diff options
author | Tom Rini <trini@konsulko.com> | 2015-04-20 09:13:52 -0400 |
---|---|---|
committer | Tom Rini <trini@konsulko.com> | 2015-04-20 09:13:52 -0400 |
commit | 1733259d25015c28c47990ec11af99b3f62f811c (patch) | |
tree | 654c376440e5b01603e88dc22047d657f635def7 /drivers/video/lg4573.c | |
parent | 791a9f67f4f8db512cf59b40f47544fb335cd8db (diff) | |
parent | fc1a79d95e9038e9cf53f99c1825005b4dfaf7f4 (diff) | |
download | u-boot-imx-1733259d25015c28c47990ec11af99b3f62f811c.zip u-boot-imx-1733259d25015c28c47990ec11af99b3f62f811c.tar.gz u-boot-imx-1733259d25015c28c47990ec11af99b3f62f811c.tar.bz2 |
Merge branch 'master' of git://git.denx.de/u-boot-video
Diffstat (limited to 'drivers/video/lg4573.c')
-rw-r--r-- | drivers/video/lg4573.c | 231 |
1 files changed, 231 insertions, 0 deletions
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", + "" +); |