2009-09-22 19:46:45 -04:00
|
|
|
/*
|
|
|
|
* LCD panel support for the TI 2430SDP board
|
|
|
|
*
|
|
|
|
* Copyright (C) 2007 MontaVista
|
|
|
|
* Author: Hunyue Yau <hyau@mvista.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/delay.h>
|
|
|
|
#include <linux/gpio.h>
|
2009-12-13 14:05:51 -05:00
|
|
|
#include <linux/i2c/twl.h>
|
2009-09-22 19:46:45 -04:00
|
|
|
|
2009-10-20 12:40:47 -04:00
|
|
|
#include <plat/mux.h>
|
2009-09-22 19:46:45 -04:00
|
|
|
#include <asm/mach-types.h>
|
|
|
|
|
2009-08-03 08:06:36 -04:00
|
|
|
#include "omapfb.h"
|
|
|
|
|
2009-09-22 19:46:45 -04:00
|
|
|
#define SDP2430_LCD_PANEL_BACKLIGHT_GPIO 91
|
|
|
|
#define SDP2430_LCD_PANEL_ENABLE_GPIO 154
|
|
|
|
#define SDP3430_LCD_PANEL_BACKLIGHT_GPIO 24
|
|
|
|
#define SDP3430_LCD_PANEL_ENABLE_GPIO 28
|
|
|
|
|
|
|
|
static unsigned backlight_gpio;
|
|
|
|
static unsigned enable_gpio;
|
|
|
|
|
|
|
|
#define LCD_PIXCLOCK_MAX 5400 /* freq 5.4 MHz */
|
|
|
|
#define PM_RECEIVER TWL4030_MODULE_PM_RECEIVER
|
|
|
|
#define ENABLE_VAUX2_DEDICATED 0x09
|
|
|
|
#define ENABLE_VAUX2_DEV_GRP 0x20
|
2009-09-22 19:46:48 -04:00
|
|
|
#define ENABLE_VAUX3_DEDICATED 0x03
|
|
|
|
#define ENABLE_VAUX3_DEV_GRP 0x20
|
2009-09-22 19:46:45 -04:00
|
|
|
|
2009-09-22 19:46:48 -04:00
|
|
|
#define ENABLE_VPLL2_DEDICATED 0x05
|
|
|
|
#define ENABLE_VPLL2_DEV_GRP 0xE0
|
|
|
|
#define TWL4030_VPLL2_DEV_GRP 0x33
|
|
|
|
#define TWL4030_VPLL2_DEDICATED 0x36
|
2009-09-22 19:46:45 -04:00
|
|
|
|
2009-12-13 15:23:33 -05:00
|
|
|
#define t2_out(c, r, v) twl_i2c_write_u8(c, r, v)
|
2009-09-22 19:46:45 -04:00
|
|
|
|
|
|
|
|
|
|
|
static int sdp2430_panel_init(struct lcd_panel *panel,
|
|
|
|
struct omapfb_device *fbdev)
|
|
|
|
{
|
|
|
|
if (machine_is_omap_3430sdp()) {
|
|
|
|
enable_gpio = SDP3430_LCD_PANEL_ENABLE_GPIO;
|
|
|
|
backlight_gpio = SDP3430_LCD_PANEL_BACKLIGHT_GPIO;
|
|
|
|
} else {
|
|
|
|
enable_gpio = SDP2430_LCD_PANEL_ENABLE_GPIO;
|
|
|
|
backlight_gpio = SDP2430_LCD_PANEL_BACKLIGHT_GPIO;
|
|
|
|
}
|
|
|
|
|
|
|
|
gpio_request(enable_gpio, "LCD enable"); /* LCD panel */
|
|
|
|
gpio_request(backlight_gpio, "LCD bl"); /* LCD backlight */
|
|
|
|
gpio_direction_output(enable_gpio, 0);
|
|
|
|
gpio_direction_output(backlight_gpio, 0);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void sdp2430_panel_cleanup(struct lcd_panel *panel)
|
|
|
|
{
|
|
|
|
gpio_free(backlight_gpio);
|
|
|
|
gpio_free(enable_gpio);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int sdp2430_panel_enable(struct lcd_panel *panel)
|
|
|
|
{
|
|
|
|
u8 ded_val, ded_reg;
|
|
|
|
u8 grp_val, grp_reg;
|
|
|
|
|
|
|
|
if (machine_is_omap_3430sdp()) {
|
|
|
|
ded_reg = TWL4030_VAUX3_DEDICATED;
|
|
|
|
ded_val = ENABLE_VAUX3_DEDICATED;
|
|
|
|
grp_reg = TWL4030_VAUX3_DEV_GRP;
|
|
|
|
grp_val = ENABLE_VAUX3_DEV_GRP;
|
|
|
|
|
|
|
|
if (omap_rev() > OMAP3430_REV_ES1_0) {
|
|
|
|
t2_out(PM_RECEIVER, ENABLE_VPLL2_DEDICATED,
|
|
|
|
TWL4030_VPLL2_DEDICATED);
|
|
|
|
t2_out(PM_RECEIVER, ENABLE_VPLL2_DEV_GRP,
|
|
|
|
TWL4030_VPLL2_DEV_GRP);
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
ded_reg = TWL4030_VAUX2_DEDICATED;
|
|
|
|
ded_val = ENABLE_VAUX2_DEDICATED;
|
|
|
|
grp_reg = TWL4030_VAUX2_DEV_GRP;
|
|
|
|
grp_val = ENABLE_VAUX2_DEV_GRP;
|
|
|
|
}
|
|
|
|
|
|
|
|
gpio_set_value(enable_gpio, 1);
|
|
|
|
gpio_set_value(backlight_gpio, 1);
|
|
|
|
|
|
|
|
if (0 != t2_out(PM_RECEIVER, ded_val, ded_reg))
|
|
|
|
return -EIO;
|
|
|
|
if (0 != t2_out(PM_RECEIVER, grp_val, grp_reg))
|
|
|
|
return -EIO;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void sdp2430_panel_disable(struct lcd_panel *panel)
|
|
|
|
{
|
|
|
|
gpio_set_value(enable_gpio, 0);
|
|
|
|
gpio_set_value(backlight_gpio, 0);
|
|
|
|
if (omap_rev() > OMAP3430_REV_ES1_0) {
|
|
|
|
t2_out(PM_RECEIVER, 0x0, TWL4030_VPLL2_DEDICATED);
|
|
|
|
t2_out(PM_RECEIVER, 0x0, TWL4030_VPLL2_DEV_GRP);
|
|
|
|
msleep(4);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static unsigned long sdp2430_panel_get_caps(struct lcd_panel *panel)
|
|
|
|
{
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
struct lcd_panel sdp2430_panel = {
|
|
|
|
.name = "sdp2430",
|
|
|
|
.config = OMAP_LCDC_PANEL_TFT | OMAP_LCDC_INV_VSYNC |
|
|
|
|
OMAP_LCDC_INV_HSYNC,
|
|
|
|
|
|
|
|
.bpp = 16,
|
|
|
|
.data_lines = 16,
|
|
|
|
.x_res = 240,
|
|
|
|
.y_res = 320,
|
|
|
|
.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_MAX,
|
|
|
|
|
|
|
|
.init = sdp2430_panel_init,
|
|
|
|
.cleanup = sdp2430_panel_cleanup,
|
2009-09-22 19:46:48 -04:00
|
|
|
.enable = sdp2430_panel_enable,
|
2009-09-22 19:46:45 -04:00
|
|
|
.disable = sdp2430_panel_disable,
|
|
|
|
.get_caps = sdp2430_panel_get_caps,
|
|
|
|
};
|
|
|
|
|
|
|
|
static int sdp2430_panel_probe(struct platform_device *pdev)
|
|
|
|
{
|
|
|
|
omapfb_register_panel(&sdp2430_panel);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int sdp2430_panel_remove(struct platform_device *pdev)
|
|
|
|
{
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int sdp2430_panel_suspend(struct platform_device *pdev,
|
|
|
|
pm_message_t mesg)
|
|
|
|
{
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int sdp2430_panel_resume(struct platform_device *pdev)
|
|
|
|
{
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
struct platform_driver sdp2430_panel_driver = {
|
|
|
|
.probe = sdp2430_panel_probe,
|
|
|
|
.remove = sdp2430_panel_remove,
|
2009-09-22 19:46:48 -04:00
|
|
|
.suspend = sdp2430_panel_suspend,
|
2009-09-22 19:46:45 -04:00
|
|
|
.resume = sdp2430_panel_resume,
|
|
|
|
.driver = {
|
|
|
|
.name = "sdp2430_lcd",
|
|
|
|
.owner = THIS_MODULE,
|
|
|
|
},
|
|
|
|
};
|
|
|
|
|
|
|
|
static int __init sdp2430_panel_drv_init(void)
|
|
|
|
{
|
|
|
|
return platform_driver_register(&sdp2430_panel_driver);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void __exit sdp2430_panel_drv_exit(void)
|
|
|
|
{
|
|
|
|
platform_driver_unregister(&sdp2430_panel_driver);
|
|
|
|
}
|
|
|
|
|
|
|
|
module_init(sdp2430_panel_drv_init);
|
|
|
|
module_exit(sdp2430_panel_drv_exit);
|