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Diffstat (limited to 'arch/arm/mach-omap2/powerdomain.c')
-rw-r--r--arch/arm/mach-omap2/powerdomain.c73
1 files changed, 73 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/powerdomain.c b/arch/arm/mach-omap2/powerdomain.c
index dc03289d5dea..e9eeaa4fbd47 100644
--- a/arch/arm/mach-omap2/powerdomain.c
+++ b/arch/arm/mach-omap2/powerdomain.c
@@ -679,6 +679,29 @@ int pwrdm_read_prev_logic_pwrst(struct powerdomain *pwrdm)
}
/**
+ * pwrdm_read_logic_retst - get next powerdomain logic power state
+ * @pwrdm: struct powerdomain * to get next logic power state
+ *
+ * Return the powerdomain pwrdm's logic power state. Returns -EINVAL
+ * if the powerdomain pointer is null or returns the next logic
+ * power state upon success.
+ */
+int pwrdm_read_logic_retst(struct powerdomain *pwrdm)
+{
+ if (!pwrdm)
+ return -EINVAL;
+
+ /*
+ * The register bit names below may not correspond to the
+ * actual names of the bits in each powerdomain's register,
+ * but the type of value returned is the same for each
+ * powerdomain.
+ */
+ return prm_read_mod_bits_shift(pwrdm->prcm_offs, pwrstctrl_reg_offs,
+ OMAP3430_LOGICSTATEST);
+}
+
+/**
* pwrdm_read_mem_pwrst - get current memory bank power state
* @pwrdm: struct powerdomain * to get current memory bank power state
* @bank: memory bank number (0-3)
@@ -785,6 +808,56 @@ int pwrdm_read_prev_mem_pwrst(struct powerdomain *pwrdm, u8 bank)
}
/**
+ * pwrdm_read_mem_retst - get next memory bank power state
+ * @pwrdm: struct powerdomain * to get mext memory bank power state
+ * @bank: memory bank number (0-3)
+ *
+ * Return the powerdomain pwrdm's next memory power state for bank
+ * x. Returns -EINVAL if the powerdomain pointer is null, -EEXIST if
+ * the target memory bank does not exist or is not controllable, or
+ * returns the next memory power state upon success.
+ */
+int pwrdm_read_mem_retst(struct powerdomain *pwrdm, u8 bank)
+{
+ u32 m;
+
+ if (!pwrdm)
+ return -EINVAL;
+
+ if (pwrdm->banks < (bank + 1))
+ return -EEXIST;
+
+ /*
+ * The register bit names below may not correspond to the
+ * actual names of the bits in each powerdomain's register,
+ * but the type of value returned is the same for each
+ * powerdomain.
+ */
+ switch (bank) {
+ case 0:
+ m = OMAP_MEM0_RETSTATE_MASK;
+ break;
+ case 1:
+ m = OMAP_MEM1_RETSTATE_MASK;
+ break;
+ case 2:
+ m = OMAP_MEM2_RETSTATE_MASK;
+ break;
+ case 3:
+ m = OMAP_MEM3_RETSTATE_MASK;
+ break;
+ case 4:
+ m = OMAP_MEM4_RETSTATE_MASK;
+ default:
+ WARN_ON(1); /* should never happen */
+ return -EEXIST;
+ }
+
+ return prm_read_mod_bits_shift(pwrdm->prcm_offs,
+ pwrstctrl_reg_offs, m);
+}
+
+/**
* pwrdm_clear_all_prev_pwrst - clear previous powerstate register for a pwrdm
* @pwrdm: struct powerdomain * to clear
*