diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/sh/include/asm/clock.h | 13 | ||||
| -rw-r--r-- | arch/sh/kernel/cpu/clock-cpg.c | 35 |
2 files changed, 48 insertions, 0 deletions
diff --git a/arch/sh/include/asm/clock.h b/arch/sh/include/asm/clock.h index aa9480d4aa0..f43d3e72d26 100644 --- a/arch/sh/include/asm/clock.h +++ b/arch/sh/include/asm/clock.h @@ -117,4 +117,17 @@ long clk_rate_table_round(struct clk *clk, struct cpufreq_frequency_table *freq_table, unsigned long rate); +#define SH_CLK_MSTP32(_name, _id, _parent, _enable_reg, \ + _enable_bit, _flags) \ +{ \ + .name = _name, \ + .id = _id, \ + .parent = _parent, \ + .enable_reg = (void __iomem *)_enable_reg, \ + .enable_bit = _enable_bit, \ + .flags = _flags, \ +} + +int sh_clk_mstp32_register(struct clk *clks, int nr); + #endif /* __ASM_SH_CLOCK_H */ diff --git a/arch/sh/kernel/cpu/clock-cpg.c b/arch/sh/kernel/cpu/clock-cpg.c index b78c237ab36..72228d2945a 100644 --- a/arch/sh/kernel/cpu/clock-cpg.c +++ b/arch/sh/kernel/cpu/clock-cpg.c @@ -1,7 +1,42 @@ #include <linux/clk.h> #include <linux/compiler.h> +#include <linux/io.h> #include <asm/clock.h> +static int sh_clk_mstp32_enable(struct clk *clk) +{ + __raw_writel(__raw_readl(clk->enable_reg) & ~(1 << clk->enable_bit), + clk->enable_reg); + return 0; +} + +static void sh_clk_mstp32_disable(struct clk *clk) +{ + __raw_writel(__raw_readl(clk->enable_reg) | (1 << clk->enable_bit), + clk->enable_reg); +} + +static struct clk_ops sh_clk_mstp32_clk_ops = { + .enable = sh_clk_mstp32_enable, + .disable = sh_clk_mstp32_disable, + .recalc = followparent_recalc, +}; + +int __init sh_clk_mstp32_register(struct clk *clks, int nr) +{ + struct clk *clkp; + int ret = 0; + int k; + + for (k = 0; !ret && (k < nr); k++) { + clkp = clks + k; + clkp->ops = &sh_clk_mstp32_clk_ops; + ret |= clk_register(clkp); + } + + return ret; +} + #ifdef CONFIG_SH_CLK_CPG_LEGACY static struct clk master_clk = { .name = "master_clk", |