/* SPDX-License-Identifier: GPL-2.0-only */ #include <arch/cache.h> #include <device/mmio.h> #include <console/console.h> #include <device/device.h> #include <delay.h> #include <edid.h> #include <gpio.h> #include <string.h> #include <soc/addressmap.h> #include <soc/clock.h> #include <soc/display.h> #include <soc/edp.h> #include <soc/hdmi.h> #include <soc/gpio.h> #include <soc/grf.h> #include <soc/soc.h> #include <soc/vop.h> #include <framebuffer_info.h> #include "chip.h" void rk_display_init(struct device *dev, u32 lcdbase, unsigned long fb_size) { struct edid edid; uint32_t val; struct soc_rockchip_rk3288_config *conf = dev->chip_info; uint32_t lower = ALIGN_DOWN(lcdbase, MiB); uint32_t upper = ALIGN_UP(lcdbase + fb_size, MiB); enum vop_modes detected_mode = VOP_MODE_UNKNOWN; printk(BIOS_SPEW, "LCD framebuffer @%p\n", (void *)(lcdbase)); memset((void *)lcdbase, 0, fb_size); /* clear the framebuffer */ dcache_clean_invalidate_by_mva((void *)lower, upper - lower); mmu_config_range(lower / MiB, (upper - lower) / MiB, DCACHE_OFF); switch (conf->vop_mode) { case VOP_MODE_NONE: return; case VOP_MODE_AUTO_DETECT: /* try EDP first, then HDMI */ case VOP_MODE_EDP: printk(BIOS_DEBUG, "Attempting to setup EDP display.\n"); rkclk_configure_edp(); rkclk_configure_vop_aclk(conf->vop_id, 192 * MHz); /* grf_edp_ref_clk_sel: from internal 24MHz or 27MHz clock */ write32(&rk3288_grf->soc_con12, RK_SETBITS(1 << 4)); /* select epd signal from vop0 or vop1 */ val = (conf->vop_id == 1) ? RK_SETBITS(1 << 5) : RK_CLRBITS(1 << 5); write32(&rk3288_grf->soc_con6, val); rk_edp_init(); if (rk_edp_get_edid(&edid) == 0) { detected_mode = VOP_MODE_EDP; break; } else { printk(BIOS_WARNING, "Cannot get EDID from EDP.\n"); if (conf->vop_mode == VOP_MODE_EDP) return; } /* fall thru */ case VOP_MODE_HDMI: printk(BIOS_DEBUG, "Attempting to setup HDMI display.\n"); rkclk_configure_hdmi(); rkclk_configure_vop_aclk(conf->vop_id, 384 * MHz); rk_hdmi_init(conf->vop_id); if (rk_hdmi_get_edid(&edid) == 0) { detected_mode = VOP_MODE_HDMI; break; } else { printk(BIOS_WARNING, "Cannot get EDID from HDMI.\n"); if (conf->vop_mode == VOP_MODE_HDMI) return; } /* fall thru */ default: printk(BIOS_WARNING, "Cannot read any edid info, aborting.\n"); return; } if (rkclk_configure_vop_dclk(conf->vop_id, edid.mode.pixel_clock * KHz)) { printk(BIOS_WARNING, "config vop err\n"); return; } edid_set_framebuffer_bits_per_pixel(&edid, conf->framebuffer_bits_per_pixel, 0); rkvop_mode_set(conf->vop_id, &edid, detected_mode); rkvop_prepare(conf->vop_id, &edid); rkvop_enable(conf->vop_id, lcdbase); switch (detected_mode) { case VOP_MODE_HDMI: if (rk_hdmi_enable(&edid)) { printk(BIOS_WARNING, "hdmi enable err\n"); return; } /* * HACK: if we do remove this delay, HDMI TV may not show * anythings. So we make an delay here, ensure TV have * enough time to respond. */ mdelay(2000); break; case VOP_MODE_EDP: default: if (rk_edp_prepare()) { printk(BIOS_WARNING, "edp prepare err\n"); return; } if (rk_edp_enable()) { printk(BIOS_WARNING, "edp enable err\n"); return; } mainboard_power_on_backlight(); break; } fb_new_framebuffer_info_from_edid(&edid, (uintptr_t)lcdbase); }