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path: root/drivers/video/samsung_duallcd/s3cfb_s6c1372.c
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Diffstat (limited to 'drivers/video/samsung_duallcd/s3cfb_s6c1372.c')
-rw-r--r--drivers/video/samsung_duallcd/s3cfb_s6c1372.c214
1 files changed, 214 insertions, 0 deletions
diff --git a/drivers/video/samsung_duallcd/s3cfb_s6c1372.c b/drivers/video/samsung_duallcd/s3cfb_s6c1372.c
new file mode 100644
index 0000000..4d23708
--- /dev/null
+++ b/drivers/video/samsung_duallcd/s3cfb_s6c1372.c
@@ -0,0 +1,214 @@
+/* linux/drivers/video/samsung/s3cfb_s6c1372.c
+ *
+ * Copyright (c) 2011 Samsung Electronics Co., Ltd.
+ * http://www.samsung.com/
+ *
+ * S6F1202A : 7" WSVGA Landscape LCD module driver
+ * S6C1372 : 7.3" WXGA Landscape LCD module driver
+ *
+ * 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/wait.h>
+#include <linux/delay.h>
+#include <linux/gpio.h>
+#include <linux/platform_device.h>
+#include <linux/lcd.h>
+#include <plat/gpio-cfg.h>
+#include "s3cfb.h"
+
+
+struct s6c1372_lcd {
+ unsigned int power;
+ struct device *dev;
+ struct lcd_device *ld;
+ struct lcd_platform_data *lcd_pd;
+};
+
+static int lvds_lcd_set_power(struct lcd_device *ld, int power)
+{
+ struct s6c1372_lcd *lcd = lcd_get_data(ld);
+ struct lcd_platform_data *pd = NULL;
+ if (power != FB_BLANK_UNBLANK && power != FB_BLANK_POWERDOWN &&
+ power != FB_BLANK_NORMAL) {
+ dev_err(&lcd->ld->dev, "power value should be 0, 1 or 4.\n");
+ return -EINVAL;
+ }
+ pd = lcd->lcd_pd;
+ if (power)
+ pd->power_on(lcd->ld, 0);
+ else
+ pd->power_on(lcd->ld, 1);
+ lcd->power = power;
+ return 0;
+}
+static int lvds_lcd_get_power(struct lcd_device *ld)
+{
+ struct s6c1372_lcd *lcd = lcd_get_data(ld);
+
+ return lcd->power;
+}
+static struct lcd_ops s6c1372_ops = {
+ .set_power = lvds_lcd_set_power,
+ .get_power = lvds_lcd_get_power,
+};
+
+extern unsigned int lcdtype;
+
+static ssize_t lcdtype_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ char temp[15];
+#if defined(CONFIG_FB_S5P_S6F1202A)
+ /*For P2*/
+ if (lcdtype == 0)
+ sprintf(temp, "HYDIS_NT51008\n");
+ else if (lcdtype == 2)
+ sprintf(temp, "BOE_NT51008\n");
+ else
+ sprintf(temp, "SMD_S6F1202A02\n");
+#else
+ /*For p4*/
+ sprintf(temp, "SMD_S6C1372\n");
+#endif
+ strcat(buf, temp);
+ return strlen(buf);
+}
+static DEVICE_ATTR(lcd_type, 0664, lcdtype_show, NULL);
+
+void s5c1372_ldi_enable(void)
+{
+#if defined(CONFIG_FB_S5P_S6C1372)
+ gpio_set_value(GPIO_LCD_EN, GPIO_LEVEL_HIGH);
+ msleep(40);
+#else /* defined(CONFIG_FB_S5P_S6F1202A ) */
+ gpio_set_value(GPIO_LCD_EN, GPIO_LEVEL_HIGH);
+ gpio_set_value(GPIO_LCD_LDO_EN, GPIO_LEVEL_HIGH);
+ msleep(40);
+
+ /* Enable backlight PWM GPIO for P2 device. */
+ gpio_set_value(GPIO_LCD_BACKLIGHT_PWM, 0);
+ s3c_gpio_cfgpin(GPIO_LCD_BACKLIGHT_PWM, S3C_GPIO_SFN(3));
+#endif
+}
+
+void s5c1372_ldi_disable(void)
+{
+#if defined(CONFIG_FB_S5P_S6C1372)
+ s3c_gpio_cfgpin(GPIO_LCD_PCLK, S3C_GPIO_OUTPUT);
+ s3c_gpio_setpull(GPIO_LCD_PCLK, S3C_GPIO_PULL_NONE);
+ gpio_set_value(GPIO_LCD_PCLK, GPIO_LEVEL_LOW);
+
+ msleep(40);
+ gpio_set_value(GPIO_LCD_EN, GPIO_LEVEL_LOW);
+
+ msleep(600);
+#else /* defined(CONFIG_FB_S5P_S6F1202A ) */
+ /* Disable backlight PWM GPIO for P2 device. */
+ gpio_set_value(GPIO_LCD_BACKLIGHT_PWM, GPIO_LEVEL_LOW);
+ s3c_gpio_cfgpin(GPIO_LCD_BACKLIGHT_PWM, S3C_GPIO_OUTPUT);
+
+ /* Disable LVDS Panel Power, 1.2, 1.8, display 3.3V */
+ gpio_set_value(GPIO_LCD_LDO_EN, GPIO_LEVEL_LOW);
+ gpio_set_value(GPIO_LCD_EN, GPIO_LEVEL_LOW);
+ msleep(300);
+#endif
+}
+
+static int __init s6c1372_probe(struct platform_device *pdev)
+{
+ struct s6c1372_lcd *lcd;
+ int ret = 0;
+
+ lcd = kzalloc(sizeof(struct s6c1372_lcd), GFP_KERNEL);
+ if (!lcd) {
+ pr_err("failed to allocate for lcd\n");
+ ret = -ENOMEM;
+ goto err_alloc;
+ }
+
+ lcd->ld = lcd_device_register("panel", &pdev->dev, lcd, &s6c1372_ops);
+
+ if (IS_ERR(lcd->ld)) {
+ pr_err("failed to register lcd device\n");
+ ret = PTR_ERR(lcd->ld);
+ goto out_free_lcd;
+ }
+ lcd->lcd_pd = pdev->dev.platform_data;
+ if (IS_ERR(lcd->lcd_pd)) {
+ pr_err("no platform data for lcd, cannot attach\n");
+ ret = PTR_ERR(lcd->lcd_pd);
+ goto out_free_lcd;
+ }
+ lcd->power = 1;
+ ret = device_create_file(&lcd->ld->dev, &dev_attr_lcd_type);
+ if (ret < 0)
+ dev_err(&lcd->ld->dev, "failed to add sysfs entries\n");
+
+ dev_set_drvdata(&pdev->dev, lcd);
+
+ dev_info(&lcd->ld->dev, "lcd panel driver has been probed.\n");
+
+ return 0;
+
+out_free_lcd:
+ kfree(lcd);
+ return ret;
+err_alloc:
+ return ret;
+}
+
+static int __devexit s6c1372_remove(struct platform_device *pdev)
+{
+ struct s6c1372_lcd *lcd = dev_get_drvdata(&pdev->dev);
+
+ lcd_device_unregister(lcd->ld);
+ kfree(lcd);
+
+ return 0;
+}
+#ifdef CONFIG_FB_S5P_S6C1372
+static void s6c1372_shutdown(struct platform_device *pdev)
+{
+ gpio_set_value(GPIO_LED_BACKLIGHT_RESET, GPIO_LEVEL_LOW);
+ msleep(200);
+
+ s5c1372_ldi_disable();
+}
+#endif
+static struct platform_driver s6c1372_driver = {
+ .driver = {
+ .name = "s6c1372",
+ .owner = THIS_MODULE,
+ },
+ .probe = s6c1372_probe,
+ .remove = __exit_p(s6c1372_remove),
+ .suspend = NULL,
+ .resume = NULL,
+#ifdef CONFIG_FB_S5P_S6C1372
+ .shutdown = s6c1372_shutdown,
+#endif
+};
+
+static int __init s6c1372_init(void)
+{
+ return platform_driver_register(&s6c1372_driver);
+}
+
+static void __exit s6c1372_exit(void)
+{
+ platform_driver_unregister(&s6c1372_driver);
+}
+
+module_init(s6c1372_init);
+module_exit(s6c1372_exit);
+
+MODULE_AUTHOR("SAMSUNG");
+MODULE_DESCRIPTION("S6C1372 LCD driver");
+MODULE_LICENSE("GPL");
+