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/* linux/arch/arm/mach-s5pv210/setup-fb.c
*
* Copyright (c) 2009 Samsung Electronics Co., Ltd.
* http://www.samsung.com/
*
* Base FIMD controller configuration
*
* 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/clk.h>
#include <linux/delay.h>
#include <linux/err.h>
#include <linux/gpio.h>
#include <linux/kernel.h>
#include <linux/platform_device.h>
#include <linux/types.h>
#include <plat/clock.h>
#include <plat/gpio-cfg.h>
#include <plat/fb.h>
#include <mach/regs-clock.h>
#include <mach/regs-gpio.h>
#include <linux/io.h>
#include <mach/map.h>
struct platform_device; /* don't need the contents */
void s3cfb_cfg_gpio(struct platform_device *pdev)
{
int i;
for (i = 0; i < 8; i++) {
s3c_gpio_cfgpin(S5PV210_GPF0(i), S3C_GPIO_SFN(2));
s3c_gpio_setpull(S5PV210_GPF0(i), S3C_GPIO_PULL_NONE);
}
for (i = 0; i < 8; i++) {
s3c_gpio_cfgpin(S5PV210_GPF1(i), S3C_GPIO_SFN(2));
s3c_gpio_setpull(S5PV210_GPF1(i), S3C_GPIO_PULL_NONE);
}
for (i = 0; i < 8; i++) {
s3c_gpio_cfgpin(S5PV210_GPF2(i), S3C_GPIO_SFN(2));
s3c_gpio_setpull(S5PV210_GPF2(i), S3C_GPIO_PULL_NONE);
}
for (i = 0; i < 4; i++) {
s3c_gpio_cfgpin(S5PV210_GPF3(i), S3C_GPIO_SFN(2));
s3c_gpio_setpull(S5PV210_GPF3(i), S3C_GPIO_PULL_NONE);
}
/* mDNIe SEL: why we shall write 0x2 ? */
writel(0x2, S5P_MDNIE_SEL);
/* drive strength to max */
writel(0xffffffff, S5PV210_GPF0_BASE + 0xc);
writel(0xffffffff, S5PV210_GPF1_BASE + 0xc);
writel(0xffffffff, S5PV210_GPF2_BASE + 0xc);
writel(0x000000ff, S5PV210_GPF3_BASE + 0xc);
}
int s3cfb_clk_on(struct platform_device *pdev, struct clk **s3cfb_clk)
{
struct clk *sclk = NULL;
struct clk *mout_mpll = NULL;
u32 rate = 0;
sclk = clk_get(&pdev->dev, "sclk_fimd");
if (IS_ERR(sclk)) {
dev_err(&pdev->dev, "failed to get sclk for fimd\n");
goto err_clk1;
}
mout_mpll = clk_get(&pdev->dev, "mout_mpll");
if (IS_ERR(mout_mpll)) {
dev_err(&pdev->dev, "failed to get mout_mpll\n");
goto err_clk2;
}
clk_set_parent(sclk, mout_mpll);
if (!rate)
rate = 166750000;
clk_set_rate(sclk, rate);
dev_dbg(&pdev->dev, "set fimd sclk rate to %d\n", rate);
clk_put(mout_mpll);
clk_enable(sclk);
*s3cfb_clk = sclk;
return 0;
err_clk2:
clk_put(sclk);
err_clk1:
return -EINVAL;
}
int s3cfb_clk_off(struct platform_device *pdev, struct clk **clk)
{
clk_disable(*clk);
clk_put(*clk);
*clk = NULL;
return 0;
}
void s3cfb_get_clk_name(char *clk_name)
{
strcpy(clk_name, "sclk_fimd");
}
#ifdef CONFIG_FB_S3C_LTE480WV
int s3cfb_backlight_onoff(struct platform_device *pdev, int onoff)
{
int err;
err = gpio_request(S5PV210_GPD0(3), "GPD0");
if (err) {
printk(KERN_ERR "failed to request GPD0 for "
"lcd backlight control\n");
return err;
}
if (onoff) {
gpio_direction_output(S5PV210_GPD0(3), 1);
/* 2009.12.28 by icarus : added for PWM backlight */
s3c_gpio_cfgpin(S5PV210_GPD0(3), S5PV210_GPD_0_3_TOUT_3);
} else {
gpio_direction_output(S5PV210_GPD0(3), 0);
}
gpio_free(S5PV210_GPD0(3));
return 0;
}
int s3cfb_reset_lcd(struct platform_device *pdev)
{
int err;
err = gpio_request(S5PV210_GPH0(6), "GPH0");
if (err) {
printk(KERN_ERR "failed to request GPH0 for "
"lcd reset control\n");
return err;
}
gpio_direction_output(S5PV210_GPH0(6), 1);
mdelay(100);
gpio_set_value(S5PV210_GPH0(6), 0);
mdelay(10);
gpio_set_value(S5PV210_GPH0(6), 1);
mdelay(10);
gpio_free(S5PV210_GPH0(6));
return 0;
}
#elif defined(CONFIG_FB_S3C_HT101HD1)
int s3cfb_backlight_on(struct platform_device *pdev)
{
int err;
err = gpio_request(S5PV210_GPB(2), "GPB");
if (err) {
printk(KERN_ERR "failed to request GPB for "
"lcd backlight control\n");
return err;
}
#ifdef CONFIG_TYPE_PROTO3
err = gpio_request(S5PV210_GPD0(1), "GPD0");
if (err) {
printk(KERN_ERR "failed to request GPD0 for "
"lcd backlight control\n");
return err;
}
#endif
gpio_direction_output(S5PV210_GPB(2), 1); /* LED_EN (SPI1_MOSI) */
#ifdef CONFIG_TYPE_PROTO3
/* LCD_PWR_EN is only for Proto3 */
gpio_direction_output(S5PV210_GPD0(1), 1);
mdelay(10);
#endif
gpio_free(S5PV210_GPB(2));
#ifdef CONFIG_TYPE_PROTO3
gpio_free(S5PV210_GPD0(1));
#endif
return 0;
}
int s3cfb_reset_lcd(struct platform_device *pdev)
{
int err;
err = gpio_request(S5PV210_GPH0(1), "GPH0");
if (err) {
printk(KERN_ERR "failed to request GPH0 for "
"lcd reset control\n");
return err;
}
gpio_direction_output(S5PV210_GPH0(1), 1);
gpio_set_value(S5PV210_GPH0(1), 0);
gpio_set_value(S5PV210_GPH0(1), 1);
gpio_free(S5PV210_GPH0(1));
return 0;
}
#endif
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