/* linux/drivers/video/exynos/s6e8ax0.c * * MIPI-DSI based s6e8ax0 AMOLED lcd 4.65 inch panel driver. * * 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. */ #include <linux/module.h> #include <linux/kernel.h> #include <linux/errno.h> #include <linux/mutex.h> #include <linux/wait.h> #include <linux/ctype.h> #include <linux/io.h> #include <linux/delay.h> #include <linux/irq.h> #include <linux/interrupt.h> #include <linux/lcd.h> #include <linux/fb.h> #include <linux/backlight.h> #include <linux/regulator/consumer.h> #include <video/mipi_display.h> #include <video/exynos_mipi_dsim.h> #define LDI_MTP_LENGTH 24 #define DSIM_PM_STABLE_TIME 10 #define MIN_BRIGHTNESS 0 #define MAX_BRIGHTNESS 24 #define GAMMA_TABLE_COUNT 26 #define POWER_IS_ON(pwr) ((pwr) == FB_BLANK_UNBLANK) #define POWER_IS_OFF(pwr) ((pwr) == FB_BLANK_POWERDOWN) #define POWER_IS_NRM(pwr) ((pwr) == FB_BLANK_NORMAL) #define lcd_to_master(a) (a->dsim_dev->master) #define lcd_to_master_ops(a) ((lcd_to_master(a))->master_ops) enum { DSIM_NONE_STATE = 0, DSIM_RESUME_COMPLETE = 1, DSIM_FRAME_DONE = 2, }; struct s6e8ax0 { struct device *dev; unsigned int power; unsigned int id; unsigned int gamma; unsigned int acl_enable; unsigned int cur_acl; struct lcd_device *ld; struct backlight_device *bd; struct mipi_dsim_lcd_device *dsim_dev; struct lcd_platform_data *ddi_pd; struct mutex lock; bool enabled; }; static struct regulator_bulk_data supplies[] = { { .supply = "vdd3", }, { .supply = "vci", }, }; static void s6e8ax0_regulator_enable(struct s6e8ax0 *lcd) { int ret = 0; struct lcd_platform_data *pd = NULL; pd = lcd->ddi_pd; mutex_lock(&lcd->lock); if (!lcd->enabled) { ret = regulator_bulk_enable(ARRAY_SIZE(supplies), supplies); if (ret) goto out; lcd->enabled = true; } msleep(pd->power_on_delay); out: mutex_unlock(&lcd->lock); } static void s6e8ax0_regulator_disable(struct s6e8ax0 *lcd) { int ret = 0; mutex_lock(&lcd->lock); if (lcd->enabled) { ret = regulator_bulk_disable(ARRAY_SIZE(supplies), supplies); if (ret) goto out; lcd->enabled = false; } out: mutex_unlock(&lcd->lock); } static const unsigned char s6e8ax0_22_gamma_30[] = { 0xfa, 0x01, 0x60, 0x10, 0x60, 0xf5, 0x00, 0xff, 0xad, 0xaf, 0xbA, 0xc3, 0xd8, 0xc5, 0x9f, 0xc6, 0x9e, 0xc1, 0xdc, 0xc0, 0x00, 0x61, 0x00, 0x5a, 0x00, 0x74, }; static const unsigned char s6e8ax0_22_gamma_50[] = { 0xfa, 0x01, 0x60, 0x10, 0x60, 0xe8, 0x1f, 0xf7, 0xad, 0xc0, 0xb5, 0xc4, 0xdc, 0xc4, 0x9e, 0xc6, 0x9c, 0xbb, 0xd8, 0xbb, 0x00, 0x70, 0x00, 0x68, 0x00, 0x86, }; static const unsigned char s6e8ax0_22_gamma_60[] = { 0xfa, 0x01, 0x60, 0x10, 0x60, 0xde, 0x1f, 0xef, 0xad, 0xc4, 0xb3, 0xc3, 0xdd, 0xc4, 0x9e, 0xc6, 0x9c, 0xbc, 0xd6, 0xba, 0x00, 0x75, 0x00, 0x6e, 0x00, 0x8d, }; static const unsigned char s6e8ax0_22_gamma_70[] = { 0xfa, 0x01, 0x60, 0x10, 0x60, 0xd8, 0x1f, 0xe7, 0xaf, 0xc8, 0xb4, 0xc4, 0xdd, 0xc3, 0x9d, 0xc6, 0x9c, 0xbb, 0xd6, 0xb9, 0x00, 0x7a, 0x00, 0x72, 0x00, 0x93, }; static const unsigned char s6e8ax0_22_gamma_80[] = { 0xfa, 0x01, 0x60, 0x10, 0x60, 0xc9, 0x1f, 0xde, 0xae, 0xc9, 0xb1, 0xc3, 0xdd, 0xc2, 0x9d, 0xc5, 0x9b, 0xbc, 0xd6, 0xbb, 0x00, 0x7f, 0x00, 0x77, 0x00, 0x99, }; static const unsigned char s6e8ax0_22_gamma_90[] = { 0xfa, 0x01, 0x60, 0x10, 0x60, 0xc7, 0x1f, 0xd9, 0xb0, 0xcc, 0xb2, 0xc3, 0xdc, 0xc1, 0x9c, 0xc6, 0x9c, 0xbc, 0xd4, 0xb9, 0x00, 0x83, 0x00, 0x7b, 0x00, 0x9e, }; static const unsigned char s6e8ax0_22_gamma_100[] = { 0xfa, 0x01, 0x60, 0x10, 0x60, 0xbd, 0x80, 0xcd, 0xba, 0xce, 0xb3, 0xc4, 0xde, 0xc3, 0x9c, 0xc4, 0x9, 0xb8, 0xd3, 0xb6, 0x00, 0x88, 0x00, 0x80, 0x00, 0xa5, }; static const unsigned char s6e8ax0_22_gamma_120[] = { 0xfa, 0x01, 0x60, 0x10, 0x60, 0xb9, 0x95, 0xc8, 0xb1, 0xcf, 0xb2, 0xc6, 0xdf, 0xc5, 0x9b, 0xc3, 0x99, 0xb6, 0xd2, 0xb6, 0x00, 0x8f, 0x00, 0x86, 0x00, 0xac, }; static const unsigned char s6e8ax0_22_gamma_130[] = { 0xfa, 0x01, 0x60, 0x10, 0x60, 0xb7, 0xa0, 0xc7, 0xb1, 0xd0, 0xb2, 0xc4, 0xdd, 0xc3, 0x9a, 0xc3, 0x98, 0xb6, 0xd0, 0xb4, 0x00, 0x92, 0x00, 0x8a, 0x00, 0xb1, }; static const unsigned char s6e8ax0_22_gamma_140[] = { 0xfa, 0x01, 0x60, 0x10, 0x60, 0xb7, 0xa0, 0xc5, 0xb2, 0xd0, 0xb3, 0xc3, 0xde, 0xc3, 0x9b, 0xc2, 0x98, 0xb6, 0xd0, 0xb4, 0x00, 0x95, 0x00, 0x8d, 0x00, 0xb5, }; static const unsigned char s6e8ax0_22_gamma_150[] = { 0xfa, 0x01, 0x60, 0x10, 0x60, 0xb3, 0xa0, 0xc2, 0xb2, 0xd0, 0xb2, 0xc1, 0xdd, 0xc2, 0x9b, 0xc2, 0x98, 0xb4, 0xcf, 0xb1, 0x00, 0x99, 0x00, 0x90, 0x00, 0xba, }; static const unsigned char s6e8ax0_22_gamma_160[] = { 0xfa, 0x01, 0x60, 0x10, 0x60, 0xaf, 0xa5, 0xbf, 0xb0, 0xd0, 0xb1, 0xc3, 0xde, 0xc2, 0x99, 0xc1, 0x97, 0xb4, 0xce, 0xb1, 0x00, 0x9c, 0x00, 0x93, 0x00, 0xbe, }; static const unsigned char s6e8ax0_22_gamma_170[] = { 0xfa, 0x01, 0x60, 0x10, 0x60, 0xaf, 0xb5, 0xbf, 0xb1, 0xd1, 0xb1, 0xc3, 0xde, 0xc3, 0x99, 0xc0, 0x96, 0xb4, 0xce, 0xb1, 0x00, 0x9f, 0x00, 0x96, 0x00, 0xc2, }; static const unsigned char s6e8ax0_22_gamma_180[] = { 0xfa, 0x01, 0x60, 0x10, 0x60, 0xaf, 0xb7, 0xbe, 0xb3, 0xd2, 0xb3, 0xc3, 0xde, 0xc2, 0x97, 0xbf, 0x95, 0xb4, 0xcd, 0xb1, 0x00, 0xa2, 0x00, 0x99, 0x00, 0xc5, }; static const unsigned char s6e8ax0_22_gamma_190[] = { 0xfa, 0x01, 0x60, 0x10, 0x60, 0xaf, 0xb9, 0xbe, 0xb2, 0xd2, 0xb2, 0xc3, 0xdd, 0xc3, 0x98, 0xbf, 0x95, 0xb2, 0xcc, 0xaf, 0x00, 0xa5, 0x00, 0x9c, 0x00, 0xc9, }; static const unsigned char s6e8ax0_22_gamma_200[] = { 0xfa, 0x01, 0x60, 0x10, 0x60, 0xaf, 0xb9, 0xbc, 0xb2, 0xd2, 0xb1, 0xc4, 0xdd, 0xc3, 0x97, 0xbe, 0x95, 0xb1, 0xcb, 0xae, 0x00, 0xa8, 0x00, 0x9f, 0x00, 0xcd, }; static const unsigned char s6e8ax0_22_gamma_210[] = { 0xfa, 0x01, 0x60, 0x10, 0x60, 0xb1, 0xc1, 0xbd, 0xb1, 0xd1, 0xb1, 0xc2, 0xde, 0xc2, 0x97, 0xbe, 0x94, 0xB0, 0xc9, 0xad, 0x00, 0xae, 0x00, 0xa4, 0x00, 0xd4, }; static const unsigned char s6e8ax0_22_gamma_220[] = { 0xfa, 0x01, 0x60, 0x10, 0x60, 0xb1, 0xc7, 0xbd, 0xb1, 0xd1, 0xb1, 0xc2, 0xdd, 0xc2, 0x97, 0xbd, 0x94, 0xb0, 0xc9, 0xad, 0x00, 0xad, 0x00, 0xa2, 0x00, 0xd3, }; static const unsigned char s6e8ax0_22_gamma_230[] = { 0xfa, 0x01, 0x60, 0x10, 0x60, 0xb1, 0xc3, 0xbd, 0xb2, 0xd1, 0xb1, 0xc3, 0xdd, 0xc1, 0x96, 0xbd, 0x94, 0xb0, 0xc9, 0xad, 0x00, 0xb0, 0x00, 0xa7, 0x00, 0xd7, }; static const unsigned char s6e8ax0_22_gamma_240[] = { 0xfa, 0x01, 0x60, 0x10, 0x60, 0xb1, 0xcb, 0xbd, 0xb1, 0xd2, 0xb1, 0xc3, 0xdD, 0xc2, 0x95, 0xbd, 0x93, 0xaf, 0xc8, 0xab, 0x00, 0xb3, 0x00, 0xa9, 0x00, 0xdb, }; static const unsigned char s6e8ax0_22_gamma_250[] = { 0xfa, 0x01, 0x60, 0x10, 0x60, 0xb3, 0xcc, 0xbe, 0xb0, 0xd2, 0xb0, 0xc3, 0xdD, 0xc2, 0x94, 0xbc, 0x92, 0xae, 0xc8, 0xab, 0x00, 0xb6, 0x00, 0xab, 0x00, 0xde, }; static const unsigned char s6e8ax0_22_gamma_260[] = { 0xfa, 0x01, 0x60, 0x10, 0x60, 0xb3, 0xd0, 0xbe, 0xaf, 0xd1, 0xaf, 0xc2, 0xdd, 0xc1, 0x96, 0xbc, 0x93, 0xaf, 0xc8, 0xac, 0x00, 0xb7, 0x00, 0xad, 0x00, 0xe0, }; static const unsigned char s6e8ax0_22_gamma_270[] = { 0xfa, 0x01, 0x60, 0x10, 0x60, 0xb2, 0xcF, 0xbd, 0xb0, 0xd2, 0xaf, 0xc2, 0xdc, 0xc1, 0x95, 0xbd, 0x93, 0xae, 0xc6, 0xaa, 0x00, 0xba, 0x00, 0xb0, 0x00, 0xe4, }; static const unsigned char s6e8ax0_22_gamma_280[] = { 0xfa, 0x01, 0x60, 0x10, 0x60, 0xb2, 0xd0, 0xbd, 0xaf, 0xd0, 0xad, 0xc4, 0xdd, 0xc3, 0x95, 0xbd, 0x93, 0xac, 0xc5, 0xa9, 0x00, 0xbd, 0x00, 0xb2, 0x00, 0xe7, }; static const unsigned char s6e8ax0_22_gamma_300[] = { 0xfa, 0x01, 0x60, 0x10, 0x60, 0xb5, 0xd3, 0xbd, 0xb1, 0xd2, 0xb0, 0xc0, 0xdc, 0xc0, 0x94, 0xba, 0x91, 0xac, 0xc5, 0xa9, 0x00, 0xc2, 0x00, 0xb7, 0x00, 0xed, }; static const unsigned char *s6e8ax0_22_gamma_table[] = { s6e8ax0_22_gamma_30, s6e8ax0_22_gamma_50, s6e8ax0_22_gamma_60, s6e8ax0_22_gamma_70, s6e8ax0_22_gamma_80, s6e8ax0_22_gamma_90, s6e8ax0_22_gamma_100, s6e8ax0_22_gamma_120, s6e8ax0_22_gamma_130, s6e8ax0_22_gamma_140, s6e8ax0_22_gamma_150, s6e8ax0_22_gamma_160, s6e8ax0_22_gamma_170, s6e8ax0_22_gamma_180, s6e8ax0_22_gamma_190, s6e8ax0_22_gamma_200, s6e8ax0_22_gamma_210, s6e8ax0_22_gamma_220, s6e8ax0_22_gamma_230, s6e8ax0_22_gamma_240, s6e8ax0_22_gamma_250, s6e8ax0_22_gamma_260, s6e8ax0_22_gamma_270, s6e8ax0_22_gamma_280, s6e8ax0_22_gamma_300, }; static void s6e8ax0_panel_cond(struct s6e8ax0 *lcd) { struct mipi_dsim_master_ops *ops = lcd_to_master_ops(lcd); static const unsigned char data_to_send[] = { 0xf8, 0x3d, 0x35, 0x00, 0x00, 0x00, 0x93, 0x00, 0x3c, 0x7d, 0x08, 0x27, 0x7d, 0x3f, 0x00, 0x00, 0x00, 0x20, 0x04, 0x08, 0x6e, 0x00, 0x00, 0x00, 0x02, 0x08, 0x08, 0x23, 0x23, 0xc0, 0xc8, 0x08, 0x48, 0xc1, 0x00, 0xc1, 0xff, 0xff, 0xc8 }; static const unsigned char data_to_send_panel_reverse[] = { 0xf8, 0x19, 0x35, 0x00, 0x00, 0x00, 0x93, 0x00, 0x3c, 0x7d, 0x08, 0x27, 0x7d, 0x3f, 0x00, 0x00, 0x00, 0x20, 0x04, 0x08, 0x6e, 0x00, 0x00, 0x00, 0x02, 0x08, 0x08, 0x23, 0x23, 0xc0, 0xc1, 0x01, 0x41, 0xc1, 0x00, 0xc1, 0xf6, 0xf6, 0xc1 }; if (lcd->dsim_dev->panel_reverse) ops->cmd_write(lcd_to_master(lcd), MIPI_DSI_DCS_LONG_WRITE, data_to_send_panel_reverse, ARRAY_SIZE(data_to_send_panel_reverse)); else ops->cmd_write(lcd_to_master(lcd), MIPI_DSI_DCS_LONG_WRITE, data_to_send, ARRAY_SIZE(data_to_send)); } static void s6e8ax0_display_cond(struct s6e8ax0 *lcd) { struct mipi_dsim_master_ops *ops = lcd_to_master_ops(lcd); static const unsigned char data_to_send[] = { 0xf2, 0x80, 0x03, 0x0d }; ops->cmd_write(lcd_to_master(lcd), MIPI_DSI_DCS_LONG_WRITE, data_to_send, ARRAY_SIZE(data_to_send)); } /* Gamma 2.2 Setting (200cd, 7500K, 10MPCD) */ static void s6e8ax0_gamma_cond(struct s6e8ax0 *lcd) { struct mipi_dsim_master_ops *ops = lcd_to_master_ops(lcd); unsigned int gamma = lcd->bd->props.brightness; ops->cmd_write(lcd_to_master(lcd), MIPI_DSI_DCS_LONG_WRITE, s6e8ax0_22_gamma_table[gamma], GAMMA_TABLE_COUNT); } static void s6e8ax0_gamma_update(struct s6e8ax0 *lcd) { struct mipi_dsim_master_ops *ops = lcd_to_master_ops(lcd); static const unsigned char data_to_send[] = { 0xf7, 0x03 }; ops->cmd_write(lcd_to_master(lcd), MIPI_DSI_DCS_SHORT_WRITE_PARAM, data_to_send, ARRAY_SIZE(data_to_send)); } static void s6e8ax0_etc_cond1(struct s6e8ax0 *lcd) { struct mipi_dsim_master_ops *ops = lcd_to_master_ops(lcd); static const unsigned char data_to_send[] = { 0xd1, 0xfe, 0x80, 0x00, 0x01, 0x0b, 0x00, 0x00, 0x40, 0x0d, 0x00, 0x00 }; ops->cmd_write(lcd_to_master(lcd), MIPI_DSI_DCS_LONG_WRITE, data_to_send, ARRAY_SIZE(data_to_send)); } static void s6e8ax0_etc_cond2(struct s6e8ax0 *lcd) { struct mipi_dsim_master_ops *ops = lcd_to_master_ops(lcd); static const unsigned char data_to_send[] = { 0xb6, 0x0c, 0x02, 0x03, 0x32, 0xff, 0x44, 0x44, 0xc0, 0x00 }; ops->cmd_write(lcd_to_master(lcd), MIPI_DSI_DCS_LONG_WRITE, data_to_send, ARRAY_SIZE(data_to_send)); } static void s6e8ax0_etc_cond3(struct s6e8ax0 *lcd) { struct mipi_dsim_master_ops *ops = lcd_to_master_ops(lcd); static const unsigned char data_to_send[] = { 0xe1, 0x10, 0x1c, 0x17, 0x08, 0x1d }; ops->cmd_write(lcd_to_master(lcd), MIPI_DSI_DCS_LONG_WRITE, data_to_send, ARRAY_SIZE(data_to_send)); } static void s6e8ax0_etc_cond4(struct s6e8ax0 *lcd) { struct mipi_dsim_master_ops *ops = lcd_to_master_ops(lcd); static const unsigned char data_to_send[] = { 0xe2, 0xed, 0x07, 0xc3, 0x13, 0x0d, 0x03 }; ops->cmd_write(lcd_to_master(lcd), MIPI_DSI_DCS_LONG_WRITE, data_to_send, ARRAY_SIZE(data_to_send)); } static void s6e8ax0_etc_cond5(struct s6e8ax0 *lcd) { struct mipi_dsim_master_ops *ops = lcd_to_master_ops(lcd); static const unsigned char data_to_send[] = { 0xf4, 0xcf, 0x0a, 0x12, 0x10, 0x19, 0x33, 0x02 }; ops->cmd_write(lcd_to_master(lcd), MIPI_DSI_DCS_LONG_WRITE, data_to_send, ARRAY_SIZE(data_to_send)); } static void s6e8ax0_etc_cond6(struct s6e8ax0 *lcd) { struct mipi_dsim_master_ops *ops = lcd_to_master_ops(lcd); static const unsigned char data_to_send[] = { 0xe3, 0x40 }; ops->cmd_write(lcd_to_master(lcd), MIPI_DSI_DCS_SHORT_WRITE_PARAM, data_to_send, ARRAY_SIZE(data_to_send)); } static void s6e8ax0_etc_cond7(struct s6e8ax0 *lcd) { struct mipi_dsim_master_ops *ops = lcd_to_master_ops(lcd); static const unsigned char data_to_send[] = { 0xe4, 0x00, 0x00, 0x14, 0x80, 0x00, 0x00, 0x00 }; ops->cmd_write(lcd_to_master(lcd), MIPI_DSI_DCS_LONG_WRITE, data_to_send, ARRAY_SIZE(data_to_send)); } static void s6e8ax0_elvss_set(struct s6e8ax0 *lcd) { struct mipi_dsim_master_ops *ops = lcd_to_master_ops(lcd); static const unsigned char data_to_send[] = { 0xb1, 0x04, 0x00 }; ops->cmd_write(lcd_to_master(lcd), MIPI_DSI_DCS_LONG_WRITE, data_to_send, ARRAY_SIZE(data_to_send)); } static void s6e8ax0_elvss_nvm_set(struct s6e8ax0 *lcd) { struct mipi_dsim_master_ops *ops = lcd_to_master_ops(lcd); static const unsigned char data_to_send[] = { 0xd9, 0x5c, 0x20, 0x0c, 0x0f, 0x41, 0x00, 0x10, 0x11, 0x12, 0xd1, 0x00, 0x00, 0x00, 0x00, 0x80, 0xcb, 0xed, 0x64, 0xaf }; ops->cmd_write(lcd_to_master(lcd), MIPI_DSI_DCS_LONG_WRITE, data_to_send, ARRAY_SIZE(data_to_send)); } static void s6e8ax0_sleep_in(struct s6e8ax0 *lcd) { struct mipi_dsim_master_ops *ops = lcd_to_master_ops(lcd); static const unsigned char data_to_send[] = { 0x10, 0x00 }; ops->cmd_write(lcd_to_master(lcd), MIPI_DSI_DCS_SHORT_WRITE, data_to_send, ARRAY_SIZE(data_to_send)); } static void s6e8ax0_sleep_out(struct s6e8ax0 *lcd) { struct mipi_dsim_master_ops *ops = lcd_to_master_ops(lcd); static const unsigned char data_to_send[] = { 0x11, 0x00 }; ops->cmd_write(lcd_to_master(lcd), MIPI_DSI_DCS_SHORT_WRITE, data_to_send, ARRAY_SIZE(data_to_send)); } static void s6e8ax0_display_on(struct s6e8ax0 *lcd) { struct mipi_dsim_master_ops *ops = lcd_to_master_ops(lcd); static const unsigned char data_to_send[] = { 0x29, 0x00 }; ops->cmd_write(lcd_to_master(lcd), MIPI_DSI_DCS_SHORT_WRITE, data_to_send, ARRAY_SIZE(data_to_send)); } static void s6e8ax0_display_off(struct s6e8ax0 *lcd) { struct mipi_dsim_master_ops *ops = lcd_to_master_ops(lcd); static const unsigned char data_to_send[] = { 0x28, 0x00 }; ops->cmd_write(lcd_to_master(lcd), MIPI_DSI_DCS_SHORT_WRITE, data_to_send, ARRAY_SIZE(data_to_send)); } static void s6e8ax0_apply_level2_key(struct s6e8ax0 *lcd) { struct mipi_dsim_master_ops *ops = lcd_to_master_ops(lcd); static const unsigned char data_to_send[] = { 0xf0, 0x5a, 0x5a }; ops->cmd_write(lcd_to_master(lcd), MIPI_DSI_DCS_LONG_WRITE, data_to_send, ARRAY_SIZE(data_to_send)); } static void s6e8ax0_acl_on(struct s6e8ax0 *lcd) { struct mipi_dsim_master_ops *ops = lcd_to_master_ops(lcd); static const unsigned char data_to_send[] = { 0xc0, 0x01 }; ops->cmd_write(lcd_to_master(lcd), MIPI_DSI_DCS_SHORT_WRITE, data_to_send, ARRAY_SIZE(data_to_send)); } static void s6e8ax0_acl_off(struct s6e8ax0 *lcd) { struct mipi_dsim_master_ops *ops = lcd_to_master_ops(lcd); static const unsigned char data_to_send[] = { 0xc0, 0x00 }; ops->cmd_write(lcd_to_master(lcd), MIPI_DSI_DCS_SHORT_WRITE, data_to_send, ARRAY_SIZE(data_to_send)); } /* Full white 50% reducing setting */ static void s6e8ax0_acl_ctrl_set(struct s6e8ax0 *lcd) { struct mipi_dsim_master_ops *ops = lcd_to_master_ops(lcd); /* Full white 50% reducing setting */ static const unsigned char cutoff_50[] = { 0xc1, 0x47, 0x53, 0x13, 0x53, 0x00, 0x00, 0x02, 0xcf, 0x00, 0x00, 0x04, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x08, 0x0f, 0x16, 0x1d, 0x24, 0x2a, 0x31, 0x38, 0x3f, 0x46 }; /* Full white 45% reducing setting */ static const unsigned char cutoff_45[] = { 0xc1, 0x47, 0x53, 0x13, 0x53, 0x00, 0x00, 0x02, 0xcf, 0x00, 0x00, 0x04, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x07, 0x0d, 0x13, 0x19, 0x1f, 0x25, 0x2b, 0x31, 0x37, 0x3d }; /* Full white 40% reducing setting */ static const unsigned char cutoff_40[] = { 0xc1, 0x47, 0x53, 0x13, 0x53, 0x00, 0x00, 0x02, 0xcf, 0x00, 0x00, 0x04, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x06, 0x0c, 0x11, 0x16, 0x1c, 0x21, 0x26, 0x2b, 0x31, 0x36 }; if (lcd->acl_enable) { if (lcd->cur_acl == 0) { if (lcd->gamma == 0 || lcd->gamma == 1) { s6e8ax0_acl_off(lcd); dev_dbg(&lcd->ld->dev, "cur_acl=%d\n", lcd->cur_acl); } else s6e8ax0_acl_on(lcd); } switch (lcd->gamma) { case 0: /* 30cd */ s6e8ax0_acl_off(lcd); lcd->cur_acl = 0; break; case 1 ... 3: /* 50cd ~ 90cd */ ops->cmd_write(lcd_to_master(lcd), MIPI_DSI_DCS_LONG_WRITE, cutoff_40, ARRAY_SIZE(cutoff_40)); lcd->cur_acl = 40; break; case 4 ... 7: /* 120cd ~ 210cd */ ops->cmd_write(lcd_to_master(lcd), MIPI_DSI_DCS_LONG_WRITE, cutoff_45, ARRAY_SIZE(cutoff_45)); lcd->cur_acl = 45; break; case 8 ... 10: /* 220cd ~ 300cd */ ops->cmd_write(lcd_to_master(lcd), MIPI_DSI_DCS_LONG_WRITE, cutoff_50, ARRAY_SIZE(cutoff_50)); lcd->cur_acl = 50; break; default: break; } } else { s6e8ax0_acl_off(lcd); lcd->cur_acl = 0; dev_dbg(&lcd->ld->dev, "cur_acl = %d\n", lcd->cur_acl); } } static void s6e8ax0_read_id(struct s6e8ax0 *lcd, u8 *mtp_id) { unsigned int ret; unsigned int addr = 0xd1; /* MTP ID */ struct mipi_dsim_master_ops *ops = lcd_to_master_ops(lcd); ret = ops->cmd_read(lcd_to_master(lcd), MIPI_DSI_GENERIC_READ_REQUEST_1_PARAM, addr, 3, mtp_id); } static int s6e8ax0_panel_init(struct s6e8ax0 *lcd) { s6e8ax0_apply_level2_key(lcd); s6e8ax0_sleep_out(lcd); msleep(1); s6e8ax0_panel_cond(lcd); s6e8ax0_display_cond(lcd); s6e8ax0_gamma_cond(lcd); s6e8ax0_gamma_update(lcd); s6e8ax0_etc_cond1(lcd); s6e8ax0_etc_cond2(lcd); s6e8ax0_etc_cond3(lcd); s6e8ax0_etc_cond4(lcd); s6e8ax0_etc_cond5(lcd); s6e8ax0_etc_cond6(lcd); s6e8ax0_etc_cond7(lcd); s6e8ax0_elvss_nvm_set(lcd); s6e8ax0_elvss_set(lcd); s6e8ax0_acl_ctrl_set(lcd); s6e8ax0_acl_on(lcd); /* if ID3 value is not 33h, branch private elvss mode */ msleep(lcd->ddi_pd->power_on_delay); return 0; } static int s6e8ax0_update_gamma_ctrl(struct s6e8ax0 *lcd, int brightness) { struct mipi_dsim_master_ops *ops = lcd_to_master_ops(lcd); ops->cmd_write(lcd_to_master(lcd), MIPI_DSI_DCS_LONG_WRITE, s6e8ax0_22_gamma_table[brightness], ARRAY_SIZE(s6e8ax0_22_gamma_table)); /* update gamma table. */ s6e8ax0_gamma_update(lcd); lcd->gamma = brightness; return 0; } static int s6e8ax0_gamma_ctrl(struct s6e8ax0 *lcd, int gamma) { s6e8ax0_update_gamma_ctrl(lcd, gamma); return 0; } static int s6e8ax0_set_power(struct lcd_device *ld, int power) { struct s6e8ax0 *lcd = lcd_get_data(ld); struct mipi_dsim_master_ops *ops = lcd_to_master_ops(lcd); int ret = 0; 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; } if ((power == FB_BLANK_UNBLANK) && ops->set_blank_mode) { /* LCD power on */ if ((POWER_IS_ON(power) && POWER_IS_OFF(lcd->power)) || (POWER_IS_ON(power) && POWER_IS_NRM(lcd->power))) { ret = ops->set_blank_mode(lcd_to_master(lcd), power); if (!ret && lcd->power != power) lcd->power = power; } } else if ((power == FB_BLANK_POWERDOWN) && ops->set_early_blank_mode) { /* LCD power off */ if ((POWER_IS_OFF(power) && POWER_IS_ON(lcd->power)) || (POWER_IS_ON(lcd->power) && POWER_IS_NRM(power))) { ret = ops->set_early_blank_mode(lcd_to_master(lcd), power); if (!ret && lcd->power != power) lcd->power = power; } } return ret; } static int s6e8ax0_get_power(struct lcd_device *ld) { struct s6e8ax0 *lcd = lcd_get_data(ld); return lcd->power; } static int s6e8ax0_set_brightness(struct backlight_device *bd) { int ret = 0, brightness = bd->props.brightness; struct s6e8ax0 *lcd = bl_get_data(bd); if (brightness < MIN_BRIGHTNESS || brightness > bd->props.max_brightness) { dev_err(lcd->dev, "lcd brightness should be %d to %d.\n", MIN_BRIGHTNESS, MAX_BRIGHTNESS); return -EINVAL; } ret = s6e8ax0_gamma_ctrl(lcd, brightness); if (ret) { dev_err(&bd->dev, "lcd brightness setting failed.\n"); return -EIO; } return ret; } static struct lcd_ops s6e8ax0_lcd_ops = { .set_power = s6e8ax0_set_power, .get_power = s6e8ax0_get_power, }; static const struct backlight_ops s6e8ax0_backlight_ops = { .update_status = s6e8ax0_set_brightness, }; static void s6e8ax0_power_on(struct mipi_dsim_lcd_device *dsim_dev, int power) { struct s6e8ax0 *lcd = dev_get_drvdata(&dsim_dev->dev); msleep(lcd->ddi_pd->power_on_delay); /* lcd power on */ if (power) s6e8ax0_regulator_enable(lcd); else s6e8ax0_regulator_disable(lcd); msleep(lcd->ddi_pd->reset_delay); /* lcd reset */ if (lcd->ddi_pd->reset) lcd->ddi_pd->reset(lcd->ld); msleep(5); } static void s6e8ax0_set_sequence(struct mipi_dsim_lcd_device *dsim_dev) { struct s6e8ax0 *lcd = dev_get_drvdata(&dsim_dev->dev); s6e8ax0_panel_init(lcd); s6e8ax0_display_on(lcd); lcd->power = FB_BLANK_UNBLANK; } static int s6e8ax0_probe(struct mipi_dsim_lcd_device *dsim_dev) { struct s6e8ax0 *lcd; int ret; u8 mtp_id[3] = {0, }; lcd = devm_kzalloc(&dsim_dev->dev, sizeof(struct s6e8ax0), GFP_KERNEL); if (!lcd) { dev_err(&dsim_dev->dev, "failed to allocate s6e8ax0 structure.\n"); return -ENOMEM; } lcd->dsim_dev = dsim_dev; lcd->ddi_pd = (struct lcd_platform_data *)dsim_dev->platform_data; lcd->dev = &dsim_dev->dev; mutex_init(&lcd->lock); ret = devm_regulator_bulk_get(lcd->dev, ARRAY_SIZE(supplies), supplies); if (ret) { dev_err(lcd->dev, "Failed to get regulators: %d\n", ret); return ret; } lcd->ld = devm_lcd_device_register(lcd->dev, "s6e8ax0", lcd->dev, lcd, &s6e8ax0_lcd_ops); if (IS_ERR(lcd->ld)) { dev_err(lcd->dev, "failed to register lcd ops.\n"); return PTR_ERR(lcd->ld); } lcd->bd = devm_backlight_device_register(lcd->dev, "s6e8ax0-bl", lcd->dev, lcd, &s6e8ax0_backlight_ops, NULL); if (IS_ERR(lcd->bd)) { dev_err(lcd->dev, "failed to register backlight ops.\n"); return PTR_ERR(lcd->bd); } lcd->bd->props.max_brightness = MAX_BRIGHTNESS; lcd->bd->props.brightness = MAX_BRIGHTNESS; s6e8ax0_read_id(lcd, mtp_id); if (mtp_id[0] == 0x00) dev_err(lcd->dev, "read id failed\n"); dev_info(lcd->dev, "Read ID : %x, %x, %x\n", mtp_id[0], mtp_id[1], mtp_id[2]); if (mtp_id[2] == 0x33) dev_info(lcd->dev, "ID-3 is 0xff does not support dynamic elvss\n"); else dev_info(lcd->dev, "ID-3 is 0x%x support dynamic elvss\n", mtp_id[2]); lcd->acl_enable = 1; lcd->cur_acl = 0; dev_set_drvdata(&dsim_dev->dev, lcd); dev_dbg(lcd->dev, "probed s6e8ax0 panel driver.\n"); return 0; } #ifdef CONFIG_PM static int s6e8ax0_suspend(struct mipi_dsim_lcd_device *dsim_dev) { struct s6e8ax0 *lcd = dev_get_drvdata(&dsim_dev->dev); s6e8ax0_sleep_in(lcd); msleep(lcd->ddi_pd->power_off_delay); s6e8ax0_display_off(lcd); s6e8ax0_regulator_disable(lcd); return 0; } static int s6e8ax0_resume(struct mipi_dsim_lcd_device *dsim_dev) { struct s6e8ax0 *lcd = dev_get_drvdata(&dsim_dev->dev); s6e8ax0_sleep_out(lcd); msleep(lcd->ddi_pd->power_on_delay); s6e8ax0_regulator_enable(lcd); s6e8ax0_set_sequence(dsim_dev); return 0; } #else #define s6e8ax0_suspend NULL #define s6e8ax0_resume NULL #endif static struct mipi_dsim_lcd_driver s6e8ax0_dsim_ddi_driver = { .name = "s6e8ax0", .id = -1, .power_on = s6e8ax0_power_on, .set_sequence = s6e8ax0_set_sequence, .probe = s6e8ax0_probe, .suspend = s6e8ax0_suspend, .resume = s6e8ax0_resume, }; static int s6e8ax0_init(void) { exynos_mipi_dsi_register_lcd_driver(&s6e8ax0_dsim_ddi_driver); return 0; } static void s6e8ax0_exit(void) { return; } module_init(s6e8ax0_init); module_exit(s6e8ax0_exit); MODULE_AUTHOR("Donghwa Lee <dh09.lee@samsung.com>"); MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>"); MODULE_DESCRIPTION("MIPI-DSI based s6e8ax0 AMOLED LCD Panel Driver"); MODULE_LICENSE("GPL");