int target_ldo_ctrl(uint8_t enable)
{
uint32_t ldocounter = 0;
uint32_t pm8x41_ldo_base = 0x13F00;
while (ldocounter < TOTAL_LDO_DEFINED) {
struct pm8x41_ldo ldo_entry = LDO((pm8x41_ldo_base +
0x100 * ldo_entry_array[ldocounter].ldo_id),
ldo_entry_array[ldocounter].ldo_type);
dprintf(SPEW, "Setting %s\n",
ldo_entry_array[ldocounter].ldo_id);
/* Set voltage during power on */
if (enable) {
pm8x41_ldo_set_voltage(&ldo_entry,
ldo_entry_array[ldocounter].ldo_voltage);
pm8x41_ldo_control(&ldo_entry, enable);
} else if(ldo_entry_array[ldocounter].ldo_id != HFPLL_LDO_ID) {
pm8x41_ldo_control(&ldo_entry, enable);
}
ldocounter++;
}
return NO_ERROR;
}
static int msm8974_backlight_on()
{
static struct pm8x41_wled_data wled_ctrl = {
.mod_scheme = 0xC3,
.led1_brightness = (0x0F << 8) | 0xEF,
.led2_brightness = (0x0F << 8) | 0xEF,
.led3_brightness = (0x0F << 8) | 0xEF,
.max_duty_cycle = 0x01,
};
pm8x41_wled_config(&wled_ctrl);
pm8x41_wled_sink_control(1);
pm8x41_wled_iled_sync_control(1);
pm8x41_wled_enable(1);
return 0;
}
static int msm8974_mdss_dsi_panel_clock(uint8_t enable)
{
if (enable) {
mdp_gdsc_ctrl(enable);
mdp_clock_init();
mdss_dsi_uniphy_pll_config();
mmss_clock_init();
} else if(!target_cont_splash_screen()) {
// * Add here for continuous splash *
mmss_clock_disable();
mdp_clock_disable();
mdp_gdsc_ctrl(enable);
}
return 0;
}
/* Pull DISP_RST_N high to get panel out of reset */
static void msm8974_mdss_mipi_panel_reset(uint8_t enable)
{
struct pm8x41_gpio gpio19_param = {
.direction = PM_GPIO_DIR_OUT,
.output_buffer = PM_GPIO_OUT_CMOS,
.out_strength = PM_GPIO_OUT_DRIVE_MED,
};
pm8x41_gpio_config(19, &gpio19_param);
if (enable) {
gpio_tlmm_config(58, 0, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_8MA, GPIO_DISABLE);
pm8x41_gpio_set(19, PM_GPIO_FUNC_HIGH);
mdelay(2);
pm8x41_gpio_set(19, PM_GPIO_FUNC_LOW);
mdelay(5);
pm8x41_gpio_set(19, PM_GPIO_FUNC_HIGH);
mdelay(2);
gpio_set(58, 2);
} else {
gpio19_param.out_strength = PM_GPIO_OUT_DRIVE_LOW;
pm8x41_gpio_config(19, &gpio19_param);
pm8x41_gpio_set(19, PM_GPIO_FUNC_LOW);
gpio_set(58, 2);
}
}
static int msm8974_mipi_panel_power(uint8_t enable)
{
if (enable) {
/* Enable backlight */
msm8974_backlight_on();
/* Turn on LDO8 for lcd1 mipi vdd */
dprintf(SPEW, " Setting LDO22\n");
pm8x41_ldo_set_voltage("LDO22", 3000000);
pm8x41_ldo_control("LDO22", enable);
dprintf(SPEW, " Setting LDO12\n");
/* Turn on LDO23 for lcd1 mipi vddio */
pm8x41_ldo_set_voltage("LDO12", 1800000);
pm8x41_ldo_control("LDO12", enable);
dprintf(SPEW, " Setting LDO2\n");
/* Turn on LDO2 for vdda_mipi_dsi */
pm8x41_ldo_set_voltage("LDO2", 1200000);
pm8x41_ldo_control("LDO2", enable);
dprintf(SPEW, " Panel Reset \n");
/* Panel Reset */
msm8974_mdss_mipi_panel_reset(enable);
dprintf(SPEW, " Panel Reset Done\n");
} else {
msm8974_mdss_mipi_panel_reset(enable);
pm8x41_wled_enable(enable);
pm8x41_ldo_control("LDO2", enable);
pm8x41_ldo_control("LDO22", enable);
}
return 0;
}
void display_init(void)
{
uint32_t hw_id = board_hardware_id();
uint32_t soc_ver = board_soc_version();
dprintf(INFO, "display_init(),target_id=%d.\n", hw_id);
switch (hw_id) {
case HW_PLATFORM_MTP:
case HW_PLATFORM_FLUID:
case HW_PLATFORM_SURF:
mipi_toshiba_video_720p_init(&(panel.panel_info));
panel.clk_func = msm8974_mdss_dsi_panel_clock;
panel.power_func = msm8974_mipi_panel_power;
panel.fb.base = MIPI_FB_ADDR;
panel.fb.width = panel.panel_info.xres;
panel.fb.height = panel.panel_info.yres;
panel.fb.stride = panel.panel_info.xres;
panel.fb.bpp = panel.panel_info.bpp;
panel.fb.format = FB_FORMAT_RGB888;
panel.mdp_rev = MDP_REV_50;
break;
default:
return;
};
if (msm_display_init(&panel)) {
dprintf(CRITICAL, "Display init failed!\n");
return;
}
display_enable = 1;
}
static int msm8974_edp_panel_power(int enable)
{
struct pm8x41_gpio gpio36_param = {
.direction = PM_GPIO_DIR_OUT,
.function = PM_GPIO_FUNC_2,
.vin_sel = 2, /* VIN_2 */
.pull = PM_GPIO_PULL_UP_1_5 | PM_GPIO_PULLDOWN_10,
.output_buffer = PM_GPIO_OUT_CMOS,
.out_strength = PM_GPIO_OUT_DRIVE_HIGH,
};
struct pm8x41_ldo ldo12 = LDO(PM8x41_LDO12, PLDO_TYPE);
if (enable) {
/* Enable backlight */
dprintf(SPEW, "Enable Backlight\n");
msm8974_pwm_backlight_ctrl(36, 8, 1);
dprintf(SPEW, "Enable Backlight Done\n");
/* Turn on LDO12 for edp vdda */
dprintf(SPEW, "Setting LDO12 n");
pm8x41_ldo_set_voltage(&ldo12, 1800000);
pm8x41_ldo_control(&ldo12, enable);
dprintf(SPEW, "Setting LDO12 Done\n");
/* Panel Enable */
dprintf(SPEW, "Panel Enable\n");
gpio_tlmm_config(58, 0, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_8MA,
GPIO_DISABLE);
gpio_set(58, 2);
dprintf(SPEW, "Panel Enable Done\n");
} else {
/* Keep LDO12 on, otherwise kernel will not boot */
gpio_set(58, 0);
msm8974_pwm_backlight_ctrl(36, 8, 0);
}
return 0;
}
bool target_display_panel_node(char *panel_name, char *pbuf, uint16_t buf_size)
{
int prefix_string_len = strlen(DISPLAY_CMDLINE_PREFIX);
bool ret = true;
panel_name += strspn(panel_name, " ");
if (!strcmp(panel_name, HDMI_PANEL_NAME)) {
if (buf_size < (prefix_string_len + LK_OVERRIDE_PANEL_LEN +
HDMI_CONTROLLER_STRING)) {
dprintf(CRITICAL, "command line argument is greater than buffer size\n");
return false;
}
strlcpy(pbuf, DISPLAY_CMDLINE_PREFIX, buf_size);
buf_size -= prefix_string_len;
strlcat(pbuf, LK_OVERRIDE_PANEL, buf_size);
buf_size -= LK_OVERRIDE_PANEL_LEN;
strlcat(pbuf, HDMI_CONTROLLER_STRING, buf_size);
} else {
ret = gcdb_display_cmdline_arg(panel_name, pbuf, buf_size);
}
return ret;
}