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authorLinus Torvalds <torvalds@linux-foundation.org>2012-12-13 10:58:20 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2012-12-13 10:58:20 -0800
commita11da7df6543b5f71a150b47c0d08ecf0799a0f3 (patch)
tree77eaac99426f64a0a8dc3b5d62c86138a8c72d43 /arch/arm/mach-omap2/clkt_dpll.c
parentb8edf848e9119bab9d999b9ca80d8520641810f2 (diff)
parent9c7466b217af784280d9fc841bbd559ef3bf33e9 (diff)
Merge tag 'pm-merge' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC power management and clock changes from Olof Johansson: "This branch contains a largeish set of updates of power management and clock setup. The bulk of it is for OMAP/AM33xx platforms, but also a few around hotplug/suspend/resume on Exynos. It includes a split-up of some of the OMAP clock data into separate files which adds to the diffstat, but gross delta is fairly reasonable." * tag 'pm-merge' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (60 commits) ARM: OMAP: Move plat-omap/dma-omap.h to include/linux/omap-dma.h ASoC: OMAP: mcbsp fixes for enabling ARM multiplatform support watchdog: OMAP: fixup for ARM multiplatform support ARM: EXYNOS: Add flush_cache_all in suspend finisher ARM: EXYNOS: Remove scu_enable from cpuidle ARM: EXYNOS: Fix soft reboot hang after suspend/resume ARM: EXYNOS: Add support for rtc wakeup ARM: EXYNOS: fix the hotplug for Cortex-A15 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+: voltage: fixup oscillator handling when CONFIG_PM=n ARM: OMAP4: USB: power down MUSB PHY during boot 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 ...
Diffstat (limited to 'arch/arm/mach-omap2/clkt_dpll.c')
-rw-r--r--arch/arm/mach-omap2/clkt_dpll.c28
1 files changed, 15 insertions, 13 deletions
diff --git a/arch/arm/mach-omap2/clkt_dpll.c b/arch/arm/mach-omap2/clkt_dpll.c
index 8463cc35624..924c230f894 100644
--- a/arch/arm/mach-omap2/clkt_dpll.c
+++ b/arch/arm/mach-omap2/clkt_dpll.c
@@ -16,7 +16,7 @@
#include <linux/kernel.h>
#include <linux/errno.h>
-#include <linux/clk.h>
+#include <linux/clk-provider.h>
#include <linux/io.h>
#include <asm/div64.h>
@@ -76,7 +76,7 @@
* (assuming that it is counting N upwards), or -2 if the enclosing loop
* should skip to the next iteration (again assuming N is increasing).
*/
-static int _dpll_test_fint(struct clk *clk, u8 n)
+static int _dpll_test_fint(struct clk_hw_omap *clk, u8 n)
{
struct dpll_data *dd;
long fint, fint_min, fint_max;
@@ -85,7 +85,7 @@ static int _dpll_test_fint(struct clk *clk, u8 n)
dd = clk->dpll_data;
/* DPLL divider must result in a valid jitter correction val */
- fint = __clk_get_rate(__clk_get_parent(clk)) / n;
+ fint = __clk_get_rate(__clk_get_parent(clk->hw.clk)) / n;
if (cpu_is_omap24xx()) {
/* Should not be called for OMAP2, so warn if it is called */
@@ -186,15 +186,15 @@ static int _dpll_test_mult(int *m, int n, unsigned long *new_rate,
}
/* Public functions */
-
-void omap2_init_dpll_parent(struct clk *clk)
+u8 omap2_init_dpll_parent(struct clk_hw *hw)
{
+ struct clk_hw_omap *clk = to_clk_hw_omap(hw);
u32 v;
struct dpll_data *dd;
dd = clk->dpll_data;
if (!dd)
- return;
+ return -EINVAL;
v = __raw_readl(dd->control_reg);
v &= dd->enable_mask;
@@ -204,18 +204,18 @@ void omap2_init_dpll_parent(struct clk *clk)
if (cpu_is_omap24xx()) {
if (v == OMAP2XXX_EN_DPLL_LPBYPASS ||
v == OMAP2XXX_EN_DPLL_FRBYPASS)
- clk_reparent(clk, dd->clk_bypass);
+ return 1;
} else if (cpu_is_omap34xx()) {
if (v == OMAP3XXX_EN_DPLL_LPBYPASS ||
v == OMAP3XXX_EN_DPLL_FRBYPASS)
- clk_reparent(clk, dd->clk_bypass);
+ return 1;
} else if (soc_is_am33xx() || cpu_is_omap44xx()) {
if (v == OMAP4XXX_EN_DPLL_LPBYPASS ||
v == OMAP4XXX_EN_DPLL_FRBYPASS ||
v == OMAP4XXX_EN_DPLL_MNBYPASS)
- clk_reparent(clk, dd->clk_bypass);
+ return 1;
}
- return;
+ return 0;
}
/**
@@ -232,7 +232,7 @@ void omap2_init_dpll_parent(struct clk *clk)
* locked, or the appropriate bypass rate if the DPLL is bypassed, or 0
* if the clock @clk is not a DPLL.
*/
-u32 omap2_get_dpll_rate(struct clk *clk)
+unsigned long omap2_get_dpll_rate(struct clk_hw_omap *clk)
{
long long dpll_clk;
u32 dpll_mult, dpll_div, v;
@@ -288,8 +288,10 @@ u32 omap2_get_dpll_rate(struct clk *clk)
* (expensive) function again. Returns ~0 if the target rate cannot
* be rounded, or the rounded rate upon success.
*/
-long omap2_dpll_round_rate(struct clk *clk, unsigned long target_rate)
+long omap2_dpll_round_rate(struct clk_hw *hw, unsigned long target_rate,
+ unsigned long *parent_rate)
{
+ struct clk_hw_omap *clk = to_clk_hw_omap(hw);
int m, n, r, scaled_max_m;
unsigned long scaled_rt_rp;
unsigned long new_rate = 0;
@@ -303,7 +305,7 @@ long omap2_dpll_round_rate(struct clk *clk, unsigned long target_rate)
dd = clk->dpll_data;
ref_rate = __clk_get_rate(dd->clk_ref);
- clk_name = __clk_get_name(clk);
+ clk_name = __clk_get_name(hw->clk);
pr_debug("clock: %s: starting DPLL round_rate, target rate %ld\n",
clk_name, target_rate);