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-rw-r--r--kernel/drivers/video/fbdev/exynos/Kconfig32
-rw-r--r--kernel/drivers/video/fbdev/exynos/Makefile7
-rw-r--r--kernel/drivers/video/fbdev/exynos/exynos_mipi_dsi.c573
-rw-r--r--kernel/drivers/video/fbdev/exynos/exynos_mipi_dsi_common.c880
-rw-r--r--kernel/drivers/video/fbdev/exynos/exynos_mipi_dsi_common.h46
-rw-r--r--kernel/drivers/video/fbdev/exynos/exynos_mipi_dsi_lowlevel.c618
-rw-r--r--kernel/drivers/video/fbdev/exynos/exynos_mipi_dsi_lowlevel.h112
-rw-r--r--kernel/drivers/video/fbdev/exynos/exynos_mipi_dsi_regs.h149
-rw-r--r--kernel/drivers/video/fbdev/exynos/s6e8ax0.c892
9 files changed, 3309 insertions, 0 deletions
diff --git a/kernel/drivers/video/fbdev/exynos/Kconfig b/kernel/drivers/video/fbdev/exynos/Kconfig
new file mode 100644
index 000000000..1f16b4678
--- /dev/null
+++ b/kernel/drivers/video/fbdev/exynos/Kconfig
@@ -0,0 +1,32 @@
+#
+# Exynos Video configuration
+#
+
+menuconfig EXYNOS_VIDEO
+ bool "Exynos Video driver support"
+ depends on ARCH_S5PV210 || ARCH_EXYNOS
+ help
+ This enables support for EXYNOS Video device.
+
+if EXYNOS_VIDEO
+
+#
+# MIPI DSI driver
+#
+
+config EXYNOS_MIPI_DSI
+ bool "EXYNOS MIPI DSI driver support."
+ select GENERIC_PHY
+ help
+ This enables support for MIPI-DSI device.
+
+config EXYNOS_LCD_S6E8AX0
+ bool "S6E8AX0 MIPI AMOLED LCD Driver"
+ depends on EXYNOS_MIPI_DSI && BACKLIGHT_CLASS_DEVICE
+ depends on (LCD_CLASS_DEVICE = y)
+ default n
+ help
+ If you have an S6E8AX0 MIPI AMOLED LCD Panel, say Y to enable its
+ LCD control driver.
+
+endif # EXYNOS_VIDEO
diff --git a/kernel/drivers/video/fbdev/exynos/Makefile b/kernel/drivers/video/fbdev/exynos/Makefile
new file mode 100644
index 000000000..b5b1bd228
--- /dev/null
+++ b/kernel/drivers/video/fbdev/exynos/Makefile
@@ -0,0 +1,7 @@
+#
+# Makefile for the exynos video drivers.
+#
+
+obj-$(CONFIG_EXYNOS_MIPI_DSI) += exynos_mipi_dsi.o exynos_mipi_dsi_common.o \
+ exynos_mipi_dsi_lowlevel.o
+obj-$(CONFIG_EXYNOS_LCD_S6E8AX0) += s6e8ax0.o
diff --git a/kernel/drivers/video/fbdev/exynos/exynos_mipi_dsi.c b/kernel/drivers/video/fbdev/exynos/exynos_mipi_dsi.c
new file mode 100644
index 000000000..b527fe464
--- /dev/null
+++ b/kernel/drivers/video/fbdev/exynos/exynos_mipi_dsi.c
@@ -0,0 +1,573 @@
+/* linux/drivers/video/exynos/exynos_mipi_dsi.c
+ *
+ * Samsung SoC MIPI-DSIM driver.
+ *
+ * Copyright (c) 2012 Samsung Electronics Co., Ltd
+ *
+ * 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/clk.h>
+#include <linux/mutex.h>
+#include <linux/wait.h>
+#include <linux/fs.h>
+#include <linux/mm.h>
+#include <linux/fb.h>
+#include <linux/ctype.h>
+#include <linux/platform_device.h>
+#include <linux/io.h>
+#include <linux/irq.h>
+#include <linux/memory.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/kthread.h>
+#include <linux/notifier.h>
+#include <linux/phy/phy.h>
+#include <linux/regulator/consumer.h>
+#include <linux/pm_runtime.h>
+#include <linux/err.h>
+
+#include <video/exynos_mipi_dsim.h>
+
+#include "exynos_mipi_dsi_common.h"
+#include "exynos_mipi_dsi_lowlevel.h"
+
+struct mipi_dsim_ddi {
+ int bus_id;
+ struct list_head list;
+ struct mipi_dsim_lcd_device *dsim_lcd_dev;
+ struct mipi_dsim_lcd_driver *dsim_lcd_drv;
+};
+
+static LIST_HEAD(dsim_ddi_list);
+
+static DEFINE_MUTEX(mipi_dsim_lock);
+
+static struct mipi_dsim_platform_data *to_dsim_plat(struct platform_device
+ *pdev)
+{
+ return pdev->dev.platform_data;
+}
+
+static struct regulator_bulk_data supplies[] = {
+ { .supply = "vdd11", },
+ { .supply = "vdd18", },
+};
+
+static int exynos_mipi_regulator_enable(struct mipi_dsim_device *dsim)
+{
+ int ret;
+
+ mutex_lock(&dsim->lock);
+ ret = regulator_bulk_enable(ARRAY_SIZE(supplies), supplies);
+ mutex_unlock(&dsim->lock);
+
+ return ret;
+}
+
+static int exynos_mipi_regulator_disable(struct mipi_dsim_device *dsim)
+{
+ int ret;
+
+ mutex_lock(&dsim->lock);
+ ret = regulator_bulk_disable(ARRAY_SIZE(supplies), supplies);
+ mutex_unlock(&dsim->lock);
+
+ return ret;
+}
+
+/* update all register settings to MIPI DSI controller. */
+static void exynos_mipi_update_cfg(struct mipi_dsim_device *dsim)
+{
+ /*
+ * data from Display controller(FIMD) is not transferred in video mode
+ * but in case of command mode, all settings is not updated to
+ * registers.
+ */
+ exynos_mipi_dsi_stand_by(dsim, 0);
+
+ exynos_mipi_dsi_init_dsim(dsim);
+ exynos_mipi_dsi_init_link(dsim);
+
+ exynos_mipi_dsi_set_hs_enable(dsim);
+
+ /* set display timing. */
+ exynos_mipi_dsi_set_display_mode(dsim, dsim->dsim_config);
+
+ exynos_mipi_dsi_init_interrupt(dsim);
+
+ /*
+ * data from Display controller(FIMD) is transferred in video mode
+ * but in case of command mode, all settings are updated to registers.
+ */
+ exynos_mipi_dsi_stand_by(dsim, 1);
+}
+
+static int exynos_mipi_dsi_early_blank_mode(struct mipi_dsim_device *dsim,
+ int power)
+{
+ struct mipi_dsim_lcd_driver *client_drv = dsim->dsim_lcd_drv;
+ struct mipi_dsim_lcd_device *client_dev = dsim->dsim_lcd_dev;
+
+ switch (power) {
+ case FB_BLANK_POWERDOWN:
+ if (dsim->suspended)
+ return 0;
+
+ if (client_drv && client_drv->suspend)
+ client_drv->suspend(client_dev);
+
+ clk_disable(dsim->clock);
+
+ exynos_mipi_regulator_disable(dsim);
+
+ dsim->suspended = true;
+
+ break;
+ default:
+ break;
+ }
+
+ return 0;
+}
+
+static int exynos_mipi_dsi_blank_mode(struct mipi_dsim_device *dsim, int power)
+{
+ struct mipi_dsim_lcd_driver *client_drv = dsim->dsim_lcd_drv;
+ struct mipi_dsim_lcd_device *client_dev = dsim->dsim_lcd_dev;
+
+ switch (power) {
+ case FB_BLANK_UNBLANK:
+ if (!dsim->suspended)
+ return 0;
+
+ /* lcd panel power on. */
+ if (client_drv && client_drv->power_on)
+ client_drv->power_on(client_dev, 1);
+
+ exynos_mipi_regulator_enable(dsim);
+
+ /* enable MIPI-DSI PHY. */
+ phy_power_on(dsim->phy);
+
+ clk_enable(dsim->clock);
+
+ exynos_mipi_update_cfg(dsim);
+
+ /* set lcd panel sequence commands. */
+ if (client_drv && client_drv->set_sequence)
+ client_drv->set_sequence(client_dev);
+
+ dsim->suspended = false;
+
+ break;
+ case FB_BLANK_NORMAL:
+ /* TODO. */
+ break;
+ default:
+ break;
+ }
+
+ return 0;
+}
+
+int exynos_mipi_dsi_register_lcd_device(struct mipi_dsim_lcd_device *lcd_dev)
+{
+ struct mipi_dsim_ddi *dsim_ddi;
+
+ if (!lcd_dev->name) {
+ pr_err("dsim_lcd_device name is NULL.\n");
+ return -EFAULT;
+ }
+
+ dsim_ddi = kzalloc(sizeof(struct mipi_dsim_ddi), GFP_KERNEL);
+ if (!dsim_ddi) {
+ pr_err("failed to allocate dsim_ddi object.\n");
+ return -ENOMEM;
+ }
+
+ dsim_ddi->dsim_lcd_dev = lcd_dev;
+
+ mutex_lock(&mipi_dsim_lock);
+ list_add_tail(&dsim_ddi->list, &dsim_ddi_list);
+ mutex_unlock(&mipi_dsim_lock);
+
+ return 0;
+}
+
+static struct mipi_dsim_ddi *exynos_mipi_dsi_find_lcd_device(
+ struct mipi_dsim_lcd_driver *lcd_drv)
+{
+ struct mipi_dsim_ddi *dsim_ddi, *next;
+ struct mipi_dsim_lcd_device *lcd_dev;
+
+ mutex_lock(&mipi_dsim_lock);
+
+ list_for_each_entry_safe(dsim_ddi, next, &dsim_ddi_list, list) {
+ if (!dsim_ddi)
+ goto out;
+
+ lcd_dev = dsim_ddi->dsim_lcd_dev;
+ if (!lcd_dev)
+ continue;
+
+ if ((strcmp(lcd_drv->name, lcd_dev->name)) == 0) {
+ /**
+ * bus_id would be used to identify
+ * connected bus.
+ */
+ dsim_ddi->bus_id = lcd_dev->bus_id;
+ mutex_unlock(&mipi_dsim_lock);
+
+ return dsim_ddi;
+ }
+
+ list_del(&dsim_ddi->list);
+ kfree(dsim_ddi);
+ }
+
+out:
+ mutex_unlock(&mipi_dsim_lock);
+
+ return NULL;
+}
+
+int exynos_mipi_dsi_register_lcd_driver(struct mipi_dsim_lcd_driver *lcd_drv)
+{
+ struct mipi_dsim_ddi *dsim_ddi;
+
+ if (!lcd_drv->name) {
+ pr_err("dsim_lcd_driver name is NULL.\n");
+ return -EFAULT;
+ }
+
+ dsim_ddi = exynos_mipi_dsi_find_lcd_device(lcd_drv);
+ if (!dsim_ddi) {
+ pr_err("mipi_dsim_ddi object not found.\n");
+ return -EFAULT;
+ }
+
+ dsim_ddi->dsim_lcd_drv = lcd_drv;
+
+ pr_info("registered panel driver(%s) to mipi-dsi driver.\n",
+ lcd_drv->name);
+
+ return 0;
+
+}
+
+static struct mipi_dsim_ddi *exynos_mipi_dsi_bind_lcd_ddi(
+ struct mipi_dsim_device *dsim,
+ const char *name)
+{
+ struct mipi_dsim_ddi *dsim_ddi, *next;
+ struct mipi_dsim_lcd_driver *lcd_drv;
+ struct mipi_dsim_lcd_device *lcd_dev;
+ int ret;
+
+ mutex_lock(&dsim->lock);
+
+ list_for_each_entry_safe(dsim_ddi, next, &dsim_ddi_list, list) {
+ lcd_drv = dsim_ddi->dsim_lcd_drv;
+ lcd_dev = dsim_ddi->dsim_lcd_dev;
+ if (!lcd_drv || !lcd_dev ||
+ (dsim->id != dsim_ddi->bus_id))
+ continue;
+
+ dev_dbg(dsim->dev, "lcd_drv->id = %d, lcd_dev->id = %d\n",
+ lcd_drv->id, lcd_dev->id);
+ dev_dbg(dsim->dev, "lcd_dev->bus_id = %d, dsim->id = %d\n",
+ lcd_dev->bus_id, dsim->id);
+
+ if ((strcmp(lcd_drv->name, name) == 0)) {
+ lcd_dev->master = dsim;
+
+ lcd_dev->dev.parent = dsim->dev;
+ dev_set_name(&lcd_dev->dev, "%s", lcd_drv->name);
+
+ ret = device_register(&lcd_dev->dev);
+ if (ret < 0) {
+ dev_err(dsim->dev,
+ "can't register %s, status %d\n",
+ dev_name(&lcd_dev->dev), ret);
+ mutex_unlock(&dsim->lock);
+
+ return NULL;
+ }
+
+ dsim->dsim_lcd_dev = lcd_dev;
+ dsim->dsim_lcd_drv = lcd_drv;
+
+ mutex_unlock(&dsim->lock);
+
+ return dsim_ddi;
+ }
+ }
+
+ mutex_unlock(&dsim->lock);
+
+ return NULL;
+}
+
+/* define MIPI-DSI Master operations. */
+static struct mipi_dsim_master_ops master_ops = {
+ .cmd_read = exynos_mipi_dsi_rd_data,
+ .cmd_write = exynos_mipi_dsi_wr_data,
+ .get_dsim_frame_done = exynos_mipi_dsi_get_frame_done_status,
+ .clear_dsim_frame_done = exynos_mipi_dsi_clear_frame_done,
+ .set_early_blank_mode = exynos_mipi_dsi_early_blank_mode,
+ .set_blank_mode = exynos_mipi_dsi_blank_mode,
+};
+
+static int exynos_mipi_dsi_probe(struct platform_device *pdev)
+{
+ struct resource *res;
+ struct mipi_dsim_device *dsim;
+ struct mipi_dsim_config *dsim_config;
+ struct mipi_dsim_platform_data *dsim_pd;
+ struct mipi_dsim_ddi *dsim_ddi;
+ int ret = -EINVAL;
+
+ dsim = devm_kzalloc(&pdev->dev, sizeof(struct mipi_dsim_device),
+ GFP_KERNEL);
+ if (!dsim) {
+ dev_err(&pdev->dev, "failed to allocate dsim object.\n");
+ return -ENOMEM;
+ }
+
+ dsim->pd = to_dsim_plat(pdev);
+ dsim->dev = &pdev->dev;
+ dsim->id = pdev->id;
+
+ /* get mipi_dsim_platform_data. */
+ dsim_pd = (struct mipi_dsim_platform_data *)dsim->pd;
+ if (dsim_pd == NULL) {
+ dev_err(&pdev->dev, "failed to get platform data for dsim.\n");
+ return -EINVAL;
+ }
+ /* get mipi_dsim_config. */
+ dsim_config = dsim_pd->dsim_config;
+ if (dsim_config == NULL) {
+ dev_err(&pdev->dev, "failed to get dsim config data.\n");
+ return -EINVAL;
+ }
+
+ dsim->dsim_config = dsim_config;
+ dsim->master_ops = &master_ops;
+
+ mutex_init(&dsim->lock);
+
+ ret = devm_regulator_bulk_get(&pdev->dev, ARRAY_SIZE(supplies),
+ supplies);
+ if (ret) {
+ dev_err(&pdev->dev, "Failed to get regulators: %d\n", ret);
+ return ret;
+ }
+
+ dsim->phy = devm_phy_get(&pdev->dev, "dsim");
+ if (IS_ERR(dsim->phy))
+ return PTR_ERR(dsim->phy);
+
+ dsim->clock = devm_clk_get(&pdev->dev, "dsim0");
+ if (IS_ERR(dsim->clock)) {
+ dev_err(&pdev->dev, "failed to get dsim clock source\n");
+ return -ENODEV;
+ }
+
+ clk_enable(dsim->clock);
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+
+ dsim->reg_base = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(dsim->reg_base)) {
+ ret = PTR_ERR(dsim->reg_base);
+ goto error;
+ }
+
+ mutex_init(&dsim->lock);
+
+ /* bind lcd ddi matched with panel name. */
+ dsim_ddi = exynos_mipi_dsi_bind_lcd_ddi(dsim, dsim_pd->lcd_panel_name);
+ if (!dsim_ddi) {
+ dev_err(&pdev->dev, "mipi_dsim_ddi object not found.\n");
+ ret = -EINVAL;
+ goto error;
+ }
+
+ dsim->irq = platform_get_irq(pdev, 0);
+ if (IS_ERR_VALUE(dsim->irq)) {
+ dev_err(&pdev->dev, "failed to request dsim irq resource\n");
+ ret = -EINVAL;
+ goto error;
+ }
+
+ init_completion(&dsim_wr_comp);
+ init_completion(&dsim_rd_comp);
+ platform_set_drvdata(pdev, dsim);
+
+ ret = devm_request_irq(&pdev->dev, dsim->irq,
+ exynos_mipi_dsi_interrupt_handler,
+ IRQF_SHARED, dev_name(&pdev->dev), dsim);
+ if (ret != 0) {
+ dev_err(&pdev->dev, "failed to request dsim irq\n");
+ ret = -EINVAL;
+ goto error;
+ }
+
+ /* enable interrupts */
+ exynos_mipi_dsi_init_interrupt(dsim);
+
+ /* initialize mipi-dsi client(lcd panel). */
+ if (dsim_ddi->dsim_lcd_drv && dsim_ddi->dsim_lcd_drv->probe)
+ dsim_ddi->dsim_lcd_drv->probe(dsim_ddi->dsim_lcd_dev);
+
+ /* in case mipi-dsi has been enabled by bootloader */
+ if (dsim_pd->enabled) {
+ exynos_mipi_regulator_enable(dsim);
+ goto done;
+ }
+
+ /* lcd panel power on. */
+ if (dsim_ddi->dsim_lcd_drv && dsim_ddi->dsim_lcd_drv->power_on)
+ dsim_ddi->dsim_lcd_drv->power_on(dsim_ddi->dsim_lcd_dev, 1);
+
+ exynos_mipi_regulator_enable(dsim);
+
+ /* enable MIPI-DSI PHY. */
+ phy_power_on(dsim->phy);
+
+ exynos_mipi_update_cfg(dsim);
+
+ /* set lcd panel sequence commands. */
+ if (dsim_ddi->dsim_lcd_drv && dsim_ddi->dsim_lcd_drv->set_sequence)
+ dsim_ddi->dsim_lcd_drv->set_sequence(dsim_ddi->dsim_lcd_dev);
+
+ dsim->suspended = false;
+
+done:
+ platform_set_drvdata(pdev, dsim);
+
+ dev_dbg(&pdev->dev, "%s() completed successfully (%s mode)\n", __func__,
+ dsim_config->e_interface == DSIM_COMMAND ? "CPU" : "RGB");
+
+ return 0;
+
+error:
+ clk_disable(dsim->clock);
+ return ret;
+}
+
+static int exynos_mipi_dsi_remove(struct platform_device *pdev)
+{
+ struct mipi_dsim_device *dsim = platform_get_drvdata(pdev);
+ struct mipi_dsim_ddi *dsim_ddi, *next;
+ struct mipi_dsim_lcd_driver *dsim_lcd_drv;
+
+ clk_disable(dsim->clock);
+
+ list_for_each_entry_safe(dsim_ddi, next, &dsim_ddi_list, list) {
+ if (dsim_ddi) {
+ if (dsim->id != dsim_ddi->bus_id)
+ continue;
+
+ dsim_lcd_drv = dsim_ddi->dsim_lcd_drv;
+
+ if (dsim_lcd_drv->remove)
+ dsim_lcd_drv->remove(dsim_ddi->dsim_lcd_dev);
+
+ kfree(dsim_ddi);
+ }
+ }
+
+ return 0;
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int exynos_mipi_dsi_suspend(struct device *dev)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+ struct mipi_dsim_device *dsim = platform_get_drvdata(pdev);
+ struct mipi_dsim_lcd_driver *client_drv = dsim->dsim_lcd_drv;
+ struct mipi_dsim_lcd_device *client_dev = dsim->dsim_lcd_dev;
+
+ disable_irq(dsim->irq);
+
+ if (dsim->suspended)
+ return 0;
+
+ if (client_drv && client_drv->suspend)
+ client_drv->suspend(client_dev);
+
+ /* disable MIPI-DSI PHY. */
+ phy_power_off(dsim->phy);
+
+ clk_disable(dsim->clock);
+
+ exynos_mipi_regulator_disable(dsim);
+
+ dsim->suspended = true;
+
+ return 0;
+}
+
+static int exynos_mipi_dsi_resume(struct device *dev)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+ struct mipi_dsim_device *dsim = platform_get_drvdata(pdev);
+ struct mipi_dsim_lcd_driver *client_drv = dsim->dsim_lcd_drv;
+ struct mipi_dsim_lcd_device *client_dev = dsim->dsim_lcd_dev;
+
+ enable_irq(dsim->irq);
+
+ if (!dsim->suspended)
+ return 0;
+
+ /* lcd panel power on. */
+ if (client_drv && client_drv->power_on)
+ client_drv->power_on(client_dev, 1);
+
+ exynos_mipi_regulator_enable(dsim);
+
+ /* enable MIPI-DSI PHY. */
+ phy_power_on(dsim->phy);
+
+ clk_enable(dsim->clock);
+
+ exynos_mipi_update_cfg(dsim);
+
+ /* set lcd panel sequence commands. */
+ if (client_drv && client_drv->set_sequence)
+ client_drv->set_sequence(client_dev);
+
+ dsim->suspended = false;
+
+ return 0;
+}
+#endif
+
+static const struct dev_pm_ops exynos_mipi_dsi_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(exynos_mipi_dsi_suspend, exynos_mipi_dsi_resume)
+};
+
+static struct platform_driver exynos_mipi_dsi_driver = {
+ .probe = exynos_mipi_dsi_probe,
+ .remove = exynos_mipi_dsi_remove,
+ .driver = {
+ .name = "exynos-mipi-dsim",
+ .pm = &exynos_mipi_dsi_pm_ops,
+ },
+};
+
+module_platform_driver(exynos_mipi_dsi_driver);
+
+MODULE_AUTHOR("InKi Dae <inki.dae@samsung.com>");
+MODULE_DESCRIPTION("Samsung SoC MIPI-DSI driver");
+MODULE_LICENSE("GPL");
diff --git a/kernel/drivers/video/fbdev/exynos/exynos_mipi_dsi_common.c b/kernel/drivers/video/fbdev/exynos/exynos_mipi_dsi_common.c
new file mode 100644
index 000000000..2358a2fbb
--- /dev/null
+++ b/kernel/drivers/video/fbdev/exynos/exynos_mipi_dsi_common.c
@@ -0,0 +1,880 @@
+/* linux/drivers/video/exynos/exynos_mipi_dsi_common.c
+ *
+ * Samsung SoC MIPI-DSI common driver.
+ *
+ * Copyright (c) 2012 Samsung Electronics Co., Ltd
+ *
+ * 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/fs.h>
+#include <linux/mm.h>
+#include <linux/fb.h>
+#include <linux/ctype.h>
+#include <linux/platform_device.h>
+#include <linux/io.h>
+#include <linux/memory.h>
+#include <linux/delay.h>
+#include <linux/irqreturn.h>
+#include <linux/kthread.h>
+
+#include <video/mipi_display.h>
+#include <video/exynos_mipi_dsim.h>
+
+#include "exynos_mipi_dsi_regs.h"
+#include "exynos_mipi_dsi_lowlevel.h"
+#include "exynos_mipi_dsi_common.h"
+
+#define MIPI_FIFO_TIMEOUT msecs_to_jiffies(250)
+#define MIPI_RX_FIFO_READ_DONE 0x30800002
+#define MIPI_MAX_RX_FIFO 20
+#define MHZ (1000 * 1000)
+#define FIN_HZ (24 * MHZ)
+
+#define DFIN_PLL_MIN_HZ (6 * MHZ)
+#define DFIN_PLL_MAX_HZ (12 * MHZ)
+
+#define DFVCO_MIN_HZ (500 * MHZ)
+#define DFVCO_MAX_HZ (1000 * MHZ)
+
+#define TRY_GET_FIFO_TIMEOUT (5000 * 2)
+#define TRY_FIFO_CLEAR (10)
+
+/* MIPI-DSIM status types. */
+enum {
+ DSIM_STATE_INIT, /* should be initialized. */
+ DSIM_STATE_STOP, /* CPU and LCDC are LP mode. */
+ DSIM_STATE_HSCLKEN, /* HS clock was enabled. */
+ DSIM_STATE_ULPS
+};
+
+/* define DSI lane types. */
+enum {
+ DSIM_LANE_CLOCK = (1 << 0),
+ DSIM_LANE_DATA0 = (1 << 1),
+ DSIM_LANE_DATA1 = (1 << 2),
+ DSIM_LANE_DATA2 = (1 << 3),
+ DSIM_LANE_DATA3 = (1 << 4)
+};
+
+static unsigned int dpll_table[15] = {
+ 100, 120, 170, 220, 270,
+ 320, 390, 450, 510, 560,
+ 640, 690, 770, 870, 950
+};
+
+irqreturn_t exynos_mipi_dsi_interrupt_handler(int irq, void *dev_id)
+{
+ struct mipi_dsim_device *dsim = dev_id;
+ unsigned int intsrc, intmsk;
+
+ intsrc = exynos_mipi_dsi_read_interrupt(dsim);
+ intmsk = exynos_mipi_dsi_read_interrupt_mask(dsim);
+ intmsk = ~intmsk & intsrc;
+
+ if (intsrc & INTMSK_RX_DONE) {
+ complete(&dsim_rd_comp);
+ dev_dbg(dsim->dev, "MIPI INTMSK_RX_DONE\n");
+ }
+ if (intsrc & INTMSK_FIFO_EMPTY) {
+ complete(&dsim_wr_comp);
+ dev_dbg(dsim->dev, "MIPI INTMSK_FIFO_EMPTY\n");
+ }
+
+ exynos_mipi_dsi_clear_interrupt(dsim, intmsk);
+
+ return IRQ_HANDLED;
+}
+
+/*
+ * write long packet to mipi dsi slave
+ * @dsim: mipi dsim device structure.
+ * @data0: packet data to send.
+ * @data1: size of packet data
+ */
+static void exynos_mipi_dsi_long_data_wr(struct mipi_dsim_device *dsim,
+ const unsigned char *data0, unsigned int data_size)
+{
+ unsigned int data_cnt = 0, payload = 0;
+
+ /* in case that data count is more then 4 */
+ for (data_cnt = 0; data_cnt < data_size; data_cnt += 4) {
+ /*
+ * after sending 4bytes per one time,
+ * send remainder data less then 4.
+ */
+ if ((data_size - data_cnt) < 4) {
+ if ((data_size - data_cnt) == 3) {
+ payload = data0[data_cnt] |
+ data0[data_cnt + 1] << 8 |
+ data0[data_cnt + 2] << 16;
+ dev_dbg(dsim->dev, "count = 3 payload = %x, %x %x %x\n",
+ payload, data0[data_cnt],
+ data0[data_cnt + 1],
+ data0[data_cnt + 2]);
+ } else if ((data_size - data_cnt) == 2) {
+ payload = data0[data_cnt] |
+ data0[data_cnt + 1] << 8;
+ dev_dbg(dsim->dev,
+ "count = 2 payload = %x, %x %x\n", payload,
+ data0[data_cnt],
+ data0[data_cnt + 1]);
+ } else if ((data_size - data_cnt) == 1) {
+ payload = data0[data_cnt];
+ }
+
+ exynos_mipi_dsi_wr_tx_data(dsim, payload);
+ /* send 4bytes per one time. */
+ } else {
+ payload = data0[data_cnt] |
+ data0[data_cnt + 1] << 8 |
+ data0[data_cnt + 2] << 16 |
+ data0[data_cnt + 3] << 24;
+
+ dev_dbg(dsim->dev,
+ "count = 4 payload = %x, %x %x %x %x\n",
+ payload, *(u8 *)(data0 + data_cnt),
+ data0[data_cnt + 1],
+ data0[data_cnt + 2],
+ data0[data_cnt + 3]);
+
+ exynos_mipi_dsi_wr_tx_data(dsim, payload);
+ }
+ }
+}
+
+int exynos_mipi_dsi_wr_data(struct mipi_dsim_device *dsim, unsigned int data_id,
+ const unsigned char *data0, unsigned int data_size)
+{
+ unsigned int check_rx_ack = 0;
+
+ if (dsim->state == DSIM_STATE_ULPS) {
+ dev_err(dsim->dev, "state is ULPS.\n");
+
+ return -EINVAL;
+ }
+
+ /* FIXME!!! why does it need this delay? */
+ msleep(20);
+
+ mutex_lock(&dsim->lock);
+
+ switch (data_id) {
+ /* short packet types of packet types for command. */
+ case MIPI_DSI_GENERIC_SHORT_WRITE_0_PARAM:
+ case MIPI_DSI_GENERIC_SHORT_WRITE_1_PARAM:
+ case MIPI_DSI_GENERIC_SHORT_WRITE_2_PARAM:
+ case MIPI_DSI_DCS_SHORT_WRITE:
+ case MIPI_DSI_DCS_SHORT_WRITE_PARAM:
+ case MIPI_DSI_SET_MAXIMUM_RETURN_PACKET_SIZE:
+ exynos_mipi_dsi_wr_tx_header(dsim, data_id, data0[0], data0[1]);
+ if (check_rx_ack) {
+ /* process response func should be implemented */
+ mutex_unlock(&dsim->lock);
+ return 0;
+ } else {
+ mutex_unlock(&dsim->lock);
+ return -EINVAL;
+ }
+
+ /* general command */
+ case MIPI_DSI_COLOR_MODE_OFF:
+ case MIPI_DSI_COLOR_MODE_ON:
+ case MIPI_DSI_SHUTDOWN_PERIPHERAL:
+ case MIPI_DSI_TURN_ON_PERIPHERAL:
+ exynos_mipi_dsi_wr_tx_header(dsim, data_id, data0[0], data0[1]);
+ if (check_rx_ack) {
+ /* process response func should be implemented. */
+ mutex_unlock(&dsim->lock);
+ return 0;
+ } else {
+ mutex_unlock(&dsim->lock);
+ return -EINVAL;
+ }
+
+ /* packet types for video data */
+ case MIPI_DSI_V_SYNC_START:
+ case MIPI_DSI_V_SYNC_END:
+ case MIPI_DSI_H_SYNC_START:
+ case MIPI_DSI_H_SYNC_END:
+ case MIPI_DSI_END_OF_TRANSMISSION:
+ mutex_unlock(&dsim->lock);
+ return 0;
+
+ /* long packet type and null packet */
+ case MIPI_DSI_NULL_PACKET:
+ case MIPI_DSI_BLANKING_PACKET:
+ mutex_unlock(&dsim->lock);
+ return 0;
+ case MIPI_DSI_GENERIC_LONG_WRITE:
+ case MIPI_DSI_DCS_LONG_WRITE:
+ {
+ unsigned int size, payload = 0;
+ reinit_completion(&dsim_wr_comp);
+
+ size = data_size * 4;
+
+ /* if data count is less then 4, then send 3bytes data. */
+ if (data_size < 4) {
+ payload = data0[0] |
+ data0[1] << 8 |
+ data0[2] << 16;
+
+ exynos_mipi_dsi_wr_tx_data(dsim, payload);
+
+ dev_dbg(dsim->dev, "count = %d payload = %x,%x %x %x\n",
+ data_size, payload, data0[0],
+ data0[1], data0[2]);
+
+ /* in case that data count is more then 4 */
+ } else
+ exynos_mipi_dsi_long_data_wr(dsim, data0, data_size);
+
+ /* put data into header fifo */
+ exynos_mipi_dsi_wr_tx_header(dsim, data_id, data_size & 0xff,
+ (data_size & 0xff00) >> 8);
+
+ if (!wait_for_completion_interruptible_timeout(&dsim_wr_comp,
+ MIPI_FIFO_TIMEOUT)) {
+ dev_warn(dsim->dev, "command write timeout.\n");
+ mutex_unlock(&dsim->lock);
+ return -EAGAIN;
+ }
+
+ if (check_rx_ack) {
+ /* process response func should be implemented. */
+ mutex_unlock(&dsim->lock);
+ return 0;
+ } else {
+ mutex_unlock(&dsim->lock);
+ return -EINVAL;
+ }
+ }
+
+ /* packet typo for video data */
+ case MIPI_DSI_PACKED_PIXEL_STREAM_16:
+ case MIPI_DSI_PACKED_PIXEL_STREAM_18:
+ case MIPI_DSI_PIXEL_STREAM_3BYTE_18:
+ case MIPI_DSI_PACKED_PIXEL_STREAM_24:
+ if (check_rx_ack) {
+ /* process response func should be implemented. */
+ mutex_unlock(&dsim->lock);
+ return 0;
+ } else {
+ mutex_unlock(&dsim->lock);
+ return -EINVAL;
+ }
+ default:
+ dev_warn(dsim->dev,
+ "data id %x is not supported current DSI spec.\n",
+ data_id);
+
+ mutex_unlock(&dsim->lock);
+ return -EINVAL;
+ }
+}
+
+static unsigned int exynos_mipi_dsi_long_data_rd(struct mipi_dsim_device *dsim,
+ unsigned int req_size, unsigned int rx_data, u8 *rx_buf)
+{
+ unsigned int rcv_pkt, i, j;
+ u16 rxsize;
+
+ /* for long packet */
+ rxsize = (u16)((rx_data & 0x00ffff00) >> 8);
+ dev_dbg(dsim->dev, "mipi dsi rx size : %d\n", rxsize);
+ if (rxsize != req_size) {
+ dev_dbg(dsim->dev,
+ "received size mismatch received: %d, requested: %d\n",
+ rxsize, req_size);
+ goto err;
+ }
+
+ for (i = 0; i < (rxsize >> 2); i++) {
+ rcv_pkt = exynos_mipi_dsi_rd_rx_fifo(dsim);
+ dev_dbg(dsim->dev, "received pkt : %08x\n", rcv_pkt);
+ for (j = 0; j < 4; j++) {
+ rx_buf[(i * 4) + j] =
+ (u8)(rcv_pkt >> (j * 8)) & 0xff;
+ dev_dbg(dsim->dev, "received value : %02x\n",
+ (rcv_pkt >> (j * 8)) & 0xff);
+ }
+ }
+ if (rxsize % 4) {
+ rcv_pkt = exynos_mipi_dsi_rd_rx_fifo(dsim);
+ dev_dbg(dsim->dev, "received pkt : %08x\n", rcv_pkt);
+ for (j = 0; j < (rxsize % 4); j++) {
+ rx_buf[(i * 4) + j] =
+ (u8)(rcv_pkt >> (j * 8)) & 0xff;
+ dev_dbg(dsim->dev, "received value : %02x\n",
+ (rcv_pkt >> (j * 8)) & 0xff);
+ }
+ }
+
+ return rxsize;
+
+err:
+ return -EINVAL;
+}
+
+static unsigned int exynos_mipi_dsi_response_size(unsigned int req_size)
+{
+ switch (req_size) {
+ case 1:
+ return MIPI_DSI_RX_GENERIC_SHORT_READ_RESPONSE_1BYTE;
+ case 2:
+ return MIPI_DSI_RX_GENERIC_SHORT_READ_RESPONSE_2BYTE;
+ default:
+ return MIPI_DSI_RX_GENERIC_LONG_READ_RESPONSE;
+ }
+}
+
+int exynos_mipi_dsi_rd_data(struct mipi_dsim_device *dsim, unsigned int data_id,
+ unsigned int data0, unsigned int req_size, u8 *rx_buf)
+{
+ unsigned int rx_data, rcv_pkt, i;
+ u8 response = 0;
+ u16 rxsize;
+
+ if (dsim->state == DSIM_STATE_ULPS) {
+ dev_err(dsim->dev, "state is ULPS.\n");
+
+ return -EINVAL;
+ }
+
+ /* FIXME!!! */
+ msleep(20);
+
+ mutex_lock(&dsim->lock);
+ reinit_completion(&dsim_rd_comp);
+ exynos_mipi_dsi_rd_tx_header(dsim,
+ MIPI_DSI_SET_MAXIMUM_RETURN_PACKET_SIZE, req_size);
+
+ response = exynos_mipi_dsi_response_size(req_size);
+
+ switch (data_id) {
+ case MIPI_DSI_GENERIC_READ_REQUEST_0_PARAM:
+ case MIPI_DSI_GENERIC_READ_REQUEST_1_PARAM:
+ case MIPI_DSI_GENERIC_READ_REQUEST_2_PARAM:
+ case MIPI_DSI_DCS_READ:
+ exynos_mipi_dsi_rd_tx_header(dsim,
+ data_id, data0);
+ /* process response func should be implemented. */
+ break;
+ default:
+ dev_warn(dsim->dev,
+ "data id %x is not supported current DSI spec.\n",
+ data_id);
+
+ mutex_unlock(&dsim->lock);
+ return -EINVAL;
+ }
+
+ if (!wait_for_completion_interruptible_timeout(&dsim_rd_comp,
+ MIPI_FIFO_TIMEOUT)) {
+ pr_err("RX done interrupt timeout\n");
+ mutex_unlock(&dsim->lock);
+ return 0;
+ }
+
+ msleep(20);
+
+ rx_data = exynos_mipi_dsi_rd_rx_fifo(dsim);
+
+ if ((u8)(rx_data & 0xff) != response) {
+ printk(KERN_ERR
+ "mipi dsi wrong response rx_data : %x, response:%x\n",
+ rx_data, response);
+ goto clear_rx_fifo;
+ }
+
+ if (req_size <= 2) {
+ /* for short packet */
+ for (i = 0; i < req_size; i++)
+ rx_buf[i] = (rx_data >> (8 + (i * 8))) & 0xff;
+ rxsize = req_size;
+ } else {
+ /* for long packet */
+ rxsize = exynos_mipi_dsi_long_data_rd(dsim, req_size, rx_data,
+ rx_buf);
+ if (rxsize != req_size)
+ goto clear_rx_fifo;
+ }
+
+ rcv_pkt = exynos_mipi_dsi_rd_rx_fifo(dsim);
+
+ msleep(20);
+
+ if (rcv_pkt != MIPI_RX_FIFO_READ_DONE) {
+ dev_info(dsim->dev,
+ "Can't found RX FIFO READ DONE FLAG : %x\n", rcv_pkt);
+ goto clear_rx_fifo;
+ }
+
+ mutex_unlock(&dsim->lock);
+
+ return rxsize;
+
+clear_rx_fifo:
+ i = 0;
+ while (1) {
+ rcv_pkt = exynos_mipi_dsi_rd_rx_fifo(dsim);
+ if ((rcv_pkt == MIPI_RX_FIFO_READ_DONE)
+ || (i > MIPI_MAX_RX_FIFO))
+ break;
+ dev_dbg(dsim->dev,
+ "mipi dsi clear rx fifo : %08x\n", rcv_pkt);
+ i++;
+ }
+ dev_info(dsim->dev,
+ "mipi dsi rx done count : %d, rcv_pkt : %08x\n", i, rcv_pkt);
+
+ mutex_unlock(&dsim->lock);
+
+ return 0;
+}
+
+static int exynos_mipi_dsi_pll_on(struct mipi_dsim_device *dsim,
+ unsigned int enable)
+{
+ int sw_timeout;
+
+ if (enable) {
+ sw_timeout = 1000;
+
+ exynos_mipi_dsi_enable_pll(dsim, 1);
+ while (1) {
+ sw_timeout--;
+ if (exynos_mipi_dsi_is_pll_stable(dsim))
+ return 0;
+ if (sw_timeout == 0)
+ return -EINVAL;
+ }
+ } else
+ exynos_mipi_dsi_enable_pll(dsim, 0);
+
+ return 0;
+}
+
+static unsigned long exynos_mipi_dsi_change_pll(struct mipi_dsim_device *dsim,
+ unsigned int pre_divider, unsigned int main_divider,
+ unsigned int scaler)
+{
+ unsigned long dfin_pll, dfvco, dpll_out;
+ unsigned int i, freq_band = 0xf;
+
+ dfin_pll = (FIN_HZ / pre_divider);
+
+ /******************************************************
+ * Serial Clock(=ByteClk X 8) FreqBand[3:0] *
+ ******************************************************
+ * ~ 99.99 MHz 0000
+ * 100 ~ 119.99 MHz 0001
+ * 120 ~ 159.99 MHz 0010
+ * 160 ~ 199.99 MHz 0011
+ * 200 ~ 239.99 MHz 0100
+ * 140 ~ 319.99 MHz 0101
+ * 320 ~ 389.99 MHz 0110
+ * 390 ~ 449.99 MHz 0111
+ * 450 ~ 509.99 MHz 1000
+ * 510 ~ 559.99 MHz 1001
+ * 560 ~ 639.99 MHz 1010
+ * 640 ~ 689.99 MHz 1011
+ * 690 ~ 769.99 MHz 1100
+ * 770 ~ 869.99 MHz 1101
+ * 870 ~ 949.99 MHz 1110
+ * 950 ~ 1000 MHz 1111
+ ******************************************************/
+ if (dfin_pll < DFIN_PLL_MIN_HZ || dfin_pll > DFIN_PLL_MAX_HZ) {
+ dev_warn(dsim->dev, "fin_pll range should be 6MHz ~ 12MHz\n");
+ exynos_mipi_dsi_enable_afc(dsim, 0, 0);
+ } else {
+ if (dfin_pll < 7 * MHZ)
+ exynos_mipi_dsi_enable_afc(dsim, 1, 0x1);
+ else if (dfin_pll < 8 * MHZ)
+ exynos_mipi_dsi_enable_afc(dsim, 1, 0x0);
+ else if (dfin_pll < 9 * MHZ)
+ exynos_mipi_dsi_enable_afc(dsim, 1, 0x3);
+ else if (dfin_pll < 10 * MHZ)
+ exynos_mipi_dsi_enable_afc(dsim, 1, 0x2);
+ else if (dfin_pll < 11 * MHZ)
+ exynos_mipi_dsi_enable_afc(dsim, 1, 0x5);
+ else
+ exynos_mipi_dsi_enable_afc(dsim, 1, 0x4);
+ }
+
+ dfvco = dfin_pll * main_divider;
+ dev_dbg(dsim->dev, "dfvco = %lu, dfin_pll = %lu, main_divider = %d\n",
+ dfvco, dfin_pll, main_divider);
+ if (dfvco < DFVCO_MIN_HZ || dfvco > DFVCO_MAX_HZ)
+ dev_warn(dsim->dev, "fvco range should be 500MHz ~ 1000MHz\n");
+
+ dpll_out = dfvco / (1 << scaler);
+ dev_dbg(dsim->dev, "dpll_out = %lu, dfvco = %lu, scaler = %d\n",
+ dpll_out, dfvco, scaler);
+
+ for (i = 0; i < ARRAY_SIZE(dpll_table); i++) {
+ if (dpll_out < dpll_table[i] * MHZ) {
+ freq_band = i;
+ break;
+ }
+ }
+
+ dev_dbg(dsim->dev, "freq_band = %d\n", freq_band);
+
+ exynos_mipi_dsi_pll_freq(dsim, pre_divider, main_divider, scaler);
+
+ exynos_mipi_dsi_hs_zero_ctrl(dsim, 0);
+ exynos_mipi_dsi_prep_ctrl(dsim, 0);
+
+ /* Freq Band */
+ exynos_mipi_dsi_pll_freq_band(dsim, freq_band);
+
+ /* Stable time */
+ exynos_mipi_dsi_pll_stable_time(dsim, dsim->dsim_config->pll_stable_time);
+
+ /* Enable PLL */
+ dev_dbg(dsim->dev, "FOUT of mipi dphy pll is %luMHz\n",
+ (dpll_out / MHZ));
+
+ return dpll_out;
+}
+
+static int exynos_mipi_dsi_set_clock(struct mipi_dsim_device *dsim,
+ unsigned int byte_clk_sel, unsigned int enable)
+{
+ unsigned int esc_div;
+ unsigned long esc_clk_error_rate;
+ unsigned long hs_clk = 0, byte_clk = 0, escape_clk = 0;
+
+ if (enable) {
+ dsim->e_clk_src = byte_clk_sel;
+
+ /* Escape mode clock and byte clock source */
+ exynos_mipi_dsi_set_byte_clock_src(dsim, byte_clk_sel);
+
+ /* DPHY, DSIM Link : D-PHY clock out */
+ if (byte_clk_sel == DSIM_PLL_OUT_DIV8) {
+ hs_clk = exynos_mipi_dsi_change_pll(dsim,
+ dsim->dsim_config->p, dsim->dsim_config->m,
+ dsim->dsim_config->s);
+ if (hs_clk == 0) {
+ dev_err(dsim->dev,
+ "failed to get hs clock.\n");
+ return -EINVAL;
+ }
+
+ byte_clk = hs_clk / 8;
+ exynos_mipi_dsi_enable_pll_bypass(dsim, 0);
+ exynos_mipi_dsi_pll_on(dsim, 1);
+ /* DPHY : D-PHY clock out, DSIM link : external clock out */
+ } else if (byte_clk_sel == DSIM_EXT_CLK_DIV8) {
+ dev_warn(dsim->dev, "this project is not support\n");
+ dev_warn(dsim->dev,
+ "external clock source for MIPI DSIM.\n");
+ } else if (byte_clk_sel == DSIM_EXT_CLK_BYPASS) {
+ dev_warn(dsim->dev, "this project is not support\n");
+ dev_warn(dsim->dev,
+ "external clock source for MIPI DSIM\n");
+ }
+
+ /* escape clock divider */
+ esc_div = byte_clk / (dsim->dsim_config->esc_clk);
+ dev_dbg(dsim->dev,
+ "esc_div = %d, byte_clk = %lu, esc_clk = %lu\n",
+ esc_div, byte_clk, dsim->dsim_config->esc_clk);
+ if ((byte_clk / esc_div) >= (20 * MHZ) ||
+ (byte_clk / esc_div) >
+ dsim->dsim_config->esc_clk)
+ esc_div += 1;
+
+ escape_clk = byte_clk / esc_div;
+ dev_dbg(dsim->dev,
+ "escape_clk = %lu, byte_clk = %lu, esc_div = %d\n",
+ escape_clk, byte_clk, esc_div);
+
+ /* enable escape clock. */
+ exynos_mipi_dsi_enable_byte_clock(dsim, 1);
+
+ /* enable byte clk and escape clock */
+ exynos_mipi_dsi_set_esc_clk_prs(dsim, 1, esc_div);
+ /* escape clock on lane */
+ exynos_mipi_dsi_enable_esc_clk_on_lane(dsim,
+ (DSIM_LANE_CLOCK | dsim->data_lane), 1);
+
+ dev_dbg(dsim->dev, "byte clock is %luMHz\n",
+ (byte_clk / MHZ));
+ dev_dbg(dsim->dev, "escape clock that user's need is %lu\n",
+ (dsim->dsim_config->esc_clk / MHZ));
+ dev_dbg(dsim->dev, "escape clock divider is %x\n", esc_div);
+ dev_dbg(dsim->dev, "escape clock is %luMHz\n",
+ ((byte_clk / esc_div) / MHZ));
+
+ if ((byte_clk / esc_div) > escape_clk) {
+ esc_clk_error_rate = escape_clk /
+ (byte_clk / esc_div);
+ dev_warn(dsim->dev, "error rate is %lu over.\n",
+ (esc_clk_error_rate / 100));
+ } else if ((byte_clk / esc_div) < (escape_clk)) {
+ esc_clk_error_rate = (byte_clk / esc_div) /
+ escape_clk;
+ dev_warn(dsim->dev, "error rate is %lu under.\n",
+ (esc_clk_error_rate / 100));
+ }
+ } else {
+ exynos_mipi_dsi_enable_esc_clk_on_lane(dsim,
+ (DSIM_LANE_CLOCK | dsim->data_lane), 0);
+ exynos_mipi_dsi_set_esc_clk_prs(dsim, 0, 0);
+
+ /* disable escape clock. */
+ exynos_mipi_dsi_enable_byte_clock(dsim, 0);
+
+ if (byte_clk_sel == DSIM_PLL_OUT_DIV8)
+ exynos_mipi_dsi_pll_on(dsim, 0);
+ }
+
+ return 0;
+}
+
+int exynos_mipi_dsi_init_dsim(struct mipi_dsim_device *dsim)
+{
+ dsim->state = DSIM_STATE_INIT;
+
+ switch (dsim->dsim_config->e_no_data_lane) {
+ case DSIM_DATA_LANE_1:
+ dsim->data_lane = DSIM_LANE_DATA0;
+ break;
+ case DSIM_DATA_LANE_2:
+ dsim->data_lane = DSIM_LANE_DATA0 | DSIM_LANE_DATA1;
+ break;
+ case DSIM_DATA_LANE_3:
+ dsim->data_lane = DSIM_LANE_DATA0 | DSIM_LANE_DATA1 |
+ DSIM_LANE_DATA2;
+ break;
+ case DSIM_DATA_LANE_4:
+ dsim->data_lane = DSIM_LANE_DATA0 | DSIM_LANE_DATA1 |
+ DSIM_LANE_DATA2 | DSIM_LANE_DATA3;
+ break;
+ default:
+ dev_info(dsim->dev, "data lane is invalid.\n");
+ return -EINVAL;
+ }
+
+ exynos_mipi_dsi_sw_reset(dsim);
+ exynos_mipi_dsi_func_reset(dsim);
+
+ exynos_mipi_dsi_dp_dn_swap(dsim, 0);
+
+ return 0;
+}
+
+void exynos_mipi_dsi_init_interrupt(struct mipi_dsim_device *dsim)
+{
+ unsigned int src = 0;
+
+ src = (INTSRC_SFR_FIFO_EMPTY | INTSRC_RX_DATA_DONE);
+ exynos_mipi_dsi_set_interrupt(dsim, src, 1);
+
+ src = 0;
+ src = ~(INTMSK_RX_DONE | INTMSK_FIFO_EMPTY);
+ exynos_mipi_dsi_set_interrupt_mask(dsim, src, 1);
+}
+
+int exynos_mipi_dsi_enable_frame_done_int(struct mipi_dsim_device *dsim,
+ unsigned int enable)
+{
+ /* enable only frame done interrupt */
+ exynos_mipi_dsi_set_interrupt_mask(dsim, INTMSK_FRAME_DONE, enable);
+
+ return 0;
+}
+
+void exynos_mipi_dsi_stand_by(struct mipi_dsim_device *dsim,
+ unsigned int enable)
+{
+
+ /* consider Main display and Sub display. */
+
+ exynos_mipi_dsi_set_main_stand_by(dsim, enable);
+}
+
+int exynos_mipi_dsi_set_display_mode(struct mipi_dsim_device *dsim,
+ struct mipi_dsim_config *dsim_config)
+{
+ struct mipi_dsim_platform_data *dsim_pd;
+ struct fb_videomode *timing;
+
+ dsim_pd = (struct mipi_dsim_platform_data *)dsim->pd;
+ timing = (struct fb_videomode *)dsim_pd->lcd_panel_info;
+
+ /* in case of VIDEO MODE (RGB INTERFACE), it sets polarities. */
+ if (dsim_config->e_interface == (u32) DSIM_VIDEO) {
+ if (dsim_config->auto_vertical_cnt == 0) {
+ exynos_mipi_dsi_set_main_disp_vporch(dsim,
+ dsim_config->cmd_allow,
+ timing->lower_margin,
+ timing->upper_margin);
+ exynos_mipi_dsi_set_main_disp_hporch(dsim,
+ timing->right_margin,
+ timing->left_margin);
+ exynos_mipi_dsi_set_main_disp_sync_area(dsim,
+ timing->vsync_len,
+ timing->hsync_len);
+ }
+ }
+
+ exynos_mipi_dsi_set_main_disp_resol(dsim, timing->xres,
+ timing->yres);
+
+ exynos_mipi_dsi_display_config(dsim, dsim_config);
+
+ dev_info(dsim->dev, "lcd panel ==> width = %d, height = %d\n",
+ timing->xres, timing->yres);
+
+ return 0;
+}
+
+int exynos_mipi_dsi_init_link(struct mipi_dsim_device *dsim)
+{
+ unsigned int time_out = 100;
+
+ switch (dsim->state) {
+ case DSIM_STATE_INIT:
+ exynos_mipi_dsi_init_fifo_pointer(dsim, 0x1f);
+
+ /* dsi configuration */
+ exynos_mipi_dsi_init_config(dsim);
+ exynos_mipi_dsi_enable_lane(dsim, DSIM_LANE_CLOCK, 1);
+ exynos_mipi_dsi_enable_lane(dsim, dsim->data_lane, 1);
+
+ /* set clock configuration */
+ exynos_mipi_dsi_set_clock(dsim, dsim->dsim_config->e_byte_clk, 1);
+
+ /* check clock and data lane state are stop state */
+ while (!(exynos_mipi_dsi_is_lane_state(dsim))) {
+ time_out--;
+ if (time_out == 0) {
+ dev_err(dsim->dev,
+ "DSI Master is not stop state.\n");
+ dev_err(dsim->dev,
+ "Check initialization process\n");
+
+ return -EINVAL;
+ }
+ }
+ if (time_out != 0) {
+ dev_info(dsim->dev,
+ "DSI Master driver has been completed.\n");
+ dev_info(dsim->dev, "DSI Master state is stop state\n");
+ }
+
+ dsim->state = DSIM_STATE_STOP;
+
+ /* BTA sequence counters */
+ exynos_mipi_dsi_set_stop_state_counter(dsim,
+ dsim->dsim_config->stop_holding_cnt);
+ exynos_mipi_dsi_set_bta_timeout(dsim,
+ dsim->dsim_config->bta_timeout);
+ exynos_mipi_dsi_set_lpdr_timeout(dsim,
+ dsim->dsim_config->rx_timeout);
+
+ return 0;
+ default:
+ dev_info(dsim->dev, "DSI Master is already init.\n");
+ return 0;
+ }
+
+ return 0;
+}
+
+int exynos_mipi_dsi_set_hs_enable(struct mipi_dsim_device *dsim)
+{
+ if (dsim->state != DSIM_STATE_STOP) {
+ dev_warn(dsim->dev, "DSIM is not in stop state.\n");
+ return 0;
+ }
+
+ if (dsim->e_clk_src == DSIM_EXT_CLK_BYPASS) {
+ dev_warn(dsim->dev, "clock source is external bypass.\n");
+ return 0;
+ }
+
+ dsim->state = DSIM_STATE_HSCLKEN;
+
+ /* set LCDC and CPU transfer mode to HS. */
+ exynos_mipi_dsi_set_lcdc_transfer_mode(dsim, 0);
+ exynos_mipi_dsi_set_cpu_transfer_mode(dsim, 0);
+ exynos_mipi_dsi_enable_hs_clock(dsim, 1);
+
+ return 0;
+}
+
+int exynos_mipi_dsi_set_data_transfer_mode(struct mipi_dsim_device *dsim,
+ unsigned int mode)
+{
+ if (mode) {
+ if (dsim->state != DSIM_STATE_HSCLKEN) {
+ dev_err(dsim->dev, "HS Clock lane is not enabled.\n");
+ return -EINVAL;
+ }
+
+ exynos_mipi_dsi_set_lcdc_transfer_mode(dsim, 0);
+ } else {
+ if (dsim->state == DSIM_STATE_INIT || dsim->state ==
+ DSIM_STATE_ULPS) {
+ dev_err(dsim->dev,
+ "DSI Master is not STOP or HSDT state.\n");
+ return -EINVAL;
+ }
+
+ exynos_mipi_dsi_set_cpu_transfer_mode(dsim, 0);
+ }
+
+ return 0;
+}
+
+int exynos_mipi_dsi_get_frame_done_status(struct mipi_dsim_device *dsim)
+{
+ return _exynos_mipi_dsi_get_frame_done_status(dsim);
+}
+
+int exynos_mipi_dsi_clear_frame_done(struct mipi_dsim_device *dsim)
+{
+ _exynos_mipi_dsi_clear_frame_done(dsim);
+
+ return 0;
+}
+
+int exynos_mipi_dsi_fifo_clear(struct mipi_dsim_device *dsim,
+ unsigned int val)
+{
+ int try = TRY_FIFO_CLEAR;
+
+ exynos_mipi_dsi_sw_reset_release(dsim);
+ exynos_mipi_dsi_func_reset(dsim);
+
+ do {
+ if (exynos_mipi_dsi_get_sw_reset_release(dsim)) {
+ exynos_mipi_dsi_init_interrupt(dsim);
+ dev_dbg(dsim->dev, "reset release done.\n");
+ return 0;
+ }
+ } while (--try);
+
+ dev_err(dsim->dev, "failed to clear dsim fifo.\n");
+ return -EAGAIN;
+}
+
+MODULE_AUTHOR("InKi Dae <inki.dae@samsung.com>");
+MODULE_DESCRIPTION("Samsung SoC MIPI-DSI common driver");
+MODULE_LICENSE("GPL");
diff --git a/kernel/drivers/video/fbdev/exynos/exynos_mipi_dsi_common.h b/kernel/drivers/video/fbdev/exynos/exynos_mipi_dsi_common.h
new file mode 100644
index 000000000..412552274
--- /dev/null
+++ b/kernel/drivers/video/fbdev/exynos/exynos_mipi_dsi_common.h
@@ -0,0 +1,46 @@
+/* linux/drivers/video/exynos_mipi_dsi_common.h
+ *
+ * Header file for Samsung SoC MIPI-DSI common driver.
+ *
+ * Copyright (c) 2012 Samsung Electronics Co., Ltd
+ *
+ * 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.
+*/
+
+#ifndef _EXYNOS_MIPI_DSI_COMMON_H
+#define _EXYNOS_MIPI_DSI_COMMON_H
+
+static DECLARE_COMPLETION(dsim_rd_comp);
+static DECLARE_COMPLETION(dsim_wr_comp);
+
+int exynos_mipi_dsi_wr_data(struct mipi_dsim_device *dsim, unsigned int data_id,
+ const unsigned char *data0, unsigned int data_size);
+int exynos_mipi_dsi_rd_data(struct mipi_dsim_device *dsim, unsigned int data_id,
+ unsigned int data0, unsigned int req_size, u8 *rx_buf);
+irqreturn_t exynos_mipi_dsi_interrupt_handler(int irq, void *dev_id);
+void exynos_mipi_dsi_init_interrupt(struct mipi_dsim_device *dsim);
+int exynos_mipi_dsi_init_dsim(struct mipi_dsim_device *dsim);
+void exynos_mipi_dsi_stand_by(struct mipi_dsim_device *dsim,
+ unsigned int enable);
+int exynos_mipi_dsi_set_display_mode(struct mipi_dsim_device *dsim,
+ struct mipi_dsim_config *dsim_info);
+int exynos_mipi_dsi_init_link(struct mipi_dsim_device *dsim);
+int exynos_mipi_dsi_set_hs_enable(struct mipi_dsim_device *dsim);
+int exynos_mipi_dsi_set_data_transfer_mode(struct mipi_dsim_device *dsim,
+ unsigned int mode);
+int exynos_mipi_dsi_enable_frame_done_int(struct mipi_dsim_device *dsim,
+ unsigned int enable);
+int exynos_mipi_dsi_get_frame_done_status(struct mipi_dsim_device *dsim);
+int exynos_mipi_dsi_clear_frame_done(struct mipi_dsim_device *dsim);
+
+extern struct fb_info *registered_fb[FB_MAX] __read_mostly;
+
+int exynos_mipi_dsi_fifo_clear(struct mipi_dsim_device *dsim,
+ unsigned int val);
+
+#endif /* _EXYNOS_MIPI_DSI_COMMON_H */
diff --git a/kernel/drivers/video/fbdev/exynos/exynos_mipi_dsi_lowlevel.c b/kernel/drivers/video/fbdev/exynos/exynos_mipi_dsi_lowlevel.c
new file mode 100644
index 000000000..c148d0654
--- /dev/null
+++ b/kernel/drivers/video/fbdev/exynos/exynos_mipi_dsi_lowlevel.c
@@ -0,0 +1,618 @@
+/* linux/drivers/video/exynos/exynos_mipi_dsi_lowlevel.c
+ *
+ * Samsung SoC MIPI-DSI lowlevel driver.
+ *
+ * Copyright (c) 2012 Samsung Electronics Co., Ltd
+ *
+ * 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/delay.h>
+#include <linux/fs.h>
+#include <linux/mm.h>
+#include <linux/ctype.h>
+#include <linux/platform_device.h>
+#include <linux/io.h>
+
+#include <video/exynos_mipi_dsim.h>
+
+#include "exynos_mipi_dsi_regs.h"
+#include "exynos_mipi_dsi_lowlevel.h"
+
+void exynos_mipi_dsi_func_reset(struct mipi_dsim_device *dsim)
+{
+ unsigned int reg;
+
+ reg = readl(dsim->reg_base + EXYNOS_DSIM_SWRST);
+
+ reg |= DSIM_FUNCRST;
+
+ writel(reg, dsim->reg_base + EXYNOS_DSIM_SWRST);
+}
+
+void exynos_mipi_dsi_sw_reset(struct mipi_dsim_device *dsim)
+{
+ unsigned int reg;
+
+ reg = readl(dsim->reg_base + EXYNOS_DSIM_SWRST);
+
+ reg |= DSIM_SWRST;
+
+ writel(reg, dsim->reg_base + EXYNOS_DSIM_SWRST);
+}
+
+void exynos_mipi_dsi_sw_reset_release(struct mipi_dsim_device *dsim)
+{
+ unsigned int reg;
+
+ reg = readl(dsim->reg_base + EXYNOS_DSIM_INTSRC);
+
+ reg |= INTSRC_SW_RST_RELEASE;
+
+ writel(reg, dsim->reg_base + EXYNOS_DSIM_INTSRC);
+}
+
+int exynos_mipi_dsi_get_sw_reset_release(struct mipi_dsim_device *dsim)
+{
+ return (readl(dsim->reg_base + EXYNOS_DSIM_INTSRC)) &
+ INTSRC_SW_RST_RELEASE;
+}
+
+unsigned int exynos_mipi_dsi_read_interrupt_mask(struct mipi_dsim_device *dsim)
+{
+ unsigned int reg;
+
+ reg = readl(dsim->reg_base + EXYNOS_DSIM_INTMSK);
+
+ return reg;
+}
+
+void exynos_mipi_dsi_set_interrupt_mask(struct mipi_dsim_device *dsim,
+ unsigned int mode, unsigned int mask)
+{
+ unsigned int reg = 0;
+
+ if (mask)
+ reg |= mode;
+ else
+ reg &= ~mode;
+
+ writel(reg, dsim->reg_base + EXYNOS_DSIM_INTMSK);
+}
+
+void exynos_mipi_dsi_init_fifo_pointer(struct mipi_dsim_device *dsim,
+ unsigned int cfg)
+{
+ unsigned int reg;
+
+ reg = readl(dsim->reg_base + EXYNOS_DSIM_FIFOCTRL);
+
+ writel(reg & ~(cfg), dsim->reg_base + EXYNOS_DSIM_FIFOCTRL);
+ mdelay(10);
+ reg |= cfg;
+
+ writel(reg, dsim->reg_base + EXYNOS_DSIM_FIFOCTRL);
+}
+
+/*
+ * this function set PLL P, M and S value in D-PHY
+ */
+void exynos_mipi_dsi_set_phy_tunning(struct mipi_dsim_device *dsim,
+ unsigned int value)
+{
+ writel(DSIM_AFC_CTL(value), dsim->reg_base + EXYNOS_DSIM_PHYACCHR);
+}
+
+void exynos_mipi_dsi_set_main_stand_by(struct mipi_dsim_device *dsim,
+ unsigned int enable)
+{
+ unsigned int reg;
+
+ reg = readl(dsim->reg_base + EXYNOS_DSIM_MDRESOL);
+
+ reg &= ~DSIM_MAIN_STAND_BY;
+
+ if (enable)
+ reg |= DSIM_MAIN_STAND_BY;
+
+ writel(reg, dsim->reg_base + EXYNOS_DSIM_MDRESOL);
+}
+
+void exynos_mipi_dsi_set_main_disp_resol(struct mipi_dsim_device *dsim,
+ unsigned int width_resol, unsigned int height_resol)
+{
+ unsigned int reg;
+
+ /* standby should be set after configuration so set to not ready*/
+ reg = (readl(dsim->reg_base + EXYNOS_DSIM_MDRESOL)) &
+ ~(DSIM_MAIN_STAND_BY);
+ writel(reg, dsim->reg_base + EXYNOS_DSIM_MDRESOL);
+
+ reg &= ~((0x7ff << 16) | (0x7ff << 0));
+ reg |= DSIM_MAIN_VRESOL(height_resol) | DSIM_MAIN_HRESOL(width_resol);
+
+ reg |= DSIM_MAIN_STAND_BY;
+ writel(reg, dsim->reg_base + EXYNOS_DSIM_MDRESOL);
+}
+
+void exynos_mipi_dsi_set_main_disp_vporch(struct mipi_dsim_device *dsim,
+ unsigned int cmd_allow, unsigned int vfront, unsigned int vback)
+{
+ unsigned int reg;
+
+ reg = (readl(dsim->reg_base + EXYNOS_DSIM_MVPORCH)) &
+ ~((DSIM_CMD_ALLOW_MASK) | (DSIM_STABLE_VFP_MASK) |
+ (DSIM_MAIN_VBP_MASK));
+
+ reg |= (DSIM_CMD_ALLOW_SHIFT(cmd_allow & 0xf) |
+ DSIM_STABLE_VFP_SHIFT(vfront & 0x7ff) |
+ DSIM_MAIN_VBP_SHIFT(vback & 0x7ff));
+
+ writel(reg, dsim->reg_base + EXYNOS_DSIM_MVPORCH);
+}
+
+void exynos_mipi_dsi_set_main_disp_hporch(struct mipi_dsim_device *dsim,
+ unsigned int front, unsigned int back)
+{
+ unsigned int reg;
+
+ reg = (readl(dsim->reg_base + EXYNOS_DSIM_MHPORCH)) &
+ ~((DSIM_MAIN_HFP_MASK) | (DSIM_MAIN_HBP_MASK));
+
+ reg |= DSIM_MAIN_HFP_SHIFT(front) | DSIM_MAIN_HBP_SHIFT(back);
+
+ writel(reg, dsim->reg_base + EXYNOS_DSIM_MHPORCH);
+}
+
+void exynos_mipi_dsi_set_main_disp_sync_area(struct mipi_dsim_device *dsim,
+ unsigned int vert, unsigned int hori)
+{
+ unsigned int reg;
+
+ reg = (readl(dsim->reg_base + EXYNOS_DSIM_MSYNC)) &
+ ~((DSIM_MAIN_VSA_MASK) | (DSIM_MAIN_HSA_MASK));
+
+ reg |= (DSIM_MAIN_VSA_SHIFT(vert & 0x3ff) |
+ DSIM_MAIN_HSA_SHIFT(hori));
+
+ writel(reg, dsim->reg_base + EXYNOS_DSIM_MSYNC);
+}
+
+void exynos_mipi_dsi_set_sub_disp_resol(struct mipi_dsim_device *dsim,
+ unsigned int vert, unsigned int hori)
+{
+ unsigned int reg;
+
+ reg = (readl(dsim->reg_base + EXYNOS_DSIM_SDRESOL)) &
+ ~(DSIM_SUB_STANDY_MASK);
+
+ writel(reg, dsim->reg_base + EXYNOS_DSIM_SDRESOL);
+
+ reg &= ~(DSIM_SUB_VRESOL_MASK) | ~(DSIM_SUB_HRESOL_MASK);
+ reg |= (DSIM_SUB_VRESOL_SHIFT(vert & 0x7ff) |
+ DSIM_SUB_HRESOL_SHIFT(hori & 0x7ff));
+ writel(reg, dsim->reg_base + EXYNOS_DSIM_SDRESOL);
+
+ reg |= DSIM_SUB_STANDY_SHIFT(1);
+ writel(reg, dsim->reg_base + EXYNOS_DSIM_SDRESOL);
+}
+
+void exynos_mipi_dsi_init_config(struct mipi_dsim_device *dsim)
+{
+ struct mipi_dsim_config *dsim_config = dsim->dsim_config;
+
+ unsigned int cfg = (readl(dsim->reg_base + EXYNOS_DSIM_CONFIG)) &
+ ~((1 << 28) | (0x1f << 20) | (0x3 << 5));
+
+ cfg = ((DSIM_AUTO_FLUSH(dsim_config->auto_flush)) |
+ (DSIM_EOT_DISABLE(dsim_config->eot_disable)) |
+ (DSIM_AUTO_MODE_SHIFT(dsim_config->auto_vertical_cnt)) |
+ (DSIM_HSE_MODE_SHIFT(dsim_config->hse)) |
+ (DSIM_HFP_MODE_SHIFT(dsim_config->hfp)) |
+ (DSIM_HBP_MODE_SHIFT(dsim_config->hbp)) |
+ (DSIM_HSA_MODE_SHIFT(dsim_config->hsa)) |
+ (DSIM_NUM_OF_DATALANE_SHIFT(dsim_config->e_no_data_lane)));
+
+ writel(cfg, dsim->reg_base + EXYNOS_DSIM_CONFIG);
+}
+
+void exynos_mipi_dsi_display_config(struct mipi_dsim_device *dsim,
+ struct mipi_dsim_config *dsim_config)
+{
+ u32 reg = (readl(dsim->reg_base + EXYNOS_DSIM_CONFIG)) &
+ ~((0x3 << 26) | (1 << 25) | (0x3 << 18) | (0x7 << 12) |
+ (0x3 << 16) | (0x7 << 8));
+
+ if (dsim_config->e_interface == DSIM_VIDEO)
+ reg |= (1 << 25);
+ else if (dsim_config->e_interface == DSIM_COMMAND)
+ reg &= ~(1 << 25);
+ else {
+ dev_err(dsim->dev, "unknown lcd type.\n");
+ return;
+ }
+
+ /* main lcd */
+ reg |= ((u8) (dsim_config->e_burst_mode) & 0x3) << 26 |
+ ((u8) (dsim_config->e_virtual_ch) & 0x3) << 18 |
+ ((u8) (dsim_config->e_pixel_format) & 0x7) << 12;
+
+ writel(reg, dsim->reg_base + EXYNOS_DSIM_CONFIG);
+}
+
+void exynos_mipi_dsi_enable_lane(struct mipi_dsim_device *dsim, unsigned int lane,
+ unsigned int enable)
+{
+ unsigned int reg;
+
+ reg = readl(dsim->reg_base + EXYNOS_DSIM_CONFIG);
+
+ if (enable)
+ reg |= DSIM_LANE_ENx(lane);
+ else
+ reg &= ~DSIM_LANE_ENx(lane);
+
+ writel(reg, dsim->reg_base + EXYNOS_DSIM_CONFIG);
+}
+
+
+void exynos_mipi_dsi_set_data_lane_number(struct mipi_dsim_device *dsim,
+ unsigned int count)
+{
+ unsigned int cfg;
+
+ /* get the data lane number. */
+ cfg = DSIM_NUM_OF_DATALANE_SHIFT(count);
+
+ writel(cfg, dsim->reg_base + EXYNOS_DSIM_CONFIG);
+}
+
+void exynos_mipi_dsi_enable_afc(struct mipi_dsim_device *dsim, unsigned int enable,
+ unsigned int afc_code)
+{
+ unsigned int reg = readl(dsim->reg_base + EXYNOS_DSIM_PHYACCHR);
+
+ if (enable) {
+ reg |= (1 << 14);
+ reg &= ~(0x7 << 5);
+ reg |= (afc_code & 0x7) << 5;
+ } else
+ reg &= ~(1 << 14);
+
+ writel(reg, dsim->reg_base + EXYNOS_DSIM_PHYACCHR);
+}
+
+void exynos_mipi_dsi_enable_pll_bypass(struct mipi_dsim_device *dsim,
+ unsigned int enable)
+{
+ unsigned int reg = (readl(dsim->reg_base + EXYNOS_DSIM_CLKCTRL)) &
+ ~(DSIM_PLL_BYPASS_SHIFT(0x1));
+
+ reg |= DSIM_PLL_BYPASS_SHIFT(enable);
+
+ writel(reg, dsim->reg_base + EXYNOS_DSIM_CLKCTRL);
+}
+
+void exynos_mipi_dsi_set_pll_pms(struct mipi_dsim_device *dsim, unsigned int p,
+ unsigned int m, unsigned int s)
+{
+ unsigned int reg = readl(dsim->reg_base + EXYNOS_DSIM_PLLCTRL);
+
+ reg |= ((p & 0x3f) << 13) | ((m & 0x1ff) << 4) | ((s & 0x7) << 1);
+
+ writel(reg, dsim->reg_base + EXYNOS_DSIM_PLLCTRL);
+}
+
+void exynos_mipi_dsi_pll_freq_band(struct mipi_dsim_device *dsim,
+ unsigned int freq_band)
+{
+ unsigned int reg = (readl(dsim->reg_base + EXYNOS_DSIM_PLLCTRL)) &
+ ~(DSIM_FREQ_BAND_SHIFT(0x1f));
+
+ reg |= DSIM_FREQ_BAND_SHIFT(freq_band & 0x1f);
+
+ writel(reg, dsim->reg_base + EXYNOS_DSIM_PLLCTRL);
+}
+
+void exynos_mipi_dsi_pll_freq(struct mipi_dsim_device *dsim,
+ unsigned int pre_divider, unsigned int main_divider,
+ unsigned int scaler)
+{
+ unsigned int reg = (readl(dsim->reg_base + EXYNOS_DSIM_PLLCTRL)) &
+ ~(0x7ffff << 1);
+
+ reg |= (pre_divider & 0x3f) << 13 | (main_divider & 0x1ff) << 4 |
+ (scaler & 0x7) << 1;
+
+ writel(reg, dsim->reg_base + EXYNOS_DSIM_PLLCTRL);
+}
+
+void exynos_mipi_dsi_pll_stable_time(struct mipi_dsim_device *dsim,
+ unsigned int lock_time)
+{
+ writel(lock_time, dsim->reg_base + EXYNOS_DSIM_PLLTMR);
+}
+
+void exynos_mipi_dsi_enable_pll(struct mipi_dsim_device *dsim, unsigned int enable)
+{
+ unsigned int reg = (readl(dsim->reg_base + EXYNOS_DSIM_PLLCTRL)) &
+ ~(DSIM_PLL_EN_SHIFT(0x1));
+
+ reg |= DSIM_PLL_EN_SHIFT(enable & 0x1);
+
+ writel(reg, dsim->reg_base + EXYNOS_DSIM_PLLCTRL);
+}
+
+void exynos_mipi_dsi_set_byte_clock_src(struct mipi_dsim_device *dsim,
+ unsigned int src)
+{
+ unsigned int reg = (readl(dsim->reg_base + EXYNOS_DSIM_CLKCTRL)) &
+ ~(DSIM_BYTE_CLK_SRC_SHIFT(0x3));
+
+ reg |= (DSIM_BYTE_CLK_SRC_SHIFT(src));
+
+ writel(reg, dsim->reg_base + EXYNOS_DSIM_CLKCTRL);
+}
+
+void exynos_mipi_dsi_enable_byte_clock(struct mipi_dsim_device *dsim,
+ unsigned int enable)
+{
+ unsigned int reg = (readl(dsim->reg_base + EXYNOS_DSIM_CLKCTRL)) &
+ ~(DSIM_BYTE_CLKEN_SHIFT(0x1));
+
+ reg |= DSIM_BYTE_CLKEN_SHIFT(enable);
+
+ writel(reg, dsim->reg_base + EXYNOS_DSIM_CLKCTRL);
+}
+
+void exynos_mipi_dsi_set_esc_clk_prs(struct mipi_dsim_device *dsim,
+ unsigned int enable, unsigned int prs_val)
+{
+ unsigned int reg = (readl(dsim->reg_base + EXYNOS_DSIM_CLKCTRL)) &
+ ~(DSIM_ESC_CLKEN_SHIFT(0x1) | 0xffff);
+
+ reg |= DSIM_ESC_CLKEN_SHIFT(enable);
+ if (enable)
+ reg |= prs_val;
+
+ writel(reg, dsim->reg_base + EXYNOS_DSIM_CLKCTRL);
+}
+
+void exynos_mipi_dsi_enable_esc_clk_on_lane(struct mipi_dsim_device *dsim,
+ unsigned int lane_sel, unsigned int enable)
+{
+ unsigned int reg = readl(dsim->reg_base + EXYNOS_DSIM_CLKCTRL);
+
+ if (enable)
+ reg |= DSIM_LANE_ESC_CLKEN(lane_sel);
+ else
+
+ reg &= ~DSIM_LANE_ESC_CLKEN(lane_sel);
+
+ writel(reg, dsim->reg_base + EXYNOS_DSIM_CLKCTRL);
+}
+
+void exynos_mipi_dsi_force_dphy_stop_state(struct mipi_dsim_device *dsim,
+ unsigned int enable)
+{
+ unsigned int reg = (readl(dsim->reg_base + EXYNOS_DSIM_ESCMODE)) &
+ ~(DSIM_FORCE_STOP_STATE_SHIFT(0x1));
+
+ reg |= (DSIM_FORCE_STOP_STATE_SHIFT(enable & 0x1));
+
+ writel(reg, dsim->reg_base + EXYNOS_DSIM_ESCMODE);
+}
+
+unsigned int exynos_mipi_dsi_is_lane_state(struct mipi_dsim_device *dsim)
+{
+ unsigned int reg = readl(dsim->reg_base + EXYNOS_DSIM_STATUS);
+
+ /**
+ * check clock and data lane states.
+ * if MIPI-DSI controller was enabled at bootloader then
+ * TX_READY_HS_CLK is enabled otherwise STOP_STATE_CLK.
+ * so it should be checked for two case.
+ */
+ if ((reg & DSIM_STOP_STATE_DAT(0xf)) &&
+ ((reg & DSIM_STOP_STATE_CLK) ||
+ (reg & DSIM_TX_READY_HS_CLK)))
+ return 1;
+
+ return 0;
+}
+
+void exynos_mipi_dsi_set_stop_state_counter(struct mipi_dsim_device *dsim,
+ unsigned int cnt_val)
+{
+ unsigned int reg = (readl(dsim->reg_base + EXYNOS_DSIM_ESCMODE)) &
+ ~(DSIM_STOP_STATE_CNT_SHIFT(0x7ff));
+
+ reg |= (DSIM_STOP_STATE_CNT_SHIFT(cnt_val & 0x7ff));
+
+ writel(reg, dsim->reg_base + EXYNOS_DSIM_ESCMODE);
+}
+
+void exynos_mipi_dsi_set_bta_timeout(struct mipi_dsim_device *dsim,
+ unsigned int timeout)
+{
+ unsigned int reg = (readl(dsim->reg_base + EXYNOS_DSIM_TIMEOUT)) &
+ ~(DSIM_BTA_TOUT_SHIFT(0xff));
+
+ reg |= (DSIM_BTA_TOUT_SHIFT(timeout));
+
+ writel(reg, dsim->reg_base + EXYNOS_DSIM_TIMEOUT);
+}
+
+void exynos_mipi_dsi_set_lpdr_timeout(struct mipi_dsim_device *dsim,
+ unsigned int timeout)
+{
+ unsigned int reg = (readl(dsim->reg_base + EXYNOS_DSIM_TIMEOUT)) &
+ ~(DSIM_LPDR_TOUT_SHIFT(0xffff));
+
+ reg |= (DSIM_LPDR_TOUT_SHIFT(timeout));
+
+ writel(reg, dsim->reg_base + EXYNOS_DSIM_TIMEOUT);
+}
+
+void exynos_mipi_dsi_set_cpu_transfer_mode(struct mipi_dsim_device *dsim,
+ unsigned int lp)
+{
+ unsigned int reg = readl(dsim->reg_base + EXYNOS_DSIM_ESCMODE);
+
+ reg &= ~DSIM_CMD_LPDT_LP;
+
+ if (lp)
+ reg |= DSIM_CMD_LPDT_LP;
+
+ writel(reg, dsim->reg_base + EXYNOS_DSIM_ESCMODE);
+}
+
+void exynos_mipi_dsi_set_lcdc_transfer_mode(struct mipi_dsim_device *dsim,
+ unsigned int lp)
+{
+ unsigned int reg = readl(dsim->reg_base + EXYNOS_DSIM_ESCMODE);
+
+ reg &= ~DSIM_TX_LPDT_LP;
+
+ if (lp)
+ reg |= DSIM_TX_LPDT_LP;
+
+ writel(reg, dsim->reg_base + EXYNOS_DSIM_ESCMODE);
+}
+
+void exynos_mipi_dsi_enable_hs_clock(struct mipi_dsim_device *dsim,
+ unsigned int enable)
+{
+ unsigned int reg = (readl(dsim->reg_base + EXYNOS_DSIM_CLKCTRL)) &
+ ~(DSIM_TX_REQUEST_HSCLK_SHIFT(0x1));
+
+ reg |= DSIM_TX_REQUEST_HSCLK_SHIFT(enable);
+
+ writel(reg, dsim->reg_base + EXYNOS_DSIM_CLKCTRL);
+}
+
+void exynos_mipi_dsi_dp_dn_swap(struct mipi_dsim_device *dsim,
+ unsigned int swap_en)
+{
+ unsigned int reg = readl(dsim->reg_base + EXYNOS_DSIM_PHYACCHR1);
+
+ reg &= ~(0x3 << 0);
+ reg |= (swap_en & 0x3) << 0;
+
+ writel(reg, dsim->reg_base + EXYNOS_DSIM_PHYACCHR1);
+}
+
+void exynos_mipi_dsi_hs_zero_ctrl(struct mipi_dsim_device *dsim,
+ unsigned int hs_zero)
+{
+ unsigned int reg = (readl(dsim->reg_base + EXYNOS_DSIM_PLLCTRL)) &
+ ~(0xf << 28);
+
+ reg |= ((hs_zero & 0xf) << 28);
+
+ writel(reg, dsim->reg_base + EXYNOS_DSIM_PLLCTRL);
+}
+
+void exynos_mipi_dsi_prep_ctrl(struct mipi_dsim_device *dsim, unsigned int prep)
+{
+ unsigned int reg = (readl(dsim->reg_base + EXYNOS_DSIM_PLLCTRL)) &
+ ~(0x7 << 20);
+
+ reg |= ((prep & 0x7) << 20);
+
+ writel(reg, dsim->reg_base + EXYNOS_DSIM_PLLCTRL);
+}
+
+unsigned int exynos_mipi_dsi_read_interrupt(struct mipi_dsim_device *dsim)
+{
+ return readl(dsim->reg_base + EXYNOS_DSIM_INTSRC);
+}
+
+void exynos_mipi_dsi_clear_interrupt(struct mipi_dsim_device *dsim,
+ unsigned int src)
+{
+ unsigned int reg = readl(dsim->reg_base + EXYNOS_DSIM_INTSRC);
+
+ reg |= src;
+
+ writel(reg, dsim->reg_base + EXYNOS_DSIM_INTSRC);
+}
+
+void exynos_mipi_dsi_set_interrupt(struct mipi_dsim_device *dsim,
+ unsigned int src, unsigned int enable)
+{
+ unsigned int reg = 0;
+
+ if (enable)
+ reg |= src;
+ else
+ reg &= ~src;
+
+ writel(reg, dsim->reg_base + EXYNOS_DSIM_INTSRC);
+}
+
+unsigned int exynos_mipi_dsi_is_pll_stable(struct mipi_dsim_device *dsim)
+{
+ unsigned int reg;
+
+ reg = readl(dsim->reg_base + EXYNOS_DSIM_STATUS);
+
+ return reg & (1 << 31) ? 1 : 0;
+}
+
+unsigned int exynos_mipi_dsi_get_fifo_state(struct mipi_dsim_device *dsim)
+{
+ return readl(dsim->reg_base + EXYNOS_DSIM_FIFOCTRL) & ~(0x1f);
+}
+
+void exynos_mipi_dsi_wr_tx_header(struct mipi_dsim_device *dsim,
+ unsigned int di, unsigned int data0, unsigned int data1)
+{
+ unsigned int reg = (data1 << 16) | (data0 << 8) | ((di & 0x3f) << 0);
+
+ writel(reg, dsim->reg_base + EXYNOS_DSIM_PKTHDR);
+}
+
+void exynos_mipi_dsi_rd_tx_header(struct mipi_dsim_device *dsim,
+ unsigned int di, unsigned int data0)
+{
+ unsigned int reg = (data0 << 8) | (di << 0);
+
+ writel(reg, dsim->reg_base + EXYNOS_DSIM_PKTHDR);
+}
+
+unsigned int exynos_mipi_dsi_rd_rx_fifo(struct mipi_dsim_device *dsim)
+{
+ return readl(dsim->reg_base + EXYNOS_DSIM_RXFIFO);
+}
+
+unsigned int _exynos_mipi_dsi_get_frame_done_status(struct mipi_dsim_device *dsim)
+{
+ unsigned int reg = readl(dsim->reg_base + EXYNOS_DSIM_INTSRC);
+
+ return (reg & INTSRC_FRAME_DONE) ? 1 : 0;
+}
+
+void _exynos_mipi_dsi_clear_frame_done(struct mipi_dsim_device *dsim)
+{
+ unsigned int reg = readl(dsim->reg_base + EXYNOS_DSIM_INTSRC);
+
+ writel(reg | INTSRC_FRAME_DONE, dsim->reg_base +
+ EXYNOS_DSIM_INTSRC);
+}
+
+void exynos_mipi_dsi_wr_tx_data(struct mipi_dsim_device *dsim,
+ unsigned int tx_data)
+{
+ writel(tx_data, dsim->reg_base + EXYNOS_DSIM_PAYLOAD);
+}
diff --git a/kernel/drivers/video/fbdev/exynos/exynos_mipi_dsi_lowlevel.h b/kernel/drivers/video/fbdev/exynos/exynos_mipi_dsi_lowlevel.h
new file mode 100644
index 000000000..85460701c
--- /dev/null
+++ b/kernel/drivers/video/fbdev/exynos/exynos_mipi_dsi_lowlevel.h
@@ -0,0 +1,112 @@
+/* linux/drivers/video/exynos/exynos_mipi_dsi_lowlevel.h
+ *
+ * Header file for Samsung SoC MIPI-DSI lowlevel driver.
+ *
+ * Copyright (c) 2012 Samsung Electronics Co., Ltd
+ *
+ * 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.
+*/
+
+#ifndef _EXYNOS_MIPI_DSI_LOWLEVEL_H
+#define _EXYNOS_MIPI_DSI_LOWLEVEL_H
+
+void exynos_mipi_dsi_func_reset(struct mipi_dsim_device *dsim);
+void exynos_mipi_dsi_sw_reset(struct mipi_dsim_device *dsim);
+void exynos_mipi_dsi_sw_reset_release(struct mipi_dsim_device *dsim);
+int exynos_mipi_dsi_get_sw_reset_release(struct mipi_dsim_device *dsim);
+void exynos_mipi_dsi_set_interrupt_mask(struct mipi_dsim_device *dsim,
+ unsigned int mode, unsigned int mask);
+void exynos_mipi_dsi_set_data_lane_number(struct mipi_dsim_device *dsim,
+ unsigned int count);
+void exynos_mipi_dsi_init_fifo_pointer(struct mipi_dsim_device *dsim,
+ unsigned int cfg);
+void exynos_mipi_dsi_set_phy_tunning(struct mipi_dsim_device *dsim,
+ unsigned int value);
+void exynos_mipi_dsi_set_phy_tunning(struct mipi_dsim_device *dsim,
+ unsigned int value);
+void exynos_mipi_dsi_set_main_stand_by(struct mipi_dsim_device *dsim,
+ unsigned int enable);
+void exynos_mipi_dsi_set_main_disp_resol(struct mipi_dsim_device *dsim,
+ unsigned int width_resol, unsigned int height_resol);
+void exynos_mipi_dsi_set_main_disp_vporch(struct mipi_dsim_device *dsim,
+ unsigned int cmd_allow, unsigned int vfront, unsigned int vback);
+void exynos_mipi_dsi_set_main_disp_hporch(struct mipi_dsim_device *dsim,
+ unsigned int front, unsigned int back);
+void exynos_mipi_dsi_set_main_disp_sync_area(struct mipi_dsim_device *dsim,
+ unsigned int vert, unsigned int hori);
+void exynos_mipi_dsi_set_sub_disp_resol(struct mipi_dsim_device *dsim,
+ unsigned int vert, unsigned int hori);
+void exynos_mipi_dsi_init_config(struct mipi_dsim_device *dsim);
+void exynos_mipi_dsi_display_config(struct mipi_dsim_device *dsim,
+ struct mipi_dsim_config *dsim_config);
+void exynos_mipi_dsi_set_data_lane_number(struct mipi_dsim_device *dsim,
+ unsigned int count);
+void exynos_mipi_dsi_enable_lane(struct mipi_dsim_device *dsim, unsigned int lane,
+ unsigned int enable);
+void exynos_mipi_dsi_enable_afc(struct mipi_dsim_device *dsim, unsigned int enable,
+ unsigned int afc_code);
+void exynos_mipi_dsi_enable_pll_bypass(struct mipi_dsim_device *dsim,
+ unsigned int enable);
+void exynos_mipi_dsi_set_pll_pms(struct mipi_dsim_device *dsim, unsigned int p,
+ unsigned int m, unsigned int s);
+void exynos_mipi_dsi_pll_freq_band(struct mipi_dsim_device *dsim,
+ unsigned int freq_band);
+void exynos_mipi_dsi_pll_freq(struct mipi_dsim_device *dsim,
+ unsigned int pre_divider, unsigned int main_divider,
+ unsigned int scaler);
+void exynos_mipi_dsi_pll_stable_time(struct mipi_dsim_device *dsim,
+ unsigned int lock_time);
+void exynos_mipi_dsi_enable_pll(struct mipi_dsim_device *dsim,
+ unsigned int enable);
+void exynos_mipi_dsi_set_byte_clock_src(struct mipi_dsim_device *dsim,
+ unsigned int src);
+void exynos_mipi_dsi_enable_byte_clock(struct mipi_dsim_device *dsim,
+ unsigned int enable);
+void exynos_mipi_dsi_set_esc_clk_prs(struct mipi_dsim_device *dsim,
+ unsigned int enable, unsigned int prs_val);
+void exynos_mipi_dsi_enable_esc_clk_on_lane(struct mipi_dsim_device *dsim,
+ unsigned int lane_sel, unsigned int enable);
+void exynos_mipi_dsi_force_dphy_stop_state(struct mipi_dsim_device *dsim,
+ unsigned int enable);
+unsigned int exynos_mipi_dsi_is_lane_state(struct mipi_dsim_device *dsim);
+void exynos_mipi_dsi_set_stop_state_counter(struct mipi_dsim_device *dsim,
+ unsigned int cnt_val);
+void exynos_mipi_dsi_set_bta_timeout(struct mipi_dsim_device *dsim,
+ unsigned int timeout);
+void exynos_mipi_dsi_set_lpdr_timeout(struct mipi_dsim_device *dsim,
+ unsigned int timeout);
+void exynos_mipi_dsi_set_lcdc_transfer_mode(struct mipi_dsim_device *dsim,
+ unsigned int lp);
+void exynos_mipi_dsi_set_cpu_transfer_mode(struct mipi_dsim_device *dsim,
+ unsigned int lp);
+void exynos_mipi_dsi_enable_hs_clock(struct mipi_dsim_device *dsim,
+ unsigned int enable);
+void exynos_mipi_dsi_dp_dn_swap(struct mipi_dsim_device *dsim,
+ unsigned int swap_en);
+void exynos_mipi_dsi_hs_zero_ctrl(struct mipi_dsim_device *dsim,
+ unsigned int hs_zero);
+void exynos_mipi_dsi_prep_ctrl(struct mipi_dsim_device *dsim, unsigned int prep);
+unsigned int exynos_mipi_dsi_read_interrupt(struct mipi_dsim_device *dsim);
+unsigned int exynos_mipi_dsi_read_interrupt_mask(struct mipi_dsim_device *dsim);
+void exynos_mipi_dsi_clear_interrupt(struct mipi_dsim_device *dsim,
+ unsigned int src);
+void exynos_mipi_dsi_set_interrupt(struct mipi_dsim_device *dsim,
+ unsigned int src, unsigned int enable);
+unsigned int exynos_mipi_dsi_is_pll_stable(struct mipi_dsim_device *dsim);
+unsigned int exynos_mipi_dsi_get_fifo_state(struct mipi_dsim_device *dsim);
+unsigned int _exynos_mipi_dsi_get_frame_done_status(struct mipi_dsim_device *dsim);
+void _exynos_mipi_dsi_clear_frame_done(struct mipi_dsim_device *dsim);
+void exynos_mipi_dsi_wr_tx_header(struct mipi_dsim_device *dsim, unsigned int di,
+ unsigned int data0, unsigned int data1);
+void exynos_mipi_dsi_wr_tx_data(struct mipi_dsim_device *dsim,
+ unsigned int tx_data);
+void exynos_mipi_dsi_rd_tx_header(struct mipi_dsim_device *dsim,
+ unsigned int data0, unsigned int data1);
+unsigned int exynos_mipi_dsi_rd_rx_fifo(struct mipi_dsim_device *dsim);
+
+#endif /* _EXYNOS_MIPI_DSI_LOWLEVEL_H */
diff --git a/kernel/drivers/video/fbdev/exynos/exynos_mipi_dsi_regs.h b/kernel/drivers/video/fbdev/exynos/exynos_mipi_dsi_regs.h
new file mode 100644
index 000000000..4227106d3
--- /dev/null
+++ b/kernel/drivers/video/fbdev/exynos/exynos_mipi_dsi_regs.h
@@ -0,0 +1,149 @@
+/* linux/driver/video/exynos/exynos_mipi_dsi_regs.h
+ *
+ * Register definition file for Samsung MIPI-DSIM driver
+ *
+ * Copyright (c) 2012 Samsung Electronics Co., Ltd
+ *
+ * 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.
+*/
+
+#ifndef _EXYNOS_MIPI_DSI_REGS_H
+#define _EXYNOS_MIPI_DSI_REGS_H
+
+#define EXYNOS_DSIM_STATUS 0x0 /* Status register */
+#define EXYNOS_DSIM_SWRST 0x4 /* Software reset register */
+#define EXYNOS_DSIM_CLKCTRL 0x8 /* Clock control register */
+#define EXYNOS_DSIM_TIMEOUT 0xc /* Time out register */
+#define EXYNOS_DSIM_CONFIG 0x10 /* Configuration register */
+#define EXYNOS_DSIM_ESCMODE 0x14 /* Escape mode register */
+
+/* Main display image resolution register */
+#define EXYNOS_DSIM_MDRESOL 0x18
+#define EXYNOS_DSIM_MVPORCH 0x1c /* Main display Vporch register */
+#define EXYNOS_DSIM_MHPORCH 0x20 /* Main display Hporch register */
+#define EXYNOS_DSIM_MSYNC 0x24 /* Main display sync area register */
+
+/* Sub display image resolution register */
+#define EXYNOS_DSIM_SDRESOL 0x28
+#define EXYNOS_DSIM_INTSRC 0x2c /* Interrupt source register */
+#define EXYNOS_DSIM_INTMSK 0x30 /* Interrupt mask register */
+#define EXYNOS_DSIM_PKTHDR 0x34 /* Packet Header FIFO register */
+#define EXYNOS_DSIM_PAYLOAD 0x38 /* Payload FIFO register */
+#define EXYNOS_DSIM_RXFIFO 0x3c /* Read FIFO register */
+#define EXYNOS_DSIM_FIFOTHLD 0x40 /* FIFO threshold level register */
+#define EXYNOS_DSIM_FIFOCTRL 0x44 /* FIFO status and control register */
+
+/* FIFO memory AC characteristic register */
+#define EXYNOS_DSIM_PLLCTRL 0x4c /* PLL control register */
+#define EXYNOS_DSIM_PLLTMR 0x50 /* PLL timer register */
+#define EXYNOS_DSIM_PHYACCHR 0x54 /* D-PHY AC characteristic register */
+#define EXYNOS_DSIM_PHYACCHR1 0x58 /* D-PHY AC characteristic register1 */
+
+/* DSIM_STATUS */
+#define DSIM_STOP_STATE_DAT(x) (((x) & 0xf) << 0)
+#define DSIM_STOP_STATE_CLK (1 << 8)
+#define DSIM_TX_READY_HS_CLK (1 << 10)
+
+/* DSIM_SWRST */
+#define DSIM_FUNCRST (1 << 16)
+#define DSIM_SWRST (1 << 0)
+
+/* EXYNOS_DSIM_TIMEOUT */
+#define DSIM_LPDR_TOUT_SHIFT(x) ((x) << 0)
+#define DSIM_BTA_TOUT_SHIFT(x) ((x) << 16)
+
+/* EXYNOS_DSIM_CLKCTRL */
+#define DSIM_LANE_ESC_CLKEN(x) (((x) & 0x1f) << 19)
+#define DSIM_BYTE_CLKEN_SHIFT(x) ((x) << 24)
+#define DSIM_BYTE_CLK_SRC_SHIFT(x) ((x) << 25)
+#define DSIM_PLL_BYPASS_SHIFT(x) ((x) << 27)
+#define DSIM_ESC_CLKEN_SHIFT(x) ((x) << 28)
+#define DSIM_TX_REQUEST_HSCLK_SHIFT(x) ((x) << 31)
+
+/* EXYNOS_DSIM_CONFIG */
+#define DSIM_LANE_ENx(x) (((x) & 0x1f) << 0)
+#define DSIM_NUM_OF_DATALANE_SHIFT(x) ((x) << 5)
+#define DSIM_HSA_MODE_SHIFT(x) ((x) << 20)
+#define DSIM_HBP_MODE_SHIFT(x) ((x) << 21)
+#define DSIM_HFP_MODE_SHIFT(x) ((x) << 22)
+#define DSIM_HSE_MODE_SHIFT(x) ((x) << 23)
+#define DSIM_AUTO_MODE_SHIFT(x) ((x) << 24)
+#define DSIM_EOT_DISABLE(x) ((x) << 28)
+#define DSIM_AUTO_FLUSH(x) ((x) << 29)
+
+#define DSIM_NUM_OF_DATA_LANE(x) ((x) << DSIM_NUM_OF_DATALANE_SHIFT)
+
+/* EXYNOS_DSIM_ESCMODE */
+#define DSIM_TX_LPDT_LP (1 << 6)
+#define DSIM_CMD_LPDT_LP (1 << 7)
+#define DSIM_FORCE_STOP_STATE_SHIFT(x) ((x) << 20)
+#define DSIM_STOP_STATE_CNT_SHIFT(x) ((x) << 21)
+
+/* EXYNOS_DSIM_MDRESOL */
+#define DSIM_MAIN_STAND_BY (1 << 31)
+#define DSIM_MAIN_VRESOL(x) (((x) & 0x7ff) << 16)
+#define DSIM_MAIN_HRESOL(x) (((x) & 0X7ff) << 0)
+
+/* EXYNOS_DSIM_MVPORCH */
+#define DSIM_CMD_ALLOW_SHIFT(x) ((x) << 28)
+#define DSIM_STABLE_VFP_SHIFT(x) ((x) << 16)
+#define DSIM_MAIN_VBP_SHIFT(x) ((x) << 0)
+#define DSIM_CMD_ALLOW_MASK (0xf << 28)
+#define DSIM_STABLE_VFP_MASK (0x7ff << 16)
+#define DSIM_MAIN_VBP_MASK (0x7ff << 0)
+
+/* EXYNOS_DSIM_MHPORCH */
+#define DSIM_MAIN_HFP_SHIFT(x) ((x) << 16)
+#define DSIM_MAIN_HBP_SHIFT(x) ((x) << 0)
+#define DSIM_MAIN_HFP_MASK ((0xffff) << 16)
+#define DSIM_MAIN_HBP_MASK ((0xffff) << 0)
+
+/* EXYNOS_DSIM_MSYNC */
+#define DSIM_MAIN_VSA_SHIFT(x) ((x) << 22)
+#define DSIM_MAIN_HSA_SHIFT(x) ((x) << 0)
+#define DSIM_MAIN_VSA_MASK ((0x3ff) << 22)
+#define DSIM_MAIN_HSA_MASK ((0xffff) << 0)
+
+/* EXYNOS_DSIM_SDRESOL */
+#define DSIM_SUB_STANDY_SHIFT(x) ((x) << 31)
+#define DSIM_SUB_VRESOL_SHIFT(x) ((x) << 16)
+#define DSIM_SUB_HRESOL_SHIFT(x) ((x) << 0)
+#define DSIM_SUB_STANDY_MASK ((0x1) << 31)
+#define DSIM_SUB_VRESOL_MASK ((0x7ff) << 16)
+#define DSIM_SUB_HRESOL_MASK ((0x7ff) << 0)
+
+/* EXYNOS_DSIM_INTSRC */
+#define INTSRC_PLL_STABLE (1 << 31)
+#define INTSRC_SW_RST_RELEASE (1 << 30)
+#define INTSRC_SFR_FIFO_EMPTY (1 << 29)
+#define INTSRC_FRAME_DONE (1 << 24)
+#define INTSRC_RX_DATA_DONE (1 << 18)
+
+/* EXYNOS_DSIM_INTMSK */
+#define INTMSK_FIFO_EMPTY (1 << 29)
+#define INTMSK_BTA (1 << 25)
+#define INTMSK_FRAME_DONE (1 << 24)
+#define INTMSK_RX_TIMEOUT (1 << 21)
+#define INTMSK_BTA_TIMEOUT (1 << 20)
+#define INTMSK_RX_DONE (1 << 18)
+#define INTMSK_RX_TE (1 << 17)
+#define INTMSK_RX_ACK (1 << 16)
+#define INTMSK_RX_ECC_ERR (1 << 15)
+#define INTMSK_RX_CRC_ERR (1 << 14)
+
+/* EXYNOS_DSIM_FIFOCTRL */
+#define SFR_HEADER_EMPTY (1 << 22)
+
+/* EXYNOS_DSIM_PHYACCHR */
+#define DSIM_AFC_CTL(x) (((x) & 0x7) << 5)
+
+/* EXYNOS_DSIM_PLLCTRL */
+#define DSIM_PLL_EN_SHIFT(x) ((x) << 23)
+#define DSIM_FREQ_BAND_SHIFT(x) ((x) << 24)
+
+#endif /* _EXYNOS_MIPI_DSI_REGS_H */
diff --git a/kernel/drivers/video/fbdev/exynos/s6e8ax0.c b/kernel/drivers/video/fbdev/exynos/s6e8ax0.c
new file mode 100644
index 000000000..95873f26e
--- /dev/null
+++ b/kernel/drivers/video/fbdev/exynos/s6e8ax0.c
@@ -0,0 +1,892 @@
+/* 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");