diff options
Diffstat (limited to 'arch/arm/mach-omap2/sdrc.c')
| -rw-r--r-- | arch/arm/mach-omap2/sdrc.c | 35 |
1 files changed, 31 insertions, 4 deletions
diff --git a/arch/arm/mach-omap2/sdrc.c b/arch/arm/mach-omap2/sdrc.c index 9e3bd4fa781..9a592199321 100644 --- a/arch/arm/mach-omap2/sdrc.c +++ b/arch/arm/mach-omap2/sdrc.c @@ -23,13 +23,13 @@ #include <linux/clk.h> #include <linux/io.h> -#include <mach/common.h> -#include <mach/clock.h> -#include <mach/sram.h> +#include <plat/common.h> +#include <plat/clock.h> +#include <plat/sram.h> #include "prm.h" -#include <mach/sdrc.h> +#include <plat/sdrc.h> #include "sdrc.h" static struct omap_sdrc_params *sdrc_init_params_cs0, *sdrc_init_params_cs1; @@ -37,12 +37,38 @@ static struct omap_sdrc_params *sdrc_init_params_cs0, *sdrc_init_params_cs1; void __iomem *omap2_sdrc_base; void __iomem *omap2_sms_base; +struct omap2_sms_regs { + u32 sms_sysconfig; +}; + +static struct omap2_sms_regs sms_context; + /* SDRC_POWER register bits */ #define SDRC_POWER_EXTCLKDIS_SHIFT 3 #define SDRC_POWER_PWDENA_SHIFT 2 #define SDRC_POWER_PAGEPOLICY_SHIFT 0 /** + * omap2_sms_save_context - Save SMS registers + * + * Save SMS registers that need to be restored after off mode. + */ +void omap2_sms_save_context(void) +{ + sms_context.sms_sysconfig = sms_read_reg(SMS_SYSCONFIG); +} + +/** + * omap2_sms_restore_context - Restore SMS registers + * + * Restore SMS registers that need to be Restored after off mode. + */ +void omap2_sms_restore_context(void) +{ + sms_write_reg(sms_context.sms_sysconfig, SMS_SYSCONFIG); +} + +/** * omap2_sdrc_get_params - return SDRC register values for a given clock rate * @r: SDRC clock rate (in Hz) * @sdrc_cs0: chip select 0 ram timings ** @@ -132,4 +158,5 @@ void __init omap2_sdrc_init(struct omap_sdrc_params *sdrc_cs0, l = (1 << SDRC_POWER_EXTCLKDIS_SHIFT) | (1 << SDRC_POWER_PAGEPOLICY_SHIFT); sdrc_write_reg(l, SDRC_POWER); + omap2_sms_save_context(); } |