drivers/video/omap/lcd_p2.c

   1 /*
   2  * LCD panel support for the TI OMAP P2 board
   3  *
   4  * Authors:
   5  *   jekyll <jekyll@mail.jekyll.idv.tw>
   6  *   B Jp <lastjp_fr@yahoo.fr>
   7  *   Brian Swetland <swetland@android.com>
   8  *
   9  * This program is free software; you can redistribute it and/or modify it
  10  * under the terms of the GNU General Public License as published by the
  11  * Free Software Foundation; either version 2 of the License, or (at your
  12  * option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful, but
  15  * WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License along
  20  * with this program; if not, write to the Free Software Foundation, Inc.,
  21  * 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  22  */
  23
  24 #include <linux/module.h>
  25 #include <linux/delay.h>
  26 #include <linux/platform_device.h>
  27
  28 #include <mach/mux.h>
  29 #include <mach/gpio.h>
  30 #include <mach/omapfb.h>
  31
  32 /*
  33  * File: epson-md-tft.h
  34  *
  35  * This file contains definitions for Epsons MD-TF LCD Module
  36  *
  37  * Copyright (C) 2004 MPC-Data Limited  (http://www.mpc-data.co.uk)
  38  * Author: Dave Peverley <dpeverley at mpc-data.co.uk>
  39  *
  40  *  This program is free software; you can redistribute  it and/or modify it
  41  *  under  the terms of  the GNU General  Public License as published by the
  42  *  Free Software Foundation;  either version 2 of the  License, or (at your
  43  *  option) any later version.
  44  *
  45  *  THIS  SOFTWARE  IS  PROVIDED  ``AS  IS''  AND   ANY  EXPRESS  OR IMPLIED
  46  *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
  47  *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
  48  *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT,  INDIRECT,
  49  *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  50  *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
  51  *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
  52  *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
  53  *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  54  *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  55  *
  56  *  You should have received a copy of the  GNU General Public License along
  57  *  with this program; if not, write  to the Free Software Foundation, Inc.,
  58  *  675 Mass Ave, Cambridge, MA 02139, USA.
  59  *
  60  * Please report all bugs and problems to the author.
  61  *
  62  */
  63
  64 /* LCD uWire commands & params
  65  * All values from Epson
  66  */
  67 #define LCD_DISON 0xAF
  68 #define LCD_DISOFF 0xAE
  69 #define LCD_DISNOR 0xA6
  70 #define LCD_DISINV 0xA7
  71 #define LCD_DISCTL 0xCA
  72 #define LCD_GCP64 0xCB
  73 #define LCD_GCP16 0xCC
  74 #define LCD_GSSET 0xCD
  75 #define LCD_SLPIN 0x95
  76 #define LCD_SLPOUT 0x94
  77 #define LCD_SD_PSET 0x75
  78 #define LCD_MD_PSET 0x76
  79 #define LCD_SD_CSET 0x15
  80 #define LCD_MD_CSET 0x16
  81 #define LCD_DATCTL 0xBC
  82 #define LCD_RAMWR 0x5C
  83 #define LCD_RAMRD 0x5D
  84 #define LCD_PTLIN 0xA8
  85 #define LCD_PTLOUT 0xA9
  86 #define LCD_ASCSET 0xAA
  87 #define LCD_SCSTART 0xAB
  88 #define LCD_VOLCTL 0xC6
  89 #define LCD_NOP 0x25
  90 #define LCD_OSCISEL 0x7
  91 #define LCD_3500KSET 0xD1
  92 #define LCD_3500KEND 0xD2
  93 #define LCD_14MSET 0xD3
  94 #define LCD_14MEND 0xD4
  95
  96 #define INIT_3500KSET 0x45
  97 #define INIT_14MSET 0x4B
  98 #define INIT_DATCTL 0x08 /* 6.6.6 bits for D-Sample */
  99
 100 #define INIT_OSCISEL 0x05
 101
 102 #define INIT_VOLCTL 0x77 /* Nominel "volume" */
 103
 104 #define INIT_VOLCTL_Ton 0x98 /* Activate power-IC timer */
 105 #define INIT_GSSET 0x00
 106
 107 const unsigned short INIT_DISCTL[11] =
 108 {
 109         0xDE, 0x01, 0x64, 0x00, 0x1B, 0xF4, 0x00, 0xDC, 0x00, 0x02, 0x00
 110 };
 111
 112 const unsigned short INIT_GCP64[126] =
 113 {
 114         0x3B,0x00,0x42,0x00,0x4A,0x00,0x51,0x00,
 115         0x58,0x00,0x5F,0x00,0x66,0x00,0x6E,0x00,
 116         0x75,0x00,0x7C,0x00,0x83,0x00,0x8A,0x00,
 117         0x92,0x00,0x99,0x00,0xA0,0x00,0xA7,0x00,
 118         0xAE,0x00,0xB6,0x00,0xBD,0x00,0xC4,0x00,
 119         0xCB,0x00,0xD2,0x00,0xDA,0x00,0xE1,0x00,
 120         0xE8,0x00,0xEF,0x00,0xF6,0x00,0xFE,0x00,
 121         0x05,0x01,0x0C,0x01,0x13,0x01,0x1A,0x01,
 122         0x22,0x01,0x29,0x01,0x30,0x01,0x37,0x01,
 123         0x3E,0x01,0x46,0x01,0x4D,0x01,0x54,0x01,
 124         0x5B,0x01,0x62,0x01,0x6A,0x01,0x71,0x01,
 125         0x78,0x01,0x7F,0x01,0x86,0x01,0x8E,0x01,
 126         0x95,0x01,0x9C,0x01,0xA3,0x01,0xAA,0x01,
 127         0xB2,0x01,0xB9,0x01,0xC0,0x01,0xC7,0x01,
 128         0xCE,0x01,0xD6,0x01,0xDD,0x01,0xE4,0x01,
 129         0xEB,0x01,0xF2,0x01,0xFA,0x01
 130 };
 131
 132 const unsigned short INIT_GCP16[15] =
 133 {
 134         0x1A,0x31,0x48,0x54,0x5F,0x67,0x70,0x76,0x7C,0x80,0x83,0x84,0x85,0x87,0x96
 135 };
 136
 137 const unsigned short INIT_MD_PSET[4] = { 0, 0, 219, 0 };
 138 const unsigned short INIT_MD_CSET[4] = { 2, 0, 177, 0 };
 139
 140 const unsigned short INIT_SD_PSET[4] = { 0x00, 0x01, 0x00, 0x01 };
 141 const unsigned short INIT_SD_CSET[4] = { 0x00, 0x02, 0x00, 0x02 };
 142
 143 const unsigned short INIT_ASCSET[7] = { 0x00, 0x00, 0xDB, 0x00, 0xDC, 0x00, 0x01 };
 144 const unsigned short INIT_SCSTART[2] = { 0x00, 0x00 };
 145
 146 /* ----- end of epson_md_tft.h ----- */
 147
 148
 149 #include "../drivers/ssi/omap-uwire.h"
 150
 151 #define LCD_UWIRE_CS 0
 152
 153 static int p2_panel_init(struct lcd_panel *panel, struct omapfb_device *fbdev)
 154 {
 155         return 0;
 156 }
 157
 158 static void p2_panel_cleanup(struct lcd_panel *panel)
 159 {
 160 }
 161
 162 static int p2_panel_enable(struct lcd_panel *panel)
 163 {
 164         int i;
 165         unsigned long value;
 166
 167                 /* thwack the reset line */
 168         gpio_direction_output(19, 0);
 169         mdelay(2);
 170         gpio_set_value(19, 1);
 171
 172                 /* bits 31:28 -> 0  LCD_PXL_15 .. 12 */
 173         value = omap_readl(OMAP730_IO_CONF_3) & 0x0FFFFFFF;
 174         omap_writel(value, OMAP730_IO_CONF_3);
 175
 176                 /* bits 19:0 -> 0  LCD_VSYNC, AC, PXL_0, PCLK, HSYNC,
 177                 **                 PXL_9..1, PXL_10, PXL_11
 178                 */
 179         value = omap_readl(OMAP730_IO_CONF_4) & 0xFFF00000;
 180         omap_writel(value, OMAP730_IO_CONF_4);
 181
 182         omap_uwire_configure_mode(0,16);
 183
 184         omap_uwire_data_transfer(LCD_UWIRE_CS, LCD_DISOFF, 9, 0,NULL,1);
 185         omap_uwire_data_transfer(LCD_UWIRE_CS, LCD_SLPIN, 9, 0,NULL,1);
 186         omap_uwire_data_transfer(LCD_UWIRE_CS, LCD_DISNOR, 9, 0,NULL,1);
 187         omap_uwire_data_transfer(LCD_UWIRE_CS, LCD_GSSET, 9, 0,NULL,1);
 188         omap_uwire_data_transfer(LCD_UWIRE_CS, (INIT_GSSET | 0x100), 9, 0,NULL,1);
 189
 190         /* DISCTL */
 191         omap_uwire_data_transfer(LCD_UWIRE_CS, LCD_DISCTL, 9, 0,NULL,1);
 192         for (i = 0; i < (sizeof(INIT_DISCTL)/sizeof(unsigned short)); i++)
 193                 omap_uwire_data_transfer(LCD_UWIRE_CS, (INIT_DISCTL[i] | 0x100), 9, 0,NULL,1);
 194
 195         /* GCP64 */
 196         omap_uwire_data_transfer(LCD_UWIRE_CS, LCD_GCP64, 9, 0,NULL,1);
 197         for (i = 0; i < (sizeof(INIT_GCP64)/sizeof(unsigned short)); i++)
 198                 omap_uwire_data_transfer(LCD_UWIRE_CS, (INIT_GCP64[i] | 0x100), 9, 0,NULL,1);
 199
 200         /* GCP16 */
 201         omap_uwire_data_transfer(LCD_UWIRE_CS, LCD_GCP16, 9, 0,NULL,1);
 202         for (i = 0; i < (sizeof(INIT_GCP16)/sizeof(unsigned short)); i++)
 203                 omap_uwire_data_transfer(LCD_UWIRE_CS, (INIT_GCP16[i] | 0x100), 9, 0,NULL,1);
 204
 205         /* MD_CSET */
 206         omap_uwire_data_transfer(LCD_UWIRE_CS, LCD_MD_CSET, 9, 0,NULL,1);
 207         for (i = 0; i < (sizeof(INIT_MD_CSET)/sizeof(unsigned short)); i++)
 208                 omap_uwire_data_transfer(LCD_UWIRE_CS, (INIT_MD_CSET[i] | 0x100), 9, 0,NULL,1);
 209
 210         /* MD_PSET */
 211         omap_uwire_data_transfer(LCD_UWIRE_CS, LCD_MD_PSET, 9, 0,NULL,1);
 212         for (i = 0; i < (sizeof(INIT_MD_PSET)/sizeof(unsigned short)); i++)
 213                 omap_uwire_data_transfer(LCD_UWIRE_CS, (INIT_MD_PSET[i] | 0x100), 9, 0,NULL,1);
 214
 215         /* SD_CSET */
 216         omap_uwire_data_transfer(LCD_UWIRE_CS, LCD_SD_CSET, 9, 0,NULL,1);
 217         for (i = 0; i < (sizeof(INIT_SD_CSET)/sizeof(unsigned short)); i++)
 218                 omap_uwire_data_transfer(LCD_UWIRE_CS, (INIT_SD_CSET[i] | 0x100), 9, 0,NULL,1);
 219
 220         /* SD_PSET */
 221         omap_uwire_data_transfer(LCD_UWIRE_CS, LCD_SD_PSET, 9, 0,NULL,1);
 222         for (i = 0; i < (sizeof(INIT_SD_PSET)/sizeof(unsigned short)); i++)
 223                 omap_uwire_data_transfer(LCD_UWIRE_CS, (INIT_SD_PSET[i] | 0x100), 9, 0,NULL,1);
 224
 225         /* DATCTL */
 226         omap_uwire_data_transfer(LCD_UWIRE_CS, LCD_DATCTL, 9, 0,NULL,1);
 227         omap_uwire_data_transfer(LCD_UWIRE_CS, (INIT_DATCTL | 0x100), 9, 0,NULL,1);
 228
 229         /* OSSISEL = d'5 */
 230         omap_uwire_data_transfer(LCD_UWIRE_CS, LCD_OSCISEL, 9, 0,NULL,1);
 231         omap_uwire_data_transfer(LCD_UWIRE_CS, (INIT_OSCISEL | 0x100), 9, 0,NULL,1);
 232
 233         /* 14MSET = d'74 */
 234         omap_uwire_data_transfer(LCD_UWIRE_CS, LCD_14MSET, 9, 0,NULL,1);
 235         omap_uwire_data_transfer(LCD_UWIRE_CS, (INIT_14MSET | 0x100), 9, 0,NULL,1);
 236
 237         /* 14MEND */
 238         omap_uwire_data_transfer(LCD_UWIRE_CS, LCD_14MEND, 9, 0,NULL,1);
 239
 240         /* 3500KSET = d'69 */
 241         omap_uwire_data_transfer(LCD_UWIRE_CS, LCD_3500KSET, 9, 0,NULL,1);
 242         omap_uwire_data_transfer(LCD_UWIRE_CS, (INIT_3500KSET | 0x100), 9, 0,NULL,1);
 243
 244         /* 3500KEND */
 245         omap_uwire_data_transfer(LCD_UWIRE_CS, LCD_3500KEND, 9, 0,NULL,1);
 246
 247         omap_uwire_data_transfer(LCD_UWIRE_CS, LCD_SLPOUT, 9, 0,NULL,1);
 248
 249         omap_uwire_data_transfer(LCD_UWIRE_CS, LCD_VOLCTL, 9, 0,NULL,1);
 250         omap_uwire_data_transfer(LCD_UWIRE_CS, (INIT_VOLCTL_Ton | 0x100), 9, 0,NULL,1);
 251
 252         omap_uwire_data_transfer(LCD_UWIRE_CS, LCD_VOLCTL, 9, 0,NULL,1);
 253
 254         omap_uwire_data_transfer(LCD_UWIRE_CS, (INIT_VOLCTL | 0x100), 9, 0,NULL,1);
 255
 256         omap_uwire_data_transfer(LCD_UWIRE_CS, LCD_DISON, 9, 0,NULL,1);
 257
 258         /* enable backlight */
 259         gpio_direction_output(134, 1);
 260
 261         return 0;
 262 }
 263
 264 static void p2_panel_disable(struct lcd_panel *panel)
 265 {
 266 }
 267
 268 static unsigned long p2_panel_get_caps(struct lcd_panel *panel)
 269 {
 270         return 0;
 271 }
 272
 273 struct lcd_panel p2_panel = {
 274         .name           = "p2",
 275         .config         = OMAP_LCDC_PANEL_TFT | OMAP_LCDC_INV_PIX_CLOCK,
 276
 277         .bpp            = 16,
 278         .data_lines     = 16,
 279         .x_res          = 176,
 280         .y_res          = 220,
 281         .pixel_clock    = 12500,
 282         .hsw            = 5,
 283         .hfp            = 1,
 284         .hbp            = 1,
 285         .vsw            = 2,
 286         .vfp            = 12,
 287         .vbp            = 1,
 288
 289         .init           = p2_panel_init,
 290         .cleanup        = p2_panel_cleanup,
 291         .enable         = p2_panel_enable,
 292         .disable        = p2_panel_disable,
 293         .get_caps       = p2_panel_get_caps,
 294 };
 295
 296 static int p2_panel_probe(struct platform_device *pdev)
 297 {
 298         omapfb_register_panel(&p2_panel);
 299         return 0;
 300 }
 301
 302 static int p2_panel_remove(struct platform_device *pdev)
 303 {
 304         return 0;
 305 }
 306
 307 static int p2_panel_suspend(struct platform_device *pdev, pm_message_t mesg)
 308 {
 309         return 0;
 310 }
 311
 312 static int p2_panel_resume(struct platform_device *pdev)
 313 {
 314         return 0;
 315 }
 316
 317 struct platform_driver p2_panel_driver = {
 318         .probe          = p2_panel_probe,
 319         .remove         = p2_panel_remove,
 320         .suspend        = p2_panel_suspend,
 321         .resume         = p2_panel_resume,
 322         .driver         = {
 323                 .name   = "lcd_p2",
 324                 .owner  = THIS_MODULE,
 325         },
 326 };
 327
 328 static int p2_panel_drv_init(void)
 329 {
 330         return platform_driver_register(&p2_panel_driver);
 331 }
 332
 333 static void p2_panel_drv_cleanup(void)
 334 {
 335         platform_driver_unregister(&p2_panel_driver);
 336 }
 337
 338 module_init(p2_panel_drv_init);
 339 module_exit(p2_panel_drv_cleanup);
 340