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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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355b200bac
They were getting this implicitly by an include of module.h from device.h -- but we are going to clean that up and break that include chain, so include module.h explicitly now. [ with contributions from Axel Lin <axel.lin@gmail.com> ] Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
648 lines
14 KiB
C
648 lines
14 KiB
C
/*
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* ams369fg06 AMOLED LCD panel driver.
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*
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* Copyright (c) 2011 Samsung Electronics Co., Ltd.
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* Author: Jingoo Han <jg1.han@samsung.com>
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*
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* Derived from drivers/video/s6e63m0.c
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include <linux/wait.h>
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#include <linux/module.h>
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#include <linux/fb.h>
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#include <linux/delay.h>
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#include <linux/gpio.h>
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#include <linux/spi/spi.h>
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#include <linux/lcd.h>
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#include <linux/backlight.h>
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#define SLEEPMSEC 0x1000
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#define ENDDEF 0x2000
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#define DEFMASK 0xFF00
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#define COMMAND_ONLY 0xFE
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#define DATA_ONLY 0xFF
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#define MAX_GAMMA_LEVEL 5
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#define GAMMA_TABLE_COUNT 21
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#define MIN_BRIGHTNESS 0
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#define MAX_BRIGHTNESS 255
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#define DEFAULT_BRIGHTNESS 150
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struct ams369fg06 {
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struct device *dev;
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struct spi_device *spi;
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unsigned int power;
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struct lcd_device *ld;
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struct backlight_device *bd;
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struct lcd_platform_data *lcd_pd;
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};
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static const unsigned short seq_display_on[] = {
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0x14, 0x03,
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ENDDEF, 0x0000
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};
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static const unsigned short seq_display_off[] = {
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0x14, 0x00,
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ENDDEF, 0x0000
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};
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static const unsigned short seq_stand_by_on[] = {
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0x1D, 0xA1,
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SLEEPMSEC, 200,
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ENDDEF, 0x0000
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};
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static const unsigned short seq_stand_by_off[] = {
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0x1D, 0xA0,
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SLEEPMSEC, 250,
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ENDDEF, 0x0000
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};
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static const unsigned short seq_setting[] = {
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0x31, 0x08,
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0x32, 0x14,
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0x30, 0x02,
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0x27, 0x01,
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0x12, 0x08,
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0x13, 0x08,
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0x15, 0x00,
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0x16, 0x00,
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0xef, 0xd0,
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DATA_ONLY, 0xe8,
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0x39, 0x44,
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0x40, 0x00,
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0x41, 0x3f,
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0x42, 0x2a,
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0x43, 0x27,
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0x44, 0x27,
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0x45, 0x1f,
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0x46, 0x44,
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0x50, 0x00,
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0x51, 0x00,
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0x52, 0x17,
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0x53, 0x24,
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0x54, 0x26,
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0x55, 0x1f,
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0x56, 0x43,
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0x60, 0x00,
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0x61, 0x3f,
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0x62, 0x2a,
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0x63, 0x25,
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0x64, 0x24,
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0x65, 0x1b,
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0x66, 0x5c,
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0x17, 0x22,
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0x18, 0x33,
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0x19, 0x03,
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0x1a, 0x01,
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0x22, 0xa4,
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0x23, 0x00,
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0x26, 0xa0,
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0x1d, 0xa0,
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SLEEPMSEC, 300,
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0x14, 0x03,
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ENDDEF, 0x0000
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};
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/* gamma value: 2.2 */
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static const unsigned int ams369fg06_22_250[] = {
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0x00, 0x3f, 0x2a, 0x27, 0x27, 0x1f, 0x44,
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0x00, 0x00, 0x17, 0x24, 0x26, 0x1f, 0x43,
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0x00, 0x3f, 0x2a, 0x25, 0x24, 0x1b, 0x5c,
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};
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static const unsigned int ams369fg06_22_200[] = {
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0x00, 0x3f, 0x28, 0x29, 0x27, 0x21, 0x3e,
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0x00, 0x00, 0x10, 0x25, 0x27, 0x20, 0x3d,
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0x00, 0x3f, 0x28, 0x27, 0x25, 0x1d, 0x53,
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};
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static const unsigned int ams369fg06_22_150[] = {
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0x00, 0x3f, 0x2d, 0x29, 0x28, 0x23, 0x37,
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0x00, 0x00, 0x0b, 0x25, 0x28, 0x22, 0x36,
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0x00, 0x3f, 0x2b, 0x28, 0x26, 0x1f, 0x4a,
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};
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static const unsigned int ams369fg06_22_100[] = {
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0x00, 0x3f, 0x30, 0x2a, 0x2b, 0x24, 0x2f,
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0x00, 0x00, 0x00, 0x25, 0x29, 0x24, 0x2e,
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0x00, 0x3f, 0x2f, 0x29, 0x29, 0x21, 0x3f,
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};
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static const unsigned int ams369fg06_22_50[] = {
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0x00, 0x3f, 0x3c, 0x2c, 0x2d, 0x27, 0x24,
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0x00, 0x00, 0x00, 0x22, 0x2a, 0x27, 0x23,
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0x00, 0x3f, 0x3b, 0x2c, 0x2b, 0x24, 0x31,
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};
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struct ams369fg06_gamma {
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unsigned int *gamma_22_table[MAX_GAMMA_LEVEL];
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};
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static struct ams369fg06_gamma gamma_table = {
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.gamma_22_table[0] = (unsigned int *)&ams369fg06_22_50,
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.gamma_22_table[1] = (unsigned int *)&ams369fg06_22_100,
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.gamma_22_table[2] = (unsigned int *)&ams369fg06_22_150,
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.gamma_22_table[3] = (unsigned int *)&ams369fg06_22_200,
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.gamma_22_table[4] = (unsigned int *)&ams369fg06_22_250,
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};
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static int ams369fg06_spi_write_byte(struct ams369fg06 *lcd, int addr, int data)
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{
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u16 buf[1];
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struct spi_message msg;
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struct spi_transfer xfer = {
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.len = 2,
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.tx_buf = buf,
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};
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buf[0] = (addr << 8) | data;
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spi_message_init(&msg);
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spi_message_add_tail(&xfer, &msg);
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return spi_sync(lcd->spi, &msg);
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}
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static int ams369fg06_spi_write(struct ams369fg06 *lcd, unsigned char address,
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unsigned char command)
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{
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int ret = 0;
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if (address != DATA_ONLY)
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ret = ams369fg06_spi_write_byte(lcd, 0x70, address);
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if (command != COMMAND_ONLY)
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ret = ams369fg06_spi_write_byte(lcd, 0x72, command);
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return ret;
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}
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static int ams369fg06_panel_send_sequence(struct ams369fg06 *lcd,
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const unsigned short *wbuf)
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{
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int ret = 0, i = 0;
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while ((wbuf[i] & DEFMASK) != ENDDEF) {
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if ((wbuf[i] & DEFMASK) != SLEEPMSEC) {
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ret = ams369fg06_spi_write(lcd, wbuf[i], wbuf[i+1]);
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if (ret)
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break;
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} else
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mdelay(wbuf[i+1]);
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i += 2;
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}
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return ret;
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}
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static int _ams369fg06_gamma_ctl(struct ams369fg06 *lcd,
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const unsigned int *gamma)
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{
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unsigned int i = 0;
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int ret = 0;
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for (i = 0 ; i < GAMMA_TABLE_COUNT / 3; i++) {
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ret = ams369fg06_spi_write(lcd, 0x40 + i, gamma[i]);
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ret = ams369fg06_spi_write(lcd, 0x50 + i, gamma[i+7*1]);
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ret = ams369fg06_spi_write(lcd, 0x60 + i, gamma[i+7*2]);
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if (ret) {
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dev_err(lcd->dev, "failed to set gamma table.\n");
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goto gamma_err;
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}
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}
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gamma_err:
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return ret;
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}
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static int ams369fg06_gamma_ctl(struct ams369fg06 *lcd, int brightness)
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{
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int ret = 0;
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int gamma = 0;
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if ((brightness >= 0) && (brightness <= 50))
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gamma = 0;
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else if ((brightness > 50) && (brightness <= 100))
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gamma = 1;
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else if ((brightness > 100) && (brightness <= 150))
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gamma = 2;
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else if ((brightness > 150) && (brightness <= 200))
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gamma = 3;
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else if ((brightness > 200) && (brightness <= 255))
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gamma = 4;
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ret = _ams369fg06_gamma_ctl(lcd, gamma_table.gamma_22_table[gamma]);
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return ret;
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}
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static int ams369fg06_ldi_init(struct ams369fg06 *lcd)
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{
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int ret, i;
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static const unsigned short *init_seq[] = {
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seq_setting,
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seq_stand_by_off,
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};
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for (i = 0; i < ARRAY_SIZE(init_seq); i++) {
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ret = ams369fg06_panel_send_sequence(lcd, init_seq[i]);
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if (ret)
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break;
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}
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return ret;
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}
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static int ams369fg06_ldi_enable(struct ams369fg06 *lcd)
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{
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int ret, i;
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static const unsigned short *init_seq[] = {
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seq_stand_by_off,
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seq_display_on,
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};
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for (i = 0; i < ARRAY_SIZE(init_seq); i++) {
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ret = ams369fg06_panel_send_sequence(lcd, init_seq[i]);
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if (ret)
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break;
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}
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return ret;
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}
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static int ams369fg06_ldi_disable(struct ams369fg06 *lcd)
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{
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int ret, i;
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static const unsigned short *init_seq[] = {
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seq_display_off,
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seq_stand_by_on,
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};
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for (i = 0; i < ARRAY_SIZE(init_seq); i++) {
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ret = ams369fg06_panel_send_sequence(lcd, init_seq[i]);
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if (ret)
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break;
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}
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return ret;
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}
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static int ams369fg06_power_is_on(int power)
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{
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return ((power) <= FB_BLANK_NORMAL);
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}
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static int ams369fg06_power_on(struct ams369fg06 *lcd)
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{
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int ret = 0;
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struct lcd_platform_data *pd = NULL;
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struct backlight_device *bd = NULL;
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pd = lcd->lcd_pd;
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if (!pd) {
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dev_err(lcd->dev, "platform data is NULL.\n");
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return -EFAULT;
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}
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bd = lcd->bd;
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if (!bd) {
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dev_err(lcd->dev, "backlight device is NULL.\n");
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return -EFAULT;
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}
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if (!pd->power_on) {
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dev_err(lcd->dev, "power_on is NULL.\n");
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return -EFAULT;
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} else {
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pd->power_on(lcd->ld, 1);
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mdelay(pd->power_on_delay);
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}
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if (!pd->reset) {
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dev_err(lcd->dev, "reset is NULL.\n");
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return -EFAULT;
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} else {
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pd->reset(lcd->ld);
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mdelay(pd->reset_delay);
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}
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ret = ams369fg06_ldi_init(lcd);
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if (ret) {
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dev_err(lcd->dev, "failed to initialize ldi.\n");
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return ret;
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}
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ret = ams369fg06_ldi_enable(lcd);
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if (ret) {
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dev_err(lcd->dev, "failed to enable ldi.\n");
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return ret;
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}
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/* set brightness to current value after power on or resume. */
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ret = ams369fg06_gamma_ctl(lcd, bd->props.brightness);
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if (ret) {
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dev_err(lcd->dev, "lcd gamma setting failed.\n");
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return ret;
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}
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return 0;
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}
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static int ams369fg06_power_off(struct ams369fg06 *lcd)
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{
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int ret = 0;
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struct lcd_platform_data *pd = NULL;
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pd = lcd->lcd_pd;
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if (!pd) {
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dev_err(lcd->dev, "platform data is NULL\n");
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return -EFAULT;
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}
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ret = ams369fg06_ldi_disable(lcd);
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if (ret) {
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dev_err(lcd->dev, "lcd setting failed.\n");
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return -EIO;
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}
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mdelay(pd->power_off_delay);
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if (!pd->power_on) {
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dev_err(lcd->dev, "power_on is NULL.\n");
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return -EFAULT;
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} else
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pd->power_on(lcd->ld, 0);
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return 0;
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}
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static int ams369fg06_power(struct ams369fg06 *lcd, int power)
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{
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int ret = 0;
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if (ams369fg06_power_is_on(power) &&
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!ams369fg06_power_is_on(lcd->power))
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ret = ams369fg06_power_on(lcd);
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else if (!ams369fg06_power_is_on(power) &&
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ams369fg06_power_is_on(lcd->power))
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ret = ams369fg06_power_off(lcd);
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if (!ret)
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lcd->power = power;
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return ret;
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}
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static int ams369fg06_get_power(struct lcd_device *ld)
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{
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struct ams369fg06 *lcd = lcd_get_data(ld);
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return lcd->power;
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}
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static int ams369fg06_set_power(struct lcd_device *ld, int power)
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{
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struct ams369fg06 *lcd = lcd_get_data(ld);
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if (power != FB_BLANK_UNBLANK && power != FB_BLANK_POWERDOWN &&
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power != FB_BLANK_NORMAL) {
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dev_err(lcd->dev, "power value should be 0, 1 or 4.\n");
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return -EINVAL;
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}
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return ams369fg06_power(lcd, power);
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}
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static int ams369fg06_get_brightness(struct backlight_device *bd)
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{
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return bd->props.brightness;
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}
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static int ams369fg06_set_brightness(struct backlight_device *bd)
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{
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int ret = 0;
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int brightness = bd->props.brightness;
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struct ams369fg06 *lcd = dev_get_drvdata(&bd->dev);
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if (brightness < MIN_BRIGHTNESS ||
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brightness > bd->props.max_brightness) {
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dev_err(&bd->dev, "lcd brightness should be %d to %d.\n",
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MIN_BRIGHTNESS, MAX_BRIGHTNESS);
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return -EINVAL;
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}
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ret = ams369fg06_gamma_ctl(lcd, bd->props.brightness);
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if (ret) {
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dev_err(&bd->dev, "lcd brightness setting failed.\n");
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return -EIO;
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}
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return ret;
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}
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static struct lcd_ops ams369fg06_lcd_ops = {
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.get_power = ams369fg06_get_power,
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.set_power = ams369fg06_set_power,
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};
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static const struct backlight_ops ams369fg06_backlight_ops = {
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.get_brightness = ams369fg06_get_brightness,
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.update_status = ams369fg06_set_brightness,
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};
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static int __devinit ams369fg06_probe(struct spi_device *spi)
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{
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int ret = 0;
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struct ams369fg06 *lcd = NULL;
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struct lcd_device *ld = NULL;
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struct backlight_device *bd = NULL;
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struct backlight_properties props;
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lcd = kzalloc(sizeof(struct ams369fg06), GFP_KERNEL);
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if (!lcd)
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return -ENOMEM;
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/* ams369fg06 lcd panel uses 3-wire 16bits SPI Mode. */
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spi->bits_per_word = 16;
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ret = spi_setup(spi);
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if (ret < 0) {
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dev_err(&spi->dev, "spi setup failed.\n");
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goto out_free_lcd;
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}
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lcd->spi = spi;
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lcd->dev = &spi->dev;
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lcd->lcd_pd = spi->dev.platform_data;
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if (!lcd->lcd_pd) {
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dev_err(&spi->dev, "platform data is NULL\n");
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goto out_free_lcd;
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}
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ld = lcd_device_register("ams369fg06", &spi->dev, lcd,
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&ams369fg06_lcd_ops);
|
|
if (IS_ERR(ld)) {
|
|
ret = PTR_ERR(ld);
|
|
goto out_free_lcd;
|
|
}
|
|
|
|
lcd->ld = ld;
|
|
|
|
memset(&props, 0, sizeof(struct backlight_properties));
|
|
props.type = BACKLIGHT_RAW;
|
|
props.max_brightness = MAX_BRIGHTNESS;
|
|
|
|
bd = backlight_device_register("ams369fg06-bl", &spi->dev, lcd,
|
|
&ams369fg06_backlight_ops, &props);
|
|
if (IS_ERR(bd)) {
|
|
ret = PTR_ERR(bd);
|
|
goto out_lcd_unregister;
|
|
}
|
|
|
|
bd->props.brightness = DEFAULT_BRIGHTNESS;
|
|
lcd->bd = bd;
|
|
|
|
if (!lcd->lcd_pd->lcd_enabled) {
|
|
/*
|
|
* if lcd panel was off from bootloader then
|
|
* current lcd status is powerdown and then
|
|
* it enables lcd panel.
|
|
*/
|
|
lcd->power = FB_BLANK_POWERDOWN;
|
|
|
|
ams369fg06_power(lcd, FB_BLANK_UNBLANK);
|
|
} else
|
|
lcd->power = FB_BLANK_UNBLANK;
|
|
|
|
dev_set_drvdata(&spi->dev, lcd);
|
|
|
|
dev_info(&spi->dev, "ams369fg06 panel driver has been probed.\n");
|
|
|
|
return 0;
|
|
|
|
out_lcd_unregister:
|
|
lcd_device_unregister(ld);
|
|
out_free_lcd:
|
|
kfree(lcd);
|
|
return ret;
|
|
}
|
|
|
|
static int __devexit ams369fg06_remove(struct spi_device *spi)
|
|
{
|
|
struct ams369fg06 *lcd = dev_get_drvdata(&spi->dev);
|
|
|
|
ams369fg06_power(lcd, FB_BLANK_POWERDOWN);
|
|
backlight_device_unregister(lcd->bd);
|
|
lcd_device_unregister(lcd->ld);
|
|
kfree(lcd);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#if defined(CONFIG_PM)
|
|
static unsigned int before_power;
|
|
|
|
static int ams369fg06_suspend(struct spi_device *spi, pm_message_t mesg)
|
|
{
|
|
int ret = 0;
|
|
struct ams369fg06 *lcd = dev_get_drvdata(&spi->dev);
|
|
|
|
dev_dbg(&spi->dev, "lcd->power = %d\n", lcd->power);
|
|
|
|
before_power = lcd->power;
|
|
|
|
/*
|
|
* when lcd panel is suspend, lcd panel becomes off
|
|
* regardless of status.
|
|
*/
|
|
ret = ams369fg06_power(lcd, FB_BLANK_POWERDOWN);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int ams369fg06_resume(struct spi_device *spi)
|
|
{
|
|
int ret = 0;
|
|
struct ams369fg06 *lcd = dev_get_drvdata(&spi->dev);
|
|
|
|
/*
|
|
* after suspended, if lcd panel status is FB_BLANK_UNBLANK
|
|
* (at that time, before_power is FB_BLANK_UNBLANK) then
|
|
* it changes that status to FB_BLANK_POWERDOWN to get lcd on.
|
|
*/
|
|
if (before_power == FB_BLANK_UNBLANK)
|
|
lcd->power = FB_BLANK_POWERDOWN;
|
|
|
|
dev_dbg(&spi->dev, "before_power = %d\n", before_power);
|
|
|
|
ret = ams369fg06_power(lcd, before_power);
|
|
|
|
return ret;
|
|
}
|
|
#else
|
|
#define ams369fg06_suspend NULL
|
|
#define ams369fg06_resume NULL
|
|
#endif
|
|
|
|
static void ams369fg06_shutdown(struct spi_device *spi)
|
|
{
|
|
struct ams369fg06 *lcd = dev_get_drvdata(&spi->dev);
|
|
|
|
ams369fg06_power(lcd, FB_BLANK_POWERDOWN);
|
|
}
|
|
|
|
static struct spi_driver ams369fg06_driver = {
|
|
.driver = {
|
|
.name = "ams369fg06",
|
|
.bus = &spi_bus_type,
|
|
.owner = THIS_MODULE,
|
|
},
|
|
.probe = ams369fg06_probe,
|
|
.remove = __devexit_p(ams369fg06_remove),
|
|
.shutdown = ams369fg06_shutdown,
|
|
.suspend = ams369fg06_suspend,
|
|
.resume = ams369fg06_resume,
|
|
};
|
|
|
|
static int __init ams369fg06_init(void)
|
|
{
|
|
return spi_register_driver(&ams369fg06_driver);
|
|
}
|
|
|
|
static void __exit ams369fg06_exit(void)
|
|
{
|
|
spi_unregister_driver(&ams369fg06_driver);
|
|
}
|
|
|
|
module_init(ams369fg06_init);
|
|
module_exit(ams369fg06_exit);
|
|
|
|
MODULE_AUTHOR("Jingoo Han <jg1.han@samsung.com>");
|
|
MODULE_DESCRIPTION("ams369fg06 LCD Driver");
|
|
MODULE_LICENSE("GPL");
|