diff options
Diffstat (limited to 'drivers/media/platform/renesas/rzg2l-cru')
4 files changed, 62 insertions, 79 deletions
diff --git a/drivers/media/platform/renesas/rzg2l-cru/rzg2l-cru.h b/drivers/media/platform/renesas/rzg2l-cru/rzg2l-cru.h index 811603f18..a5a99b004 100644 --- a/drivers/media/platform/renesas/rzg2l-cru/rzg2l-cru.h +++ b/drivers/media/platform/renesas/rzg2l-cru/rzg2l-cru.h @@ -133,9 +133,6 @@ struct rzg2l_cru_dev { struct v4l2_pix_format format; }; -void rzg2l_cru_vclk_unprepare(struct rzg2l_cru_dev *cru); -int rzg2l_cru_vclk_prepare(struct rzg2l_cru_dev *cru); - int rzg2l_cru_start_image_processing(struct rzg2l_cru_dev *cru); void rzg2l_cru_stop_image_processing(struct rzg2l_cru_dev *cru); diff --git a/drivers/media/platform/renesas/rzg2l-cru/rzg2l-csi2.c b/drivers/media/platform/renesas/rzg2l-cru/rzg2l-csi2.c index d20f4eff9..e68fcdaea 100644 --- a/drivers/media/platform/renesas/rzg2l-cru/rzg2l-csi2.c +++ b/drivers/media/platform/renesas/rzg2l-cru/rzg2l-csi2.c @@ -108,6 +108,7 @@ struct rzg2l_csi2 { struct reset_control *presetn; struct reset_control *cmn_rstb; struct clk *sysclk; + struct clk *vclk; unsigned long vclk_rate; struct v4l2_subdev subdev; @@ -361,7 +362,7 @@ static int rzg2l_csi2_dphy_setting(struct v4l2_subdev *sd, bool on) return rzg2l_csi2_dphy_disable(csi2); } -static void rzg2l_csi2_mipi_link_enable(struct rzg2l_csi2 *csi2) +static int rzg2l_csi2_mipi_link_enable(struct rzg2l_csi2 *csi2) { unsigned long vclk_rate = csi2->vclk_rate / HZ_PER_MHZ; u32 frrskw, frrclk, frrskw_coeff, frrclk_coeff; @@ -386,11 +387,15 @@ static void rzg2l_csi2_mipi_link_enable(struct rzg2l_csi2 *csi2) rzg2l_csi2_write(csi2, CSI2nDTEL, 0xf778ff0f); rzg2l_csi2_write(csi2, CSI2nDTEH, 0x00ffff1f); + clk_disable_unprepare(csi2->vclk); + /* Enable LINK reception */ rzg2l_csi2_write(csi2, CSI2nMCT3, CSI2nMCT3_RXEN); + + return clk_prepare_enable(csi2->vclk); } -static void rzg2l_csi2_mipi_link_disable(struct rzg2l_csi2 *csi2) +static int rzg2l_csi2_mipi_link_disable(struct rzg2l_csi2 *csi2) { unsigned int timeout = VSRSTS_RETRIES; @@ -409,18 +414,21 @@ static void rzg2l_csi2_mipi_link_disable(struct rzg2l_csi2 *csi2) if (!timeout) dev_err(csi2->dev, "Clearing CSI2nRTST.VSRSTS timed out\n"); + + return 0; } static int rzg2l_csi2_mipi_link_setting(struct v4l2_subdev *sd, bool on) { struct rzg2l_csi2 *csi2 = sd_to_csi2(sd); + int ret; if (on) - rzg2l_csi2_mipi_link_enable(csi2); + ret = rzg2l_csi2_mipi_link_enable(csi2); else - rzg2l_csi2_mipi_link_disable(csi2); + ret = rzg2l_csi2_mipi_link_disable(csi2); - return 0; + return ret; } static int rzg2l_csi2_s_stream(struct v4l2_subdev *sd, int enable) @@ -731,7 +739,6 @@ static const struct media_entity_operations rzg2l_csi2_entity_ops = { static int rzg2l_csi2_probe(struct platform_device *pdev) { struct rzg2l_csi2 *csi2; - struct clk *vclk; int ret; csi2 = devm_kzalloc(&pdev->dev, sizeof(*csi2), GFP_KERNEL); @@ -757,12 +764,11 @@ static int rzg2l_csi2_probe(struct platform_device *pdev) return dev_err_probe(&pdev->dev, PTR_ERR(csi2->sysclk), "Failed to get system clk\n"); - vclk = clk_get(&pdev->dev, "video"); - if (IS_ERR(vclk)) - return dev_err_probe(&pdev->dev, PTR_ERR(vclk), + csi2->vclk = devm_clk_get(&pdev->dev, "video"); + if (IS_ERR(csi2->vclk)) + return dev_err_probe(&pdev->dev, PTR_ERR(csi2->vclk), "Failed to get video clock\n"); - csi2->vclk_rate = clk_get_rate(vclk); - clk_put(vclk); + csi2->vclk_rate = clk_get_rate(csi2->vclk); csi2->dev = &pdev->dev; @@ -834,7 +840,7 @@ static void rzg2l_csi2_remove(struct platform_device *pdev) pm_runtime_disable(&pdev->dev); } -static int __maybe_unused rzg2l_csi2_pm_runtime_suspend(struct device *dev) +static int rzg2l_csi2_pm_runtime_suspend(struct device *dev) { struct rzg2l_csi2 *csi2 = dev_get_drvdata(dev); @@ -843,7 +849,7 @@ static int __maybe_unused rzg2l_csi2_pm_runtime_suspend(struct device *dev) return 0; } -static int __maybe_unused rzg2l_csi2_pm_runtime_resume(struct device *dev) +static int rzg2l_csi2_pm_runtime_resume(struct device *dev) { struct rzg2l_csi2 *csi2 = dev_get_drvdata(dev); @@ -851,7 +857,8 @@ static int __maybe_unused rzg2l_csi2_pm_runtime_resume(struct device *dev) } static const struct dev_pm_ops rzg2l_csi2_pm_ops = { - SET_RUNTIME_PM_OPS(rzg2l_csi2_pm_runtime_suspend, rzg2l_csi2_pm_runtime_resume, NULL) + RUNTIME_PM_OPS(rzg2l_csi2_pm_runtime_suspend, + rzg2l_csi2_pm_runtime_resume, NULL) }; static const struct of_device_id rzg2l_csi2_of_table[] = { @@ -865,7 +872,7 @@ static struct platform_driver rzg2l_csi2_pdrv = { .driver = { .name = "rzg2l-csi2", .of_match_table = rzg2l_csi2_of_table, - .pm = &rzg2l_csi2_pm_ops, + .pm = pm_ptr(&rzg2l_csi2_pm_ops), }, }; diff --git a/drivers/media/platform/renesas/rzg2l-cru/rzg2l-ip.c b/drivers/media/platform/renesas/rzg2l-cru/rzg2l-ip.c index 9f351a058..ac8ebae4e 100644 --- a/drivers/media/platform/renesas/rzg2l-cru/rzg2l-ip.c +++ b/drivers/media/platform/renesas/rzg2l-cru/rzg2l-ip.c @@ -5,6 +5,7 @@ * Copyright (C) 2022 Renesas Electronics Corp. */ +#include <linux/delay.h> #include "rzg2l-cru.h" struct rzg2l_cru_ip_format { @@ -71,26 +72,17 @@ static int rzg2l_cru_ip_s_stream(struct v4l2_subdev *sd, int enable) if (ret) return ret; + fsleep(1000); + ret = rzg2l_cru_start_image_processing(cru); if (ret) { v4l2_subdev_call(cru->ip.remote, video, post_streamoff); return ret; } - rzg2l_cru_vclk_unprepare(cru); - ret = v4l2_subdev_call(cru->ip.remote, video, s_stream, enable); - if (ret == -ENOIOCTLCMD) - ret = 0; - if (!ret) { - ret = rzg2l_cru_vclk_prepare(cru); - if (!ret) - return 0; - } else { - /* enable back vclk so that s_stream in error path disables it */ - if (rzg2l_cru_vclk_prepare(cru)) - dev_err(cru->dev, "Failed to enable vclk\n"); - } + if (!ret || ret == -ENOIOCTLCMD) + return 0; s_stream_ret = ret; diff --git a/drivers/media/platform/renesas/rzg2l-cru/rzg2l-video.c b/drivers/media/platform/renesas/rzg2l-cru/rzg2l-video.c index d0ffa90bc..b16b8af6e 100644 --- a/drivers/media/platform/renesas/rzg2l-cru/rzg2l-video.c +++ b/drivers/media/platform/renesas/rzg2l-cru/rzg2l-video.c @@ -430,13 +430,6 @@ int rzg2l_cru_start_image_processing(struct rzg2l_cru_dev *cru) spin_lock_irqsave(&cru->qlock, flags); - /* Initialize image convert */ - ret = rzg2l_cru_initialize_image_conv(cru, fmt); - if (ret) { - spin_unlock_irqrestore(&cru->qlock, flags); - return ret; - } - /* Select a video input */ rzg2l_cru_write(cru, CRUnCTRL, CRUnCTRL_VINSEL(0)); @@ -450,6 +443,13 @@ int rzg2l_cru_start_image_processing(struct rzg2l_cru_dev *cru) /* Initialize the AXI master */ rzg2l_cru_initialize_axi(cru); + /* Initialize image convert */ + ret = rzg2l_cru_initialize_image_conv(cru, fmt); + if (ret) { + spin_unlock_irqrestore(&cru->qlock, flags); + return ret; + } + /* Enable interrupt */ rzg2l_cru_write(cru, CRUnIE, CRUnIE_EFE); @@ -461,16 +461,6 @@ int rzg2l_cru_start_image_processing(struct rzg2l_cru_dev *cru) return 0; } -void rzg2l_cru_vclk_unprepare(struct rzg2l_cru_dev *cru) -{ - clk_disable_unprepare(cru->vclk); -} - -int rzg2l_cru_vclk_prepare(struct rzg2l_cru_dev *cru) -{ - return clk_prepare_enable(cru->vclk); -} - static int rzg2l_cru_set_stream(struct rzg2l_cru_dev *cru, int on) { struct media_pipeline *pipe; @@ -499,39 +489,24 @@ static int rzg2l_cru_set_stream(struct rzg2l_cru_dev *cru, int on) video_device_pipeline_stop(&cru->vdev); - pm_runtime_put_sync(cru->dev); - clk_disable_unprepare(cru->vclk); - return stream_off_ret; } - ret = pm_runtime_resume_and_get(cru->dev); - if (ret) - return ret; - - ret = clk_prepare_enable(cru->vclk); - if (ret) - goto err_pm_put; - ret = rzg2l_cru_mc_validate_format(cru, sd, pad); if (ret) - goto err_vclk_disable; + return ret; pipe = media_entity_pipeline(&sd->entity) ? : &cru->vdev.pipe; ret = video_device_pipeline_start(&cru->vdev, pipe); if (ret) - goto err_vclk_disable; + return ret; ret = v4l2_subdev_call(sd, video, pre_streamon, 0); - if (ret == -ENOIOCTLCMD) - ret = 0; - if (ret) + if (ret && ret != -ENOIOCTLCMD) goto pipe_line_stop; ret = v4l2_subdev_call(sd, video, s_stream, 1); - if (ret == -ENOIOCTLCMD) - ret = 0; - if (ret) + if (ret && ret != -ENOIOCTLCMD) goto err_s_stream; return 0; @@ -542,12 +517,6 @@ err_s_stream: pipe_line_stop: video_device_pipeline_stop(&cru->vdev); -err_vclk_disable: - clk_disable_unprepare(cru->vclk); - -err_pm_put: - pm_runtime_put_sync(cru->dev); - return ret; } @@ -646,25 +615,33 @@ static int rzg2l_cru_start_streaming_vq(struct vb2_queue *vq, unsigned int count struct rzg2l_cru_dev *cru = vb2_get_drv_priv(vq); int ret; + ret = pm_runtime_resume_and_get(cru->dev); + if (ret) + return ret; + + ret = clk_prepare_enable(cru->vclk); + if (ret) + goto err_pm_put; + /* Release reset state */ ret = reset_control_deassert(cru->aresetn); if (ret) { dev_err(cru->dev, "failed to deassert aresetn\n"); - return ret; + goto err_vclk_disable; } ret = reset_control_deassert(cru->presetn); if (ret) { reset_control_assert(cru->aresetn); dev_err(cru->dev, "failed to deassert presetn\n"); - return ret; + goto assert_aresetn; } ret = request_irq(cru->image_conv_irq, rzg2l_cru_irq, IRQF_SHARED, KBUILD_MODNAME, cru); if (ret) { dev_err(cru->dev, "failed to request irq\n"); - goto assert_resets; + goto assert_presetn; } /* Allocate scratch buffer. */ @@ -696,10 +673,18 @@ out: free_image_conv_irq: free_irq(cru->image_conv_irq, cru); -assert_resets: +assert_presetn: reset_control_assert(cru->presetn); + +assert_aresetn: reset_control_assert(cru->aresetn); +err_vclk_disable: + clk_disable_unprepare(cru->vclk); + +err_pm_put: + pm_runtime_put_sync(cru->dev); + return ret; } @@ -714,9 +699,11 @@ static void rzg2l_cru_stop_streaming_vq(struct vb2_queue *vq) cru->scratch, cru->scratch_phys); free_irq(cru->image_conv_irq, cru); - reset_control_assert(cru->presetn); - return_unused_buffers(cru, VB2_BUF_STATE_ERROR); + + reset_control_assert(cru->presetn); + clk_disable_unprepare(cru->vclk); + pm_runtime_put_sync(cru->dev); } static const struct vb2_ops rzg2l_cru_qops = { |