From 415cd3ac4ea04ba916a5b02f7853a504e0994757 Mon Sep 17 00:00:00 2001 From: Lubomir Rintel Date: Tue, 28 May 2019 05:07:25 -0400 Subject: [PATCH] media: Revert "[media] marvell-ccic: reset ccic phy when stop streaming for stability" This accesses the clock registers directly and thus is going to stay in the way of making the driver devicetree friendly. No boards seems to actually use this. If it's somehow actually needed it needs to be done differently. This reverts commit 7c269f454e7a51b151d94f99344120efa1cd0acb. Signed-off-by: Lubomir Rintel Signed-off-by: Sakari Ailus Signed-off-by: Mauro Carvalho Chehab --- .../media/platform/marvell-ccic/mcam-core.c | 6 ----- .../media/platform/marvell-ccic/mcam-core.h | 2 -- .../media/platform/marvell-ccic/mmp-driver.c | 25 ------------------- 3 files changed, 33 deletions(-) diff --git a/drivers/media/platform/marvell-ccic/mcam-core.c b/drivers/media/platform/marvell-ccic/mcam-core.c index 040fe9501415..2494a31de01b 100644 --- a/drivers/media/platform/marvell-ccic/mcam-core.c +++ b/drivers/media/platform/marvell-ccic/mcam-core.c @@ -1154,12 +1154,6 @@ static void mcam_vb_stop_streaming(struct vb2_queue *vq) if (cam->state != S_STREAMING) return; mcam_ctlr_stop_dma(cam); - /* - * Reset the CCIC PHY after stopping streaming, - * otherwise, the CCIC may be unstable. - */ - if (cam->ctlr_reset) - cam->ctlr_reset(cam); /* * VB2 reclaims the buffers, so we need to forget * about them. diff --git a/drivers/media/platform/marvell-ccic/mcam-core.h b/drivers/media/platform/marvell-ccic/mcam-core.h index ad8955f9f0a1..a3a097a45e78 100644 --- a/drivers/media/platform/marvell-ccic/mcam-core.h +++ b/drivers/media/platform/marvell-ccic/mcam-core.h @@ -116,7 +116,6 @@ struct mcam_camera { int mclk_src; /* which clock source the mclk derives from */ int mclk_div; /* Clock Divider Value for MCLK */ - int ccic_id; enum v4l2_mbus_type bus_type; /* MIPI support */ /* The dphy config value, allocated in board file @@ -137,7 +136,6 @@ struct mcam_camera { int (*plat_power_up) (struct mcam_camera *cam); void (*plat_power_down) (struct mcam_camera *cam); void (*calc_dphy) (struct mcam_camera *cam); - void (*ctlr_reset) (struct mcam_camera *cam); /* * Everything below here is private to the mcam core and diff --git a/drivers/media/platform/marvell-ccic/mmp-driver.c b/drivers/media/platform/marvell-ccic/mmp-driver.c index bf4d4a47f1db..9c4c7d37d0df 100644 --- a/drivers/media/platform/marvell-ccic/mmp-driver.c +++ b/drivers/media/platform/marvell-ccic/mmp-driver.c @@ -103,7 +103,6 @@ static struct mmp_camera *mmpcam_find_device(struct platform_device *pdev) #define CPU_SUBSYS_PMU_BASE 0xd4282800 #define REG_CCIC_DCGCR 0x28 /* CCIC dyn clock gate ctrl reg */ #define REG_CCIC_CRCR 0x50 /* CCIC clk reset ctrl reg */ -#define REG_CCIC2_CRCR 0xf4 /* CCIC2 clk reset ctrl reg */ static void mcam_clk_enable(struct mcam_camera *mcam) { @@ -181,28 +180,6 @@ static void mmpcam_power_down(struct mcam_camera *mcam) mcam_clk_disable(mcam); } -static void mcam_ctlr_reset(struct mcam_camera *mcam) -{ - unsigned long val; - struct mmp_camera *cam = mcam_to_cam(mcam); - - if (mcam->ccic_id) { - /* - * Using CCIC2 - */ - val = ioread32(cam->power_regs + REG_CCIC2_CRCR); - iowrite32(val & ~0x2, cam->power_regs + REG_CCIC2_CRCR); - iowrite32(val | 0x2, cam->power_regs + REG_CCIC2_CRCR); - } else { - /* - * Using CCIC1 - */ - val = ioread32(cam->power_regs + REG_CCIC_CRCR); - iowrite32(val & ~0x2, cam->power_regs + REG_CCIC_CRCR); - iowrite32(val | 0x2, cam->power_regs + REG_CCIC_CRCR); - } -} - /* * calc the dphy register values * There are three dphy registers being used. @@ -350,11 +327,9 @@ static int mmpcam_probe(struct platform_device *pdev) mcam = &cam->mcam; mcam->plat_power_up = mmpcam_power_up; mcam->plat_power_down = mmpcam_power_down; - mcam->ctlr_reset = mcam_ctlr_reset; mcam->calc_dphy = mmpcam_calc_dphy; mcam->dev = &pdev->dev; mcam->use_smbus = 0; - mcam->ccic_id = pdev->id; mcam->mclk_min = pdata->mclk_min; mcam->mclk_src = pdata->mclk_src; mcam->mclk_div = pdata->mclk_div; -- 2.30.2