diff options
Diffstat (limited to 'drivers/staging/fbtft/fb_tinylcd.c')
| -rw-r--r-- | drivers/staging/fbtft/fb_tinylcd.c | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/drivers/staging/fbtft/fb_tinylcd.c b/drivers/staging/fbtft/fb_tinylcd.c new file mode 100644 index 000000000000..ca98bfb5c7df --- /dev/null +++ b/drivers/staging/fbtft/fb_tinylcd.c @@ -0,0 +1,124 @@ +/* + * Custom FB driver for tinylcd.com display + * + * 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. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/delay.h> + +#include "fbtft.h" + +#define DRVNAME "fb_tinylcd" +#define WIDTH 320 +#define HEIGHT 480 + + +static int init_display(struct fbtft_par *par) +{ + fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__); + + par->fbtftops.reset(par); + + write_reg(par, 0xB0, 0x80); + write_reg(par, 0xC0, 0x0A, 0x0A); + write_reg(par, 0xC1, 0x45, 0x07); + write_reg(par, 0xC2, 0x33); + write_reg(par, 0xC5, 0x00, 0x42, 0x80); + write_reg(par, 0xB1, 0xD0, 0x11); + write_reg(par, 0xB4, 0x02); + write_reg(par, 0xB6, 0x00, 0x22, 0x3B); + write_reg(par, 0xB7, 0x07); + write_reg(par, 0x36, 0x58); + write_reg(par, 0xF0, 0x36, 0xA5, 0xD3); + write_reg(par, 0xE5, 0x80); + write_reg(par, 0xE5, 0x01); + write_reg(par, 0xB3, 0x00); + write_reg(par, 0xE5, 0x00); + write_reg(par, 0xF0, 0x36, 0xA5, 0x53); + write_reg(par, 0xE0, 0x00, 0x35, 0x33, 0x00, 0x00, 0x00, + 0x00, 0x35, 0x33, 0x00, 0x00, 0x00); + write_reg(par, 0x3A, 0x55); + write_reg(par, 0x11); + udelay(250); + write_reg(par, 0x29); + + 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); + + /* Column address */ + write_reg(par, 0x2A, xs >> 8, xs & 0xFF, xe >> 8, xe & 0xFF); + + /* Row adress */ + write_reg(par, 0x2B, ys >> 8, ys & 0xFF, ye >> 8, ye & 0xFF); + + /* Memory write */ + write_reg(par, 0x2C); +} + +static int set_var(struct fbtft_par *par) +{ + fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__); + + switch (par->info->var.rotate) { + case 270: + write_reg(par, 0xB6, 0x00, 0x02, 0x3B); + write_reg(par, 0x36, 0x28); + break; + case 180: + write_reg(par, 0xB6, 0x00, 0x22, 0x3B); + write_reg(par, 0x36, 0x58); + break; + case 90: + write_reg(par, 0xB6, 0x00, 0x22, 0x3B); + write_reg(par, 0x36, 0x38); + break; + default: + write_reg(par, 0xB6, 0x00, 0x22, 0x3B); + write_reg(par, 0x36, 0x08); + break; + } + + return 0; +} + + +static struct fbtft_display display = { + .regwidth = 8, + .width = WIDTH, + .height = HEIGHT, + .fbtftops = { + .init_display = init_display, + .set_addr_win = set_addr_win, + .set_var = set_var, + }, +}; +FBTFT_REGISTER_DRIVER(DRVNAME, "neosec,tinylcd", &display); + +MODULE_ALIAS("spi:" DRVNAME); +MODULE_ALIAS("spi:tinylcd"); + +MODULE_DESCRIPTION("Custom FB driver for tinylcd.com display"); +MODULE_AUTHOR("Noralf Tronnes"); +MODULE_LICENSE("GPL"); |