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authorStanley.Miao <stanley.miao@windriver.com>2009-09-22 16:46:52 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-09-23 07:39:49 -0700
commit8fea8844a72f95ef22b108f5dc5c4237019771dd (patch)
treea283441a2b4da09a9e762192d68d471a748c1038 /drivers/video
parentbe481941c6ddfe96e5c17a5d6f077b00e7b7bdf1 (diff)
omapfb: add support for the ZOOM MDK LCD
Add glue to control the OMAP_LDP LCD as a frame buffer device using the existing dispc.c driver under omapfb. Patch updated for mainline kernel. Note that the drivers/video/omap should be updated to pass omap_lcd_config in platform_data. The patch should also be updated to compile if twl4030 is not selected, and eventually to use the regulator framework. Fixed-by: Jarkko Nikula <jarkko.nikula@gmail.com> Fixed-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Stanley.Miao <stanley.miao@windriver.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>
Diffstat (limited to 'drivers/video')
-rw-r--r--drivers/video/omap/Kconfig4
-rw-r--r--drivers/video/omap/Makefile1
-rw-r--r--drivers/video/omap/lcd_ldp.c200
3 files changed, 205 insertions, 0 deletions
diff --git a/drivers/video/omap/Kconfig b/drivers/video/omap/Kconfig
index eb05e0999383..2bffc07f317b 100644
--- a/drivers/video/omap/Kconfig
+++ b/drivers/video/omap/Kconfig
@@ -7,6 +7,10 @@ config FB_OMAP
help
Frame buffer driver for OMAP based boards.
+config FB_OMAP_LCD_VGA
+ bool "Use LCD in VGA mode"
+ depends on MACH_OMAP_3430SDP || MACH_OMAP_LDP
+
choice
depends on FB_OMAP && MACH_OVERO
prompt "Screen resolution"
diff --git a/drivers/video/omap/Makefile b/drivers/video/omap/Makefile
index 0d2996a41b39..b63b198d1f03 100644
--- a/drivers/video/omap/Makefile
+++ b/drivers/video/omap/Makefile
@@ -29,6 +29,7 @@ objs-y$(CONFIG_MACH_OMAP_OSK) += lcd_osk.o
objs-y$(CONFIG_MACH_OMAP_APOLLON) += lcd_apollon.o
objs-y$(CONFIG_MACH_OMAP_2430SDP) += lcd_2430sdp.o
objs-y$(CONFIG_MACH_OMAP_3430SDP) += lcd_2430sdp.o
+objs-y$(CONFIG_MACH_OMAP_LDP) += lcd_ldp.o
objs-y$(CONFIG_MACH_OMAP2EVM) += lcd_omap2evm.o
objs-y$(CONFIG_MACH_OMAP3EVM) += lcd_omap3evm.o
objs-y$(CONFIG_MACH_OMAP3_BEAGLE) += lcd_omap3beagle.o
diff --git a/drivers/video/omap/lcd_ldp.c b/drivers/video/omap/lcd_ldp.c
new file mode 100644
index 000000000000..dbfe8974fb94
--- /dev/null
+++ b/drivers/video/omap/lcd_ldp.c
@@ -0,0 +1,200 @@
+/*
+ * LCD panel support for the TI LDP board
+ *
+ * Copyright (C) 2007 WindRiver
+ * Author: Stanley Miao <stanley.miao@windriver.com>
+ *
+ * Derived from drivers/video/omap/lcd-2430sdp.c
+ *
+ * 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/delay.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_PANEL_BACKLIGHT_GPIO (15 + OMAP_MAX_GPIO_LINES)
+#define LCD_PANEL_ENABLE_GPIO (7 + OMAP_MAX_GPIO_LINES)
+
+#define LCD_PANEL_RESET_GPIO 55
+#define LCD_PANEL_QVGA_GPIO 56
+
+#ifdef CONFIG_FB_OMAP_LCD_VGA
+#define LCD_XRES 480
+#define LCD_YRES 640
+#define LCD_PIXCLOCK_MAX 41700
+#else
+#define LCD_XRES 240
+#define LCD_YRES 320
+#define LCD_PIXCLOCK_MAX 185186
+#endif
+
+#define PM_RECEIVER TWL4030_MODULE_PM_RECEIVER
+#define ENABLE_VAUX2_DEDICATED 0x09
+#define ENABLE_VAUX2_DEV_GRP 0x20
+#define ENABLE_VAUX3_DEDICATED 0x03
+#define ENABLE_VAUX3_DEV_GRP 0x20
+
+#define ENABLE_VPLL2_DEDICATED 0x05
+#define ENABLE_VPLL2_DEV_GRP 0xE0
+#define TWL4030_VPLL2_DEV_GRP 0x33
+#define TWL4030_VPLL2_DEDICATED 0x36
+
+#define t2_out(c, r, v) twl4030_i2c_write_u8(c, r, v)
+
+
+static int ldp_panel_init(struct lcd_panel *panel,
+ struct omapfb_device *fbdev)
+{
+ gpio_request(LCD_PANEL_RESET_GPIO, "lcd reset");
+ gpio_request(LCD_PANEL_QVGA_GPIO, "lcd qvga");
+ gpio_request(LCD_PANEL_ENABLE_GPIO, "lcd panel");
+ gpio_request(LCD_PANEL_BACKLIGHT_GPIO, "lcd backlight");
+
+ gpio_direction_output(LCD_PANEL_QVGA_GPIO, 0);
+ gpio_direction_output(LCD_PANEL_RESET_GPIO, 0);
+ gpio_direction_output(LCD_PANEL_ENABLE_GPIO, 0);
+ gpio_direction_output(LCD_PANEL_BACKLIGHT_GPIO, 0);
+
+#ifdef CONFIG_FB_OMAP_LCD_VGA
+ gpio_set_value(LCD_PANEL_QVGA_GPIO, 0);
+#else
+ gpio_set_value(LCD_PANEL_QVGA_GPIO, 1);
+#endif
+ gpio_set_value(LCD_PANEL_RESET_GPIO, 1);
+
+ return 0;
+}
+
+static void ldp_panel_cleanup(struct lcd_panel *panel)
+{
+ gpio_free(LCD_PANEL_BACKLIGHT_GPIO);
+ gpio_free(LCD_PANEL_ENABLE_GPIO);
+ gpio_free(LCD_PANEL_QVGA_GPIO);
+ gpio_free(LCD_PANEL_RESET_GPIO);
+}
+
+static int ldp_panel_enable(struct lcd_panel *panel)
+{
+ if (0 != t2_out(PM_RECEIVER, ENABLE_VPLL2_DEDICATED,
+ TWL4030_VPLL2_DEDICATED))
+ return -EIO;
+ if (0 != t2_out(PM_RECEIVER, ENABLE_VPLL2_DEV_GRP,
+ TWL4030_VPLL2_DEV_GRP))
+ return -EIO;
+
+ gpio_direction_output(LCD_PANEL_ENABLE_GPIO, 1);
+ gpio_direction_output(LCD_PANEL_BACKLIGHT_GPIO, 1);
+
+ if (0 != t2_out(PM_RECEIVER, ENABLE_VAUX3_DEDICATED,
+ TWL4030_VAUX3_DEDICATED))
+ return -EIO;
+ if (0 != t2_out(PM_RECEIVER, ENABLE_VAUX3_DEV_GRP,
+ TWL4030_VAUX3_DEV_GRP))
+ return -EIO;
+
+ return 0;
+}
+
+static void ldp_panel_disable(struct lcd_panel *panel)
+{
+ gpio_direction_output(LCD_PANEL_ENABLE_GPIO, 0);
+ gpio_direction_output(LCD_PANEL_BACKLIGHT_GPIO, 0);
+
+ t2_out(PM_RECEIVER, 0x0, TWL4030_VPLL2_DEDICATED);
+ t2_out(PM_RECEIVER, 0x0, TWL4030_VPLL2_DEV_GRP);
+ msleep(4);
+}
+
+static unsigned long ldp_panel_get_caps(struct lcd_panel *panel)
+{
+ return 0;
+}
+
+struct lcd_panel ldp_panel = {
+ .name = "ldp",
+ .config = OMAP_LCDC_PANEL_TFT | OMAP_LCDC_INV_VSYNC |
+ OMAP_LCDC_INV_HSYNC,
+
+ .bpp = 16,
+ .data_lines = 18,
+ .x_res = LCD_XRES,
+ .y_res = LCD_YRES,
+ .hsw = 3, /* hsync_len (4) - 1 */
+ .hfp = 3, /* right_margin (4) - 1 */
+ .hbp = 39, /* left_margin (40) - 1 */
+ .vsw = 1, /* vsync_len (2) - 1 */
+ .vfp = 2, /* lower_margin */
+ .vbp = 7, /* upper_margin (8) - 1 */
+
+ .pixel_clock = LCD_PIXCLOCK_MAX,
+
+ .init = ldp_panel_init,
+ .cleanup = ldp_panel_cleanup,
+ .enable = ldp_panel_enable,
+ .disable = ldp_panel_disable,
+ .get_caps = ldp_panel_get_caps,
+};
+
+static int ldp_panel_probe(struct platform_device *pdev)
+{
+ omapfb_register_panel(&ldp_panel);
+ return 0;
+}
+
+static int ldp_panel_remove(struct platform_device *pdev)
+{
+ return 0;
+}
+
+static int ldp_panel_suspend(struct platform_device *pdev, pm_message_t mesg)
+{
+ return 0;
+}
+
+static int ldp_panel_resume(struct platform_device *pdev)
+{
+ return 0;
+}
+
+struct platform_driver ldp_panel_driver = {
+ .probe = ldp_panel_probe,
+ .remove = ldp_panel_remove,
+ .suspend = ldp_panel_suspend,
+ .resume = ldp_panel_resume,
+ .driver = {
+ .name = "ldp_lcd",
+ .owner = THIS_MODULE,
+ },
+};
+
+static int __init ldp_panel_drv_init(void)
+{
+ return platform_driver_register(&ldp_panel_driver);
+}
+
+static void __exit ldp_panel_drv_exit(void)
+{
+ platform_driver_unregister(&ldp_panel_driver);
+}
+
+module_init(ldp_panel_drv_init);
+module_exit(ldp_panel_drv_exit);