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/* u-boot driver for the Sharp LQ050W1LC1B LCM
*
* Copyright (C) 2012 by Golden Delicious Computers GmbH&Co. KG
* Author: H. Nikolaus Schaller <hns@goldelico.com>
* All rights reserved.
*
* 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 <common.h>
#include <asm/errno.h>
#include <asm/io.h>
#include <asm/arch/mux.h>
#include <asm/arch/sys_proto.h>
#include <asm/arch/gpio.h>
#include <asm/mach-types.h>
#include <twl4030.h>
#include "../gta04/dssfb.h"
#include "../gta04/panel.h"
#include "../gta04/backlight.h"
#include "LQ050W1LC1B.h"
#define mdelay(n) ({ unsigned long msec = (n); while (msec--) udelay(1000); })
#ifndef CONFIG_GOLDELICO_EXPANDER_B4
#error only for B4 board
#endif
#ifdef CONFIG_OMAP3_GTA04
#define GPIO_POWER 12 /* McBSP5-CLKX enables 5V DC/DC (backlight) for the display */
#define GPIO_BLSHUTDOWN 19 /* McBSP5-FSX controls Backlight SHUTDOWN (shutdown if high) */
#define GPIO_SHUTDOWN 20 /* McBSP5-DX controls LVDS SHUTDOWN (shutdown if low) */
#elif CONFIG_OMAP3_BEAGLE
#define GPIO_POWER 162 /* McBSP1-CLKX enables 5V DC/DC (backlight) for the display */
#define GPIO_BLSHUTDOWN 161 /* McBSP1-FSX controls Backlight SHUTDOWN (shutdown if high) */
#define GPIO_SHUTDOWN 158 /* McBSP1-DX controls LVDS SHUTDOWN (shutdown if low) */
#endif
// configure beagle board DSS for the LQ050W1LC1B
#define DVI_BACKGROUND_COLOR 0x00fadc29 // rgb(250, 220, 41)
#define DSS1_FCLK 432000000 // see figure 15-65
#define DSS1_FCLK3730 108000000 // compare table 3-34, figure 7-63 - but there are other factors
#define PIXEL_CLOCK 48336000 // approx. 48.336 MHz (will be divided from 432 MHz)
// all values are min ratings
#define VDISP 600 // vertical active area
#define VFP (621-VDISP)/3 // vertical front porch
#define VS (621-VDISP)/3 // VSYNC pulse width
#define VBP (621-VDISP)/3 // vertical back porch
#define VDS (VS+VBP) // vertical data start
#define VBL (VS+VBP+VFP) // vertical blanking period
#define VP (VDISP+VBL) // vertical cycle
#define HDISP 1024 // horizontal active area
#define HFP (1312-HDISP)/3 // horizontal front porch
#define HS (1312-HDISP)/3 // HSYNC pulse width
#define HBP (1312-HDISP)/3 // horizontal back porch
#define HDS (HS+HBP) // horizontal data start
#define HBL (HS+HBP+HFP) // horizontal blanking period
#define HP (HDISP+HBL) // horizontal cycle
int displayColumns=HDISP;
int displayLines=VDISP;
static /*const*/ struct panel_config lcm_cfg =
{
.timing_h = ((HBP-1)<<20) | ((HFP-1)<<8) | ((HS-1)<<0), /* Horizantal timing */
.timing_v = ((VBP+0)<<20) | ((VFP+0)<<8) | ((VS-1)<<0), /* Vertical timing */
// negative clock edge
// negative sync pulse
// positive DE pulse incl. HSYNC&VSYNC
.pol_freq = (1<<17)|(1<<16)|(0<<15)|(0<<14)|(0<<13)|(0<<12)|0x28, /* Pol Freq */
.divisor = (0x0001<<16)|(DSS1_FCLK/PIXEL_CLOCK), /* Pixel Clock divisor from dss1_fclk */
.lcd_size = ((HDISP-1)<<0) | ((VDISP-1)<<16), /* as defined by LCM */
.panel_type = 0x01, /* TFT */
.data_lines = 0x03, /* 24 Bit RGB */
.load_mode = 0x02, /* Frame Mode */
.panel_color = DVI_BACKGROUND_COLOR
};
int panel_reg_init(void)
{
omap_request_gpio(GPIO_SHUTDOWN);
omap_set_gpio_direction(GPIO_SHUTDOWN, 0); // output
omap_request_gpio(GPIO_POWER);
omap_set_gpio_direction(GPIO_POWER, 0); // output
omap_request_gpio(GPIO_BLSHUTDOWN);
omap_set_gpio_direction(GPIO_BLSHUTDOWN, 0); // output
return 0;
}
int panel_check(void)
{
return 0;
}
const char *panel_state(void)
{
return "?";
}
/* frontend function */
int panel_enter_state(enum panel_state new_state)
{
return 0;
}
int panel_display_onoff(int on)
{
if(on)
{
omap_set_gpio_dataout(GPIO_POWER, 1);
mdelay(10);
omap_set_gpio_dataout(GPIO_SHUTDOWN, 1);
mdelay(100);
omap_set_gpio_dataout(GPIO_BLSHUTDOWN, 0);
}
else
{
omap_set_gpio_dataout(GPIO_BLSHUTDOWN, 1);
mdelay(5);
omap_set_gpio_dataout(GPIO_SHUTDOWN, 0);
mdelay(10);
omap_set_gpio_dataout(GPIO_POWER, 0);
mdelay(200);
}
return 0;
}
int board_video_init(GraphicDevice *pGD)
{
extern int get_board_revision(void);
printf("board_video_init() LQ050W1LC1B\n");
// FIXME: here we should pass down the GPIO(s)
backlight_init(); // initialize backlight
#if defined (CONFIG_OMAP3_BEAGLE)
#define REVISION_XM 0
if(get_board_revision() == REVISION_XM) {
/* Set VAUX1 to 3.3V for GTA04E display board */
twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX1_DEDICATED,
/*TWL4030_PM_RECEIVER_VAUX1_VSEL_33*/ 0x07,
TWL4030_PM_RECEIVER_VAUX1_DEV_GRP,
TWL4030_PM_RECEIVER_DEV_GRP_P1);
udelay(5000);
}
#endif
// FIXME: here we should init the TSC and pass down the GPIO numbers and resistance values
if(panel_reg_init()) // initialize SPI
{
printf("No LCM connected\n");
return 1;
}
if (get_cpu_family() == CPU_OMAP36XX)
lcm_cfg.divisor = (0x0001<<16)|(DSS1_FCLK3730/PIXEL_CLOCK); /* get Pixel Clock divisor from dss1_fclk */
dssfb_init(&lcm_cfg);
printf("did board_video_init()\n");
return 0;
}
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