diff options
Diffstat (limited to 'arch/arm/mach-pxa/pxa2xx.c')
-rw-r--r-- | arch/arm/mach-pxa/pxa2xx.c | 32 |
1 files changed, 29 insertions, 3 deletions
diff --git a/arch/arm/mach-pxa/pxa2xx.c b/arch/arm/mach-pxa/pxa2xx.c index 2d26cd2afbf3..4aafd692c1e8 100644 --- a/arch/arm/mach-pxa/pxa2xx.c +++ b/arch/arm/mach-pxa/pxa2xx.c @@ -12,10 +12,12 @@ #include <linux/device.h> #include <linux/io.h> -#include <mach/hardware.h> -#include <mach/pxa2xx-regs.h> +#include "pxa2xx-regs.h" #include "mfp-pxa25x.h" -#include <mach/reset.h> +#include "generic.h" +#include "reset.h" +#include "smemc.h" +#include <linux/soc/pxa/smemc.h> #include <linux/platform_data/irda-pxaficp.h> void pxa2xx_clear_reset_status(unsigned int mask) @@ -51,3 +53,27 @@ void pxa2xx_transceiver_mode(struct device *dev, int mode) BUG(); } EXPORT_SYMBOL_GPL(pxa2xx_transceiver_mode); + +#define MDCNFG_DRAC2(mdcnfg) (((mdcnfg) >> 21) & 0x3) +#define MDCNFG_DRAC0(mdcnfg) (((mdcnfg) >> 5) & 0x3) + +int pxa2xx_smemc_get_sdram_rows(void) +{ + static int sdram_rows; + unsigned int drac2 = 0, drac0 = 0; + u32 mdcnfg; + + if (sdram_rows) + return sdram_rows; + + mdcnfg = readl_relaxed(MDCNFG); + + if (mdcnfg & (MDCNFG_DE2 | MDCNFG_DE3)) + drac2 = MDCNFG_DRAC2(mdcnfg); + + if (mdcnfg & (MDCNFG_DE0 | MDCNFG_DE1)) + drac0 = MDCNFG_DRAC0(mdcnfg); + + sdram_rows = 1 << (11 + max(drac0, drac2)); + return sdram_rows; +} |