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 <asm/arch/mux.h>
  29 #include <asm/arch/gpio.h>
  30 #include <asm/arch/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         omap_set_gpio_direction(19, 0);
 169         omap_set_gpio_dataout(19, 0);
 170         mdelay(2);
 171         omap_set_gpio_dataout(19, 1);
 172
 173                 /* bits 31:28 -> 0  LCD_PXL_15 .. 12 */
 174         value = omap_readl(OMAP730_IO_CONF_3) & 0x0FFFFFFF;
 175         omap_writel(value, OMAP730_IO_CONF_3);
 176
 177                 /* bits 19:0 -> 0  LCD_VSYNC, AC, PXL_0, PCLK, HSYNC,
 178                 **                 PXL_9..1, PXL_10, PXL_11
 179                 */
 180         value = omap_readl(OMAP730_IO_CONF_4) & 0xFFF00000;
 181         omap_writel(value, OMAP730_IO_CONF_4);
 182
 183         omap_uwire_configure_mode(0,16);
 184
 185         omap_uwire_data_transfer(LCD_UWIRE_CS, LCD_DISOFF, 9, 0,NULL,1);
 186         omap_uwire_data_transfer(LCD_UWIRE_CS, LCD_SLPIN, 9, 0,NULL,1);
 187         omap_uwire_data_transfer(LCD_UWIRE_CS, LCD_DISNOR, 9, 0,NULL,1);
 188         omap_uwire_data_transfer(LCD_UWIRE_CS, LCD_GSSET, 9, 0,NULL,1);
 189         omap_uwire_data_transfer(LCD_UWIRE_CS, (INIT_GSSET | 0x100), 9, 0,NULL,1);
 190
 191         /* DISCTL */
 192         omap_uwire_data_transfer(LCD_UWIRE_CS, LCD_DISCTL, 9, 0,NULL,1);
 193         for (i = 0; i < (sizeof(INIT_DISCTL)/sizeof(unsigned short)); i++)
 194                 omap_uwire_data_transfer(LCD_UWIRE_CS, (INIT_DISCTL[i] | 0x100), 9, 0,NULL,1);
 195
 196         /* GCP64 */
 197         omap_uwire_data_transfer(LCD_UWIRE_CS, LCD_GCP64, 9, 0,NULL,1);
 198         for (i = 0; i < (sizeof(INIT_GCP64)/sizeof(unsigned short)); i++)
 199                 omap_uwire_data_transfer(LCD_UWIRE_CS, (INIT_GCP64[i] | 0x100), 9, 0,NULL,1);
 200
 201         /* GCP16 */
 202         omap_uwire_data_transfer(LCD_UWIRE_CS, LCD_GCP16, 9, 0,NULL,1);
 203         for (i = 0; i < (sizeof(INIT_GCP16)/sizeof(unsigned short)); i++)
 204                 omap_uwire_data_transfer(LCD_UWIRE_CS, (INIT_GCP16[i] | 0x100), 9, 0,NULL,1);
 205
 206         /* MD_CSET */
 207         omap_uwire_data_transfer(LCD_UWIRE_CS, LCD_MD_CSET, 9, 0,NULL,1);
 208         for (i = 0; i < (sizeof(INIT_MD_CSET)/sizeof(unsigned short)); i++)
 209                 omap_uwire_data_transfer(LCD_UWIRE_CS, (INIT_MD_CSET[i] | 0x100), 9, 0,NULL,1);
 210
 211         /* MD_PSET */
 212         omap_uwire_data_transfer(LCD_UWIRE_CS, LCD_MD_PSET, 9, 0,NULL,1);
 213         for (i = 0; i < (sizeof(INIT_MD_PSET)/sizeof(unsigned short)); i++)
 214                 omap_uwire_data_transfer(LCD_UWIRE_CS, (INIT_MD_PSET[i] | 0x100), 9, 0,NULL,1);
 215
 216         /* SD_CSET */
 217         omap_uwire_data_transfer(LCD_UWIRE_CS, LCD_SD_CSET, 9, 0,NULL,1);
 218         for (i = 0; i < (sizeof(INIT_SD_CSET)/sizeof(unsigned short)); i++)
 219                 omap_uwire_data_transfer(LCD_UWIRE_CS, (INIT_SD_CSET[i] | 0x100), 9, 0,NULL,1);
 220
 221         /* SD_PSET */
 222         omap_uwire_data_transfer(LCD_UWIRE_CS, LCD_SD_PSET, 9, 0,NULL,1);
 223         for (i = 0; i < (sizeof(INIT_SD_PSET)/sizeof(unsigned short)); i++)
 224                 omap_uwire_data_transfer(LCD_UWIRE_CS, (INIT_SD_PSET[i] | 0x100), 9, 0,NULL,1);
 225
 226         /* DATCTL */
 227         omap_uwire_data_transfer(LCD_UWIRE_CS, LCD_DATCTL, 9, 0,NULL,1);
 228         omap_uwire_data_transfer(LCD_UWIRE_CS, (INIT_DATCTL | 0x100), 9, 0,NULL,1);
 229
 230         /* OSSISEL = d'5 */
 231         omap_uwire_data_transfer(LCD_UWIRE_CS, LCD_OSCISEL, 9, 0,NULL,1);
 232         omap_uwire_data_transfer(LCD_UWIRE_CS, (INIT_OSCISEL | 0x100), 9, 0,NULL,1);
 233
 234         /* 14MSET = d'74 */
 235         omap_uwire_data_transfer(LCD_UWIRE_CS, LCD_14MSET, 9, 0,NULL,1);
 236         omap_uwire_data_transfer(LCD_UWIRE_CS, (INIT_14MSET | 0x100), 9, 0,NULL,1);
 237
 238         /* 14MEND */
 239         omap_uwire_data_transfer(LCD_UWIRE_CS, LCD_14MEND, 9, 0,NULL,1);
 240
 241         /* 3500KSET = d'69 */
 242         omap_uwire_data_transfer(LCD_UWIRE_CS, LCD_3500KSET, 9, 0,NULL,1);
 243         omap_uwire_data_transfer(LCD_UWIRE_CS, (INIT_3500KSET | 0x100), 9, 0,NULL,1);
 244
 245         /* 3500KEND */
 246         omap_uwire_data_transfer(LCD_UWIRE_CS, LCD_3500KEND, 9, 0,NULL,1);
 247
 248         omap_uwire_data_transfer(LCD_UWIRE_CS, LCD_SLPOUT, 9, 0,NULL,1);
 249
 250         omap_uwire_data_transfer(LCD_UWIRE_CS, LCD_VOLCTL, 9, 0,NULL,1);
 251         omap_uwire_data_transfer(LCD_UWIRE_CS, (INIT_VOLCTL_Ton | 0x100), 9, 0,NULL,1);
 252
 253         omap_uwire_data_transfer(LCD_UWIRE_CS, LCD_VOLCTL, 9, 0,NULL,1);
 254
 255         omap_uwire_data_transfer(LCD_UWIRE_CS, (INIT_VOLCTL | 0x100), 9, 0,NULL,1);
 256
 257         omap_uwire_data_transfer(LCD_UWIRE_CS, LCD_DISON, 9, 0,NULL,1);
 258
 259         /* enable backlight */
 260         omap_set_gpio_direction(134, 0);
 261         omap_set_gpio_dataout(134, 1);
 262
 263         return 0;
 264 }
 265
 266 static void p2_panel_disable(struct lcd_panel *panel)
 267 {
 268 }
 269
 270 static unsigned long p2_panel_get_caps(struct lcd_panel *panel)
 271 {
 272         return 0;
 273 }
 274
 275 struct lcd_panel p2_panel = {
 276         .name           = "p2",
 277         .config         = OMAP_LCDC_PANEL_TFT | OMAP_LCDC_INV_PIX_CLOCK,
 278
 279         .bpp            = 16,
 280         .data_lines     = 16,
 281         .x_res          = 176,
 282         .y_res          = 220,
 283         .pixel_clock    = 12500,
 284         .hsw            = 5,
 285         .hfp            = 1,
 286         .hbp            = 1,
 287         .vsw            = 2,
 288         .vfp            = 12,
 289         .vbp            = 1,
 290
 291         .init           = p2_panel_init,
 292         .cleanup        = p2_panel_cleanup,
 293         .enable         = p2_panel_enable,
 294         .disable        = p2_panel_disable,
 295         .get_caps       = p2_panel_get_caps,
 296 };
 297
 298 static int p2_panel_probe(struct platform_device *pdev)
 299 {
 300         omapfb_register_panel(&p2_panel);
 301         return 0;
 302 }
 303
 304 static int p2_panel_remove(struct platform_device *pdev)
 305 {
 306         return 0;
 307 }
 308
 309 static int p2_panel_suspend(struct platform_device *pdev, pm_message_t mesg)
 310 {
 311         return 0;
 312 }
 313
 314 static int p2_panel_resume(struct platform_device *pdev)
 315 {
 316         return 0;
 317 }
 318
 319 struct platform_driver p2_panel_driver = {
 320         .probe          = p2_panel_probe,
 321         .remove         = p2_panel_remove,
 322         .suspend        = p2_panel_suspend,
 323         .resume         = p2_panel_resume,
 324         .driver         = {
 325                 .name   = "lcd_p2",
 326                 .owner  = THIS_MODULE,
 327         },
 328 };
 329
 330 static int p2_panel_drv_init(void)
 331 {
 332         return platform_driver_register(&p2_panel_driver);
 333 }
 334
 335 static void p2_panel_drv_cleanup(void)
 336 {
 337         platform_driver_unregister(&p2_panel_driver);
 338 }
 339
 340 module_init(p2_panel_drv_init);
 341 module_exit(p2_panel_drv_cleanup);
 342