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ARM: OMAP: omapfb: Add Amstrad Delta LCD driver.

PATCH New Jonathan McDowell 1 participant 1 message Jul 8, 2006 Framebuffer layer

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PATCH 1/1 ARM: OMAP: omapfb: Add Amstrad Delta LCD driver.

This is an updated version of the LCD driver for the Amstrad Delta to take into account the recent changes to the omapfb infrastructure. The Delta features a 480x320 12 bit DSTN panel.

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drivers/video/omap/lcd_ams_delta.c +140 -0
diff -ruNp linux-2.6.17-e3-03/drivers/video/omap/lcd_ams_delta.c linux-2.6.17-e3-04/drivers/video/omap/lcd_ams_delta.c
@@ -0,0 +1,140 @@
+/*
+ * File: drivers/video/omap/lcd_ams_delta.c
+ *
+ * Based on drivers/video/omap/lcd_inn1510.c
+ *
+ * LCD panel support for the Amstrad E3 (Delta) videophone.
+ *
+ * Copyright (C) 2006 Jonathan McDowell <[email protected]>
+ *
+ * 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 <asm/delay.h>
+#include <asm/io.h>
+
+#include <asm/arch/board-ams-delta.h>
+#include <asm/arch/omap16xx.h>
+#include <asm/arch/omapfb.h>
+
+#define AMS_DELTA_DEFAULT_CONTRAST	112
+
+static int ams_delta_panel_init(struct lcd_panel *panel,
+		struct omapfb_device *fbdev)
+{
+	return 0;
+}
+
+static void ams_delta_panel_cleanup(struct lcd_panel *panel)
+{
+}
+
+static int ams_delta_panel_enable(struct lcd_panel *panel)
+{
+	ams_delta_latch2_write(AMS_DELTA_LATCH2_LCD_NDISP,
+			AMS_DELTA_LATCH2_LCD_NDISP);
+	ams_delta_latch2_write(AMS_DELTA_LATCH2_LCD_VBLEN,
+			AMS_DELTA_LATCH2_LCD_VBLEN);
+
+	omap_writeb(1, OMAP16XX_PWL_CLK_ENABLE);
+	omap_writeb(AMS_DELTA_DEFAULT_CONTRAST, OMAP16XX_PWL_ENABLE);
+
+	return 0;
+}
+
+static void ams_delta_panel_disable(struct lcd_panel *panel)
+{
+	ams_delta_latch2_write(AMS_DELTA_LATCH2_LCD_VBLEN, 0);
+	ams_delta_latch2_write(AMS_DELTA_LATCH2_LCD_NDISP, 0);
+}
+
+static unsigned long ams_delta_panel_get_caps(struct lcd_panel *panel)
+{
+	return 0;
+}
+
+static struct lcd_panel ams_delta_panel = {
+	.name		= "ams-delta",
+	.config		= 0,
+
+	.bpp		= 12,
+	.data_lines	= 16,
+	.x_res		= 480,
+	.y_res		= 320,
+	.pixel_clock	= 4687,
+	.hsw		= 3,
+	.hfp		= 1,
+	.hbp		= 1,
+	.vsw		= 1,
+	.vfp		= 0,
+	.vbp		= 0,
+	.pcd		= 0,
+	.acb		= 37,
+
+	.init		= ams_delta_panel_init,
+	.cleanup	= ams_delta_panel_cleanup,
+	.enable		= ams_delta_panel_enable,
+	.disable	= ams_delta_panel_disable,
+	.get_caps	= ams_delta_panel_get_caps,
+};
+
+static int ams_delta_panel_probe(struct platform_device *pdev)
+{
+	omapfb_register_panel(&ams_delta_panel);
+	return 0;
+}
+
+static int ams_delta_panel_remove(struct platform_device *pdev)
+{
+	return 0;
+}
+
+static int ams_delta_panel_suspend(struct platform_device *pdev,
+		pm_message_t mesg)
+{
+	return 0;
+}
+
+static int ams_delta_panel_resume(struct platform_device *pdev)
+{
+	return 0;
+}
+
+struct platform_driver ams_delta_panel_driver = {
+	.probe		= ams_delta_panel_probe,
+	.remove		= ams_delta_panel_remove,
+	.suspend	= ams_delta_panel_suspend,
+	.resume		= ams_delta_panel_resume,
+	.driver		= {
+		.name	= "lcd_ams_delta",
+		.owner	= THIS_MODULE,
+	},
+};
+
+static int ams_delta_panel_drv_init(void)
+{
+	return platform_driver_register(&ams_delta_panel_driver);
+}
+
+static void ams_delta_panel_drv_cleanup(void)
+{
+	platform_driver_unregister(&ams_delta_panel_driver);
+}
+
+module_init(ams_delta_panel_drv_init);
+module_exit(ams_delta_panel_drv_cleanup);
drivers/video/omap/lcdc.c +2 -0
diff -ruNp linux-2.6.17-e3-03/drivers/video/omap/lcdc.c linux-2.6.17-e3-04/drivers/video/omap/lcdc.c
@@ -809,6 +809,8 @@ static int omap_lcdc_init(struct omapfb_
 	rate = clk_get_rate(tc_ck);
 	clk_put(tc_ck);
 
+	if (machine_is_ams_delta())
+		rate /= 4;
 	if (machine_is_omap_h3())
 		rate /= 3;
 	r = clk_set_rate(lcdc.lcd_ck, rate);
drivers/video/omap/Makefile +1 -0
diff -ruNp linux-2.6.17-e3-03/drivers/video/omap/Makefile linux-2.6.17-e3-04/drivers/video/omap/Makefile
@@ -14,6 +14,7 @@ objs-$(CONFIG_ARCH_OMAP2)$(CONFIG_FB_OMA
 
 objs-y$(CONFIG_FB_OMAP_LCDC_HWA742) += hwa742.o
 
+objs-y$(CONFIG_MACH_AMS_DELTA) += lcd_ams_delta.o
 objs-y$(CONFIG_MACH_OMAP_H4) += lcd_h4.o
 objs-y$(CONFIG_MACH_OMAP_H3) += lcd_h3.o
 objs-y$(CONFIG_MACH_OMAP_H2) += lcd_h2.o

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J.

Signature · 1 line
Revd. Jonathan McDowell, ULC | It does it for me our kid!