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authorThierry Reding <treding@nvidia.com>2015-08-14 13:40:09 +0300
committerThierry Reding <treding@nvidia.com>2015-10-20 14:56:54 +0300
commit4182b8d454331c5ca85b57c0a7357073d96b170f (patch)
treec11fe0a90b81c8f8c060ffb2cb73388fdb4ffb76 /drivers/clk/tegra/clk-dfll.c
parent10d9be6ebe9199feb7680433a24b564a31a8f9b1 (diff)
downloadlinux-4182b8d454331c5ca85b57c0a7357073d96b170f.tar.xz
clk: tegra: dfll: Monitor code is DEBUG_FS only
The monitor code is used with DEBUG_FS only, so move it into the corresponding #ifdef block to avoid potential compiler warnings. Signed-off-by: Thierry Reding <treding@nvidia.com>
Diffstat (limited to 'drivers/clk/tegra/clk-dfll.c')
-rw-r--r--drivers/clk/tegra/clk-dfll.c99
1 files changed, 49 insertions, 50 deletions
diff --git a/drivers/clk/tegra/clk-dfll.c b/drivers/clk/tegra/clk-dfll.c
index 6a75a7482b08..c56a5c735484 100644
--- a/drivers/clk/tegra/clk-dfll.c
+++ b/drivers/clk/tegra/clk-dfll.c
@@ -469,56 +469,6 @@ static unsigned long dfll_scale_dvco_rate(int scale_bits,
}
/*
- * Monitor control
- */
-
-/**
- * dfll_calc_monitored_rate - convert DFLL_MONITOR_DATA_VAL rate into real freq
- * @monitor_data: value read from the DFLL_MONITOR_DATA_VAL bitfield
- * @ref_rate: DFLL reference clock rate
- *
- * Convert @monitor_data from DFLL_MONITOR_DATA_VAL units into cycles
- * per second. Returns the converted value.
- */
-static u64 dfll_calc_monitored_rate(u32 monitor_data,
- unsigned long ref_rate)
-{
- return monitor_data * (ref_rate / REF_CLK_CYC_PER_DVCO_SAMPLE);
-}
-
-/**
- * dfll_read_monitor_rate - return the DFLL's output rate from internal monitor
- * @td: DFLL instance
- *
- * If the DFLL is enabled, return the last rate reported by the DFLL's
- * internal monitoring hardware. This works in both open-loop and
- * closed-loop mode, and takes the output scaler setting into account.
- * Assumes that the monitor was programmed to monitor frequency before
- * the sample period started. If the driver believes that the DFLL is
- * currently uninitialized or disabled, it will return 0, since
- * otherwise the DFLL monitor data register will return the last
- * measured rate from when the DFLL was active.
- */
-static u64 dfll_read_monitor_rate(struct tegra_dfll *td)
-{
- u32 v, s;
- u64 pre_scaler_rate, post_scaler_rate;
-
- if (!dfll_is_running(td))
- return 0;
-
- v = dfll_readl(td, DFLL_MONITOR_DATA);
- v = (v & DFLL_MONITOR_DATA_VAL_MASK) >> DFLL_MONITOR_DATA_VAL_SHIFT;
- pre_scaler_rate = dfll_calc_monitored_rate(v, td->ref_rate);
-
- s = dfll_readl(td, DFLL_FREQ_REQ);
- s = (s & DFLL_FREQ_REQ_SCALE_MASK) >> DFLL_FREQ_REQ_SCALE_SHIFT;
- post_scaler_rate = dfll_scale_dvco_rate(s, pre_scaler_rate);
-
- return post_scaler_rate;
-}
-
-/*
* DFLL mode switching
*/
@@ -1096,6 +1046,55 @@ static void dfll_unregister_clk(struct tegra_dfll *td)
*/
#ifdef CONFIG_DEBUG_FS
+/*
+ * Monitor control
+ */
+
+/**
+ * dfll_calc_monitored_rate - convert DFLL_MONITOR_DATA_VAL rate into real freq
+ * @monitor_data: value read from the DFLL_MONITOR_DATA_VAL bitfield
+ * @ref_rate: DFLL reference clock rate
+ *
+ * Convert @monitor_data from DFLL_MONITOR_DATA_VAL units into cycles
+ * per second. Returns the converted value.
+ */
+static u64 dfll_calc_monitored_rate(u32 monitor_data,
+ unsigned long ref_rate)
+{
+ return monitor_data * (ref_rate / REF_CLK_CYC_PER_DVCO_SAMPLE);
+}
+
+/**
+ * dfll_read_monitor_rate - return the DFLL's output rate from internal monitor
+ * @td: DFLL instance
+ *
+ * If the DFLL is enabled, return the last rate reported by the DFLL's
+ * internal monitoring hardware. This works in both open-loop and
+ * closed-loop mode, and takes the output scaler setting into account.
+ * Assumes that the monitor was programmed to monitor frequency before
+ * the sample period started. If the driver believes that the DFLL is
+ * currently uninitialized or disabled, it will return 0, since
+ * otherwise the DFLL monitor data register will return the last
+ * measured rate from when the DFLL was active.
+ */
+static u64 dfll_read_monitor_rate(struct tegra_dfll *td)
+{
+ u32 v, s;
+ u64 pre_scaler_rate, post_scaler_rate;
+
+ if (!dfll_is_running(td))
+ return 0;
+
+ v = dfll_readl(td, DFLL_MONITOR_DATA);
+ v = (v & DFLL_MONITOR_DATA_VAL_MASK) >> DFLL_MONITOR_DATA_VAL_SHIFT;
+ pre_scaler_rate = dfll_calc_monitored_rate(v, td->ref_rate);
+
+ s = dfll_readl(td, DFLL_FREQ_REQ);
+ s = (s & DFLL_FREQ_REQ_SCALE_MASK) >> DFLL_FREQ_REQ_SCALE_SHIFT;
+ post_scaler_rate = dfll_scale_dvco_rate(s, pre_scaler_rate);
+
+ return post_scaler_rate;
+}
static int attr_enable_get(void *data, u64 *val)
{