omapfb: add support for the Gumstix Overo LCD

Signed-off-by: Steve Sakoman <steve@sakoman.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Imre Deak <imre.deak@nokia.com>
Acked-by: Krzysztof Helt <krzysztof.h1@wp.pl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

3 files changed, 201 insertions, 0 deletions

diff --git a/drivers/video/omap/Kconfig b/drivers/video/omap/Kconfig
index 574453f49e2b..eb05e0999383 100644
--- a/drivers/video/omap/Kconfig
+++ b/drivers/video/omap/Kconfig
@@ -7,6 +7,27 @@ config FB_OMAP
         help
           Frame buffer driver for OMAP based boards.
 
+choice
+        depends on FB_OMAP && MACH_OVERO
+        prompt "Screen resolution"
+        default FB_OMAP_079M3R
+        help
+          Selected desired screen resolution
+
+config FB_OMAP_031M3R
+        boolean "640 x 480 @ 60 Hz Reduced blanking"
+
+config FB_OMAP_048M3R
+        boolean "800 x 600 @ 60 Hz Reduced blanking"
+
+config FB_OMAP_079M3R
+        boolean "1024 x 768 @ 60 Hz Reduced blanking"
+
+config FB_OMAP_092M9R
+        boolean "1280 x 720 @ 60 Hz Reduced blanking"
+
+endchoice
+
 config FB_OMAP_LCD_MIPID
         bool "MIPI DBI-C/DCS compatible LCD support"
         depends on FB_OMAP && SPI_MASTER
diff --git a/drivers/video/omap/Makefile b/drivers/video/omap/Makefile
index 9ff1815bed67..0d2996a41b39 100644
--- a/drivers/video/omap/Makefile
+++ b/drivers/video/omap/Makefile
@@ -33,6 +33,7 @@ objs-y$(CONFIG_MACH_OMAP2EVM) += lcd_omap2evm.o
 objs-y$(CONFIG_MACH_OMAP3EVM) += lcd_omap3evm.o
 objs-y$(CONFIG_MACH_OMAP3_BEAGLE) += lcd_omap3beagle.o
 objs-y$(CONFIG_FB_OMAP_LCD_MIPID) += lcd_mipid.o
+objs-y$(CONFIG_MACH_OVERO) += lcd_overo.o
 
 omapfb-objs := $(objs-yy)
 
diff --git a/drivers/video/omap/lcd_overo.c b/drivers/video/omap/lcd_overo.c
new file mode 100644
index 000000000000..2bc5c9268e5e
--- /dev/null
+++ b/drivers/video/omap/lcd_overo.c
@@ -0,0 +1,179 @@
+/*
+ * LCD panel support for the Gumstix Overo
+ *
+ * Author: Steve Sakoman <steve@sakoman.com>
+ *
+ * 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.,
+ * 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/i2c/twl4030.h>
+
+#include <mach/gpio.h>
+#include <mach/mux.h>
+#include <mach/omapfb.h>
+#include <asm/mach-types.h>
+
+#define LCD_ENABLE       144
+
+static int overo_panel_init(struct lcd_panel *panel,
+                                struct omapfb_device *fbdev)
+{
+        if ((gpio_request(LCD_ENABLE, "LCD_ENABLE") == 0) &&
+            (gpio_direction_output(LCD_ENABLE, 1) == 0))
+                gpio_export(LCD_ENABLE, 0);
+        else
+                printk(KERN_ERR "could not obtain gpio for LCD_ENABLE\n");
+
+        return 0;
+}
+
+static void overo_panel_cleanup(struct lcd_panel *panel)
+{
+        gpio_free(LCD_ENABLE);
+}
+
+static int overo_panel_enable(struct lcd_panel *panel)
+{
+        gpio_set_value(LCD_ENABLE, 1);
+        return 0;
+}
+
+static void overo_panel_disable(struct lcd_panel *panel)
+{
+        gpio_set_value(LCD_ENABLE, 0);
+}
+
+static unsigned long overo_panel_get_caps(struct lcd_panel *panel)
+{
+        return 0;
+}
+
+struct lcd_panel overo_panel = {
+        .name           = "overo",
+        .config         = OMAP_LCDC_PANEL_TFT,
+        .bpp            = 16,
+        .data_lines     = 24,
+
+#if defined CONFIG_FB_OMAP_031M3R
+
+        /* 640 x 480 @ 60 Hz  Reduced blanking VESA CVT 0.31M3-R */
+        .x_res          = 640,
+        .y_res          = 480,
+        .hfp            = 48,
+        .hsw            = 32,
+        .hbp            = 80,
+        .vfp            = 3,
+        .vsw            = 4,
+        .vbp            = 7,
+        .pixel_clock    = 23500,
+
+#elif defined CONFIG_FB_OMAP_048M3R
+
+        /* 800 x 600 @ 60 Hz  Reduced blanking VESA CVT 0.48M3-R */
+        .x_res          = 800,
+        .y_res          = 600,
+        .hfp            = 48,
+        .hsw            = 32,
+        .hbp            = 80,
+        .vfp            = 3,
+        .vsw            = 4,
+        .vbp            = 11,
+        .pixel_clock    = 35500,
+
+#elif defined CONFIG_FB_OMAP_079M3R
+
+        /* 1024 x 768 @ 60 Hz  Reduced blanking VESA CVT 0.79M3-R */
+        .x_res          = 1024,
+        .y_res          = 768,
+        .hfp            = 48,
+        .hsw            = 32,
+        .hbp            = 80,
+        .vfp            = 3,
+        .vsw            = 4,
+        .vbp            = 15,
+        .pixel_clock    = 56000,
+
+#elif defined CONFIG_FB_OMAP_092M9R
+
+        /* 1280 x 720 @ 60 Hz  Reduced blanking VESA CVT 0.92M9-R */
+        .x_res          = 1280,
+        .y_res          = 720,
+        .hfp            = 48,
+        .hsw            = 32,
+        .hbp            = 80,
+        .vfp            = 3,
+        .vsw            = 5,
+        .vbp            = 13,
+        .pixel_clock    = 64000,
+
+#else
+
+        /* use 640 x 480 if no config option */
+        /* 640 x 480 @ 60 Hz  Reduced blanking VESA CVT 0.31M3-R */
+        .x_res          = 640,
+        .y_res          = 480,
+        .hfp            = 48,
+        .hsw            = 32,
+        .hbp            = 80,
+        .vfp            = 3,
+        .vsw            = 4,
+        .vbp            = 7,
+        .pixel_clock    = 23500,
+
+#endif
+
+        .init           = overo_panel_init,
+        .cleanup        = overo_panel_cleanup,
+        .enable         = overo_panel_enable,
+        .disable        = overo_panel_disable,
+        .get_caps       = overo_panel_get_caps,
+};
+
+static int overo_panel_probe(struct platform_device *pdev)
+{
+        omapfb_register_panel(&overo_panel);
+        return 0;
+}
+
+static int overo_panel_remove(struct platform_device *pdev)
+{
+        /* omapfb does not have unregister_panel */
+        return 0;
+}
+
+static struct platform_driver overo_panel_driver = {
+        .probe          = overo_panel_probe,
+        .remove         = overo_panel_remove,
+        .driver         = {
+                .name   = "overo_lcd",
+                .owner  = THIS_MODULE,
+        },
+};
+
+static int __init overo_panel_drv_init(void)
+{
+        return platform_driver_register(&overo_panel_driver);
+}
+
+static void __exit overo_panel_drv_exit(void)
+{
+        platform_driver_unregister(&overo_panel_driver);
+}
+
+module_init(overo_panel_drv_init);
+module_exit(overo_panel_drv_exit);