From: Lubomir Rintel <lkundrak@v3.sk>
To: Mauro Carvalho Chehab <mchehab@kernel.org>,
Jonathan Corbet <corbet@lwn.net>,
linux-media@vger.kernel.org
Cc: Rob Herring <robh+dt@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
Lubomir Rintel <lkundrak@v3.sk>, James Cameron <quozl@laptop.org>,
Pavel Machek <pavel@ucw.cz>, Libin Yang <lbyang@marvell.com>,
Albert Wang <twang13@marvell.com>
Subject: [PATCH v2 06/11] Revert "[media] marvell-ccic: reset ccic phy when stop streaming for stability"
Date: Mon, 12 Nov 2018 01:35:15 +0100 [thread overview]
Message-ID: <20181112003520.577592-7-lkundrak@v3.sk> (raw)
In-Reply-To: <20181112003520.577592-1-lkundrak@v3.sk>
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.
---
.../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 d24e5b7a3bc5..1b879035948c 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 70a2833db0d1..dbfc597b955d 100644
--- a/drivers/media/platform/marvell-ccic/mmp-driver.c
+++ b/drivers/media/platform/marvell-ccic/mmp-driver.c
@@ -105,7 +105,6 @@ 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)
{
@@ -183,28 +182,6 @@ 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.
@@ -352,11 +329,9 @@ 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;
--
2.19.1
next prev parent reply other threads:[~2018-11-12 0:36 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-12 0:35 [PATCH v2 0/11] media: make Marvell camera work on DT-based OLPC XO-1.75 Lubomir Rintel
2018-11-12 0:35 ` [PATCH v2 01/11] media: ov7670: hook s_power onto v4l2 core Lubomir Rintel
2018-11-12 0:35 ` [PATCH v2 02/11] media: ov7670: control clock along with power Lubomir Rintel
2018-11-14 14:35 ` Hans Verkuil
2018-11-12 0:35 ` [PATCH v2 03/11] media: dt-bindings: marvell,mmp2-ccic: Add Marvell MMP2 camera Lubomir Rintel
2018-11-17 15:39 ` Rob Herring
2018-11-12 0:35 ` [PATCH v2 04/11] [media] marvell-ccic: fix DMA s/g desc number calculation Lubomir Rintel
2018-11-12 0:35 ` [PATCH v2 05/11] [media] marvell-ccic: don't generate EOF on parallel bus Lubomir Rintel
2018-11-12 0:35 ` Lubomir Rintel [this message]
2018-11-12 0:35 ` [PATCH v2 07/11] [media] marvell-ccic: drop unused stuff Lubomir Rintel
2018-11-12 0:35 ` [PATCH v2 08/11] [media] marvell-ccic/mmp: enable clock before accessing registers Lubomir Rintel
2018-11-12 0:35 ` [PATCH v2 09/11] [media] marvell-ccic/mmp: add devicetree support Lubomir Rintel
2018-11-12 0:35 ` [PATCH v2 10/11] [media] marvell-ccic: use async notifier to get the sensor Lubomir Rintel
2018-11-12 22:06 ` kbuild test robot
2018-11-12 0:35 ` [PATCH v2 11/11] [media] marvell-ccic: provide a clock for " Lubomir Rintel
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