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Date: Tue, 30 Jul 2013 21:14:14 -0300
From: Emilio López <emilio@...pez.com.ar>
To: Maxime Ripard <maxime.ripard@...e-electrons.com>
CC: Mike Turquette <mturquette@...aro.org>, kevin.z.m.zh@...il.com,
sunny@...winnertech.com, shuge@...winnertech.com,
linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/4] clk: sunxi: Rename the structure to prepare the addition
of sun6i
Hi Maxime,
El 30/07/13 11:44, Maxime Ripard escribió:
> Rename all the generic-named structure to sun4i to avoid confusion when
> we will introduce the sun6i (A31) clocks.
>
> While we're at it, avoid too long lines and wrap the DT compatibles
> tables.
>
> Signed-off-by: Maxime Ripard <maxime.ripard@...e-electrons.com>
Overall the patch looks good :)
> ---
> drivers/clk/sunxi/clk-sunxi.c | 108 +++++++++++++++++++++++++++++-------------
> 1 file changed, 75 insertions(+), 33 deletions(-)
>
> diff --git a/drivers/clk/sunxi/clk-sunxi.c b/drivers/clk/sunxi/clk-sunxi.c
> index fe1528e..3c91888 100644
> --- a/drivers/clk/sunxi/clk-sunxi.c
> +++ b/drivers/clk/sunxi/clk-sunxi.c
> @@ -25,12 +25,12 @@
> static DEFINE_SPINLOCK(clk_lock);
>
> /**
> - * sunxi_osc_clk_setup() - Setup function for gatable oscillator
> + * sun4i_osc_clk_setup() - Setup function for gatable oscillator
> */
>
> #define SUNXI_OSC24M_GATE 0
>
> -static void __init sunxi_osc_clk_setup(struct device_node *node)
> +static void __init sun4i_osc_clk_setup(struct device_node *node)
> {
> struct clk *clk;
> struct clk_fixed_rate *fixed;
> @@ -73,13 +73,13 @@ static void __init sunxi_osc_clk_setup(struct device_node *node)
>
>
> /**
> - * sunxi_get_pll1_factors() - calculates n, k, m, p factors for PLL1
> + * sun4i_get_pll1_factors() - calculates n, k, m, p factors for PLL1
> * PLL1 rate is calculated as follows
> * rate = (parent_rate * n * (k + 1) >> p) / (m + 1);
> * parent_rate is always 24Mhz
> */
>
> -static void sunxi_get_pll1_factors(u32 *freq, u32 parent_rate,
> +static void sun4i_get_pll1_factors(u32 *freq, u32 parent_rate,
> u8 *n, u8 *k, u8 *m, u8 *p)
> {
> u8 div;
> @@ -127,12 +127,12 @@ static void sunxi_get_pll1_factors(u32 *freq, u32 parent_rate,
>
>
> /**
> - * sunxi_get_apb1_factors() - calculates m, p factors for APB1
> + * sun4i_get_apb1_factors() - calculates m, p factors for APB1
> * APB1 rate is calculated as follows
> * rate = (parent_rate >> p) / (m + 1);
> */
>
> -static void sunxi_get_apb1_factors(u32 *freq, u32 parent_rate,
> +static void sun4i_get_apb1_factors(u32 *freq, u32 parent_rate,
> u8 *n, u8 *k, u8 *m, u8 *p)
> {
> u8 calcm, calcp;
> @@ -178,7 +178,7 @@ struct factors_data {
> void (*getter) (u32 *rate, u32 parent_rate, u8 *n, u8 *k, u8 *m, u8 *p);
> };
>
> -static struct clk_factors_config pll1_config = {
> +static struct clk_factors_config sun4i_pll1_config = {
> .nshift = 8,
> .nwidth = 5,
> .kshift = 4,
> @@ -189,21 +189,21 @@ static struct clk_factors_config pll1_config = {
> .pwidth = 2,
> };
>
> -static struct clk_factors_config apb1_config = {
> +static struct clk_factors_config sun4i_apb1_config = {
> .mshift = 0,
> .mwidth = 5,
> .pshift = 16,
> .pwidth = 2,
> };
>
> -static const __initconst struct factors_data pll1_data = {
> - .table = &pll1_config,
> - .getter = sunxi_get_pll1_factors,
> +static const __initconst struct factors_data sun4i_pll1_data = {
> + .table = &sun4i_pll1_config,
> + .getter = sun4i_get_pll1_factors,
> };
>
> -static const __initconst struct factors_data apb1_data = {
> - .table = &apb1_config,
> - .getter = sunxi_get_apb1_factors,
> +static const __initconst struct factors_data sun4i_apb1_data = {
> + .table = &sun4i_apb1_config,
> + .getter = sun4i_get_apb1_factors,
> };
>
> static void __init sunxi_factors_clk_setup(struct device_node *node,
> @@ -239,11 +239,11 @@ struct mux_data {
> u8 shift;
> };
>
> -static const __initconst struct mux_data cpu_mux_data = {
> +static const __initconst struct mux_data sun4i_cpu_mux_data = {
> .shift = 16,
> };
>
> -static const __initconst struct mux_data apb1_mux_data = {
> +static const __initconst struct mux_data sun4i_apb1_mux_data = {
> .shift = 24,
> };
>
> @@ -284,17 +284,17 @@ struct div_data {
> u8 pow;
> };
>
> -static const __initconst struct div_data axi_data = {
> +static const __initconst struct div_data sun4i_axi_data = {
> .shift = 0,
> .pow = 0,
> };
>
> -static const __initconst struct div_data ahb_data = {
> +static const __initconst struct div_data sun4i_ahb_data = {
> .shift = 4,
> .pow = 1,
> };
>
> -static const __initconst struct div_data apb0_data = {
> +static const __initconst struct div_data sun4i_apb0_data = {
> .shift = 8,
> .pow = 1,
> };
> @@ -413,35 +413,77 @@ CLK_OF_DECLARE(sunxi_osc, "allwinner,sun4i-osc-clk", sunxi_osc_clk_setup);
>
> /* Matches for factors clocks */
> static const __initconst struct of_device_id clk_factors_match[] = {
> - {.compatible = "allwinner,sun4i-pll1-clk", .data = &pll1_data,},
> - {.compatible = "allwinner,sun4i-apb1-clk", .data = &apb1_data,},
> + {
> + .compatible = "allwinner,sun4i-pll1-clk",
> + .data = &sun4i_pll1_data,
> + },
> + {
> + .compatible = "allwinner,sun4i-apb1-clk",
> + .data = &sun4i_apb1_data,
> + },
> {}
> };
>
> /* Matches for divider clocks */
> static const __initconst struct of_device_id clk_div_match[] = {
> - {.compatible = "allwinner,sun4i-axi-clk", .data = &axi_data,},
> - {.compatible = "allwinner,sun4i-ahb-clk", .data = &ahb_data,},
> - {.compatible = "allwinner,sun4i-apb0-clk", .data = &apb0_data,},
> + {
> + .compatible = "allwinner,sun4i-axi-clk",
> + .data = &sun4i_axi_data,
> + },
> + {
> + .compatible = "allwinner,sun4i-ahb-clk",
> + .data = &sun4i_ahb_data,
> + },
> + {
> + .compatible = "allwinner,sun4i-apb0-clk",
> + .data = &sun4i_apb0_data,
> + },
> {}
> };
>
> /* Matches for mux clocks */
> static const __initconst struct of_device_id clk_mux_match[] = {
> - {.compatible = "allwinner,sun4i-cpu-clk", .data = &cpu_mux_data,},
> - {.compatible = "allwinner,sun4i-apb1-mux-clk", .data = &apb1_mux_data,},
> + {
> + .compatible = "allwinner,sun4i-cpu-clk",
> + .data = &sun4i_cpu_mux_data,
> + },
> + {
> + .compatible = "allwinner,sun4i-apb1-mux-clk",
> + .data = &sun4i_apb1_mux_data,
> + },
> {}
> };
>
> /* Matches for gate clocks */
> static const __initconst struct of_device_id clk_gates_match[] = {
> - {.compatible = "allwinner,sun4i-axi-gates-clk", .data = &sun4i_axi_gates_data,},
> - {.compatible = "allwinner,sun4i-ahb-gates-clk", .data = &sun4i_ahb_gates_data,},
> - {.compatible = "allwinner,sun5i-a13-ahb-gates-clk", .data = &sun5i_a13_ahb_gates_data,},
> - {.compatible = "allwinner,sun4i-apb0-gates-clk", .data = &sun4i_apb0_gates_data,},
> - {.compatible = "allwinner,sun5i-a13-apb0-gates-clk", .data = &sun5i_a13_apb0_gates_data,},
> - {.compatible = "allwinner,sun4i-apb1-gates-clk", .data = &sun4i_apb1_gates_data,},
> - {.compatible = "allwinner,sun5i-a13-apb1-gates-clk", .data = &sun5i_a13_apb1_gates_data,},
> + {
> + .compatible = "allwinner,sun4i-axi-gates-clk",
> + .data = &sun4i_axi_gates_data,
> + },
> + {
> + .compatible = "allwinner,sun4i-ahb-gates-clk",
> + .data = &sun4i_ahb_gates_data,
> + },
> + {
> + .compatible = "allwinner,sun5i-a13-ahb-gates-clk",
> + .data = &sun5i_a13_ahb_gates_data,
> + },
> + {
> + .compatible = "allwinner,sun4i-apb0-gates-clk",
> + .data = &sun4i_apb0_gates_data,
> + },
> + {
> + .compatible = "allwinner,sun5i-a13-apb0-gates-clk",
> + .data = &sun5i_a13_apb0_gates_data,
> + },
> + {
> + .compatible = "allwinner,sun4i-apb1-gates-clk",
> + .data = &sun4i_apb1_gates_data,
> + },
> + {
> + .compatible = "allwinner,sun5i-a13-apb1-gates-clk",
> + .data = &sun5i_a13_apb1_gates_data,
> + },
> {}
> };
>
I'm not particularly a fan of this though; in my opinion it hurts
readability a bit and it uses 4x the lines. It looks like a highly
probable source of git conflicts too if not handled appropriately :)
Other than that,
Reviewed-by: Emilio López <emilio@...pez.com.ar>
Thanks!
Emilio
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