/*
* Generic FB driver for TFT LCD displays
*
* Copyright (C) 2013 Noralf Tronnes
*
* 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/vmalloc.h>
#include <linux/gpio.h>
#include <linux/spi/spi.h>
#include <linux/delay.h>
#include "fbtft.h"
#define DRVNAME "flexfb"
static char *chip;
module_param(chip, charp, 0);
MODULE_PARM_DESC(chip, "LCD controller");
static unsigned int width;
module_param(width, uint, 0);
MODULE_PARM_DESC(width, "Display width");
static unsigned int height;
module_param(height, uint, 0);
MODULE_PARM_DESC(height, "Display height");
static int init[512];
static int init_num;
module_param_array(init, int, &init_num, 0);
MODULE_PARM_DESC(init, "Init sequence");
static unsigned int setaddrwin;
module_param(setaddrwin, uint, 0);
MODULE_PARM_DESC(setaddrwin, "Which set_addr_win() implementation to use");
static unsigned int buswidth = 8;
module_param(buswidth, uint, 0);
MODULE_PARM_DESC(buswidth, "Width of databus (default: 8)");
static unsigned int regwidth = 8;
module_param(regwidth, uint, 0);
MODULE_PARM_DESC(regwidth, "Width of controller register (default: 8)");
static bool nobacklight;
module_param(nobacklight, bool, 0);
MODULE_PARM_DESC(nobacklight, "Turn off backlight functionality.");
static bool latched;
module_param(latched, bool, 0);
MODULE_PARM_DESC(latched, "Use with latched 16-bit databus");
static int *initp;
static int initp_num;
/* default init sequences */
static int st7735r_init[] = {
-1, 0x01, -2, 150, -1, 0x11, -2, 500, -1, 0xB1, 0x01, 0x2C, 0x2D, -1, 0xB2, 0x01, 0x2C, 0x2D, -1, 0xB3, 0x01, 0x2C, 0x2D, 0x01, 0x2C, 0x2D,
-1, 0xB4, 0x07, -1, 0xC0, 0xA2, 0x02, 0x84, -1, 0xC1, 0xC5, -1, 0xC2, 0x0A, 0x00, -1, 0xC3, 0x8A, 0x2A, -1, 0xC4, 0x8A, 0xEE, -1, 0xC5, 0x0E,
-1, 0x20, -1, 0x36, 0xC0, -1, 0x3A, 0x05, -1, 0xE0, 0x0f, 0x1a, 0x0f, 0x18, 0x2f, 0x28, 0x20, 0x22, 0x1f, 0x1b, 0x23, 0x37, 0x00, 0x07, 0x02, 0x10,
-1, 0xE1, 0x0f, 0x1b, 0x0f, 0x17, 0x33, 0x2c, 0x29, 0x2e, 0x30, 0x30, 0x39, 0x3f, 0x00, 0x07, 0x03, 0x10, -1, 0x29, -2, 100, -1, 0x13, -2, 10, -3 };
static int ssd1289_init[] = {
-1, 0x00, 0x0001, -1, 0x03, 0xA8A4, -1, 0x0C, 0x0000, -1, 0x0D, 0x080C, -1, 0x0E, 0x2B00, -1, 0x1E, 0x00B7, -1, 0x01, 0x2B3F, -1, 0x02, 0x0600,
-1, 0x10, 0x0000, -1, 0x11, 0x6070, -1, 0x05, 0x0000, -1, 0x06, 0x0000, -1, 0x16, 0xEF1C, -1, 0x17, 0x0003, -1, 0x07, 0x0233, -1, 0x0B, 0x0000,
-1, 0x0F, 0x0000, -1, 0x41, 0x0000, -1, 0x42, 0x0000, -1, 0x48, 0x0000, -1, 0x49, 0x013F, -1, 0x4A, 0x0000, -1, 0x4B, 0x0000, -1, 0x44, 0xEF00,
-1, 0x45, 0x0000, -1, 0x46, 0x013F, -1, 0x30, 0x0707, -1, 0x31, 0x0204, -1, 0x32, 0x0204, -1, 0x33, 0x0502, -1, 0x34, 0x0507, -1, 0x35, 0x0204,
-1, 0x36, 0x0204, -1, 0x37, 0x0502, -1, 0x3A, 0x0302, -1, 0x3B, 0x0302, -1, 0x23, 0x0000, -1, 0x24, 0x0000, -1, 0x25, 0x8000, -1, 0x4f, 0x0000,
-1, 0x4e, 0x0000, -1, 0x22, -3 };
static int hx8340bn_init[] = {
-1, 0xC1, 0xFF, 0x83, 0x40, -1, 0x11, -2, 150, -1, 0xCA, 0x70, 0x00, 0xD9, -1, 0xB0, 0x01, 0x11,
-1, 0xC9, 0x90, 0x49, 0x10, 0x28, 0x28, 0x10, 0x00, 0x06, -2, 20, -1, 0xC2, 0x60, 0x71, 0x01, 0x0E, 0x05, 0x02, 0x09, 0x31, 0x0A,
-1, 0xC3, 0x67, 0x30, 0x61, 0x17, 0x48, 0x07, 0x05, 0x33, -2, 10, -1, 0xB5, 0x35, 0x20, 0x45, -1, 0xB4, 0x33, 0x25, 0x4C, -2, 10,
-1, 0x3A, 0x05, -1, 0x29, -2, 10, -3 };
static int ili9225_init[] = {
-1, 0x0001, 0x011C, -1, 0x0002, 0x0100, -1, 0x0003, 0x1030, -1, 0x0008, 0x0808, -1, 0x000C, 0x0000, -1, 0x000F, 0x0A01, -1, 0x0020, 0x0000,
-1, 0x0021, 0x0000, -2, 50, -1, 0x0010, 0x0A00, -1, 0x0011, 0x1038, -2, 50, -1, 0x0012, 0x1121, -1, 0x0013, 0x004E, -1, 0x0014, 0x676F,
-1, 0x0030, 0x0000, -1, 0x0031, 0x00DB, -1, 0x0032, 0x0000, -1, 0x0033, 0x0000, -1, 0x0034, 0x00DB, -1, 0x0035, 0x0000, -1, 0x0036, 0x00AF,
-1, 0x0037, 0x0000, -1, 0x0038, 0x00DB, -1, 0x0039, 0x0000, -1, 0x0050, 0x0000, -1, 0x0051, 0x060A, -1, 0x0052, 0x0D0A, -1, 0x0053, 0x0303,
-1, 0x0054, 0x0A0D, -1, 0x0055, 0x0A06, -1, 0x0056, 0x0000, -1, 0x0057, 0x0303, -1, 0x0058, 0x0000, -1, 0x0059, 0x0000, -2, 50,
-1, 0x0007, 0x1017, -2, 50, -3 };
static int ili9320_init[] = {
-1, 0x00E5, 0x8000, -1, 0x0000, 0x0001, -1, 0x0001, 0x0100, -1, 0x0002, 0x0700, -1, 0x0003, 0x1030, -1, 0x0004, 0x0000, -1, 0x0008, 0x0202,
-1, 0x0009, 0x0000, -1, 0x000A, 0x0000, -1, 0x000C, 0x0000, -1, 0x000D, 0x0000, -1, 0x000F, 0x0000, -1, 0x0010, 0x0000, -1, 0x0011, 0x0007,
-1, 0x0012, 0x0000, -1, 0x0013, 0x0000, -2, 200, -1, 0x0010, 0x17B0, -1, 0x0011, 0x0031, -2, 50, -1, 0x0012, 0x0138, -2, 50, -1, 0x0013, 0x1800,
-1, 0x0029, 0x0008, -2, 50, -1, 0x0020, 0x0000, -1, 0x0021, 0x0000, -1, 0x0030, 0x0000, -1, 0x0031, 0x0505, -1, 0x0032, 0x0004,
-1, 0x0035, 0x0006, -1, 0x0036, 0x0707, -1, 0x0037, 0x0105, -1, 0x0038, 0x0002, -1, 0x0039, 0x0707, -1, 0x003C, 0x0704, -1, 0x003D, 0x0807,
-1, 0x0050, 0x0000, -1, 0x0051, 0x00EF, -1, 0x0052, 0x0000, -1, 0x0053, 0x013F, -1, 0x0060, 0x2700, -1, 0x0061, 0x0001, -1, 0x006A, 0x0000,
-1, 0x0080, 0x0000, -1, 0x0081, 0x0000, -1, 0x0082, 0x0000, -1, 0x0083, 0x0000, -1, 0x0084, 0x0000, -1, 0x0085, 0x0000, -1, 0x0090, 0x0010,
-1, 0x0092, 0x0000, -1, 0x0093, 0x0003, -1, 0x0095, 0x0110, -1, 0x0097, 0x0000, -1, 0x0098, 0x0000, -1, 0x0007, 0x0173, -3 };
static int ili9325_init[] = {
-1, 0x00E3, 0x3008, -1, 0x00E7, 0x0012, -1, 0x00EF, 0x1231, -1, 0x0001, 0x0100, -1, 0x0002, 0x0700, -1, 0x0003, 0x1030, -1, 0x0004, 0x0000,
-1, 0x0008, 0x0207, -1, 0x0009, 0x0000, -1, 0x000A, 0x0000, -1, 0x000C, 0x0000, -1, 0x000D, 0x0000, -1, 0x000F, 0x0000, -1, 0x0010, 0x0000,
-1, 0x0011, 0x0007, -1, 0x0012, 0x0000, -1, 0x0013, 0x0000, -2, 200, -1, 0x0010, 0x1690, -1, 0x0011, 0x0223, -2, 50, -1, 0x0012, 0x000D, -2, 50,
-1, 0x0013, 0x1200, -1, 0x0029, 0x000A, -1, 0x002B, 0x000C, -2, 50, -1, 0x0020, 0x0000, -1, 0x0021, 0x0000, -1, 0x0030, 0x0000,
-1, 0x0031, 0x0506, -1, 0x0032, 0x0104, -1, 0x0035, 0x0207, -1, 0x0036, 0x000F, -1, 0x0037, 0x0306, -1, 0x0038, 0x0102, -1, 0x0039, 0x0707,
-1, 0x003C, 0x0702, -1, 0x003D, 0x1604, -1, 0x0050, 0x0000, -1, 0x0051, 0x00EF, -1, 0x0052, 0x0000, -1, 0x0053, 0x013F, -1, 0x0060, 0xA700,
-1, 0x0061, 0x0001, -1, 0x006A, 0x0000, -1, 0x0080, 0x0000, -1, 0x0081, 0x0000, -1, 0x0082, 0x0000, -1, 0x0083, 0x0000, -1, 0x0084, 0x0000,
-1, 0x0085, 0x0000, -1, 0x0090, 0x0010, -1, 0x0092, 0x0600, -1, 0x0007, 0x0133, -3 };
static int ili9341_init[] = {
-1, 0x28, -2, 20, -1, 0xCF, 0x00, 0x83, 0x30, -1, 0xED, 0x64, 0x03, 0x12, 0x81, -1, 0xE8, 0x85, 0x01, 0x79,
-1, 0xCB, 0x39, 0x2c, 0x00, 0x34, 0x02, -1, 0xF7, 0x20, -1, 0xEA, 0x00, 0x00, -1, 0xC0, 0x26, -1, 0xC1, 0x11,
-1, 0xC5, 0x35, 0x3E, -1, 0xC7, 0xBE, -1, 0xB1, 0x00, 0x1B, -1, 0xB6, 0x0a, 0x82, 0x27, 0x00, -1, 0xB7, 0x07,
-1, 0x3A, 0x55, -1, 0x36, 0x48, -1, 0x11, -2, 120, -1, 0x29, -2, 20, -3 };
static int ssd1351_init[] = { -1, 0xfd, 0x12, -1, 0xfd, 0xb1, -1, 0xae, -1, 0xb3, 0xf1, -1, 0xca, 0x7f, -1, 0xa0, 0x74,
-1, 0x15, 0x00, 0x7f, -1, 0x75, 0x00, 0x7f, -1, 0xa1, 0x00, -1, 0xa2, 0x00, -1, 0xb5, 0x00,
-1, 0xab, 0x01, -1, 0xb1, 0x32, -1, 0xb4, 0xa0, 0xb5, 0x55, -1, 0xbb, 0x17, -1, 0xbe, 0x05,
-1, 0xc1, 0xc8, 0x80, 0xc8, -1, 0xc7, 0x0f, -1, 0xb6, 0x01, -1, 0xa6, -1, 0xaf, -3 };
/**
* struct flexfb_lcd_controller - Describes the LCD controller properties
* @name: Model name of the chip
* @width: Width of display in pixels
* @height: Height of display in pixels
* @setaddrwin: Which set_addr_win() implementation to use
* @regwidth: LCD Controller Register width in bits
* @init_seq: LCD initialization sequence
* @init_seq_sz: Size of LCD initialization sequence
*/
struct flexfb_lcd_controller {
const char *name;
unsigned int width;
unsigned int height;
unsigned int setaddrwin;
unsigned int regwidth;
int *init_seq;
int init_seq_sz;
};
static const struct flexfb_lcd_controller flexfb_chip_table[] = {
{
.name = "st7735r",
.width = 120,
.height = 160,
.init_seq = st7735r_init,
.init_seq_sz = ARRAY_SIZE(st7735r_init),
},
{
.name = "hx8340bn",
.width = 176,
.height = 220,
.init_seq = hx8340bn_init,
.init_seq_sz = ARRAY_SIZE(hx8340bn_init),
},
{
.name = "ili9225",
.width = 176,
.height = 220,
.regwidth = 16,
.init_seq = ili9225_init,
.init_seq_sz = ARRAY_SIZE(ili9225_init),
},
{
.name = "ili9225",
.width = 176,
.height = 220,
.regwidth = 16,
.init_seq = ili9225_init,
.init_seq_sz = ARRAY_SIZE(ili9225_init),
},
{
.name = "ili9225",
.width = 176,
.height = 220,
.regwidth = 16,
.init_seq = ili9225_init,
.init_seq_sz = ARRAY_SIZE(ili9225_init),
},
{
.name = "ili9320",
.width = 240,
.height = 320,
.setaddrwin = 1,
.regwidth = 16,
.init_seq = ili9320_init,
.init_seq_sz = ARRAY_SIZE(ili9320_init),
},
{
.name = "ili9325",
.width = 240,
.height = 320,
.setaddrwin = 1,
.regwidth = 16,
.init_seq = ili9325_init,
.init_seq_sz = ARRAY_SIZE(ili9325_init),
},
{
.name = "ili9341",
.width = 240,
.height = 320,
.init_seq = ili9341_init,
.init_seq_sz = ARRAY_SIZE(ili9341_init),
},
{
.name = "ssd1289",
.width = 240,
.height = 320,
.setaddrwin = 2,
.regwidth = 16,
.init_seq = ssd1289_init,
.init_seq_sz = ARRAY_SIZE(ssd1289_init),
},
{
.name = "ssd1351",
.width = 128,
.height = 128,
.setaddrwin = 3,
.init_seq = ssd1351_init,
.init_seq_sz = ARRAY_SIZE(ssd1351_init),
},
};
/* ili9320, ili9325 */
static void flexfb_set_addr_win_1(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) {
/* R20h = Horizontal GRAM Start Address */
/* R21h = Vertical GRAM Start Address */
case 0:
write_reg(par, 0x0020, xs);
write_reg(par, 0x0021, ys);
break;
case 180:
write_reg(par, 0x0020, width - 1 - xs);
write_reg(par, 0x0021, height - 1 - ys);
break;
case 270:
write_reg(par, 0x0020, width - 1 - ys);
write_reg(par, 0x0021, xs);
break;
case 90:
write_reg(par, 0x0020, ys);
write_reg(par, 0x0021, height - 1 - xs);
break;
}
write_reg(par, 0x0022); /* Write Data to GRAM */
}
/* ssd1289 */
static void flexfb_set_addr_win_2(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) {
/* R4Eh - Set GDDRAM X address counter */
/* R4Fh - Set GDDRAM Y address counter */
case 0:
write_reg(par, 0x4e, xs);
write_reg(par, 0x4f, ys);
break;
case 180:
write_reg(par, 0x4e, par->info->var.xres - 1 - xs);
write_reg(par, 0x4f, par->info->var.yres - 1 - ys);
break;
case 270:
write_reg(par, 0x4e, par->info->var.yres - 1 - ys);
write_reg(par, 0x4f, xs);
break;
case 90:
write_reg(par, 0x4e, ys);
write_reg(par, 0x4f, par->info->var.xres - 1 - xs);
break;
}
/* R22h - RAM data write */
write_reg(par, 0x22, 0);
}
/* ssd1351 */
static void set_addr_win_3(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);
write_reg(par, 0x15, xs, xe);
write_reg(par, 0x75, ys, ye);
write_reg(par, 0x5C);
}
static int flexfb_verify_gpios_dc(struct fbtft_par *par)
{
fbtft_par_dbg(DEBUG_VERIFY_GPIOS, par, "%s()\n", __func__);
if (par->gpio.dc < 0) {
dev_err(par->info->device,
"Missing info about 'dc' gpio. Aborting.\n");
return -EINVAL;
}
return 0;
}
static int flexfb_verify_gpios_db(struct fbtft_par *par)
{
int i;
int num_db = buswidth;
fbtft_par_dbg(DEBUG_VERIFY_GPIOS, par, "%s()\n", __func__);
if (par->gpio.dc < 0) {
dev_err(par->info->device, "Missing info about 'dc' gpio. Aborting.\n");
return -EINVAL;
}
if (par->gpio.wr < 0) {
dev_err(par->info->device, "Missing info about 'wr' gpio. Aborting.\n");
return -EINVAL;
}
if (latched && (par->gpio.latch < 0)) {
dev_err(par->info->device, "Missing info about 'latch' gpio. Aborting.\n");
return -EINVAL;
}
if (latched)
num_db = buswidth / 2;
for (i = 0; i < num_db; i++) {
if (par->gpio.db[i] < 0) {
dev_err(par->info->device,
"Missing info about 'db%02d' gpio. Aborting.\n",
i);
return -EINVAL;
}
}
return 0;
}
static void flexfb_chip_load_param(const struct flexfb_lcd_controller *chip)
{
if (!width)
width = chip->width;
if (!height)
height = chip->height;
setaddrwin = chip->setaddrwin;
if (chip->regwidth)
regwidth = chip->regwidth;
if (!init_num) {
initp = chip->init_seq;
initp_num = chip->init_seq_sz;
}
}
static struct fbtft_display flex_display = { };
static int flexfb_chip_init(const struct device *dev)
{
int i;
for (i = 0; i < ARRAY_SIZE(flexfb_chip_table); i++)
if (!strcmp(chip, flexfb_chip_table[i].name)) {
flexfb_chip_load_param(&flexfb_chip_table[i]);
return 0;
}
dev_err(dev, "chip=%s is not supported\n", chip);
return -EINVAL;
}
static int flexfb_probe_common(struct spi_device *sdev,
struct platform_device *pdev)
{
struct device *dev;
struct fb_info *info;
struct fbtft_par *par;
int ret;
initp = init;
initp_num = init_num;
if (sdev)
dev = &sdev->dev;
else
dev = &pdev->dev;
fbtft_init_dbg(dev, "%s(%s)\n", __func__,
sdev ? "'SPI device'" : "'Platform device'");
if (chip) {
ret = flexfb_chip_init(dev);
if (ret)
return ret;
}
if (width == 0 || height == 0) {
dev_err(dev, "argument(s) missing: width and height has to be set.\n");
return -EINVAL;
}
flex_display.width = width;
flex_display.height = height;
fbtft_init_dbg(dev, "Display resolution: %dx%d\n", width, height);
fbtft_init_dbg(dev, "chip = %s\n", chip ? chip : "not set");
fbtft_init_dbg(dev, "setaddrwin = %d\n", setaddrwin);
fbtft_init_dbg(dev, "regwidth = %d\n", regwidth);
fbtft_init_dbg(dev, "buswidth = %d\n", buswidth);
info = fbtft_framebuffer_alloc(&flex_display, dev, dev->platform_data);
if (!info)
return -ENOMEM;
par = info->par;
if (sdev)
par->spi = sdev;
else
par->pdev = pdev;
if (!par->init_sequence)
par->init_sequence = initp;
par->fbtftops.init_display = fbtft_init_display;
/* registerwrite functions */
switch (regwidth) {
case 8:
par->fbtftops.write_register = fbtft_write_reg8_bus8;
break;
case 16:
par->fbtftops.write_register = fbtft_write_reg16_bus8;
break;
default:
dev_err(dev,
"argument 'regwidth': %d is not supported.\n",
regwidth);
return -EINVAL;
}
/* bus functions */
if (sdev) {
par->fbtftops.write = fbtft_write_spi;
switch (buswidth) {
case 8:
par->fbtftops.write_vmem = fbtft_write_vmem16_bus8;
if (!par->startbyte)
par->fbtftops.verify_gpios = flexfb_verify_gpios_dc;
break;
case 9:
if (regwidth == 16) {
dev_err(dev, "argument 'regwidth': %d is not supported with buswidth=%d and SPI.\n", regwidth, buswidth);
return -EINVAL;
}
par->fbtftops.write_register = fbtft_write_reg8_bus9;
par->fbtftops.write_vmem = fbtft_write_vmem16_bus9;
if (par->spi->master->bits_per_word_mask
& SPI_BPW_MASK(9)) {
par->spi->bits_per_word = 9;
} else {
dev_warn(dev,
"9-bit SPI not available, emulating using 8-bit.\n");
/* allocate buffer with room for dc bits */
par->extra = devm_kzalloc(par->info->device,
par->txbuf.len + (par->txbuf.len / 8) + 8,
GFP_KERNEL);
if (!par->extra) {
ret = -ENOMEM;
goto out_release;
}
par->fbtftops.write = fbtft_write_spi_emulate_9;
}
break;
default:
dev_err(dev, "argument 'buswidth': %d is not supported with SPI.\n", buswidth);
return -EINVAL;
}
} else {
par->fbtftops.verify_gpios = flexfb_verify_gpios_db;
switch (buswidth) {
case 8:
par->fbtftops.write = fbtft_write_gpio8_wr;
par->fbtftops.write_vmem = fbtft_write_vmem16_bus8;
break;
case 16:
par->fbtftops.write_register = fbtft_write_reg16_bus16;
if (latched)
par->fbtftops.write = fbtft_write_gpio16_wr_latched;
else
par->fbtftops.write = fbtft_write_gpio16_wr;
par->fbtftops.write_vmem = fbtft_write_vmem16_bus16;
break;
default:
dev_err(dev, "argument 'buswidth': %d is not supported with parallel.\n", buswidth);
return -EINVAL;
}
}
/* set_addr_win function */
switch (setaddrwin) {
case 0:
/* use default */
break;
case 1:
par->fbtftops.set_addr_win = flexfb_set_addr_win_1;
break;
case 2:
par->fbtftops.set_addr_win = flexfb_set_addr_win_2;
break;
case 3:
par->fbtftops.set_addr_win = set_addr_win_3;
break;
default:
dev_err(dev, "argument 'setaddrwin': unknown value %d.\n",
setaddrwin);
return -EINVAL;
}
if (!nobacklight)
par->fbtftops.register_backlight = fbtft_register_backlight;
ret = fbtft_register_framebuffer(info);
if (ret < 0)
goto out_release;
return 0;
out_release:
fbtft_framebuffer_release(info);
return ret;
}
static int flexfb_remove_common(struct device *dev, struct fb_info *info)
{
struct fbtft_par *par;
if (!info)
return -EINVAL;
par = info->par;
if (par)
fbtft_par_dbg(DEBUG_DRIVER_INIT_FUNCTIONS, par, "%s()\n",
__func__);
fbtft_unregister_framebuffer(info);
fbtft_framebuffer_release(info);
return 0;
}
static int flexfb_probe_spi(struct spi_device *spi)
{
return flexfb_probe_common(spi, NULL);
}
static int flexfb_remove_spi(struct spi_device *spi)
{
struct fb_info *info = spi_get_drvdata(spi);
return flexfb_remove_common(&spi->dev, info);
}
static int flexfb_probe_pdev(struct platform_device *pdev)
{
return flexfb_probe_common(NULL, pdev);
}
static int flexfb_remove_pdev(struct platform_device *pdev)
{
struct fb_info *info = platform_get_drvdata(pdev);
return flexfb_remove_common(&pdev->dev, info);
}
static struct spi_driver flexfb_spi_driver = {
.driver = {
.name = DRVNAME,
.owner = THIS_MODULE,
},
.probe = flexfb_probe_spi,
.remove = flexfb_remove_spi,
};
static const struct platform_device_id flexfb_platform_ids[] = {
{ "flexpfb", 0 },
{ },
};
static struct platform_driver flexfb_platform_driver = {
.driver = {
.name = DRVNAME,
},
.id_table = flexfb_platform_ids,
.probe = flexfb_probe_pdev,
.remove = flexfb_remove_pdev,
};
static int __init flexfb_init(void)
{
int ret, ret2;
ret = spi_register_driver(&flexfb_spi_driver);
ret2 = platform_driver_register(&flexfb_platform_driver);
if (ret < 0)
return ret;
return ret2;
}
static void __exit flexfb_exit(void)
{
spi_unregister_driver(&flexfb_spi_driver);
platform_driver_unregister(&flexfb_platform_driver);
}
/* ------------------------------------------------------------------------- */
module_init(flexfb_init);
module_exit(flexfb_exit);
MODULE_DESCRIPTION("Generic FB driver for TFT LCD displays");
MODULE_AUTHOR("Noralf Tronnes");
MODULE_LICENSE("GPL");
