Pandora Sourcecodes - openembedded.git/blob

   1 From e09abf20005e9abf41e44e712bc600d2cb346cb5 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 12/16] OMAP: DSS2: Add support for LG Philips LB035Q02 panel
   5
   6 ---
   7  drivers/video/omap2/displays/Kconfig               |    6 +
   8  drivers/video/omap2/displays/Makefile              |    1 +
   9  .../omap2/displays/panel-lgphilips-lb035q02.c      |  206 ++++++++++++++++++++
  10  3 files changed, 213 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 79d2861..050f29c 100644
  15 --- a/drivers/video/omap2/displays/Kconfig
  16 +++ b/drivers/video/omap2/displays/Kconfig
  17 @@ -7,6 +7,12 @@ 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 diff --git a/drivers/video/omap2/displays/Makefile b/drivers/video/omap2/displays/Makefile
  31 index d44e765..28f6f9b 100644
  32 --- a/drivers/video/omap2/displays/Makefile
  33 +++ b/drivers/video/omap2/displays/Makefile
  34 @@ -1,4 +1,5 @@
  35  obj-$(CONFIG_PANEL_GENERIC) += panel-generic.o
  36 +obj-$(CONFIG_PANEL_LGPHILIPS_LB035Q02) += panel-lgphilips-lb035q02.o
  37  obj-$(CONFIG_PANEL_SAMSUNG_LTE430WQ_F0C) += panel-samsung-lte430wq-f0c.o
  38  obj-$(CONFIG_PANEL_SHARP_LS037V7DW01) += panel-sharp-ls037v7dw01.o
  39
  40 diff --git a/drivers/video/omap2/displays/panel-lgphilips-lb035q02.c b/drivers/video/omap2/displays/panel-lgphilips-lb035q02.c
  41 new file mode 100644
  42 index 0000000..22dc865
  43 --- /dev/null
  44 +++ b/drivers/video/omap2/displays/panel-lgphilips-lb035q02.c
  45 @@ -0,0 +1,206 @@
  46 +/*
  47 + * LCD panel driver for LG.Philips LB035Q02
  48 + *
  49 + * Author: Steve Sakoman <steve@sakoman.com>
  50 + *
  51 + * This program is free software; you can redistribute it and/or modify it
  52 + * under the terms of the GNU General Public License version 2 as published by
  53 + * the Free Software Foundation.
  54 + *
  55 + * This program is distributed in the hope that it will be useful, but WITHOUT
  56 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  57 + * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  58 + * more details.
  59 + *
  60 + * You should have received a copy of the GNU General Public License along with
  61 + * this program.  If not, see <http://www.gnu.org/licenses/>.
  62 + */
  63 +
  64 +#include <linux/module.h>
  65 +#include <linux/delay.h>
  66 +#include <linux/spi/spi.h>
  67 +
  68 +#include <plat/display.h>
  69 +
  70 +static struct spi_device       *spidev;
  71 +
  72 +static struct omap_video_timings lb035q02_timings = {
  73 +       .x_res = 320,
  74 +       .y_res = 240,
  75 +
  76 +       .pixel_clock    = 6500,
  77 +
  78 +       .hsw            = 2,
  79 +       .hfp            = 20,
  80 +       .hbp            = 68,
  81 +
  82 +       .vsw            = 2,
  83 +       .vfp            = 4,
  84 +       .vbp            = 18,
  85 +};
  86 +
  87 +static int lb035q02_panel_probe(struct omap_dss_device *dssdev)
  88 +{
  89 +       dssdev->panel.config = OMAP_DSS_LCD_TFT | OMAP_DSS_LCD_IVS |
  90 +               OMAP_DSS_LCD_IHS;
  91 +       dssdev->panel.timings = lb035q02_timings;
  92 +
  93 +       return 0;
  94 +}
  95 +
  96 +static void lb035q02_panel_remove(struct omap_dss_device *dssdev)
  97 +{
  98 +}
  99 +
 100 +static int lb035q02_write_reg(u8 reg, u16 val)
 101 +{
 102 +       struct spi_message msg;
 103 +       struct spi_transfer index_xfer = {
 104 +               .len            = 3,
 105 +               .cs_change      = 1,
 106 +       };
 107 +       struct spi_transfer value_xfer = {
 108 +               .len            = 3,
 109 +       };
 110 +       u8      buffer[16];
 111 +
 112 +       spi_message_init(&msg);
 113 +
 114 +       /* register index */
 115 +       buffer[0] = 0x70;
 116 +       buffer[1] = 0x00;
 117 +       buffer[2] = reg & 0x7f;
 118 +       index_xfer.tx_buf = buffer;
 119 +       spi_message_add_tail(&index_xfer, &msg);
 120 +
 121 +       /* register value */
 122 +       buffer[4] = 0x72;
 123 +       buffer[5] = val >> 8;
 124 +       buffer[6] = val;
 125 +       value_xfer.tx_buf = buffer + 4;
 126 +       spi_message_add_tail(&value_xfer, &msg);
 127 +
 128 +       return spi_sync(spidev, &msg);
 129 +}
 130 +
 131 +static int lb035q02_panel_enable(struct omap_dss_device *dssdev)
 132 +{
 133 +       int r = 0;
 134 +
 135 +       pr_info("lgphilips_lb035q02: panel_enable: 0x%08x\n", spidev);
 136 +       /* wait couple of vsyncs until enabling the LCD */
 137 +       msleep(50);
 138 +
 139 +       if (dssdev->platform_enable)
 140 +               r = dssdev->platform_enable(dssdev);
 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 r;
 169 +}
 170 +
 171 +static void lb035q02_panel_disable(struct omap_dss_device *dssdev)
 172 +{
 173 +       if (dssdev->platform_disable)
 174 +               dssdev->platform_disable(dssdev);
 175 +
 176 +       /* wait at least 5 vsyncs after disabling the LCD */
 177 +
 178 +       msleep(100);
 179 +}
 180 +
 181 +static int lb035q02_panel_suspend(struct omap_dss_device *dssdev)
 182 +{
 183 +       pr_info("lgphilips_lb035q02: panel_suspend\n");
 184 +       lb035q02_panel_disable(dssdev);
 185 +       return 0;
 186 +}
 187 +
 188 +static int lb035q02_panel_resume(struct omap_dss_device *dssdev)
 189 +{
 190 +       pr_info("lgphilips_lb035q02: panel_resume\n");
 191 +       return lb035q02_panel_enable(dssdev);
 192 +}
 193 +
 194 +static struct omap_dss_driver lb035q02_driver = {
 195 +       .probe          = lb035q02_panel_probe,
 196 +       .remove         = lb035q02_panel_remove,
 197 +
 198 +       .enable         = lb035q02_panel_enable,
 199 +       .disable        = lb035q02_panel_disable,
 200 +       .suspend        = lb035q02_panel_suspend,
 201 +       .resume         = lb035q02_panel_resume,
 202 +
 203 +       .driver         = {
 204 +               .name   = "lgphilips_lb035q02_panel",
 205 +               .owner  = THIS_MODULE,
 206 +       },
 207 +};
 208 +
 209 +static int __devinit lb035q02_panel_spi_probe(struct spi_device *spi)
 210 +{
 211 +       spidev = spi;
 212 +       return 0;
 213 +}
 214 +
 215 +static int __devexit lb035q02_panel_spi_remove(struct spi_device *spi)
 216 +{
 217 +       return 0;
 218 +}
 219 +
 220 +static struct spi_driver lb035q02_spi_driver = {
 221 +       .driver         = {
 222 +               .name   = "lgphilips_lb035q02_panel-spi",
 223 +               .owner  = THIS_MODULE,
 224 +       },
 225 +       .probe          = lb035q02_panel_spi_probe,
 226 +       .remove         = __devexit_p (lb035q02_panel_spi_remove),
 227 +};
 228 +
 229 +static int __init lb035q02_panel_drv_init(void)
 230 +{
 231 +       int ret;
 232 +       ret = spi_register_driver(&lb035q02_spi_driver);
 233 +       if (ret != 0)
 234 +               pr_err("lgphilips_lb035q02: Unable to register SPI driver: %d\n", ret);
 235 +
 236 +       ret = omap_dss_register_driver(&lb035q02_driver);
 237 +       if (ret != 0)
 238 +               pr_err("lgphilips_lb035q02: Unable to register panel driver: %d\n", ret);
 239 +
 240 +       return ret;
 241 +}
 242 +
 243 +static void __exit lb035q02_panel_drv_exit(void)
 244 +{
 245 +       spi_unregister_driver(&lb035q02_spi_driver);
 246 +       omap_dss_unregister_driver(&lb035q02_driver);
 247 +}
 248 +
 249 +module_init(lb035q02_panel_drv_init);
 250 +module_exit(lb035q02_panel_drv_exit);
 251 +MODULE_LICENSE("GPL");
 252 --
 253 1.6.2.4
 254