Pandora Sourcecodes - openembedded.git/blob

   1 From ae9500a932f6e8d4f0d35b91231957727428c5cc Mon Sep 17 00:00:00 2001
   2 From: Steve Sakoman <steve@sakoman.com>
   3 Date: Thu, 17 Dec 2009 15:05:30 -0800
   4 Subject: [PATCH 20/48] OMAP: DSS2: Add support for LG Philips LB035Q02 panel
   5
   6 ---
   7  drivers/video/omap2/displays/Kconfig               |   12 +
   8  drivers/video/omap2/displays/Makefile              |    2 +
   9  .../omap2/displays/panel-lgphilips-lb035q02.c      |  244 ++++++++++++++++++++
  10  3 files changed, 258 insertions(+), 0 deletions(-)
  11  create mode 100644 drivers/video/omap2/displays/panel-lgphilips-lb035q02.c
  12
  13 diff --git a/drivers/video/omap2/displays/Kconfig b/drivers/video/omap2/displays/Kconfig
  14 index 12327bb..48e872f 100644
  15 --- a/drivers/video/omap2/displays/Kconfig
  16 +++ b/drivers/video/omap2/displays/Kconfig
  17 @@ -7,6 +7,18 @@ config PANEL_GENERIC
  18           Generic panel driver.
  19           Used for DVI output for Beagle and OMAP3 SDP.
  20
  21 +config PANEL_LGPHILIPS_LB035Q02
  22 +       tristate "LG.Philips LB035Q02 LCD Panel"
  23 +       depends on OMAP2_DSS
  24 +       help
  25 +         LCD Panel used on Overo Palo35
  26 +
  27 +config PANEL_SAMSUNG_LTE430WQ_F0C
  28 +        tristate "Samsung LTE430WQ-F0C LCD Panel"
  29 +        depends on OMAP2_DSS
  30 +        help
  31 +          LCD Panel used on Overo Palo43
  32 +
  33  config PANEL_SHARP_LS037V7DW01
  34          tristate "Sharp LS037V7DW01 LCD Panel"
  35          depends on OMAP2_DSS
  36 diff --git a/drivers/video/omap2/displays/Makefile b/drivers/video/omap2/displays/Makefile
  37 index aa38609..2fb1a57 100644
  38 --- a/drivers/video/omap2/displays/Makefile
  39 +++ b/drivers/video/omap2/displays/Makefile
  40 @@ -1,4 +1,6 @@
  41  obj-$(CONFIG_PANEL_GENERIC) += panel-generic.o
  42 +obj-$(CONFIG_PANEL_LGPHILIPS_LB035Q02) += panel-lgphilips-lb035q02.o
  43 +obj-$(CONFIG_PANEL_SAMSUNG_LTE430WQ_F0C) += panel-samsung-lte430wq-f0c.o
  44  obj-$(CONFIG_PANEL_SHARP_LS037V7DW01) += panel-sharp-ls037v7dw01.o
  45  obj-$(CONFIG_PANEL_SHARP_LQ043T1DG01) += panel-sharp-lq043t1dg01.o
  46
  47 diff --git a/drivers/video/omap2/displays/panel-lgphilips-lb035q02.c b/drivers/video/omap2/displays/panel-lgphilips-lb035q02.c
  48 new file mode 100644
  49 index 0000000..4ad709d
  50 --- /dev/null
  51 +++ b/drivers/video/omap2/displays/panel-lgphilips-lb035q02.c
  52 @@ -0,0 +1,244 @@
  53 +/*
  54 + * LCD panel driver for LG.Philips LB035Q02
  55 + *
  56 + * Author: Steve Sakoman <steve@sakoman.com>
  57 + *
  58 + * This program is free software; you can redistribute it and/or modify it
  59 + * under the terms of the GNU General Public License version 2 as published by
  60 + * the Free Software Foundation.
  61 + *
  62 + * This program is distributed in the hope that it will be useful, but WITHOUT
  63 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  64 + * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  65 + * more details.
  66 + *
  67 + * You should have received a copy of the GNU General Public License along with
  68 + * this program.  If not, see <http://www.gnu.org/licenses/>.
  69 + */
  70 +
  71 +#include <linux/module.h>
  72 +#include <linux/delay.h>
  73 +#include <linux/spi/spi.h>
  74 +
  75 +#include <plat/display.h>
  76 +
  77 +static struct spi_device       *spidev;
  78 +
  79 +static struct omap_video_timings lb035q02_timings = {
  80 +       .x_res = 320,
  81 +       .y_res = 240,
  82 +
  83 +       .pixel_clock    = 6500,
  84 +
  85 +       .hsw            = 2,
  86 +       .hfp            = 20,
  87 +       .hbp            = 68,
  88 +
  89 +       .vsw            = 2,
  90 +       .vfp            = 4,
  91 +       .vbp            = 18,
  92 +};
  93 +
  94 +static int lb035q02_write_reg(u8 reg, u16 val)
  95 +{
  96 +       struct spi_message msg;
  97 +       struct spi_transfer index_xfer = {
  98 +               .len            = 3,
  99 +               .cs_change      = 1,
 100 +       };
 101 +       struct spi_transfer value_xfer = {
 102 +               .len            = 3,
 103 +       };
 104 +       u8      buffer[16];
 105 +
 106 +       spi_message_init(&msg);
 107 +
 108 +       /* register index */
 109 +       buffer[0] = 0x70;
 110 +       buffer[1] = 0x00;
 111 +       buffer[2] = reg & 0x7f;
 112 +       index_xfer.tx_buf = buffer;
 113 +       spi_message_add_tail(&index_xfer, &msg);
 114 +
 115 +       /* register value */
 116 +       buffer[4] = 0x72;
 117 +       buffer[5] = val >> 8;
 118 +       buffer[6] = val;
 119 +       value_xfer.tx_buf = buffer + 4;
 120 +       spi_message_add_tail(&value_xfer, &msg);
 121 +
 122 +       return spi_sync(spidev, &msg);
 123 +}
 124 +
 125 +static int lb035q02_panel_power_on(struct omap_dss_device *dssdev)
 126 +{
 127 +       int r;
 128 +
 129 +       if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE)
 130 +               return 0;
 131 +
 132 +       r = omapdss_dpi_display_enable(dssdev);
 133 +       if (r)
 134 +               goto err0;
 135 +
 136 +       if (dssdev->platform_enable) {
 137 +               r = dssdev->platform_enable(dssdev);
 138 +               if (r)
 139 +                       goto err1;
 140 +       }
 141 +
 142 +       /* Panel init sequence from page 28 of the spec */
 143 +       lb035q02_write_reg(0x01, 0x6300);
 144 +       lb035q02_write_reg(0x02, 0x0200);
 145 +       lb035q02_write_reg(0x03, 0x0177);
 146 +       lb035q02_write_reg(0x04, 0x04c7);
 147 +       lb035q02_write_reg(0x05, 0xffc0);
 148 +       lb035q02_write_reg(0x06, 0xe806);
 149 +       lb035q02_write_reg(0x0a, 0x4008);
 150 +       lb035q02_write_reg(0x0b, 0x0000);
 151 +       lb035q02_write_reg(0x0d, 0x0030);
 152 +       lb035q02_write_reg(0x0e, 0x2800);
 153 +       lb035q02_write_reg(0x0f, 0x0000);
 154 +       lb035q02_write_reg(0x16, 0x9f80);
 155 +       lb035q02_write_reg(0x17, 0x0a0f);
 156 +       lb035q02_write_reg(0x1e, 0x00c1);
 157 +       lb035q02_write_reg(0x30, 0x0300);
 158 +       lb035q02_write_reg(0x31, 0x0007);
 159 +       lb035q02_write_reg(0x32, 0x0000);
 160 +       lb035q02_write_reg(0x33, 0x0000);
 161 +       lb035q02_write_reg(0x34, 0x0707);
 162 +       lb035q02_write_reg(0x35, 0x0004);
 163 +       lb035q02_write_reg(0x36, 0x0302);
 164 +       lb035q02_write_reg(0x37, 0x0202);
 165 +       lb035q02_write_reg(0x3a, 0x0a0d);
 166 +       lb035q02_write_reg(0x3b, 0x0806);
 167 +
 168 +       return 0;
 169 +err1:
 170 +       omapdss_dpi_display_disable(dssdev);
 171 +err0:
 172 +       return r;
 173 +}
 174 +
 175 +static void lb035q02_panel_power_off(struct omap_dss_device *dssdev)
 176 +{
 177 +       if (dssdev->state != OMAP_DSS_DISPLAY_ACTIVE)
 178 +               return;
 179 +
 180 +       if (dssdev->platform_disable)
 181 +               dssdev->platform_disable(dssdev);
 182 +
 183 +       omapdss_dpi_display_disable(dssdev);
 184 +}
 185 +
 186 +static int lb035q02_panel_probe(struct omap_dss_device *dssdev)
 187 +{
 188 +       dssdev->panel.config = OMAP_DSS_LCD_TFT | OMAP_DSS_LCD_IVS |
 189 +               OMAP_DSS_LCD_IHS;
 190 +       dssdev->panel.timings = lb035q02_timings;
 191 +
 192 +       return 0;
 193 +}
 194 +
 195 +static void lb035q02_panel_remove(struct omap_dss_device *dssdev)
 196 +{
 197 +}
 198 +
 199 +static int lb035q02_panel_enable(struct omap_dss_device *dssdev)
 200 +{
 201 +       int r = 0;
 202 +
 203 +       r = lb035q02_panel_power_on(dssdev);
 204 +       if (r)
 205 +               return r;
 206 +
 207 +       dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
 208 +
 209 +       return 0;
 210 +}
 211 +
 212 +static void lb035q02_panel_disable(struct omap_dss_device *dssdev)
 213 +{
 214 +       lb035q02_panel_power_off(dssdev);
 215 +
 216 +       dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
 217 +}
 218 +
 219 +static int lb035q02_panel_suspend(struct omap_dss_device *dssdev)
 220 +{
 221 +       lb035q02_panel_disable(dssdev);
 222 +       dssdev->state = OMAP_DSS_DISPLAY_SUSPENDED;
 223 +       return 0;
 224 +}
 225 +
 226 +static int lb035q02_panel_resume(struct omap_dss_device *dssdev)
 227 +{
 228 +       int r;
 229 +
 230 +       r = lb035q02_panel_power_on(dssdev);
 231 +       if (r)
 232 +               return r;
 233 +
 234 +       dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
 235 +
 236 +       return 0;
 237 +}
 238 +
 239 +static struct omap_dss_driver lb035q02_driver = {
 240 +       .probe          = lb035q02_panel_probe,
 241 +       .remove         = lb035q02_panel_remove,
 242 +
 243 +       .enable         = lb035q02_panel_enable,
 244 +       .disable        = lb035q02_panel_disable,
 245 +       .suspend        = lb035q02_panel_suspend,
 246 +       .resume         = lb035q02_panel_resume,
 247 +
 248 +       .driver         = {
 249 +               .name   = "lgphilips_lb035q02_panel",
 250 +               .owner  = THIS_MODULE,
 251 +       },
 252 +};
 253 +
 254 +static int __devinit lb035q02_panel_spi_probe(struct spi_device *spi)
 255 +{
 256 +       spidev = spi;
 257 +       return 0;
 258 +}
 259 +
 260 +static int __devexit lb035q02_panel_spi_remove(struct spi_device *spi)
 261 +{
 262 +       return 0;
 263 +}
 264 +
 265 +static struct spi_driver lb035q02_spi_driver = {
 266 +       .driver         = {
 267 +               .name   = "lgphilips_lb035q02_panel-spi",
 268 +               .owner  = THIS_MODULE,
 269 +       },
 270 +       .probe          = lb035q02_panel_spi_probe,
 271 +       .remove         = __devexit_p (lb035q02_panel_spi_remove),
 272 +};
 273 +
 274 +static int __init lb035q02_panel_drv_init(void)
 275 +{
 276 +       int r;
 277 +       r = spi_register_driver(&lb035q02_spi_driver);
 278 +       if (r != 0)
 279 +               pr_err("lgphilips_lb035q02: Unable to register SPI driver: %d\n", r);
 280 +
 281 +       r = omap_dss_register_driver(&lb035q02_driver);
 282 +       if (r != 0)
 283 +               pr_err("lgphilips_lb035q02: Unable to register panel driver: %d\n", r);
 284 +
 285 +       return r;
 286 +}
 287 +
 288 +static void __exit lb035q02_panel_drv_exit(void)
 289 +{
 290 +       spi_unregister_driver(&lb035q02_spi_driver);
 291 +       omap_dss_unregister_driver(&lb035q02_driver);
 292 +}
 293 +
 294 +module_init(lb035q02_panel_drv_init);
 295 +module_exit(lb035q02_panel_drv_exit);
 296 +MODULE_LICENSE("GPL");
 297 --
 298 1.6.6.1
 299