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author | Olof Johansson <olof@lixom.net> | 2012-11-30 06:49:30 (GMT) |
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committer | Olof Johansson <olof@lixom.net> | 2012-11-30 06:49:30 (GMT) |
commit | 9121dfca73d81fa886f15610cac2bf372391f3eb (patch) | |
tree | 9aff09bb821f632ea6b7a1117c094d662eb2ecd3 /arch/arm/mach-omap2/clkt2xxx_apll.c | |
parent | 77f9db89c928773e5fb1df0df4d13d5cc8abd178 (diff) | |
parent | 8b9c1ac2e11a9fb3a5a8860fb7570ff7633aa7f7 (diff) | |
download | linux-fsl-qoriq-9121dfca73d81fa886f15610cac2bf372391f3eb.tar.xz |
Merge tag 'omap-for-v3.8/devel-prcm-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/pm2
From Tony Lindgren:
omap prcm changes via Paul Walmsley <paul@pwsan.com>:
Some miscellaneous OMAP hwmod changes for 3.8, along with a PRM
change needed for one of the hwmod patches to function.
Basic test logs for this branch on top of Tony's
omap-for-v3.8/clock branch at commit
558a0780b0a04862a678f7823215424b4e5501f9 are here:
http://www.pwsan.com/omap/testlogs/hwmod_devel_a_3.8/20121121161522/
However, omap-for-v3.8/clock at 558a0780 does not include some fixes
that are needed for a successful test. With several reverts,
fixes, and workarounds applied, the following test logs were
obtained:
http://www.pwsan.com/omap/testlogs/TEST_hwmod_devel_a_3.8/20121121162719/
which indicate that the series tests cleanly.
* tag 'omap-for-v3.8/devel-prcm-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap: (49 commits)
ARM: OMAP2+: omap_device: Correct resource handling for DT boot
ARM: OMAP2+: hwmod: Add possibility to count hwmod resources based on type
ARM: OMAP2+: hwmod: Add support for per hwmod/module context lost count
ARM: OMAP2+: PRM: initialize some PRM functions early
ARM: OMAP2+: clock: Cleanup !CONFIG_COMMON_CLK parts
ARM: OMAP2xxx: clock: drop obsolete clock data
ARM: OMAP2: clock: Cleanup !CONFIG_COMMON_CLK parts
ARM: OMAP3+: DPLL: drop !CONFIG_COMMON_CLK sections
ARM: AM33xx: clock: drop obsolete clock data
ARM: OMAP3xxx: clk: drop obsolete clock data
ARM: OMAP3: clock: Cleanup !CONFIG_COMMON_CLK parts
ARM: OMAP44xx: clock: drop obsolete clock data
ARM: OMAP4: clock: Cleanup !CONFIG_COMMON_CLK parts
ARM: OMAP: hwmod: Cleanup !CONFIG_COMMON_CLK parts
ARM: OMAP: clock: Switch to COMMON clk
ARM: OMAP2: clock: Add 24xx data using common struct clk
ARM: OMAP3: clock: Add 3xxx data using common struct clk
ARM: AM33XX: clock: add clock data in common clock format
ARM: OMAP4: clock: Add 44xx data using common struct clk
ARM: OMAP2+: clock: add OMAP CCF convenience macros to mach-omap2/clock.h
...
Some context conflicts due to nearby changes resolved in
arch/arm/mach-omap2/io.c.
Signed-off-by: Olof Johansson <olof@lixom.net>
Diffstat (limited to 'arch/arm/mach-omap2/clkt2xxx_apll.c')
-rw-r--r-- | arch/arm/mach-omap2/clkt2xxx_apll.c | 62 |
1 files changed, 44 insertions, 18 deletions
diff --git a/arch/arm/mach-omap2/clkt2xxx_apll.c b/arch/arm/mach-omap2/clkt2xxx_apll.c index 8c5b13e..25b1fee 100644 --- a/arch/arm/mach-omap2/clkt2xxx_apll.c +++ b/arch/arm/mach-omap2/clkt2xxx_apll.c @@ -38,62 +38,88 @@ /* Private functions */ -static int _apll96_enable(struct clk *clk) +/** + * omap2xxx_clk_apll_locked - is the APLL locked? + * @hw: struct clk_hw * of the APLL to check + * + * If the APLL IP block referred to by @hw indicates that it's locked, + * return true; otherwise, return false. + */ +static bool omap2xxx_clk_apll_locked(struct clk_hw *hw) +{ + struct clk_hw_omap *clk = to_clk_hw_omap(hw); + u32 r, apll_mask; + + apll_mask = EN_APLL_LOCKED << clk->enable_bit; + + r = omap2_cm_read_mod_reg(PLL_MOD, CM_CLKEN); + + return ((r & apll_mask) == apll_mask) ? true : false; +} + +int omap2_clk_apll96_enable(struct clk_hw *hw) { return omap2xxx_cm_apll96_enable(); } -static int _apll54_enable(struct clk *clk) +int omap2_clk_apll54_enable(struct clk_hw *hw) { return omap2xxx_cm_apll54_enable(); } -static void _apll96_allow_idle(struct clk *clk) +static void _apll96_allow_idle(struct clk_hw_omap *clk) { omap2xxx_cm_set_apll96_auto_low_power_stop(); } -static void _apll96_deny_idle(struct clk *clk) +static void _apll96_deny_idle(struct clk_hw_omap *clk) { omap2xxx_cm_set_apll96_disable_autoidle(); } -static void _apll54_allow_idle(struct clk *clk) +static void _apll54_allow_idle(struct clk_hw_omap *clk) { omap2xxx_cm_set_apll54_auto_low_power_stop(); } -static void _apll54_deny_idle(struct clk *clk) +static void _apll54_deny_idle(struct clk_hw_omap *clk) { omap2xxx_cm_set_apll54_disable_autoidle(); } -static void _apll96_disable(struct clk *clk) +void omap2_clk_apll96_disable(struct clk_hw *hw) { omap2xxx_cm_apll96_disable(); } -static void _apll54_disable(struct clk *clk) +void omap2_clk_apll54_disable(struct clk_hw *hw) { omap2xxx_cm_apll54_disable(); } -/* Public data */ +unsigned long omap2_clk_apll54_recalc(struct clk_hw *hw, + unsigned long parent_rate) +{ + return (omap2xxx_clk_apll_locked(hw)) ? 54000000 : 0; +} -const struct clkops clkops_apll96 = { - .enable = _apll96_enable, - .disable = _apll96_disable, - .allow_idle = _apll96_allow_idle, - .deny_idle = _apll96_deny_idle, -}; +unsigned long omap2_clk_apll96_recalc(struct clk_hw *hw, + unsigned long parent_rate) +{ + return (omap2xxx_clk_apll_locked(hw)) ? 96000000 : 0; +} -const struct clkops clkops_apll54 = { - .enable = _apll54_enable, - .disable = _apll54_disable, +/* Public data */ +const struct clk_hw_omap_ops clkhwops_apll54 = { .allow_idle = _apll54_allow_idle, .deny_idle = _apll54_deny_idle, }; +const struct clk_hw_omap_ops clkhwops_apll96 = { + .allow_idle = _apll96_allow_idle, + .deny_idle = _apll96_deny_idle, +}; + /* Public functions */ u32 omap2xxx_get_apll_clkin(void) |