drivers/vidfeo/backlight: ld9040 amoled driver support
Add a ld9040 amoled panel driver. Signed-off-by: Donghwa Lee <dh09.lee@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com> Cc: Richard Purdie <rpurdie@rpsys.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Donghwa Lee
Linus Torvalds
Родитель
9517f925f2
Коммит
1baf0eb397
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@ -109,6 +109,14 @@ config LCD_S6E63M0
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If you have an S6E63M0 LCD Panel, say Y to enable its
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LCD control driver.
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config LCD_LD9040
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tristate "LD9040 AMOLED LCD Driver"
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depends on SPI && BACKLIGHT_CLASS_DEVICE
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default n
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help
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If you have an LD9040 Panel, say Y to enable its
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control driver.
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endif # LCD_CLASS_DEVICE
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#
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@ -12,6 +12,7 @@ obj-$(CONFIG_LCD_VGG2432A4) += vgg2432a4.o
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obj-$(CONFIG_LCD_TDO24M) += tdo24m.o
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obj-$(CONFIG_LCD_TOSA) += tosa_lcd.o
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obj-$(CONFIG_LCD_S6E63M0) += s6e63m0.o
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obj-$(CONFIG_LCD_LD9040) += ld9040.o
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obj-$(CONFIG_BACKLIGHT_CLASS_DEVICE) += backlight.o
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obj-$(CONFIG_BACKLIGHT_ATMEL_PWM) += atmel-pwm-bl.o
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@ -0,0 +1,819 @@
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/*
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* ld9040 AMOLED LCD panel driver.
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*
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* Copyright (c) 2011 Samsung Electronics
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* Author: Donghwa Lee <dh09.lee@samsung.com>
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* Derived from drivers/video/backlight/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/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/irq.h>
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#include <linux/interrupt.h>
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#include <linux/kernel.h>
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#include <linux/lcd.h>
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#include <linux/backlight.h>
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#include "ld9040_gamma.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 MIN_BRIGHTNESS 0
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#define MAX_BRIGHTNESS 24
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#define power_is_on(pwr) ((pwr) <= FB_BLANK_NORMAL)
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struct ld9040 {
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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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unsigned int current_brightness;
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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_swreset[] = {
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0x01, COMMAND_ONLY,
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ENDDEF, 0x00
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};
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static const unsigned short seq_user_setting[] = {
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0xF0, 0x5A,
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DATA_ONLY, 0x5A,
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ENDDEF, 0x00
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};
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static const unsigned short seq_elvss_on[] = {
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0xB1, 0x0D,
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DATA_ONLY, 0x00,
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DATA_ONLY, 0x16,
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ENDDEF, 0x00
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};
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static const unsigned short seq_gtcon[] = {
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0xF7, 0x09,
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DATA_ONLY, 0x00,
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DATA_ONLY, 0x00,
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ENDDEF, 0x00
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};
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static const unsigned short seq_panel_condition[] = {
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0xF8, 0x05,
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DATA_ONLY, 0x65,
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DATA_ONLY, 0x96,
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DATA_ONLY, 0x71,
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DATA_ONLY, 0x7D,
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DATA_ONLY, 0x19,
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DATA_ONLY, 0x3B,
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DATA_ONLY, 0x0D,
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DATA_ONLY, 0x19,
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DATA_ONLY, 0x7E,
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DATA_ONLY, 0x0D,
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DATA_ONLY, 0xE2,
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DATA_ONLY, 0x00,
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DATA_ONLY, 0x00,
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DATA_ONLY, 0x7E,
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DATA_ONLY, 0x7D,
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DATA_ONLY, 0x07,
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DATA_ONLY, 0x07,
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DATA_ONLY, 0x20,
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DATA_ONLY, 0x20,
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DATA_ONLY, 0x20,
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DATA_ONLY, 0x02,
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DATA_ONLY, 0x02,
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ENDDEF, 0x00
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};
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static const unsigned short seq_gamma_set1[] = {
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0xF9, 0x00,
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DATA_ONLY, 0xA7,
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DATA_ONLY, 0xB4,
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DATA_ONLY, 0xAE,
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DATA_ONLY, 0xBF,
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DATA_ONLY, 0x00,
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DATA_ONLY, 0x91,
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DATA_ONLY, 0x00,
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DATA_ONLY, 0xB2,
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DATA_ONLY, 0xB4,
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DATA_ONLY, 0xAA,
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DATA_ONLY, 0xBB,
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DATA_ONLY, 0x00,
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DATA_ONLY, 0xAC,
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DATA_ONLY, 0x00,
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DATA_ONLY, 0xB3,
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DATA_ONLY, 0xB1,
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DATA_ONLY, 0xAA,
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DATA_ONLY, 0xBC,
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DATA_ONLY, 0x00,
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DATA_ONLY, 0xB3,
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ENDDEF, 0x00
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};
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static const unsigned short seq_gamma_ctrl[] = {
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0xFB, 0x02,
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DATA_ONLY, 0x5A,
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ENDDEF, 0x00
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};
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static const unsigned short seq_gamma_start[] = {
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0xF9, COMMAND_ONLY,
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ENDDEF, 0x00
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};
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static const unsigned short seq_apon[] = {
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0xF3, 0x00,
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DATA_ONLY, 0x00,
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DATA_ONLY, 0x00,
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DATA_ONLY, 0x0A,
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DATA_ONLY, 0x02,
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ENDDEF, 0x00
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};
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static const unsigned short seq_display_ctrl[] = {
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0xF2, 0x02,
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DATA_ONLY, 0x08,
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DATA_ONLY, 0x08,
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DATA_ONLY, 0x10,
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DATA_ONLY, 0x10,
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ENDDEF, 0x00
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};
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static const unsigned short seq_manual_pwr[] = {
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0xB0, 0x04,
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ENDDEF, 0x00
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};
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static const unsigned short seq_pwr_ctrl[] = {
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0xF4, 0x0A,
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DATA_ONLY, 0x87,
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DATA_ONLY, 0x25,
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DATA_ONLY, 0x6A,
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DATA_ONLY, 0x44,
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DATA_ONLY, 0x02,
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DATA_ONLY, 0x88,
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ENDDEF, 0x00
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};
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static const unsigned short seq_sleep_out[] = {
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0x11, COMMAND_ONLY,
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ENDDEF, 0x00
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};
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static const unsigned short seq_sleep_in[] = {
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0x10, COMMAND_ONLY,
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ENDDEF, 0x00
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};
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static const unsigned short seq_display_on[] = {
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0x29, COMMAND_ONLY,
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ENDDEF, 0x00
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};
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static const unsigned short seq_display_off[] = {
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0x28, COMMAND_ONLY,
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ENDDEF, 0x00
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};
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static const unsigned short seq_vci1_1st_en[] = {
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0xF3, 0x10,
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DATA_ONLY, 0x00,
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DATA_ONLY, 0x00,
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DATA_ONLY, 0x00,
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DATA_ONLY, 0x02,
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ENDDEF, 0x00
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};
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static const unsigned short seq_vl1_en[] = {
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0xF3, 0x11,
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DATA_ONLY, 0x00,
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DATA_ONLY, 0x00,
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DATA_ONLY, 0x00,
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DATA_ONLY, 0x02,
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ENDDEF, 0x00
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};
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static const unsigned short seq_vl2_en[] = {
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0xF3, 0x13,
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DATA_ONLY, 0x00,
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DATA_ONLY, 0x00,
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DATA_ONLY, 0x00,
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DATA_ONLY, 0x02,
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ENDDEF, 0x00
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};
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static const unsigned short seq_vci1_2nd_en[] = {
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0xF3, 0x33,
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DATA_ONLY, 0x00,
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DATA_ONLY, 0x00,
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DATA_ONLY, 0x00,
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DATA_ONLY, 0x02,
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ENDDEF, 0x00
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};
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static const unsigned short seq_vl3_en[] = {
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0xF3, 0x37,
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DATA_ONLY, 0x00,
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DATA_ONLY, 0x00,
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DATA_ONLY, 0x00,
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DATA_ONLY, 0x02,
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ENDDEF, 0x00
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};
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static const unsigned short seq_vreg1_amp_en[] = {
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0xF3, 0x37,
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DATA_ONLY, 0x01,
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DATA_ONLY, 0x00,
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DATA_ONLY, 0x00,
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DATA_ONLY, 0x02,
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ENDDEF, 0x00
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};
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static const unsigned short seq_vgh_amp_en[] = {
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0xF3, 0x37,
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DATA_ONLY, 0x11,
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DATA_ONLY, 0x00,
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DATA_ONLY, 0x00,
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DATA_ONLY, 0x02,
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ENDDEF, 0x00
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};
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static const unsigned short seq_vgl_amp_en[] = {
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0xF3, 0x37,
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DATA_ONLY, 0x31,
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DATA_ONLY, 0x00,
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DATA_ONLY, 0x00,
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DATA_ONLY, 0x02,
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ENDDEF, 0x00
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};
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static const unsigned short seq_vmos_amp_en[] = {
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0xF3, 0x37,
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DATA_ONLY, 0xB1,
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DATA_ONLY, 0x00,
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DATA_ONLY, 0x00,
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DATA_ONLY, 0x03,
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ENDDEF, 0x00
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};
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static const unsigned short seq_vint_amp_en[] = {
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0xF3, 0x37,
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DATA_ONLY, 0xF1,
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/* DATA_ONLY, 0x71, VMOS/VBL/VBH not used */
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DATA_ONLY, 0x00,
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DATA_ONLY, 0x00,
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DATA_ONLY, 0x03,
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/* DATA_ONLY, 0x02, VMOS/VBL/VBH not used */
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ENDDEF, 0x00
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};
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static const unsigned short seq_vbh_amp_en[] = {
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0xF3, 0x37,
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DATA_ONLY, 0xF9,
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DATA_ONLY, 0x00,
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DATA_ONLY, 0x00,
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DATA_ONLY, 0x03,
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ENDDEF, 0x00
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};
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static const unsigned short seq_vbl_amp_en[] = {
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0xF3, 0x37,
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DATA_ONLY, 0xFD,
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DATA_ONLY, 0x00,
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DATA_ONLY, 0x00,
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DATA_ONLY, 0x03,
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ENDDEF, 0x00
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};
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static const unsigned short seq_gam_amp_en[] = {
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0xF3, 0x37,
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DATA_ONLY, 0xFF,
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/* DATA_ONLY, 0x73, VMOS/VBL/VBH not used */
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DATA_ONLY, 0x00,
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DATA_ONLY, 0x00,
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DATA_ONLY, 0x03,
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/* DATA_ONLY, 0x02, VMOS/VBL/VBH not used */
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ENDDEF, 0x00
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};
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static const unsigned short seq_sd_amp_en[] = {
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0xF3, 0x37,
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DATA_ONLY, 0xFF,
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/* DATA_ONLY, 0x73, VMOS/VBL/VBH not used */
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DATA_ONLY, 0x80,
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DATA_ONLY, 0x00,
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DATA_ONLY, 0x03,
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/* DATA_ONLY, 0x02, VMOS/VBL/VBH not used */
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ENDDEF, 0x00
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};
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static const unsigned short seq_gls_en[] = {
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0xF3, 0x37,
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DATA_ONLY, 0xFF,
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/* DATA_ONLY, 0x73, VMOS/VBL/VBH not used */
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DATA_ONLY, 0x81,
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DATA_ONLY, 0x00,
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DATA_ONLY, 0x03,
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/* DATA_ONLY, 0x02, VMOS/VBL/VBH not used */
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ENDDEF, 0x00
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};
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static const unsigned short seq_els_en[] = {
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0xF3, 0x37,
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DATA_ONLY, 0xFF,
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/* DATA_ONLY, 0x73, VMOS/VBL/VBH not used */
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DATA_ONLY, 0x83,
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DATA_ONLY, 0x00,
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DATA_ONLY, 0x03,
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/* DATA_ONLY, 0x02, VMOS/VBL/VBH not used */
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ENDDEF, 0x00
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};
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static const unsigned short seq_el_on[] = {
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0xF3, 0x37,
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DATA_ONLY, 0xFF,
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/* DATA_ONLY, 0x73, VMOS/VBL/VBH not used */
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DATA_ONLY, 0x87,
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DATA_ONLY, 0x00,
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DATA_ONLY, 0x03,
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/* DATA_ONLY, 0x02, VMOS/VBL/VBH not used */
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ENDDEF, 0x00
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};
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static int ld9040_spi_write_byte(struct ld9040 *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 ld9040_spi_write(struct ld9040 *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 = ld9040_spi_write_byte(lcd, 0x0, address);
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if (command != COMMAND_ONLY)
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ret = ld9040_spi_write_byte(lcd, 0x1, command);
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return ret;
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}
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static int ld9040_panel_send_sequence(struct ld9040 *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 = ld9040_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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udelay(wbuf[i+1]*1000);
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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 _ld9040_gamma_ctl(struct ld9040 *lcd, 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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/* start gamma table updating. */
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ret = ld9040_panel_send_sequence(lcd, seq_gamma_start);
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if (ret) {
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dev_err(lcd->dev, "failed to disable gamma table updating.\n");
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goto gamma_err;
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}
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for (i = 0 ; i < GAMMA_TABLE_COUNT; i++) {
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ret = ld9040_spi_write(lcd, DATA_ONLY, gamma[i]);
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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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/* update gamma table. */
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ret = ld9040_panel_send_sequence(lcd, seq_gamma_ctrl);
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if (ret)
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dev_err(lcd->dev, "failed to update gamma table.\n");
|
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|
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gamma_err:
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return ret;
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}
|
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|
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static int ld9040_gamma_ctl(struct ld9040 *lcd, int gamma)
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{
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int ret = 0;
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|
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ret = _ld9040_gamma_ctl(lcd, gamma_table.gamma_22_table[gamma]);
|
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|
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return ret;
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}
|
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|
||||
|
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static int ld9040_ldi_init(struct ld9040 *lcd)
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{
|
||||
int ret, i;
|
||||
static const unsigned short *init_seq[] = {
|
||||
seq_user_setting,
|
||||
seq_panel_condition,
|
||||
seq_display_ctrl,
|
||||
seq_manual_pwr,
|
||||
seq_elvss_on,
|
||||
seq_gtcon,
|
||||
seq_gamma_set1,
|
||||
seq_gamma_ctrl,
|
||||
seq_sleep_out,
|
||||
};
|
||||
|
||||
for (i = 0; i < ARRAY_SIZE(init_seq); i++) {
|
||||
ret = ld9040_panel_send_sequence(lcd, init_seq[i]);
|
||||
/* workaround: minimum delay time for transferring CMD */
|
||||
udelay(300);
|
||||
if (ret)
|
||||
break;
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int ld9040_ldi_enable(struct ld9040 *lcd)
|
||||
{
|
||||
int ret = 0;
|
||||
|
||||
ret = ld9040_panel_send_sequence(lcd, seq_display_on);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int ld9040_ldi_disable(struct ld9040 *lcd)
|
||||
{
|
||||
int ret;
|
||||
|
||||
ret = ld9040_panel_send_sequence(lcd, seq_display_off);
|
||||
ret = ld9040_panel_send_sequence(lcd, seq_sleep_in);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int ld9040_power_on(struct ld9040 *lcd)
|
||||
{
|
||||
int ret = 0;
|
||||
struct lcd_platform_data *pd = NULL;
|
||||
pd = lcd->lcd_pd;
|
||||
if (!pd) {
|
||||
dev_err(lcd->dev, "platform data is NULL.\n");
|
||||
return -EFAULT;
|
||||
}
|
||||
|
||||
if (!pd->power_on) {
|
||||
dev_err(lcd->dev, "power_on is NULL.\n");
|
||||
return -EFAULT;
|
||||
} else {
|
||||
pd->power_on(lcd->ld, 1);
|
||||
mdelay(pd->power_on_delay);
|
||||
}
|
||||
|
||||
if (!pd->reset) {
|
||||
dev_err(lcd->dev, "reset is NULL.\n");
|
||||
return -EFAULT;
|
||||
} else {
|
||||
pd->reset(lcd->ld);
|
||||
mdelay(pd->reset_delay);
|
||||
}
|
||||
|
||||
ret = ld9040_ldi_init(lcd);
|
||||
if (ret) {
|
||||
dev_err(lcd->dev, "failed to initialize ldi.\n");
|
||||
return ret;
|
||||
}
|
||||
|
||||
ret = ld9040_ldi_enable(lcd);
|
||||
if (ret) {
|
||||
dev_err(lcd->dev, "failed to enable ldi.\n");
|
||||
return ret;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int ld9040_power_off(struct ld9040 *lcd)
|
||||
{
|
||||
int ret = 0;
|
||||
struct lcd_platform_data *pd = NULL;
|
||||
|
||||
pd = lcd->lcd_pd;
|
||||
if (!pd) {
|
||||
dev_err(lcd->dev, "platform data is NULL.\n");
|
||||
return -EFAULT;
|
||||
}
|
||||
|
||||
ret = ld9040_ldi_disable(lcd);
|
||||
if (ret) {
|
||||
dev_err(lcd->dev, "lcd setting failed.\n");
|
||||
return -EIO;
|
||||
}
|
||||
|
||||
mdelay(pd->power_off_delay);
|
||||
|
||||
if (!pd->power_on) {
|
||||
dev_err(lcd->dev, "power_on is NULL.\n");
|
||||
return -EFAULT;
|
||||
} else
|
||||
pd->power_on(lcd->ld, 0);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int ld9040_power(struct ld9040 *lcd, int power)
|
||||
{
|
||||
int ret = 0;
|
||||
|
||||
if (power_is_on(power) && !power_is_on(lcd->power))
|
||||
ret = ld9040_power_on(lcd);
|
||||
else if (!power_is_on(power) && power_is_on(lcd->power))
|
||||
ret = ld9040_power_off(lcd);
|
||||
|
||||
if (!ret)
|
||||
lcd->power = power;
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int ld9040_set_power(struct lcd_device *ld, int power)
|
||||
{
|
||||
struct ld9040 *lcd = lcd_get_data(ld);
|
||||
|
||||
if (power != FB_BLANK_UNBLANK && power != FB_BLANK_POWERDOWN &&
|
||||
power != FB_BLANK_NORMAL) {
|
||||
dev_err(lcd->dev, "power value should be 0, 1 or 4.\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
return ld9040_power(lcd, power);
|
||||
}
|
||||
|
||||
static int ld9040_get_power(struct lcd_device *ld)
|
||||
{
|
||||
struct ld9040 *lcd = lcd_get_data(ld);
|
||||
|
||||
return lcd->power;
|
||||
}
|
||||
|
||||
static int ld9040_get_brightness(struct backlight_device *bd)
|
||||
{
|
||||
return bd->props.brightness;
|
||||
}
|
||||
|
||||
static int ld9040_set_brightness(struct backlight_device *bd)
|
||||
{
|
||||
int ret = 0, brightness = bd->props.brightness;
|
||||
struct ld9040 *lcd = bl_get_data(bd);
|
||||
|
||||
if (brightness < MIN_BRIGHTNESS ||
|
||||
brightness > bd->props.max_brightness) {
|
||||
dev_err(&bd->dev, "lcd brightness should be %d to %d.\n",
|
||||
MIN_BRIGHTNESS, MAX_BRIGHTNESS);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
ret = ld9040_gamma_ctl(lcd, bd->props.brightness);
|
||||
if (ret) {
|
||||
dev_err(&bd->dev, "lcd brightness setting failed.\n");
|
||||
return -EIO;
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static struct lcd_ops ld9040_lcd_ops = {
|
||||
.set_power = ld9040_set_power,
|
||||
.get_power = ld9040_get_power,
|
||||
};
|
||||
|
||||
static const struct backlight_ops ld9040_backlight_ops = {
|
||||
.get_brightness = ld9040_get_brightness,
|
||||
.update_status = ld9040_set_brightness,
|
||||
};
|
||||
|
||||
|
||||
static int ld9040_probe(struct spi_device *spi)
|
||||
{
|
||||
int ret = 0;
|
||||
struct ld9040 *lcd = NULL;
|
||||
struct lcd_device *ld = NULL;
|
||||
struct backlight_device *bd = NULL;
|
||||
|
||||
lcd = kzalloc(sizeof(struct ld9040), GFP_KERNEL);
|
||||
if (!lcd)
|
||||
return -ENOMEM;
|
||||
|
||||
/* ld9040 lcd panel uses 3-wire 9bits SPI Mode. */
|
||||
spi->bits_per_word = 9;
|
||||
|
||||
ret = spi_setup(spi);
|
||||
if (ret < 0) {
|
||||
dev_err(&spi->dev, "spi setup failed.\n");
|
||||
goto out_free_lcd;
|
||||
}
|
||||
|
||||
lcd->spi = spi;
|
||||
lcd->dev = &spi->dev;
|
||||
|
||||
lcd->lcd_pd = spi->dev.platform_data;
|
||||
if (!lcd->lcd_pd) {
|
||||
dev_err(&spi->dev, "platform data is NULL.\n");
|
||||
goto out_free_lcd;
|
||||
}
|
||||
|
||||
ld = lcd_device_register("ld9040", &spi->dev, lcd, &ld9040_lcd_ops);
|
||||
if (IS_ERR(ld)) {
|
||||
ret = PTR_ERR(ld);
|
||||
goto out_free_lcd;
|
||||
}
|
||||
|
||||
lcd->ld = ld;
|
||||
|
||||
bd = backlight_device_register("ld9040-bl", &spi->dev,
|
||||
lcd, &ld9040_backlight_ops, NULL);
|
||||
if (IS_ERR(ld)) {
|
||||
ret = PTR_ERR(ld);
|
||||
goto out_free_lcd;
|
||||
}
|
||||
|
||||
bd->props.max_brightness = MAX_BRIGHTNESS;
|
||||
bd->props.brightness = MAX_BRIGHTNESS;
|
||||
lcd->bd = bd;
|
||||
|
||||
/*
|
||||
* if lcd panel was on from bootloader like u-boot then
|
||||
* do not lcd on.
|
||||
*/
|
||||
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;
|
||||
|
||||
ld9040_power(lcd, FB_BLANK_UNBLANK);
|
||||
} else
|
||||
lcd->power = FB_BLANK_UNBLANK;
|
||||
|
||||
dev_set_drvdata(&spi->dev, lcd);
|
||||
|
||||
dev_info(&spi->dev, "ld9040 panel driver has been probed.\n");
|
||||
return 0;
|
||||
|
||||
out_free_lcd:
|
||||
kfree(lcd);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int __devexit ld9040_remove(struct spi_device *spi)
|
||||
{
|
||||
struct ld9040 *lcd = dev_get_drvdata(&spi->dev);
|
||||
|
||||
ld9040_power(lcd, FB_BLANK_POWERDOWN);
|
||||
lcd_device_unregister(lcd->ld);
|
||||
kfree(lcd);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
#if defined(CONFIG_PM)
|
||||
static int ld9040_suspend(struct spi_device *spi, pm_message_t mesg)
|
||||
{
|
||||
int ret = 0;
|
||||
struct ld9040 *lcd = dev_get_drvdata(&spi->dev);
|
||||
|
||||
dev_dbg(&spi->dev, "lcd->power = %d\n", lcd->power);
|
||||
|
||||
/*
|
||||
* when lcd panel is suspend, lcd panel becomes off
|
||||
* regardless of status.
|
||||
*/
|
||||
ret = ld9040_power(lcd, FB_BLANK_POWERDOWN);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int ld9040_resume(struct spi_device *spi)
|
||||
{
|
||||
int ret = 0;
|
||||
struct ld9040 *lcd = dev_get_drvdata(&spi->dev);
|
||||
|
||||
lcd->power = FB_BLANK_POWERDOWN;
|
||||
|
||||
ret = ld9040_power(lcd, FB_BLANK_UNBLANK);
|
||||
|
||||
return ret;
|
||||
}
|
||||
#else
|
||||
#define ld9040_suspend NULL
|
||||
#define ld9040_resume NULL
|
||||
#endif
|
||||
|
||||
/* Power down all displays on reboot, poweroff or halt. */
|
||||
static void ld9040_shutdown(struct spi_device *spi)
|
||||
{
|
||||
struct ld9040 *lcd = dev_get_drvdata(&spi->dev);
|
||||
|
||||
ld9040_power(lcd, FB_BLANK_POWERDOWN);
|
||||
}
|
||||
|
||||
static struct spi_driver ld9040_driver = {
|
||||
.driver = {
|
||||
.name = "ld9040",
|
||||
.bus = &spi_bus_type,
|
||||
.owner = THIS_MODULE,
|
||||
},
|
||||
.probe = ld9040_probe,
|
||||
.remove = __devexit_p(ld9040_remove),
|
||||
.shutdown = ld9040_shutdown,
|
||||
.suspend = ld9040_suspend,
|
||||
.resume = ld9040_resume,
|
||||
};
|
||||
|
||||
static int __init ld9040_init(void)
|
||||
{
|
||||
return spi_register_driver(&ld9040_driver);
|
||||
}
|
||||
|
||||
static void __exit ld9040_exit(void)
|
||||
{
|
||||
spi_unregister_driver(&ld9040_driver);
|
||||
}
|
||||
|
||||
module_init(ld9040_init);
|
||||
module_exit(ld9040_exit);
|
||||
|
||||
MODULE_AUTHOR("Donghwa Lee <dh09.lee@samsung.com>");
|
||||
MODULE_DESCRIPTION("ld9040 LCD Driver");
|
||||
MODULE_LICENSE("GPL");
|
||||
|
|
@ -0,0 +1,200 @@
|
|||
/*
|
||||
* Gamma level definitions.
|
||||
*
|
||||
* Copyright (c) 2011 Samsung Electronics
|
||||
* InKi Dae <inki.dae@samsung.com>
|
||||
* Donghwa Lee <dh09.lee@samsung.com>
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License version 2 as
|
||||
* published by the Free Software Foundation.
|
||||
*/
|
||||
|
||||
#ifndef _LD9040_BRIGHTNESS_H
|
||||
#define _LD9040_BRIGHTNESS_H
|
||||
|
||||
#define MAX_GAMMA_LEVEL 25
|
||||
#define GAMMA_TABLE_COUNT 21
|
||||
|
||||
/* gamma value: 2.2 */
|
||||
static const unsigned int ld9040_22_300[] = {
|
||||
0x00, 0xa7, 0xb4, 0xae, 0xbf, 0x00, 0x91,
|
||||
0x00, 0xb2, 0xb4, 0xaa, 0xbb, 0x00, 0xac,
|
||||
0x00, 0xb3, 0xb1, 0xaa, 0xbc, 0x00, 0xb3
|
||||
};
|
||||
|
||||
static const unsigned int ld9040_22_290[] = {
|
||||
0x00, 0xa9, 0xb7, 0xae, 0xbd, 0x00, 0x89,
|
||||
0x00, 0xb7, 0xb6, 0xa8, 0xba, 0x00, 0xa4,
|
||||
0x00, 0xb1, 0xb4, 0xaa, 0xbb, 0x00, 0xaa
|
||||
};
|
||||
|
||||
static const unsigned int ld9040_22_280[] = {
|
||||
0x00, 0xa9, 0xb6, 0xad, 0xbf, 0x00, 0x86,
|
||||
0x00, 0xb8, 0xb5, 0xa8, 0xbc, 0x00, 0xa0,
|
||||
0x00, 0xb3, 0xb3, 0xa9, 0xbc, 0x00, 0xa7
|
||||
};
|
||||
|
||||
static const unsigned int ld9040_22_270[] = {
|
||||
0x00, 0xa8, 0xb8, 0xae, 0xbe, 0x00, 0x84,
|
||||
0x00, 0xb9, 0xb7, 0xa8, 0xbc, 0x00, 0x9d,
|
||||
0x00, 0xb2, 0xb5, 0xaa, 0xbc, 0x00, 0xa4
|
||||
|
||||
};
|
||||
static const unsigned int ld9040_22_260[] = {
|
||||
0x00, 0xa4, 0xb8, 0xb0, 0xbf, 0x00, 0x80,
|
||||
0x00, 0xb8, 0xb6, 0xaa, 0xbc, 0x00, 0x9a,
|
||||
0x00, 0xb0, 0xb5, 0xab, 0xbd, 0x00, 0xa0
|
||||
};
|
||||
|
||||
static const unsigned int ld9040_22_250[] = {
|
||||
0x00, 0xa4, 0xb9, 0xaf, 0xc1, 0x00, 0x7d,
|
||||
0x00, 0xb9, 0xb6, 0xaa, 0xbb, 0x00, 0x97,
|
||||
0x00, 0xb1, 0xb5, 0xaa, 0xbf, 0x00, 0x9d
|
||||
};
|
||||
|
||||
static const unsigned int ld9040_22_240[] = {
|
||||
0x00, 0xa2, 0xb9, 0xaf, 0xc2, 0x00, 0x7a,
|
||||
0x00, 0xb9, 0xb7, 0xaa, 0xbd, 0x00, 0x94,
|
||||
0x00, 0xb0, 0xb5, 0xab, 0xbf, 0x00, 0x9a
|
||||
};
|
||||
|
||||
static const unsigned int ld9040_22_230[] = {
|
||||
0x00, 0xa0, 0xb9, 0xaf, 0xc3, 0x00, 0x77,
|
||||
0x00, 0xb9, 0xb7, 0xab, 0xbe, 0x00, 0x90,
|
||||
0x00, 0xb0, 0xb6, 0xab, 0xbf, 0x00, 0x97
|
||||
};
|
||||
|
||||
static const unsigned int ld9040_22_220[] = {
|
||||
0x00, 0x9e, 0xba, 0xb0, 0xc2, 0x00, 0x75,
|
||||
0x00, 0xb9, 0xb8, 0xab, 0xbe, 0x00, 0x8e,
|
||||
0x00, 0xb0, 0xb6, 0xac, 0xbf, 0x00, 0x94
|
||||
};
|
||||
|
||||
static const unsigned int ld9040_22_210[] = {
|
||||
0x00, 0x9c, 0xb9, 0xb0, 0xc4, 0x00, 0x72,
|
||||
0x00, 0xb8, 0xb8, 0xac, 0xbf, 0x00, 0x8a,
|
||||
0x00, 0xb0, 0xb6, 0xac, 0xc0, 0x00, 0x91
|
||||
};
|
||||
|
||||
static const unsigned int ld9040_22_200[] = {
|
||||
0x00, 0x9a, 0xba, 0xb1, 0xc4, 0x00, 0x6f,
|
||||
0x00, 0xb8, 0xb8, 0xad, 0xc0, 0x00, 0x86,
|
||||
0x00, 0xb0, 0xb7, 0xad, 0xc0, 0x00, 0x8d
|
||||
};
|
||||
|
||||
static const unsigned int ld9040_22_190[] = {
|
||||
0x00, 0x97, 0xba, 0xb2, 0xc5, 0x00, 0x6c,
|
||||
0x00, 0xb8, 0xb8, 0xae, 0xc1, 0x00, 0x82,
|
||||
0x00, 0xb0, 0xb6, 0xae, 0xc2, 0x00, 0x89
|
||||
};
|
||||
|
||||
static const unsigned int ld9040_22_180[] = {
|
||||
0x00, 0x93, 0xba, 0xb3, 0xc5, 0x00, 0x69,
|
||||
0x00, 0xb8, 0xb9, 0xae, 0xc1, 0x00, 0x7f,
|
||||
0x00, 0xb0, 0xb6, 0xae, 0xc3, 0x00, 0x85
|
||||
};
|
||||
|
||||
static const unsigned int ld9040_22_170[] = {
|
||||
0x00, 0x8b, 0xb9, 0xb3, 0xc7, 0x00, 0x65,
|
||||
0x00, 0xb7, 0xb8, 0xaf, 0xc3, 0x00, 0x7a,
|
||||
0x00, 0x80, 0xb6, 0xae, 0xc4, 0x00, 0x81
|
||||
};
|
||||
|
||||
static const unsigned int ld9040_22_160[] = {
|
||||
0x00, 0x89, 0xba, 0xb3, 0xc8, 0x00, 0x62,
|
||||
0x00, 0xb6, 0xba, 0xaf, 0xc3, 0x00, 0x76,
|
||||
0x00, 0xaf, 0xb7, 0xae, 0xc4, 0x00, 0x7e
|
||||
};
|
||||
|
||||
static const unsigned int ld9040_22_150[] = {
|
||||
0x00, 0x82, 0xba, 0xb4, 0xc7, 0x00, 0x5f,
|
||||
0x00, 0xb5, 0xba, 0xb0, 0xc3, 0x00, 0x72,
|
||||
0x00, 0xae, 0xb8, 0xb0, 0xc3, 0x00, 0x7a
|
||||
};
|
||||
|
||||
static const unsigned int ld9040_22_140[] = {
|
||||
0x00, 0x7b, 0xbb, 0xb4, 0xc8, 0x00, 0x5b,
|
||||
0x00, 0xb5, 0xba, 0xb1, 0xc4, 0x00, 0x6e,
|
||||
0x00, 0xae, 0xb9, 0xb0, 0xc5, 0x00, 0x75
|
||||
};
|
||||
|
||||
static const unsigned int ld9040_22_130[] = {
|
||||
0x00, 0x71, 0xbb, 0xb5, 0xc8, 0x00, 0x57,
|
||||
0x00, 0xb5, 0xbb, 0xb0, 0xc5, 0x00, 0x6a,
|
||||
0x00, 0xae, 0xb9, 0xb1, 0xc6, 0x00, 0x70
|
||||
};
|
||||
|
||||
static const unsigned int ld9040_22_120[] = {
|
||||
0x00, 0x47, 0xba, 0xb6, 0xca, 0x00, 0x53,
|
||||
0x00, 0xb5, 0xbb, 0xb3, 0xc6, 0x00, 0x65,
|
||||
0x00, 0xae, 0xb8, 0xb3, 0xc7, 0x00, 0x6c
|
||||
};
|
||||
|
||||
static const unsigned int ld9040_22_110[] = {
|
||||
0x00, 0x13, 0xbb, 0xb7, 0xca, 0x00, 0x4f,
|
||||
0x00, 0xb4, 0xbb, 0xb3, 0xc7, 0x00, 0x60,
|
||||
0x00, 0xad, 0xb8, 0xb4, 0xc7, 0x00, 0x67
|
||||
};
|
||||
|
||||
static const unsigned int ld9040_22_100[] = {
|
||||
0x00, 0x13, 0xba, 0xb8, 0xcb, 0x00, 0x4b,
|
||||
0x00, 0xb3, 0xbc, 0xb4, 0xc7, 0x00, 0x5c,
|
||||
0x00, 0xac, 0xb8, 0xb4, 0xc8, 0x00, 0x62
|
||||
};
|
||||
|
||||
static const unsigned int ld9040_22_90[] = {
|
||||
0x00, 0x13, 0xb9, 0xb8, 0xcd, 0x00, 0x46,
|
||||
0x00, 0xb1, 0xbc, 0xb5, 0xc8, 0x00, 0x56,
|
||||
0x00, 0xaa, 0xb8, 0xb4, 0xc9, 0x00, 0x5d
|
||||
};
|
||||
|
||||
static const unsigned int ld9040_22_80[] = {
|
||||
0x00, 0x13, 0xba, 0xb9, 0xcd, 0x00, 0x41,
|
||||
0x00, 0xb0, 0xbe, 0xb5, 0xc9, 0x00, 0x51,
|
||||
0x00, 0xa9, 0xb9, 0xb5, 0xca, 0x00, 0x57
|
||||
};
|
||||
|
||||
static const unsigned int ld9040_22_70[] = {
|
||||
0x00, 0x13, 0xb9, 0xb9, 0xd0, 0x00, 0x3c,
|
||||
0x00, 0xaf, 0xbf, 0xb6, 0xcb, 0x00, 0x4b,
|
||||
0x00, 0xa8, 0xb9, 0xb5, 0xcc, 0x00, 0x52
|
||||
};
|
||||
|
||||
static const unsigned int ld9040_22_50[] = {
|
||||
0x00, 0x13, 0xb2, 0xba, 0xd2, 0x00, 0x30,
|
||||
0x00, 0xaf, 0xc0, 0xb8, 0xcd, 0x00, 0x3d,
|
||||
0x00, 0xa8, 0xb8, 0xb7, 0xcd, 0x00, 0x44
|
||||
};
|
||||
|
||||
struct ld9040_gamma {
|
||||
unsigned int *gamma_22_table[MAX_GAMMA_LEVEL];
|
||||
} gamma_table = {
|
||||
.gamma_22_table[0] = (unsigned int *)&ld9040_22_50,
|
||||
.gamma_22_table[1] = (unsigned int *)&ld9040_22_70,
|
||||
.gamma_22_table[2] = (unsigned int *)&ld9040_22_80,
|
||||
.gamma_22_table[3] = (unsigned int *)&ld9040_22_90,
|
||||
.gamma_22_table[4] = (unsigned int *)&ld9040_22_100,
|
||||
.gamma_22_table[5] = (unsigned int *)&ld9040_22_110,
|
||||
.gamma_22_table[6] = (unsigned int *)&ld9040_22_120,
|
||||
.gamma_22_table[7] = (unsigned int *)&ld9040_22_130,
|
||||
.gamma_22_table[8] = (unsigned int *)&ld9040_22_140,
|
||||
.gamma_22_table[9] = (unsigned int *)&ld9040_22_150,
|
||||
.gamma_22_table[10] = (unsigned int *)&ld9040_22_160,
|
||||
.gamma_22_table[11] = (unsigned int *)&ld9040_22_170,
|
||||
.gamma_22_table[12] = (unsigned int *)&ld9040_22_180,
|
||||
.gamma_22_table[13] = (unsigned int *)&ld9040_22_190,
|
||||
.gamma_22_table[14] = (unsigned int *)&ld9040_22_200,
|
||||
.gamma_22_table[15] = (unsigned int *)&ld9040_22_210,
|
||||
.gamma_22_table[16] = (unsigned int *)&ld9040_22_220,
|
||||
.gamma_22_table[17] = (unsigned int *)&ld9040_22_230,
|
||||
.gamma_22_table[18] = (unsigned int *)&ld9040_22_240,
|
||||
.gamma_22_table[19] = (unsigned int *)&ld9040_22_250,
|
||||
.gamma_22_table[20] = (unsigned int *)&ld9040_22_260,
|
||||
.gamma_22_table[21] = (unsigned int *)&ld9040_22_270,
|
||||
.gamma_22_table[22] = (unsigned int *)&ld9040_22_280,
|
||||
.gamma_22_table[23] = (unsigned int *)&ld9040_22_290,
|
||||
.gamma_22_table[24] = (unsigned int *)&ld9040_22_300,
|
||||
};
|
||||
|
||||
#endif
|
||||
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