diff options
Diffstat (limited to 'drivers/clk/ti/clk.c')
-rw-r--r-- | drivers/clk/ti/clk.c | 125 |
1 files changed, 125 insertions, 0 deletions
diff --git a/drivers/clk/ti/clk.c b/drivers/clk/ti/clk.c index 337abe5..546dae4 100644 --- a/drivers/clk/ti/clk.c +++ b/drivers/clk/ti/clk.c @@ -22,6 +22,8 @@ #include <linux/of_address.h> #include <linux/list.h> +#include "clock.h" + #undef pr_fmt #define pr_fmt(fmt) "%s: " fmt, __func__ @@ -183,3 +185,126 @@ void ti_dt_clk_init_retry_clks(void) retries--; } } + +void __init ti_clk_patch_legacy_clks(struct ti_clk **patch) +{ + while (*patch) { + memcpy((*patch)->patch, *patch, sizeof(**patch)); + patch++; + } +} + +struct clk __init *ti_clk_register_clk(struct ti_clk *setup) +{ + struct clk *clk; + struct ti_clk_fixed *fixed; + struct ti_clk_fixed_factor *fixed_factor; + struct clk_hw *clk_hw; + + if (setup->clk) + return setup->clk; + + switch (setup->type) { + case TI_CLK_FIXED: + fixed = setup->data; + + clk = clk_register_fixed_rate(NULL, setup->name, NULL, + CLK_IS_ROOT, fixed->frequency); + break; + case TI_CLK_MUX: + clk = ti_clk_register_mux(setup); + break; + case TI_CLK_DIVIDER: + clk = ti_clk_register_divider(setup); + break; + case TI_CLK_COMPOSITE: + clk = ti_clk_register_composite(setup); + break; + case TI_CLK_FIXED_FACTOR: + fixed_factor = setup->data; + + clk = clk_register_fixed_factor(NULL, setup->name, + fixed_factor->parent, + 0, fixed_factor->mult, + fixed_factor->div); + break; + case TI_CLK_GATE: + clk = ti_clk_register_gate(setup); + break; + case TI_CLK_DPLL: + clk = ti_clk_register_dpll(setup); + break; + default: + pr_err("bad type for %s!\n", setup->name); + clk = ERR_PTR(-EINVAL); + } + + if (!IS_ERR(clk)) { + setup->clk = clk; + if (setup->clkdm_name) { + if (__clk_get_flags(clk) & CLK_IS_BASIC) { + pr_warn("can't setup clkdm for basic clk %s\n", + setup->name); + } else { + clk_hw = __clk_get_hw(clk); + to_clk_hw_omap(clk_hw)->clkdm_name = + setup->clkdm_name; + omap2_init_clk_clkdm(clk_hw); + } + } + } + + return clk; +} + +int __init ti_clk_register_legacy_clks(struct ti_clk_alias *clks) +{ + struct clk *clk; + bool retry; + struct ti_clk_alias *retry_clk; + struct ti_clk_alias *tmp; + + while (clks->clk) { + clk = ti_clk_register_clk(clks->clk); + if (IS_ERR(clk)) { + if (PTR_ERR(clk) == -EAGAIN) { + list_add(&clks->link, &retry_list); + } else { + pr_err("register for %s failed: %ld\n", + clks->clk->name, PTR_ERR(clk)); + return PTR_ERR(clk); + } + } else { + clks->lk.clk = clk; + clkdev_add(&clks->lk); + } + clks++; + } + + retry = true; + + while (!list_empty(&retry_list) && retry) { + retry = false; + list_for_each_entry_safe(retry_clk, tmp, &retry_list, link) { + pr_debug("retry-init: %s\n", retry_clk->clk->name); + clk = ti_clk_register_clk(retry_clk->clk); + if (IS_ERR(clk)) { + if (PTR_ERR(clk) == -EAGAIN) { + continue; + } else { + pr_err("register for %s failed: %ld\n", + retry_clk->clk->name, + PTR_ERR(clk)); + return PTR_ERR(clk); + } + } else { + retry = true; + retry_clk->lk.clk = clk; + clkdev_add(&retry_clk->lk); + list_del(&retry_clk->link); + } + } + } + + return 0; +} |