it6263_bridge.c
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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright 2019 NXP
*
*/
#include <common.h>
#include <dm.h>
#include <video.h>
#include <video_bridge.h>
#include <asm/gpio.h>
#include <i2c.h>
struct it6263_priv {
unsigned int addr;
};
static int it6263_i2c_reg_write(struct udevice *dev, uint addr, uint mask, uint data)
{
uint8_t valb;
int err;
if (mask != 0xff) {
err = dm_i2c_read(dev, addr, &valb, 1);
if (err) {
printf("%s, read err %d\n", __func__, err);
return err;
}
valb &= ~mask;
valb |= data;
} else {
valb = data;
}
err = dm_i2c_write(dev, addr, &valb, 1);
if (err) {
printf("%s, write err %d\n", __func__, err);
}
return err;
}
static int it6263_i2c_reg_read(struct udevice *dev, uint8_t addr, uint8_t *data)
{
uint8_t valb;
int err;
err = dm_i2c_read(dev, addr, &valb, 1);
if (err) {
printf("%s, read err %d\n", __func__, err);
return err;
}
*data = (int)valb;
return 0;
}
static int it6263_enable(struct udevice *dev)
{
uint8_t data;
int ret;
ret = it6263_i2c_reg_read(dev, 0x00, &data);
if (ret) {
printf("faill to read from it6263 revision, ret %d\n", ret);
return ret;
}
/* InitIT626X(): start */
it6263_i2c_reg_write(dev, 0x04, 0xff, 0x3d);
it6263_i2c_reg_write(dev, 0x0f, 0xff, 0x00);
it6263_i2c_reg_write(dev, 0x05, 0xff, 0x40);
it6263_i2c_reg_write(dev, 0x04, 0xff, 0x15);
it6263_i2c_reg_write(dev, 0x0f, 0xff, 0x00);
it6263_i2c_reg_write(dev, 0x1d, 0xff, 0x66);
it6263_i2c_reg_write(dev, 0x1e, 0xff, 0x01);
it6263_i2c_reg_write(dev, 0x61, 0xff, 0x30);
it6263_i2c_reg_read(dev, 0xf3, &data); /* -> 0x00 */
it6263_i2c_reg_write(dev, 0xf3, 0xff, data & ~0x30);
it6263_i2c_reg_read(dev, 0xf3, &data); /* -> 0x00 */
it6263_i2c_reg_write(dev, 0xf3, 0xff, data | 0x20);
it6263_i2c_reg_write(dev, 0x09, 0xff, 0x30);
it6263_i2c_reg_write(dev, 0x0a, 0xff, 0xf8);
it6263_i2c_reg_write(dev, 0x0b, 0xff, 0x37);
it6263_i2c_reg_write(dev, 0x0f, 0xff, 0x00);
it6263_i2c_reg_write(dev, 0xc9, 0xff, 0x00);
it6263_i2c_reg_write(dev, 0xca, 0xff, 0x00);
it6263_i2c_reg_write(dev, 0xcb, 0xff, 0x00);
it6263_i2c_reg_write(dev, 0xcc, 0xff, 0x00);
it6263_i2c_reg_write(dev, 0xcd, 0xff, 0x00);
it6263_i2c_reg_write(dev, 0xce, 0xff, 0x00);
it6263_i2c_reg_write(dev, 0xcf, 0xff, 0x00);
it6263_i2c_reg_write(dev, 0xd0, 0xff, 0x00);
it6263_i2c_reg_write(dev, 0x0f, 0xff, 0x01);
it6263_i2c_reg_read(dev, 0x58, &data); /* -> 0x00 */
it6263_i2c_reg_write(dev, 0x58, 0xff, data & ~(3 << 5));
it6263_i2c_reg_write(dev, 0x0f, 0xff, 0x00);
it6263_i2c_reg_write(dev, 0xe1, 0xff, 0x00);
it6263_i2c_reg_write(dev, 0x0c, 0xff, 0xff);
it6263_i2c_reg_write(dev, 0x0d, 0xff, 0xff);
it6263_i2c_reg_read(dev, 0x0e, &data); /* -> 0x00 */
it6263_i2c_reg_write(dev, 0x0e, 0xff, (data | 0x3));
it6263_i2c_reg_write(dev, 0x0e, 0xff, (data & 0xfe));
it6263_i2c_reg_write(dev, 0x0f, 0xff, 0x01);
it6263_i2c_reg_write(dev, 0x33, 0xff, 0x00);
it6263_i2c_reg_write(dev, 0x34, 0xff, 0x18);
it6263_i2c_reg_write(dev, 0x35, 0xff, 0x00);
it6263_i2c_reg_write(dev, 0x0f, 0xff, 0x00);
it6263_i2c_reg_write(dev, 0xc4, 0xff, 0xfe);
it6263_i2c_reg_read(dev, 0xc5, &data); /* -> 0x00 */
it6263_i2c_reg_write(dev, 0xc5, 0xff, data | 0x30);
/* InitIT626X end */
it6263_i2c_reg_write(dev, 0x0f, 0xff, 0x00);
it6263_i2c_reg_write(dev, 0x04, 0xff, 0x3d);
it6263_i2c_reg_write(dev, 0x04, 0xff, 0x15);
it6263_i2c_reg_write(dev, 0x0f, 0xff, 0x00);
it6263_i2c_reg_write(dev, 0x1d, 0xff, 0x66);
it6263_i2c_reg_write(dev, 0x1e, 0xff, 0x01);
it6263_i2c_reg_read(dev, 0xc1, &data); /* -> 0x00 */
it6263_i2c_reg_write(dev, 0x61, 0xff, 0x10);
/* SetupAFE(): */
it6263_i2c_reg_write(dev, 0x62, 0xff, 0x88);
it6263_i2c_reg_write(dev, 0x63, 0xff, 0x10);
it6263_i2c_reg_write(dev, 0x64, 0xff, 0x84);
/* SetupAFE(): end */
it6263_i2c_reg_read(dev, 0x04, &data); /* -> 0x00 */
it6263_i2c_reg_write(dev, 0x04, 0xff, 0x1d);
it6263_i2c_reg_read(dev, 0x04, &data); /* -> 0x00 */
it6263_i2c_reg_write(dev, 0x04, 0xff, 0x15);
it6263_i2c_reg_read(dev, 0x0e, &data); /* -> 0x00 */
/* Wait video stable */
it6263_i2c_reg_read(dev, 0x0e, &data); /* -> 0x00 */
/* Reset Video */
it6263_i2c_reg_read(dev, 0x0d, &data); /* -> 0x00 */
it6263_i2c_reg_write(dev, 0x0d, 0xff, 0x40);
it6263_i2c_reg_read(dev, 0x0e, &data); /* -> 0x00 */
it6263_i2c_reg_write(dev, 0x0e, 0xff, 0x7d);
it6263_i2c_reg_write(dev, 0x0e, 0xff, 0x7c);
it6263_i2c_reg_write(dev, 0x0f, 0xff, 0x00);
it6263_i2c_reg_write(dev, 0x61, 0xff, 0x00);
it6263_i2c_reg_read(dev, 0x61, &data); /* -> 0x00 */
it6263_i2c_reg_read(dev, 0x62, &data); /* -> 0x00 */
it6263_i2c_reg_read(dev, 0x63, &data); /* -> 0x00 */
it6263_i2c_reg_read(dev, 0x64, &data); /* -> 0x00 */
it6263_i2c_reg_read(dev, 0x65, &data); /* -> 0x00 */
it6263_i2c_reg_read(dev, 0x66, &data); /* -> 0x00 */
it6263_i2c_reg_read(dev, 0x67, &data); /* -> 0x00 */
it6263_i2c_reg_write(dev, 0x0f, 0xff, 0x00);
it6263_i2c_reg_read(dev, 0xc1, &data); /* -> 0x00 */
it6263_i2c_reg_write(dev, 0xc1, 0xff, 0x00);
it6263_i2c_reg_write(dev, 0xc6, 0xff, 0x03);
/* Clear AV mute */
return 0;
}
static int it6263_attach(struct udevice *dev)
{
return 0;
}
static int it6263_set_backlight(struct udevice *dev, int percent)
{
debug("%s\n", __func__);
mdelay(10);
it6263_enable(dev);
return 0;
}
static int it6263_probe(struct udevice *dev)
{
struct it6263_priv *priv = dev_get_priv(dev);
debug("%s\n", __func__);
priv->addr = dev_read_addr(dev);
if (priv->addr == 0)
return -ENODEV;
return 0;
}
struct video_bridge_ops it6263_ops = {
.attach = it6263_attach,
.set_backlight = it6263_set_backlight,
};
static const struct udevice_id it6263_ids[] = {
{ .compatible = "ite,it6263" },
{ }
};
U_BOOT_DRIVER(it6263_bridge) = {
.name = "it6263_bridge",
.id = UCLASS_VIDEO_BRIDGE,
.of_match = it6263_ids,
.ops = &it6263_ops,
.bind = dm_scan_fdt_dev,
.probe = it6263_probe,
.priv_auto_alloc_size = sizeof(struct it6263_priv),
};