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Date: Mon, 11 Apr 2016 09:20:27 +0100
From: Lee Jones <lee.jones@...aro.org>
To: Heikki Krogerus <heikki.krogerus@...ux.intel.com>
Cc: "Rafael J. Wysocki" <rjw@...ysocki.net>,
Mika Westerberg <mika.westerberg@...ux.intel.com>,
Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
Thierry Reding <treding@...dia.com>,
Daniel Mack <daniel@...que.org>, linux-acpi@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3] device property: don't bother the drivers with struct
property_set
On Tue, 29 Mar 2016, Heikki Krogerus wrote:
> Since device_add_property_set() now always takes a copy of
> the property_set, and also since the fwnode type is always
> hard coded to be FWNODE_PDATA, there is no need for the
> drivers to deliver the entire struct property_set. The
> function can just create the instance of it on its own and
> bind the properties from the drivers to it on the spot.
>
> This renames device_add_property_set() to
> device_add_properties(). The function now takes struct
> property_entry as its parameter instead of struct
> property_set.
>
> Reviewed-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
> Reviewed-by: Mika Westerberg <mika.westerberg@...ux.intel.com>
> Acked-by: Thierry Reding <treding@...dia.com>
> Acked-by: Lee Jones <lee.jones@...aro.org>
> Signed-off-by: Heikki Krogerus <heikki.krogerus@...ux.intel.com>
> ---
> arch/arm/mach-pxa/raumfeld.c | 12 ++++--------
> arch/arm/mach-tegra/board-paz00.c | 6 +-----
> drivers/base/platform.c | 19 ++++++++++---------
> drivers/base/property.c | 34 +++++++++++++++++++++-------------
> drivers/mfd/intel-lpss-acpi.c | 12 ++----------
> drivers/mfd/intel-lpss-pci.c | 20 ++++----------------
> drivers/mfd/intel-lpss.c | 2 +-
> drivers/mfd/intel-lpss.h | 4 ++--
> drivers/mfd/mfd-core.c | 4 ++--
> include/linux/mfd/core.h | 4 ++--
> include/linux/platform_device.h | 6 +++---
> include/linux/property.h | 15 +++------------
> 12 files changed, 55 insertions(+), 83 deletions(-)
What's happening with this patch? I believe we're still missing
Acks. Once they are collected someone needs to create an immutable
branch and send out a pull-request.
> Changes since v2:
> - Changed the function name also in raumfeld.c. Thanks 0-Day test for capturing
> that one.
>
> Changes since v1:
> - Added the new users of the property framework
>
>
> diff --git a/arch/arm/mach-pxa/raumfeld.c b/arch/arm/mach-pxa/raumfeld.c
> index 5a941bd..e216433 100644
> --- a/arch/arm/mach-pxa/raumfeld.c
> +++ b/arch/arm/mach-pxa/raumfeld.c
> @@ -385,10 +385,6 @@ static struct property_entry raumfeld_rotary_properties[] = {
> { },
> };
>
> -static struct property_set raumfeld_rotary_property_set = {
> - .properties = raumfeld_rotary_properties,
> -};
> -
> static struct platform_device rotary_encoder_device = {
> .name = "rotary-encoder",
> .id = 0,
> @@ -1063,8 +1059,8 @@ static void __init __maybe_unused raumfeld_controller_init(void)
> pxa3xx_mfp_config(ARRAY_AND_SIZE(raumfeld_controller_pin_config));
>
> gpiod_add_lookup_table(&raumfeld_rotary_gpios_table);
> - device_add_property_set(&rotary_encoder_device.dev,
> - &raumfeld_rotary_property_set);
> + device_add_properties(&rotary_encoder_device.dev,
> + raumfeld_rotary_properties);
> platform_device_register(&rotary_encoder_device);
>
> spi_register_board_info(ARRAY_AND_SIZE(controller_spi_devices));
> @@ -1103,8 +1099,8 @@ static void __init __maybe_unused raumfeld_speaker_init(void)
> platform_device_register(&smc91x_device);
>
> gpiod_add_lookup_table(&raumfeld_rotary_gpios_table);
> - device_add_property_set(&rotary_encoder_device.dev,
> - &raumfeld_rotary_property_set);
> + device_add_properties(&rotary_encoder_device.dev,
> + raumfeld_rotary_properties);
> platform_device_register(&rotary_encoder_device);
>
> raumfeld_audio_init();
> diff --git a/arch/arm/mach-tegra/board-paz00.c b/arch/arm/mach-tegra/board-paz00.c
> index 52db8bf..7478f6f 100644
> --- a/arch/arm/mach-tegra/board-paz00.c
> +++ b/arch/arm/mach-tegra/board-paz00.c
> @@ -29,10 +29,6 @@ static struct property_entry __initdata wifi_rfkill_prop[] = {
> { },
> };
>
> -static struct property_set __initdata wifi_rfkill_pset = {
> - .properties = wifi_rfkill_prop,
> -};
> -
> static struct platform_device wifi_rfkill_device = {
> .name = "rfkill_gpio",
> .id = -1,
> @@ -49,7 +45,7 @@ static struct gpiod_lookup_table wifi_gpio_lookup = {
>
> void __init tegra_paz00_wifikill_init(void)
> {
> - platform_device_add_properties(&wifi_rfkill_device, &wifi_rfkill_pset);
> + platform_device_add_properties(&wifi_rfkill_device, wifi_rfkill_prop);
> gpiod_add_lookup_table(&wifi_gpio_lookup);
> platform_device_register(&wifi_rfkill_device);
> }
> diff --git a/drivers/base/platform.c b/drivers/base/platform.c
> index f437afa..6482d47 100644
> --- a/drivers/base/platform.c
> +++ b/drivers/base/platform.c
> @@ -322,16 +322,16 @@ EXPORT_SYMBOL_GPL(platform_device_add_data);
> /**
> * platform_device_add_properties - add built-in properties to a platform device
> * @pdev: platform device to add properties to
> - * @pset: properties to add
> + * @properties: null terminated array of properties to add
> *
> - * The function will take deep copy of the properties in @pset and attach
> - * the copy to the platform device. The memory associated with properties
> - * will be freed when the platform device is released.
> + * The function will take deep copy of @properties and attach the copy to the
> + * platform device. The memory associated with properties will be freed when the
> + * platform device is released.
> */
> int platform_device_add_properties(struct platform_device *pdev,
> - const struct property_set *pset)
> + struct property_entry *properties)
> {
> - return device_add_property_set(&pdev->dev, pset);
> + return device_add_properties(&pdev->dev, properties);
> }
> EXPORT_SYMBOL_GPL(platform_device_add_properties);
>
> @@ -447,7 +447,7 @@ void platform_device_del(struct platform_device *pdev)
> release_resource(r);
> }
>
> - device_remove_property_set(&pdev->dev);
> + device_remove_properties(&pdev->dev);
> }
> }
> EXPORT_SYMBOL_GPL(platform_device_del);
> @@ -526,8 +526,9 @@ struct platform_device *platform_device_register_full(
> if (ret)
> goto err;
>
> - if (pdevinfo->pset) {
> - ret = platform_device_add_properties(pdev, pdevinfo->pset);
> + if (pdevinfo->properties) {
> + ret = platform_device_add_properties(pdev,
> + pdevinfo->properties);
> if (ret)
> goto err;
> }
> diff --git a/drivers/base/property.c b/drivers/base/property.c
> index 9b1a65d..210423d 100644
> --- a/drivers/base/property.c
> +++ b/drivers/base/property.c
> @@ -19,6 +19,11 @@
> #include <linux/etherdevice.h>
> #include <linux/phy.h>
>
> +struct property_set {
> + struct fwnode_handle fwnode;
> + struct property_entry *properties;
> +};
> +
> static inline bool is_pset_node(struct fwnode_handle *fwnode)
> {
> return fwnode && fwnode->type == FWNODE_PDATA;
> @@ -801,14 +806,14 @@ static struct property_set *pset_copy_set(const struct property_set *pset)
> }
>
> /**
> - * device_remove_property_set - Remove properties from a device object.
> + * device_remove_properties - Remove properties from a device object.
> * @dev: Device whose properties to remove.
> *
> * The function removes properties previously associated to the device
> - * secondary firmware node with device_add_property_set(). Memory allocated
> + * secondary firmware node with device_add_properties(). Memory allocated
> * to the properties will also be released.
> */
> -void device_remove_property_set(struct device *dev)
> +void device_remove_properties(struct device *dev)
> {
> struct fwnode_handle *fwnode;
>
> @@ -831,24 +836,27 @@ void device_remove_property_set(struct device *dev)
> }
> }
> }
> -EXPORT_SYMBOL_GPL(device_remove_property_set);
> +EXPORT_SYMBOL_GPL(device_remove_properties);
>
> /**
> - * device_add_property_set - Add a collection of properties to a device object.
> + * device_add_properties - Add a collection of properties to a device object.
> * @dev: Device to add properties to.
> - * @pset: Collection of properties to add.
> + * @properties: Collection of properties to add.
> *
> - * Associate a collection of device properties represented by @pset with @dev
> - * as its secondary firmware node. The function takes a copy of @pset.
> + * Associate a collection of device properties represented by @properties with
> + * @dev as its secondary firmware node. The function takes a copy of
> + * @properties.
> */
> -int device_add_property_set(struct device *dev, const struct property_set *pset)
> +int device_add_properties(struct device *dev, struct property_entry *properties)
> {
> - struct property_set *p;
> + struct property_set *p, pset;
>
> - if (!pset)
> + if (!properties)
> return -EINVAL;
>
> - p = pset_copy_set(pset);
> + pset.properties = properties;
> +
> + p = pset_copy_set(&pset);
> if (IS_ERR(p))
> return PTR_ERR(p);
>
> @@ -856,7 +864,7 @@ int device_add_property_set(struct device *dev, const struct property_set *pset)
> set_secondary_fwnode(dev, &p->fwnode);
> return 0;
> }
> -EXPORT_SYMBOL_GPL(device_add_property_set);
> +EXPORT_SYMBOL_GPL(device_add_properties);
>
> /**
> * device_get_next_child_node - Return the next child node handle for a device
> diff --git a/drivers/mfd/intel-lpss-acpi.c b/drivers/mfd/intel-lpss-acpi.c
> index 5a8d9c7..7ddc4a9 100644
> --- a/drivers/mfd/intel-lpss-acpi.c
> +++ b/drivers/mfd/intel-lpss-acpi.c
> @@ -31,13 +31,9 @@ static struct property_entry spt_i2c_properties[] = {
> { },
> };
>
> -static struct property_set spt_i2c_pset = {
> - .properties = spt_i2c_properties,
> -};
> -
> static const struct intel_lpss_platform_info spt_i2c_info = {
> .clk_rate = 120000000,
> - .pset = &spt_i2c_pset,
> + .properties = spt_i2c_properties,
> };
>
> static const struct intel_lpss_platform_info bxt_info = {
> @@ -51,13 +47,9 @@ static struct property_entry bxt_i2c_properties[] = {
> { },
> };
>
> -static struct property_set bxt_i2c_pset = {
> - .properties = bxt_i2c_properties,
> -};
> -
> static const struct intel_lpss_platform_info bxt_i2c_info = {
> .clk_rate = 133000000,
> - .pset = &bxt_i2c_pset,
> + .properties = bxt_i2c_properties,
> };
>
> static const struct acpi_device_id intel_lpss_acpi_ids[] = {
> diff --git a/drivers/mfd/intel-lpss-pci.c b/drivers/mfd/intel-lpss-pci.c
> index a19e571..1d79a3c 100644
> --- a/drivers/mfd/intel-lpss-pci.c
> +++ b/drivers/mfd/intel-lpss-pci.c
> @@ -71,13 +71,9 @@ static struct property_entry spt_i2c_properties[] = {
> { },
> };
>
> -static struct property_set spt_i2c_pset = {
> - .properties = spt_i2c_properties,
> -};
> -
> static const struct intel_lpss_platform_info spt_i2c_info = {
> .clk_rate = 120000000,
> - .pset = &spt_i2c_pset,
> + .properties = spt_i2c_properties,
> };
>
> static struct property_entry uart_properties[] = {
> @@ -87,14 +83,10 @@ static struct property_entry uart_properties[] = {
> { },
> };
>
> -static struct property_set uart_pset = {
> - .properties = uart_properties,
> -};
> -
> static const struct intel_lpss_platform_info spt_uart_info = {
> .clk_rate = 120000000,
> .clk_con_id = "baudclk",
> - .pset = &uart_pset,
> + .properties = uart_properties,
> };
>
> static const struct intel_lpss_platform_info bxt_info = {
> @@ -104,7 +96,7 @@ static const struct intel_lpss_platform_info bxt_info = {
> static const struct intel_lpss_platform_info bxt_uart_info = {
> .clk_rate = 100000000,
> .clk_con_id = "baudclk",
> - .pset = &uart_pset,
> + .properties = uart_properties,
> };
>
> static struct property_entry bxt_i2c_properties[] = {
> @@ -114,13 +106,9 @@ static struct property_entry bxt_i2c_properties[] = {
> { },
> };
>
> -static struct property_set bxt_i2c_pset = {
> - .properties = bxt_i2c_properties,
> -};
> -
> static const struct intel_lpss_platform_info bxt_i2c_info = {
> .clk_rate = 133000000,
> - .pset = &bxt_i2c_pset,
> + .properties = bxt_i2c_properties,
> };
>
> static const struct pci_device_id intel_lpss_pci_ids[] = {
> diff --git a/drivers/mfd/intel-lpss.c b/drivers/mfd/intel-lpss.c
> index 85ad9ec..d9353c7 100644
> --- a/drivers/mfd/intel-lpss.c
> +++ b/drivers/mfd/intel-lpss.c
> @@ -409,7 +409,7 @@ int intel_lpss_probe(struct device *dev,
> if (ret)
> return ret;
>
> - lpss->cell->pset = info->pset;
> + lpss->cell->properties = info->properties;
>
> intel_lpss_init_dev(lpss);
>
> diff --git a/drivers/mfd/intel-lpss.h b/drivers/mfd/intel-lpss.h
> index 0dcea9e..6941166 100644
> --- a/drivers/mfd/intel-lpss.h
> +++ b/drivers/mfd/intel-lpss.h
> @@ -16,14 +16,14 @@
>
> struct device;
> struct resource;
> -struct property_set;
> +struct property_entry;
>
> struct intel_lpss_platform_info {
> struct resource *mem;
> int irq;
> unsigned long clk_rate;
> const char *clk_con_id;
> - struct property_set *pset;
> + struct property_entry *properties;
> };
>
> int intel_lpss_probe(struct device *dev,
> diff --git a/drivers/mfd/mfd-core.c b/drivers/mfd/mfd-core.c
> index 409da01..86bc01d 100644
> --- a/drivers/mfd/mfd-core.c
> +++ b/drivers/mfd/mfd-core.c
> @@ -193,8 +193,8 @@ static int mfd_add_device(struct device *parent, int id,
> goto fail_alias;
> }
>
> - if (cell->pset) {
> - ret = platform_device_add_properties(pdev, cell->pset);
> + if (cell->properties) {
> + ret = platform_device_add_properties(pdev, cell->properties);
> if (ret)
> goto fail_alias;
> }
> diff --git a/include/linux/mfd/core.h b/include/linux/mfd/core.h
> index bc6f7e0..9837f1e 100644
> --- a/include/linux/mfd/core.h
> +++ b/include/linux/mfd/core.h
> @@ -17,7 +17,7 @@
> #include <linux/platform_device.h>
>
> struct irq_domain;
> -struct property_set;
> +struct property_entry;
>
> /* Matches ACPI PNP id, either _HID or _CID, or ACPI _ADR */
> struct mfd_cell_acpi_match {
> @@ -47,7 +47,7 @@ struct mfd_cell {
> size_t pdata_size;
>
> /* device properties passed to the sub devices drivers */
> - const struct property_set *pset;
> + struct property_entry *properties;
>
> /*
> * Device Tree compatible string
> diff --git a/include/linux/platform_device.h b/include/linux/platform_device.h
> index 03b7555..98c2a7c 100644
> --- a/include/linux/platform_device.h
> +++ b/include/linux/platform_device.h
> @@ -18,7 +18,7 @@
> #define PLATFORM_DEVID_AUTO (-2)
>
> struct mfd_cell;
> -struct property_set;
> +struct property_entry;
>
> struct platform_device {
> const char *name;
> @@ -73,7 +73,7 @@ struct platform_device_info {
> size_t size_data;
> u64 dma_mask;
>
> - const struct property_set *pset;
> + struct property_entry *properties;
> };
> extern struct platform_device *platform_device_register_full(
> const struct platform_device_info *pdevinfo);
> @@ -172,7 +172,7 @@ extern int platform_device_add_resources(struct platform_device *pdev,
> extern int platform_device_add_data(struct platform_device *pdev,
> const void *data, size_t size);
> extern int platform_device_add_properties(struct platform_device *pdev,
> - const struct property_set *pset);
> + struct property_entry *properties);
> extern int platform_device_add(struct platform_device *pdev);
> extern void platform_device_del(struct platform_device *pdev);
> extern void platform_device_put(struct platform_device *pdev);
> diff --git a/include/linux/property.h b/include/linux/property.h
> index b51fcd3..ecab11e 100644
> --- a/include/linux/property.h
> +++ b/include/linux/property.h
> @@ -238,18 +238,9 @@ struct property_entry {
> .name = _name_, \
> }
>
> -/**
> - * struct property_set - Collection of "built-in" device properties.
> - * @fwnode: Handle to be pointed to by the fwnode field of struct device.
> - * @properties: Array of properties terminated with a null entry.
> - */
> -struct property_set {
> - struct fwnode_handle fwnode;
> - struct property_entry *properties;
> -};
> -
> -int device_add_property_set(struct device *dev, const struct property_set *pset);
> -void device_remove_property_set(struct device *dev);
> +int device_add_properties(struct device *dev,
> + struct property_entry *properties);
> +void device_remove_properties(struct device *dev);
>
> bool device_dma_supported(struct device *dev);
>
--
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
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