static int blizzard_ctrl_enable(struct omap_display *display)
{
int r = 0;
u8 rev, conf;
DBG("blizzard_ctrl_enable\n");
if (display->hw_config.ctrl_enable) {
r = display->hw_config.ctrl_enable(display);
if (r)
return r;
}
msleep(100);
rev = blizzard_read_reg(BLIZZARD_CLK_SRC);
printk("CLK_SRC %x\n", rev);
rev = blizzard_read_reg(BLIZZARD_PLL_DIV);
printk("PLLDIV %x\n", rev);
rev = blizzard_read_reg(BLIZZARD_REV_CODE);
conf = blizzard_read_reg(BLIZZARD_CONFIG);
printk("rev %x, conf %x\n", rev, conf);
switch (rev & 0xfc) {
case 0x9c:
blizzard.version = BLIZZARD_VERSION_S1D13744;
pr_info("omapfb: s1d13744 LCD controller rev %d "
"initialized (CNF pins %x)\n", rev & 0x03, conf & 0x07);
break;
case 0xa4:
blizzard.version = BLIZZARD_VERSION_S1D13745;
pr_info("omapfb: s1d13745 LCD controller rev %d "
"initialized (CNF pins %x)\n", rev & 0x03, conf & 0x07);
break;
default:
printk("invalid s1d1374x revision %02x\n",
rev);
r = -ENODEV;
}
return r;
}
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;
}
