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authorJernej Skrabec <jernej.skrabec@siol.net>2020-01-25 00:20:12 +0100
committerMauro Carvalho Chehab <mchehab+huawei@kernel.org>2020-03-02 15:16:40 +0100
commitd77182ada3d40854735eb9321ce30de60c2abdbb (patch)
tree30a9593e59677916c645de1b362a9a89374ce66f
parent02fd2782fcfd6e69c6fd8fe1cd376208746f4f3f (diff)
media: sun8i: Add Allwinner A83T Rotate driver
Allwinner A83T contains rotation core which can rotate and flip images. Add a driver for it. Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net> [hverkuil-cisco@xs4all.nl: MAINTAINERS paths were out of date, fix that] [hverkuil-cisco@xs4all.nl: VFL_TYPE_GRABBER -> _VIDEO] [hverkuil-cisco@xs4all.nl: Fix module build] Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
-rw-r--r--MAINTAINERS8
-rw-r--r--drivers/media/platform/Kconfig12
-rw-r--r--drivers/media/platform/sunxi/Makefile1
-rw-r--r--drivers/media/platform/sunxi/sun8i-rotate/Makefile5
-rw-r--r--drivers/media/platform/sunxi/sun8i-rotate/sun8i-formats.h25
-rw-r--r--drivers/media/platform/sunxi/sun8i-rotate/sun8i-rotate.h135
-rw-r--r--drivers/media/platform/sunxi/sun8i-rotate/sun8i_formats.c273
-rw-r--r--drivers/media/platform/sunxi/sun8i-rotate/sun8i_rotate.c924
8 files changed, 1383 insertions, 0 deletions
diff --git a/MAINTAINERS b/MAINTAINERS
index 6f7ccf628e07..7c5e2e4d3854 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -14363,6 +14363,14 @@ F: include/net/rose.h
F: include/uapi/linux/rose.h
F: net/rose/
+ROTATION DRIVER FOR ALLWINNER A83T
+M: Jernej Skrabec <jernej.skrabec@siol.net>
+L: linux-media@vger.kernel.org
+T: git git://linuxtv.org/media_tree.git
+S: Maintained
+F: drivers/media/platform/sunxi/sun8i-rotate/
+F: Documentation/devicetree/bindings/media/allwinner,sun8i-a83t-de2-rotate.yaml
+
RTL2830 MEDIA DRIVER
M: Antti Palosaari <crope@iki.fi>
L: linux-media@vger.kernel.org
diff --git a/drivers/media/platform/Kconfig b/drivers/media/platform/Kconfig
index 965b7b6bb557..e01bbb9dd1c1 100644
--- a/drivers/media/platform/Kconfig
+++ b/drivers/media/platform/Kconfig
@@ -507,6 +507,18 @@ config VIDEO_SUN8I_DEINTERLACE
capability found on some SoCs, like H3.
To compile this driver as a module choose m here.
+config VIDEO_SUN8I_ROTATE
+ tristate "Allwinner DE2 rotation driver"
+ depends on VIDEO_DEV && VIDEO_V4L2
+ depends on ARCH_SUNXI || COMPILE_TEST
+ depends on COMMON_CLK && OF
+ depends on PM
+ select VIDEOBUF2_DMA_CONTIG
+ select V4L2_MEM2MEM_DEV
+ help
+ Support for the Allwinner DE2 rotation unit.
+ To compile this driver as a module choose m here.
+
endif # V4L_MEM2MEM_DRIVERS
# TI VIDEO PORT Helper Modules
diff --git a/drivers/media/platform/sunxi/Makefile b/drivers/media/platform/sunxi/Makefile
index 3878cb4efdc2..ff0993f70dc3 100644
--- a/drivers/media/platform/sunxi/Makefile
+++ b/drivers/media/platform/sunxi/Makefile
@@ -1,3 +1,4 @@
obj-y += sun4i-csi/
obj-y += sun6i-csi/
obj-y += sun8i-di/
+obj-y += sun8i-rotate/
diff --git a/drivers/media/platform/sunxi/sun8i-rotate/Makefile b/drivers/media/platform/sunxi/sun8i-rotate/Makefile
new file mode 100644
index 000000000000..40f9cf398e98
--- /dev/null
+++ b/drivers/media/platform/sunxi/sun8i-rotate/Makefile
@@ -0,0 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0
+sun8i-rotate-y += sun8i_rotate.o
+sun8i-rotate-y += sun8i_formats.o
+
+obj-$(CONFIG_VIDEO_SUN8I_ROTATE) += sun8i-rotate.o
diff --git a/drivers/media/platform/sunxi/sun8i-rotate/sun8i-formats.h b/drivers/media/platform/sunxi/sun8i-rotate/sun8i-formats.h
new file mode 100644
index 000000000000..697cd5fadd5f
--- /dev/null
+++ b/drivers/media/platform/sunxi/sun8i-rotate/sun8i-formats.h
@@ -0,0 +1,25 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (C) 2020 Jernej Skrabec <jernej.skrabec@siol.net> */
+
+#ifndef _SUN8I_FORMATS_H_
+#define _SUN8I_FORMATS_H_
+
+#include <linux/videodev2.h>
+
+#define ROTATE_FLAG_YUV BIT(0)
+#define ROTATE_FLAG_OUTPUT BIT(1)
+
+struct rotate_format {
+ u32 fourcc;
+ u32 hw_format;
+ int planes;
+ int bpp[3];
+ int hsub;
+ int vsub;
+ unsigned int flags;
+};
+
+const struct rotate_format *rotate_find_format(u32 pixelformat);
+int rotate_enum_fmt(struct v4l2_fmtdesc *f, bool dst);
+
+#endif
diff --git a/drivers/media/platform/sunxi/sun8i-rotate/sun8i-rotate.h b/drivers/media/platform/sunxi/sun8i-rotate/sun8i-rotate.h
new file mode 100644
index 000000000000..32ade97ba572
--- /dev/null
+++ b/drivers/media/platform/sunxi/sun8i-rotate/sun8i-rotate.h
@@ -0,0 +1,135 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Allwinner DE2 rotation driver
+ *
+ * Copyright (C) 2020 Jernej Skrabec <jernej.skrabec@siol.net>
+ */
+
+#ifndef _SUN8I_ROTATE_H_
+#define _SUN8I_ROTATE_H_
+
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-mem2mem.h>
+#include <media/videobuf2-v4l2.h>
+#include <media/videobuf2-dma-contig.h>
+
+#include <linux/platform_device.h>
+
+#define ROTATE_NAME "sun8i-rotate"
+
+#define ROTATE_GLB_CTL 0x00
+#define ROTATE_GLB_CTL_START BIT(31)
+#define ROTATE_GLB_CTL_RESET BIT(30)
+#define ROTATE_GLB_CTL_BURST_LEN(x) ((x) << 16)
+#define ROTATE_GLB_CTL_HFLIP BIT(7)
+#define ROTATE_GLB_CTL_VFLIP BIT(6)
+#define ROTATE_GLB_CTL_ROTATION(x) ((x) << 4)
+#define ROTATE_GLB_CTL_MODE(x) ((x) << 0)
+
+#define ROTATE_INT 0x04
+#define ROTATE_INT_FINISH_IRQ_EN BIT(16)
+#define ROTATE_INT_FINISH_IRQ BIT(0)
+
+#define ROTATE_IN_FMT 0x20
+#define ROTATE_IN_FMT_FORMAT(x) ((x) << 0)
+
+#define ROTATE_IN_SIZE 0x24
+#define ROTATE_IN_PITCH0 0x30
+#define ROTATE_IN_PITCH1 0x34
+#define ROTATE_IN_PITCH2 0x38
+#define ROTATE_IN_ADDRL0 0x40
+#define ROTATE_IN_ADDRH0 0x44
+#define ROTATE_IN_ADDRL1 0x48
+#define ROTATE_IN_ADDRH1 0x4c
+#define ROTATE_IN_ADDRL2 0x50
+#define ROTATE_IN_ADDRH2 0x54
+#define ROTATE_OUT_SIZE 0x84
+#define ROTATE_OUT_PITCH0 0x90
+#define ROTATE_OUT_PITCH1 0x94
+#define ROTATE_OUT_PITCH2 0x98
+#define ROTATE_OUT_ADDRL0 0xA0
+#define ROTATE_OUT_ADDRH0 0xA4
+#define ROTATE_OUT_ADDRL1 0xA8
+#define ROTATE_OUT_ADDRH1 0xAC
+#define ROTATE_OUT_ADDRL2 0xB0
+#define ROTATE_OUT_ADDRH2 0xB4
+
+#define ROTATE_BURST_8 0x07
+#define ROTATE_BURST_16 0x0f
+#define ROTATE_BURST_32 0x1f
+#define ROTATE_BURST_64 0x3f
+
+#define ROTATE_MODE_COPY_ROTATE 0x01
+
+#define ROTATE_FORMAT_ARGB32 0x00
+#define ROTATE_FORMAT_ABGR32 0x01
+#define ROTATE_FORMAT_RGBA32 0x02
+#define ROTATE_FORMAT_BGRA32 0x03
+#define ROTATE_FORMAT_XRGB32 0x04
+#define ROTATE_FORMAT_XBGR32 0x05
+#define ROTATE_FORMAT_RGBX32 0x06
+#define ROTATE_FORMAT_BGRX32 0x07
+#define ROTATE_FORMAT_RGB24 0x08
+#define ROTATE_FORMAT_BGR24 0x09
+#define ROTATE_FORMAT_RGB565 0x0a
+#define ROTATE_FORMAT_BGR565 0x0b
+#define ROTATE_FORMAT_ARGB4444 0x0c
+#define ROTATE_FORMAT_ABGR4444 0x0d
+#define ROTATE_FORMAT_RGBA4444 0x0e
+#define ROTATE_FORMAT_BGRA4444 0x0f
+#define ROTATE_FORMAT_ARGB1555 0x10
+#define ROTATE_FORMAT_ABGR1555 0x11
+#define ROTATE_FORMAT_RGBA5551 0x12
+#define ROTATE_FORMAT_BGRA5551 0x13
+
+#define ROTATE_FORMAT_YUYV 0x20
+#define ROTATE_FORMAT_UYVY 0x21
+#define ROTATE_FORMAT_YVYU 0x22
+#define ROTATE_FORMAT_VYUV 0x23
+#define ROTATE_FORMAT_NV61 0x24
+#define ROTATE_FORMAT_NV16 0x25
+#define ROTATE_FORMAT_YUV422P 0x26
+#define ROTATE_FORMAT_NV21 0x28
+#define ROTATE_FORMAT_NV12 0x29
+#define ROTATE_FORMAT_YUV420P 0x2A
+
+#define ROTATE_SIZE(w, h) (((h) - 1) << 16 | ((w) - 1))
+
+#define ROTATE_MIN_WIDTH 8U
+#define ROTATE_MIN_HEIGHT 8U
+#define ROTATE_MAX_WIDTH 4096U
+#define ROTATE_MAX_HEIGHT 4096U
+
+struct rotate_ctx {
+ struct v4l2_fh fh;
+ struct rotate_dev *dev;
+
+ struct v4l2_pix_format src_fmt;
+ struct v4l2_pix_format dst_fmt;
+
+ struct v4l2_ctrl_handler ctrl_handler;
+
+ u32 hflip;
+ u32 vflip;
+ u32 rotate;
+};
+
+struct rotate_dev {
+ struct v4l2_device v4l2_dev;
+ struct video_device vfd;
+ struct device *dev;
+ struct v4l2_m2m_dev *m2m_dev;
+
+ /* Device file mutex */
+ struct mutex dev_mutex;
+
+ void __iomem *base;
+
+ struct clk *bus_clk;
+ struct clk *mod_clk;
+
+ struct reset_control *rstc;
+};
+
+#endif
diff --git a/drivers/media/platform/sunxi/sun8i-rotate/sun8i_formats.c b/drivers/media/platform/sunxi/sun8i-rotate/sun8i_formats.c
new file mode 100644
index 000000000000..cebfbc5def38
--- /dev/null
+++ b/drivers/media/platform/sunxi/sun8i-rotate/sun8i_formats.c
@@ -0,0 +1,273 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (C) 2020 Jernej Skrabec <jernej.skrabec@siol.net> */
+
+#include "sun8i-formats.h"
+#include "sun8i-rotate.h"
+
+/*
+ * Formats not included in array:
+ * ROTATE_FORMAT_BGR565
+ * ROTATE_FORMAT_VYUV
+ */
+
+static const struct rotate_format rotate_formats[] = {
+ {
+ .fourcc = V4L2_PIX_FMT_ARGB32,
+ .hw_format = ROTATE_FORMAT_ARGB32,
+ .planes = 1,
+ .bpp = { 4, 0, 0 },
+ .hsub = 1,
+ .vsub = 1,
+ .flags = ROTATE_FLAG_OUTPUT
+ }, {
+ .fourcc = V4L2_PIX_FMT_ABGR32,
+ .hw_format = ROTATE_FORMAT_ABGR32,
+ .planes = 1,
+ .bpp = { 4, 0, 0 },
+ .hsub = 1,
+ .vsub = 1,
+ .flags = ROTATE_FLAG_OUTPUT
+ }, {
+ .fourcc = V4L2_PIX_FMT_RGBA32,
+ .hw_format = ROTATE_FORMAT_RGBA32,
+ .planes = 1,
+ .bpp = { 4, 0, 0 },
+ .hsub = 1,
+ .vsub = 1,
+ .flags = ROTATE_FLAG_OUTPUT
+ }, {
+ .fourcc = V4L2_PIX_FMT_BGRA32,
+ .hw_format = ROTATE_FORMAT_BGRA32,
+ .planes = 1,
+ .bpp = { 4, 0, 0 },
+ .hsub = 1,
+ .vsub = 1,
+ .flags = ROTATE_FLAG_OUTPUT
+ }, {
+ .fourcc = V4L2_PIX_FMT_XRGB32,
+ .hw_format = ROTATE_FORMAT_XRGB32,
+ .planes = 1,
+ .bpp = { 4, 0, 0 },
+ .hsub = 1,
+ .vsub = 1,
+ .flags = ROTATE_FLAG_OUTPUT
+ }, {
+ .fourcc = V4L2_PIX_FMT_XBGR32,
+ .hw_format = ROTATE_FORMAT_XBGR32,
+ .planes = 1,
+ .bpp = { 4, 0, 0 },
+ .hsub = 1,
+ .vsub = 1,
+ .flags = ROTATE_FLAG_OUTPUT
+ }, {
+ .fourcc = V4L2_PIX_FMT_RGB32,
+ .hw_format = ROTATE_FORMAT_RGBX32,
+ .planes = 1,
+ .bpp = { 4, 0, 0 },
+ .hsub = 1,
+ .vsub = 1,
+ .flags = ROTATE_FLAG_OUTPUT
+ }, {
+ .fourcc = V4L2_PIX_FMT_BGR32,
+ .hw_format = ROTATE_FORMAT_BGRX32,
+ .planes = 1,
+ .bpp = { 4, 0, 0 },
+ .hsub = 1,
+ .vsub = 1,
+ .flags = ROTATE_FLAG_OUTPUT
+ }, {
+ .fourcc = V4L2_PIX_FMT_RGB24,
+ .hw_format = ROTATE_FORMAT_RGB24,
+ .planes = 1,
+ .bpp = { 3, 0, 0 },
+ .hsub = 1,
+ .vsub = 1,
+ .flags = ROTATE_FLAG_OUTPUT
+ }, {
+ .fourcc = V4L2_PIX_FMT_BGR24,
+ .hw_format = ROTATE_FORMAT_BGR24,
+ .planes = 1,
+ .bpp = { 3, 0, 0 },
+ .hsub = 1,
+ .vsub = 1,
+ .flags = ROTATE_FLAG_OUTPUT
+ }, {
+ .fourcc = V4L2_PIX_FMT_RGB565,
+ .hw_format = ROTATE_FORMAT_RGB565,
+ .planes = 1,
+ .bpp = { 2, 0, 0 },
+ .hsub = 1,
+ .vsub = 1,
+ .flags = ROTATE_FLAG_OUTPUT
+ }, {
+ .fourcc = V4L2_PIX_FMT_ARGB444,
+ .hw_format = ROTATE_FORMAT_ARGB4444,
+ .planes = 1,
+ .bpp = { 2, 0, 0 },
+ .hsub = 1,
+ .vsub = 1,
+ .flags = ROTATE_FLAG_OUTPUT
+ }, {
+ .fourcc = V4L2_PIX_FMT_ABGR444,
+ .hw_format = ROTATE_FORMAT_ABGR4444,
+ .planes = 1,
+ .bpp = { 2, 0, 0 },
+ .hsub = 1,
+ .vsub = 1,
+ .flags = ROTATE_FLAG_OUTPUT
+ }, {
+ .fourcc = V4L2_PIX_FMT_RGBA444,
+ .hw_format = ROTATE_FORMAT_RGBA4444,
+ .planes = 1,
+ .bpp = { 2, 0, 0 },
+ .hsub = 1,
+ .vsub = 1,
+ .flags = ROTATE_FLAG_OUTPUT
+ }, {
+ .fourcc = V4L2_PIX_FMT_BGRA444,
+ .hw_format = ROTATE_FORMAT_BGRA4444,
+ .planes = 1,
+ .bpp = { 2, 0, 0 },
+ .hsub = 1,
+ .vsub = 1,
+ .flags = ROTATE_FLAG_OUTPUT
+ }, {
+ .fourcc = V4L2_PIX_FMT_ARGB555,
+ .hw_format = ROTATE_FORMAT_ARGB1555,
+ .planes = 1,
+ .bpp = { 2, 0, 0 },
+ .hsub = 1,
+ .vsub = 1,
+ .flags = ROTATE_FLAG_OUTPUT
+ }, {
+ .fourcc = V4L2_PIX_FMT_ABGR555,
+ .hw_format = ROTATE_FORMAT_ABGR1555,
+ .planes = 1,
+ .bpp = { 2, 0, 0 },
+ .hsub = 1,
+ .vsub = 1,
+ .flags = ROTATE_FLAG_OUTPUT
+ }, {
+ .fourcc = V4L2_PIX_FMT_RGBA555,
+ .hw_format = ROTATE_FORMAT_RGBA5551,
+ .planes = 1,
+ .bpp = { 2, 0, 0 },
+ .hsub = 1,
+ .vsub = 1,
+ .flags = ROTATE_FLAG_OUTPUT
+ }, {
+ .fourcc = V4L2_PIX_FMT_BGRA555,
+ .hw_format = ROTATE_FORMAT_BGRA5551,
+ .planes = 1,
+ .bpp = { 2, 0, 0 },
+ .hsub = 1,
+ .vsub = 1,
+ .flags = ROTATE_FLAG_OUTPUT
+ }, {
+ .fourcc = V4L2_PIX_FMT_YVYU,
+ .hw_format = ROTATE_FORMAT_YVYU,
+ .planes = 1,
+ .bpp = { 2, 0, 0 },
+ .hsub = 2,
+ .vsub = 1,
+ .flags = ROTATE_FLAG_YUV
+ }, {
+ .fourcc = V4L2_PIX_FMT_UYVY,
+ .hw_format = ROTATE_FORMAT_UYVY,
+ .planes = 1,
+ .bpp = { 2, 0, 0 },
+ .hsub = 2,
+ .vsub = 1,
+ .flags = ROTATE_FLAG_YUV
+ }, {
+ .fourcc = V4L2_PIX_FMT_YUYV,
+ .hw_format = ROTATE_FORMAT_YUYV,
+ .planes = 1,
+ .bpp = { 2, 0, 0 },
+ .hsub = 2,
+ .vsub = 1,
+ .flags = ROTATE_FLAG_YUV
+ }, {
+ .fourcc = V4L2_PIX_FMT_NV61,
+ .hw_format = ROTATE_FORMAT_NV61,
+ .planes = 2,
+ .bpp = { 1, 2, 0 },
+ .hsub = 2,
+ .vsub = 1,
+ .flags = ROTATE_FLAG_YUV
+ }, {
+ .fourcc = V4L2_PIX_FMT_NV16,
+ .hw_format = ROTATE_FORMAT_NV16,
+ .planes = 2,
+ .bpp = { 1, 2, 0 },
+ .hsub = 2,
+ .vsub = 1,
+ .flags = ROTATE_FLAG_YUV
+ }, {
+ .fourcc = V4L2_PIX_FMT_YUV422P,
+ .hw_format = ROTATE_FORMAT_YUV422P,
+ .planes = 3,
+ .bpp = { 1, 1, 1 },
+ .hsub = 2,
+ .vsub = 1,
+ .flags = ROTATE_FLAG_YUV
+ }, {
+ .fourcc = V4L2_PIX_FMT_NV21,
+ .hw_format = ROTATE_FORMAT_NV21,
+ .planes = 2,
+ .bpp = { 1, 2, 0 },
+ .hsub = 2,
+ .vsub = 2,
+ .flags = ROTATE_FLAG_YUV
+ }, {
+ .fourcc = V4L2_PIX_FMT_NV12,
+ .hw_format = ROTATE_FORMAT_NV12,
+ .planes = 2,
+ .bpp = { 1, 2, 0 },
+ .hsub = 2,
+ .vsub = 2,
+ .flags = ROTATE_FLAG_YUV
+ }, {
+ .fourcc = V4L2_PIX_FMT_YUV420,
+ .hw_format = ROTATE_FORMAT_YUV420P,
+ .planes = 3,
+ .bpp = { 1, 1, 1 },
+ .hsub = 2,
+ .vsub = 2,
+ .flags = ROTATE_FLAG_YUV | ROTATE_FLAG_OUTPUT
+ },
+};
+
+const struct rotate_format *rotate_find_format(u32 pixelformat)
+{
+ unsigned int i;
+
+ for (i = 0; i < ARRAY_SIZE(rotate_formats); i++)
+ if (rotate_formats[i].fourcc == pixelformat)
+ return &rotate_formats[i];
+
+ return NULL;
+}
+
+int rotate_enum_fmt(struct v4l2_fmtdesc *f, bool dst)
+{
+ int i, index;
+
+ index = 0;
+
+ for (i = 0; i < ARRAY_SIZE(rotate_formats); i++) {
+ /* not all formats can be used for capture buffers */
+ if (dst && !(rotate_formats[i].flags & ROTATE_FLAG_OUTPUT))
+ continue;
+
+ if (index == f->index) {
+ f->pixelformat = rotate_formats[i].fourcc;
+
+ return 0;
+ }
+
+ index++;
+ }
+
+ return -EINVAL;
+}
diff --git a/drivers/media/platform/sunxi/sun8i-rotate/sun8i_rotate.c b/drivers/media/platform/sunxi/sun8i-rotate/sun8i_rotate.c
new file mode 100644
index 000000000000..94f505d3cbad
--- /dev/null
+++ b/drivers/media/platform/sunxi/sun8i-rotate/sun8i_rotate.c
@@ -0,0 +1,924 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Allwinner sun8i DE2 rotation driver
+ *
+ * Copyright (C) 2020 Jernej Skrabec <jernej.skrabec@siol.net>
+ */
+
+#include <linux/clk.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/iopoll.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/pm_runtime.h>
+#include <linux/reset.h>
+
+#include <media/v4l2-device.h>
+#include <media/v4l2-event.h>
+#include <media/v4l2-ioctl.h>
+#include <media/v4l2-mem2mem.h>
+
+#include "sun8i-formats.h"
+#include "sun8i-rotate.h"
+
+static inline u32 rotate_read(struct rotate_dev *dev, u32 reg)
+{
+ return readl(dev->base + reg);
+}
+
+static inline void rotate_write(struct rotate_dev *dev, u32 reg, u32 value)
+{
+ writel(value, dev->base + reg);
+}
+
+static inline void rotate_set_bits(struct rotate_dev *dev, u32 reg, u32 bits)
+{
+ writel(readl(dev->base + reg) | bits, dev->base + reg);
+}
+
+static void rotate_calc_addr_pitch(dma_addr_t buffer,
+ u32 bytesperline, u32 height,
+ const struct rotate_format *fmt,
+ dma_addr_t *addr, u32 *pitch)
+{
+ u32 size;
+ int i;
+
+ for (i = 0; i < fmt->planes; i++) {
+ pitch[i] = bytesperline;
+ addr[i] = buffer;
+ if (i > 0)
+ pitch[i] /= fmt->hsub / fmt->bpp[i];
+ size = pitch[i] * height;
+ if (i > 0)
+ size /= fmt->vsub;
+ buffer += size;
+ }
+}
+
+static void rotate_device_run(void *priv)
+{
+ struct rotate_ctx *ctx = priv;
+ struct rotate_dev *dev = ctx->dev;
+ struct vb2_v4l2_buffer *src, *dst;
+ const struct rotate_format *fmt;
+ dma_addr_t addr[3];
+ u32 val, pitch[3];
+
+ src = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
+ dst = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
+
+ v4l2_m2m_buf_copy_metadata(src, dst, true);
+
+ val = ROTATE_GLB_CTL_MODE(ROTATE_MODE_COPY_ROTATE);
+ if (ctx->hflip)
+ val |= ROTATE_GLB_CTL_HFLIP;
+ if (ctx->vflip)
+ val |= ROTATE_GLB_CTL_VFLIP;
+ val |= ROTATE_GLB_CTL_ROTATION(ctx->rotate / 90);
+ if (ctx->rotate != 90 && ctx->rotate != 270)
+ val |= ROTATE_GLB_CTL_BURST_LEN(ROTATE_BURST_64);
+ else
+ val |= ROTATE_GLB_CTL_BURST_LEN(ROTATE_BURST_8);
+ rotate_write(dev, ROTATE_GLB_CTL, val);
+
+ fmt = rotate_find_format(ctx->src_fmt.pixelformat);
+ if (!fmt)
+ return;
+
+ rotate_write(dev, ROTATE_IN_FMT, ROTATE_IN_FMT_FORMAT(fmt->hw_format));
+
+ rotate_calc_addr_pitch(vb2_dma_contig_plane_dma_addr(&src->vb2_buf, 0),
+ ctx->src_fmt.bytesperline, ctx->src_fmt.height,
+ fmt, addr, pitch);
+
+ rotate_write(dev, ROTATE_IN_SIZE,
+ ROTATE_SIZE(ctx->src_fmt.width, ctx->src_fmt.height));
+
+ rotate_write(dev, ROTATE_IN_PITCH0, pitch[0]);
+ rotate_write(dev, ROTATE_IN_PITCH1, pitch[1]);
+ rotate_write(dev, ROTATE_IN_PITCH2, pitch[2]);
+
+ rotate_write(dev, ROTATE_IN_ADDRL0, addr[0]);
+ rotate_write(dev, ROTATE_IN_ADDRL1, addr[1]);
+ rotate_write(dev, ROTATE_IN_ADDRL2, addr[2]);
+
+ rotate_write(dev, ROTATE_IN_ADDRH0, 0);
+ rotate_write(dev, ROTATE_IN_ADDRH1, 0);
+ rotate_write(dev, ROTATE_IN_ADDRH2, 0);
+
+ fmt = rotate_find_format(ctx->dst_fmt.pixelformat);
+ if (!fmt)
+ return;
+
+ rotate_calc_addr_pitch(vb2_dma_contig_plane_dma_addr(&dst->vb2_buf, 0),
+ ctx->dst_fmt.bytesperline, ctx->dst_fmt.height,
+ fmt, addr, pitch);
+
+ rotate_write(dev, ROTATE_OUT_SIZE,
+ ROTATE_SIZE(ctx->dst_fmt.width, ctx->dst_fmt.height));
+
+ rotate_write(dev, ROTATE_OUT_PITCH0, pitch[0]);
+ rotate_write(dev, ROTATE_OUT_PITCH1, pitch[1]);
+ rotate_write(dev, ROTATE_OUT_PITCH2, pitch[2]);
+
+ rotate_write(dev, ROTATE_OUT_ADDRL0, addr[0]);
+ rotate_write(dev, ROTATE_OUT_ADDRL1, addr[1]);
+ rotate_write(dev, ROTATE_OUT_ADDRL2, addr[2]);
+
+ rotate_write(dev, ROTATE_OUT_ADDRH0, 0);
+ rotate_write(dev, ROTATE_OUT_ADDRH1, 0);
+ rotate_write(dev, ROTATE_OUT_ADDRH2, 0);
+
+ rotate_set_bits(dev, ROTATE_INT, ROTATE_INT_FINISH_IRQ_EN);
+ rotate_set_bits(dev, ROTATE_GLB_CTL, ROTATE_GLB_CTL_START);
+}
+
+static irqreturn_t rotate_irq(int irq, void *data)
+{
+ struct vb2_v4l2_buffer *buffer;
+ struct rotate_dev *dev = data;
+ struct rotate_ctx *ctx;
+ unsigned int val;
+
+ ctx = v4l2_m2m_get_curr_priv(dev->m2m_dev);
+ if (!ctx) {
+ v4l2_err(&dev->v4l2_dev,
+ "Instance released before the end of transaction\n");
+ return IRQ_NONE;
+ }
+
+ val = rotate_read(dev, ROTATE_INT);
+ if (!(val & ROTATE_INT_FINISH_IRQ))
+ return IRQ_NONE;
+
+ /* clear flag and disable irq */
+ rotate_write(dev, ROTATE_INT, ROTATE_INT_FINISH_IRQ);
+
+ buffer = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
+ v4l2_m2m_buf_done(buffer, VB2_BUF_STATE_DONE);
+
+ buffer = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
+ v4l2_m2m_buf_done(buffer, VB2_BUF_STATE_DONE);
+
+ v4l2_m2m_job_finish(ctx->dev->m2m_dev, ctx->fh.m2m_ctx);
+
+ return IRQ_HANDLED;
+}
+
+static inline struct rotate_ctx *rotate_file2ctx(struct file *file)
+{
+ return container_of(file->private_data, struct rotate_ctx, fh);
+}
+
+static void rotate_prepare_format(struct v4l2_pix_format *pix_fmt)
+{
+ unsigned int height, width, alignment, sizeimage, size, bpl;
+ const struct rotate_format *fmt;
+ int i;
+
+ fmt = rotate_find_format(pix_fmt->pixelformat);
+ if (!fmt)
+ return;
+
+ width = ALIGN(pix_fmt->width, fmt->hsub);
+ height = ALIGN(pix_fmt->height, fmt->vsub);
+
+ /* all pitches have to be 16 byte aligned */
+ alignment = 16;
+ if (fmt->planes > 1)
+ alignment *= fmt->hsub / fmt->bpp[1];
+ bpl = ALIGN(width * fmt->bpp[0], alignment);
+
+ sizeimage = 0;
+ for (i = 0; i < fmt->planes; i++) {
+ size = bpl * height;
+ if (i > 0) {
+ size *= fmt->bpp[i];
+ size /= fmt->hsub;
+ size /= fmt->vsub;
+ }
+ sizeimage += size;
+ }
+
+ pix_fmt->width = width;
+ pix_fmt->height = height;
+ pix_fmt->bytesperline = bpl;
+ pix_fmt->sizeimage = sizeimage;
+}
+
+static int rotate_querycap(struct file *file, void *priv,
+ struct v4l2_capability *cap)
+{
+ strscpy(cap->driver, ROTATE_NAME, sizeof(cap->driver));
+ strscpy(cap->card, ROTATE_NAME, sizeof(cap->card));
+ snprintf(cap->bus_info, sizeof(cap->bus_info),
+ "platform:%s", ROTATE_NAME);
+
+ return 0;
+}
+
+static int rotate_enum_fmt_vid_cap(struct file *file, void *priv,
+ struct v4l2_fmtdesc *f)
+{
+ return rotate_enum_fmt(f, true);
+}
+
+static int rotate_enum_fmt_vid_out(struct file *file, void *priv,
+ struct v4l2_fmtdesc *f)
+{
+ return rotate_enum_fmt(f, false);
+}
+
+static int rotate_enum_framesizes(struct file *file, void *priv,
+ struct v4l2_frmsizeenum *fsize)
+{
+ const struct rotate_format *fmt;
+
+ if (fsize->index != 0)
+ return -EINVAL;
+
+ fmt = rotate_find_format(fsize->pixel_format);
+ if (!fmt)
+ return -EINVAL;
+
+ fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE;
+ fsize->stepwise.min_width = ROTATE_MIN_WIDTH;
+ fsize->stepwise.min_height = ROTATE_MIN_HEIGHT;
+ fsize->stepwise.max_width = ROTATE_MAX_WIDTH;
+ fsize->stepwise.max_height = ROTATE_MAX_HEIGHT;
+ fsize->stepwise.step_width = fmt->hsub;
+ fsize->stepwise.step_height = fmt->vsub;
+
+ return 0;
+}
+
+static int rotate_set_cap_format(struct rotate_ctx *ctx,
+ struct v4l2_pix_format *f,
+ u32 rotate)
+{
+ const struct rotate_format *fmt;
+
+ fmt = rotate_find_format(ctx->src_fmt.pixelformat);
+ if (!fmt)
+ return -EINVAL;
+
+ if (fmt->flags & ROTATE_FLAG_YUV)
+ f->pixelformat = V4L2_PIX_FMT_YUV420;
+ else
+ f->pixelformat = ctx->src_fmt.pixelformat;
+
+ f->field = V4L2_FIELD_NONE;
+
+ if (rotate == 90 || rotate == 270) {
+ f->width = ctx->src_fmt.height;
+ f->height = ctx->src_fmt.width;
+ } else {
+ f->width = ctx->src_fmt.width;
+ f->height = ctx->src_fmt.height;
+ }
+
+ rotate_prepare_format(f);
+
+ return 0;
+}
+
+static int rotate_g_fmt_vid_cap(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ struct rotate_ctx *ctx = rotate_file2ctx(file);
+
+ f->fmt.pix = ctx->dst_fmt;
+
+ return 0;
+}
+
+static int rotate_g_fmt_vid_out(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ struct rotate_ctx *ctx = rotate_file2ctx(file);
+
+ f->fmt.pix = ctx->src_fmt;
+
+ return 0;
+}
+
+static int rotate_try_fmt_vid_cap(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ struct rotate_ctx *ctx = rotate_file2ctx(file);
+
+ return rotate_set_cap_format(ctx, &f->fmt.pix, ctx->rotate);
+}
+
+static int rotate_try_fmt_vid_out(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ if (!rotate_find_format(f->fmt.pix.pixelformat))
+ f->fmt.pix.pixelformat = V4L2_PIX_FMT_ARGB32;
+
+ if (f->fmt.pix.width < ROTATE_MIN_WIDTH)
+ f->fmt.pix.width = ROTATE_MIN_WIDTH;
+ if (f->fmt.pix.height < ROTATE_MIN_HEIGHT)
+ f->fmt.pix.height = ROTATE_MIN_HEIGHT;
+
+ if (f->fmt.pix.width > ROTATE_MAX_WIDTH)
+ f->fmt.pix.width = ROTATE_MAX_WIDTH;
+ if (f->fmt.pix.height > ROTATE_MAX_HEIGHT)
+ f->fmt.pix.height = ROTATE_MAX_HEIGHT;
+
+ f->fmt.pix.field = V4L2_FIELD_NONE;
+
+ rotate_prepare_format(&f->fmt.pix);
+
+ return 0;
+}
+
+static int rotate_s_fmt_vid_cap(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ struct rotate_ctx *ctx = rotate_file2ctx(file);
+ struct vb2_queue *vq;
+ int ret;
+
+ ret = rotate_try_fmt_vid_cap(file, priv, f);
+ if (ret)
+ return ret;
+
+ vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
+ if (vb2_is_busy(vq))
+ return -EBUSY;
+
+ ctx->dst_fmt = f->fmt.pix;
+
+ return 0;
+}
+
+static int rotate_s_fmt_vid_out(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ struct rotate_ctx *ctx = rotate_file2ctx(file);
+ struct vb2_queue *vq;
+ int ret;
+
+ ret = rotate_try_fmt_vid_out(file, priv, f);
+ if (ret)
+ return ret;
+
+ vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
+ if (vb2_is_busy(vq))
+ return -EBUSY;
+
+ /*
+ * Capture queue has to be also checked, because format and size
+ * depends on output format and size.
+ */
+ vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
+ if (vb2_is_busy(vq))
+ return -EBUSY;
+
+ ctx->src_fmt = f->fmt.pix;
+
+ /* Propagate colorspace information to capture. */
+ ctx->dst_fmt.colorspace = f->fmt.pix.colorspace;
+ ctx->dst_fmt.xfer_func = f->fmt.pix.xfer_func;
+ ctx->dst_fmt.ycbcr_enc = f->fmt.pix.ycbcr_enc;
+ ctx->dst_fmt.quantization = f->fmt.pix.quantization;
+
+ return rotate_set_cap_format(ctx, &ctx->dst_fmt, ctx->rotate);
+}
+
+static const struct v4l2_ioctl_ops rotate_ioctl_ops = {
+ .vidioc_querycap = rotate_querycap,
+
+ .vidioc_enum_framesizes = rotate_enum_framesizes,
+
+ .vidioc_enum_fmt_vid_cap = rotate_enum_fmt_vid_cap,
+ .vidioc_g_fmt_vid_cap = rotate_g_fmt_vid_cap,
+ .vidioc_try_fmt_vid_cap = rotate_try_fmt_vid_cap,
+ .vidioc_s_fmt_vid_cap = rotate_s_fmt_vid_cap,
+
+ .vidioc_enum_fmt_vid_out = rotate_enum_fmt_vid_out,
+ .vidioc_g_fmt_vid_out = rotate_g_fmt_vid_out,
+ .vidioc_try_fmt_vid_out = rotate_try_fmt_vid_out,
+ .vidioc_s_fmt_vid_out = rotate_s_fmt_vid_out,
+
+ .vidioc_reqbufs = v4l2_m2m_ioctl_reqbufs,
+ .vidioc_querybuf = v4l2_m2m_ioctl_querybuf,
+ .vidioc_qbuf = v4l2_m2m_ioctl_qbuf,
+ .vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf,
+ .vidioc_prepare_buf = v4l2_m2m_ioctl_prepare_buf,
+ .vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs,
+ .vidioc_expbuf = v4l2_m2m_ioctl_expbuf,
+
+ .vidioc_streamon = v4l2_m2m_ioctl_streamon,
+ .vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
+
+ .vidioc_log_status = v4l2_ctrl_log_status,
+ .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
+ .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
+};
+
+static int rotate_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers,
+ unsigned int *nplanes, unsigned int sizes[],
+ struct device *alloc_devs[])
+{
+ struct rotate_ctx *ctx = vb2_get_drv_priv(vq);
+ struct v4l2_pix_format *pix_fmt;
+
+ if (V4L2_TYPE_IS_OUTPUT(vq->type))
+ pix_fmt = &ctx->src_fmt;
+ else
+ pix_fmt = &ctx->dst_fmt;
+
+ if (*nplanes) {
+ if (sizes[0] < pix_fmt->sizeimage)
+ return -EINVAL;
+ } else {
+ sizes[0] = pix_fmt->sizeimage;
+ *nplanes = 1;
+ }
+
+ return 0;
+}
+
+static int rotate_buf_prepare(struct vb2_buffer *vb)
+{
+ struct vb2_queue *vq = vb->vb2_queue;
+ struct rotate_ctx *ctx = vb2_get_drv_priv(vq);
+ struct v4l2_pix_format *pix_fmt;
+
+ if (V4L2_TYPE_IS_OUTPUT(vq->type))
+ pix_fmt = &ctx->src_fmt;
+ else
+ pix_fmt = &ctx->dst_fmt;
+
+ if (vb2_plane_size(vb, 0) < pix_fmt->sizeimage)
+ return -EINVAL;
+
+ vb2_set_plane_payload(vb, 0, pix_fmt->sizeimage);
+
+ return 0;
+}
+
+static void rotate_buf_queue(struct vb2_buffer *vb)
+{
+ struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
+ struct rotate_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
+
+ v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
+}
+
+static void rotate_queue_cleanup(struct vb2_queue *vq, u32 state)
+{
+ struct rotate_ctx *ctx = vb2_get_drv_priv(vq);
+ struct vb2_v4l2_buffer *vbuf;
+
+ do {
+ if (V4L2_TYPE_IS_OUTPUT(vq->type))
+ vbuf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
+ else
+ vbuf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
+
+ if (vbuf)
+ v4l2_m2m_buf_done(vbuf, state);
+ } while (vbuf);
+}
+
+static int rotate_start_streaming(struct vb2_queue *vq, unsigned int count)
+{
+ if (V4L2_TYPE_IS_OUTPUT(vq->type)) {
+ struct rotate_ctx *ctx = vb2_get_drv_priv(vq);
+ struct device *dev = ctx->dev->dev;
+ int ret;
+
+ ret = pm_runtime_get_sync(dev);
+ if (ret < 0) {
+ dev_err(dev, "Failed to enable module\n");
+
+ return ret;
+ }
+ }
+
+ return 0;
+}
+
+static void rotate_stop_streaming(struct vb2_queue *vq)
+{
+ if (V4L2_TYPE_IS_OUTPUT(vq->type)) {
+ struct rotate_ctx *ctx = vb2_get_drv_priv(vq);
+
+ pm_runtime_put(ctx->dev->dev);
+ }
+
+ rotate_queue_cleanup(vq, VB2_BUF_STATE_ERROR);
+}
+
+static const struct vb2_ops rotate_qops = {
+ .queue_setup = rotate_queue_setup,
+ .buf_prepare = rotate_buf_prepare,
+ .buf_queue = rotate_buf_queue,
+ .start_streaming = rotate_start_streaming,
+ .stop_streaming = rotate_stop_streaming,
+ .wait_prepare = vb2_ops_wait_prepare,
+ .wait_finish = vb2_ops_wait_finish,
+};
+
+static int rotate_queue_init(void *priv, struct vb2_queue *src_vq,
+ struct vb2_queue *dst_vq)
+{
+ struct rotate_ctx *ctx = priv;
+ int ret;
+
+ src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
+ src_vq->io_modes = VB2_MMAP | VB2_DMABUF;
+ src_vq->drv_priv = ctx;
+ src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
+ src_vq->min_buffers_needed = 1;
+ src_vq->ops = &rotate_qops;
+ src_vq->mem_ops = &vb2_dma_contig_memops;
+ src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
+ src_vq->lock = &ctx->dev->dev_mutex;
+ src_vq->dev = ctx->dev->dev;
+
+ ret = vb2_queue_init(src_vq);
+ if (ret)
+ return ret;
+
+ dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ dst_vq->io_modes = VB2_MMAP | VB2_DMABUF;
+ dst_vq->drv_priv = ctx;
+ dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
+ dst_vq->min_buffers_needed = 2;
+ dst_vq->ops = &rotate_qops;
+ dst_vq->mem_ops = &vb2_dma_contig_memops;
+ dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
+ dst_vq->lock = &ctx->dev->dev_mutex;
+ dst_vq->dev = ctx->dev->dev;
+
+ ret = vb2_queue_init(dst_vq);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static int rotate_s_ctrl(struct v4l2_ctrl *ctrl)
+{
+ struct rotate_ctx *ctx = container_of(ctrl->handler,
+ struct rotate_ctx,
+ ctrl_handler);
+ struct v4l2_pix_format fmt;
+
+ switch (ctrl->id) {
+ case V4L2_CID_HFLIP:
+ ctx->hflip = ctrl->val;
+ break;
+ case V4L2_CID_VFLIP:
+ ctx->vflip = ctrl->val;
+ break;
+ case V4L2_CID_ROTATE:
+ rotate_set_cap_format(ctx, &fmt, ctrl->val);
+
+ /* Check if capture format needs to be changed */
+ if (fmt.width != ctx->dst_fmt.width ||
+ fmt.height != ctx->dst_fmt.height ||
+ fmt.bytesperline != ctx->dst_fmt.bytesperline ||
+ fmt.sizeimage != ctx->dst_fmt.sizeimage) {
+ struct vb2_queue *vq;
+
+ vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx,
+ V4L2_BUF_TYPE_VIDEO_CAPTURE);
+ if (vb2_is_busy(vq))
+ return -EBUSY;
+
+ rotate_set_cap_format(ctx, &ctx->dst_fmt, ctrl->val);
+ }
+
+ ctx->rotate = ctrl->val;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static const struct v4l2_ctrl_ops rotate_ctrl_ops = {
+ .s_ctrl = rotate_s_ctrl,
+};
+
+static int rotate_setup_ctrls(struct rotate_ctx *ctx)
+{
+ v4l2_ctrl_handler_init(&ctx->ctrl_handler, 3);
+
+ v4l2_ctrl_new_std(&ctx->ctrl_handler, &rotate_ctrl_ops,
+ V4L2_CID_HFLIP, 0, 1, 1, 0);
+
+ v4l2_ctrl_new_std(&ctx->ctrl_handler, &rotate_ctrl_ops,
+ V4L2_CID_VFLIP, 0, 1, 1, 0);
+
+ v4l2_ctrl_new_std(&ctx->ctrl_handler, &rotate_ctrl_ops,
+ V4L2_CID_ROTATE, 0, 270, 90, 0);
+
+ if (ctx->ctrl_handler.error) {
+ int err = ctx->ctrl_handler.error;
+
+ v4l2_err(&ctx->dev->v4l2_dev, "control setup failed!\n");
+ v4l2_ctrl_handler_free(&ctx->ctrl_handler);
+
+ return err;
+ }
+
+ return v4l2_ctrl_handler_setup(&ctx->ctrl_handler);
+}
+
+static int rotate_open(struct file *file)
+{
+ struct rotate_dev *dev = video_drvdata(file);
+ struct rotate_ctx *ctx = NULL;
+ int ret;
+
+ if (mutex_lock_interruptible(&dev->dev_mutex))
+ return -ERESTARTSYS;
+
+ ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
+ if (!ctx) {
+ mutex_unlock(&dev->dev_mutex);
+ return -ENOMEM;
+ }
+
+ /* default output format */
+ ctx->src_fmt.pixelformat = V4L2_PIX_FMT_ARGB32;
+ ctx->src_fmt.field = V4L2_FIELD_NONE;
+ ctx->src_fmt.width = 640;
+ ctx->src_fmt.height = 480;
+ rotate_prepare_format(&ctx->src_fmt);
+
+ /* default capture format */
+ rotate_set_cap_format(ctx, &ctx->dst_fmt, ctx->rotate);
+
+ v4l2_fh_init(&ctx->fh, video_devdata(file));
+ file->private_data = &ctx->fh;
+ ctx->dev = dev;
+
+ ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(dev->m2m_dev, ctx,
+ &rotate_queue_init);
+ if (IS_ERR(ctx->fh.m2m_ctx)) {
+ ret = PTR_ERR(ctx->fh.m2m_ctx);
+ goto err_free;
+ }
+
+ v4l2_fh_add(&ctx->fh);
+
+ ret = rotate_setup_ctrls(ctx);
+ if (ret)
+ goto err_free;
+
+ ctx->fh.ctrl_handler = &ctx->ctrl_handler;
+
+ mutex_unlock(&dev->dev_mutex);
+
+ return 0;
+
+err_free:
+ kfree(ctx);
+ mutex_unlock(&dev->dev_mutex);
+
+ return ret;
+}
+
+static int rotate_release(struct file *file)
+{
+ struct rotate_dev *dev = video_drvdata(file);
+ struct rotate_ctx *ctx = container_of(file->private_data,
+ struct rotate_ctx, fh);
+
+ mutex_lock(&dev->dev_mutex);
+
+ v4l2_ctrl_handler_free(&ctx->ctrl_handler);
+ v4l2_fh_del(&ctx->fh);
+ v4l2_fh_exit(&ctx->fh);
+ v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
+
+ kfree(ctx);
+
+ mutex_unlock(&dev->dev_mutex);
+
+ return 0;
+}
+
+static const struct v4l2_file_operations rotate_fops = {
+ .owner = THIS_MODULE,
+ .open = rotate_open,
+ .release = rotate_release,
+ .poll = v4l2_m2m_fop_poll,
+ .unlocked_ioctl = video_ioctl2,
+ .mmap = v4l2_m2m_fop_mmap,
+};
+
+static const struct video_device rotate_video_device = {
+ .name = ROTATE_NAME,
+ .vfl_dir = VFL_DIR_M2M,
+ .fops = &rotate_fops,
+ .ioctl_ops = &rotate_ioctl_ops,
+ .minor = -1,
+ .release = video_device_release_empty,
+ .device_caps = V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING,
+};
+
+static const struct v4l2_m2m_ops rotate_m2m_ops = {
+ .device_run = rotate_device_run,
+};
+
+static int rotate_probe(struct platform_device *pdev)
+{
+ struct rotate_dev *dev;
+ struct video_device *vfd;
+ int irq, ret;
+
+ dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL);
+ if (!dev)
+ return -ENOMEM;
+
+ dev->vfd = rotate_video_device;
+ dev->dev = &pdev->dev;
+
+ irq = platform_get_irq(pdev, 0);
+ if (irq <= 0) {
+ dev_err(dev->dev, "Failed to get IRQ\n");
+
+ return irq;
+ }
+
+ ret = devm_request_irq(dev->dev, irq, rotate_irq,
+ 0, dev_name(dev->dev), dev);
+ if (ret) {
+ dev_err(dev->dev, "Failed to request IRQ\n");
+
+ return ret;
+ }
+
+ dev->base = devm_platform_ioremap_resource(pdev, 0);
+ if (IS_ERR(dev->base))
+ return PTR_ERR(dev->base);
+
+ dev->bus_clk = devm_clk_get(dev->dev, "bus");
+ if (IS_ERR(dev->bus_clk)) {
+ dev_err(dev->dev, "Failed to get bus clock\n");
+
+ return PTR_ERR(dev->bus_clk);
+ }
+
+ dev->mod_clk = devm_clk_get(dev->dev, "mod");
+ if (IS_ERR(dev->mod_clk)) {
+ dev_err(dev->dev, "Failed to get mod clock\n");
+
+ return PTR_ERR(dev->mod_clk);
+ }
+
+ dev->rstc = devm_reset_control_get(dev->dev, NULL);
+ if (IS_ERR(dev->rstc)) {
+ dev_err(dev->dev, "Failed to get reset control\n");
+
+ return PTR_ERR(dev->rstc);
+ }
+
+ mutex_init(&dev->dev_mutex);
+
+ ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev);
+ if (ret) {
+ dev_err(dev->dev, "Failed to register V4L2 device\n");
+
+ return ret;
+ }
+
+ vfd = &dev->vfd;
+ vfd->lock = &dev->dev_mutex;
+ vfd->v4l2_dev = &dev->v4l2_dev;
+
+ snprintf(vfd->name, sizeof(vfd->name), "%s",
+ rotate_video_device.name);
+ video_set_drvdata(vfd, dev);
+
+ ret = video_register_device(vfd, VFL_TYPE_VIDEO, 0);
+ if (ret) {
+ v4l2_err(&dev->v4l2_dev, "Failed to register video device\n");
+
+ goto err_v4l2;
+ }
+
+ v4l2_info(&dev->v4l2_dev,
+ "Device registered as /dev/video%d\n", vfd->num);
+
+ dev->m2m_dev = v4l2_m2m_init(&rotate_m2m_ops);
+ if (IS_ERR(dev->m2m_dev)) {
+ v4l2_err(&dev->v4l2_dev,
+ "Failed to initialize V4L2 M2M device\n");
+ ret = PTR_ERR(dev->m2m_dev);
+
+ goto err_video;
+ }
+
+ platform_set_drvdata(pdev, dev);
+
+ pm_runtime_enable(dev->dev);
+
+ return 0;
+
+err_video:
+ video_unregister_device(&dev->vfd);
+err_v4l2:
+ v4l2_device_unregister(&dev->v4l2_dev);
+
+ return ret;
+}
+
+static int rotate_remove(struct platform_device *pdev)
+{
+ struct rotate_dev *dev = platform_get_drvdata(pdev);
+
+ v4l2_m2m_release(dev->m2m_dev);
+ video_unregister_device(&dev->vfd);
+ v4l2_device_unregister(&dev->v4l2_dev);
+
+ pm_runtime_force_suspend(&pdev->dev);
+
+ return 0;
+}
+
+static int rotate_runtime_resume(struct device *device)
+{
+ struct rotate_dev *dev = dev_get_drvdata(device);
+ int ret;
+
+ ret = clk_prepare_enable(dev->bus_clk);
+ if (ret) {
+ dev_err(dev->dev, "Failed to enable bus clock\n");
+
+ return ret;
+ }
+
+ ret = clk_prepare_enable(dev->mod_clk);
+ if (ret) {
+ dev_err(dev->dev, "Failed to enable mod clock\n");
+
+ goto err_bus_clk;
+ }
+
+ ret = reset_control_deassert(dev->rstc);
+ if (ret) {
+ dev_err(dev->dev, "Failed to apply reset\n");
+
+ goto err_mod_clk;
+ }
+
+ return 0;
+
+err_mod_clk:
+ clk_disable_unprepare(dev->mod_clk);
+err_bus_clk:
+ clk_disable_unprepare(dev->bus_clk);
+
+ return ret;
+}
+
+static int rotate_runtime_suspend(struct device *device)
+{
+ struct rotate_dev *dev = dev_get_drvdata(device);
+
+ reset_control_assert(dev->rstc);
+
+ clk_disable_unprepare(dev->mod_clk);
+ clk_disable_unprepare(dev->bus_clk);
+
+ return 0;
+}
+
+static const struct of_device_id rotate_dt_match[] = {
+ { .compatible = "allwinner,sun8i-a83t-de2-rotate" },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, rotate_dt_match);
+
+static const struct dev_pm_ops rotate_pm_ops = {
+ .runtime_resume = rotate_runtime_resume,
+ .runtime_suspend = rotate_runtime_suspend,
+};
+
+static struct platform_driver rotate_driver = {
+ .probe = rotate_probe,
+ .remove = rotate_remove,
+ .driver = {
+ .name = ROTATE_NAME,
+ .of_match_table = rotate_dt_match,
+ .pm = &rotate_pm_ops,
+ },
+};
+module_platform_driver(rotate_driver);
+
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Jernej Skrabec <jernej.skrabec@siol.net>");
+MODULE_DESCRIPTION("Allwinner DE2 rotate driver");

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