video, lg4573: add support for the lg4573 display
Signed-off-by: Heiko Schocher <hs@denx.de>
diff --git a/drivers/video/lg4573.c b/drivers/video/lg4573.c
new file mode 100644
index 0000000..43670fc
--- /dev/null
+++ b/drivers/video/lg4573.c
@@ -0,0 +1,231 @@
+/*
+ * 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",
+ ""
+);