This commit adds the fb_ili9486 driver from the fbtft project at
https://github.com/notro/fbtft.
Signed-off-by: Thomas Petazzoni <thomas.petazz...@free-electrons.com>
---
drivers/staging/fbtft/Kconfig | 6 ++
drivers/staging/fbtft/Makefile | 1 +
drivers/staging/fbtft/fb_ili9486.c | 121 +++++++++++++++++++++++++++++++++++++
3 files changed, 128 insertions(+)
create mode 100644 drivers/staging/fbtft/fb_ili9486.c
diff --git a/drivers/staging/fbtft/Kconfig b/drivers/staging/fbtft/Kconfig
index 86a1bee..ca73537 100644
--- a/drivers/staging/fbtft/Kconfig
+++ b/drivers/staging/fbtft/Kconfig
@@ -67,3 +67,9 @@ config FB_TFT_ILI9481
depends on FB_TFT
help
Generic Framebuffer support for ILI9481
+
+config FB_TFT_ILI9486
+ tristate "FB driver for the ILI9486 LCD Controller"
+ depends on FB_TFT
+ help
+ Generic Framebuffer support for ILI9486
diff --git a/drivers/staging/fbtft/Makefile b/drivers/staging/fbtft/Makefile
index 0740641..8e633cf 100644
--- a/drivers/staging/fbtft/Makefile
+++ b/drivers/staging/fbtft/Makefile
@@ -13,3 +13,4 @@ obj-$(CONFIG_FB_TFT_ILI9325) += fb_ili9325.o
obj-$(CONFIG_FB_TFT_ILI9340) += fb_ili9340.o
obj-$(CONFIG_FB_TFT_ILI9341) += fb_ili9341.o
obj-$(CONFIG_FB_TFT_ILI9481) += fb_ili9481.o
+obj-$(CONFIG_FB_TFT_ILI9486) += fb_ili9486.o
diff --git a/drivers/staging/fbtft/fb_ili9486.c
b/drivers/staging/fbtft/fb_ili9486.c
new file mode 100644
index 0000000..95b8999
--- /dev/null
+++ b/drivers/staging/fbtft/fb_ili9486.c
@@ -0,0 +1,121 @@
+/*
+ * FB driver for the ILI9486 LCD Controller
+ *
+ * Copyright (C) 2014 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 "fbtft.h"
+
+#define DRVNAME "fb_ili9486"
+#define WIDTH 320
+#define HEIGHT 480
+
+
+/* this init sequence matches PiScreen */
+static int default_init_sequence[] = {
+ /* Interface Mode Control */
+ -1, 0xb0, 0x0,
+ /* Sleep OUT */
+ -1, 0x11,
+ -2, 250,
+ /* Interface Pixel Format */
+ -1, 0x3A, 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,
+ /* Sleep OUT */
+ -1, 0x11,
+ /* Display ON */
+ -1, 0x29,
+ /* 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);
+}
+
+static int set_var(struct fbtft_par *par)
+{
+ fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+ switch (par->info->var.rotate) {
+ case 0:
+ write_reg(par, 0x36, 0x80 | (par->bgr << 3));
+ break;
+ case 90:
+ write_reg(par, 0x36, 0x20 | (par->bgr << 3));
+ break;
+ case 180:
+ write_reg(par, 0x36, 0x40 | (par->bgr << 3));
+ break;
+ case 270:
+ write_reg(par, 0x36, 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");
--
2.1.0
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