drivers/video/omap/lcd_p2.c

   1 /*
   2  * File: drivers/video/omap/lcd-p2.c
   3  *
   4  * LCD panel support for the TI OMAP P2 board
   5  *
   6  * Authors:
   7  *   jekyll <jekyll@mail.jekyll.idv.tw>
   8  *   B Jp <lastjp_fr@yahoo.fr>
   9  *   Brian Swetland <swetland@android.com>
  10  *
  11  * This program is free software; you can redistribute it and/or modify it
  12  * under the terms of the GNU General Public License as published by the
  13  * Free Software Foundation; either version 2 of the License, or (at your
  14  * option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful, but
  17  * WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  19  * General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License along
  22  * with this program; if not, write to the Free Software Foundation, Inc.,
  23  * 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  24  */
  25
  26 #include <linux/module.h>
  27 #include <linux/delay.h>
  28 #include <linux/platform_device.h>
  29
  30 #include <asm/arch/mux.h>
  31 #include <asm/arch/gpio.h>
  32 #include <asm/arch/omapfb.h>
  33
  34 /*
  35  * File: epson-md-tft.h
  36  *
  37  * This file contains definitions for Epsons MD-TF LCD Module
  38  *
  39  * Copyright (C) 2004 MPC-Data Limited  (http://www.mpc-data.co.uk)
  40  * Author: Dave Peverley <dpeverley at mpc-data.co.uk>
  41  *
  42  *  This program is free software; you can redistribute  it and/or modify it
  43  *  under  the terms of  the GNU General  Public License as published by the
  44  *  Free Software Foundation;  either version 2 of the  License, or (at your
  45  *  option) any later version.
  46  *
  47  *  THIS  SOFTWARE  IS  PROVIDED  ``AS  IS''  AND   ANY  EXPRESS  OR IMPLIED
  48  *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
  49  *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
  50  *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT,  INDIRECT,
  51  *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  52  *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
  53  *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
  54  *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
  55  *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  56  *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  57  *
  58  *  You should have received a copy of the  GNU General Public License along
  59  *  with this program; if not, write  to the Free Software Foundation, Inc.,
  60  *  675 Mass Ave, Cambridge, MA 02139, USA.
  61  *
  62  * Please report all bugs and problems to the author.
  63  *
  64  */
  65
  66 /* LCD uWire commands & params
  67  * All values from Epson
  68  */
  69 #define LCD_DISON 0xAF
  70 #define LCD_DISOFF 0xAE
  71 #define LCD_DISNOR 0xA6
  72 #define LCD_DISINV 0xA7
  73 #define LCD_DISCTL 0xCA
  74 #define LCD_GCP64 0xCB
  75 #define LCD_GCP16 0xCC
  76 #define LCD_GSSET 0xCD
  77 #define LCD_SLPIN 0x95
  78 #define LCD_SLPOUT 0x94
  79 #define LCD_SD_PSET 0x75
  80 #define LCD_MD_PSET 0x76
  81 #define LCD_SD_CSET 0x15
  82 #define LCD_MD_CSET 0x16
  83 #define LCD_DATCTL 0xBC
  84 #define LCD_RAMWR 0x5C
  85 #define LCD_RAMRD 0x5D
  86 #define LCD_PTLIN 0xA8
  87 #define LCD_PTLOUT 0xA9
  88 #define LCD_ASCSET 0xAA
  89 #define LCD_SCSTART 0xAB
  90 #define LCD_VOLCTL 0xC6
  91 #define LCD_NOP 0x25
  92 #define LCD_OSCISEL 0x7
  93 #define LCD_3500KSET 0xD1
  94 #define LCD_3500KEND 0xD2
  95 #define LCD_14MSET 0xD3
  96 #define LCD_14MEND 0xD4
  97
  98 #define INIT_3500KSET 0x45
  99 #define INIT_14MSET 0x4B
 100 #define INIT_DATCTL 0x08 /* 6.6.6 bits for D-Sample */
 101
 102 #define INIT_OSCISEL 0x05
 103
 104 #define INIT_VOLCTL 0x77 /* Nominel "volume" */
 105
 106 #define INIT_VOLCTL_Ton 0x98 /* Activate power-IC timer */
 107 #define INIT_GSSET 0x00
 108
 109 const unsigned short INIT_DISCTL[11] =
 110 {
 111         0xDE, 0x01, 0x64, 0x00, 0x1B, 0xF4, 0x00, 0xDC, 0x00, 0x02, 0x00
 112 };
 113
 114 const unsigned short INIT_GCP64[126] =
 115 {
 116         0x3B,0x00,0x42,0x00,0x4A,0x00,0x51,0x00,
 117         0x58,0x00,0x5F,0x00,0x66,0x00,0x6E,0x00,
 118         0x75,0x00,0x7C,0x00,0x83,0x00,0x8A,0x00,
 119         0x92,0x00,0x99,0x00,0xA0,0x00,0xA7,0x00,
 120         0xAE,0x00,0xB6,0x00,0xBD,0x00,0xC4,0x00,
 121         0xCB,0x00,0xD2,0x00,0xDA,0x00,0xE1,0x00,
 122         0xE8,0x00,0xEF,0x00,0xF6,0x00,0xFE,0x00,
 123         0x05,0x01,0x0C,0x01,0x13,0x01,0x1A,0x01,
 124         0x22,0x01,0x29,0x01,0x30,0x01,0x37,0x01,
 125         0x3E,0x01,0x46,0x01,0x4D,0x01,0x54,0x01,
 126         0x5B,0x01,0x62,0x01,0x6A,0x01,0x71,0x01,
 127         0x78,0x01,0x7F,0x01,0x86,0x01,0x8E,0x01,
 128         0x95,0x01,0x9C,0x01,0xA3,0x01,0xAA,0x01,
 129         0xB2,0x01,0xB9,0x01,0xC0,0x01,0xC7,0x01,
 130         0xCE,0x01,0xD6,0x01,0xDD,0x01,0xE4,0x01,
 131         0xEB,0x01,0xF2,0x01,0xFA,0x01
 132 };
 133
 134 const unsigned short INIT_GCP16[15] =
 135 {
 136         0x1A,0x31,0x48,0x54,0x5F,0x67,0x70,0x76,0x7C,0x80,0x83,0x84,0x85,0x87,0x96
 137 };
 138
 139 const unsigned short INIT_MD_PSET[4] = { 0, 0, 219, 0 };
 140 const unsigned short INIT_MD_CSET[4] = { 2, 0, 177, 0 };
 141
 142 const unsigned short INIT_SD_PSET[4] = { 0x00, 0x01, 0x00, 0x01 };
 143 const unsigned short INIT_SD_CSET[4] = { 0x00, 0x02, 0x00, 0x02 };
 144
 145 const unsigned short INIT_ASCSET[7] = { 0x00, 0x00, 0xDB, 0x00, 0xDC, 0x00, 0x01 };
 146 const unsigned short INIT_SCSTART[2] = { 0x00, 0x00 };
 147
 148 /* ----- end of epson_md_tft.h ----- */
 149
 150
 151 #include "../drivers/ssi/omap-uwire.h"
 152
 153 #define LCD_UWIRE_CS 0
 154
 155 static int p2_panel_init(struct lcd_panel *panel, struct omapfb_device *fbdev)
 156 {
 157         return 0;
 158 }
 159
 160 static void p2_panel_cleanup(struct lcd_panel *panel)
 161 {
 162 }
 163
 164 static int p2_panel_enable(struct lcd_panel *panel)
 165 {
 166         int i;
 167         unsigned long value;
 168
 169                 /* thwack the reset line */
 170         omap_set_gpio_direction(19, 0);
 171         omap_set_gpio_dataout(19, 0);
 172         mdelay(2);
 173         omap_set_gpio_dataout(19, 1);
 174
 175                 /* bits 31:28 -> 0  LCD_PXL_15 .. 12 */
 176         value = omap_readl(OMAP730_IO_CONF_3) & 0x0FFFFFFF;
 177         omap_writel(value, OMAP730_IO_CONF_3);
 178
 179                 /* bits 19:0 -> 0  LCD_VSYNC, AC, PXL_0, PCLK, HSYNC,
 180                 **                 PXL_9..1, PXL_10, PXL_11
 181                 */
 182         value = omap_readl(OMAP730_IO_CONF_4) & 0xFFF00000;
 183         omap_writel(value, OMAP730_IO_CONF_4);
 184
 185         omap_uwire_configure_mode(0,16);
 186
 187         omap_uwire_data_transfer(LCD_UWIRE_CS, LCD_DISOFF, 9, 0,NULL,1);
 188         omap_uwire_data_transfer(LCD_UWIRE_CS, LCD_SLPIN, 9, 0,NULL,1);
 189         omap_uwire_data_transfer(LCD_UWIRE_CS, LCD_DISNOR, 9, 0,NULL,1);
 190         omap_uwire_data_transfer(LCD_UWIRE_CS, LCD_GSSET, 9, 0,NULL,1);
 191         omap_uwire_data_transfer(LCD_UWIRE_CS, (INIT_GSSET | 0x100), 9, 0,NULL,1);
 192
 193         /* DISCTL */
 194         omap_uwire_data_transfer(LCD_UWIRE_CS, LCD_DISCTL, 9, 0,NULL,1);
 195         for (i = 0; i < (sizeof(INIT_DISCTL)/sizeof(unsigned short)); i++)
 196                 omap_uwire_data_transfer(LCD_UWIRE_CS, (INIT_DISCTL[i] | 0x100), 9, 0,NULL,1);
 197
 198         /* GCP64 */
 199         omap_uwire_data_transfer(LCD_UWIRE_CS, LCD_GCP64, 9, 0,NULL,1);
 200         for (i = 0; i < (sizeof(INIT_GCP64)/sizeof(unsigned short)); i++)
 201                 omap_uwire_data_transfer(LCD_UWIRE_CS, (INIT_GCP64[i] | 0x100), 9, 0,NULL,1);
 202
 203         /* GCP16 */
 204         omap_uwire_data_transfer(LCD_UWIRE_CS, LCD_GCP16, 9, 0,NULL,1);
 205         for (i = 0; i < (sizeof(INIT_GCP16)/sizeof(unsigned short)); i++)
 206                 omap_uwire_data_transfer(LCD_UWIRE_CS, (INIT_GCP16[i] | 0x100), 9, 0,NULL,1);
 207
 208         /* MD_CSET */
 209         omap_uwire_data_transfer(LCD_UWIRE_CS, LCD_MD_CSET, 9, 0,NULL,1);
 210         for (i = 0; i < (sizeof(INIT_MD_CSET)/sizeof(unsigned short)); i++)
 211                 omap_uwire_data_transfer(LCD_UWIRE_CS, (INIT_MD_CSET[i] | 0x100), 9, 0,NULL,1);
 212
 213         /* MD_PSET */
 214         omap_uwire_data_transfer(LCD_UWIRE_CS, LCD_MD_PSET, 9, 0,NULL,1);
 215         for (i = 0; i < (sizeof(INIT_MD_PSET)/sizeof(unsigned short)); i++)
 216                 omap_uwire_data_transfer(LCD_UWIRE_CS, (INIT_MD_PSET[i] | 0x100), 9, 0,NULL,1);
 217
 218         /* SD_CSET */
 219         omap_uwire_data_transfer(LCD_UWIRE_CS, LCD_SD_CSET, 9, 0,NULL,1);
 220         for (i = 0; i < (sizeof(INIT_SD_CSET)/sizeof(unsigned short)); i++)
 221                 omap_uwire_data_transfer(LCD_UWIRE_CS, (INIT_SD_CSET[i] | 0x100), 9, 0,NULL,1);
 222
 223         /* SD_PSET */
 224         omap_uwire_data_transfer(LCD_UWIRE_CS, LCD_SD_PSET, 9, 0,NULL,1);
 225         for (i = 0; i < (sizeof(INIT_SD_PSET)/sizeof(unsigned short)); i++)
 226                 omap_uwire_data_transfer(LCD_UWIRE_CS, (INIT_SD_PSET[i] | 0x100), 9, 0,NULL,1);
 227
 228         /* DATCTL */
 229         omap_uwire_data_transfer(LCD_UWIRE_CS, LCD_DATCTL, 9, 0,NULL,1);
 230         omap_uwire_data_transfer(LCD_UWIRE_CS, (INIT_DATCTL | 0x100), 9, 0,NULL,1);
 231
 232         /* OSSISEL = d'5 */
 233         omap_uwire_data_transfer(LCD_UWIRE_CS, LCD_OSCISEL, 9, 0,NULL,1);
 234         omap_uwire_data_transfer(LCD_UWIRE_CS, (INIT_OSCISEL | 0x100), 9, 0,NULL,1);
 235
 236         /* 14MSET = d'74 */
 237         omap_uwire_data_transfer(LCD_UWIRE_CS, LCD_14MSET, 9, 0,NULL,1);
 238         omap_uwire_data_transfer(LCD_UWIRE_CS, (INIT_14MSET | 0x100), 9, 0,NULL,1);
 239
 240         /* 14MEND */
 241         omap_uwire_data_transfer(LCD_UWIRE_CS, LCD_14MEND, 9, 0,NULL,1);
 242
 243         /* 3500KSET = d'69 */
 244         omap_uwire_data_transfer(LCD_UWIRE_CS, LCD_3500KSET, 9, 0,NULL,1);
 245         omap_uwire_data_transfer(LCD_UWIRE_CS, (INIT_3500KSET | 0x100), 9, 0,NULL,1);
 246
 247         /* 3500KEND */
 248         omap_uwire_data_transfer(LCD_UWIRE_CS, LCD_3500KEND, 9, 0,NULL,1);
 249
 250         omap_uwire_data_transfer(LCD_UWIRE_CS, LCD_SLPOUT, 9, 0,NULL,1);
 251
 252         omap_uwire_data_transfer(LCD_UWIRE_CS, LCD_VOLCTL, 9, 0,NULL,1);
 253         omap_uwire_data_transfer(LCD_UWIRE_CS, (INIT_VOLCTL_Ton | 0x100), 9, 0,NULL,1);
 254
 255         omap_uwire_data_transfer(LCD_UWIRE_CS, LCD_VOLCTL, 9, 0,NULL,1);
 256
 257         omap_uwire_data_transfer(LCD_UWIRE_CS, (INIT_VOLCTL | 0x100), 9, 0,NULL,1);
 258
 259         omap_uwire_data_transfer(LCD_UWIRE_CS, LCD_DISON, 9, 0,NULL,1);
 260
 261         /* enable backlight */
 262         omap_set_gpio_direction(134, 0);
 263         omap_set_gpio_dataout(134, 1);
 264
 265         return 0;
 266 }
 267
 268 static void p2_panel_disable(struct lcd_panel *panel)
 269 {
 270 }
 271
 272 static unsigned long p2_panel_get_caps(struct lcd_panel *panel)
 273 {
 274         return 0;
 275 }
 276
 277 struct lcd_panel p2_panel = {
 278         .name           = "p2",
 279         .config         = OMAP_LCDC_PANEL_TFT | OMAP_LCDC_INV_PIX_CLOCK,
 280
 281         .bpp            = 16,
 282         .data_lines     = 16,
 283         .x_res          = 176,
 284         .y_res          = 220,
 285         .pixel_clock    = 12500,
 286         .hsw            = 5,
 287         .hfp            = 1,
 288         .hbp            = 1,
 289         .vsw            = 2,
 290         .vfp            = 12,
 291         .vbp            = 1,
 292
 293         .init           = p2_panel_init,
 294         .cleanup        = p2_panel_cleanup,
 295         .enable         = p2_panel_enable,
 296         .disable        = p2_panel_disable,
 297         .get_caps       = p2_panel_get_caps,
 298 };
 299
 300 static int p2_panel_probe(struct platform_device *pdev)
 301 {
 302         omapfb_register_panel(&p2_panel);
 303         return 0;
 304 }
 305
 306 static int p2_panel_remove(struct platform_device *pdev)
 307 {
 308         return 0;
 309 }
 310
 311 static int p2_panel_suspend(struct platform_device *pdev, pm_message_t mesg)
 312 {
 313         return 0;
 314 }
 315
 316 static int p2_panel_resume(struct platform_device *pdev)
 317 {
 318         return 0;
 319 }
 320
 321 struct platform_driver p2_panel_driver = {
 322         .probe          = p2_panel_probe,
 323         .remove         = p2_panel_remove,
 324         .suspend        = p2_panel_suspend,
 325         .resume         = p2_panel_resume,
 326         .driver         = {
 327                 .name   = "lcd_p2",
 328                 .owner  = THIS_MODULE,
 329         },
 330 };
 331
 332 static int p2_panel_drv_init(void)
 333 {
 334         return platform_driver_register(&p2_panel_driver);
 335 }
 336
 337 static void p2_panel_drv_cleanup(void)
 338 {
 339         platform_driver_unregister(&p2_panel_driver);
 340 }
 341
 342 module_init(p2_panel_drv_init);
 343 module_exit(p2_panel_drv_cleanup);
 344