diff options
Diffstat (limited to 'drivers/video/backlight/s6e63m0_mipi_lcd.c')
| -rw-r--r-- | drivers/video/backlight/s6e63m0_mipi_lcd.c | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/drivers/video/backlight/s6e63m0_mipi_lcd.c b/drivers/video/backlight/s6e63m0_mipi_lcd.c new file mode 100644 index 0000000..f0b2d00 --- /dev/null +++ b/drivers/video/backlight/s6e63m0_mipi_lcd.c @@ -0,0 +1,166 @@ +/* linux/drivers/video/backlight/s6e63m0_mipi_lcd.c + * + * + * Copyright (c) 2011 Samsung Electronics + * + * 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/gpio.h> +#include <linux/workqueue.h> +#include <linux/backlight.h> +#include <linux/lcd.h> + +#include <video/mipi_display.h> + +#include <plat/gpio-cfg.h> +#include <plat/regs-dsim.h> + +#include <plat/dsim.h> +#include <plat/mipi_dsi.h> + +void init_lcd(struct mipi_dsim_device *dsim) +{ + unsigned char buf1[4] = {0xf2, 0x02, 0x03, 0x1b}; + unsigned char buf2[15] = {0xf8, 0x01, 0x27, 0x27, 0x07, 0x07, 0x54, + 0x9f, 0x63, 0x86, 0x1a, + 0x33, 0x0d, 0x00, 0x00}; + unsigned char buf3[4] = {0xf6, 0x00, 0x8c, 0x07}; + + /* password */ + unsigned char rf[3] = {0x00, 0x5a, 0x5a}; + + rf[0] = 0xf0; + s5p_mipi_dsi_wr_data(dsim, MIPI_DSI_DCS_LONG_WRITE, + (unsigned int) rf, 3); + + rf[0] = 0xf1; + s5p_mipi_dsi_wr_data(dsim, MIPI_DSI_DCS_LONG_WRITE, + (unsigned int) rf, 3); + + rf[0] = 0xfc; + s5p_mipi_dsi_wr_data(dsim, MIPI_DSI_DCS_LONG_WRITE, + (unsigned int) rf, 3); + + /* HZ (0x16 = 60Hz) */ + s5p_mipi_dsi_wr_data(dsim, MIPI_DSI_DCS_SHORT_WRITE_PARAM, + 0xfd, 0x14); + + s5p_mipi_dsi_wr_data(dsim, + MIPI_DSI_DCS_SHORT_WRITE_PARAM, 0xb0, 0x09); + s5p_mipi_dsi_wr_data(dsim, + MIPI_DSI_DCS_SHORT_WRITE_PARAM, 0xd5, 0x64); + s5p_mipi_dsi_wr_data(dsim, + MIPI_DSI_DCS_SHORT_WRITE_PARAM, 0xb0, 0x09); + + /* nonBurstSyncPulse */ + if (dsim->pd->dsim_config->e_burst_mode == DSIM_NON_BURST_SYNC_PULSE) + s5p_mipi_dsi_wr_data(dsim, + MIPI_DSI_DCS_SHORT_WRITE_PARAM, 0xd5, 0x84); + else + s5p_mipi_dsi_wr_data(dsim, + MIPI_DSI_DCS_SHORT_WRITE_PARAM, 0xd5, 0xc4); + + s5p_mipi_dsi_wr_data(dsim, + MIPI_DSI_DCS_LONG_WRITE, (unsigned int) buf1, sizeof(buf1)); + s5p_mipi_dsi_wr_data(dsim, + MIPI_DSI_DCS_LONG_WRITE, (unsigned int) buf2, sizeof(buf2)); + s5p_mipi_dsi_wr_data(dsim, + MIPI_DSI_DCS_LONG_WRITE, (unsigned int) buf3, sizeof(buf3)); + + s5p_mipi_dsi_wr_data(dsim, + MIPI_DSI_DCS_SHORT_WRITE_PARAM, 0xfa, 0x01); + /* Exit sleep */ + s5p_mipi_dsi_wr_data(dsim, MIPI_DSI_DCS_SHORT_WRITE, + 0x11, 0); + mdelay(600); + /* Set Display ON */ + s5p_mipi_dsi_wr_data(dsim, MIPI_DSI_DCS_SHORT_WRITE, + 0x29, 0); +} + +void s6e63m0_mipi_lcd_off(struct mipi_dsim_device *dsim) +{ + /* softreset */ + s5p_mipi_dsi_wr_data(dsim, MIPI_DSI_DCS_SHORT_WRITE, + 0x1, 0); + /* Enter sleep */ + s5p_mipi_dsi_wr_data(dsim, MIPI_DSI_DCS_SHORT_WRITE, + 0x10, 0); + mdelay(60); + + /* Set Display off */ + s5p_mipi_dsi_wr_data(dsim, MIPI_DSI_DCS_SHORT_WRITE, + 0x28, 0); +} + +static int s6e63m0_mipi_lcd_bl_update_status(struct backlight_device *bd) +{ + return 0; +} + +static const struct backlight_ops s6e63m0_mipi_lcd_bl_ops = { + .update_status = s6e63m0_mipi_lcd_bl_update_status, +}; + +static int s6e63m0_mipi_lcd_probe(struct mipi_dsim_device *dsim) +{ + struct mipi_dsim_device *dsim_drv; + struct backlight_device *bd = NULL; + struct backlight_properties props; + + dsim_drv = kzalloc(sizeof(struct mipi_dsim_device), GFP_KERNEL); + if (!dsim_drv) + return -ENOMEM; + + dsim_drv = (struct mipi_dsim_device *) dsim; + + props.max_brightness = 1; + props.type = BACKLIGHT_PLATFORM; + + bd = backlight_device_register("pwm-backlight", + dsim_drv->dev, dsim_drv, &s6e63m0_mipi_lcd_bl_ops, &props); + + return 0; +} + +static int s6e63m0_mipi_lcd_suspend(struct mipi_dsim_device *dsim) +{ + s6e63m0_mipi_lcd_off(dsim); + return 0; +} + +static int s6e63m0_mipi_lcd_displayon(struct mipi_dsim_device *dsim) +{ + init_lcd(dsim); + + return 0; +} + +static int s6e63m0_mipi_lcd_resume(struct mipi_dsim_device *dsim) +{ + init_lcd(dsim); + return 0; +} + +struct mipi_dsim_lcd_driver s6e63m0_mipi_lcd_driver = { + .probe = s6e63m0_mipi_lcd_probe, + .suspend = s6e63m0_mipi_lcd_suspend, + .displayon = s6e63m0_mipi_lcd_displayon, + .resume = s6e63m0_mipi_lcd_resume, +}; + |