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Message-ID: <63fd1382-6b50-3594-69fc-0da4ef006ebc@linaro.org>
Date: Thu, 18 Feb 2021 22:49:20 +0300
From: Andrey Konovalov <andrey.konovalov@...aro.org>
To: Robert Foss <robert.foss@...aro.org>, agross@...nel.org,
bjorn.andersson@...aro.org, todor.too@...il.com,
mchehab@...nel.org, robh+dt@...nel.org,
angelogioacchino.delregno@...ainline.org,
linux-arm-msm@...r.kernel.org, linux-media@...r.kernel.org,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
AngeloGioacchino Del Regno <kholk11@...il.com>,
Sakari Ailus <sakari.ailus@....fi>,
Nicolas Boichat <drinkcat@...omium.org>
Cc: Rob Herring <robh@...nel.org>, Tomasz Figa <tfiga@...omium.org>,
Azam Sadiq Pasha Kapatrala Syed <akapatra@...cinc.com>,
Sarvesh Sridutt <Sarvesh.Sridutt@...rtwirelesscompute.com>,
Laurent Pinchart <laurent.pinchart@...asonboard.com>,
Jonathan Marek <jonathan@...ek.ca>
Subject: Re: [PATCH v5 05/22] media: camss: Make ISPIF subdevice optional
Hi Robert,
On 17.02.2021 14:21, Robert Foss wrote:
> This driver supports multiple architecture versions of the Qualcomm ISP.
> The CAMSS architecure which this driver is name after, and with the
> introduction of this series, the Titan architecture.
>
> The ISPIF is an IP-block that is only present in the CAMSS generation of
> the architecture. In order to support the Titan generation, make the
> ISPIF an optional subdevice.
>
> Signed-off-by: Robert Foss <robert.foss@...aro.org>
Reviewed-by: Andrey Konovalov <andrey.konovalov@...aro.org>
Thanks,
Andrey
> ---
>
>
> Changes since v1:
> - Björn: Improved commit message
> - Björn: Use local 'dev' ptr instead of 'camss->dev'
> - Björn: Remove res/ispif NULL checks
> - Björn: Remove ispif NULL checks before calling
> msm_ispif_unregister_entities()
> - Andrey: Fixed incorrect allocation size
>
> Changes since v4:
> - Andrey: Remove !camss->ispif conditional from camss.c
> - Andrey: Fix !camss->ispif in camss-ispif.c
> - Move !camss->ispif check to msm_ispif_subdev_init()
>
>
> .../media/platform/qcom/camss/camss-ispif.c | 119 +++++++++++-------
> .../media/platform/qcom/camss/camss-ispif.h | 3 +-
> drivers/media/platform/qcom/camss/camss.c | 99 ++++++++++-----
> drivers/media/platform/qcom/camss/camss.h | 2 +-
> 4 files changed, 139 insertions(+), 84 deletions(-)
>
> diff --git a/drivers/media/platform/qcom/camss/camss-ispif.c b/drivers/media/platform/qcom/camss/camss-ispif.c
> index adeb92808998..fc121da4ab0c 100644
> --- a/drivers/media/platform/qcom/camss/camss-ispif.c
> +++ b/drivers/media/platform/qcom/camss/camss-ispif.c
> @@ -161,6 +161,7 @@ static const u32 ispif_formats_8x96[] = {
> static irqreturn_t ispif_isr_8x96(int irq, void *dev)
> {
> struct ispif_device *ispif = dev;
> + struct camss *camss = ispif->camss;
> u32 value0, value1, value2, value3, value4, value5;
>
> value0 = readl_relaxed(ispif->base + ISPIF_VFE_m_IRQ_STATUS_0(0));
> @@ -186,34 +187,34 @@ static irqreturn_t ispif_isr_8x96(int irq, void *dev)
> complete(&ispif->reset_complete[1]);
>
> if (unlikely(value0 & ISPIF_VFE_m_IRQ_STATUS_0_PIX0_OVERFLOW))
> - dev_err_ratelimited(to_device(ispif), "VFE0 pix0 overflow\n");
> + dev_err_ratelimited(camss->dev, "VFE0 pix0 overflow\n");
>
> if (unlikely(value0 & ISPIF_VFE_m_IRQ_STATUS_0_RDI0_OVERFLOW))
> - dev_err_ratelimited(to_device(ispif), "VFE0 rdi0 overflow\n");
> + dev_err_ratelimited(camss->dev, "VFE0 rdi0 overflow\n");
>
> if (unlikely(value1 & ISPIF_VFE_m_IRQ_STATUS_1_PIX1_OVERFLOW))
> - dev_err_ratelimited(to_device(ispif), "VFE0 pix1 overflow\n");
> + dev_err_ratelimited(camss->dev, "VFE0 pix1 overflow\n");
>
> if (unlikely(value1 & ISPIF_VFE_m_IRQ_STATUS_1_RDI1_OVERFLOW))
> - dev_err_ratelimited(to_device(ispif), "VFE0 rdi1 overflow\n");
> + dev_err_ratelimited(camss->dev, "VFE0 rdi1 overflow\n");
>
> if (unlikely(value2 & ISPIF_VFE_m_IRQ_STATUS_2_RDI2_OVERFLOW))
> - dev_err_ratelimited(to_device(ispif), "VFE0 rdi2 overflow\n");
> + dev_err_ratelimited(camss->dev, "VFE0 rdi2 overflow\n");
>
> if (unlikely(value3 & ISPIF_VFE_m_IRQ_STATUS_0_PIX0_OVERFLOW))
> - dev_err_ratelimited(to_device(ispif), "VFE1 pix0 overflow\n");
> + dev_err_ratelimited(camss->dev, "VFE1 pix0 overflow\n");
>
> if (unlikely(value3 & ISPIF_VFE_m_IRQ_STATUS_0_RDI0_OVERFLOW))
> - dev_err_ratelimited(to_device(ispif), "VFE1 rdi0 overflow\n");
> + dev_err_ratelimited(camss->dev, "VFE1 rdi0 overflow\n");
>
> if (unlikely(value4 & ISPIF_VFE_m_IRQ_STATUS_1_PIX1_OVERFLOW))
> - dev_err_ratelimited(to_device(ispif), "VFE1 pix1 overflow\n");
> + dev_err_ratelimited(camss->dev, "VFE1 pix1 overflow\n");
>
> if (unlikely(value4 & ISPIF_VFE_m_IRQ_STATUS_1_RDI1_OVERFLOW))
> - dev_err_ratelimited(to_device(ispif), "VFE1 rdi1 overflow\n");
> + dev_err_ratelimited(camss->dev, "VFE1 rdi1 overflow\n");
>
> if (unlikely(value5 & ISPIF_VFE_m_IRQ_STATUS_2_RDI2_OVERFLOW))
> - dev_err_ratelimited(to_device(ispif), "VFE1 rdi2 overflow\n");
> + dev_err_ratelimited(camss->dev, "VFE1 rdi2 overflow\n");
>
> return IRQ_HANDLED;
> }
> @@ -228,6 +229,7 @@ static irqreturn_t ispif_isr_8x96(int irq, void *dev)
> static irqreturn_t ispif_isr_8x16(int irq, void *dev)
> {
> struct ispif_device *ispif = dev;
> + struct camss *camss = ispif->camss;
> u32 value0, value1, value2;
>
> value0 = readl_relaxed(ispif->base + ISPIF_VFE_m_IRQ_STATUS_0(0));
> @@ -244,30 +246,32 @@ static irqreturn_t ispif_isr_8x16(int irq, void *dev)
> complete(&ispif->reset_complete[0]);
>
> if (unlikely(value0 & ISPIF_VFE_m_IRQ_STATUS_0_PIX0_OVERFLOW))
> - dev_err_ratelimited(to_device(ispif), "VFE0 pix0 overflow\n");
> + dev_err_ratelimited(camss->dev, "VFE0 pix0 overflow\n");
>
> if (unlikely(value0 & ISPIF_VFE_m_IRQ_STATUS_0_RDI0_OVERFLOW))
> - dev_err_ratelimited(to_device(ispif), "VFE0 rdi0 overflow\n");
> + dev_err_ratelimited(camss->dev, "VFE0 rdi0 overflow\n");
>
> if (unlikely(value1 & ISPIF_VFE_m_IRQ_STATUS_1_PIX1_OVERFLOW))
> - dev_err_ratelimited(to_device(ispif), "VFE0 pix1 overflow\n");
> + dev_err_ratelimited(camss->dev, "VFE0 pix1 overflow\n");
>
> if (unlikely(value1 & ISPIF_VFE_m_IRQ_STATUS_1_RDI1_OVERFLOW))
> - dev_err_ratelimited(to_device(ispif), "VFE0 rdi1 overflow\n");
> + dev_err_ratelimited(camss->dev, "VFE0 rdi1 overflow\n");
>
> if (unlikely(value2 & ISPIF_VFE_m_IRQ_STATUS_2_RDI2_OVERFLOW))
> - dev_err_ratelimited(to_device(ispif), "VFE0 rdi2 overflow\n");
> + dev_err_ratelimited(camss->dev, "VFE0 rdi2 overflow\n");
>
> return IRQ_HANDLED;
> }
>
> static int ispif_vfe_reset(struct ispif_device *ispif, u8 vfe_id)
> {
> + struct camss *camss = ispif->camss;
> +
> unsigned long time;
> u32 val;
>
> - if (vfe_id > (to_camss(ispif)->vfe_num - 1)) {
> - dev_err(to_device(ispif),
> + if (vfe_id > (camss->vfe_num - 1)) {
> + dev_err(camss->dev,
> "Error: asked reset for invalid VFE%d\n", vfe_id);
> return -ENOENT;
> }
> @@ -300,7 +304,7 @@ static int ispif_vfe_reset(struct ispif_device *ispif, u8 vfe_id)
> time = wait_for_completion_timeout(&ispif->reset_complete[vfe_id],
> msecs_to_jiffies(ISPIF_RESET_TIMEOUT_MS));
> if (!time) {
> - dev_err(to_device(ispif),
> + dev_err(camss->dev,
> "ISPIF for VFE%d reset timeout\n", vfe_id);
> return -EIO;
> }
> @@ -316,30 +320,31 @@ static int ispif_vfe_reset(struct ispif_device *ispif, u8 vfe_id)
> */
> static int ispif_reset(struct ispif_device *ispif, u8 vfe_id)
> {
> + struct camss *camss = ispif->camss;
> int ret;
>
> - ret = camss_pm_domain_on(to_camss(ispif), PM_DOMAIN_VFE0);
> + ret = camss_pm_domain_on(camss, PM_DOMAIN_VFE0);
> if (ret < 0)
> return ret;
>
> - ret = camss_pm_domain_on(to_camss(ispif), PM_DOMAIN_VFE1);
> + ret = camss_pm_domain_on(camss, PM_DOMAIN_VFE1);
> if (ret < 0)
> return ret;
>
> ret = camss_enable_clocks(ispif->nclocks_for_reset,
> ispif->clock_for_reset,
> - to_device(ispif));
> + camss->dev);
> if (ret < 0)
> return ret;
>
> ret = ispif_vfe_reset(ispif, vfe_id);
> if (ret)
> - dev_dbg(to_device(ispif), "ISPIF Reset failed\n");
> + dev_dbg(camss->dev, "ISPIF Reset failed\n");
>
> camss_disable_clocks(ispif->nclocks_for_reset, ispif->clock_for_reset);
>
> - camss_pm_domain_off(to_camss(ispif), PM_DOMAIN_VFE0);
> - camss_pm_domain_off(to_camss(ispif), PM_DOMAIN_VFE1);
> + camss_pm_domain_off(camss, PM_DOMAIN_VFE0);
> + camss_pm_domain_off(camss, PM_DOMAIN_VFE1);
>
> return ret;
> }
> @@ -355,7 +360,7 @@ static int ispif_set_power(struct v4l2_subdev *sd, int on)
> {
> struct ispif_line *line = v4l2_get_subdevdata(sd);
> struct ispif_device *ispif = line->ispif;
> - struct device *dev = to_device(ispif);
> + struct device *dev = ispif->camss->dev;
> int ret = 0;
>
> mutex_lock(&ispif->power_lock);
> @@ -505,7 +510,7 @@ static int ispif_validate_intf_status(struct ispif_device *ispif,
> }
>
> if ((val & 0xf) != 0xf) {
> - dev_err(to_device(ispif), "%s: ispif is busy: 0x%x\n",
> + dev_err(ispif->camss->dev, "%s: ispif is busy: 0x%x\n",
> __func__, val);
> ret = -EBUSY;
> }
> @@ -552,7 +557,7 @@ static int ispif_wait_for_stop(struct ispif_device *ispif,
> ISPIF_TIMEOUT_SLEEP_US,
> ISPIF_TIMEOUT_ALL_US);
> if (ret < 0)
> - dev_err(to_device(ispif), "%s: ispif stop timeout\n",
> + dev_err(ispif->camss->dev, "%s: ispif stop timeout\n",
> __func__);
>
> return ret;
> @@ -800,6 +805,7 @@ static int ispif_set_stream(struct v4l2_subdev *sd, int enable)
> {
> struct ispif_line *line = v4l2_get_subdevdata(sd);
> struct ispif_device *ispif = line->ispif;
> + struct camss *camss = ispif->camss;
> enum ispif_intf intf = line->interface;
> u8 csid = line->csid_id;
> u8 vfe = line->vfe_id;
> @@ -825,8 +831,8 @@ static int ispif_set_stream(struct v4l2_subdev *sd, int enable)
> ispif_select_csid(ispif, intf, csid, vfe, 1);
> ispif_select_cid(ispif, intf, cid, vfe, 1);
> ispif_config_irq(ispif, intf, vfe, 1);
> - if (to_camss(ispif)->version == CAMSS_8x96 ||
> - to_camss(ispif)->version == CAMSS_660)
> + if (camss->version == CAMSS_8x96 ||
> + camss->version == CAMSS_660)
> ispif_config_pack(ispif,
> line->fmt[MSM_ISPIF_PAD_SINK].code,
> intf, cid, vfe, 1);
> @@ -843,8 +849,8 @@ static int ispif_set_stream(struct v4l2_subdev *sd, int enable)
> return ret;
>
> mutex_lock(&ispif->config_lock);
> - if (to_camss(ispif)->version == CAMSS_8x96 ||
> - to_camss(ispif)->version == CAMSS_660)
> + if (camss->version == CAMSS_8x96 ||
> + camss->version == CAMSS_660)
> ispif_config_pack(ispif,
> line->fmt[MSM_ISPIF_PAD_SINK].code,
> intf, cid, vfe, 0);
> @@ -1088,26 +1094,32 @@ static int ispif_init_formats(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
> *
> * Return 0 on success or a negative error code otherwise
> */
> -int msm_ispif_subdev_init(struct ispif_device *ispif,
> +int msm_ispif_subdev_init(struct camss *camss,
> const struct resources_ispif *res)
> {
> - struct device *dev = to_device(ispif);
> + struct device *dev = camss->dev;
> + struct ispif_device *ispif = camss->ispif;
> struct platform_device *pdev = to_platform_device(dev);
> struct resource *r;
> int i;
> int ret;
>
> + if (!camss->ispif)
> + return 0;
> +
> + ispif->camss = camss;
> +
> /* Number of ISPIF lines - same as number of CSID hardware modules */
> - if (to_camss(ispif)->version == CAMSS_8x16)
> + if (camss->version == CAMSS_8x16)
> ispif->line_num = 2;
> - else if (to_camss(ispif)->version == CAMSS_8x96 ||
> - to_camss(ispif)->version == CAMSS_660)
> + else if (camss->version == CAMSS_8x96 ||
> + camss->version == CAMSS_660)
> ispif->line_num = 4;
> else
> return -EINVAL;
>
> - ispif->line = devm_kcalloc(dev, ispif->line_num, sizeof(*ispif->line),
> - GFP_KERNEL);
> + ispif->line = devm_kcalloc(dev, ispif->line_num,
> + sizeof(*ispif->line), GFP_KERNEL);
> if (!ispif->line)
> return -ENOMEM;
>
> @@ -1115,12 +1127,12 @@ int msm_ispif_subdev_init(struct ispif_device *ispif,
> ispif->line[i].ispif = ispif;
> ispif->line[i].id = i;
>
> - if (to_camss(ispif)->version == CAMSS_8x16) {
> + if (camss->version == CAMSS_8x16) {
> ispif->line[i].formats = ispif_formats_8x16;
> ispif->line[i].nformats =
> ARRAY_SIZE(ispif_formats_8x16);
> - } else if (to_camss(ispif)->version == CAMSS_8x96 ||
> - to_camss(ispif)->version == CAMSS_660) {
> + } else if (camss->version == CAMSS_8x96 ||
> + camss->version == CAMSS_660) {
> ispif->line[i].formats = ispif_formats_8x96;
> ispif->line[i].nformats =
> ARRAY_SIZE(ispif_formats_8x96);
> @@ -1157,15 +1169,16 @@ int msm_ispif_subdev_init(struct ispif_device *ispif,
> ispif->irq = r->start;
> snprintf(ispif->irq_name, sizeof(ispif->irq_name), "%s_%s",
> dev_name(dev), MSM_ISPIF_NAME);
> - if (to_camss(ispif)->version == CAMSS_8x16)
> + if (camss->version == CAMSS_8x16)
> ret = devm_request_irq(dev, ispif->irq, ispif_isr_8x16,
> IRQF_TRIGGER_RISING, ispif->irq_name, ispif);
> - else if (to_camss(ispif)->version == CAMSS_8x96 ||
> - to_camss(ispif)->version == CAMSS_660)
> + else if (camss->version == CAMSS_8x96 ||
> + camss->version == CAMSS_660)
> ret = devm_request_irq(dev, ispif->irq, ispif_isr_8x96,
> IRQF_TRIGGER_RISING, ispif->irq_name, ispif);
> else
> ret = -EINVAL;
> +
> if (ret < 0) {
> dev_err(dev, "request_irq failed: %d\n", ret);
> return ret;
> @@ -1331,10 +1344,15 @@ static const struct media_entity_operations ispif_media_ops = {
> int msm_ispif_register_entities(struct ispif_device *ispif,
> struct v4l2_device *v4l2_dev)
> {
> - struct device *dev = to_device(ispif);
> + struct camss *camss;
> int ret;
> int i;
>
> + if (!ispif)
> + return 0;
> +
> + camss = ispif->camss;
> +
> for (i = 0; i < ispif->line_num; i++) {
> struct v4l2_subdev *sd = &ispif->line[i].subdev;
> struct media_pad *pads = ispif->line[i].pads;
> @@ -1348,7 +1366,7 @@ int msm_ispif_register_entities(struct ispif_device *ispif,
>
> ret = ispif_init_formats(sd, NULL);
> if (ret < 0) {
> - dev_err(dev, "Failed to init format: %d\n", ret);
> + dev_err(camss->dev, "Failed to init format: %d\n", ret);
> goto error;
> }
>
> @@ -1360,13 +1378,15 @@ int msm_ispif_register_entities(struct ispif_device *ispif,
> ret = media_entity_pads_init(&sd->entity, MSM_ISPIF_PADS_NUM,
> pads);
> if (ret < 0) {
> - dev_err(dev, "Failed to init media entity: %d\n", ret);
> + dev_err(camss->dev, "Failed to init media entity: %d\n",
> + ret);
> goto error;
> }
>
> ret = v4l2_device_register_subdev(v4l2_dev, sd);
> if (ret < 0) {
> - dev_err(dev, "Failed to register subdev: %d\n", ret);
> + dev_err(camss->dev, "Failed to register subdev: %d\n",
> + ret);
> media_entity_cleanup(&sd->entity);
> goto error;
> }
> @@ -1393,6 +1413,9 @@ void msm_ispif_unregister_entities(struct ispif_device *ispif)
> {
> int i;
>
> + if (!ispif)
> + return;
> +
> mutex_destroy(&ispif->power_lock);
> mutex_destroy(&ispif->config_lock);
>
> diff --git a/drivers/media/platform/qcom/camss/camss-ispif.h b/drivers/media/platform/qcom/camss/camss-ispif.h
> index 4132174f7ea1..fdf28e68cc7d 100644
> --- a/drivers/media/platform/qcom/camss/camss-ispif.h
> +++ b/drivers/media/platform/qcom/camss/camss-ispif.h
> @@ -63,11 +63,12 @@ struct ispif_device {
> struct mutex config_lock;
> unsigned int line_num;
> struct ispif_line *line;
> + struct camss *camss;
> };
>
> struct resources_ispif;
>
> -int msm_ispif_subdev_init(struct ispif_device *ispif,
> +int msm_ispif_subdev_init(struct camss *camss,
> const struct resources_ispif *res);
>
> int msm_ispif_register_entities(struct ispif_device *ispif,
> diff --git a/drivers/media/platform/qcom/camss/camss.c b/drivers/media/platform/qcom/camss/camss.c
> index 7c0f669f8aa6..5ac2dfc67c8b 100644
> --- a/drivers/media/platform/qcom/camss/camss.c
> +++ b/drivers/media/platform/qcom/camss/camss.c
> @@ -745,10 +745,10 @@ static int camss_init_subdevices(struct camss *camss)
> }
> }
>
> - ret = msm_ispif_subdev_init(&camss->ispif, ispif_res);
> + ret = msm_ispif_subdev_init(camss, ispif_res);
> if (ret < 0) {
> dev_err(camss->dev, "Failed to init ispif sub-device: %d\n",
> - ret);
> + ret);
> return ret;
> }
>
> @@ -798,10 +798,11 @@ static int camss_register_entities(struct camss *camss)
> }
> }
>
> - ret = msm_ispif_register_entities(&camss->ispif, &camss->v4l2_dev);
> + ret = msm_ispif_register_entities(camss->ispif,
> + &camss->v4l2_dev);
> if (ret < 0) {
> dev_err(camss->dev, "Failed to register ispif entities: %d\n",
> - ret);
> + ret);
> goto err_reg_ispif;
> }
>
> @@ -835,43 +836,64 @@ static int camss_register_entities(struct camss *camss)
> }
> }
>
> - for (i = 0; i < camss->csid_num; i++) {
> - for (j = 0; j < camss->ispif.line_num; j++) {
> - ret = media_create_pad_link(
> - &camss->csid[i].subdev.entity,
> - MSM_CSID_PAD_SRC,
> - &camss->ispif.line[j].subdev.entity,
> - MSM_ISPIF_PAD_SINK,
> - 0);
> - if (ret < 0) {
> - dev_err(camss->dev,
> - "Failed to link %s->%s entities: %d\n",
> - camss->csid[i].subdev.entity.name,
> - camss->ispif.line[j].subdev.entity.name,
> - ret);
> - goto err_link;
> - }
> - }
> - }
> -
> - for (i = 0; i < camss->ispif.line_num; i++)
> - for (k = 0; k < camss->vfe_num; k++)
> - for (j = 0; j < ARRAY_SIZE(camss->vfe[k].line); j++) {
> + if (camss->ispif) {
> + for (i = 0; i < camss->csid_num; i++) {
> + for (j = 0; j < camss->ispif->line_num; j++) {
> ret = media_create_pad_link(
> - &camss->ispif.line[i].subdev.entity,
> - MSM_ISPIF_PAD_SRC,
> - &camss->vfe[k].line[j].subdev.entity,
> - MSM_VFE_PAD_SINK,
> + &camss->csid[i].subdev.entity,
> + MSM_CSID_PAD_SRC,
> + &camss->ispif->line[j].subdev.entity,
> + MSM_ISPIF_PAD_SINK,
> 0);
> if (ret < 0) {
> dev_err(camss->dev,
> "Failed to link %s->%s entities: %d\n",
> - camss->ispif.line[i].subdev.entity.name,
> - camss->vfe[k].line[j].subdev.entity.name,
> + camss->csid[i].subdev.entity.name,
> + camss->ispif->line[j].subdev.entity.name,
> ret);
> goto err_link;
> }
> }
> + }
> +
> + for (i = 0; i < camss->ispif->line_num; i++)
> + for (k = 0; k < camss->vfe_num; k++)
> + for (j = 0; j < ARRAY_SIZE(camss->vfe[k].line); j++) {
> + ret = media_create_pad_link(
> + &camss->ispif->line[i].subdev.entity,
> + MSM_ISPIF_PAD_SRC,
> + &camss->vfe[k].line[j].subdev.entity,
> + MSM_VFE_PAD_SINK,
> + 0);
> + if (ret < 0) {
> + dev_err(camss->dev,
> + "Failed to link %s->%s entities: %d\n",
> + camss->ispif->line[i].subdev.entity.name,
> + camss->vfe[k].line[j].subdev.entity.name,
> + ret);
> + goto err_link;
> + }
> + }
> + } else {
> + for (i = 0; i < camss->csid_num; i++)
> + for (k = 0; k < camss->vfe_num; k++)
> + for (j = 0; j < ARRAY_SIZE(camss->vfe[k].line); j++) {
> + ret = media_create_pad_link(
> + &camss->csid[i].subdev.entity,
> + MSM_CSID_PAD_SRC,
> + &camss->vfe[k].line[j].subdev.entity,
> + MSM_VFE_PAD_SINK,
> + 0);
> + if (ret < 0) {
> + dev_err(camss->dev,
> + "Failed to link %s->%s entities: %d\n",
> + camss->csid[i].subdev.entity.name,
> + camss->vfe[k].line[j].subdev.entity.name,
> + ret);
> + goto err_link;
> + }
> + }
> + }
>
> return 0;
>
> @@ -881,8 +903,8 @@ static int camss_register_entities(struct camss *camss)
> for (i--; i >= 0; i--)
> msm_vfe_unregister_entities(&camss->vfe[i]);
>
> - msm_ispif_unregister_entities(&camss->ispif);
> err_reg_ispif:
> + msm_ispif_unregister_entities(camss->ispif);
>
> i = camss->csid_num;
> err_reg_csid:
> @@ -913,7 +935,7 @@ static void camss_unregister_entities(struct camss *camss)
> for (i = 0; i < camss->csid_num; i++)
> msm_csid_unregister_entity(&camss->csid[i]);
>
> - msm_ispif_unregister_entities(&camss->ispif);
> + msm_ispif_unregister_entities(camss->ispif);
>
> for (i = 0; i < camss->vfe_num; i++)
> msm_vfe_unregister_entities(&camss->vfe[i]);
> @@ -1044,6 +1066,15 @@ static int camss_probe(struct platform_device *pdev)
> goto err_free;
> }
>
> + if (camss->version == CAMSS_8x16 ||
> + camss->version == CAMSS_8x96) {
> + camss->ispif = devm_kcalloc(dev, 1, sizeof(*camss->ispif), GFP_KERNEL);
> + if (!camss->ispif) {
> + ret = -ENOMEM;
> + goto err_free;
> + }
> + }
> +
> camss->vfe = devm_kcalloc(dev, camss->vfe_num, sizeof(*camss->vfe),
> GFP_KERNEL);
> if (!camss->vfe) {
> diff --git a/drivers/media/platform/qcom/camss/camss.h b/drivers/media/platform/qcom/camss/camss.h
> index 46e986452824..b7ad8e9f68a8 100644
> --- a/drivers/media/platform/qcom/camss/camss.h
> +++ b/drivers/media/platform/qcom/camss/camss.h
> @@ -79,7 +79,7 @@ struct camss {
> struct csiphy_device *csiphy;
> int csid_num;
> struct csid_device *csid;
> - struct ispif_device ispif;
> + struct ispif_device *ispif;
> int vfe_num;
> struct vfe_device *vfe;
> atomic_t ref_count;
>
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