static ssize_t lcd_proc_write(struct file *file, const char __user *buf,
size_t count, loff_t *pos)
{
struct toshiba_acpi_dev *dev = PDE_DATA(file_inode(file));
char cmd[42];
size_t len;
int value;
int ret;
int levels = dev->backlight_dev->props.max_brightness + 1;
len = min(count, sizeof(cmd) - 1);
if (copy_from_user(cmd, buf, len))
return -EFAULT;
cmd[len] = '\0';
if (sscanf(cmd, " brightness : %i", &value) == 1 &&
value >= 0 && value < levels) {
ret = set_lcd_brightness(dev, value);
if (ret == 0)
ret = count;
} else {
ret = -EINVAL;
}
return ret;
}
////////////////////////////////////////////////////////////////////////////////
// disable_lcd
// PURPOSE: Turn off the backlight, disable the display and stop the LCD controler.
// PARAMS: None.
// RETURNS: Nothing
////////////////////////////////////////////////////////////////////////////////
void
disable_lcd(void)
{
set_lcd_brightness(0);
ucb1200_disable_lcd();
LCCR0 = 0x38;
}
static int cmd_lcd_brightness(cmd_tbl_t *cmdtp, int flag,
int argc, char * const argv[])
{
if (argc < 2)
return cmd_usage(cmdtp);
return set_lcd_brightness(argv[1]);
}
static int toshiba_acpi_setup_backlight(struct toshiba_acpi_dev *dev)
{
struct backlight_properties props;
int brightness;
int ret;
bool enabled;
/*
* Some machines don't support the backlight methods at all, and
* others support it read-only. Either of these is pretty useless,
* so only register the backlight device if the backlight method
* supports both reads and writes.
*/
brightness = __get_lcd_brightness(dev);
if (brightness < 0)
return 0;
ret = set_lcd_brightness(dev, brightness);
if (ret) {
pr_debug("Backlight method is read-only, disabling backlight support\n");
return 0;
}
/* Determine whether or not BIOS supports transflective backlight */
ret = get_tr_backlight_status(dev, &enabled);
dev->tr_backlight_supported = !ret;
memset(&props, 0, sizeof(props));
props.type = BACKLIGHT_PLATFORM;
props.max_brightness = HCI_LCD_BRIGHTNESS_LEVELS - 1;
/* adding an extra level and having 0 change to transflective mode */
if (dev->tr_backlight_supported)
props.max_brightness++;
dev->backlight_dev = backlight_device_register("toshiba",
&dev->acpi_dev->dev,
dev,
&toshiba_backlight_data,
&props);
if (IS_ERR(dev->backlight_dev)) {
ret = PTR_ERR(dev->backlight_dev);
pr_err("Could not register toshiba backlight device\n");
dev->backlight_dev = NULL;
return ret;
}
dev->backlight_dev->props.brightness = brightness;
return 0;
}
////////////////////////////////////////////////////////////////////////////////
// init_lcd
// PURPOSE: Initializes the LCD controler, enable the display and set the backlight.
// PARAMS: None.
// RETURNS: Nothing
////////////////////////////////////////////////////////////////////////////////
void
init_lcd(void)
{
int i;
LCCR0 = 0x38;
LCSR = 0xfff;
LCCR1 = (240 - 16) | (5 << 10) | (9 << 16) | (61 << 24);
LCCR2 = 320 - 1;
LCCR3 = 25 | (70 << 8);
DBAR1 = (u32) &frame_buffer;
frame_buffer[0] = 0x2000;
for (i=1; i<=15; i++) frame_buffer[i] = 0;
for (i=16; i <= 16+(320*240); i++) frame_buffer[i] = 0x0000;
LCCR0 = 0x39;
ucb1200_init();
ucb1200_enable_lcd();
set_lcd_brightness(15);
}
int misc_init_r(void)
{
volatile immap_t *im = (immap_t *)CONFIG_SYS_IMMR;
/*
* Re-configure flash setup using auto-detected info
*/
if (flash_info[1].size > 0) {
out_be32(&im->sysconf.lpcs1aw,
CSAW_START(gd->bd->bi_flashstart + flash_info[1].size) |
CSAW_STOP(gd->bd->bi_flashstart + flash_info[1].size,
flash_info[1].size));
sync_law(&im->sysconf.lpcs1aw);
/*
* Re-check to get correct base address
*/
flash_get_size (gd->bd->bi_flashstart + flash_info[1].size, 1);
} else {
/* Disable Bank 1 */
out_be32(&im->sysconf.lpcs1aw, 0x01000100);
sync_law(&im->sysconf.lpcs1aw);
}
out_be32(&im->sysconf.lpcs0aw,
CSAW_START(gd->bd->bi_flashstart) |
CSAW_STOP(gd->bd->bi_flashstart, flash_info[0].size));
sync_law(&im->sysconf.lpcs0aw);
/*
* Re-check to get correct base address
*/
flash_get_size (gd->bd->bi_flashstart, 0);
/*
* Re-do flash protection upon new addresses
*/
flash_protect (FLAG_PROTECT_CLEAR,
gd->bd->bi_flashstart, 0xffffffff,
&flash_info[0]);
/* Monitor protection ON by default */
flash_protect (FLAG_PROTECT_SET,
CONFIG_SYS_MONITOR_BASE,
CONFIG_SYS_MONITOR_BASE + CONFIG_SYS_MONITOR_LEN - 1,
&flash_info[0]);
/* Environment protection ON by default */
flash_protect (FLAG_PROTECT_SET,
CONFIG_ENV_ADDR,
CONFIG_ENV_ADDR + CONFIG_ENV_SECT_SIZE - 1,
&flash_info[0]);
#ifdef CONFIG_ENV_ADDR_REDUND
/* Redundant environment protection ON by default */
flash_protect (FLAG_PROTECT_SET,
CONFIG_ENV_ADDR_REDUND,
CONFIG_ENV_ADDR_REDUND + CONFIG_ENV_SECT_SIZE - 1,
&flash_info[0]);
#endif
#ifdef CONFIG_FSL_DIU_FB
set_lcd_brightness(0);
/* Switch LCD-Backlight and LVDS-Interface on */
setbits_be32(&im->gpio.gpdir, 0x01040000);
clrsetbits_be32(&im->gpio.gpdat, 0x01000000, 0x00040000);
#endif
#if defined(CONFIG_HARD_I2C)
if (!getenv("ethaddr")) {
uchar buf[6];
uchar ifm_oui[3] = { 0, 2, 1, };
int ret;
/* I2C-0 for on-board eeprom */
i2c_set_bus_num(CONFIG_SYS_I2C_EEPROM_BUS_NUM);
/* Read ethaddr from EEPROM */
ret = i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR,
CONFIG_SYS_I2C_EEPROM_MAC_OFFSET, 1, buf, 6);
if (ret != 0) {
printf("Error: Unable to read MAC from I2C"
" EEPROM at address %02X:%02X\n",
CONFIG_SYS_I2C_EEPROM_ADDR,
CONFIG_SYS_I2C_EEPROM_MAC_OFFSET);
return 1;
}
/* Owned by IFM ? */
if (memcmp(buf, ifm_oui, sizeof(ifm_oui))) {
printf("Illegal MAC address in EEPROM: %pM\n", buf);
return 1;
}
eth_setenv_enetaddr("ethaddr", buf);
}
#endif /* defined(CONFIG_HARD_I2C) */
return 0;
}
static int set_lcd_status(struct backlight_device *bd)
{
struct toshiba_acpi_dev *dev = bl_get_data(bd);
return set_lcd_brightness(dev, bd->props.brightness);
}
