staging: fbtft: add fb_hx8353d driver

This commit adds the fb_hx8353d driver from the fbtft project at
https://github.com/notro/fbtft.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Noralf Tronnes <notro@tronnes.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/fbtft/Kconfig b/drivers/staging/fbtft/Kconfig
index 9bb6e7bcb5a04da4714a8ae13f0288ab74a6794c..015429b5d77c32a85bda87d0bd9603d2bdfd6381 100644 (file)
--- a/drivers/staging/fbtft/Kconfig
+++ b/drivers/staging/fbtft/Kconfig
@@ -31,3 +31,9 @@ config FB_TFT_HX8347D
        depends on FB_TFT
        help
          Generic Framebuffer support for HX8347D
+
+config FB_TFT_HX8353D
+       tristate "FB driver for the HX8353D LCD Controller"
+       depends on FB_TFT
+       help
+         Generic Framebuffer support for HX8353D

diff --git a/drivers/staging/fbtft/Makefile b/drivers/staging/fbtft/Makefile
index de68bf8b3a2ccea69f568cbb6ea5fea4dc9c0748..766e2855adde810718fe5578d33c61c4b1c8e120 100644 (file)
--- a/drivers/staging/fbtft/Makefile
+++ b/drivers/staging/fbtft/Makefile
@@ -7,3 +7,4 @@ obj-$(CONFIG_FB_TFT_AGM1264K_FL) += fb_agm1264k-fl.o
 obj-$(CONFIG_FB_TFT_BD663474)    += fb_bd663474.o
 obj-$(CONFIG_FB_TFT_HX8340BN)    += fb_hx8340bn.o
 obj-$(CONFIG_FB_TFT_HX8347D)     += fb_hx8347d.o
+obj-$(CONFIG_FB_TFT_HX8353D)     += fb_hx8353d.o

diff --git a/drivers/staging/fbtft/fb_hx8353d.c b/drivers/staging/fbtft/fb_hx8353d.c
new file mode 100644 (file)
index 0000000..c9512dc
--- /dev/null
+++ b/drivers/staging/fbtft/fb_hx8353d.c
@@ -0,0 +1,166 @@
+/*
+ * FB driver for the HX8353D 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_hx8353d"
+#define DEFAULT_GAMMA "50 77 40 08 BF 00 03 0F 00 01 73 00 72 03 B0 0F 08 00 0F"
+
+static int init_display(struct fbtft_par *par)
+{
+
+       fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+       par->fbtftops.reset(par);
+       mdelay(150);
+
+       /* SETEXTC */
+       write_reg(par, 0xB9, 0xFF, 0x83, 0x53);
+
+       /* RADJ */
+       write_reg(par, 0xB0, 0x3C, 0x01);
+
+       /* VCOM */
+       write_reg(par, 0xB6, 0x94, 0x6C, 0x50);
+
+       /* PWR */
+       write_reg(par, 0xB1, 0x00, 0x01, 0x1B, 0x03, 0x01, 0x08, 0x77, 0x89);
+
+       /* COLMOD */
+       write_reg(par, 0x3A, 0x05);
+
+       /* MEM ACCESS */
+       write_reg(par, 0x36, 0xC0);
+
+       /* SLPOUT - Sleep out & booster on */
+       write_reg(par, 0x11);
+       mdelay(150);
+
+       /* DISPON - Display On */
+       write_reg(par, 0x29);
+
+       /* RGBSET */
+       write_reg(par, 0x2D,
+                0,  2,  4,  6,  8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30,
+               32, 34, 36, 38, 40, 42, 44, 46, 48, 50, 52, 54, 56, 58, 60, 62,
+                0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14, 15,
+               16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
+               32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47,
+               48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63,
+                0,  2,  4,  6,  8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30,
+               32, 34, 36, 38, 40, 42, 44, 46, 48, 50, 52, 54, 56, 58, 60, 62);
+
+       return 0;
+};
+
+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);
+}
+
+#define my (1 << 7)
+#define mx (1 << 6)
+#define mv (1 << 5)
+static int set_var(struct fbtft_par *par)
+{
+       fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+       /* madctl - memory data access control
+            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, 0x36, mx | my | (par->bgr << 3));
+               break;
+       case 270:
+               write_reg(par, 0x36, my | mv | (par->bgr << 3));
+               break;
+       case 180:
+               write_reg(par, 0x36, (par->bgr << 3));
+               break;
+       case 90:
+               write_reg(par, 0x36, mx | mv | (par->bgr << 3));
+               break;
+       }
+
+       return 0;
+}
+
+/*
+  gamma string format:
+*/
+static int set_gamma(struct fbtft_par *par, unsigned long *curves)
+{
+       fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+       write_reg(par, 0xE0,
+               curves[0], curves[1], curves[2], curves[3],
+               curves[4], curves[5], curves[6], curves[7],
+               curves[8], curves[9], curves[10], curves[11],
+               curves[12], curves[13], curves[14], curves[15],
+               curves[16], curves[17], curves[18]);
+
+       return 0;
+}
+
+
+static struct fbtft_display display = {
+       .regwidth = 8,
+       .width = 128,
+       .height = 160,
+       .gamma_num = 1,
+       .gamma_len = 19,
+       .gamma = DEFAULT_GAMMA,
+       .fbtftops = {
+               .init_display = init_display,
+               .set_addr_win = set_addr_win,
+               .set_var = set_var,
+               .set_gamma = set_gamma,
+       },
+};
+FBTFT_REGISTER_DRIVER(DRVNAME, "himax,hx8353d", &display);
+
+MODULE_ALIAS("spi:" DRVNAME);
+MODULE_ALIAS("platform:" DRVNAME);
+MODULE_ALIAS("spi:hx8353d");
+MODULE_ALIAS("platform:hx8353d");
+
+MODULE_DESCRIPTION("FB driver for the HX8353D LCD Controller");
+MODULE_AUTHOR("Petr Olivka");
+MODULE_LICENSE("GPL");