Hi,
On Thu, Nov 20, 2014 at 7:55 AM, Hans de Goede <hdegoede@xxxxxxxxxx> wrote:
> Add a driver for mod0 clocks found in the prcm. Currently there is only
> one mod0 clocks in the prcm, the ir clock.
>
> Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
> ---
> Documentation/devicetree/bindings/clock/sunxi.txt | 1 +
> drivers/clk/sunxi/Makefile | 2 +-
> drivers/clk/sunxi/clk-sun6i-prcm-mod0.c | 63 +++++++++++++++++++++++
> drivers/mfd/sun6i-prcm.c | 14 +++++
> 4 files changed, 79 insertions(+), 1 deletion(-)
> create mode 100644 drivers/clk/sunxi/clk-sun6i-prcm-mod0.c
>
> diff --git a/Documentation/devicetree/bindings/clock/sunxi.txt b/Documentation/devicetree/bindings/clock/sunxi.txt
> index ed116df..342c75a 100644
> --- a/Documentation/devicetree/bindings/clock/sunxi.txt
> +++ b/Documentation/devicetree/bindings/clock/sunxi.txt
> @@ -56,6 +56,7 @@ Required properties:
> "allwinner,sun4i-a10-usb-clk" - for usb gates + resets on A10 / A20
> "allwinner,sun5i-a13-usb-clk" - for usb gates + resets on A13
> "allwinner,sun6i-a31-usb-clk" - for usb gates + resets on A31
> + "allwinner,sun6i-a31-ir-clk" - for the ir clock on A31
>
> Required properties for all clocks:
> - reg : shall be the control register address for the clock.
> diff --git a/drivers/clk/sunxi/Makefile b/drivers/clk/sunxi/Makefile
> index 7ddc2b5..daf8b1c 100644
> --- a/drivers/clk/sunxi/Makefile
> +++ b/drivers/clk/sunxi/Makefile
> @@ -10,4 +10,4 @@ obj-y += clk-sun8i-mbus.o
>
> obj-$(CONFIG_MFD_SUN6I_PRCM) += \
> clk-sun6i-ar100.o clk-sun6i-apb0.o clk-sun6i-apb0-gates.o \
> - clk-sun8i-apb0.o
> + clk-sun8i-apb0.o clk-sun6i-prcm-mod0.o
> diff --git a/drivers/clk/sunxi/clk-sun6i-prcm-mod0.c b/drivers/clk/sunxi/clk-sun6i-prcm-mod0.c
> new file mode 100644
> index 0000000..e80f18e
> --- /dev/null
> +++ b/drivers/clk/sunxi/clk-sun6i-prcm-mod0.c
> @@ -0,0 +1,63 @@
> +/*
> + * Allwinner A31 PRCM mod0 clock driver
> + *
> + * Copyright (C) 2014 Hans de Goede <hdegoede@xxxxxxxxxx>
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License as published by
> + * the Free Software Foundation; either version 2 of the License, or
> + * (at your option) any later version.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + */
> +
> +#include <linux/clk-provider.h>
> +#include <linux/clkdev.h>
> +#include <linux/module.h>
> +#include <linux/of_address.h>
> +#include <linux/platform_device.h>
> +
> +#include "clk-factors.h"
> +#include "clk-mod0.h"
> +
> +static const struct of_device_id sun6i_a31_prcm_mod0_clk_dt_ids[] = {
> + { .compatible = "allwinner,sun6i-a31-ir-clk" },
Could we use a generic name, like "sun6i-a31-prcm-mod0-clk"?
IIRC, there is another one, the module clock for the 1-wire interface.
Same for the DT patches.
ChenYu
> + { /* sentinel */ }
> +};
> +
> +static DEFINE_SPINLOCK(sun6i_prcm_mod0_lock);
> +
> +static int sun6i_a31_prcm_mod0_clk_probe(struct platform_device *pdev)
> +{
> + struct device_node *np = pdev->dev.of_node;
> + struct resource *r;
> + void __iomem *reg;
> +
> + if (!np)
> + return -ENODEV;
> +
> + r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> + reg = devm_ioremap_resource(&pdev->dev, r);
> + if (IS_ERR(reg))
> + return PTR_ERR(reg);
> +
> + sunxi_factors_register(np, &sun4i_a10_mod0_data,
> + &sun6i_prcm_mod0_lock, reg);
> + return 0;
> +}
> +
> +static struct platform_driver sun6i_a31_prcm_mod0_clk_driver = {
> + .driver = {
> + .name = "sun6i-a31-prcm-mod0-clk",
> + .of_match_table = sun6i_a31_prcm_mod0_clk_dt_ids,
> + },
> + .probe = sun6i_a31_prcm_mod0_clk_probe,
> +};
> +module_platform_driver(sun6i_a31_prcm_mod0_clk_driver);
> +
> +MODULE_DESCRIPTION("Allwinner A31 PRCM mod0 clock driver");
> +MODULE_AUTHOR("Hans de Goede <hdegoede@xxxxxxxxxx>");
> +MODULE_LICENSE("GPL");
> diff --git a/drivers/mfd/sun6i-prcm.c b/drivers/mfd/sun6i-prcm.c
> index 283ab8d..ff1254f 100644
> --- a/drivers/mfd/sun6i-prcm.c
> +++ b/drivers/mfd/sun6i-prcm.c
> @@ -41,6 +41,14 @@ static const struct resource sun6i_a31_apb0_gates_clk_res[] = {
> },
> };
>
> +static const struct resource sun6i_a31_ir_clk_res[] = {
> + {
> + .start = 0x54,
> + .end = 0x57,
> + .flags = IORESOURCE_MEM,
> + },
> +};
> +
> static const struct resource sun6i_a31_apb0_rstc_res[] = {
> {
> .start = 0xb0,
> @@ -69,6 +77,12 @@ static const struct mfd_cell sun6i_a31_prcm_subdevs[] = {
> .resources = sun6i_a31_apb0_gates_clk_res,
> },
> {
> + .name = "sun6i-a31-ir-clk",
> + .of_compatible = "allwinner,sun6i-a31-ir-clk",
> + .num_resources = ARRAY_SIZE(sun6i_a31_ir_clk_res),
> + .resources = sun6i_a31_ir_clk_res,
> + },
> + {
> .name = "sun6i-a31-apb0-clock-reset",
> .of_compatible = "allwinner,sun6i-a31-clock-reset",
> .num_resources = ARRAY_SIZE(sun6i_a31_apb0_rstc_res),
> --
> 2.1.0
>
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