| /* |
| * Based on drivers/video/omap/lcd_inn1510.c |
| * |
| * LCD panel support for the Amstrad E3 (Delta) videophone. |
| * |
| * Copyright (C) 2006 Jonathan McDowell <noodles@earth.li> |
| * |
| * 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/io.h> |
| #include <linux/delay.h> |
| #include <linux/lcd.h> |
| |
| #include <plat/board-ams-delta.h> |
| #include <mach/hardware.h> |
| |
| #include "omapfb.h" |
| |
| #define AMS_DELTA_DEFAULT_CONTRAST 112 |
| |
| #define AMS_DELTA_MAX_CONTRAST 0x00FF |
| #define AMS_DELTA_LCD_POWER 0x0100 |
| |
| |
| /* LCD class device section */ |
| |
| static int ams_delta_lcd; |
| |
| static int ams_delta_lcd_set_power(struct lcd_device *dev, int power) |
| { |
| if (power == FB_BLANK_UNBLANK) { |
| if (!(ams_delta_lcd & AMS_DELTA_LCD_POWER)) { |
| omap_writeb(ams_delta_lcd & AMS_DELTA_MAX_CONTRAST, |
| OMAP_PWL_ENABLE); |
| omap_writeb(1, OMAP_PWL_CLK_ENABLE); |
| ams_delta_lcd |= AMS_DELTA_LCD_POWER; |
| } |
| } else { |
| if (ams_delta_lcd & AMS_DELTA_LCD_POWER) { |
| omap_writeb(0, OMAP_PWL_ENABLE); |
| omap_writeb(0, OMAP_PWL_CLK_ENABLE); |
| ams_delta_lcd &= ~AMS_DELTA_LCD_POWER; |
| } |
| } |
| return 0; |
| } |
| |
| static int ams_delta_lcd_set_contrast(struct lcd_device *dev, int value) |
| { |
| if ((value >= 0) && (value <= AMS_DELTA_MAX_CONTRAST)) { |
| omap_writeb(value, OMAP_PWL_ENABLE); |
| ams_delta_lcd &= ~AMS_DELTA_MAX_CONTRAST; |
| ams_delta_lcd |= value; |
| } |
| return 0; |
| } |
| |
| #ifdef CONFIG_LCD_CLASS_DEVICE |
| static int ams_delta_lcd_get_power(struct lcd_device *dev) |
| { |
| if (ams_delta_lcd & AMS_DELTA_LCD_POWER) |
| return FB_BLANK_UNBLANK; |
| else |
| return FB_BLANK_POWERDOWN; |
| } |
| |
| static int ams_delta_lcd_get_contrast(struct lcd_device *dev) |
| { |
| if (!(ams_delta_lcd & AMS_DELTA_LCD_POWER)) |
| return 0; |
| |
| return ams_delta_lcd & AMS_DELTA_MAX_CONTRAST; |
| } |
| |
| static struct lcd_ops ams_delta_lcd_ops = { |
| .get_power = ams_delta_lcd_get_power, |
| .set_power = ams_delta_lcd_set_power, |
| .get_contrast = ams_delta_lcd_get_contrast, |
| .set_contrast = ams_delta_lcd_set_contrast, |
| }; |
| #endif |
| |
| |
| /* omapfb panel section */ |
| |
| 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); |
| 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, |
| }; |
| |
| |
| /* platform driver section */ |
| |
| static int ams_delta_panel_probe(struct platform_device *pdev) |
| { |
| struct lcd_device *lcd_device = NULL; |
| #ifdef CONFIG_LCD_CLASS_DEVICE |
| int ret; |
| |
| lcd_device = lcd_device_register("omapfb", &pdev->dev, NULL, |
| &ams_delta_lcd_ops); |
| |
| if (IS_ERR(lcd_device)) { |
| ret = PTR_ERR(lcd_device); |
| dev_err(&pdev->dev, "failed to register device\n"); |
| return ret; |
| } |
| |
| platform_set_drvdata(pdev, lcd_device); |
| lcd_device->props.max_contrast = AMS_DELTA_MAX_CONTRAST; |
| #endif |
| |
| ams_delta_lcd_set_contrast(lcd_device, AMS_DELTA_DEFAULT_CONTRAST); |
| ams_delta_lcd_set_power(lcd_device, FB_BLANK_UNBLANK); |
| |
| 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; |
| } |
| |
| static 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 __init ams_delta_panel_drv_init(void) |
| { |
| return platform_driver_register(&ams_delta_panel_driver); |
| } |
| |
| static void __exit 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); |