diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/video/Makefile | 1 | ||||
| -rw-r--r-- | drivers/video/scf0403_lcd.c | 296 |
2 files changed, 297 insertions, 0 deletions
diff --git a/drivers/video/Makefile b/drivers/video/Makefile index fed1c9c..a7f5469 100644 --- a/drivers/video/Makefile +++ b/drivers/video/Makefile @@ -18,6 +18,7 @@ obj-$(CONFIG_FSL_DIU_FB) += fsl_diu_fb.o videomodes.o obj-$(CONFIG_L5F31188) += l5f31188.o obj-$(CONFIG_MPC8XX_LCD) += mpc8xx_lcd.o obj-$(CONFIG_PXA_LCD) += pxa_lcd.o +obj-$(CONFIG_SCF0403_LCD) += scf0403_lcd.o obj-$(CONFIG_S6E8AX0) += s6e8ax0.o obj-$(CONFIG_S6E63D6) += s6e63d6.o obj-$(CONFIG_LD9040) += ld9040.o diff --git a/drivers/video/scf0403_lcd.c b/drivers/video/scf0403_lcd.c new file mode 100644 index 0000000..2bc8bca --- /dev/null +++ b/drivers/video/scf0403_lcd.c @@ -0,0 +1,296 @@ +/* + * scf0403.c -- support for DataImage SCF0403 LCD + * + * Copyright (c) 2013 Adapted from Linux driver: + * Copyright (c) 2012 Anders Electronics plc. All Rights Reserved. + * Copyright (c) 2012 CompuLab, Ltd + * Dmitry Lifshitz <lifshitz@compulab.co.il> + * Ilya Ledvich <ilya@compulab.co.il> + * Inspired by Alberto Panizzo <maramaopercheseimorto@gmail.com> & + * Marek Vasut work in l4f00242t03.c + * + * U-Boot port: Nikita Kiryanov <nikita@compulab.co.il> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <asm/gpio.h> +#include <spi.h> + +struct scf0403_cmd { + u16 cmd; + u16 *params; + int count; +}; + +struct scf0403_initseq_entry { + struct scf0403_cmd cmd; + int delay_ms; +}; + +struct scf0403_priv { + struct spi_slave *spi; + unsigned int reset_gpio; + u32 rddid; + struct scf0403_initseq_entry *init_seq; + int seq_size; +}; + +struct scf0403_priv priv; + +#define SCF0403852GGU04_ID 0x000080 + +/* SCF0403526GGU20 model commands parameters */ +static u16 extcmd_params_sn20[] = {0xff, 0x98, 0x06}; +static u16 spiinttype_params_sn20[] = {0x60}; +static u16 bc_params_sn20[] = { + 0x01, 0x10, 0x61, 0x74, 0x01, 0x01, 0x1B, + 0x12, 0x71, 0x00, 0x00, 0x00, 0x01, 0x01, + 0x05, 0x00, 0xFF, 0xF2, 0x01, 0x00, 0x40, +}; +static u16 bd_params_sn20[] = {0x01, 0x23, 0x45, 0x67, 0x01, 0x23, 0x45, 0x67}; +static u16 be_params_sn20[] = { + 0x01, 0x22, 0x22, 0xBA, 0xDC, 0x26, 0x28, 0x22, 0x22, +}; +static u16 vcom_params_sn20[] = {0x74}; +static u16 vmesur_params_sn20[] = {0x7F, 0x0F, 0x00}; +static u16 powerctl_params_sn20[] = {0x03, 0x0b, 0x00}; +static u16 lvglvolt_params_sn20[] = {0x08}; +static u16 engsetting_params_sn20[] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x20}; +static u16 dispfunc_params_sn20[] = {0xa0}; +static u16 dvddvolt_params_sn20[] = {0x74}; +static u16 dispinv_params_sn20[] = {0x00, 0x00, 0x00}; +static u16 panelres_params_sn20[] = {0x82}; +static u16 framerate_params_sn20[] = {0x00, 0x13, 0x13}; +static u16 timing_params_sn20[] = {0x80, 0x05, 0x40, 0x28}; +static u16 powerctl2_params_sn20[] = {0x17, 0x75, 0x79, 0x20}; +static u16 memaccess_params_sn20[] = {0x00}; +static u16 pixfmt_params_sn20[] = {0x66}; +static u16 pgamma_params_sn20[] = { + 0x00, 0x03, 0x0b, 0x0c, 0x0e, 0x08, 0xc5, 0x04, + 0x08, 0x0c, 0x13, 0x11, 0x11, 0x14, 0x0c, 0x10, +}; +static u16 ngamma_params_sn20[] = { + 0x00, 0x0d, 0x11, 0x0c, 0x0c, 0x04, 0x76, 0x03, + 0x08, 0x0b, 0x16, 0x10, 0x0d, 0x16, 0x0a, 0x00, +}; +static u16 tearing_params_sn20[] = {0x00}; + +/* SCF0403852GGU04 model commands parameters */ +static u16 memaccess_params_sn04[] = {0x08}; +static u16 pixfmt_params_sn04[] = {0x66}; +static u16 modectl_params_sn04[] = {0x01}; +static u16 dispfunc_params_sn04[] = {0x22, 0xe2, 0xFF, 0x04}; +static u16 vcom_params_sn04[] = {0x00, 0x6A}; +static u16 pgamma_params_sn04[] = { + 0x00, 0x07, 0x0d, 0x10, 0x13, 0x19, 0x0f, 0x0c, + 0x05, 0x08, 0x06, 0x13, 0x0f, 0x30, 0x20, 0x1f, +}; +static u16 ngamma_params_sn04[] = { + 0x1F, 0x20, 0x30, 0x0F, 0x13, 0x06, 0x08, 0x05, + 0x0C, 0x0F, 0x19, 0x13, 0x10, 0x0D, 0x07, 0x00, +}; +static u16 dispinv_params_sn04[] = {0x02}; + +/* Common commands */ +static struct scf0403_cmd scf0403_cmd_slpout = {0x11, NULL, 0}; +static struct scf0403_cmd scf0403_cmd_dison = {0x29, NULL, 0}; + +/* SCF0403852GGU04 init sequence */ +static struct scf0403_initseq_entry scf0403_initseq_sn04[] = { + {{0x36, memaccess_params_sn04, ARRAY_SIZE(memaccess_params_sn04)}, 0}, + {{0x3A, pixfmt_params_sn04, ARRAY_SIZE(pixfmt_params_sn04)}, 0}, + {{0xB6, dispfunc_params_sn04, ARRAY_SIZE(dispfunc_params_sn04)}, 0}, + {{0xC5, vcom_params_sn04, ARRAY_SIZE(vcom_params_sn04)}, 0}, + {{0xE0, pgamma_params_sn04, ARRAY_SIZE(pgamma_params_sn04)}, 0}, + {{0xE1, ngamma_params_sn04, ARRAY_SIZE(ngamma_params_sn04)}, 20}, + {{0xB0, modectl_params_sn04, ARRAY_SIZE(modectl_params_sn04)}, 0}, + {{0xB4, dispinv_params_sn04, ARRAY_SIZE(dispinv_params_sn04)}, 100}, +}; + +/* SCF0403526GGU20 init sequence */ +static struct scf0403_initseq_entry scf0403_initseq_sn20[] = { + {{0xff, extcmd_params_sn20, ARRAY_SIZE(extcmd_params_sn20)}, 0}, + {{0xba, spiinttype_params_sn20, ARRAY_SIZE(spiinttype_params_sn20)}, 0}, + {{0xbc, bc_params_sn20, ARRAY_SIZE(bc_params_sn20)}, 0}, + {{0xbd, bd_params_sn20, ARRAY_SIZE(bd_params_sn20)}, 0}, + {{0xbe, be_params_sn20, ARRAY_SIZE(be_params_sn20)}, 0}, + {{0xc7, vcom_params_sn20, ARRAY_SIZE(vcom_params_sn20)}, 0}, + {{0xed, vmesur_params_sn20, ARRAY_SIZE(vmesur_params_sn20)}, 0}, + {{0xc0, powerctl_params_sn20, ARRAY_SIZE(powerctl_params_sn20)}, 0}, + {{0xfc, lvglvolt_params_sn20, ARRAY_SIZE(lvglvolt_params_sn20)}, 0}, + {{0xb6, dispfunc_params_sn20, ARRAY_SIZE(dispfunc_params_sn20)}, 0}, + {{0xdf, engsetting_params_sn20, ARRAY_SIZE(engsetting_params_sn20)}, 0}, + {{0xf3, dvddvolt_params_sn20, ARRAY_SIZE(dvddvolt_params_sn20)}, 0}, + {{0xb4, dispinv_params_sn20, ARRAY_SIZE(dispinv_params_sn20)}, 0}, + {{0xf7, panelres_params_sn20, ARRAY_SIZE(panelres_params_sn20)}, 0}, + {{0xb1, framerate_params_sn20, ARRAY_SIZE(framerate_params_sn20)}, 0}, + {{0xf2, timing_params_sn20, ARRAY_SIZE(timing_params_sn20)}, 0}, + {{0xc1, powerctl2_params_sn20, ARRAY_SIZE(powerctl2_params_sn20)}, 0}, + {{0x36, memaccess_params_sn20, ARRAY_SIZE(memaccess_params_sn20)}, 0}, + {{0x3a, pixfmt_params_sn20, ARRAY_SIZE(pixfmt_params_sn20)}, 0}, + {{0xe0, pgamma_params_sn20, ARRAY_SIZE(pgamma_params_sn20)}, 0}, + {{0xe1, ngamma_params_sn20, ARRAY_SIZE(ngamma_params_sn20)}, 0}, + {{0x35, tearing_params_sn20, ARRAY_SIZE(tearing_params_sn20)}, 0}, +}; + +static void scf0403_gpio_reset(unsigned int gpio) +{ + if (!gpio_is_valid(gpio)) + return; + + gpio_set_value(gpio, 1); + mdelay(100); + gpio_set_value(gpio, 0); + mdelay(40); + gpio_set_value(gpio, 1); + mdelay(100); +} + +static int scf0403_spi_read_rddid(struct spi_slave *spi, u32 *rddid) +{ + int error = 0; + u8 ids_buf = 0x00; + u16 dummy_buf = 0x00; + u16 cmd = 0x04; + + error = spi_set_wordlen(spi, 9); + if (error) + return error; + + /* Here 9 bits required to transmit a command */ + error = spi_xfer(spi, 9, &cmd, NULL, SPI_XFER_ONCE); + if (error) + return error; + + /* + * Here 8 + 1 bits required to arrange extra clock cycle + * before the first data bit. + * According to the datasheet - first parameter is the dummy data. + */ + error = spi_xfer(spi, 9, NULL, &dummy_buf, SPI_XFER_ONCE); + if (error) + return error; + + error = spi_set_wordlen(spi, 8); + if (error) + return error; + + /* Read rest of the data */ + error = spi_xfer(spi, 8, NULL, &ids_buf, SPI_XFER_ONCE); + if (error) + return error; + + *rddid = ids_buf; + + return 0; +} + +static int scf0403_spi_transfer(struct spi_slave *spi, struct scf0403_cmd *cmd) +{ + int i, error; + u32 command = cmd->cmd; + u32 msg; + + error = spi_set_wordlen(spi, 9); + if (error) + return error; + + error = spi_xfer(spi, 9, &command, NULL, SPI_XFER_ONCE); + if (error) + return error; + + for (i = 0; i < cmd->count; i++) { + msg = (cmd->params[i] | 0x100); + error = spi_xfer(spi, 9, &msg, NULL, SPI_XFER_ONCE); + if (error) + return error; + } + + return 0; +} + +static void scf0403_lcd_init(struct scf0403_priv *priv) +{ + int i; + + /* reset LCD */ + scf0403_gpio_reset(priv->reset_gpio); + + for (i = 0; i < priv->seq_size; i++) { + if (scf0403_spi_transfer(priv->spi, &priv->init_seq[i].cmd) < 0) + puts("SPI transfer failed\n"); + + mdelay(priv->init_seq[i].delay_ms); + } +} + +static int scf0403_request_reset_gpio(unsigned gpio) +{ + int err = gpio_request(gpio, "lcd reset"); + + if (err) + return err; + + err = gpio_direction_output(gpio, 0); + if (err) + gpio_free(gpio); + + return err; +} + +int scf0403_init(int reset_gpio) +{ + int error; + + if (gpio_is_valid(reset_gpio)) { + error = scf0403_request_reset_gpio(reset_gpio); + if (error) { + printf("Failed requesting reset GPIO%d: %d\n", + reset_gpio, error); + return error; + } + } + + priv.reset_gpio = reset_gpio; + priv.spi = spi_setup_slave(3, 0, 1000000, SPI_MODE_0); + error = spi_claim_bus(priv.spi); + if (error) + goto bus_claim_fail; + + /* reset LCD */ + scf0403_gpio_reset(reset_gpio); + + error = scf0403_spi_read_rddid(priv.spi, &priv.rddid); + if (error) { + puts("IDs read failed\n"); + goto readid_fail; + } + + if (priv.rddid == SCF0403852GGU04_ID) { + priv.init_seq = scf0403_initseq_sn04; + priv.seq_size = ARRAY_SIZE(scf0403_initseq_sn04); + } else { + priv.init_seq = scf0403_initseq_sn20; + priv.seq_size = ARRAY_SIZE(scf0403_initseq_sn20); + } + + scf0403_lcd_init(&priv); + + /* Start operation */ + scf0403_spi_transfer(priv.spi, &scf0403_cmd_dison); + mdelay(100); + scf0403_spi_transfer(priv.spi, &scf0403_cmd_slpout); + spi_release_bus(priv.spi); + + return 0; + +readid_fail: + spi_release_bus(priv.spi); +bus_claim_fail: + if (gpio_is_valid(priv.reset_gpio)) + gpio_free(priv.reset_gpio); + + return error; +} |