cleanup linux cpuinfo code

sonynwz: quirk for cpufreq broken driver

There was some redundancy between frequency_linux(cpu, true) and
current_scaling_frequency(), also I see no reason to compile the cpuinfo stuff
unconditionally and the scaling info only on DX since it was already printed
some partial scaling info anyway. Thus compile all the code unconditionally
and simplify the logic in the debug menu. Also avoid putting buffers of size
PATH_MAX on stack since it can be quite big and we only requires 64 bytes
for those paths.

On Sony NWZ, the cpu driver reports frequency in MHz instead of kHz thus we need
to make the cpuinfo code aware of that bug.

Change-Id: I61af45ab5f179ecc909b4841b9137a915a60193a

1 files changed, 5 insertions, 11 deletions

diff --git a/apps/debug_menu.c b/apps/debug_menu.c
index 5224dbe267..4947f30695 100644
--- a/apps/debug_menu.c
+++ b/apps/debug_menu.c
@@ -240,9 +240,13 @@ static const char* get_cpuinfo(int selected_item, void *data,
         {
             int cpu = (selected_item - 5) / (state_count + 1);
             int cpu_line = (selected_item - 5) % (state_count + 1);
-#if defined(DX50) || defined(DX90)
+
+            /* scaling info */
             int min_freq = min_scaling_frequency(cpu);
             int cur_freq = current_scaling_frequency(cpu);
+            /* fallback if scaling frequency is not available */
+            if(cur_freq <= 0)
+                cur_freq = frequency_linux(cpu);
             int max_freq = max_scaling_frequency(cpu);
             char governor[20];
             bool have_governor = current_scaling_governor(cpu, governor, sizeof(governor));
@@ -256,16 +260,6 @@ static const char* get_cpuinfo(int selected_item, void *data,
                         cur_freq > 0 ? cur_freq/1000 : -1,
                         max_freq > 0 ? max_freq/1000 : -1);
             }
-#else
-            int freq1 = frequency_linux(cpu, false);
-            int freq2 = frequency_linux(cpu, true);
-            if (cpu_line == 0)
-            {
-                sprintf(buffer, " CPU%d: Cur/Scal freq: %d/%d MHz", cpu,
-                                freq1 > 0 ? freq1/1000 : -1,
-                                freq2 > 0 ? freq2/1000 : -1);
-            }
-#endif
             else
             {
                 cpustatetimes_linux(cpu, states, ARRAYLEN(states));