Blackfin arch: Functional power management support
Enable: PM_SUSPEND_MEM -> Blackfin Hibernate to SDRAM
This feature requires a special bootloader (u-boot)
supporting return from hibernate.
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
diff --git a/include/asm-blackfin/dpmc.h b/include/asm-blackfin/dpmc.h
index 7f34cd3..de28e6e 100644
--- a/include/asm-blackfin/dpmc.h
+++ b/include/asm-blackfin/dpmc.h
@@ -7,63 +7,18 @@
#ifndef _BLACKFIN_DPMC_H_
#define _BLACKFIN_DPMC_H_
-#define SLEEP_MODE 1
-#define DEEP_SLEEP_MODE 2
-#define ACTIVE_PLL_DISABLED 3
-#define FULLON_MODE 4
-#define ACTIVE_PLL_ENABLED 5
-#define HIBERNATE_MODE 6
-
-#define IOCTL_FULL_ON_MODE _IO('s', 0xA0)
-#define IOCTL_ACTIVE_MODE _IO('s', 0xA1)
-#define IOCTL_SLEEP_MODE _IO('s', 0xA2)
-#define IOCTL_DEEP_SLEEP_MODE _IO('s', 0xA3)
-#define IOCTL_HIBERNATE_MODE _IO('s', 0xA4)
-#define IOCTL_CHANGE_FREQUENCY _IOW('s', 0xA5, unsigned long)
-#define IOCTL_CHANGE_VOLTAGE _IOW('s', 0xA6, unsigned long)
-#define IOCTL_SET_CCLK _IOW('s', 0xA7, unsigned long)
-#define IOCTL_SET_SCLK _IOW('s', 0xA8, unsigned long)
-#define IOCTL_GET_PLLSTATUS _IOW('s', 0xA9, unsigned long)
-#define IOCTL_GET_CORECLOCK _IOW('s', 0xAA, unsigned long)
-#define IOCTL_GET_SYSTEMCLOCK _IOW('s', 0xAB, unsigned long)
-#define IOCTL_GET_VCO _IOW('s', 0xAC, unsigned long)
-#define IOCTL_DISABLE_WDOG_TIMER _IO('s', 0xAD)
-#define IOCTL_UNMASK_WDOG_WAKEUP_EVENT _IO('s',0xAE)
-#define IOCTL_PROGRAM_WDOG_TIMER _IOW('s',0xAF,unsigned long)
-#define IOCTL_CLEAR_WDOG_WAKEUP_EVENT _IO('s',0xB0)
-#define IOCTL_SLEEP_DEEPER_MODE _IO('s',0xB1)
-
-#define DPMC_MINOR 254
-
-#define ON 0
-#define OFF 1
-
#ifdef __KERNEL__
+#ifndef __ASSEMBLY__
-unsigned long calc_volt(void);
-int calc_vlev(int vlt);
-unsigned long change_voltage(unsigned long volt);
-int calc_msel(int vco_hz);
-unsigned long change_frequency(unsigned long vco_mhz);
-int set_pll_div(unsigned short sel, unsigned char flag);
-int get_vco(void);
-unsigned long change_system_clock(unsigned long clock);
-unsigned long change_core_clock(unsigned long clock);
-unsigned long get_pll_status(void);
-void change_baud(int baud);
-void fullon_mode(void);
-void active_mode(void);
void sleep_mode(u32 sic_iwr0, u32 sic_iwr1, u32 sic_iwr2);
void deep_sleep(u32 sic_iwr0, u32 sic_iwr1, u32 sic_iwr2);
void hibernate_mode(u32 sic_iwr0, u32 sic_iwr1, u32 sic_iwr2);
void sleep_deeper(u32 sic_iwr0, u32 sic_iwr1, u32 sic_iwr2);
-void program_wdog_timer(unsigned long);
-void unmask_wdog_wakeup_evt(void);
-void clear_wdog_wakeup_evt(void);
-void disable_wdog_timer(void);
+void do_hibernate(int wakeup);
+void set_dram_srfs(void);
+void unset_dram_srfs(void);
-extern unsigned long get_cclk(void);
-extern unsigned long get_sclk(void);
+#define VRPAIR(vlev, freq) (((vlev) << 16) | ((freq) >> 16))
struct bfin_dpmc_platform_data {
const unsigned int *tuple_tab;
@@ -71,8 +26,33 @@
unsigned short vr_settling_time; /* in us */
};
-#define VRPAIR(vlev, freq) (((vlev) << 16) | ((freq) >> 16))
+#else
+#define PM_PUSH(x) \
+ R0 = [P0 + (x - SRAM_BASE_ADDRESS)];\
+ [--SP] = R0;\
+
+#define PM_POP(x) \
+ R0 = [SP++];\
+ [P0 + (x - SRAM_BASE_ADDRESS)] = R0;\
+
+#define PM_SYS_PUSH(x) \
+ R0 = [P0 + (x - PLL_CTL)];\
+ [--SP] = R0;\
+
+#define PM_SYS_POP(x) \
+ R0 = [SP++];\
+ [P0 + (x - PLL_CTL)] = R0;\
+
+#define PM_SYS_PUSH16(x) \
+ R0 = w[P0 + (x - PLL_CTL)];\
+ [--SP] = R0;\
+
+#define PM_SYS_POP16(x) \
+ R0 = [SP++];\
+ w[P0 + (x - PLL_CTL)] = R0;\
+
+#endif
#endif /* __KERNEL__ */
#endif /*_BLACKFIN_DPMC_H_*/