diff options
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/mach-omap2/dpll3xxx.c | 23 |
1 files changed, 18 insertions, 5 deletions
diff --git a/arch/arm/mach-omap2/dpll3xxx.c b/arch/arm/mach-omap2/dpll3xxx.c index fc56745676fa..f0f10beeffe8 100644 --- a/arch/arm/mach-omap2/dpll3xxx.c +++ b/arch/arm/mach-omap2/dpll3xxx.c @@ -142,7 +142,8 @@ static int _omap3_noncore_dpll_lock(struct clk *clk) ai = omap3_dpll_autoidle_read(clk); - omap3_dpll_deny_idle(clk); + if (ai) + omap3_dpll_deny_idle(clk); _omap3_dpll_write_clken(clk, DPLL_LOCKED); @@ -186,8 +187,6 @@ static int _omap3_noncore_dpll_bypass(struct clk *clk) if (ai) omap3_dpll_allow_idle(clk); - else - omap3_dpll_deny_idle(clk); return r; } @@ -216,8 +215,6 @@ static int _omap3_noncore_dpll_stop(struct clk *clk) if (ai) omap3_dpll_allow_idle(clk); - else - omap3_dpll_deny_idle(clk); return 0; } @@ -519,6 +516,9 @@ u32 omap3_dpll_autoidle_read(struct clk *clk) dd = clk->dpll_data; + if (!dd->autoidle_reg) + return -EINVAL; + v = __raw_readl(dd->autoidle_reg); v &= dd->autoidle_mask; v >>= __ffs(dd->autoidle_mask); @@ -545,6 +545,12 @@ void omap3_dpll_allow_idle(struct clk *clk) dd = clk->dpll_data; + if (!dd->autoidle_reg) { + pr_debug("clock: DPLL %s: autoidle not supported\n", + clk->name); + return; + } + /* * REVISIT: CORE DPLL can optionally enter low-power bypass * by writing 0x5 instead of 0x1. Add some mechanism to @@ -554,6 +560,7 @@ void omap3_dpll_allow_idle(struct clk *clk) v &= ~dd->autoidle_mask; v |= DPLL_AUTOIDLE_LOW_POWER_STOP << __ffs(dd->autoidle_mask); __raw_writel(v, dd->autoidle_reg); + } /** @@ -572,6 +579,12 @@ void omap3_dpll_deny_idle(struct clk *clk) dd = clk->dpll_data; + if (!dd->autoidle_reg) { + pr_debug("clock: DPLL %s: autoidle not supported\n", + clk->name); + return; + } + v = __raw_readl(dd->autoidle_reg); v &= ~dd->autoidle_mask; v |= DPLL_AUTOIDLE_DISABLE << __ffs(dd->autoidle_mask); |