Fcalva/gint
1
0
Fork 0
mirror of https://git.planet-casio.com/Lephenixnoir/gint.git synced 2024-12-29 13:03:36 +01:00
Code Issues Projects Releases Packages Wiki Activity Actions

cpg: provide a function to recompute clock frequency

Browse source
This commit is contained in:
Lephe 2022-04-15 21:08:37 +01:00
parent fdadb0dd71
commit 0c2935055e
No known key found for this signature in database
GPG key ID: 1BBA026E13FC0495
2 changed files with 18 additions and 7 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

5
include/gint/clock.h
View file

@ -52,6 +52,11 @@ typedef struct
module; this address never changes. */ module; this address never changes. */
const clock_frequency_t *clock_freq(void); const clock_frequency_t *clock_freq(void);
/* cpg_compute_freq(): Compute the current clock frequency
This function updates the data structure returned by clock_freq() by
determining the current clock frequencies from the CPG. */
void cpg_compute_freq(void);
//--- //---
// Overclock // Overclock
//--- //---

20
src/cpg/cpg.c
View file

@ -29,7 +29,7 @@ const clock_frequency_t *clock_freq(void)
#if defined(FX9860G) || (!defined(FX9860G) && !defined(FXCG50)) #if defined(FX9860G) || (!defined(FX9860G) && !defined(FXCG50))
#define CPG SH7705_CPG #define CPG SH7705_CPG
static void sh7705_probe(void) void sh7705_probe(void)
{ {
/* According to Sentaro21 in the sources of Ftune 1.0.1, the clock mode /* According to Sentaro21 in the sources of Ftune 1.0.1, the clock mode
is thought to be 5, which means that: is thought to be 5, which means that:
@ -115,10 +115,21 @@ static void sh7305_probe(void)
#undef CPG #undef CPG
//--- //---
// Initialization // Initialization
//--- //---
void cpg_compute_freq(void)
{
/* This avoids warnings about sh7705_probe() being undefined when
building for fxcg50 */
#if defined(FX9860G) || (!defined(FX9860G) && !defined(FXCG50))
isSH3() ? sh7705_probe() :
#endif
sh7305_probe();
}
static void configure(void) static void configure(void)
{ {
/* Disable spread spectrum in SSGSCR */ /* Disable spread spectrum in SSGSCR */
@ -127,12 +138,7 @@ static void configure(void)
SH7305_CPG.SSCGCR.SSEN = 0; SH7305_CPG.SSCGCR.SSEN = 0;
} }
/* This avoids warnings about sh7705_probe() being undefined when cpg_compute_freq();
building for fxcg50 */
#if defined(FX9860G) || (!defined(FX9860G) && !defined(FXCG50))
isSH3() ? sh7705_probe() :
#endif
sh7305_probe();
} }
//--- //---