static int n8x0_panel_resume(struct omap_dss_device *dssdev)
{
struct panel_drv_data *ddata = get_drv_data(dssdev);
int r;
dev_dbg(&dssdev->dev, "resume\n");
mutex_lock(&ddata->lock);
rfbi_bus_lock();
r = n8x0_panel_power_on(dssdev);
rfbi_bus_unlock();
if (r) {
mutex_unlock(&ddata->lock);
return r;
}
dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
mutex_unlock(&ddata->lock);
return 0;
}
static int n8x0_bl_update_status(struct backlight_device *dev)
{
struct omap_dss_device *dssdev = dev_get_drvdata(&dev->dev);
struct panel_n8x0_data *bdata = get_board_data(dssdev);
struct panel_drv_data *ddata = get_drv_data(dssdev);
int r;
int level;
mutex_lock(&ddata->lock);
if (dev->props.fb_blank == FB_BLANK_UNBLANK &&
dev->props.power == FB_BLANK_UNBLANK)
level = dev->props.brightness;
else
level = 0;
dev_dbg(&dssdev->dev, "update brightness to %d\n", level);
if (!bdata->set_backlight)
r = -EINVAL;
else
r = bdata->set_backlight(dssdev, level);
mutex_unlock(&ddata->lock);
return r;
}
static int n8x0_panel_update(struct omap_dss_device *dssdev,
u16 x, u16 y, u16 w, u16 h)
{
struct panel_drv_data *ddata = get_drv_data(dssdev);
u16 dw, dh;
dev_dbg(&dssdev->dev, "update\n");
dw = dssdev->panel.timings.x_res;
dh = dssdev->panel.timings.y_res;
if (x != 0 || y != 0 || w != dw || h != dh) {
dev_err(&dssdev->dev, "invaid update region %d, %d, %d, %d\n",
x, y, w, h);
return -EINVAL;
}
mutex_lock(&ddata->lock);
rfbi_bus_lock();
blizzard_ctrl_setup_update(dssdev, x, y, w, h);
omap_rfbi_update(dssdev, update_done, NULL);
mutex_unlock(&ddata->lock);
return 0;
}
static int n8x0_panel_sync(struct omap_dss_device *dssdev)
{
struct panel_drv_data *ddata = get_drv_data(dssdev);
dev_dbg(&dssdev->dev, "sync\n");
mutex_lock(&ddata->lock);
rfbi_bus_lock();
rfbi_bus_unlock();
mutex_unlock(&ddata->lock);
return 0;
}
static void n8x0_panel_remove(struct omap_dss_device *dssdev)
{
struct panel_drv_data *ddata = get_drv_data(dssdev);
struct backlight_device *bldev;
dev_dbg(&dssdev->dev, "remove\n");
bldev = ddata->bldev;
bldev->props.power = FB_BLANK_POWERDOWN;
n8x0_bl_update_status(bldev);
backlight_device_unregister(bldev);
dev_set_drvdata(&dssdev->dev, NULL);
}
static void blizzard_ctrl_setup_update(struct omap_dss_device *dssdev,
int x, int y, int w, int h)
{
struct panel_drv_data *ddata = get_drv_data(dssdev);
u8 tmp[18];
int x_end, y_end;
x_end = x + w - 1;
y_end = y + h - 1;
tmp[0] = x;
tmp[1] = x >> 8;
tmp[2] = y;
tmp[3] = y >> 8;
tmp[4] = x_end;
tmp[5] = x_end >> 8;
tmp[6] = y_end;
tmp[7] = y_end >> 8;
/* scaling? */
tmp[8] = x;
tmp[9] = x >> 8;
tmp[10] = y;
tmp[11] = y >> 8;
tmp[12] = x_end;
tmp[13] = x_end >> 8;
tmp[14] = y_end;
tmp[15] = y_end >> 8;
tmp[16] = BLIZZARD_COLOR_RGB565;
if (ddata->blizzard_ver == BLIZZARD_VERSION_S1D13745)
tmp[17] = BLIZZARD_SRC_WRITE_LCD_BACKGROUND;
else
tmp[17] = ddata->blizzard_ver == BLIZZARD_VERSION_S1D13744 ?
BLIZZARD_SRC_WRITE_LCD :
BLIZZARD_SRC_WRITE_LCD_DESTRUCTIVE;
omapdss_rfbi_set_pixel_size(dssdev, 16);
omapdss_rfbi_set_data_lines(dssdev, 8);
omap_rfbi_configure(dssdev);
blizzard_write(BLIZZARD_INPUT_WIN_X_START_0, tmp, 18);
omapdss_rfbi_set_pixel_size(dssdev, 16);
omapdss_rfbi_set_data_lines(dssdev, 16);
omap_rfbi_configure(dssdev);
}
static void n8x0_panel_disable(struct omap_dss_device *dssdev)
{
struct panel_drv_data *ddata = get_drv_data(dssdev);
dev_dbg(&dssdev->dev, "disable\n");
mutex_lock(&ddata->lock);
rfbi_bus_lock();
n8x0_panel_power_off(dssdev);
rfbi_bus_unlock();
dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
mutex_unlock(&ddata->lock);
}
static void n8x0_panel_power_off(struct omap_dss_device *dssdev)
{
struct panel_n8x0_data *bdata = get_board_data(dssdev);
struct panel_drv_data *ddata = get_drv_data(dssdev);
struct spi_device *spi = ddata->spidev;
if (dssdev->state != OMAP_DSS_DISPLAY_ACTIVE)
return;
send_display_off(spi);
send_sleep_in(spi);
if (bdata->platform_disable)
bdata->platform_disable(dssdev);
gpio_direction_output(bdata->ctrl_pwrdown, 0);
omapdss_rfbi_display_disable(dssdev);
}
static int n8x0_panel_update(struct omap_dss_device *dssdev,
u16 x, u16 y, u16 w, u16 h)
{
struct panel_drv_data *ddata = get_drv_data(dssdev);
dev_dbg(&dssdev->dev, "update\n");
mutex_lock(&ddata->lock);
rfbi_bus_lock();
omap_rfbi_prepare_update(dssdev, &x, &y, &w, &h);
blizzard_ctrl_setup_update(dssdev, x, y, w, h);
omap_rfbi_update(dssdev, x, y, w, h, update_done, NULL);
mutex_unlock(&ddata->lock);
return 0;
}
static int n8x0_panel_suspend(struct omap_dss_device *dssdev)
{
struct panel_drv_data *ddata = get_drv_data(dssdev);
dev_dbg(&dssdev->dev, "suspend\n");
mutex_lock(&ddata->lock);
rfbi_bus_lock();
n8x0_panel_power_off(dssdev);
rfbi_bus_unlock();
dssdev->state = OMAP_DSS_DISPLAY_SUSPENDED;
mutex_unlock(&ddata->lock);
return 0;
}
static void n8x0_panel_power_off(struct omap_dss_device *dssdev)
{
struct panel_n8x0_data *bdata = get_board_data(dssdev);
struct panel_drv_data *ddata = get_drv_data(dssdev);
struct spi_device *spi = ddata->spidev;
if (dssdev->state != OMAP_DSS_DISPLAY_ACTIVE)
return;
send_display_off(spi);
send_sleep_in(spi);
if (bdata->platform_disable)
bdata->platform_disable(dssdev);
/*
* HACK: we should turn off the panel here, but there is some problem
* with the initialization sequence, and we fail to init the panel if we
* have turned it off
*/
/* gpio_direction_output(bdata->panel_reset, 0); */
gpio_direction_output(bdata->ctrl_pwrdown, 0);
omapdss_rfbi_display_disable(dssdev);
}
static int n8x0_panel_power_on(struct omap_dss_device *dssdev)
{
int r;
struct panel_n8x0_data *bdata = get_board_data(dssdev);
struct panel_drv_data *ddata = get_drv_data(dssdev);
struct spi_device *spi = ddata->spidev;
u8 rev, conf;
u8 display_id[3];
const char *panel_name;
if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE)
return 0;
gpio_direction_output(bdata->ctrl_pwrdown, 1);
if (bdata->platform_enable) {
r = bdata->platform_enable(dssdev);
if (r)
goto err_plat_en;
}
r = omapdss_rfbi_display_enable(dssdev);
if (r)
goto err_rfbi_en;
rev = blizzard_read_reg(BLIZZARD_REV_CODE);
conf = blizzard_read_reg(BLIZZARD_CONFIG);
switch (rev & 0xfc) {
case 0x9c:
ddata->blizzard_ver = BLIZZARD_VERSION_S1D13744;
dev_info(&dssdev->dev, "s1d13744 LCD controller rev %d "
"initialized (CNF pins %x)\n", rev & 0x03, conf & 0x07);
break;
case 0xa4:
ddata->blizzard_ver = BLIZZARD_VERSION_S1D13745;
dev_info(&dssdev->dev, "s1d13745 LCD controller rev %d "
"initialized (CNF pins %x)\n", rev & 0x03, conf & 0x07);
break;
default:
dev_err(&dssdev->dev, "invalid s1d1374x revision %02x\n", rev);
r = -ENODEV;
goto err_inv_chip;
}
/* panel */
gpio_direction_output(bdata->panel_reset, 1);
mipid_read(spi, MIPID_CMD_READ_DISP_ID, display_id, 3);
dev_dbg(&spi->dev, "MIPI display ID: %02x%02x%02x\n",
display_id[0], display_id[1], display_id[2]);
switch (display_id[0]) {
case 0x45:
panel_name = "lph8923";
break;
case 0x83:
panel_name = "ls041y3";
break;
default:
dev_err(&dssdev->dev, "invalid display ID 0x%x\n",
display_id[0]);
r = -ENODEV;
goto err_inv_panel;
}
dev_info(&dssdev->dev, "%s rev %02x LCD detected\n",
panel_name, display_id[1]);
send_sleep_out(spi);
send_init_string(spi);
set_data_lines(spi, 24);
send_display_on(spi);
return 0;
err_inv_panel:
/*
* HACK: we should turn off the panel here, but there is some problem
* with the initialization sequence, and we fail to init the panel if we
* have turned it off
*/
/* gpio_direction_output(bdata->panel_reset, 0); */
err_inv_chip:
omapdss_rfbi_display_disable(dssdev);
err_rfbi_en:
if (bdata->platform_disable)
bdata->platform_disable(dssdev);
err_plat_en:
gpio_direction_output(bdata->ctrl_pwrdown, 0);
return r;
}
