linux-kernel - [PATCH 2/2] media: davinci: vpbe: venc: move the enabling of vpss clocks to driver

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Message-Id: <1363938793-22246-3-git-send-email-prabhakar.csengg@gmail.com>
Date:	Fri, 22 Mar 2013 13:23:13 +0530
From:	Prabhakar lad <prabhakar.csengg@...il.com>
To:	LMML <linux-media@...r.kernel.org>,
	DLOS <davinci-linux-open-source@...ux.davincidsp.com>,
	LAK <linux-arm-kernel@...ts.infradead.org>,
	Sekhar Nori <nsekhar@...com>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Mauro Carvalho Chehab <mchehab@...hat.com>,
	"Lad, Prabhakar" <prabhakar.csengg@...il.com>
Subject: [PATCH 2/2] media: davinci: vpbe: venc: move the enabling of vpss clocks to driver

From: Lad, Prabhakar <prabhakar.csengg@...il.com>

The vpss clocks were enabled by calling a exported function from a driver
in a machine code. calling driver code from platform code is incorrect way.

This patch fixes this issue and calls the function from driver code itself.

Signed-off-by: Lad, Prabhakar <prabhakar.csengg@...il.com>
---
 Note: This patch is based on the comment from Sekhar
      (https://patchwork-mail1.kernel.org/patch/2278441/).
      Shekar I haven't completely removed the callback, I just added
      the function calls after the callback. As you mentioned just to
      pass the VPSS_CLK_CTRL as a resource to venc but the VPSS_CLK_CTRL
      is already being used by VPSS driver. I'll take this cleanup task later
      point of time.

 drivers/media/platform/davinci/vpbe_venc.c |   26 ++++++++++++++++++++++++++
 1 files changed, 26 insertions(+), 0 deletions(-)

diff --git a/drivers/media/platform/davinci/vpbe_venc.c b/drivers/media/platform/davinci/vpbe_venc.c
index f15f211..26bdf9b 100644
--- a/drivers/media/platform/davinci/vpbe_venc.c
+++ b/drivers/media/platform/davinci/vpbe_venc.c
@@ -202,6 +202,26 @@ static void venc_enabledigitaloutput(struct v4l2_subdev *sd, int benable)
 	}
 }
 
+static void
+venc_enable_vpss_clock(int venc_type,
+		       enum vpbe_enc_timings_type type,
+		       unsigned int pclock)
+{
+	if (venc_type == VPBE_VERSION_1)
+		return;
+
+	if (venc_type == VPBE_VERSION_2 && (type == VPBE_ENC_STD ||
+	    (type == VPBE_ENC_DV_TIMINGS && pclock <= 27000000))) {
+		vpss_enable_clock(VPSS_VENC_CLOCK_SEL, 1);
+		vpss_enable_clock(VPSS_VPBE_CLOCK, 1);
+		return;
+	}
+
+	if (venc_type == VPBE_VERSION_3 && type == VPBE_ENC_STD)
+		vpss_enable_clock(VPSS_VENC_CLOCK_SEL, 0);
+
+}
+
 #define VDAC_CONFIG_SD_V3	0x0E21A6B6
 #define VDAC_CONFIG_SD_V2	0x081141CF
 /*
@@ -220,6 +240,7 @@ static int venc_set_ntsc(struct v4l2_subdev *sd)
 	if (pdata->setup_clock(VPBE_ENC_STD, V4L2_STD_525_60) < 0)
 		return -EINVAL;
 
+	venc_enable_vpss_clock(venc->venc_type, VPBE_ENC_STD, V4L2_STD_525_60);
 	venc_enabledigitaloutput(sd, 0);
 
 	if (venc->venc_type == VPBE_VERSION_3) {
@@ -265,6 +286,7 @@ static int venc_set_pal(struct v4l2_subdev *sd)
 	if (venc->pdata->setup_clock(VPBE_ENC_STD, V4L2_STD_625_50) < 0)
 		return -EINVAL;
 
+	venc_enable_vpss_clock(venc->venc_type, VPBE_ENC_STD, V4L2_STD_625_50);
 	venc_enabledigitaloutput(sd, 0);
 
 	if (venc->venc_type == VPBE_VERSION_3) {
@@ -319,6 +341,7 @@ static int venc_set_480p59_94(struct v4l2_subdev *sd)
 	if (pdata->setup_clock(VPBE_ENC_DV_TIMINGS, 27000000) < 0)
 		return -EINVAL;
 
+	venc_enable_vpss_clock(venc->venc_type, VPBE_ENC_DV_TIMINGS, 27000000);
 	venc_enabledigitaloutput(sd, 0);
 
 	if (venc->venc_type == VPBE_VERSION_2)
@@ -366,6 +389,7 @@ static int venc_set_576p50(struct v4l2_subdev *sd)
 	if (pdata->setup_clock(VPBE_ENC_DV_TIMINGS, 27000000) < 0)
 		return -EINVAL;
 
+	venc_enable_vpss_clock(venc->venc_type, VPBE_ENC_DV_TIMINGS, 27000000);
 	venc_enabledigitaloutput(sd, 0);
 
 	if (venc->venc_type == VPBE_VERSION_2)
@@ -406,6 +430,7 @@ static int venc_set_720p60_internal(struct v4l2_subdev *sd)
 	if (pdata->setup_clock(VPBE_ENC_DV_TIMINGS, 74250000) < 0)
 		return -EINVAL;
 
+	venc_enable_vpss_clock(venc->venc_type, VPBE_ENC_DV_TIMINGS, 74250000);
 	venc_enabledigitaloutput(sd, 0);
 
 	venc_write(sd, VENC_OSDCLK0, 0);
@@ -434,6 +459,7 @@ static int venc_set_1080i30_internal(struct v4l2_subdev *sd)
 	if (pdata->setup_clock(VPBE_ENC_DV_TIMINGS, 74250000) < 0)
 		return -EINVAL;
 
+	venc_enable_vpss_clock(venc->venc_type, VPBE_ENC_DV_TIMINGS, 74250000);
 	venc_enabledigitaloutput(sd, 0);
 
 	venc_write(sd, VENC_OSDCLK0, 0);
-- 
1.7.4.1

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