diff options
author | Tony Lindgren <tony@atomide.com> | 2010-02-24 20:53:03 -0800 |
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committer | Tony Lindgren <tony@atomide.com> | 2010-02-24 20:53:03 -0800 |
commit | b610ec502376d915b76a62e22576c5d0462cc9c9 (patch) | |
tree | 55206c47da1f010588964edafe09284fce704b63 /arch/arm/mach-omap2/powerdomain.c | |
parent | 0fdc54b2019700a4b50179914e810367c14044a3 (diff) | |
parent | ad001f145dcf457251e78fe2ae2ed40df1bda4ed (diff) |
Merge branch 'for_2.6.34_b' of git://git.pwsan.com/linux-2.6 into omap-for-linus
Diffstat (limited to 'arch/arm/mach-omap2/powerdomain.c')
-rw-r--r-- | arch/arm/mach-omap2/powerdomain.c | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/powerdomain.c b/arch/arm/mach-omap2/powerdomain.c index dc03289d5de..9a0fb385622 100644 --- a/arch/arm/mach-omap2/powerdomain.c +++ b/arch/arm/mach-omap2/powerdomain.c @@ -125,6 +125,10 @@ static int _pwrdm_register(struct powerdomain *pwrdm) for (i = 0; i < PWRDM_MAX_PWRSTS; i++) pwrdm->state_counter[i] = 0; + pwrdm->ret_logic_off_counter = 0; + for (i = 0; i < pwrdm->banks; i++) + pwrdm->ret_mem_off_counter[i] = 0; + pwrdm_wait_transition(pwrdm); pwrdm->state = pwrdm_read_pwrst(pwrdm); pwrdm->state_counter[pwrdm->state] = 1; @@ -134,6 +138,25 @@ static int _pwrdm_register(struct powerdomain *pwrdm) return 0; } +static void _update_logic_membank_counters(struct powerdomain *pwrdm) +{ + int i; + u8 prev_logic_pwrst, prev_mem_pwrst; + + prev_logic_pwrst = pwrdm_read_prev_logic_pwrst(pwrdm); + if ((pwrdm->pwrsts_logic_ret == PWRSTS_OFF_RET) && + (prev_logic_pwrst == PWRDM_POWER_OFF)) + pwrdm->ret_logic_off_counter++; + + for (i = 0; i < pwrdm->banks; i++) { + prev_mem_pwrst = pwrdm_read_prev_mem_pwrst(pwrdm, i); + + if ((pwrdm->pwrsts_mem_ret[i] == PWRSTS_OFF_RET) && + (prev_mem_pwrst == PWRDM_POWER_OFF)) + pwrdm->ret_mem_off_counter[i]++; + } +} + static int _pwrdm_state_switch(struct powerdomain *pwrdm, int flag) { @@ -153,6 +176,8 @@ static int _pwrdm_state_switch(struct powerdomain *pwrdm, int flag) prev = pwrdm_read_prev_pwrst(pwrdm); if (pwrdm->state != prev) pwrdm->state_counter[prev]++; + if (prev == PWRDM_POWER_RET) + _update_logic_membank_counters(pwrdm); break; default: return -EINVAL; @@ -679,6 +704,29 @@ 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 +833,56 @@ 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 * |