diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/mach-omap1/clock.c | 32 | ||||
| -rw-r--r-- | arch/arm/mach-omap1/clock.h | 10 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/clock.c | 17 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/clock.h | 4 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/clock24xx.c | 20 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/clock24xx.h | 10 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/clock34xx.c | 12 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/clock34xx.h | 4 | ||||
| -rw-r--r-- | arch/arm/plat-omap/clock.c | 15 | ||||
| -rw-r--r-- | arch/arm/plat-omap/include/mach/clock.h | 4 |
10 files changed, 60 insertions, 68 deletions
diff --git a/arch/arm/mach-omap1/clock.c b/arch/arm/mach-omap1/clock.c index ccf989f4aa7d..dafe4f71d15f 100644 --- a/arch/arm/mach-omap1/clock.c +++ b/arch/arm/mach-omap1/clock.c @@ -156,27 +156,25 @@ __u32 arm_idlect1_mask; * Omap1 specific clock functions *-------------------------------------------------------------------------*/ -static void omap1_watchdog_recalc(struct clk * clk) +static unsigned long omap1_watchdog_recalc(struct clk *clk) { - clk->rate = clk->parent->rate / 14; + return clk->parent->rate / 14; } -static void omap1_uart_recalc(struct clk * clk) +static unsigned long omap1_uart_recalc(struct clk *clk) { unsigned int val = __raw_readl(clk->enable_reg); - if (val & clk->enable_bit) - clk->rate = 48000000; - else - clk->rate = 12000000; + return val & clk->enable_bit ? 48000000 : 12000000; } -static void omap1_sossi_recalc(struct clk *clk) +static unsigned long omap1_sossi_recalc(struct clk *clk) { u32 div = omap_readl(MOD_CONF_CTRL_1); div = (div >> 17) & 0x7; div++; - clk->rate = clk->parent->rate / div; + + return clk->parent->rate / div; } static int omap1_clk_enable_dsp_domain(struct clk *clk) @@ -344,19 +342,15 @@ static int calc_dsor_exp(struct clk *clk, unsigned long rate) return dsor_exp; } -static void omap1_ckctl_recalc(struct clk * clk) +static unsigned long omap1_ckctl_recalc(struct clk *clk) { - int dsor; - /* Calculate divisor encoded as 2-bit exponent */ - dsor = 1 << (3 & (omap_readw(ARM_CKCTL) >> clk->rate_offset)); + int dsor = 1 << (3 & (omap_readw(ARM_CKCTL) >> clk->rate_offset)); - if (unlikely(clk->rate == clk->parent->rate / dsor)) - return; /* No change, quick exit */ - clk->rate = clk->parent->rate / dsor; + return clk->parent->rate / dsor; } -static void omap1_ckctl_recalc_dsp_domain(struct clk * clk) +static unsigned long omap1_ckctl_recalc_dsp_domain(struct clk *clk) { int dsor; @@ -371,9 +365,7 @@ static void omap1_ckctl_recalc_dsp_domain(struct clk * clk) dsor = 1 << (3 & (__raw_readw(DSP_CKCTL) >> clk->rate_offset)); omap1_clk_disable(&api_ck.clk); - if (unlikely(clk->rate == clk->parent->rate / dsor)) - return; /* No change, quick exit */ - clk->rate = clk->parent->rate / dsor; + return clk->parent->rate / dsor; } /* MPU virtual clock functions */ diff --git a/arch/arm/mach-omap1/clock.h b/arch/arm/mach-omap1/clock.h index 28bc74e93e8d..17f874271255 100644 --- a/arch/arm/mach-omap1/clock.h +++ b/arch/arm/mach-omap1/clock.h @@ -13,14 +13,14 @@ #ifndef __ARCH_ARM_MACH_OMAP1_CLOCK_H #define __ARCH_ARM_MACH_OMAP1_CLOCK_H -static void omap1_ckctl_recalc(struct clk * clk); -static void omap1_watchdog_recalc(struct clk * clk); +static unsigned long omap1_ckctl_recalc(struct clk *clk); +static unsigned long omap1_watchdog_recalc(struct clk *clk); static int omap1_set_sossi_rate(struct clk *clk, unsigned long rate); -static void omap1_sossi_recalc(struct clk *clk); -static void omap1_ckctl_recalc_dsp_domain(struct clk * clk); +static unsigned long omap1_sossi_recalc(struct clk *clk); +static unsigned long omap1_ckctl_recalc_dsp_domain(struct clk *clk); static int omap1_clk_set_rate_dsp_domain(struct clk * clk, unsigned long rate); static int omap1_set_uart_rate(struct clk * clk, unsigned long rate); -static void omap1_uart_recalc(struct clk * clk); +static unsigned long omap1_uart_recalc(struct clk *clk); static int omap1_set_ext_clk_rate(struct clk * clk, unsigned long rate); static long omap1_round_ext_clk_rate(struct clk * clk, unsigned long rate); static void omap1_init_ext_clk(struct clk * clk); diff --git a/arch/arm/mach-omap2/clock.c b/arch/arm/mach-omap2/clock.c index 1b40d757500d..5020cb1f2e7e 100644 --- a/arch/arm/mach-omap2/clock.c +++ b/arch/arm/mach-omap2/clock.c @@ -239,11 +239,11 @@ u32 omap2_get_dpll_rate(struct clk *clk) * Used for clocks that have the same value as the parent clock, * divided by some factor */ -void omap2_fixed_divisor_recalc(struct clk *clk) +unsigned long omap2_fixed_divisor_recalc(struct clk *clk) { WARN_ON(!clk->fixed_div); - clk->rate = clk->parent->rate / clk->fixed_div; + return clk->parent->rate / clk->fixed_div; } /** @@ -449,21 +449,22 @@ err: * Used for clocks that are part of CLKSEL_xyz governed clocks. * REVISIT: Maybe change to use clk->enable() functions like on omap1? */ -void omap2_clksel_recalc(struct clk *clk) +unsigned long omap2_clksel_recalc(struct clk *clk) { + unsigned long rate; u32 div = 0; pr_debug("clock: recalc'ing clksel clk %s\n", clk->name); div = omap2_clksel_get_divisor(clk); if (div == 0) - return; + return clk->rate; - if (clk->rate == (clk->parent->rate / div)) - return; - clk->rate = clk->parent->rate / div; + rate = clk->parent->rate / div; + + pr_debug("clock: new clock rate is %ld (div %d)\n", rate, div); - pr_debug("clock: new clock rate is %ld (div %d)\n", clk->rate, div); + return rate; } /** diff --git a/arch/arm/mach-omap2/clock.h b/arch/arm/mach-omap2/clock.h index 90077f0df78d..ca6bf226859e 100644 --- a/arch/arm/mach-omap2/clock.h +++ b/arch/arm/mach-omap2/clock.h @@ -36,7 +36,7 @@ void omap2_clk_disable_unused(struct clk *clk); #define omap2_clk_disable_unused NULL #endif -void omap2_clksel_recalc(struct clk *clk); +unsigned long omap2_clksel_recalc(struct clk *clk); void omap2_init_clk_clkdm(struct clk *clk); void omap2_init_clksel_parent(struct clk *clk); u32 omap2_clksel_get_divisor(struct clk *clk); @@ -44,7 +44,7 @@ u32 omap2_clksel_round_rate_div(struct clk *clk, unsigned long target_rate, u32 *new_div); u32 omap2_clksel_to_divisor(struct clk *clk, u32 field_val); u32 omap2_divisor_to_clksel(struct clk *clk, u32 div); -void omap2_fixed_divisor_recalc(struct clk *clk); +unsigned long omap2_fixed_divisor_recalc(struct clk *clk); long omap2_clksel_round_rate(struct clk *clk, unsigned long target_rate); int omap2_clksel_set_rate(struct clk *clk, unsigned long rate); u32 omap2_get_dpll_rate(struct clk *clk); diff --git a/arch/arm/mach-omap2/clock24xx.c b/arch/arm/mach-omap2/clock24xx.c index 069f3e1827a6..f2b74e9b7d8d 100644 --- a/arch/arm/mach-omap2/clock24xx.c +++ b/arch/arm/mach-omap2/clock24xx.c @@ -369,9 +369,9 @@ static long omap2_dpllcore_round_rate(unsigned long target_rate) } -static void omap2_dpllcore_recalc(struct clk *clk) +static unsigned long omap2_dpllcore_recalc(struct clk *clk) { - clk->rate = omap2_get_dpll_rate_24xx(clk); + return omap2_get_dpll_rate_24xx(clk); } static int omap2_reprogram_dpllcore(struct clk *clk, unsigned long rate) @@ -448,9 +448,9 @@ static int omap2_reprogram_dpllcore(struct clk *clk, unsigned long rate) * * Set virt_prcm_set's rate to the mpu_speed field of the current PRCM set. */ -static void omap2_table_mpu_recalc(struct clk *clk) +static unsigned long omap2_table_mpu_recalc(struct clk *clk) { - clk->rate = curr_prcm_set->mpu_speed; + return curr_prcm_set->mpu_speed; } /* @@ -647,14 +647,14 @@ static u32 omap2_get_sysclkdiv(void) return div; } -static void omap2_osc_clk_recalc(struct clk *clk) +static unsigned long omap2_osc_clk_recalc(struct clk *clk) { - clk->rate = omap2_get_apll_clkin() * omap2_get_sysclkdiv(); + return omap2_get_apll_clkin() * omap2_get_sysclkdiv(); } -static void omap2_sys_clk_recalc(struct clk *clk) +static unsigned long omap2_sys_clk_recalc(struct clk *clk) { - clk->rate = clk->parent->rate / omap2_get_sysclkdiv(); + return clk->parent->rate / omap2_get_sysclkdiv(); } /* @@ -707,9 +707,9 @@ int __init omap2_clk_init(void) clk_init(&omap2_clk_functions); - omap2_osc_clk_recalc(&osc_ck); + osc_ck.rate = omap2_osc_clk_recalc(&osc_ck); propagate_rate(&osc_ck); - omap2_sys_clk_recalc(&sys_ck); + sys_ck.rate = omap2_sys_clk_recalc(&sys_ck); propagate_rate(&sys_ck); for (c = omap24xx_clks; c < omap24xx_clks + ARRAY_SIZE(omap24xx_clks); c++) diff --git a/arch/arm/mach-omap2/clock24xx.h b/arch/arm/mach-omap2/clock24xx.h index 759489822ee9..11da6215392b 100644 --- a/arch/arm/mach-omap2/clock24xx.h +++ b/arch/arm/mach-omap2/clock24xx.h @@ -24,13 +24,13 @@ #include "cm-regbits-24xx.h" #include "sdrc.h" -static void omap2_table_mpu_recalc(struct clk *clk); +static unsigned long omap2_table_mpu_recalc(struct clk *clk); static int omap2_select_table_rate(struct clk *clk, unsigned long rate); static long omap2_round_to_table_rate(struct clk *clk, unsigned long rate); -static void omap2_sys_clk_recalc(struct clk *clk); -static void omap2_osc_clk_recalc(struct clk *clk); -static void omap2_sys_clk_recalc(struct clk *clk); -static void omap2_dpllcore_recalc(struct clk *clk); +static unsigned long omap2_sys_clk_recalc(struct clk *clk); +static unsigned long omap2_osc_clk_recalc(struct clk *clk); +static unsigned long omap2_sys_clk_recalc(struct clk *clk); +static unsigned long omap2_dpllcore_recalc(struct clk *clk); static int omap2_reprogram_dpllcore(struct clk *clk, unsigned long rate); /* Key dividers which make up a PRCM set. Ratio's for a PRCM are mandated. diff --git a/arch/arm/mach-omap2/clock34xx.c b/arch/arm/mach-omap2/clock34xx.c index 3b6e27bc9fe3..fb0f53b96811 100644 --- a/arch/arm/mach-omap2/clock34xx.c +++ b/arch/arm/mach-omap2/clock34xx.c @@ -289,9 +289,9 @@ static struct omap_clk omap34xx_clks[] = { * * Recalculate and propagate the DPLL rate. */ -static void omap3_dpll_recalc(struct clk *clk) +static unsigned long omap3_dpll_recalc(struct clk *clk) { - clk->rate = omap2_get_dpll_rate(clk); + return omap2_get_dpll_rate(clk); } /* _omap3_dpll_write_clken - write clken_bits arg to a DPLL's enable bits */ @@ -787,9 +787,10 @@ static void omap3_dpll_deny_idle(struct clk *clk) * Using parent clock DPLL data, look up DPLL state. If locked, set our * rate to the dpll_clk * 2; otherwise, just use dpll_clk. */ -static void omap3_clkoutx2_recalc(struct clk *clk) +static unsigned long omap3_clkoutx2_recalc(struct clk *clk) { const struct dpll_data *dd; + unsigned long rate; u32 v; struct clk *pclk; @@ -808,9 +809,10 @@ static void omap3_clkoutx2_recalc(struct clk *clk) v = __raw_readl(dd->control_reg) & dd->enable_mask; v >>= __ffs(dd->enable_mask); if (v != DPLL_LOCKED) - clk->rate = clk->parent->rate; + rate = clk->parent->rate; else - clk->rate = clk->parent->rate * 2; + rate = clk->parent->rate * 2; + return rate; } /* Common clock code */ diff --git a/arch/arm/mach-omap2/clock34xx.h b/arch/arm/mach-omap2/clock34xx.h index 2138a58f6346..764c7cd9fd84 100644 --- a/arch/arm/mach-omap2/clock34xx.h +++ b/arch/arm/mach-omap2/clock34xx.h @@ -27,8 +27,8 @@ #include "prm.h" #include "prm-regbits-34xx.h" -static void omap3_dpll_recalc(struct clk *clk); -static void omap3_clkoutx2_recalc(struct clk *clk); +static unsigned long omap3_dpll_recalc(struct clk *clk); +static unsigned long omap3_clkoutx2_recalc(struct clk *clk); static void omap3_dpll_allow_idle(struct clk *clk); static void omap3_dpll_deny_idle(struct clk *clk); static u32 omap3_dpll_autoidle_read(struct clk *clk); diff --git a/arch/arm/plat-omap/clock.c b/arch/arm/plat-omap/clock.c index 9833d73511a1..08baa18497b2 100644 --- a/arch/arm/plat-omap/clock.c +++ b/arch/arm/plat-omap/clock.c @@ -126,7 +126,7 @@ int clk_set_rate(struct clk *clk, unsigned long rate) ret = arch_clock->clk_set_rate(clk, rate); if (ret == 0) { if (clk->recalc) - clk->recalc(clk); + clk->rate = clk->recalc(clk); propagate_rate(clk); } spin_unlock_irqrestore(&clockfw_lock, flags); @@ -148,7 +148,7 @@ int clk_set_parent(struct clk *clk, struct clk *parent) ret = arch_clock->clk_set_parent(clk, parent); if (ret == 0) { if (clk->recalc) - clk->recalc(clk); + clk->rate = clk->recalc(clk); propagate_rate(clk); } spin_unlock_irqrestore(&clockfw_lock, flags); @@ -188,12 +188,9 @@ static int __init omap_clk_setup(char *str) __setup("mpurate=", omap_clk_setup); /* Used for clocks that always have same value as the parent clock */ -void followparent_recalc(struct clk *clk) +unsigned long followparent_recalc(struct clk *clk) { - if (clk == NULL || IS_ERR(clk)) - return; - - clk->rate = clk->parent->rate; + return clk->parent->rate; } void clk_reparent(struct clk *child, struct clk *parent) @@ -214,7 +211,7 @@ void propagate_rate(struct clk * tclk) list_for_each_entry(clkp, &tclk->children, sibling) { if (clkp->recalc) - clkp->recalc(clkp); + clkp->rate = clkp->recalc(clkp); propagate_rate(clkp); } } @@ -234,7 +231,7 @@ void recalculate_root_clocks(void) list_for_each_entry(clkp, &root_clks, sibling) { if (clkp->recalc) - clkp->recalc(clkp); + clkp->rate = clkp->recalc(clkp); propagate_rate(clkp); } } diff --git a/arch/arm/plat-omap/include/mach/clock.h b/arch/arm/plat-omap/include/mach/clock.h index 0ba28462a497..7b6f6bcbff94 100644 --- a/arch/arm/plat-omap/include/mach/clock.h +++ b/arch/arm/plat-omap/include/mach/clock.h @@ -75,7 +75,7 @@ struct clk { unsigned long rate; __u32 flags; void __iomem *enable_reg; - void (*recalc)(struct clk *); + unsigned long (*recalc)(struct clk *); int (*set_rate)(struct clk *, unsigned long); long (*round_rate)(struct clk *, unsigned long); void (*init)(struct clk *); @@ -123,7 +123,7 @@ extern void clk_reparent(struct clk *child, struct clk *parent); extern void clk_unregister(struct clk *clk); extern void propagate_rate(struct clk *clk); extern void recalculate_root_clocks(void); -extern void followparent_recalc(struct clk *clk); +extern unsigned long followparent_recalc(struct clk *clk); extern void clk_enable_init_clocks(void); #ifdef CONFIG_CPU_FREQ extern void clk_init_cpufreq_table(struct cpufreq_frequency_table **table); |
