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authorSylwester Nawrocki <sylvester.nawrocki@gmail.com>2012-08-28 15:59:42 -0700
committerKukjin Kim <kgene.kim@samsung.com>2012-09-21 08:04:40 +0900
commit98a7069ba04faf3313dcc5fa69476fc3b5ab3794 (patch)
tree91fa522f3693f5e2275fe142644175d164a3d72d
parent859a09e671772db5781d27c9c0b5828a3bca094c (diff)
ARM: S3C24XX: Add .get_rate callback for "camif-upll" clock
Add missing get_rate callback for the "camif-upll" clock, so frequency of this clock is properly reported with clk_get_rate(). Signed-off-by: Sylwester Nawrocki <sylvester.nawrocki@gmail.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
-rw-r--r--arch/arm/mach-s3c24xx/clock-s3c2440.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/arm/mach-s3c24xx/clock-s3c2440.c b/arch/arm/mach-s3c24xx/clock-s3c2440.c
index cb2883d553b5..749220f91a70 100644
--- a/arch/arm/mach-s3c24xx/clock-s3c2440.c
+++ b/arch/arm/mach-s3c24xx/clock-s3c2440.c
@@ -87,6 +87,19 @@ static int s3c2440_camif_upll_setrate(struct clk *clk, unsigned long rate)
return 0;
}
+static unsigned long s3c2440_camif_upll_getrate(struct clk *clk)
+{
+ unsigned long parent_rate = clk_get_rate(clk->parent);
+ unsigned long camdivn = __raw_readl(S3C2440_CAMDIVN);
+
+ if (!(camdivn & S3C2440_CAMDIVN_CAMCLK_SEL))
+ return parent_rate;
+
+ camdivn &= S3C2440_CAMDIVN_CAMCLK_MASK;
+
+ return parent_rate / (camdivn + 1) / 2;
+}
+
/* Extra S3C2440 clocks */
static struct clk s3c2440_clk_cam = {
@@ -99,6 +112,7 @@ static struct clk s3c2440_clk_cam_upll = {
.name = "camif-upll",
.ops = &(struct clk_ops) {
.set_rate = s3c2440_camif_upll_setrate,
+ .get_rate = s3c2440_camif_upll_getrate,
.round_rate = s3c2440_camif_upll_round,
},
};