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Date: Sat, 23 Mar 2019 08:59:09 +0200
From: Daniel Baluta <daniel.baluta@...il.com>
To: Abel Vesa <abel.vesa@....com>
Cc: Stephen Boyd <sboyd@...nel.org>, Shawn Guo <shawnguo@...nel.org>,
Fabio Estevam <fabio.estevam@....com>,
Aisheng Dong <aisheng.dong@....com>,
Lucas Stach <l.stach@...gutronix.de>,
Sascha Hauer <kernel@...gutronix.de>,
"linux-clk@...r.kernel.org" <linux-clk@...r.kernel.org>,
"linux-arm-kernel@...ts.infradead.org"
<linux-arm-kernel@...ts.infradead.org>,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
dl-linux-imx <linux-imx@....com>
Subject: Re: [RFC 05/19] clk: imx: clk-busy: Switch to clk_hw based API
On Fri, Mar 22, 2019 at 5:39 PM Abel Vesa <abel.vesa@....com> wrote:
>
> Switch all the clk_busy clock registering functions
> to clk_hw based API.
>
Hi Abel,
The commit message should explain why such a change is needed.
thanks,
Daniel.
> Signed-off-by: Abel Vesa <abel.vesa@....com>
> ---
> drivers/clk/imx/clk-busy.c | 30 ++++++++++++++++++++----------
> drivers/clk/imx/clk.h | 11 +++++++++--
> 2 files changed, 29 insertions(+), 12 deletions(-)
>
> diff --git a/drivers/clk/imx/clk-busy.c b/drivers/clk/imx/clk-busy.c
> index e695622..51f75500 100644
> --- a/drivers/clk/imx/clk-busy.c
> +++ b/drivers/clk/imx/clk-busy.c
> @@ -78,13 +78,14 @@ static const struct clk_ops clk_busy_divider_ops = {
> .set_rate = clk_busy_divider_set_rate,
> };
>
> -struct clk *imx_clk_busy_divider(const char *name, const char *parent_name,
> +struct clk_hw *imx_clk_hw_busy_divider(const char *name, const char *parent_name,
> void __iomem *reg, u8 shift, u8 width,
> void __iomem *busy_reg, u8 busy_shift)
> {
> struct clk_busy_divider *busy;
> - struct clk *clk;
> + struct clk_hw *hw;
> struct clk_init_data init;
> + int ret;
>
> busy = kzalloc(sizeof(*busy), GFP_KERNEL);
> if (!busy)
> @@ -107,11 +108,15 @@ struct clk *imx_clk_busy_divider(const char *name, const char *parent_name,
>
> busy->div.hw.init = &init;
>
> - clk = clk_register(NULL, &busy->div.hw);
> - if (IS_ERR(clk))
> + hw = &busy->div.hw;
> +
> + ret = clk_hw_register(NULL, hw);
> + if (ret) {
> kfree(busy);
> + return ERR_PTR(ret);
> + }
>
> - return clk;
> + return hw;
> }
>
> struct clk_busy_mux {
> @@ -152,13 +157,14 @@ static const struct clk_ops clk_busy_mux_ops = {
> .set_parent = clk_busy_mux_set_parent,
> };
>
> -struct clk *imx_clk_busy_mux(const char *name, void __iomem *reg, u8 shift,
> +struct clk_hw *imx_clk_hw_busy_mux(const char *name, void __iomem *reg, u8 shift,
> u8 width, void __iomem *busy_reg, u8 busy_shift,
> const char * const *parent_names, int num_parents)
> {
> struct clk_busy_mux *busy;
> - struct clk *clk;
> + struct clk_hw *hw;
> struct clk_init_data init;
> + int ret;
>
> busy = kzalloc(sizeof(*busy), GFP_KERNEL);
> if (!busy)
> @@ -181,9 +187,13 @@ struct clk *imx_clk_busy_mux(const char *name, void __iomem *reg, u8 shift,
>
> busy->mux.hw.init = &init;
>
> - clk = clk_register(NULL, &busy->mux.hw);
> - if (IS_ERR(clk))
> + hw = &busy->mux.hw;
> +
> + ret = clk_hw_register(NULL, hw);
> + if (ret) {
> kfree(busy);
> + return ERR_PTR(ret);
> + }
>
> - return clk;
> + return hw;
> }
> diff --git a/drivers/clk/imx/clk.h b/drivers/clk/imx/clk.h
> index e78519c..69b2a13 100644
> --- a/drivers/clk/imx/clk.h
> +++ b/drivers/clk/imx/clk.h
> @@ -10,6 +10,7 @@ extern spinlock_t imx_ccm_lock;
> void imx_check_clocks(struct clk *clks[], unsigned int count);
> void imx_check_clk_hws(struct clk_hw *clks[], unsigned int count);
> void imx_register_uart_clocks(struct clk ** const clks[]);
> +void imx_register_uart_clocks_hws(struct clk_hw ** const hws[]);
>
> extern void imx_cscmr1_fixup(u32 *val);
>
> @@ -48,6 +49,12 @@ struct imx_pll14xx_clk {
> int flags;
> };
>
> +#define imx_clk_busy_divider(name, parent_name, reg, shift, width, busy_reg, busy_shift) \
> + imx_clk_hw_busy_divider(name, parent_name, reg, shift, width, busy_reg, busy_shift)->clk
> +
> +#define imx_clk_busy_mux(name, reg, shift, width, busy_reg, busy_shift, parent_names, num_parents) \
> + imx_clk_hw_busy_mux(name, reg, shift, width, busy_reg, busy_shift, parent_names, num_parents)->clk
> +
> struct clk *imx_clk_pll14xx(const char *name, const char *parent_name,
> void __iomem *base, const struct imx_pll14xx_clk *pll_clk);
>
> @@ -109,11 +116,11 @@ struct clk *imx_clk_pfd(const char *name, const char *parent_name,
> struct clk_hw *imx_clk_pfdv2(const char *name, const char *parent_name,
> void __iomem *reg, u8 idx);
>
> -struct clk *imx_clk_busy_divider(const char *name, const char *parent_name,
> +struct clk_hw *imx_clk_hw_busy_divider(const char *name, const char *parent_name,
> void __iomem *reg, u8 shift, u8 width,
> void __iomem *busy_reg, u8 busy_shift);
>
> -struct clk *imx_clk_busy_mux(const char *name, void __iomem *reg, u8 shift,
> +struct clk_hw *imx_clk_hw_busy_mux(const char *name, void __iomem *reg, u8 shift,
> u8 width, void __iomem *busy_reg, u8 busy_shift,
> const char * const *parent_names, int num_parents);
>
> --
> 2.7.4
>
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