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authorOlof Johansson <olof@lixom.net>2012-11-30 06:49:30 (GMT)
committerOlof Johansson <olof@lixom.net>2012-11-30 06:49:30 (GMT)
commit9121dfca73d81fa886f15610cac2bf372391f3eb (patch)
tree9aff09bb821f632ea6b7a1117c094d662eb2ecd3 /arch/arm/mach-omap2/clkt2xxx_apll.c
parent77f9db89c928773e5fb1df0df4d13d5cc8abd178 (diff)
parent8b9c1ac2e11a9fb3a5a8860fb7570ff7633aa7f7 (diff)
downloadlinux-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.c62
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)