From patchwork Thu Nov 14 05:12:36 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Helen Mae Koike Fornazier X-Patchwork-Id: 11243063 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id CA18E6C1 for ; Thu, 14 Nov 2019 05:15:46 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 94D0520659 for ; Thu, 14 Nov 2019 05:15:46 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="P8a1zAz2" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 94D0520659 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=collabora.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=u12QRxpqvveycnB0PNCYSY3vfifT7ZuJSqZZa7CkBw0=; b=P8a1zAz2Xlos+F 26UOjCa9rxOcRFp8hZrpjfXNq61UuWoed4bWhZucDwF/suDlZOXAMMpUVycyzSIBT1+0frDaQtpIs aoVnMoawfD3tkj1gRmQgph3I1P/upxcDBoyv+xDlsU5KtdmPmUVgf98WJGgFI0pJ1h3t5ql3m/mMp Ufxvi03W/8Lj6ryeD/H9sP5IZfSTTrqXN+R2XoUab1cqwb9kl9EUl7W/CVcdiYsoDxZke992/WhQs 1XIwx8GU/o+Ek4RE9+bcqOAuztqfELpg5sEDklUddQ5vhSsy8dOF7hpBOXDZjvS7KulOJ5B70oMCd nohOQ4HgE8K3T8z5ikng==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1iV7Ts-0000u6-K4; Thu, 14 Nov 2019 05:15:44 +0000 Received: from bhuna.collabora.co.uk ([2a00:1098:0:82:1000:25:2eeb:e3e3]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1iV7S2-0006nl-Ts; Thu, 14 Nov 2019 05:14:00 +0000 Received: from floko.floko.floko (unknown [IPv6:2804:431:c7f0:da1c:a086:2727:e196:fd8a]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: koike) by bhuna.collabora.co.uk (Postfix) with ESMTPSA id 88566291066; Thu, 14 Nov 2019 05:13:42 +0000 (GMT) From: Helen Koike To: linux-rockchip@lists.infradead.org Subject: [PATCH v11 05/11] media: staging: rkisp1: add ISP1 statistics driver Date: Thu, 14 Nov 2019 02:12:36 -0300 Message-Id: <20191114051242.14651-6-helen.koike@collabora.com> X-Mailer: git-send-email 2.22.0 In-Reply-To: <20191114051242.14651-1-helen.koike@collabora.com> References: <20191114051242.14651-1-helen.koike@collabora.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191113_211351_239954_088E300C X-CRM114-Status: GOOD ( 16.86 ) X-Spam-Score: -0.0 (/) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (-0.0 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 SPF_HELO_PASS SPF: HELO matches SPF record -0.0 SPF_PASS SPF: sender matches SPF record X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: mark.rutland@arm.com, eddie.cai.linux@gmail.com, heiko@sntech.de, laurent.pinchart@ideasonboard.com, kernel@collabora.com, zyc@rock-chips.com, jacob-chen@iotwrt.com, hans.verkuil@cisco.com, Allon Huang , zhengsq@rock-chips.com, linux-media@vger.kernel.org, devicetree@vger.kernel.org, Jacob Chen , jeffy.chen@rock-chips.com, Helen Koike , robh+dt@kernel.org, mchehab@kernel.org, ezequiel@collabora.com, linux-arm-kernel@lists.infradead.org, gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, tfiga@chromium.org, sakari.ailus@linux.intel.com, Jacob Chen Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org From: Jacob Chen Add the capture video driver for rockchip isp1 statistics block. Signed-off-by: Jacob Chen Signed-off-by: Shunqian Zheng Signed-off-by: Yichong Zhong Signed-off-by: Jacob Chen Signed-off-by: Eddie Cai Signed-off-by: Jeffy Chen Signed-off-by: Allon Huang Signed-off-by: Tomasz Figa [refactored for upstream] Signed-off-by: Helen Koike --- Changes in v11: stats - fix compiling warnings - fix checkpatch errors Changes in v10: - unsquash Changes in v9: - replace v4l2_{dgb,info,warn,err} by dev_* - remove LOG_ISR_EXE_TIME ifndef's - constify ops structs - s/strlcpy/strscpy - add missing mutex_destroy() calls in rkisp1_register_stats_vdev error path - squash - move to staging Changes in v8: None Changes in v7: - s/strlcpy/strscpy - sort out the locks in isp stats - code styling and checkpatch fixes drivers/staging/media/rkisp1/isp_stats.c | 495 +++++++++++++++++++++++ drivers/staging/media/rkisp1/isp_stats.h | 60 +++ 2 files changed, 555 insertions(+) create mode 100644 drivers/staging/media/rkisp1/isp_stats.c create mode 100644 drivers/staging/media/rkisp1/isp_stats.h diff --git a/drivers/staging/media/rkisp1/isp_stats.c b/drivers/staging/media/rkisp1/isp_stats.c new file mode 100644 index 000000000000..f11b4cc5d791 --- /dev/null +++ b/drivers/staging/media/rkisp1/isp_stats.c @@ -0,0 +1,495 @@ +// SPDX-License-Identifier: (GPL-2.0+ OR MIT) +/* + * Rockchip ISP1 Driver - Stats subdevice + * + * Copyright (C) 2017 Rockchip Electronics Co., Ltd. + */ + +#include +#include +#include +#include +#include /* for ISP statistics */ + +#include "dev.h" +#include "regs.h" + +#define RKISP1_ISP_STATS_REQ_BUFS_MIN 2 +#define RKISP1_ISP_STATS_REQ_BUFS_MAX 8 + +static int rkisp1_stats_enum_fmt_meta_cap(struct file *file, void *priv, + struct v4l2_fmtdesc *f) +{ + struct video_device *video = video_devdata(file); + struct rkisp1_isp_stats_vdev *stats_vdev = video_get_drvdata(video); + + if (f->index > 0 || f->type != video->queue->type) + return -EINVAL; + + f->pixelformat = stats_vdev->vdev_fmt.fmt.meta.dataformat; + return 0; +} + +static int rkisp1_stats_g_fmt_meta_cap(struct file *file, void *priv, + struct v4l2_format *f) +{ + struct video_device *video = video_devdata(file); + struct rkisp1_isp_stats_vdev *stats_vdev = video_get_drvdata(video); + struct v4l2_meta_format *meta = &f->fmt.meta; + + if (f->type != video->queue->type) + return -EINVAL; + + memset(meta, 0, sizeof(*meta)); + meta->dataformat = stats_vdev->vdev_fmt.fmt.meta.dataformat; + meta->buffersize = stats_vdev->vdev_fmt.fmt.meta.buffersize; + + return 0; +} + +static int rkisp1_stats_querycap(struct file *file, + void *priv, struct v4l2_capability *cap) +{ + struct video_device *vdev = video_devdata(file); + + strscpy(cap->driver, DRIVER_NAME, sizeof(cap->driver)); + strscpy(cap->card, vdev->name, sizeof(cap->card)); + strscpy(cap->bus_info, "platform: " DRIVER_NAME, sizeof(cap->bus_info)); + + return 0; +} + +/* ISP video device IOCTLs */ +static const struct v4l2_ioctl_ops rkisp1_stats_ioctl = { + .vidioc_reqbufs = vb2_ioctl_reqbufs, + .vidioc_querybuf = vb2_ioctl_querybuf, + .vidioc_create_bufs = vb2_ioctl_create_bufs, + .vidioc_qbuf = vb2_ioctl_qbuf, + .vidioc_dqbuf = vb2_ioctl_dqbuf, + .vidioc_prepare_buf = vb2_ioctl_prepare_buf, + .vidioc_expbuf = vb2_ioctl_expbuf, + .vidioc_streamon = vb2_ioctl_streamon, + .vidioc_streamoff = vb2_ioctl_streamoff, + .vidioc_enum_fmt_meta_cap = rkisp1_stats_enum_fmt_meta_cap, + .vidioc_g_fmt_meta_cap = rkisp1_stats_g_fmt_meta_cap, + .vidioc_s_fmt_meta_cap = rkisp1_stats_g_fmt_meta_cap, + .vidioc_try_fmt_meta_cap = rkisp1_stats_g_fmt_meta_cap, + .vidioc_querycap = rkisp1_stats_querycap, + .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, + .vidioc_unsubscribe_event = v4l2_event_unsubscribe, +}; + +static const struct v4l2_file_operations rkisp1_stats_fops = { + .mmap = vb2_fop_mmap, + .unlocked_ioctl = video_ioctl2, + .poll = vb2_fop_poll, + .open = v4l2_fh_open, + .release = vb2_fop_release +}; + +static int rkisp1_stats_vb2_queue_setup(struct vb2_queue *vq, + unsigned int *num_buffers, + unsigned int *num_planes, + unsigned int sizes[], + struct device *alloc_devs[]) +{ + struct rkisp1_isp_stats_vdev *stats_vdev = vq->drv_priv; + + *num_planes = 1; + + *num_buffers = clamp_t(u32, *num_buffers, RKISP1_ISP_STATS_REQ_BUFS_MIN, + RKISP1_ISP_STATS_REQ_BUFS_MAX); + + sizes[0] = sizeof(struct rkisp1_stat_buffer); + + INIT_LIST_HEAD(&stats_vdev->stat); + + return 0; +} + +static void rkisp1_stats_vb2_buf_queue(struct vb2_buffer *vb) +{ + struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); + struct rkisp1_buffer *stats_buf = to_rkisp1_buffer(vbuf); + struct vb2_queue *vq = vb->vb2_queue; + struct rkisp1_isp_stats_vdev *stats_dev = vq->drv_priv; + + stats_buf->vaddr[0] = vb2_plane_vaddr(vb, 0); + + mutex_lock(&stats_dev->wq_lock); + list_add_tail(&stats_buf->queue, &stats_dev->stat); + mutex_unlock(&stats_dev->wq_lock); +} + +static int rkisp1_stats_vb2_buf_prepare(struct vb2_buffer *vb) +{ + if (vb2_plane_size(vb, 0) < sizeof(struct rkisp1_stat_buffer)) + return -EINVAL; + + vb2_set_plane_payload(vb, 0, sizeof(struct rkisp1_stat_buffer)); + + return 0; +} + +static void rkisp1_stats_vb2_stop_streaming(struct vb2_queue *vq) +{ + struct rkisp1_isp_stats_vdev *stats_vdev = vq->drv_priv; + struct rkisp1_buffer *buf; + unsigned long flags; + unsigned int i; + + /* Make sure no new work queued in isr before draining wq */ + spin_lock_irqsave(&stats_vdev->irq_lock, flags); + stats_vdev->streamon = false; + spin_unlock_irqrestore(&stats_vdev->irq_lock, flags); + + drain_workqueue(stats_vdev->readout_wq); + + mutex_lock(&stats_vdev->wq_lock); + for (i = 0; i < RKISP1_ISP_STATS_REQ_BUFS_MAX; i++) { + if (list_empty(&stats_vdev->stat)) + break; + buf = list_first_entry(&stats_vdev->stat, + struct rkisp1_buffer, queue); + list_del(&buf->queue); + vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR); + } + mutex_unlock(&stats_vdev->wq_lock); +} + +static int +rkisp1_stats_vb2_start_streaming(struct vb2_queue *queue, + unsigned int count) +{ + struct rkisp1_isp_stats_vdev *stats_vdev = queue->drv_priv; + + stats_vdev->streamon = true; + + return 0; +} + +static const struct vb2_ops rkisp1_stats_vb2_ops = { + .queue_setup = rkisp1_stats_vb2_queue_setup, + .buf_queue = rkisp1_stats_vb2_buf_queue, + .buf_prepare = rkisp1_stats_vb2_buf_prepare, + .wait_prepare = vb2_ops_wait_prepare, + .wait_finish = vb2_ops_wait_finish, + .stop_streaming = rkisp1_stats_vb2_stop_streaming, + .start_streaming = rkisp1_stats_vb2_start_streaming, +}; + +static int rkisp1_stats_init_vb2_queue(struct vb2_queue *q, + struct rkisp1_isp_stats_vdev *stats_vdev) +{ + struct rkisp1_vdev_node *node; + + node = queue_to_node(q); + + q->type = V4L2_BUF_TYPE_META_CAPTURE; + q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF; + q->drv_priv = stats_vdev; + q->ops = &rkisp1_stats_vb2_ops; + q->mem_ops = &vb2_vmalloc_memops; + q->buf_struct_size = sizeof(struct rkisp1_buffer); + q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; + q->lock = &node->vlock; + + return vb2_queue_init(q); +} + +static void rkisp1_stats_get_awb_meas(struct rkisp1_isp_stats_vdev *stats_vdev, + struct rkisp1_stat_buffer *pbuf) +{ + /* Protect against concurrent access from ISR? */ + u32 reg_val; + + pbuf->meas_type |= CIFISP_STAT_AWB; + reg_val = readl(stats_vdev->dev->base_addr + CIF_ISP_AWB_WHITE_CNT); + pbuf->params.awb.awb_mean[0].cnt = CIF_ISP_AWB_GET_PIXEL_CNT(reg_val); + reg_val = readl(stats_vdev->dev->base_addr + CIF_ISP_AWB_MEAN); + + pbuf->params.awb.awb_mean[0].mean_cr_or_r = + CIF_ISP_AWB_GET_MEAN_CR_R(reg_val); + pbuf->params.awb.awb_mean[0].mean_cb_or_b = + CIF_ISP_AWB_GET_MEAN_CB_B(reg_val); + pbuf->params.awb.awb_mean[0].mean_y_or_g = + CIF_ISP_AWB_GET_MEAN_Y_G(reg_val); +} + +static void rkisp1_stats_get_aec_meas(struct rkisp1_isp_stats_vdev *stats_vdev, + struct rkisp1_stat_buffer *pbuf) +{ + void __iomem *addr = stats_vdev->dev->base_addr + CIF_ISP_EXP_MEAN_00; + unsigned int i; + + pbuf->meas_type |= CIFISP_STAT_AUTOEXP; + for (i = 0; i < CIFISP_AE_MEAN_MAX; i++) + pbuf->params.ae.exp_mean[i] = (u8)readl(addr + i * 4); +} + +static void rkisp1_stats_get_afc_meas(struct rkisp1_isp_stats_vdev *stats_vdev, + struct rkisp1_stat_buffer *pbuf) +{ + void __iomem *base_addr; + struct cifisp_af_stat *af; + + pbuf->meas_type = CIFISP_STAT_AFM_FIN; + + af = &pbuf->params.af; + base_addr = stats_vdev->dev->base_addr; + af->window[0].sum = readl(base_addr + CIF_ISP_AFM_SUM_A); + af->window[0].lum = readl(base_addr + CIF_ISP_AFM_LUM_A); + af->window[1].sum = readl(base_addr + CIF_ISP_AFM_SUM_B); + af->window[1].lum = readl(base_addr + CIF_ISP_AFM_LUM_B); + af->window[2].sum = readl(base_addr + CIF_ISP_AFM_SUM_C); + af->window[2].lum = readl(base_addr + CIF_ISP_AFM_LUM_C); +} + +static void rkisp1_stats_get_hst_meas(struct rkisp1_isp_stats_vdev *stats_vdev, + struct rkisp1_stat_buffer *pbuf) +{ + void __iomem *addr = stats_vdev->dev->base_addr + CIF_ISP_HIST_BIN_0; + unsigned int i; + + pbuf->meas_type |= CIFISP_STAT_HIST; + for (i = 0; i < CIFISP_HIST_BIN_N_MAX; i++) + pbuf->params.hist.hist_bins[i] = readl(addr + (i * 4)); +} + +static void rkisp1_stats_get_bls_meas(struct rkisp1_isp_stats_vdev *stats_vdev, + struct rkisp1_stat_buffer *pbuf) +{ + struct rkisp1_device *dev = stats_vdev->dev; + const struct rkisp1_fmt *in_fmt = dev->isp_sdev.in_fmt; + void __iomem *base = stats_vdev->dev->base_addr; + struct cifisp_bls_meas_val *bls_val; + + bls_val = &pbuf->params.ae.bls_val; + if (in_fmt->bayer_pat == RAW_BGGR) { + bls_val->meas_b = readl(base + CIF_ISP_BLS_A_MEASURED); + bls_val->meas_gb = readl(base + CIF_ISP_BLS_B_MEASURED); + bls_val->meas_gr = readl(base + CIF_ISP_BLS_C_MEASURED); + bls_val->meas_r = readl(base + CIF_ISP_BLS_D_MEASURED); + } else if (in_fmt->bayer_pat == RAW_GBRG) { + bls_val->meas_gb = readl(base + CIF_ISP_BLS_A_MEASURED); + bls_val->meas_b = readl(base + CIF_ISP_BLS_B_MEASURED); + bls_val->meas_r = readl(base + CIF_ISP_BLS_C_MEASURED); + bls_val->meas_gr = readl(base + CIF_ISP_BLS_D_MEASURED); + } else if (in_fmt->bayer_pat == RAW_GRBG) { + bls_val->meas_gr = readl(base + CIF_ISP_BLS_A_MEASURED); + bls_val->meas_r = readl(base + CIF_ISP_BLS_B_MEASURED); + bls_val->meas_b = readl(base + CIF_ISP_BLS_C_MEASURED); + bls_val->meas_gb = readl(base + CIF_ISP_BLS_D_MEASURED); + } else if (in_fmt->bayer_pat == RAW_RGGB) { + bls_val->meas_r = readl(base + CIF_ISP_BLS_A_MEASURED); + bls_val->meas_gr = readl(base + CIF_ISP_BLS_B_MEASURED); + bls_val->meas_gb = readl(base + CIF_ISP_BLS_C_MEASURED); + bls_val->meas_b = readl(base + CIF_ISP_BLS_D_MEASURED); + } +} + +static void +rkisp1_stats_send_measurement(struct rkisp1_isp_stats_vdev *stats_vdev, + struct rkisp1_isp_readout_work *meas_work) +{ + struct rkisp1_stat_buffer *cur_stat_buf; + struct rkisp1_buffer *cur_buf = NULL; + unsigned int cur_frame_id = -1; + u64 timestamp = ktime_get_ns(); + + cur_frame_id = atomic_read(&stats_vdev->dev->isp_sdev.frm_sync_seq) - 1; + if (cur_frame_id != meas_work->frame_id) { + dev_warn(stats_vdev->dev->dev, + "Measurement late(%d, %d)\n", + cur_frame_id, meas_work->frame_id); + cur_frame_id = meas_work->frame_id; + } + + mutex_lock(&stats_vdev->wq_lock); + /* get one empty buffer */ + if (!list_empty(&stats_vdev->stat)) { + cur_buf = list_first_entry(&stats_vdev->stat, + struct rkisp1_buffer, queue); + list_del(&cur_buf->queue); + } + mutex_unlock(&stats_vdev->wq_lock); + + if (!cur_buf) + return; + + cur_stat_buf = + (struct rkisp1_stat_buffer *)(cur_buf->vaddr[0]); + + if (meas_work->isp_ris & CIF_ISP_AWB_DONE) { + rkisp1_stats_get_awb_meas(stats_vdev, cur_stat_buf); + cur_stat_buf->meas_type |= CIFISP_STAT_AWB; + } + + if (meas_work->isp_ris & CIF_ISP_AFM_FIN) { + rkisp1_stats_get_afc_meas(stats_vdev, cur_stat_buf); + cur_stat_buf->meas_type |= CIFISP_STAT_AFM_FIN; + } + + if (meas_work->isp_ris & CIF_ISP_EXP_END) { + rkisp1_stats_get_aec_meas(stats_vdev, cur_stat_buf); + rkisp1_stats_get_bls_meas(stats_vdev, cur_stat_buf); + cur_stat_buf->meas_type |= CIFISP_STAT_AUTOEXP; + } + + if (meas_work->isp_ris & CIF_ISP_HIST_MEASURE_RDY) { + rkisp1_stats_get_hst_meas(stats_vdev, cur_stat_buf); + cur_stat_buf->meas_type |= CIFISP_STAT_HIST; + } + + vb2_set_plane_payload(&cur_buf->vb.vb2_buf, 0, + sizeof(struct rkisp1_stat_buffer)); + cur_buf->vb.sequence = cur_frame_id; + cur_buf->vb.vb2_buf.timestamp = timestamp; + vb2_buffer_done(&cur_buf->vb.vb2_buf, VB2_BUF_STATE_DONE); +} + +static void rkisp1_stats_readout_work(struct work_struct *work) +{ + struct rkisp1_isp_readout_work *readout_work = container_of(work, + struct rkisp1_isp_readout_work, + work); + struct rkisp1_isp_stats_vdev *stats_vdev = readout_work->stats_vdev; + + if (readout_work->readout == RKISP1_ISP_READOUT_MEAS) + rkisp1_stats_send_measurement(stats_vdev, readout_work); + + kfree(readout_work); +} + +int rkisp1_stats_isr(struct rkisp1_isp_stats_vdev *stats_vdev, u32 isp_ris) +{ + unsigned int cur_frame_id = + atomic_read(&stats_vdev->dev->isp_sdev.frm_sync_seq) - 1; + struct rkisp1_isp_readout_work *work; + unsigned int isp_mis_tmp = 0; + + spin_lock(&stats_vdev->irq_lock); + + writel((CIF_ISP_AWB_DONE | CIF_ISP_AFM_FIN | CIF_ISP_EXP_END | + CIF_ISP_HIST_MEASURE_RDY), + stats_vdev->dev->base_addr + CIF_ISP_ICR); + + isp_mis_tmp = readl(stats_vdev->dev->base_addr + CIF_ISP_MIS); + if (isp_mis_tmp & + (CIF_ISP_AWB_DONE | CIF_ISP_AFM_FIN | + CIF_ISP_EXP_END | CIF_ISP_HIST_MEASURE_RDY)) + dev_err(stats_vdev->dev->dev, "isp icr 3A info err: 0x%x\n", + isp_mis_tmp); + + if (!stats_vdev->streamon) + goto unlock; + if (isp_ris & (CIF_ISP_AWB_DONE | CIF_ISP_AFM_FIN | CIF_ISP_EXP_END | + CIF_ISP_HIST_MEASURE_RDY)) { + work = (struct rkisp1_isp_readout_work *) + kzalloc(sizeof(struct rkisp1_isp_readout_work), + GFP_ATOMIC); + if (work) { + INIT_WORK(&work->work, + rkisp1_stats_readout_work); + work->readout = RKISP1_ISP_READOUT_MEAS; + work->stats_vdev = stats_vdev; + work->frame_id = cur_frame_id; + work->isp_ris = isp_ris; + if (!queue_work(stats_vdev->readout_wq, + &work->work)) + kfree(work); + } else { + dev_err(stats_vdev->dev->dev, + "Could not allocate work\n"); + } + } + +unlock: + spin_unlock(&stats_vdev->irq_lock); + + return 0; +} + +static void rkisp1_init_stats_vdev(struct rkisp1_isp_stats_vdev *stats_vdev) +{ + stats_vdev->vdev_fmt.fmt.meta.dataformat = + V4L2_META_FMT_RK_ISP1_STAT_3A; + stats_vdev->vdev_fmt.fmt.meta.buffersize = + sizeof(struct rkisp1_stat_buffer); +} + +int rkisp1_register_stats_vdev(struct rkisp1_isp_stats_vdev *stats_vdev, + struct v4l2_device *v4l2_dev, + struct rkisp1_device *dev) +{ + struct rkisp1_vdev_node *node = &stats_vdev->vnode; + struct video_device *vdev = &node->vdev; + int ret; + + stats_vdev->dev = dev; + mutex_init(&stats_vdev->wq_lock); + mutex_init(&node->vlock); + INIT_LIST_HEAD(&stats_vdev->stat); + spin_lock_init(&stats_vdev->irq_lock); + + strscpy(vdev->name, "rkisp1-statistics", sizeof(vdev->name)); + + video_set_drvdata(vdev, stats_vdev); + vdev->ioctl_ops = &rkisp1_stats_ioctl; + vdev->fops = &rkisp1_stats_fops; + vdev->release = video_device_release_empty; + vdev->lock = &node->vlock; + vdev->v4l2_dev = v4l2_dev; + vdev->queue = &node->buf_queue; + vdev->device_caps = V4L2_CAP_META_CAPTURE | V4L2_CAP_STREAMING; + vdev->vfl_dir = VFL_DIR_RX; + rkisp1_stats_init_vb2_queue(vdev->queue, stats_vdev); + rkisp1_init_stats_vdev(stats_vdev); + video_set_drvdata(vdev, stats_vdev); + + node->pad.flags = MEDIA_PAD_FL_SINK; + ret = media_entity_pads_init(&vdev->entity, 1, &node->pad); + if (ret < 0) + goto err_release_queue; + + ret = video_register_device(vdev, VFL_TYPE_GRABBER, -1); + if (ret < 0) { + dev_err(&vdev->dev, + "could not register Video for Linux device\n"); + goto err_cleanup_media_entity; + } + + stats_vdev->readout_wq = alloc_workqueue("measurement_queue", + WQ_UNBOUND | WQ_MEM_RECLAIM, + 1); + + if (!stats_vdev->readout_wq) { + ret = -ENOMEM; + goto err_unreg_vdev; + } + + return 0; + +err_unreg_vdev: + video_unregister_device(vdev); +err_cleanup_media_entity: + media_entity_cleanup(&vdev->entity); +err_release_queue: + vb2_queue_release(vdev->queue); + mutex_destroy(&node->vlock); + mutex_destroy(&stats_vdev->wq_lock); + return ret; +} + +void rkisp1_unregister_stats_vdev(struct rkisp1_isp_stats_vdev *stats_vdev) +{ + struct rkisp1_vdev_node *node = &stats_vdev->vnode; + struct video_device *vdev = &node->vdev; + + destroy_workqueue(stats_vdev->readout_wq); + video_unregister_device(vdev); + media_entity_cleanup(&vdev->entity); + vb2_queue_release(vdev->queue); + mutex_destroy(&node->vlock); + mutex_destroy(&stats_vdev->wq_lock); +} diff --git a/drivers/staging/media/rkisp1/isp_stats.h b/drivers/staging/media/rkisp1/isp_stats.h new file mode 100644 index 000000000000..34e4fe8b4305 --- /dev/null +++ b/drivers/staging/media/rkisp1/isp_stats.h @@ -0,0 +1,60 @@ +/* SPDX-License-Identifier: (GPL-2.0+ OR MIT) */ +/* + * Rockchip ISP1 Driver - Stats subdevice header + * + * Copyright (C) 2017 Rockchip Electronics Co., Ltd. + */ + +#ifndef _RKISP1_ISP_STATS_H +#define _RKISP1_ISP_STATS_H + +#include "uapi/rkisp1-config.h" + +#include "common.h" + +struct rkisp1_isp_stats_vdev; + +enum rkisp1_isp_readout_cmd { + RKISP1_ISP_READOUT_MEAS, + RKISP1_ISP_READOUT_META, +}; + +struct rkisp1_isp_readout_work { + struct work_struct work; + struct rkisp1_isp_stats_vdev *stats_vdev; + + unsigned int frame_id; + unsigned int isp_ris; + enum rkisp1_isp_readout_cmd readout; + struct vb2_buffer *vb; +}; + +/* + * struct rkisp1_isp_stats_vdev - ISP Statistics device + * + * @irq_lock: buffer queue lock + * @stat: stats buffer list + * @readout_wq: workqueue for statistics information read + */ +struct rkisp1_isp_stats_vdev { + struct rkisp1_vdev_node vnode; + struct rkisp1_device *dev; + + spinlock_t irq_lock; + struct list_head stat; + struct v4l2_format vdev_fmt; + bool streamon; + + struct workqueue_struct *readout_wq; + struct mutex wq_lock; +}; + +int rkisp1_stats_isr(struct rkisp1_isp_stats_vdev *stats_vdev, u32 isp_ris); + +int rkisp1_register_stats_vdev(struct rkisp1_isp_stats_vdev *stats_vdev, + struct v4l2_device *v4l2_dev, + struct rkisp1_device *dev); + +void rkisp1_unregister_stats_vdev(struct rkisp1_isp_stats_vdev *stats_vdev); + +#endif /* _RKISP1_ISP_STATS_H */