@@ -492,6 +492,16 @@ config VIDEO_QCOM_VENUS
on various Qualcomm SoCs.
To compile this driver as a module choose m here.
+config VIDEO_MESON_VDEC
+ tristate "Amlogic video decoder driver"
+ depends on VIDEO_DEV && VIDEO_V4L2 && HAS_DMA
+ depends on ARCH_MESON || COMPILE_TEST
+ select VIDEOBUF2_DMA_CONTIG
+ select V4L2_MEM2MEM_DEV
+ select MESON_CANVAS
+ help
+ Support for the video decoder found in gxbb/gxl/gxm chips.
+
endif # V4L_MEM2MEM_DRIVERS
# TI VIDEO PORT Helper Modules
@@ -1 +1,2 @@
obj-$(CONFIG_VIDEO_MESON_AO_CEC) += ao-cec.o
+obj-$(CONFIG_VIDEO_MESON_VDEC) += vdec/
new file mode 100644
@@ -0,0 +1,8 @@
+# SPDX-License-Identifier: GPL-2.0
+# Makefile for Amlogic meson video decoder driver
+
+meson-vdec-objs = esparser.o vdec.o vdec_helpers.o vdec_platform.o
+meson-vdec-objs += vdec_1.o
+meson-vdec-objs += codec_mpeg12.o
+
+obj-$(CONFIG_VIDEO_MESON_VDEC) += meson-vdec.o
new file mode 100644
@@ -0,0 +1,209 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2018 BayLibre, SAS
+ * Author: Maxime Jourdan <mjourdan@baylibre.com>
+ */
+
+#include <media/v4l2-mem2mem.h>
+#include <media/videobuf2-dma-contig.h>
+
+#include "vdec_helpers.h"
+#include "dos_regs.h"
+
+#define SIZE_WORKSPACE SZ_128K
+/* Offset substracted by the firmware from the workspace paddr */
+#define WORKSPACE_OFFSET (5 * SZ_1K)
+
+/* map firmware registers to known MPEG1/2 functions */
+#define MREG_SEQ_INFO AV_SCRATCH_4
+ #define MPEG2_SEQ_DAR_MASK GENMASK(3, 0)
+ #define MPEG2_DAR_4_3 2
+ #define MPEG2_DAR_16_9 3
+ #define MPEG2_DAR_221_100 4
+#define MREG_PIC_INFO AV_SCRATCH_5
+#define MREG_PIC_WIDTH AV_SCRATCH_6
+#define MREG_PIC_HEIGHT AV_SCRATCH_7
+#define MREG_BUFFERIN AV_SCRATCH_8
+#define MREG_BUFFEROUT AV_SCRATCH_9
+#define MREG_CMD AV_SCRATCH_A
+#define MREG_CO_MV_START AV_SCRATCH_B
+#define MREG_ERROR_COUNT AV_SCRATCH_C
+#define MREG_FRAME_OFFSET AV_SCRATCH_D
+#define MREG_WAIT_BUFFER AV_SCRATCH_E
+#define MREG_FATAL_ERROR AV_SCRATCH_F
+
+#define PICINFO_PROG 0x00008000
+#define PICINFO_TOP_FIRST 0x00002000
+
+struct codec_mpeg12 {
+ /* Buffer for the MPEG1/2 Workspace */
+ void *workspace_vaddr;
+ dma_addr_t workspace_paddr;
+};
+
+static const u8 eos_sequence[SZ_1K] = { 0x00, 0x00, 0x01, 0xB7 };
+
+static const u8 *codec_mpeg12_eos_sequence(u32 *len)
+{
+ *len = ARRAY_SIZE(eos_sequence);
+ return eos_sequence;
+}
+
+static int codec_mpeg12_can_recycle(struct amvdec_core *core)
+{
+ return !amvdec_read_dos(core, MREG_BUFFERIN);
+}
+
+static void codec_mpeg12_recycle(struct amvdec_core *core, u32 buf_idx)
+{
+ amvdec_write_dos(core, MREG_BUFFERIN, buf_idx + 1);
+}
+
+static int codec_mpeg12_start(struct amvdec_session *sess)
+{
+ struct amvdec_core *core = sess->core;
+ struct codec_mpeg12 *mpeg12 = sess->priv;
+ int ret;
+
+ mpeg12 = kzalloc(sizeof(*mpeg12), GFP_KERNEL);
+ if (!mpeg12)
+ return -ENOMEM;
+
+ /* Allocate some memory for the MPEG1/2 decoder's state */
+ mpeg12->workspace_vaddr = dma_alloc_coherent(core->dev, SIZE_WORKSPACE,
+ &mpeg12->workspace_paddr,
+ GFP_KERNEL);
+ if (!mpeg12->workspace_vaddr) {
+ dev_err(core->dev, "Failed to request MPEG 1/2 Workspace\n");
+ ret = -ENOMEM;
+ goto free_mpeg12;
+ }
+
+ ret = amvdec_set_canvases(sess, (u32[]){ AV_SCRATCH_0, 0 },
+ (u32[]){ 8, 0 });
+ if (ret)
+ goto free_workspace;
+
+ amvdec_write_dos(core, POWER_CTL_VLD, BIT(4));
+ amvdec_write_dos(core, MREG_CO_MV_START,
+ mpeg12->workspace_paddr + WORKSPACE_OFFSET);
+
+ amvdec_write_dos(core, MPEG1_2_REG, 0);
+ amvdec_write_dos(core, PSCALE_CTRL, 0);
+ amvdec_write_dos(core, PIC_HEAD_INFO, 0x380);
+ amvdec_write_dos(core, M4_CONTROL_REG, 0);
+ amvdec_write_dos(core, MREG_BUFFERIN, 0);
+ amvdec_write_dos(core, MREG_BUFFEROUT, 0);
+ amvdec_write_dos(core, MREG_CMD, (sess->width << 16) | sess->height);
+ amvdec_write_dos(core, MREG_ERROR_COUNT, 0);
+ amvdec_write_dos(core, MREG_FATAL_ERROR, 0);
+ amvdec_write_dos(core, MREG_WAIT_BUFFER, 0);
+
+ sess->keyframe_found = 1;
+ sess->priv = mpeg12;
+
+ return 0;
+
+free_workspace:
+ dma_free_coherent(core->dev, SIZE_WORKSPACE, mpeg12->workspace_vaddr,
+ mpeg12->workspace_paddr);
+free_mpeg12:
+ kfree(mpeg12);
+
+ return ret;
+}
+
+static int codec_mpeg12_stop(struct amvdec_session *sess)
+{
+ struct codec_mpeg12 *mpeg12 = sess->priv;
+ struct amvdec_core *core = sess->core;
+
+ if (mpeg12->workspace_vaddr)
+ dma_free_coherent(core->dev, SIZE_WORKSPACE,
+ mpeg12->workspace_vaddr,
+ mpeg12->workspace_paddr);
+
+ return 0;
+}
+
+static void codec_mpeg12_update_dar(struct amvdec_session *sess)
+{
+ struct amvdec_core *core = sess->core;
+ u32 seq = amvdec_read_dos(core, MREG_SEQ_INFO);
+ u32 ar = seq & MPEG2_SEQ_DAR_MASK;
+
+ switch (ar) {
+ case MPEG2_DAR_4_3:
+ amvdec_set_par_from_dar(sess, 4, 3);
+ break;
+ case MPEG2_DAR_16_9:
+ amvdec_set_par_from_dar(sess, 16, 9);
+ break;
+ case MPEG2_DAR_221_100:
+ amvdec_set_par_from_dar(sess, 221, 100);
+ break;
+ default:
+ sess->pixelaspect.numerator = 1;
+ sess->pixelaspect.denominator = 1;
+ break;
+ };
+}
+
+static irqreturn_t codec_mpeg12_threaded_isr(struct amvdec_session *sess)
+{
+ struct amvdec_core *core = sess->core;
+ u32 reg;
+ u32 pic_info;
+ u32 is_progressive;
+ u32 buffer_index;
+ u32 field = V4L2_FIELD_NONE;
+ u32 offset;
+
+ amvdec_write_dos(core, ASSIST_MBOX1_CLR_REG, 1);
+ reg = amvdec_read_dos(core, MREG_FATAL_ERROR);
+ if (reg == 1) {
+ dev_err(core->dev, "MPEG1/2 fatal error\n");
+ amvdec_abort(sess);
+ return IRQ_HANDLED;
+ }
+
+ reg = amvdec_read_dos(core, MREG_BUFFEROUT);
+ if (!reg)
+ return IRQ_HANDLED;
+
+ /* Unclear what this means */
+ if ((reg & GENMASK(23, 17)) == GENMASK(23, 17))
+ goto end;
+
+ pic_info = amvdec_read_dos(core, MREG_PIC_INFO);
+ is_progressive = pic_info & PICINFO_PROG;
+
+ if (!is_progressive)
+ field = (pic_info & PICINFO_TOP_FIRST) ?
+ V4L2_FIELD_INTERLACED_TB :
+ V4L2_FIELD_INTERLACED_BT;
+
+ codec_mpeg12_update_dar(sess);
+ buffer_index = ((reg & 0xf) - 1) & 7;
+ offset = amvdec_read_dos(core, MREG_FRAME_OFFSET);
+ amvdec_dst_buf_done_idx(sess, buffer_index, offset, field);
+
+end:
+ amvdec_write_dos(core, MREG_BUFFEROUT, 0);
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t codec_mpeg12_isr(struct amvdec_session *sess)
+{
+ return IRQ_WAKE_THREAD;
+}
+
+struct amvdec_codec_ops codec_mpeg12_ops = {
+ .start = codec_mpeg12_start,
+ .stop = codec_mpeg12_stop,
+ .isr = codec_mpeg12_isr,
+ .threaded_isr = codec_mpeg12_threaded_isr,
+ .can_recycle = codec_mpeg12_can_recycle,
+ .recycle = codec_mpeg12_recycle,
+ .eos_sequence = codec_mpeg12_eos_sequence,
+};
new file mode 100644
@@ -0,0 +1,14 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (C) 2018 BayLibre, SAS
+ * Author: Maxime Jourdan <mjourdan@baylibre.com>
+ */
+
+#ifndef __MESON_VDEC_CODEC_MPEG12_H_
+#define __MESON_VDEC_CODEC_MPEG12_H_
+
+#include "vdec.h"
+
+extern struct amvdec_codec_ops codec_mpeg12_ops;
+
+#endif
new file mode 100644
@@ -0,0 +1,98 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (C) 2018 BayLibre, SAS
+ * Author: Maxime Jourdan <mjourdan@baylibre.com>
+ */
+
+#ifndef __MESON_VDEC_DOS_REGS_H_
+#define __MESON_VDEC_DOS_REGS_H_
+
+/* DOS registers */
+#define VDEC_ASSIST_AMR1_INT8 0x00b4
+
+#define ASSIST_MBOX1_CLR_REG 0x01d4
+#define ASSIST_MBOX1_MASK 0x01d8
+
+#define MPSR 0x0c04
+#define MCPU_INTR_MSK 0x0c10
+#define CPSR 0x0c84
+
+#define IMEM_DMA_CTRL 0x0d00
+#define IMEM_DMA_ADR 0x0d04
+#define IMEM_DMA_COUNT 0x0d08
+#define LMEM_DMA_CTRL 0x0d40
+
+#define MC_STATUS0 0x2424
+#define MC_CTRL1 0x242c
+
+#define PSCALE_RST 0x2440
+#define PSCALE_CTRL 0x2444
+#define PSCALE_BMEM_ADDR 0x247c
+#define PSCALE_BMEM_DAT 0x2480
+
+#define DBLK_CTRL 0x2544
+#define DBLK_STATUS 0x254c
+
+#define GCLK_EN 0x260c
+#define MDEC_PIC_DC_CTRL 0x2638
+#define MDEC_PIC_DC_STATUS 0x263c
+#define ANC0_CANVAS_ADDR 0x2640
+#define MDEC_PIC_DC_THRESH 0x26e0
+
+/* Firmware interface registers */
+#define AV_SCRATCH_0 0x2700
+#define AV_SCRATCH_1 0x2704
+#define AV_SCRATCH_2 0x2708
+#define AV_SCRATCH_3 0x270c
+#define AV_SCRATCH_4 0x2710
+#define AV_SCRATCH_5 0x2714
+#define AV_SCRATCH_6 0x2718
+#define AV_SCRATCH_7 0x271c
+#define AV_SCRATCH_8 0x2720
+#define AV_SCRATCH_9 0x2724
+#define AV_SCRATCH_A 0x2728
+#define AV_SCRATCH_B 0x272c
+#define AV_SCRATCH_C 0x2730
+#define AV_SCRATCH_D 0x2734
+#define AV_SCRATCH_E 0x2738
+#define AV_SCRATCH_F 0x273c
+#define AV_SCRATCH_G 0x2740
+#define AV_SCRATCH_H 0x2744
+#define AV_SCRATCH_I 0x2748
+#define AV_SCRATCH_J 0x274c
+#define AV_SCRATCH_K 0x2750
+#define AV_SCRATCH_L 0x2754
+
+#define MPEG1_2_REG 0x3004
+#define PIC_HEAD_INFO 0x300c
+#define POWER_CTL_VLD 0x3020
+#define M4_CONTROL_REG 0x30a4
+
+/* Stream Buffer (stbuf) regs */
+#define VLD_MEM_VIFIFO_START_PTR 0x3100
+#define VLD_MEM_VIFIFO_CURR_PTR 0x3104
+#define VLD_MEM_VIFIFO_END_PTR 0x3108
+#define VLD_MEM_VIFIFO_CONTROL 0x3110
+ #define MEM_FIFO_CNT_BIT 16
+ #define MEM_FILL_ON_LEVEL BIT(10)
+ #define MEM_CTRL_EMPTY_EN BIT(2)
+ #define MEM_CTRL_FILL_EN BIT(1)
+#define VLD_MEM_VIFIFO_WP 0x3114
+#define VLD_MEM_VIFIFO_RP 0x3118
+#define VLD_MEM_VIFIFO_LEVEL 0x311c
+#define VLD_MEM_VIFIFO_BUF_CNTL 0x3120
+ #define MEM_BUFCTRL_MANUAL BIT(1)
+#define VLD_MEM_VIFIFO_WRAP_COUNT 0x3144
+
+#define DCAC_DMA_CTRL 0x3848
+
+#define DOS_SW_RESET0 0xfc00
+#define DOS_GCLK_EN0 0xfc04
+#define DOS_GEN_CTRL0 0xfc08
+#define DOS_MEM_PD_VDEC 0xfcc0
+#define DOS_MEM_PD_HEVC 0xfccc
+#define DOS_SW_RESET3 0xfcd0
+#define DOS_GCLK_EN3 0xfcd4
+#define DOS_VDEC_MCRCC_STALL_CTRL 0xfd00
+
+#endif
new file mode 100644
@@ -0,0 +1,322 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2018 BayLibre, SAS
+ * Author: Maxime Jourdan <mjourdan@baylibre.com>
+ *
+ * The Elementary Stream Parser is a HW bitstream parser.
+ * It reads bitstream buffers and feeds them to the VIFIFO
+ */
+
+#include <linux/init.h>
+#include <linux/ioctl.h>
+#include <linux/list.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/reset.h>
+#include <media/videobuf2-dma-contig.h>
+#include <media/v4l2-mem2mem.h>
+
+#include "dos_regs.h"
+#include "esparser.h"
+#include "vdec_helpers.h"
+
+/* PARSER REGS (CBUS) */
+#define PARSER_CONTROL 0x00
+ #define ES_PACK_SIZE_BIT 8
+ #define ES_WRITE BIT(5)
+ #define ES_SEARCH BIT(1)
+ #define ES_PARSER_START BIT(0)
+#define PARSER_FETCH_ADDR 0x4
+#define PARSER_FETCH_CMD 0x8
+#define PARSER_CONFIG 0x14
+ #define PS_CFG_MAX_FETCH_CYCLE_BIT 0
+ #define PS_CFG_STARTCODE_WID_24_BIT 10
+ #define PS_CFG_MAX_ES_WR_CYCLE_BIT 12
+ #define PS_CFG_PFIFO_EMPTY_CNT_BIT 16
+#define PFIFO_WR_PTR 0x18
+#define PFIFO_RD_PTR 0x1c
+#define PARSER_SEARCH_PATTERN 0x24
+ #define ES_START_CODE_PATTERN 0x00000100
+#define PARSER_SEARCH_MASK 0x28
+ #define ES_START_CODE_MASK 0xffffff00
+ #define FETCH_ENDIAN_BIT 27
+#define PARSER_INT_ENABLE 0x2c
+ #define PARSER_INT_HOST_EN_BIT 8
+#define PARSER_INT_STATUS 0x30
+ #define PARSER_INTSTAT_SC_FOUND 1
+#define PARSER_ES_CONTROL 0x5c
+#define PARSER_VIDEO_START_PTR 0x80
+#define PARSER_VIDEO_END_PTR 0x84
+#define PARSER_VIDEO_WP 0x88
+#define PARSER_VIDEO_HOLE 0x90
+
+#define SEARCH_PATTERN_LEN 512
+
+static DECLARE_WAIT_QUEUE_HEAD(wq);
+static int search_done;
+
+static irqreturn_t esparser_isr(int irq, void *dev)
+{
+ int int_status;
+ struct amvdec_core *core = dev;
+
+ int_status = amvdec_read_parser(core, PARSER_INT_STATUS);
+ amvdec_write_parser(core, PARSER_INT_STATUS, int_status);
+
+ if (int_status & PARSER_INTSTAT_SC_FOUND) {
+ amvdec_write_parser(core, PFIFO_RD_PTR, 0);
+ amvdec_write_parser(core, PFIFO_WR_PTR, 0);
+ search_done = 1;
+ wake_up_interruptible(&wq);
+ }
+
+ return IRQ_HANDLED;
+}
+
+/* Pad the packet to at least 4KiB bytes otherwise the VDEC unit won't trigger
+ * ISRs.
+ * Also append a start code 000001ff at the end to trigger
+ * the ESPARSER interrupt.
+ */
+static u32 esparser_pad_start_code(struct vb2_buffer *vb)
+{
+ u32 payload_size = vb2_get_plane_payload(vb, 0);
+ u32 pad_size = 0;
+ u8 *vaddr = vb2_plane_vaddr(vb, 0) + payload_size;
+
+ if (payload_size < ESPARSER_MIN_PACKET_SIZE) {
+ pad_size = ESPARSER_MIN_PACKET_SIZE - payload_size;
+ memset(vaddr, 0, pad_size);
+ }
+
+ memset(vaddr + pad_size, 0, SEARCH_PATTERN_LEN);
+ vaddr[pad_size] = 0x00;
+ vaddr[pad_size + 1] = 0x00;
+ vaddr[pad_size + 2] = 0x01;
+ vaddr[pad_size + 3] = 0xff;
+
+ return pad_size;
+}
+
+static int
+esparser_write_data(struct amvdec_core *core, dma_addr_t addr, u32 size)
+{
+ amvdec_write_parser(core, PFIFO_RD_PTR, 0);
+ amvdec_write_parser(core, PFIFO_WR_PTR, 0);
+ amvdec_write_parser(core, PARSER_CONTROL,
+ ES_WRITE |
+ ES_PARSER_START |
+ ES_SEARCH |
+ (size << ES_PACK_SIZE_BIT));
+
+ amvdec_write_parser(core, PARSER_FETCH_ADDR, addr);
+ amvdec_write_parser(core, PARSER_FETCH_CMD,
+ (7 << FETCH_ENDIAN_BIT) |
+ (size + SEARCH_PATTERN_LEN));
+
+ search_done = 0;
+ return wait_event_interruptible_timeout(wq, search_done, (HZ / 5));
+}
+
+static u32 esparser_vififo_get_free_space(struct amvdec_session *sess)
+{
+ u32 vififo_usage;
+ struct amvdec_ops *vdec_ops = sess->fmt_out->vdec_ops;
+ struct amvdec_core *core = sess->core;
+
+ vififo_usage = vdec_ops->vififo_level(sess);
+ vififo_usage += amvdec_read_parser(core, PARSER_VIDEO_HOLE);
+ vififo_usage += (6 * SZ_1K); // 6 KiB internal fifo
+
+ if (vififo_usage > sess->vififo_size) {
+ dev_warn(sess->core->dev,
+ "VIFIFO usage (%u) > VIFIFO size (%u)\n",
+ vififo_usage, sess->vififo_size);
+ return 0;
+ }
+
+ return sess->vififo_size - vififo_usage;
+}
+
+int esparser_queue_eos(struct amvdec_core *core, const u8 *data, u32 len)
+{
+ struct device *dev = core->dev;
+ void *eos_vaddr;
+ dma_addr_t eos_paddr;
+ int ret;
+
+ eos_vaddr = dma_alloc_coherent(dev,
+ len + SEARCH_PATTERN_LEN,
+ &eos_paddr, GFP_KERNEL);
+ if (!eos_vaddr)
+ return -ENOMEM;
+
+ memset(eos_vaddr, 0, len + SEARCH_PATTERN_LEN);
+ memcpy(eos_vaddr, data, len);
+ ret = esparser_write_data(core, eos_paddr, len);
+ dma_free_coherent(dev, len + SEARCH_PATTERN_LEN,
+ eos_vaddr, eos_paddr);
+
+ return ret;
+}
+
+static u32 esparser_get_offset(struct amvdec_session *sess)
+{
+ struct amvdec_core *core = sess->core;
+ u32 offset = amvdec_read_parser(core, PARSER_VIDEO_WP) -
+ sess->vififo_paddr;
+
+ if (offset < sess->last_offset)
+ sess->wrap_count++;
+
+ sess->last_offset = offset;
+ offset += (sess->wrap_count * sess->vififo_size);
+
+ return offset;
+}
+
+static int
+esparser_queue(struct amvdec_session *sess, struct vb2_v4l2_buffer *vbuf)
+{
+ int ret;
+ struct vb2_buffer *vb = &vbuf->vb2_buf;
+ struct amvdec_core *core = sess->core;
+ struct amvdec_codec_ops *codec_ops = sess->fmt_out->codec_ops;
+ u32 num_dst_bufs = 0;
+ u32 payload_size = vb2_get_plane_payload(vb, 0);
+ dma_addr_t phy = vb2_dma_contig_plane_dma_addr(vb, 0);
+ u32 offset;
+ u32 pad_size;
+
+ if (codec_ops->num_pending_bufs)
+ num_dst_bufs = codec_ops->num_pending_bufs(sess);
+
+ num_dst_bufs += v4l2_m2m_num_dst_bufs_ready(sess->m2m_ctx);
+
+ if (esparser_vififo_get_free_space(sess) < payload_size ||
+ atomic_read(&sess->esparser_queued_bufs) >= num_dst_bufs)
+ return -EAGAIN;
+
+ v4l2_m2m_src_buf_remove_by_buf(sess->m2m_ctx, vbuf);
+
+ offset = esparser_get_offset(sess);
+
+ amvdec_add_ts_reorder(sess, vb->timestamp, offset);
+ dev_dbg(core->dev, "esparser: ts = %llu pld_size = %u offset = %08X\n",
+ vb->timestamp, payload_size, offset);
+
+ pad_size = esparser_pad_start_code(vb);
+ ret = esparser_write_data(core, phy, payload_size + pad_size);
+
+ if (ret <= 0) {
+ dev_warn(core->dev, "esparser: input parsing error\n");
+ amvdec_remove_ts(sess, vb->timestamp);
+ v4l2_m2m_buf_done(vbuf, VB2_BUF_STATE_ERROR);
+ amvdec_write_parser(core, PARSER_FETCH_CMD, 0);
+
+ return 0;
+ }
+
+ /* We need to wait until we parse the first keyframe.
+ * All buffers prior to the first keyframe must be dropped.
+ */
+ if (!sess->keyframe_found)
+ usleep_range(1000, 2000);
+
+ if (sess->keyframe_found)
+ atomic_inc(&sess->esparser_queued_bufs);
+ else
+ amvdec_remove_ts(sess, vb->timestamp);
+
+ vbuf->flags = 0;
+ vbuf->field = V4L2_FIELD_NONE;
+ v4l2_m2m_buf_done(vbuf, VB2_BUF_STATE_DONE);
+
+ return 0;
+}
+
+void esparser_queue_all_src(struct work_struct *work)
+{
+ struct v4l2_m2m_buffer *buf, *n;
+ struct amvdec_session *sess =
+ container_of(work, struct amvdec_session, esparser_queue_work);
+
+ mutex_lock(&sess->lock);
+ v4l2_m2m_for_each_src_buf_safe(sess->m2m_ctx, buf, n) {
+ if (esparser_queue(sess, &buf->vb) < 0)
+ break;
+ }
+ mutex_unlock(&sess->lock);
+}
+
+int esparser_power_up(struct amvdec_session *sess)
+{
+ struct amvdec_core *core = sess->core;
+ struct amvdec_ops *vdec_ops = sess->fmt_out->vdec_ops;
+
+ reset_control_reset(core->esparser_reset);
+ amvdec_write_parser(core, PARSER_CONFIG,
+ (10 << PS_CFG_PFIFO_EMPTY_CNT_BIT) |
+ (1 << PS_CFG_MAX_ES_WR_CYCLE_BIT) |
+ (16 << PS_CFG_MAX_FETCH_CYCLE_BIT));
+
+ amvdec_write_parser(core, PFIFO_RD_PTR, 0);
+ amvdec_write_parser(core, PFIFO_WR_PTR, 0);
+
+ amvdec_write_parser(core, PARSER_SEARCH_PATTERN,
+ ES_START_CODE_PATTERN);
+ amvdec_write_parser(core, PARSER_SEARCH_MASK, ES_START_CODE_MASK);
+
+ amvdec_write_parser(core, PARSER_CONFIG,
+ (10 << PS_CFG_PFIFO_EMPTY_CNT_BIT) |
+ (1 << PS_CFG_MAX_ES_WR_CYCLE_BIT) |
+ (16 << PS_CFG_MAX_FETCH_CYCLE_BIT) |
+ (2 << PS_CFG_STARTCODE_WID_24_BIT));
+
+ amvdec_write_parser(core, PARSER_CONTROL,
+ (ES_SEARCH | ES_PARSER_START));
+
+ amvdec_write_parser(core, PARSER_VIDEO_START_PTR, sess->vififo_paddr);
+ amvdec_write_parser(core, PARSER_VIDEO_END_PTR,
+ sess->vififo_paddr + sess->vififo_size - 8);
+ amvdec_write_parser(core, PARSER_ES_CONTROL,
+ amvdec_read_parser(core, PARSER_ES_CONTROL) & ~1);
+
+ if (vdec_ops->conf_esparser)
+ vdec_ops->conf_esparser(sess);
+
+ amvdec_write_parser(core, PARSER_INT_STATUS, 0xffff);
+ amvdec_write_parser(core, PARSER_INT_ENABLE,
+ BIT(PARSER_INT_HOST_EN_BIT));
+
+ return 0;
+}
+
+int esparser_init(struct platform_device *pdev, struct amvdec_core *core)
+{
+ struct device *dev = &pdev->dev;
+ int ret;
+ int irq;
+
+ irq = platform_get_irq_byname(pdev, "esparser");
+ if (irq < 0) {
+ dev_err(dev, "Failed getting ESPARSER IRQ from dtb\n");
+ return irq;
+ }
+
+ ret = devm_request_irq(dev, irq, esparser_isr, IRQF_SHARED,
+ "esparserirq", core);
+ if (ret) {
+ dev_err(dev, "Failed requesting ESPARSER IRQ\n");
+ return ret;
+ }
+
+ core->esparser_reset =
+ devm_reset_control_get_exclusive(dev, "esparser");
+ if (IS_ERR(core->esparser_reset)) {
+ dev_err(dev, "Failed to get esparser_reset\n");
+ return PTR_ERR(core->esparser_reset);
+ }
+
+ return 0;
+}
new file mode 100644
@@ -0,0 +1,32 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (C) 2018 BayLibre, SAS
+ * Author: Maxime Jourdan <mjourdan@baylibre.com>
+ */
+
+#ifndef __MESON_VDEC_ESPARSER_H_
+#define __MESON_VDEC_ESPARSER_H_
+
+#include <linux/platform_device.h>
+
+#include "vdec.h"
+
+int esparser_init(struct platform_device *pdev, struct amvdec_core *core);
+int esparser_power_up(struct amvdec_session *sess);
+
+/**
+ * esparser_queue_eos() - write End Of Stream sequence to the ESPARSER
+ *
+ * @core vdec core struct
+ */
+int esparser_queue_eos(struct amvdec_core *core, const u8 *data, u32 len);
+
+/**
+ * esparser_queue_all_src() - work handler that writes as many src buffers
+ * as possible to the ESPARSER
+ */
+void esparser_queue_all_src(struct work_struct *work);
+
+#define ESPARSER_MIN_PACKET_SIZE SZ_4K
+
+#endif
new file mode 100644
@@ -0,0 +1,1034 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2018 BayLibre, SAS
+ * Author: Maxime Jourdan <mjourdan@baylibre.com>
+ */
+
+#include <linux/of_device.h>
+#include <linux/clk.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/mfd/syscon.h>
+#include <linux/slab.h>
+#include <media/v4l2-ioctl.h>
+#include <media/v4l2-event.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-mem2mem.h>
+#include <media/v4l2-dev.h>
+#include <media/videobuf2-dma-contig.h>
+
+#include "vdec.h"
+#include "esparser.h"
+#include "vdec_helpers.h"
+
+struct dummy_buf {
+ struct vb2_v4l2_buffer vb;
+ struct list_head list;
+};
+
+/* 16 MiB for parsed bitstream swap exchange */
+#define SIZE_VIFIFO SZ_16M
+
+static u32 get_output_size(u32 width, u32 height)
+{
+ return ALIGN(width * height, SZ_64K);
+}
+
+u32 amvdec_get_output_size(struct amvdec_session *sess)
+{
+ return get_output_size(sess->width, sess->height);
+}
+EXPORT_SYMBOL_GPL(amvdec_get_output_size);
+
+static int vdec_codec_needs_recycle(struct amvdec_session *sess)
+{
+ struct amvdec_codec_ops *codec_ops = sess->fmt_out->codec_ops;
+
+ return codec_ops->can_recycle && codec_ops->recycle;
+}
+
+static int vdec_recycle_thread(void *data)
+{
+ struct amvdec_session *sess = data;
+ struct amvdec_core *core = sess->core;
+ struct amvdec_codec_ops *codec_ops = sess->fmt_out->codec_ops;
+ struct amvdec_buffer *tmp, *n;
+
+ while (!kthread_should_stop()) {
+ mutex_lock(&sess->bufs_recycle_lock);
+ list_for_each_entry_safe(tmp, n, &sess->bufs_recycle, list) {
+ if (!codec_ops->can_recycle(core))
+ break;
+
+ codec_ops->recycle(core, tmp->vb->index);
+ list_del(&tmp->list);
+ kfree(tmp);
+ }
+ mutex_unlock(&sess->bufs_recycle_lock);
+
+ usleep_range(5000, 10000);
+ }
+
+ return 0;
+}
+
+static int vdec_poweron(struct amvdec_session *sess)
+{
+ int ret;
+ struct amvdec_ops *vdec_ops = sess->fmt_out->vdec_ops;
+
+ ret = clk_prepare_enable(sess->core->dos_parser_clk);
+ if (ret)
+ return ret;
+
+ ret = clk_prepare_enable(sess->core->dos_clk);
+ if (ret)
+ goto disable_dos_parser;
+
+ ret = vdec_ops->start(sess);
+ if (ret)
+ goto disable_dos;
+
+ esparser_power_up(sess);
+
+ return 0;
+
+disable_dos:
+ clk_disable_unprepare(sess->core->dos_clk);
+disable_dos_parser:
+ clk_disable_unprepare(sess->core->dos_parser_clk);
+
+ return ret;
+}
+
+static void vdec_wait_inactive(struct amvdec_session *sess)
+{
+ /* We consider 50ms with no IRQ to be inactive. */
+ while (time_is_after_jiffies64(sess->last_irq_jiffies +
+ msecs_to_jiffies(50)))
+ msleep(25);
+}
+
+static void vdec_poweroff(struct amvdec_session *sess)
+{
+ struct amvdec_ops *vdec_ops = sess->fmt_out->vdec_ops;
+ struct amvdec_codec_ops *codec_ops = sess->fmt_out->codec_ops;
+
+ vdec_wait_inactive(sess);
+ if (codec_ops->drain)
+ codec_ops->drain(sess);
+
+ vdec_ops->stop(sess);
+ clk_disable_unprepare(sess->core->dos_clk);
+ clk_disable_unprepare(sess->core->dos_parser_clk);
+}
+
+static void
+vdec_queue_recycle(struct amvdec_session *sess, struct vb2_buffer *vb)
+{
+ struct amvdec_buffer *new_buf;
+
+ new_buf = kmalloc(sizeof(*new_buf), GFP_KERNEL);
+ new_buf->vb = vb;
+
+ mutex_lock(&sess->bufs_recycle_lock);
+ list_add_tail(&new_buf->list, &sess->bufs_recycle);
+ mutex_unlock(&sess->bufs_recycle_lock);
+}
+
+static void vdec_m2m_device_run(void *priv)
+{
+ struct amvdec_session *sess = priv;
+
+ schedule_work(&sess->esparser_queue_work);
+}
+
+static void vdec_m2m_job_abort(void *priv)
+{
+ struct amvdec_session *sess = priv;
+
+ v4l2_m2m_job_finish(sess->m2m_dev, sess->m2m_ctx);
+}
+
+static const struct v4l2_m2m_ops vdec_m2m_ops = {
+ .device_run = vdec_m2m_device_run,
+ .job_abort = vdec_m2m_job_abort,
+};
+
+static int vdec_queue_setup(struct vb2_queue *q,
+ unsigned int *num_buffers, unsigned int *num_planes,
+ unsigned int sizes[], struct device *alloc_devs[])
+{
+ struct amvdec_session *sess = vb2_get_drv_priv(q);
+ const struct amvdec_format *fmt_out = sess->fmt_out;
+ u32 output_size = amvdec_get_output_size(sess);
+ u32 buffers_total;
+
+ if (*num_planes) {
+ switch (q->type) {
+ case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
+ if (*num_planes != 1 || sizes[0] < output_size)
+ return -EINVAL;
+ break;
+ case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
+ switch (sess->pixfmt_cap) {
+ case V4L2_PIX_FMT_NV12M:
+ if (*num_planes != 2 ||
+ sizes[0] < output_size ||
+ sizes[1] < output_size / 2)
+ return -EINVAL;
+ break;
+ case V4L2_PIX_FMT_YUV420M:
+ if (*num_planes != 3 ||
+ sizes[0] < output_size ||
+ sizes[1] < output_size / 4 ||
+ sizes[2] < output_size / 4)
+ return -EINVAL;
+ break;
+ default:
+ return -EINVAL;
+ }
+ break;
+ }
+
+ return 0;
+ }
+
+ switch (q->type) {
+ case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
+ sizes[0] = amvdec_get_output_size(sess);
+ *num_planes = 1;
+ break;
+ case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
+ switch (sess->pixfmt_cap) {
+ case V4L2_PIX_FMT_NV12M:
+ sizes[0] = output_size;
+ sizes[1] = output_size / 2;
+ *num_planes = 2;
+ break;
+ case V4L2_PIX_FMT_YUV420M:
+ sizes[0] = output_size;
+ sizes[1] = output_size / 4;
+ sizes[2] = output_size / 4;
+ *num_planes = 3;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ buffers_total = q->num_buffers + *num_buffers;
+
+ if (buffers_total < fmt_out->min_buffers)
+ *num_buffers = fmt_out->min_buffers - q->num_buffers;
+ if (buffers_total > fmt_out->max_buffers)
+ *num_buffers = fmt_out->max_buffers - q->num_buffers;
+
+ /* We need to program the complete CAPTURE buffer list
+ * in registers during start_streaming, and the firmwares
+ * are free to choose any of them to write frames to. As such,
+ * we need all of them to be queued into the driver
+ */
+ q->min_buffers_needed = q->num_buffers + *num_buffers;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static void vdec_vb2_buf_queue(struct vb2_buffer *vb)
+{
+ struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
+ struct amvdec_session *sess = vb2_get_drv_priv(vb->vb2_queue);
+ struct v4l2_m2m_ctx *m2m_ctx = sess->m2m_ctx;
+
+ v4l2_m2m_buf_queue(m2m_ctx, vbuf);
+
+ if (!sess->streamon_out || !sess->streamon_cap)
+ return;
+
+ if (vb->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE &&
+ vdec_codec_needs_recycle(sess))
+ vdec_queue_recycle(sess, vb);
+
+ schedule_work(&sess->esparser_queue_work);
+}
+
+static int vdec_start_streaming(struct vb2_queue *q, unsigned int count)
+{
+ struct amvdec_session *sess = vb2_get_drv_priv(q);
+ struct amvdec_core *core = sess->core;
+ struct vb2_v4l2_buffer *buf;
+ int ret;
+
+ if (core->cur_sess && core->cur_sess != sess) {
+ ret = -EBUSY;
+ goto bufs_done;
+ }
+
+ if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
+ sess->streamon_out = 1;
+ else
+ sess->streamon_cap = 1;
+
+ if (!sess->streamon_out || !sess->streamon_cap)
+ return 0;
+
+ sess->vififo_size = SIZE_VIFIFO;
+ sess->vififo_vaddr =
+ dma_alloc_coherent(sess->core->dev, sess->vififo_size,
+ &sess->vififo_paddr, GFP_KERNEL);
+ if (!sess->vififo_vaddr) {
+ dev_err(sess->core->dev, "Failed to request VIFIFO buffer\n");
+ ret = -ENOMEM;
+ goto bufs_done;
+ }
+
+ sess->should_stop = 0;
+ sess->keyframe_found = 0;
+ sess->last_offset = 0;
+ sess->wrap_count = 0;
+ sess->pixelaspect.numerator = 1;
+ sess->pixelaspect.denominator = 1;
+ atomic_set(&sess->esparser_queued_bufs, 0);
+
+ ret = vdec_poweron(sess);
+ if (ret)
+ goto vififo_free;
+
+ sess->sequence_cap = 0;
+ if (vdec_codec_needs_recycle(sess))
+ sess->recycle_thread = kthread_run(vdec_recycle_thread, sess,
+ "vdec_recycle");
+
+ core->cur_sess = sess;
+
+ return 0;
+
+vififo_free:
+ dma_free_coherent(sess->core->dev, sess->vififo_size,
+ sess->vififo_vaddr, sess->vififo_paddr);
+bufs_done:
+ while ((buf = v4l2_m2m_src_buf_remove(sess->m2m_ctx)))
+ v4l2_m2m_buf_done(buf, VB2_BUF_STATE_QUEUED);
+ while ((buf = v4l2_m2m_dst_buf_remove(sess->m2m_ctx)))
+ v4l2_m2m_buf_done(buf, VB2_BUF_STATE_QUEUED);
+
+ if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
+ sess->streamon_out = 0;
+ else
+ sess->streamon_cap = 0;
+
+ return ret;
+}
+
+static void vdec_free_canvas(struct amvdec_session *sess)
+{
+ int i;
+
+ for (i = 0; i < sess->canvas_num; ++i)
+ meson_canvas_free(sess->core->canvas, sess->canvas_alloc[i]);
+
+ sess->canvas_num = 0;
+}
+
+static void vdec_reset_timestamps(struct amvdec_session *sess)
+{
+ struct amvdec_timestamp *tmp, *n;
+
+ list_for_each_entry_safe(tmp, n, &sess->timestamps, list) {
+ list_del(&tmp->list);
+ kfree(tmp);
+ }
+}
+
+static void vdec_reset_bufs_recycle(struct amvdec_session *sess)
+{
+ struct amvdec_buffer *tmp, *n;
+
+ list_for_each_entry_safe(tmp, n, &sess->bufs_recycle, list) {
+ list_del(&tmp->list);
+ kfree(tmp);
+ }
+}
+
+static void vdec_stop_streaming(struct vb2_queue *q)
+{
+ struct amvdec_session *sess = vb2_get_drv_priv(q);
+ struct amvdec_core *core = sess->core;
+ struct vb2_v4l2_buffer *buf;
+
+ if (sess->streamon_out && sess->streamon_cap) {
+ if (vdec_codec_needs_recycle(sess))
+ kthread_stop(sess->recycle_thread);
+
+ vdec_poweroff(sess);
+ vdec_free_canvas(sess);
+ dma_free_coherent(sess->core->dev, sess->vififo_size,
+ sess->vififo_vaddr, sess->vififo_paddr);
+ vdec_reset_timestamps(sess);
+ vdec_reset_bufs_recycle(sess);
+ kfree(sess->priv);
+ sess->priv = NULL;
+ core->cur_sess = NULL;
+ }
+
+ if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
+ while ((buf = v4l2_m2m_src_buf_remove(sess->m2m_ctx)))
+ v4l2_m2m_buf_done(buf, VB2_BUF_STATE_ERROR);
+
+ sess->streamon_out = 0;
+ } else {
+ while ((buf = v4l2_m2m_dst_buf_remove(sess->m2m_ctx)))
+ v4l2_m2m_buf_done(buf, VB2_BUF_STATE_ERROR);
+
+ sess->streamon_cap = 0;
+ }
+}
+
+static const struct vb2_ops vdec_vb2_ops = {
+ .queue_setup = vdec_queue_setup,
+ .start_streaming = vdec_start_streaming,
+ .stop_streaming = vdec_stop_streaming,
+ .buf_queue = vdec_vb2_buf_queue,
+ .wait_prepare = vb2_ops_wait_prepare,
+ .wait_finish = vb2_ops_wait_finish,
+};
+
+static int
+vdec_querycap(struct file *file, void *fh, struct v4l2_capability *cap)
+{
+ strscpy(cap->driver, "meson-vdec", sizeof(cap->driver));
+ strscpy(cap->card, "Amlogic Video Decoder", sizeof(cap->card));
+ strscpy(cap->bus_info, "platform:meson-vdec", sizeof(cap->bus_info));
+
+ return 0;
+}
+
+static const struct amvdec_format *
+find_format(const struct amvdec_format *fmts, u32 size, u32 pixfmt)
+{
+ unsigned int i;
+
+ for (i = 0; i < size; i++) {
+ if (fmts[i].pixfmt == pixfmt)
+ return &fmts[i];
+ }
+
+ return NULL;
+}
+
+static unsigned int
+vdec_supports_pixfmt_cap(const struct amvdec_format *fmt_out, u32 pixfmt_cap)
+{
+ int i;
+
+ for (i = 0; fmt_out->pixfmts_cap[i]; i++)
+ if (fmt_out->pixfmts_cap[i] == pixfmt_cap)
+ return 1;
+
+ return 0;
+}
+
+static const struct amvdec_format *
+vdec_try_fmt_common(struct amvdec_session *sess, u32 size,
+ struct v4l2_format *f)
+{
+ struct v4l2_pix_format_mplane *pixmp = &f->fmt.pix_mp;
+ struct v4l2_plane_pix_format *pfmt = pixmp->plane_fmt;
+ const struct amvdec_format *fmts = sess->core->platform->formats;
+ const struct amvdec_format *fmt_out;
+
+ memset(pfmt[0].reserved, 0, sizeof(pfmt[0].reserved));
+ memset(pixmp->reserved, 0, sizeof(pixmp->reserved));
+
+ if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
+ fmt_out = find_format(fmts, size, pixmp->pixelformat);
+ if (!fmt_out) {
+ pixmp->pixelformat = V4L2_PIX_FMT_MPEG2;
+ fmt_out = find_format(fmts, size, pixmp->pixelformat);
+ }
+
+ pfmt[0].sizeimage =
+ get_output_size(pixmp->width, pixmp->height);
+ pfmt[0].bytesperline = 0;
+ pixmp->num_planes = 1;
+ } else if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
+ fmt_out = sess->fmt_out;
+ if (!vdec_supports_pixfmt_cap(fmt_out, pixmp->pixelformat))
+ pixmp->pixelformat = fmt_out->pixfmts_cap[0];
+
+ memset(pfmt[1].reserved, 0, sizeof(pfmt[1].reserved));
+ if (pixmp->pixelformat == V4L2_PIX_FMT_NV12M) {
+ pfmt[0].sizeimage =
+ get_output_size(pixmp->width, pixmp->height);
+ pfmt[0].bytesperline = ALIGN(pixmp->width, 64);
+
+ pfmt[1].sizeimage =
+ get_output_size(pixmp->width, pixmp->height) / 2;
+ pfmt[1].bytesperline = ALIGN(pixmp->width, 64);
+ pixmp->num_planes = 2;
+ } else if (pixmp->pixelformat == V4L2_PIX_FMT_YUV420M) {
+ pfmt[0].sizeimage =
+ get_output_size(pixmp->width, pixmp->height);
+ pfmt[0].bytesperline = ALIGN(pixmp->width, 64);
+
+ pfmt[1].sizeimage =
+ get_output_size(pixmp->width, pixmp->height) / 4;
+ pfmt[1].bytesperline = ALIGN(pixmp->width, 64) / 2;
+
+ pfmt[2].sizeimage =
+ get_output_size(pixmp->width, pixmp->height) / 4;
+ pfmt[2].bytesperline = ALIGN(pixmp->width, 64) / 2;
+ pixmp->num_planes = 3;
+ }
+ } else {
+ return NULL;
+ }
+
+ pixmp->width = clamp(pixmp->width, (u32)256, fmt_out->max_width);
+ pixmp->height = clamp(pixmp->height, (u32)144, fmt_out->max_height);
+
+ if (pixmp->field == V4L2_FIELD_ANY)
+ pixmp->field = V4L2_FIELD_NONE;
+
+ return fmt_out;
+}
+
+static int vdec_try_fmt(struct file *file, void *fh, struct v4l2_format *f)
+{
+ struct amvdec_session *sess =
+ container_of(file->private_data, struct amvdec_session, fh);
+
+ vdec_try_fmt_common(sess, sess->core->platform->num_formats, f);
+
+ return 0;
+}
+
+static int vdec_g_fmt(struct file *file, void *fh, struct v4l2_format *f)
+{
+ struct amvdec_session *sess =
+ container_of(file->private_data, struct amvdec_session, fh);
+ struct v4l2_pix_format_mplane *pixmp = &f->fmt.pix_mp;
+
+ if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
+ pixmp->pixelformat = sess->pixfmt_cap;
+ else if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
+ pixmp->pixelformat = sess->fmt_out->pixfmt;
+
+ if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
+ pixmp->width = sess->width;
+ pixmp->height = sess->height;
+ pixmp->colorspace = sess->colorspace;
+ pixmp->ycbcr_enc = sess->ycbcr_enc;
+ pixmp->quantization = sess->quantization;
+ pixmp->xfer_func = sess->xfer_func;
+ } else if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
+ pixmp->width = sess->width;
+ pixmp->height = sess->height;
+ }
+
+ vdec_try_fmt_common(sess, sess->core->platform->num_formats, f);
+
+ return 0;
+}
+
+static int vdec_s_fmt(struct file *file, void *fh, struct v4l2_format *f)
+{
+ struct amvdec_session *sess =
+ container_of(file->private_data, struct amvdec_session, fh);
+ struct v4l2_pix_format_mplane *pixmp = &f->fmt.pix_mp;
+ u32 num_formats = sess->core->platform->num_formats;
+ const struct amvdec_format *fmt_out;
+ struct v4l2_pix_format_mplane orig_pixmp;
+ struct v4l2_format format;
+ u32 pixfmt_out = 0, pixfmt_cap = 0;
+
+ orig_pixmp = *pixmp;
+
+ fmt_out = vdec_try_fmt_common(sess, num_formats, f);
+
+ if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
+ pixfmt_out = pixmp->pixelformat;
+ pixfmt_cap = sess->pixfmt_cap;
+ } else if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
+ pixfmt_cap = pixmp->pixelformat;
+ pixfmt_out = sess->fmt_out->pixfmt;
+ }
+
+ memset(&format, 0, sizeof(format));
+
+ format.type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
+ format.fmt.pix_mp.pixelformat = pixfmt_out;
+ format.fmt.pix_mp.width = orig_pixmp.width;
+ format.fmt.pix_mp.height = orig_pixmp.height;
+ vdec_try_fmt_common(sess, num_formats, &format);
+
+ if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
+ sess->width = format.fmt.pix_mp.width;
+ sess->height = format.fmt.pix_mp.height;
+ sess->colorspace = pixmp->colorspace;
+ sess->ycbcr_enc = pixmp->ycbcr_enc;
+ sess->quantization = pixmp->quantization;
+ sess->xfer_func = pixmp->xfer_func;
+ }
+
+ memset(&format, 0, sizeof(format));
+
+ format.type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
+ format.fmt.pix_mp.pixelformat = pixfmt_cap;
+ format.fmt.pix_mp.width = orig_pixmp.width;
+ format.fmt.pix_mp.height = orig_pixmp.height;
+ vdec_try_fmt_common(sess, num_formats, &format);
+
+ sess->width = format.fmt.pix_mp.width;
+ sess->height = format.fmt.pix_mp.height;
+
+ if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
+ sess->fmt_out = fmt_out;
+ else if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
+ sess->pixfmt_cap = format.fmt.pix_mp.pixelformat;
+
+ return 0;
+}
+
+static int vdec_enum_fmt(struct file *file, void *fh, struct v4l2_fmtdesc *f)
+{
+ struct amvdec_session *sess =
+ container_of(file->private_data, struct amvdec_session, fh);
+ const struct vdec_platform *platform = sess->core->platform;
+ const struct amvdec_format *fmt_out;
+
+ memset(f->reserved, 0, sizeof(f->reserved));
+
+ if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
+ if (f->index >= platform->num_formats)
+ return -EINVAL;
+
+ fmt_out = &platform->formats[f->index];
+ f->pixelformat = fmt_out->pixfmt;
+ } else if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
+ fmt_out = sess->fmt_out;
+ if (f->index >= 4 || !fmt_out->pixfmts_cap[f->index])
+ return -EINVAL;
+
+ f->pixelformat = fmt_out->pixfmts_cap[f->index];
+ } else {
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int vdec_enum_framesizes(struct file *file, void *fh,
+ struct v4l2_frmsizeenum *fsize)
+{
+ struct amvdec_session *sess =
+ container_of(file->private_data, struct amvdec_session, fh);
+ const struct amvdec_format *formats = sess->core->platform->formats;
+ const struct amvdec_format *fmt;
+ u32 num_formats = sess->core->platform->num_formats;
+
+ fmt = find_format(formats, num_formats, fsize->pixel_format);
+ if (!fmt || fsize->index)
+ return -EINVAL;
+
+ fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE;
+
+ fsize->stepwise.min_width = 256;
+ fsize->stepwise.max_width = fmt->max_width;
+ fsize->stepwise.step_width = 1;
+ fsize->stepwise.min_height = 144;
+ fsize->stepwise.max_height = fmt->max_height;
+ fsize->stepwise.step_height = 1;
+
+ return 0;
+}
+
+static int
+vdec_try_decoder_cmd(struct file *file, void *fh, struct v4l2_decoder_cmd *cmd)
+{
+ switch (cmd->cmd) {
+ case V4L2_DEC_CMD_STOP:
+ if (cmd->flags & V4L2_DEC_CMD_STOP_TO_BLACK)
+ return -EINVAL;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int
+vdec_decoder_cmd(struct file *file, void *fh, struct v4l2_decoder_cmd *cmd)
+{
+ struct amvdec_session *sess =
+ container_of(file->private_data, struct amvdec_session, fh);
+ struct amvdec_codec_ops *codec_ops = sess->fmt_out->codec_ops;
+ struct device *dev = sess->core->dev;
+ int ret;
+
+ ret = vdec_try_decoder_cmd(file, fh, cmd);
+ if (ret)
+ return ret;
+
+ if (!(sess->streamon_out & sess->streamon_cap))
+ return 0;
+
+ dev_dbg(dev, "Received V4L2_DEC_CMD_STOP\n");
+ sess->should_stop = 1;
+
+ vdec_wait_inactive(sess);
+
+ if (codec_ops->drain) {
+ codec_ops->drain(sess);
+ } else if (codec_ops->eos_sequence) {
+ u32 len;
+ const u8 *data = codec_ops->eos_sequence(&len);
+
+ esparser_queue_eos(sess->core, data, len);
+ }
+
+ return ret;
+}
+
+static int vdec_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, 2, NULL);
+ default:
+ return -EINVAL;
+ }
+}
+
+static int vdec_cropcap(struct file *file, void *fh,
+ struct v4l2_cropcap *crop)
+{
+ struct amvdec_session *sess =
+ container_of(file->private_data, struct amvdec_session, fh);
+
+ if (crop->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
+ return -EINVAL;
+
+ crop->pixelaspect = sess->pixelaspect;
+ return 0;
+}
+
+static const struct v4l2_ioctl_ops vdec_ioctl_ops = {
+ .vidioc_querycap = vdec_querycap,
+ .vidioc_enum_fmt_vid_cap_mplane = vdec_enum_fmt,
+ .vidioc_enum_fmt_vid_out_mplane = vdec_enum_fmt,
+ .vidioc_s_fmt_vid_cap_mplane = vdec_s_fmt,
+ .vidioc_s_fmt_vid_out_mplane = vdec_s_fmt,
+ .vidioc_g_fmt_vid_cap_mplane = vdec_g_fmt,
+ .vidioc_g_fmt_vid_out_mplane = vdec_g_fmt,
+ .vidioc_try_fmt_vid_cap_mplane = vdec_try_fmt,
+ .vidioc_try_fmt_vid_out_mplane = vdec_try_fmt,
+ .vidioc_reqbufs = v4l2_m2m_ioctl_reqbufs,
+ .vidioc_querybuf = v4l2_m2m_ioctl_querybuf,
+ .vidioc_prepare_buf = v4l2_m2m_ioctl_prepare_buf,
+ .vidioc_qbuf = v4l2_m2m_ioctl_qbuf,
+ .vidioc_expbuf = v4l2_m2m_ioctl_expbuf,
+ .vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf,
+ .vidioc_streamon = v4l2_m2m_ioctl_streamon,
+ .vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
+ .vidioc_enum_framesizes = vdec_enum_framesizes,
+ .vidioc_subscribe_event = vdec_subscribe_event,
+ .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
+ .vidioc_try_decoder_cmd = vdec_try_decoder_cmd,
+ .vidioc_decoder_cmd = vdec_decoder_cmd,
+ .vidioc_cropcap = vdec_cropcap,
+};
+
+static int m2m_queue_init(void *priv, struct vb2_queue *src_vq,
+ struct vb2_queue *dst_vq)
+{
+ struct amvdec_session *sess = priv;
+ int ret;
+
+ src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
+ src_vq->io_modes = VB2_MMAP | VB2_DMABUF;
+ src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
+ src_vq->ops = &vdec_vb2_ops;
+ src_vq->mem_ops = &vb2_dma_contig_memops;
+ src_vq->drv_priv = sess;
+ src_vq->buf_struct_size = sizeof(struct dummy_buf);
+ src_vq->min_buffers_needed = 1;
+ src_vq->dev = sess->core->dev;
+ src_vq->lock = &sess->lock;
+ 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->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
+ dst_vq->ops = &vdec_vb2_ops;
+ dst_vq->mem_ops = &vb2_dma_contig_memops;
+ dst_vq->drv_priv = sess;
+ dst_vq->buf_struct_size = sizeof(struct dummy_buf);
+ dst_vq->min_buffers_needed = 1;
+ dst_vq->dev = sess->core->dev;
+ dst_vq->lock = &sess->lock;
+ ret = vb2_queue_init(dst_vq);
+ if (ret) {
+ vb2_queue_release(src_vq);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int vdec_open(struct file *file)
+{
+ struct amvdec_core *core = video_drvdata(file);
+ struct device *dev = core->dev;
+ const struct amvdec_format *formats = core->platform->formats;
+ struct amvdec_session *sess;
+ int ret;
+
+ sess = kzalloc(sizeof(*sess), GFP_KERNEL);
+ if (!sess)
+ return -ENOMEM;
+
+ sess->core = core;
+
+ sess->m2m_dev = v4l2_m2m_init(&vdec_m2m_ops);
+ if (IS_ERR(sess->m2m_dev)) {
+ dev_err(dev, "Fail to v4l2_m2m_init\n");
+ ret = PTR_ERR(sess->m2m_dev);
+ goto err_free_sess;
+ }
+
+ sess->m2m_ctx = v4l2_m2m_ctx_init(sess->m2m_dev, sess, m2m_queue_init);
+ if (IS_ERR(sess->m2m_ctx)) {
+ dev_err(dev, "Fail to v4l2_m2m_ctx_init\n");
+ ret = PTR_ERR(sess->m2m_ctx);
+ goto err_m2m_release;
+ }
+
+ sess->pixfmt_cap = formats[0].pixfmts_cap[0];
+ sess->fmt_out = &formats[0];
+ sess->width = 1280;
+ sess->height = 720;
+ sess->pixelaspect.numerator = 1;
+ sess->pixelaspect.denominator = 1;
+
+ INIT_LIST_HEAD(&sess->timestamps);
+ INIT_LIST_HEAD(&sess->bufs_recycle);
+ INIT_WORK(&sess->esparser_queue_work, esparser_queue_all_src);
+ mutex_init(&sess->lock);
+ mutex_init(&sess->bufs_recycle_lock);
+ spin_lock_init(&sess->ts_spinlock);
+
+ v4l2_fh_init(&sess->fh, core->vdev_dec);
+ v4l2_fh_add(&sess->fh);
+ sess->fh.m2m_ctx = sess->m2m_ctx;
+ file->private_data = &sess->fh;
+
+ return 0;
+
+err_m2m_release:
+ v4l2_m2m_release(sess->m2m_dev);
+err_free_sess:
+ kfree(sess);
+ return ret;
+}
+
+static int vdec_close(struct file *file)
+{
+ struct amvdec_session *sess =
+ container_of(file->private_data, struct amvdec_session, fh);
+
+ v4l2_m2m_ctx_release(sess->m2m_ctx);
+ v4l2_m2m_release(sess->m2m_dev);
+ v4l2_fh_del(&sess->fh);
+ v4l2_fh_exit(&sess->fh);
+
+ mutex_destroy(&sess->lock);
+ mutex_destroy(&sess->bufs_recycle_lock);
+
+ kfree(sess);
+
+ return 0;
+}
+
+static const struct v4l2_file_operations vdec_fops = {
+ .owner = THIS_MODULE,
+ .open = vdec_open,
+ .release = vdec_close,
+ .unlocked_ioctl = video_ioctl2,
+ .poll = v4l2_m2m_fop_poll,
+ .mmap = v4l2_m2m_fop_mmap,
+};
+
+static irqreturn_t vdec_isr(int irq, void *data)
+{
+ struct amvdec_core *core = data;
+ struct amvdec_session *sess = core->cur_sess;
+
+ sess->last_irq_jiffies = get_jiffies_64();
+
+ return sess->fmt_out->codec_ops->isr(sess);
+}
+
+static irqreturn_t vdec_threaded_isr(int irq, void *data)
+{
+ struct amvdec_core *core = data;
+ struct amvdec_session *sess = core->cur_sess;
+
+ return sess->fmt_out->codec_ops->threaded_isr(sess);
+}
+
+static const struct of_device_id vdec_dt_match[] = {
+ { .compatible = "amlogic,gxbb-vdec",
+ .data = &vdec_platform_gxbb },
+ { .compatible = "amlogic,gxm-vdec",
+ .data = &vdec_platform_gxm },
+ { .compatible = "amlogic,gxl-vdec",
+ .data = &vdec_platform_gxl },
+ {}
+};
+MODULE_DEVICE_TABLE(of, vdec_dt_match);
+
+static int vdec_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct video_device *vdev;
+ struct amvdec_core *core;
+ struct resource *r;
+ const struct of_device_id *of_id;
+ int irq;
+ int ret;
+
+ core = devm_kzalloc(dev, sizeof(*core), GFP_KERNEL);
+ if (!core)
+ return -ENOMEM;
+
+ core->dev = dev;
+ platform_set_drvdata(pdev, core);
+
+ r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "dos");
+ core->dos_base = devm_ioremap_resource(dev, r);
+ if (IS_ERR(core->dos_base)) {
+ dev_err(dev, "Couldn't remap DOS memory\n");
+ return PTR_ERR(core->dos_base);
+ }
+
+ r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "esparser");
+ core->esparser_base = devm_ioremap_resource(dev, r);
+ if (IS_ERR(core->esparser_base)) {
+ dev_err(dev, "Couldn't remap ESPARSER memory\n");
+ return PTR_ERR(core->esparser_base);
+ }
+
+ core->regmap_ao = syscon_regmap_lookup_by_phandle(dev->of_node,
+ "amlogic,ao-sysctrl");
+ if (IS_ERR(core->regmap_ao)) {
+ dev_err(dev, "Couldn't regmap AO sysctrl\n");
+ return PTR_ERR(core->regmap_ao);
+ }
+
+ core->canvas = meson_canvas_get(dev);
+ if (!core->canvas)
+ return PTR_ERR(core->canvas);
+
+ core->dos_parser_clk = devm_clk_get(dev, "dos_parser");
+ if (IS_ERR(core->dos_parser_clk))
+ return -EPROBE_DEFER;
+
+ core->dos_clk = devm_clk_get(dev, "dos");
+ if (IS_ERR(core->dos_clk))
+ return -EPROBE_DEFER;
+
+ core->vdec_1_clk = devm_clk_get(dev, "vdec_1");
+ if (IS_ERR(core->vdec_1_clk))
+ return -EPROBE_DEFER;
+
+ core->vdec_hevc_clk = devm_clk_get(dev, "vdec_hevc");
+ if (IS_ERR(core->vdec_hevc_clk))
+ return -EPROBE_DEFER;
+
+ irq = platform_get_irq_byname(pdev, "vdec");
+ if (irq < 0)
+ return irq;
+
+ ret = devm_request_threaded_irq(core->dev, irq, vdec_isr,
+ vdec_threaded_isr, IRQF_ONESHOT,
+ "vdec", core);
+ if (ret)
+ return ret;
+
+ ret = esparser_init(pdev, core);
+ if (ret)
+ return ret;
+
+ ret = v4l2_device_register(dev, &core->v4l2_dev);
+ if (ret) {
+ dev_err(dev, "Couldn't register v4l2 device\n");
+ return -ENOMEM;
+ }
+
+ vdev = video_device_alloc();
+ if (!vdev) {
+ ret = -ENOMEM;
+ goto err_vdev_release;
+ }
+
+ of_id = of_match_node(vdec_dt_match, dev->of_node);
+ core->platform = of_id->data;
+ core->vdev_dec = vdev;
+ core->dev_dec = dev;
+ mutex_init(&core->lock);
+
+ strscpy(vdev->name, "meson-video-decoder", sizeof(vdev->name));
+ vdev->release = video_device_release;
+ vdev->fops = &vdec_fops;
+ vdev->ioctl_ops = &vdec_ioctl_ops;
+ vdev->vfl_dir = VFL_DIR_M2M;
+ vdev->v4l2_dev = &core->v4l2_dev;
+ vdev->lock = &core->lock;
+ vdev->device_caps = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_STREAMING;
+
+ video_set_drvdata(vdev, core);
+
+ ret = video_register_device(vdev, VFL_TYPE_GRABBER, -1);
+ if (ret) {
+ dev_err(dev, "Failed registering video device\n");
+ goto err_vdev_release;
+ }
+
+ return 0;
+
+err_vdev_release:
+ video_device_release(vdev);
+ return ret;
+}
+
+static int vdec_remove(struct platform_device *pdev)
+{
+ struct amvdec_core *core = platform_get_drvdata(pdev);
+
+ video_unregister_device(core->vdev_dec);
+
+ return 0;
+}
+
+static struct platform_driver meson_vdec_driver = {
+ .probe = vdec_probe,
+ .remove = vdec_remove,
+ .driver = {
+ .name = "meson-vdec",
+ .of_match_table = vdec_dt_match,
+ },
+};
+module_platform_driver(meson_vdec_driver);
+
+MODULE_DESCRIPTION("Meson video decoder driver for GXBB/GXL/GXM");
+MODULE_AUTHOR("Maxime Jourdan <mjourdan@baylibre.com>");
+MODULE_LICENSE("GPL");
new file mode 100644
@@ -0,0 +1,251 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (C) 2018 BayLibre, SAS
+ * Author: Maxime Jourdan <mjourdan@baylibre.com>
+ */
+
+#ifndef __MESON_VDEC_CORE_H_
+#define __MESON_VDEC_CORE_H_
+
+#include <linux/regmap.h>
+#include <linux/list.h>
+#include <media/videobuf2-v4l2.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-device.h>
+#include <linux/soc/amlogic/meson-canvas.h>
+
+#include "vdec_platform.h"
+
+/* 32 buffers in 3-plane YUV420 */
+#define MAX_CANVAS (32 * 3)
+
+struct amvdec_buffer {
+ struct list_head list;
+ struct vb2_buffer *vb;
+};
+
+/**
+ * struct amvdec_timestamp - stores a src timestamp along with a VIFIFO offset
+ *
+ * @list: used to make lists out of this struct
+ * @ts: timestamp
+ * @offset: offset in the VIFIFO where the associated packet was written
+ */
+struct amvdec_timestamp {
+ struct list_head list;
+ u64 ts;
+ u32 offset;
+};
+
+struct amvdec_session;
+
+/**
+ * struct amvdec_core - device parameters, singleton
+ *
+ * @dos_base: DOS memory base address
+ * @esparser_base: PARSER memory base address
+ * @regmap_ao: regmap for the AO bus
+ * @dev: core device
+ * @dev_dec: decoder device
+ * @platform: platform-specific data
+ * @canvas: canvas provider reference
+ * @dos_parser_clk: DOS_PARSER clock
+ * @dos_clk: DOS clock
+ * @vdec_1_clk: VDEC_1 clock
+ * @vdec_hevc_clk: VDEC_HEVC clock
+ * @esparser_reset: RESET for the PARSER
+ * @vdec_dec: video device for the decoder
+ * @v4l2_dev: v4l2 device
+ * @cur_sess: current decoding session
+ * @lock: lock for this structure
+ */
+struct amvdec_core {
+ void __iomem *dos_base;
+ void __iomem *esparser_base;
+ struct regmap *regmap_ao;
+
+ struct device *dev;
+ struct device *dev_dec;
+ const struct vdec_platform *platform;
+
+ struct meson_canvas *canvas;
+
+ struct clk *dos_parser_clk;
+ struct clk *dos_clk;
+ struct clk *vdec_1_clk;
+ struct clk *vdec_hevc_clk;
+
+ struct reset_control *esparser_reset;
+
+ struct video_device *vdev_dec;
+ struct v4l2_device v4l2_dev;
+
+ struct amvdec_session *cur_sess;
+ struct mutex lock;
+};
+
+/**
+ * struct amvdec_ops - vdec operations
+ *
+ * @start: mandatory call when the vdec needs to initialize
+ * @stop: mandatory call when the vdec needs to stop
+ * @conf_esparser: mandatory call to let the vdec configure the ESPARSER
+ * @vififo_level: mandatory call to get the current amount of data
+ * in the VIFIFO
+ * @use_offsets: mandatory call. Returns 1 if the VDEC supports vififo offsets
+ */
+struct amvdec_ops {
+ int (*start)(struct amvdec_session *sess);
+ int (*stop)(struct amvdec_session *sess);
+ void (*conf_esparser)(struct amvdec_session *sess);
+ u32 (*vififo_level)(struct amvdec_session *sess);
+};
+
+/**
+ * struct amvdec_codec_ops - codec operations
+ *
+ * @start: mandatory call when the codec needs to initialize
+ * @stop: mandatory call when the codec needs to stop
+ * @load_extended_firmware: optional call to load additional firmware bits
+ * @num_pending_bufs: optional call to get the number of dst buffers on hold
+ * @can_recycle: optional call to know if the codec is ready to recycle
+ * a dst buffer
+ * @recycle: optional call to tell the codec to recycle a dst buffer. Must go
+ * in pair with @can_recycle
+ * @drain: optional call if the codec has a custom way of draining
+ * @eos_sequence: optional call to get an end sequence to send to esparser
+ * for flush. Mutually exclusive with @drain.
+ * @isr: mandatory call when the ISR triggers
+ * @threaded_isr: mandatory call for the threaded ISR
+ */
+struct amvdec_codec_ops {
+ int (*start)(struct amvdec_session *sess);
+ int (*stop)(struct amvdec_session *sess);
+ int (*load_extended_firmware)(struct amvdec_session *sess,
+ const u8 *data, u32 len);
+ u32 (*num_pending_bufs)(struct amvdec_session *sess);
+ int (*can_recycle)(struct amvdec_core *core);
+ void (*recycle)(struct amvdec_core *core, u32 buf_idx);
+ void (*drain)(struct amvdec_session *sess);
+ const u8 * (*eos_sequence)(u32 *len);
+ irqreturn_t (*isr)(struct amvdec_session *sess);
+ irqreturn_t (*threaded_isr)(struct amvdec_session *sess);
+};
+
+/**
+ * struct amvdec_format - describes one of the OUTPUT (src) format supported
+ *
+ * @pixfmt: V4L2 pixel format
+ * @min_buffers: minimum amount of CAPTURE (dst) buffers
+ * @max_buffers: maximum amount of CAPTURE (dst) buffers
+ * @max_width: maximum picture width supported
+ * @max_height: maximum picture height supported
+ * @vdec_ops: the VDEC operations that support this format
+ * @codec_ops: the codec operations that support this format
+ * @firmware_path: Path to the firmware that supports this format
+ * @pixfmts_cap: list of CAPTURE pixel formats available with pixfmt
+ */
+struct amvdec_format {
+ u32 pixfmt;
+ u32 min_buffers;
+ u32 max_buffers;
+ u32 max_width;
+ u32 max_height;
+
+ struct amvdec_ops *vdec_ops;
+ struct amvdec_codec_ops *codec_ops;
+
+ char *firmware_path;
+ u32 pixfmts_cap[4];
+};
+
+/**
+ * struct amvdec_session - decoding session parameters
+ *
+ * @core: reference to the vdec core struct
+ * @fh: v4l2 file handle
+ * @m2m_dev: v4l2 m2m device
+ * @m2m_ctx: v4l2 m2m context
+ * @lock: session lock
+ * @fmt_out: vdec pixel format for the OUTPUT queue
+ * @pixfmt_cap: V4L2 pixel format for the CAPTURE queue
+ * @width: current picture width
+ * @height: current picture height
+ * @colorspace: current colorspace
+ * @ycbcr_enc: current ycbcr_enc
+ * @quantization: current quantization
+ * @xfer_func: current transfer function
+ * @pixelaspect: Pixel Aspect Ratio reported by the decoder
+ * @esparser_queued_bufs: number of buffers currently queued into ESPARSER
+ * @esparser_queue_work: work struct for the ESPARSER to process src buffers
+ * @streamon_cap: stream on flag for capture queue
+ * @streamon_out: stream on flag for output queue
+ * @sequence_cap: capture sequence counter
+ * @should_stop: flag set if userspace signaled EOS via command
+ * or empty buffer
+ * @keyframe_found: flag set once a keyframe has been parsed
+ * @canvas_alloc: array of all the canvas IDs allocated
+ * @canvas_num: number of canvas IDs allocated
+ * @vififo_vaddr: virtual address for the VIFIFO
+ * @vififo_paddr: physical address for the VIFIFO
+ * @vififo_size: size of the VIFIFO dma alloc
+ * @bufs_recycle: list of buffers that need to be recycled
+ * @bufs_recycle_lock: lock for the bufs_recycle list
+ * @recycle_thread: task struct for the recycling thread
+ * @timestamps: chronological list of src timestamps
+ * @ts_spinlock: spinlock for the timestamps list
+ * @last_irq_jiffies: tracks last time the vdec triggered an IRQ
+ * @priv: codec private data
+ */
+struct amvdec_session {
+ struct amvdec_core *core;
+
+ struct v4l2_fh fh;
+ struct v4l2_m2m_dev *m2m_dev;
+ struct v4l2_m2m_ctx *m2m_ctx;
+ struct mutex lock;
+
+ const struct amvdec_format *fmt_out;
+ u32 pixfmt_cap;
+
+ u32 width;
+ u32 height;
+ u32 colorspace;
+ u8 ycbcr_enc;
+ u8 quantization;
+ u8 xfer_func;
+
+ struct v4l2_fract pixelaspect;
+
+ atomic_t esparser_queued_bufs;
+ struct work_struct esparser_queue_work;
+
+ unsigned int streamon_cap, streamon_out;
+ unsigned int sequence_cap;
+ unsigned int should_stop;
+ unsigned int keyframe_found;
+
+ u8 canvas_alloc[MAX_CANVAS];
+ u32 canvas_num;
+
+ void *vififo_vaddr;
+ dma_addr_t vififo_paddr;
+ u32 vififo_size;
+
+ struct list_head bufs_recycle;
+ struct mutex bufs_recycle_lock;
+ struct task_struct *recycle_thread;
+
+ struct list_head timestamps;
+ spinlock_t ts_spinlock;
+
+ u64 last_irq_jiffies;
+ u32 last_offset;
+ u32 wrap_count;
+
+ void *priv;
+};
+
+u32 amvdec_get_output_size(struct amvdec_session *sess);
+
+#endif
new file mode 100644
@@ -0,0 +1,231 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2018 BayLibre, SAS
+ * Author: Maxime Jourdan <mjourdan@baylibre.com>
+ *
+ * VDEC_1 is a video decoding block that allows decoding of
+ * MPEG 1/2/4, H.263, H.264, MJPEG, VC1
+ */
+
+#include <linux/firmware.h>
+#include <linux/clk.h>
+
+#include "vdec_1.h"
+#include "vdec_helpers.h"
+#include "dos_regs.h"
+
+/* AO Registers */
+#define AO_RTI_GEN_PWR_SLEEP0 0xe8
+#define AO_RTI_GEN_PWR_ISO0 0xec
+ #define GEN_PWR_VDEC_1 (BIT(3) | BIT(2))
+
+#define MC_SIZE (4096 * 4)
+
+static int
+vdec_1_load_firmware(struct amvdec_session *sess, const char *fwname)
+{
+ const struct firmware *fw;
+ struct amvdec_core *core = sess->core;
+ struct device *dev = core->dev_dec;
+ struct amvdec_codec_ops *codec_ops = sess->fmt_out->codec_ops;
+ static void *mc_addr;
+ static dma_addr_t mc_addr_map;
+ int ret;
+ u32 i = 1000;
+
+ ret = request_firmware(&fw, fwname, dev);
+ if (ret < 0)
+ return -EINVAL;
+
+ if (fw->size < MC_SIZE) {
+ dev_err(dev, "Firmware size %zu is too small. Expected %u.\n",
+ fw->size, MC_SIZE);
+ ret = -EINVAL;
+ goto release_firmware;
+ }
+
+ mc_addr = dma_alloc_coherent(core->dev, MC_SIZE,
+ &mc_addr_map, GFP_KERNEL);
+ if (!mc_addr) {
+ dev_err(dev,
+ "Failed allocating memory for firmware loading\n");
+ ret = -ENOMEM;
+ goto release_firmware;
+ }
+
+ memcpy(mc_addr, fw->data, MC_SIZE);
+
+ amvdec_write_dos(core, MPSR, 0);
+ amvdec_write_dos(core, CPSR, 0);
+
+ amvdec_clear_dos_bits(core, MDEC_PIC_DC_CTRL, BIT(31));
+
+ amvdec_write_dos(core, IMEM_DMA_ADR, mc_addr_map);
+ amvdec_write_dos(core, IMEM_DMA_COUNT, MC_SIZE / 4);
+ amvdec_write_dos(core, IMEM_DMA_CTRL, (0x8000 | (7 << 16)));
+
+ while (--i && amvdec_read_dos(core, IMEM_DMA_CTRL) & 0x8000) { }
+
+ if (i == 0) {
+ dev_err(dev, "Firmware load fail (DMA hang?)\n");
+ ret = -EINVAL;
+ goto free_mc;
+ }
+
+ if (codec_ops->load_extended_firmware)
+ ret = codec_ops->load_extended_firmware(sess,
+ fw->data + MC_SIZE,
+ fw->size - MC_SIZE);
+
+free_mc:
+ dma_free_coherent(core->dev, MC_SIZE, mc_addr, mc_addr_map);
+release_firmware:
+ release_firmware(fw);
+ return ret;
+}
+
+int vdec_1_stbuf_power_up(struct amvdec_session *sess)
+{
+ struct amvdec_core *core = sess->core;
+
+ amvdec_write_dos(core, VLD_MEM_VIFIFO_CONTROL, 0);
+ amvdec_write_dos(core, VLD_MEM_VIFIFO_WRAP_COUNT, 0);
+ amvdec_write_dos(core, POWER_CTL_VLD, BIT(4));
+
+ amvdec_write_dos(core, VLD_MEM_VIFIFO_START_PTR, sess->vififo_paddr);
+ amvdec_write_dos(core, VLD_MEM_VIFIFO_CURR_PTR, sess->vififo_paddr);
+ amvdec_write_dos(core, VLD_MEM_VIFIFO_END_PTR,
+ sess->vififo_paddr + sess->vififo_size - 8);
+
+ amvdec_write_dos_bits(core, VLD_MEM_VIFIFO_CONTROL, 1);
+ amvdec_clear_dos_bits(core, VLD_MEM_VIFIFO_CONTROL, 1);
+
+ amvdec_write_dos(core, VLD_MEM_VIFIFO_BUF_CNTL, MEM_BUFCTRL_MANUAL);
+ amvdec_write_dos(core, VLD_MEM_VIFIFO_WP, sess->vififo_paddr);
+
+ amvdec_write_dos_bits(core, VLD_MEM_VIFIFO_BUF_CNTL, 1);
+ amvdec_clear_dos_bits(core, VLD_MEM_VIFIFO_BUF_CNTL, 1);
+
+ amvdec_write_dos_bits(core, VLD_MEM_VIFIFO_CONTROL,
+ (0x11 << MEM_FIFO_CNT_BIT) | MEM_FILL_ON_LEVEL |
+ MEM_CTRL_FILL_EN | MEM_CTRL_EMPTY_EN);
+
+ return 0;
+}
+
+static void vdec_1_conf_esparser(struct amvdec_session *sess)
+{
+ struct amvdec_core *core = sess->core;
+
+ /* VDEC_1 specific ESPARSER stuff */
+ amvdec_write_dos(core, DOS_GEN_CTRL0, 0);
+ amvdec_write_dos(core, VLD_MEM_VIFIFO_BUF_CNTL, 1);
+ amvdec_clear_dos_bits(core, VLD_MEM_VIFIFO_BUF_CNTL, 1);
+}
+
+static u32 vdec_1_vififo_level(struct amvdec_session *sess)
+{
+ struct amvdec_core *core = sess->core;
+
+ return amvdec_read_dos(core, VLD_MEM_VIFIFO_LEVEL);
+}
+
+static int vdec_1_stop(struct amvdec_session *sess)
+{
+ struct amvdec_core *core = sess->core;
+ struct amvdec_codec_ops *codec_ops = sess->fmt_out->codec_ops;
+
+ amvdec_write_dos(core, MPSR, 0);
+ amvdec_write_dos(core, CPSR, 0);
+ amvdec_write_dos(core, ASSIST_MBOX1_MASK, 0);
+
+ amvdec_write_dos(core, DOS_SW_RESET0, BIT(12) | BIT(11));
+ amvdec_write_dos(core, DOS_SW_RESET0, 0);
+ amvdec_read_dos(core, DOS_SW_RESET0);
+
+ /* enable vdec1 isolation */
+ regmap_write(core->regmap_ao, AO_RTI_GEN_PWR_ISO0, 0xc0);
+ /* power off vdec1 memories */
+ amvdec_write_dos(core, DOS_MEM_PD_VDEC, 0xffffffff);
+ /* power off vdec1 */
+ regmap_update_bits(core->regmap_ao, AO_RTI_GEN_PWR_SLEEP0,
+ GEN_PWR_VDEC_1, GEN_PWR_VDEC_1);
+
+ clk_disable_unprepare(core->vdec_1_clk);
+
+ if (sess->priv)
+ codec_ops->stop(sess);
+
+ return 0;
+}
+
+static int vdec_1_start(struct amvdec_session *sess)
+{
+ int ret;
+ struct amvdec_core *core = sess->core;
+ struct amvdec_codec_ops *codec_ops = sess->fmt_out->codec_ops;
+
+ /* Configure the vdec clk to the maximum available */
+ clk_set_rate(core->vdec_1_clk, 666666666);
+ ret = clk_prepare_enable(core->vdec_1_clk);
+ if (ret)
+ return ret;
+
+ regmap_update_bits(core->regmap_ao, AO_RTI_GEN_PWR_SLEEP0,
+ GEN_PWR_VDEC_1, 0);
+ udelay(10);
+
+ /* Reset VDEC1 */
+ amvdec_write_dos(core, DOS_SW_RESET0, 0xfffffffc);
+ amvdec_write_dos(core, DOS_SW_RESET0, 0x00000000);
+
+ amvdec_write_dos(core, DOS_GCLK_EN0, 0x3ff);
+
+ /* enable VDEC Memories */
+ amvdec_write_dos(core, DOS_MEM_PD_VDEC, 0);
+ /* Remove VDEC1 Isolation */
+ regmap_write(core->regmap_ao, AO_RTI_GEN_PWR_ISO0, 0);
+ /* Reset DOS top registers */
+ amvdec_write_dos(core, DOS_VDEC_MCRCC_STALL_CTRL, 0);
+
+ amvdec_write_dos(core, GCLK_EN, 0x3ff);
+ amvdec_clear_dos_bits(core, MDEC_PIC_DC_CTRL, BIT(31));
+
+ vdec_1_stbuf_power_up(sess);
+
+ ret = vdec_1_load_firmware(sess, sess->fmt_out->firmware_path);
+ if (ret)
+ goto stop;
+
+ ret = codec_ops->start(sess);
+ if (ret)
+ goto stop;
+
+ /* Enable IRQ */
+ amvdec_write_dos(core, ASSIST_MBOX1_CLR_REG, 1);
+ amvdec_write_dos(core, ASSIST_MBOX1_MASK, 1);
+
+ /* Enable 2-plane output */
+ if (sess->pixfmt_cap == V4L2_PIX_FMT_NV12M)
+ amvdec_write_dos_bits(core, MDEC_PIC_DC_CTRL, BIT(17));
+ else
+ amvdec_clear_dos_bits(core, MDEC_PIC_DC_CTRL, BIT(17));
+
+ /* Enable firmware processor */
+ amvdec_write_dos(core, MPSR, 1);
+ /* Let the firmware settle */
+ udelay(10);
+
+ return 0;
+
+stop:
+ vdec_1_stop(sess);
+ return ret;
+}
+
+struct amvdec_ops vdec_1_ops = {
+ .start = vdec_1_start,
+ .stop = vdec_1_stop,
+ .conf_esparser = vdec_1_conf_esparser,
+ .vififo_level = vdec_1_vififo_level,
+};
new file mode 100644
@@ -0,0 +1,14 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (C) 2018 BayLibre, SAS
+ * Author: Maxime Jourdan <mjourdan@baylibre.com>
+ */
+
+#ifndef __MESON_VDEC_VDEC_1_H_
+#define __MESON_VDEC_VDEC_1_H_
+
+#include "vdec.h"
+
+extern struct amvdec_ops vdec_1_ops;
+
+#endif
new file mode 100644
@@ -0,0 +1,412 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2018 BayLibre, SAS
+ * Author: Maxime Jourdan <mjourdan@baylibre.com>
+ */
+
+#include <linux/gcd.h>
+#include <media/v4l2-mem2mem.h>
+#include <media/v4l2-event.h>
+#include <media/videobuf2-dma-contig.h>
+
+#include "vdec_helpers.h"
+
+#define NUM_CANVAS_NV12 2
+#define NUM_CANVAS_YUV420 3
+
+u32 amvdec_read_dos(struct amvdec_core *core, u32 reg)
+{
+ return readl_relaxed(core->dos_base + reg);
+}
+EXPORT_SYMBOL_GPL(amvdec_read_dos);
+
+void amvdec_write_dos(struct amvdec_core *core, u32 reg, u32 val)
+{
+ writel_relaxed(val, core->dos_base + reg);
+}
+EXPORT_SYMBOL_GPL(amvdec_write_dos);
+
+void amvdec_write_dos_bits(struct amvdec_core *core, u32 reg, u32 val)
+{
+ amvdec_write_dos(core, reg, amvdec_read_dos(core, reg) | val);
+}
+EXPORT_SYMBOL_GPL(amvdec_write_dos_bits);
+
+void amvdec_clear_dos_bits(struct amvdec_core *core, u32 reg, u32 val)
+{
+ amvdec_write_dos(core, reg, amvdec_read_dos(core, reg) & ~val);
+}
+EXPORT_SYMBOL_GPL(amvdec_clear_dos_bits);
+
+u32 amvdec_read_parser(struct amvdec_core *core, u32 reg)
+{
+ return readl_relaxed(core->esparser_base + reg);
+}
+EXPORT_SYMBOL_GPL(amvdec_read_parser);
+
+void amvdec_write_parser(struct amvdec_core *core, u32 reg, u32 val)
+{
+ writel_relaxed(val, core->esparser_base + reg);
+}
+EXPORT_SYMBOL_GPL(amvdec_write_parser);
+
+static int canvas_alloc(struct amvdec_session *sess, u8 *canvas_id)
+{
+ int ret;
+
+ if (sess->canvas_num >= MAX_CANVAS) {
+ dev_err(sess->core->dev, "Reached max number of canvas\n");
+ return -ENOMEM;
+ }
+
+ ret = meson_canvas_alloc(sess->core->canvas, canvas_id);
+ if (ret)
+ return ret;
+
+ sess->canvas_alloc[sess->canvas_num++] = *canvas_id;
+ return 0;
+}
+
+static int set_canvas_yuv420m(struct amvdec_session *sess,
+ struct vb2_buffer *vb, u32 width,
+ u32 height, u32 reg)
+{
+ struct amvdec_core *core = sess->core;
+ u8 canvas_id[NUM_CANVAS_YUV420]; /* Y U V */
+ dma_addr_t buf_paddr[NUM_CANVAS_YUV420]; /* Y U V */
+ int ret, i;
+
+ for (i = 0; i < NUM_CANVAS_YUV420; ++i) {
+ ret = canvas_alloc(sess, &canvas_id[i]);
+ if (ret)
+ return ret;
+
+ buf_paddr[i] =
+ vb2_dma_contig_plane_dma_addr(vb, i);
+ }
+
+ /* Y plane */
+ meson_canvas_config(core->canvas, canvas_id[0], buf_paddr[0],
+ width, height, MESON_CANVAS_WRAP_NONE,
+ MESON_CANVAS_BLKMODE_LINEAR,
+ MESON_CANVAS_ENDIAN_SWAP64);
+
+ /* U plane */
+ meson_canvas_config(core->canvas, canvas_id[1], buf_paddr[1],
+ width / 2, height / 2, MESON_CANVAS_WRAP_NONE,
+ MESON_CANVAS_BLKMODE_LINEAR,
+ MESON_CANVAS_ENDIAN_SWAP64);
+
+ /* V plane */
+ meson_canvas_config(core->canvas, canvas_id[2], buf_paddr[2],
+ width / 2, height / 2, MESON_CANVAS_WRAP_NONE,
+ MESON_CANVAS_BLKMODE_LINEAR,
+ MESON_CANVAS_ENDIAN_SWAP64);
+
+ amvdec_write_dos(core, reg,
+ ((canvas_id[2]) << 16) |
+ ((canvas_id[1]) << 8) |
+ (canvas_id[0]));
+
+ return 0;
+}
+
+static int set_canvas_nv12m(struct amvdec_session *sess,
+ struct vb2_buffer *vb, u32 width,
+ u32 height, u32 reg)
+{
+ struct amvdec_core *core = sess->core;
+ u8 canvas_id[NUM_CANVAS_NV12]; /* Y U/V */
+ dma_addr_t buf_paddr[NUM_CANVAS_NV12]; /* Y U/V */
+ int ret, i;
+
+ for (i = 0; i < NUM_CANVAS_NV12; ++i) {
+ ret = canvas_alloc(sess, &canvas_id[i]);
+ if (ret)
+ return ret;
+
+ buf_paddr[i] =
+ vb2_dma_contig_plane_dma_addr(vb, i);
+ }
+
+ /* Y plane */
+ meson_canvas_config(core->canvas, canvas_id[0], buf_paddr[0],
+ width, height, MESON_CANVAS_WRAP_NONE,
+ MESON_CANVAS_BLKMODE_LINEAR,
+ MESON_CANVAS_ENDIAN_SWAP64);
+
+ /* U/V plane */
+ meson_canvas_config(core->canvas, canvas_id[1], buf_paddr[1],
+ width, height / 2, MESON_CANVAS_WRAP_NONE,
+ MESON_CANVAS_BLKMODE_LINEAR,
+ MESON_CANVAS_ENDIAN_SWAP64);
+
+ amvdec_write_dos(core, reg,
+ ((canvas_id[1]) << 16) |
+ ((canvas_id[1]) << 8) |
+ (canvas_id[0]));
+
+ return 0;
+}
+
+int amvdec_set_canvases(struct amvdec_session *sess,
+ u32 reg_base[], u32 reg_num[])
+{
+ struct v4l2_m2m_buffer *buf;
+ u32 pixfmt = sess->pixfmt_cap;
+ u32 width = ALIGN(sess->width, 64);
+ u32 height = ALIGN(sess->height, 64);
+ u32 reg_cur = reg_base[0];
+ u32 reg_num_cur = 0;
+ u32 reg_base_cur = 0;
+ int ret;
+
+ v4l2_m2m_for_each_dst_buf(sess->m2m_ctx, buf) {
+ if (!reg_base[reg_base_cur])
+ return -EINVAL;
+
+ reg_cur = reg_base[reg_base_cur] + reg_num_cur * 4;
+
+ switch (pixfmt) {
+ case V4L2_PIX_FMT_NV12M:
+ ret = set_canvas_nv12m(sess, &buf->vb.vb2_buf, width,
+ height, reg_cur);
+ if (ret)
+ return ret;
+ break;
+ case V4L2_PIX_FMT_YUV420M:
+ ret = set_canvas_yuv420m(sess, &buf->vb.vb2_buf, width,
+ height, reg_cur);
+ if (ret)
+ return ret;
+ break;
+ default:
+ dev_err(sess->core->dev, "Unsupported pixfmt %08X\n",
+ pixfmt);
+ return -EINVAL;
+ };
+
+ reg_num_cur++;
+ if (reg_num_cur >= reg_num[reg_base_cur]) {
+ reg_base_cur++;
+ reg_num_cur = 0;
+ }
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(amvdec_set_canvases);
+
+void amvdec_add_ts_reorder(struct amvdec_session *sess, u64 ts, u32 offset)
+{
+ struct amvdec_timestamp *new_ts, *tmp;
+ unsigned long flags;
+
+ new_ts = kmalloc(sizeof(*new_ts), GFP_KERNEL);
+ new_ts->ts = ts;
+ new_ts->offset = offset;
+
+ spin_lock_irqsave(&sess->ts_spinlock, flags);
+
+ if (list_empty(&sess->timestamps))
+ goto add_tail;
+
+ list_for_each_entry(tmp, &sess->timestamps, list) {
+ if (ts <= tmp->ts) {
+ list_add_tail(&new_ts->list, &tmp->list);
+ goto unlock;
+ }
+ }
+
+add_tail:
+ list_add_tail(&new_ts->list, &sess->timestamps);
+unlock:
+ spin_unlock_irqrestore(&sess->ts_spinlock, flags);
+}
+EXPORT_SYMBOL_GPL(amvdec_add_ts_reorder);
+
+void amvdec_remove_ts(struct amvdec_session *sess, u64 ts)
+{
+ struct amvdec_timestamp *tmp;
+ unsigned long flags;
+
+ spin_lock_irqsave(&sess->ts_spinlock, flags);
+ list_for_each_entry(tmp, &sess->timestamps, list) {
+ if (tmp->ts == ts) {
+ list_del(&tmp->list);
+ kfree(tmp);
+ goto unlock;
+ }
+ }
+ dev_warn(sess->core->dev_dec,
+ "Couldn't remove buffer with timestamp %llu from list\n", ts);
+
+unlock:
+ spin_unlock_irqrestore(&sess->ts_spinlock, flags);
+}
+EXPORT_SYMBOL_GPL(amvdec_remove_ts);
+
+static void dst_buf_done(struct amvdec_session *sess,
+ struct vb2_v4l2_buffer *vbuf,
+ u32 field,
+ u64 timestamp)
+{
+ struct device *dev = sess->core->dev_dec;
+ u32 output_size = amvdec_get_output_size(sess);
+
+ switch (sess->pixfmt_cap) {
+ case V4L2_PIX_FMT_NV12M:
+ vbuf->vb2_buf.planes[0].bytesused = output_size;
+ vbuf->vb2_buf.planes[1].bytesused = output_size / 2;
+ break;
+ case V4L2_PIX_FMT_YUV420M:
+ vbuf->vb2_buf.planes[0].bytesused = output_size;
+ vbuf->vb2_buf.planes[1].bytesused = output_size / 4;
+ vbuf->vb2_buf.planes[2].bytesused = output_size / 4;
+ break;
+ }
+
+ vbuf->vb2_buf.timestamp = timestamp;
+ vbuf->sequence = sess->sequence_cap++;
+
+ if (sess->should_stop &&
+ atomic_read(&sess->esparser_queued_bufs) <= 2) {
+ const struct v4l2_event ev = { .type = V4L2_EVENT_EOS };
+
+ dev_dbg(dev, "Signaling EOS\n");
+ v4l2_event_queue_fh(&sess->fh, &ev);
+ vbuf->flags |= V4L2_BUF_FLAG_LAST;
+ } else if (sess->should_stop)
+ dev_dbg(dev, "should_stop, %u bufs remain\n",
+ atomic_read(&sess->esparser_queued_bufs));
+
+ dev_dbg(dev, "Buffer %u done\n", vbuf->vb2_buf.index);
+ vbuf->field = field;
+ v4l2_m2m_buf_done(vbuf, VB2_BUF_STATE_DONE);
+
+ /* Buffer done probably means the vififo got freed */
+ schedule_work(&sess->esparser_queue_work);
+}
+
+void amvdec_dst_buf_done(struct amvdec_session *sess,
+ struct vb2_v4l2_buffer *vbuf, u32 field)
+{
+ struct device *dev = sess->core->dev_dec;
+ struct amvdec_timestamp *tmp;
+ struct list_head *timestamps = &sess->timestamps;
+ u64 timestamp;
+ unsigned long flags;
+
+ spin_lock_irqsave(&sess->ts_spinlock, flags);
+ if (list_empty(timestamps)) {
+ dev_err(dev, "Buffer %u done but list is empty\n",
+ vbuf->vb2_buf.index);
+
+ v4l2_m2m_buf_done(vbuf, VB2_BUF_STATE_ERROR);
+ spin_unlock_irqrestore(&sess->ts_spinlock, flags);
+ return;
+ }
+
+ tmp = list_first_entry(timestamps, struct amvdec_timestamp, list);
+ timestamp = tmp->ts;
+ list_del(&tmp->list);
+ kfree(tmp);
+ spin_unlock_irqrestore(&sess->ts_spinlock, flags);
+
+ dst_buf_done(sess, vbuf, field, timestamp);
+ atomic_dec(&sess->esparser_queued_bufs);
+}
+EXPORT_SYMBOL_GPL(amvdec_dst_buf_done);
+
+static void amvdec_dst_buf_done_offset(struct amvdec_session *sess,
+ struct vb2_v4l2_buffer *vbuf,
+ u32 offset,
+ u32 field)
+{
+ struct device *dev = sess->core->dev_dec;
+ struct amvdec_timestamp *match = NULL;
+ struct amvdec_timestamp *tmp, *n;
+ u64 timestamp = 0;
+ unsigned long flags;
+
+ spin_lock_irqsave(&sess->ts_spinlock, flags);
+
+ /* Look for our vififo offset to get the corresponding timestamp. */
+ list_for_each_entry_safe(tmp, n, &sess->timestamps, list) {
+ s64 delta = (s64)offset - tmp->offset;
+
+ /* Offsets reported by codecs usually differ slightly,
+ * so we need some wiggle room.
+ * 4KiB being the minimum packet size, there is no risk here.
+ */
+ if (delta > (-1 * (s32)SZ_4K) && delta < SZ_4K) {
+ match = tmp;
+ break;
+ }
+
+ /* Delete any timestamp entry that appears before our target
+ * (not all src packets/timestamps lead to a frame)
+ */
+ if (delta > 0 || delta < -1 * (s32)sess->vififo_size) {
+ atomic_dec(&sess->esparser_queued_bufs);
+ list_del(&tmp->list);
+ kfree(tmp);
+ }
+ }
+
+ if (!match) {
+ dev_dbg(dev, "Buffer %u done but can't match offset (%08X)\n",
+ vbuf->vb2_buf.index, offset);
+ } else {
+ timestamp = match->ts;
+ list_del(&match->list);
+ kfree(match);
+ }
+ spin_unlock_irqrestore(&sess->ts_spinlock, flags);
+
+ dst_buf_done(sess, vbuf, field, timestamp);
+ if (match)
+ atomic_dec(&sess->esparser_queued_bufs);
+}
+
+void amvdec_dst_buf_done_idx(struct amvdec_session *sess,
+ u32 buf_idx, u32 offset, u32 field)
+{
+ struct vb2_v4l2_buffer *vbuf;
+ struct device *dev = sess->core->dev_dec;
+
+ vbuf = v4l2_m2m_dst_buf_remove_by_idx(sess->m2m_ctx, buf_idx);
+ if (!vbuf) {
+ dev_err(dev,
+ "Buffer %u done but it doesn't exist in m2m_ctx\n",
+ buf_idx);
+ return;
+ }
+
+ if (offset != -1)
+ amvdec_dst_buf_done_offset(sess, vbuf, offset, field);
+ else
+ amvdec_dst_buf_done(sess, vbuf, field);
+}
+EXPORT_SYMBOL_GPL(amvdec_dst_buf_done_idx);
+
+void amvdec_set_par_from_dar(struct amvdec_session *sess,
+ u32 dar_num, u32 dar_den)
+{
+ u32 div;
+
+ sess->pixelaspect.numerator = sess->height * dar_num;
+ sess->pixelaspect.denominator = sess->width * dar_den;
+ div = gcd(sess->pixelaspect.numerator, sess->pixelaspect.denominator);
+ sess->pixelaspect.numerator /= div;
+ sess->pixelaspect.denominator /= div;
+}
+EXPORT_SYMBOL_GPL(amvdec_set_par_from_dar);
+
+void amvdec_abort(struct amvdec_session *sess)
+{
+ dev_info(sess->core->dev, "Aborting decoding session!\n");
+ vb2_queue_error(&sess->m2m_ctx->cap_q_ctx.q);
+ vb2_queue_error(&sess->m2m_ctx->out_q_ctx.q);
+}
+EXPORT_SYMBOL_GPL(amvdec_abort);
new file mode 100644
@@ -0,0 +1,48 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (C) 2018 BayLibre, SAS
+ * Author: Maxime Jourdan <mjourdan@baylibre.com>
+ */
+
+#ifndef __MESON_VDEC_HELPERS_H_
+#define __MESON_VDEC_HELPERS_H_
+
+#include "vdec.h"
+
+/**
+ * amvdec_set_canvases() - Map VB2 buffers to canvases
+ *
+ * @sess: current session
+ * @reg_base: Registry bases of where to write the canvas indexes
+ * @reg_num: number of contiguous registers after each reg_base (including it)
+ */
+int amvdec_set_canvases(struct amvdec_session *sess,
+ u32 reg_base[], u32 reg_num[]);
+
+u32 amvdec_read_dos(struct amvdec_core *core, u32 reg);
+void amvdec_write_dos(struct amvdec_core *core, u32 reg, u32 val);
+void amvdec_write_dos_bits(struct amvdec_core *core, u32 reg, u32 val);
+void amvdec_clear_dos_bits(struct amvdec_core *core, u32 reg, u32 val);
+u32 amvdec_read_parser(struct amvdec_core *core, u32 reg);
+void amvdec_write_parser(struct amvdec_core *core, u32 reg, u32 val);
+
+void amvdec_dst_buf_done_idx(struct amvdec_session *sess, u32 buf_idx,
+ u32 offset, u32 field);
+void amvdec_dst_buf_done(struct amvdec_session *sess,
+ struct vb2_v4l2_buffer *vbuf, u32 field);
+
+/**
+ * amvdec_add_ts_reorder() - Add a timestamp to the list in chronological order
+ *
+ * @sess: current session
+ * @ts: timestamp to add
+ * @offset: offset in the VIFIFO where the associated packet was written
+ */
+void amvdec_add_ts_reorder(struct amvdec_session *sess, u64 ts, u32 offset);
+void amvdec_remove_ts(struct amvdec_session *sess, u64 ts);
+
+void amvdec_set_par_from_dar(struct amvdec_session *sess,
+ u32 dar_num, u32 dar_den);
+
+void amvdec_abort(struct amvdec_session *sess);
+#endif
new file mode 100644
@@ -0,0 +1,101 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2018 BayLibre, SAS
+ * Author: Maxime Jourdan <mjourdan@baylibre.com>
+ */
+
+#include "vdec_platform.h"
+#include "vdec.h"
+
+#include "vdec_1.h"
+#include "codec_mpeg12.h"
+
+static const struct amvdec_format vdec_formats_gxbb[] = {
+ {
+ .pixfmt = V4L2_PIX_FMT_MPEG1,
+ .min_buffers = 8,
+ .max_buffers = 8,
+ .max_width = 1920,
+ .max_height = 1080,
+ .vdec_ops = &vdec_1_ops,
+ .codec_ops = &codec_mpeg12_ops,
+ .firmware_path = "meson/gx/vmpeg12_mc",
+ .pixfmts_cap = { V4L2_PIX_FMT_NV12M, V4L2_PIX_FMT_YUV420M, 0 },
+ }, {
+ .pixfmt = V4L2_PIX_FMT_MPEG2,
+ .min_buffers = 8,
+ .max_buffers = 8,
+ .max_width = 1920,
+ .max_height = 1080,
+ .vdec_ops = &vdec_1_ops,
+ .codec_ops = &codec_mpeg12_ops,
+ .firmware_path = "meson/gx/vmpeg12_mc",
+ .pixfmts_cap = { V4L2_PIX_FMT_NV12M, V4L2_PIX_FMT_YUV420M, 0 },
+ },
+};
+
+static const struct amvdec_format vdec_formats_gxl[] = {
+ {
+ .pixfmt = V4L2_PIX_FMT_MPEG1,
+ .min_buffers = 8,
+ .max_buffers = 8,
+ .max_width = 1920,
+ .max_height = 1080,
+ .vdec_ops = &vdec_1_ops,
+ .codec_ops = &codec_mpeg12_ops,
+ .firmware_path = "meson/gx/vmpeg12_mc",
+ .pixfmts_cap = { V4L2_PIX_FMT_NV12M, V4L2_PIX_FMT_YUV420M, 0 },
+ }, {
+ .pixfmt = V4L2_PIX_FMT_MPEG2,
+ .min_buffers = 8,
+ .max_buffers = 8,
+ .max_width = 1920,
+ .max_height = 1080,
+ .vdec_ops = &vdec_1_ops,
+ .codec_ops = &codec_mpeg12_ops,
+ .firmware_path = "meson/gx/vmpeg12_mc",
+ .pixfmts_cap = { V4L2_PIX_FMT_NV12M, V4L2_PIX_FMT_YUV420M, 0 },
+ },
+};
+
+static const struct amvdec_format vdec_formats_gxm[] = {
+ {
+ .pixfmt = V4L2_PIX_FMT_MPEG1,
+ .min_buffers = 8,
+ .max_buffers = 8,
+ .max_width = 1920,
+ .max_height = 1080,
+ .vdec_ops = &vdec_1_ops,
+ .codec_ops = &codec_mpeg12_ops,
+ .firmware_path = "meson/gx/vmpeg12_mc",
+ .pixfmts_cap = { V4L2_PIX_FMT_NV12M, V4L2_PIX_FMT_YUV420M, 0 },
+ }, {
+ .pixfmt = V4L2_PIX_FMT_MPEG2,
+ .min_buffers = 8,
+ .max_buffers = 8,
+ .max_width = 1920,
+ .max_height = 1080,
+ .vdec_ops = &vdec_1_ops,
+ .codec_ops = &codec_mpeg12_ops,
+ .firmware_path = "meson/gx/vmpeg12_mc",
+ .pixfmts_cap = { V4L2_PIX_FMT_NV12M, V4L2_PIX_FMT_YUV420M, 0 },
+ },
+};
+
+const struct vdec_platform vdec_platform_gxbb = {
+ .formats = vdec_formats_gxbb,
+ .num_formats = ARRAY_SIZE(vdec_formats_gxbb),
+ .revision = VDEC_REVISION_GXBB,
+};
+
+const struct vdec_platform vdec_platform_gxl = {
+ .formats = vdec_formats_gxl,
+ .num_formats = ARRAY_SIZE(vdec_formats_gxl),
+ .revision = VDEC_REVISION_GXL,
+};
+
+const struct vdec_platform vdec_platform_gxm = {
+ .formats = vdec_formats_gxm,
+ .num_formats = ARRAY_SIZE(vdec_formats_gxm),
+ .revision = VDEC_REVISION_GXM,
+};
new file mode 100644
@@ -0,0 +1,30 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (C) 2018 BayLibre, SAS
+ * Author: Maxime Jourdan <mjourdan@baylibre.com>
+ */
+
+#ifndef __MESON_VDEC_PLATFORM_H_
+#define __MESON_VDEC_PLATFORM_H_
+
+#include "vdec.h"
+
+struct amvdec_format;
+
+enum vdec_revision {
+ VDEC_REVISION_GXBB,
+ VDEC_REVISION_GXL,
+ VDEC_REVISION_GXM,
+};
+
+struct vdec_platform {
+ const struct amvdec_format *formats;
+ const u32 num_formats;
+ enum vdec_revision revision;
+};
+
+extern const struct vdec_platform vdec_platform_gxbb;
+extern const struct vdec_platform vdec_platform_gxm;
+extern const struct vdec_platform vdec_platform_gxl;
+
+#endif
Amlogic SoCs feature a powerful video decoder unit able to decode many formats, with a performance of usually up to 4k60. This is a driver for this IP that is based around the v4l2 m2m framework. It features decoding for: - MPEG 1 - MPEG 2 Supported SoCs are: GXBB (S905), GXL (S905X/W/D), GXM (S912) There is also a hardware bitstream parser (ESPARSER) that is handled here. Signed-off-by: Maxime Jourdan <mjourdan@baylibre.com> --- drivers/media/platform/Kconfig | 10 + drivers/media/platform/meson/Makefile | 1 + drivers/media/platform/meson/vdec/Makefile | 8 + .../media/platform/meson/vdec/codec_mpeg12.c | 209 ++++ .../media/platform/meson/vdec/codec_mpeg12.h | 14 + drivers/media/platform/meson/vdec/dos_regs.h | 98 ++ drivers/media/platform/meson/vdec/esparser.c | 322 +++++ drivers/media/platform/meson/vdec/esparser.h | 32 + drivers/media/platform/meson/vdec/vdec.c | 1034 +++++++++++++++++ drivers/media/platform/meson/vdec/vdec.h | 251 ++++ drivers/media/platform/meson/vdec/vdec_1.c | 231 ++++ drivers/media/platform/meson/vdec/vdec_1.h | 14 + .../media/platform/meson/vdec/vdec_helpers.c | 412 +++++++ .../media/platform/meson/vdec/vdec_helpers.h | 48 + .../media/platform/meson/vdec/vdec_platform.c | 101 ++ .../media/platform/meson/vdec/vdec_platform.h | 30 + 16 files changed, 2815 insertions(+) create mode 100644 drivers/media/platform/meson/vdec/Makefile create mode 100644 drivers/media/platform/meson/vdec/codec_mpeg12.c create mode 100644 drivers/media/platform/meson/vdec/codec_mpeg12.h create mode 100644 drivers/media/platform/meson/vdec/dos_regs.h create mode 100644 drivers/media/platform/meson/vdec/esparser.c create mode 100644 drivers/media/platform/meson/vdec/esparser.h create mode 100644 drivers/media/platform/meson/vdec/vdec.c create mode 100644 drivers/media/platform/meson/vdec/vdec.h create mode 100644 drivers/media/platform/meson/vdec/vdec_1.c create mode 100644 drivers/media/platform/meson/vdec/vdec_1.h create mode 100644 drivers/media/platform/meson/vdec/vdec_helpers.c create mode 100644 drivers/media/platform/meson/vdec/vdec_helpers.h create mode 100644 drivers/media/platform/meson/vdec/vdec_platform.c create mode 100644 drivers/media/platform/meson/vdec/vdec_platform.h