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Message-Id: <20210311002854.13687-7-mirela.rabulea@oss.nxp.com>
Date: Thu, 11 Mar 2021 02:28:52 +0200
From: "Mirela Rabulea (OSS)" <mirela.rabulea@....nxp.com>
To: mchehab@...nel.org, hverkuil-cisco@...all.nl, shawnguo@...nel.org,
robh+dt@...nel.org, p.zabel@...gutronix.de
Cc: paul.kocialkowski@...tlin.com, linux-media@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-imx@....com,
s.hauer@...gutronix.de, aisheng.dong@....com,
daniel.baluta@....com, robert.chiras@....com,
laurentiu.palcu@....com, mark.rutland@....com,
devicetree@...r.kernel.org, ezequiel@...labora.com,
laurent.pinchart+renesas@...asonboard.com,
niklas.soderlund+renesas@...natech.se,
dafna.hirschfeld@...labora.com,
Mirela Rabulea <mirela.rabulea@....com>
Subject: [PATCH v9 6/8] media: imx-jpeg: Add V4L2 driver for i.MX8 JPEG Encoder/Decoder
From: Mirela Rabulea <mirela.rabulea@....com>
V4L2 driver for the JPEG encoder/decoder from i.MX8QXP/i.MX8QM application
processors.
The multi-planar buffers API is used.
Baseline and extended sequential jpeg decoding is supported.
Progressive jpeg decoding is not supported by the IP.
Supports encode and decode of various formats:
YUV444, YUV422, YUV420, RGB, ARGB, Gray
YUV420 is the only multi-planar format supported.
Minimum resolution is 64 x 64, maximum 8192 x 8192.
The alignment requirements for the resolution depend on the format,
multiple of 16 resolutions should work for all formats.
v4l2-compliance tests are passing, including the
streaming tests, "v4l2-compliance -s"
Signed-off-by: Mirela Rabulea <mirela.rabulea@....com>
---
Changes in v9:
Added comment to clearly state this driver will only support full-range quantization for YUV
Squash the jpeg helper patch (former patch 9) into this one
Simplified 2 dev_dbg's, to avoid kernel test robot warning:
dma_addr_t type is ong long unsigned int for arm64, versus unsigned int for powerpc64
which is used by kernel test robot)
I have received feedback on this patch over time from:
Hans Verkuil, Philipp Zabel, Laurentiu Palcu, Ezequiel Garcia
Thanks everyone for taking the time to review.
I got one explicit Reviewed-by from Philipp, for the jpeg helpers integration, from former patch 9 which was squashed here.
Full change log here:
Changes in v8:
Fixes after feedback from Hans:
-Use v4l2_disable_ioctl() to disable the VIDIOC_(TRY)_ENCODER_CMD ioctls
for the decoder and the VIDIOC_(TRY)_DECODER_CMD ioctls for the encoder,
and drop the checks from mxc_jpeg_decoder_cmd/mxc_jpeg_encoder_cmd
-Fix mxc_jpeg_queue_setup for CREATE_BUFS situation,
return 0 to avoid overwriting sizes array.
-Fold release_active_buffers into mxc_jpeg_stop_streaming,
fix it so it does not touch internal vb2_queue data structures,
use vim2m_stop_streaming as model.
-Always set V4L2_FIELD_NONE in mxc_jpeg_buf_out_validate
-Rename decoder -> codec in mxc_jpeg_querycap,
since this driver is used for both encoder and decoder.
-Drop buffer index out of range check from mxc_jpeg_qbuf,
since it is done inside vb2_queue_or_prepare_buf.
In fact, drop mxc_jpeg_qbuf alltogether, just use v4l2_m2m_ioctl_qbuf.
-Move the setting of V4L2_FIELD_NONE from to mxc_jpeg_dqbuf
to mxc_jpeg_buf_prepare()
-Replace mxc_jpeg_try_decoder_cmd with v4l2_m2m_ioctl_try_decoder_cmd
Also replace mxc_jpeg_try_encoder_cmd with v4l2_m2m_ioctl_try_encoder_cmd
Changes in v7:
Add print_mxc_buf() to replace print_buf_preview() and print_nbuf_to_eoi(),
and inside, use the print_hex_dump() from printk.h, also, print all the planes.
Changes in v5:
Fixes after feedback from Laurentiu, Hans:
Properly indented data blocks for encoder configuration stream
one tab to the right.
Remove fourcc_to_str, instead just print the format directly (%c%c%c%c)
Use the "debug" module parameter instead of "mxc_jpeg_tracing".
Change return type for get_byte function (end of jpeg stream was not properly detected, visible only with corrupted stream)
Use NULL instead of 0 for NULL pointers.
Add a check to exit jpeg parse if stream does not start with SOI (slow run on v4l2-compliance streaming tests otherwise, the same problem was fixed in jpeg helpers)
Change compatible name to match patch 3
Fix colorspace information to sRGB for both output & capture (latest v4l2-compliance fail)
Squashed patch 7 (v4l2-compliance streaming test fix for decoder)
Changes in v4:
The main change is using the common jpeg helpers in imx-jpeg (feedback from Ezequiel)
Patch 7 - new, fixed a problem with v4l2-compliance streaming tests on decoder
small update: VFL_TYPE_VIDEO-> VFL_TYPE_GRABBER and 2 typos
Changes in v2:
Fix v4l2-compliance streaming tests, "v4l2-compliance -s"
Fixup some whitespaces in mxc_jpeg_ioctl_ops.
Fixed one inconsistent indentation reported by kernel test robot
drivers/media/platform/Kconfig | 2 +
drivers/media/platform/Makefile | 1 +
drivers/media/platform/imx-jpeg/Kconfig | 11 +
drivers/media/platform/imx-jpeg/Makefile | 3 +
drivers/media/platform/imx-jpeg/mxc-jpeg-hw.c | 168 ++
drivers/media/platform/imx-jpeg/mxc-jpeg-hw.h | 140 ++
drivers/media/platform/imx-jpeg/mxc-jpeg.c | 2122 +++++++++++++++++
drivers/media/platform/imx-jpeg/mxc-jpeg.h | 180 ++
8 files changed, 2627 insertions(+)
create mode 100644 drivers/media/platform/imx-jpeg/Kconfig
create mode 100644 drivers/media/platform/imx-jpeg/Makefile
create mode 100644 drivers/media/platform/imx-jpeg/mxc-jpeg-hw.c
create mode 100644 drivers/media/platform/imx-jpeg/mxc-jpeg-hw.h
create mode 100644 drivers/media/platform/imx-jpeg/mxc-jpeg.c
create mode 100644 drivers/media/platform/imx-jpeg/mxc-jpeg.h
diff --git a/drivers/media/platform/Kconfig b/drivers/media/platform/Kconfig
index 1ddb5d6354cf..ac07db1a5104 100644
--- a/drivers/media/platform/Kconfig
+++ b/drivers/media/platform/Kconfig
@@ -239,6 +239,8 @@ config VIDEO_IMX_PXP
The i.MX Pixel Pipeline is a memory-to-memory engine for scaling,
color space conversion, and rotation.
+source "drivers/media/platform/imx-jpeg/Kconfig"
+
config VIDEO_MEDIATEK_JPEG
tristate "Mediatek JPEG Codec driver"
depends on MTK_IOMMU_V1 || MTK_IOMMU || COMPILE_TEST
diff --git a/drivers/media/platform/Makefile b/drivers/media/platform/Makefile
index 9d4d6370908d..eedc14aafb32 100644
--- a/drivers/media/platform/Makefile
+++ b/drivers/media/platform/Makefile
@@ -21,6 +21,7 @@ obj-$(CONFIG_VIDEO_MX2_EMMAPRP) += mx2_emmaprp.o
obj-$(CONFIG_VIDEO_CODA) += coda/
obj-$(CONFIG_VIDEO_IMX_PXP) += imx-pxp.o
+obj-$(CONFIG_VIDEO_IMX8_JPEG) += imx-jpeg/
obj-$(CONFIG_VIDEO_MEM2MEM_DEINTERLACE) += m2m-deinterlace.o
diff --git a/drivers/media/platform/imx-jpeg/Kconfig b/drivers/media/platform/imx-jpeg/Kconfig
new file mode 100644
index 000000000000..d875f7c88cda
--- /dev/null
+++ b/drivers/media/platform/imx-jpeg/Kconfig
@@ -0,0 +1,11 @@
+# SPDX-License-Identifier: GPL-2.0
+config VIDEO_IMX8_JPEG
+ tristate "IMX8 JPEG Encoder/Decoder"
+ depends on VIDEO_DEV && VIDEO_V4L2
+ select VIDEOBUF2_DMA_CONTIG
+ select V4L2_MEM2MEM_DEV
+ select V4L2_JPEG_HELPER
+ default m
+ help
+ This is a video4linux2 driver for the i.MX8 QXP/QM integrated
+ JPEG encoder/decoder.
diff --git a/drivers/media/platform/imx-jpeg/Makefile b/drivers/media/platform/imx-jpeg/Makefile
new file mode 100644
index 000000000000..bf19c82e61b4
--- /dev/null
+++ b/drivers/media/platform/imx-jpeg/Makefile
@@ -0,0 +1,3 @@
+# SPDX-License-Identifier: GPL-2.0
+mxc-jpeg-encdec-objs := mxc-jpeg-hw.o mxc-jpeg.o
+obj-$(CONFIG_VIDEO_IMX8_JPEG) += mxc-jpeg-encdec.o
diff --git a/drivers/media/platform/imx-jpeg/mxc-jpeg-hw.c b/drivers/media/platform/imx-jpeg/mxc-jpeg-hw.c
new file mode 100644
index 000000000000..29c604b1b179
--- /dev/null
+++ b/drivers/media/platform/imx-jpeg/mxc-jpeg-hw.c
@@ -0,0 +1,168 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * i.MX8QXP/i.MX8QM JPEG encoder/decoder v4l2 driver
+ *
+ * Copyright 2018-2019 NXP
+ */
+
+#include <linux/delay.h>
+#include <media/videobuf2-core.h>
+#include "mxc-jpeg-hw.h"
+
+#define print_wrapper_reg(dev, base_address, reg_offset)\
+ internal_print_wrapper_reg(dev, (base_address), #reg_offset,\
+ (reg_offset))
+#define internal_print_wrapper_reg(dev, base_address, reg_name, reg_offset) {\
+ int val;\
+ val = readl((base_address) + (reg_offset));\
+ dev_dbg(dev, "Wrapper reg %s = 0x%x\n", reg_name, val);\
+}
+
+void print_descriptor_info(struct device *dev, struct mxc_jpeg_desc *desc)
+{
+ dev_dbg(dev, " MXC JPEG NEXT_DESCPT_PTR 0x%x\n",
+ desc->next_descpt_ptr);
+ dev_dbg(dev, " MXC JPEG BUF_BASE0 0x%x\n", desc->buf_base0);
+ dev_dbg(dev, " MXC JPEG BUF_BASE1 0x%x\n", desc->buf_base1);
+ dev_dbg(dev, " MXC JPEG LINE_PITCH %d\n", desc->line_pitch);
+ dev_dbg(dev, " MXC JPEG STM_BUFBASE 0x%x\n", desc->stm_bufbase);
+ dev_dbg(dev, " MXC JPEG STM_BUFSIZE %d\n", desc->stm_bufsize);
+ dev_dbg(dev, " MXC JPEG IMGSIZE %x (%d x %d)\n", desc->imgsize,
+ desc->imgsize >> 16, desc->imgsize & 0xFFFF);
+ dev_dbg(dev, " MXC JPEG STM_CTRL 0x%x\n", desc->stm_ctrl);
+}
+
+void print_cast_status(struct device *dev, void __iomem *reg,
+ unsigned int mode)
+{
+ dev_dbg(dev, "CAST IP status regs:\n");
+ print_wrapper_reg(dev, reg, CAST_STATUS0);
+ print_wrapper_reg(dev, reg, CAST_STATUS1);
+ print_wrapper_reg(dev, reg, CAST_STATUS2);
+ print_wrapper_reg(dev, reg, CAST_STATUS3);
+ print_wrapper_reg(dev, reg, CAST_STATUS4);
+ print_wrapper_reg(dev, reg, CAST_STATUS5);
+ print_wrapper_reg(dev, reg, CAST_STATUS6);
+ print_wrapper_reg(dev, reg, CAST_STATUS7);
+ print_wrapper_reg(dev, reg, CAST_STATUS8);
+ print_wrapper_reg(dev, reg, CAST_STATUS9);
+ print_wrapper_reg(dev, reg, CAST_STATUS10);
+ print_wrapper_reg(dev, reg, CAST_STATUS11);
+ print_wrapper_reg(dev, reg, CAST_STATUS12);
+ print_wrapper_reg(dev, reg, CAST_STATUS13);
+ if (mode == MXC_JPEG_DECODE)
+ return;
+ print_wrapper_reg(dev, reg, CAST_STATUS14);
+ print_wrapper_reg(dev, reg, CAST_STATUS15);
+ print_wrapper_reg(dev, reg, CAST_STATUS16);
+ print_wrapper_reg(dev, reg, CAST_STATUS17);
+ print_wrapper_reg(dev, reg, CAST_STATUS18);
+ print_wrapper_reg(dev, reg, CAST_STATUS19);
+}
+
+void print_wrapper_info(struct device *dev, void __iomem *reg)
+{
+ dev_dbg(dev, "Wrapper regs:\n");
+ print_wrapper_reg(dev, reg, GLB_CTRL);
+ print_wrapper_reg(dev, reg, COM_STATUS);
+ print_wrapper_reg(dev, reg, BUF_BASE0);
+ print_wrapper_reg(dev, reg, BUF_BASE1);
+ print_wrapper_reg(dev, reg, LINE_PITCH);
+ print_wrapper_reg(dev, reg, STM_BUFBASE);
+ print_wrapper_reg(dev, reg, STM_BUFSIZE);
+ print_wrapper_reg(dev, reg, IMGSIZE);
+ print_wrapper_reg(dev, reg, STM_CTRL);
+}
+
+void mxc_jpeg_enable_irq(void __iomem *reg, int slot)
+{
+ writel(0xFFFFFFFF, reg + MXC_SLOT_OFFSET(slot, SLOT_IRQ_EN));
+}
+
+void mxc_jpeg_sw_reset(void __iomem *reg)
+{
+ /*
+ * engine soft reset, internal state machine reset
+ * this will not reset registers, however, it seems
+ * the registers may remain inconsistent with the internal state
+ * so, on purpose, at least let GLB_CTRL bits clear after this reset
+ */
+ writel(GLB_CTRL_SFT_RST, reg + GLB_CTRL);
+}
+
+void mxc_jpeg_enc_mode_conf(struct device *dev, void __iomem *reg)
+{
+ dev_dbg(dev, "CAST Encoder CONFIG...\n");
+ /*
+ * "Config_Mode" enabled, "Config_Mode auto clear enabled",
+ */
+ writel(0xa0, reg + CAST_MODE);
+
+ /* all markers and segments */
+ writel(0x3ff, reg + CAST_CFG_MODE);
+
+ /* quality factor */
+ writel(0x4b, reg + CAST_QUALITY);
+}
+
+void mxc_jpeg_enc_mode_go(struct device *dev, void __iomem *reg)
+{
+ dev_dbg(dev, "CAST Encoder GO...\n");
+ /*
+ * "GO" enabled, "GO bit auto clear" enabled
+ */
+ writel(0x140, reg + CAST_MODE);
+}
+
+void mxc_jpeg_dec_mode_go(struct device *dev, void __iomem *reg)
+{
+ dev_dbg(dev, "CAST Decoder GO...\n");
+ writel(MXC_DEC_EXIT_IDLE_MODE, reg + CAST_CTRL);
+}
+
+int mxc_jpeg_enable(void __iomem *reg)
+{
+ u32 regval;
+
+ writel(GLB_CTRL_JPG_EN, reg + GLB_CTRL);
+ regval = readl(reg);
+ return regval;
+}
+
+void mxc_jpeg_enable_slot(void __iomem *reg, int slot)
+{
+ u32 regval;
+
+ regval = readl(reg + GLB_CTRL);
+ writel(GLB_CTRL_SLOT_EN(slot) | regval, reg + GLB_CTRL);
+}
+
+void mxc_jpeg_set_l_endian(void __iomem *reg, int le)
+{
+ u32 regval;
+
+ regval = readl(reg + GLB_CTRL);
+ regval &= ~GLB_CTRL_L_ENDIAN(1); /* clear */
+ writel(GLB_CTRL_L_ENDIAN(le) | regval, reg + GLB_CTRL); /* set */
+}
+
+void mxc_jpeg_set_bufsize(struct mxc_jpeg_desc *desc, u32 bufsize)
+{
+ desc->stm_bufsize = bufsize;
+}
+
+void mxc_jpeg_set_res(struct mxc_jpeg_desc *desc, u16 w, u16 h)
+{
+ desc->imgsize = w << 16 | h;
+}
+
+void mxc_jpeg_set_line_pitch(struct mxc_jpeg_desc *desc, u32 line_pitch)
+{
+ desc->line_pitch = line_pitch;
+}
+
+void mxc_jpeg_set_desc(u32 desc, void __iomem *reg, int slot)
+{
+ writel(desc | MXC_NXT_DESCPT_EN,
+ reg + MXC_SLOT_OFFSET(slot, SLOT_NXT_DESCPT_PTR));
+}
diff --git a/drivers/media/platform/imx-jpeg/mxc-jpeg-hw.h b/drivers/media/platform/imx-jpeg/mxc-jpeg-hw.h
new file mode 100644
index 000000000000..ae70d3a0dc24
--- /dev/null
+++ b/drivers/media/platform/imx-jpeg/mxc-jpeg-hw.h
@@ -0,0 +1,140 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * i.MX8QXP/i.MX8QM JPEG encoder/decoder v4l2 driver
+ *
+ * Copyright 2018-2019 NXP
+ */
+
+#ifndef _MXC_JPEG_HW_H
+#define _MXC_JPEG_HW_H
+
+/* JPEG Decoder/Encoder Wrapper Register Map */
+#define GLB_CTRL 0x0
+#define COM_STATUS 0x4
+#define BUF_BASE0 0x14
+#define BUF_BASE1 0x18
+#define LINE_PITCH 0x1C
+#define STM_BUFBASE 0x20
+#define STM_BUFSIZE 0x24
+#define IMGSIZE 0x28
+#define STM_CTRL 0x2C
+
+/* CAST JPEG-Decoder/Encoder Status Register Map (read-only)*/
+#define CAST_STATUS0 0x100
+#define CAST_STATUS1 0x104
+#define CAST_STATUS2 0x108
+#define CAST_STATUS3 0x10c
+#define CAST_STATUS4 0x110
+#define CAST_STATUS5 0x114
+#define CAST_STATUS6 0x118
+#define CAST_STATUS7 0x11c
+#define CAST_STATUS8 0x120
+#define CAST_STATUS9 0x124
+#define CAST_STATUS10 0x128
+#define CAST_STATUS11 0x12c
+#define CAST_STATUS12 0x130
+#define CAST_STATUS13 0x134
+/* the following are for encoder only */
+#define CAST_STATUS14 0x138
+#define CAST_STATUS15 0x13c
+#define CAST_STATUS16 0x140
+#define CAST_STATUS17 0x144
+#define CAST_STATUS18 0x148
+#define CAST_STATUS19 0x14c
+
+/* CAST JPEG-Decoder Control Register Map (write-only) */
+#define CAST_CTRL CAST_STATUS13
+
+/* CAST JPEG-Encoder Control Register Map (write-only) */
+#define CAST_MODE CAST_STATUS0
+#define CAST_CFG_MODE CAST_STATUS1
+#define CAST_QUALITY CAST_STATUS2
+#define CAST_RSVD CAST_STATUS3
+#define CAST_REC_REGS_SEL CAST_STATUS4
+#define CAST_LUMTH CAST_STATUS5
+#define CAST_CHRTH CAST_STATUS6
+#define CAST_NOMFRSIZE_LO CAST_STATUS7
+#define CAST_NOMFRSIZE_HI CAST_STATUS8
+#define CAST_OFBSIZE_LO CAST_STATUS9
+#define CAST_OFBSIZE_HI CAST_STATUS10
+
+#define MXC_MAX_SLOTS 1 /* TODO use all 4 slots*/
+/* JPEG-Decoder Wrapper Slot Registers 0..3 */
+#define SLOT_BASE 0x10000
+#define SLOT_STATUS 0x0
+#define SLOT_IRQ_EN 0x4
+#define SLOT_BUF_PTR 0x8
+#define SLOT_CUR_DESCPT_PTR 0xC
+#define SLOT_NXT_DESCPT_PTR 0x10
+#define MXC_SLOT_OFFSET(slot, offset) ((SLOT_BASE * ((slot) + 1)) + (offset))
+
+/* GLB_CTRL fields */
+#define GLB_CTRL_JPG_EN 0x1
+#define GLB_CTRL_SFT_RST (0x1 << 1)
+#define GLB_CTRL_DEC_GO (0x1 << 2)
+#define GLB_CTRL_L_ENDIAN(le) ((le) << 3)
+#define GLB_CTRL_SLOT_EN(slot) (0x1 << ((slot) + 4))
+
+/* COM_STAUS fields */
+#define COM_STATUS_DEC_ONGOING(r) (((r) & (1 << 31)) >> 31)
+#define COM_STATUS_CUR_SLOT(r) (((r) & (0x3 << 29)) >> 29)
+
+/* STM_CTRL fields */
+#define STM_CTRL_PIXEL_PRECISION (0x1 << 2)
+#define STM_CTRL_IMAGE_FORMAT(img_fmt) ((img_fmt) << 3)
+#define STM_CTRL_IMAGE_FORMAT_MASK (0xF << 3)
+#define STM_CTRL_BITBUF_PTR_CLR(clr) ((clr) << 7)
+#define STM_CTRL_AUTO_START(go) ((go) << 8)
+#define STM_CTRL_CONFIG_MOD(mod) ((mod) << 9)
+
+/* SLOT_STATUS fields for slots 0..3 */
+#define SLOT_STATUS_FRMDONE (0x1 << 3)
+#define SLOT_STATUS_ENC_CONFIG_ERR (0x1 << 8)
+
+/* SLOT_IRQ_EN fields TBD */
+
+#define MXC_NXT_DESCPT_EN 0x1
+#define MXC_DEC_EXIT_IDLE_MODE 0x4
+
+/* JPEG-Decoder Wrapper - STM_CTRL Register Fields */
+#define MXC_PIXEL_PRECISION(precision) ((precision) / 8 << 2)
+enum mxc_jpeg_image_format {
+ MXC_JPEG_INVALID = -1,
+ MXC_JPEG_YUV420 = 0x0, /* 2 Plannar, Y=1st plane UV=2nd plane */
+ MXC_JPEG_YUV422 = 0x1, /* 1 Plannar, YUYV sequence */
+ MXC_JPEG_RGB = 0x2, /* RGBRGB packed format */
+ MXC_JPEG_YUV444 = 0x3, /* 1 Plannar, YUVYUV sequence */
+ MXC_JPEG_GRAY = 0x4, /* Y8 or Y12 or Single Component */
+ MXC_JPEG_RESERVED = 0x5,
+ MXC_JPEG_ARGB = 0x6,
+};
+
+#include "mxc-jpeg.h"
+void print_descriptor_info(struct device *dev, struct mxc_jpeg_desc *desc);
+void print_cast_status(struct device *dev, void __iomem *reg,
+ unsigned int mode);
+void print_wrapper_info(struct device *dev, void __iomem *reg);
+void mxc_jpeg_sw_reset(void __iomem *reg);
+int mxc_jpeg_enable(void __iomem *reg);
+void wait_frmdone(struct device *dev, void __iomem *reg);
+void mxc_jpeg_enc_mode_conf(struct device *dev, void __iomem *reg);
+void mxc_jpeg_enc_mode_go(struct device *dev, void __iomem *reg);
+void mxc_jpeg_dec_mode_go(struct device *dev, void __iomem *reg);
+int mxc_jpeg_get_slot(void __iomem *reg);
+u32 mxc_jpeg_get_offset(void __iomem *reg, int slot);
+void mxc_jpeg_enable_slot(void __iomem *reg, int slot);
+void mxc_jpeg_set_l_endian(void __iomem *reg, int le);
+void mxc_jpeg_enable_irq(void __iomem *reg, int slot);
+int mxc_jpeg_set_input(void __iomem *reg, u32 in_buf, u32 bufsize);
+int mxc_jpeg_set_output(void __iomem *reg, u16 out_pitch, u32 out_buf,
+ u16 w, u16 h);
+void mxc_jpeg_set_config_mode(void __iomem *reg, int config_mode);
+int mxc_jpeg_set_params(struct mxc_jpeg_desc *desc, u32 bufsize, u16
+ out_pitch, u32 format);
+void mxc_jpeg_set_bufsize(struct mxc_jpeg_desc *desc, u32 bufsize);
+void mxc_jpeg_set_res(struct mxc_jpeg_desc *desc, u16 w, u16 h);
+void mxc_jpeg_set_line_pitch(struct mxc_jpeg_desc *desc, u32 line_pitch);
+void mxc_jpeg_set_desc(u32 desc, void __iomem *reg, int slot);
+void mxc_jpeg_set_regs_from_desc(struct mxc_jpeg_desc *desc,
+ void __iomem *reg);
+#endif
diff --git a/drivers/media/platform/imx-jpeg/mxc-jpeg.c b/drivers/media/platform/imx-jpeg/mxc-jpeg.c
new file mode 100644
index 000000000000..3b30e42d4d1e
--- /dev/null
+++ b/drivers/media/platform/imx-jpeg/mxc-jpeg.c
@@ -0,0 +1,2122 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * V4L2 driver for the JPEG encoder/decoder from i.MX8QXP/i.MX8QM application
+ * processors.
+ *
+ * The multi-planar buffers API is used.
+ *
+ * Baseline and extended sequential jpeg decoding is supported.
+ * Progressive jpeg decoding is not supported by the IP.
+ * Supports encode and decode of various formats:
+ * YUV444, YUV422, YUV420, RGB, ARGB, Gray
+ * YUV420 is the only multi-planar format supported.
+ * Minimum resolution is 64 x 64, maximum 8192 x 8192.
+ * To achieve 8192 x 8192, modify in defconfig: CONFIG_CMA_SIZE_MBYTES=320
+ * The alignment requirements for the resolution depend on the format,
+ * multiple of 16 resolutions should work for all formats.
+ * Special workarounds are made in the driver to support NV12 1080p.
+ * When decoding, the driver detects image resolution and pixel format
+ * from the jpeg stream, by parsing the jpeg markers.
+ *
+ * The IP has 4 slots available for context switching, but only slot 0
+ * was fully tested to work. Context switching is not used by the driver.
+ * Each driver instance (context) allocates a slot for itself, but this
+ * is postponed until device_run, to allow unlimited opens.
+ *
+ * The driver submits jobs to the IP by setting up a descriptor for the
+ * used slot, and then validating it. The encoder has an additional descriptor
+ * for the configuration phase. The driver expects FRM_DONE interrupt from
+ * IP to mark the job as finished.
+ *
+ * The decoder IP has some limitations regarding the component ID's,
+ * but the driver works around this by replacing them in the jpeg stream.
+ *
+ * A module parameter is available for debug purpose (jpeg_tracing), to enable
+ * it, enable dynamic debug for this module and:
+ * echo 1 > /sys/module/mxc_jpeg_encdec/parameters/jpeg_tracing
+ *
+ * This is inspired by the drivers/media/platform/s5p-jpeg driver
+ *
+ * Copyright 2018-2019 NXP
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/io.h>
+#include <linux/clk.h>
+#include <linux/of_platform.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/irqreturn.h>
+#include <linux/interrupt.h>
+#include <linux/pm_domain.h>
+#include <linux/string.h>
+
+#include <media/v4l2-jpeg.h>
+#include <media/v4l2-mem2mem.h>
+#include <media/v4l2-ioctl.h>
+#include <media/v4l2-common.h>
+#include <media/v4l2-event.h>
+#include <media/videobuf2-dma-contig.h>
+
+#include "mxc-jpeg-hw.h"
+#include "mxc-jpeg.h"
+
+static struct mxc_jpeg_fmt mxc_formats[] = {
+ {
+ .name = "JPEG",
+ .fourcc = V4L2_PIX_FMT_JPEG,
+ .subsampling = -1,
+ .nc = -1,
+ .colplanes = 1,
+ .flags = MXC_JPEG_FMT_TYPE_ENC,
+ },
+ {
+ .name = "RGB", /*RGBRGB packed format*/
+ .fourcc = V4L2_PIX_FMT_RGB24,
+ .subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_444,
+ .nc = 3,
+ .depth = 24,
+ .colplanes = 1,
+ .h_align = 3,
+ .v_align = 3,
+ .flags = MXC_JPEG_FMT_TYPE_RAW,
+ },
+ {
+ .name = "ARGB", /* ARGBARGB packed format */
+ .fourcc = V4L2_PIX_FMT_ARGB32,
+ .subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_444,
+ .nc = 4,
+ .depth = 32,
+ .colplanes = 1,
+ .h_align = 3,
+ .v_align = 3,
+ .flags = MXC_JPEG_FMT_TYPE_RAW,
+ },
+ {
+ .name = "YUV420", /* 1st plane = Y, 2nd plane = UV */
+ .fourcc = V4L2_PIX_FMT_NV12,
+ .subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_420,
+ .nc = 3,
+ .depth = 12, /* 6 bytes (4Y + UV) for 4 pixels */
+ .colplanes = 2, /* 1 plane Y, 1 plane UV interleaved */
+ .h_align = 4,
+ .v_align = 4,
+ .flags = MXC_JPEG_FMT_TYPE_RAW,
+ },
+ {
+ .name = "YUV422", /* YUYV */
+ .fourcc = V4L2_PIX_FMT_YUYV,
+ .subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_422,
+ .nc = 3,
+ .depth = 16,
+ .colplanes = 1,
+ .h_align = 4,
+ .v_align = 3,
+ .flags = MXC_JPEG_FMT_TYPE_RAW,
+ },
+ {
+ .name = "YUV444", /* YUVYUV */
+ .fourcc = V4L2_PIX_FMT_YUV24,
+ .subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_444,
+ .nc = 3,
+ .depth = 24,
+ .colplanes = 1,
+ .h_align = 3,
+ .v_align = 3,
+ .flags = MXC_JPEG_FMT_TYPE_RAW,
+ },
+ {
+ .name = "Gray", /* Gray (Y8/Y12) or Single Comp */
+ .fourcc = V4L2_PIX_FMT_GREY,
+ .subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_GRAY,
+ .nc = 1,
+ .depth = 8,
+ .colplanes = 1,
+ .h_align = 3,
+ .v_align = 3,
+ .flags = MXC_JPEG_FMT_TYPE_RAW,
+ },
+};
+
+#define MXC_JPEG_NUM_FORMATS ARRAY_SIZE(mxc_formats)
+
+static const struct of_device_id mxc_jpeg_match[] = {
+ {
+ .compatible = "nxp,imx8qxp-jpgdec",
+ .data = (void *)MXC_JPEG_DECODE,
+ },
+ {
+ .compatible = "nxp,imx8qxp-jpgenc",
+ .data = (void *)MXC_JPEG_ENCODE,
+ },
+ { },
+};
+
+/*
+ * default configuration stream, 64x64 yuv422
+ * split by JPEG marker, so it's easier to modify & use
+ */
+static const unsigned char jpeg_soi[] = {
+ 0xFF, 0xD8
+};
+
+static const unsigned char jpeg_app0[] = {
+ 0xFF, 0xE0,
+ 0x00, 0x10, 0x4A, 0x46, 0x49, 0x46, 0x00,
+ 0x01, 0x01, 0x00, 0x00, 0x01, 0x00, 0x01,
+ 0x00, 0x00
+};
+
+static const unsigned char jpeg_app14[] = {
+ 0xFF, 0xEE,
+ 0x00, 0x0E, 0x41, 0x64, 0x6F, 0x62, 0x65,
+ 0x00, 0x64, 0x00, 0x00, 0x00, 0x00, 0x00
+};
+
+static const unsigned char jpeg_dqt[] = {
+ 0xFF, 0xDB,
+ 0x00, 0x84, 0x00, 0x10, 0x0B, 0x0C, 0x0E,
+ 0x0C, 0x0A, 0x10, 0x0E, 0x0D, 0x0E, 0x12,
+ 0x11, 0x10, 0x13, 0x18, 0x28, 0x1A, 0x18,
+ 0x16, 0x16, 0x18, 0x31, 0x23, 0x25, 0x1D,
+ 0x28, 0x3A, 0x33, 0x3D, 0x3C, 0x39, 0x33,
+ 0x38, 0x37, 0x40, 0x48, 0x5C, 0x4E, 0x40,
+ 0x44, 0x57, 0x45, 0x37, 0x38, 0x50, 0x6D,
+ 0x51, 0x57, 0x5F, 0x62, 0x67, 0x68, 0x67,
+ 0x3E, 0x4D, 0x71, 0x79, 0x70, 0x64, 0x78,
+ 0x5C, 0x65, 0x67, 0x63, 0x01, 0x11, 0x12,
+ 0x12, 0x18, 0x15, 0x18, 0x2F, 0x1A, 0x1A,
+ 0x2F, 0x63, 0x42, 0x38, 0x42, 0x63, 0x63,
+ 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
+ 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
+ 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
+ 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
+ 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
+ 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
+ 0x63, 0x63, 0x63, 0x63, 0x63, 0x63
+};
+
+static const unsigned char jpeg_sof_maximal[] = {
+ 0xFF, 0xC0,
+ 0x00, 0x14, 0x08, 0x00, 0x40, 0x00, 0x40,
+ 0x04, 0x01, 0x11, 0x00, 0x02, 0x11, 0x01,
+ 0x03, 0x11, 0x01, 0x04, 0x11, 0x01
+};
+
+static const unsigned char jpeg_dht[] = {
+ 0xFF, 0xC4,
+ 0x01, 0xA2, 0x00, 0x00, 0x01, 0x05, 0x01,
+ 0x01, 0x01, 0x01, 0x01, 0x01, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01,
+ 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
+ 0x09, 0x0A, 0x0B, 0x10, 0x00, 0x02, 0x01,
+ 0x03, 0x03, 0x02, 0x04, 0x03, 0x05, 0x05,
+ 0x04, 0x04, 0x00, 0x00, 0x01, 0x7D, 0x01,
+ 0x02, 0x03, 0x00, 0x04, 0x11, 0x05, 0x12,
+ 0x21, 0x31, 0x41, 0x06, 0x13, 0x51, 0x61,
+ 0x07, 0x22, 0x71, 0x14, 0x32, 0x81, 0x91,
+ 0xA1, 0x08, 0x23, 0x42, 0xB1, 0xC1, 0x15,
+ 0x52, 0xD1, 0xF0, 0x24, 0x33, 0x62, 0x72,
+ 0x82, 0x09, 0x0A, 0x16, 0x17, 0x18, 0x19,
+ 0x1A, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2A,
+ 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A,
+ 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49,
+ 0x4A, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58,
+ 0x59, 0x5A, 0x63, 0x64, 0x65, 0x66, 0x67,
+ 0x68, 0x69, 0x6A, 0x73, 0x74, 0x75, 0x76,
+ 0x77, 0x78, 0x79, 0x7A, 0x83, 0x84, 0x85,
+ 0x86, 0x87, 0x88, 0x89, 0x8A, 0x92, 0x93,
+ 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9A,
+ 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7, 0xA8,
+ 0xA9, 0xAA, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6,
+ 0xB7, 0xB8, 0xB9, 0xBA, 0xC2, 0xC3, 0xC4,
+ 0xC5, 0xC6, 0xC7, 0xC8, 0xC9, 0xCA, 0xD2,
+ 0xD3, 0xD4, 0xD5, 0xD6, 0xD7, 0xD8, 0xD9,
+ 0xDA, 0xE1, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6,
+ 0xE7, 0xE8, 0xE9, 0xEA, 0xF1, 0xF2, 0xF3,
+ 0xF4, 0xF5, 0xF6, 0xF7, 0xF8, 0xF9, 0xFA,
+ 0x01, 0x00, 0x03, 0x01, 0x01, 0x01, 0x01,
+ 0x01, 0x01, 0x01, 0x01, 0x01, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x01, 0x02, 0x03,
+ 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A,
+ 0x0B, 0x11, 0x00, 0x02, 0x01, 0x02, 0x04,
+ 0x04, 0x03, 0x04, 0x07, 0x05, 0x04, 0x04,
+ 0x00, 0x01, 0x02, 0x77, 0x00, 0x01, 0x02,
+ 0x03, 0x11, 0x04, 0x05, 0x21, 0x31, 0x06,
+ 0x12, 0x41, 0x51, 0x07, 0x61, 0x71, 0x13,
+ 0x22, 0x32, 0x81, 0x08, 0x14, 0x42, 0x91,
+ 0xA1, 0xB1, 0xC1, 0x09, 0x23, 0x33, 0x52,
+ 0xF0, 0x15, 0x62, 0x72, 0xD1, 0x0A, 0x16,
+ 0x24, 0x34, 0xE1, 0x25, 0xF1, 0x17, 0x18,
+ 0x19, 0x1A, 0x26, 0x27, 0x28, 0x29, 0x2A,
+ 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x43,
+ 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4A,
+ 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59,
+ 0x5A, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68,
+ 0x69, 0x6A, 0x73, 0x74, 0x75, 0x76, 0x77,
+ 0x78, 0x79, 0x7A, 0x82, 0x83, 0x84, 0x85,
+ 0x86, 0x87, 0x88, 0x89, 0x8A, 0x92, 0x93,
+ 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9A,
+ 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7, 0xA8,
+ 0xA9, 0xAA, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6,
+ 0xB7, 0xB8, 0xB9, 0xBA, 0xC2, 0xC3, 0xC4,
+ 0xC5, 0xC6, 0xC7, 0xC8, 0xC9, 0xCA, 0xD2,
+ 0xD3, 0xD4, 0xD5, 0xD6, 0xD7, 0xD8, 0xD9,
+ 0xDA, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7,
+ 0xE8, 0xE9, 0xEA, 0xF2, 0xF3, 0xF4, 0xF5,
+ 0xF6, 0xF7, 0xF8, 0xF9, 0xFA
+};
+
+static const unsigned char jpeg_dri[] = {
+ 0xFF, 0xDD,
+ 0x00, 0x04, 0x00, 0x20
+};
+
+static const unsigned char jpeg_sos_maximal[] = {
+ 0xFF, 0xDA,
+ 0x00, 0x0C, 0x04, 0x01, 0x00, 0x02, 0x11, 0x03,
+ 0x11, 0x04, 0x11, 0x00, 0x3F, 0x00
+};
+
+static const unsigned char jpeg_eoi[] = {
+ 0xFF, 0xD9
+};
+
+struct mxc_jpeg_src_buf {
+ /* common v4l buffer stuff -- must be first */
+ struct vb2_v4l2_buffer b;
+ struct list_head list;
+
+ /* mxc-jpeg specific */
+ bool dht_needed;
+ bool jpeg_parse_error;
+};
+
+static inline struct mxc_jpeg_src_buf *vb2_to_mxc_buf(struct vb2_buffer *vb)
+{
+ return container_of(to_vb2_v4l2_buffer(vb),
+ struct mxc_jpeg_src_buf, b);
+}
+
+static unsigned int debug;
+module_param(debug, int, 0644);
+MODULE_PARM_DESC(debug, "Debug level (0-3)");
+
+static void _bswap16(u16 *a)
+{
+ *a = ((*a & 0x00FF) << 8) | ((*a & 0xFF00) >> 8);
+}
+
+static void print_mxc_buf(struct mxc_jpeg_dev *jpeg, struct vb2_buffer *buf,
+ unsigned long len)
+{
+ unsigned int plane_no;
+ u32 dma_addr;
+ void *vaddr;
+ unsigned long payload;
+
+ if (debug < 3)
+ return;
+
+ for (plane_no = 0; plane_no < buf->num_planes; plane_no++) {
+ payload = vb2_get_plane_payload(buf, plane_no);
+ if (len == 0)
+ len = payload;
+ dma_addr = vb2_dma_contig_plane_dma_addr(buf, plane_no);
+ vaddr = vb2_plane_vaddr(buf, plane_no);
+ v4l2_dbg(3, debug, &jpeg->v4l2_dev,
+ "plane %d (vaddr=%p dma_addr=%x payload=%ld):",
+ plane_no, vaddr, dma_addr, payload);
+ print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 32, 1,
+ vaddr, len, false);
+ }
+}
+
+static inline struct mxc_jpeg_ctx *mxc_jpeg_fh_to_ctx(struct v4l2_fh *fh)
+{
+ return container_of(fh, struct mxc_jpeg_ctx, fh);
+}
+
+static int enum_fmt(struct mxc_jpeg_fmt *mxc_formats, int n,
+ struct v4l2_fmtdesc *f, u32 type)
+{
+ int i, num = 0;
+
+ for (i = 0; i < n; ++i) {
+ if (mxc_formats[i].flags == type) {
+ /* index-th format of searched type found ? */
+ if (num == f->index)
+ break;
+ /* Correct type but haven't reached our index yet,
+ * just increment per-type index
+ */
+ ++num;
+ }
+ }
+
+ /* Format not found */
+ if (i >= n)
+ return -EINVAL;
+
+ strscpy(f->description, mxc_formats[i].name, sizeof(f->description));
+ f->pixelformat = mxc_formats[i].fourcc;
+
+ return 0;
+}
+
+static struct mxc_jpeg_fmt *mxc_jpeg_find_format(struct mxc_jpeg_ctx *ctx,
+ u32 pixelformat)
+{
+ unsigned int k;
+
+ for (k = 0; k < MXC_JPEG_NUM_FORMATS; k++) {
+ struct mxc_jpeg_fmt *fmt = &mxc_formats[k];
+
+ if (fmt->fourcc == pixelformat)
+ return fmt;
+ }
+ return NULL;
+}
+
+static enum mxc_jpeg_image_format mxc_jpeg_fourcc_to_imgfmt(u32 fourcc)
+{
+ switch (fourcc) {
+ case V4L2_PIX_FMT_GREY:
+ return MXC_JPEG_GRAY;
+ case V4L2_PIX_FMT_YUYV:
+ return MXC_JPEG_YUV422;
+ case V4L2_PIX_FMT_NV12:
+ return MXC_JPEG_YUV420;
+ case V4L2_PIX_FMT_YUV24:
+ return MXC_JPEG_YUV444;
+ case V4L2_PIX_FMT_RGB24:
+ return MXC_JPEG_RGB;
+ case V4L2_PIX_FMT_ARGB32:
+ return MXC_JPEG_ARGB;
+ default:
+ return MXC_JPEG_INVALID;
+ }
+}
+
+static struct mxc_jpeg_q_data *mxc_jpeg_get_q_data(struct mxc_jpeg_ctx *ctx,
+ enum v4l2_buf_type type)
+{
+ if (V4L2_TYPE_IS_OUTPUT(type))
+ return &ctx->out_q;
+ return &ctx->cap_q;
+}
+
+static void mxc_jpeg_addrs(struct mxc_jpeg_desc *desc,
+ struct vb2_buffer *raw_buf,
+ struct vb2_buffer *jpeg_buf, int offset)
+{
+ int img_fmt = desc->stm_ctrl & STM_CTRL_IMAGE_FORMAT_MASK;
+
+ desc->buf_base0 = vb2_dma_contig_plane_dma_addr(raw_buf, 0);
+ desc->buf_base1 = 0;
+ if (img_fmt == STM_CTRL_IMAGE_FORMAT(MXC_JPEG_YUV420)) {
+ WARN_ON(raw_buf->num_planes < 2);
+ desc->buf_base1 = vb2_dma_contig_plane_dma_addr(raw_buf, 1);
+ }
+ desc->stm_bufbase = vb2_dma_contig_plane_dma_addr(jpeg_buf, 0) +
+ offset;
+}
+
+static void notify_eos(struct mxc_jpeg_ctx *ctx)
+{
+ const struct v4l2_event ev = {
+ .type = V4L2_EVENT_EOS
+ };
+
+ dev_dbg(ctx->mxc_jpeg->dev, "Notify app event EOS reached");
+ v4l2_event_queue_fh(&ctx->fh, &ev);
+}
+
+static void notify_src_chg(struct mxc_jpeg_ctx *ctx)
+{
+ const struct v4l2_event ev = {
+ .type = V4L2_EVENT_SOURCE_CHANGE,
+ .u.src_change.changes =
+ V4L2_EVENT_SRC_CH_RESOLUTION,
+ };
+
+ dev_dbg(ctx->mxc_jpeg->dev, "Notify app event SRC_CH_RESOLUTION");
+ v4l2_event_queue_fh(&ctx->fh, &ev);
+}
+
+static int mxc_get_free_slot(struct mxc_jpeg_slot_data slot_data[], int n)
+{
+ int free_slot = 0;
+
+ while (slot_data[free_slot].used && free_slot < n)
+ free_slot++;
+
+ return free_slot; /* >=n when there are no more free slots */
+}
+
+static bool mxc_jpeg_alloc_slot_data(struct mxc_jpeg_dev *jpeg,
+ unsigned int slot)
+{
+ struct mxc_jpeg_desc *desc;
+ struct mxc_jpeg_desc *cfg_desc;
+ void *cfg_stm;
+
+ if (jpeg->slot_data[slot].desc)
+ goto skip_alloc; /* already allocated, reuse it */
+
+ /* allocate descriptor for decoding/encoding phase */
+ desc = dma_alloc_coherent(jpeg->dev,
+ sizeof(struct mxc_jpeg_desc),
+ &jpeg->slot_data[slot].desc_handle,
+ GFP_ATOMIC);
+ if (!desc)
+ goto err;
+ jpeg->slot_data[slot].desc = desc;
+
+ /* allocate descriptor for configuration phase (encoder only) */
+ cfg_desc = dma_alloc_coherent(jpeg->dev,
+ sizeof(struct mxc_jpeg_desc),
+ &jpeg->slot_data[slot].cfg_desc_handle,
+ GFP_ATOMIC);
+ if (!cfg_desc)
+ goto err;
+ jpeg->slot_data[slot].cfg_desc = cfg_desc;
+
+ /* allocate configuration stream */
+ cfg_stm = dma_alloc_coherent(jpeg->dev,
+ MXC_JPEG_MAX_CFG_STREAM,
+ &jpeg->slot_data[slot].cfg_stream_handle,
+ GFP_ATOMIC);
+ if (!cfg_stm)
+ goto err;
+ jpeg->slot_data[slot].cfg_stream_vaddr = cfg_stm;
+
+skip_alloc:
+ jpeg->slot_data[slot].used = true;
+
+ return true;
+err:
+ dev_err(jpeg->dev, "Could not allocate descriptors for slot %d", slot);
+
+ return false;
+}
+
+static void mxc_jpeg_free_slot_data(struct mxc_jpeg_dev *jpeg,
+ unsigned int slot)
+{
+ if (slot >= MXC_MAX_SLOTS) {
+ dev_err(jpeg->dev, "Invalid slot %d, nothing to free.", slot);
+ return;
+ }
+
+ /* free descriptor for decoding/encoding phase */
+ dma_free_coherent(jpeg->dev, sizeof(struct mxc_jpeg_desc),
+ jpeg->slot_data[slot].desc,
+ jpeg->slot_data[slot].desc_handle);
+
+ /* free descriptor for encoder configuration phase / decoder DHT */
+ dma_free_coherent(jpeg->dev, sizeof(struct mxc_jpeg_desc),
+ jpeg->slot_data[slot].cfg_desc,
+ jpeg->slot_data[slot].cfg_desc_handle);
+
+ /* free configuration stream */
+ dma_free_coherent(jpeg->dev, MXC_JPEG_MAX_CFG_STREAM,
+ jpeg->slot_data[slot].cfg_stream_vaddr,
+ jpeg->slot_data[slot].cfg_stream_handle);
+
+ jpeg->slot_data[slot].used = false;
+}
+
+static irqreturn_t mxc_jpeg_dec_irq(int irq, void *priv)
+{
+ struct mxc_jpeg_dev *jpeg = priv;
+ struct mxc_jpeg_ctx *ctx;
+ void __iomem *reg = jpeg->base_reg;
+ struct device *dev = jpeg->dev;
+ struct vb2_v4l2_buffer *src_buf, *dst_buf;
+ struct mxc_jpeg_src_buf *jpeg_src_buf;
+ enum vb2_buffer_state buf_state;
+ u32 dec_ret, com_status;
+ unsigned long payload;
+ struct mxc_jpeg_q_data *q_data;
+ enum v4l2_buf_type cap_type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
+ unsigned int slot;
+
+ spin_lock(&jpeg->hw_lock);
+
+ com_status = readl(reg + COM_STATUS);
+ slot = COM_STATUS_CUR_SLOT(com_status);
+ dev_dbg(dev, "Irq %d on slot %d.\n", irq, slot);
+
+ ctx = v4l2_m2m_get_curr_priv(jpeg->m2m_dev);
+ if (!ctx) {
+ dev_err(dev,
+ "Instance released before the end of transaction.\n");
+ /* soft reset only resets internal state, not registers */
+ mxc_jpeg_sw_reset(reg);
+ /* clear all interrupts */
+ writel(0xFFFFFFFF, reg + MXC_SLOT_OFFSET(slot, SLOT_STATUS));
+ goto job_unlock;
+ }
+
+ if (slot != ctx->slot) {
+ /* TODO investigate when adding multi-instance support */
+ dev_warn(dev, "IRQ slot %d != context slot %d.\n",
+ slot, ctx->slot);
+ goto job_unlock;
+ }
+
+ dec_ret = readl(reg + MXC_SLOT_OFFSET(slot, SLOT_STATUS));
+ writel(dec_ret, reg + MXC_SLOT_OFFSET(slot, SLOT_STATUS)); /* w1c */
+
+ dst_buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
+ src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
+ jpeg_src_buf = vb2_to_mxc_buf(&src_buf->vb2_buf);
+
+ if (dec_ret & SLOT_STATUS_ENC_CONFIG_ERR) {
+ u32 ret = readl(reg + CAST_STATUS12);
+
+ dev_err(dev, "Encoder/decoder error, status=0x%08x", ret);
+ mxc_jpeg_sw_reset(reg);
+ buf_state = VB2_BUF_STATE_ERROR;
+ goto buffers_done;
+ }
+
+ if (!(dec_ret & SLOT_STATUS_FRMDONE))
+ goto job_unlock;
+
+ if (jpeg->mode == MXC_JPEG_ENCODE &&
+ ctx->enc_state == MXC_JPEG_ENC_CONF) {
+ ctx->enc_state = MXC_JPEG_ENCODING;
+ dev_dbg(dev, "Encoder config finished. Start encoding...\n");
+ mxc_jpeg_enc_mode_go(dev, reg);
+ goto job_unlock;
+ }
+ if (jpeg->mode == MXC_JPEG_DECODE && jpeg_src_buf->dht_needed) {
+ jpeg_src_buf->dht_needed = false;
+ dev_dbg(dev, "Decoder DHT cfg finished. Start decoding...\n");
+ goto job_unlock;
+ }
+ if (jpeg->mode == MXC_JPEG_ENCODE) {
+ payload = readl(reg + MXC_SLOT_OFFSET(slot, SLOT_BUF_PTR));
+ vb2_set_plane_payload(&dst_buf->vb2_buf, 0, payload);
+ dev_dbg(dev, "Encoding finished, payload size: %ld\n",
+ payload);
+ } else {
+ q_data = mxc_jpeg_get_q_data(ctx, cap_type);
+ payload = q_data->sizeimage[0];
+ vb2_set_plane_payload(&dst_buf->vb2_buf, 0, payload);
+ vb2_set_plane_payload(&dst_buf->vb2_buf, 1, 0);
+ if (q_data->fmt->colplanes == 2) {
+ payload = q_data->sizeimage[1];
+ vb2_set_plane_payload(&dst_buf->vb2_buf, 1, payload);
+ }
+ dev_dbg(dev, "Decoding finished, payload size: %ld + %ld\n",
+ vb2_get_plane_payload(&dst_buf->vb2_buf, 0),
+ vb2_get_plane_payload(&dst_buf->vb2_buf, 1));
+ }
+
+ /* short preview of the results */
+ dev_dbg(dev, "src_buf preview: ");
+ print_mxc_buf(jpeg, &src_buf->vb2_buf, 32);
+ dev_dbg(dev, "dst_buf preview: ");
+ print_mxc_buf(jpeg, &dst_buf->vb2_buf, 32);
+ buf_state = VB2_BUF_STATE_DONE;
+
+buffers_done:
+ jpeg->slot_data[slot].used = false; /* unused, but don't free */
+ v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
+ v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
+ v4l2_m2m_buf_done(src_buf, buf_state);
+ v4l2_m2m_buf_done(dst_buf, buf_state);
+ spin_unlock(&jpeg->hw_lock);
+ v4l2_m2m_job_finish(jpeg->m2m_dev, ctx->fh.m2m_ctx);
+ return IRQ_HANDLED;
+job_unlock:
+ spin_unlock(&jpeg->hw_lock);
+ return IRQ_HANDLED;
+}
+
+static int mxc_jpeg_fixup_sof(struct mxc_jpeg_sof *sof,
+ u32 fourcc,
+ u16 w, u16 h)
+{
+ int sof_length;
+
+ sof->precision = 8; /* TODO allow 8/12 bit precision*/
+ sof->height = h;
+ _bswap16(&sof->height);
+ sof->width = w;
+ _bswap16(&sof->width);
+
+ switch (fourcc) {
+ case V4L2_PIX_FMT_NV12:
+ sof->components_no = 3;
+ sof->comp[0].v = 0x2;
+ sof->comp[0].h = 0x2;
+ break;
+ case V4L2_PIX_FMT_YUYV:
+ sof->components_no = 3;
+ sof->comp[0].v = 0x1;
+ sof->comp[0].h = 0x2;
+ break;
+ case V4L2_PIX_FMT_YUV24:
+ case V4L2_PIX_FMT_RGB24:
+ default:
+ sof->components_no = 3;
+ break;
+ case V4L2_PIX_FMT_ARGB32:
+ sof->components_no = 4;
+ break;
+ case V4L2_PIX_FMT_GREY:
+ sof->components_no = 1;
+ break;
+ }
+ sof_length = 8 + 3 * sof->components_no;
+ sof->length = sof_length;
+ _bswap16(&sof->length);
+
+ return sof_length; /* not swaped */
+}
+
+static int mxc_jpeg_fixup_sos(struct mxc_jpeg_sos *sos,
+ u32 fourcc)
+{
+ int sos_length;
+ u8 *sof_u8 = (u8 *)sos;
+
+ switch (fourcc) {
+ case V4L2_PIX_FMT_NV12:
+ sos->components_no = 3;
+ break;
+ case V4L2_PIX_FMT_YUYV:
+ sos->components_no = 3;
+ break;
+ case V4L2_PIX_FMT_YUV24:
+ case V4L2_PIX_FMT_RGB24:
+ default:
+ sos->components_no = 3;
+ break;
+ case V4L2_PIX_FMT_ARGB32:
+ sos->components_no = 4;
+ break;
+ case V4L2_PIX_FMT_GREY:
+ sos->components_no = 1;
+ break;
+ }
+ sos_length = 6 + 2 * sos->components_no;
+ sos->length = sos_length;
+ _bswap16(&sos->length);
+
+ /* SOS ignorable bytes, not so ignorable after all */
+ sof_u8[sos_length - 1] = 0x0;
+ sof_u8[sos_length - 2] = 0x3f;
+ sof_u8[sos_length - 3] = 0x0;
+
+ return sos_length; /* not swaped */
+}
+
+static unsigned int mxc_jpeg_setup_cfg_stream(void *cfg_stream_vaddr,
+ u32 fourcc,
+ u16 w, u16 h)
+{
+ unsigned int offset = 0;
+ u8 *cfg = (u8 *)cfg_stream_vaddr;
+ struct mxc_jpeg_sof *sof;
+ struct mxc_jpeg_sos *sos;
+
+ memcpy(cfg + offset, jpeg_soi, ARRAY_SIZE(jpeg_soi));
+ offset += ARRAY_SIZE(jpeg_soi);
+
+ if (fourcc == V4L2_PIX_FMT_RGB24 ||
+ fourcc == V4L2_PIX_FMT_ARGB32) {
+ memcpy(cfg + offset, jpeg_app14, sizeof(jpeg_app14));
+ offset += sizeof(jpeg_app14);
+ } else {
+ memcpy(cfg + offset, jpeg_app0, sizeof(jpeg_app0));
+ offset += sizeof(jpeg_app0);
+ }
+
+ memcpy(cfg + offset, jpeg_dqt, sizeof(jpeg_dqt));
+ offset += sizeof(jpeg_dqt);
+
+ memcpy(cfg + offset, jpeg_sof_maximal, sizeof(jpeg_sof_maximal));
+ offset += 2; /* skip marker ID */
+ sof = (struct mxc_jpeg_sof *)(cfg + offset);
+ offset += mxc_jpeg_fixup_sof(sof, fourcc, w, h);
+
+ memcpy(cfg + offset, jpeg_dht, sizeof(jpeg_dht));
+ offset += sizeof(jpeg_dht);
+
+ memcpy(cfg + offset, jpeg_dri, sizeof(jpeg_dri));
+ offset += sizeof(jpeg_dri);
+
+ memcpy(cfg + offset, jpeg_sos_maximal, sizeof(jpeg_sos_maximal));
+ offset += 2; /* skip marker ID */
+ sos = (struct mxc_jpeg_sos *)(cfg + offset);
+ offset += mxc_jpeg_fixup_sos(sos, fourcc);
+
+ memcpy(cfg + offset, jpeg_eoi, sizeof(jpeg_eoi));
+ offset += sizeof(jpeg_eoi);
+
+ return offset;
+}
+
+static void mxc_jpeg_config_dec_desc(struct vb2_buffer *out_buf,
+ struct mxc_jpeg_ctx *ctx,
+ struct vb2_buffer *src_buf,
+ struct vb2_buffer *dst_buf)
+{
+ enum v4l2_buf_type cap_type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
+ struct mxc_jpeg_q_data *q_data_cap;
+ enum mxc_jpeg_image_format img_fmt;
+ struct mxc_jpeg_dev *jpeg = ctx->mxc_jpeg;
+ void __iomem *reg = jpeg->base_reg;
+ unsigned int slot = ctx->slot;
+ struct mxc_jpeg_desc *desc = jpeg->slot_data[slot].desc;
+ struct mxc_jpeg_desc *cfg_desc = jpeg->slot_data[slot].cfg_desc;
+ dma_addr_t desc_handle = jpeg->slot_data[slot].desc_handle;
+ dma_addr_t cfg_desc_handle = jpeg->slot_data[slot].cfg_desc_handle;
+ dma_addr_t cfg_stream_handle = jpeg->slot_data[slot].cfg_stream_handle;
+ unsigned int *cfg_size = &jpeg->slot_data[slot].cfg_stream_size;
+ void *cfg_stream_vaddr = jpeg->slot_data[slot].cfg_stream_vaddr;
+ struct mxc_jpeg_src_buf *jpeg_src_buf;
+
+ jpeg_src_buf = vb2_to_mxc_buf(src_buf);
+
+ /* setup the decoding descriptor */
+ desc->next_descpt_ptr = 0; /* end of chain */
+ q_data_cap = mxc_jpeg_get_q_data(ctx, cap_type);
+ desc->imgsize = q_data_cap->w_adjusted << 16 | q_data_cap->h_adjusted;
+ img_fmt = mxc_jpeg_fourcc_to_imgfmt(q_data_cap->fmt->fourcc);
+ desc->stm_ctrl &= ~STM_CTRL_IMAGE_FORMAT(0xF); /* clear image format */
+ desc->stm_ctrl |= STM_CTRL_IMAGE_FORMAT(img_fmt);
+ desc->line_pitch = q_data_cap->bytesperline[0];
+ mxc_jpeg_addrs(desc, dst_buf, src_buf, 0);
+ mxc_jpeg_set_bufsize(desc, ALIGN(vb2_plane_size(src_buf, 0), 1024));
+ print_descriptor_info(jpeg->dev, desc);
+
+ if (!jpeg_src_buf->dht_needed) {
+ /* validate the decoding descriptor */
+ mxc_jpeg_set_desc(desc_handle, reg, slot);
+ return;
+ }
+
+ /*
+ * if a default huffman table is needed, use the config descriptor to
+ * inject a DHT, by chaining it before the decoding descriptor
+ */
+ *cfg_size = mxc_jpeg_setup_cfg_stream(cfg_stream_vaddr,
+ V4L2_PIX_FMT_YUYV,
+ MXC_JPEG_MIN_WIDTH,
+ MXC_JPEG_MIN_HEIGHT);
+ cfg_desc->next_descpt_ptr = desc_handle | MXC_NXT_DESCPT_EN;
+ cfg_desc->buf_base0 = vb2_dma_contig_plane_dma_addr(dst_buf, 0);
+ cfg_desc->buf_base1 = 0;
+ cfg_desc->imgsize = MXC_JPEG_MIN_WIDTH << 16;
+ cfg_desc->imgsize |= MXC_JPEG_MIN_HEIGHT;
+ cfg_desc->line_pitch = MXC_JPEG_MIN_WIDTH * 2;
+ cfg_desc->stm_ctrl = STM_CTRL_IMAGE_FORMAT(MXC_JPEG_YUV422);
+ cfg_desc->stm_bufbase = cfg_stream_handle;
+ cfg_desc->stm_bufsize = ALIGN(*cfg_size, 1024);
+ print_descriptor_info(jpeg->dev, cfg_desc);
+
+ /* validate the configuration descriptor */
+ mxc_jpeg_set_desc(cfg_desc_handle, reg, slot);
+}
+
+static void mxc_jpeg_config_enc_desc(struct vb2_buffer *out_buf,
+ struct mxc_jpeg_ctx *ctx,
+ struct vb2_buffer *src_buf,
+ struct vb2_buffer *dst_buf)
+{
+ struct mxc_jpeg_dev *jpeg = ctx->mxc_jpeg;
+ void __iomem *reg = jpeg->base_reg;
+ unsigned int slot = ctx->slot;
+ struct mxc_jpeg_desc *desc = jpeg->slot_data[slot].desc;
+ struct mxc_jpeg_desc *cfg_desc = jpeg->slot_data[slot].cfg_desc;
+ dma_addr_t desc_handle = jpeg->slot_data[slot].desc_handle;
+ dma_addr_t cfg_desc_handle = jpeg->slot_data[slot].cfg_desc_handle;
+ void *cfg_stream_vaddr = jpeg->slot_data[slot].cfg_stream_vaddr;
+ struct mxc_jpeg_q_data *q_data;
+ enum mxc_jpeg_image_format img_fmt;
+ int w, h;
+
+ q_data = mxc_jpeg_get_q_data(ctx, src_buf->vb2_queue->type);
+
+ jpeg->slot_data[slot].cfg_stream_size =
+ mxc_jpeg_setup_cfg_stream(cfg_stream_vaddr,
+ q_data->fmt->fourcc,
+ q_data->w_adjusted,
+ q_data->h_adjusted);
+
+ /* chain the config descriptor with the encoding descriptor */
+ cfg_desc->next_descpt_ptr = desc_handle | MXC_NXT_DESCPT_EN;
+
+ cfg_desc->buf_base0 = jpeg->slot_data[slot].cfg_stream_handle;
+ cfg_desc->buf_base1 = 0;
+ cfg_desc->line_pitch = 0;
+ cfg_desc->stm_bufbase = 0; /* no output expected */
+ cfg_desc->stm_bufsize = 0x0;
+ cfg_desc->imgsize = 0;
+ cfg_desc->stm_ctrl = STM_CTRL_CONFIG_MOD(1);
+
+ desc->next_descpt_ptr = 0; /* end of chain */
+
+ /* use adjusted resolution for CAST IP job */
+ w = q_data->w_adjusted;
+ h = q_data->h_adjusted;
+ mxc_jpeg_set_res(desc, w, h);
+ mxc_jpeg_set_line_pitch(desc, w * (q_data->fmt->depth / 8));
+ mxc_jpeg_set_bufsize(desc, desc->line_pitch * h);
+ img_fmt = mxc_jpeg_fourcc_to_imgfmt(q_data->fmt->fourcc);
+ if (img_fmt == MXC_JPEG_INVALID)
+ dev_err(jpeg->dev, "No valid image format detected\n");
+ desc->stm_ctrl = STM_CTRL_CONFIG_MOD(0) |
+ STM_CTRL_IMAGE_FORMAT(img_fmt);
+ mxc_jpeg_addrs(desc, src_buf, dst_buf, 0);
+ dev_dbg(jpeg->dev, "cfg_desc:\n");
+ print_descriptor_info(jpeg->dev, cfg_desc);
+ dev_dbg(jpeg->dev, "enc desc:\n");
+ print_descriptor_info(jpeg->dev, desc);
+ print_wrapper_info(jpeg->dev, reg);
+ print_cast_status(jpeg->dev, reg, MXC_JPEG_ENCODE);
+
+ /* validate the configuration descriptor */
+ mxc_jpeg_set_desc(cfg_desc_handle, reg, slot);
+}
+
+static void mxc_jpeg_device_run(void *priv)
+{
+ struct mxc_jpeg_ctx *ctx = priv;
+ struct mxc_jpeg_dev *jpeg = ctx->mxc_jpeg;
+ void __iomem *reg = jpeg->base_reg;
+ struct device *dev = jpeg->dev;
+ struct vb2_v4l2_buffer *src_buf, *dst_buf;
+ unsigned long flags;
+ struct mxc_jpeg_q_data *q_data_cap, *q_data_out;
+ struct mxc_jpeg_src_buf *jpeg_src_buf;
+
+ spin_lock_irqsave(&ctx->mxc_jpeg->hw_lock, flags);
+ src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
+ dst_buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
+ if (!src_buf || !dst_buf) {
+ dev_err(dev, "Null src or dst buf\n");
+ goto end;
+ }
+
+ q_data_cap = mxc_jpeg_get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
+ if (!q_data_cap)
+ goto end;
+ q_data_out = mxc_jpeg_get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
+ if (!q_data_out)
+ goto end;
+ src_buf->sequence = q_data_out->sequence++;
+ dst_buf->sequence = q_data_cap->sequence++;
+
+ v4l2_m2m_buf_copy_metadata(src_buf, dst_buf, true);
+
+ jpeg_src_buf = vb2_to_mxc_buf(&src_buf->vb2_buf);
+ if (jpeg_src_buf->jpeg_parse_error) {
+ jpeg->slot_data[ctx->slot].used = false;
+ v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
+ v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
+ v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_ERROR);
+ v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_ERROR);
+ spin_unlock_irqrestore(&ctx->mxc_jpeg->hw_lock, flags);
+ v4l2_m2m_job_finish(jpeg->m2m_dev, ctx->fh.m2m_ctx);
+
+ return;
+ }
+
+ /*
+ * TODO: this reset should be removed, once we figure out
+ * how to overcome hardware issues both on encoder and decoder
+ */
+ mxc_jpeg_sw_reset(reg);
+ mxc_jpeg_enable(reg);
+ mxc_jpeg_set_l_endian(reg, 1);
+
+ ctx->slot = mxc_get_free_slot(jpeg->slot_data, MXC_MAX_SLOTS);
+ if (ctx->slot >= MXC_MAX_SLOTS) {
+ dev_err(dev, "No more free slots\n");
+ goto end;
+ }
+ if (!mxc_jpeg_alloc_slot_data(jpeg, ctx->slot)) {
+ dev_err(dev, "Canot allocate slot data\n");
+ goto end;
+ }
+
+ mxc_jpeg_enable_slot(reg, ctx->slot);
+ mxc_jpeg_enable_irq(reg, ctx->slot);
+
+ if (jpeg->mode == MXC_JPEG_ENCODE) {
+ dev_dbg(dev, "Encoding on slot %d\n", ctx->slot);
+ ctx->enc_state = MXC_JPEG_ENC_CONF;
+ mxc_jpeg_config_enc_desc(&dst_buf->vb2_buf, ctx,
+ &src_buf->vb2_buf, &dst_buf->vb2_buf);
+ mxc_jpeg_enc_mode_conf(dev, reg); /* start config phase */
+ } else {
+ dev_dbg(dev, "Decoding on slot %d\n", ctx->slot);
+ print_mxc_buf(jpeg, &src_buf->vb2_buf, 0);
+ mxc_jpeg_config_dec_desc(&dst_buf->vb2_buf, ctx,
+ &src_buf->vb2_buf, &dst_buf->vb2_buf);
+ mxc_jpeg_dec_mode_go(dev, reg);
+ }
+end:
+ spin_unlock_irqrestore(&ctx->mxc_jpeg->hw_lock, flags);
+}
+
+static int mxc_jpeg_decoder_cmd(struct file *file, void *priv,
+ struct v4l2_decoder_cmd *cmd)
+{
+ struct v4l2_fh *fh = file->private_data;
+ struct mxc_jpeg_ctx *ctx = mxc_jpeg_fh_to_ctx(fh);
+ struct device *dev = ctx->mxc_jpeg->dev;
+ int ret;
+
+ ret = v4l2_m2m_ioctl_try_decoder_cmd(file, fh, cmd);
+ if (ret < 0)
+ return ret;
+
+ if (cmd->cmd == V4L2_DEC_CMD_STOP) {
+ dev_dbg(dev, "Received V4L2_DEC_CMD_STOP");
+ if (v4l2_m2m_num_src_bufs_ready(fh->m2m_ctx) == 0) {
+ /* No more src bufs, notify app EOS */
+ notify_eos(ctx);
+ } else {
+ /* will send EOS later*/
+ ctx->stopping = 1;
+ }
+ }
+
+ return 0;
+}
+
+static int mxc_jpeg_encoder_cmd(struct file *file, void *priv,
+ struct v4l2_encoder_cmd *cmd)
+{
+ struct v4l2_fh *fh = file->private_data;
+ struct mxc_jpeg_ctx *ctx = mxc_jpeg_fh_to_ctx(fh);
+ struct device *dev = ctx->mxc_jpeg->dev;
+ int ret;
+
+ ret = v4l2_m2m_ioctl_try_encoder_cmd(file, fh, cmd);
+ if (ret < 0)
+ return ret;
+
+ if (cmd->cmd == V4L2_ENC_CMD_STOP) {
+ dev_dbg(dev, "Received V4L2_ENC_CMD_STOP");
+ if (v4l2_m2m_num_src_bufs_ready(fh->m2m_ctx) == 0) {
+ /* No more src bufs, notify app EOS */
+ notify_eos(ctx);
+ } else {
+ /* will send EOS later*/
+ ctx->stopping = 1;
+ }
+ }
+
+ return 0;
+}
+
+static int mxc_jpeg_queue_setup(struct vb2_queue *q,
+ unsigned int *nbuffers,
+ unsigned int *nplanes,
+ unsigned int sizes[],
+ struct device *alloc_ctxs[])
+{
+ struct mxc_jpeg_ctx *ctx = vb2_get_drv_priv(q);
+ struct mxc_jpeg_q_data *q_data = NULL;
+ int i;
+
+ q_data = mxc_jpeg_get_q_data(ctx, q->type);
+ if (!q_data)
+ return -EINVAL;
+
+ /* Handle CREATE_BUFS situation - *nplanes != 0 */
+ if (*nplanes) {
+ for (i = 0; i < *nplanes; i++) {
+ if (sizes[i] < q_data->sizeimage[i])
+ return -EINVAL;
+ }
+ return 0;
+ }
+
+ /* Handle REQBUFS situation */
+ *nplanes = q_data->fmt->colplanes;
+ for (i = 0; i < *nplanes; i++)
+ sizes[i] = q_data->sizeimage[i];
+
+ return 0;
+}
+
+static int mxc_jpeg_start_streaming(struct vb2_queue *q, unsigned int count)
+{
+ struct mxc_jpeg_ctx *ctx = vb2_get_drv_priv(q);
+ struct mxc_jpeg_q_data *q_data = mxc_jpeg_get_q_data(ctx, q->type);
+
+ dev_dbg(ctx->mxc_jpeg->dev, "Start streaming ctx=%p", ctx);
+ q_data->sequence = 0;
+
+ return 0;
+}
+
+static void mxc_jpeg_stop_streaming(struct vb2_queue *q)
+{
+ struct mxc_jpeg_ctx *ctx = vb2_get_drv_priv(q);
+ struct vb2_v4l2_buffer *vbuf;
+
+ dev_dbg(ctx->mxc_jpeg->dev, "Stop streaming ctx=%p", ctx);
+
+ /* Release all active buffers */
+ for (;;) {
+ if (V4L2_TYPE_IS_OUTPUT(q->type))
+ vbuf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
+ else
+ vbuf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
+ if (!vbuf)
+ return;
+ v4l2_m2m_buf_done(vbuf, VB2_BUF_STATE_ERROR);
+ }
+}
+
+static int mxc_jpeg_valid_comp_id(struct device *dev,
+ struct mxc_jpeg_sof *sof,
+ struct mxc_jpeg_sos *sos)
+{
+ int valid = 1;
+ int i;
+
+ /*
+ * there's a limitation in the IP that the component IDs must be
+ * between 0..4, if they are not, let's patch them
+ */
+ for (i = 0; i < sof->components_no; i++)
+ if (sof->comp[i].id > MXC_JPEG_MAX_COMPONENTS) {
+ valid = 0;
+ dev_err(dev, "Component %d has invalid ID: %d",
+ i, sof->comp[i].id);
+ }
+ if (!valid)
+ /* patch all comp IDs if at least one is invalid */
+ for (i = 0; i < sof->components_no; i++) {
+ dev_warn(dev, "Component %d ID patched to: %d",
+ i, i + 1);
+ sof->comp[i].id = i + 1;
+ sos->comp[i].id = i + 1;
+ }
+
+ return valid;
+}
+
+static u32 mxc_jpeg_get_image_format(struct device *dev,
+ const struct v4l2_jpeg_header header)
+{
+ int i;
+ u32 fourcc = 0;
+
+ for (i = 0; i < MXC_JPEG_NUM_FORMATS; i++)
+ if (mxc_formats[i].subsampling == header.frame.subsampling &&
+ mxc_formats[i].nc == header.frame.num_components) {
+ fourcc = mxc_formats[i].fourcc;
+ break;
+ }
+ if (fourcc == 0) {
+ dev_err(dev, "Could not identify image format nc=%d, subsampling=%d\n",
+ header.frame.num_components,
+ header.frame.subsampling);
+ return fourcc;
+ }
+ /*
+ * If the transform flag from APP14 marker is 0, images that are
+ * encoded with 3 components have RGB colorspace, see Recommendation
+ * ITU-T T.872 chapter 6.5.3 APP14 marker segment for colour encoding
+ */
+ if (fourcc == V4L2_PIX_FMT_YUV24 || fourcc == V4L2_PIX_FMT_RGB24) {
+ if (header.app14_tf == V4L2_JPEG_APP14_TF_CMYK_RGB)
+ fourcc = V4L2_PIX_FMT_RGB24;
+ else
+ fourcc = V4L2_PIX_FMT_YUV24;
+ }
+
+ return fourcc;
+}
+
+static void mxc_jpeg_bytesperline(struct mxc_jpeg_q_data *q,
+ u32 precision)
+{
+ /* Bytes distance between the leftmost pixels in two adjacent lines */
+ if (q->fmt->fourcc == V4L2_PIX_FMT_JPEG) {
+ /* bytesperline unused for compressed formats */
+ q->bytesperline[0] = 0;
+ q->bytesperline[1] = 0;
+ } else if (q->fmt->fourcc == V4L2_PIX_FMT_NV12) {
+ /* When the image format is planar the bytesperline value
+ * applies to the first plane and is divided by the same factor
+ * as the width field for the other planes
+ */
+ q->bytesperline[0] = q->w * (precision / 8) *
+ (q->fmt->depth / 8);
+ q->bytesperline[1] = q->bytesperline[0];
+ } else {
+ /* single plane formats */
+ q->bytesperline[0] = q->w * (precision / 8) *
+ (q->fmt->depth / 8);
+ q->bytesperline[1] = 0;
+ }
+}
+
+static void mxc_jpeg_sizeimage(struct mxc_jpeg_q_data *q)
+{
+ if (q->fmt->fourcc == V4L2_PIX_FMT_JPEG) {
+ /* if no sizeimage from user, assume worst jpeg compression */
+ if (!q->sizeimage[0])
+ q->sizeimage[0] = 6 * q->w * q->h;
+ q->sizeimage[1] = 0;
+
+ if (q->sizeimage[0] > MXC_JPEG_MAX_SIZEIMAGE)
+ q->sizeimage[0] = MXC_JPEG_MAX_SIZEIMAGE;
+
+ /* jpeg stream size must be multiple of 1K */
+ q->sizeimage[0] = ALIGN(q->sizeimage[0], 1024);
+ } else {
+ q->sizeimage[0] = q->bytesperline[0] * q->h;
+ q->sizeimage[1] = 0;
+ if (q->fmt->fourcc == V4L2_PIX_FMT_NV12)
+ q->sizeimage[1] = q->sizeimage[0] / 2;
+ }
+}
+
+static int mxc_jpeg_parse(struct mxc_jpeg_ctx *ctx,
+ u8 *src_addr, u32 size, bool *dht_needed)
+{
+ struct device *dev = ctx->mxc_jpeg->dev;
+ struct mxc_jpeg_q_data *q_data_out, *q_data_cap;
+ enum v4l2_buf_type cap_type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
+ bool src_chg = false;
+ u32 fourcc;
+ struct v4l2_jpeg_header header;
+ struct mxc_jpeg_sof *psof = NULL;
+ struct mxc_jpeg_sos *psos = NULL;
+ int ret;
+
+ memset(&header, 0, sizeof(header));
+ ret = v4l2_jpeg_parse_header((void *)src_addr, size, &header);
+ if (ret < 0) {
+ dev_err(dev, "Error parsing JPEG stream markers\n");
+ return ret;
+ }
+
+ /* if DHT marker present, no need to inject default one */
+ *dht_needed = (header.num_dht == 0);
+
+ q_data_out = mxc_jpeg_get_q_data(ctx,
+ V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE);
+ if (q_data_out->w == 0 && q_data_out->h == 0) {
+ dev_warn(dev, "Invalid user resolution 0x0");
+ dev_warn(dev, "Keeping resolution from JPEG: %dx%d",
+ header.frame.width, header.frame.height);
+ q_data_out->w = header.frame.width;
+ q_data_out->h = header.frame.height;
+ } else if (header.frame.width != q_data_out->w ||
+ header.frame.height != q_data_out->h) {
+ dev_err(dev,
+ "Resolution mismatch: %dx%d (JPEG) versus %dx%d(user)",
+ header.frame.width, header.frame.height,
+ q_data_out->w, q_data_out->h);
+ return -EINVAL;
+ }
+ if (header.frame.width % 8 != 0 || header.frame.height % 8 != 0) {
+ dev_err(dev, "JPEG width or height not multiple of 8: %dx%d\n",
+ header.frame.width, header.frame.height);
+ return -EINVAL;
+ }
+ if (header.frame.width > MXC_JPEG_MAX_WIDTH ||
+ header.frame.height > MXC_JPEG_MAX_HEIGHT) {
+ dev_err(dev, "JPEG width or height should be <= 8192: %dx%d\n",
+ header.frame.width, header.frame.height);
+ return -EINVAL;
+ }
+ if (header.frame.width < MXC_JPEG_MIN_WIDTH ||
+ header.frame.height < MXC_JPEG_MIN_HEIGHT) {
+ dev_err(dev, "JPEG width or height should be > 64: %dx%d\n",
+ header.frame.width, header.frame.height);
+ return -EINVAL;
+ }
+ if (header.frame.num_components > V4L2_JPEG_MAX_COMPONENTS) {
+ dev_err(dev, "JPEG number of components should be <=%d",
+ V4L2_JPEG_MAX_COMPONENTS);
+ return -EINVAL;
+ }
+ /* check and, if necessary, patch component IDs*/
+ psof = (struct mxc_jpeg_sof *)header.sof.start;
+ psos = (struct mxc_jpeg_sos *)header.sos.start;
+ if (!mxc_jpeg_valid_comp_id(dev, psof, psos))
+ dev_warn(dev, "JPEG component ids should be 0-3 or 1-4");
+
+ fourcc = mxc_jpeg_get_image_format(dev, header);
+ if (fourcc == 0)
+ return -EINVAL;
+
+ /*
+ * set-up the capture queue with the pixelformat and resolution
+ * detected from the jpeg output stream
+ */
+ q_data_cap = mxc_jpeg_get_q_data(ctx, cap_type);
+ if (q_data_cap->w != header.frame.width ||
+ q_data_cap->h != header.frame.height)
+ src_chg = true;
+ q_data_cap->w = header.frame.width;
+ q_data_cap->h = header.frame.height;
+ q_data_cap->fmt = mxc_jpeg_find_format(ctx, fourcc);
+ q_data_cap->w_adjusted = q_data_cap->w;
+ q_data_cap->h_adjusted = q_data_cap->h;
+ /*
+ * align up the resolution for CAST IP,
+ * but leave the buffer resolution unchanged
+ */
+ v4l_bound_align_image(&q_data_cap->w_adjusted,
+ q_data_cap->w_adjusted, /* adjust up */
+ MXC_JPEG_MAX_WIDTH,
+ q_data_cap->fmt->h_align,
+ &q_data_cap->h_adjusted,
+ q_data_cap->h_adjusted, /* adjust up */
+ MXC_JPEG_MAX_HEIGHT,
+ q_data_cap->fmt->v_align,
+ 0);
+ dev_dbg(dev, "Detected jpeg res=(%dx%d)->(%dx%d), pixfmt=%c%c%c%c\n",
+ q_data_cap->w, q_data_cap->h,
+ q_data_cap->w_adjusted, q_data_cap->h_adjusted,
+ (fourcc & 0xff),
+ (fourcc >> 8) & 0xff,
+ (fourcc >> 16) & 0xff,
+ (fourcc >> 24) & 0xff);
+
+ /* setup bytesperline/sizeimage for capture queue */
+ mxc_jpeg_bytesperline(q_data_cap, header.frame.precision);
+ mxc_jpeg_sizeimage(q_data_cap);
+
+ /*
+ * if the CAPTURE format was updated with new values, regardless of
+ * whether they match the values set by the client or not, signal
+ * a source change event
+ */
+ if (src_chg)
+ notify_src_chg(ctx);
+
+ return 0;
+}
+
+static void mxc_jpeg_buf_queue(struct vb2_buffer *vb)
+{
+ int ret;
+ struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
+ struct mxc_jpeg_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
+ struct mxc_jpeg_src_buf *jpeg_src_buf;
+
+ if (vb->vb2_queue->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
+ goto end;
+
+ /* for V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE */
+ if (ctx->mxc_jpeg->mode != MXC_JPEG_DECODE)
+ goto end;
+
+ jpeg_src_buf = vb2_to_mxc_buf(vb);
+ jpeg_src_buf->jpeg_parse_error = false;
+ ret = mxc_jpeg_parse(ctx,
+ (u8 *)vb2_plane_vaddr(vb, 0),
+ vb2_get_plane_payload(vb, 0),
+ &jpeg_src_buf->dht_needed);
+ if (ret)
+ jpeg_src_buf->jpeg_parse_error = true;
+
+end:
+ v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
+}
+
+static int mxc_jpeg_buf_out_validate(struct vb2_buffer *vb)
+{
+ struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
+
+ vbuf->field = V4L2_FIELD_NONE;
+
+ return 0;
+}
+
+static int mxc_jpeg_buf_prepare(struct vb2_buffer *vb)
+{
+ struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
+ struct mxc_jpeg_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
+ struct mxc_jpeg_q_data *q_data = NULL;
+ struct device *dev = ctx->mxc_jpeg->dev;
+ unsigned long sizeimage;
+ int i;
+
+ vbuf->field = V4L2_FIELD_NONE;
+
+ q_data = mxc_jpeg_get_q_data(ctx, vb->vb2_queue->type);
+ if (!q_data)
+ return -EINVAL;
+ for (i = 0; i < q_data->fmt->colplanes; i++) {
+ sizeimage = q_data->sizeimage[i];
+ if (vb2_plane_size(vb, i) < sizeimage) {
+ dev_err(dev, "plane %d too small (%lu < %lu)",
+ i, vb2_plane_size(vb, i), sizeimage);
+ return -EINVAL;
+ }
+ vb2_set_plane_payload(vb, i, sizeimage);
+ }
+ return 0;
+}
+
+static const struct vb2_ops mxc_jpeg_qops = {
+ .queue_setup = mxc_jpeg_queue_setup,
+ .wait_prepare = vb2_ops_wait_prepare,
+ .wait_finish = vb2_ops_wait_finish,
+ .buf_out_validate = mxc_jpeg_buf_out_validate,
+ .buf_prepare = mxc_jpeg_buf_prepare,
+ .start_streaming = mxc_jpeg_start_streaming,
+ .stop_streaming = mxc_jpeg_stop_streaming,
+ .buf_queue = mxc_jpeg_buf_queue,
+};
+
+static int mxc_jpeg_queue_init(void *priv, struct vb2_queue *src_vq,
+ struct vb2_queue *dst_vq)
+{
+ struct mxc_jpeg_ctx *ctx = priv;
+ int ret;
+
+ src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
+ src_vq->io_modes = VB2_MMAP | VB2_DMABUF;
+ src_vq->drv_priv = ctx;
+ src_vq->buf_struct_size = sizeof(struct mxc_jpeg_src_buf);
+ src_vq->ops = &mxc_jpeg_qops;
+ src_vq->mem_ops = &vb2_dma_contig_memops;
+ src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
+ src_vq->lock = &ctx->mxc_jpeg->lock;
+ src_vq->dev = ctx->mxc_jpeg->dev;
+ src_vq->allow_zero_bytesused = 1; /* keep old userspace apps working */
+
+ ret = vb2_queue_init(src_vq);
+ if (ret)
+ return ret;
+
+ dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
+ 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->ops = &mxc_jpeg_qops;
+ dst_vq->mem_ops = &vb2_dma_contig_memops;
+ dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
+ dst_vq->lock = &ctx->mxc_jpeg->lock;
+ dst_vq->dev = ctx->mxc_jpeg->dev;
+
+ ret = vb2_queue_init(dst_vq);
+ return ret;
+}
+
+static void mxc_jpeg_set_default_params(struct mxc_jpeg_ctx *ctx)
+{
+ struct mxc_jpeg_q_data *out_q = &ctx->out_q;
+ struct mxc_jpeg_q_data *cap_q = &ctx->cap_q;
+ struct mxc_jpeg_q_data *q[2] = {out_q, cap_q};
+ int i;
+
+ if (ctx->mxc_jpeg->mode == MXC_JPEG_ENCODE) {
+ out_q->fmt = mxc_jpeg_find_format(ctx, MXC_JPEG_DEFAULT_PFMT);
+ cap_q->fmt = mxc_jpeg_find_format(ctx, V4L2_PIX_FMT_JPEG);
+ } else {
+ out_q->fmt = mxc_jpeg_find_format(ctx, V4L2_PIX_FMT_JPEG);
+ cap_q->fmt = mxc_jpeg_find_format(ctx, MXC_JPEG_DEFAULT_PFMT);
+ }
+
+ for (i = 0; i < 2; i++) {
+ q[i]->w = MXC_JPEG_DEFAULT_WIDTH;
+ q[i]->h = MXC_JPEG_DEFAULT_HEIGHT;
+ q[i]->w_adjusted = MXC_JPEG_DEFAULT_WIDTH;
+ q[i]->h_adjusted = MXC_JPEG_DEFAULT_HEIGHT;
+ mxc_jpeg_bytesperline(q[i], 8);
+ mxc_jpeg_sizeimage(q[i]);
+ }
+}
+
+static int mxc_jpeg_open(struct file *file)
+{
+ struct mxc_jpeg_dev *mxc_jpeg = video_drvdata(file);
+ struct video_device *mxc_vfd = video_devdata(file);
+ struct device *dev = mxc_jpeg->dev;
+ struct mxc_jpeg_ctx *ctx;
+ int ret = 0;
+
+ ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
+ if (!ctx)
+ return -ENOMEM;
+
+ if (mutex_lock_interruptible(&mxc_jpeg->lock)) {
+ ret = -ERESTARTSYS;
+ goto free;
+ }
+
+ v4l2_fh_init(&ctx->fh, mxc_vfd);
+ file->private_data = &ctx->fh;
+ v4l2_fh_add(&ctx->fh);
+
+ ctx->mxc_jpeg = mxc_jpeg;
+
+ ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(mxc_jpeg->m2m_dev, ctx,
+ mxc_jpeg_queue_init);
+
+ if (IS_ERR(ctx->fh.m2m_ctx)) {
+ ret = PTR_ERR(ctx->fh.m2m_ctx);
+ goto error;
+ }
+
+ mxc_jpeg_set_default_params(ctx);
+ ctx->slot = MXC_MAX_SLOTS; /* slot not allocated yet */
+
+ if (mxc_jpeg->mode == MXC_JPEG_DECODE)
+ dev_dbg(dev, "Opened JPEG decoder instance %p\n", ctx);
+ else
+ dev_dbg(dev, "Opened JPEG encoder instance %p\n", ctx);
+ mutex_unlock(&mxc_jpeg->lock);
+
+ return 0;
+
+error:
+ v4l2_fh_del(&ctx->fh);
+ v4l2_fh_exit(&ctx->fh);
+ mutex_unlock(&mxc_jpeg->lock);
+free:
+ kfree(ctx);
+ return ret;
+}
+
+static int mxc_jpeg_querycap(struct file *file, void *priv,
+ struct v4l2_capability *cap)
+{
+ struct mxc_jpeg_dev *mxc_jpeg = video_drvdata(file);
+
+ strscpy(cap->driver, MXC_JPEG_NAME " codec", sizeof(cap->driver));
+ strscpy(cap->card, MXC_JPEG_NAME " codec", sizeof(cap->card));
+ snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
+ dev_name(mxc_jpeg->dev));
+ cap->device_caps = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_M2M_MPLANE;
+ cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
+
+ return 0;
+}
+
+static int mxc_jpeg_enum_fmt_vid_cap(struct file *file, void *priv,
+ struct v4l2_fmtdesc *f)
+{
+ struct mxc_jpeg_ctx *ctx = mxc_jpeg_fh_to_ctx(priv);
+
+ if (ctx->mxc_jpeg->mode == MXC_JPEG_ENCODE)
+ return enum_fmt(mxc_formats, MXC_JPEG_NUM_FORMATS, f,
+ MXC_JPEG_FMT_TYPE_ENC);
+ else
+ return enum_fmt(mxc_formats, MXC_JPEG_NUM_FORMATS, f,
+ MXC_JPEG_FMT_TYPE_RAW);
+}
+
+static int mxc_jpeg_enum_fmt_vid_out(struct file *file, void *priv,
+ struct v4l2_fmtdesc *f)
+{
+ struct mxc_jpeg_ctx *ctx = mxc_jpeg_fh_to_ctx(priv);
+
+ if (ctx->mxc_jpeg->mode == MXC_JPEG_DECODE)
+ return enum_fmt(mxc_formats, MXC_JPEG_NUM_FORMATS, f,
+ MXC_JPEG_FMT_TYPE_ENC);
+ else
+ return enum_fmt(mxc_formats, MXC_JPEG_NUM_FORMATS, f,
+ MXC_JPEG_FMT_TYPE_RAW);
+}
+
+static int mxc_jpeg_try_fmt(struct v4l2_format *f, struct mxc_jpeg_fmt *fmt,
+ struct mxc_jpeg_ctx *ctx, int q_type)
+{
+ struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp;
+ struct v4l2_plane_pix_format *pfmt;
+ u32 w = (pix_mp->width < MXC_JPEG_MAX_WIDTH) ?
+ pix_mp->width : MXC_JPEG_MAX_WIDTH;
+ u32 h = (pix_mp->height < MXC_JPEG_MAX_HEIGHT) ?
+ pix_mp->height : MXC_JPEG_MAX_HEIGHT;
+ int i;
+ struct mxc_jpeg_q_data tmp_q;
+
+ memset(pix_mp->reserved, 0, sizeof(pix_mp->reserved));
+ pix_mp->field = V4L2_FIELD_NONE;
+ pix_mp->num_planes = fmt->colplanes;
+ pix_mp->pixelformat = fmt->fourcc;
+
+ /*
+ * use MXC_JPEG_H_ALIGN instead of fmt->v_align, for vertical
+ * alignment, to loosen up the alignment to multiple of 8,
+ * otherwise NV12-1080p fails as 1080 is not a multiple of 16
+ */
+ v4l_bound_align_image(&w,
+ MXC_JPEG_MIN_WIDTH,
+ w, /* adjust downwards*/
+ fmt->h_align,
+ &h,
+ MXC_JPEG_MIN_HEIGHT,
+ h, /* adjust downwards*/
+ MXC_JPEG_H_ALIGN,
+ 0);
+ pix_mp->width = w; /* negotiate the width */
+ pix_mp->height = h; /* negotiate the height */
+
+ /* get user input into the tmp_q */
+ tmp_q.w = w;
+ tmp_q.h = h;
+ tmp_q.fmt = fmt;
+ for (i = 0; i < pix_mp->num_planes; i++) {
+ pfmt = &pix_mp->plane_fmt[i];
+ tmp_q.bytesperline[i] = pfmt->bytesperline;
+ tmp_q.sizeimage[i] = pfmt->sizeimage;
+ }
+
+ /* calculate bytesperline & sizeimage into the tmp_q */
+ mxc_jpeg_bytesperline(&tmp_q, 8);
+ mxc_jpeg_sizeimage(&tmp_q);
+
+ /* adjust user format according to our calculations */
+ for (i = 0; i < pix_mp->num_planes; i++) {
+ pfmt = &pix_mp->plane_fmt[i];
+ memset(pfmt->reserved, 0, sizeof(pfmt->reserved));
+ pfmt->bytesperline = tmp_q.bytesperline[i];
+ pfmt->sizeimage = tmp_q.sizeimage[i];
+ }
+
+ /* fix colorspace information to sRGB for both output & capture */
+ pix_mp->colorspace = V4L2_COLORSPACE_SRGB;
+ pix_mp->ycbcr_enc = V4L2_YCBCR_ENC_601;
+ pix_mp->xfer_func = V4L2_XFER_FUNC_SRGB;
+ /*
+ * this hardware does not change the range of the samples
+ * but since inside JPEG the YUV quantization is full-range,
+ * this driver will always use full-range for the raw frames, too
+ */
+ pix_mp->quantization = V4L2_QUANTIZATION_FULL_RANGE;
+
+ return 0;
+}
+
+static int mxc_jpeg_try_fmt_vid_cap(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ struct mxc_jpeg_ctx *ctx = mxc_jpeg_fh_to_ctx(priv);
+ struct mxc_jpeg_dev *jpeg = ctx->mxc_jpeg;
+ struct device *dev = jpeg->dev;
+ struct mxc_jpeg_fmt *fmt;
+ u32 fourcc = f->fmt.pix_mp.pixelformat;
+
+ int q_type = (jpeg->mode == MXC_JPEG_DECODE) ?
+ MXC_JPEG_FMT_TYPE_RAW : MXC_JPEG_FMT_TYPE_ENC;
+
+ if (!V4L2_TYPE_IS_MULTIPLANAR(f->type)) {
+ dev_err(dev, "TRY_FMT with Invalid type: %d\n", f->type);
+ return -EINVAL;
+ }
+
+ fmt = mxc_jpeg_find_format(ctx, fourcc);
+ if (!fmt || fmt->flags != q_type) {
+ dev_warn(dev, "Format not supported: %c%c%c%c, use the default.\n",
+ (fourcc & 0xff),
+ (fourcc >> 8) & 0xff,
+ (fourcc >> 16) & 0xff,
+ (fourcc >> 24) & 0xff);
+ f->fmt.pix_mp.pixelformat = (jpeg->mode == MXC_JPEG_DECODE) ?
+ MXC_JPEG_DEFAULT_PFMT : V4L2_PIX_FMT_JPEG;
+ fmt = mxc_jpeg_find_format(ctx, f->fmt.pix_mp.pixelformat);
+ }
+ return mxc_jpeg_try_fmt(f, fmt, ctx, q_type);
+}
+
+static int mxc_jpeg_try_fmt_vid_out(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ struct mxc_jpeg_ctx *ctx = mxc_jpeg_fh_to_ctx(priv);
+ struct mxc_jpeg_dev *jpeg = ctx->mxc_jpeg;
+ struct device *dev = jpeg->dev;
+ struct mxc_jpeg_fmt *fmt;
+ u32 fourcc = f->fmt.pix_mp.pixelformat;
+
+ int q_type = (jpeg->mode == MXC_JPEG_ENCODE) ?
+ MXC_JPEG_FMT_TYPE_RAW : MXC_JPEG_FMT_TYPE_ENC;
+
+ if (!V4L2_TYPE_IS_MULTIPLANAR(f->type)) {
+ dev_err(dev, "TRY_FMT with Invalid type: %d\n", f->type);
+ return -EINVAL;
+ }
+
+ fmt = mxc_jpeg_find_format(ctx, fourcc);
+ if (!fmt || fmt->flags != q_type) {
+ dev_warn(dev, "Format not supported: %c%c%c%c, use the default.\n",
+ (fourcc & 0xff),
+ (fourcc >> 8) & 0xff,
+ (fourcc >> 16) & 0xff,
+ (fourcc >> 24) & 0xff);
+ f->fmt.pix_mp.pixelformat = (jpeg->mode == MXC_JPEG_ENCODE) ?
+ MXC_JPEG_DEFAULT_PFMT : V4L2_PIX_FMT_JPEG;
+ fmt = mxc_jpeg_find_format(ctx, f->fmt.pix_mp.pixelformat);
+ }
+ return mxc_jpeg_try_fmt(f, fmt, ctx, q_type);
+}
+
+static int mxc_jpeg_s_fmt(struct mxc_jpeg_ctx *ctx,
+ struct v4l2_format *f)
+{
+ struct vb2_queue *vq;
+ struct mxc_jpeg_q_data *q_data = NULL;
+ struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp;
+ struct mxc_jpeg_dev *jpeg = ctx->mxc_jpeg;
+ int i;
+
+ vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
+ if (!vq)
+ return -EINVAL;
+
+ q_data = mxc_jpeg_get_q_data(ctx, f->type);
+
+ if (vb2_is_busy(vq)) {
+ v4l2_err(&jpeg->v4l2_dev, "queue busy\n");
+ return -EBUSY;
+ }
+
+ q_data->fmt = mxc_jpeg_find_format(ctx, pix_mp->pixelformat);
+ q_data->w = pix_mp->width;
+ q_data->h = pix_mp->height;
+
+ q_data->w_adjusted = q_data->w;
+ q_data->h_adjusted = q_data->h;
+ if (jpeg->mode == MXC_JPEG_DECODE) {
+ /*
+ * align up the resolution for CAST IP,
+ * but leave the buffer resolution unchanged
+ */
+ v4l_bound_align_image(&q_data->w_adjusted,
+ q_data->w_adjusted, /* adjust upwards */
+ MXC_JPEG_MAX_WIDTH,
+ q_data->fmt->h_align,
+ &q_data->h_adjusted,
+ q_data->h_adjusted, /* adjust upwards */
+ MXC_JPEG_MAX_HEIGHT,
+ q_data->fmt->v_align,
+ 0);
+ } else {
+ /*
+ * align down the resolution for CAST IP,
+ * but leave the buffer resolution unchanged
+ */
+ v4l_bound_align_image(&q_data->w_adjusted,
+ MXC_JPEG_MIN_WIDTH,
+ q_data->w_adjusted, /* adjust downwards*/
+ q_data->fmt->h_align,
+ &q_data->h_adjusted,
+ MXC_JPEG_MIN_HEIGHT,
+ q_data->h_adjusted, /* adjust downwards*/
+ q_data->fmt->v_align,
+ 0);
+ }
+
+ for (i = 0; i < pix_mp->num_planes; i++) {
+ q_data->bytesperline[i] = pix_mp->plane_fmt[i].bytesperline;
+ q_data->sizeimage[i] = pix_mp->plane_fmt[i].sizeimage;
+ }
+
+ return 0;
+}
+
+static int mxc_jpeg_s_fmt_vid_cap(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ int ret;
+
+ ret = mxc_jpeg_try_fmt_vid_cap(file, priv, f);
+ if (ret)
+ return ret;
+
+ return mxc_jpeg_s_fmt(mxc_jpeg_fh_to_ctx(priv), f);
+}
+
+static int mxc_jpeg_s_fmt_vid_out(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ int ret;
+
+ ret = mxc_jpeg_try_fmt_vid_out(file, priv, f);
+ if (ret)
+ return ret;
+
+ return mxc_jpeg_s_fmt(mxc_jpeg_fh_to_ctx(priv), f);
+}
+
+static int mxc_jpeg_g_fmt_vid(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ struct mxc_jpeg_ctx *ctx = mxc_jpeg_fh_to_ctx(priv);
+ struct mxc_jpeg_dev *jpeg = ctx->mxc_jpeg;
+ struct device *dev = jpeg->dev;
+ struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp;
+ struct mxc_jpeg_q_data *q_data = mxc_jpeg_get_q_data(ctx, f->type);
+ int i;
+
+ if (!V4L2_TYPE_IS_MULTIPLANAR(f->type)) {
+ dev_err(dev, "G_FMT with Invalid type: %d\n", f->type);
+ return -EINVAL;
+ }
+
+ pix_mp->pixelformat = q_data->fmt->fourcc;
+ pix_mp->width = q_data->w;
+ pix_mp->height = q_data->h;
+ pix_mp->field = V4L2_FIELD_NONE;
+
+ /* fix colorspace information to sRGB for both output & capture */
+ pix_mp->colorspace = V4L2_COLORSPACE_SRGB;
+ pix_mp->ycbcr_enc = V4L2_YCBCR_ENC_601;
+ pix_mp->xfer_func = V4L2_XFER_FUNC_SRGB;
+ pix_mp->quantization = V4L2_QUANTIZATION_FULL_RANGE;
+
+ pix_mp->num_planes = q_data->fmt->colplanes;
+ for (i = 0; i < pix_mp->num_planes; i++) {
+ pix_mp->plane_fmt[i].bytesperline = q_data->bytesperline[i];
+ pix_mp->plane_fmt[i].sizeimage = q_data->sizeimage[i];
+ }
+
+ return 0;
+}
+
+static int mxc_jpeg_subscribe_event(struct v4l2_fh *fh,
+ const struct v4l2_event_subscription *sub)
+{
+ switch (sub->type) {
+ case V4L2_EVENT_EOS:
+ return v4l2_event_subscribe(fh, sub, 0, NULL);
+ case V4L2_EVENT_SOURCE_CHANGE:
+ return v4l2_src_change_event_subscribe(fh, sub);
+ default:
+ return -EINVAL;
+ }
+}
+
+static int mxc_jpeg_dqbuf(struct file *file, void *priv,
+ struct v4l2_buffer *buf)
+{
+ struct v4l2_fh *fh = file->private_data;
+ struct mxc_jpeg_ctx *ctx = mxc_jpeg_fh_to_ctx(priv);
+ struct device *dev = ctx->mxc_jpeg->dev;
+ int num_src_ready = v4l2_m2m_num_src_bufs_ready(fh->m2m_ctx);
+ int ret;
+
+ dev_dbg(dev, "DQBUF type=%d, index=%d", buf->type, buf->index);
+ if (ctx->stopping == 1 && num_src_ready == 0) {
+ /* No more src bufs, notify app EOS */
+ notify_eos(ctx);
+ ctx->stopping = 0;
+ }
+
+ ret = v4l2_m2m_dqbuf(file, fh->m2m_ctx, buf);
+
+ return ret;
+}
+
+static const struct v4l2_ioctl_ops mxc_jpeg_ioctl_ops = {
+ .vidioc_querycap = mxc_jpeg_querycap,
+ .vidioc_enum_fmt_vid_cap = mxc_jpeg_enum_fmt_vid_cap,
+ .vidioc_enum_fmt_vid_out = mxc_jpeg_enum_fmt_vid_out,
+
+ .vidioc_try_fmt_vid_cap_mplane = mxc_jpeg_try_fmt_vid_cap,
+ .vidioc_try_fmt_vid_out_mplane = mxc_jpeg_try_fmt_vid_out,
+
+ .vidioc_s_fmt_vid_cap_mplane = mxc_jpeg_s_fmt_vid_cap,
+ .vidioc_s_fmt_vid_out_mplane = mxc_jpeg_s_fmt_vid_out,
+
+ .vidioc_g_fmt_vid_cap_mplane = mxc_jpeg_g_fmt_vid,
+ .vidioc_g_fmt_vid_out_mplane = mxc_jpeg_g_fmt_vid,
+
+ .vidioc_subscribe_event = mxc_jpeg_subscribe_event,
+ .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
+
+ .vidioc_try_decoder_cmd = v4l2_m2m_ioctl_try_decoder_cmd,
+ .vidioc_decoder_cmd = mxc_jpeg_decoder_cmd,
+ .vidioc_try_encoder_cmd = v4l2_m2m_ioctl_try_encoder_cmd,
+ .vidioc_encoder_cmd = mxc_jpeg_encoder_cmd,
+
+ .vidioc_qbuf = v4l2_m2m_ioctl_qbuf,
+ .vidioc_dqbuf = mxc_jpeg_dqbuf,
+
+ .vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs,
+ .vidioc_prepare_buf = v4l2_m2m_ioctl_prepare_buf,
+ .vidioc_reqbufs = v4l2_m2m_ioctl_reqbufs,
+ .vidioc_querybuf = v4l2_m2m_ioctl_querybuf,
+ .vidioc_expbuf = v4l2_m2m_ioctl_expbuf,
+ .vidioc_streamon = v4l2_m2m_ioctl_streamon,
+ .vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
+};
+
+static int mxc_jpeg_release(struct file *file)
+{
+ struct mxc_jpeg_dev *mxc_jpeg = video_drvdata(file);
+ struct mxc_jpeg_ctx *ctx = mxc_jpeg_fh_to_ctx(file->private_data);
+ struct device *dev = mxc_jpeg->dev;
+
+ mutex_lock(&mxc_jpeg->lock);
+ if (mxc_jpeg->mode == MXC_JPEG_DECODE)
+ dev_dbg(dev, "Release JPEG decoder instance on slot %d.",
+ ctx->slot);
+ else
+ dev_dbg(dev, "Release JPEG encoder instance on slot %d.",
+ ctx->slot);
+ v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
+ v4l2_fh_del(&ctx->fh);
+ v4l2_fh_exit(&ctx->fh);
+ kfree(ctx);
+ mutex_unlock(&mxc_jpeg->lock);
+
+ return 0;
+}
+
+static const struct v4l2_file_operations mxc_jpeg_fops = {
+ .owner = THIS_MODULE,
+ .open = mxc_jpeg_open,
+ .release = mxc_jpeg_release,
+ .poll = v4l2_m2m_fop_poll,
+ .unlocked_ioctl = video_ioctl2,
+ .mmap = v4l2_m2m_fop_mmap,
+};
+
+static struct v4l2_m2m_ops mxc_jpeg_m2m_ops = {
+ .device_run = mxc_jpeg_device_run,
+};
+
+static void mxc_jpeg_detach_pm_domains(struct mxc_jpeg_dev *jpeg)
+{
+ int i;
+
+ for (i = 0; i < jpeg->num_domains; i++) {
+ if (jpeg->pd_link[i] && !IS_ERR(jpeg->pd_link[i]))
+ device_link_del(jpeg->pd_link[i]);
+ if (jpeg->pd_dev[i] && !IS_ERR(jpeg->pd_dev[i]))
+ dev_pm_domain_detach(jpeg->pd_dev[i], true);
+ jpeg->pd_dev[i] = NULL;
+ jpeg->pd_link[i] = NULL;
+ }
+}
+
+static int mxc_jpeg_attach_pm_domains(struct mxc_jpeg_dev *jpeg)
+{
+ struct device *dev = jpeg->dev;
+ struct device_node *np = jpeg->pdev->dev.of_node;
+ int i;
+ int ret;
+
+ jpeg->num_domains = of_count_phandle_with_args(np, "power-domains",
+ "#power-domain-cells");
+ if (jpeg->num_domains < 0) {
+ dev_err(dev, "No power domains defined for jpeg node\n");
+ return jpeg->num_domains;
+ }
+
+ jpeg->pd_dev = devm_kmalloc_array(dev, jpeg->num_domains,
+ sizeof(*jpeg->pd_dev), GFP_KERNEL);
+ if (!jpeg->pd_dev)
+ return -ENOMEM;
+
+ jpeg->pd_link = devm_kmalloc_array(dev, jpeg->num_domains,
+ sizeof(*jpeg->pd_link), GFP_KERNEL);
+ if (!jpeg->pd_link)
+ return -ENOMEM;
+
+ for (i = 0; i < jpeg->num_domains; i++) {
+ jpeg->pd_dev[i] = dev_pm_domain_attach_by_id(dev, i);
+ if (IS_ERR(jpeg->pd_dev[i])) {
+ ret = PTR_ERR(jpeg->pd_dev[i]);
+ goto fail;
+ }
+
+ jpeg->pd_link[i] = device_link_add(dev, jpeg->pd_dev[i],
+ DL_FLAG_STATELESS |
+ DL_FLAG_PM_RUNTIME |
+ DL_FLAG_RPM_ACTIVE);
+ if (IS_ERR(jpeg->pd_link[i])) {
+ ret = PTR_ERR(jpeg->pd_link[i]);
+ goto fail;
+ }
+ }
+
+ return 0;
+fail:
+ mxc_jpeg_detach_pm_domains(jpeg);
+ return ret;
+}
+
+static int mxc_jpeg_probe(struct platform_device *pdev)
+{
+ struct mxc_jpeg_dev *jpeg;
+ struct device *dev = &pdev->dev;
+ struct resource *res;
+ int dec_irq;
+ int ret;
+ int mode;
+ const struct of_device_id *of_id;
+ unsigned int slot;
+
+ of_id = of_match_node(mxc_jpeg_match, dev->of_node);
+ mode = (int)(u64)of_id->data;
+
+ jpeg = devm_kzalloc(dev, sizeof(struct mxc_jpeg_dev), GFP_KERNEL);
+ if (!jpeg)
+ return -ENOMEM;
+
+ mutex_init(&jpeg->lock);
+ spin_lock_init(&jpeg->hw_lock);
+
+ ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32));
+ if (ret) {
+ dev_err(&pdev->dev, "No suitable DMA available.\n");
+ goto err_irq;
+ }
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ jpeg->base_reg = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(jpeg->base_reg))
+ return PTR_ERR(jpeg->base_reg);
+
+ for (slot = 0; slot < MXC_MAX_SLOTS; slot++) {
+ dec_irq = platform_get_irq(pdev, slot);
+ if (dec_irq < 0) {
+ dev_err(&pdev->dev, "Failed to get irq %d\n", dec_irq);
+ ret = dec_irq;
+ goto err_irq;
+ }
+ ret = devm_request_irq(&pdev->dev, dec_irq, mxc_jpeg_dec_irq,
+ 0, pdev->name, jpeg);
+ if (ret) {
+ dev_err(&pdev->dev, "Failed to request irq %d (%d)\n",
+ dec_irq, ret);
+ goto err_irq;
+ }
+ }
+
+ jpeg->pdev = pdev;
+ jpeg->dev = dev;
+ jpeg->mode = mode;
+
+ ret = mxc_jpeg_attach_pm_domains(jpeg);
+ if (ret < 0) {
+ dev_err(dev, "failed to attach power domains %d\n", ret);
+ return ret;
+ }
+
+ /* v4l2 */
+ ret = v4l2_device_register(dev, &jpeg->v4l2_dev);
+ if (ret) {
+ dev_err(dev, "failed to register v4l2 device\n");
+ goto err_register;
+ }
+ jpeg->m2m_dev = v4l2_m2m_init(&mxc_jpeg_m2m_ops);
+ if (IS_ERR(jpeg->m2m_dev)) {
+ dev_err(dev, "failed to register v4l2 device\n");
+ goto err_m2m;
+ }
+
+ jpeg->dec_vdev = video_device_alloc();
+ if (!jpeg->dec_vdev) {
+ dev_err(dev, "failed to register v4l2 device\n");
+ goto err_vdev_alloc;
+ }
+ if (mode == MXC_JPEG_ENCODE)
+ snprintf(jpeg->dec_vdev->name,
+ sizeof(jpeg->dec_vdev->name),
+ "%s-enc", MXC_JPEG_NAME);
+ else
+ snprintf(jpeg->dec_vdev->name,
+ sizeof(jpeg->dec_vdev->name),
+ "%s-dec", MXC_JPEG_NAME);
+
+ jpeg->dec_vdev->fops = &mxc_jpeg_fops;
+ jpeg->dec_vdev->ioctl_ops = &mxc_jpeg_ioctl_ops;
+ jpeg->dec_vdev->minor = -1;
+ jpeg->dec_vdev->release = video_device_release;
+ jpeg->dec_vdev->lock = &jpeg->lock; /* lock for ioctl serialization */
+ jpeg->dec_vdev->v4l2_dev = &jpeg->v4l2_dev;
+ jpeg->dec_vdev->vfl_dir = VFL_DIR_M2M;
+ jpeg->dec_vdev->device_caps = V4L2_CAP_STREAMING |
+ V4L2_CAP_VIDEO_M2M_MPLANE;
+ if (mode == MXC_JPEG_ENCODE) {
+ v4l2_disable_ioctl(jpeg->dec_vdev, VIDIOC_DECODER_CMD);
+ v4l2_disable_ioctl(jpeg->dec_vdev, VIDIOC_TRY_DECODER_CMD);
+ } else {
+ v4l2_disable_ioctl(jpeg->dec_vdev, VIDIOC_ENCODER_CMD);
+ v4l2_disable_ioctl(jpeg->dec_vdev, VIDIOC_TRY_ENCODER_CMD);
+ }
+ ret = video_register_device(jpeg->dec_vdev, VFL_TYPE_VIDEO, -1);
+ if (ret) {
+ dev_err(dev, "failed to register video device\n");
+ goto err_vdev_register;
+ }
+ video_set_drvdata(jpeg->dec_vdev, jpeg);
+ if (mode == MXC_JPEG_ENCODE)
+ v4l2_info(&jpeg->v4l2_dev,
+ "encoder device registered as /dev/video%d (%d,%d)\n",
+ jpeg->dec_vdev->num, VIDEO_MAJOR,
+ jpeg->dec_vdev->minor);
+ else
+ v4l2_info(&jpeg->v4l2_dev,
+ "decoder device registered as /dev/video%d (%d,%d)\n",
+ jpeg->dec_vdev->num, VIDEO_MAJOR,
+ jpeg->dec_vdev->minor);
+
+ platform_set_drvdata(pdev, jpeg);
+
+ return 0;
+
+err_vdev_register:
+ video_device_release(jpeg->dec_vdev);
+
+err_vdev_alloc:
+ v4l2_m2m_release(jpeg->m2m_dev);
+
+err_m2m:
+ v4l2_device_unregister(&jpeg->v4l2_dev);
+
+err_register:
+err_irq:
+ return ret;
+}
+
+static int mxc_jpeg_remove(struct platform_device *pdev)
+{
+ unsigned int slot;
+ struct mxc_jpeg_dev *jpeg = platform_get_drvdata(pdev);
+
+ for (slot = 0; slot < MXC_MAX_SLOTS; slot++)
+ mxc_jpeg_free_slot_data(jpeg, slot);
+
+ video_unregister_device(jpeg->dec_vdev);
+ video_device_release(jpeg->dec_vdev);
+ v4l2_m2m_release(jpeg->m2m_dev);
+ v4l2_device_unregister(&jpeg->v4l2_dev);
+ mxc_jpeg_detach_pm_domains(jpeg);
+
+ return 0;
+}
+
+MODULE_DEVICE_TABLE(of, mxc_jpeg_match);
+
+static struct platform_driver mxc_jpeg_driver = {
+ .probe = mxc_jpeg_probe,
+ .remove = mxc_jpeg_remove,
+ .driver = {
+ .name = "mxc-jpeg",
+ .of_match_table = mxc_jpeg_match,
+ },
+};
+module_platform_driver(mxc_jpeg_driver);
+
+MODULE_AUTHOR("Zhengyu Shen <zhengyu.shen_1@....com>");
+MODULE_AUTHOR("Mirela Rabulea <mirela.rabulea@....com>");
+MODULE_DESCRIPTION("V4L2 driver for i.MX8 QXP/QM JPEG encoder/decoder");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/media/platform/imx-jpeg/mxc-jpeg.h b/drivers/media/platform/imx-jpeg/mxc-jpeg.h
new file mode 100644
index 000000000000..313b09f831a4
--- /dev/null
+++ b/drivers/media/platform/imx-jpeg/mxc-jpeg.h
@@ -0,0 +1,180 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * i.MX8QXP/i.MX8QM JPEG encoder/decoder v4l2 driver
+ *
+ * Copyright 2018-2019 NXP
+ */
+
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-fh.h>
+
+#ifndef _MXC_JPEG_CORE_H
+#define _MXC_JPEG_CORE_H
+
+#define MXC_JPEG_NAME "mxc-jpeg"
+#define MXC_JPEG_FMT_TYPE_ENC 0
+#define MXC_JPEG_FMT_TYPE_RAW 1
+#define MXC_JPEG_DEFAULT_WIDTH 1280
+#define MXC_JPEG_DEFAULT_HEIGHT 720
+#define MXC_JPEG_DEFAULT_PFMT V4L2_PIX_FMT_RGB24
+#define MXC_JPEG_MIN_WIDTH 64
+#define MXC_JPEG_MIN_HEIGHT 64
+#define MXC_JPEG_MAX_WIDTH 0x2000
+#define MXC_JPEG_MAX_HEIGHT 0x2000
+#define MXC_JPEG_MAX_CFG_STREAM 0x1000
+#define MXC_JPEG_H_ALIGN 3
+#define MXC_JPEG_W_ALIGN 3
+#define MXC_JPEG_MAX_SIZEIMAGE 0xFFFFFC00
+#define MXC_JPEG_MAX_PLANES 2
+
+enum mxc_jpeg_enc_state {
+ MXC_JPEG_ENCODING = 0, /* jpeg encode phase */
+ MXC_JPEG_ENC_CONF = 1, /* jpeg encoder config phase */
+};
+
+enum mxc_jpeg_mode {
+ MXC_JPEG_DECODE = 0, /* jpeg decode mode */
+ MXC_JPEG_ENCODE = 1, /* jpeg encode mode */
+};
+
+/**
+ * struct jpeg_fmt - driver's internal color format data
+ * @name: format description
+ * @fourcc: fourcc code, 0 if not applicable
+ * @subsampling subsampling of jpeg components
+ * @nc: number of color components
+ * @depth: number of bits per pixel
+ * @colplanes: number of color planes (1 for packed formats)
+ * @h_align: horizontal alignment order (align to 2^h_align)
+ * @v_align: vertical alignment order (align to 2^v_align)
+ * @flags: flags describing format applicability
+ */
+struct mxc_jpeg_fmt {
+ char *name;
+ u32 fourcc;
+ enum v4l2_jpeg_chroma_subsampling subsampling;
+ int nc;
+ int depth;
+ int colplanes;
+ int h_align;
+ int v_align;
+ u32 flags;
+};
+
+struct mxc_jpeg_desc {
+ u32 next_descpt_ptr;
+ u32 buf_base0;
+ u32 buf_base1;
+ u32 line_pitch;
+ u32 stm_bufbase;
+ u32 stm_bufsize;
+ u32 imgsize;
+ u32 stm_ctrl;
+} __packed;
+
+struct mxc_jpeg_q_data {
+ struct mxc_jpeg_fmt *fmt;
+ u32 sizeimage[MXC_JPEG_MAX_PLANES];
+ u32 bytesperline[MXC_JPEG_MAX_PLANES];
+ int w;
+ int w_adjusted;
+ int h;
+ int h_adjusted;
+ unsigned int sequence;
+};
+
+struct mxc_jpeg_ctx {
+ struct mxc_jpeg_dev *mxc_jpeg;
+ struct mxc_jpeg_q_data out_q;
+ struct mxc_jpeg_q_data cap_q;
+ struct v4l2_fh fh;
+ enum mxc_jpeg_enc_state enc_state;
+ unsigned int stopping;
+ unsigned int slot;
+};
+
+struct mxc_jpeg_slot_data {
+ bool used;
+ struct mxc_jpeg_desc *desc; // enc/dec descriptor
+ struct mxc_jpeg_desc *cfg_desc; // configuration descriptor
+ void *cfg_stream_vaddr; // configuration bitstream virtual address
+ unsigned int cfg_stream_size;
+ dma_addr_t desc_handle;
+ dma_addr_t cfg_desc_handle; // configuration descriptor dma address
+ dma_addr_t cfg_stream_handle; // configuration bitstream dma address
+};
+
+struct mxc_jpeg_dev {
+ spinlock_t hw_lock; /* hardware access lock */
+ unsigned int mode;
+ struct mutex lock; /* v4l2 ioctls serialization */
+ struct platform_device *pdev;
+ struct device *dev;
+ void __iomem *base_reg;
+ struct v4l2_device v4l2_dev;
+ struct v4l2_m2m_dev *m2m_dev;
+ struct video_device *dec_vdev;
+ struct mxc_jpeg_slot_data slot_data[MXC_MAX_SLOTS];
+ int num_domains;
+ struct device **pd_dev;
+ struct device_link **pd_link;
+};
+
+/**
+ * struct mxc_jpeg_sof_comp - JPEG Start Of Frame component fields
+ * @id: component id
+ * @v: vertical sampling
+ * @h: horizontal sampling
+ * @quantization_table_no: id of quantization table
+ */
+struct mxc_jpeg_sof_comp {
+ u8 id;
+ u8 v :4;
+ u8 h :4;
+ u8 quantization_table_no;
+} __packed;
+
+#define MXC_JPEG_MAX_COMPONENTS 4
+/**
+ * struct mxc_jpeg_sof - JPEG Start Of Frame marker fields
+ * @length: Start of Frame length
+ * @precision: precision (bits per pixel per color component)
+ * @height: image height
+ * @width: image width
+ * @components_no: number of color components
+ * @comp: component fields for each color component
+ */
+struct mxc_jpeg_sof {
+ u16 length;
+ u8 precision;
+ u16 height, width;
+ u8 components_no;
+ struct mxc_jpeg_sof_comp comp[MXC_JPEG_MAX_COMPONENTS];
+} __packed;
+
+/**
+ * struct mxc_jpeg_sof - JPEG Start Of Scan component fields
+ * @id: component id
+ * @huffman_table_no: id of the Huffman table
+ */
+struct mxc_jpeg_sos_comp {
+ u8 id; /*component id*/
+ u8 huffman_table_no;
+} __packed;
+
+/**
+ * struct mxc_jpeg_sof - JPEG Start Of Scan marker fields
+ * @length: Start of Frame length
+ * @components_no: number of color components
+ * @comp: SOS component fields for each color component
+ * @ignorable_bytes: ignorable bytes
+ */
+struct mxc_jpeg_sos {
+ u16 length;
+ u8 components_no;
+ struct mxc_jpeg_sos_comp comp[MXC_JPEG_MAX_COMPONENTS];
+ u8 ignorable_bytes[3];
+} __packed;
+
+#endif
--
2.17.1
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