diff options
author | Jiancheng Xue <xuejiancheng@hisilicon.com> | 2016-06-15 14:26:35 +0800 |
---|---|---|
committer | Stephen Boyd <sboyd@codeaurora.org> | 2016-06-30 12:34:19 -0700 |
commit | 322269163a36ac73be403120e046d90d6a1d38f1 (patch) | |
tree | c93a4b973c453b78fc22cd5c1837ff2ba271895b /drivers | |
parent | 97b7129cd2afb478c4812781470f06d65f458825 (diff) | |
download | linux-rt-322269163a36ac73be403120e046d90d6a1d38f1.tar.gz |
clk: hisilicon: add hisi_clk_alloc function.
Before, there was an ordering issue that the clock provider
had been published in hisi_clk_init before it could provide
valid clocks to consumers. hisi_clk_alloc is just used to
allocate memory space for struct hisi_clock_data. It makes
it possible to publish the provider after the clocks are ready.
Signed-off-by: Jiancheng Xue <xuejiancheng@hisilicon.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/clk/hisilicon/clk.c | 29 | ||||
-rw-r--r-- | drivers/clk/hisilicon/clk.h | 3 |
2 files changed, 32 insertions, 0 deletions
diff --git a/drivers/clk/hisilicon/clk.c b/drivers/clk/hisilicon/clk.c index 9b15adbfc30c..78675d172a65 100644 --- a/drivers/clk/hisilicon/clk.c +++ b/drivers/clk/hisilicon/clk.c @@ -37,6 +37,35 @@ static DEFINE_SPINLOCK(hisi_clk_lock); +struct hisi_clock_data *hisi_clk_alloc(struct platform_device *pdev, + int nr_clks) +{ + struct hisi_clock_data *clk_data; + struct resource *res; + struct clk **clk_table; + + clk_data = devm_kmalloc(&pdev->dev, sizeof(*clk_data), GFP_KERNEL); + if (!clk_data) + return NULL; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + clk_data->base = devm_ioremap(&pdev->dev, + res->start, resource_size(res)); + if (!clk_data->base) + return NULL; + + clk_table = devm_kmalloc(&pdev->dev, sizeof(struct clk *) * nr_clks, + GFP_KERNEL); + if (!clk_table) + return NULL; + + clk_data->clk_data.clks = clk_table; + clk_data->clk_data.clk_num = nr_clks; + + return clk_data; +} +EXPORT_SYMBOL_GPL(hisi_clk_alloc); + struct hisi_clock_data *hisi_clk_init(struct device_node *np, int nr_clks) { diff --git a/drivers/clk/hisilicon/clk.h b/drivers/clk/hisilicon/clk.h index 20d64afe4ad8..5fc644f4799f 100644 --- a/drivers/clk/hisilicon/clk.h +++ b/drivers/clk/hisilicon/clk.h @@ -30,6 +30,8 @@ #include <linux/io.h> #include <linux/spinlock.h> +struct platform_device; + struct hisi_clock_data { struct clk_onecell_data clk_data; void __iomem *base; @@ -110,6 +112,7 @@ struct clk *hi6220_register_clkdiv(struct device *dev, const char *name, const char *parent_name, unsigned long flags, void __iomem *reg, u8 shift, u8 width, u32 mask_bit, spinlock_t *lock); +struct hisi_clock_data *hisi_clk_alloc(struct platform_device *, int); struct hisi_clock_data *hisi_clk_init(struct device_node *, int); void hisi_clk_register_fixed_rate(const struct hisi_fixed_rate_clock *, int, struct hisi_clock_data *); |