upstream u-boot with additional patches for our devices/boards:
https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ;
Gbit ethernet patch for some LIME2 revisions ;
with SPI flash support
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
231 lines
3.6 KiB
231 lines
3.6 KiB
/*
|
|
* LCD: LG4573, TFT 4.3", 480x800, RGB24
|
|
* LCD initialization via SPI
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0
|
|
*
|
|
*/
|
|
#include <common.h>
|
|
#include <errno.h>
|
|
#include <spi.h>
|
|
|
|
#define PWR_ON_DELAY_MSECS 120
|
|
|
|
static int lb043wv_spi_write_u16(struct spi_slave *spi, u16 val)
|
|
{
|
|
unsigned long flags = SPI_XFER_BEGIN;
|
|
unsigned short buf16 = htons(val);
|
|
int ret = 0;
|
|
|
|
flags |= SPI_XFER_END;
|
|
|
|
ret = spi_xfer(spi, 16, &buf16, NULL, flags);
|
|
if (ret)
|
|
debug("%s: Failed to send: %d\n", __func__, ret);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void lb043wv_spi_write_u16_array(struct spi_slave *spi, u16 *buff,
|
|
int size)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < size; i++)
|
|
lb043wv_spi_write_u16(spi, buff[i]);
|
|
}
|
|
|
|
static void lb043wv_display_mode_settings(struct spi_slave *spi)
|
|
{
|
|
static u16 display_mode_settings[] = {
|
|
0x703A,
|
|
0x7270,
|
|
0x70B1,
|
|
0x7208,
|
|
0x723B,
|
|
0x720F,
|
|
0x70B2,
|
|
0x7200,
|
|
0x72C8,
|
|
0x70B3,
|
|
0x7200,
|
|
0x70B4,
|
|
0x7200,
|
|
0x70B5,
|
|
0x7242,
|
|
0x7210,
|
|
0x7210,
|
|
0x7200,
|
|
0x7220,
|
|
0x70B6,
|
|
0x720B,
|
|
0x720F,
|
|
0x723C,
|
|
0x7213,
|
|
0x7213,
|
|
0x72E8,
|
|
0x70B7,
|
|
0x7246,
|
|
0x7206,
|
|
0x720C,
|
|
0x7200,
|
|
0x7200,
|
|
};
|
|
|
|
debug("transfer display mode settings\n");
|
|
lb043wv_spi_write_u16_array(spi, display_mode_settings,
|
|
ARRAY_SIZE(display_mode_settings));
|
|
}
|
|
|
|
static void lb043wv_power_settings(struct spi_slave *spi)
|
|
{
|
|
static u16 power_settings[] = {
|
|
0x70C0,
|
|
0x7201,
|
|
0x7211,
|
|
0x70C3,
|
|
0x7207,
|
|
0x7203,
|
|
0x7204,
|
|
0x7204,
|
|
0x7204,
|
|
0x70C4,
|
|
0x7212,
|
|
0x7224,
|
|
0x7218,
|
|
0x7218,
|
|
0x7202,
|
|
0x7249,
|
|
0x70C5,
|
|
0x726F,
|
|
0x70C6,
|
|
0x7241,
|
|
0x7263,
|
|
};
|
|
|
|
debug("transfer power settings\n");
|
|
lb043wv_spi_write_u16_array(spi, power_settings,
|
|
ARRAY_SIZE(power_settings));
|
|
}
|
|
|
|
static void lb043wv_gamma_settings(struct spi_slave *spi)
|
|
{
|
|
static u16 gamma_settings[] = {
|
|
0x70D0,
|
|
0x7203,
|
|
0x7207,
|
|
0x7273,
|
|
0x7235,
|
|
0x7200,
|
|
0x7201,
|
|
0x7220,
|
|
0x7200,
|
|
0x7203,
|
|
0x70D1,
|
|
0x7203,
|
|
0x7207,
|
|
0x7273,
|
|
0x7235,
|
|
0x7200,
|
|
0x7201,
|
|
0x7220,
|
|
0x7200,
|
|
0x7203,
|
|
0x70D2,
|
|
0x7203,
|
|
0x7207,
|
|
0x7273,
|
|
0x7235,
|
|
0x7200,
|
|
0x7201,
|
|
0x7220,
|
|
0x7200,
|
|
0x7203,
|
|
0x70D3,
|
|
0x7203,
|
|
0x7207,
|
|
0x7273,
|
|
0x7235,
|
|
0x7200,
|
|
0x7201,
|
|
0x7220,
|
|
0x7200,
|
|
0x7203,
|
|
0x70D4,
|
|
0x7203,
|
|
0x7207,
|
|
0x7273,
|
|
0x7235,
|
|
0x7200,
|
|
0x7201,
|
|
0x7220,
|
|
0x7200,
|
|
0x7203,
|
|
0x70D5,
|
|
0x7203,
|
|
0x7207,
|
|
0x7273,
|
|
0x7235,
|
|
0x7200,
|
|
0x7201,
|
|
0x7220,
|
|
0x7200,
|
|
0x7203,
|
|
};
|
|
|
|
debug("transfer gamma settings\n");
|
|
lb043wv_spi_write_u16_array(spi, gamma_settings,
|
|
ARRAY_SIZE(gamma_settings));
|
|
}
|
|
|
|
static void lb043wv_display_on(struct spi_slave *spi)
|
|
{
|
|
static u16 sleep_out = 0x7011;
|
|
static u16 display_on = 0x7029;
|
|
|
|
lb043wv_spi_write_u16(spi, sleep_out);
|
|
mdelay(PWR_ON_DELAY_MSECS);
|
|
lb043wv_spi_write_u16(spi, display_on);
|
|
}
|
|
|
|
int lg4573_spi_startup(unsigned int bus, unsigned int cs,
|
|
unsigned int max_hz, unsigned int spi_mode)
|
|
{
|
|
struct spi_slave *spi;
|
|
int ret;
|
|
|
|
spi = spi_setup_slave(bus, cs, max_hz, spi_mode);
|
|
if (!spi) {
|
|
debug("%s: Failed to set up slave\n", __func__);
|
|
return -1;
|
|
}
|
|
|
|
ret = spi_claim_bus(spi);
|
|
if (ret) {
|
|
debug("%s: Failed to claim SPI bus: %d\n", __func__, ret);
|
|
goto err_claim_bus;
|
|
}
|
|
|
|
lb043wv_display_mode_settings(spi);
|
|
lb043wv_power_settings(spi);
|
|
lb043wv_gamma_settings(spi);
|
|
|
|
lb043wv_display_on(spi);
|
|
return 0;
|
|
err_claim_bus:
|
|
spi_free_slave(spi);
|
|
return -1;
|
|
}
|
|
|
|
static int do_lgset(cmd_tbl_t *cmdtp, int flag, int argc,
|
|
char * const argv[])
|
|
{
|
|
lg4573_spi_startup(0, 0, 10000000, SPI_MODE_0);
|
|
return 0;
|
|
}
|
|
|
|
U_BOOT_CMD(
|
|
lgset, 2, 1, do_lgset,
|
|
"set lgdisplay",
|
|
""
|
|
);
|
|
|