1 files changed, 103 insertions, 0 deletions
diff --git a/drivers/staging/fbtft/fb_ili9486.c b/drivers/staging/fbtft/fb_ili9486.c
new file mode 100644
index 000000000..66210a713
--- /dev/null
+++ b/drivers/staging/fbtft/fb_ili9486.c
@@ -0,0 +1,103 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * FB driver for the ILI9486 LCD Controller
+ *
+ * Copyright (C) 2014 Noralf Tronnes
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <video/mipi_display.h>
+
+#include "fbtft.h"
+
+#define DRVNAME		"fb_ili9486"
+#define WIDTH		320
+#define HEIGHT		480
+
+/* this init sequence matches PiScreen */
+static const s16 default_init_sequence[] = {
+	/* Interface Mode Control */
+	-1, 0xb0, 0x0,
+	-1, MIPI_DCS_EXIT_SLEEP_MODE,
+	-2, 250,
+	/* Interface Pixel Format */
+	-1, MIPI_DCS_SET_PIXEL_FORMAT, 0x55,
+	/* Power Control 3 */
+	-1, 0xC2, 0x44,
+	/* VCOM Control 1 */
+	-1, 0xC5, 0x00, 0x00, 0x00, 0x00,
+	/* PGAMCTRL(Positive Gamma Control) */
+	-1, 0xE0, 0x0F, 0x1F, 0x1C, 0x0C, 0x0F, 0x08, 0x48, 0x98,
+		  0x37, 0x0A, 0x13, 0x04, 0x11, 0x0D, 0x00,
+	/* NGAMCTRL(Negative Gamma Control) */
+	-1, 0xE1, 0x0F, 0x32, 0x2E, 0x0B, 0x0D, 0x05, 0x47, 0x75,
+		  0x37, 0x06, 0x10, 0x03, 0x24, 0x20, 0x00,
+	/* Digital Gamma Control 1 */
+	-1, 0xE2, 0x0F, 0x32, 0x2E, 0x0B, 0x0D, 0x05, 0x47, 0x75,
+		  0x37, 0x06, 0x10, 0x03, 0x24, 0x20, 0x00,
+	-1, MIPI_DCS_EXIT_SLEEP_MODE,
+	-1, MIPI_DCS_SET_DISPLAY_ON,
+	/* 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);
+}
+
+static int set_var(struct fbtft_par *par)
+{
+	switch (par->info->var.rotate) {
+	case 0:
+		write_reg(par, MIPI_DCS_SET_ADDRESS_MODE,
+			  0x80 | (par->bgr << 3));
+		break;
+	case 90:
+		write_reg(par, MIPI_DCS_SET_ADDRESS_MODE,
+			  0x20 | (par->bgr << 3));
+		break;
+	case 180:
+		write_reg(par, MIPI_DCS_SET_ADDRESS_MODE,
+			  0x40 | (par->bgr << 3));
+		break;
+	case 270:
+		write_reg(par, MIPI_DCS_SET_ADDRESS_MODE,
+			  0xE0 | (par->bgr << 3));
+		break;
+	default:
+		break;
+	}
+
+	return 0;
+}
+
+static struct fbtft_display display = {
+	.regwidth = 8,
+	.width = WIDTH,
+	.height = HEIGHT,
+	.init_sequence = default_init_sequence,
+	.fbtftops = {
+		.set_addr_win = set_addr_win,
+		.set_var = set_var,
+	},
+};
+
+FBTFT_REGISTER_DRIVER(DRVNAME, "ilitek,ili9486", &display);
+
+MODULE_ALIAS("spi:" DRVNAME);
+MODULE_ALIAS("platform:" DRVNAME);
+MODULE_ALIAS("spi:ili9486");
+MODULE_ALIAS("platform:ili9486");
+
+MODULE_DESCRIPTION("FB driver for the ILI9486 LCD Controller");
+MODULE_AUTHOR("Noralf Tronnes");
+MODULE_LICENSE("GPL");