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[ARM] 4952/1: magician: add LCD detection, LCD power switching, update pxafb settings 

All magician devices I've encountered so far have featured the Toppoly
TD028STEB1 display, so the Samsung LTP280QV support is untested.
The power-on sequence is not correct because pxafb doesn't yet support
enabling the LCD controller in the middle of the it.

Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Philipp Zabel 2008-04-09 19:27:10 +01:00 committed by Russell King
parent 350d115d1e
commit e07ff8d809
2 changed files with 116 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

121
arch/arm/mach-pxa/magician.c
View File

@ -16,6 +16,7 @@
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/delay.h>
#include <linux/gpio_keys.h>
#include <linux/input.h>
#include <linux/mfd/htc-egpio.h>
@ -144,7 +145,7 @@ static struct platform_device egpio = {
};
/*
* LCD - Toppoly TD028STEB1
* LCD - Toppoly TD028STEB1 or Samsung LTP280QV
*/
static struct pxafb_mode_info toppoly_modes[] = {
@ -163,12 +164,99 @@ static struct pxafb_mode_info toppoly_modes[] = {
},
};
static struct pxafb_mode_info samsung_modes[] = {
{
.pixclock = 96153,
.bpp = 16,
.xres = 240,
.yres = 320,
.hsync_len = 8,
.vsync_len = 4,
.left_margin = 9,
.upper_margin = 4,
.right_margin = 9,
.lower_margin = 4,
.sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
},
};
static void toppoly_lcd_power(int on, struct fb_var_screeninfo *si)
{
pr_debug("Toppoly LCD power\n");
if (on) {
pr_debug("on\n");
gpio_set_value(EGPIO_MAGICIAN_TOPPOLY_POWER, 1);
gpio_set_value(GPIO106_MAGICIAN_LCD_POWER_3, 1);
udelay(2000);
gpio_set_value(EGPIO_MAGICIAN_LCD_POWER, 1);
udelay(2000);
/* FIXME: enable LCDC here */
udelay(2000);
gpio_set_value(GPIO104_MAGICIAN_LCD_POWER_1, 1);
udelay(2000);
gpio_set_value(GPIO105_MAGICIAN_LCD_POWER_2, 1);
} else {
pr_debug("off\n");
msleep(15);
gpio_set_value(GPIO105_MAGICIAN_LCD_POWER_2, 0);
udelay(500);
gpio_set_value(GPIO104_MAGICIAN_LCD_POWER_1, 0);
udelay(1000);
gpio_set_value(GPIO106_MAGICIAN_LCD_POWER_3, 0);
gpio_set_value(EGPIO_MAGICIAN_LCD_POWER, 0);
}
}
static void samsung_lcd_power(int on, struct fb_var_screeninfo *si)
{
pr_debug("Samsung LCD power\n");
if (on) {
pr_debug("on\n");
if (system_rev < 3)
gpio_set_value(GPIO75_MAGICIAN_SAMSUNG_POWER, 1);
else
gpio_set_value(EGPIO_MAGICIAN_LCD_POWER, 1);
mdelay(10);
gpio_set_value(GPIO106_MAGICIAN_LCD_POWER_3, 1);
mdelay(10);
gpio_set_value(GPIO104_MAGICIAN_LCD_POWER_1, 1);
mdelay(30);
gpio_set_value(GPIO105_MAGICIAN_LCD_POWER_2, 1);
mdelay(10);
} else {
pr_debug("off\n");
mdelay(10);
gpio_set_value(GPIO105_MAGICIAN_LCD_POWER_2, 0);
mdelay(30);
gpio_set_value(GPIO104_MAGICIAN_LCD_POWER_1, 0);
mdelay(10);
gpio_set_value(GPIO106_MAGICIAN_LCD_POWER_3, 0);
mdelay(10);
if (system_rev < 3)
gpio_set_value(GPIO75_MAGICIAN_SAMSUNG_POWER, 0);
else
gpio_set_value(EGPIO_MAGICIAN_LCD_POWER, 0);
}
}
static struct pxafb_mach_info toppoly_info = {
.modes = toppoly_modes,
.num_modes = 1,
.fixed_modes = 1,
.lccr0 = LCCR0_Color | LCCR0_Sngl | LCCR0_Act,
.lccr3 = LCCR3_PixRsEdg,
.modes = toppoly_modes,
.num_modes = 1,
.fixed_modes = 1,
.lccr0 = LCCR0_Color | LCCR0_Sngl | LCCR0_Act,
.lccr3 = LCCR3_PixRsEdg,
.pxafb_lcd_power = toppoly_lcd_power,
};
static struct pxafb_mach_info samsung_info = {
.modes = samsung_modes,
.num_modes = 1,
.fixed_modes = 1,
.lccr0 = LCCR0_LDDALT | LCCR0_Color | LCCR0_Sngl | LCCR0_Act,
.lccr3 = LCCR3_PixFlEdg,
.pxafb_lcd_power = samsung_lcd_power,
};
/*
@ -358,12 +446,31 @@ static struct platform_device *devices[] __initdata = {
static void __init magician_init(void)
{
void __iomem *cpld;
int lcd_select;
platform_add_devices(devices, ARRAY_SIZE(devices));
pxa_set_i2c_info(NULL);
pxa_set_mci_info(&magician_mci_info);
pxa_set_ohci_info(&magician_ohci_info);
pxa_set_ficp_info(&magician_ficp_info);
set_pxa_fb_info(&toppoly_info);
/* Check LCD type we have */
cpld = ioremap_nocache(PXA_CS3_PHYS, 0x1000);
if (cpld) {
u8 board_id = __raw_readb(cpld+0x14);
system_rev = board_id & 0x7;
lcd_select = board_id & 0x8;
iounmap(cpld);
pr_info("LCD type: %s\n", lcd_select ? "Samsung" : "Toppoly");
if (lcd_select && (system_rev < 3))
pxa_gpio_mode(GPIO75_MAGICIAN_SAMSUNG_POWER_MD);
pxa_gpio_mode(GPIO104_MAGICIAN_LCD_POWER_1_MD);
pxa_gpio_mode(GPIO105_MAGICIAN_LCD_POWER_2_MD);
pxa_gpio_mode(GPIO106_MAGICIAN_LCD_POWER_3_MD);
set_pxa_fb_info(lcd_select ? &samsung_info : &toppoly_info);
} else
pr_err("LCD detection: CPLD mapping failed\n");
}

2
include/asm-arm/arch-pxa/magician.h
View File

@ -35,6 +35,7 @@
#define GPIO48_MAGICIAN_UNKNOWN 48
#define GPIO56_MAGICIAN_UNKNOWN 56
#define GPIO57_MAGICIAN_CAM_RESET 57
#define GPIO75_MAGICIAN_SAMSUNG_POWER 75
#define GPIO83_MAGICIAN_nIR_EN 83
#define GPIO86_MAGICIAN_GSM_RESET 86
#define GPIO87_MAGICIAN_GSM_SELECT 87
@ -82,6 +83,7 @@
#define GPIO48_MAGICIAN_UNKNOWN_MD (48 | GPIO_OUT)
#define GPIO56_MAGICIAN_UNKNOWN_MD (56 | GPIO_OUT)
#define GPIO57_MAGICIAN_CAM_RESET_MD (57 | GPIO_OUT)
#define GPIO75_MAGICIAN_SAMSUNG_POWER_MD (75 | GPIO_OUT)
#define GPIO83_MAGICIAN_nIR_EN_MD (83 | GPIO_OUT)
#define GPIO86_MAGICIAN_GSM_RESET_MD (86 | GPIO_OUT)
#define GPIO87_MAGICIAN_GSM_SELECT_MD (87 | GPIO_OUT)