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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/staging/fbtft/fb_tinylcd.c | |
parent | Initial commit. (diff) | |
download | linux-upstream.tar.xz linux-upstream.zip |
Adding upstream version 6.1.76.upstream/6.1.76upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/staging/fbtft/fb_tinylcd.c')
-rw-r--r-- | drivers/staging/fbtft/fb_tinylcd.c | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/drivers/staging/fbtft/fb_tinylcd.c b/drivers/staging/fbtft/fb_tinylcd.c new file mode 100644 index 000000000..9469248f2 --- /dev/null +++ b/drivers/staging/fbtft/fb_tinylcd.c @@ -0,0 +1,103 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Custom FB driver for tinylcd.com display + * + * Copyright (C) 2013 Noralf Tronnes + */ + +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/delay.h> +#include <video/mipi_display.h> + +#include "fbtft.h" + +#define DRVNAME "fb_tinylcd" +#define WIDTH 320 +#define HEIGHT 480 + +static int init_display(struct fbtft_par *par) +{ + 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, MIPI_DCS_SET_ADDRESS_MODE, 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, MIPI_DCS_SET_PIXEL_FORMAT, 0x55); + write_reg(par, MIPI_DCS_EXIT_SLEEP_MODE); + udelay(250); + write_reg(par, MIPI_DCS_SET_DISPLAY_ON); + + return 0; +} + +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); +} + +static int set_var(struct fbtft_par *par) +{ + switch (par->info->var.rotate) { + case 270: + write_reg(par, 0xB6, 0x00, 0x02, 0x3B); + write_reg(par, MIPI_DCS_SET_ADDRESS_MODE, 0x28); + break; + case 180: + write_reg(par, 0xB6, 0x00, 0x22, 0x3B); + write_reg(par, MIPI_DCS_SET_ADDRESS_MODE, 0x58); + break; + case 90: + write_reg(par, 0xB6, 0x00, 0x22, 0x3B); + write_reg(par, MIPI_DCS_SET_ADDRESS_MODE, 0x38); + break; + default: + write_reg(par, 0xB6, 0x00, 0x22, 0x3B); + write_reg(par, MIPI_DCS_SET_ADDRESS_MODE, 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"); |