF */
+#define CMD_DINVON 0x21 /* Display Inversion ON */
+#define CMD_GAMMASET 0x26 /* Gamma Set (0x01[1],0x02[2],0x04[3],0x08[4]) */
+#define CMD_DISPOFF 0x28 /* Display OFF */
+#define CMD_DISPON 0x29 /* Display ON */
+#define CMD_IDLEON 0x39 /* Idle Mode ON */
+#define CMD_IDLEOF 0x38 /* Idle Mode OFF */
+#define CMD_CLMADRS 0x2A /* Column Address Set */
+#define CMD_PGEADRS 0x2B /* Page Address Set */
+
+#define CMD_RAMWR 0x2C /* Memory Write */
+#define CMD_RAMRD 0x2E /* Memory Read */
+#define CMD_CLRSPACE 0x2D /* Color Space : 4K/65K/262K */
+#define CMD_PARTAREA 0x30 /* Partial Area */
+#define CMD_VSCLLDEF 0x33 /* Vertical Scroll Definition */
+#define CMD_TEFXLON 0x34 /* Tearing Effect Line ON */
+#define CMD_TEFXLOF 0x35 /* Tearing Effect Line OFF */
+#define CMD_MADCTL 0x36 /* Memory Access Control */
+
+#define CMD_PIXFMT 0x3A /* Interface Pixel Format */
+#define CMD_FRMCTR1 0xB1 /* Frame Rate Control
+ (In normal mode/Full colors) */
+#define CMD_FRMCTR2 0xB2 /* Frame Rate Control (In Idle mode/8-colors) */
+#define CMD_FRMCTR3 0xB3 /* Frame Rate Control
+ (In Partial mode/full colors) */
+#define CMD_DINVCTR 0xB4 /* Display Inversion Control */
+#define CMD_RGBBLK 0xB5 /* RGB Interface Blanking Porch setting */
+#define CMD_DFUNCTR 0xB6 /* Display Function set 5 */
+#define CMD_SDRVDIR 0xB7 /* Source Driver Direction Control */
+#define CMD_GDRVDIR 0xB8 /* Gate Driver Direction Control */
+
+#define CMD_PWCTR1 0xC0 /* Power_Control1 */
+#define CMD_PWCTR2 0xC1 /* Power_Control2 */
+#define CMD_PWCTR3 0xC2 /* Power_Control3 */
+#define CMD_PWCTR4 0xC3 /* Power_Control4 */
+#define CMD_PWCTR5 0xC4 /* Power_Control5 */
+#define CMD_VCOMCTR1 0xC5 /* VCOM_Control 1 */
+#define CMD_VCOMCTR2 0xC6 /* VCOM_Control 2 */
+#define CMD_VCOMOFFS 0xC7 /* VCOM Offset Control */
+#define CMD_PGAMMAC 0xE0 /* Positive Gamma Correction Setting */
+#define CMD_NGAMMAC 0xE1 /* Negative Gamma Correction Setting */
+#define CMD_GAMRSEL 0xF2 /* GAM_R_SEL */
+
+/*
+This display:
+http://www.ebay.com/itm/Replace-Nokia-5110-LCD-1-44-Red-Serial-128X128-SPI-Color-TFT-LCD-Display-Module-/271422122271
+This particular display has a design error! The controller has 3 pins to
+configure to constrain the memory and resolution to a fixed dimension (in
+that case 128x128) but they leaved those pins configured for 128x160 so
+there was several pixel memory addressing problems.
+I solved by setup several parameters that dinamically fix the resolution as
+needit so below the parameters for this display. If you have a strain or a
+correct display (can happen with chinese) you can copy those parameters and
+create setup for different displays.
+*/
+
+#ifdef RED
+#define __OFFSET 32 /*see note 2 - this is the red version */
+#else
+#define __OFFSET 0 /*see note 2 - this is the black version */
+#endif
+
+static int init_display(struct fbtft_par *par)
+{
+ fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+ par->fbtftops.reset(par);
+
+ if (par->gpio.cs != -1)
+ gpio_set_value(par->gpio.cs, 0); /* Activate chip */
+
+ write_reg(par, CMD_SWRESET); /* software reset */
+ mdelay(500);
+ write_reg(par, CMD_SLPOUT); /* exit sleep */
+ mdelay(5);
+ write_reg(par, CMD_PIXFMT, 0x05); /* Set Color Format 16bit */
+ write_reg(par, CMD_GAMMASET, 0x02); /* default gamma curve 3 */
+#ifdef GAMMA_ADJ
+ write_reg(par, CMD_GAMRSEL, 0x01); /* Enable Gamma adj */
+#endif
+ write_reg(par, CMD_NORML);
+ write_reg(par, CMD_DFUNCTR, 0xff, 0x06);
+ /* Frame Rate Control (In normal mode/Full colors) */
+ write_reg(par, CMD_FRMCTR1, 0x08, 0x02);
+ write_reg(par, CMD_DINVCTR, 0x07); /* display inversion */
+ /* Set VRH1[4:0] & VC[2:0] for VCI1 & GVDD */
+ write_reg(par, CMD_PWCTR1, 0x0A, 0x02);
+ /* Set BT[2:0] for AVDD & VCL & VGH & VGL */
+ write_reg(par, CMD_PWCTR2, 0x02);
+ /* Set VMH[6:0] & VML[6:0] for VOMH & VCOML */
+ write_reg(par, CMD_VCOMCTR1, 0x50, 0x63);
+ write_reg(par, CMD_VCOMOFFS, 0);
+
+ write_reg(par, CMD_CLMADRS, 0, 0, 0, WIDTH); /* Set Column Address */
+ write_reg(par, CMD_PGEADRS, 0, 0, 0, HEIGHT); /* Set Page Address */
+
+ write_reg(par, CMD_DISPON); /* display ON */
+ write_reg(par, CMD_RAMWR); /* Memory Write */
+
+ return 0;
+}
+
+static void set_addr_win(struct fbtft_par *par, int xs, int ys,
+ int xe, int ye)
+{
+ fbtft_par_dbg(DEBUG_SET_ADDR_WIN, par,
+ "%s(xs=%d, ys=%d, xe=%d, ye=%d)\n", __func__, xs, ys, xe, ye);
+
+ switch (par->info->var.rotate) {
+ case 0:
+ write_reg(par, CMD_CLMADRS, xs >> 8, xs & 0xff, xe >> 8,
+ xe & 0xff);
+ write_reg(par, CMD_PGEADRS,
+ (ys + __OFFSET) >> 8, (ys + __OFFSET) & 0xff,
+ (ye + __OFFSET) >> 8, (ye + __OFFSET) & 0xff);
+ break;
+ case 90:
+ write_reg(par, CMD_CLMADRS,
+ (xs + __OFFSET) >> 8, (xs + __OFFSET) & 0xff,
+ (xe + __OFFSET) >> 8, (xe + __OFFSET) & 0xff);
+ write_reg(par, CMD_PGEADRS, ys >> 8, ys & 0xff, ye >> 8,
+ ye & 0xff);
+ break;
+ case 180:
+ case 270:
+ write_reg(par, CMD_CLMADRS, xs >> 8, xs & 0xff, xe >> 8,
+ xe & 0xff);
+ write_reg(par, CMD_PGEADRS, ys >> 8, ys & 0xff, ye >> 8,
+ ye & 0xff);
+ break;
+ default:
+ par->info->var.rotate = 0; /* Fix incorrect setting */
+ }
+ write_reg(par, CMD_RAMWR); /* Write Data to GRAM mode */
+}
+
+/*
+7) MY: 1(bottom to top), 0(top to bottom) Row Address Order
+6) MX: 1(R to L), 0(L to R) Column Address Order
+5) MV: 1(Exchanged), 0(normal) Row/Column exchange
+4) ML: 1(bottom to top), 0(top to bottom) Vertical Refresh Order
+3) RGB: 1(BGR), 0(RGB) Color Space
+2) MH: 1(R to L), 0(L to R) Horizontal Refresh Order
+1)
+0)
+
+ MY, MX, MV, ML,RGB, MH, D1, D0
+ 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 //normal
+ 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 //Y-Mirror
+ 0 | 1 | 0 | 0 | 1 | 0 | 0 | 0 //X-Mirror
+ 1 | 1 | 0 | 0 | 1 | 0 | 0 | 0 //X-Y-Mirror
+ 0 | 0 | 1 | 0 | 1 | 0 | 0 | 0 //X-Y Exchange
+ 1 | 0 | 1 | 0 | 1 | 0 | 0 | 0 //X-Y Exchange, Y-Mirror
+ 0 | 1 | 1 | 0 | 1 | 0 | 0 | 0 //XY exchange
+ 1 | 1 | 1 | 0 | 1 | 0 | 0 | 0
+*/
+static int set_var(struct fbtft_par *par)
+{
+ u8 mactrl_data = 0; /* Avoid compiler warning */
+
+ fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+ switch (par->info->var.rotate) {
+ case 0:
+ mactrl_data = 0x08;
+ break;
+ case 180:
+ mactrl_data = 0xC8;
+ break;
+ case 270:
+ mactrl_data = 0xA8;
+ break;
+ case 90:
+ mactrl_data = 0x68;
+ break;
+ }
+
+ /* Colorspcae */
+ if (par->bgr)
+ mactrl_data |= (1 << 2);
+ write_reg(par, CMD_MADCTL, mactrl_data);
+ write_reg(par, CMD_RAMWR); /* Write Data to GRAM mode */
+ return 0;
+}
+
+#ifdef GAMMA_ADJ
+#define CURVE(num, idx) curves[num*par->gamma.num_values + idx]
+static int gamma_adj(struct fbtft_par *par, unsigned long *curves)
+{
+ unsigned long mask[] = {
+ 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
+ 0x1f, 0x3f, 0x0f, 0x0f, 0x7f, 0x1f,
+ 0x3F, 0x3F, 0x3F, 0x3F, 0x3F};
+ int i, j;
+
+ fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+ for (i = 0; i < GAMMA_NUM; i++)
+ for (j = 0; j < GAMMA_LEN; j++)
+ CURVE(i, j) &= mask[i*par->gamma.num_values + j];
+
+ write_reg(par, CMD_PGAMMAC,
+ CURVE(0, 0),
+ CURVE(0, 1),
+ CURVE(0, 2),
+ CURVE(0, 3),
+ CURVE(0, 4),
+ CURVE(0, 5),
+ CURVE(0, 6),
+ (CURVE(0, 7) << 4) | CURVE(0, 8),
+ CURVE(0, 9),
+ CURVE(0, 10),
+ CURVE(0, 11),
+ CURVE(0, 12),
+ CURVE(0, 13),
+ CURVE(0, 14),
+ CURVE(0, 15)
+ );
+
+ write_reg(par, CMD_RAMWR); /* Write Data to GRAM mode */
+
+ return 0;
+}
+#undef CURVE
+#endif
+
+static struct fbtft_display display = {
+ .regwidth = 8,
+ .width = WIDTH,
+ .height = HEIGHT,
+ .bpp = BPP,
+ .fps = FPS,
+#ifdef GAMMA_ADJ
+ .gamma_num = GAMMA_NUM,
+ .gamma_len = GAMMA_LEN,
+ .gamma = DEFAULT_GAMMA,
+#endif
+ .fbtftops = {
+ .init_display = init_display,
+ .set_addr_win = set_addr_win,
+ .set_var = set_var,
+#ifdef GAMMA_ADJ
+ .set_gamma = gamma_adj,
+#endif
+ },
+};
+
+FBTFT_REGISTER_DRIVER(DRVNAME, "ilitek,ili9163", &display);
+
+MODULE_ALIAS("spi:" DRVNAME);
+MODULE_ALIAS("platform:" DRVNAME);
+MODULE_ALIAS("spi:ili9163");
+MODULE_ALIAS("platform:ili9163");
+
+MODULE_DESCRIPTION("FB driver for the ILI9163 LCD Controller");
+MODULE_AUTHOR("Kozhevnikov Anatoly");
+MODULE_LICENSE("GPL");
Code Review / kvmfornfv.git / blobdiff