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Subject[PATCH v2 01/13] gpu: ipu-v3: Add Video Deinterlacer unit
Date
Adds the Video Deinterlacer (VDIC) unit.

Signed-off-by: Steve Longerbeam <steve_longerbeam@mentor.com>

---

v2:
- removed include of module.h
- corrected V4L2 field type checks
- cleaned up use_count decrement in ipu_vdi_disable()
---
drivers/gpu/ipu-v3/Makefile | 2 +-
drivers/gpu/ipu-v3/ipu-common.c | 11 ++
drivers/gpu/ipu-v3/ipu-prv.h | 6 +
drivers/gpu/ipu-v3/ipu-vdi.c | 262 ++++++++++++++++++++++++++++++++++++++++
include/video/imx-ipu-v3.h | 27 +++++
5 files changed, 307 insertions(+), 1 deletion(-)
create mode 100644 drivers/gpu/ipu-v3/ipu-vdi.c

diff --git a/drivers/gpu/ipu-v3/Makefile b/drivers/gpu/ipu-v3/Makefile
index 107ec23..aeba9dc 100644
--- a/drivers/gpu/ipu-v3/Makefile
+++ b/drivers/gpu/ipu-v3/Makefile
@@ -1,4 +1,4 @@
obj-$(CONFIG_IMX_IPUV3_CORE) += imx-ipu-v3.o

imx-ipu-v3-objs := ipu-common.o ipu-cpmem.o ipu-csi.o ipu-dc.o ipu-di.o \
- ipu-dp.o ipu-dmfc.o ipu-ic.o ipu-smfc.o
+ ipu-dp.o ipu-dmfc.o ipu-ic.o ipu-smfc.o ipu-vdi.o
diff --git a/drivers/gpu/ipu-v3/ipu-common.c b/drivers/gpu/ipu-v3/ipu-common.c
index 99dcacf..30dc115 100644
--- a/drivers/gpu/ipu-v3/ipu-common.c
+++ b/drivers/gpu/ipu-v3/ipu-common.c
@@ -833,6 +833,14 @@ static int ipu_submodules_init(struct ipu_soc *ipu,
goto err_ic;
}

+ ret = ipu_vdi_init(ipu, dev, ipu_base + devtype->vdi_ofs,
+ IPU_CONF_VDI_EN | IPU_CONF_ISP_EN |
+ IPU_CONF_IC_INPUT);
+ if (ret) {
+ unit = "vdi";
+ goto err_vdi;
+ }
+
ret = ipu_di_init(ipu, dev, 0, ipu_base + devtype->disp0_ofs,
IPU_CONF_DI0_EN, ipu_clk);
if (ret) {
@@ -887,6 +895,8 @@ err_dc:
err_di_1:
ipu_di_exit(ipu, 0);
err_di_0:
+ ipu_vdi_exit(ipu);
+err_vdi:
ipu_ic_exit(ipu);
err_ic:
ipu_csi_exit(ipu, 1);
@@ -971,6 +981,7 @@ static void ipu_submodules_exit(struct ipu_soc *ipu)
ipu_dc_exit(ipu);
ipu_di_exit(ipu, 1);
ipu_di_exit(ipu, 0);
+ ipu_vdi_exit(ipu);
ipu_ic_exit(ipu);
ipu_csi_exit(ipu, 1);
ipu_csi_exit(ipu, 0);
diff --git a/drivers/gpu/ipu-v3/ipu-prv.h b/drivers/gpu/ipu-v3/ipu-prv.h
index bfb1e8a..845f64c 100644
--- a/drivers/gpu/ipu-v3/ipu-prv.h
+++ b/drivers/gpu/ipu-v3/ipu-prv.h
@@ -138,6 +138,7 @@ struct ipu_dc_priv;
struct ipu_dmfc_priv;
struct ipu_di;
struct ipu_ic_priv;
+struct ipu_vdi;
struct ipu_smfc_priv;

struct ipu_devtype;
@@ -169,6 +170,7 @@ struct ipu_soc {
struct ipu_di *di_priv[2];
struct ipu_csi *csi_priv[2];
struct ipu_ic_priv *ic_priv;
+ struct ipu_vdi *vdi_priv;
struct ipu_smfc_priv *smfc_priv;
};

@@ -199,6 +201,10 @@ int ipu_ic_init(struct ipu_soc *ipu, struct device *dev,
unsigned long base, unsigned long tpmem_base);
void ipu_ic_exit(struct ipu_soc *ipu);

+int ipu_vdi_init(struct ipu_soc *ipu, struct device *dev,
+ unsigned long base, u32 module);
+void ipu_vdi_exit(struct ipu_soc *ipu);
+
int ipu_di_init(struct ipu_soc *ipu, struct device *dev, int id,
unsigned long base, u32 module, struct clk *ipu_clk);
void ipu_di_exit(struct ipu_soc *ipu, int id);
diff --git a/drivers/gpu/ipu-v3/ipu-vdi.c b/drivers/gpu/ipu-v3/ipu-vdi.c
new file mode 100644
index 0000000..fe4d90a
--- /dev/null
+++ b/drivers/gpu/ipu-v3/ipu-vdi.c
@@ -0,0 +1,262 @@
+/*
+ * Copyright (C) 2012 Mentor Graphics Inc.
+ * Copyright (C) 2005-2009 Freescale Semiconductor, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * for more details.
+ */
+#include <linux/export.h>
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/delay.h>
+#include <linux/io.h>
+#include <linux/err.h>
+#include <linux/platform_device.h>
+#include <linux/clk.h>
+#include <linux/clk-provider.h>
+#include <linux/clkdev.h>
+#include <uapi/linux/v4l2-mediabus.h>
+
+#include "ipu-prv.h"
+
+struct ipu_vdi {
+ void __iomem *base;
+ u32 module;
+ spinlock_t lock;
+ int use_count;
+ struct ipu_soc *ipu;
+};
+
+
+/* VDI Register Offsets */
+#define VDI_FSIZE 0x0000
+#define VDI_C 0x0004
+
+/* VDI Register Fields */
+#define VDI_C_CH_420 (0 << 1)
+#define VDI_C_CH_422 (1 << 1)
+#define VDI_C_MOT_SEL_MASK (0x3 << 2)
+#define VDI_C_MOT_SEL_FULL (2 << 2)
+#define VDI_C_MOT_SEL_LOW (1 << 2)
+#define VDI_C_MOT_SEL_MED (0 << 2)
+#define VDI_C_BURST_SIZE1_4 (3 << 4)
+#define VDI_C_BURST_SIZE2_4 (3 << 8)
+#define VDI_C_BURST_SIZE3_4 (3 << 12)
+#define VDI_C_BURST_SIZE_MASK 0xF
+#define VDI_C_BURST_SIZE1_OFFSET 4
+#define VDI_C_BURST_SIZE2_OFFSET 8
+#define VDI_C_BURST_SIZE3_OFFSET 12
+#define VDI_C_VWM1_SET_1 (0 << 16)
+#define VDI_C_VWM1_SET_2 (1 << 16)
+#define VDI_C_VWM1_CLR_2 (1 << 19)
+#define VDI_C_VWM3_SET_1 (0 << 22)
+#define VDI_C_VWM3_SET_2 (1 << 22)
+#define VDI_C_VWM3_CLR_2 (1 << 25)
+#define VDI_C_TOP_FIELD_MAN_1 (1 << 30)
+#define VDI_C_TOP_FIELD_AUTO_1 (1 << 31)
+
+static inline u32 ipu_vdi_read(struct ipu_vdi *vdi, unsigned int offset)
+{
+ return readl(vdi->base + offset);
+}
+
+static inline void ipu_vdi_write(struct ipu_vdi *vdi, u32 value,
+ unsigned int offset)
+{
+ writel(value, vdi->base + offset);
+}
+
+static void __ipu_vdi_set_top_field_man(struct ipu_vdi *vdi, bool top_field_0)
+{
+ u32 reg;
+
+ reg = ipu_vdi_read(vdi, VDI_C);
+ if (top_field_0)
+ reg &= ~VDI_C_TOP_FIELD_MAN_1;
+ else
+ reg |= VDI_C_TOP_FIELD_MAN_1;
+ ipu_vdi_write(vdi, reg, VDI_C);
+}
+
+static void __ipu_vdi_set_motion(struct ipu_vdi *vdi,
+ enum ipu_motion_sel motion_sel)
+{
+ u32 reg;
+
+ reg = ipu_vdi_read(vdi, VDI_C);
+
+ reg &= ~VDI_C_MOT_SEL_MASK;
+
+ switch (motion_sel) {
+ case MED_MOTION:
+ reg |= VDI_C_MOT_SEL_MED;
+ break;
+ case HIGH_MOTION:
+ reg |= VDI_C_MOT_SEL_FULL;
+ break;
+ default:
+ reg |= VDI_C_MOT_SEL_LOW;
+ break;
+ }
+
+ ipu_vdi_write(vdi, reg, VDI_C);
+}
+
+void ipu_vdi_setup(struct ipu_vdi *vdi, u32 code, int xres, int yres,
+ u32 field, enum ipu_motion_sel motion_sel)
+{
+ unsigned long flags;
+ u32 pixel_fmt, reg;
+
+ spin_lock_irqsave(&vdi->lock, flags);
+
+ reg = ((yres - 1) << 16) | (xres - 1);
+ ipu_vdi_write(vdi, reg, VDI_FSIZE);
+
+ /*
+ * Full motion, only vertical filter is used.
+ * Burst size is 4 accesses
+ */
+ if (code == MEDIA_BUS_FMT_UYVY8_2X8 ||
+ code == MEDIA_BUS_FMT_UYVY8_1X16 ||
+ code == MEDIA_BUS_FMT_YUYV8_2X8 ||
+ code == MEDIA_BUS_FMT_YUYV8_1X16)
+ pixel_fmt = VDI_C_CH_422;
+ else
+ pixel_fmt = VDI_C_CH_420;
+
+ reg = ipu_vdi_read(vdi, VDI_C);
+ reg |= pixel_fmt;
+ reg |= VDI_C_BURST_SIZE2_4;
+ reg |= VDI_C_BURST_SIZE1_4 | VDI_C_VWM1_CLR_2;
+ reg |= VDI_C_BURST_SIZE3_4 | VDI_C_VWM3_CLR_2;
+ ipu_vdi_write(vdi, reg, VDI_C);
+
+ if (field == V4L2_FIELD_SEQ_TB)
+ __ipu_vdi_set_top_field_man(vdi, false);
+ else if (field == V4L2_FIELD_SEQ_BT)
+ __ipu_vdi_set_top_field_man(vdi, true);
+
+ __ipu_vdi_set_motion(vdi, motion_sel);
+
+ spin_unlock_irqrestore(&vdi->lock, flags);
+}
+EXPORT_SYMBOL_GPL(ipu_vdi_setup);
+
+void ipu_vdi_unsetup(struct ipu_vdi *vdi)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&vdi->lock, flags);
+ ipu_vdi_write(vdi, 0, VDI_FSIZE);
+ ipu_vdi_write(vdi, 0, VDI_C);
+ spin_unlock_irqrestore(&vdi->lock, flags);
+}
+EXPORT_SYMBOL_GPL(ipu_vdi_unsetup);
+
+void ipu_vdi_toggle_top_field_man(struct ipu_vdi *vdi)
+{
+ unsigned long flags;
+ u32 reg;
+ u32 mask_reg;
+
+ spin_lock_irqsave(&vdi->lock, flags);
+
+ reg = ipu_vdi_read(vdi, VDI_C);
+ mask_reg = reg & VDI_C_TOP_FIELD_MAN_1;
+ if (mask_reg == VDI_C_TOP_FIELD_MAN_1)
+ reg &= ~VDI_C_TOP_FIELD_MAN_1;
+ else
+ reg |= VDI_C_TOP_FIELD_MAN_1;
+
+ ipu_vdi_write(vdi, reg, VDI_C);
+
+ spin_unlock_irqrestore(&vdi->lock, flags);
+}
+EXPORT_SYMBOL_GPL(ipu_vdi_toggle_top_field_man);
+
+int ipu_vdi_set_src(struct ipu_vdi *vdi, bool csi)
+{
+ ipu_set_vdi_src_mux(vdi->ipu, csi);
+ return 0;
+}
+EXPORT_SYMBOL_GPL(ipu_vdi_set_src);
+
+int ipu_vdi_enable(struct ipu_vdi *vdi)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&vdi->lock, flags);
+
+ if (!vdi->use_count)
+ ipu_module_enable(vdi->ipu, vdi->module);
+
+ vdi->use_count++;
+
+ spin_unlock_irqrestore(&vdi->lock, flags);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(ipu_vdi_enable);
+
+int ipu_vdi_disable(struct ipu_vdi *vdi)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&vdi->lock, flags);
+
+ if (vdi->use_count) {
+ if (!--vdi->use_count)
+ ipu_module_disable(vdi->ipu, vdi->module);
+ }
+
+ spin_unlock_irqrestore(&vdi->lock, flags);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(ipu_vdi_disable);
+
+struct ipu_vdi *ipu_vdi_get(struct ipu_soc *ipu)
+{
+ return ipu->vdi_priv;
+}
+EXPORT_SYMBOL_GPL(ipu_vdi_get);
+
+void ipu_vdi_put(struct ipu_vdi *vdi)
+{
+}
+EXPORT_SYMBOL_GPL(ipu_vdi_put);
+
+int ipu_vdi_init(struct ipu_soc *ipu, struct device *dev,
+ unsigned long base, u32 module)
+{
+ struct ipu_vdi *vdi;
+
+ vdi = devm_kzalloc(dev, sizeof(*vdi), GFP_KERNEL);
+ if (!vdi)
+ return -ENOMEM;
+
+ ipu->vdi_priv = vdi;
+
+ spin_lock_init(&vdi->lock);
+ vdi->module = module;
+ vdi->base = devm_ioremap(dev, base, PAGE_SIZE);
+ if (!vdi->base)
+ return -ENOMEM;
+
+ dev_dbg(dev, "VDI base: 0x%08lx remapped to %p\n", base, vdi->base);
+ vdi->ipu = ipu;
+
+ return 0;
+}
+
+void ipu_vdi_exit(struct ipu_soc *ipu)
+{
+}
diff --git a/include/video/imx-ipu-v3.h b/include/video/imx-ipu-v3.h
index 7adeaae..a7a28db 100644
--- a/include/video/imx-ipu-v3.h
+++ b/include/video/imx-ipu-v3.h
@@ -80,6 +80,16 @@ enum ipu_color_space {
IPUV3_COLORSPACE_UNKNOWN,
};

+/*
+ * Enumeration of VDI MOTION select
+ */
+enum ipu_motion_sel {
+ MOTION_NONE = 0,
+ LOW_MOTION,
+ MED_MOTION,
+ HIGH_MOTION,
+};
+
struct ipuv3_channel;

enum ipu_channel_irq {
@@ -317,6 +327,23 @@ void ipu_ic_put(struct ipu_ic *ic);
void ipu_ic_dump(struct ipu_ic *ic);

/*
+ * IPU Video De-Interlacer (vdi) functions
+ */
+struct ipu_vdi;
+void ipu_vdi_set_top_field_man(struct ipu_vdi *vdi, bool top_field_0);
+void ipu_vdi_set_motion(struct ipu_vdi *vdi, enum ipu_motion_sel motion_sel);
+void ipu_vdi_setup(struct ipu_vdi *vdi,
+ u32 code, int xres, int yres, u32 field,
+ enum ipu_motion_sel motion_sel);
+void ipu_vdi_unsetup(struct ipu_vdi *vdi);
+void ipu_vdi_toggle_top_field_man(struct ipu_vdi *vdi);
+int ipu_vdi_set_src(struct ipu_vdi *vdi, bool csi);
+int ipu_vdi_enable(struct ipu_vdi *vdi);
+int ipu_vdi_disable(struct ipu_vdi *vdi);
+struct ipu_vdi *ipu_vdi_get(struct ipu_soc *ipu);
+void ipu_vdi_put(struct ipu_vdi *vdi);
+
+/*
* IPU Sensor Multiple FIFO Controller (SMFC) functions
*/
struct ipu_smfc *ipu_smfc_get(struct ipu_soc *ipu, unsigned int chno);
--
1.9.1
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