drivers/video/omap/lcd_osk.c

   1 /*
   2  * LCD panel support for the TI OMAP OSK board
   3  *
   4  * Copyright (C) 2004 Nokia Corporation
   5  * Author: Imre Deak <imre.deak@nokia.com>
   6  * Adapted for OSK by <dirk.behme@de.bosch.com>
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of the GNU General Public License as published by the
  10  * Free Software Foundation; either version 2 of the License, or (at your
  11  * option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful, but
  14  * WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License along
  19  * with this program; if not, write to the Free Software Foundation, Inc.,
  20  * 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  21  */
  22
  23 #include <linux/module.h>
  24 #include <linux/platform_device.h>
  25
  26 #include <asm/arch/gpio.h>
  27 #include <asm/arch/mux.h>
  28 #include <asm/arch/omapfb.h>
  29
  30 static int osk_panel_init(struct lcd_panel *panel, struct omapfb_device *fbdev)
  31 {
  32         return 0;
  33 }
  34
  35 static void osk_panel_cleanup(struct lcd_panel *panel)
  36 {
  37 }
  38
  39 static int osk_panel_enable(struct lcd_panel *panel)
  40 {
  41         /* configure PWL pin */
  42         omap_cfg_reg(PWL);
  43
  44         /* Enable PWL unit */
  45         omap_writeb(0x01, OMAP_PWL_CLK_ENABLE);
  46
  47         /* Set PWL level */
  48         omap_writeb(0xFF, OMAP_PWL_ENABLE);
  49
  50         /* configure GPIO2 as output */
  51         omap_set_gpio_direction(2, 0);
  52
  53         /* set GPIO2 high */
  54         omap_set_gpio_dataout(2, 1);
  55
  56         return 0;
  57 }
  58
  59 static void osk_panel_disable(struct lcd_panel *panel)
  60 {
  61         /* Set PWL level to zero */
  62         omap_writeb(0x00, OMAP_PWL_ENABLE);
  63
  64         /* Disable PWL unit */
  65         omap_writeb(0x00, OMAP_PWL_CLK_ENABLE);
  66
  67         /* set GPIO2 low */
  68         omap_set_gpio_dataout(2, 0);
  69 }
  70
  71 static unsigned long osk_panel_get_caps(struct lcd_panel *panel)
  72 {
  73         return 0;
  74 }
  75
  76 struct lcd_panel osk_panel = {
  77         .name           = "osk",
  78         .config         = OMAP_LCDC_PANEL_TFT,
  79
  80         .bpp            = 16,
  81         .data_lines     = 16,
  82         .x_res          = 240,
  83         .y_res          = 320,
  84         .pixel_clock    = 12500,
  85         .hsw            = 40,
  86         .hfp            = 40,
  87         .hbp            = 72,
  88         .vsw            = 1,
  89         .vfp            = 1,
  90         .vbp            = 0,
  91         .pcd            = 12,
  92
  93         .init           = osk_panel_init,
  94         .cleanup        = osk_panel_cleanup,
  95         .enable         = osk_panel_enable,
  96         .disable        = osk_panel_disable,
  97         .get_caps       = osk_panel_get_caps,
  98 };
  99
 100 static int osk_panel_probe(struct platform_device *pdev)
 101 {
 102         omapfb_register_panel(&osk_panel);
 103         return 0;
 104 }
 105
 106 static int osk_panel_remove(struct platform_device *pdev)
 107 {
 108         return 0;
 109 }
 110
 111 static int osk_panel_suspend(struct platform_device *pdev, pm_message_t mesg)
 112 {
 113         return 0;
 114 }
 115
 116 static int osk_panel_resume(struct platform_device *pdev)
 117 {
 118         return 0;
 119 }
 120
 121 struct platform_driver osk_panel_driver = {
 122         .probe          = osk_panel_probe,
 123         .remove         = osk_panel_remove,
 124         .suspend        = osk_panel_suspend,
 125         .resume         = osk_panel_resume,
 126         .driver         = {
 127                 .name   = "lcd_osk",
 128                 .owner  = THIS_MODULE,
 129         },
 130 };
 131
 132 static int osk_panel_drv_init(void)
 133 {
 134         return platform_driver_register(&osk_panel_driver);
 135 }
 136
 137 static void osk_panel_drv_cleanup(void)
 138 {
 139         platform_driver_unregister(&osk_panel_driver);
 140 }
 141
 142 module_init(osk_panel_drv_init);
 143 module_exit(osk_panel_drv_cleanup);
 144