blob: 3b8528ef96d07a232be6e0199a0b3906247cccd4 [file] [log] [blame] [edit]
/*
* drivers/display/lcd/lcd_bl_ldim/ob3350_bl.c
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the named License,
* or any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#include <common.h>
#include <malloc.h>
#include <asm/arch/gpio.h>
#ifdef CONFIG_OF_LIBFDT
#include <libfdt.h>
#endif
#include <amlogic/aml_lcd.h>
#include <amlogic/aml_ldim.h>
#include "../aml_lcd_reg.h"
#include "../aml_lcd_common.h"
#include "ldim_drv.h"
#include "ldim_dev_drv.h"
static int ob3350_on_flag;
static int ob3350_hw_init_on(void)
{
struct aml_ldim_driver_s *ldim_drv = aml_ldim_get_driver();
ldim_set_gpio(ldim_drv->ldev_conf->en_gpio, ldim_drv->ldev_conf->en_gpio_on);
mdelay(2);
ldim_drv->pinmux_ctrl(1);
mdelay(20);
return 0;
}
static int ob3350_hw_init_off(void)
{
struct aml_ldim_driver_s *ldim_drv = aml_ldim_get_driver();
ldim_drv->pinmux_ctrl(0);
ldim_set_gpio(ldim_drv->ldev_conf->en_gpio, ldim_drv->ldev_conf->en_gpio_off);
return 0;
}
static unsigned int ob3350_get_value(unsigned int level)
{
struct aml_ldim_driver_s *ldim_drv = aml_ldim_get_driver();
unsigned int val;
unsigned int dim_max, dim_min;
dim_max = ldim_drv->ldev_conf->dim_max;
dim_min = ldim_drv->ldev_conf->dim_min;
val = dim_min + ((level * (dim_max - dim_min)) / LD_DATA_MAX);
return val;
}
static int ob3350_smr(unsigned short *buf, unsigned char len)
{
struct aml_ldim_driver_s *ldim_drv = aml_ldim_get_driver();
unsigned short val;
val = ob3350_get_value(buf[0]);
ldim_drv->ldev_conf->pwm_config.pwm_duty = val;
if (ob3350_on_flag == 0) {
if (lcd_debug_print_flag)
LDIMPR("%s: on_flag=%d\n", __func__, ob3350_on_flag);
return 0;
}
if (len != 1) {
LDIMERR("%s: data len %d invalid\n", __func__, len);
return -1;
}
ldim_set_duty_pwm(&(ldim_drv->ldev_conf->pwm_config));
return 0;
}
static int ob3350_power_on(void)
{
struct aml_ldim_driver_s *ldim_drv = aml_ldim_get_driver();
ob3350_hw_init_on();
ob3350_on_flag = 1;
/* init brightness level */
ldim_set_duty_pwm(&(ldim_drv->ldev_conf->pwm_config));
LDIMPR("%s: ok\n", __func__);
return 0;
}
static int ob3350_power_off(void)
{
ob3350_on_flag = 0;
ob3350_hw_init_off();
LDIMPR("%s: ok\n", __func__);
return 0;
}
static int ob3350_ldim_driver_update(void)
{
struct aml_ldim_driver_s *ldim_drv = aml_ldim_get_driver();
ldim_drv->device_power_on = ob3350_power_on;
ldim_drv->device_power_off = ob3350_power_off;
ldim_drv->device_bri_update = ob3350_smr;
return 0;
}
int ldim_dev_ob3350_probe(void)
{
ob3350_on_flag = 0;
ob3350_ldim_driver_update();
return 0;
}
int ldim_dev_ob3350_remove(void)
{
return 0;
}