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/* SPDX-License-Identifier: GPL-2.0-only */
#include <boardid.h>
#include <bootmode.h>
#include <console/console.h>
#include <delay.h>
#include <device/device.h>
#include <device/mmio.h>
#include <ec/google/chromeec/ec.h>
#include <edid.h>
#include <framebuffer_info.h>
#include <gpio.h>
#include <soc/bl31.h>
#include <soc/ddp.h>
#include <soc/dpm.h>
#include <soc/dptx.h>
#include <soc/gpio.h>
#include <soc/i2c.h>
#include <soc/msdc.h>
#include <soc/mtcmos.h>
#include <soc/pcie.h>
#include <soc/spm.h>
#include <soc/usb.h>
#include <types.h>
#include "gpio.h"
/* GPIO to schematics names */
#define GPIO_AP_EDP_BKLTEN GPIO(DGI_D5)
#define GPIO_BL_PWM_1V8 GPIO(DISP_PWM0)
#define GPIO_EDP_HPD_1V8 GPIO(GPIO_07)
#define GPIO_EN_PP3300_DISP_X GPIO(I2SO1_D2)
bool mainboard_needs_pcie_init(void)
{
uint32_t sku = sku_id();
if (sku == CROS_SKU_UNKNOWN) {
printk(BIOS_WARNING, "Unknown SKU (%#x); assuming PCIe", sku);
return true;
} else if (sku == CROS_SKU_UNPROVISIONED) {
printk(BIOS_WARNING, "Unprovisioned SKU (%#x); assuming PCIe", sku);
return true;
}
/*
* All cherry boards share the same SKU encoding. Therefore there is no need to check
* the board here.
* - BIT(1): NVMe (PCIe)
* - BIT(3): UFS (which takes precedence over BIT(1))
*/
if (sku & BIT(3))
return false;
if (sku & BIT(1))
return true;
/* Otherwise, eMMC */
return false;
}
/* Set up backlight control pins as output pin and power-off by default */
static void configure_panel_backlight(void)
{
gpio_output(GPIO_AP_EDP_BKLTEN, 0);
gpio_output(GPIO_BL_PWM_1V8, 0);
}
static void power_on_panel(void)
{
/* Default power sequence for most panels. */
gpio_set_pull(GPIO_EDP_HPD_1V8, GPIO_PULL_ENABLE, GPIO_PULL_UP);
gpio_set_mode(GPIO_EDP_HPD_1V8, 2);
gpio_output(GPIO_EN_PP3300_DISP_X, 1);
}
static bool configure_display(void)
{
struct edid edid;
struct fb_info *info;
const char *name;
printk(BIOS_INFO, "%s: Starting display initialization\n", __func__);
mtcmos_display_power_on();
mtcmos_protect_display_bus();
configure_panel_backlight();
power_on_panel();
mtk_ddp_init();
mdelay(200);
if (mtk_edp_init(&edid) < 0) {
printk(BIOS_ERR, "%s: Failed to initialize eDP\n", __func__);
return false;
}
name = edid.ascii_string;
if (name[0] == '\0')
name = "unknown name";
printk(BIOS_INFO, "%s: '%s %s' %dx%d@%dHz\n", __func__,
edid.manufacturer_name, name, edid.mode.ha, edid.mode.va,
edid.mode.refresh);
edid_set_framebuffer_bits_per_pixel(&edid, 32, 0);
mtk_ddp_mode_set(&edid);
info = fb_new_framebuffer_info_from_edid(&edid, (uintptr_t)0);
if (info)
fb_set_orientation(info, LB_FB_ORIENTATION_NORMAL);
return true;
}
static void configure_i2s(void)
{
/* Audio PWR */
mtcmos_audio_power_on();
mtcmos_protect_audio_bus();
/* SoC I2S */
gpio_set_mode(GPIO(GPIO_02), PAD_GPIO_02_FUNC_TDMIN_LRCK);
gpio_set_mode(GPIO(GPIO_03), PAD_GPIO_03_FUNC_TDMIN_BCK);
gpio_set_mode(GPIO(I2SO2_D0), PAD_I2SO2_D0_FUNC_I2SO2_D0);
}
static void configure_audio(void)
{
if (CONFIG(CHERRY_USE_RT1011) || CONFIG(CHERRY_USE_MAX98390))
mtk_i2c_bus_init(I2C2, I2C_SPEED_FAST);
if (CONFIG(CHERRY_USE_MAX98390))
configure_i2s();
}
static void mainboard_init(struct device *dev)
{
if (display_init_required())
configure_display();
else
printk(BIOS_INFO, "%s: Skipped display initialization\n", __func__);
mtk_msdc_configure_emmc(true);
mtk_msdc_configure_sdcard();
setup_usb_host();
configure_audio();
if (dpm_init())
printk(BIOS_ERR, "dpm init failed, DVFS may not work\n");
if (spm_init())
printk(BIOS_ERR, "spm init failed, system suspend may not work\n");
if (CONFIG(ARM64_USE_ARM_TRUSTED_FIRMWARE))
register_reset_to_bl31(GPIO_RESET.id, true);
}
static void mainboard_enable(struct device *dev)
{
dev->ops->init = &mainboard_init;
}
struct chip_operations mainboard_ops = {
.name = CONFIG_MAINBOARD_PART_NUMBER,
.enable_dev = mainboard_enable,
};
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