From 57f0f512b273f60d52568b8c6b77e17f5636edc0 Mon Sep 17 00:00:00 2001
From: André Fabian Silva Delgado <emulatorman@parabola.nu>
Date: Wed, 5 Aug 2015 17:04:01 -0300
Subject: Initial import

---
 drivers/staging/fbtft/fb_ili9481.c | 117 +++++++++++++++++++++++++++++++++++++
 1 file changed, 117 insertions(+)
 create mode 100644 drivers/staging/fbtft/fb_ili9481.c

(limited to 'drivers/staging/fbtft/fb_ili9481.c')

diff --git a/drivers/staging/fbtft/fb_ili9481.c b/drivers/staging/fbtft/fb_ili9481.c
new file mode 100644
index 000000000..8bae09c2d
--- /dev/null
+++ b/drivers/staging/fbtft/fb_ili9481.c
@@ -0,0 +1,117 @@
+/*
+ * FB driver for the ILI9481 LCD Controller
+ *
+ * Copyright (c) 2014 Petr Olivka
+ * 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_ili9481"
+#define WIDTH		320
+#define HEIGHT		480
+
+static int default_init_sequence[] = {
+
+	/* SLP_OUT - Sleep out */
+	-1, 0x11,
+	-2, 50,
+	/* Power setting */
+	-1, 0xD0, 0x07, 0x42, 0x18,
+	/* VCOM */
+	-1, 0xD1, 0x00, 0x07, 0x10,
+	/* Power setting for norm. mode */
+	-1, 0xD2, 0x01, 0x02,
+	/* Panel driving setting */
+	-1, 0xC0, 0x10, 0x3B, 0x00, 0x02, 0x11,
+	/* Frame rate & inv. */
+	-1, 0xC5, 0x03,
+	/* Pixel format */
+	-1, 0x3A, 0x55,
+	/* Gamma */
+	-1, 0xC8, 0x00, 0x32, 0x36, 0x45, 0x06, 0x16,
+		  0x37, 0x75, 0x77, 0x54, 0x0C, 0x00,
+	/* DISP_ON */
+	-1, 0x29,
+	-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 address */
+	write_reg(par, 0x2b, ys >> 8, ys & 0xff, ye >> 8, ye & 0xff);
+
+	/* memory write */
+	write_reg(par, 0x2c);
+}
+
+#define HFLIP 0x01
+#define VFLIP 0x02
+#define ROWxCOL 0x20
+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, 0x36, ROWxCOL | HFLIP | VFLIP | (par->bgr << 3));
+		break;
+	case 180:
+		write_reg(par, 0x36, VFLIP | (par->bgr << 3));
+		break;
+	case 90:
+		write_reg(par, 0x36, ROWxCOL | (par->bgr << 3));
+		break;
+	default:
+		write_reg(par, 0x36, HFLIP | (par->bgr << 3));
+		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,ili9481", &display);
+
+MODULE_ALIAS("spi:" DRVNAME);
+MODULE_ALIAS("platform:" DRVNAME);
+MODULE_ALIAS("spi:ili9481");
+MODULE_ALIAS("platform:ili9481");
+
+MODULE_DESCRIPTION("FB driver for the ILI9481 LCD Controller");
+MODULE_AUTHOR("Petr Olivka");
+MODULE_LICENSE("GPL");
-- 
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