diff options
Diffstat (limited to 'drivers/staging/fbtft/fb_s6d02a1.c')
| -rw-r--r-- | drivers/staging/fbtft/fb_s6d02a1.c | 168 |
1 files changed, 168 insertions, 0 deletions
diff --git a/drivers/staging/fbtft/fb_s6d02a1.c b/drivers/staging/fbtft/fb_s6d02a1.c new file mode 100644 index 000000000000..e412a42443e5 --- /dev/null +++ b/drivers/staging/fbtft/fb_s6d02a1.c @@ -0,0 +1,168 @@ +/* + * FB driver for the S6D02A1 LCD Controller + * + * Based on fb_st7735r.c by Noralf Tronnes + * Init code from UTFT library by Henning Karlsen + * + * 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 "fbtft.h" + +#define DRVNAME "fb_s6d02a1" + +static int default_init_sequence[] = { + + -1, 0xf0, 0x5a, 0x5a, + + -1, 0xfc, 0x5a, 0x5a, + + -1, 0xfa, 0x02, 0x1f, 0x00, 0x10, 0x22, 0x30, 0x38, 0x3A, 0x3A, 0x3A, 0x3A, 0x3A, 0x3d, 0x02, 0x01, + + -1, 0xfb, 0x21, 0x00, 0x02, 0x04, 0x07, 0x0a, 0x0b, 0x0c, 0x0c, 0x16, 0x1e, 0x30, 0x3f, 0x01, 0x02, + + /* power setting sequence */ + -1, 0xfd, 0x00, 0x00, 0x00, 0x17, 0x10, 0x00, 0x01, 0x01, 0x00, 0x1f, 0x1f, + + -1, 0xf4, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3f, 0x3f, 0x07, 0x00, 0x3C, 0x36, 0x00, 0x3C, 0x36, 0x00, + + -1, 0xf5, 0x00, 0x70, 0x66, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x6d, 0x66, 0x06, + + -1, 0xf6, 0x02, 0x00, 0x3f, 0x00, 0x00, 0x00, 0x02, 0x00, 0x06, 0x01, 0x00, + + -1, 0xf2, 0x00, 0x01, 0x03, 0x08, 0x08, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x04, 0x08, 0x08, + + -1, 0xf8, 0x11, + + -1, 0xf7, 0xc8, 0x20, 0x00, 0x00, + + -1, 0xf3, 0x00, 0x00, + + -1, 0x11, + -2, 50, + + -1, 0xf3, 0x00, 0x01, + -2, 50, + -1, 0xf3, 0x00, 0x03, + -2, 50, + -1, 0xf3, 0x00, 0x07, + -2, 50, + -1, 0xf3, 0x00, 0x0f, + -2, 50, + + -1, 0xf4, 0x00, 0x04, 0x00, 0x00, 0x00, 0x3f, 0x3f, 0x07, 0x00, 0x3C, 0x36, 0x00, 0x3C, 0x36, 0x00, + -2, 50, + + -1, 0xf3, 0x00, 0x1f, + -2, 50, + -1, 0xf3, 0x00, 0x7f, + -2, 50, + + -1, 0xf3, 0x00, 0xff, + -2, 50, + + -1, 0xfd, 0x00, 0x00, 0x00, 0x17, 0x10, 0x00, 0x00, 0x01, 0x00, 0x16, 0x16, + + -1, 0xf4, 0x00, 0x09, 0x00, 0x00, 0x00, 0x3f, 0x3f, 0x07, 0x00, 0x3C, 0x36, 0x00, 0x3C, 0x36, 0x00, + + /* initializing sequence */ + + -1, 0x36, 0x08, + + -1, 0x35, 0x00, + + -1, 0x3a, 0x05, + + /* gamma setting sequence */ + -1, 0x26, 0x01, /* preset gamma curves, possible values 0x01, 0x02, 0x04, 0x08 */ + + -2, 150, + -1, 0x29, + -1, 0x2c, + /* end marker */ + -3 + +}; + +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); +} + +#define MY (1 << 7) +#define MX (1 << 6) +#define MV (1 << 5) +static int set_var(struct fbtft_par *par) +{ + fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__); + + /* MADCTL - Memory data access control + RGB/BGR: + 1. Mode selection pin SRGB + RGB H/W pin for color filter setting: 0=RGB, 1=BGR + 2. MADCTL RGB bit + RGB-BGR ORDER color filter panel: 0=RGB, 1=BGR */ + switch (par->info->var.rotate) { + case 0: + write_reg(par, 0x36, MX | MY | (par->bgr << 3)); + break; + case 270: + write_reg(par, 0x36, MY | MV | (par->bgr << 3)); + break; + case 180: + write_reg(par, 0x36, (par->bgr << 3)); + break; + case 90: + write_reg(par, 0x36, MX | MV | (par->bgr << 3)); + break; + } + + return 0; +} + +static struct fbtft_display display = { + .regwidth = 8, + .width = 128, + .height = 160, + .init_sequence = default_init_sequence, + .fbtftops = { + .set_addr_win = set_addr_win, + .set_var = set_var, + }, +}; +FBTFT_REGISTER_DRIVER(DRVNAME, "samsung,s6d02a1", &display); + +MODULE_ALIAS("spi:" DRVNAME); +MODULE_ALIAS("platform:" DRVNAME); +MODULE_ALIAS("spi:s6d02a1"); +MODULE_ALIAS("platform:s6d02a1"); + +MODULE_DESCRIPTION("FB driver for the S6D02A1 LCD Controller"); +MODULE_AUTHOR("WOLFGANG BUENING"); +MODULE_LICENSE("GPL"); |