diff options
Diffstat (limited to 'drivers/staging/fbtft/fb_s6d02a1.c')
-rw-r--r-- | drivers/staging/fbtft/fb_s6d02a1.c | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/drivers/staging/fbtft/fb_s6d02a1.c b/drivers/staging/fbtft/fb_s6d02a1.c new file mode 100644 index 000000000..d3d6871d8 --- /dev/null +++ b/drivers/staging/fbtft/fb_s6d02a1.c @@ -0,0 +1,166 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * FB driver for the S6D02A1 LCD Controller + * + * Based on fb_st7735r.c by Noralf Tronnes + * Init code from UTFT library by Henning Karlsen + */ + +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/init.h> +#include <video/mipi_display.h> + +#include "fbtft.h" + +#define DRVNAME "fb_s6d02a1" + +static const s16 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, MIPI_DCS_EXIT_SLEEP_MODE, + -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, MIPI_DCS_SET_ADDRESS_MODE, 0x08, + + -1, MIPI_DCS_SET_TEAR_ON, 0x00, + + -1, MIPI_DCS_SET_PIXEL_FORMAT, 0x05, + + /* gamma setting - possible values 0x01, 0x02, 0x04, 0x08 */ + -1, MIPI_DCS_SET_GAMMA_CURVE, 0x01, + + -2, 150, + -1, MIPI_DCS_SET_DISPLAY_ON, + -1, MIPI_DCS_WRITE_MEMORY_START, + /* end marker */ + -3 + +}; + +static void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye) +{ + write_reg(par, MIPI_DCS_SET_COLUMN_ADDRESS, + xs >> 8, xs & 0xFF, xe >> 8, xe & 0xFF); + + write_reg(par, MIPI_DCS_SET_PAGE_ADDRESS, + ys >> 8, ys & 0xFF, ye >> 8, ye & 0xFF); + + write_reg(par, MIPI_DCS_WRITE_MEMORY_START); +} + +#define MY BIT(7) +#define MX BIT(6) +#define MV BIT(5) +static int set_var(struct fbtft_par *par) +{ + /* + * Memory data access control (0x36h) + * 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, MIPI_DCS_SET_ADDRESS_MODE, + MX | MY | (par->bgr << 3)); + break; + case 270: + write_reg(par, MIPI_DCS_SET_ADDRESS_MODE, + MY | MV | (par->bgr << 3)); + break; + case 180: + write_reg(par, MIPI_DCS_SET_ADDRESS_MODE, + par->bgr << 3); + break; + case 90: + write_reg(par, MIPI_DCS_SET_ADDRESS_MODE, + 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"); |