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authorKristoffer Nyborg Gregertsen <kngregertsen@norway.atmel.com>2007-08-17 16:59:57 +0200
committerHaavard Skinnemoen <hskinnemoen@atmel.com>2007-10-11 13:32:49 +0200
commitaf8184718a322ae589efa583aa69ffdae61bf266 (patch)
tree7324ba9e6a14e78b89b703bea7d0594a0ae9ef6e /include/asm-avr32
parent193fdd1a99db8623697cb18a13dbcaa4eadbb1f2 (diff)
[AVR32] SMC configuration in clock cycles
This patch makes the SMC configuration take timings in clock cycles instead of nanoseconds. A function to calculate timings in clock cycles is added. This patch removes the rounding troubles of the previous SMC configuration method. [hskinnemoen@atmel.com: fix atstk1002/atngw100 flash config] Signed-off-by: Kristoffer Nyborg Gregertsen <gregerts@stud.ntnu.no> Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Diffstat (limited to 'include/asm-avr32')
-rw-r--r--include/asm-avr32/arch-at32ap/smc.h51
1 files changed, 41 insertions, 10 deletions
diff --git a/include/asm-avr32/arch-at32ap/smc.h b/include/asm-avr32/arch-at32ap/smc.h
index 07152b7fd9c..c98eea44a70 100644
--- a/include/asm-avr32/arch-at32ap/smc.h
+++ b/include/asm-avr32/arch-at32ap/smc.h
@@ -15,22 +15,50 @@
/*
* All timing parameters are in nanoseconds.
*/
+struct smc_timing {
+ /* Delay from address valid to assertion of given strobe */
+ int ncs_read_setup;
+ int nrd_setup;
+ int ncs_write_setup;
+ int nwe_setup;
+
+ /* Pulse length of given strobe */
+ int ncs_read_pulse;
+ int nrd_pulse;
+ int ncs_write_pulse;
+ int nwe_pulse;
+
+ /* Total cycle length of given operation */
+ int read_cycle;
+ int write_cycle;
+
+ /* Minimal recovery times, will extend cycle if needed */
+ int ncs_read_recover;
+ int nrd_recover;
+ int ncs_write_recover;
+ int nwe_recover;
+};
+
+/*
+ * All timing parameters are in clock cycles.
+ */
struct smc_config {
+
/* Delay from address valid to assertion of given strobe */
- u16 ncs_read_setup;
- u16 nrd_setup;
- u16 ncs_write_setup;
- u16 nwe_setup;
+ u8 ncs_read_setup;
+ u8 nrd_setup;
+ u8 ncs_write_setup;
+ u8 nwe_setup;
/* Pulse length of given strobe */
- u16 ncs_read_pulse;
- u16 nrd_pulse;
- u16 ncs_write_pulse;
- u16 nwe_pulse;
+ u8 ncs_read_pulse;
+ u8 nrd_pulse;
+ u8 ncs_write_pulse;
+ u8 nwe_pulse;
/* Total cycle length of given operation */
- u16 read_cycle;
- u16 write_cycle;
+ u8 read_cycle;
+ u8 write_cycle;
/* Bus width in bytes */
u8 bus_width;
@@ -76,6 +104,9 @@ struct smc_config {
unsigned int tdf_mode:1;
};
+extern void smc_set_timing(struct smc_config *config,
+ const struct smc_timing *timing);
+
extern int smc_set_configuration(int cs, const struct smc_config *config);
extern struct smc_config *smc_get_configuration(int cs);