--- /dev/null
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * PiSP Back End driver.
+ * Copyright (c) 2021-2022 Raspberry Pi Limited.
+ *
+ */
+#include <linux/clk.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-ioctl.h>
+#include <media/videobuf2-dma-contig.h>
+#include <media/videobuf2-vmalloc.h>
+
+#include "pisp_be_config.h"
+#include "pisp_be_formats.h"
+
+MODULE_DESCRIPTION("PiSP Back End driver");
+MODULE_AUTHOR("David Plowman <david.plowman@raspberrypi.com>");
+MODULE_AUTHOR("Nick Hollinghurst <nick.hollinghurst@raspberrypi.com>");
+MODULE_LICENSE("GPL v2");
+
+/* Offset to use when registering the /dev/videoX node */
+#define PISPBE_VIDEO_NODE_OFFSET 20
+
+/* Maximum number of config buffers possible */
+#define PISP_BE_NUM_CONFIG_BUFFERS VB2_MAX_FRAME
+
+/*
+ * We want to support 2 independent instances allowing 2 simultaneous users
+ * of the ISP-BE (of course they share hardware, platform resources and mutex).
+ * Each such instance comprises a group of device nodes representing input
+ * and output queues, and a media controller device node to describe them.
+ */
+#define PISPBE_NUM_NODE_GROUPS 2
+
+#define PISPBE_NAME "pispbe"
+
+/* Some ISP-BE registers */
+#define PISP_BE_VERSION_OFFSET (0x0)
+#define PISP_BE_CONTROL_OFFSET (0x4)
+#define PISP_BE_TILE_ADDR_LO_OFFSET (0x8)
+#define PISP_BE_TILE_ADDR_HI_OFFSET (0xc)
+#define PISP_BE_STATUS_OFFSET (0x10)
+#define PISP_BE_BATCH_STATUS_OFFSET (0x14)
+#define PISP_BE_INTERRUPT_EN_OFFSET (0x18)
+#define PISP_BE_INTERRUPT_STATUS_OFFSET (0x1c)
+#define PISP_BE_AXI_OFFSET (0x20)
+#define PISP_BE_CONFIG_BASE_OFFSET (0x40)
+#define PISP_BE_IO_INPUT_ADDR0_LO_OFFSET (PISP_BE_CONFIG_BASE_OFFSET)
+#define PISP_BE_GLOBAL_BAYER_ENABLE_OFFSET (PISP_BE_CONFIG_BASE_OFFSET + 0x70)
+#define PISP_BE_GLOBAL_RGB_ENABLE_OFFSET (PISP_BE_CONFIG_BASE_OFFSET + 0x74)
+#define N_HW_ADDRESSES 14
+#define N_HW_ENABLES 2
+
+#define PISP_BE_VERSION_2712C1 0x02252700
+#define PISP_BE_VERSION_MINOR_BITS 0xF
+
+/*
+ * This maps our nodes onto the inputs/outputs of the actual PiSP Back End.
+ * Be wary of the word "OUTPUT" which is used ambiguously here. In a V4L2
+ * context it means an input to the hardware (source image or metadata).
+ * Elsewhere it means an output from the hardware.
+ */
+enum node_ids {
+ MAIN_INPUT_NODE,
+ TDN_INPUT_NODE,
+ STITCH_INPUT_NODE,
+ HOG_OUTPUT_NODE,
+ OUTPUT0_NODE,
+ OUTPUT1_NODE,
+ TDN_OUTPUT_NODE,
+ STITCH_OUTPUT_NODE,
+ CONFIG_NODE,
+ PISPBE_NUM_NODES
+};
+
+struct node_description {
+ const char *ent_name;
+ enum v4l2_buf_type buf_type;
+ unsigned int caps;
+};
+
+static const struct node_description node_desc[PISPBE_NUM_NODES] = {
+ /* MAIN_INPUT_NODE */
+ {
+ .ent_name = PISPBE_NAME "-input",
+ .buf_type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE,
+ .caps = V4L2_CAP_VIDEO_OUTPUT_MPLANE,
+ },
+ /* TDN_INPUT_NODE */
+ {
+ .ent_name = PISPBE_NAME "-tdn_input",
+ .buf_type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE,
+ .caps = V4L2_CAP_VIDEO_OUTPUT_MPLANE,
+ },
+ /* STITCH_INPUT_NODE */
+ {
+ .ent_name = PISPBE_NAME "-stitch_input",
+ .buf_type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE,
+ .caps = V4L2_CAP_VIDEO_OUTPUT_MPLANE,
+ },
+ /* HOG_OUTPUT_NODE */
+ {
+ .ent_name = PISPBE_NAME "-hog_output",
+ .buf_type = V4L2_BUF_TYPE_META_CAPTURE,
+ .caps = V4L2_CAP_META_CAPTURE,
+ },
+ /* OUTPUT0_NODE */
+ {
+ .ent_name = PISPBE_NAME "-output0",
+ .buf_type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE,
+ .caps = V4L2_CAP_VIDEO_CAPTURE_MPLANE,
+ },
+ /* OUTPUT1_NODE */
+ {
+ .ent_name = PISPBE_NAME "-output1",
+ .buf_type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE,
+ .caps = V4L2_CAP_VIDEO_CAPTURE_MPLANE,
+ },
+ /* TDN_OUTPUT_NODE */
+ {
+ .ent_name = PISPBE_NAME "-tdn_output",
+ .buf_type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE,
+ .caps = V4L2_CAP_VIDEO_CAPTURE_MPLANE,
+ },
+ /* STITCH_OUTPUT_NODE */
+ {
+ .ent_name = PISPBE_NAME "-stitch_output",
+ .buf_type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE,
+ .caps = V4L2_CAP_VIDEO_CAPTURE_MPLANE,
+ },
+ /* CONFIG_NODE */
+ {
+ .ent_name = PISPBE_NAME "-config",
+ .buf_type = V4L2_BUF_TYPE_META_OUTPUT,
+ .caps = V4L2_CAP_META_OUTPUT,
+ }
+};
+
+#define NODE_DESC_IS_OUTPUT(desc) ( \
+ ((desc)->buf_type == V4L2_BUF_TYPE_META_OUTPUT) || \
+ ((desc)->buf_type == V4L2_BUF_TYPE_VIDEO_OUTPUT) || \
+ ((desc)->buf_type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE))
+
+#define NODE_IS_META(node) ( \
+ ((node)->buf_type == V4L2_BUF_TYPE_META_OUTPUT) || \
+ ((node)->buf_type == V4L2_BUF_TYPE_META_CAPTURE))
+#define NODE_IS_OUTPUT(node) ( \
+ ((node)->buf_type == V4L2_BUF_TYPE_META_OUTPUT) || \
+ ((node)->buf_type == V4L2_BUF_TYPE_VIDEO_OUTPUT) || \
+ ((node)->buf_type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE))
+#define NODE_IS_CAPTURE(node) ( \
+ ((node)->buf_type == V4L2_BUF_TYPE_META_CAPTURE) || \
+ ((node)->buf_type == V4L2_BUF_TYPE_VIDEO_CAPTURE) || \
+ ((node)->buf_type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE))
+#define NODE_IS_MPLANE(node) ( \
+ ((node)->buf_type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) || \
+ ((node)->buf_type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE))
+
+/*
+ * Structure to describe a single node /dev/video<N> which represents a single
+ * input or output queue to the PiSP Back End device.
+ */
+struct pispbe_node {
+ unsigned int id;
+ int vfl_dir;
+ enum v4l2_buf_type buf_type;
+ struct video_device vfd;
+ struct media_pad pad;
+ struct media_intf_devnode *intf_devnode;
+ struct media_link *intf_link;
+ struct pispbe_node_group *node_group;
+ struct mutex node_lock;
+ struct mutex queue_lock;
+ spinlock_t ready_lock;
+ struct list_head ready_queue;
+ struct vb2_queue queue;
+ struct v4l2_format format;
+ const struct pisp_be_format *pisp_format;
+};
+
+/* For logging only, use the entity name with "pispbe" and separator removed */
+#define NODE_NAME(node) \
+ (node_desc[(node)->id].ent_name + sizeof(PISPBE_NAME))
+#define NODE_GET_V4L2(node) ((node)->node_group->v4l2_dev)
+
+/*
+ * Node group structure, which comprises all the input and output nodes that a
+ * single PiSP client will need, along with its own v4l2 and media devices.
+ */
+struct pispbe_node_group {
+ unsigned int id;
+ struct v4l2_device v4l2_dev;
+ struct v4l2_subdev sd;
+ struct pispbe_dev *pispbe;
+ struct media_device mdev;
+ struct pispbe_node node[PISPBE_NUM_NODES];
+ u32 streaming_map; /* bitmap of which nodes are streaming */
+ struct media_pad pad[PISPBE_NUM_NODES]; /* output pads first */
+ struct pisp_be_tiles_config *config;
+ dma_addr_t config_dma_addr;
+};
+
+/* Records details of the jobs currently running or queued on the h/w. */
+struct pispbe_job {
+ struct pispbe_node_group *node_group;
+ /*
+ * An array of buffer pointers - remember it's source buffers first,
+ * then captures, then metadata last.
+ */
+ struct pispbe_buffer *buf[PISPBE_NUM_NODES];
+};
+
+/*
+ * Structure representing the entire PiSP Back End device, comprising several
+ * node groups which share platform resources and a mutex for the actual HW.
+ */
+struct pispbe_dev {
+ struct device *dev;
+ struct pispbe_node_group node_group[PISPBE_NUM_NODE_GROUPS];
+ int hw_busy; /* non-zero if a job is queued or is being started */
+ struct pispbe_job queued_job, running_job;
+ void __iomem *be_reg_base;
+ struct clk *clk;
+ int irq;
+ u32 hw_version;
+ u8 done, started;
+ spinlock_t hw_lock; /* protects "hw_busy" flag and streaming_map */
+};
+
+static inline u32 read_reg(struct pispbe_dev *pispbe, unsigned int offset)
+{
+ return readl(pispbe->be_reg_base + offset);
+}
+
+static inline void write_reg(struct pispbe_dev *pispbe, unsigned int offset,
+ u32 val)
+{
+ writel(val, pispbe->be_reg_base + offset);
+}
+
+/* Check and initialize hardware. */
+static int hw_init(struct pispbe_dev *pispbe)
+{
+ u32 u;
+
+ /* Check the HW is present and has a known version */
+ u = read_reg(pispbe, PISP_BE_VERSION_OFFSET);
+ dev_info(pispbe->dev, "pispbe_probe: HW version: 0x%08x", u);
+ pispbe->hw_version = u;
+ if ((u & ~PISP_BE_VERSION_MINOR_BITS) != PISP_BE_VERSION_2712C1)
+ return -ENODEV;
+
+ /* Clear leftover interrupts */
+ write_reg(pispbe, PISP_BE_INTERRUPT_STATUS_OFFSET, 0xFFFFFFFFu);
+ u = read_reg(pispbe, PISP_BE_BATCH_STATUS_OFFSET);
+ dev_info(pispbe->dev, "pispbe_probe: BatchStatus: 0x%08x", u);
+ pispbe->done = (uint8_t)u;
+ pispbe->started = (uint8_t)(u >> 8);
+ u = read_reg(pispbe, PISP_BE_STATUS_OFFSET);
+ dev_info(pispbe->dev, "pispbe_probe: Status: 0x%08x", u);
+ if (u != 0 || pispbe->done != pispbe->started) {
+ dev_err(pispbe->dev, "pispbe_probe: HW is stuck or busy\n");
+ return -EBUSY;
+ }
+ /*
+ * AXI QOS=0, CACHE=4'b0010, PROT=3'b011
+ * Also set "chicken bits" 22:20 which enable sub-64-byte bursts
+ * and AXI AWID/BID variability (on versions which support this).
+ */
+ write_reg(pispbe, PISP_BE_AXI_OFFSET, 0x32703200u);
+
+ /* Enable both interrupt flags */
+ write_reg(pispbe, PISP_BE_INTERRUPT_EN_OFFSET, 0x00000003u);
+ return 0;
+}
+
+/*
+ * Queue a job to the h/w. If the h/w is idle it will begin immediately.
+ * Caller must ensure it is "safe to queue", i.e. we don't already have a
+ * queued, unstarted job.
+ */
+static void hw_queue_job(struct pispbe_dev *pispbe,
+ dma_addr_t hw_dma_addrs[N_HW_ADDRESSES],
+ u32 hw_enables[N_HW_ENABLES],
+ struct pisp_be_config *config, dma_addr_t tiles,
+ unsigned int num_tiles)
+{
+ unsigned int begin, end;
+ unsigned int u;
+
+ if (read_reg(pispbe, PISP_BE_STATUS_OFFSET) & 1)
+ dev_err(pispbe->dev, "ERROR: not safe to queue new job!\n");
+
+ /*
+ * Write configuration to hardware. DMA addresses and enable flags
+ * are passed separately, because the driver needs to sanitize them,
+ * and we don't want to modify (or be vulnerable to modifications of)
+ * the mmap'd buffer.
+ */
+ for (u = 0; u < N_HW_ADDRESSES; ++u) {
+ write_reg(pispbe, PISP_BE_IO_INPUT_ADDR0_LO_OFFSET + 8 * u,
+ (u32)(hw_dma_addrs[u]));
+ write_reg(pispbe, PISP_BE_IO_INPUT_ADDR0_LO_OFFSET + 8 * u + 4,
+ (u32)(hw_dma_addrs[u] >> 32));
+ }
+ write_reg(pispbe, PISP_BE_GLOBAL_BAYER_ENABLE_OFFSET, hw_enables[0]);
+ write_reg(pispbe, PISP_BE_GLOBAL_RGB_ENABLE_OFFSET, hw_enables[1]);
+
+ /*
+ * Everything else is as supplied by the user. XXX Buffer sizes not
+ * checked!
+ */
+ begin = offsetof(struct pisp_be_config, global.bayer_order) /
+ sizeof(u32);
+ end = offsetof(struct pisp_be_config, axi) / sizeof(u32);
+ for (u = begin; u < end; u++) {
+ unsigned int val = ((u32 *)config)[u];
+
+ write_reg(pispbe, PISP_BE_CONFIG_BASE_OFFSET + 4 * u, val);
+ }
+
+ /* Read back the addresses -- an error here could be fatal */
+ for (u = 0; u < N_HW_ADDRESSES; ++u) {
+ unsigned int offset = PISP_BE_IO_INPUT_ADDR0_LO_OFFSET + 8 * u;
+ u64 along = read_reg(pispbe, offset);
+
+ along += ((u64)read_reg(pispbe, offset + 4)) << 32;
+ if (along != (u64)(hw_dma_addrs[u])) {
+ dev_err(pispbe->dev,
+ "ISP BE config error: check if ISP RAMs enabled?\n");
+ return;
+ }
+ }
+
+ /*
+ * Write tile pointer to hardware. XXX Tile offsets and sizes not
+ * checked (and even if checked, the user could subsequently modify
+ * them)!
+ */
+ write_reg(pispbe, PISP_BE_TILE_ADDR_LO_OFFSET, (u32)tiles);
+ write_reg(pispbe, PISP_BE_TILE_ADDR_HI_OFFSET, (u32)(tiles >> 32));
+
+ /* Enqueue the job */
+ write_reg(pispbe, PISP_BE_CONTROL_OFFSET, 3 + 65536 * num_tiles);
+}
+
+struct pispbe_buffer {
+ struct vb2_v4l2_buffer vb;
+ struct list_head ready_list;
+ unsigned int config_index;
+};
+
+static int get_addr_3(dma_addr_t addr[3], struct pispbe_buffer *buf,
+ struct pispbe_node *node)
+{
+ unsigned int num_planes = node->format.fmt.pix_mp.num_planes;
+ unsigned int plane_factor = 0;
+ unsigned int size;
+ unsigned int p;
+
+ if (!buf || !node->pisp_format)
+ return 0;
+
+ WARN_ON(!NODE_IS_MPLANE(node));
+
+ /*
+ * Determine the base plane size. This will not be the same
+ * as node->format.fmt.pix_mp.plane_fmt[0].sizeimage for a single
+ * plane buffer in an mplane format.
+ */
+ size = node->format.fmt.pix_mp.plane_fmt[0].bytesperline *
+ node->format.fmt.pix_mp.height;
+
+ for (p = 0; p < num_planes && p < 3; p++) {
+ addr[p] = vb2_dma_contig_plane_dma_addr(&buf->vb.vb2_buf, p);
+ plane_factor += node->pisp_format->plane_factor[p];
+ }
+
+ for (; p < MAX_PLANES && node->pisp_format->plane_factor[p]; p++) {
+ /*
+ * Calculate the address offset of this plane as needed
+ * by the hardware. This is specifically for non-mplane
+ * buffer formats, where there are 3 image planes, e.g.
+ * for the V4L2_PIX_FMT_YUV420 format.
+ */
+ addr[p] = addr[0] + ((size * plane_factor) >> 3);
+ plane_factor += node->pisp_format->plane_factor[p];
+ }
+
+ return num_planes;
+}
+
+static dma_addr_t get_addr(struct pispbe_buffer *buf)
+{
+ if (buf)
+ return vb2_dma_contig_plane_dma_addr(&buf->vb.vb2_buf, 0);
+ return 0;
+}
+
+static void
+fixup_addrs_enables(dma_addr_t addrs[N_HW_ADDRESSES],
+ u32 hw_enables[N_HW_ENABLES],
+ struct pisp_be_tiles_config *config,
+ struct pispbe_buffer *buf[PISPBE_NUM_NODES],
+ struct pispbe_node_group *node_group)
+{
+ int ret, i;
+
+ /* Take a copy of the "enable" bitmaps so we can modify them. */
+ hw_enables[0] = config->config.global.bayer_enables;
+ hw_enables[1] = config->config.global.rgb_enables;
+
+ /*
+ * Main input first. There are 3 address pointers, corresponding to up
+ * to 3 planes.
+ */
+ ret = get_addr_3(addrs, buf[MAIN_INPUT_NODE],
+ &node_group->node[MAIN_INPUT_NODE]);
+ if (ret <= 0) {
+ /*
+ * This shouldn't happen; pispbe_schedule_internal should insist
+ * on an input.
+ */
+ dev_warn(node_group->pispbe->dev,
+ "ISP-BE missing input\n");
+ hw_enables[0] = 0;
+ hw_enables[1] = 0;
+ return;
+ }
+
+ /*
+ * Now TDN/Stitch inputs and outputs. These are single-plane and only
+ * used with Bayer input. Input enables must match the requirements
+ * of the processing stages, otherwise the hardware can lock up!
+ */
+ if (hw_enables[0] & PISP_BE_BAYER_ENABLE_INPUT) {
+ addrs[3] = get_addr(buf[TDN_INPUT_NODE]);
+ if (addrs[3] == 0 ||
+ !(hw_enables[0] & PISP_BE_BAYER_ENABLE_TDN_INPUT) ||
+ !(hw_enables[0] & PISP_BE_BAYER_ENABLE_TDN) ||
+ (config->config.tdn.reset & 1)) {
+ hw_enables[0] &= ~(PISP_BE_BAYER_ENABLE_TDN_INPUT |
+ PISP_BE_BAYER_ENABLE_TDN_DECOMPRESS);
+ if (!(config->config.tdn.reset & 1))
+ hw_enables[0] &= ~PISP_BE_BAYER_ENABLE_TDN;
+ }
+
+ addrs[4] = get_addr(buf[STITCH_INPUT_NODE]);
+ if (addrs[4] == 0 ||
+ !(hw_enables[0] & PISP_BE_BAYER_ENABLE_STITCH_INPUT) ||
+ !(hw_enables[0] & PISP_BE_BAYER_ENABLE_STITCH)) {
+ hw_enables[0] &=
+ ~(PISP_BE_BAYER_ENABLE_STITCH_INPUT |
+ PISP_BE_BAYER_ENABLE_STITCH_DECOMPRESS |
+ PISP_BE_BAYER_ENABLE_STITCH);
+ }
+
+ addrs[5] = get_addr(buf[TDN_OUTPUT_NODE]);
+ if (addrs[5] == 0)
+ hw_enables[0] &= ~(PISP_BE_BAYER_ENABLE_TDN_COMPRESS |
+ PISP_BE_BAYER_ENABLE_TDN_OUTPUT);
+
+ addrs[6] = get_addr(buf[STITCH_OUTPUT_NODE]);
+ if (addrs[6] == 0)
+ hw_enables[0] &=
+ ~(PISP_BE_BAYER_ENABLE_STITCH_COMPRESS |
+ PISP_BE_BAYER_ENABLE_STITCH_OUTPUT);
+ } else {
+ /* No Bayer input? Disable entire Bayer pipe (else lockup) */
+ hw_enables[0] = 0;
+ }
+
+ /* Main image output channels. */
+ for (i = 0; i < PISP_BACK_END_NUM_OUTPUTS; i++) {
+ ret = get_addr_3(addrs + 7 + 3 * i, buf[OUTPUT0_NODE + i],
+ &node_group->node[OUTPUT0_NODE + i]);
+ if (ret <= 0)
+ hw_enables[1] &= ~(PISP_BE_RGB_ENABLE_OUTPUT0 << i);
+ }
+
+ /* HoG output (always single plane). */
+ addrs[13] = get_addr(buf[HOG_OUTPUT_NODE]);
+ if (addrs[13] == 0)
+ hw_enables[1] &= ~PISP_BE_RGB_ENABLE_HOG;
+}
+
+/*
+ * Internal function. Called from pispbe_schedule_one/all. Returns non-zero if
+ * we started a job.
+ *
+ * Warning: needs to be called with hw_lock taken, and releases it if it
+ * schedules a job.
+ */
+static int pispbe_schedule_internal(struct pispbe_node_group *node_group,
+ unsigned long flags)
+{
+ struct pisp_be_tiles_config *config_tiles_buffer;
+ struct pispbe_dev *pispbe = node_group->pispbe;
+ struct pispbe_buffer *buf[PISPBE_NUM_NODES];
+ dma_addr_t hw_dma_addrs[N_HW_ADDRESSES];
+ dma_addr_t tiles;
+ u32 hw_enables[N_HW_ENABLES];
+ struct pispbe_node *node;
+ unsigned long flags1;
+ unsigned int config_index;
+ int i;
+
+ /*
+ * To schedule a job, we need all streaming nodes (apart from Output0,
+ * Output1, Tdn and Stitch) to have a buffer ready, which must
+ * include at least a config buffer and a main input image.
+ *
+ * For Output0, Output1, Tdn and Stitch, a buffer only needs to be
+ * available if the blocks are enabled in the config.
+ *
+ * (Note that streaming_map is protected by hw_lock, which is held.)
+ */
+ if (((BIT(CONFIG_NODE) | BIT(MAIN_INPUT_NODE)) &
+ node_group->streaming_map) !=
+ (BIT(CONFIG_NODE) | BIT(MAIN_INPUT_NODE))) {
+ dev_dbg(pispbe->dev, "Nothing to do\n");
+ return 0;
+ }
+
+ node = &node_group->node[CONFIG_NODE];
+ spin_lock_irqsave(&node->ready_lock, flags1);
+ buf[CONFIG_NODE] =
+ list_first_entry_or_null(&node->ready_queue, struct pispbe_buffer,
+ ready_list);
+ spin_unlock_irqrestore(&node->ready_lock, flags1);
+
+ /* Exit early if no config buffer has been queued. */
+ if (!buf[CONFIG_NODE])
+ return 0;
+
+ config_index = buf[CONFIG_NODE]->vb.vb2_buf.index;
+ config_tiles_buffer = &node_group->config[config_index];
+ tiles = (dma_addr_t)node_group->config_dma_addr +
+ config_index * sizeof(struct pisp_be_tiles_config) +
+ offsetof(struct pisp_be_tiles_config, tiles);
+
+ /* remember: srcimages, captures then metadata */
+ for (i = 0; i < PISPBE_NUM_NODES; i++) {
+ unsigned int bayer_en =
+ config_tiles_buffer->config.global.bayer_enables;
+ unsigned int rgb_en =
+ config_tiles_buffer->config.global.rgb_enables;
+ bool ignore_buffers = false;
+
+ /* Config node is handled outside the loop above. */
+ if (i == CONFIG_NODE)
+ continue;
+
+ buf[i] = NULL;
+ if (!(node_group->streaming_map & BIT(i)))
+ continue;
+
+ if ((!(rgb_en & PISP_BE_RGB_ENABLE_OUTPUT0) &&
+ i == OUTPUT0_NODE) ||
+ (!(rgb_en & PISP_BE_RGB_ENABLE_OUTPUT1) &&
+ i == OUTPUT1_NODE) ||
+ (!(bayer_en & PISP_BE_BAYER_ENABLE_TDN_INPUT) &&
+ i == TDN_INPUT_NODE) ||
+ (!(bayer_en & PISP_BE_BAYER_ENABLE_TDN_OUTPUT) &&
+ i == TDN_OUTPUT_NODE) ||
+ (!(bayer_en & PISP_BE_BAYER_ENABLE_STITCH_INPUT) &&
+ i == STITCH_INPUT_NODE) ||
+ (!(bayer_en & PISP_BE_BAYER_ENABLE_STITCH_OUTPUT) &&
+ i == STITCH_OUTPUT_NODE)) {
+ /*
+ * Ignore Output0/Output1/Tdn/Stitch buffer check if the
+ * global enables aren't set for these blocks. If a
+ * buffer has been provided, we dequeue it back to the
+ * user with the other in-use buffers.
+ *
+ */
+ ignore_buffers = true;
+ }
+
+ node = &node_group->node[i];
+
+ spin_lock_irqsave(&node->ready_lock, flags1);
+ buf[i] = list_first_entry_or_null(&node->ready_queue,
+ struct pispbe_buffer,
+ ready_list);
+ spin_unlock_irqrestore(&node->ready_lock, flags1);
+ if (!buf[i] && !ignore_buffers) {
+ dev_dbg(pispbe->dev, "Nothing to do\n");
+ return 0;
+ }
+ }
+
+ /* Pull a buffer from each V4L2 queue to form the queued job */
+ for (i = 0; i < PISPBE_NUM_NODES; i++) {
+ if (buf[i]) {
+ node = &node_group->node[i];
+
+ spin_lock_irqsave(&node->ready_lock, flags1);
+ list_del(&buf[i]->ready_list);
+ spin_unlock_irqrestore(&node->ready_lock,
+ flags1);
+ }
+ pispbe->queued_job.buf[i] = buf[i];
+ }
+
+ pispbe->queued_job.node_group = node_group;
+ pispbe->hw_busy = 1;
+ spin_unlock_irqrestore(&pispbe->hw_lock, flags);
+
+ /*
+ * We can kick the job off without the hw_lock, as this can
+ * never run again until hw_busy is cleared, which will happen
+ * only when the following job has been queued.
+ */
+ dev_dbg(pispbe->dev, "Have buffers - starting hardware\n");
+
+ /* Convert buffers to DMA addresses for the hardware */
+ fixup_addrs_enables(hw_dma_addrs, hw_enables,
+ config_tiles_buffer, buf, node_group);
+ /*
+ * This could be a spot to fill in the
+ * buf[i]->vb.vb2_buf.planes[j].bytesused fields?
+ */
+ i = config_tiles_buffer->num_tiles;
+ if (i <= 0 || i > PISP_BACK_END_NUM_TILES ||
+ !((hw_enables[0] | hw_enables[1]) &
+ PISP_BE_BAYER_ENABLE_INPUT)) {
+ /*
+ * Bad job. We can't let it proceed as it could lock up
+ * the hardware, or worse!
+ *
+ * XXX How to deal with this most cleanly? For now, just
+ * force num_tiles to 0, which causes the H/W to do
+ * something bizarre but survivable. It increments
+ * (started,done) counters by more than 1, but we seem
+ * to survive...
+ */
+ dev_err(pispbe->dev, "PROBLEM: Bad job");
+ i = 0;
+ }
+ hw_queue_job(pispbe, hw_dma_addrs, hw_enables,
+ &config_tiles_buffer->config, tiles, i);
+
+ return 1;
+}
+
+/* Try and schedule a job for just a single node group. */
+static void pispbe_schedule_one(struct pispbe_node_group *node_group)
+{
+ struct pispbe_dev *pispbe = node_group->pispbe;
+ unsigned long flags;
+ int ret;
+
+ spin_lock_irqsave(&pispbe->hw_lock, flags);
+ if (pispbe->hw_busy) {
+ spin_unlock_irqrestore(&pispbe->hw_lock, flags);
+ return;
+ }
+
+ /* A non-zero return means the lock was released. */
+ ret = pispbe_schedule_internal(node_group, flags);
+ if (!ret)
+ spin_unlock_irqrestore(&pispbe->hw_lock, flags);
+}
+
+/* Try and schedule a job for any of the node groups. */
+static void pispbe_schedule_any(struct pispbe_dev *pispbe, int clear_hw_busy)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&pispbe->hw_lock, flags);
+
+ if (clear_hw_busy)
+ pispbe->hw_busy = 0;
+ if (pispbe->hw_busy == 0) {
+ unsigned int i;
+
+ for (i = 0; i < PISPBE_NUM_NODE_GROUPS; i++) {
+ /*
+ * A non-zero return from pispbe_schedule_internal means
+ * the lock was released.
+ */
+ if (pispbe_schedule_internal(&pispbe->node_group[i],
+ flags))
+ return;
+ }
+ }
+ spin_unlock_irqrestore(&pispbe->hw_lock, flags);
+}
+
+static void pispbe_isr_jobdone(struct pispbe_dev *pispbe,
+ struct pispbe_job *job)
+{
+ struct pispbe_buffer **buf = job->buf;
+ u64 ts = ktime_get_ns();
+ int i;
+
+ for (i = 0; i < PISPBE_NUM_NODES; i++) {
+ if (buf[i]) {
+ buf[i]->vb.vb2_buf.timestamp = ts;
+ vb2_buffer_done(&buf[i]->vb.vb2_buf,
+ VB2_BUF_STATE_DONE);
+ }
+ }
+}
+
+static irqreturn_t pispbe_isr(int irq, void *dev)
+{
+ struct pispbe_dev *pispbe = (struct pispbe_dev *)dev;
+ u8 started, done;
+ int can_queue_another = 0;
+ u32 u;
+
+ u = read_reg(pispbe, PISP_BE_INTERRUPT_STATUS_OFFSET);
+ if (u == 0)
+ return IRQ_NONE;
+
+ write_reg(pispbe, PISP_BE_INTERRUPT_STATUS_OFFSET, u);
+ dev_dbg(pispbe->dev, "Hardware interrupt\n");
+ u = read_reg(pispbe, PISP_BE_BATCH_STATUS_OFFSET);
+ done = (uint8_t)u;
+ started = (uint8_t)(u >> 8);
+ dev_dbg(pispbe->dev,
+ "H/W started %d done %d, previously started %d done %d\n",
+ (int)started, (int)done, (int)pispbe->started,
+ (int)pispbe->done);
+
+ /*
+ * Be aware that done can go up by 2 and started by 1 when: a job that
+ * we previously saw "start" now finishes, and we then queued a new job
+ * which we see both start and finish "simultaneously".
+ */
+ if (pispbe->running_job.node_group && pispbe->done != done) {
+ pispbe_isr_jobdone(pispbe, &pispbe->running_job);
+ memset(&pispbe->running_job, 0, sizeof(pispbe->running_job));
+ pispbe->done++;
+ dev_dbg(pispbe->dev, "Job done (1)\n");
+ }
+
+ if (pispbe->started != started) {
+ pispbe->started++;
+ can_queue_another = 1;
+ dev_dbg(pispbe->dev, "Job started\n");
+
+ if (pispbe->done != done && pispbe->queued_job.node_group) {
+ pispbe_isr_jobdone(pispbe, &pispbe->queued_job);
+ pispbe->done++;
+ dev_dbg(pispbe->dev, "Job done (2)\n");
+ } else {
+ pispbe->running_job = pispbe->queued_job;
+ }
+
+ memset(&pispbe->queued_job, 0, sizeof(pispbe->queued_job));
+ }
+
+ if (pispbe->done != done || pispbe->started != started) {
+ dev_err(pispbe->dev, "PROBLEM: counters not matching!\n");
+ pispbe->started = started;
+ pispbe->done = done;
+ }
+
+ /* check if there's more to do before going to sleep */
+ pispbe_schedule_any(pispbe, can_queue_another);
+
+ return IRQ_HANDLED;
+}
+
+static int pisp_be_validate_config(struct pispbe_node_group *node_group,
+ struct pisp_be_tiles_config *config)
+{
+ u32 bayer_enables = config->config.global.bayer_enables;
+ u32 rgb_enables = config->config.global.rgb_enables;
+ struct device *dev = node_group->pispbe->dev;
+ struct v4l2_format *fmt;
+ unsigned int bpl, size, i, j;
+
+ if (!(bayer_enables & PISP_BE_BAYER_ENABLE_INPUT) ==
+ !(rgb_enables & PISP_BE_RGB_ENABLE_INPUT)) {
+ dev_err(dev, "%s: Not one input enabled\n", __func__);
+ return -EIO;
+ }
+
+ /* Ensure output config strides and buffer sizes match the V4L2 formats. */
+ fmt = &node_group->node[TDN_OUTPUT_NODE].format;
+ if (bayer_enables & PISP_BE_BAYER_ENABLE_TDN_OUTPUT) {
+ bpl = config->config.tdn_output_format.stride;
+ size = bpl * config->config.tdn_output_format.height;
+ if (fmt->fmt.pix_mp.plane_fmt[0].bytesperline < bpl) {
+ dev_err(dev, "%s: bpl mismatch on tdn_output\n",
+ __func__);
+ return -EINVAL;
+ }
+ if (fmt->fmt.pix_mp.plane_fmt[0].sizeimage < size) {
+ dev_err(dev, "%s: size mismatch on tdn_output\n",
+ __func__);
+ return -EINVAL;
+ }
+ }
+
+ fmt = &node_group->node[STITCH_OUTPUT_NODE].format;
+ if (bayer_enables & PISP_BE_BAYER_ENABLE_STITCH_OUTPUT) {
+ bpl = config->config.stitch_output_format.stride;
+ size = bpl * config->config.stitch_output_format.height;
+ if (fmt->fmt.pix_mp.plane_fmt[0].bytesperline < bpl) {
+ dev_err(dev, "%s: bpl mismatch on stitch_output\n",
+ __func__);
+ return -EINVAL;
+ }
+ if (fmt->fmt.pix_mp.plane_fmt[0].sizeimage < size) {
+ dev_err(dev, "%s: size mismatch on stitch_output\n",
+ __func__);
+ return -EINVAL;
+ }
+ }
+
+ for (j = 0; j < PISP_BACK_END_NUM_OUTPUTS; j++) {
+ if (!(rgb_enables & PISP_BE_RGB_ENABLE_OUTPUT(j)))
+ continue;
+ if (config->config.output_format[j].image.format &
+ PISP_IMAGE_FORMAT_WALLPAPER_ROLL)
+ continue; /* TODO: Size checks for wallpaper formats */
+
+ fmt = &node_group->node[OUTPUT0_NODE + j].format;
+ for (i = 0; i < fmt->fmt.pix_mp.num_planes; i++) {
+ bpl = !i ? config->config.output_format[j].image.stride
+ : config->config.output_format[j].image.stride2;
+ size = bpl * config->config.output_format[j].image.height;
+
+ if (config->config.output_format[j].image.format &
+ PISP_IMAGE_FORMAT_SAMPLING_420)
+ size >>= 1;
+ if (fmt->fmt.pix_mp.plane_fmt[i].bytesperline < bpl) {
+ dev_err(dev, "%s: bpl mismatch on output %d\n",
+ __func__, j);
+ return -EINVAL;
+ }
+ if (fmt->fmt.pix_mp.plane_fmt[i].sizeimage < size) {
+ dev_err(dev, "%s: size mismatch on output\n",
+ __func__);
+ return -EINVAL;
+ }
+ }
+ }
+
+ return 0;
+}
+
+static int pispbe_node_queue_setup(struct vb2_queue *q, unsigned int *nbuffers,
+ unsigned int *nplanes, unsigned int sizes[],
+ struct device *alloc_devs[])
+{
+ struct pispbe_node *node = vb2_get_drv_priv(q);
+ struct pispbe_dev *pispbe = node->node_group->pispbe;
+
+ *nplanes = 1;
+ if (NODE_IS_MPLANE(node)) {
+ unsigned int i;
+
+ *nplanes = node->format.fmt.pix_mp.num_planes;
+ for (i = 0; i < *nplanes; i++) {
+ unsigned int size =
+ node->format.fmt.pix_mp.plane_fmt[i].sizeimage;
+ if (sizes[i] && sizes[i] < size) {
+ dev_err(pispbe->dev, "%s: size %u < %u\n",
+ __func__, sizes[i], size);
+ return -EINVAL;
+ }
+ sizes[i] = size;
+ }
+ } else if (NODE_IS_META(node)) {
+ sizes[0] = node->format.fmt.meta.buffersize;
+ /*
+ * Limit the config node buffer count to the number of internal
+ * buffers allocated.
+ */
+ if (node->id == CONFIG_NODE)
+ *nbuffers = min_t(unsigned int, *nbuffers,
+ PISP_BE_NUM_CONFIG_BUFFERS);
+ }
+
+ dev_dbg(pispbe->dev,
+ "Image (or metadata) size %u, nbuffers %u for node %s\n",
+ sizes[0], *nbuffers, NODE_NAME(node));
+
+ return 0;
+}
+
+static int pispbe_node_buffer_prepare(struct vb2_buffer *vb)
+{
+ struct pispbe_node *node = vb2_get_drv_priv(vb->vb2_queue);
+ struct pispbe_dev *pispbe = node->node_group->pispbe;
+ unsigned long size = 0;
+ unsigned int num_planes = NODE_IS_MPLANE(node) ?
+ node->format.fmt.pix_mp.num_planes : 1;
+ unsigned int i;
+
+ for (i = 0; i < num_planes; i++) {
+ size = NODE_IS_MPLANE(node)
+ ? node->format.fmt.pix_mp.plane_fmt[i].sizeimage
+ : node->format.fmt.meta.buffersize;
+
+ if (vb2_plane_size(vb, i) < size) {
+ dev_err(pispbe->dev,
+ "data will not fit into plane %d (%lu < %lu)\n",
+ i, vb2_plane_size(vb, i), size);
+ return -EINVAL;
+ }
+
+ vb2_set_plane_payload(vb, i, size);
+ }
+
+ if (node->id == CONFIG_NODE) {
+ void *dst = &node->node_group->config[vb->index];
+ void *src = vb2_plane_vaddr(vb, 0);
+
+ memcpy(dst, src, sizeof(struct pisp_be_tiles_config));
+ return pisp_be_validate_config(node->node_group, dst);
+ }
+
+ return 0;
+}
+
+static void pispbe_node_buffer_queue(struct vb2_buffer *buf)
+{
+ struct vb2_v4l2_buffer *vbuf =
+ container_of(buf, struct vb2_v4l2_buffer, vb2_buf);
+ struct pispbe_buffer *buffer =
+ container_of(vbuf, struct pispbe_buffer, vb);
+ struct pispbe_node *node = vb2_get_drv_priv(buf->vb2_queue);
+ struct pispbe_node_group *node_group = node->node_group;
+ struct pispbe_dev *pispbe = node->node_group->pispbe;
+ unsigned long flags;
+
+ dev_dbg(pispbe->dev, "%s: for node %s\n", __func__, NODE_NAME(node));
+ spin_lock_irqsave(&node->ready_lock, flags);
+ list_add_tail(&buffer->ready_list, &node->ready_queue);
+ spin_unlock_irqrestore(&node->ready_lock, flags);
+
+ /*
+ * Every time we add a buffer, check if there's now some work for the hw
+ * to do, but only for this client.
+ */
+ pispbe_schedule_one(node_group);
+}
+
+static int pispbe_node_start_streaming(struct vb2_queue *q, unsigned int count)
+{
+ unsigned long flags;
+ struct pispbe_node *node = vb2_get_drv_priv(q);
+ struct pispbe_node_group *node_group = node->node_group;
+ struct pispbe_dev *pispbe = node_group->pispbe;
+ int ret;
+
+ ret = pm_runtime_resume_and_get(pispbe->dev);
+ if (ret < 0)
+ return ret;
+
+ spin_lock_irqsave(&pispbe->hw_lock, flags);
+ node->node_group->streaming_map |= BIT(node->id);
+ spin_unlock_irqrestore(&pispbe->hw_lock, flags);
+
+ dev_dbg(pispbe->dev, "%s: for node %s (count %u)\n",
+ __func__, NODE_NAME(node), count);
+ dev_dbg(pispbe->dev, "Nodes streaming for this group now 0x%x\n",
+ node->node_group->streaming_map);
+
+ /* Maybe we're ready to run. */
+ pispbe_schedule_one(node_group);
+
+ return 0;
+}
+
+static void pispbe_node_stop_streaming(struct vb2_queue *q)
+{
+ struct pispbe_node *node = vb2_get_drv_priv(q);
+ struct pispbe_node_group *node_group = node->node_group;
+ struct pispbe_dev *pispbe = node_group->pispbe;
+ struct pispbe_buffer *buf;
+ unsigned long flags;
+
+ /*
+ * Now this is a bit awkward. In a simple M2M device we could just wait
+ * for all queued jobs to complete, but here there's a risk that a
+ * partial set of buffers was queued and cannot be run. For now, just
+ * cancel all buffers stuck in the "ready queue", then wait for any
+ * running job.
+ * XXX This may return buffers out of order.
+ */
+ dev_dbg(pispbe->dev, "%s: for node %s\n", __func__, NODE_NAME(node));
+ spin_lock_irqsave(&pispbe->hw_lock, flags);
+ do {
+ unsigned long flags1;
+
+ spin_lock_irqsave(&node->ready_lock, flags1);
+ buf = list_first_entry_or_null(&node->ready_queue,
+ struct pispbe_buffer,
+ ready_list);
+ if (buf) {
+ list_del(&buf->ready_list);
+ vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
+ }
+ spin_unlock_irqrestore(&node->ready_lock, flags1);
+ } while (buf);
+ spin_unlock_irqrestore(&pispbe->hw_lock, flags);
+
+ vb2_wait_for_all_buffers(&node->queue);
+
+ spin_lock_irqsave(&pispbe->hw_lock, flags);
+ node_group->streaming_map &= ~BIT(node->id);
+ spin_unlock_irqrestore(&pispbe->hw_lock, flags);
+
+ pm_runtime_mark_last_busy(pispbe->dev);
+ pm_runtime_put_autosuspend(pispbe->dev);
+
+ dev_dbg(pispbe->dev, "Nodes streaming for this group now 0x%x\n",
+ node_group->streaming_map);
+}
+
+static const struct vb2_ops pispbe_node_queue_ops = {
+ .queue_setup = pispbe_node_queue_setup,
+ .buf_prepare = pispbe_node_buffer_prepare,
+ .buf_queue = pispbe_node_buffer_queue,
+ .start_streaming = pispbe_node_start_streaming,
+ .stop_streaming = pispbe_node_stop_streaming,
+};
+
+static const struct v4l2_file_operations pispbe_fops = {
+ .owner = THIS_MODULE,
+ .open = v4l2_fh_open,
+ .release = vb2_fop_release,
+ .poll = vb2_fop_poll,
+ .unlocked_ioctl = video_ioctl2,
+ .mmap = vb2_fop_mmap
+};
+
+static int pispbe_node_querycap(struct file *file, void *priv,
+ struct v4l2_capability *cap)
+{
+ struct pispbe_node *node = video_drvdata(file);
+ struct pispbe_dev *pispbe = node->node_group->pispbe;
+
+ strscpy(cap->driver, PISPBE_NAME, sizeof(cap->driver));
+ strscpy(cap->card, PISPBE_NAME, sizeof(cap->card));
+ snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
+ dev_name(pispbe->dev));
+
+ cap->capabilities = V4L2_CAP_VIDEO_CAPTURE_MPLANE |
+ V4L2_CAP_VIDEO_OUTPUT_MPLANE |
+ V4L2_CAP_STREAMING | V4L2_CAP_DEVICE_CAPS |
+ V4L2_CAP_META_OUTPUT | V4L2_CAP_META_CAPTURE;
+ cap->device_caps = node->vfd.device_caps;
+
+ dev_dbg(pispbe->dev, "Caps for node %s: %x and %x (dev %x)\n",
+ NODE_NAME(node), cap->capabilities, cap->device_caps,
+ node->vfd.device_caps);
+ return 0;
+}
+
+static int pispbe_node_g_fmt_vid_cap(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ struct pispbe_node *node = video_drvdata(file);
+ struct pispbe_dev *pispbe = node->node_group->pispbe;
+
+ if (!NODE_IS_CAPTURE(node) || NODE_IS_META(node)) {
+ dev_err(pispbe->dev,
+ "Cannot get capture fmt for output node %s\n",
+ NODE_NAME(node));
+ return -EINVAL;
+ }
+ *f = node->format;
+ dev_dbg(pispbe->dev, "Get capture format for node %s\n",
+ NODE_NAME(node));
+ return 0;
+}
+
+static int pispbe_node_g_fmt_vid_out(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ struct pispbe_node *node = video_drvdata(file);
+ struct pispbe_dev *pispbe = node->node_group->pispbe;
+
+ if (NODE_IS_CAPTURE(node) || NODE_IS_META(node)) {
+ dev_err(pispbe->dev,
+ "Cannot get capture fmt for output node %s\n",
+ NODE_NAME(node));
+ return -EINVAL;
+ }
+ *f = node->format;
+ dev_dbg(pispbe->dev, "Get output format for node %s\n",
+ NODE_NAME(node));
+ return 0;
+}
+
+static int pispbe_node_g_fmt_meta_out(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ struct pispbe_node *node = video_drvdata(file);
+ struct pispbe_dev *pispbe = node->node_group->pispbe;
+
+ if (!NODE_IS_META(node) || NODE_IS_CAPTURE(node)) {
+ dev_err(pispbe->dev,
+ "Cannot get capture fmt for meta output node %s\n",
+ NODE_NAME(node));
+ return -EINVAL;
+ }
+ *f = node->format;
+ dev_dbg(pispbe->dev, "Get output format for meta node %s\n",
+ NODE_NAME(node));
+ return 0;
+}
+
+static int pispbe_node_g_fmt_meta_cap(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ struct pispbe_node *node = video_drvdata(file);
+ struct pispbe_dev *pispbe = node->node_group->pispbe;
+
+ if (!NODE_IS_META(node) || NODE_IS_OUTPUT(node)) {
+ dev_err(pispbe->dev,
+ "Cannot get capture fmt for meta output node %s\n",
+ NODE_NAME(node));
+ return -EINVAL;
+ }
+ *f = node->format;
+ dev_dbg(pispbe->dev, "Get output format for meta node %s\n",
+ NODE_NAME(node));
+ return 0;
+}
+
+static int verify_be_pix_format(const struct v4l2_format *f,
+ struct pispbe_node *node)
+{
+ struct pispbe_dev *pispbe = node->node_group->pispbe;
+ unsigned int nplanes = f->fmt.pix_mp.num_planes;
+ unsigned int i;
+
+ if (f->fmt.pix_mp.width == 0 || f->fmt.pix_mp.height == 0) {
+ dev_err(pispbe->dev, "Details incorrect for output node %s\n",
+ NODE_NAME(node));
+ return -EINVAL;
+ }
+
+ if (nplanes == 0 || nplanes > MAX_PLANES) {
+ dev_err(pispbe->dev,
+ "Bad number of planes for output node %s, req =%d\n",
+ NODE_NAME(node), nplanes);
+ return -EINVAL;
+ }
+
+ for (i = 0; i < nplanes; i++) {
+ const struct v4l2_plane_pix_format *p;
+
+ p = &f->fmt.pix_mp.plane_fmt[i];
+ if (p->bytesperline == 0 || p->sizeimage == 0) {
+ dev_err(pispbe->dev,
+ "Invalid plane %d for output node %s\n",
+ i, NODE_NAME(node));
+ return -EINVAL;
+ }
+ }
+
+ return 0;
+}
+
+static const struct pisp_be_format *find_format(unsigned int fourcc)
+{
+ const struct pisp_be_format *fmt;
+ unsigned int i;
+
+ for (i = 0; i < ARRAY_SIZE(supported_formats); i++) {
+ fmt = &supported_formats[i];
+ if (fmt->fourcc == fourcc)
+ return fmt;
+ }
+
+ return NULL;
+}
+
+static void set_plane_params(struct v4l2_format *f,
+ const struct pisp_be_format *fmt)
+{
+ unsigned int nplanes = f->fmt.pix_mp.num_planes;
+ unsigned int total_plane_factor = 0;
+ unsigned int i;
+
+ for (i = 0; i < MAX_PLANES; i++)
+ total_plane_factor += fmt->plane_factor[i];
+
+ for (i = 0; i < nplanes; i++) {
+ struct v4l2_plane_pix_format *p = &f->fmt.pix_mp.plane_fmt[i];
+ unsigned int bpl, plane_size;
+
+ bpl = (f->fmt.pix_mp.width * fmt->bit_depth) >> 3;
+ bpl = ALIGN(max(p->bytesperline, bpl), fmt->align);
+
+ plane_size = bpl * f->fmt.pix_mp.height *
+ (nplanes > 1 ? fmt->plane_factor[i] : total_plane_factor);
+ /*
+ * The shift is to divide out the plane_factor fixed point
+ * scaling of 8.
+ */
+ plane_size = max(p->sizeimage, plane_size >> 3);
+
+ p->bytesperline = bpl;
+ p->sizeimage = plane_size;
+ }
+}
+
+static int try_format(struct v4l2_format *f, struct pispbe_node *node)
+{
+ struct pispbe_dev *pispbe = node->node_group->pispbe;
+ const struct pisp_be_format *fmt;
+ unsigned int i;
+ bool is_rgb;
+ u32 pixfmt = f->fmt.pix_mp.pixelformat;
+
+ dev_dbg(pispbe->dev,
+ "%s: [%s] req %ux%u " V4L2_FOURCC_CONV ", planes %d\n",
+ __func__, NODE_NAME(node), f->fmt.pix_mp.width,
+ f->fmt.pix_mp.height, V4L2_FOURCC_CONV_ARGS(pixfmt),
+ f->fmt.pix_mp.num_planes);
+
+ if (pixfmt == V4L2_PIX_FMT_RPI_BE)
+ return verify_be_pix_format(f, node);
+
+ fmt = find_format(pixfmt);
+ if (!fmt)
+ fmt = find_format(V4L2_PIX_FMT_YUV420M);
+
+ f->fmt.pix_mp.pixelformat = fmt->fourcc;
+ f->fmt.pix_mp.num_planes = fmt->num_planes;
+ f->fmt.pix_mp.field = V4L2_FIELD_NONE;
+ f->fmt.pix_mp.width = max(min(f->fmt.pix_mp.width, 65536u),
+ PISP_BACK_END_MIN_TILE_WIDTH);
+ f->fmt.pix_mp.height = max(min(f->fmt.pix_mp.height, 65536u),
+ PISP_BACK_END_MIN_TILE_HEIGHT);
+
+ /*
+ * Fill in the actual colour space when the requested one was
+ * not supported. This also catches the case when the "default"
+ * colour space was requested (as that's never in the mask).
+ */
+ if (!(V4L2_COLORSPACE_MASK(f->fmt.pix_mp.colorspace) & fmt->colorspace_mask))
+ f->fmt.pix_mp.colorspace = fmt->colorspace_default;
+
+ /* In all cases, we only support the defaults for these: */
+ f->fmt.pix_mp.ycbcr_enc =
+ V4L2_MAP_YCBCR_ENC_DEFAULT(f->fmt.pix_mp.colorspace);
+ f->fmt.pix_mp.xfer_func =
+ V4L2_MAP_XFER_FUNC_DEFAULT(f->fmt.pix_mp.colorspace);
+
+ is_rgb = f->fmt.pix_mp.colorspace == V4L2_COLORSPACE_SRGB;
+ f->fmt.pix_mp.quantization =
+ V4L2_MAP_QUANTIZATION_DEFAULT(is_rgb, f->fmt.pix_mp.colorspace,
+ f->fmt.pix_mp.ycbcr_enc);
+
+ /* Set plane size and bytes/line for each plane. */
+ set_plane_params(f, fmt);
+
+ for (i = 0; i < f->fmt.pix_mp.num_planes; i++) {
+ dev_dbg(pispbe->dev,
+ "%s: [%s] calc plane %d, %ux%u, depth %u, bpl %u size %u\n",
+ __func__, NODE_NAME(node), i, f->fmt.pix_mp.width,
+ f->fmt.pix_mp.height, fmt->bit_depth,
+ f->fmt.pix_mp.plane_fmt[i].bytesperline,
+ f->fmt.pix_mp.plane_fmt[i].sizeimage);
+ }
+
+ return 0;
+}
+
+static int pispbe_node_try_fmt_vid_cap(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ struct pispbe_node *node = video_drvdata(file);
+ struct pispbe_dev *pispbe = node->node_group->pispbe;
+ int ret;
+
+ if (!NODE_IS_CAPTURE(node) || NODE_IS_META(node)) {
+ dev_err(pispbe->dev,
+ "Cannot set capture fmt for output node %s\n",
+ NODE_NAME(node));
+ return -EINVAL;
+ }
+
+ ret = try_format(f, node);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static int pispbe_node_try_fmt_vid_out(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ struct pispbe_node *node = video_drvdata(file);
+ struct pispbe_dev *pispbe = node->node_group->pispbe;
+ int ret;
+
+ if (!NODE_IS_OUTPUT(node) || NODE_IS_META(node)) {
+ dev_err(pispbe->dev,
+ "Cannot set capture fmt for output node %s\n",
+ NODE_NAME(node));
+ return -EINVAL;
+ }
+
+ ret = try_format(f, node);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static int pispbe_node_try_fmt_meta_out(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ struct pispbe_node *node = video_drvdata(file);
+ struct pispbe_dev *pispbe = node->node_group->pispbe;
+
+ if (!NODE_IS_META(node) || NODE_IS_CAPTURE(node)) {
+ dev_err(pispbe->dev,
+ "Cannot set capture fmt for meta output node %s\n",
+ NODE_NAME(node));
+ return -EINVAL;
+ }
+
+ f->fmt.meta.dataformat = V4L2_META_FMT_RPI_BE_CFG;
+ f->fmt.meta.buffersize = sizeof(struct pisp_be_tiles_config);
+
+ return 0;
+}
+
+static int pispbe_node_try_fmt_meta_cap(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ struct pispbe_node *node = video_drvdata(file);
+ struct pispbe_dev *pispbe = node->node_group->pispbe;
+
+ if (!NODE_IS_META(node) || NODE_IS_OUTPUT(node)) {
+ dev_err(pispbe->dev,
+ "Cannot set capture fmt for meta output node %s\n",
+ NODE_NAME(node));
+ return -EINVAL;
+ }
+
+ f->fmt.meta.dataformat = V4L2_PIX_FMT_RPI_BE;
+ if (!f->fmt.meta.buffersize)
+ f->fmt.meta.buffersize = BIT(20);
+
+ return 0;
+}
+
+static int pispbe_node_s_fmt_vid_cap(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ struct pispbe_node *node = video_drvdata(file);
+ struct pispbe_dev *pispbe = node->node_group->pispbe;
+ int ret = pispbe_node_try_fmt_vid_cap(file, priv, f);
+
+ if (ret < 0)
+ return ret;
+
+ node->format = *f;
+ node->pisp_format = find_format(f->fmt.pix_mp.pixelformat);
+
+ dev_dbg(pispbe->dev,
+ "Set capture format for node %s to " V4L2_FOURCC_CONV "\n",
+ NODE_NAME(node),
+ V4L2_FOURCC_CONV_ARGS(f->fmt.pix_mp.pixelformat));
+ return 0;
+}
+
+static int pispbe_node_s_fmt_vid_out(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ struct pispbe_node *node = video_drvdata(file);
+ struct pispbe_dev *pispbe = node->node_group->pispbe;
+ int ret = pispbe_node_try_fmt_vid_out(file, priv, f);
+
+ if (ret < 0)
+ return ret;
+
+ node->format = *f;
+ node->pisp_format = find_format(f->fmt.pix_mp.pixelformat);
+
+ dev_dbg(pispbe->dev,
+ "Set output format for node %s to " V4L2_FOURCC_CONV "\n",
+ NODE_NAME(node),
+ V4L2_FOURCC_CONV_ARGS(f->fmt.pix_mp.pixelformat));
+ return 0;
+}
+
+static int pispbe_node_s_fmt_meta_out(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ struct pispbe_node *node = video_drvdata(file);
+ struct pispbe_dev *pispbe = node->node_group->pispbe;
+ int ret = pispbe_node_try_fmt_meta_out(file, priv, f);
+
+ if (ret < 0)
+ return ret;
+
+ node->format = *f;
+ node->pisp_format = &meta_out_supported_formats[0];
+
+ dev_dbg(pispbe->dev,
+ "Set output format for meta node %s to " V4L2_FOURCC_CONV "\n",
+ NODE_NAME(node),
+ V4L2_FOURCC_CONV_ARGS(f->fmt.meta.dataformat));
+ return 0;
+}
+
+static int pispbe_node_s_fmt_meta_cap(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ struct pispbe_node *node = video_drvdata(file);
+ struct pispbe_dev *pispbe = node->node_group->pispbe;
+ int ret = pispbe_node_try_fmt_meta_cap(file, priv, f);
+
+ if (ret < 0)
+ return ret;
+
+ node->format = *f;
+ node->pisp_format = find_format(f->fmt.meta.dataformat);
+
+ dev_dbg(pispbe->dev,
+ "Set capture format for meta node %s to " V4L2_FOURCC_CONV "\n",
+ NODE_NAME(node),
+ V4L2_FOURCC_CONV_ARGS(f->fmt.meta.dataformat));
+ return 0;
+}
+
+static int pispbe_node_enum_fmt(struct file *file, void *priv,
+ struct v4l2_fmtdesc *f)
+{
+ struct pispbe_node *node = video_drvdata(file);
+
+ if (f->type != node->queue.type)
+ return -EINVAL;
+
+ if (NODE_IS_META(node)) {
+ if (f->index)
+ return -EINVAL;
+
+ if (NODE_IS_OUTPUT(node))
+ f->pixelformat = V4L2_META_FMT_RPI_BE_CFG;
+ else
+ f->pixelformat = V4L2_PIX_FMT_RPI_BE;
+ f->flags = 0;
+ return 0;
+ }
+
+ if (f->index >= ARRAY_SIZE(supported_formats))
+ return -EINVAL;
+
+ f->pixelformat = supported_formats[f->index].fourcc;
+ f->flags = 0;
+
+ return 0;
+}
+
+static int pispbe_enum_framesizes(struct file *file, void *priv,
+ struct v4l2_frmsizeenum *fsize)
+{
+ struct pispbe_node *node = video_drvdata(file);
+ struct pispbe_dev *pispbe = node->node_group->pispbe;
+
+ if (NODE_IS_META(node) || fsize->index)
+ return -EINVAL;
+
+ if (!find_format(fsize->pixel_format)) {
+ dev_err(pispbe->dev, "Invalid pixel code: %x\n",
+ fsize->pixel_format);
+ return -EINVAL;
+ }
+
+ fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE;
+ fsize->stepwise.min_width = 32;
+ fsize->stepwise.max_width = 65535;
+ fsize->stepwise.step_width = 2;
+
+ fsize->stepwise.min_height = 32;
+ fsize->stepwise.max_height = 65535;
+ fsize->stepwise.step_height = 2;
+
+ return 0;
+}
+
+static int pispbe_node_streamon(struct file *file, void *priv,
+ enum v4l2_buf_type type)
+{
+ struct pispbe_node *node = video_drvdata(file);
+ struct pispbe_dev *pispbe = node->node_group->pispbe;
+
+ /* Do we need a node->stream_lock mutex? */
+
+ dev_dbg(pispbe->dev, "Stream on for node %s\n", NODE_NAME(node));
+
+ /* Do we care about the type? Each node has only one queue. */
+
+ INIT_LIST_HEAD(&node->ready_queue);
+
+ /* locking should be handled by the queue->lock? */
+ return vb2_streamon(&node->queue, type);
+}
+
+static int pispbe_node_streamoff(struct file *file, void *priv,
+ enum v4l2_buf_type type)
+{
+ struct pispbe_node *node = video_drvdata(file);
+
+ return vb2_streamoff(&node->queue, type);
+}
+
+static const struct v4l2_ioctl_ops pispbe_node_ioctl_ops = {
+ .vidioc_querycap = pispbe_node_querycap,
+ .vidioc_g_fmt_vid_cap_mplane = pispbe_node_g_fmt_vid_cap,
+ .vidioc_g_fmt_vid_out_mplane = pispbe_node_g_fmt_vid_out,
+ .vidioc_g_fmt_meta_out = pispbe_node_g_fmt_meta_out,
+ .vidioc_g_fmt_meta_cap = pispbe_node_g_fmt_meta_cap,
+ .vidioc_try_fmt_vid_cap_mplane = pispbe_node_try_fmt_vid_cap,
+ .vidioc_try_fmt_vid_out_mplane = pispbe_node_try_fmt_vid_out,
+ .vidioc_try_fmt_meta_out = pispbe_node_try_fmt_meta_out,
+ .vidioc_try_fmt_meta_cap = pispbe_node_try_fmt_meta_cap,
+ .vidioc_s_fmt_vid_cap_mplane = pispbe_node_s_fmt_vid_cap,
+ .vidioc_s_fmt_vid_out_mplane = pispbe_node_s_fmt_vid_out,
+ .vidioc_s_fmt_meta_out = pispbe_node_s_fmt_meta_out,
+ .vidioc_s_fmt_meta_cap = pispbe_node_s_fmt_meta_cap,
+ .vidioc_enum_fmt_vid_cap = pispbe_node_enum_fmt,
+ .vidioc_enum_fmt_vid_out = pispbe_node_enum_fmt,
+ .vidioc_enum_fmt_meta_cap = pispbe_node_enum_fmt,
+ .vidioc_enum_fmt_meta_out = pispbe_node_enum_fmt,
+ .vidioc_enum_framesizes = pispbe_enum_framesizes,
+ .vidioc_create_bufs = vb2_ioctl_create_bufs,
+ .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
+ .vidioc_querybuf = vb2_ioctl_querybuf,
+ .vidioc_qbuf = vb2_ioctl_qbuf,
+ .vidioc_dqbuf = vb2_ioctl_dqbuf,
+ .vidioc_expbuf = vb2_ioctl_expbuf,
+ .vidioc_reqbufs = vb2_ioctl_reqbufs,
+ .vidioc_streamon = pispbe_node_streamon,
+ .vidioc_streamoff = pispbe_node_streamoff,
+};
+
+static const struct video_device pispbe_videodev = {
+ .name = PISPBE_NAME,
+ .vfl_dir = VFL_DIR_M2M, /* gets overwritten */
+ .fops = &pispbe_fops,
+ .ioctl_ops = &pispbe_node_ioctl_ops,
+ .minor = -1,
+ .release = video_device_release_empty,
+};
+
+static void node_set_default_format(struct pispbe_node *node)
+{
+ if (NODE_IS_META(node) && NODE_IS_OUTPUT(node)) {
+ /* Config node */
+ struct v4l2_format *f = &node->format;
+
+ f->fmt.meta.dataformat = V4L2_META_FMT_RPI_BE_CFG;
+ f->fmt.meta.buffersize = sizeof(struct pisp_be_tiles_config);
+ f->type = node->buf_type;
+ } else if (NODE_IS_META(node) && NODE_IS_CAPTURE(node)) {
+ /* HOG output node */
+ struct v4l2_format *f = &node->format;
+
+ f->fmt.meta.dataformat = V4L2_PIX_FMT_RPI_BE;
+ f->fmt.meta.buffersize = BIT(20);
+ f->type = node->buf_type;
+ } else {
+ struct v4l2_format f = {0};
+
+ f.fmt.pix_mp.pixelformat = V4L2_PIX_FMT_YUV420M;
+ f.fmt.pix_mp.width = 1920;
+ f.fmt.pix_mp.height = 1080;
+ f.type = node->buf_type;
+ try_format(&f, node);
+ node->format = f;
+ }
+
+ node->pisp_format = find_format(node->format.fmt.pix_mp.pixelformat);
+}
+
+/*
+ * Initialise a struct pispbe_node and register it as /dev/video<N>
+ * to represent one of the PiSP Back End's input or output streams.
+ */
+static int
+pispbe_init_node(struct pispbe_node_group *node_group, unsigned int id)
+{
+ bool output = NODE_DESC_IS_OUTPUT(&node_desc[id]);
+ struct pispbe_node *node = &node_group->node[id];
+ struct pispbe_dev *pispbe = node_group->pispbe;
+ struct media_entity *entity = &node->vfd.entity;
+ struct video_device *vdev = &node->vfd;
+ struct vb2_queue *q = &node->queue;
+ int ret;
+
+ node->id = id;
+ node->node_group = node_group;
+ node->buf_type = node_desc[id].buf_type;
+
+ mutex_init(&node->node_lock);
+ mutex_init(&node->queue_lock);
+ INIT_LIST_HEAD(&node->ready_queue);
+ spin_lock_init(&node->ready_lock);
+
+ node->format.type = node->buf_type;
+ node_set_default_format(node);
+
+ q->type = node->buf_type;
+ q->io_modes = VB2_MMAP | VB2_DMABUF;
+ q->mem_ops = &vb2_dma_contig_memops;
+ q->drv_priv = node;
+ q->ops = &pispbe_node_queue_ops;
+ q->buf_struct_size = sizeof(struct pispbe_buffer);
+ q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
+ q->dev = node->node_group->pispbe->dev;
+ /* get V4L2 to handle node->queue locking */
+ q->lock = &node->queue_lock;
+
+ ret = vb2_queue_init(q);
+ if (ret < 0) {
+ dev_err(pispbe->dev, "vb2_queue_init failed\n");
+ return ret;
+ }
+
+ *vdev = pispbe_videodev; /* default initialization */
+ strscpy(vdev->name, node_desc[id].ent_name, sizeof(vdev->name));
+ vdev->v4l2_dev = &node_group->v4l2_dev;
+ vdev->vfl_dir = output ? VFL_DIR_TX : VFL_DIR_RX;
+ /* get V4L2 to serialise our ioctls */
+ vdev->lock = &node->node_lock;
+ vdev->queue = &node->queue;
+ vdev->device_caps = V4L2_CAP_STREAMING | node_desc[id].caps;
+
+ node->pad.flags = output ? MEDIA_PAD_FL_SOURCE : MEDIA_PAD_FL_SINK;
+ ret = media_entity_pads_init(entity, 1, &node->pad);
+ if (ret) {
+ dev_err(pispbe->dev,
+ "Failed to register media pads for %s device node\n",
+ NODE_NAME(node));
+ goto err_unregister_queue;
+ }
+
+ ret = video_register_device(vdev, VFL_TYPE_VIDEO,
+ PISPBE_VIDEO_NODE_OFFSET);
+ if (ret) {
+ dev_err(pispbe->dev,
+ "Failed to register video %s device node\n",
+ NODE_NAME(node));
+ goto err_unregister_queue;
+ }
+ video_set_drvdata(vdev, node);
+
+ if (output)
+ ret = media_create_pad_link(entity, 0, &node_group->sd.entity,
+ id, MEDIA_LNK_FL_IMMUTABLE |
+ MEDIA_LNK_FL_ENABLED);
+ else
+ ret = media_create_pad_link(&node_group->sd.entity, id, entity,
+ 0, MEDIA_LNK_FL_IMMUTABLE |
+ MEDIA_LNK_FL_ENABLED);
+ if (ret)
+ goto err_unregister_video_dev;
+
+ dev_info(pispbe->dev,
+ "%s device node registered as /dev/video%d\n",
+ NODE_NAME(node), node->vfd.num);
+ return 0;
+
+err_unregister_video_dev:
+ video_unregister_device(&node->vfd);
+err_unregister_queue:
+ vb2_queue_release(&node->queue);
+ return ret;
+}
+
+static const struct v4l2_subdev_pad_ops pispbe_pad_ops = {
+ .link_validate = v4l2_subdev_link_validate_default,
+};
+
+static const struct v4l2_subdev_ops pispbe_sd_ops = {
+ .pad = &pispbe_pad_ops,
+};
+
+static int pispbe_init_subdev(struct pispbe_node_group *node_group)
+{
+ struct pispbe_dev *pispbe = node_group->pispbe;
+ struct v4l2_subdev *sd = &node_group->sd;
+ unsigned int i;
+ int ret;
+
+ v4l2_subdev_init(sd, &pispbe_sd_ops);
+ sd->entity.function = MEDIA_ENT_F_PROC_VIDEO_PIXEL_FORMATTER;
+ sd->owner = THIS_MODULE;
+ sd->dev = pispbe->dev;
+ strscpy(sd->name, PISPBE_NAME, sizeof(sd->name));
+
+ for (i = 0; i < PISPBE_NUM_NODES; i++)
+ node_group->pad[i].flags =
+ NODE_DESC_IS_OUTPUT(&node_desc[i]) ?
+ MEDIA_PAD_FL_SINK : MEDIA_PAD_FL_SOURCE;
+
+ ret = media_entity_pads_init(&sd->entity, PISPBE_NUM_NODES,
+ node_group->pad);
+ if (ret)
+ goto error;
+
+ ret = v4l2_device_register_subdev(&node_group->v4l2_dev, sd);
+ if (ret)
+ goto error;
+
+ return 0;
+
+error:
+ media_entity_cleanup(&sd->entity);
+ return ret;
+}
+
+static int pispbe_init_group(struct pispbe_dev *pispbe, unsigned int id)
+{
+ struct pispbe_node_group *node_group = &pispbe->node_group[id];
+ struct v4l2_device *v4l2_dev;
+ struct media_device *mdev;
+ unsigned int num_registered = 0;
+ int ret;
+
+ node_group->id = id;
+ node_group->pispbe = pispbe;
+ node_group->streaming_map = 0;
+
+ dev_info(pispbe->dev, "Register nodes for group %u\n", id);
+
+ /* Register v4l2_device and media_device */
+ mdev = &node_group->mdev;
+ mdev->hw_revision = node_group->pispbe->hw_version;
+ mdev->dev = node_group->pispbe->dev;
+ strscpy(mdev->model, PISPBE_NAME, sizeof(mdev->model));
+ snprintf(mdev->bus_info, sizeof(mdev->bus_info),
+ "platform:%s", dev_name(node_group->pispbe->dev));
+ media_device_init(mdev);
+
+ v4l2_dev = &node_group->v4l2_dev;
+ v4l2_dev->mdev = &node_group->mdev;
+ strscpy(v4l2_dev->name, PISPBE_NAME, sizeof(v4l2_dev->name));
+
+ ret = v4l2_device_register(pispbe->dev, &node_group->v4l2_dev);
+ if (ret)
+ goto err_media_dev_cleanup;
+
+ /* Register the PISPBE subdevice. */
+ ret = pispbe_init_subdev(node_group);
+ if (ret)
+ goto err_unregister_v4l2;
+
+ /* Create device video nodes */
+ for (; num_registered < PISPBE_NUM_NODES; num_registered++) {
+ ret = pispbe_init_node(node_group, num_registered);
+ if (ret)
+ goto err_unregister_nodes;
+ }
+
+ ret = media_device_register(mdev);
+ if (ret)
+ goto err_unregister_nodes;
+
+ node_group->config =
+ dma_alloc_coherent(pispbe->dev,
+ sizeof(struct pisp_be_tiles_config) *
+ PISP_BE_NUM_CONFIG_BUFFERS,
+ &node_group->config_dma_addr, GFP_KERNEL);
+ if (!node_group->config) {
+ dev_err(pispbe->dev, "Unable to allocate cached config buffers.\n");
+ ret = -ENOMEM;
+ goto err_unregister_mdev;
+ }
+
+ return 0;
+
+err_unregister_mdev:
+ media_device_unregister(mdev);
+err_unregister_nodes:
+ while (num_registered-- > 0) {
+ video_unregister_device(&node_group->node[num_registered].vfd);
+ vb2_queue_release(&node_group->node[num_registered].queue);
+ }
+ v4l2_device_unregister_subdev(&node_group->sd);
+ media_entity_cleanup(&node_group->sd.entity);
+err_unregister_v4l2:
+ v4l2_device_unregister(v4l2_dev);
+err_media_dev_cleanup:
+ media_device_cleanup(mdev);
+ return ret;
+}
+
+static void pispbe_destroy_node_group(struct pispbe_node_group *node_group)
+{
+ struct pispbe_dev *pispbe = node_group->pispbe;
+ int i;
+
+ if (node_group->config) {
+ dma_free_coherent(node_group->pispbe->dev,
+ sizeof(struct pisp_be_tiles_config) *
+ PISP_BE_NUM_CONFIG_BUFFERS,
+ node_group->config,
+ node_group->config_dma_addr);
+ }
+
+ dev_info(pispbe->dev, "Unregister from media controller\n");
+
+ v4l2_device_unregister_subdev(&node_group->sd);
+ media_entity_cleanup(&node_group->sd.entity);
+ media_device_unregister(&node_group->mdev);
+
+ for (i = PISPBE_NUM_NODES - 1; i >= 0; i--) {
+ video_unregister_device(&node_group->node[i].vfd);
+ vb2_queue_release(&node_group->node[i].queue);
+ }
+
+ media_device_cleanup(&node_group->mdev);
+ v4l2_device_unregister(&node_group->v4l2_dev);
+}
+
+static int pispbe_runtime_suspend(struct device *dev)
+{
+ struct pispbe_dev *pispbe = dev_get_drvdata(dev);
+
+ clk_disable_unprepare(pispbe->clk);
+
+ return 0;
+}
+
+static int pispbe_runtime_resume(struct device *dev)
+{
+ struct pispbe_dev *pispbe = dev_get_drvdata(dev);
+ int ret;
+
+ ret = clk_prepare_enable(pispbe->clk);
+ if (ret) {
+ dev_err(dev, "Unable to enable clock\n");
+ return ret;
+ }
+
+ dev_dbg(dev, "%s: Enabled clock, rate=%lu\n",
+ __func__, clk_get_rate(pispbe->clk));
+
+ return 0;
+}
+
+/*
+ * Probe the ISP-BE hardware block, as a single platform device.
+ * This will instantiate multiple "node groups" each with many device nodes.
+ */
+static int pispbe_probe(struct platform_device *pdev)
+{
+ unsigned int num_groups = 0;
+ struct pispbe_dev *pispbe;
+ int ret;
+
+ pispbe = devm_kzalloc(&pdev->dev, sizeof(*pispbe), GFP_KERNEL);
+ if (!pispbe)
+ return -ENOMEM;
+
+ dev_set_drvdata(&pdev->dev, pispbe);
+ pispbe->dev = &pdev->dev;
+ platform_set_drvdata(pdev, pispbe);
+
+ pispbe->be_reg_base = devm_platform_ioremap_resource(pdev, 0);
+ if (IS_ERR(pispbe->be_reg_base)) {
+ dev_err(&pdev->dev, "Failed to get ISP-BE registers address\n");
+ return PTR_ERR(pispbe->be_reg_base);
+ }
+
+ pispbe->irq = platform_get_irq(pdev, 0);
+ if (pispbe->irq <= 0) {
+ dev_err(&pdev->dev, "No IRQ resource\n");
+ return -EINVAL;
+ }
+
+ ret = devm_request_irq(&pdev->dev, pispbe->irq, pispbe_isr, 0,
+ PISPBE_NAME, pispbe);
+ if (ret) {
+ dev_err(&pdev->dev, "Unable to request interrupt\n");
+ return ret;
+ }
+
+ ret = dma_set_mask_and_coherent(pispbe->dev, DMA_BIT_MASK(36));
+ if (ret)
+ return ret;
+
+ pispbe->clk = devm_clk_get(&pdev->dev, NULL);
+ if (IS_ERR(pispbe->clk))
+ return dev_err_probe(&pdev->dev, PTR_ERR(pispbe->clk),
+ "Failed to get clock");
+
+ /* Hardware initialisation */
+ pm_runtime_set_autosuspend_delay(pispbe->dev, 200);
+ pm_runtime_use_autosuspend(pispbe->dev);
+ pm_runtime_enable(pispbe->dev);
+
+ ret = pm_runtime_resume_and_get(pispbe->dev);
+ if (ret)
+ goto pm_runtime_disable_err;
+
+ pispbe->hw_busy = 0;
+ spin_lock_init(&pispbe->hw_lock);
+ ret = hw_init(pispbe);
+ if (ret)
+ goto pm_runtime_put_err;
+
+ /*
+ * Initialise and register devices for each node_group, including media
+ * device
+ */
+ for (num_groups = 0;
+ num_groups < PISPBE_NUM_NODE_GROUPS;
+ num_groups++) {
+ ret = pispbe_init_group(pispbe, num_groups);
+ if (ret)
+ goto disable_nodes_err;
+ }
+
+ pm_runtime_mark_last_busy(pispbe->dev);
+ pm_runtime_put_autosuspend(pispbe->dev);
+
+ return 0;
+
+disable_nodes_err:
+ while (num_groups-- > 0)
+ pispbe_destroy_node_group(&pispbe->node_group[num_groups]);
+pm_runtime_put_err:
+ pm_runtime_put(pispbe->dev);
+pm_runtime_disable_err:
+ pm_runtime_dont_use_autosuspend(pispbe->dev);
+ pm_runtime_disable(pispbe->dev);
+
+ dev_err(&pdev->dev, "%s: returning %d", __func__, ret);
+
+ return ret;
+}
+
+static int pispbe_remove(struct platform_device *pdev)
+{
+ struct pispbe_dev *pispbe = platform_get_drvdata(pdev);
+ int i;
+
+ for (i = PISPBE_NUM_NODE_GROUPS - 1; i >= 0; i--)
+ pispbe_destroy_node_group(&pispbe->node_group[i]);
+
+ pm_runtime_dont_use_autosuspend(pispbe->dev);
+ pm_runtime_disable(pispbe->dev);
+
+ return 0;
+}
+
+static const struct dev_pm_ops pispbe_pm_ops = {
+ SET_RUNTIME_PM_OPS(pispbe_runtime_suspend, pispbe_runtime_resume, NULL)
+};
+
+static const struct of_device_id pispbe_of_match[] = {
+ {
+ .compatible = "raspberrypi,pispbe",
+ },
+ { /* sentinel */ },
+};
+MODULE_DEVICE_TABLE(of, pispbe_of_match);
+
+static struct platform_driver pispbe_pdrv = {
+ .probe = pispbe_probe,
+ .remove = pispbe_remove,
+ .driver = {
+ .name = PISPBE_NAME,
+ .of_match_table = pispbe_of_match,
+ .pm = &pispbe_pm_ops,
+ },
+};
+
+module_platform_driver(pispbe_pdrv);
--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * PiSP Back End configuration definitions.
+ *
+ * Copyright (C) 2021 - Raspberry Pi Ltd
+ *
+ */
+#ifndef _PISP_BE_CONFIG_H_
+#define _PISP_BE_CONFIG_H_
+
+#include <linux/types.h>
+
+#include <media/raspberrypi/pisp_common.h>
+
+/* byte alignment for inputs */
+#define PISP_BACK_END_INPUT_ALIGN 4u
+/* alignment for compressed inputs */
+#define PISP_BACK_END_COMPRESSED_ALIGN 8u
+/* minimum required byte alignment for outputs */
+#define PISP_BACK_END_OUTPUT_MIN_ALIGN 16u
+/* preferred byte alignment for outputs */
+#define PISP_BACK_END_OUTPUT_MAX_ALIGN 64u
+
+/* minimum allowed tile width anywhere in the pipeline */
+#define PISP_BACK_END_MIN_TILE_WIDTH 16u
+/* minimum allowed tile width anywhere in the pipeline */
+#define PISP_BACK_END_MIN_TILE_HEIGHT 16u
+
+#define PISP_BACK_END_NUM_OUTPUTS 2
+#define PISP_BACK_END_HOG_OUTPUT 1
+
+#define PISP_BACK_END_NUM_TILES 64
+
+enum pisp_be_bayer_enable {
+ PISP_BE_BAYER_ENABLE_INPUT = 0x000001,
+ PISP_BE_BAYER_ENABLE_DECOMPRESS = 0x000002,
+ PISP_BE_BAYER_ENABLE_DPC = 0x000004,
+ PISP_BE_BAYER_ENABLE_GEQ = 0x000008,
+ PISP_BE_BAYER_ENABLE_TDN_INPUT = 0x000010,
+ PISP_BE_BAYER_ENABLE_TDN_DECOMPRESS = 0x000020,
+ PISP_BE_BAYER_ENABLE_TDN = 0x000040,
+ PISP_BE_BAYER_ENABLE_TDN_COMPRESS = 0x000080,
+ PISP_BE_BAYER_ENABLE_TDN_OUTPUT = 0x000100,
+ PISP_BE_BAYER_ENABLE_SDN = 0x000200,
+ PISP_BE_BAYER_ENABLE_BLC = 0x000400,
+ PISP_BE_BAYER_ENABLE_STITCH_INPUT = 0x000800,
+ PISP_BE_BAYER_ENABLE_STITCH_DECOMPRESS = 0x001000,
+ PISP_BE_BAYER_ENABLE_STITCH = 0x002000,
+ PISP_BE_BAYER_ENABLE_STITCH_COMPRESS = 0x004000,
+ PISP_BE_BAYER_ENABLE_STITCH_OUTPUT = 0x008000,
+ PISP_BE_BAYER_ENABLE_WBG = 0x010000,
+ PISP_BE_BAYER_ENABLE_CDN = 0x020000,
+ PISP_BE_BAYER_ENABLE_LSC = 0x040000,
+ PISP_BE_BAYER_ENABLE_TONEMAP = 0x080000,
+ PISP_BE_BAYER_ENABLE_CAC = 0x100000,
+ PISP_BE_BAYER_ENABLE_DEBIN = 0x200000,
+ PISP_BE_BAYER_ENABLE_DEMOSAIC = 0x400000,
+};
+
+enum pisp_be_rgb_enable {
+ PISP_BE_RGB_ENABLE_INPUT = 0x000001,
+ PISP_BE_RGB_ENABLE_CCM = 0x000002,
+ PISP_BE_RGB_ENABLE_SAT_CONTROL = 0x000004,
+ PISP_BE_RGB_ENABLE_YCBCR = 0x000008,
+ PISP_BE_RGB_ENABLE_FALSE_COLOUR = 0x000010,
+ PISP_BE_RGB_ENABLE_SHARPEN = 0x000020,
+ /* Preferred colours would occupy 0x000040 */
+ PISP_BE_RGB_ENABLE_YCBCR_INVERSE = 0x000080,
+ PISP_BE_RGB_ENABLE_GAMMA = 0x000100,
+ PISP_BE_RGB_ENABLE_CSC0 = 0x000200,
+ PISP_BE_RGB_ENABLE_CSC1 = 0x000400,
+ PISP_BE_RGB_ENABLE_DOWNSCALE0 = 0x001000,
+ PISP_BE_RGB_ENABLE_DOWNSCALE1 = 0x002000,
+ PISP_BE_RGB_ENABLE_RESAMPLE0 = 0x008000,
+ PISP_BE_RGB_ENABLE_RESAMPLE1 = 0x010000,
+ PISP_BE_RGB_ENABLE_OUTPUT0 = 0x040000,
+ PISP_BE_RGB_ENABLE_OUTPUT1 = 0x080000,
+ PISP_BE_RGB_ENABLE_HOG = 0x200000
+};
+
+#define PISP_BE_RGB_ENABLE_CSC(i) (PISP_BE_RGB_ENABLE_CSC0 << (i))
+#define PISP_BE_RGB_ENABLE_DOWNSCALE(i) (PISP_BE_RGB_ENABLE_DOWNSCALE0 << (i))
+#define PISP_BE_RGB_ENABLE_RESAMPLE(i) (PISP_BE_RGB_ENABLE_RESAMPLE0 << (i))
+#define PISP_BE_RGB_ENABLE_OUTPUT(i) (PISP_BE_RGB_ENABLE_OUTPUT0 << (i))
+
+/*
+ * We use the enable flags to show when blocks are "dirty", but we need some
+ * extra ones too.
+ */
+enum pisp_be_dirty {
+ PISP_BE_DIRTY_GLOBAL = 0x0001,
+ PISP_BE_DIRTY_SH_FC_COMBINE = 0x0002,
+ PISP_BE_DIRTY_CROP = 0x0004
+};
+
+struct pisp_be_global_config {
+ u32 bayer_enables;
+ u32 rgb_enables;
+ u8 bayer_order;
+ u8 pad[3];
+};
+
+struct pisp_be_input_buffer_config {
+ /* low 32 bits followed by high 32 bits (for each of up to 3 planes) */
+ u32 addr[3][2];
+};
+
+struct pisp_be_dpc_config {
+ u8 coeff_level;
+ u8 coeff_range;
+ u8 pad;
+#define PISP_BE_DPC_FLAG_FOLDBACK 1
+ u8 flags;
+};
+
+struct pisp_be_geq_config {
+ u16 offset;
+#define PISP_BE_GEQ_SHARPER BIT(15)
+#define PISP_BE_GEQ_SLOPE ((1 << 10) - 1)
+ /* top bit is the "sharper" flag, slope value is bottom 10 bits */
+ u16 slope_sharper;
+ u16 min;
+ u16 max;
+};
+
+struct pisp_be_tdn_input_buffer_config {
+ /* low 32 bits followed by high 32 bits */
+ u32 addr[2];
+};
+
+struct pisp_be_tdn_config {
+ u16 black_level;
+ u16 ratio;
+ u16 noise_constant;
+ u16 noise_slope;
+ u16 threshold;
+ u8 reset;
+ u8 pad;
+};
+
+struct pisp_be_tdn_output_buffer_config {
+ /* low 32 bits followed by high 32 bits */
+ u32 addr[2];
+};
+
+struct pisp_be_sdn_config {
+ u16 black_level;
+ u8 leakage;
+ u8 pad;
+ u16 noise_constant;
+ u16 noise_slope;
+ u16 noise_constant2;
+ u16 noise_slope2;
+};
+
+struct pisp_be_stitch_input_buffer_config {
+ /* low 32 bits followed by high 32 bits */
+ u32 addr[2];
+};
+
+#define PISP_BE_STITCH_STREAMING_LONG 0x8000
+#define PISP_BE_STITCH_EXPOSURE_RATIO_MASK 0x7fff
+
+struct pisp_be_stitch_config {
+ u16 threshold_lo;
+ u8 threshold_diff_power;
+ u8 pad;
+
+ /* top bit indicates whether streaming input is the long exposure */
+ u16 exposure_ratio;
+
+ u8 motion_threshold_256;
+ u8 motion_threshold_recip;
+};
+
+struct pisp_be_stitch_output_buffer_config {
+ /* low 32 bits followed by high 32 bits */
+ u32 addr[2];
+};
+
+struct pisp_be_cdn_config {
+ u16 thresh;
+ u8 iir_strength;
+ u8 g_adjust;
+};
+
+#define PISP_BE_LSC_LOG_GRID_SIZE 5
+#define PISP_BE_LSC_GRID_SIZE (1 << PISP_BE_LSC_LOG_GRID_SIZE)
+#define PISP_BE_LSC_STEP_PRECISION 18
+
+struct pisp_be_lsc_config {
+ /* (1<<18) / grid_cell_width */
+ u16 grid_step_x;
+ /* (1<<18) / grid_cell_height */
+ u16 grid_step_y;
+ /* RGB gains jointly encoded in 32 bits */
+ u32 lut_packed[PISP_BE_LSC_GRID_SIZE + 1]
+ [PISP_BE_LSC_GRID_SIZE + 1];
+};
+
+struct pisp_be_lsc_extra {
+ u16 offset_x;
+ u16 offset_y;
+};
+
+#define PISP_BE_CAC_LOG_GRID_SIZE 3
+#define PISP_BE_CAC_GRID_SIZE (1 << PISP_BE_CAC_LOG_GRID_SIZE)
+#define PISP_BE_CAC_STEP_PRECISION 20
+
+struct pisp_be_cac_config {
+ /* (1<<20) / grid_cell_width */
+ u16 grid_step_x;
+ /* (1<<20) / grid_cell_height */
+ u16 grid_step_y;
+ /* [gridy][gridx][rb][xy] */
+ s8 lut[PISP_BE_CAC_GRID_SIZE + 1][PISP_BE_CAC_GRID_SIZE + 1][2][2];
+};
+
+struct pisp_be_cac_extra {
+ u16 offset_x;
+ u16 offset_y;
+};
+
+#define PISP_BE_DEBIN_NUM_COEFFS 4
+
+struct pisp_be_debin_config {
+ s8 coeffs[PISP_BE_DEBIN_NUM_COEFFS];
+ s8 h_enable;
+ s8 v_enable;
+ s8 pad[2];
+};
+
+#define PISP_BE_TONEMAP_LUT_SIZE 64
+
+struct pisp_be_tonemap_config {
+ u16 detail_constant;
+ u16 detail_slope;
+ u16 iir_strength;
+ u16 strength;
+ u32 lut[PISP_BE_TONEMAP_LUT_SIZE];
+};
+
+struct pisp_be_demosaic_config {
+ u8 sharper;
+ u8 fc_mode;
+ u8 pad[2];
+};
+
+struct pisp_be_ccm_config {
+ s16 coeffs[9];
+ u8 pad[2];
+ s32 offsets[3];
+};
+
+struct pisp_be_sat_control_config {
+ u8 shift_r;
+ u8 shift_g;
+ u8 shift_b;
+ u8 pad;
+};
+
+struct pisp_be_false_colour_config {
+ u8 distance;
+ u8 pad[3];
+};
+
+#define PISP_BE_SHARPEN_SIZE 5
+#define PISP_BE_SHARPEN_FUNC_NUM_POINTS 9
+
+struct pisp_be_sharpen_config {
+ s8 kernel0[PISP_BE_SHARPEN_SIZE * PISP_BE_SHARPEN_SIZE];
+ s8 pad0[3];
+ s8 kernel1[PISP_BE_SHARPEN_SIZE * PISP_BE_SHARPEN_SIZE];
+ s8 pad1[3];
+ s8 kernel2[PISP_BE_SHARPEN_SIZE * PISP_BE_SHARPEN_SIZE];
+ s8 pad2[3];
+ s8 kernel3[PISP_BE_SHARPEN_SIZE * PISP_BE_SHARPEN_SIZE];
+ s8 pad3[3];
+ s8 kernel4[PISP_BE_SHARPEN_SIZE * PISP_BE_SHARPEN_SIZE];
+ s8 pad4[3];
+ u16 threshold_offset0;
+ u16 threshold_slope0;
+ u16 scale0;
+ u16 pad5;
+ u16 threshold_offset1;
+ u16 threshold_slope1;
+ u16 scale1;
+ u16 pad6;
+ u16 threshold_offset2;
+ u16 threshold_slope2;
+ u16 scale2;
+ u16 pad7;
+ u16 threshold_offset3;
+ u16 threshold_slope3;
+ u16 scale3;
+ u16 pad8;
+ u16 threshold_offset4;
+ u16 threshold_slope4;
+ u16 scale4;
+ u16 pad9;
+ u16 positive_strength;
+ u16 positive_pre_limit;
+ u16 positive_func[PISP_BE_SHARPEN_FUNC_NUM_POINTS];
+ u16 positive_limit;
+ u16 negative_strength;
+ u16 negative_pre_limit;
+ u16 negative_func[PISP_BE_SHARPEN_FUNC_NUM_POINTS];
+ u16 negative_limit;
+ u8 enables;
+ u8 white;
+ u8 black;
+ u8 grey;
+};
+
+struct pisp_be_sh_fc_combine_config {
+ u8 y_factor;
+ u8 c1_factor;
+ u8 c2_factor;
+ u8 pad;
+};
+
+#define PISP_BE_GAMMA_LUT_SIZE 64
+
+struct pisp_be_gamma_config {
+ u32 lut[PISP_BE_GAMMA_LUT_SIZE];
+};
+
+struct pisp_be_crop_config {
+ u16 offset_x, offset_y;
+ u16 width, height;
+};
+
+#define PISP_BE_RESAMPLE_FILTER_SIZE 96
+
+struct pisp_be_resample_config {
+ u16 scale_factor_h, scale_factor_v;
+ s16 coef[PISP_BE_RESAMPLE_FILTER_SIZE];
+};
+
+struct pisp_be_resample_extra {
+ u16 scaled_width;
+ u16 scaled_height;
+ s16 initial_phase_h[3];
+ s16 initial_phase_v[3];
+};
+
+struct pisp_be_downscale_config {
+ u16 scale_factor_h;
+ u16 scale_factor_v;
+ u16 scale_recip_h;
+ u16 scale_recip_v;
+};
+
+struct pisp_be_downscale_extra {
+ u16 scaled_width;
+ u16 scaled_height;
+};
+
+struct pisp_be_hog_config {
+ u8 compute_signed;
+ u8 channel_mix[3];
+ u32 stride;
+};
+
+struct pisp_be_axi_config {
+ u8 r_qos; /* Read QoS */
+ u8 r_cache_prot; /* Read { prot[2:0], cache[3:0] } */
+ u8 w_qos; /* Write QoS */
+ u8 w_cache_prot; /* Write { prot[2:0], cache[3:0] } */
+};
+
+enum pisp_be_transform {
+ PISP_BE_TRANSFORM_NONE = 0x0,
+ PISP_BE_TRANSFORM_HFLIP = 0x1,
+ PISP_BE_TRANSFORM_VFLIP = 0x2,
+ PISP_BE_TRANSFORM_ROT180 =
+ (PISP_BE_TRANSFORM_HFLIP | PISP_BE_TRANSFORM_VFLIP)
+};
+
+struct pisp_be_output_format_config {
+ struct pisp_image_format_config image;
+ u8 transform;
+ u8 pad[3];
+ u16 lo;
+ u16 hi;
+ u16 lo2;
+ u16 hi2;
+};
+
+struct pisp_be_output_buffer_config {
+ /* low 32 bits followed by high 32 bits (for each of 3 planes) */
+ u32 addr[3][2];
+};
+
+struct pisp_be_hog_buffer_config {
+ /* low 32 bits followed by high 32 bits */
+ u32 addr[2];
+};
+
+struct pisp_be_config {
+ /* I/O configuration: */
+ struct pisp_be_input_buffer_config input_buffer;
+ struct pisp_be_tdn_input_buffer_config tdn_input_buffer;
+ struct pisp_be_stitch_input_buffer_config stitch_input_buffer;
+ struct pisp_be_tdn_output_buffer_config tdn_output_buffer;
+ struct pisp_be_stitch_output_buffer_config stitch_output_buffer;
+ struct pisp_be_output_buffer_config
+ output_buffer[PISP_BACK_END_NUM_OUTPUTS];
+ struct pisp_be_hog_buffer_config hog_buffer;
+ /* Processing configuration: */
+ struct pisp_be_global_config global;
+ struct pisp_image_format_config input_format;
+ struct pisp_decompress_config decompress;
+ struct pisp_be_dpc_config dpc;
+ struct pisp_be_geq_config geq;
+ struct pisp_image_format_config tdn_input_format;
+ struct pisp_decompress_config tdn_decompress;
+ struct pisp_be_tdn_config tdn;
+ struct pisp_compress_config tdn_compress;
+ struct pisp_image_format_config tdn_output_format;
+ struct pisp_be_sdn_config sdn;
+ struct pisp_bla_config blc;
+ struct pisp_compress_config stitch_compress;
+ struct pisp_image_format_config stitch_output_format;
+ struct pisp_image_format_config stitch_input_format;
+ struct pisp_decompress_config stitch_decompress;
+ struct pisp_be_stitch_config stitch;
+ struct pisp_be_lsc_config lsc;
+ struct pisp_wbg_config wbg;
+ struct pisp_be_cdn_config cdn;
+ struct pisp_be_cac_config cac;
+ struct pisp_be_debin_config debin;
+ struct pisp_be_tonemap_config tonemap;
+ struct pisp_be_demosaic_config demosaic;
+ struct pisp_be_ccm_config ccm;
+ struct pisp_be_sat_control_config sat_control;
+ struct pisp_be_ccm_config ycbcr;
+ struct pisp_be_sharpen_config sharpen;
+ struct pisp_be_false_colour_config false_colour;
+ struct pisp_be_sh_fc_combine_config sh_fc_combine;
+ struct pisp_be_ccm_config ycbcr_inverse;
+ struct pisp_be_gamma_config gamma;
+ struct pisp_be_ccm_config csc[PISP_BACK_END_NUM_OUTPUTS];
+ struct pisp_be_downscale_config downscale[PISP_BACK_END_NUM_OUTPUTS];
+ struct pisp_be_resample_config resample[PISP_BACK_END_NUM_OUTPUTS];
+ struct pisp_be_output_format_config
+ output_format[PISP_BACK_END_NUM_OUTPUTS];
+ struct pisp_be_hog_config hog;
+ struct pisp_be_axi_config axi;
+ /* Non-register fields: */
+ struct pisp_be_lsc_extra lsc_extra;
+ struct pisp_be_cac_extra cac_extra;
+ struct pisp_be_downscale_extra
+ downscale_extra[PISP_BACK_END_NUM_OUTPUTS];
+ struct pisp_be_resample_extra resample_extra[PISP_BACK_END_NUM_OUTPUTS];
+ struct pisp_be_crop_config crop;
+ struct pisp_image_format_config hog_format;
+ u32 dirty_flags_bayer; /* these use pisp_be_bayer_enable */
+ u32 dirty_flags_rgb; /* use pisp_be_rgb_enable */
+ u32 dirty_flags_extra; /* these use pisp_be_dirty_t */
+};
+
+/*
+ * We also need a tile structure to describe the size of the tiles going
+ * through the pipeline.
+ */
+
+enum pisp_tile_edge {
+ PISP_LEFT_EDGE = (1 << 0),
+ PISP_RIGHT_EDGE = (1 << 1),
+ PISP_TOP_EDGE = (1 << 2),
+ PISP_BOTTOM_EDGE = (1 << 3)
+};
+
+struct pisp_tile {
+ u8 edge; // enum pisp_tile_edge
+ u8 pad0[3];
+ // 4 bytes
+ u32 input_addr_offset;
+ u32 input_addr_offset2;
+ u16 input_offset_x;
+ u16 input_offset_y;
+ u16 input_width;
+ u16 input_height;
+ // 20 bytes
+ u32 tdn_input_addr_offset;
+ u32 tdn_output_addr_offset;
+ u32 stitch_input_addr_offset;
+ u32 stitch_output_addr_offset;
+ // 36 bytes
+ u32 lsc_grid_offset_x;
+ u32 lsc_grid_offset_y;
+ // 44 bytes
+ u32 cac_grid_offset_x;
+ u32 cac_grid_offset_y;
+ // 52 bytes
+ u16 crop_x_start[PISP_BACK_END_NUM_OUTPUTS];
+ u16 crop_x_end[PISP_BACK_END_NUM_OUTPUTS];
+ u16 crop_y_start[PISP_BACK_END_NUM_OUTPUTS];
+ u16 crop_y_end[PISP_BACK_END_NUM_OUTPUTS];
+ // 68 bytes
+ /* Ordering is planes then branches */
+ u16 downscale_phase_x[3 * PISP_BACK_END_NUM_OUTPUTS];
+ u16 downscale_phase_y[3 * PISP_BACK_END_NUM_OUTPUTS];
+ // 92 bytes
+ u16 resample_in_width[PISP_BACK_END_NUM_OUTPUTS];
+ u16 resample_in_height[PISP_BACK_END_NUM_OUTPUTS];
+ // 100 bytes
+ /* Ordering is planes then branches */
+ u16 resample_phase_x[3 * PISP_BACK_END_NUM_OUTPUTS];
+ u16 resample_phase_y[3 * PISP_BACK_END_NUM_OUTPUTS];
+ // 124 bytes
+ u16 output_offset_x[PISP_BACK_END_NUM_OUTPUTS];
+ u16 output_offset_y[PISP_BACK_END_NUM_OUTPUTS];
+ u16 output_width[PISP_BACK_END_NUM_OUTPUTS];
+ u16 output_height[PISP_BACK_END_NUM_OUTPUTS];
+ // 140 bytes
+ u32 output_addr_offset[PISP_BACK_END_NUM_OUTPUTS];
+ u32 output_addr_offset2[PISP_BACK_END_NUM_OUTPUTS];
+ // 156 bytes
+ u32 output_hog_addr_offset;
+ // 160 bytes
+};
+
+static_assert(sizeof(struct pisp_tile) == 160);
+
+struct pisp_be_tiles_config {
+ struct pisp_be_config config;
+ struct pisp_tile tiles[PISP_BACK_END_NUM_TILES];
+ int num_tiles;
+};
+
+#endif /* _PISP_BE_CONFIG_H_ */
--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * PiSP Back End driver image format definitions.
+ *
+ * Copyright (c) 2021 Raspberry Pi Ltd
+ */
+
+#ifndef _PISP_BE_FORMATS_
+#define _PISP_BE_FORMATS_
+
+#include <linux/bits.h>
+#include <linux/videodev2.h>
+
+#define MAX_PLANES 3
+#define P3(x) ((x) * 8)
+
+struct pisp_be_format {
+ unsigned int fourcc;
+ unsigned int align;
+ unsigned int bit_depth;
+ /* 0P3 factor for plane sizing */
+ unsigned int plane_factor[MAX_PLANES];
+ unsigned int num_planes;
+ unsigned int colorspace_mask;
+ enum v4l2_colorspace colorspace_default;
+};
+
+#define V4L2_COLORSPACE_MASK(colorspace) BIT(colorspace)
+
+#define V4L2_COLORSPACE_MASK_JPEG V4L2_COLORSPACE_MASK(V4L2_COLORSPACE_JPEG)
+#define V4L2_COLORSPACE_MASK_SMPTE170M V4L2_COLORSPACE_MASK(V4L2_COLORSPACE_SMPTE170M)
+#define V4L2_COLORSPACE_MASK_REC709 V4L2_COLORSPACE_MASK(V4L2_COLORSPACE_REC709)
+#define V4L2_COLORSPACE_MASK_SRGB V4L2_COLORSPACE_MASK(V4L2_COLORSPACE_SRGB)
+#define V4L2_COLORSPACE_MASK_RAW V4L2_COLORSPACE_MASK(V4L2_COLORSPACE_RAW)
+
+/*
+ * All three colour spaces JPEG, SMPTE170M and REC709 are fundamentally sRGB
+ * underneath (as near as makes no difference to us), just with different YCbCr
+ * encodings. Therefore the ISP can generate sRGB on its main output and any of
+ * the others on its low resolution output. Applications should, when using both
+ * outputs, program the colour spaces on them to be the same, matching whatever
+ * is requested for the low resolution output, even if the main output is
+ * producing an RGB format. In turn this requires us to allow all these colour
+ * spaces for every YUV/RGB output format.
+ */
+#define V4L2_COLORSPACE_MASK_ALL_SRGB (V4L2_COLORSPACE_MASK_JPEG | \
+ V4L2_COLORSPACE_MASK_SRGB | \
+ V4L2_COLORSPACE_MASK_SMPTE170M | \
+ V4L2_COLORSPACE_MASK_REC709)
+
+static const struct pisp_be_format supported_formats[] = {
+ /* Single plane YUV formats */
+ {
+ .fourcc = V4L2_PIX_FMT_YUV420,
+ /* 128 alignment to ensure U/V planes are 64 byte aligned. */
+ .align = 128,
+ .bit_depth = 8,
+ .plane_factor = { P3(1), P3(0.25), P3(0.25) },
+ .num_planes = 1,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_ALL_SRGB,
+ .colorspace_default = V4L2_COLORSPACE_JPEG,
+ },
+ {
+ .fourcc = V4L2_PIX_FMT_YVU420,
+ /* 128 alignment to ensure U/V planes are 64 byte aligned. */
+ .align = 128,
+ .bit_depth = 8,
+ .plane_factor = { P3(1), P3(0.25), P3(0.25) },
+ .num_planes = 1,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_ALL_SRGB,
+ .colorspace_default = V4L2_COLORSPACE_SMPTE170M,
+ },
+ {
+ .fourcc = V4L2_PIX_FMT_NV12,
+ .align = 32,
+ .bit_depth = 8,
+ .plane_factor = { P3(1), P3(0.5) },
+ .num_planes = 1,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_ALL_SRGB,
+ .colorspace_default = V4L2_COLORSPACE_SMPTE170M,
+ },
+ {
+ .fourcc = V4L2_PIX_FMT_NV21,
+ .align = 32,
+ .bit_depth = 8,
+ .plane_factor = { P3(1), P3(0.5) },
+ .num_planes = 1,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_ALL_SRGB,
+ .colorspace_default = V4L2_COLORSPACE_SMPTE170M,
+ },
+ {
+ .fourcc = V4L2_PIX_FMT_YUYV,
+ .align = 64,
+ .bit_depth = 16,
+ .plane_factor = { P3(1) },
+ .num_planes = 1,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_ALL_SRGB,
+ .colorspace_default = V4L2_COLORSPACE_SMPTE170M,
+ },
+ {
+ .fourcc = V4L2_PIX_FMT_UYVY,
+ .align = 64,
+ .bit_depth = 16,
+ .plane_factor = { P3(1) },
+ .num_planes = 1,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_ALL_SRGB,
+ .colorspace_default = V4L2_COLORSPACE_SMPTE170M,
+ },
+ {
+ .fourcc = V4L2_PIX_FMT_YVYU,
+ .align = 64,
+ .bit_depth = 16,
+ .plane_factor = { P3(1) },
+ .num_planes = 1,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_ALL_SRGB,
+ .colorspace_default = V4L2_COLORSPACE_SMPTE170M,
+ },
+ {
+ .fourcc = V4L2_PIX_FMT_VYUY,
+ .align = 64,
+ .bit_depth = 16,
+ .plane_factor = { P3(1) },
+ .num_planes = 1,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_ALL_SRGB,
+ .colorspace_default = V4L2_COLORSPACE_SMPTE170M,
+ },
+ /* Multiplane YUV formats */
+ {
+ .fourcc = V4L2_PIX_FMT_YUV420M,
+ .align = 64,
+ .bit_depth = 8,
+ .plane_factor = { P3(1), P3(0.25), P3(0.25) },
+ .num_planes = 3,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_ALL_SRGB,
+ .colorspace_default = V4L2_COLORSPACE_JPEG,
+ },
+ {
+ .fourcc = V4L2_PIX_FMT_NV12M,
+ .align = 32,
+ .bit_depth = 8,
+ .plane_factor = { P3(1), P3(0.5) },
+ .num_planes = 2,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_ALL_SRGB,
+ .colorspace_default = V4L2_COLORSPACE_SMPTE170M,
+ },
+ {
+ .fourcc = V4L2_PIX_FMT_NV21M,
+ .align = 32,
+ .bit_depth = 8,
+ .plane_factor = { P3(1), P3(0.5) },
+ .num_planes = 2,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_ALL_SRGB,
+ .colorspace_default = V4L2_COLORSPACE_SMPTE170M,
+ },
+ {
+ .fourcc = V4L2_PIX_FMT_YVU420M,
+ .align = 64,
+ .bit_depth = 8,
+ .plane_factor = { P3(1), P3(0.25), P3(0.25) },
+ .num_planes = 3,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_ALL_SRGB,
+ .colorspace_default = V4L2_COLORSPACE_SMPTE170M,
+ },
+ {
+ .fourcc = V4L2_PIX_FMT_YUV422M,
+ .align = 64,
+ .bit_depth = 8,
+ .plane_factor = { P3(1), P3(0.5), P3(0.5) },
+ .num_planes = 3,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_ALL_SRGB,
+ .colorspace_default = V4L2_COLORSPACE_JPEG,
+ },
+ {
+ .fourcc = V4L2_PIX_FMT_YVU422M,
+ .align = 64,
+ .bit_depth = 8,
+ .plane_factor = { P3(1), P3(0.5), P3(0.5) },
+ .num_planes = 3,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_ALL_SRGB,
+ .colorspace_default = V4L2_COLORSPACE_SMPTE170M,
+ },
+ {
+ .fourcc = V4L2_PIX_FMT_YUV444M,
+ .align = 64,
+ .bit_depth = 8,
+ .plane_factor = { P3(1), P3(1), P3(1) },
+ .num_planes = 3,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_ALL_SRGB,
+ .colorspace_default = V4L2_COLORSPACE_JPEG,
+ },
+ {
+ .fourcc = V4L2_PIX_FMT_YVU444M,
+ .align = 64,
+ .bit_depth = 8,
+ .plane_factor = { P3(1), P3(1), P3(1) },
+ .num_planes = 3,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_ALL_SRGB,
+ .colorspace_default = V4L2_COLORSPACE_SMPTE170M,
+ },
+ /* RGB formats */
+ {
+ .fourcc = V4L2_PIX_FMT_RGB24,
+ .align = 32,
+ .bit_depth = 24,
+ .plane_factor = { P3(1.0) },
+ .num_planes = 1,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_ALL_SRGB,
+ .colorspace_default = V4L2_COLORSPACE_SRGB,
+ },
+ {
+ .fourcc = V4L2_PIX_FMT_BGR24,
+ .align = 32,
+ .bit_depth = 24,
+ .plane_factor = { P3(1.0) },
+ .num_planes = 1,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_ALL_SRGB,
+ .colorspace_default = V4L2_COLORSPACE_SRGB,
+ },
+ {
+ .fourcc = V4L2_PIX_FMT_XBGR32,
+ .align = 64,
+ .bit_depth = 32,
+ .plane_factor = { P3(1.0) },
+ .num_planes = 1,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_ALL_SRGB,
+ .colorspace_default = V4L2_COLORSPACE_SRGB,
+ },
+ {
+ .fourcc = V4L2_PIX_FMT_RGBX32,
+ .align = 64,
+ .bit_depth = 32,
+ .plane_factor = { P3(1.0) },
+ .num_planes = 1,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_ALL_SRGB,
+ .colorspace_default = V4L2_COLORSPACE_SRGB,
+ },
+ /* Bayer formats - 8-bit */
+ {
+ .fourcc = V4L2_PIX_FMT_SRGGB8,
+ .bit_depth = 8,
+ .align = 32,
+ .plane_factor = { P3(1.0) },
+ .num_planes = 1,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_RAW,
+ .colorspace_default = V4L2_COLORSPACE_RAW,
+ },
+ {
+ .fourcc = V4L2_PIX_FMT_SBGGR8,
+ .bit_depth = 8,
+ .align = 32,
+ .plane_factor = { P3(1.0) },
+ .num_planes = 1,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_RAW,
+ .colorspace_default = V4L2_COLORSPACE_RAW,
+ },
+ {
+ .fourcc = V4L2_PIX_FMT_SGRBG8,
+ .bit_depth = 8,
+ .align = 32,
+ .plane_factor = { P3(1.0) },
+ .num_planes = 1,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_RAW,
+ .colorspace_default = V4L2_COLORSPACE_RAW,
+ },
+ {
+ .fourcc = V4L2_PIX_FMT_SGBRG8,
+ .bit_depth = 8,
+ .align = 32,
+ .plane_factor = { P3(1.0) },
+ .num_planes = 1,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_RAW,
+ .colorspace_default = V4L2_COLORSPACE_RAW,
+ },
+ /* Bayer formats - 16-bit */
+ {
+ .fourcc = V4L2_PIX_FMT_SRGGB16,
+ .bit_depth = 16,
+ .align = 32,
+ .plane_factor = { P3(1.0) },
+ .num_planes = 1,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_RAW,
+ .colorspace_default = V4L2_COLORSPACE_RAW,
+ },
+ {
+ .fourcc = V4L2_PIX_FMT_SBGGR16,
+ .bit_depth = 16,
+ .align = 32,
+ .plane_factor = { P3(1.0) },
+ .num_planes = 1,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_RAW,
+ .colorspace_default = V4L2_COLORSPACE_RAW,
+ },
+ {
+ .fourcc = V4L2_PIX_FMT_SGRBG16,
+ .bit_depth = 16,
+ .align = 32,
+ .plane_factor = { P3(1.0) },
+ .num_planes = 1,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_RAW,
+ .colorspace_default = V4L2_COLORSPACE_RAW,
+ },
+ {
+ .fourcc = V4L2_PIX_FMT_SGBRG16,
+ .bit_depth = 16,
+ .align = 32,
+ .plane_factor = { P3(1.0) },
+ .num_planes = 1,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_RAW,
+ .colorspace_default = V4L2_COLORSPACE_RAW,
+ },
+ {
+ /* Bayer formats unpacked to 16bpp */
+ /* 10 bit */
+ .fourcc = V4L2_PIX_FMT_SRGGB10,
+ .bit_depth = 16,
+ .align = 32,
+ .plane_factor = { P3(1.0) },
+ .num_planes = 1,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_RAW,
+ .colorspace_default = V4L2_COLORSPACE_RAW,
+ },
+ {
+ .fourcc = V4L2_PIX_FMT_SBGGR10,
+ .bit_depth = 16,
+ .align = 32,
+ .plane_factor = { P3(1.0) },
+ .num_planes = 1,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_RAW,
+ .colorspace_default = V4L2_COLORSPACE_RAW,
+ },
+ {
+ .fourcc = V4L2_PIX_FMT_SGRBG10,
+ .bit_depth = 16,
+ .align = 32,
+ .plane_factor = { P3(1.0) },
+ .num_planes = 1,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_RAW,
+ .colorspace_default = V4L2_COLORSPACE_RAW,
+ },
+ {
+ .fourcc = V4L2_PIX_FMT_SGBRG10,
+ .bit_depth = 16,
+ .align = 32,
+ .plane_factor = { P3(1.0) },
+ .num_planes = 1,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_RAW,
+ .colorspace_default = V4L2_COLORSPACE_RAW,
+ },
+ {
+ /* 12 bit */
+ .fourcc = V4L2_PIX_FMT_SRGGB12,
+ .bit_depth = 16,
+ .align = 32,
+ .plane_factor = { P3(1.0) },
+ .num_planes = 1,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_RAW,
+ .colorspace_default = V4L2_COLORSPACE_RAW,
+ },
+ {
+ .fourcc = V4L2_PIX_FMT_SBGGR12,
+ .bit_depth = 16,
+ .align = 32,
+ .plane_factor = { P3(1.0) },
+ .num_planes = 1,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_RAW,
+ .colorspace_default = V4L2_COLORSPACE_RAW,
+ },
+ {
+ .fourcc = V4L2_PIX_FMT_SGRBG12,
+ .bit_depth = 16,
+ .align = 32,
+ .plane_factor = { P3(1.0) },
+ .num_planes = 1,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_RAW,
+ .colorspace_default = V4L2_COLORSPACE_RAW,
+ },
+ {
+ .fourcc = V4L2_PIX_FMT_SGBRG12,
+ .bit_depth = 16,
+ .align = 32,
+ .plane_factor = { P3(1.0) },
+ .num_planes = 1,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_RAW,
+ .colorspace_default = V4L2_COLORSPACE_RAW,
+ },
+ {
+ /* 14 bit */
+ .fourcc = V4L2_PIX_FMT_SRGGB14,
+ .bit_depth = 16,
+ .align = 32,
+ .plane_factor = { P3(1.0) },
+ .num_planes = 1,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_RAW,
+ .colorspace_default = V4L2_COLORSPACE_RAW,
+ },
+ {
+ .fourcc = V4L2_PIX_FMT_SBGGR14,
+ .bit_depth = 16,
+ .align = 32,
+ .plane_factor = { P3(1.0) },
+ .num_planes = 1,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_RAW,
+ .colorspace_default = V4L2_COLORSPACE_RAW,
+ },
+ {
+ .fourcc = V4L2_PIX_FMT_SGRBG14,
+ .bit_depth = 16,
+ .align = 32,
+ .plane_factor = { P3(1.0) },
+ .num_planes = 1,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_RAW,
+ .colorspace_default = V4L2_COLORSPACE_RAW,
+ },
+ {
+ .fourcc = V4L2_PIX_FMT_SGBRG14,
+ .bit_depth = 16,
+ .align = 32,
+ .plane_factor = { P3(1.0) },
+ .num_planes = 1,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_RAW,
+ .colorspace_default = V4L2_COLORSPACE_RAW,
+ },
+ /* Bayer formats - 16-bit PiSP Compressed */
+ {
+ .fourcc = V4L2_PIX_FMT_PISP_COMP1_BGGR,
+ .bit_depth = 8,
+ .align = 32,
+ .plane_factor = { P3(1.0) },
+ .num_planes = 1,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_RAW,
+ .colorspace_default = V4L2_COLORSPACE_RAW,
+ },
+ {
+ .fourcc = V4L2_PIX_FMT_PISP_COMP1_RGGB,
+ .bit_depth = 8,
+ .align = 32,
+ .plane_factor = { P3(1.0) },
+ .num_planes = 1,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_RAW,
+ .colorspace_default = V4L2_COLORSPACE_RAW,
+ },
+ {
+ .fourcc = V4L2_PIX_FMT_PISP_COMP1_GRBG,
+ .bit_depth = 8,
+ .align = 32,
+ .plane_factor = { P3(1.0) },
+ .num_planes = 1,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_RAW,
+ .colorspace_default = V4L2_COLORSPACE_RAW,
+ },
+ {
+ .fourcc = V4L2_PIX_FMT_PISP_COMP1_GBRG,
+ .bit_depth = 8,
+ .align = 32,
+ .plane_factor = { P3(1.0) },
+ .num_planes = 1,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_RAW,
+ .colorspace_default = V4L2_COLORSPACE_RAW,
+ },
+};
+
+static const struct pisp_be_format meta_out_supported_formats[] = {
+ /* Configuration buffer format. */
+ {
+ .fourcc = V4L2_META_FMT_RPI_BE_CFG,
+ },
+};
+
+#endif /* _PISP_BE_FORMATS_ */
projects / platform / kernel / linux-rpi.git / commitdiff