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From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: Serge Semin <fancer.lancer@gmail.com>,
	linux-gpio@vger.kernel.org,
	Linus Walleij <linus.walleij@linaro.org>,
	Bartosz Golaszewski <bgolaszewski@baylibre.com>,
	linux-kernel@vger.kernel.org, Lee Jones <lee.jones@linaro.org>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Subject: [PATCH v1 4/6] mfd: intel_quark_i2c_gpio: Convert to use software nodes
Date: Mon,  8 Jun 2020 16:42:58 +0300
Message-ID: <20200608134300.76091-5-andriy.shevchenko@linux.intel.com> (raw)
In-Reply-To: <20200608134300.76091-1-andriy.shevchenko@linux.intel.com>

The driver can provide a software node group instead of
passing legacy platform data. This will allow to drop
the legacy platform data structures along with unifying
a child device driver to use same interface for all
property providers, i.e. Device Tree, ACPI, and board files.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 drivers/mfd/intel_quark_i2c_gpio.c | 63 ++++++++++++++----------------
 1 file changed, 30 insertions(+), 33 deletions(-)

diff --git a/drivers/mfd/intel_quark_i2c_gpio.c b/drivers/mfd/intel_quark_i2c_gpio.c
index 06b538dd124c..fb8c0b042ecc 100644
--- a/drivers/mfd/intel_quark_i2c_gpio.c
+++ b/drivers/mfd/intel_quark_i2c_gpio.c
@@ -16,8 +16,8 @@
 #include <linux/clkdev.h>
 #include <linux/clk-provider.h>
 #include <linux/dmi.h>
-#include <linux/platform_data/gpio-dwapb.h>
 #include <linux/platform_data/i2c-designware.h>
+#include <linux/property.h>
 
 /* PCI BAR for register base address */
 #define MFD_I2C_BAR		0
@@ -27,15 +27,6 @@
 #define MFD_ACPI_MATCH_GPIO	0ULL
 #define MFD_ACPI_MATCH_I2C	1ULL
 
-/* The base GPIO number under GPIOLIB framework */
-#define INTEL_QUARK_MFD_GPIO_BASE	8
-
-/* The default number of South-Cluster GPIO on Quark. */
-#define INTEL_QUARK_MFD_NGPIO		8
-
-/* The DesignWare GPIO ports on Quark. */
-#define INTEL_QUARK_GPIO_NPORTS	1
-
 #define INTEL_QUARK_IORES_MEM	0
 #define INTEL_QUARK_IORES_IRQ	1
 
@@ -89,17 +80,44 @@ static struct resource intel_quark_gpio_res[] = {
 	[INTEL_QUARK_IORES_MEM] = {
 		.flags = IORESOURCE_MEM,
 	},
+	[INTEL_QUARK_IORES_IRQ] = {
+		.flags = IORESOURCE_IRQ,
+	},
 };
 
 static struct mfd_cell_acpi_match intel_quark_acpi_match_gpio = {
 	.adr = MFD_ACPI_MATCH_GPIO,
 };
 
+static const struct software_node intel_quark_gpio_controller_node = {
+	.name = "intel-quark-gpio-controller",
+};
+
+static const struct property_entry intel_quark_gpio_portA_properties[] = {
+	PROPERTY_ENTRY_U32("reg", 0),
+	PROPERTY_ENTRY_U32("snps,nr-gpios", 8),
+	PROPERTY_ENTRY_U32("snps,gpio-base", 8),
+	{ }
+};
+
+static const struct software_node intel_quark_gpio_portA_node = {
+	.name = "portA",
+	.parent = &intel_quark_gpio_controller_node,
+	.properties = intel_quark_gpio_portA_properties,
+};
+
+static const struct software_node *intel_quark_gpio_node_group[] = {
+	&intel_quark_gpio_controller_node,
+	&intel_quark_gpio_portA_node,
+	NULL
+};
+
 static struct mfd_cell intel_quark_mfd_cells[] = {
 	{
 		.id = MFD_GPIO_BAR,
 		.name = "gpio-dwapb",
 		.acpi_match = &intel_quark_acpi_match_gpio,
+		.node_group = intel_quark_gpio_node_group,
 		.num_resources = ARRAY_SIZE(intel_quark_gpio_res),
 		.resources = intel_quark_gpio_res,
 		.ignore_resource_conflicts = true,
@@ -189,36 +207,15 @@ static int intel_quark_i2c_setup(struct pci_dev *pdev, struct mfd_cell *cell)
 
 static int intel_quark_gpio_setup(struct pci_dev *pdev, struct mfd_cell *cell)
 {
-	struct dwapb_platform_data *pdata;
 	struct resource *res = (struct resource *)cell->resources;
-	struct device *dev = &pdev->dev;
 
 	res[INTEL_QUARK_IORES_MEM].start =
 		pci_resource_start(pdev, MFD_GPIO_BAR);
 	res[INTEL_QUARK_IORES_MEM].end =
 		pci_resource_end(pdev, MFD_GPIO_BAR);
 
-	pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
-	if (!pdata)
-		return -ENOMEM;
-
-	/* For intel quark x1000, it has only one port: portA */
-	pdata->nports = INTEL_QUARK_GPIO_NPORTS;
-	pdata->properties = devm_kcalloc(dev, pdata->nports,
-					 sizeof(*pdata->properties),
-					 GFP_KERNEL);
-	if (!pdata->properties)
-		return -ENOMEM;
-
-	/* Set the properties for portA */
-	pdata->properties->fwnode	= NULL;
-	pdata->properties->idx		= 0;
-	pdata->properties->ngpio	= INTEL_QUARK_MFD_NGPIO;
-	pdata->properties->gpio_base	= INTEL_QUARK_MFD_GPIO_BASE;
-	pdata->properties->irq[0]	= pdev->irq;
-
-	cell->platform_data = pdata;
-	cell->pdata_size = sizeof(*pdata);
+	res[INTEL_QUARK_IORES_IRQ].start = pdev->irq;
+	res[INTEL_QUARK_IORES_IRQ].end = pdev->irq;
 
 	return 0;
 }
-- 
2.27.0.rc2


  parent reply index

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-08 13:42 [PATCH v1 0/6] mfd: Make use of " Andy Shevchenko
2020-06-08 13:42 ` [PATCH v1 1/6] gpio: dwapb: Replace irq_shared flag with fwnode type check Andy Shevchenko
2020-06-08 13:42 ` [PATCH v1 2/6] gpio: dwapb: Read GPIO base from snps,gpio-base property Andy Shevchenko
2020-06-10 11:26   ` Linus Walleij
2020-06-10 13:41     ` Andy Shevchenko
2020-06-08 13:42 ` [PATCH v1 3/6] mfd: core: Propagate software node group to the sub devices Andy Shevchenko
2020-06-08 19:25   ` Lee Jones
2020-06-09 12:40     ` Andy Shevchenko
2020-06-17 12:51       ` Lee Jones
2020-06-08 13:42 ` Andy Shevchenko [this message]
2020-06-10 11:38   ` [PATCH v1 4/6] mfd: intel_quark_i2c_gpio: Convert to use software nodes Linus Walleij
2020-06-10 13:43     ` Andy Shevchenko
2020-06-08 13:42 ` [PATCH v1 5/6] gpio: dwapb: Get rid of legacy platform data Andy Shevchenko
2020-06-10 11:39   ` Linus Walleij
2020-06-10 13:47     ` Andy Shevchenko
2020-06-08 13:43 ` [PATCH v1 6/6] gpio: dwapb: Define magic number for IRQ and GPIO lines Andy Shevchenko
2020-06-16 20:02 ` [PATCH v1 0/6] mfd: Make use of software nodes Serge Semin
2020-06-16 21:40   ` Andy Shevchenko
2020-06-16 22:56     ` Serge Semin
2020-06-18  8:56       ` Andy Shevchenko
2020-06-19 22:12         ` Serge Semin
2020-06-20 10:13           ` Andy Shevchenko
2020-06-23  1:49             ` Serge Semin
2020-06-24 12:43               ` Andy Shevchenko

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