diff options
| author | Jon Hunter <jon-hunter@ti.com> | 2013-02-21 15:25:23 -0600 |
|---|---|---|
| committer | Jon Hunter <jon-hunter@ti.com> | 2013-04-01 14:53:41 -0500 |
| commit | aa8d4767da2a2a29a628dc0dadb59a010f0ec18e (patch) | |
| tree | 2cd2bc90120b1c914477a35e922e7678908b1268 /arch/arm/mach-omap2/gpmc.h | |
| parent | c3be5b457ae1bb6dc93ef25bfa03e595969acbfc (diff) | |
| download | linux-aa8d4767da2a2a29a628dc0dadb59a010f0ec18e.tar.bz2 | |
ARM: OMAP2+: Add function for configuring GPMC settings
The GPMC has various different configuration options such as bus-width,
synchronous or asychronous mode selection, burst mode options etc.
Currently, there is no common function for configuring these options and
various devices set these options by either programming the GPMC CONFIG1
register directly or by calling gpmc_cs_configure() to set some of the
options.
Add a new function for configuring all of the GPMC options. Having a common
function for configuring this options will simplify code and ease the
migration to device-tree.
Also add a new capability flag to detect devices that support the
address-address-data multiplexing mode.
Signed-off-by: Jon Hunter <jon-hunter@ti.com>
Tested-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Diffstat (limited to 'arch/arm/mach-omap2/gpmc.h')
| -rw-r--r-- | arch/arm/mach-omap2/gpmc.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/gpmc.h b/arch/arm/mach-omap2/gpmc.h index 39e4e04acdc9..ce6ae218f41f 100644 --- a/arch/arm/mach-omap2/gpmc.h +++ b/arch/arm/mach-omap2/gpmc.h @@ -76,6 +76,11 @@ #define GPMC_IRQ_FIFOEVENTENABLE 0x01 #define GPMC_IRQ_COUNT_EVENT 0x02 +#define GPMC_BURST_4 4 /* 4 word burst */ +#define GPMC_BURST_8 8 /* 8 word burst */ +#define GPMC_BURST_16 16 /* 16 word burst */ +#define GPMC_DEVWIDTH_8BIT 1 /* 8-bit device width */ +#define GPMC_DEVWIDTH_16BIT 2 /* 16-bit device width */ #define GPMC_MUX_AAD 1 /* Addr-Addr-Data multiplex */ #define GPMC_MUX_AD 2 /* Addr-Data multiplex */ @@ -217,6 +222,7 @@ extern unsigned int gpmc_ticks_to_ns(unsigned int ticks); extern void gpmc_cs_write_reg(int cs, int idx, u32 val); extern int gpmc_calc_divider(unsigned int sync_clk); extern int gpmc_cs_set_timings(int cs, const struct gpmc_timings *t); +extern int gpmc_cs_program_settings(int cs, struct gpmc_settings *p); extern int gpmc_cs_request(int cs, unsigned long size, unsigned long *base); extern void gpmc_cs_free(int cs); extern void omap3_gpmc_save_context(void); |