On Thu, 4 Jun 2009 20:52:33 +0300
Imre Deak <imre.deak@xxxxxxxxx> wrote:
> From: Steve Sakoman <steve@xxxxxxxxxxx>
>
> Add LCD support for OMAP3 EVM
>
> Backlight support by Arun C <arunedarath@xxxxxxxxxxxxxxxxxxxx>
>
> Signed-off-by: Steve Sakoman <steve@xxxxxxxxxxx>
> Acked-by: Syed Mohammed Khasim <khasim@xxxxxx>
> Signed-off-by: Tony Lindgren <tony@xxxxxxxxxxx>
> Fixed-by: Jarkko Nikula <jarkko.nikula@xxxxxxxxx>
> Fixed-by: David Brownell <dbrownell@xxxxxxxxxxxxxxxxxxxxx>
> Signed-off-by: Imre Deak <imre.deak@xxxxxxxxx>
> ---
> drivers/video/omap/Makefile | 1 +
> drivers/video/omap/lcd_omap3evm.c | 191 +++++++++++++++++++++++++++++++++++++
> 2 files changed, 192 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..1c3d814
> --- /dev/null
> +++ b/drivers/video/omap/lcd_omap3evm.c
> @@ -0,0 +1,191 @@
> +/*
> + * LCD panel support for the TI OMAP3 EVM board
> + *
> + * Author: Steve Sakoman <steve@xxxxxxxxxxx>
> + *
> + * 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 LCD_XRES 480
> +#define LCD_YRES 640
> +#define LCD_PIXCLOCK 26000 /* in kHz */
> +
You can drop defines used only once. There are no such defines for other panels.
> +#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)
> +{
Should the requested gpios be freed?
> +}
> +
> +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 = LCD_XRES,
> + .y_res = LCD_YRES,
> + .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 = LCD_PIXCLOCK,
> +
> + .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);
> --
> 1.6.3.1
>
>
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