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ARM: OMAP: mcbsp: Use per instance register cache size

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Rationale here is to remove one global variable and to make possible to have
variable size McBSP register maps inside SoC.

Signed-off-by: Jarkko Nikula <jarkko.nikula@bitmer.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Tested-by: Janusz Krzysztofik <jkrzyszt@tis.icnet.pl>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This commit is contained in:
Jarkko Nikula 2011-09-26 10:45:43 +03:00 committed by Tony Lindgren
parent 7bba67ab3a
commit ac6747ca0d
2 changed files with 5 additions and 4 deletions
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3
arch/arm/plat-omap/include/plat/mcbsp.h
View File

@ -359,6 +359,7 @@ struct omap_mcbsp {
u16 max_tx_thres; u16 max_tx_thres;
u16 max_rx_thres; u16 max_rx_thres;
void *reg_cache; void *reg_cache;
int reg_cache_size;
}; };
/** /**
@ -370,7 +371,7 @@ struct omap_mcbsp_dev_attr {
}; };
extern struct omap_mcbsp **mcbsp_ptr; extern struct omap_mcbsp **mcbsp_ptr;
extern int omap_mcbsp_count, omap_mcbsp_cache_size; extern int omap_mcbsp_count;
#define omap_mcbsp_check_valid_id(id) (id < omap_mcbsp_count) #define omap_mcbsp_check_valid_id(id) (id < omap_mcbsp_count)
#define id_to_mcbsp_ptr(id) mcbsp_ptr[id]; #define id_to_mcbsp_ptr(id) mcbsp_ptr[id];

6
arch/arm/plat-omap/mcbsp.c
View File

@ -31,7 +31,7 @@
#include "../mach-omap2/cm-regbits-34xx.h" #include "../mach-omap2/cm-regbits-34xx.h"
struct omap_mcbsp **mcbsp_ptr; struct omap_mcbsp **mcbsp_ptr;
int omap_mcbsp_count, omap_mcbsp_cache_size; int omap_mcbsp_count;
static void omap_mcbsp_write(struct omap_mcbsp *mcbsp, u16 reg, u32 val) static void omap_mcbsp_write(struct omap_mcbsp *mcbsp, u16 reg, u32 val)
{ {
@ -678,7 +678,7 @@ int omap_mcbsp_request(unsigned int id)
} }
mcbsp = id_to_mcbsp_ptr(id); mcbsp = id_to_mcbsp_ptr(id);
reg_cache = kzalloc(omap_mcbsp_cache_size, GFP_KERNEL); reg_cache = kzalloc(mcbsp->reg_cache_size, GFP_KERNEL);
if (!reg_cache) { if (!reg_cache) {
return -ENOMEM; return -ENOMEM;
} }
@ -1225,7 +1225,7 @@ static int __devinit omap_mcbsp_probe(struct platform_device *pdev)
} }
} }
mcbsp->phys_base = res->start; mcbsp->phys_base = res->start;
omap_mcbsp_cache_size = resource_size(res); mcbsp->reg_cache_size = resource_size(res);
mcbsp->io_base = ioremap(res->start, resource_size(res)); mcbsp->io_base = ioremap(res->start, resource_size(res));
if (!mcbsp->io_base) { if (!mcbsp->io_base) {
ret = -ENOMEM; ret = -ENOMEM;