backport git changes on DaVinci driver

From: Mauro Carvalho Chehab <mchehab@redhat.com>

Due to several conflicts with OMAP arch files, the DaVinci patches were
applied directly to the -git tree. So, we need to backport those changes
to -hg.

Priority: normal

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

5 files changed, 126 insertions, 64 deletions

diff --git a/linux/drivers/media/video/Kconfig b/linux/drivers/media/video/Kconfig
index 14a1b6160..298eb937e 100644
--- a/linux/drivers/media/video/Kconfig
+++ b/linux/drivers/media/video/Kconfig
@@ -501,10 +501,21 @@ config DISPLAY_DAVINCI_DM646X_EVM
 	select VIDEO_ADV7343
 	select VIDEO_THS7303
 	help
-	  Support for DaVinci based display device.
+	  Support for DM6467 based display device.
 
 	  To compile this driver as a module, choose M here: the
-	  module will be called davincihd_display.
+	  module will be called vpif_display.
+
+config CAPTURE_DAVINCI_DM646X_EVM
+	tristate "DM646x EVM Video Capture"
+	depends on VIDEO_DEV && MACH_DAVINCI_DM6467_EVM
+	select VIDEOBUF_DMA_CONTIG
+	select VIDEO_DAVINCI_VPIF
+	help
+	  Support for DM6467 based capture device.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called vpif_capture.
 
 config VIDEO_DAVINCI_VPIF
 	tristate "DaVinci VPIF Driver"
diff --git a/linux/drivers/media/video/davinci/Makefile b/linux/drivers/media/video/davinci/Makefile
index f44cad2f5..1a8b8f3f1 100644
--- a/linux/drivers/media/video/davinci/Makefile
+++ b/linux/drivers/media/video/davinci/Makefile
@@ -7,6 +7,8 @@ obj-$(CONFIG_VIDEO_DAVINCI_VPIF) += vpif.o
 
 #DM646x EVM Display driver
 obj-$(CONFIG_DISPLAY_DAVINCI_DM646X_EVM) += vpif_display.o
+#DM646x EVM Capture driver
+obj-$(CONFIG_CAPTURE_DAVINCI_DM646X_EVM) += vpif_capture.o
 
 # Capture: DM6446 and DM355
 obj-$(CONFIG_VIDEO_VPSS_SYSTEM) += vpss.o
diff --git a/linux/drivers/media/video/davinci/vpif.c b/linux/drivers/media/video/davinci/vpif.c
index aa771268a..3b8eac31e 100644
--- a/linux/drivers/media/video/davinci/vpif.c
+++ b/linux/drivers/media/video/davinci/vpif.c
@@ -19,7 +19,11 @@
 
 #include <linux/init.h>
 #include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/spinlock.h>
 #include <linux/kernel.h>
+#include <linux/io.h>
+#include <mach/hardware.h>
 
 #include "vpif.h"
 
@@ -31,6 +35,12 @@ MODULE_LICENSE("GPL");
 #define VPIF_CH2_MAX_MODES	(15)
 #define VPIF_CH3_MAX_MODES	(02)
 
+static resource_size_t	res_len;
+static struct resource	*res;
+spinlock_t vpif_lock;
+
+void __iomem *vpif_base;
+
 static inline void vpif_wr_bit(u32 reg, u32 bit, u32 val)
 {
 	if (val)
@@ -151,17 +161,17 @@ static void config_vpif_params(struct vpif_params *vpifparams,
 		else if (config->capture_format) {
 			/* Set the polarity of various pins */
 			vpif_wr_bit(reg, VPIF_CH_FID_POLARITY_BIT,
-					vpifparams->params.raw_params.fid_pol);
+					vpifparams->iface.fid_pol);
 			vpif_wr_bit(reg, VPIF_CH_V_VALID_POLARITY_BIT,
-					vpifparams->params.raw_params.vd_pol);
+					vpifparams->iface.vd_pol);
 			vpif_wr_bit(reg, VPIF_CH_H_VALID_POLARITY_BIT,
-					vpifparams->params.raw_params.hd_pol);
+					vpifparams->iface.hd_pol);
 
 			value = regr(reg);
 			/* Set data width */
 			value &= ((~(unsigned int)(0x3)) <<
 					VPIF_CH_DATA_WIDTH_BIT);
-			value |= ((vpifparams->params.raw_params.data_sz) <<
+			value |= ((vpifparams->params.data_sz) <<
 						     VPIF_CH_DATA_WIDTH_BIT);
 			regw(value, reg);
 		}
@@ -227,8 +237,60 @@ int vpif_channel_getfid(u8 channel_id)
 }
 EXPORT_SYMBOL(vpif_channel_getfid);
 
-void vpif_base_addr_init(void __iomem *base)
+static int __init vpif_probe(struct platform_device *pdev)
+{
+	int status = 0;
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (!res)
+		return -ENOENT;
+
+	res_len = res->end - res->start + 1;
+
+	res = request_mem_region(res->start, res_len, res->name);
+	if (!res)
+		return -EBUSY;
+
+	vpif_base = ioremap(res->start, res_len);
+	if (!vpif_base) {
+		status = -EBUSY;
+		goto fail;
+	}
+
+	spin_lock_init(&vpif_lock);
+	dev_info(&pdev->dev, "vpif probe success\n");
+	return 0;
+
+fail:
+	release_mem_region(res->start, res_len);
+	return status;
+}
+
+static int vpif_remove(struct platform_device *pdev)
 {
-	vpif_base = base;
+	iounmap(vpif_base);
+	release_mem_region(res->start, res_len);
+	return 0;
 }
-EXPORT_SYMBOL(vpif_base_addr_init);
+
+static struct platform_driver vpif_driver = {
+	.driver = {
+		.name	= "vpif",
+		.owner = THIS_MODULE,
+	},
+	.remove = __devexit_p(vpif_remove),
+	.probe = vpif_probe,
+};
+
+static void vpif_exit(void)
+{
+	platform_driver_unregister(&vpif_driver);
+}
+
+static int __init vpif_init(void)
+{
+	return platform_driver_register(&vpif_driver);
+}
+subsys_initcall(vpif_init);
+module_exit(vpif_exit);
+
diff --git a/linux/drivers/media/video/davinci/vpif.h b/linux/drivers/media/video/davinci/vpif.h
index fca26dcb5..188841b47 100644
--- a/linux/drivers/media/video/davinci/vpif.h
+++ b/linux/drivers/media/video/davinci/vpif.h
@@ -19,6 +19,7 @@
 #include <linux/io.h>
 #include <linux/videodev2.h>
 #include <mach/hardware.h>
+#include <mach/dm646x.h>
 
 /* Maximum channel allowed */
 #define VPIF_NUM_CHANNELS		(4)
@@ -26,7 +27,9 @@
 #define VPIF_DISPLAY_NUM_CHANNELS	(2)
 
 /* Macros to read/write registers */
-static void __iomem *vpif_base;
+extern void __iomem *vpif_base;
+extern spinlock_t vpif_lock;
+
 #define regr(reg)               readl((reg) + vpif_base)
 #define regw(value, reg)        writel(value, (reg + vpif_base))
 
@@ -280,6 +283,10 @@ static inline void enable_channel1(int enable)
 /* inline function to enable interrupt for channel0 */
 static inline void channel0_intr_enable(int enable)
 {
+	unsigned long flags;
+
+	spin_lock_irqsave(&vpif_lock, flags);
+
 	if (enable) {
 		regw((regr(VPIF_INTEN) | 0x10), VPIF_INTEN);
 		regw((regr(VPIF_INTEN_SET) | 0x10), VPIF_INTEN_SET);
@@ -292,11 +299,16 @@ static inline void channel0_intr_enable(int enable)
 		regw((regr(VPIF_INTEN_SET) | VPIF_INTEN_FRAME_CH0),
 							VPIF_INTEN_SET);
 	}
+	spin_unlock_irqrestore(&vpif_lock, flags);
 }
 
 /* inline function to enable interrupt for channel1 */
 static inline void channel1_intr_enable(int enable)
 {
+	unsigned long flags;
+
+	spin_lock_irqsave(&vpif_lock, flags);
+
 	if (enable) {
 		regw((regr(VPIF_INTEN) | 0x10), VPIF_INTEN);
 		regw((regr(VPIF_INTEN_SET) | 0x10), VPIF_INTEN_SET);
@@ -309,6 +321,7 @@ static inline void channel1_intr_enable(int enable)
 		regw((regr(VPIF_INTEN_SET) | VPIF_INTEN_FRAME_CH1),
 							VPIF_INTEN_SET);
 	}
+	spin_unlock_irqrestore(&vpif_lock, flags);
 }
 
 /* inline function to set buffer addresses in case of Y/C non mux mode */
@@ -431,6 +444,10 @@ static inline void enable_channel3(int enable)
 /* inline function to enable interrupt for channel2 */
 static inline void channel2_intr_enable(int enable)
 {
+	unsigned long flags;
+
+	spin_lock_irqsave(&vpif_lock, flags);
+
 	if (enable) {
 		regw((regr(VPIF_INTEN) | 0x10), VPIF_INTEN);
 		regw((regr(VPIF_INTEN_SET) | 0x10), VPIF_INTEN_SET);
@@ -442,11 +459,16 @@ static inline void channel2_intr_enable(int enable)
 		regw((regr(VPIF_INTEN_SET) | VPIF_INTEN_FRAME_CH2),
 							VPIF_INTEN_SET);
 	}
+	spin_unlock_irqrestore(&vpif_lock, flags);
 }
 
 /* inline function to enable interrupt for channel3 */
 static inline void channel3_intr_enable(int enable)
 {
+	unsigned long flags;
+
+	spin_lock_irqsave(&vpif_lock, flags);
+
 	if (enable) {
 		regw((regr(VPIF_INTEN) | 0x10), VPIF_INTEN);
 		regw((regr(VPIF_INTEN_SET) | 0x10), VPIF_INTEN_SET);
@@ -459,6 +481,7 @@ static inline void channel3_intr_enable(int enable)
 		regw((regr(VPIF_INTEN_SET) | VPIF_INTEN_FRAME_CH3),
 							VPIF_INTEN_SET);
 	}
+	spin_unlock_irqrestore(&vpif_lock, flags);
 }
 
 /* inline function to enable raw vbi data for channel2 */
@@ -571,7 +594,7 @@ struct vpif_channel_config_params {
 	v4l2_std_id stdid;
 };
 
-struct vpif_interface;
+struct vpif_video_params;
 struct vpif_params;
 struct vpif_vbi_params;
 
@@ -579,13 +602,6 @@ int vpif_set_video_params(struct vpif_params *vpifparams, u8 channel_id);
 void vpif_set_vbi_display_params(struct vpif_vbi_params *vbiparams,
 							u8 channel_id);
 int vpif_channel_getfid(u8 channel_id);
-void vpif_base_addr_init(void __iomem *base);
-
-/* Enumerated data types */
-enum vpif_capture_pinpol {
-	VPIF_CAPTURE_PINPOL_SAME	= 0,
-	VPIF_CAPTURE_PINPOL_INVERT	= 1
-};
 
 enum data_size {
 	_8BITS = 0,
@@ -593,13 +609,6 @@ enum data_size {
 	_12BITS,
 };
 
-struct vpif_capture_params_raw {
-	enum data_size data_sz;
-	enum vpif_capture_pinpol fid_pol;
-	enum vpif_capture_pinpol vd_pol;
-	enum vpif_capture_pinpol hd_pol;
-};
-
 /* Structure for vpif parameters for raw vbi data */
 struct vpif_vbi_params {
 	__u32 hstart0;  /* Horizontal start of raw vbi data for first field */
@@ -613,18 +622,19 @@ struct vpif_vbi_params {
 };
 
 /* structure for vpif parameters */
-struct vpif_interface {
+struct vpif_video_params {
 	__u8 storage_mode;	/* Indicates field or frame mode */
 	unsigned long hpitch;
 	v4l2_std_id stdid;
 };
 
 struct vpif_params {
-	struct vpif_interface video_params;
+	struct vpif_interface iface;
+	struct vpif_video_params video_params;
 	struct vpif_channel_config_params std_info;
 	union param {
 		struct vpif_vbi_params	vbi_params;
-		struct vpif_capture_params_raw	raw_params;
+		enum data_size data_sz;
 	} params;
 };
 
diff --git a/linux/drivers/media/video/davinci/vpif_display.c b/linux/drivers/media/video/davinci/vpif_display.c
index a125a452d..c015da813 100644
--- a/linux/drivers/media/video/davinci/vpif_display.c
+++ b/linux/drivers/media/video/davinci/vpif_display.c
@@ -683,7 +683,7 @@ static int vpif_release(struct file *filep)
 static int vpif_querycap(struct file *file, void  *priv,
 				struct v4l2_capability *cap)
 {
-	struct vpif_config *config = vpif_dev->platform_data;
+	struct vpif_display_config *config = vpif_dev->platform_data;
 
 	cap->version = VPIF_DISPLAY_VERSION_CODE;
 	cap->capabilities = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING;
@@ -1053,7 +1053,7 @@ static int vpif_streamon(struct file *file, void *priv,
 	struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
 	struct channel_obj *oth_ch = vpif_obj.dev[!ch->channel_id];
 	struct vpif_params *vpif = &ch->vpifparams;
-	struct vpif_config *vpif_config_data =
+	struct vpif_display_config *vpif_config_data =
 					vpif_dev->platform_data;
 	unsigned long addr = 0;
 	int ret = 0;
@@ -1239,7 +1239,7 @@ static int vpif_enum_output(struct file *file, void *fh,
 				struct v4l2_output *output)
 {
 
-	struct vpif_config *config = vpif_dev->platform_data;
+	struct vpif_display_config *config = vpif_dev->platform_data;
 
 	if (output->index >= config->output_count) {
 		vpif_dbg(1, debug, "Invalid output index\n");
@@ -1422,7 +1422,8 @@ vpif_init_free_channel_objects:
  */
 static __init int vpif_probe(struct platform_device *pdev)
 {
-	const struct vpif_subdev_info *subdevdata;
+	struct vpif_subdev_info *subdevdata;
+	struct vpif_display_config *config;
 	int i, j = 0, k, q, m, err = 0;
 	struct i2c_adapter *i2c_adap;
 	struct vpif_config *config;
@@ -1433,30 +1434,14 @@ static __init int vpif_probe(struct platform_device *pdev)
 	int subdev_count;
 
 	vpif_dev = &pdev->dev;
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!res) {
-		v4l2_err(vpif_dev->driver,
-				"Error getting platform resource\n");
-		return -ENOENT;
-	}
 
-	if (!request_mem_region(res->start, res->end - res->start + 1,
-						vpif_dev->driver->name)) {
-		v4l2_err(vpif_dev->driver, "VPIF: failed request_mem_region\n");
-		return -ENXIO;
-	}
+	err = initialize_vpif();
 
-	vpif_base = ioremap_nocache(res->start, res->end - res->start + 1);
-	if (!vpif_base) {
-		v4l2_err(vpif_dev->driver, "Unable to ioremap VPIF reg\n");
-		err = -ENXIO;
-		goto resource_exit;
+	if (err) {
+		v4l2_err(vpif_dev->driver, "Error initializing vpif\n");
+		return err;
 	}
 
-	vpif_base_addr_init(vpif_base);
-
-	initialize_vpif();
-
 	err = v4l2_device_register(vpif_dev, &vpif_obj.v4l2_dev);
 	if (err) {
 		v4l2_err(vpif_dev->driver, "Error registering v4l2 device\n");
@@ -1489,7 +1474,7 @@ static __init int vpif_probe(struct platform_device *pdev)
 				video_device_release(ch->video_dev);
 			}
 			err = -ENOMEM;
-			goto video_dev_alloc_exit;
+			goto vpif_int_err;
 		}
 
 		/* Initialize field of video device */
@@ -1566,10 +1551,10 @@ static __init int vpif_probe(struct platform_device *pdev)
 	}
 
 	for (i = 0; i < subdev_count; i++) {
-		vpif_obj.sd[i] = v4l2_i2c_new_subdev(&vpif_obj.v4l2_dev,
+		vpif_obj.sd[i] = v4l2_i2c_new_subdev_board(&vpif_obj.v4l2_dev,
 						i2c_adap, subdevdata[i].name,
-						subdevdata[i].name,
-						0, I2C_ADDRS(subdevdata[i].addr));
+						&subdevdata[i].board_info,
+						NULL);
 		if (!vpif_obj.sd[i]) {
 			vpif_err("Error registering v4l2 subdevice\n");
 			goto probe_subdev_out;
@@ -1599,11 +1584,6 @@ vpif_int_err:
 		res = platform_get_resource(pdev, IORESOURCE_IRQ, k-1);
 		m = res->end;
 	}
-video_dev_alloc_exit:
-	iounmap(vpif_base);
-resource_exit:
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	release_mem_region(res->start, res->end - res->start + 1);
 
 	return err;
 }
@@ -1666,9 +1646,6 @@ static void vpif_cleanup(void)
 		i++;
 	}
 
-	iounmap(vpif_base);
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	release_mem_region(res->start, res->end - res->start + 1);
 	platform_driver_unregister(&vpif_driver);
 	kfree(vpif_obj.sd);
 	for (i = 0; i < VPIF_DISPLAY_MAX_DEVICES; i++)