linux-kernel - [ 46/68] OMAP: DSS2: HDMI: use default dividers

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Message-Id: <20120309190218.644897141@linuxfoundation.org>
Date:	Fri, 09 Mar 2012 11:03:00 -0800
From:	Greg KH <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:	torvalds@...ux-foundation.org, akpm@...ux-foundation.org,
	alan@...rguk.ukuu.org.uk, Mythri P K <mythripk@...com>,
	Tony Lindgren <tony@...mide.com>,
	Tomi Valkeinen <tomi.valkeinen@...com>
Subject: [ 46/68] OMAP: DSS2: HDMI: use default dividers

3.0-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Tomi Valkeinen <tomi.valkeinen@...com>

commit 8d88767a4377171752c22ac39bcb2b505eb751da upstream.

Use default regn and regm2 dividers in the hdmi driver if the board file
does not define them.

Cc: Mythri P K <mythripk@...com>
Acked-by: Tony Lindgren <tony@...mide.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@...com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 arch/arm/mach-omap2/board-4430sdp.c |    9 ---------
 drivers/video/omap2/dss/hdmi.c      |   15 +++++++++++++--
 2 files changed, 13 insertions(+), 11 deletions(-)

--- a/arch/arm/mach-omap2/board-4430sdp.c
+++ b/arch/arm/mach-omap2/board-4430sdp.c
@@ -617,15 +617,6 @@ static struct omap_dss_device sdp4430_hd
 	.name = "hdmi",
 	.driver_name = "hdmi_panel",
 	.type = OMAP_DISPLAY_TYPE_HDMI,
-	.clocks	= {
-		.dispc	= {
-			.dispc_fclk_src	= OMAP_DSS_CLK_SRC_FCK,
-		},
-		.hdmi	= {
-			.regn	= 15,
-			.regm2	= 1,
-		},
-	},
 	.platform_enable = sdp4430_panel_enable_hdmi,
 	.platform_disable = sdp4430_panel_disable_hdmi,
 	.channel = OMAP_DSS_CHANNEL_DIGIT,
--- a/drivers/video/omap2/dss/hdmi.c
+++ b/drivers/video/omap2/dss/hdmi.c
@@ -40,6 +40,9 @@
 #include "hdmi.h"
 #include "dss_features.h"
 
+#define HDMI_DEFAULT_REGN 15
+#define HDMI_DEFAULT_REGM2 1
+
 static struct {
 	struct mutex lock;
 	struct omap_display_platform_data *pdata;
@@ -1069,7 +1072,11 @@ static void hdmi_compute_pll(struct omap
 	 * Input clock is predivided by N + 1
 	 * out put of which is reference clk
 	 */
-	pi->regn = dssdev->clocks.hdmi.regn;
+	if (dssdev->clocks.hdmi.regn == 0)
+		pi->regn = HDMI_DEFAULT_REGN;
+	else
+		pi->regn = dssdev->clocks.hdmi.regn;
+
 	refclk = clkin / (pi->regn + 1);
 
 	/*
@@ -1077,7 +1084,11 @@ static void hdmi_compute_pll(struct omap
 	 * Multiplying by 100 to avoid fractional part removal
 	 */
 	pi->regm = (phy * 100 / (refclk)) / 100;
-	pi->regm2 = dssdev->clocks.hdmi.regm2;
+
+	if (dssdev->clocks.hdmi.regm2 == 0)
+		pi->regm2 = HDMI_DEFAULT_REGM2;
+	else
+		pi->regm2 = dssdev->clocks.hdmi.regm2;
 
 	/*
 	 * fractional multiplier is remainder of the difference between


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