diff options
Diffstat (limited to 'arch/mips/ath79/clock.c')
| -rw-r--r-- | arch/mips/ath79/clock.c | 123 |
1 files changed, 52 insertions, 71 deletions
diff --git a/arch/mips/ath79/clock.c b/arch/mips/ath79/clock.c index 375cb77e7639..26479f437675 100644 --- a/arch/mips/ath79/clock.c +++ b/arch/mips/ath79/clock.c @@ -16,6 +16,7 @@ #include <linux/init.h> #include <linux/err.h> #include <linux/clk.h> +#include <linux/clkdev.h> #include <asm/div64.h> @@ -31,12 +32,21 @@ struct clk { unsigned long rate; }; -static struct clk ath79_ref_clk; -static struct clk ath79_cpu_clk; -static struct clk ath79_ddr_clk; -static struct clk ath79_ahb_clk; -static struct clk ath79_wdt_clk; -static struct clk ath79_uart_clk; +static void __init ath79_add_sys_clkdev(const char *id, unsigned long rate) +{ + struct clk *clk; + int err; + + clk = kzalloc(sizeof(*clk), GFP_KERNEL); + if (!clk) + panic("failed to allocate %s clock structure", id); + + clk->rate = rate; + + err = clk_register_clkdev(clk, id, NULL); + if (err) + panic("unable to register %s clock device", id); +} static void __init ar71xx_clocks_init(void) { @@ -64,13 +74,13 @@ static void __init ar71xx_clocks_init(void) div = (((pll >> AR71XX_AHB_DIV_SHIFT) & AR71XX_AHB_DIV_MASK) + 1) * 2; ahb_rate = cpu_rate / div; - ath79_ref_clk.rate = ref_rate; - ath79_cpu_clk.rate = cpu_rate; - ath79_ddr_clk.rate = ddr_rate; - ath79_ahb_clk.rate = ahb_rate; + ath79_add_sys_clkdev("ref", ref_rate); + ath79_add_sys_clkdev("cpu", cpu_rate); + ath79_add_sys_clkdev("ddr", ddr_rate); + ath79_add_sys_clkdev("ahb", ahb_rate); - ath79_wdt_clk.rate = ath79_ahb_clk.rate; - ath79_uart_clk.rate = ath79_ahb_clk.rate; + clk_add_alias("wdt", NULL, "ahb", NULL); + clk_add_alias("uart", NULL, "ahb", NULL); } static void __init ar724x_clocks_init(void) @@ -100,13 +110,13 @@ static void __init ar724x_clocks_init(void) div = (((pll >> AR724X_AHB_DIV_SHIFT) & AR724X_AHB_DIV_MASK) + 1) * 2; ahb_rate = cpu_rate / div; - ath79_ref_clk.rate = ref_rate; - ath79_cpu_clk.rate = cpu_rate; - ath79_ddr_clk.rate = ddr_rate; - ath79_ahb_clk.rate = ahb_rate; + ath79_add_sys_clkdev("ref", ref_rate); + ath79_add_sys_clkdev("cpu", cpu_rate); + ath79_add_sys_clkdev("ddr", ddr_rate); + ath79_add_sys_clkdev("ahb", ahb_rate); - ath79_wdt_clk.rate = ath79_ahb_clk.rate; - ath79_uart_clk.rate = ath79_ahb_clk.rate; + clk_add_alias("wdt", NULL, "ahb", NULL); + clk_add_alias("uart", NULL, "ahb", NULL); } static void __init ar913x_clocks_init(void) @@ -133,13 +143,13 @@ static void __init ar913x_clocks_init(void) div = (((pll >> AR913X_AHB_DIV_SHIFT) & AR913X_AHB_DIV_MASK) + 1) * 2; ahb_rate = cpu_rate / div; - ath79_ref_clk.rate = ref_rate; - ath79_cpu_clk.rate = cpu_rate; - ath79_ddr_clk.rate = ddr_rate; - ath79_ahb_clk.rate = ahb_rate; + ath79_add_sys_clkdev("ref", ref_rate); + ath79_add_sys_clkdev("cpu", cpu_rate); + ath79_add_sys_clkdev("ddr", ddr_rate); + ath79_add_sys_clkdev("ahb", ahb_rate); - ath79_wdt_clk.rate = ath79_ahb_clk.rate; - ath79_uart_clk.rate = ath79_ahb_clk.rate; + clk_add_alias("wdt", NULL, "ahb", NULL); + clk_add_alias("uart", NULL, "ahb", NULL); } static void __init ar933x_clocks_init(void) @@ -195,13 +205,13 @@ static void __init ar933x_clocks_init(void) ahb_rate = freq / t; } - ath79_ref_clk.rate = ref_rate; - ath79_cpu_clk.rate = cpu_rate; - ath79_ddr_clk.rate = ddr_rate; - ath79_ahb_clk.rate = ahb_rate; + ath79_add_sys_clkdev("ref", ref_rate); + ath79_add_sys_clkdev("cpu", cpu_rate); + ath79_add_sys_clkdev("ddr", ddr_rate); + ath79_add_sys_clkdev("ahb", ahb_rate); - ath79_wdt_clk.rate = ath79_ahb_clk.rate; - ath79_uart_clk.rate = ath79_ref_clk.rate; + clk_add_alias("wdt", NULL, "ahb", NULL); + clk_add_alias("uart", NULL, "ref", NULL); } static u32 __init ar934x_get_pll_freq(u32 ref, u32 ref_div, u32 nint, u32 nfrac, @@ -329,13 +339,13 @@ static void __init ar934x_clocks_init(void) else ahb_rate = cpu_pll / (postdiv + 1); - ath79_ref_clk.rate = ref_rate; - ath79_cpu_clk.rate = cpu_rate; - ath79_ddr_clk.rate = ddr_rate; - ath79_ahb_clk.rate = ahb_rate; + ath79_add_sys_clkdev("ref", ref_rate); + ath79_add_sys_clkdev("cpu", cpu_rate); + ath79_add_sys_clkdev("ddr", ddr_rate); + ath79_add_sys_clkdev("ahb", ahb_rate); - ath79_wdt_clk.rate = ath79_ref_clk.rate; - ath79_uart_clk.rate = ath79_ref_clk.rate; + clk_add_alias("wdt", NULL, "ref", NULL); + clk_add_alias("uart", NULL, "ref", NULL); iounmap(dpll_base); } @@ -416,13 +426,13 @@ static void __init qca955x_clocks_init(void) else ahb_rate = cpu_pll / (postdiv + 1); - ath79_ref_clk.rate = ref_rate; - ath79_cpu_clk.rate = cpu_rate; - ath79_ddr_clk.rate = ddr_rate; - ath79_ahb_clk.rate = ahb_rate; + ath79_add_sys_clkdev("ref", ref_rate); + ath79_add_sys_clkdev("cpu", cpu_rate); + ath79_add_sys_clkdev("ddr", ddr_rate); + ath79_add_sys_clkdev("ahb", ahb_rate); - ath79_wdt_clk.rate = ath79_ref_clk.rate; - ath79_uart_clk.rate = ath79_ref_clk.rate; + clk_add_alias("wdt", NULL, "ref", NULL); + clk_add_alias("uart", NULL, "ref", NULL); } void __init ath79_clocks_init(void) @@ -462,30 +472,6 @@ ath79_get_sys_clk_rate(const char *id) /* * Linux clock API */ -struct clk *clk_get(struct device *dev, const char *id) -{ - if (!strcmp(id, "ref")) - return &ath79_ref_clk; - - if (!strcmp(id, "cpu")) - return &ath79_cpu_clk; - - if (!strcmp(id, "ddr")) - return &ath79_ddr_clk; - - if (!strcmp(id, "ahb")) - return &ath79_ahb_clk; - - if (!strcmp(id, "wdt")) - return &ath79_wdt_clk; - - if (!strcmp(id, "uart")) - return &ath79_uart_clk; - - return ERR_PTR(-ENOENT); -} -EXPORT_SYMBOL(clk_get); - int clk_enable(struct clk *clk) { return 0; @@ -502,8 +488,3 @@ unsigned long clk_get_rate(struct clk *clk) return clk->rate; } EXPORT_SYMBOL(clk_get_rate); - -void clk_put(struct clk *clk) -{ -} -EXPORT_SYMBOL(clk_put); |