diff options
Diffstat (limited to 'arch/arm/mach-omap1/clock.c')
-rw-r--r-- | arch/arm/mach-omap1/clock.c | 96 |
1 files changed, 45 insertions, 51 deletions
diff --git a/arch/arm/mach-omap1/clock.c b/arch/arm/mach-omap1/clock.c index be500014dcb..6b17da120e5 100644 --- a/arch/arm/mach-omap1/clock.c +++ b/arch/arm/mach-omap1/clock.c @@ -216,9 +216,6 @@ static int calc_dsor_exp(struct clk *clk, unsigned long rate) struct clk * parent; unsigned dsor_exp; - if (unlikely(!(clk->flags & RATE_CKCTL))) - return -EINVAL; - parent = clk->parent; if (unlikely(parent == NULL)) return -EIO; @@ -307,26 +304,52 @@ static int omap1_select_table_rate(struct clk * clk, unsigned long rate) static int omap1_clk_set_rate_dsp_domain(struct clk *clk, unsigned long rate) { - int ret = -EINVAL; - int dsor_exp; - __u16 regval; - - if (clk->flags & RATE_CKCTL) { - dsor_exp = calc_dsor_exp(clk, rate); - if (dsor_exp > 3) - dsor_exp = -EINVAL; - if (dsor_exp < 0) - return dsor_exp; - - regval = __raw_readw(DSP_CKCTL); - regval &= ~(3 << clk->rate_offset); - regval |= dsor_exp << clk->rate_offset; - __raw_writew(regval, DSP_CKCTL); - clk->rate = clk->parent->rate / (1 << dsor_exp); - ret = 0; - } + int dsor_exp; + u16 regval; - return ret; + dsor_exp = calc_dsor_exp(clk, rate); + if (dsor_exp > 3) + dsor_exp = -EINVAL; + if (dsor_exp < 0) + return dsor_exp; + + regval = __raw_readw(DSP_CKCTL); + regval &= ~(3 << clk->rate_offset); + regval |= dsor_exp << clk->rate_offset; + __raw_writew(regval, DSP_CKCTL); + clk->rate = clk->parent->rate / (1 << dsor_exp); + + return 0; +} + +static long omap1_clk_round_rate_ckctl_arm(struct clk *clk, unsigned long rate) +{ + int dsor_exp = calc_dsor_exp(clk, rate); + if (dsor_exp < 0) + return dsor_exp; + if (dsor_exp > 3) + dsor_exp = 3; + return clk->parent->rate / (1 << dsor_exp); +} + +static int omap1_clk_set_rate_ckctl_arm(struct clk *clk, unsigned long rate) +{ + int dsor_exp; + u16 regval; + + dsor_exp = calc_dsor_exp(clk, rate); + if (dsor_exp > 3) + dsor_exp = -EINVAL; + if (dsor_exp < 0) + return dsor_exp; + + regval = omap_readw(ARM_CKCTL); + regval &= ~(3 << clk->rate_offset); + regval |= dsor_exp << clk->rate_offset; + regval = verify_ckctl_value(regval); + omap_writew(regval, ARM_CKCTL); + clk->rate = clk->parent->rate / (1 << dsor_exp); + return 0; } static long omap1_round_to_table_rate(struct clk * clk, unsigned long rate) @@ -572,20 +595,9 @@ static const struct clkops clkops_generic = { static long omap1_clk_round_rate(struct clk *clk, unsigned long rate) { - int dsor_exp; - if (clk->flags & RATE_FIXED) return clk->rate; - if (clk->flags & RATE_CKCTL) { - dsor_exp = calc_dsor_exp(clk, rate); - if (dsor_exp < 0) - return dsor_exp; - if (dsor_exp > 3) - dsor_exp = 3; - return clk->parent->rate / (1 << dsor_exp); - } - if (clk->round_rate != NULL) return clk->round_rate(clk, rate); @@ -595,27 +607,9 @@ static long omap1_clk_round_rate(struct clk *clk, unsigned long rate) static int omap1_clk_set_rate(struct clk *clk, unsigned long rate) { int ret = -EINVAL; - int dsor_exp; - __u16 regval; if (clk->set_rate) ret = clk->set_rate(clk, rate); - else if (clk->flags & RATE_CKCTL) { - dsor_exp = calc_dsor_exp(clk, rate); - if (dsor_exp > 3) - dsor_exp = -EINVAL; - if (dsor_exp < 0) - return dsor_exp; - - regval = omap_readw(ARM_CKCTL); - regval &= ~(3 << clk->rate_offset); - regval |= dsor_exp << clk->rate_offset; - regval = verify_ckctl_value(regval); - omap_writew(regval, ARM_CKCTL); - clk->rate = clk->parent->rate / (1 << dsor_exp); - ret = 0; - } - return ret; } |