From 29fb8d970cf88080881269f99b886fd53534603c Mon Sep 17 00:00:00 2001 From: Steve Sakoman Date: Thu, 17 Dec 2009 15:05:30 -0800 Subject: [PATCH 29/30] OMAP: DSS2: Add support for LG Philips LB035Q02 panel --- drivers/video/omap2/displays/Kconfig | 6 + drivers/video/omap2/displays/Makefile | 1 + .../omap2/displays/panel-lgphilips-lb035q02.c | 206 ++++++++++++++++++++ 3 files changed, 213 insertions(+), 0 deletions(-) create mode 100644 drivers/video/omap2/displays/panel-lgphilips-lb035q02.c diff --git a/drivers/video/omap2/displays/Kconfig b/drivers/video/omap2/displays/Kconfig index 4229a28..875250a 100644 --- a/drivers/video/omap2/displays/Kconfig +++ b/drivers/video/omap2/displays/Kconfig @@ -7,6 +7,12 @@ config PANEL_GENERIC Generic panel driver. Used for DVI output for Beagle and OMAP3 SDP. +config PANEL_LGPHILIPS_LB035Q02 + tristate "LG.Philips LB035Q02 LCD Panel" + depends on OMAP2_DSS + help + LCD Panel used on Overo Palo35 + config PANEL_SAMSUNG_LTE430WQ_F0C tristate "Samsung LTE430WQ-F0C LCD Panel" depends on OMAP2_DSS diff --git a/drivers/video/omap2/displays/Makefile b/drivers/video/omap2/displays/Makefile index 9317445..f8e6c52 100644 --- a/drivers/video/omap2/displays/Makefile +++ b/drivers/video/omap2/displays/Makefile @@ -1,4 +1,5 @@ obj-$(CONFIG_PANEL_GENERIC) += panel-generic.o +obj-$(CONFIG_PANEL_LGPHILIPS_LB035Q02) += panel-lgphilips-lb035q02.o obj-$(CONFIG_PANEL_SAMSUNG_LTE430WQ_F0C) += panel-samsung-lte430wq-f0c.o obj-$(CONFIG_PANEL_SHARP_LS037V7DW01) += panel-sharp-ls037v7dw01.o obj-$(CONFIG_PANEL_SHARP_LQ043T1DG01) += panel-sharp-lq043t1dg01.o diff --git a/drivers/video/omap2/displays/panel-lgphilips-lb035q02.c b/drivers/video/omap2/displays/panel-lgphilips-lb035q02.c new file mode 100644 index 0000000..22dc865 --- /dev/null +++ b/drivers/video/omap2/displays/panel-lgphilips-lb035q02.c @@ -0,0 +1,206 @@ +/* + * LCD panel driver for LG.Philips LB035Q02 + * + * Author: Steve Sakoman + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program. If not, see . + */ + +#include +#include +#include + +#include + +static struct spi_device *spidev; + +static struct omap_video_timings lb035q02_timings = { + .x_res = 320, + .y_res = 240, + + .pixel_clock = 6500, + + .hsw = 2, + .hfp = 20, + .hbp = 68, + + .vsw = 2, + .vfp = 4, + .vbp = 18, +}; + +static int lb035q02_panel_probe(struct omap_dss_device *dssdev) +{ + dssdev->panel.config = OMAP_DSS_LCD_TFT | OMAP_DSS_LCD_IVS | + OMAP_DSS_LCD_IHS; + dssdev->panel.timings = lb035q02_timings; + + return 0; +} + +static void lb035q02_panel_remove(struct omap_dss_device *dssdev) +{ +} + +static int lb035q02_write_reg(u8 reg, u16 val) +{ + struct spi_message msg; + struct spi_transfer index_xfer = { + .len = 3, + .cs_change = 1, + }; + struct spi_transfer value_xfer = { + .len = 3, + }; + u8 buffer[16]; + + spi_message_init(&msg); + + /* register index */ + buffer[0] = 0x70; + buffer[1] = 0x00; + buffer[2] = reg & 0x7f; + index_xfer.tx_buf = buffer; + spi_message_add_tail(&index_xfer, &msg); + + /* register value */ + buffer[4] = 0x72; + buffer[5] = val >> 8; + buffer[6] = val; + value_xfer.tx_buf = buffer + 4; + spi_message_add_tail(&value_xfer, &msg); + + return spi_sync(spidev, &msg); +} + +static int lb035q02_panel_enable(struct omap_dss_device *dssdev) +{ + int r = 0; + + pr_info("lgphilips_lb035q02: panel_enable: 0x%08x\n", spidev); + /* wait couple of vsyncs until enabling the LCD */ + msleep(50); + + if (dssdev->platform_enable) + r = dssdev->platform_enable(dssdev); + + /* Panel init sequence from page 28 of the spec */ + lb035q02_write_reg(0x01, 0x6300); + lb035q02_write_reg(0x02, 0x0200); + lb035q02_write_reg(0x03, 0x0177); + lb035q02_write_reg(0x04, 0x04c7); + lb035q02_write_reg(0x05, 0xffc0); + lb035q02_write_reg(0x06, 0xe806); + lb035q02_write_reg(0x0a, 0x4008); + lb035q02_write_reg(0x0b, 0x0000); + lb035q02_write_reg(0x0d, 0x0030); + lb035q02_write_reg(0x0e, 0x2800); + lb035q02_write_reg(0x0f, 0x0000); + lb035q02_write_reg(0x16, 0x9f80); + lb035q02_write_reg(0x17, 0x0a0f); + lb035q02_write_reg(0x1e, 0x00c1); + lb035q02_write_reg(0x30, 0x0300); + lb035q02_write_reg(0x31, 0x0007); + lb035q02_write_reg(0x32, 0x0000); + lb035q02_write_reg(0x33, 0x0000); + lb035q02_write_reg(0x34, 0x0707); + lb035q02_write_reg(0x35, 0x0004); + lb035q02_write_reg(0x36, 0x0302); + lb035q02_write_reg(0x37, 0x0202); + lb035q02_write_reg(0x3a, 0x0a0d); + lb035q02_write_reg(0x3b, 0x0806); + + return r; +} + +static void lb035q02_panel_disable(struct omap_dss_device *dssdev) +{ + if (dssdev->platform_disable) + dssdev->platform_disable(dssdev); + + /* wait at least 5 vsyncs after disabling the LCD */ + + msleep(100); +} + +static int lb035q02_panel_suspend(struct omap_dss_device *dssdev) +{ + pr_info("lgphilips_lb035q02: panel_suspend\n"); + lb035q02_panel_disable(dssdev); + return 0; +} + +static int lb035q02_panel_resume(struct omap_dss_device *dssdev) +{ + pr_info("lgphilips_lb035q02: panel_resume\n"); + return lb035q02_panel_enable(dssdev); +} + +static struct omap_dss_driver lb035q02_driver = { + .probe = lb035q02_panel_probe, + .remove = lb035q02_panel_remove, + + .enable = lb035q02_panel_enable, + .disable = lb035q02_panel_disable, + .suspend = lb035q02_panel_suspend, + .resume = lb035q02_panel_resume, + + .driver = { + .name = "lgphilips_lb035q02_panel", + .owner = THIS_MODULE, + }, +}; + +static int __devinit lb035q02_panel_spi_probe(struct spi_device *spi) +{ + spidev = spi; + return 0; +} + +static int __devexit lb035q02_panel_spi_remove(struct spi_device *spi) +{ + return 0; +} + +static struct spi_driver lb035q02_spi_driver = { + .driver = { + .name = "lgphilips_lb035q02_panel-spi", + .owner = THIS_MODULE, + }, + .probe = lb035q02_panel_spi_probe, + .remove = __devexit_p (lb035q02_panel_spi_remove), +}; + +static int __init lb035q02_panel_drv_init(void) +{ + int ret; + ret = spi_register_driver(&lb035q02_spi_driver); + if (ret != 0) + pr_err("lgphilips_lb035q02: Unable to register SPI driver: %d\n", ret); + + ret = omap_dss_register_driver(&lb035q02_driver); + if (ret != 0) + pr_err("lgphilips_lb035q02: Unable to register panel driver: %d\n", ret); + + return ret; +} + +static void __exit lb035q02_panel_drv_exit(void) +{ + spi_unregister_driver(&lb035q02_spi_driver); + omap_dss_unregister_driver(&lb035q02_driver); +} + +module_init(lb035q02_panel_drv_init); +module_exit(lb035q02_panel_drv_exit); +MODULE_LICENSE("GPL"); -- 1.6.6.1