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1431 lines
34 KiB
1431 lines
34 KiB
// SPDX-License-Identifier: GPL-2.0 |
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/* |
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* Copyright (C) STMicroelectronics SA 2014 |
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* Authors: Fabien Dessenne <[email protected]> for STMicroelectronics. |
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*/ |
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#include <linux/errno.h> |
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#include <linux/interrupt.h> |
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#include <linux/kernel.h> |
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#include <linux/module.h> |
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#include <linux/of.h> |
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#include <linux/pm_runtime.h> |
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#include <linux/slab.h> |
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#include <media/v4l2-event.h> |
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#include <media/v4l2-ioctl.h> |
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#include "bdisp.h" |
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#define BDISP_MAX_CTRL_NUM 10 |
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#define BDISP_WORK_TIMEOUT ((100 * HZ) / 1000) |
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/* User configuration change */ |
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#define BDISP_PARAMS BIT(0) /* Config updated */ |
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#define BDISP_SRC_FMT BIT(1) /* Source set */ |
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#define BDISP_DST_FMT BIT(2) /* Destination set */ |
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#define BDISP_CTX_STOP_REQ BIT(3) /* Stop request */ |
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#define BDISP_CTX_ABORT BIT(4) /* Abort while device run */ |
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#define BDISP_MIN_W 1 |
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#define BDISP_MAX_W 8191 |
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#define BDISP_MIN_H 1 |
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#define BDISP_MAX_H 8191 |
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#define fh_to_ctx(__fh) container_of(__fh, struct bdisp_ctx, fh) |
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enum bdisp_dev_flags { |
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ST_M2M_OPEN, /* Driver opened */ |
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ST_M2M_RUNNING, /* HW device running */ |
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ST_M2M_SUSPENDED, /* Driver suspended */ |
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ST_M2M_SUSPENDING, /* Driver being suspended */ |
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}; |
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static const struct bdisp_fmt bdisp_formats[] = { |
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/* ARGB888. [31:0] A:R:G:B 8:8:8:8 little endian */ |
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{ |
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.pixelformat = V4L2_PIX_FMT_ABGR32, /* is actually ARGB */ |
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.nb_planes = 1, |
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.bpp = 32, |
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.bpp_plane0 = 32, |
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.w_align = 1, |
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.h_align = 1 |
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}, |
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/* XRGB888. [31:0] x:R:G:B 8:8:8:8 little endian */ |
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{ |
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.pixelformat = V4L2_PIX_FMT_XBGR32, /* is actually xRGB */ |
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.nb_planes = 1, |
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.bpp = 32, |
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.bpp_plane0 = 32, |
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.w_align = 1, |
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.h_align = 1 |
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}, |
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/* RGB565. [15:0] R:G:B 5:6:5 little endian */ |
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{ |
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.pixelformat = V4L2_PIX_FMT_RGB565, |
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.nb_planes = 1, |
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.bpp = 16, |
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.bpp_plane0 = 16, |
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.w_align = 1, |
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.h_align = 1 |
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}, |
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/* NV12. YUV420SP - 1 plane for Y + 1 plane for (CbCr) */ |
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{ |
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.pixelformat = V4L2_PIX_FMT_NV12, |
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.nb_planes = 2, |
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.bpp = 12, |
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.bpp_plane0 = 8, |
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.w_align = 2, |
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.h_align = 2 |
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}, |
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/* RGB888. [23:0] B:G:R 8:8:8 little endian */ |
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{ |
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.pixelformat = V4L2_PIX_FMT_RGB24, |
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.nb_planes = 1, |
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.bpp = 24, |
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.bpp_plane0 = 24, |
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.w_align = 1, |
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.h_align = 1 |
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}, |
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/* YU12. YUV420P - 1 plane for Y + 1 plane for Cb + 1 plane for Cr |
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* To keep as the LAST element of this table (no support on capture) |
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*/ |
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{ |
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.pixelformat = V4L2_PIX_FMT_YUV420, |
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.nb_planes = 3, |
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.bpp = 12, |
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.bpp_plane0 = 8, |
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.w_align = 2, |
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.h_align = 2 |
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} |
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}; |
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/* Default format : HD ARGB32*/ |
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#define BDISP_DEF_WIDTH 1920 |
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#define BDISP_DEF_HEIGHT 1080 |
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static const struct bdisp_frame bdisp_dflt_fmt = { |
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.width = BDISP_DEF_WIDTH, |
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.height = BDISP_DEF_HEIGHT, |
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.fmt = &bdisp_formats[0], |
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.field = V4L2_FIELD_NONE, |
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.bytesperline = BDISP_DEF_WIDTH * 4, |
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.sizeimage = BDISP_DEF_WIDTH * BDISP_DEF_HEIGHT * 4, |
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.colorspace = V4L2_COLORSPACE_REC709, |
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.crop = {0, 0, BDISP_DEF_WIDTH, BDISP_DEF_HEIGHT}, |
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.paddr = {0, 0, 0, 0} |
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}; |
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static inline void bdisp_ctx_state_lock_set(u32 state, struct bdisp_ctx *ctx) |
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{ |
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unsigned long flags; |
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spin_lock_irqsave(&ctx->bdisp_dev->slock, flags); |
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ctx->state |= state; |
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spin_unlock_irqrestore(&ctx->bdisp_dev->slock, flags); |
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} |
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static inline void bdisp_ctx_state_lock_clear(u32 state, struct bdisp_ctx *ctx) |
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{ |
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unsigned long flags; |
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spin_lock_irqsave(&ctx->bdisp_dev->slock, flags); |
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ctx->state &= ~state; |
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spin_unlock_irqrestore(&ctx->bdisp_dev->slock, flags); |
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} |
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static inline bool bdisp_ctx_state_is_set(u32 mask, struct bdisp_ctx *ctx) |
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{ |
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unsigned long flags; |
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bool ret; |
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spin_lock_irqsave(&ctx->bdisp_dev->slock, flags); |
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ret = (ctx->state & mask) == mask; |
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spin_unlock_irqrestore(&ctx->bdisp_dev->slock, flags); |
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return ret; |
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} |
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static const struct bdisp_fmt *bdisp_find_fmt(u32 pixelformat) |
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{ |
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const struct bdisp_fmt *fmt; |
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unsigned int i; |
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for (i = 0; i < ARRAY_SIZE(bdisp_formats); i++) { |
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fmt = &bdisp_formats[i]; |
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if (fmt->pixelformat == pixelformat) |
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return fmt; |
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} |
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return NULL; |
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} |
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static struct bdisp_frame *ctx_get_frame(struct bdisp_ctx *ctx, |
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enum v4l2_buf_type type) |
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{ |
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switch (type) { |
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case V4L2_BUF_TYPE_VIDEO_OUTPUT: |
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return &ctx->src; |
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case V4L2_BUF_TYPE_VIDEO_CAPTURE: |
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return &ctx->dst; |
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default: |
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dev_err(ctx->bdisp_dev->dev, |
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"Wrong buffer/video queue type (%d)\n", type); |
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break; |
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} |
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return ERR_PTR(-EINVAL); |
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} |
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static void bdisp_job_finish(struct bdisp_ctx *ctx, int vb_state) |
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{ |
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struct vb2_v4l2_buffer *src_vb, *dst_vb; |
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if (WARN(!ctx || !ctx->fh.m2m_ctx, "Null hardware context\n")) |
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return; |
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dev_dbg(ctx->bdisp_dev->dev, "%s\n", __func__); |
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src_vb = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx); |
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dst_vb = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx); |
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if (src_vb && dst_vb) { |
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dst_vb->vb2_buf.timestamp = src_vb->vb2_buf.timestamp; |
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dst_vb->timecode = src_vb->timecode; |
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dst_vb->flags &= ~V4L2_BUF_FLAG_TSTAMP_SRC_MASK; |
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dst_vb->flags |= src_vb->flags & |
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V4L2_BUF_FLAG_TSTAMP_SRC_MASK; |
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v4l2_m2m_buf_done(src_vb, vb_state); |
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v4l2_m2m_buf_done(dst_vb, vb_state); |
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v4l2_m2m_job_finish(ctx->bdisp_dev->m2m.m2m_dev, |
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ctx->fh.m2m_ctx); |
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} |
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} |
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static int bdisp_ctx_stop_req(struct bdisp_ctx *ctx) |
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{ |
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struct bdisp_ctx *curr_ctx; |
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struct bdisp_dev *bdisp = ctx->bdisp_dev; |
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int ret; |
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dev_dbg(ctx->bdisp_dev->dev, "%s\n", __func__); |
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cancel_delayed_work(&bdisp->timeout_work); |
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curr_ctx = v4l2_m2m_get_curr_priv(bdisp->m2m.m2m_dev); |
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if (!test_bit(ST_M2M_RUNNING, &bdisp->state) || (curr_ctx != ctx)) |
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return 0; |
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bdisp_ctx_state_lock_set(BDISP_CTX_STOP_REQ, ctx); |
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ret = wait_event_timeout(bdisp->irq_queue, |
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!bdisp_ctx_state_is_set(BDISP_CTX_STOP_REQ, ctx), |
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BDISP_WORK_TIMEOUT); |
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if (!ret) { |
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dev_err(ctx->bdisp_dev->dev, "%s IRQ timeout\n", __func__); |
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return -ETIMEDOUT; |
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} |
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return 0; |
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} |
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static void __bdisp_job_abort(struct bdisp_ctx *ctx) |
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{ |
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int ret; |
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ret = bdisp_ctx_stop_req(ctx); |
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if ((ret == -ETIMEDOUT) || (ctx->state & BDISP_CTX_ABORT)) { |
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bdisp_ctx_state_lock_clear(BDISP_CTX_STOP_REQ | BDISP_CTX_ABORT, |
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ctx); |
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bdisp_job_finish(ctx, VB2_BUF_STATE_ERROR); |
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} |
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} |
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static void bdisp_job_abort(void *priv) |
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{ |
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__bdisp_job_abort((struct bdisp_ctx *)priv); |
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} |
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static int bdisp_get_addr(struct bdisp_ctx *ctx, struct vb2_buffer *vb, |
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struct bdisp_frame *frame, dma_addr_t *paddr) |
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{ |
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if (!vb || !frame) |
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return -EINVAL; |
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paddr[0] = vb2_dma_contig_plane_dma_addr(vb, 0); |
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if (frame->fmt->nb_planes > 1) |
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/* UV (NV12) or U (420P) */ |
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paddr[1] = (dma_addr_t)(paddr[0] + |
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frame->bytesperline * frame->height); |
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if (frame->fmt->nb_planes > 2) |
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/* V (420P) */ |
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paddr[2] = (dma_addr_t)(paddr[1] + |
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(frame->bytesperline * frame->height) / 4); |
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if (frame->fmt->nb_planes > 3) |
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dev_dbg(ctx->bdisp_dev->dev, "ignoring some planes\n"); |
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dev_dbg(ctx->bdisp_dev->dev, |
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"%s plane[0]=%pad plane[1]=%pad plane[2]=%pad\n", |
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__func__, &paddr[0], &paddr[1], &paddr[2]); |
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return 0; |
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} |
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static int bdisp_get_bufs(struct bdisp_ctx *ctx) |
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{ |
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struct bdisp_frame *src, *dst; |
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struct vb2_v4l2_buffer *src_vb, *dst_vb; |
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int ret; |
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src = &ctx->src; |
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dst = &ctx->dst; |
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src_vb = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx); |
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ret = bdisp_get_addr(ctx, &src_vb->vb2_buf, src, src->paddr); |
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if (ret) |
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return ret; |
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dst_vb = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx); |
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ret = bdisp_get_addr(ctx, &dst_vb->vb2_buf, dst, dst->paddr); |
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if (ret) |
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return ret; |
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dst_vb->vb2_buf.timestamp = src_vb->vb2_buf.timestamp; |
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return 0; |
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} |
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static void bdisp_device_run(void *priv) |
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{ |
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struct bdisp_ctx *ctx = priv; |
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struct bdisp_dev *bdisp; |
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unsigned long flags; |
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int err = 0; |
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if (WARN(!ctx, "Null hardware context\n")) |
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return; |
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bdisp = ctx->bdisp_dev; |
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dev_dbg(bdisp->dev, "%s\n", __func__); |
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spin_lock_irqsave(&bdisp->slock, flags); |
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if (bdisp->m2m.ctx != ctx) { |
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dev_dbg(bdisp->dev, "ctx updated: %p -> %p\n", |
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bdisp->m2m.ctx, ctx); |
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ctx->state |= BDISP_PARAMS; |
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bdisp->m2m.ctx = ctx; |
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} |
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if (ctx->state & BDISP_CTX_STOP_REQ) { |
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ctx->state &= ~BDISP_CTX_STOP_REQ; |
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ctx->state |= BDISP_CTX_ABORT; |
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wake_up(&bdisp->irq_queue); |
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goto out; |
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} |
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err = bdisp_get_bufs(ctx); |
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if (err) { |
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dev_err(bdisp->dev, "cannot get address\n"); |
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goto out; |
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} |
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bdisp_dbg_perf_begin(bdisp); |
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err = bdisp_hw_reset(bdisp); |
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if (err) { |
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dev_err(bdisp->dev, "could not get HW ready\n"); |
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goto out; |
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} |
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err = bdisp_hw_update(ctx); |
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if (err) { |
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dev_err(bdisp->dev, "could not send HW request\n"); |
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goto out; |
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} |
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queue_delayed_work(bdisp->work_queue, &bdisp->timeout_work, |
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BDISP_WORK_TIMEOUT); |
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set_bit(ST_M2M_RUNNING, &bdisp->state); |
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out: |
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ctx->state &= ~BDISP_PARAMS; |
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spin_unlock_irqrestore(&bdisp->slock, flags); |
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if (err) |
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bdisp_job_finish(ctx, VB2_BUF_STATE_ERROR); |
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} |
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static const struct v4l2_m2m_ops bdisp_m2m_ops = { |
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.device_run = bdisp_device_run, |
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.job_abort = bdisp_job_abort, |
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}; |
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static int __bdisp_s_ctrl(struct bdisp_ctx *ctx, struct v4l2_ctrl *ctrl) |
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{ |
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if (ctrl->flags & V4L2_CTRL_FLAG_INACTIVE) |
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return 0; |
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switch (ctrl->id) { |
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case V4L2_CID_HFLIP: |
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ctx->hflip = ctrl->val; |
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break; |
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case V4L2_CID_VFLIP: |
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ctx->vflip = ctrl->val; |
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break; |
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default: |
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dev_err(ctx->bdisp_dev->dev, "unknown control %d\n", ctrl->id); |
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return -EINVAL; |
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} |
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ctx->state |= BDISP_PARAMS; |
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return 0; |
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} |
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static int bdisp_s_ctrl(struct v4l2_ctrl *ctrl) |
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{ |
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struct bdisp_ctx *ctx = container_of(ctrl->handler, struct bdisp_ctx, |
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ctrl_handler); |
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unsigned long flags; |
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int ret; |
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spin_lock_irqsave(&ctx->bdisp_dev->slock, flags); |
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ret = __bdisp_s_ctrl(ctx, ctrl); |
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spin_unlock_irqrestore(&ctx->bdisp_dev->slock, flags); |
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return ret; |
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} |
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static const struct v4l2_ctrl_ops bdisp_c_ops = { |
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.s_ctrl = bdisp_s_ctrl, |
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}; |
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static int bdisp_ctrls_create(struct bdisp_ctx *ctx) |
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{ |
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if (ctx->ctrls_rdy) |
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return 0; |
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v4l2_ctrl_handler_init(&ctx->ctrl_handler, BDISP_MAX_CTRL_NUM); |
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ctx->bdisp_ctrls.hflip = v4l2_ctrl_new_std(&ctx->ctrl_handler, |
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&bdisp_c_ops, V4L2_CID_HFLIP, 0, 1, 1, 0); |
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ctx->bdisp_ctrls.vflip = v4l2_ctrl_new_std(&ctx->ctrl_handler, |
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&bdisp_c_ops, V4L2_CID_VFLIP, 0, 1, 1, 0); |
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if (ctx->ctrl_handler.error) { |
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int err = ctx->ctrl_handler.error; |
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v4l2_ctrl_handler_free(&ctx->ctrl_handler); |
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return err; |
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} |
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ctx->ctrls_rdy = true; |
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return 0; |
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} |
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static void bdisp_ctrls_delete(struct bdisp_ctx *ctx) |
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{ |
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if (ctx->ctrls_rdy) { |
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v4l2_ctrl_handler_free(&ctx->ctrl_handler); |
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ctx->ctrls_rdy = false; |
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} |
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} |
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static int bdisp_queue_setup(struct vb2_queue *vq, |
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unsigned int *nb_buf, unsigned int *nb_planes, |
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unsigned int sizes[], struct device *alloc_devs[]) |
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{ |
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struct bdisp_ctx *ctx = vb2_get_drv_priv(vq); |
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struct bdisp_frame *frame = ctx_get_frame(ctx, vq->type); |
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if (IS_ERR(frame)) { |
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dev_err(ctx->bdisp_dev->dev, "Invalid frame (%p)\n", frame); |
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return PTR_ERR(frame); |
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} |
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if (!frame->fmt) { |
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dev_err(ctx->bdisp_dev->dev, "Invalid format\n"); |
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return -EINVAL; |
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} |
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if (*nb_planes) |
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return sizes[0] < frame->sizeimage ? -EINVAL : 0; |
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*nb_planes = 1; |
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sizes[0] = frame->sizeimage; |
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return 0; |
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} |
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static int bdisp_buf_prepare(struct vb2_buffer *vb) |
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{ |
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struct bdisp_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue); |
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struct bdisp_frame *frame = ctx_get_frame(ctx, vb->vb2_queue->type); |
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if (IS_ERR(frame)) { |
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dev_err(ctx->bdisp_dev->dev, "Invalid frame (%p)\n", frame); |
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return PTR_ERR(frame); |
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} |
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if (vb->vb2_queue->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) |
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vb2_set_plane_payload(vb, 0, frame->sizeimage); |
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return 0; |
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} |
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static void bdisp_buf_queue(struct vb2_buffer *vb) |
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{ |
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struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); |
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struct bdisp_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue); |
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|
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/* return to V4L2 any 0-size buffer so it can be dequeued by user */ |
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if (!vb2_get_plane_payload(vb, 0)) { |
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dev_dbg(ctx->bdisp_dev->dev, "0 data buffer, skip it\n"); |
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vb2_buffer_done(vb, VB2_BUF_STATE_DONE); |
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return; |
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} |
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|
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if (ctx->fh.m2m_ctx) |
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v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf); |
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} |
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static int bdisp_start_streaming(struct vb2_queue *q, unsigned int count) |
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{ |
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struct bdisp_ctx *ctx = q->drv_priv; |
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struct vb2_v4l2_buffer *buf; |
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int ret = pm_runtime_resume_and_get(ctx->bdisp_dev->dev); |
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|
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if (ret < 0) { |
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dev_err(ctx->bdisp_dev->dev, "failed to set runtime PM\n"); |
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|
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if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) { |
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while ((buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx))) |
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v4l2_m2m_buf_done(buf, VB2_BUF_STATE_QUEUED); |
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} else { |
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while ((buf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx))) |
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v4l2_m2m_buf_done(buf, VB2_BUF_STATE_QUEUED); |
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} |
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|
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return ret; |
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} |
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|
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return 0; |
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} |
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|
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static void bdisp_stop_streaming(struct vb2_queue *q) |
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{ |
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struct bdisp_ctx *ctx = q->drv_priv; |
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|
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__bdisp_job_abort(ctx); |
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|
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pm_runtime_put(ctx->bdisp_dev->dev); |
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} |
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|
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static const struct vb2_ops bdisp_qops = { |
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.queue_setup = bdisp_queue_setup, |
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.buf_prepare = bdisp_buf_prepare, |
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.buf_queue = bdisp_buf_queue, |
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.wait_prepare = vb2_ops_wait_prepare, |
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.wait_finish = vb2_ops_wait_finish, |
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.stop_streaming = bdisp_stop_streaming, |
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.start_streaming = bdisp_start_streaming, |
|
}; |
|
|
|
static int queue_init(void *priv, |
|
struct vb2_queue *src_vq, struct vb2_queue *dst_vq) |
|
{ |
|
struct bdisp_ctx *ctx = priv; |
|
int ret; |
|
|
|
memset(src_vq, 0, sizeof(*src_vq)); |
|
src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; |
|
src_vq->io_modes = VB2_MMAP | VB2_DMABUF; |
|
src_vq->drv_priv = ctx; |
|
src_vq->ops = &bdisp_qops; |
|
src_vq->mem_ops = &vb2_dma_contig_memops; |
|
src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer); |
|
src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY; |
|
src_vq->lock = &ctx->bdisp_dev->lock; |
|
src_vq->dev = ctx->bdisp_dev->v4l2_dev.dev; |
|
|
|
ret = vb2_queue_init(src_vq); |
|
if (ret) |
|
return ret; |
|
|
|
memset(dst_vq, 0, sizeof(*dst_vq)); |
|
dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
|
dst_vq->io_modes = VB2_MMAP | VB2_DMABUF; |
|
dst_vq->drv_priv = ctx; |
|
dst_vq->ops = &bdisp_qops; |
|
dst_vq->mem_ops = &vb2_dma_contig_memops; |
|
dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer); |
|
dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY; |
|
dst_vq->lock = &ctx->bdisp_dev->lock; |
|
dst_vq->dev = ctx->bdisp_dev->v4l2_dev.dev; |
|
|
|
return vb2_queue_init(dst_vq); |
|
} |
|
|
|
static int bdisp_open(struct file *file) |
|
{ |
|
struct bdisp_dev *bdisp = video_drvdata(file); |
|
struct bdisp_ctx *ctx = NULL; |
|
int ret; |
|
|
|
if (mutex_lock_interruptible(&bdisp->lock)) |
|
return -ERESTARTSYS; |
|
|
|
/* Allocate memory for both context and node */ |
|
ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); |
|
if (!ctx) { |
|
ret = -ENOMEM; |
|
goto unlock; |
|
} |
|
ctx->bdisp_dev = bdisp; |
|
|
|
if (bdisp_hw_alloc_nodes(ctx)) { |
|
dev_err(bdisp->dev, "no memory for nodes\n"); |
|
ret = -ENOMEM; |
|
goto mem_ctx; |
|
} |
|
|
|
v4l2_fh_init(&ctx->fh, bdisp->m2m.vdev); |
|
|
|
ret = bdisp_ctrls_create(ctx); |
|
if (ret) { |
|
dev_err(bdisp->dev, "Failed to create control\n"); |
|
goto error_fh; |
|
} |
|
|
|
/* Use separate control handler per file handle */ |
|
ctx->fh.ctrl_handler = &ctx->ctrl_handler; |
|
file->private_data = &ctx->fh; |
|
v4l2_fh_add(&ctx->fh); |
|
|
|
/* Default format */ |
|
ctx->src = bdisp_dflt_fmt; |
|
ctx->dst = bdisp_dflt_fmt; |
|
|
|
/* Setup the device context for mem2mem mode. */ |
|
ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(bdisp->m2m.m2m_dev, ctx, |
|
queue_init); |
|
if (IS_ERR(ctx->fh.m2m_ctx)) { |
|
dev_err(bdisp->dev, "Failed to initialize m2m context\n"); |
|
ret = PTR_ERR(ctx->fh.m2m_ctx); |
|
goto error_ctrls; |
|
} |
|
|
|
bdisp->m2m.refcnt++; |
|
set_bit(ST_M2M_OPEN, &bdisp->state); |
|
|
|
dev_dbg(bdisp->dev, "driver opened, ctx = 0x%p\n", ctx); |
|
|
|
mutex_unlock(&bdisp->lock); |
|
|
|
return 0; |
|
|
|
error_ctrls: |
|
bdisp_ctrls_delete(ctx); |
|
v4l2_fh_del(&ctx->fh); |
|
error_fh: |
|
v4l2_fh_exit(&ctx->fh); |
|
bdisp_hw_free_nodes(ctx); |
|
mem_ctx: |
|
kfree(ctx); |
|
unlock: |
|
mutex_unlock(&bdisp->lock); |
|
|
|
return ret; |
|
} |
|
|
|
static int bdisp_release(struct file *file) |
|
{ |
|
struct bdisp_ctx *ctx = fh_to_ctx(file->private_data); |
|
struct bdisp_dev *bdisp = ctx->bdisp_dev; |
|
|
|
dev_dbg(bdisp->dev, "%s\n", __func__); |
|
|
|
mutex_lock(&bdisp->lock); |
|
|
|
v4l2_m2m_ctx_release(ctx->fh.m2m_ctx); |
|
|
|
bdisp_ctrls_delete(ctx); |
|
|
|
v4l2_fh_del(&ctx->fh); |
|
v4l2_fh_exit(&ctx->fh); |
|
|
|
if (--bdisp->m2m.refcnt <= 0) |
|
clear_bit(ST_M2M_OPEN, &bdisp->state); |
|
|
|
bdisp_hw_free_nodes(ctx); |
|
|
|
kfree(ctx); |
|
|
|
mutex_unlock(&bdisp->lock); |
|
|
|
return 0; |
|
} |
|
|
|
static const struct v4l2_file_operations bdisp_fops = { |
|
.owner = THIS_MODULE, |
|
.open = bdisp_open, |
|
.release = bdisp_release, |
|
.poll = v4l2_m2m_fop_poll, |
|
.unlocked_ioctl = video_ioctl2, |
|
.mmap = v4l2_m2m_fop_mmap, |
|
}; |
|
|
|
static int bdisp_querycap(struct file *file, void *fh, |
|
struct v4l2_capability *cap) |
|
{ |
|
struct bdisp_ctx *ctx = fh_to_ctx(fh); |
|
struct bdisp_dev *bdisp = ctx->bdisp_dev; |
|
|
|
strscpy(cap->driver, bdisp->pdev->name, sizeof(cap->driver)); |
|
strscpy(cap->card, bdisp->pdev->name, sizeof(cap->card)); |
|
snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s%d", |
|
BDISP_NAME, bdisp->id); |
|
return 0; |
|
} |
|
|
|
static int bdisp_enum_fmt(struct file *file, void *fh, struct v4l2_fmtdesc *f) |
|
{ |
|
struct bdisp_ctx *ctx = fh_to_ctx(fh); |
|
const struct bdisp_fmt *fmt; |
|
|
|
if (f->index >= ARRAY_SIZE(bdisp_formats)) |
|
return -EINVAL; |
|
|
|
fmt = &bdisp_formats[f->index]; |
|
|
|
if ((fmt->pixelformat == V4L2_PIX_FMT_YUV420) && |
|
(f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)) { |
|
dev_dbg(ctx->bdisp_dev->dev, "No YU12 on capture\n"); |
|
return -EINVAL; |
|
} |
|
f->pixelformat = fmt->pixelformat; |
|
|
|
return 0; |
|
} |
|
|
|
static int bdisp_g_fmt(struct file *file, void *fh, struct v4l2_format *f) |
|
{ |
|
struct bdisp_ctx *ctx = fh_to_ctx(fh); |
|
struct v4l2_pix_format *pix; |
|
struct bdisp_frame *frame = ctx_get_frame(ctx, f->type); |
|
|
|
if (IS_ERR(frame)) { |
|
dev_err(ctx->bdisp_dev->dev, "Invalid frame (%p)\n", frame); |
|
return PTR_ERR(frame); |
|
} |
|
|
|
pix = &f->fmt.pix; |
|
pix->width = frame->width; |
|
pix->height = frame->height; |
|
pix->pixelformat = frame->fmt->pixelformat; |
|
pix->field = frame->field; |
|
pix->bytesperline = frame->bytesperline; |
|
pix->sizeimage = frame->sizeimage; |
|
pix->colorspace = (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) ? |
|
frame->colorspace : bdisp_dflt_fmt.colorspace; |
|
|
|
return 0; |
|
} |
|
|
|
static int bdisp_try_fmt(struct file *file, void *fh, struct v4l2_format *f) |
|
{ |
|
struct bdisp_ctx *ctx = fh_to_ctx(fh); |
|
struct v4l2_pix_format *pix = &f->fmt.pix; |
|
const struct bdisp_fmt *format; |
|
u32 in_w, in_h; |
|
|
|
format = bdisp_find_fmt(pix->pixelformat); |
|
if (!format) { |
|
dev_dbg(ctx->bdisp_dev->dev, "Unknown format 0x%x\n", |
|
pix->pixelformat); |
|
return -EINVAL; |
|
} |
|
|
|
/* YUV420P only supported for VIDEO_OUTPUT */ |
|
if ((format->pixelformat == V4L2_PIX_FMT_YUV420) && |
|
(f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)) { |
|
dev_dbg(ctx->bdisp_dev->dev, "No YU12 on capture\n"); |
|
return -EINVAL; |
|
} |
|
|
|
/* Field (interlaced only supported on OUTPUT) */ |
|
if ((f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) || |
|
(pix->field != V4L2_FIELD_INTERLACED)) |
|
pix->field = V4L2_FIELD_NONE; |
|
|
|
/* Adjust width & height */ |
|
in_w = pix->width; |
|
in_h = pix->height; |
|
v4l_bound_align_image(&pix->width, |
|
BDISP_MIN_W, BDISP_MAX_W, |
|
ffs(format->w_align) - 1, |
|
&pix->height, |
|
BDISP_MIN_H, BDISP_MAX_H, |
|
ffs(format->h_align) - 1, |
|
0); |
|
if ((pix->width != in_w) || (pix->height != in_h)) |
|
dev_dbg(ctx->bdisp_dev->dev, |
|
"%s size updated: %dx%d -> %dx%d\n", __func__, |
|
in_w, in_h, pix->width, pix->height); |
|
|
|
pix->bytesperline = (pix->width * format->bpp_plane0) / 8; |
|
pix->sizeimage = (pix->width * pix->height * format->bpp) / 8; |
|
|
|
if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) |
|
pix->colorspace = bdisp_dflt_fmt.colorspace; |
|
|
|
return 0; |
|
} |
|
|
|
static int bdisp_s_fmt(struct file *file, void *fh, struct v4l2_format *f) |
|
{ |
|
struct bdisp_ctx *ctx = fh_to_ctx(fh); |
|
struct vb2_queue *vq; |
|
struct bdisp_frame *frame; |
|
struct v4l2_pix_format *pix; |
|
int ret; |
|
u32 state; |
|
|
|
ret = bdisp_try_fmt(file, fh, f); |
|
if (ret) { |
|
dev_err(ctx->bdisp_dev->dev, "Cannot set format\n"); |
|
return ret; |
|
} |
|
|
|
vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type); |
|
if (vb2_is_streaming(vq)) { |
|
dev_err(ctx->bdisp_dev->dev, "queue (%d) busy\n", f->type); |
|
return -EBUSY; |
|
} |
|
|
|
frame = (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) ? |
|
&ctx->src : &ctx->dst; |
|
pix = &f->fmt.pix; |
|
frame->fmt = bdisp_find_fmt(pix->pixelformat); |
|
if (!frame->fmt) { |
|
dev_err(ctx->bdisp_dev->dev, "Unknown format 0x%x\n", |
|
pix->pixelformat); |
|
return -EINVAL; |
|
} |
|
|
|
frame->width = pix->width; |
|
frame->height = pix->height; |
|
frame->bytesperline = pix->bytesperline; |
|
frame->sizeimage = pix->sizeimage; |
|
frame->field = pix->field; |
|
if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) |
|
frame->colorspace = pix->colorspace; |
|
|
|
frame->crop.width = frame->width; |
|
frame->crop.height = frame->height; |
|
frame->crop.left = 0; |
|
frame->crop.top = 0; |
|
|
|
state = BDISP_PARAMS; |
|
state |= (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) ? |
|
BDISP_DST_FMT : BDISP_SRC_FMT; |
|
bdisp_ctx_state_lock_set(state, ctx); |
|
|
|
return 0; |
|
} |
|
|
|
static int bdisp_g_selection(struct file *file, void *fh, |
|
struct v4l2_selection *s) |
|
{ |
|
struct bdisp_frame *frame; |
|
struct bdisp_ctx *ctx = fh_to_ctx(fh); |
|
|
|
frame = ctx_get_frame(ctx, s->type); |
|
if (IS_ERR(frame)) { |
|
dev_err(ctx->bdisp_dev->dev, "Invalid frame (%p)\n", frame); |
|
return PTR_ERR(frame); |
|
} |
|
|
|
switch (s->type) { |
|
case V4L2_BUF_TYPE_VIDEO_OUTPUT: |
|
switch (s->target) { |
|
case V4L2_SEL_TGT_CROP: |
|
/* cropped frame */ |
|
s->r = frame->crop; |
|
break; |
|
case V4L2_SEL_TGT_CROP_DEFAULT: |
|
case V4L2_SEL_TGT_CROP_BOUNDS: |
|
/* complete frame */ |
|
s->r.left = 0; |
|
s->r.top = 0; |
|
s->r.width = frame->width; |
|
s->r.height = frame->height; |
|
break; |
|
default: |
|
dev_err(ctx->bdisp_dev->dev, "Invalid target\n"); |
|
return -EINVAL; |
|
} |
|
break; |
|
|
|
case V4L2_BUF_TYPE_VIDEO_CAPTURE: |
|
switch (s->target) { |
|
case V4L2_SEL_TGT_COMPOSE: |
|
case V4L2_SEL_TGT_COMPOSE_PADDED: |
|
/* composed (cropped) frame */ |
|
s->r = frame->crop; |
|
break; |
|
case V4L2_SEL_TGT_COMPOSE_DEFAULT: |
|
case V4L2_SEL_TGT_COMPOSE_BOUNDS: |
|
/* complete frame */ |
|
s->r.left = 0; |
|
s->r.top = 0; |
|
s->r.width = frame->width; |
|
s->r.height = frame->height; |
|
break; |
|
default: |
|
dev_err(ctx->bdisp_dev->dev, "Invalid target\n"); |
|
return -EINVAL; |
|
} |
|
break; |
|
|
|
default: |
|
dev_err(ctx->bdisp_dev->dev, "Invalid type\n"); |
|
return -EINVAL; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static int is_rect_enclosed(struct v4l2_rect *a, struct v4l2_rect *b) |
|
{ |
|
/* Return 1 if a is enclosed in b, or 0 otherwise. */ |
|
|
|
if (a->left < b->left || a->top < b->top) |
|
return 0; |
|
|
|
if (a->left + a->width > b->left + b->width) |
|
return 0; |
|
|
|
if (a->top + a->height > b->top + b->height) |
|
return 0; |
|
|
|
return 1; |
|
} |
|
|
|
static int bdisp_s_selection(struct file *file, void *fh, |
|
struct v4l2_selection *s) |
|
{ |
|
struct bdisp_frame *frame; |
|
struct bdisp_ctx *ctx = fh_to_ctx(fh); |
|
struct v4l2_rect *in, out; |
|
bool valid = false; |
|
|
|
if ((s->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) && |
|
(s->target == V4L2_SEL_TGT_CROP)) |
|
valid = true; |
|
|
|
if ((s->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) && |
|
(s->target == V4L2_SEL_TGT_COMPOSE)) |
|
valid = true; |
|
|
|
if (!valid) { |
|
dev_err(ctx->bdisp_dev->dev, "Invalid type / target\n"); |
|
return -EINVAL; |
|
} |
|
|
|
frame = ctx_get_frame(ctx, s->type); |
|
if (IS_ERR(frame)) { |
|
dev_err(ctx->bdisp_dev->dev, "Invalid frame (%p)\n", frame); |
|
return PTR_ERR(frame); |
|
} |
|
|
|
in = &s->r; |
|
out = *in; |
|
|
|
/* Align and check origin */ |
|
out.left = ALIGN(in->left, frame->fmt->w_align); |
|
out.top = ALIGN(in->top, frame->fmt->h_align); |
|
|
|
if ((out.left < 0) || (out.left >= frame->width) || |
|
(out.top < 0) || (out.top >= frame->height)) { |
|
dev_err(ctx->bdisp_dev->dev, |
|
"Invalid crop: %dx%d@(%d,%d) vs frame: %dx%d\n", |
|
out.width, out.height, out.left, out.top, |
|
frame->width, frame->height); |
|
return -EINVAL; |
|
} |
|
|
|
/* Align and check size */ |
|
out.width = ALIGN(in->width, frame->fmt->w_align); |
|
out.height = ALIGN(in->height, frame->fmt->w_align); |
|
|
|
if (((out.left + out.width) > frame->width) || |
|
((out.top + out.height) > frame->height)) { |
|
dev_err(ctx->bdisp_dev->dev, |
|
"Invalid crop: %dx%d@(%d,%d) vs frame: %dx%d\n", |
|
out.width, out.height, out.left, out.top, |
|
frame->width, frame->height); |
|
return -EINVAL; |
|
} |
|
|
|
/* Checks adjust constraints flags */ |
|
if (s->flags & V4L2_SEL_FLAG_LE && !is_rect_enclosed(&out, in)) |
|
return -ERANGE; |
|
|
|
if (s->flags & V4L2_SEL_FLAG_GE && !is_rect_enclosed(in, &out)) |
|
return -ERANGE; |
|
|
|
if ((out.left != in->left) || (out.top != in->top) || |
|
(out.width != in->width) || (out.height != in->height)) { |
|
dev_dbg(ctx->bdisp_dev->dev, |
|
"%s crop updated: %dx%d@(%d,%d) -> %dx%d@(%d,%d)\n", |
|
__func__, in->width, in->height, in->left, in->top, |
|
out.width, out.height, out.left, out.top); |
|
*in = out; |
|
} |
|
|
|
frame->crop = out; |
|
|
|
bdisp_ctx_state_lock_set(BDISP_PARAMS, ctx); |
|
|
|
return 0; |
|
} |
|
|
|
static int bdisp_streamon(struct file *file, void *fh, enum v4l2_buf_type type) |
|
{ |
|
struct bdisp_ctx *ctx = fh_to_ctx(fh); |
|
|
|
if ((type == V4L2_BUF_TYPE_VIDEO_OUTPUT) && |
|
!bdisp_ctx_state_is_set(BDISP_SRC_FMT, ctx)) { |
|
dev_err(ctx->bdisp_dev->dev, "src not defined\n"); |
|
return -EINVAL; |
|
} |
|
|
|
if ((type == V4L2_BUF_TYPE_VIDEO_CAPTURE) && |
|
!bdisp_ctx_state_is_set(BDISP_DST_FMT, ctx)) { |
|
dev_err(ctx->bdisp_dev->dev, "dst not defined\n"); |
|
return -EINVAL; |
|
} |
|
|
|
return v4l2_m2m_streamon(file, ctx->fh.m2m_ctx, type); |
|
} |
|
|
|
static const struct v4l2_ioctl_ops bdisp_ioctl_ops = { |
|
.vidioc_querycap = bdisp_querycap, |
|
.vidioc_enum_fmt_vid_cap = bdisp_enum_fmt, |
|
.vidioc_enum_fmt_vid_out = bdisp_enum_fmt, |
|
.vidioc_g_fmt_vid_cap = bdisp_g_fmt, |
|
.vidioc_g_fmt_vid_out = bdisp_g_fmt, |
|
.vidioc_try_fmt_vid_cap = bdisp_try_fmt, |
|
.vidioc_try_fmt_vid_out = bdisp_try_fmt, |
|
.vidioc_s_fmt_vid_cap = bdisp_s_fmt, |
|
.vidioc_s_fmt_vid_out = bdisp_s_fmt, |
|
.vidioc_g_selection = bdisp_g_selection, |
|
.vidioc_s_selection = bdisp_s_selection, |
|
.vidioc_reqbufs = v4l2_m2m_ioctl_reqbufs, |
|
.vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs, |
|
.vidioc_expbuf = v4l2_m2m_ioctl_expbuf, |
|
.vidioc_querybuf = v4l2_m2m_ioctl_querybuf, |
|
.vidioc_qbuf = v4l2_m2m_ioctl_qbuf, |
|
.vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf, |
|
.vidioc_streamon = bdisp_streamon, |
|
.vidioc_streamoff = v4l2_m2m_ioctl_streamoff, |
|
.vidioc_subscribe_event = v4l2_ctrl_subscribe_event, |
|
.vidioc_unsubscribe_event = v4l2_event_unsubscribe, |
|
}; |
|
|
|
static int bdisp_register_device(struct bdisp_dev *bdisp) |
|
{ |
|
int ret; |
|
|
|
if (!bdisp) |
|
return -ENODEV; |
|
|
|
bdisp->vdev.fops = &bdisp_fops; |
|
bdisp->vdev.ioctl_ops = &bdisp_ioctl_ops; |
|
bdisp->vdev.release = video_device_release_empty; |
|
bdisp->vdev.lock = &bdisp->lock; |
|
bdisp->vdev.vfl_dir = VFL_DIR_M2M; |
|
bdisp->vdev.v4l2_dev = &bdisp->v4l2_dev; |
|
bdisp->vdev.device_caps = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_M2M; |
|
snprintf(bdisp->vdev.name, sizeof(bdisp->vdev.name), "%s.%d", |
|
BDISP_NAME, bdisp->id); |
|
|
|
video_set_drvdata(&bdisp->vdev, bdisp); |
|
|
|
bdisp->m2m.vdev = &bdisp->vdev; |
|
bdisp->m2m.m2m_dev = v4l2_m2m_init(&bdisp_m2m_ops); |
|
if (IS_ERR(bdisp->m2m.m2m_dev)) { |
|
dev_err(bdisp->dev, "failed to initialize v4l2-m2m device\n"); |
|
return PTR_ERR(bdisp->m2m.m2m_dev); |
|
} |
|
|
|
ret = video_register_device(&bdisp->vdev, VFL_TYPE_VIDEO, -1); |
|
if (ret) { |
|
dev_err(bdisp->dev, |
|
"%s(): failed to register video device\n", __func__); |
|
v4l2_m2m_release(bdisp->m2m.m2m_dev); |
|
return ret; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static void bdisp_unregister_device(struct bdisp_dev *bdisp) |
|
{ |
|
if (!bdisp) |
|
return; |
|
|
|
if (bdisp->m2m.m2m_dev) |
|
v4l2_m2m_release(bdisp->m2m.m2m_dev); |
|
|
|
video_unregister_device(bdisp->m2m.vdev); |
|
} |
|
|
|
static irqreturn_t bdisp_irq_thread(int irq, void *priv) |
|
{ |
|
struct bdisp_dev *bdisp = priv; |
|
struct bdisp_ctx *ctx; |
|
|
|
spin_lock(&bdisp->slock); |
|
|
|
bdisp_dbg_perf_end(bdisp); |
|
|
|
cancel_delayed_work(&bdisp->timeout_work); |
|
|
|
if (!test_and_clear_bit(ST_M2M_RUNNING, &bdisp->state)) |
|
goto isr_unlock; |
|
|
|
if (test_and_clear_bit(ST_M2M_SUSPENDING, &bdisp->state)) { |
|
set_bit(ST_M2M_SUSPENDED, &bdisp->state); |
|
wake_up(&bdisp->irq_queue); |
|
goto isr_unlock; |
|
} |
|
|
|
ctx = v4l2_m2m_get_curr_priv(bdisp->m2m.m2m_dev); |
|
if (!ctx || !ctx->fh.m2m_ctx) |
|
goto isr_unlock; |
|
|
|
spin_unlock(&bdisp->slock); |
|
|
|
bdisp_job_finish(ctx, VB2_BUF_STATE_DONE); |
|
|
|
if (bdisp_ctx_state_is_set(BDISP_CTX_STOP_REQ, ctx)) { |
|
bdisp_ctx_state_lock_clear(BDISP_CTX_STOP_REQ, ctx); |
|
wake_up(&bdisp->irq_queue); |
|
} |
|
|
|
return IRQ_HANDLED; |
|
|
|
isr_unlock: |
|
spin_unlock(&bdisp->slock); |
|
|
|
return IRQ_HANDLED; |
|
} |
|
|
|
static irqreturn_t bdisp_irq_handler(int irq, void *priv) |
|
{ |
|
if (bdisp_hw_get_and_clear_irq((struct bdisp_dev *)priv)) |
|
return IRQ_NONE; |
|
else |
|
return IRQ_WAKE_THREAD; |
|
} |
|
|
|
static void bdisp_irq_timeout(struct work_struct *ptr) |
|
{ |
|
struct delayed_work *twork = to_delayed_work(ptr); |
|
struct bdisp_dev *bdisp = container_of(twork, struct bdisp_dev, |
|
timeout_work); |
|
struct bdisp_ctx *ctx; |
|
|
|
ctx = v4l2_m2m_get_curr_priv(bdisp->m2m.m2m_dev); |
|
|
|
dev_err(ctx->bdisp_dev->dev, "Device work timeout\n"); |
|
|
|
spin_lock(&bdisp->slock); |
|
clear_bit(ST_M2M_RUNNING, &bdisp->state); |
|
spin_unlock(&bdisp->slock); |
|
|
|
bdisp_hw_reset(bdisp); |
|
|
|
bdisp_job_finish(ctx, VB2_BUF_STATE_ERROR); |
|
} |
|
|
|
static int bdisp_m2m_suspend(struct bdisp_dev *bdisp) |
|
{ |
|
unsigned long flags; |
|
int timeout; |
|
|
|
spin_lock_irqsave(&bdisp->slock, flags); |
|
if (!test_bit(ST_M2M_RUNNING, &bdisp->state)) { |
|
spin_unlock_irqrestore(&bdisp->slock, flags); |
|
return 0; |
|
} |
|
clear_bit(ST_M2M_SUSPENDED, &bdisp->state); |
|
set_bit(ST_M2M_SUSPENDING, &bdisp->state); |
|
spin_unlock_irqrestore(&bdisp->slock, flags); |
|
|
|
timeout = wait_event_timeout(bdisp->irq_queue, |
|
test_bit(ST_M2M_SUSPENDED, &bdisp->state), |
|
BDISP_WORK_TIMEOUT); |
|
|
|
clear_bit(ST_M2M_SUSPENDING, &bdisp->state); |
|
|
|
if (!timeout) { |
|
dev_err(bdisp->dev, "%s IRQ timeout\n", __func__); |
|
return -EAGAIN; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static int bdisp_m2m_resume(struct bdisp_dev *bdisp) |
|
{ |
|
struct bdisp_ctx *ctx; |
|
unsigned long flags; |
|
|
|
spin_lock_irqsave(&bdisp->slock, flags); |
|
ctx = bdisp->m2m.ctx; |
|
bdisp->m2m.ctx = NULL; |
|
spin_unlock_irqrestore(&bdisp->slock, flags); |
|
|
|
if (test_and_clear_bit(ST_M2M_SUSPENDED, &bdisp->state)) |
|
bdisp_job_finish(ctx, VB2_BUF_STATE_ERROR); |
|
|
|
return 0; |
|
} |
|
|
|
static int bdisp_runtime_resume(struct device *dev) |
|
{ |
|
struct bdisp_dev *bdisp = dev_get_drvdata(dev); |
|
int ret = clk_enable(bdisp->clock); |
|
|
|
if (ret) |
|
return ret; |
|
|
|
return bdisp_m2m_resume(bdisp); |
|
} |
|
|
|
static int bdisp_runtime_suspend(struct device *dev) |
|
{ |
|
struct bdisp_dev *bdisp = dev_get_drvdata(dev); |
|
int ret = bdisp_m2m_suspend(bdisp); |
|
|
|
if (!ret) |
|
clk_disable(bdisp->clock); |
|
|
|
return ret; |
|
} |
|
|
|
static int bdisp_resume(struct device *dev) |
|
{ |
|
struct bdisp_dev *bdisp = dev_get_drvdata(dev); |
|
unsigned long flags; |
|
int opened; |
|
|
|
spin_lock_irqsave(&bdisp->slock, flags); |
|
opened = test_bit(ST_M2M_OPEN, &bdisp->state); |
|
spin_unlock_irqrestore(&bdisp->slock, flags); |
|
|
|
if (!opened) |
|
return 0; |
|
|
|
if (!pm_runtime_suspended(dev)) |
|
return bdisp_runtime_resume(dev); |
|
|
|
return 0; |
|
} |
|
|
|
static int bdisp_suspend(struct device *dev) |
|
{ |
|
if (!pm_runtime_suspended(dev)) |
|
return bdisp_runtime_suspend(dev); |
|
|
|
return 0; |
|
} |
|
|
|
static const struct dev_pm_ops bdisp_pm_ops = { |
|
.suspend = bdisp_suspend, |
|
.resume = bdisp_resume, |
|
.runtime_suspend = bdisp_runtime_suspend, |
|
.runtime_resume = bdisp_runtime_resume, |
|
}; |
|
|
|
static int bdisp_remove(struct platform_device *pdev) |
|
{ |
|
struct bdisp_dev *bdisp = platform_get_drvdata(pdev); |
|
|
|
bdisp_unregister_device(bdisp); |
|
|
|
bdisp_hw_free_filters(bdisp->dev); |
|
|
|
pm_runtime_disable(&pdev->dev); |
|
|
|
bdisp_debugfs_remove(bdisp); |
|
|
|
v4l2_device_unregister(&bdisp->v4l2_dev); |
|
|
|
if (!IS_ERR(bdisp->clock)) |
|
clk_unprepare(bdisp->clock); |
|
|
|
destroy_workqueue(bdisp->work_queue); |
|
|
|
dev_dbg(&pdev->dev, "%s driver unloaded\n", pdev->name); |
|
|
|
return 0; |
|
} |
|
|
|
static int bdisp_probe(struct platform_device *pdev) |
|
{ |
|
struct bdisp_dev *bdisp; |
|
struct resource *res; |
|
struct device *dev = &pdev->dev; |
|
int ret; |
|
|
|
dev_dbg(dev, "%s\n", __func__); |
|
|
|
bdisp = devm_kzalloc(dev, sizeof(struct bdisp_dev), GFP_KERNEL); |
|
if (!bdisp) |
|
return -ENOMEM; |
|
|
|
ret = dma_coerce_mask_and_coherent(dev, DMA_BIT_MASK(32)); |
|
if (ret) |
|
return ret; |
|
|
|
bdisp->pdev = pdev; |
|
bdisp->dev = dev; |
|
platform_set_drvdata(pdev, bdisp); |
|
|
|
if (dev->of_node) |
|
bdisp->id = of_alias_get_id(pdev->dev.of_node, BDISP_NAME); |
|
else |
|
bdisp->id = pdev->id; |
|
|
|
init_waitqueue_head(&bdisp->irq_queue); |
|
INIT_DELAYED_WORK(&bdisp->timeout_work, bdisp_irq_timeout); |
|
bdisp->work_queue = create_workqueue(BDISP_NAME); |
|
|
|
spin_lock_init(&bdisp->slock); |
|
mutex_init(&bdisp->lock); |
|
|
|
/* get resources */ |
|
res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
|
bdisp->regs = devm_ioremap_resource(dev, res); |
|
if (IS_ERR(bdisp->regs)) { |
|
ret = PTR_ERR(bdisp->regs); |
|
goto err_wq; |
|
} |
|
|
|
bdisp->clock = devm_clk_get(dev, BDISP_NAME); |
|
if (IS_ERR(bdisp->clock)) { |
|
dev_err(dev, "failed to get clock\n"); |
|
ret = PTR_ERR(bdisp->clock); |
|
goto err_wq; |
|
} |
|
|
|
ret = clk_prepare(bdisp->clock); |
|
if (ret < 0) { |
|
dev_err(dev, "clock prepare failed\n"); |
|
bdisp->clock = ERR_PTR(-EINVAL); |
|
goto err_wq; |
|
} |
|
|
|
res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); |
|
if (!res) { |
|
dev_err(dev, "failed to get IRQ resource\n"); |
|
ret = -EINVAL; |
|
goto err_clk; |
|
} |
|
|
|
ret = devm_request_threaded_irq(dev, res->start, bdisp_irq_handler, |
|
bdisp_irq_thread, IRQF_ONESHOT, |
|
pdev->name, bdisp); |
|
if (ret) { |
|
dev_err(dev, "failed to install irq\n"); |
|
goto err_clk; |
|
} |
|
|
|
/* v4l2 register */ |
|
ret = v4l2_device_register(dev, &bdisp->v4l2_dev); |
|
if (ret) { |
|
dev_err(dev, "failed to register\n"); |
|
goto err_clk; |
|
} |
|
|
|
/* Debug */ |
|
bdisp_debugfs_create(bdisp); |
|
|
|
/* Power management */ |
|
pm_runtime_enable(dev); |
|
ret = pm_runtime_resume_and_get(dev); |
|
if (ret < 0) { |
|
dev_err(dev, "failed to set PM\n"); |
|
goto err_remove; |
|
} |
|
|
|
/* Filters */ |
|
if (bdisp_hw_alloc_filters(bdisp->dev)) { |
|
dev_err(bdisp->dev, "no memory for filters\n"); |
|
ret = -ENOMEM; |
|
goto err_pm; |
|
} |
|
|
|
/* Register */ |
|
ret = bdisp_register_device(bdisp); |
|
if (ret) { |
|
dev_err(dev, "failed to register\n"); |
|
goto err_filter; |
|
} |
|
|
|
dev_info(dev, "%s%d registered as /dev/video%d\n", BDISP_NAME, |
|
bdisp->id, bdisp->vdev.num); |
|
|
|
pm_runtime_put(dev); |
|
|
|
return 0; |
|
|
|
err_filter: |
|
bdisp_hw_free_filters(bdisp->dev); |
|
err_pm: |
|
pm_runtime_put(dev); |
|
err_remove: |
|
bdisp_debugfs_remove(bdisp); |
|
v4l2_device_unregister(&bdisp->v4l2_dev); |
|
err_clk: |
|
if (!IS_ERR(bdisp->clock)) |
|
clk_unprepare(bdisp->clock); |
|
err_wq: |
|
destroy_workqueue(bdisp->work_queue); |
|
return ret; |
|
} |
|
|
|
static const struct of_device_id bdisp_match_types[] = { |
|
{ |
|
.compatible = "st,stih407-bdisp", |
|
}, |
|
{ /* end node */ } |
|
}; |
|
|
|
MODULE_DEVICE_TABLE(of, bdisp_match_types); |
|
|
|
static struct platform_driver bdisp_driver = { |
|
.probe = bdisp_probe, |
|
.remove = bdisp_remove, |
|
.driver = { |
|
.name = BDISP_NAME, |
|
.of_match_table = bdisp_match_types, |
|
.pm = &bdisp_pm_ops, |
|
}, |
|
}; |
|
|
|
module_platform_driver(bdisp_driver); |
|
|
|
MODULE_DESCRIPTION("2D blitter for STMicroelectronics SoC"); |
|
MODULE_AUTHOR("Fabien Dessenne <[email protected]>"); |
|
MODULE_LICENSE("GPL");
|
|
|