ARM: S5PV210: Add MIPI-DSI support.

CPU interface needs cs, wr setup, wr act and hold delay. I added some members for them to common framework.

Signed-off-by InKi Dae <inki.dae at samsung.com <mailto:[email protected]>>

Signed-off-by Kyungmin Park <[email protected]

<mailto:[email protected]>>

Hello all,

This patch is for MIPI-DSI controller based on S5PV210 (or S5PC110).

LCD Panel can use following interfaces,
- RGB or CPU Interface.
- RGB or CPU Interface based on MIPI-DSI.

In case of small size lcd panel, it was ok only rgb or cpu interface not using mipi controller.
But big size panel(more then 480x800) needs MIPI-DSI Interface or other hardwares like LVDS

this patch addes MIPI-DSI Driver.

to use this driver, some structures below should be added to machine specific file.

struct dsim_config
- define clock info, data lane count and video mode info for MIPI-DSI Controller.

struct dsim_lcd_config
- define interface mode, channel ID, Pixel format and so on.

struct s5p_platform_dsim
- define callbacks for initializing D-PHY, MIPI reset and trigger releated interfaces of s3c-fb.c file.

Signed-off-by InKi Dae <inki.dae at samsung.com <mailto:[email protected]>>

Signed-off-by Kyungmin Park <[email protected]

<mailto:[email protected]>>
---

arch/arm/mach-s5pv210/include/mach/regs-clock.h +1 -0

index 2a25ab4..f716678 100644
@@ -162,6 +162,7 @@
 
 /* MIPI */
 #define S5P_MIPI_DPHY_EN		(3)
+#define S5P_MIPI_M_RESETN		(1 << 1)
 
 /* S5P_DAC_CONTROL */
 #define S5P_DAC_ENABLE			(1)

arch/arm/plat-samsung/Makefile +3 -0

index b1d82cc..3cd43f2 100644
@@ -49,6 +49,9 @@ obj-$(CONFIG_S3C_DEV_RTC)	+= dev-rtc.o
 obj-$(CONFIG_SAMSUNG_DEV_ADC)	+= dev-adc.o
 obj-$(CONFIG_SAMSUNG_DEV_TS)	+= dev-ts.o
 
+# Device setup - MIPI-DSI
+obj-$(CONFIG_S5P_MIPI_DSI)  += setup-dsim.o
+
 # DMA support
 
 obj-$(CONFIG_S3C_DMA)		+= dma.o

arch/arm/plat-samsung/include/plat/dsim.h new file +0 -0

new file mode 100644
index 0000000..28bc595

arch/arm/plat-samsung/include/plat/regs-dsim.h new file +23 -0

+/* S5P_DSIM_TIMEOUT */
+#define DSIM_LPDR_TOUT_SHIFT	(0)
+#define DSIM_BTA_TOUT_SHIFT	(16)
+#define DSIM_LPDR_TOUT(x)	(((x) & 0xffff) << DSIM_LPDR_TOUT_SHIFT)
+#define DSIM_BTA_TOUT(x)	(((x) & 0xff) << DSIM_BTA_TOUT_SHIFT)
+
+/* S5P_DSIM_CLKCTRL */
+#define DSIM_ESC_PRESCALER_SHIFT	(0)
+#define DSIM_LANE_ESC_CLKEN_SHIFT	(19)
+#define DSIM_BYTE_CLKEN_SHIFT		(24)
+#define DSIM_BYTE_CLK_SRC_SHIFT		(25)
+#define DSIM_PLL_BYPASS_SHIFT		(27)
+#define DSIM_ESC_CLKEN_SHIFT		(28)
+#define DSIM_TX_REQUEST_HSCLK_SHIFT	(31)
+#define DSIM_ESC_PRESCALER(x)		(((x) & 0xffff) << \
+						DSIM_ESC_PRESCALER_SHIFT)
+#define DSIM_LANE_ESC_CLKEN(x)		(((x) & 0x1f) << \
+						DSIM_LANE_ESC_CLKEN_SHIFT)
+#define DSIM_BYTE_CLK_ENABLE		(1 << DSIM_BYTE_CLKEN_SHIFT)
+#define DSIM_BYTE_CLK_DISABLE		(0 << DSIM_BYTE_CLKEN_SHIFT)
+#define DSIM_BYTE_CLKSRC(x)		(((x) & 0x3) << DSIM_BYTE_CLK_SRC_SHIFT)
+#define DSIM_PLL_BYPASS_PLL		(0 << DSIM_PLL_BYPASS_SHIFT)
+#define DSIM_PLL_BYPASS_EXTERNAL	(1 << DSIM_PLL_BYPASS_SHIFT)

arch/arm/plat-samsung/include/plat/regs-dsim.h new file +43 -0

+	reg |= (enable << 0);
+	writel(reg, S5P_MIPI_CONTROL);
+
+	dev_dbg(dsim->dev, "%s : %x\n", __func__, reg);
+
+	return 0;
+}
+
+static int s5p_dsim_enable_dsi_master(struct dsim_global *dsim,
+	unsigned int enable)
+{
+	unsigned int reg;
+
+	if (dsim == NULL) {
+		printk(KERN_ERR "dsim is NULL.\n");
+		return -EFAULT;
+	}
+
+	reg = (readl(S5P_MIPI_CONTROL)) & ~(1 << 2);
+	reg |= (enable << 2);
+	writel(reg, S5P_MIPI_CONTROL);
+
+	dev_dbg(dsim->dev, "%s : %x\n", __func__, reg);
+
+	return 0;
+}
+
+int s5p_dsim_part_reset(struct dsim_global *dsim)
+{
+	if (dsim == NULL) {
+		printk(KERN_ERR "dsim is NULL.\n");
+		return -EFAULT;
+	}
+
+	writel(S5P_MIPI_M_RESETN, S5P_MIPI_PHY_CON0);
+
+	dev_dbg(dsim->dev, "%s\n", __func__);
+
+	return 0;
+}
+
+int s5p_dsim_init_d_phy(struct dsim_global *dsim)
+{

arch/arm/plat-samsung/include/plat/regs-dsim.h new file +44 -0

+
+	if (IS_ERR(r_mipi_1_1v) || IS_ERR(r_mipi_1_8v)) {
+		dev_err(dsim->dev, "r_mipi_1_1v or r_mipi_1_8v is NULL.\n");
+		return -EINVAL;
+	}
+
+	if (enable) {
+		if (r_mipi_1_1v)
+			ret = regulator_enable(r_mipi_1_1v);
+
+		if (ret < 0) {
+			dev_err(dsim->dev,
+				"failed to enable regulator mipi_1_1v.\n");
+			return ret;
+		}
+
+		if (r_mipi_1_8v)
+			ret = regulator_enable(r_mipi_1_8v);
+
+		if (ret < 0) {
+			dev_err(dsim->dev,
+				"failed to enable regulator mipi_1_8v.\n");
+			return ret;
+		}
+	} else {
+		if (r_mipi_1_1v)
+			ret = regulator_force_disable(r_mipi_1_1v);
+		if (ret < 0) {
+			dev_err(dsim->dev,
+				"failed to disable regulator mipi_1_1v.\n");
+			return ret;
+		}
+
+		if (r_mipi_1_8v)
+			ret = regulator_force_disable(r_mipi_1_8v);
+		if (ret < 0) {
+			dev_err(dsim->dev,
+				"failed to disable regulator mipi_1_8v.\n");
+			return ret;
+		}
+	}
+
+	return ret;
+}

drivers/video/Kconfig +8 -1

index 3d94a14..c916ac1 100644
@@ -1930,7 +1930,7 @@ config FB_TMIO_ACCELL
 
 config FB_S3C
 	tristate "Samsung S3C framebuffer support"
-	depends on FB && ARCH_S3C64XX
+	depends on FB && (ARCH_S3C64XX || ARCH_S5PV210)
 	select FB_CFB_FILLRECT
 	select FB_CFB_COPYAREA
 	select FB_CFB_IMAGEBLIT

@@ -1975,6 +1975,13 @@ config FB_S3C2410_DEBUG
 	  Turn on debugging messages. Note that you can set/unset at run time
 	  through sysfs
 
+config S5P_MIPI_DSI
+	tristate "Samsung SoC MIPI-DSI support."
+	depends on FB_S3C && ARCH_S5PV210
+	default n
+	---help---
+	  This enables support for MIPI-DSI device.
+
 config FB_NUC900
         bool "NUC900 LCD framebuffer support"
         depends on FB && ARCH_W90X900

drivers/video/Makefile +2 -0

index ddc2af2..d841433 100644
@@ -115,6 +115,8 @@ obj-$(CONFIG_FB_SH7760)		  += sh7760fb.o
 obj-$(CONFIG_FB_IMX)              += imxfb.o
 obj-$(CONFIG_FB_S3C)		  += s3c-fb.o
 obj-$(CONFIG_FB_S3C2410)	  += s3c2410fb.o
+obj-$(CONFIG_S5P_MIPI_DSI)	  += s5p-dsim.o s5p_dsim_common.o \
+    					s5p_dsim_lowlevel.o
 obj-$(CONFIG_FB_FSL_DIU)	  += fsl-diu-fb.o
 obj-$(CONFIG_FB_COBALT)           += cobalt_lcdfb.o
 obj-$(CONFIG_FB_PNX4008_DUM)	  += pnx4008/

drivers/video/s5p-dsim.c new file +46 -0

new file mode 100644
index 0000000..96893bc
@@ -0,0 +1,483 @@
+/* linux/drivers/video/samsung/s5p-dsim.c
+ *
+ * Samsung MIPI-DSIM driver.
+ *
+ * InKi Dae, <[email protected]>
+ *
+ * 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/regulator/consumer.h>
+#include <linux/notifier.h>
+
+#include <plat/fb.h>
+#include <plat/regs-dsim.h>
+#include <plat/dsim.h>
+#include <plat/mipi_ddi.h>
+
+#include <mach/map.h>
+
+#include "s5p_dsim_common.h"
+
+struct mipi_lcd_info {
+	struct list_head	list;
+	struct mipi_lcd_driver	*mipi_drv;
+};
+
+static LIST_HEAD(lcd_info_list);

drivers/video/s5p-dsim.c new file +65 -0

+	switch (event) {
+	case FB_BLANK_UNBLANK:
+	case FB_BLANK_NORMAL:
+		if (dsim.pd->mipi_power)
+			dsim.pd->mipi_power(&dsim, (void *) dsim.r_mipi_1_1v,
+				(void *) dsim.r_mipi_1_8v, 1);
+
+		clk_enable(dsim.clock);
+
+		if (dsim.mipi_drv->resume)
+			dsim.mipi_drv->resume(dsim.dev);
+
+		s5p_dsim_init_dsim(&dsim);
+		s5p_dsim_init_link(&dsim);
+
+		s5p_dsim_set_hs_enable(&dsim);
+		s5p_dsim_set_data_transfer_mode(&dsim,
+			DSIM_TRANSFER_BYCPU, 1);
+
+		/* it needs delay for stabilization */
+		mdelay(dsim.pd->delay_for_stabilization);
+
+		if (dsim.mipi_drv->init)
+			dsim.mipi_drv->init(dsim.dev);
+		else
+			dev_warn(dsim.dev, "init func is null.\n");
+
+		s5p_dsim_set_display_mode(&dsim, dsim.dsim_lcd_info, NULL);
+
+		s5p_dsim_set_data_transfer_mode(&dsim, DSIM_TRANSFER_BYLCDC, 1);
+		dsim.mipi_ddi_pd->resume_complete = 1;
+
+		dev_dbg(dsim.dev, "FB_BLANK_NORMAL or UNBLANK.\n");
+
+		break;
+	case FB_BLANK_POWERDOWN:
+		dsim.mipi_ddi_pd->resume_complete = 0;
+
+		if (dsim.mipi_drv->suspend)
+			dsim.mipi_drv->suspend(dsim.dev, pm);
+
+		clk_disable(dsim.clock);
+
+		if (dsim.pd->mipi_power)
+			dsim.pd->mipi_power(&dsim, (void *) dsim.r_mipi_1_1v,
+				(void *) dsim.r_mipi_1_8v, 0);
+
+		dev_dbg(dsim.dev, "FB_BLANK_POWERDOWN.\n");
+		break;
+	default:
+		dev_warn(dsim.dev, "unknown FB_BLANK command.\n");
+		break;
+	}
+
+	return 0;
+}
+
+static int s5p_dsim_register_notif(struct device *dev)
+{
+	memset(&dsim.s3cfb_notif, 0, sizeof(struct notifier_block));
+	dsim.s3cfb_notif.notifier_call = s5p_dsim_notifier_callback;
+
+	return 0/*s3cfb_register_client(&dsim.s3cfb_notif)*/;
+}
+

drivers/video/s5p-dsim.c new file +79 -0

+
+int s5p_dsim_register_lcd_driver(struct mipi_lcd_driver *lcd_drv)
+{
+	struct mipi_lcd_info	*lcd_info = NULL;
+
+	lcd_info = kmalloc(sizeof(struct mipi_lcd_info), GFP_KERNEL);
+	if (lcd_info == NULL)
+		return -ENOMEM;
+
+	lcd_info->mipi_drv = kmalloc(sizeof(struct mipi_lcd_driver),
+		GFP_KERNEL);
+	if (lcd_info->mipi_drv == NULL)
+		return -ENOMEM;
+
+
+	memcpy(lcd_info->mipi_drv, lcd_drv, sizeof(struct mipi_lcd_driver));
+
+	mutex_lock(&mipi_lock);
+	list_add_tail(&lcd_info->list, &lcd_info_list);
+	mutex_unlock(&mipi_lock);
+
+	dev_dbg(dsim.dev, "registered panel driver(%s) to mipi-dsi driver.\n",
+		lcd_drv->name);
+
+	return 0;
+}
+
+/*
+ * This function is wrapper for changing transfer mode.
+ * It is used to in panel driver before and after changing gamma value.
+ */
+static int s5p_dsim_change_transfer_mode(int mode)
+{
+	if (mode < 0 || mode > 1) {
+		dev_err(dsim.dev, "mode range should be 0 or 1.\n");
+		return -EFAULT;
+	}
+
+	if (mode == 0)
+		s5p_dsim_set_data_transfer_mode(&dsim,
+			DSIM_TRANSFER_BYCPU, mode);
+	else
+		s5p_dsim_set_data_transfer_mode(&dsim,
+			DSIM_TRANSFER_BYLCDC, mode);
+
+	return 0;
+}
+
+struct mipi_lcd_driver *scan_mipi_driver(const char *name)
+{
+	struct mipi_lcd_info *lcd_info;
+	struct mipi_lcd_driver *mipi_drv = NULL;
+
+	mutex_lock(&mipi_lock);
+
+	dev_dbg(dsim.dev, "find lcd panel driver(%s).\n",
+		name);
+
+	list_for_each_entry(lcd_info, &lcd_info_list, list) {
+		mipi_drv = lcd_info->mipi_drv;
+
+		if ((strcmp(mipi_drv->name, name)) == 0) {
+			mutex_unlock(&mipi_lock);
+			dev_dbg(dsim.dev, "found!!!(%s).\n", mipi_drv->name);
+			return mipi_drv;
+		}
+	}
+
+	dev_warn(dsim.dev, "failed to find lcd panel driver(%s).\n",
+		name);
+
+	mutex_unlock(&mipi_lock);
+
+	return NULL;
+}
+
+static int s5p_dsim_probe(struct platform_device *pdev)
+{
+	struct resource *res;

drivers/video/s5p-dsim.c new file +24 -0

+	dsim.mipi_ddi_pd->resume_complete = 0;
+
+	dsim.r_mipi_1_1v = regulator_get(&pdev->dev, "VMIPI_1.1V");
+	if (IS_ERR(dsim.r_mipi_1_1v)) {
+		dev_err(&pdev->dev, "failed to get regulator VMIPI_1.1V.\n");
+		goto regulator_get_err;
+	}
+
+	dsim.r_mipi_1_8v = regulator_get(&pdev->dev, "VMIPI_1.8V");
+	if (IS_ERR(dsim.r_mipi_1_8v)) {
+		dev_err(&pdev->dev, "failed to get regulator VMIPI_1.8V.\n");
+		goto regulator_get_err;
+	}
+
+	/* clock */
+	dsim.clock = clk_get(&pdev->dev, dsim.pd->clk_name);
+	if (IS_ERR(dsim.clock)) {
+		dev_err(&pdev->dev, "failed to get dsim clock source\n");
+		return -EINVAL;
+	}
+
+	clk_enable(dsim.clock);
+
+	/* io memory */

drivers/video/s5p-dsim.c new file +7 -0

+	if (!dsim.reg_base) {
+		dev_err(&pdev->dev, "failed to remap io region\n");
+		ret = -EINVAL;
+		goto err_clk_disable;
+	}
+
+	/* it is used for MIPI-DSI based lcd panel driver. */

drivers/video/s5p-dsim.c new file +20 -0

+			dev_err(&pdev->dev, "request_irq failed.\n");
+			goto err_trigger_irq;
+		}
+	}
+
+	if (dsim.pd->mipi_power)
+		dsim.pd->mipi_power(&dsim, (void *) dsim.r_mipi_1_1v,
+			(void *) dsim.r_mipi_1_8v, 1);
+	else {
+		dev_err(&pdev->dev, "mipi_power is NULL.\n");
+		goto mipi_power_err;
+	}
+
+	/* find lcd panel driver registered to mipi-dsi driver. */
+	dsim.mipi_drv = scan_mipi_driver(dsim.pd->lcd_panel_name);
+	if (dsim.mipi_drv == NULL) {
+		dev_err(&pdev->dev, "mipi_drv is NULL.\n");
+		goto mipi_drv_err;
+	}
+

drivers/video/s5p-dsim.c new file +156 -0

+	/* set lcd panel driver link */
+	ret = dsim.mipi_drv->set_link(dsim.mipi_ddi_pd);
+	if (ret < 0) {
+		dev_err(&pdev->dev, "failed to set link.\n");
+		goto mipi_drv_err;
+	}
+
+	dsim.mipi_drv->probe(&pdev->dev);
+
+	s5p_dsim_init_dsim(&dsim);
+	s5p_dsim_init_link(&dsim);
+
+	s5p_dsim_set_hs_enable(&dsim);
+	s5p_dsim_set_data_transfer_mode(&dsim, DSIM_TRANSFER_BYCPU, 1);
+
+	/* it needs delay for stabilization */
+	mdelay(dsim.pd->delay_for_stabilization);
+
+	/* initialize lcd panel */
+	if (dsim.mipi_drv->init)
+		dsim.mipi_drv->init(&pdev->dev);
+	else
+		dev_warn(&pdev->dev, "init func is null.\n");
+
+	if (dsim.mipi_drv->display_on)
+		dsim.mipi_drv->display_on(&pdev->dev);
+	else
+		dev_warn(&pdev->dev, "display_on func is null.\n");
+
+	s5p_dsim_set_display_mode(&dsim, dsim.dsim_lcd_info, NULL);
+
+	s5p_dsim_set_data_transfer_mode(&dsim, DSIM_TRANSFER_BYLCDC, 1);
+
+	s5p_dsim_register_notif(&pdev->dev);
+
+	/* in case of command mode, trigger. */
+	if (dsim.dsim_lcd_info->e_interface == DSIM_COMMAND) {
+		if (dsim.pd->trigger)
+			dsim.pd->trigger(registered_fb[0]);
+		else
+			dev_warn(&pdev->dev, "trigger is null.\n");
+	}
+
+	dev_info(&pdev->dev, "mipi-dsi driver(%s mode) has been probed.\n",
+		(dsim.dsim_lcd_info->e_interface == DSIM_COMMAND) ?
+			"CPU" : "RGB");
+
+	return 0;
+
+err_trigger_irq:
+mipi_drv_err:
+	dsim.pd->mipi_power(&dsim, (void *) dsim.r_mipi_1_1v,
+		(void *) dsim.r_mipi_1_8v, 0);
+
+mipi_power_err:
+	iounmap((void __iomem *) dsim.reg_base);
+
+err_clk_disable:
+	clk_disable(dsim.clock);
+
+regulator_get_err:
+
+	return ret;
+
+}
+
+static int s5p_dsim_remove(struct platform_device *pdev)
+{
+	return 0;
+}
+
+#ifdef CONFIG_PM
+int s5p_dsim_suspend(struct platform_device *pdev, pm_message_t state)
+{
+	dsim.mipi_ddi_pd->resume_complete = 0;
+
+	if (dsim.mipi_drv->suspend)
+		dsim.mipi_drv->suspend(&pdev->dev, state);
+
+	clk_disable(dsim.clock);
+
+	if (dsim.pd->mipi_power)
+		dsim.pd->mipi_power(&dsim, (void *) dsim.r_mipi_1_1v,
+			(void *) dsim.r_mipi_1_8v, 0);
+
+	return 0;
+}
+
+int s5p_dsim_resume(struct platform_device *pdev)
+{
+	if (dsim.pd->mipi_power)
+		dsim.pd->mipi_power(&dsim, (void *) dsim.r_mipi_1_1v,
+			(void *) dsim.r_mipi_1_8v, 1);
+
+	clk_enable(dsim.clock);
+
+	if (dsim.mipi_drv->resume)
+		dsim.mipi_drv->resume(&pdev->dev);
+
+	s5p_dsim_init_dsim(&dsim);
+	s5p_dsim_init_link(&dsim);
+
+	s5p_dsim_set_hs_enable(&dsim);
+	s5p_dsim_set_data_transfer_mode(&dsim, DSIM_TRANSFER_BYCPU, 1);
+
+	/* it needs delay for stabilization */
+	mdelay(dsim.pd->delay_for_stabilization);
+
+	/* initialize lcd panel */
+	if (dsim.mipi_drv->init)
+		dsim.mipi_drv->init(&pdev->dev);
+	else
+		dev_warn(&pdev->dev, "init func is null.\n");
+
+	s5p_dsim_set_display_mode(&dsim, dsim.dsim_lcd_info, NULL);
+
+	s5p_dsim_set_data_transfer_mode(&dsim, DSIM_TRANSFER_BYLCDC, 1);
+
+	dsim.mipi_ddi_pd->resume_complete = 1;
+
+	return 0;
+}
+#else
+#define s5p_dsim_suspend NULL
+#define s5p_dsim_resume NULL
+#endif
+
+static struct platform_driver s5p_dsim_driver = {
+	.probe = s5p_dsim_probe,
+	.remove = s5p_dsim_remove,
+	.suspend = s5p_dsim_suspend,
+	.resume = s5p_dsim_resume,
+	.driver = {
+		   .name = "s5p-dsim",
+		   .owner = THIS_MODULE,
+	},
+};
+
+static int s5p_dsim_register(void)
+{
+	platform_driver_register(&s5p_dsim_driver);
+
+	return 0;
+}
+
+static void s5p_dsim_unregister(void)
+{
+	platform_driver_unregister(&s5p_dsim_driver);
+}
+
+module_init(s5p_dsim_register);
+module_exit(s5p_dsim_unregister);
+
+MODULE_AUTHOR("InKi Dae <[email protected]>");
+MODULE_DESCRIPTION("Samusung MIPI-DSIM driver");
+MODULE_LICENSE("GPL");

drivers/video/s5p_dsim_common.c new file +41 -0

new file mode 100644
index 0000000..77724dc
@@ -0,0 +1,753 @@
+/* linux/drivers/video/samsung/s5p_dsim_common.c
+ *
+ * Samsung MIPI-DSIM common driver.
+ *
+ * InKi Dae, <[email protected]>
+ *
+ * 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/kthread.h>
+
+#include <plat/fb.h>
+#include <plat/regs-dsim.h>
+
+#include <mach/map.h>
+#include <plat/dsim.h>
+#include <plat/mipi_ddi.h>
+
+#include "s5p_dsim_lowlevel.h"
+
+static void s5p_dsim_long_data_wr(struct dsim_global *dsim, unsigned int data0,
+	unsigned int data1)
+{
+	unsigned int data_cnt = 0, payload = 0;
+
+	/* in case that data count is more then 4 */

drivers/video/s5p_dsim_common.c new file +191 -0

+			dev_dbg(dsim->dev, "count = 3 payload = %x, %x %x %x\n",
+				payload, *(u8 *)(data0 + data_cnt),
+				*(u8 *)(data0 + (data_cnt + 1)),
+				*(u8 *)(data0 + (data_cnt + 2)));
+			} else if ((data1 - data_cnt) == 2) {
+				payload = *(u8 *)(data0 + data_cnt) |
+					(*(u8 *)(data0 + (data_cnt + 1))) << 8;
+			dev_dbg(dsim->dev,
+				"count = 2 payload = %x, %x %x\n", payload,
+				*(u8 *)(data0 + data_cnt),
+				*(u8 *)(data0 + (data_cnt + 1)));
+			} else if ((data1 - data_cnt) == 1) {
+				payload = *(u8 *)(data0 + data_cnt);
+			}
+
+			s5p_dsim_wr_tx_data(dsim, payload);
+		/* send 4bytes per one time. */
+		} else {
+			payload = *(u8 *)(data0 + data_cnt) |
+				(*(u8 *)(data0 + (data_cnt + 1))) << 8 |
+				(*(u8 *)(data0 + (data_cnt + 2))) << 16 |
+				(*(u8 *)(data0 + (data_cnt + 3))) << 24;
+
+			dev_dbg(dsim->dev,
+				"count = 4 payload = %x, %x %x %x %x\n",
+				payload, *(u8 *)(data0 + data_cnt),
+				*(u8 *)(data0 + (data_cnt + 1)),
+				*(u8 *)(data0 + (data_cnt + 2)),
+				*(u8 *)(data0 + (data_cnt + 3)));
+
+			s5p_dsim_wr_tx_data(dsim, payload);
+		}
+	}
+}
+
+int s5p_dsim_wr_data(void *dsim_data, unsigned int data_id,
+	unsigned int data0, unsigned int data1)
+{
+	struct dsim_global *dsim = NULL;
+	unsigned int timeout = 5000 * 2;
+	unsigned long delay_val, udelay;
+	unsigned char check_rx_ack = 0;
+
+	dsim = (struct dsim_global *)dsim_data;
+
+	if (dsim == NULL) {
+		dev_err(dsim->dev, "dsim_data is NULL.\n");
+		return -EFAULT;
+	}
+
+
+	if (dsim->state == DSIM_STATE_ULPS) {
+		dev_err(dsim->dev, "state is ULPS.\n");
+
+		return -EINVAL;
+	}
+
+	delay_val = 1000000 / dsim->dsim_info->esc_clk;
+	udelay = 10 * delay_val;
+
+	mdelay(udelay);
+
+	/* only if transfer mode is LPDT, wait SFR becomes empty. */
+	if (dsim->state == DSIM_STATE_STOP) {
+		while (!(s5p_dsim_get_fifo_state(dsim) &
+				SFR_HEADER_EMPTY)) {
+			if ((timeout--) > 0)
+				mdelay(1);
+			else {
+				dev_err(dsim->dev,
+					"SRF header fifo is not empty.\n");
+				return -EINVAL;
+			}
+		}
+	}
+
+	switch (data_id) {
+	/* short packet types of packet types for command. */
+	case GEN_SHORT_WR_NO_PARA:
+	case GEN_SHORT_WR_1_PARA:
+	case GEN_SHORT_WR_2_PARA:
+	case DCS_WR_NO_PARA:
+	case DCS_WR_1_PARA:
+	case SET_MAX_RTN_PKT_SIZE:
+		s5p_dsim_wr_tx_header(dsim, (unsigned char) data_id,
+			(unsigned char) data0, (unsigned char) data1);
+		if (check_rx_ack)
+			/* process response func should be implemented */
+			return 0;
+		else
+			return -EINVAL;
+
+	/* general command */
+	case CMD_OFF:
+	case CMD_ON:
+	case SHUT_DOWN:
+	case TURN_ON:
+		s5p_dsim_wr_tx_header(dsim, (unsigned char) data_id,
+			(unsigned char) data0, (unsigned char) data1);
+		if (check_rx_ack)
+			/* process response func should be implemented. */
+			return 0;
+		else
+			return -EINVAL;
+
+	/* packet types for video data */
+	case VSYNC_START:
+	case VSYNC_END:
+	case HSYNC_START:
+	case HSYNC_END:
+	case EOT_PKT:
+		return 0;
+
+	/* short and response packet types for command */
+	case GEN_RD_1_PARA:
+	case GEN_RD_2_PARA:
+	case GEN_RD_NO_PARA:
+	case DCS_RD_NO_PARA:
+		s5p_dsim_clear_interrupt(dsim, 0xffffffff);
+		s5p_dsim_wr_tx_header(dsim, (unsigned char) data_id,
+			(unsigned char) data0, (unsigned char) data1);
+		/* process response func should be implemented. */
+		return 0;
+
+	/* long packet type and null packet */
+	case NULL_PKT:
+	case BLANKING_PKT:
+		return 0;
+	case GEN_LONG_WR:
+	case DCS_LONG_WR:
+	{
+		unsigned int size, data_cnt = 0, payload = 0;
+
+		size = data1 * 4;
+
+		/* if data count is less then 4, then send 3bytes data.  */
+		if (data1 < 4) {
+			payload = *(u8 *)(data0) |
+				*(u8 *)(data0 + 1) << 8 |
+				*(u8 *)(data0 + 2) << 16;
+
+			s5p_dsim_wr_tx_data(dsim, payload);
+
+			dev_dbg(dsim->dev, "count = %d payload = %x,%x %x %x\n",
+				data1, payload,
+				*(u8 *)(data0 + data_cnt),
+				*(u8 *)(data0 + (data_cnt + 1)),
+				*(u8 *)(data0 + (data_cnt + 2)));
+		/* in case that data count is more then 4 */
+		} else
+			s5p_dsim_long_data_wr(dsim, data0, data1);
+
+		/* put data into header fifo */
+		s5p_dsim_wr_tx_header(dsim, (unsigned char) data_id,
+			(unsigned char) (((unsigned short) data1) & 0xff),
+			(unsigned char) ((((unsigned short) data1) & 0xff00) >>
+				8));
+
+	}
+	if (check_rx_ack)
+		/* process response func should be implemented. */
+		return 0;
+	else
+		return -EINVAL;
+
+	/* packet typo for video data */
+	case RGB565_PACKED:
+	case RGB666_PACKED:
+	case RGB666_LOOSLY:
+	case RGB888_PACKED:
+		if (check_rx_ack)
+			/* process response func should be implemented. */
+			return 0;
+		else
+			return -EINVAL;
+	default:
+		dev_warn(dsim->dev,
+			"data id %x is not supported current DSI spec.\n",
+			data_id);
+
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+int s5p_dsim_init_header_fifo(struct dsim_global *dsim)
+{
+	unsigned int cnt;
+
+	if (dsim == NULL) {

drivers/video/s5p_dsim_common.c new file +94 -0

+{
+	if (dsim == NULL) {
+		printk(KERN_ERR "dsim_global pointer is NULL.\n");
+		return -EFAULT;
+	}
+
+	if (enable) {
+		int sw_timeout = 1000;
+		s5p_dsim_clear_interrupt(dsim, DSIM_PLL_STABLE);
+		s5p_dsim_enable_pll(dsim, 1);
+		while (1) {
+			sw_timeout--;
+			if (s5p_dsim_is_pll_stable(dsim))
+				return 0;
+			if (sw_timeout == 0)
+				return -EINVAL;
+		}
+	} else
+		s5p_dsim_enable_pll(dsim, 0);
+
+	return 0;
+}
+
+unsigned long s5p_dsim_change_pll(struct dsim_global *dsim,
+	unsigned char pre_divider, unsigned short main_divider,
+	unsigned char scaler)
+{
+	unsigned long dfin_pll, dfvco, dpll_out;
+	unsigned char freq_band;
+
+	if (dsim == NULL) {
+		printk(KERN_ERR "dsim_global pointer is NULL.\n");
+		return 0;
+	}
+
+	dfin_pll = (MIPI_FIN / pre_divider);
+
+	if (dfin_pll < 6 * 1000 * 1000 || dfin_pll > 12 * 1000 * 1000) {
+		dev_warn(dsim->dev, "warning!!\n");
+		dev_warn(dsim->dev, "fin_pll range is 6MHz ~ 12MHz\n");
+		dev_warn(dsim->dev, "fin_pll of mipi dphy pll is %luMHz\n",
+			(dfin_pll / 1000000));
+
+		s5p_dsim_enable_afc(dsim, 0, 0);
+	} else {
+		if (dfin_pll < 7 * 1000000)
+			s5p_dsim_enable_afc(dsim, 1, 0x1);
+		else if (dfin_pll < 8 * 1000000)
+			s5p_dsim_enable_afc(dsim, 1, 0x0);
+		else if (dfin_pll < 9 * 1000000)
+			s5p_dsim_enable_afc(dsim, 1, 0x3);
+		else if (dfin_pll < 10 * 1000000)
+			s5p_dsim_enable_afc(dsim, 1, 0x2);
+		else if (dfin_pll < 11 * 1000000)
+			s5p_dsim_enable_afc(dsim, 1, 0x5);
+		else
+			s5p_dsim_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 < 500000000 || dfvco > 1000000000) {
+		dev_warn(dsim->dev, "Caution!!\n");
+		dev_warn(dsim->dev, "fvco range is 500MHz ~ 1000MHz\n");
+		dev_warn(dsim->dev, "fvco of mipi dphy pll is %luMHz\n",
+			(dfvco / 1000000));
+	}
+
+	dpll_out = dfvco / (1 << scaler);
+	dev_dbg(dsim->dev, "dpll_out = %lu, dfvco = %lu, scaler = %d\n",
+		dpll_out, dfvco, scaler);
+	if (dpll_out < 100 * 1000000)
+		freq_band = 0x0;
+	else if (dpll_out < 120 * 1000000)
+		freq_band = 0x1;
+	else if (dpll_out < 170 * 1000000)
+		freq_band = 0x2;
+	else if (dpll_out < 220 * 1000000)
+		freq_band = 0x3;
+	else if (dpll_out < 270 * 1000000)
+		freq_band = 0x4;
+	else if (dpll_out < 320 * 1000000)
+		freq_band = 0x5;
+	else if (dpll_out < 390 * 1000000)
+		freq_band = 0x6;
+	else if (dpll_out < 450 * 1000000)
+		freq_band = 0x7;
+	else if (dpll_out < 510 * 1000000)
+		freq_band = 0x8;
+	else if (dpll_out < 560 * 1000000)
+		freq_band = 0x9;
+	else if (dpll_out < 640 * 1000000)
+		freq_band = 0xa;

drivers/video/s5p_dsim_common.c new file +27 -0

+	dev_dbg(dsim->dev, "freq_band = %d\n", freq_band);
+
+	s5p_dsim_pll_freq(dsim, pre_divider, main_divider, scaler);
+
+	{
+	    unsigned char temp0, temp1;
+
+	    temp0 = 0;
+	    s5p_dsim_hs_zero_ctrl(dsim, temp0);
+	    temp1 = 0;
+	    s5p_dsim_prep_ctrl(dsim, temp1);
+	}
+
+	/* Freq Band */
+	s5p_dsim_pll_freq_band(dsim, freq_band);
+
+	/* Stable time */
+	s5p_dsim_pll_stable_time(dsim,
+		dsim->dsim_info->pll_stable_time);
+
+	/* Enable PLL */
+	dev_dbg(dsim->dev, "FOUT of mipi dphy pll is %luMHz\n",
+		(dpll_out / 1000000));
+
+	return dpll_out;
+}
+

drivers/video/s5p_dsim_common.c new file +358 -0

+	if (enable) {
+		dsim->e_clk_src = byte_clk_sel;
+
+		/* Escape mode clock and byte clock source */
+		s5p_dsim_set_byte_clock_src(dsim, byte_clk_sel);
+
+		/* DPHY, DSIM Link : D-PHY clock out */
+		if (byte_clk_sel == DSIM_PLL_OUT_DIV8) {
+			dsim->hs_clk = s5p_dsim_change_pll(dsim,
+				dsim->dsim_info->p, dsim->dsim_info->m,
+				dsim->dsim_info->s);
+			if (dsim->hs_clk == 0) {
+				dev_err(dsim->dev,
+					"failed to get hs clock.\n");
+				return -EINVAL;
+			}
+
+			dsim->byte_clk = dsim->hs_clk / 8;
+			s5p_dsim_enable_pll_bypass(dsim, 0);
+			s5p_dsim_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 \
+				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 \
+				external clock source for MIPI DSIM\n");
+
+		/* escape clock divider */
+		esc_div = dsim->byte_clk / (dsim->dsim_info->esc_clk);
+		dev_dbg(dsim->dev,
+			"esc_div = %d, byte_clk = %lu, esc_clk = %lu\n",
+			esc_div, dsim->byte_clk, dsim->dsim_info->esc_clk);
+		if ((dsim->byte_clk / esc_div) >= 20000000 ||
+			(dsim->byte_clk / esc_div) > dsim->dsim_info->esc_clk)
+			esc_div += 1;
+
+		dsim->escape_clk = dsim->byte_clk / esc_div;
+		dev_dbg(dsim->dev,
+			"escape_clk = %lu, byte_clk = %lu, esc_div = %d\n",
+			dsim->escape_clk, dsim->byte_clk, esc_div);
+
+		/*
+		 * enable escclk on lane
+		 *
+		 * in case of evt0, DSIM_TRUE is enable and
+		 * DSIM_FALSE is enable for evt1.
+		 */
+		if (dsim->pd->platform_rev == 1)
+			s5p_dsim_enable_byte_clock(dsim, DSIM_FALSE);
+		else
+			s5p_dsim_enable_byte_clock(dsim, DSIM_TRUE);
+
+		/* enable byte clk and escape clock */
+		s5p_dsim_set_esc_clk_prs(dsim, 1, esc_div);
+		/* escape clock on lane */
+		s5p_dsim_enable_esc_clk_on_lane(dsim,
+			(DSIM_LANE_CLOCK | dsim->data_lane), 1);
+
+		dev_dbg(dsim->dev, "byte clock is %luMHz\n",
+			(dsim->byte_clk / 1000000));
+		dev_dbg(dsim->dev, "escape clock that user's need is %lu\n",
+			(dsim->dsim_info->esc_clk / 1000000));
+		dev_dbg(dsim->dev, "escape clock divider is %x\n", esc_div);
+		dev_dbg(dsim->dev, "escape clock is %luMHz\n",
+			((dsim->byte_clk / esc_div) / 1000000));
+
+		if ((dsim->byte_clk / esc_div) > dsim->escape_clk) {
+			esc_clk_error_rate = dsim->escape_clk /
+				(dsim->byte_clk / esc_div);
+			dev_warn(dsim->dev, "error rate is %lu over.\n",
+				(esc_clk_error_rate / 100));
+		} else if ((dsim->byte_clk / esc_div) < (dsim->escape_clk)) {
+			esc_clk_error_rate = (dsim->byte_clk / esc_div) /
+				dsim->escape_clk;
+			dev_warn(dsim->dev, "error rate is %lu under.\n",
+				(esc_clk_error_rate / 100));
+		}
+	} else {
+		s5p_dsim_enable_esc_clk_on_lane(dsim,
+			(DSIM_LANE_CLOCK | dsim->data_lane), 0);
+		s5p_dsim_set_esc_clk_prs(dsim, 0, 0);
+
+		/*
+		 * in case of evt0, DSIM_FALSE is disable and
+		 * DSIM_TRUE is disable for evt1.
+		 */
+		if (dsim->pd->platform_rev == 1)
+			s5p_dsim_enable_byte_clock(dsim, DSIM_TRUE);
+		else
+			s5p_dsim_enable_byte_clock(dsim, DSIM_FALSE);
+
+		if (byte_clk_sel == DSIM_PLL_OUT_DIV8)
+			s5p_dsim_pll_on(dsim, 0);
+	}
+
+	return 0;
+}
+
+int s5p_dsim_init_dsim(struct dsim_global *dsim)
+{
+	if (dsim == NULL) {
+		printk(KERN_ERR "dsim_global pointer is NULL.\n");
+		return -EFAULT;
+	}
+
+	if (dsim->pd->init_d_phy)
+		dsim->pd->init_d_phy(dsim);
+
+	dsim->state = DSIM_STATE_RESET;
+
+	switch (dsim->dsim_info->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;
+	};
+
+	s5p_dsim_init_header_fifo(dsim);
+	s5p_dsim_sw_reset(dsim);
+	s5p_dsim_dp_dn_swap(dsim, dsim->dsim_info->e_lane_swap);
+
+	return 0;
+}
+
+int s5p_dsim_enable_frame_done_int(struct dsim_global *dsim, int enable)
+{
+	/* enable only frame done interrupt */
+	s5p_dsim_set_interrupt_mask(dsim, INTMSK_FRAME_DONE, enable);
+
+	return 0;
+}
+
+int s5p_dsim_set_display_mode(struct dsim_global *dsim,
+	struct dsim_lcd_config *main_lcd, struct dsim_lcd_config *sub_lcd)
+{
+	struct fb_videomode *mlcd_video = NULL;
+	struct fb_cmdmode *mlcd_command = NULL;
+	struct s3c_fb_pd_win *pd;
+	unsigned int width = 0, height = 0;
+
+	if (dsim == NULL) {
+		printk(KERN_ERR "dsim_global pointer is NULL.\n");
+		return -EFAULT;
+	}
+
+	pd = (struct s3c_fb_pd_win *)main_lcd->lcd_panel_info;
+
+	/* in case of VIDEO MODE (RGB INTERFACE) */
+	if (dsim->dsim_lcd_info->e_interface == (u32) DSIM_VIDEO) {
+		mlcd_video = (struct fb_videomode *)&pd->win_mode;
+		width = mlcd_video->xres;
+		height = mlcd_video->yres;
+
+		if (dsim->dsim_info->auto_vertical_cnt == DSIM_FALSE) {
+			s5p_dsim_set_main_disp_vporch(dsim,
+				mlcd_video->upper_margin,
+				mlcd_video->lower_margin, 0);
+			s5p_dsim_set_main_disp_hporch(dsim,
+				mlcd_video->left_margin,
+				mlcd_video->right_margin);
+			s5p_dsim_set_main_disp_sync_area(dsim,
+				mlcd_video->vsync_len,
+				mlcd_video->hsync_len);
+		}
+	} else {	/* in case of COMMAND MODE (CPU or I80 INTERFACE) */
+		mlcd_command = (struct fb_cmdmode *)&pd->cmd_mode;
+		width = mlcd_command->xres;
+		height = mlcd_command->yres;
+	}
+
+	s5p_dsim_set_main_disp_resol(dsim, height, width);
+
+	if (sub_lcd != NULL)
+			dev_warn(dsim->dev, "sub lcd isn't supported yet.\n");
+
+	s5p_dsim_display_config(dsim, dsim->dsim_lcd_info, NULL);
+
+	return 0;
+}
+
+int s5p_dsim_init_link(struct dsim_global *dsim)
+{
+	unsigned int time_out = 100;
+
+	if (dsim == NULL) {
+		printk(KERN_ERR "dsim_global pointer is NULL.\n");
+		return -EFAULT;
+	}
+
+	switch (dsim->state) {
+	case DSIM_STATE_RESET:
+		s5p_dsim_sw_reset(dsim);
+	case DSIM_STATE_INIT:
+		s5p_dsim_init_fifo_pointer(dsim, 0x1f);
+
+		/* dsi configuration */
+		s5p_dsim_init_config(dsim, dsim->dsim_lcd_info,
+			NULL, dsim->dsim_info);
+		s5p_dsim_enable_lane(dsim, DSIM_LANE_CLOCK, 1);
+		s5p_dsim_enable_lane(dsim, dsim->data_lane, 1);
+
+		/* set clock configuration */
+		s5p_dsim_set_clock(dsim, dsim->dsim_info->e_byte_clk,
+			1);
+
+		/* check clock and data lane state is stop state */
+		while (!(s5p_dsim_is_lane_state(dsim, DSIM_LANE_CLOCK)
+			    == DSIM_LANE_STATE_STOP) &&
+			!(s5p_dsim_is_lane_state(dsim,
+				dsim->data_lane) == DSIM_LANE_STATE_STOP)) {
+			time_out--;
+			if (time_out == 0) {
+				dev_info(dsim->dev,
+					"DSI Master is not stop state.\n");
+				dev_info(dsim->dev,
+					"Check initialization process\n");
+
+				return -EINVAL;
+			}
+		}
+
+		if (time_out != 0) {
+			dev_info(dsim->dev,
+				"initialization of DSI Master is successful\n");
+			dev_info(dsim->dev, "DSI Master state is stop state\n");
+		}
+
+		dsim->state = DSIM_STATE_STOP;
+
+		/* BTA sequence counters */
+		s5p_dsim_set_stop_state_counter(dsim,
+			dsim->dsim_info->stop_holding_cnt);
+		s5p_dsim_set_bta_timeout(dsim,
+			dsim->dsim_info->bta_timeout);
+		s5p_dsim_set_lpdr_timeout(dsim,
+			dsim->dsim_info->rx_timeout);
+
+		/* default LPDT by both cpu and lcd controller */
+		s5p_dsim_set_data_mode(dsim, DSIM_TRANSFER_BOTH,
+			DSIM_STATE_STOP);
+
+		return 0;
+	default:
+		dev_info(dsim->dev, "DSI Master is already init.\n");
+		return 0;
+	}
+
+	return 0;
+}
+
+int s5p_dsim_set_hs_enable(struct dsim_global *dsim)
+{
+	if (dsim == NULL) {
+		printk(KERN_ERR "dsim_global pointer is NULL.\n");
+		return -EFAULT;
+	}
+
+	if (dsim->state == DSIM_STATE_STOP) {
+		if (dsim->e_clk_src != DSIM_EXT_CLK_BYPASS) {
+			dsim->state = DSIM_STATE_HSCLKEN;
+			s5p_dsim_set_data_mode(dsim,
+				DSIM_TRANSFER_BOTH, DSIM_STATE_HSCLKEN);
+			s5p_dsim_enable_hs_clock(dsim, 1);
+
+			return 0;
+		} else
+			dev_warn(dsim->dev,
+				"clock source is external bypass.\n");
+	} else
+		dev_warn(dsim->dev, "DSIM is not stop state.\n");
+
+	return 0;
+}
+
+int s5p_dsim_set_data_transfer_mode(struct dsim_global *dsim,
+	unsigned char data_path, unsigned char hs_enable)
+{
+	int ret = -1;
+
+	if (dsim == NULL) {
+		printk(KERN_ERR "dsim_global pointer is NULL.\n");
+		return -EFAULT;
+	}
+
+	if (hs_enable) {
+		if (dsim->state == DSIM_STATE_HSCLKEN) {
+			s5p_dsim_set_data_mode(dsim, data_path,
+				DSIM_STATE_HSCLKEN);
+			ret = 0;
+		} else {
+			dev_err(dsim->dev, "HS Clock lane is not enabled.\n");
+			ret = -EINVAL;
+		}
+	} 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");
+			ret = -EINVAL;
+		} else {
+			s5p_dsim_set_data_mode(dsim, data_path,
+				DSIM_STATE_STOP);
+			ret = 0;
+		}
+	}
+
+	return ret;
+}
+
+int s5p_dsim_get_frame_done_status(void *dsim_data)
+{
+	struct dsim_global *dsim = NULL;
+
+	dsim = (struct dsim_global *)dsim_data;
+
+	if (dsim == NULL) {
+		dev_err(dsim->dev, "dsim_global pointer is NULL.\n");
+		return -EFAULT;
+	}
+
+	return _s5p_dsim_get_frame_done_status(dsim);
+}
+
+int s5p_dsim_clear_frame_done(void *dsim_data)
+{
+	struct dsim_global *dsim = NULL;
+
+	dsim = (struct dsim_global *)dsim_data;
+
+	if (dsim == NULL) {
+		dev_err(dsim->dev, "dsim_global pointer is NULL.\n");
+		return -EFAULT;
+	}
+
+	_s5p_dsim_clear_frame_done(dsim);
+
+	return 0;
+}
+
+MODULE_AUTHOR("InKi Dae <[email protected]>");
+MODULE_DESCRIPTION("Samusung MIPI-DSIM common driver");
+MODULE_LICENSE("GPL");

drivers/video/s5p_dsim_common.h new file +38 -0

new file mode 100644
index 0000000..deefca1
@@ -0,0 +1,38 @@
+/* linux/drivers/video/samsung/s5p_dsim_common.h
+ *
+ * Header file for Samsung MIPI-DSI common driver.
+ *
+ * Copyright (c) 2009 Samsung Electronics
+ * InKi Dae <[email protected]>
+ *
+ * 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 _S5P_DSIM_COMMON_H
+#define _S5P_DSIM_COMMON_H
+
+extern int s5p_dsim_wr_data(void *dsim_data, unsigned int data_id,
+	unsigned int data0, unsigned int data1);
+extern int s5p_dsim_init_header_fifo(struct dsim_global *dsim);
+extern int s5p_dsim_pll_on(struct dsim_global *dsim, unsigned char enable);
+extern unsigned long s5p_dsim_change_pll(struct dsim_global *dsim,
+	unsigned char pre_divider, unsigned short main_divider,
+	unsigned char scaler);
+extern int s5p_dsim_set_clock(struct dsim_global *dsim,
+	unsigned char byte_clk_sel, unsigned char enable);
+extern int s5p_dsim_init_dsim(struct dsim_global *dsim);
+extern int s5p_dsim_set_display_mode(struct dsim_global *dsim,
+	struct dsim_lcd_config *main_lcd, struct dsim_lcd_config *sub_lcd);
+extern int s5p_dsim_init_link(struct dsim_global *dsim);
+extern int s5p_dsim_set_hs_enable(struct dsim_global *dsim);
+extern int s5p_dsim_set_data_transfer_mode(struct dsim_global *dsim,
+	unsigned char data_path, unsigned char hs_enable);
+extern int s5p_dsim_get_frame_done_status(void *dsim_data);
+extern int s5p_dsim_clear_frame_done(void *dsim_data);
+extern int s5p_dsim_enable_frame_done_int(struct dsim_global *dsim, int enable);
+
+extern struct fb_info *registered_fb[FB_MAX] __read_mostly;
+
+#endif /* _S5P_DSIM_COMMON_H */

drivers/video/s5p_dsim_lowlevel.c new file +26 -0

new file mode 100644
index 0000000..6a27395
@@ -0,0 +1,562 @@
+/* linux/drivers/video/samsung/s5p-dsim.c
+ *
+ * Samsung MIPI-DSIM lowlevel driver.
+ *
+ * InKi Dae, <[email protected]>
+ *
+ * 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/io.h>
+
+#include <mach/map.h>
+
+#include <plat/dsim.h>
+#include <plat/mipi_ddi.h>

drivers/video/s5p_dsim_lowlevel.c new file +187 -0

+	writel(reg, dsim->reg_base + S5P_DSIM_INTMSK);
+}
+
+void s5p_dsim_init_fifo_pointer(struct dsim_global *dsim, unsigned char cfg)
+{
+	unsigned int reg;
+
+	reg = readl(dsim->reg_base + S5P_DSIM_FIFOCTRL);
+
+	writel(reg & ~(cfg), dsim->reg_base + S5P_DSIM_FIFOCTRL);
+	mdelay(10);
+	reg |= cfg;
+
+	writel(reg, dsim->reg_base + S5P_DSIM_FIFOCTRL);
+}
+
+/*
+ * this function set PLL P, M and S value in D-PHY
+ */
+void s5p_dsim_set_phy_tunning(struct dsim_global *dsim, unsigned int value)
+{
+	writel(DSIM_AFC_CTL(value), dsim->reg_base + S5P_DSIM_PHYACCHR);
+}
+
+void s5p_dsim_set_main_disp_resol(struct dsim_global *dsim,
+	unsigned short vert_resol, unsigned short hori_resol)
+{
+	unsigned int reg;
+
+	/* standby should be set after configuration so set to not ready*/
+	reg = (readl(dsim->reg_base + S5P_DSIM_MDRESOL)) &
+		~(DSIM_MAIN_STAND_BY);
+	writel(reg, dsim->reg_base + S5P_DSIM_MDRESOL);
+
+	reg &= ~(0x7ff << 16) & ~(0x7ff << 0);
+	reg |= DSIM_MAIN_VRESOL(vert_resol) | DSIM_MAIN_HRESOL(hori_resol);
+
+	reg |= DSIM_MAIN_STAND_BY;
+	writel(reg, dsim->reg_base + S5P_DSIM_MDRESOL);
+}
+
+void s5p_dsim_set_main_disp_vporch(struct dsim_global *dsim,
+	unsigned int cmd_allow, unsigned int vfront, unsigned int vback)
+{
+	unsigned int reg;
+
+	reg = (readl(dsim->reg_base + S5P_DSIM_MVPORCH)) &
+		~(DSIM_CMD_ALLOW_MASK) & ~(DSIM_STABLE_VFP_MASK) &
+		~(DSIM_MAIN_VBP_MASK);
+
+	reg |= ((cmd_allow & 0xf) << DSIM_CMD_ALLOW_SHIFT) |
+		((vfront & 0x7ff) << DSIM_STABLE_VFP_SHIFT) |
+		((vback & 0x7ff) << DSIM_MAIN_VBP_SHIFT);
+
+	writel(reg, dsim->reg_base + S5P_DSIM_MVPORCH);
+}
+
+void s5p_dsim_set_main_disp_hporch(struct dsim_global *dsim,
+	unsigned short front, unsigned short back)
+{
+	unsigned int reg;
+
+	reg = (readl(dsim->reg_base + S5P_DSIM_MHPORCH)) &
+		~(DSIM_MAIN_HFP_MASK) & ~(DSIM_MAIN_HBP_MASK);
+
+	reg |= (front << DSIM_MAIN_HFP_SHIFT) | (back << DSIM_MAIN_HBP_SHIFT);
+
+	writel(reg, dsim->reg_base + S5P_DSIM_MHPORCH);
+}
+
+void s5p_dsim_set_main_disp_sync_area(struct dsim_global *dsim,
+	unsigned short vert, unsigned short hori)
+{
+	unsigned int reg;
+
+	reg = (readl(dsim->reg_base + S5P_DSIM_MSYNC)) &
+		~(DSIM_MAIN_VSA_MASK) & ~(DSIM_MAIN_HSA_MASK);
+
+	reg |= ((vert & 0x3ff) << DSIM_MAIN_VSA_SHIFT) |
+		(hori << DSIM_MAIN_HSA_SHIFT);
+
+	writel(reg, dsim->reg_base + S5P_DSIM_MSYNC);
+}
+
+void s5p_dsim_set_sub_disp_resol(struct dsim_global *dsim,
+	unsigned short vert, unsigned short hori)
+{
+	unsigned int reg;
+
+	reg = (readl(dsim->reg_base + S5P_DSIM_SDRESOL)) &
+		~(DSIM_SUB_STANDY_MASK);
+
+	writel(reg, dsim->reg_base + S5P_DSIM_SDRESOL);
+
+	reg &= ~(DSIM_SUB_VRESOL_MASK) | ~(DSIM_SUB_HRESOL_MASK);
+	reg |= ((vert & 0x7ff) << DSIM_SUB_VRESOL_SHIFT) |
+		((hori & 0x7ff) << DSIM_SUB_HRESOL_SHIFT);
+	writel(reg, dsim->reg_base + S5P_DSIM_SDRESOL);
+
+	reg |= (1 << DSIM_SUB_STANDY_SHIFT);
+	writel(reg, dsim->reg_base + S5P_DSIM_SDRESOL);
+}
+
+void s5p_dsim_init_config(struct dsim_global *dsim,
+	struct dsim_lcd_config *main_lcd_info,
+	struct dsim_lcd_config *sub_lcd_info, struct dsim_config *dsim_info)
+{
+	unsigned int cfg = (readl(dsim->reg_base + S5P_DSIM_CONFIG)) &
+		~(1 << 28) & ~(0x1f << 20) & ~(0x3 << 5);
+
+	cfg =	(dsim_info->auto_flush << 29) |
+		(dsim_info->eot_disable << 28) |
+		(dsim_info->auto_vertical_cnt << DSIM_AUTO_MODE_SHIFT) |
+		(dsim_info->hse << DSIM_HSE_MODE_SHIFT) |
+		(dsim_info->hfp << DSIM_HFP_MODE_SHIFT) |
+		(dsim_info->hbp << DSIM_HBP_MODE_SHIFT) |
+		(dsim_info->hsa << DSIM_HSA_MODE_SHIFT) |
+		(dsim_info->e_no_data_lane << DSIM_NUM_OF_DATALANE_SHIFT);
+
+	writel(cfg, dsim->reg_base + S5P_DSIM_CONFIG);
+}
+
+void s5p_dsim_display_config(struct dsim_global *dsim,
+	struct dsim_lcd_config *main_lcd, struct dsim_lcd_config *sub_lcd)
+{
+	u32 reg = (readl(dsim->reg_base + S5P_DSIM_CONFIG)) &
+		~(0x3 << 26) & ~(1 << 25) & ~(0x3 << 18) & ~(0x7 << 12) &
+		~(0x3 << 16) & ~(0x7 << 8);
+
+	if (main_lcd->e_interface == DSIM_VIDEO)
+		reg |= (1 << 25);
+	else if (main_lcd->e_interface == DSIM_COMMAND)
+		reg &= ~(1 << 25);
+	else {
+		dev_err(dsim->dev, "this ddi is not MIPI interface.\n");
+		return;
+	}
+
+	/* main lcd */
+	reg |= ((u8) (main_lcd->parameter[DSI_VIDEO_MODE_SEL]) & 0x3) << 26 |
+		((u8) (main_lcd->parameter[DSI_VIRTUAL_CH_ID]) & 0x3) << 18 |
+		((u8) (main_lcd->parameter[DSI_FORMAT]) & 0x7) << 12;
+
+	writel(reg, dsim->reg_base + S5P_DSIM_CONFIG);
+}
+
+void s5p_dsim_enable_lane(struct dsim_global *dsim, unsigned char lane,
+	unsigned char enable)
+{
+	unsigned int reg;
+
+	reg = readl(dsim->reg_base + S5P_DSIM_CONFIG);
+
+	if (lane == DSIM_LANE_CLOCK) {
+		if (enable)
+			reg |= (1 << 0);
+		else
+			reg &= ~(1 << 0);
+	} else {
+		if (enable)
+			reg |= (lane << 1);
+		else
+			reg &= ~(lane << 1);
+	}
+
+	writel(reg, dsim->reg_base + S5P_DSIM_CONFIG);
+}
+
+
+void s5p_dsim_set_data_lane_number(struct dsim_global *dsim,
+	unsigned char count)
+{
+	unsigned int cfg = 0;
+
+	/* get the data lane number. */
+	cfg = DSIM_NUM_OF_DATA_LANE(count);
+
+	writel(cfg, dsim->reg_base + S5P_DSIM_CONFIG);
+}
+
+void s5p_dsim_enable_afc(struct dsim_global *dsim, unsigned char enable,
+	unsigned char afc_code)
+{
+	unsigned int reg = readl(dsim->reg_base + S5P_DSIM_PHYACCHR);
+
+	if (enable) {
+		reg |= (1 << 14);

drivers/video/s5p_dsim_lowlevel.c new file +130 -0

+{
+	unsigned int reg = (readl(dsim->reg_base + S5P_DSIM_CLKCTRL)) &
+		~(DSIM_PLL_BYPASS_EXTERNAL);
+
+	reg |= enable << DSIM_PLL_BYPASS_SHIFT;
+
+	writel(reg, dsim->reg_base + S5P_DSIM_CLKCTRL);
+}
+
+void s5p_dsim_set_pll_pms(struct dsim_global *dsim, unsigned char p,
+	unsigned short m, unsigned short s)
+{
+	unsigned int reg = readl(dsim->reg_base + S5P_DSIM_PLLCTRL);
+
+	reg |= ((p & 0x3f) << 13) | ((m & 0x1ff) << 4) | ((s & 0x7) << 1);
+
+	writel(reg, dsim->reg_base + S5P_DSIM_PLLCTRL);
+}
+
+void s5p_dsim_pll_freq_band(struct dsim_global *dsim, unsigned char freq_band)
+{
+	unsigned int reg = (readl(dsim->reg_base + S5P_DSIM_PLLCTRL)) &
+		~(0x1f << DSIM_FREQ_BAND_SHIFT);
+
+	reg |= ((freq_band & 0x1f) << DSIM_FREQ_BAND_SHIFT);
+
+	writel(reg, dsim->reg_base + S5P_DSIM_PLLCTRL);
+}
+
+void s5p_dsim_pll_freq(struct dsim_global *dsim, unsigned char pre_divider,
+	unsigned short main_divider, unsigned char scaler)
+{
+	unsigned int reg = (readl(dsim->reg_base + S5P_DSIM_PLLCTRL)) &
+		~(0x7ffff << 1);
+
+	reg |= (pre_divider & 0x3f) << 13 | (main_divider & 0x1ff) << 4 |
+		(scaler & 0x7) << 1;
+
+	writel(reg, dsim->reg_base + S5P_DSIM_PLLCTRL);
+}
+
+void s5p_dsim_pll_stable_time(struct dsim_global *dsim,
+	unsigned int lock_time)
+{
+	writel(lock_time, dsim->reg_base + S5P_DSIM_PLLTMR);
+}
+
+void s5p_dsim_enable_pll(struct dsim_global *dsim, unsigned char enable)
+{
+	unsigned int reg = (readl(dsim->reg_base + S5P_DSIM_PLLCTRL)) &
+		~(0x1 << DSIM_PLL_EN_SHIFT);
+
+	reg |= ((enable & 0x1) << DSIM_PLL_EN_SHIFT);
+
+	writel(reg, dsim->reg_base + S5P_DSIM_PLLCTRL);
+}
+
+void s5p_dsim_set_byte_clock_src(struct dsim_global *dsim, unsigned char src)
+{
+	unsigned int reg = (readl(dsim->reg_base + S5P_DSIM_CLKCTRL)) &
+		~(0x3 << DSIM_BYTE_CLK_SRC_SHIFT);
+
+	reg |= ((unsigned int) src) << DSIM_BYTE_CLK_SRC_SHIFT;
+
+	writel(reg, dsim->reg_base + S5P_DSIM_CLKCTRL);
+}
+
+void s5p_dsim_enable_byte_clock(struct dsim_global *dsim,
+	unsigned char enable)
+{
+	unsigned int reg = (readl(dsim->reg_base + S5P_DSIM_CLKCTRL)) &
+		~(1 << DSIM_BYTE_CLKEN_SHIFT);
+
+	reg |= enable << DSIM_BYTE_CLKEN_SHIFT;
+
+	writel(reg, dsim->reg_base + S5P_DSIM_CLKCTRL);
+}
+
+void s5p_dsim_set_esc_clk_prs(struct dsim_global *dsim, unsigned char enable,
+	unsigned short prs_val)
+{
+	unsigned int reg = (readl(dsim->reg_base + S5P_DSIM_CLKCTRL)) &
+		~(1 << DSIM_ESC_CLKEN_SHIFT) & ~(0xffff);
+
+	reg |= enable << DSIM_ESC_CLKEN_SHIFT;
+	if (enable)
+		reg |= prs_val;
+
+	writel(reg, dsim->reg_base + S5P_DSIM_CLKCTRL);
+}
+
+void s5p_dsim_enable_esc_clk_on_lane(struct dsim_global *dsim,
+	unsigned char lane_sel, unsigned char enable)
+{
+	unsigned int reg = readl(dsim->reg_base + S5P_DSIM_CLKCTRL);
+
+	if (enable) {
+		if (lane_sel & DSIM_LANE_CLOCK)
+			reg |= 1 << DSIM_LANE_ESC_CLKEN_SHIFT;
+		if (lane_sel & DSIM_LANE_DATA0)
+			reg |= 1 << (DSIM_LANE_ESC_CLKEN_SHIFT + 1);
+		if (lane_sel & DSIM_LANE_DATA1)
+			reg |= 1 << (DSIM_LANE_ESC_CLKEN_SHIFT + 2);
+		if (lane_sel & DSIM_LANE_DATA2)
+			reg |= 1 << (DSIM_LANE_ESC_CLKEN_SHIFT + 3);
+		if (lane_sel & DSIM_LANE_DATA2)
+			reg |= 1 << (DSIM_LANE_ESC_CLKEN_SHIFT + 4);
+	} else {
+		if (lane_sel & DSIM_LANE_CLOCK)
+			reg &= ~(1 << DSIM_LANE_ESC_CLKEN_SHIFT);
+		if (lane_sel & DSIM_LANE_DATA0)
+			reg &= ~(1 << (DSIM_LANE_ESC_CLKEN_SHIFT + 1));
+		if (lane_sel & DSIM_LANE_DATA1)
+			reg &= ~(1 << (DSIM_LANE_ESC_CLKEN_SHIFT + 2));
+		if (lane_sel & DSIM_LANE_DATA2)
+			reg &= ~(1 << (DSIM_LANE_ESC_CLKEN_SHIFT + 3));
+		if (lane_sel & DSIM_LANE_DATA2)
+			reg &= ~(1 << (DSIM_LANE_ESC_CLKEN_SHIFT + 4));
+	}
+
+	writel(reg, dsim->reg_base + S5P_DSIM_CLKCTRL);
+}
+
 
+
 
+void s5p_dsim_clear_interrupt(struct dsim_global *dsim, unsigned int int_src)
+{
+	unsigned int reg = readl(dsim->reg_base + S5P_DSIM_INTSRC);
+
+	reg |= int_src;
+

drivers/video/s5p_dsim_lowlevel.c new file +28 -0

+
+void s5p_dsim_wr_tx_header(struct dsim_global *dsim,
+	unsigned char di, unsigned char data0, unsigned char data1)
+{
+	unsigned int reg = (data1 << 16) | (data0 << 8) | ((di & 0x3f) << 0);
+
+	writel(reg, dsim->reg_base + S5P_DSIM_PKTHDR);
+}
+
+unsigned int _s5p_dsim_get_frame_done_status(struct dsim_global *dsim)
+{
+	unsigned int reg = readl(dsim->reg_base + S5P_DSIM_INTSRC);
+
+	return (reg & INTSRC_FRAME_DONE) ? 1 : 0;
+}
+
+void _s5p_dsim_clear_frame_done(struct dsim_global *dsim)
+{
+	unsigned int reg = readl(dsim->reg_base + S5P_DSIM_INTSRC);
+
+	writel(reg | INTSRC_FRAME_DONE, dsim->reg_base +
+		S5P_DSIM_INTSRC);
+}
+
+void s5p_dsim_wr_tx_data(struct dsim_global *dsim, unsigned int tx_data)
+{
+	writel(tx_data, dsim->reg_base + S5P_DSIM_PAYLOAD);
+}

drivers/video/s5p_dsim_lowlevel.h new file +17 -0

new file mode 100644
index 0000000..ff950ba
@@ -0,0 +1,101 @@
+/* linux/drivers/video/samsung/s5p_dsim_lowlevel.h
+ *
+ * Header file for Samsung MIPI-DSIM lowlevel driver.
+ *
+ * Copyright (c) 2009 Samsung Electronics
+ * InKi Dae <[email protected]>
+ *
+ * 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 _S5P_DSIM_LOWLEVEL_H
+#define _S5P_DSIM_LOWLEVEL_H
+
+struct dsim_global;
+

Quoted 53 lines

this patch addes MIPI-DSI Driver.

to use this driver, some structures below should be added to machine specific file.

struct dsim_config
- define clock info, data lane count and video mode info for MIPI-DSI Controller.

struct dsim_lcd_config
- define interface mode, channel ID, Pixel format and so on.

struct s5p_platform_dsim
- define callbacks for initializing D-PHY, MIPI reset and trigger releated interfaces of s3c-fb.c file.

Signed-off-by InKi Dae <inki.dae at samsung.com <mailto:[email protected]>>

Signed-off-by Kyungmin Park <[email protected]

<mailto:[email protected]>>
---

arch/arm/mach-s5pv210/include/mach/regs-clock.h +0 -0

index 2a25ab4..f716678 100644
@@ -162,6 +162,7 @@
 

?/* MIPI */
?#define S5P_MIPI_DPHY_EN ? ? ? ? ? ? (3)
+#define S5P_MIPI_M_RESETN ? ? ? ? ? ?(1 << 1)

?/* S5P_DAC_CONTROL */
?#define S5P_DAC_ENABLE ? ? ? ? ? ? ? ? ? ? ? (1)

arch/arm/plat-samsung/Makefile +0 -0

index b1d82cc..3cd43f2 100644
@@ -49,6 +49,9 @@ obj-$(CONFIG_S3C_DEV_RTC) ? += dev-rtc.o

?obj-$(CONFIG_SAMSUNG_DEV_ADC) ? ? ? ?+= dev-adc.o ?obj-$(CONFIG_SAMSUNG_DEV_TS) += dev-ts.o

arch/arm/plat-samsung/Makefile +3 -0

+# Device setup - MIPI-DSI
+obj-$(CONFIG_S5P_MIPI_DSI) ?+= setup-dsim.o
+

?# DMA support

?obj-$(CONFIG_S3C_DMA) ? ? ? ? ? ? ? ?+= dma.o

arch/arm/plat-samsung/include/plat/dsim.h new file +0 -0

new file mode 100644
index 0000000..28bc595

arch/arm/plat-samsung/include/plat/dsim.h

Quoted 10 lines

arch/arm/plat-samsung/include/plat/dsim.h new file +8 -0

@@ -0,0 +1,470 @@
 
 
+ * driver structure for mipi-dsi based lcd panel.
+ *
+ * this structure should be registered by lcd panel driver.
+ * mipi-dsi driver seeks lcd panel registered through name field
+ * and calls these callback functions in appropriate time.
+ */
+struct mipi_lcd_driver {
+ ? ? s8 ? ? ?name[64];

how about an 'char *' here instead of reserving 64bytes?

Quoted 9 lines

+ ? ? s32 ? ? (*init)(struct device *dev);
+ ? ? void ? ?(*display_on)(struct device *dev);
+ ? ? s32 ? ? (*set_link)(struct mipi_ddi_platform_data *pd);
+ ? ? s32 ? ? (*probe)(struct device *dev);
+ ? ? s32 ? ? (*remove)(struct device *dev);
+ ? ? void ? ?(*shutdown)(struct device *dev);
+ ? ? s32 ? ? (*suspend)(struct device *dev, pm_message_t mesg);
+ ? ? s32 ? ? (*resume)(struct device *dev);
+};

Some of this should be already covered under the existing lcd interface?

arch/arm/plat-samsung/include/plat/regs-dsim.h

Quoted 110 lines

arch/arm/plat-samsung/include/plat/mipi_ddi.h new file +98 -0

new file mode 100644
index 0000000..57ed613
@@ -0,0 +1,98 @@
+/* linux/arm/arch/mach-s5pc110/include/mach/mipi_ddi.h
+ *
+ * definitions for DDI based MIPI-DSI.
+ *
+ * Copyright (c) 2009 Samsung Electronics
+ * InKi Dae <[email protected]>
+ *
+ * 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 _MIPI_DDI_H
+#define _MIPI_DDI_H
+
+enum mipi_ddi_interface {
+ ? ? RGB_IF = 0x4000,
+ ? ? I80_IF = 0x8000,
+ ? ? YUV_601 = 0x10000,
+ ? ? YUV_656 = 0x20000,
+ ? ? MIPI_VIDEO = 0x1000,
+ ? ? MIPI_COMMAND = 0x2000,
+};
+
+enum mipi_ddi_panel_select {
+ ? ? DDI_MAIN_LCD = 0,
+ ? ? DDI_SUB_LCD = 1,
+};
+
+enum mipi_ddi_model {
+ ? ? S6DR117 = 0,
+};
+
+enum mipi_ddi_parameter {
+ ? ? /* DSIM video interface parameter */
+ ? ? DSI_VIRTUAL_CH_ID = 0,
+ ? ? DSI_FORMAT = 1,
+ ? ? DSI_VIDEO_MODE_SEL = 2,
+};
+
+struct lcd_device;
+struct fb_info;
+
+struct mipi_ddi_platform_data {
+ ? ? void *dsim_data;
+ ? ? /*
+ ? ? ?* it is used for command mode lcd panel and
+ ? ? ?* when all contents of framebuffer in panel module are transfered
+ ? ? ?* to lcd panel it occurs te signal.
+ ? ? ?*
+ ? ? ?* note:
+ ? ? ?* - in case of command mode(cpu mode), it should be triggered only
+ ? ? ?* ? when TE signal of lcd panel and frame done interrupt of display
+ ? ? ?* ? controller or mipi controller occurs.
+ ? ? ?*/
+ ? ? unsigned int te_irq;
+
+ ? ? /*
+ ? ? ?* it is used for PM stable time at te interrupt handler and
+ ? ? ?* could be used according to lcd panel characteristic or not.
+ ? ? ?*/
+ ? ? unsigned int resume_complete;
+
+ ? ? int (*lcd_reset) (struct lcd_device *ld);
+ ? ? int (*lcd_power_on) (struct lcd_device *ld, int enable);
+ ? ? int (*backlight_on) (int enable);
+
+ ? ? /* transfer command to lcd panel at LP mode. */
+ ? ? int (*cmd_write) (void *dsim_data, unsigned int data_id,
+ ? ? ? ? ? ? unsigned int data0, unsigned int data1);
+ ? ? int (*cmd_read) (void *dsim_data, unsigned int data_id,
+ ? ? ? ? ? ? unsigned int data0, unsigned int data1);
+ ? ? /*
+ ? ? ?* get the status that all screen data have been transferred
+ ? ? ?* to mipi-dsi.
+ ? ? ?*/
+ ? ? int (*get_dsim_frame_done) (void *dsim_data);
+ ? ? int (*clear_dsim_frame_done) (void *dsim_data);
+
+ ? ? /*
+ ? ? ?* changes mipi transfer mode to LP or HS mode.
+ ? ? ?*
+ ? ? ?* LP mode needs when some commands like gamma values transfers
+ ? ? ?* to lcd panel.
+ ? ? ?*/
+ ? ? int (*change_dsim_transfer_mode) (int mode);
+
+ ? ? /* get frame done status of display controller. */
+ ? ? int (*get_fb_frame_done) (struct fb_info *info);
+ ? ? /* trigger display controller in case of cpu mode. */
+ ? ? void (*trigger) (struct fb_info *info);
+
+ ? ? unsigned int reset_delay;
+ ? ? unsigned int power_on_delay;
+ ? ? unsigned int power_off_delay;
+};
+
+#endif /* _MIPI_DDI_H */

arch/arm/plat-samsung/include/plat/regs-dsim.h new file +0 -0

new file mode 100644
index 0000000..dc83089
@@ -0,0 +1,281 @@

?+

Quoted 23 lines

arch/arm/plat-samsung/include/plat/regs-dsim.h new file +23 -0

+/* S5P_DSIM_TIMEOUT */
+#define DSIM_LPDR_TOUT_SHIFT (0)
+#define DSIM_BTA_TOUT_SHIFT ?(16)
+#define DSIM_LPDR_TOUT(x) ? ?(((x) & 0xffff) << DSIM_LPDR_TOUT_SHIFT)
+#define DSIM_BTA_TOUT(x) ? ? (((x) & 0xff) << DSIM_BTA_TOUT_SHIFT)
+
+/* S5P_DSIM_CLKCTRL */
+#define DSIM_ESC_PRESCALER_SHIFT ? ? (0)
+#define DSIM_LANE_ESC_CLKEN_SHIFT ? ?(19)
+#define DSIM_BYTE_CLKEN_SHIFT ? ? ? ? ? ? ? ?(24)
+#define DSIM_BYTE_CLK_SRC_SHIFT ? ? ? ? ? ? ?(25)
+#define DSIM_PLL_BYPASS_SHIFT ? ? ? ? ? ? ? ?(27)
+#define DSIM_ESC_CLKEN_SHIFT ? ? ? ? (28)
+#define DSIM_TX_REQUEST_HSCLK_SHIFT ?(31)
+#define DSIM_ESC_PRESCALER(x) ? ? ? ? ? ? ? ?(((x) & 0xffff) << \
+ ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? DSIM_ESC_PRESCALER_SHIFT)
+#define DSIM_LANE_ESC_CLKEN(x) ? ? ? ? ? ? ? (((x) & 0x1f) << \
+ ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? DSIM_LANE_ESC_CLKEN_SHIFT)
+#define DSIM_BYTE_CLK_ENABLE ? ? ? ? (1 << DSIM_BYTE_CLKEN_SHIFT)
+#define DSIM_BYTE_CLK_DISABLE ? ? ? ? ? ? ? ?(0 << DSIM_BYTE_CLKEN_SHIFT)
+#define DSIM_BYTE_CLKSRC(x) ? ? ? ? ?(((x) & 0x3) << DSIM_BYTE_CLK_SRC_SHIFT)
+#define DSIM_PLL_BYPASS_PLL ? ? ? ? ?(0 << DSIM_PLL_BYPASS_SHIFT)
+#define DSIM_PLL_BYPASS_EXTERNAL ? ? (1 << DSIM_PLL_BYPASS_SHIFT)

arch/arm/plat-samsung/include/plat/regs-dsim.h

Quoted 10 lines

arch/arm/plat-samsung/include/plat/regs-dsim.h new file +8 -0

+#define DSIM_ESC_CLKEN_ENABLE ? ? ? ? ? ? ? ?(1 << DSIM_ESC_CLKEN_SHIFT)
+#define DSIM_ESC_CLKEN_DISABLE ? ? ? ? ? ? ? (0 << DSIM_ESC_CLKEN_SHIFT)
 
 
+
+#include <plat/dsim.h>
+#include <plat/clock.h>
+#include <plat/regs-dsim.h>
+
+static int s5p_dsim_enable_d_phy(struct dsim_global *dsim, unsigned int enable)

I suppose enable should be bool,

arch/arm/plat-samsung/include/plat/regs-dsim.h

Quoted 7 lines

arch/arm/plat-samsung/include/plat/regs-dsim.h new file +7 -0

+{
+ ? ? unsigned int reg;
+
+ ? ? if (dsim == NULL) {
+ ? ? ? ? ? ? printk(KERN_ERR "dsim is NULL.\n");
+ ? ? ? ? ? ? return -EFAULT;
+ ? ? }

Is it likely to be NULL? If unlikely then a simple warning and return -EFAULT.

Quoted 2 lines

+
+ ? ? reg = (readl(S5P_MIPI_CONTROL)) & ~(1 << 0);

extra () not really needed

Quoted 47 lines

+ ? ? reg |= (enable << 0);
+ ? ? writel(reg, S5P_MIPI_CONTROL);

arch/arm/plat-samsung/include/plat/regs-dsim.h new file +45 -0

+
+ ? ? dev_dbg(dsim->dev, "%s : %x\n", __func__, reg);
+
+ ? ? return 0;
+}
+
+static int s5p_dsim_enable_dsi_master(struct dsim_global *dsim,
+ ? ? unsigned int enable)
+{
+ ? ? unsigned int reg;
+
+ ? ? if (dsim == NULL) {
+ ? ? ? ? ? ? printk(KERN_ERR "dsim is NULL.\n");
+ ? ? ? ? ? ? return -EFAULT;
+ ? ? }
+
+ ? ? reg = (readl(S5P_MIPI_CONTROL)) & ~(1 << 2);
+ ? ? reg |= (enable << 2);
+ ? ? writel(reg, S5P_MIPI_CONTROL);
+
+ ? ? dev_dbg(dsim->dev, "%s : %x\n", __func__, reg);
+
+ ? ? return 0;
+}
+
+int s5p_dsim_part_reset(struct dsim_global *dsim)
+{
+ ? ? if (dsim == NULL) {
+ ? ? ? ? ? ? printk(KERN_ERR "dsim is NULL.\n");
+ ? ? ? ? ? ? return -EFAULT;
+ ? ? }
+
+ ? ? writel(S5P_MIPI_M_RESETN, S5P_MIPI_PHY_CON0);
+
+ ? ? dev_dbg(dsim->dev, "%s\n", __func__);
+
+ ? ? return 0;
+}
+
+int s5p_dsim_init_d_phy(struct dsim_global *dsim)
+{
+ ? ? if (dsim == NULL) {
+ ? ? ? ? ? ? printk(KERN_ERR "dsim is NULL.\n");
+ ? ? ? ? ? ? return -EFAULT;
+ ? ? }

arch/arm/plat-samsung/include/plat/regs-dsim.h

Quoted 6 lines

arch/arm/plat-samsung/include/plat/regs-dsim.h new file +6 -0

+
+ ? ? /* enable D-PHY */
+ ? ? s5p_dsim_enable_d_phy(dsim, 1);
+
+ ? ? /* enable DSI master block */
+ ? ? s5p_dsim_enable_dsi_master(dsim, 1);

you ould probably have omitted the comments on these.

arch/arm/plat-samsung/include/plat/regs-dsim.h

Quoted 8 lines

arch/arm/plat-samsung/include/plat/regs-dsim.h new file +8 -0

+
+ ? ? dev_dbg(dsim->dev, "%s\n", __func__);
+
+ ? ? return 0;
+}
+
+int s5p_dsim_mipi_power(struct dsim_global *dsim, void *p_mipi_1_1v,
+ ? ? void *p_mipi_1_8v, int enable)

enable could be bool.

Quoted 2 lines

+{
+ ? ? struct regulator *r_mipi_1_1v = NULL, *r_mipi_1_8v = NULL;

No need to init to NULL when you just cast them a few lines done.

Quoted 4 lines

+ ? ? int ret = -1;
+
+ ? ? r_mipi_1_1v = (struct regulator *) p_mipi_1_1v;
+ ? ? r_mipi_1_8v = (struct regulator *) p_mipi_1_8v;

It would be better just to call these regulators and stick with one type for these.

Quoted 5 lines

+ ? ? if (dsim == NULL) {
+ ? ? ? ? ? ? printk(KERN_ERR "dsim is NULL.\n");
+ ? ? ? ? ? ? return -EFAULT;
+ ? ? }

this is getting repetitive, is it really necessary?

Quoted 136 lines

arch/arm/plat-samsung/include/plat/regs-dsim.h new file +44 -0

+
+ ? ? if (IS_ERR(r_mipi_1_1v) || IS_ERR(r_mipi_1_8v)) {
+ ? ? ? ? ? ? dev_err(dsim->dev, "r_mipi_1_1v or r_mipi_1_8v is NULL.\n");
+ ? ? ? ? ? ? return -EINVAL;
+ ? ? }
+
+ ? ? if (enable) {
+ ? ? ? ? ? ? if (r_mipi_1_1v)
+ ? ? ? ? ? ? ? ? ? ? ret = regulator_enable(r_mipi_1_1v);
+
+ ? ? ? ? ? ? if (ret < 0) {
+ ? ? ? ? ? ? ? ? ? ? dev_err(dsim->dev,
+ ? ? ? ? ? ? ? ? ? ? ? ? ? ? "failed to enable regulator mipi_1_1v.\n");
+ ? ? ? ? ? ? ? ? ? ? return ret;
+ ? ? ? ? ? ? }
+
+ ? ? ? ? ? ? if (r_mipi_1_8v)
+ ? ? ? ? ? ? ? ? ? ? ret = regulator_enable(r_mipi_1_8v);
+
+ ? ? ? ? ? ? if (ret < 0) {
+ ? ? ? ? ? ? ? ? ? ? dev_err(dsim->dev,
+ ? ? ? ? ? ? ? ? ? ? ? ? ? ? "failed to enable regulator mipi_1_8v.\n");
+ ? ? ? ? ? ? ? ? ? ? return ret;
+ ? ? ? ? ? ? }
+ ? ? } else {
+ ? ? ? ? ? ? if (r_mipi_1_1v)
+ ? ? ? ? ? ? ? ? ? ? ret = regulator_force_disable(r_mipi_1_1v);
+ ? ? ? ? ? ? if (ret < 0) {
+ ? ? ? ? ? ? ? ? ? ? dev_err(dsim->dev,
+ ? ? ? ? ? ? ? ? ? ? ? ? ? ? "failed to disable regulator mipi_1_1v.\n");
+ ? ? ? ? ? ? ? ? ? ? return ret;
+ ? ? ? ? ? ? }
+
+ ? ? ? ? ? ? if (r_mipi_1_8v)
+ ? ? ? ? ? ? ? ? ? ? ret = regulator_force_disable(r_mipi_1_8v);
+ ? ? ? ? ? ? if (ret < 0) {
+ ? ? ? ? ? ? ? ? ? ? dev_err(dsim->dev,
+ ? ? ? ? ? ? ? ? ? ? ? ? ? ? "failed to disable regulator mipi_1_8v.\n");
+ ? ? ? ? ? ? ? ? ? ? return ret;
+ ? ? ? ? ? ? }
+ ? ? }
+
+ ? ? return ret;
+}

drivers/video/Kconfig +0 -0

index 3d94a14..c916ac1 100644
@@ -1930,7 +1930,7 @@ config FB_TMIO_ACCELL
 

?config FB_S3C
? ? ? tristate "Samsung S3C framebuffer support"
- ? ? depends on FB && ARCH_S3C64XX
+ ? ? depends on FB && (ARCH_S3C64XX || ARCH_S5PV210) ? ? ? select FB_CFB_FILLRECT
? ? ? select FB_CFB_COPYAREA
? ? ? select FB_CFB_IMAGEBLIT

drivers/video/Kconfig +0 -0

@@ -1975,6 +1975,13 @@ config FB_S3C2410_DEBUG

? ? ? ? Turn on debugging messages. Note that you can set/unset at run time ? ? ? ? through sysfs

drivers/video/Kconfig +7 -0

+config S5P_MIPI_DSI
+ ? ? tristate "Samsung SoC MIPI-DSI support."
+ ? ? depends on FB_S3C && ARCH_S5PV210
+ ? ? default n
+ ? ? ---help---
+ ? ? ? This enables support for MIPI-DSI device.
+

?config FB_NUC900
? ? ? ? ?bool "NUC900 LCD framebuffer support"
? ? ? ? ?depends on FB && ARCH_W90X900

drivers/video/Makefile +0 -0

index ddc2af2..d841433 100644
@@ -115,6 +115,8 @@ obj-$(CONFIG_FB_SH7760) ? ? ? ? ? ? += sh7760fb.o

?obj-$(CONFIG_FB_IMX) ? ? ? ? ? ? ?+= imxfb.o ?obj-$(CONFIG_FB_S3C) ? ? ? ? ? += s3c-fb.o ?obj-$(CONFIG_FB_S3C2410) ? ? ? += s3c2410fb.o +obj-$(CONFIG_S5P_MIPI_DSI) ? ? += s5p-dsim.o s5p_dsim_common.o \
+ ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? s5p_dsim_lowlevel.o ?obj-$(CONFIG_FB_FSL_DIU) ? ? ? += fsl-diu-fb.o ?obj-$(CONFIG_FB_COBALT) ? ? ? ? ? += cobalt_lcdfb.o ?obj-$(CONFIG_FB_PNX4008_DUM) ? += pnx4008/

drivers/video/s5p-dsim.c new file +46 -0

new file mode 100644
index 0000000..96893bc
@@ -0,0 +1,483 @@
+/* linux/drivers/video/samsung/s5p-dsim.c
+ *
+ * Samsung MIPI-DSIM driver.
+ *
+ * InKi Dae, <[email protected]>
+ *
+ * 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/regulator/consumer.h>
+#include <linux/notifier.h>
+
+#include <plat/fb.h>
+#include <plat/regs-dsim.h>
+#include <plat/dsim.h>
+#include <plat/mipi_ddi.h>
+
+#include <mach/map.h>
+
+#include "s5p_dsim_common.h"
+
+struct mipi_lcd_info {
+ ? ? struct list_head ? ? ? ?list;
+ ? ? struct mipi_lcd_driver ?*mipi_drv;
+};
+
+static LIST_HEAD(lcd_info_list);

drivers/video/s5p-dsim.c line 56

Quoted 10 lines

drivers/video/s5p-dsim.c new file +10 -0

+static DEFINE_MUTEX(mipi_lock);
+
+struct dsim_global dsim;
+
+struct s5p_platform_dsim *to_dsim_plat(struct device *dev)
+{
+ ? ? struct platform_device *pdev = to_platform_device(dev);
+
+ ? ? return (struct s5p_platform_dsim *)pdev->dev.platform_data;
+}

that's return dev->platform_data.

drivers/video/s5p-dsim.c

Quoted 10 lines

drivers/video/s5p-dsim.c new file +10 -0

+/*
+ * notifier callback function for fb_blank
+ * - this function would be called by device specific fb_blank.
+ */
+static int s5p_dsim_notifier_callback(struct notifier_block *self,
+ ? ? unsigned long event, void *data)
+{
+ ? ? pm_message_t pm;
+
+ ? ? pm.event = 0;

do we really need to produce this pm structure.

Quoted 65 lines

drivers/video/s5p-dsim.c new file +65 -0

+ ? ? switch (event) {
+ ? ? case FB_BLANK_UNBLANK:
+ ? ? case FB_BLANK_NORMAL:
+ ? ? ? ? ? ? if (dsim.pd->mipi_power)
+ ? ? ? ? ? ? ? ? ? ? dsim.pd->mipi_power(&dsim, (void *) dsim.r_mipi_1_1v,
+ ? ? ? ? ? ? ? ? ? ? ? ? ? ? (void *) dsim.r_mipi_1_8v, 1);
+
+ ? ? ? ? ? ? clk_enable(dsim.clock);
+
+ ? ? ? ? ? ? if (dsim.mipi_drv->resume)
+ ? ? ? ? ? ? ? ? ? ? dsim.mipi_drv->resume(dsim.dev);
+
+ ? ? ? ? ? ? s5p_dsim_init_dsim(&dsim);
+ ? ? ? ? ? ? s5p_dsim_init_link(&dsim);
+
+ ? ? ? ? ? ? s5p_dsim_set_hs_enable(&dsim);
+ ? ? ? ? ? ? s5p_dsim_set_data_transfer_mode(&dsim,
+ ? ? ? ? ? ? ? ? ? ? DSIM_TRANSFER_BYCPU, 1);
+
+ ? ? ? ? ? ? /* it needs delay for stabilization */
+ ? ? ? ? ? ? mdelay(dsim.pd->delay_for_stabilization);
+
+ ? ? ? ? ? ? if (dsim.mipi_drv->init)
+ ? ? ? ? ? ? ? ? ? ? dsim.mipi_drv->init(dsim.dev);
+ ? ? ? ? ? ? else
+ ? ? ? ? ? ? ? ? ? ? dev_warn(dsim.dev, "init func is null.\n");
+
+ ? ? ? ? ? ? s5p_dsim_set_display_mode(&dsim, dsim.dsim_lcd_info, NULL);
+
+ ? ? ? ? ? ? s5p_dsim_set_data_transfer_mode(&dsim, DSIM_TRANSFER_BYLCDC, 1);
+ ? ? ? ? ? ? dsim.mipi_ddi_pd->resume_complete = 1;
+
+ ? ? ? ? ? ? dev_dbg(dsim.dev, "FB_BLANK_NORMAL or UNBLANK.\n");
+
+ ? ? ? ? ? ? break;
+ ? ? case FB_BLANK_POWERDOWN:
+ ? ? ? ? ? ? dsim.mipi_ddi_pd->resume_complete = 0;
+
+ ? ? ? ? ? ? if (dsim.mipi_drv->suspend)
+ ? ? ? ? ? ? ? ? ? ? dsim.mipi_drv->suspend(dsim.dev, pm);
+
+ ? ? ? ? ? ? clk_disable(dsim.clock);
+
+ ? ? ? ? ? ? if (dsim.pd->mipi_power)
+ ? ? ? ? ? ? ? ? ? ? dsim.pd->mipi_power(&dsim, (void *) dsim.r_mipi_1_1v,
+ ? ? ? ? ? ? ? ? ? ? ? ? ? ? (void *) dsim.r_mipi_1_8v, 0);
+
+ ? ? ? ? ? ? dev_dbg(dsim.dev, "FB_BLANK_POWERDOWN.\n");
+ ? ? ? ? ? ? break;
+ ? ? default:
+ ? ? ? ? ? ? dev_warn(dsim.dev, "unknown FB_BLANK command.\n");
+ ? ? ? ? ? ? break;
+ ? ? }
+
+ ? ? return 0;
+}
+
+static int s5p_dsim_register_notif(struct device *dev)
+{
+ ? ? memset(&dsim.s3cfb_notif, 0, sizeof(struct notifier_block));
+ ? ? dsim.s3cfb_notif.notifier_call = s5p_dsim_notifier_callback;
+
+ ? ? return 0/*s3cfb_register_client(&dsim.s3cfb_notif)*/;
+}
+

drivers/video/s5p-dsim.c line 141

Quoted 10 lines

drivers/video/s5p-dsim.c new file +10 -0

+static irqreturn_t s5p_dsim_interrupt_handler(int irq, void *dev_id)
+{
+ ? ? disable_irq(irq);
+
+ ? ? /* additional work. */
+
+ ? ? enable_irq(irq);
+
+ ? ? return IRQ_HANDLED;
+}

?

Quoted 83 lines

drivers/video/s5p-dsim.c new file +83 -0

+
+int s5p_dsim_register_lcd_driver(struct mipi_lcd_driver *lcd_drv)
+{
+ ? ? struct mipi_lcd_info ? ?*lcd_info = NULL;
+
+ ? ? lcd_info = kmalloc(sizeof(struct mipi_lcd_info), GFP_KERNEL);
+ ? ? if (lcd_info == NULL)
+ ? ? ? ? ? ? return -ENOMEM;
+
+ ? ? lcd_info->mipi_drv = kmalloc(sizeof(struct mipi_lcd_driver),
+ ? ? ? ? ? ? GFP_KERNEL);
+ ? ? if (lcd_info->mipi_drv == NULL)
+ ? ? ? ? ? ? return -ENOMEM;
+
+
+ ? ? memcpy(lcd_info->mipi_drv, lcd_drv, sizeof(struct mipi_lcd_driver));
+
+ ? ? mutex_lock(&mipi_lock);
+ ? ? list_add_tail(&lcd_info->list, &lcd_info_list);
+ ? ? mutex_unlock(&mipi_lock);
+
+ ? ? dev_dbg(dsim.dev, "registered panel driver(%s) to mipi-dsi driver.\n",
+ ? ? ? ? ? ? lcd_drv->name);
+
+ ? ? return 0;
+}
+
+/*
+ * This function is wrapper for changing transfer mode.
+ * It is used to in panel driver before and after changing gamma value.
+ */
+static int s5p_dsim_change_transfer_mode(int mode)
+{
+ ? ? if (mode < 0 || mode > 1) {
+ ? ? ? ? ? ? dev_err(dsim.dev, "mode range should be 0 or 1.\n");
+ ? ? ? ? ? ? return -EFAULT;
+ ? ? }
+
+ ? ? if (mode == 0)
+ ? ? ? ? ? ? s5p_dsim_set_data_transfer_mode(&dsim,
+ ? ? ? ? ? ? ? ? ? ? DSIM_TRANSFER_BYCPU, mode);
+ ? ? else
+ ? ? ? ? ? ? s5p_dsim_set_data_transfer_mode(&dsim,
+ ? ? ? ? ? ? ? ? ? ? DSIM_TRANSFER_BYLCDC, mode);
+
+ ? ? return 0;
+}
+
+struct mipi_lcd_driver *scan_mipi_driver(const char *name)
+{
+ ? ? struct mipi_lcd_info *lcd_info;
+ ? ? struct mipi_lcd_driver *mipi_drv = NULL;
+
+ ? ? mutex_lock(&mipi_lock);
+
+ ? ? dev_dbg(dsim.dev, "find lcd panel driver(%s).\n",
+ ? ? ? ? ? ? name);
+
+ ? ? list_for_each_entry(lcd_info, &lcd_info_list, list) {
+ ? ? ? ? ? ? mipi_drv = lcd_info->mipi_drv;
+
+ ? ? ? ? ? ? if ((strcmp(mipi_drv->name, name)) == 0) {
+ ? ? ? ? ? ? ? ? ? ? mutex_unlock(&mipi_lock);
+ ? ? ? ? ? ? ? ? ? ? dev_dbg(dsim.dev, "found!!!(%s).\n", mipi_drv->name);
+ ? ? ? ? ? ? ? ? ? ? return mipi_drv;
+ ? ? ? ? ? ? }
+ ? ? }
+
+ ? ? dev_warn(dsim.dev, "failed to find lcd panel driver(%s).\n",
+ ? ? ? ? ? ? name);
+
+ ? ? mutex_unlock(&mipi_lock);
+
+ ? ? return NULL;
+}
+
+static int s5p_dsim_probe(struct platform_device *pdev)
+{
+ ? ? struct resource *res;
+ ? ? int ret = -1;
+
+ ? ? dsim.pd = to_dsim_plat(&pdev->dev);
+ ? ? dsim.dev = &pdev->dev;

drivers/video/s5p-dsim.c line 230

Quoted 6 lines

drivers/video/s5p-dsim.c new file +6 -0

+
+ ? ? /* set dsim config data, dsim lcd config data and lcd panel data. */
+ ? ? dsim.dsim_info = dsim.pd->dsim_info;
+ ? ? dsim.dsim_lcd_info = dsim.pd->dsim_lcd_info;
+ ? ? dsim.lcd_panel_info =
+ ? ? ? ? ? ? (struct fb_videomode *) dsim.dsim_lcd_info->lcd_panel_info;

why isn't this in the correct type to begin with.

drivers/video/s5p-dsim.c line 233

Quoted 3 lines

drivers/video/s5p-dsim.c new file +3 -0

+ ? ? dsim.mipi_ddi_pd =
+ ? ? ? ? ? ? (struct mipi_ddi_platform_data *)
+ ? ? ? ? ? ? ? ? ? ? dsim.dsim_lcd_info->mipi_ddi_pd;

and again.

Quoted 27 lines

drivers/video/s5p-dsim.c new file +27 -0

+ ? ? dsim.mipi_ddi_pd->resume_complete = 0;
+
+ ? ? dsim.r_mipi_1_1v = regulator_get(&pdev->dev, "VMIPI_1.1V");
+ ? ? if (IS_ERR(dsim.r_mipi_1_1v)) {
+ ? ? ? ? ? ? dev_err(&pdev->dev, "failed to get regulator VMIPI_1.1V.\n");
+ ? ? ? ? ? ? goto regulator_get_err;
+ ? ? }
+
+ ? ? dsim.r_mipi_1_8v = regulator_get(&pdev->dev, "VMIPI_1.8V");
+ ? ? if (IS_ERR(dsim.r_mipi_1_8v)) {
+ ? ? ? ? ? ? dev_err(&pdev->dev, "failed to get regulator VMIPI_1.8V.\n");
+ ? ? ? ? ? ? goto regulator_get_err;
+ ? ? }
+
+ ? ? /* clock */
+ ? ? dsim.clock = clk_get(&pdev->dev, dsim.pd->clk_name);
+ ? ? if (IS_ERR(dsim.clock)) {
+ ? ? ? ? ? ? dev_err(&pdev->dev, "failed to get dsim clock source\n");
+ ? ? ? ? ? ? return -EINVAL;
+ ? ? }
+
+ ? ? clk_enable(dsim.clock);
+
+ ? ? /* io memory */
+ ? ? res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ ? ? if (!res) {
+ ? ? ? ? ? ? dev_err(&pdev->dev, "failed to get io memory region\n");

drivers/video/s5p-dsim.c line 267

Quoted 7 lines

drivers/video/s5p-dsim.c new file +7 -0

+ ? ? ? ? ? ? ret = -EINVAL;
+ ? ? ? ? ? ? goto err_clk_disable;
+ ? ? }
+
+ ? ? /* request mem region */
+ ? ? res = request_mem_region(res->start,
+ ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?res->end - res->start + 1, pdev->name);

resource_size()

drivers/video/s5p-dsim.c line 276

Quoted 9 lines

drivers/video/s5p-dsim.c new file +9 -0

+ ? ? if (!res) {
+ ? ? ? ? ? ? dev_err(&pdev->dev, "failed to request io memory region\n");
+ ? ? ? ? ? ? ret = -EINVAL;
+ ? ? ? ? ? ? goto err_clk_disable;
+ ? ? }
+
+ ? ? /* ioremap for register block */
+ ? ? dsim.reg_base = (unsigned int) ioremap(res->start,
+ ? ? ? ? ? ? res->end - res->start + 1);

ARGH. dsim.reg_base should be 'void __iomem *'

Quoted 7 lines

drivers/video/s5p-dsim.c new file +7 -0

+ ? ? if (!dsim.reg_base) {
+ ? ? ? ? ? ? dev_err(&pdev->dev, "failed to remap io region\n");
+ ? ? ? ? ? ? ret = -EINVAL;
+ ? ? ? ? ? ? goto err_clk_disable;
+ ? ? }
+
+ ? ? /* it is used for MIPI-DSI based lcd panel driver. */

drivers/video/s5p-dsim.c line 293

Quoted 10 lines

drivers/video/s5p-dsim.c new file +10 -0

+ ? ? dsim.mipi_ddi_pd->dsim_data = (void *)&dsim;
+
+ ? ? /*
+ ? ? ?* it uses frame done interrupt handler
+ ? ? ?* only in case of MIPI Video mode.
+ ? ? ?*/
+ ? ? if (dsim.dsim_lcd_info->e_interface == DSIM_VIDEO) {
+ ? ? ? ? ? ? dsim.irq = platform_get_irq(pdev, 0);
+ ? ? ? ? ? ? if (request_irq(dsim.irq, s5p_dsim_interrupt_handler,
+ ? ? ? ? ? ? ? ? ? ? ? ? ? ? IRQF_TRIGGER_RISING, "mipi-dsi", &dsim)) {

do internal interrupts really need a trigger flag?

Quoted 24 lines

drivers/video/s5p-dsim.c new file +24 -0

+ ? ? ? ? ? ? ? ? ? ? dev_err(&pdev->dev, "request_irq failed.\n");
+ ? ? ? ? ? ? ? ? ? ? goto err_trigger_irq;
+ ? ? ? ? ? ? }
+ ? ? }
+
+ ? ? if (dsim.pd->mipi_power)
+ ? ? ? ? ? ? dsim.pd->mipi_power(&dsim, (void *) dsim.r_mipi_1_1v,
+ ? ? ? ? ? ? ? ? ? ? (void *) dsim.r_mipi_1_8v, 1);
+ ? ? else {
+ ? ? ? ? ? ? dev_err(&pdev->dev, "mipi_power is NULL.\n");
+ ? ? ? ? ? ? goto mipi_power_err;
+ ? ? }
+
+ ? ? /* find lcd panel driver registered to mipi-dsi driver. */
+ ? ? dsim.mipi_drv = scan_mipi_driver(dsim.pd->lcd_panel_name);
+ ? ? if (dsim.mipi_drv == NULL) {
+ ? ? ? ? ? ? dev_err(&pdev->dev, "mipi_drv is NULL.\n");
+ ? ? ? ? ? ? goto mipi_drv_err;
+ ? ? }
+
+ ? ? /* register callback functions that lcd panel driver needs. */
+ ? ? dsim.mipi_ddi_pd->cmd_write = s5p_dsim_wr_data;
+ ? ? dsim.mipi_ddi_pd->cmd_read = NULL;
+ ? ? dsim.mipi_ddi_pd->get_dsim_frame_done =

drivers/video/s5p-dsim.c line 323

Quoted 6 lines

drivers/video/s5p-dsim.c new file +6 -0

+ ? ? ? ? ? ? s5p_dsim_get_frame_done_status;
+ ? ? dsim.mipi_ddi_pd->clear_dsim_frame_done = s5p_dsim_clear_frame_done;
+ ? ? dsim.mipi_ddi_pd->change_dsim_transfer_mode =
+ ? ? ? ? ? ? s5p_dsim_change_transfer_mode;
+ ? ? dsim.mipi_ddi_pd->get_fb_frame_done = dsim.pd->get_fb_frame_done;
+ ? ? dsim.mipi_ddi_pd->trigger = dsim.pd->trigger;

this looks like it should have been in a struture to be copied.

Quoted 203 lines

drivers/video/s5p-dsim.c new file +156 -0

+ ? ? /* set lcd panel driver link */
+ ? ? ret = dsim.mipi_drv->set_link(dsim.mipi_ddi_pd);
+ ? ? if (ret < 0) {
+ ? ? ? ? ? ? dev_err(&pdev->dev, "failed to set link.\n");
+ ? ? ? ? ? ? goto mipi_drv_err;
+ ? ? }
+
+ ? ? dsim.mipi_drv->probe(&pdev->dev);
+
+ ? ? s5p_dsim_init_dsim(&dsim);
+ ? ? s5p_dsim_init_link(&dsim);
+
+ ? ? s5p_dsim_set_hs_enable(&dsim);
+ ? ? s5p_dsim_set_data_transfer_mode(&dsim, DSIM_TRANSFER_BYCPU, 1);
+
+ ? ? /* it needs delay for stabilization */
+ ? ? mdelay(dsim.pd->delay_for_stabilization);
+
+ ? ? /* initialize lcd panel */
+ ? ? if (dsim.mipi_drv->init)
+ ? ? ? ? ? ? dsim.mipi_drv->init(&pdev->dev);
+ ? ? else
+ ? ? ? ? ? ? dev_warn(&pdev->dev, "init func is null.\n");
+
+ ? ? if (dsim.mipi_drv->display_on)
+ ? ? ? ? ? ? dsim.mipi_drv->display_on(&pdev->dev);
+ ? ? else
+ ? ? ? ? ? ? dev_warn(&pdev->dev, "display_on func is null.\n");
+
+ ? ? s5p_dsim_set_display_mode(&dsim, dsim.dsim_lcd_info, NULL);
+
+ ? ? s5p_dsim_set_data_transfer_mode(&dsim, DSIM_TRANSFER_BYLCDC, 1);
+
+ ? ? s5p_dsim_register_notif(&pdev->dev);
+
+ ? ? /* in case of command mode, trigger. */
+ ? ? if (dsim.dsim_lcd_info->e_interface == DSIM_COMMAND) {
+ ? ? ? ? ? ? if (dsim.pd->trigger)
+ ? ? ? ? ? ? ? ? ? ? dsim.pd->trigger(registered_fb[0]);
+ ? ? ? ? ? ? else
+ ? ? ? ? ? ? ? ? ? ? dev_warn(&pdev->dev, "trigger is null.\n");
+ ? ? }
+
+ ? ? dev_info(&pdev->dev, "mipi-dsi driver(%s mode) has been probed.\n",
+ ? ? ? ? ? ? (dsim.dsim_lcd_info->e_interface == DSIM_COMMAND) ?
+ ? ? ? ? ? ? ? ? ? ? "CPU" : "RGB");
+
+ ? ? return 0;
+
+err_trigger_irq:
+mipi_drv_err:
+ ? ? dsim.pd->mipi_power(&dsim, (void *) dsim.r_mipi_1_1v,
+ ? ? ? ? ? ? (void *) dsim.r_mipi_1_8v, 0);
+
+mipi_power_err:
+ ? ? iounmap((void __iomem *) dsim.reg_base);
+
+err_clk_disable:
+ ? ? clk_disable(dsim.clock);
+
+regulator_get_err:
+
+ ? ? return ret;
+
+}
+
+static int s5p_dsim_remove(struct platform_device *pdev)
+{
+ ? ? return 0;
+}
+
+#ifdef CONFIG_PM
+int s5p_dsim_suspend(struct platform_device *pdev, pm_message_t state)
+{
+ ? ? dsim.mipi_ddi_pd->resume_complete = 0;
+
+ ? ? if (dsim.mipi_drv->suspend)
+ ? ? ? ? ? ? dsim.mipi_drv->suspend(&pdev->dev, state);
+
+ ? ? clk_disable(dsim.clock);
+
+ ? ? if (dsim.pd->mipi_power)
+ ? ? ? ? ? ? dsim.pd->mipi_power(&dsim, (void *) dsim.r_mipi_1_1v,
+ ? ? ? ? ? ? ? ? ? ? (void *) dsim.r_mipi_1_8v, 0);
+
+ ? ? return 0;
+}
+
+int s5p_dsim_resume(struct platform_device *pdev)
+{
+ ? ? if (dsim.pd->mipi_power)
+ ? ? ? ? ? ? dsim.pd->mipi_power(&dsim, (void *) dsim.r_mipi_1_1v,
+ ? ? ? ? ? ? ? ? ? ? (void *) dsim.r_mipi_1_8v, 1);
+
+ ? ? clk_enable(dsim.clock);
+
+ ? ? if (dsim.mipi_drv->resume)
+ ? ? ? ? ? ? dsim.mipi_drv->resume(&pdev->dev);
+
+ ? ? s5p_dsim_init_dsim(&dsim);
+ ? ? s5p_dsim_init_link(&dsim);
+
+ ? ? s5p_dsim_set_hs_enable(&dsim);
+ ? ? s5p_dsim_set_data_transfer_mode(&dsim, DSIM_TRANSFER_BYCPU, 1);
+
+ ? ? /* it needs delay for stabilization */
+ ? ? mdelay(dsim.pd->delay_for_stabilization);
+
+ ? ? /* initialize lcd panel */
+ ? ? if (dsim.mipi_drv->init)
+ ? ? ? ? ? ? dsim.mipi_drv->init(&pdev->dev);
+ ? ? else
+ ? ? ? ? ? ? dev_warn(&pdev->dev, "init func is null.\n");
+
+ ? ? s5p_dsim_set_display_mode(&dsim, dsim.dsim_lcd_info, NULL);
+
+ ? ? s5p_dsim_set_data_transfer_mode(&dsim, DSIM_TRANSFER_BYLCDC, 1);
+
+ ? ? dsim.mipi_ddi_pd->resume_complete = 1;
+
+ ? ? return 0;
+}
+#else
+#define s5p_dsim_suspend NULL
+#define s5p_dsim_resume NULL
+#endif
+
+static struct platform_driver s5p_dsim_driver = {
+ ? ? .probe = s5p_dsim_probe,
+ ? ? .remove = s5p_dsim_remove,
+ ? ? .suspend = s5p_dsim_suspend,
+ ? ? .resume = s5p_dsim_resume,
+ ? ? .driver = {
+ ? ? ? ? ? ? ? ?.name = "s5p-dsim",
+ ? ? ? ? ? ? ? ?.owner = THIS_MODULE,
+ ? ? },
+};
+
+static int s5p_dsim_register(void)
+{
+ ? ? platform_driver_register(&s5p_dsim_driver);
+
+ ? ? return 0;
+}
+
+static void s5p_dsim_unregister(void)
+{
+ ? ? platform_driver_unregister(&s5p_dsim_driver);
+}
+
+module_init(s5p_dsim_register);
+module_exit(s5p_dsim_unregister);
+
+MODULE_AUTHOR("InKi Dae <[email protected]>");
+MODULE_DESCRIPTION("Samusung MIPI-DSIM driver");
+MODULE_LICENSE("GPL");

drivers/video/s5p_dsim_common.c new file +41 -0

new file mode 100644
index 0000000..77724dc
@@ -0,0 +1,753 @@
+/* linux/drivers/video/samsung/s5p_dsim_common.c
+ *
+ * Samsung MIPI-DSIM common driver.
+ *
+ * InKi Dae, <[email protected]>
+ *
+ * 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/kthread.h>
+
+#include <plat/fb.h>
+#include <plat/regs-dsim.h>
+
+#include <mach/map.h>
+#include <plat/dsim.h>
+#include <plat/mipi_ddi.h>
+
+#include "s5p_dsim_lowlevel.h"
+
+static void s5p_dsim_long_data_wr(struct dsim_global *dsim, unsigned int data0,
+ ? ? unsigned int data1)
+{
+ ? ? unsigned int data_cnt = 0, payload = 0;
+
+ ? ? /* in case that data count is more then 4 */

drivers/video/s5p_dsim_common.c line 51

Quoted 10 lines

drivers/video/s5p_dsim_common.c new file +10 -0

+ ? ? for (data_cnt = 0; data_cnt < data1; data_cnt += 4) {
+ ? ? ? ? ? ? /*
+ ? ? ? ? ? ? ?* after sending 4bytes per one time,
+ ? ? ? ? ? ? ?* send remainder data less then 4.
+ ? ? ? ? ? ? ?*/
+ ? ? ? ? ? ? if ((data1 - data_cnt) < 4) {
+ ? ? ? ? ? ? ? ? ? ? if ((data1 - data_cnt) == 3) {
+ ? ? ? ? ? ? ? ? ? ? ? ? ? ? payload = *(u8 *)(data0 + data_cnt) |
+ ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? (*(u8 *)(data0 + (data_cnt + 1))) << 8 |
+ ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? (*(u8 *)(data0 + (data_cnt + 2))) << 16;

Erm, why wheren't these types kept as 'u8 *', this amount of casting should be ringing alarm bells all over the place.

Quoted 195 lines

drivers/video/s5p_dsim_common.c new file +195 -0

+ ? ? ? ? ? ? ? ? ? ? dev_dbg(dsim->dev, "count = 3 payload = %x, %x %x %x\n",
+ ? ? ? ? ? ? ? ? ? ? ? ? ? ? payload, *(u8 *)(data0 + data_cnt),
+ ? ? ? ? ? ? ? ? ? ? ? ? ? ? *(u8 *)(data0 + (data_cnt + 1)),
+ ? ? ? ? ? ? ? ? ? ? ? ? ? ? *(u8 *)(data0 + (data_cnt + 2)));
+ ? ? ? ? ? ? ? ? ? ? } else if ((data1 - data_cnt) == 2) {
+ ? ? ? ? ? ? ? ? ? ? ? ? ? ? payload = *(u8 *)(data0 + data_cnt) |
+ ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? (*(u8 *)(data0 + (data_cnt + 1))) << 8;
+ ? ? ? ? ? ? ? ? ? ? dev_dbg(dsim->dev,
+ ? ? ? ? ? ? ? ? ? ? ? ? ? ? "count = 2 payload = %x, %x %x\n", payload,
+ ? ? ? ? ? ? ? ? ? ? ? ? ? ? *(u8 *)(data0 + data_cnt),
+ ? ? ? ? ? ? ? ? ? ? ? ? ? ? *(u8 *)(data0 + (data_cnt + 1)));
+ ? ? ? ? ? ? ? ? ? ? } else if ((data1 - data_cnt) == 1) {
+ ? ? ? ? ? ? ? ? ? ? ? ? ? ? payload = *(u8 *)(data0 + data_cnt);
+ ? ? ? ? ? ? ? ? ? ? }
+
+ ? ? ? ? ? ? ? ? ? ? s5p_dsim_wr_tx_data(dsim, payload);
+ ? ? ? ? ? ? /* send 4bytes per one time. */
+ ? ? ? ? ? ? } else {
+ ? ? ? ? ? ? ? ? ? ? payload = *(u8 *)(data0 + data_cnt) |
+ ? ? ? ? ? ? ? ? ? ? ? ? ? ? (*(u8 *)(data0 + (data_cnt + 1))) << 8 |
+ ? ? ? ? ? ? ? ? ? ? ? ? ? ? (*(u8 *)(data0 + (data_cnt + 2))) << 16 |
+ ? ? ? ? ? ? ? ? ? ? ? ? ? ? (*(u8 *)(data0 + (data_cnt + 3))) << 24;
+
+ ? ? ? ? ? ? ? ? ? ? dev_dbg(dsim->dev,
+ ? ? ? ? ? ? ? ? ? ? ? ? ? ? "count = 4 payload = %x, %x %x %x %x\n",
+ ? ? ? ? ? ? ? ? ? ? ? ? ? ? payload, *(u8 *)(data0 + data_cnt),
+ ? ? ? ? ? ? ? ? ? ? ? ? ? ? *(u8 *)(data0 + (data_cnt + 1)),
+ ? ? ? ? ? ? ? ? ? ? ? ? ? ? *(u8 *)(data0 + (data_cnt + 2)),
+ ? ? ? ? ? ? ? ? ? ? ? ? ? ? *(u8 *)(data0 + (data_cnt + 3)));
+
+ ? ? ? ? ? ? ? ? ? ? s5p_dsim_wr_tx_data(dsim, payload);
+ ? ? ? ? ? ? }
+ ? ? }
+}
+
+int s5p_dsim_wr_data(void *dsim_data, unsigned int data_id,
+ ? ? unsigned int data0, unsigned int data1)
+{
+ ? ? struct dsim_global *dsim = NULL;
+ ? ? unsigned int timeout = 5000 * 2;
+ ? ? unsigned long delay_val, udelay;
+ ? ? unsigned char check_rx_ack = 0;
+
+ ? ? dsim = (struct dsim_global *)dsim_data;
+
+ ? ? if (dsim == NULL) {
+ ? ? ? ? ? ? dev_err(dsim->dev, "dsim_data is NULL.\n");
+ ? ? ? ? ? ? return -EFAULT;
+ ? ? }
+
+
+ ? ? if (dsim->state == DSIM_STATE_ULPS) {
+ ? ? ? ? ? ? dev_err(dsim->dev, "state is ULPS.\n");
+
+ ? ? ? ? ? ? return -EINVAL;
+ ? ? }
+
+ ? ? delay_val = 1000000 / dsim->dsim_info->esc_clk;
+ ? ? udelay = 10 * delay_val;
+
+ ? ? mdelay(udelay);
+
+ ? ? /* only if transfer mode is LPDT, wait SFR becomes empty. */
+ ? ? if (dsim->state == DSIM_STATE_STOP) {
+ ? ? ? ? ? ? while (!(s5p_dsim_get_fifo_state(dsim) &
+ ? ? ? ? ? ? ? ? ? ? ? ? ? ? SFR_HEADER_EMPTY)) {
+ ? ? ? ? ? ? ? ? ? ? if ((timeout--) > 0)
+ ? ? ? ? ? ? ? ? ? ? ? ? ? ? mdelay(1);
+ ? ? ? ? ? ? ? ? ? ? else {
+ ? ? ? ? ? ? ? ? ? ? ? ? ? ? dev_err(dsim->dev,
+ ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? "SRF header fifo is not empty.\n");
+ ? ? ? ? ? ? ? ? ? ? ? ? ? ? return -EINVAL;
+ ? ? ? ? ? ? ? ? ? ? }
+ ? ? ? ? ? ? }
+ ? ? }
+
+ ? ? switch (data_id) {
+ ? ? /* short packet types of packet types for command. */
+ ? ? case GEN_SHORT_WR_NO_PARA:
+ ? ? case GEN_SHORT_WR_1_PARA:
+ ? ? case GEN_SHORT_WR_2_PARA:
+ ? ? case DCS_WR_NO_PARA:
+ ? ? case DCS_WR_1_PARA:
+ ? ? case SET_MAX_RTN_PKT_SIZE:
+ ? ? ? ? ? ? s5p_dsim_wr_tx_header(dsim, (unsigned char) data_id,
+ ? ? ? ? ? ? ? ? ? ? (unsigned char) data0, (unsigned char) data1);
+ ? ? ? ? ? ? if (check_rx_ack)
+ ? ? ? ? ? ? ? ? ? ? /* process response func should be implemented */
+ ? ? ? ? ? ? ? ? ? ? return 0;
+ ? ? ? ? ? ? else
+ ? ? ? ? ? ? ? ? ? ? return -EINVAL;
+
+ ? ? /* general command */
+ ? ? case CMD_OFF:
+ ? ? case CMD_ON:
+ ? ? case SHUT_DOWN:
+ ? ? case TURN_ON:
+ ? ? ? ? ? ? s5p_dsim_wr_tx_header(dsim, (unsigned char) data_id,
+ ? ? ? ? ? ? ? ? ? ? (unsigned char) data0, (unsigned char) data1);
+ ? ? ? ? ? ? if (check_rx_ack)
+ ? ? ? ? ? ? ? ? ? ? /* process response func should be implemented. */
+ ? ? ? ? ? ? ? ? ? ? return 0;
+ ? ? ? ? ? ? else
+ ? ? ? ? ? ? ? ? ? ? return -EINVAL;
+
+ ? ? /* packet types for video data */
+ ? ? case VSYNC_START:
+ ? ? case VSYNC_END:
+ ? ? case HSYNC_START:
+ ? ? case HSYNC_END:
+ ? ? case EOT_PKT:
+ ? ? ? ? ? ? return 0;
+
+ ? ? /* short and response packet types for command */
+ ? ? case GEN_RD_1_PARA:
+ ? ? case GEN_RD_2_PARA:
+ ? ? case GEN_RD_NO_PARA:
+ ? ? case DCS_RD_NO_PARA:
+ ? ? ? ? ? ? s5p_dsim_clear_interrupt(dsim, 0xffffffff);
+ ? ? ? ? ? ? s5p_dsim_wr_tx_header(dsim, (unsigned char) data_id,
+ ? ? ? ? ? ? ? ? ? ? (unsigned char) data0, (unsigned char) data1);
+ ? ? ? ? ? ? /* process response func should be implemented. */
+ ? ? ? ? ? ? return 0;
+
+ ? ? /* long packet type and null packet */
+ ? ? case NULL_PKT:
+ ? ? case BLANKING_PKT:
+ ? ? ? ? ? ? return 0;
+ ? ? case GEN_LONG_WR:
+ ? ? case DCS_LONG_WR:
+ ? ? {
+ ? ? ? ? ? ? unsigned int size, data_cnt = 0, payload = 0;
+
+ ? ? ? ? ? ? size = data1 * 4;
+
+ ? ? ? ? ? ? /* if data count is less then 4, then send 3bytes data. ?*/
+ ? ? ? ? ? ? if (data1 < 4) {
+ ? ? ? ? ? ? ? ? ? ? payload = *(u8 *)(data0) |
+ ? ? ? ? ? ? ? ? ? ? ? ? ? ? *(u8 *)(data0 + 1) << 8 |
+ ? ? ? ? ? ? ? ? ? ? ? ? ? ? *(u8 *)(data0 + 2) << 16;
+
+ ? ? ? ? ? ? ? ? ? ? s5p_dsim_wr_tx_data(dsim, payload);
+
+ ? ? ? ? ? ? ? ? ? ? dev_dbg(dsim->dev, "count = %d payload = %x,%x %x %x\n",
+ ? ? ? ? ? ? ? ? ? ? ? ? ? ? data1, payload,
+ ? ? ? ? ? ? ? ? ? ? ? ? ? ? *(u8 *)(data0 + data_cnt),
+ ? ? ? ? ? ? ? ? ? ? ? ? ? ? *(u8 *)(data0 + (data_cnt + 1)),
+ ? ? ? ? ? ? ? ? ? ? ? ? ? ? *(u8 *)(data0 + (data_cnt + 2)));
+ ? ? ? ? ? ? /* in case that data count is more then 4 */
+ ? ? ? ? ? ? } else
+ ? ? ? ? ? ? ? ? ? ? s5p_dsim_long_data_wr(dsim, data0, data1);
+
+ ? ? ? ? ? ? /* put data into header fifo */
+ ? ? ? ? ? ? s5p_dsim_wr_tx_header(dsim, (unsigned char) data_id,
+ ? ? ? ? ? ? ? ? ? ? (unsigned char) (((unsigned short) data1) & 0xff),
+ ? ? ? ? ? ? ? ? ? ? (unsigned char) ((((unsigned short) data1) & 0xff00) >>
+ ? ? ? ? ? ? ? ? ? ? ? ? ? ? 8));
+
+ ? ? }
+ ? ? if (check_rx_ack)
+ ? ? ? ? ? ? /* process response func should be implemented. */
+ ? ? ? ? ? ? return 0;
+ ? ? else
+ ? ? ? ? ? ? return -EINVAL;
+
+ ? ? /* packet typo for video data */
+ ? ? case RGB565_PACKED:
+ ? ? case RGB666_PACKED:
+ ? ? case RGB666_LOOSLY:
+ ? ? case RGB888_PACKED:
+ ? ? ? ? ? ? if (check_rx_ack)
+ ? ? ? ? ? ? ? ? ? ? /* process response func should be implemented. */
+ ? ? ? ? ? ? ? ? ? ? return 0;
+ ? ? ? ? ? ? else
+ ? ? ? ? ? ? ? ? ? ? return -EINVAL;
+ ? ? default:
+ ? ? ? ? ? ? dev_warn(dsim->dev,
+ ? ? ? ? ? ? ? ? ? ? "data id %x is not supported current DSI spec.\n",
+ ? ? ? ? ? ? ? ? ? ? data_id);
+
+ ? ? ? ? ? ? return -EINVAL;
+ ? ? }
+
+ ? ? return 0;
+}
+
+int s5p_dsim_init_header_fifo(struct dsim_global *dsim)
+{
+ ? ? unsigned int cnt;
+
+ ? ? if (dsim == NULL) {
+ ? ? ? ? ? ? printk(KERN_ERR "dsim_global pointer is NULL.\n");
+ ? ? ? ? ? ? return -EFAULT;
+ ? ? }
+