video: fbdev: exynos: Remove old non-working MIPI driver

The old non-DRM Exynos MIPI driver does not support DeviceTree and
requires board files.  Our platforms do not provide such so the driver
is not usable since a long time ago.  All features provided by the
driver (and associated s6e8ax0 panel driver) are already supported by
newer DRM version so the old code can be removed.

Cc: Inki Dae <inki.dae@samsung.com>
Cc: Donghwa Lee <dh09.lee@samsung.com>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

11 files changed, 0 insertions, 3310 deletions

diff --git a/drivers/video/fbdev/Kconfig b/drivers/video/fbdev/Kconfig
index 6c28ecc3958c..af2f117208f1 100644
--- a/drivers/video/fbdev/Kconfig
+++ b/drivers/video/fbdev/Kconfig
@@ -2447,7 +2447,6 @@ config FB_SIMPLE
 
 source "drivers/video/fbdev/omap/Kconfig"
 source "drivers/video/fbdev/omap2/Kconfig"
-source "drivers/video/fbdev/exynos/Kconfig"
 source "drivers/video/fbdev/mmp/Kconfig"
 
 config FB_SH_MOBILE_MERAM
diff --git a/drivers/video/fbdev/Makefile b/drivers/video/fbdev/Makefile
index 5550944f0ad7..ee8c81405a7f 100644
--- a/drivers/video/fbdev/Makefile
+++ b/drivers/video/fbdev/Makefile
@@ -6,8 +6,6 @@
 
 obj-y				+= core/
 
-obj-$(CONFIG_EXYNOS_VIDEO)     += exynos/
-
 obj-$(CONFIG_FB_MACMODES)      += macmodes.o
 obj-$(CONFIG_FB_WMT_GE_ROPS)   += wmt_ge_rops.o
 
diff --git a/drivers/video/fbdev/exynos/Kconfig b/drivers/video/fbdev/exynos/Kconfig
deleted file mode 100644
index d916bef94f25..000000000000
--- a/drivers/video/fbdev/exynos/Kconfig
+++ /dev/null
@@ -1,32 +0,0 @@
-#
-# Exynos Video configuration
-#
-
-menuconfig EXYNOS_VIDEO
-	tristate "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
-	tristate "EXYNOS MIPI DSI driver support."
-	select GENERIC_PHY
-	help
-	  This enables support for MIPI-DSI device.
-
-config EXYNOS_LCD_S6E8AX0
-	tristate "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/drivers/video/fbdev/exynos/Makefile b/drivers/video/fbdev/exynos/Makefile
deleted file mode 100644
index 02d8dc522fea..000000000000
--- a/drivers/video/fbdev/exynos/Makefile
+++ /dev/null
@@ -1,9 +0,0 @@
-#
-# Makefile for the exynos video drivers.
-#
-
-obj-$(CONFIG_EXYNOS_MIPI_DSI)		+= exynos-mipi-dsi-mod.o
-
-exynos-mipi-dsi-mod-objs		+= exynos_mipi_dsi.o exynos_mipi_dsi_common.o \
-					   exynos_mipi_dsi_lowlevel.o
-obj-$(CONFIG_EXYNOS_LCD_S6E8AX0)	+= s6e8ax0.o
diff --git a/drivers/video/fbdev/exynos/exynos_mipi_dsi.c b/drivers/video/fbdev/exynos/exynos_mipi_dsi.c
deleted file mode 100644
index 92e4af3caaf8..000000000000
--- a/drivers/video/fbdev/exynos/exynos_mipi_dsi.c
+++ /dev/null
@@ -1,574 +0,0 @@
-/* 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;
-
-}
-EXPORT_SYMBOL_GPL(exynos_mipi_dsi_register_lcd_driver);
-
-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;
-	}
-
-	ret = platform_get_irq(pdev, 0);
-	if (ret < 0) {
-		dev_err(&pdev->dev, "failed to request dsim irq resource\n");
-		goto error;
-	}
-	dsim->irq = ret;
-
-	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/drivers/video/fbdev/exynos/exynos_mipi_dsi_common.c b/drivers/video/fbdev/exynos/exynos_mipi_dsi_common.c
deleted file mode 100644
index 2358a2fbbbcd..000000000000
--- a/drivers/video/fbdev/exynos/exynos_mipi_dsi_common.c
+++ /dev/null
@@ -1,880 +0,0 @@
-/* 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