ALSA: hdspm - Refactor sample rate acquisition

This commit introduces hdspm_get_pll_freq() to avoid code duplication.
Reading the sample rate from the DDS register will be required by
upcoming code.

Signed-off-by: Adrian Knoth <adi@drcomp.erfurt.thur.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 13 insertions, 3 deletions

diff --git a/sound/pci/rme9652/hdspm.c b/sound/pci/rme9652/hdspm.c
index 223c3d9cc69e..50cba5ce54fe 100644
--- a/sound/pci/rme9652/hdspm.c
+++ b/sound/pci/rme9652/hdspm.c
@@ -969,6 +969,7 @@ static int snd_hdspm_create_pcm(struct snd_card *card,
                                 struct hdspm *hdspm);
 
 static inline void snd_hdspm_initialize_midi_flush(struct hdspm *hdspm);
+static inline int hdspm_get_pll_freq(struct hdspm *hdspm);
 static int hdspm_update_simple_mixer_controls(struct hdspm *hdspm);
 static int hdspm_autosync_ref(struct hdspm *hdspm);
 static int snd_hdspm_set_defaults(struct hdspm *hdspm);
@@ -1979,16 +1980,25 @@ static void hdspm_midi_tasklet(unsigned long arg)
 /* get the system sample rate which is set */
 
 
+static inline int hdspm_get_pll_freq(struct hdspm *hdspm)
+{
+        unsigned int period, rate;
+
+        period = hdspm_read(hdspm, HDSPM_RD_PLL_FREQ);
+        rate = hdspm_calc_dds_value(hdspm, period);
+
+        return rate;
+}
+
 /**
  * Calculate the real sample rate from the
  * current DDS value.
  **/
 static int hdspm_get_system_sample_rate(struct hdspm *hdspm)
 {
-        unsigned int period, rate;
+        unsigned int rate;
 
-        period = hdspm_read(hdspm, HDSPM_RD_PLL_FREQ);
-        rate = hdspm_calc_dds_value(hdspm, period);
+        rate = hdspm_get_pll_freq(hdspm);
 
         if (rate > 207000) {
                 /* Unreasonable high sample rate as seen on PCI MADI cards. */