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    Subject[PATCH 07/20] omapfb: Add support for the OMAP3 EVM LCD
    Date
    From: Steve Sakoman <steve@sakoman.com>

    Add LCD support for OMAP3 EVM

    Backlight support by Arun C <arunedarath@mistralsolutions.com>

    Fixed-by: Jarkko Nikula <jarkko.nikula@gmail.com>
    Fixed-by: David Brownell <dbrownell@users.sourceforge.net>
    Signed-off-by: Steve Sakoman <steve@sakoman.com>
    Acked-by: Syed Mohammed Khasim <khasim@ti.com>
    Signed-off-by: Tony Lindgren <tony@atomide.com>
    Signed-off-by: Imre Deak <imre.deak@nokia.com>
    Acked-by: Krzysztof Helt <krzysztof.h1@wp.pl>
    ---
    drivers/video/omap/Makefile | 1 +
    drivers/video/omap/lcd_omap3evm.c | 192 +++++++++++++++++++++++++++++++++++++
    2 files changed, 193 insertions(+), 0 deletions(-)
    create mode 100644 drivers/video/omap/lcd_omap3evm.c

    diff --git a/drivers/video/omap/Makefile b/drivers/video/omap/Makefile
    index 96d2d43..4345157 100644
    --- a/drivers/video/omap/Makefile
    +++ b/drivers/video/omap/Makefile
    @@ -30,6 +30,7 @@ objs-y$(CONFIG_MACH_OMAP_APOLLON) += lcd_apollon.o
    objs-y$(CONFIG_MACH_OMAP_2430SDP) += lcd_2430sdp.o
    objs-y$(CONFIG_MACH_OMAP_3430SDP) += lcd_2430sdp.o
    objs-y$(CONFIG_MACH_OMAP2EVM) += lcd_omap2evm.o
    +objs-y$(CONFIG_MACH_OMAP3EVM) += lcd_omap3evm.o
    objs-y$(CONFIG_FB_OMAP_LCD_MIPID) += lcd_mipid.o

    omapfb-objs := $(objs-yy)
    diff --git a/drivers/video/omap/lcd_omap3evm.c b/drivers/video/omap/lcd_omap3evm.c
    new file mode 100644
    index 0000000..b6a4c2c
    --- /dev/null
    +++ b/drivers/video/omap/lcd_omap3evm.c
    @@ -0,0 +1,192 @@
    +/*
    + * LCD panel support for the TI OMAP3 EVM board
    + *
    + * Author: Steve Sakoman <steve@sakoman.com>
    + *
    + * Derived from drivers/video/omap/lcd-apollon.c
    + *
    + * This program is free software; you can redistribute it and/or modify it
    + * under the terms of the GNU General Public License as published by the
    + * Free Software Foundation; either version 2 of the License, or (at your
    + * option) any later version.
    + *
    + * 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, write to the Free Software Foundation, Inc.,
    + * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
    + */
    +
    +#include <linux/module.h>
    +#include <linux/platform_device.h>
    +#include <linux/gpio.h>
    +#include <linux/i2c/twl4030.h>
    +
    +#include <mach/mux.h>
    +#include <mach/omapfb.h>
    +#include <asm/mach-types.h>
    +
    +#define LCD_PANEL_ENABLE_GPIO 153
    +#define LCD_PANEL_LR 2
    +#define LCD_PANEL_UD 3
    +#define LCD_PANEL_INI 152
    +#define LCD_PANEL_QVGA 154
    +#define LCD_PANEL_RESB 155
    +
    +#define ENABLE_VDAC_DEDICATED 0x03
    +#define ENABLE_VDAC_DEV_GRP 0x20
    +#define ENABLE_VPLL2_DEDICATED 0x05
    +#define ENABLE_VPLL2_DEV_GRP 0xE0
    +
    +#define TWL_LED_LEDEN 0x00
    +#define TWL_PWMA_PWMAON 0x00
    +#define TWL_PWMA_PWMAOFF 0x01
    +
    +static unsigned int bklight_level;
    +
    +static int omap3evm_panel_init(struct lcd_panel *panel,
    + struct omapfb_device *fbdev)
    +{
    + gpio_request(LCD_PANEL_LR, "LCD lr");
    + gpio_request(LCD_PANEL_UD, "LCD ud");
    + gpio_request(LCD_PANEL_INI, "LCD ini");
    + gpio_request(LCD_PANEL_RESB, "LCD resb");
    + gpio_request(LCD_PANEL_QVGA, "LCD qvga");
    +
    + gpio_direction_output(LCD_PANEL_RESB, 1);
    + gpio_direction_output(LCD_PANEL_INI, 1);
    + gpio_direction_output(LCD_PANEL_QVGA, 0);
    + gpio_direction_output(LCD_PANEL_LR, 1);
    + gpio_direction_output(LCD_PANEL_UD, 1);
    +
    + twl4030_i2c_write_u8(TWL4030_MODULE_LED, 0x11, TWL_LED_LEDEN);
    + twl4030_i2c_write_u8(TWL4030_MODULE_PWMA, 0x01, TWL_PWMA_PWMAON);
    + twl4030_i2c_write_u8(TWL4030_MODULE_PWMA, 0x02, TWL_PWMA_PWMAOFF);
    + bklight_level = 100;
    +
    + return 0;
    +}
    +
    +static void omap3evm_panel_cleanup(struct lcd_panel *panel)
    +{
    + gpio_free(LCD_PANEL_QVGA);
    + gpio_free(LCD_PANEL_RESB);
    + gpio_free(LCD_PANEL_INI);
    + gpio_free(LCD_PANEL_UD);
    + gpio_free(LCD_PANEL_LR);
    +}
    +
    +static int omap3evm_panel_enable(struct lcd_panel *panel)
    +{
    + gpio_set_value(LCD_PANEL_ENABLE_GPIO, 0);
    + return 0;
    +}
    +
    +static void omap3evm_panel_disable(struct lcd_panel *panel)
    +{
    + gpio_set_value(LCD_PANEL_ENABLE_GPIO, 1);
    +}
    +
    +static unsigned long omap3evm_panel_get_caps(struct lcd_panel *panel)
    +{
    + return 0;
    +}
    +
    +static int omap3evm_bklight_setlevel(struct lcd_panel *panel,
    + unsigned int level)
    +{
    + u8 c;
    + if ((level >= 0) && (level <= 100)) {
    + c = (125 * (100 - level)) / 100 + 2;
    + twl4030_i2c_write_u8(TWL4030_MODULE_PWMA, c, TWL_PWMA_PWMAOFF);
    + bklight_level = level;
    + }
    + return 0;
    +}
    +
    +static unsigned int omap3evm_bklight_getlevel(struct lcd_panel *panel)
    +{
    + return bklight_level;
    +}
    +
    +static unsigned int omap3evm_bklight_getmaxlevel(struct lcd_panel *panel)
    +{
    + return 100;
    +}
    +
    +struct lcd_panel omap3evm_panel = {
    + .name = "omap3evm",
    + .config = OMAP_LCDC_PANEL_TFT | OMAP_LCDC_INV_VSYNC |
    + OMAP_LCDC_INV_HSYNC,
    +
    + .bpp = 16,
    + .data_lines = 18,
    + .x_res = 480,
    + .y_res = 640,
    + .hsw = 3, /* hsync_len (4) - 1 */
    + .hfp = 3, /* right_margin (4) - 1 */
    + .hbp = 39, /* left_margin (40) - 1 */
    + .vsw = 1, /* vsync_len (2) - 1 */
    + .vfp = 2, /* lower_margin */
    + .vbp = 7, /* upper_margin (8) - 1 */
    +
    + .pixel_clock = 26000,
    +
    + .init = omap3evm_panel_init,
    + .cleanup = omap3evm_panel_cleanup,
    + .enable = omap3evm_panel_enable,
    + .disable = omap3evm_panel_disable,
    + .get_caps = omap3evm_panel_get_caps,
    + .set_bklight_level = omap3evm_bklight_setlevel,
    + .get_bklight_level = omap3evm_bklight_getlevel,
    + .get_bklight_max = omap3evm_bklight_getmaxlevel,
    +};
    +
    +static int omap3evm_panel_probe(struct platform_device *pdev)
    +{
    + omapfb_register_panel(&omap3evm_panel);
    + return 0;
    +}
    +
    +static int omap3evm_panel_remove(struct platform_device *pdev)
    +{
    + return 0;
    +}
    +
    +static int omap3evm_panel_suspend(struct platform_device *pdev,
    + pm_message_t mesg)
    +{
    + return 0;
    +}
    +
    +static int omap3evm_panel_resume(struct platform_device *pdev)
    +{
    + return 0;
    +}
    +
    +struct platform_driver omap3evm_panel_driver = {
    + .probe = omap3evm_panel_probe,
    + .remove = omap3evm_panel_remove,
    + .suspend = omap3evm_panel_suspend,
    + .resume = omap3evm_panel_resume,
    + .driver = {
    + .name = "omap3evm_lcd",
    + .owner = THIS_MODULE,
    + },
    +};
    +
    +static int __init omap3evm_panel_drv_init(void)
    +{
    + return platform_driver_register(&omap3evm_panel_driver);
    +}
    +
    +static void __exit omap3evm_panel_drv_exit(void)
    +{
    + platform_driver_unregister(&omap3evm_panel_driver);
    +}
    +
    +module_init(omap3evm_panel_drv_init);
    +module_exit(omap3evm_panel_drv_exit);
    --
    1.6.3.2


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