+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * 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>
- */
-
-#include <common.h>
-#include <malloc.h>
-#include <asm/gpio.h>
-#include <spi.h>
-#include <linux/delay.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;
-}
projects / uboot.git / commitdiff