sunxi: Display: Add support for eDP panels connected via an anx9804 bridge

[karo-tx-uboot.git] / drivers / video / sunxi_display.c

diff --git a/drivers/video/sunxi_display.c b/drivers/video/sunxi_display.c
index 06ed5c760318a765d0f30489569601f0f2a62269..fc1aea3f06f2dd7f84fe84f912fc4c5667336f0b 100644 (file)
--- a/drivers/video/sunxi_display.c
+++ b/drivers/video/sunxi_display.c
@@ -15,6 +15,7 @@
 #include <asm/global_data.h>
 #include <asm/gpio.h>
 #include <asm/io.h>
+#include <axp221.h>
 #include <errno.h>
 #include <fdtdec.h>
 #include <fdt_support.h>
@@ -22,6 +23,7 @@
 #include <malloc.h>
 #include <video_fb.h>
 #include "videomodes.h"
+#include "anx9804.h"
 #include "hitachi_tx18d42vm_lcd.h"
 #include "ssd2828.h"
 
@@ -765,13 +767,17 @@ static void sunxi_lcdc_tcon0_mode_set(const struct ctfb_res_modes *mode,
                (struct sunxi_lcdc_reg *)SUNXI_LCD0_BASE;
        int bp, clk_delay, clk_div, clk_double, pin, total, val;
 
-       for (pin = SUNXI_GPD(0); pin <= SUNXI_GPD(27); pin++)
+       for (pin = SUNXI_GPD(0); pin <= SUNXI_GPD(27); pin++) {
 #ifdef CONFIG_VIDEO_LCD_IF_PARALLEL
                sunxi_gpio_set_cfgpin(pin, SUNXI_GPD_LCD0);
 #endif
 #ifdef CONFIG_VIDEO_LCD_IF_LVDS
                sunxi_gpio_set_cfgpin(pin, SUNXI_GPD_LVDS0);
 #endif
+#ifdef CONFIG_VIDEO_LCD_PANEL_EDP_4_LANE_1620M_VIA_ANX9804
+               sunxi_gpio_set_drv(pin, 3);
+#endif
+       }
 
        sunxi_lcdc_pll_set(0, mode->pixclock_khz, &clk_div, &clk_double);
 
@@ -1208,6 +1214,17 @@ static void sunxi_mode_set(const struct ctfb_res_modes *mode,
                break;
        case sunxi_monitor_lcd:
                sunxi_lcdc_panel_enable();
+               if (IS_ENABLED(CONFIG_VIDEO_LCD_PANEL_EDP_4_LANE_1620M_VIA_ANX9804)) {
+                       /*
+                        * The anx9804 needs 1.8V from eldo3, we do this here
+                        * and not via CONFIG_AXP221_ELDO3 from board_init()
+                        * to avoid turning this on when using hdmi output.
+                        */
+                       axp221_set_eldo(3, 1800);
+                       anx9804_init(CONFIG_VIDEO_LCD_I2C_BUS, 4,
+                                    ANX9804_DATA_RATE_1620M,
+                                    sunxi_display.depth);
+               }
                if (IS_ENABLED(CONFIG_VIDEO_LCD_HITACHI_TX18D42VM)) {
                        mdelay(50); /* Wait for lcd controller power on */
                        hitachi_tx18d42vm_init();