Re: [PATCH v7 1/6] clk: hisilicon: add CRG driver for hi3519 soc
From: Paul Bolle
Date: Mon Jan 25 2016 - 20:17:55 EST
On ma, 2016-01-25 at 11:01 +0800, Jiancheng Xue wrote:
> --- a/drivers/clk/hisilicon/Kconfig
> +++ b/drivers/clk/hisilicon/Kconfig
> +config COMMON_CLK_HI3519
> + bool "Hi3519 Clock Driver"
> + depends on ARCH_HISI
> + default y
> + help
> + Build the clock driver for hi3519.
> --- a/drivers/clk/hisilicon/Makefile
> +++ b/drivers/clk/hisilicon/Makefile
> +obj-$(CONFIG_COMMON_CLK_HI3519) += clk-hi3519.o
If I parsed the above correctly clk-hi3519.o can only be built-in,
right?
> --- /dev/null
> +++ b/drivers/clk/hisilicon/clk-hi3519.c
> +#include <linux/module.h>
So is this include actually needed?
> +static int hi3519_clk_probe(struct platform_device *pdev)
> +{
> + struct device_node *np = pdev->dev.of_node;
> + struct hisi_clock_data *clk_data;
> +
> + clk_data = hisi_clk_init(np, HI3519_NR_CLKS);
> + if (!clk_data)
> + return -ENODEV;
> +
> + hisi_clk_register_fixed_rate(hi3519_fixed_rate_clks,
> +
> ARRAY_SIZE(hi3519_fixed_rate_clks),
> + clk_data);
> + hisi_clk_register_mux(hi3519_mux_clks,
> ARRAY_SIZE(hi3519_mux_clks),
> + clk_data);
> + hisi_clk_register_gate(hi3519_gate_clks,
> + ARRAY_SIZE(hi3519_gate_clks), clk_data);
> +
> + return hisi_reset_init(np);
> +}
(evolution 3.16.5 makes replying to code quite a challenge.)
> +static const struct of_device_id hi3519_clk_match_table[] = {
> + { .compatible = "hisilicon,hi3519-crg" },
> + { }
> +};
> +MODULE_DEVICE_TABLE(of, hi3519_clk_match_table);
Last time I checked MODULE_DEVICE_TABLE is preprocessed away for built
-in code.
> +static void __exit hi3519_clk_exit(void)
> +{
> + platform_driver_unregister(&hi3519_clk_driver);
> +}
> +module_exit(hi3519_clk_exit);
Not needed for built-in only code.
> +MODULE_DESCRIPTION("HiSilicon Hi3519 Clock Driver");
Ditto.
> --- a/drivers/clk/hisilicon/clk.c
> +++ b/drivers/clk/hisilicon/clk.c
> +EXPORT_SYMBOL(hisi_clk_init);
What module uses this export?
> +EXPORT_SYMBOL(hisi_clk_register_fixed_rate);
Ditto.
> +EXPORT_SYMBOL(hisi_clk_register_fixed_factor);
Ditto.
> +EXPORT_SYMBOL(hisi_clk_register_mux);
Ditto.
> +EXPORT_SYMBOL(hisi_clk_register_divider);
Ditto.
> +EXPORT_SYMBOL(hisi_clk_register_gate);
Ditto.
> +EXPORT_SYMBOL(hisi_clk_register_gate_sep);
Ditto.
> --- /dev/null
> +++ b/drivers/clk/hisilicon/reset.c
> +int hisi_reset_init(struct device_node *np)
> +{
> + [...]
> +}
> +EXPORT_SYMBOL(hisi_reset_init);
Ditto.
> --- /dev/null
> +++ b/drivers/clk/hisilicon/reset.h
> +#ifdef CONFIG_RESET_CONTROLLER
> +int hisi_reset_init(struct device_node *np);
> +#else
> +static inline int hisi_reset_init(struct device_node *np)
> +{
> + return 0;
> +}
> +#endif
Thanks,
Paul Bolle